CN116379363A - Remote valve closing device for gas leakage alarm - Google Patents
Remote valve closing device for gas leakage alarm Download PDFInfo
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- CN116379363A CN116379363A CN202310378855.7A CN202310378855A CN116379363A CN 116379363 A CN116379363 A CN 116379363A CN 202310378855 A CN202310378855 A CN 202310378855A CN 116379363 A CN116379363 A CN 116379363A
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- 238000007405 data analysis Methods 0.000 claims abstract description 82
- 238000012937 correction Methods 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims description 251
- 239000002737 fuel gas Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 230000010365 information processing Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000005374 Poisoning Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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Abstract
The invention relates to a gas leakage alarm remote valve closing device, in particular to the technical field of gas safety, which comprises a gas alarm for detecting information of gas and a gas pipeline; the base station is used for uploading the information to the data center; the data center is used for receiving the detected gas information; the data acquisition module is used for acquiring the concentration value of CO, the pressure value of the gas pipeline and the valve opening and closing state; the data operation module is used for calculating an excessively small pressure difference value between the pressure value and the minimum pressure standard, calculating an excessively large pressure difference value between the pressure value and the maximum pressure standard, and calculating a ratio of the excessively large pressure difference value to a pressure difference value threshold; the data alarm module is used for determining the concentration level of CO and the state of the gas pipeline, the data analysis module is used for judging whether to correct the minimum pressure standard, the correction mode of the minimum pressure standard is selected, whether to adjust the medium flow is judged, and the adjustment mode of the medium flow is selected, so that the safety performance is improved.
Description
Technical Field
The invention relates to the technical field of gas safety, in particular to a gas leakage alarm remote valve closing device.
Background
The development and application of various energy sources are important problems related to national life in the current society, and with the gradual development of the gas energy source supply and use in China, the gas energy source supply and use brings convenience and rapidness to the life of people. Today, most buildings in each major city are also paved with gas pipelines, and gas is one of the indispensable energy sources in daily life and operation of people. However, the gas brings convenience and rapidness to the life of people, and meanwhile, certain potential safety hazards exist, and due to the inflammable and explosive characteristics, once leakage occurs, the gas is very dangerous, especially in a relatively closed gas environment, the gas cannot be found and measures are taken timely, and the gas can cause serious accidents such as ignition, explosion, choking death and the like.
Chinese patent publication No.: CN112963598A discloses a self-closing valve with gas leakage alarm cutting-off function, the invention comprises a valve body and an electromagnetic valve matched with the valve body, wherein a gas film, a first gas inlet, a sealing component, a handle component and a reset fixing plate are arranged in the valve body, a first magnet, a solenoid, a magnetic conduction plate and a magnetic conduction block are arranged in the electromagnetic valve, the magnetic conduction block is magnetically attracted with the upper end of the handle component, a movable component is magnetically attracted with the lower end of the handle component, a first reset spring is sleeved with the lower end of the handle component, the lower end of the movable component is arranged on the gas film, a tilt driving rod magnetically attracted with the movable component is arranged at the lower end of the gas film, the reset fixing plate magnetically attracts with the top of the tilt driving rod, and the tilt part of the tilt driving rod drives the sealing component to open/close the first gas inlet.
Therefore, the problem of low safety performance caused by inaccurate monitoring of the gas pipeline exists in the prior art.
Disclosure of Invention
Therefore, the invention provides a remote valve closing device for gas leakage alarm, which is used for solving the problem of lower safety performance caused by the fact that a gas pipeline is not accurately monitored in the prior art.
In order to achieve the above object, the present invention provides a gas leakage alarm remote valve closing device, comprising:
the gas alarm is used for detecting the information of the gas and the gas pipeline and transmitting the information to the base station;
the base station is used for uploading the information to the data center;
the data center is used for receiving the detected gas information and transmitting the gas information to the gas detection alarm information processing platform;
the data acquisition module is connected with the gas alarm and used for acquiring the concentration value of CO, the pressure value of the gas pipeline and the valve opening and closing state of the gas pipeline;
the data operation module is connected with the data acquisition module and is used for calculating an excessively small pressure difference value of the pressure value of the gas pipeline and a minimum pressure standard allowed to be borne by the gas pipeline, calculating an excessively large pressure difference value of the pressure value of the gas pipeline and a maximum pressure standard allowed to be borne by the gas pipeline, and calculating a ratio of the excessively large pressure difference value to a pressure difference value threshold;
the data alarm module is connected with the data acquisition module and is used for determining the concentration level of the CO according to the comparison result of the concentration value and the concentration standard, determining the state of the gas pipeline according to the comparison result of the pressure value of the gas pipeline and the minimum pressure standard and the maximum pressure standard which are allowed to be carried by the gas pipeline,
the data analysis module is respectively connected with the data operation module and the data alarm module and is used for judging whether to correct the minimum pressure standard according to the opening and closing state of the valve, determining to select a correction mode of the minimum pressure standard according to the comparison result of the excessively small pressure difference value and the preset excessively small pressure difference value, judging whether to adjust the medium flow of the gas pipeline according to the comparison result of the excessively large pressure difference value and the pressure difference value threshold value, and determining to select an adjustment mode of adjusting the medium flow of the gas pipeline according to the comparison result of the ratio value and the preset ratio value.
Further, the data acquisition module acquires the concentration value of the detected CO, the data alarm module compares the concentration value with a concentration standard, determines the concentration level of the CO according to the comparison result,
if the concentration value of the CO is at the first concentration level, the data alarm module judges that the fuel gas is not leaked;
if the concentration value of the CO is at the second concentration level, the data alarm module judges that the fuel gas leaks and controls to close a valve of the fuel gas pipeline;
the concentration value of the CO is required to be smaller than a concentration standard by the first concentration level, and the concentration value of the CO is required to be larger than or equal to the concentration standard by the second concentration level.
Further, the data acquisition module acquires the pressure value of the gas pipeline in the first concentration state, the pressure value corresponds to the minimum pressure standard and the maximum pressure standard which the gas pipeline is allowed to bear,
if the pressure value of the gas pipeline is in a first pressure state, the data alarm module judges that the gas pipeline is in an under-pressure state;
if the pressure value of the gas pipeline is in the second pressure state, the data alarm module judges that the gas pipeline is in a normal state;
if the pressure value of the gas pipeline is in a third pressure state, the data alarm module judges that the gas pipeline is in an overpressure state;
the first pressure state is required to meet the pressure value of the gas pipeline to be smaller than or equal to the minimum pressure standard, the second pressure state is required to meet the pressure value of the gas pipeline to be larger than the minimum pressure standard and smaller than or equal to the maximum pressure standard, and the third pressure state is required to meet the pressure value of the gas pipeline to be larger than the maximum pressure standard.
Further, the data acquisition module acquires the open-closed state of the valve of the gas pipeline in a first pressure state to determine whether to correct the minimum pressure standard,
if the valve of the gas pipeline is in an open state, the data analysis module judges that the minimum pressure standard is corrected;
and if the valve of the gas pipeline is in a closed state, the data analysis module judges that the minimum pressure standard is not corrected.
Further, when the valve of the gas pipeline is in an open state, a correction mode for the minimum pressure standard is arranged in the data analysis module, wherein,
the first correction mode is that the data analysis module corrects the minimum pressure standard to a first increased pressure standard;
the second correction mode is that the data analysis module corrects the minimum pressure standard to a second increased pressure standard;
the third correction mode is that the data analysis module corrects the minimum pressure standard to a third increased pressure standard;
wherein the minimum pressure criterion < the first increased pressure criterion < the second increased pressure criterion < the third increased pressure criterion.
Further, the data operation module calculates an excessively small pressure difference value between the pressure value of the gas pipeline and a minimum pressure standard allowed to be borne by the gas pipeline, and the data analysis module determines a correction mode for the minimum pressure standard according to the excessively small pressure difference value, wherein,
if the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline is smaller than or equal to a first preset excessively small pressure difference value, the data analysis module determines to select the first correction mode;
if the pressure value of the gas pipeline and the excessively small pressure difference value of the minimum pressure standard allowed to be borne by the gas pipeline are larger than the first preset excessively small pressure difference value and smaller than or equal to the second preset excessively small pressure difference value, the data analysis module determines to select the second correction mode;
and if the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline is larger than a second preset pressure difference value, the data analysis module determines to select the third correction mode.
Further, the data operation module calculates an excessive pressure difference value between the pressure value of the gas pipeline and the maximum pressure standard allowed to be carried by the gas pipeline, the data analysis module compares the excessive pressure difference value with a pressure difference value threshold value, judges whether to regulate the medium flow of the gas pipeline according to the comparison result,
if the pressure value of the gas pipeline is at a first pressure level, the data analysis module adjusts the medium flow of the gas pipeline;
if the pressure value of the gas pipeline is at the second pressure level, the data analysis module does not adjust the medium flow of the gas pipeline;
the first pressure level is required to meet the pressure value of the gas pipeline and the excessive pressure difference value of the maximum pressure standard allowed to be borne by the gas pipeline is smaller than or equal to a pressure difference value threshold, and the second pressure level is required to meet the pressure value of the gas pipeline and the excessive pressure difference value of the maximum pressure standard allowed to be borne by the gas pipeline is larger than the pressure difference value threshold.
Further, the data analysis module is provided with a regulation means for regulating the medium flow of the gas conduit at a first pressure level, wherein,
the first adjusting mode is that the data analysis module adjusts the initial medium flow to a first increased medium flow;
the second adjusting mode is that the data analysis module adjusts the initial medium flow to a second increased medium flow;
the third adjusting mode is that the data analysis module adjusts the initial medium flow to a third increased medium flow;
wherein the initial medium flow < the first increased medium flow < the second increased medium flow < the third increased medium flow.
Further, the data operation module calculates the ratio of the excessive pressure difference value to the pressure difference value threshold value, the data analysis module determines an adjusting mode for adjusting the medium flow of the gas pipeline according to the comparison result of the ratio and a preset ratio, wherein,
if the ratio is smaller than or equal to a first preset ratio, the data analysis module determines to select the first adjustment mode;
if the ratio is larger than the first preset ratio and smaller than or equal to the second preset ratio, the data analysis module determines to select the second adjustment mode;
and if the ratio is larger than a second preset ratio, the data analysis module determines to select the third adjusting mode.
Further, the gas detection alarm information processing platform also comprises a base layer, a data layer, a service supporting layer, an application system layer, a user layer and a communication interface for data integration and interaction.
Compared with the prior art, the method has the beneficial effects that the detected indoor concentration value of CO is obtained, the concentration value is compared with the concentration standard, whether the gas is leaked or not is judged according to the comparison result, when the concentration level is at the second level, namely the concentration value of CO is more than or equal to the concentration standard, the gas is judged to be leaked, and the valve of the gas pipeline is controlled to be closed, so that the safety performance is further improved through accurate monitoring of the concentration of the gas.
Further, by acquiring the pressure value of the gas pipeline and comparing the pressure value with the minimum pressure standard and the maximum pressure standard which are allowed to be borne by the gas pipeline, the gas pipeline is judged to be in a normal state or an under-pressure state or an over-pressure state according to the comparison result, and whether the valve of the gas pipeline is closed is further judged, so that the safety performance is further improved.
Further, when the gas pipeline is judged to be in a first pressure state, namely an under-pressure state, the data acquisition module acquires the opening and closing state of the valve of the gas pipeline, when the valve is in a closed state, the reserved pressure is indicated to be enough to close the valve, and when the valve is in an open state, the reserved pressure is indicated to be insufficient to support the valve to conduct closing action, and then the reserved pressure is required to be corrected, so that the safety performance is further improved.
Furthermore, the invention determines to select a correction mode for the minimum pressure standard by calculating the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline, and by increasing the minimum pressure standard, the reserved pressure is enough to support the valve to be closed in the undervoltage state, thereby further improving the safety performance.
Further, when the gas pipeline is overpressured, whether the excessive pressure difference value between the pressure value of the gas pipeline and the maximum pressure standard allowed to be borne by the gas pipeline exceeds a pressure difference value threshold value is determined, if the excessive pressure difference value does not exceed the pressure difference value threshold value, the influence is indicated to be remedied by adjusting the flow and then the pressure value in a controllable range, if the excessive pressure difference value threshold value is exceeded, the valve of the gas pipeline is immediately closed, and the warning is carried out on management personnel and users, so that the safety performance is further improved.
Drawings
FIG. 1 is a block diagram of a gas leakage alarm remote valve closing device according to the present invention;
FIG. 2 is a block diagram of a remote gas leakage alarm valve closing device according to the present invention;
FIG. 3 is a block diagram of a gas detection alarm information processing platform of the gas leakage alarm remote valve closing device.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1-3, fig. 1 is a block diagram of a gas leakage alarm device of a gas leakage alarm remote valve closing device according to the present invention; FIG. 2 is a block diagram of a remote gas leakage alarm valve closing device according to the present invention; FIG. 3 is a block diagram of a gas detection alarm information processing platform of the gas leakage alarm remote valve closing device.
The embodiment of the invention provides a remote valve closing device for gas leakage alarm, which comprises the following components:
the gas alarm is used for detecting the information of the gas and the gas pipeline and transmitting the information to the base station;
the base station is used for uploading the information to the data center;
the data center is used for receiving the detected gas information and transmitting the gas information to the gas detection alarm information processing platform;
the data acquisition module is connected with the gas alarm and used for acquiring the concentration value of CO, the pressure value of the gas pipeline and the valve opening and closing state of the gas pipeline;
the data operation module is connected with the data acquisition module and is used for calculating an excessively small pressure difference value of the pressure value of the gas pipeline and a minimum pressure standard allowed to be borne by the gas pipeline, calculating an excessively large pressure difference value of the pressure value of the gas pipeline and a maximum pressure standard allowed to be borne by the gas pipeline, and calculating a ratio of the excessively large pressure difference value to a pressure difference value threshold;
the data alarm module is connected with the data acquisition module and is used for determining the concentration level of the CO according to the comparison result of the concentration value and the concentration standard, determining the state of the gas pipeline according to the comparison result of the pressure value of the gas pipeline and the minimum pressure standard and the maximum pressure standard which are allowed to be carried by the gas pipeline,
the data analysis module is respectively connected with the data operation module and the data alarm module and is used for judging whether to correct the minimum pressure standard according to the opening and closing state of the valve, determining to select a correction mode of the minimum pressure standard according to the comparison result of the excessively small pressure difference value and the preset excessively small pressure difference value, judging whether to adjust the medium flow of the gas pipeline according to the comparison result of the excessively large pressure difference value and the pressure difference value threshold value, and determining to select an adjustment mode of adjusting the medium flow of the gas pipeline according to the comparison result of the ratio value and the preset ratio value.
In particular, the data acquisition module acquires the concentration value of the detected CO, the data alarm module compares the concentration value with a concentration standard, determines the concentration level of the CO according to the comparison result,
if the concentration value of the CO is at the first concentration level, the data alarm module judges that the fuel gas is not leaked;
if the concentration value of the CO is at the second concentration level, the data alarm module judges that the fuel gas leaks and controls to close a valve of the fuel gas pipeline;
the concentration value of the CO is required to be smaller than a concentration standard by the first concentration level, and the concentration value of the CO is required to be larger than or equal to the concentration standard by the second concentration level.
In the embodiment of the present invention, when the concentration value of CO is 800ppm in a room, an environment at risk of poisoning is formed, so 800ppm is an important limit value for normal people, and the concentration standard in the embodiment is 800ppm.
In particular, the data acquisition module acquires the pressure value of the gas pipeline in a first concentration state, wherein the pressure value corresponds to the minimum pressure standard and the maximum pressure standard which the gas pipeline is allowed to bear,
if the pressure value of the gas pipeline is in a first pressure state, the data alarm module judges that the gas pipeline is in an under-pressure state;
if the pressure value of the gas pipeline is in the second pressure state, the data alarm module judges that the gas pipeline is in a normal state;
if the pressure value of the gas pipeline is in a third pressure state, the data alarm module judges that the gas pipeline is in an overpressure state;
the first pressure state is required to meet the pressure value of the gas pipeline to be smaller than or equal to the minimum pressure standard, the second pressure state is required to meet the pressure value of the gas pipeline to be larger than the minimum pressure standard and smaller than or equal to the maximum pressure standard, and the third pressure state is required to meet the pressure value of the gas pipeline to be larger than the maximum pressure standard.
In the embodiment of the invention, the pressure standard allowed to be carried by the gas pipeline in the low-pressure gas pipeline is smaller than 0.01Mpa, the pressure standard allowed to be carried by the gas pipeline in the medium-pressure gas pipeline is larger than 0.2Mpa and smaller than or equal to 1.6Mpa, the pressure standard allowed to be carried by the gas pipeline in the secondary high-pressure gas pipeline is larger than 0.8Mpa and smaller than or equal to 1.6Mpa, and the pressure standard allowed to be carried by the gas pipeline in the high-pressure gas pipeline is larger than 2.5Mpa and smaller than or equal to 4.0Mpa.
In particular, the data acquisition module acquires the open and closed states of the valve of the gas pipeline in a first pressure state to determine whether to correct the minimum pressure standard,
if the valve of the gas pipeline is in an open state, the data analysis module judges that the minimum pressure standard is corrected;
and if the valve of the gas pipeline is in a closed state, the data analysis module judges that the minimum pressure standard is not corrected.
In the embodiment of the invention, when the gas pipeline is in an under-voltage state, the condition that the voltage of the battery in the meter is insufficient is indicated, and under the condition that the voltage of the gas meter is insufficient, the valve cannot be closed due to insufficient power supply, so that the data analysis module is provided with the minimum pressure standard, and a certain pressure is reserved for closing the valve when the voltage is reduced to the set minimum pressure standard.
Specifically, when the valve of the gas pipeline is in an open state, a correction mode for the minimum pressure standard is arranged in the data analysis module, wherein,
the first correction mode is that the data analysis module corrects the minimum pressure standard to a first increased pressure standard;
the second correction mode is that the data analysis module corrects the minimum pressure standard to a second increased pressure standard;
the third correction mode is that the data analysis module corrects the minimum pressure standard to a third increased pressure standard;
wherein the minimum pressure criterion < the first increased pressure criterion < the second increased pressure criterion < the third increased pressure criterion.
Specifically, the data operation module calculates an excessively small pressure difference value between the pressure value of the gas pipeline and a minimum pressure standard allowed to be borne by the gas pipeline, and the data analysis module determines a correction mode for the minimum pressure standard according to the excessively small pressure difference value, wherein,
if the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline is smaller than or equal to a first preset excessively small pressure difference value, the data analysis module determines to select the first correction mode;
if the pressure value of the gas pipeline and the excessively small pressure difference value of the minimum pressure standard allowed to be borne by the gas pipeline are larger than the first preset excessively small pressure difference value and smaller than or equal to the second preset excessively small pressure difference value, the data analysis module determines to select the second correction mode;
and if the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline is larger than a second preset pressure difference value, the data analysis module determines to select the third correction mode.
The invention provides a preferred embodiment for correcting the minimum pressure standard allowed to be carried by the gas pipeline, and the specific embodiment is as follows:
a first correction coefficient X1, a second correction coefficient X2 and a third correction coefficient X3 are preset in the data analysis module, 1 is more than X1 and less than X2 and less than X3 is more than 1.2, a first preset excessively small pressure difference value delta P1 and a second preset excessively small pressure difference value delta P2 are also arranged in the data analysis module, delta P1 is less than delta P2, when the valve of the gas pipeline is in an open state, the data analysis module sets delta P=Pmin-P according to the excessively small pressure difference value delta P of the pressure value P of the gas pipeline and the minimum pressure standard Pmin allowed to be borne by the gas pipeline, the data analysis module respectively compares the difference value delta P with delta P1 and delta P2 to determine the selected correction mode,
if Δp is less than or equal to Δp1, the data analysis module selects the first correction mode, specifically, selects a first correction coefficient X1 to correct the minimum pressure standard W0 allowed to be carried by the gas pipeline to a first increased pressure standard W1, and sets w1=w0×x1;
if Δp1 is smaller than Δp and smaller than or equal to Δp2, the data analysis module selects the second correction mode, specifically selects the second correction mode X2 to correct the minimum pressure standard W0 allowed to be carried by the gas pipeline to the second increased pressure standard W2, and sets w2=w0×x2;
if Δp > Δp2, the data analysis module selects a third correction mode, specifically, selects the third correction mode X3 to correct the minimum pressure standard W0 allowed to be carried by the gas pipeline to a third increased pressure standard W3, and sets w3=w0×x3;
W0＜W1＜W2＜W3。
in this embodiment, X1 < 1.05 < X2 < 1.1 < X3 < 1.2 is set, in this embodiment, x3=1.15, x2=1.08, x1=1.03 is preferred, the pressure value of the gas pipe in this embodiment is 0.6MPa, the minimum pressure standard that the gas pipe is allowed to carry is 0.5MPa,0.05MPa < Δp1 < 0.1MPa < Δp2 < 0.15MPa, and Δp1=0.07 MPa, Δp2=0.13 MPa is preferred in this embodiment.
Specifically, the data operation module calculates an excessive pressure difference value between the pressure value of the gas pipeline and the maximum pressure standard allowed to be carried by the gas pipeline, the data analysis module compares the excessive pressure difference value with a pressure difference value threshold value, judges whether to regulate the medium flow of the gas pipeline according to the comparison result,
if the pressure value of the gas pipeline is at a first pressure level, the data analysis module adjusts the medium flow of the gas pipeline;
if the pressure value of the gas pipeline is at the second pressure level, the data analysis module does not adjust the medium flow of the gas pipeline;
the first pressure level is required to meet the pressure value of the gas pipeline and the excessive pressure difference value of the maximum pressure standard allowed to be borne by the gas pipeline is smaller than or equal to a pressure difference value threshold, and the second pressure level is required to meet the pressure value of the gas pipeline and the excessive pressure difference value of the maximum pressure standard allowed to be borne by the gas pipeline is larger than the pressure difference value threshold.
In the embodiment of the invention, when the gas pipeline is overpressured, whether the excessive pressure difference value between the pressure value of the gas pipeline and the maximum pressure standard allowed to be borne by the gas pipeline exceeds a pressure difference value threshold is determined, if the excessive pressure difference value does not exceed the pressure difference value threshold, the influence can be remedied by adjusting the flow and then the pressure value in a controllable range, if the excessive pressure difference value threshold is exceeded, the valve of the gas pipeline is immediately closed, and the management personnel and the users are warned.
In particular, the data analysis module is provided with a regulation means for regulating the medium flow of the gas line at a first pressure level, wherein,
the first adjusting mode is that the data analysis module adjusts the initial medium flow to a first increased medium flow;
the second adjusting mode is that the data analysis module adjusts the initial medium flow to a second increased medium flow;
the third adjusting mode is that the data analysis module adjusts the initial medium flow to a third increased medium flow;
wherein the initial medium flow < the first increased medium flow < the second increased medium flow < the third increased medium flow.
Specifically, the data operation module calculates the ratio of the excessive pressure difference value to the pressure difference value threshold value, the data analysis module determines an adjusting mode for adjusting the medium flow of the gas pipeline according to the comparison result of the ratio and a preset ratio, wherein,
if the ratio is smaller than or equal to a first preset ratio, the data analysis module determines to select the first adjustment mode;
if the ratio is larger than the first preset ratio and smaller than or equal to the second preset ratio, the data analysis module determines to select the second adjustment mode;
and if the ratio is larger than a second preset ratio, the data analysis module determines to select the third adjusting mode.
The invention provides a preferable embodiment of an adjusting mode for adjusting the medium flow of the gas pipeline, which comprises the following specific embodiments:
a first regulating coefficient K1, a second regulating coefficient K2 and a third regulating coefficient K3 are preset in the data analysis module, K1 is more than 1 and K2 is more than 2 and K3 is more than 1.2, a first preset ratio C1 and a second preset ratio C2 are also arranged in the data analysis module, C1 is more than 2, the data analysis module calculates the ratio C of the excessive pressure difference Pmax and the pressure difference threshold Py at a first pressure level, C=Pmax/P is set, the data analysis module compares the ratio C with C1 and C2 respectively to determine the selected regulating mode,
if C is less than or equal to C1, the data analysis module selects the first adjustment mode, specifically selects a first adjustment coefficient K1 to adjust the initial medium flow U0 of the gas pipeline to a first increased medium flow U1, and sets u1=u0×k1;
if C1 is greater than C and less than or equal to C2, the data analysis module selects the second adjustment mode, specifically selects the second adjustment mode K2, and adjusts the initial medium flow U0 of the gas pipeline to a second increased medium flow U2, and sets u2=u0×k2;
if C > C2, the data analysis module selects the third adjustment mode, specifically selects a third adjustment mode K3 to adjust the initial medium flow U0 of the gas pipeline to a third increased medium flow U3, and sets u3=u0×k3;
U0＜U1＜U2＜U3。
in this embodiment, 1 < K1 < 1.05 < K2 < 1.1 < K3 < 1.2, where k3=1.15, k2=1.08, k1=1.03 are preferred, and the initial medium flow rate of the gas pipeline is 15m/s,0.85 < C1 < 0.9 < C2 < 1, where c1=0.87, and c2=0.95 are preferred.
Specifically, the gas detection alarm information processing platform also comprises a base layer, a data layer, a service supporting layer, an application system layer, a user layer and a communication interface for data integration and interaction.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A gas leak alarm remote valve closing apparatus, comprising:
the gas alarm is used for detecting the information of the gas and the gas pipeline and transmitting the information to the base station;
the base station is used for uploading the information to the data center;
the data center is used for receiving the detected gas information and transmitting the gas information to the gas detection alarm information processing platform;
the data acquisition module is connected with the gas alarm and used for acquiring the concentration value of CO, the pressure value of the gas pipeline and the valve opening and closing state of the gas pipeline;
the data operation module is connected with the data acquisition module and is used for calculating an excessively small pressure difference value of the pressure value of the gas pipeline and a minimum pressure standard allowed to be borne by the gas pipeline, calculating an excessively large pressure difference value of the pressure value of the gas pipeline and a maximum pressure standard allowed to be borne by the gas pipeline, and calculating a ratio of the excessively large pressure difference value to a pressure difference value threshold;
the data alarm module is connected with the data acquisition module and is used for determining the concentration level of the CO according to the comparison result of the concentration value and the concentration standard, determining the state of the gas pipeline according to the comparison result of the pressure value of the gas pipeline and the minimum pressure standard and the maximum pressure standard which are allowed to be carried by the gas pipeline,
the data analysis module is respectively connected with the data operation module and the data alarm module and is used for judging whether to correct the minimum pressure standard according to the opening and closing state of the valve, determining to select a correction mode of the minimum pressure standard according to the comparison result of the excessively small pressure difference value and the preset excessively small pressure difference value, judging whether to adjust the medium flow of the gas pipeline according to the comparison result of the excessively large pressure difference value and the pressure difference value threshold value, and determining to select an adjustment mode of adjusting the medium flow of the gas pipeline according to the comparison result of the ratio value and the preset ratio value.
2. The gas leakage alarm remote valve closing device according to claim 1, wherein the data acquisition module acquires a concentration value of the detected CO, the data alarm module compares the concentration value with a concentration standard, determines a concentration level of the CO according to the comparison result,
if the concentration value of the CO is at the first concentration level, the data alarm module judges that the fuel gas is not leaked;
if the concentration value of the CO is at the second concentration level, the data alarm module judges that the fuel gas leaks and controls to close a valve of the fuel gas pipeline;
the concentration value of the CO is required to be smaller than a concentration standard by the first concentration level, and the concentration value of the CO is required to be larger than or equal to the concentration standard by the second concentration level.
3. The gas leakage alarm remote valve closing device according to claim 2, wherein the data acquisition module acquires a pressure value of the gas pipeline in a first concentration state, the pressure value corresponding to a minimum pressure standard and a maximum pressure standard which the gas pipeline is allowed to bear,
if the pressure value of the gas pipeline is in a first pressure state, the data alarm module judges that the gas pipeline is in an under-pressure state;
if the pressure value of the gas pipeline is in the second pressure state, the data alarm module judges that the gas pipeline is in a normal state;
if the pressure value of the gas pipeline is in a third pressure state, the data alarm module judges that the gas pipeline is in an overpressure state;
the first pressure state is required to meet the pressure value of the gas pipeline to be smaller than or equal to the minimum pressure standard, the second pressure state is required to meet the pressure value of the gas pipeline to be larger than the minimum pressure standard and smaller than or equal to the maximum pressure standard, and the third pressure state is required to meet the pressure value of the gas pipeline to be larger than the maximum pressure standard.
4. The gas leakage alarm remote valve closing apparatus according to claim 3, wherein said data acquisition module acquires an open/close state of a valve of said gas pipe in a first pressure state to determine whether to correct said minimum pressure criterion,
if the valve of the gas pipeline is in an open state, the data analysis module judges that the minimum pressure standard is corrected;
and if the valve of the gas pipeline is in a closed state, the data analysis module judges that the minimum pressure standard is not corrected.
5. The gas leakage alarm remote valve closing apparatus according to claim 4, wherein a correction means for a minimum pressure standard is provided in the data analysis module when the valve of the gas pipe is in an open state, wherein,
the first correction mode is that the data analysis module corrects the minimum pressure standard to a first increased pressure standard;
the second correction mode is that the data analysis module corrects the minimum pressure standard to a second increased pressure standard;
the third correction mode is that the data analysis module corrects the minimum pressure standard to a third increased pressure standard;
wherein the minimum pressure criterion < the first increased pressure criterion < the second increased pressure criterion < the third increased pressure criterion.
6. The gas leakage alarm remote valve closing device according to claim 5, wherein the data operation module calculates an excessively small pressure difference between the pressure value of the gas pipeline and a minimum pressure standard allowed to be carried by the gas pipeline, and the data analysis module determines a correction mode for the minimum pressure standard according to the excessively small pressure difference, wherein,
if the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline is smaller than or equal to a first preset excessively small pressure difference value, the data analysis module determines to select the first correction mode;
if the pressure value of the gas pipeline and the excessively small pressure difference value of the minimum pressure standard allowed to be borne by the gas pipeline are larger than the first preset excessively small pressure difference value and smaller than or equal to the second preset excessively small pressure difference value, the data analysis module determines to select the second correction mode;
and if the pressure difference value between the pressure value of the gas pipeline and the minimum pressure standard allowed to be borne by the gas pipeline is larger than a second preset pressure difference value, the data analysis module determines to select the third correction mode.
7. The gas leakage alarm remote valve closing device according to claim 6, wherein the data operation module calculates an excessive pressure difference value between a pressure value of the gas pipeline and a maximum pressure standard allowed to be carried by the gas pipeline, the data analysis module compares the excessive pressure difference value with a pressure difference value threshold value, determines whether to adjust the medium flow of the gas pipeline according to the comparison result,
if the pressure value of the gas pipeline is at a first pressure level, the data analysis module adjusts the medium flow of the gas pipeline;
if the pressure value of the gas pipeline is at the second pressure level, the data analysis module does not adjust the medium flow of the gas pipeline;
the first pressure level is required to meet the pressure value of the gas pipeline and the excessive pressure difference value of the maximum pressure standard allowed to be borne by the gas pipeline is smaller than or equal to a pressure difference value threshold, and the second pressure level is required to meet the pressure value of the gas pipeline and the excessive pressure difference value of the maximum pressure standard allowed to be borne by the gas pipeline is larger than the pressure difference value threshold.
8. The gas leak alarm remote valve apparatus of claim 7, wherein the data analysis module is provided with a means of adjustment for adjusting the flow of medium to the gas conduit at a first pressure level, wherein,
the first adjusting mode is that the data analysis module adjusts the initial medium flow to a first increased medium flow;
the second adjusting mode is that the data analysis module adjusts the initial medium flow to a second increased medium flow;
the third adjusting mode is that the data analysis module adjusts the initial medium flow to a third increased medium flow;
wherein the initial medium flow < the first increased medium flow < the second increased medium flow < the third increased medium flow.
9. The gas leakage alarm remote valve closing device according to claim 8, wherein the data operation module calculates a ratio of the excessive pressure difference value to a pressure difference value threshold value, the data analysis module determines an adjustment manner for adjusting the medium flow of the gas pipeline according to a comparison result of the ratio and a preset ratio, wherein,
if the ratio is smaller than or equal to a first preset ratio, the data analysis module determines to select the first adjustment mode;
if the ratio is larger than the first preset ratio and smaller than or equal to the second preset ratio, the data analysis module determines to select the second adjustment mode;
and if the ratio is larger than a second preset ratio, the data analysis module determines to select the third adjusting mode.
10. The gas leakage alarm remote valve closing device according to claim 1, wherein the gas detection alarm information processing platform further comprises a base layer, a data layer, a service support layer, an application system layer, a user layer and a communication interface for data integration and interaction.
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