CN112015127B - Safety method, device and application for gas generator set machine room - Google Patents
Safety method, device and application for gas generator set machine room Download PDFInfo
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- CN112015127B CN112015127B CN202010885024.5A CN202010885024A CN112015127B CN 112015127 B CN112015127 B CN 112015127B CN 202010885024 A CN202010885024 A CN 202010885024A CN 112015127 B CN112015127 B CN 112015127B
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- 239000007789 gas Substances 0.000 claims description 333
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- 238000013523 data management Methods 0.000 claims description 122
- 238000009423 ventilation Methods 0.000 claims description 79
- 239000002912 waste gas Substances 0.000 claims description 73
- 239000000446 fuel Substances 0.000 claims description 66
- 239000000567 combustion gas Substances 0.000 claims description 32
- 238000005520 cutting process Methods 0.000 claims description 31
- 239000002737 fuel gas Substances 0.000 claims description 31
- 230000001276 controlling effect Effects 0.000 claims description 17
- 239000002341 toxic gas Substances 0.000 claims description 13
- 230000007613 environmental effect Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
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- 238000012545 processing Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
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- 238000002485 combustion reaction Methods 0.000 description 23
- 230000000903 blocking effect Effects 0.000 description 19
- 230000008859 change Effects 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 description 9
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
Abstract
The invention aims to provide a safety method, a safety device and an application for a gas generator set machine room, comprising the following steps: classifying signals in a gas generator set machine room according to the risk level to form a first link with a higher risk level and a second link with a second highest risk level; if the received alarm signal belongs to the first link, the safety of the gas generator set room is ensured by a gas shutoff mode; if the received alarm signal belongs to the second link, adjusting the environment in the gas generator set room by adjusting a fan in the gas generator set room until the fault is eliminated; if the second link cannot eliminate the fault by adjusting the environment in the gas generator set room, the alarm signal enters the first link, and the gas generator set room is protected by shutting off the gas. The invention can distinguish different alarm signals, and has the advantages of rapid response and high safety level.
Description
Technical Field
The invention relates to the technical field of box-type four-stroke internal combustion generating sets, in particular to a method, a device and application for guaranteeing the safety of a box-type four-stroke internal combustion gas generating set machine room, and the method, the device and the application can be popularized and applied to guaranteeing the safety of the box-type four-stroke internal combustion gas generating set machine room in the aspect of market application.
Background
In the technical field of the existing four-stroke internal combustion generating set, a box type four-stroke internal combustion generating set is modularized generating equipment for installing the four-stroke internal combustion generating set in a box body, and a machine room is a room for installing the four-stroke internal combustion generating set and is used for reducing noise transmitted by the four-stroke internal combustion generating set outwards and preventing rain, snow and wind and sand from entering the machine room, so that the four-stroke internal combustion generating set normally operates in the machine room.
The four-stroke internal combustion generating set comprises a four-stroke internal combustion gas generating set and a four-stroke internal combustion diesel generating set, the four-stroke internal combustion gas generating set combusts gas fuel, and the four-stroke internal combustion diesel generating set combusts liquid fuel.
The existing box-type four-stroke internal combustion gas generator set machine room is provided with a four-stroke internal combustion gas generator set, a gas pipeline, ventilation equipment and a ventilation opening filter screen; the gas pipeline supplies gas fuel for the four-stroke internal combustion gas generator set, wherein the gas fuel is inflammable and explosive gas, and when the gas fuel leaks into a machine room, the gas fuel has the risk of ignition and explosion; the ventilation equipment supplies fresh air required by combustion from outside the box body to the four-stroke internal combustion gas generator set in the machine room, and also circulates radiant heat of the four-stroke internal combustion gas generator set in the machine room outside the box body; the vent filter screen is used for filtering dust outside the box body to ensure air cleaning in a machine room of the gas generator set, the vent filter screen is blocked to reduce the fresh air amount entering the machine room, so that toxic gas generated by insufficient combustion is contained in the waste gas of the four-stroke internal combustion gas generator set, and the body health of operators can be influenced when the waste gas leaks into the machine room for aggregation; as known in the art, when the box-type four-stroke internal combustion gas generator set is in operation or maintenance, gas fuel leakage, waste gas leakage and vent filter screen blockage risks inevitably exist, so that a method and a control system for ensuring the safety of a machine room of the box-type four-stroke internal combustion gas generator set are needed, the gas fuel leakage, waste gas leakage and vent filter screen blockage events are accurately judged, flammable and explosive toxic gases are timely evacuated, and vent filter screen blockage alarm is reliably sent to avoid affecting the normal operation of the four-stroke internal combustion gas generator set.
Therefore, a safety method and a safety device for a gas generator set room need to be developed.
Disclosure of Invention
The invention aims to provide a safety method, a safety device and an application for a gas generator set machine room, and the safety device adopts the following specific scheme:
a safety method for a gas generator set room, comprising:
classifying signals in a gas generator set machine room according to the risk level to form a first link with a higher risk level and a second link with a second highest risk level;
environmental information in a gas generator set machine room is collected, and then:
if the received alarm signal belongs to the first link, the safety of the gas generator set room is ensured by a gas shutoff mode;
if the received alarm signal belongs to the second link, adjusting the environment in the gas generator set room by adjusting a fan in the gas generator set room until the fault is eliminated;
if the second link cannot eliminate the fault by adjusting the environment in the gas generator set room, the alarm signal enters the first link, and the gas generator set room is protected by shutting off the gas.
The process of classifying the signals in the gas generator set machine room according to the dangerous grade is as follows:
classifying according to the types of signals in a machine room of the gas generator set, and setting a primary threshold and a secondary threshold for each type of signals;
when the value of any one signal M in the gas generator set room is between the primary threshold value and the secondary threshold value, the signal M is a signal with a dangerous level of next high;
and when the value of any one signal M in the gas generator set room is higher than the second-level threshold, the signal M is a signal with higher risk level.
The first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if the serious leakage alarm signal of the gas fuel is received, further judging whether an alarm signal of the machine room temperature is received or not;
when the alarm signal of the machine room temperature is not received, adjusting the fan to the maximum rotation speed, and outputting a command of forcibly cutting off the fuel gas;
when an alarm signal of overhigh temperature of the machine room is received, and the fan outputs a command of forcibly cutting off the fuel gas in an unoperated state.
The first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if the serious leakage alarm signal of the waste gas is received, further judging whether an alarm signal of the machine room temperature is received or not;
when the alarm signal of the temperature of the machine room is not received, outputting a command of forcibly cutting off the fuel gas after the fan speed regulator reaches the maximum rotating speed to operate;
when an alarm signal of overhigh temperature of the machine room is received, and the fan outputs a command of forcibly cutting off the fuel gas in an unoperated state.
The first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if an alarm signal of overhigh temperature of the machine room is received, the running state of the fan is further judged:
outputting a command of forcibly cutting off the fuel gas when the fan is not in an operating state;
and outputting a command for forcibly cutting off the fuel gas when the fan is in an operating state and the fan is in an unoperated state.
The second link includes:
the gas fuel slight leakage alarm signal, the waste gas slight leakage alarm signal, the vent filter screen blockage alarm signal, the machine room atmospheric pressure alarm signal and the machine room temperature alarm signal are obtained by comparing the real-time data with a program reference;
The program reference setting values include: a 1-level gas leakage alarm set value, a 2-level gas leakage alarm set value, a 1-level waste gas leakage alarm set value, a 2-level waste gas leakage alarm set value, a machine room temperature set value 1, a machine room temperature set value 2, a fan running state set value, a fan rotating speed 1 set value, a fan rotating speed 2 set value, a fan maximum ventilation quantity rotating speed set value, a machine room atmospheric pressure set 1, a machine room atmospheric pressure set 2 and a machine room atmospheric pressure low set;
the rotating speed of the fan is divided into a fan rotating speed 1 set value, a fan rotating speed 2 set value and a fan maximum ventilation quantity rotating speed set value;
and when the alarm signal in the second link is received, the ventilation quantity is adjusted by adjusting the rotating speed of the fan, so that the alarm signal in the second link is eliminated.
If the gas fuel slight leakage alarm signal is received, a step fan speed increasing instruction is sent to the fan when the following conditions are met, and the ventilation quantity of a machine room is increased;
the "conditions satisfied simultaneously" are: the real-time rotating speed value of the fan does not reach the maximum rotating speed and simultaneously receives a machine room temperature alarm signal;
when the temperature value in the machine room of the gas generator set continuously rises after receiving a machine room temperature alarm signal, the fan sends out a fan maximum rotating speed operation setting value instruction so that the fan reaches the maximum ventilation quantity;
And when the temperature value in the gas generator set room continuously rises after receiving the room temperature alarm signal, and the temperature value in the gas generator set room is not reduced after the fan runs to the maximum rotation speed, sending a vent filter screen blocking alarm signal.
When an alarm signal of slight leakage of waste gas is received, a step fan-increasing rotating speed instruction is sent to the fan when the following conditions are met, and the ventilation quantity of a machine room is increased;
the "conditions satisfied simultaneously" are:
the real-time rotating speed value of the fan is smaller than the set value of the rotating speed 2 of the fan, and the real-time temperature value in the machine room of the gas generator set is smaller than the set value of the temperature 2 of the machine room;
when the real-time temperature of the gas generator set machine room is greater than the condition that the temperature setting value of the machine room is 2, controlling the maximum rotating speed of the fan to operate;
when the real-time rotating speed value of the fan is larger than the set value of the rotating speed 2 of the fan, if the pressure value of the real-time machine room is smaller than the low setting condition of the atmospheric pressure of the machine room, a vent filter screen blockage alarm signal is sent out;
and if the real-time rotating speed value of the fan is larger than the fan rotating speed 1 set value, controlling the fan to run at the maximum rotating speed if the real-time exhaust gas concentration value is larger than the 1-level exhaust gas leakage alarm set value.
When the real-time machine room temperature value is larger than the machine room temperature set value 1, sending a step fan-increasing rotating speed instruction to the fan when the following conditions are met, and increasing the ventilation quantity of the machine room;
the "conditions satisfied simultaneously" are:
the real-time rotating speed value of the fan is smaller than the set value of the rotating speed 2 of the fan, and the temperature value of the real-time machine room is smaller than the set value 2 of the temperature of the machine room;
when the real-time machine room temperature value is greater than the machine room temperature set value 2, controlling the fan to reach the maximum rotating speed;
and if the real-time rotating speed value of the fan is larger than the set value of the rotating speed 2 of the fan and the pressure value of the real-time machine room is smaller than the low atmospheric pressure setting condition of the machine room, sending a vent filter screen blockage alarm signal.
When the real-time pressure value of the machine room is greater than the machine room atmospheric pressure setting 1, if the real-time machine room atmospheric pressure value is greater than the machine room atmospheric pressure setting 2;
if the fan is not in the rotating speed lifting process, sending a command for reducing the rotating speed of the fan, and realizing the pressure reduction adjustment of the atmospheric pressure of the machine room;
when the real-time machine room pressure value is smaller than the machine room atmospheric pressure setting 1, if the real-time rotating speed of the fan is smaller than the fan rotating speed 2 setting value and the real-time machine room temperature value is smaller than the machine room temperature setting value 2, the rotating speed of the fan is increased, the ventilation quantity of the machine room is increased, and the air pressure is increased;
When the real-time machine room pressure value is greater than the machine room atmospheric pressure setting 1, if the real-time rotating speed of the fan is greater than the fan rotating speed 2 setting condition and the real-time machine room pressure value is less than the machine room atmospheric pressure low setting condition, a filter screen blockage alarm signal is sent.
A safety device for a gas generator set room, comprising:
the sensor assembly is used for collecting environmental information in a gas generator set machine room;
the real-time data management module is used for collecting signals output by the sensor assembly, processing the received signals and outputting related instructions;
the switching value module is connected with the real-time data management module through a bus and is used for receiving the instruction output by the real-time data management module;
the fan speed regulator receives the instruction of the switching value module and controls the running state of the fan;
and the alarm assembly is used for receiving the instruction output by the switching value module and carrying out danger alarm.
The sensor assembly includes:
one or more of a combustible gas detector, a special gas detector, a temperature-sensing detector and an atmospheric pressure detector.
The alarm assembly comprises:
one or more of a fuel gas alarm, a toxic gas alarm and a temperature alarm.
A safety device for a gas generator set room, further comprising:
and the data display module is connected with the real-time data management module and is used for graphically displaying fault conditions.
The beneficial effects of the invention are as follows: the invention has the following characteristics:
1) The switching value module of the first link utilizes the switching value signal to complete the dangerous control of serious leakage of gas fuel and serious leakage of waste gas in a machine room of the gas generator set, the input interface judges the serious leakage of the gas fuel, the serious leakage of the waste gas and the running state signal of a fan speed regulator, and when the serious leakage of the gas fuel and the serious leakage of the waste gas occur, the switching value output interface of the switching value module is utilized to forcedly start the fan to quickly evacuate serious leakage danger in the machine room, so that the gas is further forcedly cut off to stop the gas from entering the machine room and stop the operation of the gas generator set, and the serious leakage danger is prevented from expanding; the switching value input signals comprise a gas fuel serious leakage signal, an exhaust gas serious leakage signal, a fan speed regulator running state signal, a fan speed regulator stopping state signal and a fan forced running state signal;
2) Judging the risk of overhigh temperature of the machine room and the running state signal of a fan speed regulator by using a switching value input interface of a switching value module of a first link, and utilizing the switching value output interface of the switching value module to force the fan to stop and forcibly cut off fuel gas when the temperature of the machine room is overhigh so as to eliminate the serious risk of overhigh temperature of the machine room;
3) The real-time data management module in the second link collects real-time data gas concentration value, fan rotating speed value and temperature value of the machine room through the network bus and compares the values with the program reference setting value, and sends a step fan rotating speed increasing instruction to the fan speed regulator by utilizing the network bus to realize accurate ventilation quantity adjustment, and when the real-time gas concentration value is greater than a gas concentration reference value 2, a fan maximum rotating speed instruction is sent to the fan speed regulator to complete rapid evacuation of gas leakage danger in the machine room;
3) The real-time data management module in the second link collects real-time data and exhaust gas concentration values of a machine room, fan rotating speed values and machine room temperature values through a network bus, and compares the values with program reference set values, and sends a step fan increasing rotating speed instruction to the fan speed regulator by utilizing the network bus to realize accurate ventilation quantity adjustment, and when the real-time exhaust gas concentration values are larger than the 1-level exhaust gas leakage alarm set values, sends a fan maximum rotating speed instruction to the fan speed regulator to complete rapid evacuation of exhaust gas leakage risks in the machine room;
4) The real-time data management module in the second link collects real-time data of the machine room through the network bus, the temperature value of the machine room, the rotating speed value of the fan and the program reference set value are compared, a step fan-increasing rotating speed instruction is sent to the fan speed regulator through the network bus to realize accurate adjustment of ventilation quantity, and the air temperature in the machine room is controlled to meet the operation requirement of the internal combustion gas generator set through increasing the ventilation quantity;
5) The real-time data management module in the second link acquires a real-time data machine room pressure value, a fan rotating speed value and a machine room temperature value through a network bus, compares the real-time data machine room pressure value, the fan rotating speed value and the machine room temperature value with a fan non-forced running state transmitted by the program reference set value switching value module, and sends a step fan increasing rotating speed instruction or a step fan decreasing rotating speed instruction to a fan speed regulator by utilizing the network bus to realize accurate ventilation quantity adjustment, so that the balance control of the pressure in the machine room of the gas generator set is completed when the gas generator set runs or stops;
6) The real-time data management module in the second link sends a filter screen blockage instruction to the switching value module and the data display module through the network bus in the same way when the general risk of slight leakage of the gas fuel occurs, when the general risk of slight leakage of the waste gas occurs, in any control process of the temperature of the real-time control machine room and the atmospheric pressure of the real-time control machine room, so that the filter screen blockage risk alarm in the machine room of the gas generator set is realized;
7) The real-time data management module receives real-time data of the machine room detector, real-time rotating speed data of the fan speed regulator and a real-time control process state instruction of the switching value module, and transmits a fan rotating speed adjustment instruction to the fan speed regulator to finish the accurate control of the stepped fan speed increase and the stepped fan speed decrease;
8) The real-time data management module transmits real-time data of the detector, real-time rotating speed data of the fan speed regulator, real-time control process state instructions of the switching value module and real-time data control process of the real-time data management module to the data display module, so that the control state of the machine room of the box-type four-stroke internal combustion gas unit is graphically displayed and stored;
9) The switching value module sends out an alarm instruction through a switching value output interface when diagnosing the network connection fault of the switching value module and the data pipeline module; the data pipeline module sends an alarm instruction to the data display module when diagnosing the network connection faults of the switching value module, the fan speed regulator and the detector; the data display module is used for graphically displaying fault conditions when diagnosing network connection faults with the real-time data management module;
10 The safety state and real-time data display, history preservation record inquiry and remote monitoring of the gas generator set machine room are realized through the data display module.
The method classifies the signals in the gas generator set machine room according to the danger level to form the first link with higher danger level and the second link with next higher danger level, and distinguishes different alarm signals, so that the method has the advantages of quick response and high safety level.
Drawings
FIG. 1 is a schematic diagram of a control system according to the present invention
Fig. 2 is a schematic diagram of a first link control flow according to the present invention
Fig. 3 is a schematic diagram of a second link control flow according to the present invention
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention aims to provide a method and a control system for ensuring the safety of a box-type four-stroke internal combustion gas generator set machine room, which accurately judge the occurrence of gas fuel leakage, waste gas leakage and vent filter screen blocking events in the gas generator set machine room through the machine room safety control system, timely disperse flammable and explosive toxic gases, reliably send out vent filter screen blocking alarm, ensure the safety of the box-type four-stroke internal combustion gas generator set machine room, and are easy to implement, convenient to maintain, energy-saving and beneficial to popularization.
A safety method for a gas generator set room, comprising:
classifying signals in a gas generator set machine room according to the risk level to form a first link with a higher risk level and a second link with a second highest risk level;
environmental information in a gas generator set machine room is collected, and then:
If the received alarm signal belongs to the first link, the safety of the gas generator set room is ensured by a gas shutoff mode;
if the received alarm signal belongs to the second link, adjusting the environment in the gas generator set room by adjusting a fan in the gas generator set room until the fault is eliminated;
if the second link cannot eliminate the fault by adjusting the environment in the gas generator set room, the alarm signal enters the first link, and the gas generator set room is protected by shutting off the gas.
The process of classifying the signals in the gas generator set machine room according to the dangerous grade is as follows:
classifying according to the types of signals in a machine room of the gas generator set, and setting a primary threshold and a secondary threshold for each type of signals;
when the value of any one signal M in the gas generator set room is between the primary threshold value and the secondary threshold value, the signal M is a signal with a dangerous level of next high;
and when the value of any one signal M in the gas generator set room is higher than the second-level threshold, the signal M is a signal with higher risk level.
The first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if the serious leakage alarm signal of the gas fuel is received, further judging whether an alarm signal of the machine room temperature is received or not;
when the alarm signal of the machine room temperature is not received, adjusting the fan to the maximum rotation speed, and outputting a command of forcibly cutting off the fuel gas;
when an alarm signal of overhigh temperature of the machine room is received, and the fan outputs a command of forcibly cutting off the fuel gas in an unoperated state.
The first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if the serious leakage alarm signal of the waste gas is received, further judging whether an alarm signal of the machine room temperature is received or not;
when the alarm signal of the temperature of the machine room is not received, outputting a command of forcibly cutting off the fuel gas after the fan speed regulator reaches the maximum rotating speed to operate;
when an alarm signal of overhigh temperature of the machine room is received, and the fan outputs a command of forcibly cutting off the fuel gas in an unoperated state.
The first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if an alarm signal of overhigh temperature of the machine room is received, the running state of the fan is further judged:
outputting a command of forcibly cutting off the fuel gas when the fan is not in an operating state;
and outputting a command for forcibly cutting off the fuel gas when the fan is in an operating state and the fan is in an unoperated state.
The second link includes:
the gas fuel slight leakage alarm signal, the waste gas slight leakage alarm signal, the vent filter screen blockage alarm signal, the machine room atmospheric pressure alarm signal and the machine room temperature alarm signal are obtained by comparing the real-time data with a program reference;
the program reference setting values include: a 1-level gas leakage alarm set value, a 2-level gas leakage alarm set value, a 1-level waste gas leakage alarm set value, a 2-level waste gas leakage alarm set value, a machine room temperature set value 1, a machine room temperature set value 2, a fan running state set value, a fan rotating speed 1 set value, a fan rotating speed 2 set value, a fan maximum ventilation quantity rotating speed set value, a machine room atmospheric pressure set 1, a machine room atmospheric pressure set 2 and a machine room atmospheric pressure low set;
The rotating speed of the fan is divided into a fan rotating speed 1 set value, a fan rotating speed 2 set value and a fan maximum ventilation quantity rotating speed set value;
and when the alarm signal in the second link is received, the ventilation quantity is adjusted by adjusting the rotating speed of the fan, so that the alarm signal in the second link is eliminated.
If the gas fuel slight leakage alarm signal is received, a step fan speed increasing instruction is sent to the fan when the following conditions are met, and the ventilation quantity of a machine room is increased;
the "conditions satisfied simultaneously" are: the real-time rotating speed value of the fan does not reach the maximum rotating speed and simultaneously receives a machine room temperature alarm signal;
when the temperature value in the machine room of the gas generator set continuously rises after receiving a machine room temperature alarm signal, the fan sends out a fan maximum rotating speed operation setting value instruction so that the fan reaches the maximum ventilation quantity;
and when the temperature value in the gas generator set room continuously rises after receiving the room temperature alarm signal, and the temperature value in the gas generator set room is not reduced after the fan runs to the maximum rotation speed, sending a vent filter screen blocking alarm signal.
When an alarm signal of slight leakage of waste gas is received, a step fan-increasing rotating speed instruction is sent to the fan when the following conditions are met, and the ventilation quantity of a machine room is increased;
The "conditions satisfied simultaneously" are:
the real-time rotating speed value of the fan is smaller than the set value of the rotating speed 2 of the fan, and the real-time temperature value in the machine room of the gas generator set is smaller than the set value of the temperature 2 of the machine room;
when the real-time temperature of the gas generator set machine room is greater than the condition that the temperature setting value of the machine room is 2, controlling the maximum rotating speed of the fan to operate;
when the real-time rotating speed value of the fan is larger than the set value of the rotating speed 2 of the fan, if the pressure value of the real-time machine room is smaller than the low setting condition of the atmospheric pressure of the machine room, a vent filter screen blockage alarm signal is sent out;
and if the real-time rotating speed value of the fan is larger than the fan rotating speed 1 set value, controlling the fan to run at the maximum rotating speed if the real-time exhaust gas concentration value is larger than the 1-level exhaust gas leakage alarm set value.
When the real-time machine room temperature value is larger than the machine room temperature set value 1, sending a step fan-increasing rotating speed instruction to the fan when the following conditions are met, and increasing the ventilation quantity of the machine room;
the "conditions satisfied simultaneously" are:
the real-time rotating speed value of the fan is smaller than the set value of the rotating speed 2 of the fan, and the temperature value of the real-time machine room is smaller than the set value 2 of the temperature of the machine room;
when the real-time machine room temperature value is greater than the machine room temperature set value 2, controlling the fan to reach the maximum rotating speed;
And if the real-time rotating speed value of the fan is larger than the set value of the rotating speed 2 of the fan and the pressure value of the real-time machine room is smaller than the low atmospheric pressure setting condition of the machine room, sending a vent filter screen blockage alarm signal.
When the real-time pressure value of the machine room is greater than the machine room atmospheric pressure setting 1, if the real-time machine room atmospheric pressure value is greater than the machine room atmospheric pressure setting 2;
if the fan is not in the rotating speed lifting process, sending a command for reducing the rotating speed of the fan, and realizing the pressure reduction adjustment of the atmospheric pressure of the machine room;
when the real-time machine room pressure value is smaller than the machine room atmospheric pressure setting 1, if the real-time rotating speed of the fan is smaller than the fan rotating speed 2 setting value and the real-time machine room temperature value is smaller than the machine room temperature setting value 2, the rotating speed of the fan is increased, the ventilation quantity of the machine room is increased, and the air pressure is increased;
when the real-time machine room pressure value is greater than the machine room atmospheric pressure setting 1, if the real-time rotating speed of the fan is greater than the fan rotating speed 2 setting condition and the real-time machine room pressure value is less than the machine room atmospheric pressure low setting condition, a filter screen blockage alarm signal is sent.
A safety device for a gas generator set room, comprising:
the sensor assembly is used for collecting environmental information in a gas generator set machine room;
the real-time data management module is used for collecting signals output by the sensor assembly, processing the received signals and outputting related instructions;
The switching value module is connected with the real-time data management module through a bus and is used for receiving the instruction output by the real-time data management module;
the fan speed regulator receives the instruction of the switching value module and controls the running state of the fan;
and the alarm assembly is used for receiving the instruction output by the switching value module and carrying out danger alarm.
The sensor assembly includes:
one or more of a combustible gas detector, a special gas detector, a temperature-sensing detector and an atmospheric pressure detector.
The alarm assembly comprises:
one or more of a fuel gas alarm, a toxic gas alarm and a temperature alarm.
A safety device for a gas generator set room, further comprising:
and the data display module is connected with the real-time data management module and is used for graphically displaying fault conditions.
The invention deals with the safety signals in the gas generator set room, and the specific processing process of various signals is as follows:
the method for monitoring serious danger signals in the machine room by the first link and outputting the running state of the forced control fan speed regulator and the forced cutting-off gas instruction through the switching value module and timely eliminating the serious danger in the machine room of the gas generator set comprises the following steps:
F01: when the serious leakage danger of the gas fuel occurs, the switching value module receives a serious leakage alarm signal of the gas fuel, further compares whether the danger of overhigh temperature of a machine room occurs, further judges whether the maximum rotating speed running condition of the fan is met when the danger of overhigh temperature of the machine room does not occur, executes a forced gas cutting instruction when the fan speed regulator reaches the maximum rotating speed running, enables the fan speed regulator to reach the maximum rotating speed running through the forced fan running instruction when the fan speed regulator does not reach the maximum rotating speed running, and further outputs the forced gas cutting instruction after the fan speed regulator reaches the maximum rotating speed running; in the process of further comparing whether the machine room temperature is too high or not, when the machine room temperature is too high or not, further judging the running state of the fan, stopping the fan by a forced fan stopping instruction when judging the fan to run, and further outputting a forced fuel gas cutting instruction when judging the fan to not run;
f02: when the serious leakage danger of the waste gas occurs, the switching value module receives a serious leakage danger signal of the waste gas, further compares whether the danger of overhigh temperature of a machine room occurs, further judges whether a maximum rotating speed operation condition of a fan is met when the danger of overhigh temperature of the machine room does not occur, executes a forced gas cutting instruction when the fan speed regulator reaches the maximum rotating speed operation, enables the fan speed regulator to reach the maximum rotating speed operation through the forced fan operation instruction when the fan speed regulator does not reach the maximum rotating speed operation, and further outputs the forced gas cutting instruction after the fan speed regulator reaches the maximum rotating speed operation; in the process of further comparing whether the machine room temperature is too high or not, when the machine room temperature is too high or not, further judging the running state of the fan, stopping the fan by a forced fan stopping instruction when judging the fan to run, and further outputting a forced fuel gas cutting instruction when judging the fan to not run;
F03: when the risk of the temperature of the machine room is too high, the switching value module receives an alarm signal of the temperature of the machine room to further judge the running state of the fan, outputs a forced gas cutting-off instruction to cut off gas supply when the fan is judged to be not running, stops the fan from running through a forced fan stopping instruction when the fan is judged to be running, and further judges to output a forced gas cutting-off instruction when the fan is not running;
the method for comparing the real-time data of the second link acquired machine room with the program reference set value, accurately controlling the change of the rotating speed of the fan speed regulator to adjust the ventilation quantity through the real-time data management module, timely eliminating slight danger in the machine room, accurately judging the blocking event of the vent filter screen and real-time controlling the atmospheric pressure and the temperature of the machine room is as follows:
f04: when the gas fuel slight leakage general danger occurs, the real-time gas concentration value of the data collected by the real-time data management module is larger than the 1-level gas leakage alarm set value, after the comparison judges that the gas fuel slight leakage general danger occurs in the machine room, the comparison is further carried out on the condition that the real-time fan rotating speed value is smaller than the fan rotating speed 1 set value, the comparison is further carried out on the condition that the real-time fan rotating speed value is smaller than the fan rotating speed 2 set value, the comparison is further carried out on the condition that the real-time machine room temperature value is smaller than the machine room temperature set value, the data management module sends a step fan rotating speed increasing instruction to the fan speed regulator through a network bus to increase the ventilation quantity of the machine room, and when the comparison is satisfied on the condition that the real-time machine room temperature value is larger than the machine room temperature set value 2, the real-time data management module sends a fan maximum rotating speed running set value instruction to the fan speed regulator through the network bus to enable the fan to reach the maximum ventilation quantity; the process of comparing the real-time fan rotating speed value with the fan rotating speed 2 setting value is further executed, when the comparison meets the condition that the real-time fan rotating speed value is larger than the fan rotating speed 2 setting value, whether the real-time machine room pressure value is smaller than the machine room atmospheric pressure low setting condition is further executed, and when the condition meets the real-time data management module, a filter screen blocking instruction is sent to the switching value module through a network bus; the process of comparing the real-time fan rotating speed value with the fan rotating speed 1 set value is further executed, when the comparison meets the condition that the real-time fan rotating speed value is larger than the fan rotating speed 1 set value, whether the real-time gas concentration value meets the condition that the real-time gas concentration value is larger than the 2-level gas leakage alarm set value is further executed, and when the condition meets the condition, the real-time data management module sends out a fan maximum rotating speed operation set value to the fan speed regulator through a network bus; the process of executing the machine room safety control by the data management control module 201 when the gas fuel slight leakage general danger occurs is transmitted to the data display module 208 through the network bus 100 for graphical data display;
F05: when the general risk of slight leakage of waste gas is larger than the waste gas concentration reference value 1, the real-time data management module further executes comparison of the real-time fan rotating speed value and the fan rotating speed 1 set value after comparing and judging that the general risk of slight leakage of waste gas is generated in the machine room, when the comparison meets the condition that the real-time fan rotating speed value is smaller than the fan rotating speed 1 set value, the real-time fan rotating speed value and the fan rotating speed 2 set value are further executed, when the comparison meets the condition that the real-time fan rotating speed value is smaller than the fan rotating speed 2 set value, the real-time data management module further executes the comparison condition of the real-time machine room temperature value and the machine room temperature set value 2, when the comparison meets the condition that the real-time machine room temperature value is smaller than the machine room temperature set value 2, the real-time data management module sends a step fan rotating speed increasing instruction to the fan speed regulator through a network bus to increase the ventilation volume, and when the comparison meets the condition that the real-time machine room temperature value is larger than the machine room temperature set value 2, the real-time data management module sends a fan maximum rotating speed running set value instruction to the fan speed regulator to reach the maximum ventilation volume; the process of comparing the real-time fan rotating speed value with the fan rotating speed 2 setting value is further executed, when the comparison meets the condition that the real-time fan rotating speed value is larger than the fan rotating speed 2 setting value, whether the real-time machine room pressure value is smaller than the machine room atmospheric pressure low setting condition is further executed, and when the condition meets the real-time data management module, a filter screen blocking instruction is sent to the switching value module through a network bus; the process of comparing the real-time fan rotating speed value with the fan rotating speed 1 set value is further executed, when the comparison meets the condition that the real-time fan rotating speed value is larger than the fan rotating speed 1 set value, the process of comparing whether the real-time waste gas concentration value meets the condition that the real-time waste gas concentration value is larger than the 1-level waste gas leakage alarm set value is further executed, and when the condition meets the condition, the real-time data management module sends a fan maximum rotating speed operation set value to the fan speed regulator through a network bus; the process of executing the machine room safety control by the data management control module 201 when the slight leakage of the waste gas generally occurs is transmitted to the data display module 208 through the network bus 100 for graphical data display;
F06: the real-time control of the temperature of the machine room realizes the adjustment of the ventilation quantity by controlling the rotation speed change of the fan speed regulator, and the air temperature in the machine room meets the operation requirement of the internal combustion gas generator set; comparing the real-time machine room temperature value acquired by the real-time data management module with a machine room temperature set value 1, further executing the condition of comparing the real-time fan speed value with a fan speed 2 set value when the real-time machine room temperature value is larger than the machine room temperature set value 1, further executing the condition of comparing the real-time machine room temperature value with the machine room temperature set value 2 when the comparison meets the condition that the real-time machine room temperature value is smaller than the machine room temperature set value 2, sending a step fan speed increasing instruction to the fan speed regulator by the real-time data management module through a network bus to increase the ventilation quantity of the machine room, and sending a fan maximum speed operation set value instruction to the fan speed regulator by the real-time data management module through the network bus when the comparison meets the condition that the real-time machine room temperature value is larger than the machine room temperature set value 2 to enable the fan to reach the maximum ventilation quantity; the process of comparing the real-time fan rotating speed value with the fan rotating speed 2 setting value is further executed, when the comparison meets the condition that the real-time fan rotating speed value is larger than the fan rotating speed 2 setting value, whether the real-time machine room pressure value is smaller than the machine room atmospheric pressure low setting condition is further executed, and when the condition meets the condition, the real-time data management module sends a filter screen blocking instruction to the switching value module and the data display module through the network bus; the data management control module 201 transmits the control process to the data display module 208 for graphical data display through the network bus 100;
F07: the real-time control of the atmospheric pressure of the machine room realizes the adjustment of the ventilation quantity by controlling the rotation speed change of the fan speed regulator, and the atmospheric pressure in the machine room is stably satisfied with the operation requirement of the internal combustion gas generator set; comparing the real-time machine room pressure value acquired by the real-time data management module with the machine room atmospheric pressure setting 1, further executing the process to compare the machine room atmospheric pressure value with the machine room atmospheric pressure setting 2 when the comparison meets the condition that the machine room pressure value is larger than the machine room atmospheric pressure setting 1, further executing the process to judge whether the step fan lift rotating speed process is performed when the real-time machine room atmospheric pressure value meets the condition that the machine room atmospheric pressure setting 2, and sending a step fan lift rotating speed instruction to a fan speed regulator by the real-time data management module through a network bus to reduce the ventilation quantity of the machine room when the step fan lift rotating speed instruction is not executed, so as to realize the pressure reduction adjustment of the machine room atmospheric pressure; in the process of judging whether the step fan lift rotating speed process is carried out or not, when judging that the step fan lift rotating speed is carried out, the real-time data flow of the second link acquisition machine room is also indicated to have any process control of the gas fuel slight leakage general danger control process, the waste gas slight leakage general danger control process and the real-time control machine room temperature control process, and at the moment, even if the real-time machine room atmospheric pressure value reaches a condition of being more than the machine room atmospheric pressure set 2, the flow does not carry out the step fan lift rotating speed process; in the process of executing the step fan speed reducing flow, the real-time data management module sends a step fan speed increasing instruction to the fan speed regulator through the network bus to reduce the fan speed and reduce the ventilation quantity in the machine room, when the real-time machine room pressure value monitored by the atmospheric pressure detector collected by the real-time data management module is smaller than the machine room atmospheric pressure setting 2, the condition that the machine room atmospheric pressure value is set to 2 with the machine room atmospheric pressure is not met, the step fan speed reducing flow is not executed, at the moment, the fan speed regulator is stable, the machine room atmospheric pressure value is stable along with the speed stabilizing of the fan speed regulator, the fan provides stable air quantity in the machine room, and the operation requirement of the internal combustion gas generator set is met due to the fact that the atmospheric pressure in the machine room is stable; when the real-time machine room pressure value monitored by the real-time data management module is smaller than the machine room atmospheric pressure setting 1, the condition that the machine room atmospheric pressure value is larger than the machine room atmospheric pressure setting 1 is not met is compared, the process further executes the condition that the real-time machine room pressure value is larger than the machine room atmospheric pressure setting 1, when the real-time data rotating speed value of the fan speed regulator is smaller than the machine room rotating speed 2 setting value, the process further executes the condition that the real-time machine room temperature value is smaller than the machine room temperature setting 2, when the comparison meets the condition that the real-time machine room temperature value is smaller than the machine room temperature setting 2, the process executes the step fan speed increasing rotating process, the real-time data management module sends a step fan speed increasing instruction to the fan speed regulator through a network bus to increase the ventilation quantity of the machine room, and accordingly the machine room atmospheric pressure value is increased, when the real-time machine room atmospheric pressure value monitored by the real-time data management module is larger than the machine room atmospheric pressure setting 1, the process does not further execute the step fan speed increasing process, the rotating speed of the fan speed regulator is stable, the machine room atmospheric pressure value is stable, and the stable air quantity of the machine room is provided into the machine room, and stable air quantity is ensured to meet the requirement of stable operation of an internal combustion gas generator set in the machine room, and the stable air pressure is met; when the comparison does not meet the condition that the atmospheric pressure value of the machine room is greater than the atmospheric pressure setting 1 of the machine room, the process further executes a process of comparing the real-time fan rotating speed value with the fan rotating speed 2 setting value, when the real-time data rotating speed value of the fan speed regulator reaches the fan rotating speed 2 setting value and the comparison meets the condition that the real-time fan rotating speed value is greater than the fan rotating speed 2 setting value, the process further executes a process of comparing whether the real-time machine room pressure value is less than the low setting condition of the machine room atmospheric pressure is met, and when the comparison condition is met, the real-time data management module sends a filter screen blockage alarm instruction to the switching value module through a network bus; the data management control module 201 transmits the control process to the data display module 208 for graphic data display through the network bus 100;
F08: in any one of the gas fuel slight leakage general risk control process, the waste gas slight leakage general risk control process, the real-time control machine room temperature and the real-time control machine room atmospheric pressure control process, when the process further executes a process of comparing the real-time fan rotating speed value with the fan rotating speed 2 set value, when the comparison meets the condition that the real-time fan rotating speed value is larger than the fan rotating speed 2 set value, further executes the comparison whether the real-time machine room pressure value is smaller than the machine room atmospheric pressure low set condition or not, and when the comparison condition is met, the real-time data management module sends a filter screen blockage alarm instruction through the network bus switching value module;
f09: the real-time data management module transmits real-time data of the machine room and a real-time control process state instruction of the switching value module to the data display module, so that graphical data of the safety control of the machine room of the gas generator set are displayed in real time; the real-time data of the machine room comprise a gas concentration value, an exhaust gas concentration value, a machine room air temperature value, a machine room atmospheric pressure value and a fan rotating speed value; the on-off quantity module controls the process state in real time and comprises a gas alarm state, a toxic gas alarm state, a temperature alarm state, a fan speed regulator running state, a fan maximum rotating speed control state, a forced fan stop control state and a forced gas cutting control state in a machine room;
F10: further, program reference setting value data are set through the data display module, and setting of the program reference setting value in the real-time data management module is completed; the program reference set value comprises a 1-level gas leakage alarm set value, a 2-level gas leakage alarm set value, a 1-level waste gas leakage alarm set value, a 2-level waste gas leakage alarm set value, a machine room temperature set value 1, a machine room temperature set value 2, a fan running state set value, a fan rotating speed 1 set value, a fan rotating speed 2 set value, a fan maximum ventilation quantity rotating speed set value, a machine room atmospheric pressure set value 1, a machine room atmospheric pressure set value 2 and a machine room atmospheric pressure low set;
f11: further, when the switching value module diagnoses the network connection fault with the data pipeline module, an alarm instruction is sent out through a switching value output interface; the data pipeline module diagnoses and switches the quantity module, the fan speed regulator, the combustible gas detector, the special gas detector, the temperature sensing detector and the atmospheric pressure detector to send an alarm instruction to the data display module when the fault is connected through the network bus; the data display module is used for graphically displaying fault conditions when diagnosing network connection faults with the real-time data management module.
Specific example I: in order to complete the safety control of the machine room of the box-type four-stroke internal combustion gas generator set, the invention monitors and controls the gas fuel leakage, the waste gas leakage, the air temperature of the machine room and the air pressure of the machine room of the gas generator set through a machine room safety control system combining a first link with a second link; the first link is used for completing monitoring of serious danger signals in the machine room, outputting a forced control fan speed regulator running state and a forced gas cutting-off instruction through the switching value module, and timely eliminating serious danger in the machine room of the gas generator set; the second link utilizes the comparison of the real-time data of the collected machine room and the program reference set value, and the real-time data management module is used for accurately controlling the rotation speed change of the fan speed regulator to adjust the ventilation quantity of the fan, so that slight danger in the machine room is eliminated in time, the blocking event of the vent filter screen is accurately judged, and the temperature of the machine room and the atmospheric pressure of the machine room are controlled in real time. The serious danger is the serious leakage danger of the gas fuel, the serious leakage danger of the waste gas and the danger of overhigh temperature of a machine room; the forced control fan speed regulator running state comprises a forced fan stopping instruction and a forced fan running instruction, and is that the first link switching value module ensures that the gas generator set machine room safely makes a switching value instruction output by forced control by judging the serious danger signal state and combining the fan speed regulator state; the forced fan stopping instruction is an instruction for immediately stopping the operation of the forced fan speed regulator from the operation state; the forced fan operation instruction is an instruction for enabling the forced fan speed regulator to reach the maximum operation rotating speed in the operation or stop state; the forced cut-off gas instruction is an instruction for forcibly cutting off fuel supply to the gas generator set; the slight danger is that the gas fuel slightly leaks and the exhaust gas slightly leaks.
Specific parameters are shown in the following table:
in order to complete the safety control of the box-type four-stroke internal combustion gas generator set room, as shown in fig. 1, the invention monitors and controls the gas fuel leakage, the waste gas leakage, the room air temperature and the room air pressure in the box-type room by a first link combined with a second link of a room safety control system, wherein the first link is used for monitoring serious danger in the room, and the switching value module 101 is used for forcedly controlling the running state of the fan speed regulator 206 and outputting a forcedly-cut-off gas signal 105 so as to timely eliminate the serious danger in the box-type room; the second link compares the acquired real-time data of the machine room with the program reference set value, and accurately controls the rotation speed change of the fan speed regulator 206 to adjust the ventilation quantity of the fan 207 through the real-time data management module 201, so as to eliminate slight danger in the machine room, adjust the atmospheric pressure stability in the machine room and accurately judge the blocking event of the vent filter screen; the serious danger is the serious leakage danger of the gas fuel, the serious leakage danger of the waste gas and the danger of overhigh temperature of a machine room; the slight risks are slight leakage of gaseous fuel, slight leakage of exhaust gas, high room temperature and risk of filter clogging.
As shown in fig. 1, the first link uses a switching value module 101 as a serious danger control unit, the switching value module 101 includes a switching value input/output interface and a communication interface 110, the switching value input interface is used for receiving a gas alarm 102, a toxic gas alarm 103, a temperature alarm 104, a fan operation signal 106 of a fan speed regulator 206 and a fan maximum rotation speed signal 107 of the fan speed regulator 206, the switching value output interface is used for sending a command of forcibly cutting off the gas 105, a command of forcibly stopping the fan 108 and a command of forcibly stopping the fan operation 109, the communication interface 110 is connected to a real-time data management module 201 of the network bus 100 through RS485, and the command of forcibly stopping the fan 108 is a command of immediately stopping the fan speed regulator 206 from an operation state when the switching value module 101 executes a control command sent by a machine room safety control flow through the switching value output interface; the forced fan operation instruction 109 is an instruction for forcing the fan speed regulator 206 to achieve the maximum ventilation rate rotation speed of the fan 207 from the operation or stop state by executing a control instruction sent by the machine room safety control flow through the switching value output interface by the switching value module 101; the fan speed regulator 206 of the embodiment is used for starting the fan, and after the switching value input interface of the fan receives the forced fan operation command 109, the fan speed regulator 206 operates at the set maximum operation rotation speed of 2000r/min, and the fan cannot stop again without releasing the forced fan starting command; the fan speed regulator 206 of the present example is configured to stop the operation of the fan 207 after the switching value input interface for stopping the fan receives the forced fan stopping instruction 108, and the fan speed regulator 206 cannot be started without releasing the forced fan stopping instruction 108; the fan speed regulator 206 sends out a closing state of a 1 st path switching value signal to serve as a fan speed regulator operation signal 106 when the operation rotating speed of the fan speed regulator 206 reaches a fan operation state set value of 50r/min, and the 1 st path switching value closing signal is converted into an opening state when the fan speed regulator 206 stops; outputting a closing state of the 2 nd switching value signal as a maximum fan rotating speed signal 107 when the rotating speed of the fan speed regulator reaches 2000r/min, and converting the 2 nd switching value closing signal into an opening state when the rotating speed of the fan speed regulator is smaller than 2000 r/min; the forced cut-off gas instruction 105 is an instruction for forcing the cut-off gas pipeline to provide fuel for the gas generator set by the switch value module 101 executing a closed state signal output by a machine room safety control flow through a switch value output interface; the gas alarm 102 in the embodiment of the invention sends out a switching value gas fuel serious leakage signal when detecting that the concentration of carbon monoxide (CO) of gas fuel in a machine room reaches 50% LEL of a serious leakage alarm value, the toxic gas alarm 103 sends out a switching value waste gas serious leakage signal when detecting that the concentration of waste gas in the machine room reaches 50% LEL of the serious leakage alarm value, and the temperature alarm 104 sends out a switching value machine room temperature over-high alarm signal when detecting that the temperature in the machine room reaches 55 ℃; the switching value module 101 in the embodiment is a programmable controller for collecting 8 paths of switching value signals and outputting 8 paths of switching value signals, and is in a MODBUS-RTU communication mode, wherein the power supply voltage is DC24V, an RS485 communication interface;
As shown in fig. 1, the second link takes a real-time data management module 201 as a slight hazard control unit, receives real-time data of a combustible gas detector 202, a special gas detector 203, a temperature detector 204, an atmospheric pressure detector 205, a fan speed regulator 206 and a switching value module 101 through a network bus 100, transmits a fan rotation speed adjustment instruction to the fan speed regulator 206 through the network bus 100 to complete accurate control of ventilation quantity of a ventilator 207, and transmits the real-time data, the real-time data of the fan speed regulator 206, the real-time data of the switching value module 101 and a control process to a data receiving display module 208 through the network bus 100 to realize graphical display and storage of control states of a machine room of a box-type four-stroke internal combustion gas unit; the combustible gas detector 202 is selected according to the components of the combustible gas, in the embodiment of the invention, the combustible gas fuel is coke oven gas, the main component is carbon monoxide, the carbon monoxide gas detector is selected, the concentration measuring range is 0 ppm-1000 ppm, and the real-time data value of the carbon monoxide monitored by the combustible gas detector 202 is transmitted to the real-time data management module 201 through the communication interface; as is well known in the art, adults can tolerate 50ppm,200ppm maximum carbon monoxide in air, causing a slight dizziness hazard; therefore, in the embodiment of the invention, the concentration value of the gas fuel in the box-type machine room is detected in real time through the combustible gas detector 202, and the dangerous alarm values of 30ppm of the 1-level gas leakage alarm set value and 150ppm of the 2-level gas leakage alarm set value are set through the embodiment, so that the accurate monitoring of the general danger of slight leakage of the gas fuel in the process of collecting real-time data F201 of the machine room in the second link of the box-type machine room is completed; the special gas detector 203 is selected according to the components of the engine exhaust, in the embodiment of the invention, the main component in the engine exhaust is carbon monoxide, the carbon monoxide gas detector is selected, the concentration measuring range is 0 ppm-1000 ppm, and the real-time data value of the carbon monoxide monitored by the special gas detector 203 is transmitted to the real-time data management module 201 through the communication interface; according to the embodiment of the invention, the concentration value of the waste gas in the box-type machine room is detected in real time by the special gas detector 203, and the dangerous alarm values of 30ppm of the 1-level waste gas leakage alarm set value and 150ppm of the 2-level waste gas leakage alarm set value are set by the embodiment, so that the accurate monitoring of the general danger of slight leakage of the waste gas in the process of collecting real-time data F201 of the machine room by the second link of the box-type machine room is completed; the temperature detector 204 monitors the temperature value in the machine room in real time, and as known in the technical field, the proper air temperature is favorable for the stable operation of the internal combustion engine, and the running power of the internal combustion engine is reduced when the temperature exceeds 45 ℃, so that the embodiment of the invention detects the real-time temperature value in the box-type machine room in real time through the temperature detector 204, and controls the temperature in the machine room through the condition that the temperature is set to be 35 ℃ for the machine room temperature set value 1 and 40 ℃ for the machine room temperature set value 2, and ensures that the air temperature in the box-type machine room meets the running safety of the internal combustion engine; the atmospheric pressure detector 205 monitors the atmospheric pressure value in the machine room in real time, as is known in the art, the output power of the internal combustion engine is calibrated according to the condition of the atmospheric pressure value of 1 standard 101.325kPa specified in the statement of the tenth international metering institute, and in order to ensure the normal operation of the internal combustion engine in the box-type machine room, in the embodiment of the invention, the atmospheric pressure condition of the machine room is set to be 102kPa, the atmospheric pressure of the machine room is set to be 2kPa, the atmospheric pressure of the machine room is set to be 105kPa, and the atmospheric pressure of the machine room is set to be 101kPa, so that the atmospheric pressure value range for ensuring the safety of the machine room is 101kPa to 105kPa to meet the operation safety of the internal combustion engine; the fan rotating speed adjusting instruction comprises a step fan increasing rotating speed instruction and a step fan decreasing rotating speed instruction; the step fan speed increasing command is a speed adjusting function value transmitted to the fan speed regulator 206 by the real-time data management module 201 through the network bus 100, the function value formula in the embodiment of the invention is Nt1+t2+100, N is a real-time speed value of the fan speed regulator, t1 is adjusting time, t2 is interval time, t1 is 5 seconds, t2 is 30 seconds in the application of the embodiment of the invention, for example, the real-time speed value of the fan speed regulator 206 is 1400r/min, the step fan speed increasing command sent to the fan speed regulator 206 by the real-time data management module 201 through the network bus 100 is to adjust the fan 207 speed to 1500r/min in 5 seconds, and the fan 207 speed is increased to 1600r/min in 5 seconds after 30 seconds; the step fan speed reducing instruction is a speed adjusting function value transmitted to the fan speed regulator 206 by the real-time data management module 201 through the network bus 100, the function value formula in the embodiment of the invention is Nt1+t2-200, N is a real-time speed value of the fan speed regulator, t1 is adjusting time, t2 is interval time, t1 is 5 seconds, t2 is 30 seconds in the application of the embodiment of the invention, for example, the real-time speed value of the fan speed regulator 206 is 1800r/min, the step fan speed reducing instruction sent to the fan speed regulator 206 by the real-time data management module 201 through the network bus 100 is to adjust the fan 207 speed to 1600r/min in 5 seconds, and the fan 207 speed is reduced to 1400r/min in 5 seconds after 30 seconds; the real-time data management module 201 in this embodiment is an embedded microcomputer adopting a WINCE operating system, a power supply voltage DC24V, an RS485 communication interface, and a MODBUS-RTU communication mode;
As shown in fig. 2, the method for monitoring the serious danger F101 in the machine room by the first link according to the embodiment of the present invention, which forcibly controls the running state of the fan speed regulator 206 and outputs the signal 105 for forcibly cutting off the fuel gas through the switching value module 101, and timely eliminates the serious danger in the box-type machine room, is as follows:
s01: the serious leakage risk of the gas fuel is the leakage risk caused by a gas pipeline in the machine room, and the serious leakage risk of the gas fuel is monitored through a gas alarm 102 arranged in the machine room, for example, the fatigue fracture of a gas pipeline caused by vibration or the leakage risk of a large amount of gas caused by loosening of a gas pipeline connecting flange; when a large amount of gas leaks to cause that the gas concentration in the machine room reaches 50% LEL of a serious leakage alarm set value of switching value gas, the gas alarm 102 outputs a switching value closing signal, after the switching value module 101 receives the serious leakage alarm signal of gas fuel, the condition of comparing the serious leakage F102 of the gas in the first link control machine room in a serious danger flow F101 is met, whether the machine room temperature is too high is further compared with a dangerous flow F104, the machine room temperature is excessively high, for example, a box-type machine room vent filter screen is seriously blocked in a short time under the influence of severe dust and air, at the moment, the amount of fresh air entering the machine room is reduced, the radiant heat of the machine room gas generator set cannot be circulated outside a box body, the temperature of the air in the machine room is quickly increased to cause the excessively high risk of the air temperature of the machine room, and meanwhile, when the serious leakage of the gas occurs in the machine room, the machine room is not timely dispersed under the influence of filter screen blocking; in order to avoid serious leakage of the gas fuel and ignition by high-temperature air and to avoid the influence of the high-temperature air on the normal operation of the internal combustion generator set, the temperature alarm 104 in the embodiment of the invention outputs a switching value machine room temperature too high closing signal when the temperature in the machine room reaches the machine room temperature too high alarm set value of 55 ℃; in the process of further comparing whether the risk F104 of the machine room temperature is too high or not by the program, when the input interface of the switching value module 101 does not monitor the closing signal of the machine room temperature which is output by the temperature alarm 104 and is too high, the process F104 compares and judges that the risk of the machine room temperature is not too high, and further executes the operation process F105 of judging whether the maximum rotating speed of the fan is met or not; in the embodiment of the invention, the motor frequency converter is utilized to realize the rotation speed control of the fan speed regulator, when the running rotation speed of the fan speed regulator 206 is greater than the fan running state set value of 50r/min, a 1 st path of closed switching value signal is output to serve as a fan running signal 106, and when the running rotation speed of the fan speed regulator 206 reaches the fan maximum ventilation quantity rotation speed set value of 2000r/min, a 2 nd path of closed effective switching value signal is output to serve as a fan maximum rotation speed signal 107; judging that the maximum operation speed of the fan speed regulator 206 is 2000r/min when the maximum speed signal 107 of the fan is monitored by the input interface of the switching value module 101, meeting the maximum speed operation condition F105 of the fan, and forcibly cutting off the fuel gas flow F108 in the flow, wherein the output interface of the switching value module 101 sends out a forced fuel gas cutting-off instruction 105 to stop the fuel gas from entering a machine room to avoid serious leakage danger expansion of the fuel gas, and the gas generator set in an operation state stops working due to fuel gas interruption to avoid the occurrence of machine room fire danger when the serious leakage of the fuel gas is caused by unpredictable sparks; in the process of further executing and judging whether the fan maximum rotation speed operation condition F105 is met, when the operation rotation speed of the fan speed regulator 206 is smaller than the fan operation state set value 2000r/min, the 2 nd path of switching value signal is in an off state, the switching value module 101 input interface does not monitor the fan maximum rotation speed signal 107 to judge that the fan speed regulator 206 does not reach the 2000r/min maximum operation rotation speed, the process F105 further executes the forced fan operation process F107, at this moment, the switching value module 101 output interface sends out a forced fan operation instruction 109, after the switching value input interface of the fan speed regulator 206 is used for starting the fan receives the forced fan operation instruction 109, the fan speed regulator 206 operates at the fan maximum ventilation speed set value 2000r/min, at this moment, the fan speed regulator 206 outputs the fan maximum rotation speed signal 107, the fan 207 rapidly evacuates a large amount of gas leakage accumulated in the machine room at the maximum ventilation speed, danger is eliminated, personal safety is protected, when the switching value module 101 input interface monitors the fan maximum rotation speed signal 107, the fan speed regulator 206 is judged to operate at the 2000r/min maximum rotation speed, the process F105 further executes the forced cut-off gas flow F108, the switching value output interface is executed, the switching value is stopped, the switching value output interface is stopped, and the serious dangerous gas flow is avoided from entering the machine room is stopped, and the dangerous gas flow is stopped; in the process of further comparing whether the machine room temperature is too high or not, when the input interface of the switching value module 101 monitors that the temperature alarm 104 outputs a closing signal of the temperature alarm 104 for outputting the temperature too high of the machine room, the process F104 further executes a process F106 for judging whether the fan operates, when the input interface of the switching value module 101 monitors the fan operation signal 106, the process F106 further executes a forced fan stopping process F109, at the moment, the switching value output interface of the switching value module 101 sends a forced fan stopping instruction 108, and the fan speed regulator 206 timely stops the fan 207 from operating after receiving the switching value forced fan stopping instruction 108, so that fresh air in the machine room does not enter any more to avoid fire hazard; in the further executing process of judging whether the fan is operated or not, when the operation rotation speed of the fan speed regulator 206 is less than the fan operation state set value of 50r/min, the 1 st path of switching value signal is in an off state, the switching value module 101 does not receive the 1 st path of switching value signal which is effective in closing to judge that the fan is in an off state, the process F105 executes the forced gas cutting process F108, and at the moment, an output interface of the switching value module 101 sends an on-off forced gas cutting instruction 105 to stop gas from entering a machine room to avoid serious leakage risk expansion, and a gas generator set in the operation state stops working due to gas interruption; when serious leakage danger of the gas fuel occurs, the process of executing the machine room safety control by the switching value module 101 is transmitted to the real-time data management module 201 through the network bus 100 to record and save events, and the data management control module 201 transmits the flow of executing the machine room safety control by the switching value module 101 to the data display module 208 through the network bus 100 to carry out graphical display;
S02: the serious leakage risk of the waste gas is the leakage risk caused by an internal gas pipeline in a machine room, the serious leakage risk of the waste gas is monitored through a toxic gas alarm 103 installed in the machine room, for example, the fatigue fracture of an engine exhaust pipeline caused by vibration or the large amount of leakage risk of the waste gas caused by loosening of an exhaust pipeline connecting flange, when the concentration of the waste gas in the machine room reaches a switching value and serious leakage alarm set value of 50% LEL due to the large amount of leakage of the waste gas, the toxic gas alarm 103 outputs a switching value closing signal, after the switching value module 101 receives the serious leakage risk signal of the waste gas, the condition of comparing the serious leakage F103 in a serious risk process F101 in a first link control machine room is met, whether a machine room temperature is too high or not is further compared, when the input interface of the switching value module 101 does not monitor the switching value machine room temperature too high closing signal output by the temperature alarm 104 is not monitored, the process F104 is compared and judges that the machine room temperature is not too high, and whether the maximum rotating speed operation process F105 of a fan is met is further executed; judging that the maximum operation speed of the fan speed regulator 206 is 2000r/min when the maximum fan speed signal 107 is monitored by the input interface of the switching value module 101, and meeting the maximum fan speed operation condition F105, executing the forced cut-off gas control flow F108, wherein the output interface of the switching value module 101 sends out a forced cut-off gas command 105, and the gas generator set in an operation state can not generate waste gas any more due to gas cut-off and stop working, and meanwhile, the fan 207 rapidly evacuates serious leakage danger of the waste gas in a machine room with the maximum ventilation quantity; in the process of further executing and judging whether the maximum rotating speed operation condition F105 of the fan is met, when the operating rotating speed of the fan speed regulator 206 is smaller than the fan operating state set value 2000r/min, the 2 nd path of switching value signal is in an off state, the switching value module 101 input interface does not monitor the fan maximum rotating speed signal 107 and judges that the fan speed regulator 206 does not reach the maximum operating rotating speed of 2000r/min, the process F105 further executes the forced fan operating process F107, at this moment, the switching value module 101 output interface sends out a forced fan operating instruction 109, after the switching value input interface of the fan speed regulator 206 is used for starting the fan receives the forced fan operating instruction 109, the fan speed regulator 206 operates at the fan maximum ventilating value set value 2000r/min, at this moment, the fan speed regulator 206 outputs the fan maximum rotating speed signal 107, so that a large amount of exhaust gas accumulated in the maximum ventilating value rapid evacuation machine room of the fan 207 is eliminated, danger and personal safety are protected, when the switching value module 101 input interface monitors the fan maximum rotating speed signal 107, the fan speed regulator 206 is judged to be at the maximum operating rotating speed of 2000r/min, the process F105 further executes a forced gas flow F108, after the switching value module 206 receives the forced fan operating instruction 109, the forced switching value is sent out by the switching value input interface, the forced switching value 101 sends out a gas flow for stopping the gas generator set to stop the working state, and the generator set can not work due to the operation of the gas generator set; in the process of further comparing whether the machine room temperature is too high or not, when the input interface of the switching value module 101 monitors that the temperature alarm 104 outputs a closing signal of the temperature alarm 104 for outputting the temperature too high of the machine room, the process F104 further executes a process F106 for judging whether the fan operates, when the input interface of the switching value module 101 monitors the fan operation signal 106, the process F106 further executes a forced fan stopping process F109, at the moment, the switching value output interface of the switching value module 101 sends a forced fan stopping instruction 108, and the fan speed regulator 206 timely stops the fan 207 from operating after receiving the switching value forced fan stopping instruction 108, so that fresh air in the machine room does not enter any more to avoid the high-temperature waste gas leaking to cause fire hazard; in the further executing process of judging whether the fan is operated or not, when the operation rotation speed of the fan speed regulator 206 is less than the fan operation state set value of 50r/min, the 1 st path of switching value signal is in an off state, the switching value module 101 does not receive the 1 st path of switching value signal which is effective in closing to judge that the fan is in an off state, the process F105 executes the forced gas cutting-off process F108, at the moment, the output interface of the switching value module 101 sends out a switching value forced gas cutting-off instruction 105, and the gas generator set in the operation state does not generate waste gas any more because of gas supply interruption stop work; when serious leakage danger of waste gas occurs, the process state of the switching value module 101 for executing the machine room safety control is transmitted to the data management control module 201 through the network bus 100 to record and save events, and the data management control module 201 transmits the flow of the switching value module 101 for executing the machine room safety control to the data display module 208 through the network bus 100 to carry out graphical display;
S03: when the temperature in the machine room reaches the temperature of the machine room and the temperature alarm 104 outputs a switching value machine room temperature too high closing signal when the temperature in the machine room reaches the temperature of the machine room temperature too high alarm set value of 55 ℃, when an input interface of the switching value module 101 monitors that the temperature alarm 104 outputs the switching value machine room temperature too high closing signal, the comparison condition of the machine room temperature too high dangerous flow F104 in a serious dangerous flow F101 in a first link control machine room is met, the flow F104 further executes a flow F106 for judging whether a fan operates, when the operation rotating speed of a fan speed regulator 206 is smaller than the fan operation state set value of 50r/min, the 1 st switching value signal is in an off state, the switching value module 101 does not receive the 1 st switching value signal for closing to judge that the fan is in an unoperated state, the flow F106 executes a forced cutoff gas flow F108, and at the moment, the output interface of the switching value module 101 sends a switching value forced cutoff gas command 105, a gas generator set in an operating state does not generate radiant heat any more due to gas outage, and the continuous increase of the temperature of the machine room is avoided; when the switching value module 101 input interface monitors a fan operation signal 106, the process F106 further executes a forced fan stop process F109, at this time, the switching value output interface of the switching value module 101 sends a forced fan stop instruction 108, and after receiving the switching value forced fan stop instruction 108, the fan speed regulator 206 stops the fan 207 in time, so that fresh air is not entered in a machine room to avoid the danger of high-temperature fire, and further, when the fan stops operation, the switching value module 101 does not receive a 1 st path of switch value signal which is effective to close to judge that the fan is in a non-operation state, the process F106 executes a forced gas cut-off process F108, at this time, the switching value output interface of the switching value module 101 sends a switching value forced gas cut-off instruction 105 to stop gas entering the machine room, so that the gas generator set stops working; when the risk of the machine room temperature is too high, the flow of the machine room safety control executed by the switching value module 101 is transmitted to the data management control module 201 through the network bus 100 to record and save events, and the flow of the machine room safety control executed by the switching value module 101 is transmitted to the data display module 208 through the network bus 100 by the data management control module 201 to be graphically displayed;
As shown in fig. 3, the method for accurately controlling the rotation speed change of the fan speed regulator 206 to adjust the ventilation quantity of the fan 207 by the real-time data management module 201 and timely eliminating slight danger in the machine room, adjusting the atmospheric pressure stability in the machine room and accurately judging the blocking event of the vent filter screen by comparing the real-time data of the collected machine room with the program reference set value in the second link according to the embodiment of the invention is as follows:
s04: the general risk of gas fuel slight leakage is the risk of gas leakage existing in the operation or maintenance process of the gas engine in the box-type machine room, and the general risk of gas fuel slight leakage is monitored by the combustible gas detector 202 arranged in the machine room, for example, the risk of slight gas leakage caused by slight cracking of welding seams of gas pipelines caused by vibration or damage of sealing gaskets of connecting flanges; when the real-time gas concentration value monitored by the combustible gas detector 202 collected by the real-time data management module 201 is greater than the level 1 gas leakage alarm set value by 30ppm, the comparison flow F202 of the gas concentration value of the flow F201 and the level 1 gas leakage alarm set value judges that the gas fuel is slightly leaked and generally dangerous, the flow F201 further executes the comparison condition F203 of the real-time fan speed value and the fan speed 1 set value, the real-time data management module 201 reads the real-time speed value of the fan speed regulator 206 through the network bus 100 and compares the real-time speed value of the fan speed regulator 206 with the 1600r/min fan speed 1 set value set by a program, when the real-time speed value of the fan speed regulator 206 is smaller than the 1600r/min fan speed 1 set value, the flow F203 further executes the comparison condition F209 of the real-time fan speed value and the fan speed 2 set value, when the real-time data speed value of the fan speed regulator 206 is smaller than the 1800r/min fan speed 2 set value, the real-time data management module 201 reads the real-time temperature data in the machine room detected by the temperature sensor 204 through the network bus 100, and when the real-time data detected by the temperature sensor 204 in the machine room temperature sensor 204 is smaller than the 1600r/min fan speed 1 set value, and the real-time data is increased by the fan speed 213 is instructed by the fan speed regulator fan speed 213 when the real-time data of the fan speed regulator 206 is smaller than the 1800r/min fan speed 2 set value, and the real-time data is further executed by the flow F209; as known in the art, the ventilation quantity can be increased by increasing the rotation speed of the fan to enable the air pressure in the machine room to be increased the same, and the embodiment of the invention enables the ventilation quantity in the machine room to be increased step by a step rotation speed increasing instruction to realize timely evacuation of slight leakage of waste gas, and the consequent pressure change of the machine room is controlled by the machine room pressure flow F214 in the real-time data flow F201 of the second link acquisition machine room; in the process of further executing the comparison condition F212 of the real-time machine room temperature value and the machine room temperature set value 2, when the real-time temperature data in the machine room detected by the temperature sensing detector 204 is greater than the machine room temperature set value 2 of 40 ℃, and the comparison meets the condition that the real-time machine room temperature value is greater than the machine room temperature set value 2, executing the fan maximum rotating speed flow F207, and the real-time data management module 201 sends a fan maximum rotating speed operation set value instruction of 2000r/min to the fan speed regulator 206 through the network bus 100, so that the fan reaches the maximum ventilation volume, and the maximum ventilation volume in the machine room is ensured to cool the machine room while the general dangerous rapid evacuation of slight leakage of the gas fuel is ensured; in the process of further executing the condition F209 for comparing the real-time fan speed value with the fan speed 2 set value, when the real-time data speed value of the fan speed regulator 206 is greater than 1800r/min fan speed 2 set value, and when the process F209 is compared and meets the condition that the real-time fan speed value is greater than the fan speed 2 set value, the process F209 is further executed and is compared with the condition F210 that whether the real-time machine room pressure value is smaller than 101kPa machine room atmospheric pressure low set value is met, and the real-time data management module 201 reads the atmospheric pressure value in the machine room monitored by the atmospheric pressure detector 205 in real time through the network bus 100, wherein the measuring range of the atmospheric pressure detector 205 in the embodiment of the invention is 0kPa to 120kPa; when the further execution comparison meets the condition that the real-time machine room atmospheric pressure value is smaller than 101kPa and the set condition F210 is met, and when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 is smaller than 101kPa and the comparison condition is met, executing the filter screen blockage instruction flow F211, and the real-time data management module 201 sends a filter screen blockage alarm instruction to the switching value module 101 through the network bus 100, at this time, the switching value output interface of the switching value module 101 outputs 1 signal, so that the alarm lamp and the alarm send out audible and visual alarm signals to remind an operator that the filter screen blockage of the machine room is dangerous; in the process of further executing the comparison of the real-time fan speed value and the fan speed 1 set value condition F203, when the real-time speed value of the fan speed regulator 206 is greater than 1600r/min fan speed 1 set value, the process F203 further executes the comparison of whether the real-time gas concentration value is greater than the 2-level gas leakage alarm set value condition F204, when the real-time gas concentration value monitored by the combustible gas detector 202 collected by the real-time data management module 201 is greater than 150ppm of the 2-level gas leakage alarm set value, the process F204 executes the fan maximum speed process F207, and the real-time data management module 201 sends a 2000r/min fan maximum speed operation set value instruction to the fan speed regulator 206 through the network bus 100, so that the fan reaches the maximum ventilation quantity, and the general danger of slight leakage of gas fuel is ensured to be timely dispersed; the process of executing the machine room safety control by the data management control module 201 when the gas fuel slight leakage general danger occurs is transmitted to the data display module 208 through the network bus 100 for graphical data display;
S05: the general risk of slight leakage of the exhaust gas is the risk of gas leakage which is not completely combusted in the running process of the gas engine in the box-type machine room, and the general risk of slight leakage of the exhaust gas is monitored by a special gas detector 203 arranged in the machine room, for example, the risk of slight cracking of a welding line of an exhaust pipeline of the engine caused by vibration or slight leakage of the exhaust gas caused by damage of a sealing gasket of a connecting flange; when the real-time exhaust gas concentration value monitored by the special gas detector 203 collected by the real-time data management module 201 is greater than the level 1 exhaust gas leakage alarm set value by 30ppm, the exhaust gas concentration value in the flow F201 is compared with the level 1 exhaust gas leakage alarm set value to judge that the exhaust gas is slightly leaked and generally dangerous, the flow F201 further executes a comparison condition F203 for comparing the real-time fan speed value with the fan speed 1 set value, the real-time data management module 201 reads the real-time speed value of the fan speed regulator 206 through the network bus 100 and compares the real-time speed value with the fan speed 1 set value 1600r/min set by a program, when the real-time speed value of the fan speed regulator 206 is smaller than the fan speed 1 set value 1600r/min, the flow F203 further executes a comparison condition F209 for comparing the real-time fan speed value with the fan speed 2 set value, when the real-time data speed value of the fan speed regulator 206 is smaller than the fan speed 2 set value 1800r/min, the flow F209 further executes a comparison condition F212 for comparing the real-time fan speed value with the fan speed 2, the real-time data management module 201 reads real-time temperature data in the machine room detected by the temperature sensor 204 through the network bus 100, when the real-time speed value detected by the temperature sensor 204 is smaller than the fan speed 1 set value 213, and a command is issued by the fan speed regulator 213 when the real-time data detected by the temperature sensor 204 is slightly leaked to the fan speed controller is greater than 40 r than the fan speed set value 213; as known in the art, the ventilation quantity can be increased by increasing the rotation speed of the fan to enable the air pressure in the machine room to be increased the same, and the embodiment of the invention enables the ventilation quantity in the machine room to be increased step by a step rotation speed increasing instruction to realize timely evacuation of slight leakage of waste gas, and the consequent pressure change of the machine room is controlled by the machine room pressure flow F214 in the real-time data flow F201 of the second link acquisition machine room; in the process of further executing the comparison condition F212 of the real-time machine room temperature value and the machine room temperature set value 2, when the real-time temperature data in the machine room detected by the temperature sensing detector 204 is larger than the machine room temperature set value 2 of 40 ℃, and the comparison meets the condition that the real-time machine room temperature value is larger than the machine room temperature set value 2, executing the fan maximum rotating speed flow F207, and the real-time data management module 201 sends a fan maximum rotating speed operation set value instruction of 2000r/min to the fan speed regulator 206 through the network bus 100, so that the fan reaches the maximum ventilation quantity, and the maximum ventilation quantity in the machine room is ensured to cool the machine room while the general danger of slight leakage of waste gas is ensured to be rapidly evacuated; in the process of further executing the comparison of the real-time fan speed value and the fan speed 2 set value condition F209, when the real-time data speed value of the fan speed regulator 206 is greater than 1800r/min fan speed 2 set value, the process F209 compares to satisfy the condition that the real-time fan speed value is greater than the fan speed 2 set value, the process F209 further executes the comparison of whether the real-time machine room pressure value is smaller than the machine room atmospheric pressure low set condition F210 of 101kPa, the real-time data management module 201 reads the machine room atmospheric pressure value monitored in real time by the atmospheric pressure detector 205 through the network bus 100, when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 is lower than 101kPa and satisfies the comparison condition, the filter screen blockage instruction process F211 is executed, the real-time data management module 201 sends a filter screen blockage alarm instruction to the switch quantity module 101 through the network bus 100, and at this time, the switch quantity output interface of the switch quantity module 101 outputs 1 signal, so that the alarm lamp and the alarm device send an audible and visual alarm signal to remind operators that the filter screen blockage danger of the machine room; in the process of further executing the comparison of the real-time fan speed value and the fan speed 1 set value condition F203, when the real-time speed value of the fan speed regulator 206 is greater than 1600r/min fan speed 1 set value, the process F203 further executes the comparison of whether the real-time exhaust gas concentration value is greater than the 1-level exhaust gas leakage alarm set value condition F206, when the real-time exhaust gas concentration value monitored by the special gas detector 203 collected by the real-time data management module 201 is greater than the 2-level exhaust gas leakage alarm set value 150ppm, the process F206 executes the fan maximum speed process F207, and the real-time data management module 201 sends a 2000r/min fan maximum speed operation set value instruction to the fan speed regulator 206 through the network bus 100, so that the fan reaches the maximum ventilation quantity and the general danger of slight exhaust gas leakage is ensured to be timely evacuated; the process of executing the machine room safety control by the data management control module 201 when the slight leakage of the waste gas generally occurs is transmitted to the data display module 208 through the network bus 100 for graphical data display;
S06: the real-time control of the temperature of the machine room realizes the adjustment of the ventilation quantity by controlling the rotation speed change of the fan speed regulator 206, and the air temperature in the machine room meets the operation requirement of the internal combustion gas generator set; for example, a filter screen of a ventilation opening of a box-type machine room gradually gets blocked along with the increase of time, at the moment, the fresh air quantity entering the machine room is reduced, and the radiant heat of an internal combustion gas generator set in the machine room cannot be circulated outside the box body, so that the temperature of the air in the machine room is gradually increased; when the real-time temperature value monitored by the temperature sensing detector 204 collected by the real-time data management module 201 is greater than the computer room temperature set value 1 at 35 ℃, the comparison condition F208 of the computer room temperature set value 1 is met, the process F208 further executes the comparison of the real-time fan rotating speed value and the fan rotating speed 2 set value condition F209, when the real-time data rotating speed value of the fan speed regulator 206 is less than the 1800r/min fan rotating speed 2 set value, the process F209 further executes the comparison condition F212 of the real-time computer room temperature value and the computer room temperature set value 2, the real-time data management module 201 reads real-time temperature data in the computer room detected by the temperature sensing detector 204 through the network bus 100, when the real-time temperature data in the computer room detected by the temperature sensing detector 204 is less than the computer room temperature set value 2 at 40 ℃, the process executes the step fan rotating speed raising process F213, and the real-time data management module 201 sends a step fan rotating speed raising command F213 to the fan speed regulator 206 through the network bus 100 to increase the ventilation quantity, so that the increased air quantity in the computer room achieves temperature control in the computer room; as known in the art, the ventilation quantity can be increased by increasing the rotation speed of the fan to enable the air pressure in the machine room to be increased the same, and the embodiment of the invention enables the ventilation quantity in the machine room to be increased step by a step rotation speed increasing instruction to realize timely evacuation of slight leakage of waste gas, and the consequent pressure change of the machine room is controlled by the machine room pressure flow F214 in the real-time data flow F201 of the second link acquisition machine room; in the process of further executing the comparison condition F212 of the real-time machine room temperature value and the machine room temperature set value in the process F201, when the rotating speed of the step-up fan fails to reduce the machine room temperature, in the process of further executing the comparison condition F212 of the real-time machine room temperature value and the machine room temperature set value 2, when the real-time temperature data in the machine room detected by the temperature sensing detector 204 is larger than the machine room temperature set value 2 at 40 ℃, and the condition that the real-time machine room temperature value is larger than the machine room temperature set value 2 is met by comparison, executing a fan maximum rotating speed process F207, and sending a 2000r/min fan maximum rotating speed operation set value instruction to the fan speed regulator 206 by the real-time data management module 201 through the network bus 100, so that the fan reaches the maximum ventilation quantity, and the maximum ventilation quantity in the machine room is ensured to reduce the temperature in the machine room; in the process of further executing the comparison of the real-time fan speed value and the fan speed 2 set value condition F209, when the real-time data speed value of the fan speed regulator 206 is greater than 1800r/min fan speed 2 set value, the process F209 compares to satisfy the condition that the real-time fan speed value is greater than the fan speed 2 set value, the process F209 further executes the comparison of whether the real-time machine room pressure value is smaller than the machine room atmospheric pressure low set condition F210 of 101kPa, the real-time data management module 201 reads the machine room atmospheric pressure value monitored in real time by the atmospheric pressure detector 205 through the network bus 100, when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 is lower than 101kPa and satisfies the comparison condition, the filter screen blockage instruction process F211 is executed, the real-time data management module 201 sends a filter screen blockage alarm instruction to the switch quantity module 101 through the network bus 100, and at this time, the switch quantity output interface of the switch quantity module 101 outputs 1 signal, so that the alarm lamp and the alarm device send an audible and visual alarm signal to remind operators that the filter screen blockage danger of the machine room; the data management control module 201 transmits the control process to the data display module 208 for graphical data display through the network bus 100;
S07: in any process of the gas fuel slight leakage general danger control process, the exhaust gas slight leakage general danger control process and the real-time control machine room temperature control process, the ventilation quantity of the machine room is increased by executing a step fan increasing rotating speed flow F213 or the maximum rotating speed flow F207 of the fan is executed to ensure that the fan reaches the maximum ventilation quantity, after the gas fuel slight leakage general danger evacuation is realized, after the exhaust gas slight leakage general danger evacuation is ensured, after the temperature reduction in the machine room is ensured, the fan speed regulator 206 operates at 1800r/min or 2000r/min, as is known in the technical field, the ventilation quantity can be increased by increasing the rotating speed of the fan to ensure that the air pressure in the machine room is the same, and the air pressure in the machine room is increased, so that the atmospheric pressure in the real-time control machine room is controlled by monitoring the atmospheric pressure value of the real-time machine room through the atmospheric pressure detector 205 installed in the machine room, so that the atmospheric pressure stability of the machine room meets the operation requirement of an internal combustion gas generator set; for example, when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 collected by the real-time data management module 201 is greater than 102kPa machine room atmospheric pressure setting 1, the fan speed regulator 206 operates at 1800r/min to enable the real-time machine room atmospheric pressure value to reach 106kPa, and when the real-time machine room atmospheric pressure value collected by the real-time data management module 201 is greater than 102kPa machine room atmospheric pressure setting 1, the process F201 further executes a process F215 for comparing the machine room atmospheric pressure value with the machine room atmospheric pressure setting 2, at this time, the real-time machine room atmospheric pressure value reaches 106kPa to meet a machine room atmospheric pressure setting 2 condition of greater than 105kPa, the process F215 further executes a process F216 for judging whether the step fan speed is being increased, and when the step fan speed is not being increased, the step fan speed reducing process F217 is executed, the real-time data management module 201 sends a step fan speed increasing instruction to the fan speed regulator 206 through the network bus 100 to reduce the fan speed and the ventilation quantity in the machine room, and then reduces the machine room atmospheric pressure value, thereby realizing the pressure reducing adjustment of the machine room; in the step fan speed increasing process F216, when it is determined that the step fan speed increasing process is being performed, it is indicated that the second link acquisition machine room real-time data process F201 further includes any one of the gas fuel slight leakage general risk control process, the exhaust gas slight leakage general risk control process, and the real-time control machine room temperature control process, and at this time, even if the real-time machine room atmospheric pressure value reaches 106kPa, the machine room atmospheric pressure setting 2 condition process F215 is greater than 105kPa, and the step fan speed decreasing process F217 is not performed by the process F216; in the process of executing the step fan speed reducing flow F217, the real-time data management module 201 sends a step fan speed reducing instruction to the fan speed regulator 206 through the network bus 100 to reduce the fan 207 speed and reduce the ventilation quantity in the machine room, for example, the real-time speed value of the fan speed regulator 206 is 1800r/min, the step fan speed reducing instruction sent by the real-time data management module 201 to the fan speed regulator 206 through the network bus 100 is to adjust the fan 207 speed to 1600r/min in 5 seconds, the fan 207 speed is reduced to 1400r/min in 5 seconds after 30 seconds, the machine room atmospheric pressure value is reduced to 104kPa along with the step fan speed reducing instruction, when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 collected by the real-time data management module 201 is less than 105kPa atmospheric pressure setting 2, the machine room atmospheric pressure value and 105kPa machine room atmospheric pressure setting 2 condition F215 are not met, further comparison and judgment is not performed, at this time, the fan speed regulator 206 speed is stabilized to 1400r/min, the machine room atmospheric pressure value is stabilized to 105kPa atmospheric pressure value, the machine room atmospheric pressure value is stabilized, the machine room atmospheric pressure is ensured to be stable, the machine room atmospheric pressure is required to be stable, and the air pressure of the internal combustion engine is provided to the machine room is stable; as is known in the art, when the output power is increased, the required air amount is smaller than the condition F214, when the output power is decreased, for example, the air amount required for combustion is balanced with the air amount provided by the fan 207 in the machine room in the steady operation process of the machine room atmospheric pressure value 105kPa, when the output power of the combustion gas generator set is increased, the air amount required for combustion is increased, thereby causing the reduction of the machine room atmospheric pressure value, when the real-time machine room pressure value monitored by the real-time data management module 201 is smaller than the machine room atmospheric pressure setting 1 of 102kPa, the real-time machine room atmospheric pressure value monitored by the real-time data management module 205 is smaller than the machine room atmospheric pressure setting 1, the process F201 further executes the comparison of the real-time fan speed value with the fan speed setting value F209, when the real-time data speed value of the fan speed regulator 206 is smaller than the set of 1800r/min fan speed 2, the process F209 further executes the comparison of the real-time temperature value with the machine room temperature setting value 2, when the real-time data management module 201 reads the real-time data of the machine room atmospheric pressure value monitored by the real-time data management module 205 and the real-time data management module is smaller than the set of the fan speed threshold value of the fan speed 2, for example, the real-time data is increased by the network speed controller 100 r/fan speed setting 213, when the real-time data of the speed is increased by the real-time data is increased by the speed control module 100, and the speed of the fan speed is set by the fan speed setting value of the speed 2, the step fan speed increasing instruction sent by the real-time data management module 201 to the fan speed regulator 206 through the network bus 100 is to adjust the fan 207 speed to increase to 1600r/min in 5 seconds, so that the machine room atmospheric pressure value is increased from less than 102kPa to 103kPa, when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 collected by the real-time data management module 201 is greater than the machine room atmospheric pressure setting 1, the machine room atmospheric pressure value is greater than the machine room atmospheric pressure setting 1 condition F214, the process does not further execute the step fan speed increasing process, at this moment, the fan speed regulator 206 speed is stabilized at 1600r/min, the machine room atmospheric pressure value is stabilized at 103kPa, the fan 207 provides a stable air quantity for the machine room, and the machine room atmospheric pressure is ensured to stably meet the operation requirement of the internal combustion gas generator set; when the comparison does not meet the condition that the atmospheric pressure value of the machine room is greater than 120kPa and the atmospheric pressure value of the machine room is set to be 1, the process F214 further executes a process of comparing the real-time fan rotating speed value with the fan rotating speed 2 set value, when the real-time data rotating speed value of the fan speed regulator 206 reaches 1800r/min fan rotating speed 2 set value and the comparison meets the condition that the real-time fan rotating speed value is greater than the fan rotating speed 2 set value, the process F209 further executes a process of comparing whether the atmospheric pressure value of the machine room is smaller than 101kPa and the condition F210 is met, when the atmospheric pressure value of the machine room monitored by the atmospheric pressure detector 205 is smaller than 101kPa and the comparison condition is met, the process F211 executes a filter screen blockage instruction, the real-time data management module 201 sends a filter screen blockage alarm instruction to the switch quantity module 101 through the network bus 100, and at the moment, the switch quantity output interface of the switch quantity module 101 outputs 1 signal, so that the alarm lamp and the alarm device send an audible and visual alarm signal to remind operators that the filter screen blockage danger occurs; the data management control module 201 transmits the control process to the data display module 208 for graphic data display through the network bus 100;
S08: in any control process of the gas fuel slight leakage general danger control process, the exhaust gas slight leakage general danger control process, the real-time control machine room temperature and the real-time control machine room atmospheric pressure, in the process of further executing the process of comparing the real-time fan rotating speed value with the fan rotating speed 2 set value F209, when the real-time data rotating speed value of the fan speed regulator 206 is more than 1800r/min fan rotating speed 2 set value, the process F209 compares to satisfy the condition that the real-time fan rotating speed value is more than the fan rotating speed 2 set value, the process F209 further executes the process of comparing whether the real-time machine room pressure value is less than the machine room atmospheric pressure low set value F210 of 101kPa or not, the real-time data management module 201 reads the machine room atmospheric pressure value monitored in real time by the atmospheric pressure detector 205 through the network bus 100, and executes the filter screen blocking instruction process F211 when the real-time machine room atmospheric pressure value monitored by the atmospheric pressure detector 205 is lower than 101kPa and satisfies the comparison condition, the real-time data management module 201 sends a filter screen blocking alarm instruction to the switch quantity module 101 through the network bus 100, and the switch quantity output interface of the switch quantity module 101 outputs 1 signal to alert that the filter screen blocking signal is dangerous to alert a machine room operator;
S09: the real-time data management module 201 of the embodiment of the invention adopts a MODBUS-RTU communication protocol, and collects real-time data of a machine room and a real-time control process of the switching value module 101 through the network bus 100, wherein the real-time data of the machine room comprises a gas concentration value, an exhaust gas concentration value, an air temperature value of the machine room, an atmospheric pressure value of the machine room and a fan rotating speed value, and the real-time control process state of the switching value module comprises a gas alarm state, a toxic gas alarm state, a temperature alarm state, a fan speed regulator running state, a fan maximum rotating speed control state, a forced fan stop control state and a forced cut-off gas control state in the machine room; the data display module 208 in the embodiment of the invention receives the data transmitted by the real-time data management module 201 through the network bus 100, so as to realize the real-time display of the graphic data of the box-type machine room safety control;
s10: according to the embodiment of the invention, the program reference setting value data is set through the data display module, so that the setting of the program reference setting value in the real-time data management module is completed; the program reference set value comprises a switching value gas serious leakage alarm set value, a 1-level gas leakage alarm set value, a 2-level gas leakage alarm set value, a switching value waste gas serious leakage alarm set value, a 1-level waste gas leakage alarm set value, a 2-level waste gas leakage alarm set value, a switching value machine room temperature overhigh alarm set value, a machine room temperature set value 1, a machine room temperature set value 2, a fan running state set value, a fan rotating speed 1 set value, a fan rotating speed 2 set value, a fan maximum ventilation quantity rotating speed set value, a machine room atmospheric pressure set 1, a machine room atmospheric pressure set 2 and a machine room atmospheric pressure low set; the on-off quantity gas serious leakage alarm set value, the 1-level gas leakage alarm set value and the 2-level gas leakage alarm set value are set according to the components of the combustible gas, and the invention solves the problem that the gas leakage in the existing box-type machine room is ignited by high-temperature air by reasonably setting the gas leakage alarm value, thereby ensuring the safety of the box-type machine room; the invention solves the problem of influence of exhaust gas leakage in the existing box-type machine room on the health of operators by reasonably setting the exhaust gas leakage alarm value according to the composition of engine exhaust gas, and ensures the safety of the box-type machine room; the invention ensures that proper temperature is maintained in the box-shaped body by reasonably setting the temperature value of the machine room according to the operation requirement of the gas engine, thereby avoiding influencing the normal operation of equipment due to the over-high gas temperature and ensuring that the air temperature in the box-shaped machine room meets the operation safety of the internal combustion engine; the fan running state setting value, the fan rotating speed 1 setting value, the fan rotating speed 2 setting value and the fan maximum ventilation quantity rotating speed setting value are set according to the rotating speed range of the fan speed regulator, the fan running state is accurately judged and controlled by reasonably setting the fan rotating speed value, the fan speed regulator rotating speed accurate step control and ventilation quantity accurate regulation are ensured by setting a reasonable rotating speed regulating function value, serious danger and slight danger in a machine room are timely eliminated, and the safety of a box-type machine room is ensured; the invention controls the pressure in the machine room by reasonably setting the atmospheric pressure value of the machine room, and timely discovers the risk of blocking a vent filter screen, thereby ensuring that the atmospheric pressure in the box-type machine room meets the operation requirement of the internal combustion gas generator set;
S11: further, when the switching value module 101 diagnoses a network connection fault with the data pipeline module 201, an alarm instruction is sent out through a switching value output interface, and when the switching value module 101, the fan speed regulator 206, the combustible gas detector 202, the special gas detector 203, the temperature sensing detector 204 and the atmospheric pressure detector 205 are connected with the fault through the network bus 100, the data display module 208 diagnoses the network connection fault with the real-time data management module 201, the fault condition is displayed through a graphic mode, so that an operator can find out the fault of a machine room safety control system in time; further, the first link switching value module 101 of the present invention utilizes the switching value signal to complete the serious danger control of the box-type machine room, and combines the real-time data management module 201 in the second link to timely eliminate the slight danger in the machine room through the network bus 100, accurately judge the blocking event of the vent filter screen, accurately judge the gas fuel leakage, the exhaust gas leakage and the blocking event of the vent filter screen, timely evacuate the flammable and explosive toxic gas, reliably send out the blocking alarm of the vent filter screen, and enhance the safety of the control of the box-type machine room.
Besides the method for completing the safety control of the machine room of the box-type four-stroke internal combustion gas generator set, the real-time data management module can be connected with a smoke detector and a fire system in the machine room through a network bus, so that the required safety control is further realized.
The foregoing is merely illustrative of the present invention, and the present invention is not limited to the specific embodiments, and any person skilled in the art can easily change or replace the specific embodiments within the scope of the present invention. The protection scope of the invention is therefore subject to the claims.
Claims (8)
1. A safety method for a gas generator set room, comprising:
classifying signals in a gas generator set machine room according to the risk level to form a first link with a higher risk level and a second link with a second highest risk level;
environmental information in a gas generator set machine room is collected, and then:
if the received alarm signal belongs to the first link, the safety of the gas generator set room is ensured by a gas shutoff mode;
if the received alarm signal belongs to the second link, adjusting the environment in the gas generator set room by adjusting a fan in the gas generator set room until the fault is eliminated;
If the second link cannot eliminate the fault by adjusting the environment in the gas generator set room, the alarm signal enters the first link, and the gas generator set room is protected by shutting off the gas;
the process of classifying the signals in the gas generator set machine room according to the dangerous grade is as follows:
classifying according to the types of signals in a machine room of the gas generator set, and setting a primary threshold and a secondary threshold for each type of signals;
when the value of any one signal M in the gas generator set room is between the primary threshold value and the secondary threshold value, the signal M is a signal with a dangerous level of next high;
when the value of any one signal M in the gas generator set room is higher than the second-level threshold, the signal M is a signal with higher risk level;
the first link includes:
a serious leakage alarm signal of gas fuel, an excessive temperature alarm signal of a machine room and a serious leakage alarm signal of waste gas;
if the serious leakage alarm signal of the gas fuel is received, further judging whether an alarm signal of the machine room temperature is received or not;
When the alarm signal of the machine room temperature is not received, adjusting the fan to the maximum rotation speed, and outputting a command of forcibly cutting off the fuel gas;
when an alarm signal of overhigh temperature of a machine room is received, and the fan outputs a command of forcibly cutting off fuel gas in an unoperated state;
if the serious leakage alarm signal of the waste gas is received, further judging whether an alarm signal of the machine room temperature is received or not;
when the alarm signal of the temperature of the machine room is not received, outputting a command of forcibly cutting off the fuel gas after the fan speed regulator reaches the maximum rotating speed to operate;
when an alarm signal of overhigh temperature of a machine room is received, and the fan outputs a command of forcibly cutting off fuel gas in an unoperated state;
if an alarm signal of overhigh temperature of the machine room is received, the running state of the fan is further judged:
outputting a command of forcibly cutting off the fuel gas when the fan is not in an operating state;
outputting a command for forcibly cutting off the fuel gas when the fan is in an operating state and the fan is in an unoperated state;
the second link includes:
the gas fuel slight leakage alarm signal, the waste gas slight leakage alarm signal, the vent filter screen blockage alarm signal, the machine room atmospheric pressure alarm signal and the machine room temperature alarm signal are obtained by comparing the real-time data with the program reference set value;
The program reference setting values include: a 1-level gas leakage alarm set value, a 2-level gas leakage alarm set value, a 1-level waste gas leakage alarm set value, a 2-level waste gas leakage alarm set value, a machine room temperature set value 1, a machine room temperature set value 2, a fan running state set value, a fan rotating speed 1 set value, a fan rotating speed 2 set value, a fan maximum ventilation quantity rotating speed set value, a machine room atmospheric pressure set 1, a machine room atmospheric pressure set 2 and a machine room atmospheric pressure low set;
the rotating speed of the fan is divided into a fan rotating speed 1 set value, a fan rotating speed 2 set value and a fan maximum ventilation quantity rotating speed set value;
when an alarm signal in the second link is received, the ventilation quantity is adjusted by adjusting the rotating speed of the fan, and the alarm signal in the second link is eliminated;
if the gas fuel slight leakage alarm signal is received, a step fan speed increasing instruction is sent to the fan when the following conditions are met, and the ventilation quantity of a machine room is increased;
the "conditions satisfied simultaneously" are: the real-time rotating speed value of the fan does not reach the maximum rotating speed and simultaneously receives a machine room temperature alarm signal;
when the temperature value in the machine room of the gas generator set continuously rises after receiving a machine room temperature alarm signal, the fan sends out a fan maximum rotating speed operation setting value instruction so that the fan reaches the maximum ventilation quantity;
When the temperature value in the gas generator set room continuously rises after receiving the room temperature alarm signal, and the fan runs to the maximum rotation speed, the temperature value in the gas generator set room is not reduced yet, and then a vent filter screen blockage alarm signal is sent;
when an alarm signal of slight leakage of waste gas is received, a step fan-increasing rotating speed instruction is sent to the fan when the following conditions are met, and the ventilation quantity of a machine room is increased;
the "conditions satisfied simultaneously" are:
the real-time rotating speed value of the fan is smaller than the set value of the rotating speed 2 of the fan, and the real-time temperature value in the machine room of the gas generator set is smaller than the set value of the temperature 2 of the machine room;
when the real-time temperature of the gas generator set machine room is greater than the condition that the temperature setting value of the machine room is 2, controlling the maximum rotating speed of the fan to operate;
when the real-time rotating speed value of the fan is larger than the set value of the rotating speed 2 of the fan, if the pressure value of the real-time machine room is smaller than the low setting condition of the atmospheric pressure of the machine room, a vent filter screen blockage alarm signal is sent out;
when the real-time rotating speed value of the fan is larger than the fan rotating speed 1 set value, if the real-time exhaust gas concentration value is larger than the level 1 exhaust gas leakage alarm set value, controlling the fan to run at the maximum rotating speed;
When the real-time machine room temperature value is larger than the machine room temperature set value 1, sending a step fan-increasing rotating speed instruction to the fan when the following conditions are met, and increasing the ventilation quantity of the machine room;
the "conditions satisfied simultaneously" are:
the real-time rotating speed value of the fan is smaller than the set value of the rotating speed 2 of the fan, and the temperature value of the real-time machine room is smaller than the set value 2 of the temperature of the machine room;
when the real-time machine room temperature value is greater than the machine room temperature set value 2, controlling the fan to reach the maximum rotating speed;
if the real-time rotating speed value of the fan is larger than the set value of the rotating speed 2 of the fan and the pressure value of the real-time machine room is smaller than the low atmospheric pressure setting condition of the machine room, a vent filter screen blockage alarm signal is sent;
when the real-time pressure value of the machine room is greater than the machine room atmospheric pressure setting 1, if the real-time machine room atmospheric pressure value is greater than the machine room atmospheric pressure setting 2;
if the fan is not in the rotating speed lifting process, sending a command for reducing the rotating speed of the fan, and realizing the pressure reduction adjustment of the atmospheric pressure of the machine room;
when the real-time machine room pressure value is smaller than the machine room atmospheric pressure setting 1, if the real-time rotating speed of the fan is smaller than the fan rotating speed 2 setting value and the real-time machine room temperature value is smaller than the machine room temperature setting value 2, the rotating speed of the fan is increased, the ventilation quantity of the machine room is increased, and the air pressure is increased;
When the real-time machine room pressure value is greater than the machine room atmospheric pressure setting 1, if the real-time rotating speed of the fan is greater than the fan rotating speed 2 setting condition and the real-time machine room pressure value is less than the machine room atmospheric pressure low setting condition, a filter screen blockage alarm signal is sent.
2. A safety device for a gas generator room based on the safety method for a gas generator room according to claim 1, comprising:
the sensor assembly is used for collecting environmental information in a gas generator set machine room;
the real-time data management module is used for collecting signals output by the sensor assembly, processing the received signals and outputting related instructions;
the switching value module is connected with the real-time data management module through a bus and is used for receiving the instruction output by the real-time data management module;
the fan speed regulator receives the instruction of the switching value module and controls the running state of the fan;
and the alarm assembly is used for receiving the instruction output by the switching value module and carrying out danger alarm.
3. A safety arrangement for a gas generator set room according to claim 2, characterized in that: the sensor assembly includes:
One or more of a combustible gas detector, a special gas detector, a temperature-sensing detector and an atmospheric pressure detector.
4. A safety arrangement for a gas generator set room according to claim 2, characterized in that: the alarm assembly comprises:
one or more of a fuel gas alarm, a toxic gas alarm and a temperature alarm.
5. The safety arrangement for a gas generator set room of claim 2, further comprising:
and the data display module is connected with the real-time data management module and is used for graphically displaying fault conditions.
6. A safety arrangement for a gas generator set room according to claim 2, characterized in that:
the real-time data management module is communicated with the switching value module through a network bus and is used for sending a filter screen blockage alarm instruction;
the output interface of the switching value module is connected with the alarm assembly and is used for sending out an audible and visual alarm signal to remind an operator of the occurrence of filter screen blockage danger.
7. A safety arrangement for a gas generator set room according to claim 2, characterized in that:
the real-time data management module is communicated with the fan speed regulator through a network bus and is used for sending a control signal from the real-time data management module to the fan speed regulator;
The fan speed regulator is used for regulating the rotating speed of the fan.
8. Use of a safety method for a gas generator set room according to claim 1 in a box-type four-stroke internal combustion gas generator set room.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840882A (en) * | 2012-09-04 | 2012-12-26 | 中国海洋石油总公司 | State monitoring and fault diagnosis system of gas turbine generating unit and use method of state monitoring and fault diagnosis system |
| CN202758465U (en) * | 2012-06-18 | 2013-02-27 | 江苏鸿派新能源发展有限公司 | Fuel leakage alarm protective device for biomass generating set |
| CN105020900A (en) * | 2015-06-29 | 2015-11-04 | 柳州蚊敌香业有限公司 | Automatically controlled gas water heater capable of monitoring concentration of CO and alarming |
| CN105157235A (en) * | 2015-06-29 | 2015-12-16 | 柳州蚊敌香业有限公司 | Gas-fired water heater capable of monitoring concentration of methane and giving alarm |
| KR20170127925A (en) * | 2016-05-13 | 2017-11-22 | 한국 전기안전공사 | Device for protection by shutting off the electric energy on the basis of the leakage of the combustible gas concentration |
-
2020
- 2020-08-28 CN CN202010885024.5A patent/CN112015127B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202758465U (en) * | 2012-06-18 | 2013-02-27 | 江苏鸿派新能源发展有限公司 | Fuel leakage alarm protective device for biomass generating set |
| CN102840882A (en) * | 2012-09-04 | 2012-12-26 | 中国海洋石油总公司 | State monitoring and fault diagnosis system of gas turbine generating unit and use method of state monitoring and fault diagnosis system |
| CN105020900A (en) * | 2015-06-29 | 2015-11-04 | 柳州蚊敌香业有限公司 | Automatically controlled gas water heater capable of monitoring concentration of CO and alarming |
| CN105157235A (en) * | 2015-06-29 | 2015-12-16 | 柳州蚊敌香业有限公司 | Gas-fired water heater capable of monitoring concentration of methane and giving alarm |
| KR20170127925A (en) * | 2016-05-13 | 2017-11-22 | 한국 전기안전공사 | Device for protection by shutting off the electric energy on the basis of the leakage of the combustible gas concentration |
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