CN111623481A - Intelligent induced ventilation control method and system - Google Patents
Intelligent induced ventilation control method and system Download PDFInfo
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- CN111623481A CN111623481A CN202010334443.XA CN202010334443A CN111623481A CN 111623481 A CN111623481 A CN 111623481A CN 202010334443 A CN202010334443 A CN 202010334443A CN 111623481 A CN111623481 A CN 111623481A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 62
- 231100000719 pollutant Toxicity 0.000 claims abstract description 62
- 230000006698 induction Effects 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 235000018553 tannin Nutrition 0.000 claims description 3
- 229920001864 tannin Polymers 0.000 claims description 3
- 239000001648 tannin Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 4
- 238000007865 diluting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/50—Load
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Ventilation (AREA)
Abstract
The invention provides an intelligent induced ventilation control method and a control system, wherein a control center centrally controls a plurality of centralized controllers and carries out data addressing on each centralized controller; monitoring starting and operating data conditions by a plurality of sensor data, transmitting a detection result to a control center, determining starting and operating states of the induction fan equipment, and determining operating starting conditions of the induction fan equipment by a pollutant sensor; comparing the return signals of the sensors in the integrated controller by the control center, and determining the operation of the induced draught fan equipment in a plurality of air exchange areas in the space area; as above, the characteristic that the total amount of the induced ventilation system occupies a low proportion of the whole space is utilized, and the induced air inlets are utilized to discharge the harmful substances and the ambient mixed air to the outside through the fan equipment and the negative pressure system pressure principle, or the concentration of the harmful substances in the area where the harmful substances are located is reduced through the fan equipment and the positive pressure system pressure principle, so that the concentration of the harmful substances in the whole area is reduced to a specified range.
Description
Technical Field
The invention relates to the field of electromechanical control, in particular to an intelligent induced ventilation control method and an intelligent induced ventilation control system.
Background
The central air conditioner is generally used in places such as hotels, supermarkets, underground parking garages, laboratories, factory buildings and the like, and indoor gas is discharged in an induced manner through a ventilation system of the central air conditioner. The specific time, location and amount of the discharged gas can not be known in the process of using the induced ventilation system. Therefore, the conventional induced ventilation system is controlled to be switched on and off by the experience of a manager. For an underground garage, the pollution substances of automobile exhaust have the characteristics of discontinuity, obvious peak load and the like, so that the advantages of the existing induced ventilation system are not well reflected, and the main reasons are as follows: the induction ventilation system has an efficient ventilation mode, and how to accurately reduce the starting time period of the system without influencing the ventilation effect makes the system save more electric energy than the traditional ventilation mode, which is difficult to realize by management personnel through experience; the induction ventilation system has the characteristic of uniform distribution points, can quickly dilute more concentrated automobile exhaust, does not need to start all ventilation equipment for discharging partial pollutants, but the existing induction ventilation system cannot effectively and accurately track the generation of pollutants and flexibly and automatically control the start of individual fans; so that only a continuous opening method can be adopted to ensure the ventilation effect. However, the main pollutant to be treated in the underground garage is automobile exhaust, the concentration of harmful substances at local points where the automobile exhaust occurs is higher than the allowable value of relevant departments, but the average concentration of the harmful substances in the whole garage space is very low. Therefore, the continuous opening of the induced ventilation system is used for discharging the automobile exhaust gas to continuously perform comprehensive ventilation, which obviously causes great energy waste and mechanical equipment abrasion.
Disclosure of Invention
The embodiment of the invention is realized by the following steps:
the control center centrally controls the plurality of centralized controllers and addresses data of each centralized controller;
respectively detecting the starting and running states of the induced fan equipment by using temperature, current, voltage and pressure sensors, wherein the monitoring contents comprise the starting and running temperatures, the current, the voltage and the pressure state of the fan equipment, transmitting the detection result to a control center through an integrated controller, determining the starting and running states of the induced fan equipment, and switching on or switching off an electromagnetic contactor switch on the induced fan equipment through a process controller;
detecting the concentration of pollutants in the current ventilation area by a single-machine pollutant sensor, and determining the operation starting condition of the current induced fan equipment;
comparing return signals of the pollutant sensors in the multiple integrated controllers by the control center, and determining the operation of the induced fan equipment in the multiple air exchange areas in the space area;
and determining the operation of the exhaust fan according to the return signal.
In some embodiments of the present invention, the temperature sensor detects a real-time temperature state of the induction fan device, and if the start temperature is too high during starting, the centralized controller starts the induction fan device in a delayed manner; if the working temperature is too high, the control center closes all the induction fan devices in work, and the control center enters the control state again after the temperature is recovered to be normal.
The current sensor detects the starting current and the working voltage of the induced fan equipment, and if the starting current is too high or the instantaneous current is too high during working during starting, the short circuit of the fan equipment is judged, the power supply of the fan equipment is cut off, and the fan operation is stopped and the maintenance is reported;
the voltage sensor detects starting voltage and working voltage when the fan equipment is started, if the starting voltage is insufficient and the fan equipment cannot be started, power supply of the fan equipment is cut off, it is judged that the starting load of the fan equipment is too large or the fan fails, and if the working voltage is insufficient, the over-frequency controller adjusts power consumption of the fan equipment.
In some embodiments of the invention, the stand-alone contaminant sensor determines that the current induction fan unit start-up condition is that the detected contaminant concentration is less than 30 ppm.
In some embodiments of the present invention, when the pollutant sensor in any one of the ventilation zones detects a pollutant concentration higher than 80ppm, the centralized controller outputs a feedback signal to determine the operation of the induced fan devices in the plurality of ventilation zones in the spatial region, the control center starts the induced fan devices in the ventilation zones adjacent to the induced fan devices to jointly start for pollutant concentration dilution, and shortens the detection time interval of the pollutant sensor in the started ventilation zone to perform uninterrupted monitoring in the region.
In some embodiments of the present invention, when the pollutant sensor in any one of the ventilation zones detects that the pollutant concentration is higher than 80ppm and cannot be reduced to below 30ppm within the delayed working time, the exhaust fan is started, all the induction fan devices in the ventilation zones in the zone are started to have urgent need and the action of the tannin blowing and diluting is started, and when the pollutant concentration is reduced to below 30ppm, the operation of all the induction fan devices and the exhaust fan is stopped after a time delay of 600 s.
In other embodiments of the present invention, the intelligent induced draft control system includes a plurality of induced draft fan devices, a plurality of program controllers, a plurality of electromagnetic contactors, a plurality of centralized controllers, a transformer, and a frequency regulator; the induction fan equipment comprises an induction air port and fan equipment, and independent pollutant sensors are arranged on the induction air port; the program controller and the electromagnetic contactor are respectively connected with the integrated controller, the transformer is connected with the mains supply power supply module, and the intelligent induced ventilation control system provides a power supply; the induction fan equipment, the program controller, the electromagnetic contactor and the integrated controller are matched in quantity; and the plurality of centralized controllers are all connected to the control center.
In other embodiments of the present invention, the frequency adjustor is connected between the electromagnetic contactor and the induced fan device to provide variable frequency control for the induced fan device according to the need of the control system, and the signal input port of the frequency adjustor is connected to the program controller to provide variable frequency signals thereof.
In other embodiments of the present invention, the program controller includes two sets of input/output ports, one set of the input/output ports is respectively connected to the input/output ports of the sensing probe of the pollutant sensor, the output ports of the other set of the input/output ports are connected to the input ports of the electromagnetic contactor, and the number of the program controller is the same as the number of the induction fan devices.
In other embodiments of the present invention, three incoming contacts of a main contact of the electromagnetic contactor are connected to an output end of a transformer, three outgoing contacts are connected to an input power connector of the frequency regulator, an output port of the frequency regulator is connected to the fan device and serves as a variable frequency control switch of the induced fan device, and an auxiliary contact of the electromagnetic contactor is connected to an output port of the program controller.
In other embodiments of the present invention, the induced draft fan device is provided with temperature, voltage, current and pressure sensors, the temperature, voltage, current and pressure sensors are respectively connected to the centralized controller, the temperature sensor is arranged on a casing of the induced draft fan device, the current and voltage sensor is arranged at a power supply inlet end of the induced draft fan device, the pressure sensor is arranged on the induced draft fan device, when the induced draft fan device is abnormal in starting temperature, voltage, current or stress, an abnormal signal is transmitted to the centralized controller, the centralized controller cuts off all power supplies of the induced draft fan device in operation, and after a delay of 600 seconds, the induced draft fan device repeatedly enters the control mode.
The embodiment of the invention at least has the following advantages or beneficial effects:
1. the proportion of the total amount of the induced fan equipment in the whole space is low, so that the space utilization rate of the whole space can be improved;
2. the induction fan equipment near the harmful gas generation area can be used for stirring and mixing the harmful substances and air around the harmful substances, so that the concentration of the harmful substances in the area where the harmful substances are located is quickly reduced, and the concentration of the harmful gases in the whole area is lower than the allowable value specified by related departments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of an intelligent induced draft control method according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an intelligent induced draft control system according to an embodiment of the present invention.
Fig. 3 is a schematic view of a practical application of the garage according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
An intelligent induced ventilation control method, as shown in fig. 1, includes the following steps:
the control center centrally controls the plurality of centralized controllers and addresses data of each centralized controller;
respectively detecting the starting and running states of the induced fan equipment by using temperature, current, voltage and pressure sensors, wherein the monitoring contents comprise the starting and running temperatures, the current, the voltage and the pressure state of the fan equipment, transmitting the detection result to a control center through an integrated controller, determining the starting and running states of the induced fan equipment, and switching on or switching off an electromagnetic contactor switch on the induced fan equipment through a process controller;
detecting the concentration of pollutants in the current ventilation area by a single-machine pollutant sensor, and determining the operation starting condition of the current induced fan equipment;
comparing return signals of the pollutant sensors in the multiple integrated controllers by the control center, and determining the operation of the induced fan equipment in the multiple air exchange areas in the space area;
and determining the operation of the exhaust fan according to the return signal.
In some embodiments of the present invention, the temperature sensor detects a real-time temperature state of the induction fan device, and if the start temperature is too high during starting, the centralized controller starts the induction fan device in a delayed manner; if the working temperature is too high, the control center closes all the induction fan devices in work, and the control center enters the control state again after the temperature is recovered to be normal.
The current sensor detects the starting current and the working voltage of the induced fan equipment, and if the starting current is too high or the instantaneous current is too high during working during starting, the short circuit of the fan equipment is judged, the power supply of the fan equipment is cut off, and the fan operation is stopped and the maintenance is reported;
the voltage sensor detects starting voltage and working voltage when the fan equipment is started, if the starting voltage is insufficient, the fan equipment cannot be started, power supply of the fan equipment is cut off, the starting load of the fan equipment is judged to be too large, or the fan breaks down, and if the working voltage is insufficient, the power consumption of the fan equipment is adjusted by the over-frequency controller.
In some embodiments of the invention, the stand-alone contaminant sensor determines that the current induction fan unit start-up condition is that the detected contaminant concentration is less than 30 ppm.
In some embodiments of the present invention, when the pollutant sensor in any one of the ventilation zones detects a pollutant concentration higher than 80ppm, the centralized controller outputs a feedback signal to determine the operation of the induced fan devices in the plurality of ventilation zones in the spatial region, the control center starts the induced fan devices in the ventilation zones adjacent to the induced fan devices to jointly start for pollutant concentration dilution, and shortens the detection time interval of the pollutant sensor in the started ventilation zone to perform uninterrupted monitoring in the region.
In some embodiments of the present invention, when the pollutant sensor in any one of the ventilation zones detects that the pollutant concentration is higher than 80ppm and cannot be reduced to below 30ppm within the delayed working time, the exhaust fan is started, all the induction fan devices in the ventilation zones in the zone are started to have urgent need and the action of the tannin blowing and diluting is started, and when the pollutant concentration is reduced to below 30ppm, the operation of all the induction fan devices and the exhaust fan is stopped after a time delay of 600 s.
In other embodiments of the present invention, as shown in fig. 2, the intelligent induced draft control system includes a plurality of induced draft fan devices, a plurality of program controllers, a plurality of electromagnetic contactors, a plurality of centralized controllers, a transformer, and a frequency regulator; the induction fan equipment comprises an induction air port and fan equipment, and independent pollutant sensors are arranged on the induction air port; the program controller and the electromagnetic contactor are respectively connected with the integrated controller, the transformer is connected with the mains supply power supply module, and the intelligent induced ventilation control system provides a power supply; the induction fan equipment, the program controller, the electromagnetic contactor and the integrated controller are matched in quantity; and the plurality of centralized controllers are all connected to the control center.
In other embodiments of the present invention, the frequency adjustor is connected between the electromagnetic contactor and the induced fan device to provide variable frequency control for the induced fan device according to the need of the control system, and the signal input port of the frequency adjustor is connected to the program controller to provide variable frequency signals thereof.
In other embodiments of the present invention, the program controller includes two sets of input/output ports, one set of the input/output ports is respectively connected to the input/output ports of the sensing probe of the pollutant sensor, the output ports of the other set of the input/output ports are connected to the input ports of the electromagnetic contactor, and the number of the program controller is the same as the number of the induction fan devices.
In other embodiments of the present invention, three incoming contacts of a main contact of the electromagnetic contactor are connected to an output end of a transformer, three outgoing contacts are connected to an input power connector of the frequency regulator, an output port of the frequency regulator is connected to the fan device and serves as a variable frequency control switch of the induced fan device, and an auxiliary contact of the electromagnetic contactor is connected to an output port of the program controller.
In other embodiments of the present invention, the induced draft fan device is provided with temperature, voltage, current and pressure sensors, the temperature, voltage, current and pressure sensors are respectively connected to the centralized controller, the temperature sensor is arranged on a casing of the induced draft fan device, the current and voltage sensor is arranged at a power supply inlet end of the induced draft fan device, the pressure sensor is arranged on the induced draft fan device, when the induced draft fan device is abnormal in starting temperature, voltage, current or stress, an abnormal signal is transmitted to the centralized controller, the centralized controller cuts off all power supplies of the induced draft fan device in operation, and after a delay of 600 seconds, the induced draft fan device repeatedly enters the control mode.
Specifically, taking an actual garage as an example, as shown in fig. 3, in conjunction with the contents of fig. 2 and fig. 1:
in the garage, the maximum allowable concentration of pollutants in the garage is set according to different use conditions, and the time delay working time for reducing the concentration of the pollutants to be below a set value is adjusted by a ventilation fan.
A smoke exhaust fan 4 and an exhaust fan 5 are arranged in a machine room of the underground parking garage, a certain number of inducing fan devices 2 are arranged at the parking place of the car and on a path through which natural wind 6 passes through a ramp, and elements such as a pollutant texture receptor 10, a program controller 7, an electromagnetic contactor 8, a transformer 9 and the like are arranged in a case of the inducing fan 2 and are integrated into the inducing fan devices.
The input and output ends of the program controller 7 are respectively connected with the input and output ends of an induction probe of the pollutant sensor 10, the other group of signal output ends are connected with the input end of the electromagnetic contactor 8, the power supply inlet of the program controller 7 is connected with the transformer 9, the input end of the transformer 9 is connected with a 220V power supply, the two output ends of the electromagnetic contactor 8 are connected with the power supply input end of the induction fan device 2, and the power supply inlet is connected with the 220V power supply. Wherein the program controller 7 can provide various control modes such as manual mode, automatic mode, timing mode, combined operation mode, etc
In the using process, firstly, a starting value of the pollutant concentration induction fan device 2 is set, when the pollutant reaches a set value, the induction fan device 2 is started, the induction fan device 2 blows away and dilutes the pollutant, and when the pollutant concentration falls below the set value, the induction fan device is closed after a period of time delay; if the pollutant concentration sensed by the induction fan device 2 does not fall back to the set value for inducing the fan device 2 to be closed within a certain time period, the induction fan device 2 transmits a signal to the centralized controller 3 of the induction fan device 2 system through a network cable; the centralized controller 3 transmits signals to the program controllers 7 of all the induced fan devices 2 by using the network cables penetrating through all the induced fan devices 2, the program controllers 7 start the induced fan devices 2 to blow pollutants to the centralized exhaust port 12, the centralized controller 3 starts the exhaust fan 5 by using a group of signal cables to exhaust the pollutants at the exhaust port outdoors, and all the induced fan devices 2 and the exhaust fan 5 are closed after running for a certain time.
The induction fan device 2 is automatically switched on and off through the pollutant texture receiver 10 and the program controller 7. When the pollutant concentration sensed by any one induction fan device 2 exceeds a set value (the maximum allowable pollutant concentration in the garage is 80ppm), the induction fan device 2 is started to blow away pollutants, so that the pollutants are lower than the set value (the allowable pollutant concentration is 30ppm), and at this time, the induction fan devices 2 and the air exhaust fans 5 at other positions do not work.
When the pollutant concentration sensed by any one induction fan device 2 exceeds a set value (80ppm), the induction fan device 2 is started, but the pollutant concentration cannot be reduced below the set value (30ppm) within a certain period, which indicates that the pollutant concentration in the whole ventilation space is high and the effect of continuously blowing away and diluting the pollutants cannot be realized; at this time, the whole ventilation and exhaust system starts to work, and stops working after the concentration of pollutants drops below a set value (30ppm) for 600 seconds.
The temperature sensor 14 is additionally arranged at the air inlet end of the induction fan device, when the temperature exceeds the standard or suddenly rises, the temperature sensor 14 transmits a signal to the centralized controller 3, the centralized controller 3 cuts off the power supply of all the running induction fan devices, and the self-control state is carried out after the time delay of 10 min.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intelligent induced ventilation control method is characterized by comprising the following steps:
the control center centrally controls the plurality of centralized controllers and addresses data of each centralized controller;
respectively detecting the starting and running states of the induced fan equipment by using temperature, current, voltage and pressure sensors, wherein the monitoring contents comprise the starting and running temperatures, the current, the voltage and the pressure state of the fan equipment, transmitting the detection result to a control center through an integrated controller, determining the starting and running states of the induced fan equipment, and switching on or switching off an electromagnetic contactor switch on the induced fan equipment through a process controller;
detecting the concentration of pollutants in the current ventilation area by a single-machine pollutant sensor, and determining the operation starting condition of the current induced fan equipment;
comparing return signals of the pollutant sensors in the multiple integrated controllers by the control center, and determining the operation of the induced fan equipment in the multiple air exchange areas in the space area;
and determining the operation of the exhaust fan according to the return signal.
2. The intelligent induced ventilation control method according to claim 1, wherein the temperature sensor detects a real-time temperature state of the induced fan device, and the induced fan device is started in a delayed manner by the centralized controller if the starting temperature is too high during starting; if the working temperature is too high, the control center closes all the induction fan devices in work, and the control center enters the control state again after the temperature is recovered to be normal.
The current sensor detects the starting current and the working voltage of the induced fan equipment, and if the starting current is too high or the instantaneous current is too high during working during starting, the short circuit of the fan equipment is judged, the power supply of the fan equipment is cut off, and the fan operation is stopped and the maintenance is reported;
the voltage sensor detects starting voltage and working voltage when the fan equipment is started, if the starting voltage is insufficient, the fan equipment cannot be started, power supply of the fan equipment is cut off, the starting load of the fan equipment is judged to be too large, or the fan breaks down, and if the working voltage is insufficient, the power consumption of the fan equipment is adjusted by the over-frequency controller.
3. The intelligent induced draft control method of claim 1, wherein said stand-alone contaminant sensor determines a start-up condition of the current induction fan unit as a detected contaminant concentration of less than 30 ppm.
4. The intelligent induced ventilation control method according to claim 1, wherein when the pollutant sensor in any one of the ventilation zones detects a pollutant concentration higher than 80ppm, the centralized controller outputs a return signal to determine the operation of the induced fan devices in the plurality of ventilation zones in the spatial region, the control center starts the induced fan devices in the ventilation zones adjacent to the induced fan devices to start jointly for pollutant concentration dilution, and shortens the detection time interval of the pollutant sensor in the started ventilation zone to perform uninterrupted monitoring in the spatial region.
5. The intelligent induced ventilation control method according to claim 1, wherein when the pollutant sensor in any one of the ventilation zones detects that the pollutant concentration is higher than 80ppm and cannot be reduced to below 30ppm within the delayed working time, the exhaust fan is started, the induced fan devices in all the ventilation zones in the area are started to have the urgent need and the action of the tannin blowing and dilution, and when the pollutant concentration is reduced to below 30ppm, the operation of all the induced fan devices and the exhaust fan is stopped after the time delay of 600 s.
6. An intelligent induced ventilation control system is characterized by comprising a plurality of induced fan devices, a plurality of program controllers, a plurality of electromagnetic contactors, a plurality of centralized controllers, a transformer and a frequency regulator; the induction fan equipment comprises an induction air port and fan equipment, and independent pollutant sensors are arranged on the induction air port; the program controller and the electromagnetic contactor are respectively connected with the integrated controller, the transformer is connected with the mains supply power supply module, and the intelligent induced ventilation control system provides a power supply; the induction fan equipment, the program controller, the electromagnetic contactor and the integrated controller are matched in quantity; and the plurality of centralized controllers are all connected to the control center.
7. The intelligent induced draft control system according to claim 6, wherein the frequency regulator is connected between the electromagnetic contactor and the induced draft fan device to provide variable frequency control for the induced draft fan device according to the requirements of the control system, and a signal input port of the frequency regulator is connected to the program controller to provide variable frequency signals thereof.
8. The system according to claim 6, wherein the program controller comprises two sets of input/output ports, one set of input/output ports is respectively connected to the input/output ports of the induction probe of the pollutant sensor, the output ports of the other set of input/output ports are connected to the input ports of the electromagnetic contactors, and the number of the program controller is the same as the number of the induction fan devices.
9. The intelligent induced ventilation control system according to claim 6, wherein three main contacts of the electromagnetic contactor are connected to an output end of a transformer, three outgoing contacts are connected to an input power connector of the frequency regulator, an output port of the frequency regulator is connected to the fan device and serves as a variable frequency control switch of the induced fan device, and an auxiliary contact of the electromagnetic contactor is connected to an output port of the program controller.
10. The system according to claim 6, wherein the induced draft control system comprises temperature, voltage, current and pressure sensors arranged on the induced draft fan device, the temperature, voltage, current and pressure sensors are respectively connected to the centralized controller, the temperature sensors are arranged on a casing of the induced draft fan device, the current and voltage sensors are arranged at a power supply inlet end of the induced draft fan device, and the pressure sensors are arranged on the induced draft fan device, when the starting temperature, voltage, current or stress of the induced draft fan device is abnormal, an abnormal signal is transmitted to the centralized controller, the centralized controller cuts off all power supplies of the induced draft fan device in operation, and the induced draft control system repeatedly enters the control mode after the time delay of 600 seconds.
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Address after: No.1, 1st floor, building 18, 169 Haichang Road, Wan'an Town, Tianfu New District, Chengdu, Sichuan 610000 Applicant after: Sichuan Huixiang Engineering Management Co.,Ltd. Address before: No.1, 1st floor, building 18, No.169 Haichang Road, Wan'an Town, Tianfu New District, Chengdu, Sichuan 610213 China (Sichuan) pilot Free Trade Zone, Chengdu Applicant before: Sichuan Huixiang Intelligent Engineering Co.,Ltd. |
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Application publication date: 20200904 |