CN116518302A - Flameout linkage control circuit and flameout linkage electric control valve - Google Patents
Flameout linkage control circuit and flameout linkage electric control valve Download PDFInfo
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- CN116518302A CN116518302A CN202210104941.4A CN202210104941A CN116518302A CN 116518302 A CN116518302 A CN 116518302A CN 202210104941 A CN202210104941 A CN 202210104941A CN 116518302 A CN116518302 A CN 116518302A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 37
- 238000004891 communication Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 667
- 239000002737 fuel gas Substances 0.000 description 30
- 238000002485 combustion reaction Methods 0.000 description 23
- 230000000007 visual effect Effects 0.000 description 16
- 238000010411 cooking Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000009423 ventilation Methods 0.000 description 12
- 230000005672 electromagnetic field Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 238000005070 sampling Methods 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 235000021168 barbecue Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 235000014347 soups Nutrition 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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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
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The flameout interlocking control circuit is used for connecting the flameout interlocking control valve with the interlocking control valve on an associated gas pipe in series, monitoring residual pressure change when the gas pipe is closed by using a gas pressure sensor, and an intelligent gas pipe interlocking safety system for monitoring and preventing leakage of the gas pipe and the gas valve is formed by the flameout interlocking control circuit and an intelligent programming controller. An electric control gas valve and a power switch are arranged in the flameout linkage electric control valve, and a burner flame detector is used for controlling the flameout linkage electric control valve to switch. The flameout linkage control circuit and the flameout linkage electric control valve prevent leakage of the gas pipeline system from the pipe valve root.
Description
Technical Field
The invention relates to a flameout linkage control circuit and a flameout linkage electric control valve of a gas pipeline system, wherein the flameout linkage electric control valve is arranged on burner equipment of the gas pipeline system, and the linkage electric control valve is arranged on a gas pipeline.
Background
The existing household and commercial gas pipelines are all burners which are used for regulating the pressure of gas to a certain pressure range through pressure regulating equipment and then are conveyed to an application end through conveying pipelines, and the gas at the application end is conveyed to the gas equipment through a main pipe, a branch pipe gas pipeline and a gas valve. The household application end is mostly connected with a gas stove through a mounted gas valve, a hose, a corrugated pipe or the like, and the gas equipment application end mainly uses a gas valve and an operating valve to control gas. And when the work is finished, the equipment operation valve and the gas pipe valve are sequentially closed to prevent gas leakage. The large and small gas pipeline systems form a tree-shaped connecting pipe network, each section of pipeline is controlled to be opened and closed through a gas valve, and the mutually related pipelines are only connected with a gas circulation function, so that gas leakage cannot be mutually restricted. In order to prevent accidents caused by gas leakage, a thermocouple flameout protection device is arranged in the gas burner, and a gas alarm is also arranged in the gas burner to prevent accidents caused by gas leakage. However, existing protection devices have disadvantages. The gas pipe of the user terminal is damaged by external forces such as thermal expansion, cold contraction, collision, corrosion, aging, rat bite fracture and the like in long-time use, or forgets to close, and is not tightly closed, so that unexpected accidents such as explosion, fire and poisoning are easily caused by gas leakage of the pipeline. The gas alarm has prompt function of alarming in time, but belongs to remedial measures after gas leakage, and does not have a preventive function of preventing gas leakage. The gas alarm can be forgotten to be started, the starting does not play a function role, and the gas alarm cannot play a role in preventing gas leakage accidents due to improper installation position or arrangement. The installation position of the gas alarm and the gas leakage position are generally at a certain distance, the gas density is smaller than the air density, when the gas is emitted to a certain concentration to reach the installation position of the gas alarm, and the gas in the air is detected, the alarm can be given out, at the moment, the gas has the conditions of combustion and explosion, and the explosion can happen only by igniting the gas through open flame. The existing household burner is provided with a solenoid valve for protecting flameout of a thermocouple. The thermocouple is arranged at the position close to the flame of the burner, the high-temperature flame of the burner enables the thermocouple to generate electromotive force, thermoelectric current can be generated in the loop to drive the gas electromagnetic valve to open the gas pipe, ignition combustion is guaranteed, and the thermoelectric current generated by the thermocouple keeps the gas electromagnetic valve open. When the fire source is extinguished or the burner is accidentally extinguished, the temperature is rapidly reduced, the temperature control thermocouple stops generating thermoelectric current, the gas electromagnetic valve for flameout protection is disconnected, and the gas of the burner is cut off. Other burners on the same branch still keep the combustion state of gas supply of the gas pipe, and can not play a role in protecting the pipeline in front of the burner and the adjacent gas pipe from gas leakage.
Disclosure of Invention
In order to achieve the purpose of gas leakage caused by accidents such as gas pipe and valve breakage, untight valve closing, midway flameout and the like, the gas leakage must be eliminated from the gas pipe and the gas valve, and multiple protection such as gas leakage alarm and the like is matched with monitoring, so that the gas leakage is prevented, and the safety is ensured. In order to eliminate gas leakage and implement intelligent control from the root of all gas pipes and gas valves through which gas passes, the invention aims to provide an intelligent gas linkage safety system which forms a gas pipeline system by utilizing a flameout linkage electric control valve, a linkage electric control valve, an intelligent programming controller and a connecting circuit on the basis of the original gas pipe and gas valve protection measures, so that gas leakage is prevented, gas leakage can be monitored, gas leakage is eliminated from the root, and gas leakage caused by artificial misoperation or pipe valve damage is prevented, thereby playing a role in protecting gas leakage.
On a relatively independent gas pipeline system, such as a workshop and a public kitchen, each burner is provided with a flameout linkage electric control valve, a gas main pipe, a main pipe and a branch pipe are all provided with linkage electric control valves for automatically closing the gas pipe at the joint of the gas pipe, the flameout linkage electric control valves are connected with the linkage electric control valves through flameout linkage control circuits, and the flameout linkage electric control valves are used for controlling the linkage electric control valves on the gas pipe. When a burner is in an ignition combustion state, the power supply circuit of the flameout linkage electric control valve of the burner is powered on, the power supply circuit of the linkage electric control valve on the gas branch pipe connected in series with the power supply circuit of the flameout linkage electric control valve of the burner is powered on, the linkage electric control valve on the gas branch pipe is kept in an open state, the power supply circuit of the linkage electric control valve on the gas main pipe connected in series with the power supply circuit of the linkage electric control valve on the gas main pipe is powered on, and the linkage electric control valves on the gas branch pipe, the gas main pipe and the gas main pipe are opened to ensure that the burner supplies gas for combustion. When all the burners are flameout, the flameout interlocking electric control valves of all the burners are powered off, the interlocking electric control valves on the gas branch pipes, the gas main pipes and the gas main pipes which are connected are controlled to be powered off, and the interlocking electric control valves cut off the gas of the gas main pipes, the gas main pipes and the gas branch pipes and cut off the gas of all the burners. The flameout linkage control circuit is arranged according to the gas pipeline system, all gas pipelines on the gas pipeline system stop supplying gas, and all stages of pipeline system linkage electric control valves are closed layer by layer, so that gas leakage caused by accidental damage and misoperation of the gas pipeline system is prevented.
After the gas pipeline system respectively closes the linkage electric control valves according to the sequence of the gas branch pipe, the gas main pipe and the gas main pipe, both ends in the closed pipeline are provided with closed linkage electric control valve closing pipelines, the original gas pressure is still maintained in the closed pipeline, the outlet end of the linkage electric control valve is provided with a gas pressure sensor and a connecting circuit, the pressure change in the gas pipe is measured in real time, and a sampling signal is transmitted to an intelligent programming controller to analyze and calculate the pressure change in the gas pipe in real time. When the gas pressure on the independent pipe section is analyzed and calculated by the intelligent programming controller, the gas unsealing and leakage position is determined, and an alarm signal is sent. The pressure increase indicates that the air inlet end linkage electric control valve is airtight, and the pressure decrease indicates that the gas pipe or the air outlet end linkage electric control valve is airtight. The gas monitoring alarm device is arranged in a working room with gas equipment, when the gas in the monitoring room has leakage or insufficient gas combustion, the gas monitoring alarm device is provided with a gas pressure sensor and an intelligent control circuit for monitoring and analyzing the gas sensor, and the configured audible and visual alarm device is started to directly alarm and is transmitted to the intelligent programming controller. The intelligent programming controller output unit outputs control instructions to various external devices, and implements monitoring, displaying, recording, audible and visual alarm and starts the ventilation device for removing leaked fuel gas.
The gas pipeline system is in tree connection, a plurality of gas main pipes are connected in parallel, a plurality of gas branch pipes are connected in parallel on the gas main pipes, and a plurality of gas pipes of the burners are connected in parallel on the gas branch pipes. The same gas main pipe is connected with a plurality of gas main pipes in parallel, which is called: associating the gas main pipes in parallel; the gas main pipe is connected with a plurality of gas branch pipes in parallel, which is called: associating the parallel gas branch pipes; the gas branch pipe is connected with the gas pipes of a plurality of combustors in parallel and is called: and the gas pipes are connected in parallel. The gas pipe of the related parallel burner is communicated with the gas branch pipe, the related parallel gas branch pipe is communicated with the gas main pipe, and the related parallel gas main pipe is communicated with the gas main pipe. The gas main pipe, the gas branch pipe and the gas pipeline which are connected in series according to the gas incoming direction are related gas pipelines.
In order to prevent and monitor a gas pipeline system, each burner is provided with a flameout linkage electric control valve, a gas main pipe and a gas branch pipe are all provided with linkage electric control valves for automatically closing the gas pipe at the joint of the gas pipe, the linkage electric control valves on the gas pipe are controlled by the flameout linkage electric control valves, and the flameout linkage electric control valves and a linkage electric control valve control circuit are connected by a tree flameout linkage control circuit. The flameout linkage electric control valve of the gas pipeline system and the power supply line of the linkage electric control valve are connected according to a tree-shaped flameout linkage control circuit, the power supply line of the flameout linkage electric control valve on the associated parallel gas pipe of the burner is connected with a power supply in parallel, the other end of the power supply line of the flameout linkage electric control valve is connected with the power supply line of the gas branch pipe linkage electric control valve in series after being connected in parallel, the power supply line of the associated parallel gas branch pipe linkage electric control valve is connected with the power supply line of the gas main pipe linkage electric control valve in series after being connected in parallel, one end of the power supply line of the gas main pipe linkage electric control valve is connected with the power supply in series, and the flameout linkage electric control valve and the linkage electric control valve of the gas pipeline system are powered in series at two ends of the power supply. The flameout linkage electric control valve of the burner is flameout and powered off, so that power supply to the power supply circuit of the connected gas branch pipe linkage electric control valve is stopped, all flameout linkage electric control valves on the associated parallel gas pipes are flameout and closed, the power supply circuit of the connected gas branch pipe linkage electric control valve is stopped, and the power supply circuit of the gas branch pipe linkage electric control valve is powered off. The power lines of the gas main pipe linkage electric control valves and the associated parallel gas branch pipe linkage electric control valves are all powered off, and the power lines of the connected gas main pipe linkage electric control valves are powered off. All power lines of the associated parallel gas main pipe linkage electric control valve on the gas main pipe are powered off, and the power lines of the gas main pipe linkage electric control valve power lines are powered off. The tree flameout linkage control circuit is to utilize the switch control of flameout linkage electric control valve of the burner to realize the synchronous switch of linkage electric control valve of gas-associated gas pipe. All the gas pipelines on the gas pipeline system stop supplying gas, the linkage electric control valves of all stages of pipeline systems are closed layer by layer, the gas pipeline sections are monitored, and gas leakage caused by accidental damage and misoperation of the gas pipeline system is prevented.
When the linkage electric control valves of all the gas pipelines on the gas pipeline system are powered off to stop supplying gas, when a certain burner is ignited, the ignition switch power supply supplies power to the flameout linkage electric control valve and the linkage electric control valves connected in series on the gas pipeline at the same time of igniting the burner, and the linkage electric control valves connected in series on the gas pipeline only need to be opened for 0.1 second. When the diameter of the gas pipe is larger, the opening time of the interlocked gas-fired electric valve needs a few seconds. The gas pressure propagates with sound velocity, the gas pressure is supplied through a gas main pipe, a main pipe and a branch pipe, the burner ignites and burns, when the flame of the burner burns, a flame detector in the burner opens a linkage gas electric valve, and meanwhile, the power supply of a linkage electric control valve power supply of the gas main pipe, the main pipe and the branch pipe which are connected in series on a gas pipeline is connected, and all the linkage electric control valves are connected in series to open the gas supply, so that the burner burns.
The power supply lines of the flameout linkage electric control valves of other non-ignited burners on the same gas branch pipe are disconnected by the switches of the respective flameout linkage electric control valves, and no current exists, so that the gas branch pipe is in a closed state. When all burners on the gas branch pipe are flameout, flameout linkage electric control valves of all burners are powered off, power lines connected in series by linkage electric control valves on the gas branch pipe are powered off, and the linkage electric control valves of the gas branch pipe cut off gas of the gas branch pipe.
The flameout protection function of the burner needs to be completed by matching the flameout interlocking electric control valve, the flame detector and the execution circuit. Because the types and models of the combustion equipment are different, the arranged flameout interlocking electric control valve, the flame detector and the execution circuit are also different according to different requirements of the burner equipment and the gas pipeline. The flame detector can be a thermocouple, a temperature control switch, a photoelectric sensor switch and the like. The execution circuit also has a combination mode of different cooperation use of a thermocouple, a flameout linkage electric control valve, a relay switch, a flameout linkage electric control valve, a temperature control switch, a flameout linkage electric control valve, a photoelectric sensor switch, a flameout linkage electric control valve and the like.
The flameout interlocking electric control valve consists of a normally closed electric control valve and an internal power switch. The electrically controlled valve may be a normally closed solenoid valve or a normally closed electrically operated valve. When the thermocouple and the flameout interlocking electric control valve are matched for use in a combined mode, the thermocouple is arranged beside a flame in the combustor, the thermocouple is heated by flame to generate current, an electromagnetic coil of the electromagnetic valve generates a magnetic field, an iron core of the electromagnet and an armature valve keep a suction state, the armature valve is opened, the other surface of the iron core magnetic field of the electromagnet enables an electrode armature of a power switch to keep a suction state when the gas valve is opened, a power supply connecting electrode is connected, the flameout interlocking electric control valve is powered on, and meanwhile, a gas main pipe, a main pipe and a branch pipe on the gas pipeline are connected in series in an associated mode to form an interlocking electric control valve to start gas supply, so that the combustion of the combustor is ensured. The burner continues to burn, the thermocouple keeps thermal current, and the flameout interlocking electric control valve of the burner keeps an open air supply state. And the linkage electric control valve for connecting the gas main pipe, the main pipe and the branch pipe in series keeps an open gas supply state.
When the burner is flameout or accidentally flameout, the flame vanishing temperature in the burner is reduced, the current generated by a thermocouple in the burner is weakened and vanished, the magnetic force of the magnetic field generated by the electromagnetic coil is reduced, the elastic force of the valve armature spring and the electrode armature spring of the valve armature is larger than the magnetic force of the magnetic field, the valve armature and the electrode armature cannot be continuously attracted, the valve is blocked and closed by the elastic force of the valve armature spring of the valve armature, the gas valve port is closed, the gas supply is stopped, the electrode armature spring of the electrode armature is rebounded to the electrode armature, the power switch electrode is disconnected, the circuit power is stopped, and the flameout interlocking electric control valve of the burner is closed. The power switch in the flameout linkage electric control valve cuts off the power supply and also cuts off the power supply to the gas branch linkage electric control valve. The flameout protection is realized, and the gas leakage is prevented.
When the pipe diameter of the controlled gas pipe is larger or the circuit is longer, the thermoelectric couple thermal current is smaller, and in order to improve the reliability of controlling the opening of the flameout linkage electric control valve, the thermoelectric couple is matched with a relay switch. The relay is a normally closed relay, the thermoelectric couple is only used for supplying a relay switch, a power electrode is arranged in the relay, when current generated by a thermoelectric couple in the burner flows through the relay, the power electrode is connected with a switch armature attracted in a generated magnetic field, the power electrode is connected with a power line of a linkage electric control valve on a gas pipe in series, and the linkage electric control valve is electrically opened.
According to the system, a high-temperature-resistant normally-closed temperature control switch can be arranged in the burner, the normally-closed temperature control switch arranged in the burner reaches preset temperature under the barbecue of high-temperature flame of the burner, two different metal contacts of the temperature control switch are electrically connected with a power supply line of a flameout interlocking electric control valve and a linkage electric control valve of the gas pipe, and the flameout interlocking electric control valve and the linkage electric control valve are electrically kept in an on state. When flameout or accidental flameout occurs, the temperature in the burner is reduced, the temperature control switch of the burner is disconnected from the circuit, and the temperature control switch is powered off from a power line which is connected with the flameout linkage electric control valve and the linkage electric control valve on the gas pipe in series. The photoelectric sensor and the control circuit are used for detecting that the flame of the burner controls the power on or off of the flameout linkage electric control valve and the linkage electric control valve which are connected in series.
In order to improve the intelligent control display, record, alarm and start the ventilation equipment function of removing the leaked fuel gas of the fuel gas safety system, all flameout interlocking electric control valves, interlocking electric control valves and fuel gas pressure sensors arranged on the fuel gas pipeline system are connected with bus terminals in a one-to-one correspondence manner through connecting circuits, and are connected with an intelligent programming controller input unit in a one-to-one correspondence manner through the bus terminals, so that the intelligent programming controller central processor is provided with all flameout interlocking electric control valves, the positions, the switch states, the fuel gas pressure sensor positions, sampling measurement parameters, fuel gas alarm signals and other working condition parameter signals, intelligent monitoring, display, record, audible and visual alarm are implemented, the ventilation equipment of removing the leaked fuel gas is started, the positions of the leaked fuel gas are determined, and reliable technical basis is provided for finding fault points. The intelligent gas linkage safety system consisting of the flameout linkage electric control valve, the gas pressure sensor and the intelligent programming controller is utilized to realize unmanned monitoring of the gas pipeline system, even if gas leakage occurs in the gas pipeline, a large amount of gas cannot leak due to the blocking of the linkage electric control valve at the upper end and the lower end, and the safety of the pipeline system is ensured. The flameout linkage control circuit is utilized to connect the flameout linkage electric control valve and the associated linkage electric control valve in series, so that the leakage of fuel gas of the fuel gas pipeline is effectively prevented, and the flameout linkage electric control valve can be widely applied to household, public kitchens and industrial production.
The invention relates to a flameout linkage control circuit for preventing gas leakage in a gas pipeline system, a flameout linkage electric control valve and an intelligent gas pipeline linkage safety control system which are used for monitoring and preventing gas leakage of a gas pipe and a gas valve, wherein the flameout linkage electric control valve and an intelligent programming controller are combined. The adopted technical scheme is as follows: the flameout linkage control valve is connected with the associated linkage control valve in series by utilizing the flameout linkage control circuit, and the flameout linkage control valve is combined with the intelligent programming controller to form an intelligent gas linkage safety system, so that the intelligent gas linkage safety system has the effects of monitoring the gas pipeline system and preventing leakage of the gas pipe and the gas valve.
On a relatively independent gas pipeline system, a gas main pipe, a main pipe and branch pipes form a tree-shaped connecting pipe network. The gas main pipe, the main pipe and the branch pipe of the gas pipeline system are provided with linkage electric control valves for automatically closing the gas pipe when flameout, the gas branch pipe is provided with a plurality of burners, and each burner is provided with a flameout linkage electric control valve. The flameout linkage control circuit is used for connecting the flameout linkage electric control valve and the associated linkage electric control valve in series, so that the flameout linkage electric control valve has the function of preventing leakage of the gas pipe and the gas valve.
The linkage electric control valve mainly comprises a normally closed electric control valve and a pressure sensor, and is used for controlling the switch and the pressure detection of the gas pipeline to prevent the gas pipeline from leaking and the gas from leaking. The linkage electric control valve applied to the linkage electric control valves of the gas branch pipe, the gas main pipe and the gas main pipe consists of a normally closed electromagnetic valve or a normally closed electric valve, a gas pressure sensor and a connecting circuit. The flameout linkage electrically controlled valve is a normally closed electromagnetic valve, a fuel gas pressure sensor is arranged in the outlet direction of a valve body of the normally closed electromagnetic valve, the connection fixing and the cross section area of a valve body thread or flange are matched and sealed with a fuel gas pipe, a base for installing the fuel gas pressure sensor is arranged in the same direction of the valve body and the electromagnetic valve, a communication hole communicated with the valve body is arranged in the center of the base, the fuel gas pressure sensor is screwed into a screw port of the base to be in sealing connection, and the fuel gas pressure sensor measures the fuel gas pressure through the valve body communication hole. The pressure signals detected by the gas pressure sensor are connected with the bus terminals in a one-to-one correspondence manner through the signal wire cables, and are linked with the intelligent programming controller input units in a one-to-one correspondence manner through the bus terminals.
The flameout interlocking electric control valve is an electric control valve with a built-in power switch, and the flame detector controls the electric control valve and the power switch to be opened and closed. The electric control valve of the flameout interlocking electric control valve can be a normally closed electromagnetic valve or a normally closed electric valve. The method is characterized in that: the flame detector of the burner is used for controlling the switch of the flameout linkage electric control valve, one side of the magnetic field of the electromagnet in the flameout linkage electric control valve is provided with a gas valve, the other side of the magnetic field is provided with a power switch, one end of the power switch is connected with a power supply, and the other end of the power switch is connected with the linkage electric control valve arranged on the gas pipe in series. The electromagnetic iron of the electromagnetic valve of the flameout interlocking electric control valve consists of an electromagnetic coil and an iron core, wherein an electromagnetic field is formed on two sides of the electromagnetic iron, one end of the electromagnetic field is provided with a gas valve, and the other end of the electromagnetic field is provided with a power switch. The electromagnetic coil is connected with a thermocouple of a flame detector of the burner through a coil binding post of the flameout interlocking electric control valve, current generated by the thermocouple passes through the electromagnetic coil of the electromagnet, the electromagnetic coil of the electromagnet and the iron core generate a magnetic field, one side of the formed magnetic field attracts the valve armature, the valve armature spring is compressed by magnetic force to open the gas valve, and the normal gas supply of a gas channel of the burner is maintained. The other side of the magnetic field is provided with a power switch which consists of an electrode armature and a power electrode contact. The magnetic field attracts the electrode armature, the magnetic force of the magnetic field compresses the electrode armature spring, the armature electrode is connected with the electrode contact of the power supply, and the power supply is connected. The electrode armature is in a suction state, the electrode armature is connected with power electrode contacts on two sides of the electrode armature, a power connection line is kept to be electrified, a power switch is connected with a power line and a coil binding post through a binding post of the power electrode, the other power line is connected with a linkage electric control valve power line of a gas branch pipe, the power line is connected with a power supply in series through a coil of the linkage electric control valve for controlling the gas branch pipe, the linkage electric control valve power line of a gas main pipe, and the power supply of the gas main pipe. When the burner is flameout or accidentally flameout, the temperature in the burner is reduced, the current generated by a thermocouple in the burner is weakened, the magnetic force of a magnetic field generated by an electromagnetic coil is reduced, the elastic force of a valve armature spring of a valve armature and a power switch spring of an electrode armature is larger than the magnetic force of the magnetic field, the valve armature and the electrode armature cannot be continuously attracted, the valve is blocked and closed by the valve armature spring of the valve armature, the gas valve is stopped, the gas supply is stopped, the power switch spring of the electrode armature rebounds to the electrode armature, the power switch electrode is disconnected, the circuit power is stopped, and the flameout interlocking electric control valve of the burner is closed. The power switch in the flameout linkage electric control valve cuts off the power supply and also cuts off the power supply to the gas branch linkage electric control valve. The flameout protection is realized, and the gas leakage is prevented.
Each group of burners is provided with a flameout linkage electric control valve, and flameout protection effect of the flameout linkage electric control valve needs to be controlled by a burner flame detector and an execution circuit. The burner flame detector can be a thermocouple, a temperature control switch and a photoelectric sensor switch, and converts the measurement result of the flame detector into an electric signal which can be executed by the execution circuit to control the normally closed electromagnetic valve switch of the flameout interlocking electric control valve. The burner flame detector executing circuit can be a circuit matched with a temperature control switch, a photoelectric sensor switch, a thermocouple and a relay.
The thermocouple and the temperature control switch are arranged in the burner and close to the position of flame external combustion, so that the flame can be reliably detected in time. The thermocouple is arranged at the position of the burner in the gas stove for burning, and the electromagnetic coil of the normally closed electromagnetic valve of the flameout interlocking electric control valve is connected with the electromagnetic coil of the thermocouple through the binding post. The electric current that the thermocouple received the heating of fire to produce flows through the electromagnetic coil of electro-magnet, and electromagnetic coil and the iron core of electro-magnet produce the magnetic field, and the valve armature is drawn in to the electromagnetic field one side that forms, and the electrode armature is drawn in to the other side magnetic field, and the power switch electrode contact on electrode armature both sides is connected to the electrode armature, keeps the power connection line circular telegram. The current generated by the thermocouple in the burner controls the switch of the flameout interlocking electric control valve.
When the pipe diameter of the gas pipe to be controlled is large or the connecting line is long, the thermocouple and the relay are matched to control the flameout interlocking electric control valve to improve the control reliability of the thermocouple. The relay is a normally closed relay, the thermocouple is connected with the relay, and the thermoelectric current of the thermocouple ensures the switch of the relay. The relay is internally provided with an electrode communicated with a power supply, when current generated by a thermocouple in the burner flows through the relay, a switch armature attracted by a generated magnetic field is connected with the power supply electrode, the relay power supply electrode is connected with a power supply circuit of a linkage electric control valve of a flameout linkage electric control valve and a gas branch pipe, the linked electric control valve of the flameout linkage electric control valve of the burner and the gas branch pipe is powered on, the electromagnetic valve is kept in a state of being powered on, and the burner is continuously supplied with gas for combustion. When flameout or accidental flameout happens, the thermocouple stops generating current, the normally closed relay is powered off to disconnect the electrode, the flameout linkage electric control valve of the burner is closed, and the power supply to the linkage electric control valve of the gas branch pipe is also disconnected. The flameout protection is realized, and the gas leakage is prevented.
According to the system, a high-temperature-resistant normally closed temperature control switch can be arranged in the combustor, and when the temperature control switch is used as a combustor flame detector, the temperature control switch is arranged at a position close to flame external combustion in the combustor, so that the timely and reliable detection of the flame is ensured. The normally closed temperature control switch arranged in the burner is internally provided with two high-temperature-resistant metal sheets of different metals which are not contacted with each other, the two high-temperature-resistant metal sheets are respectively connected with a power line and a flameout linkage electric control valve power line, the normally closed temperature control switch of the burner is heated, the two high-temperature-resistant metal sheets are bent, under the barbecue of high-temperature flame of the burner, the two high-temperature-resistant metal sheets reaching the preset temperature control switch are close to be connected with a power supply, the flameout linkage electric control valve power supply is conducted, the flameout linkage electric control valve is electrically kept in an on state, and the power line connected with the gas branch pipe, the gas main pipe and the linkage electric control valve on the gas main pipe in series is electrically opened, and the linkage electric control valve is in an on-gas supply state. When flameout or accidental flameout occurs, the temperature control switch is turned off, the burner flameout linkage electric control valve is turned off, and a power supply line leading to the gas branch pipe linkage electric control valve is also turned off. The temperature control switch and the power switch in the flameout interlocking electric control valve have complementary effects.
The power switch can also be composed of a photoelectric sensor, a flameout interlocking electric control valve and a connecting circuit according to the structural requirement of the combustion equipment. The power switch controlled by the photoelectric sensor can be arranged outside the burner of the combustion equipment, the photoelectric sensor can be a light-operated sensor and an infrared sensor, a sensor probe is arranged at the position where the light intensity of the burner can be directly detected by the light-operated sensor and the infrared sensor, when the light intensity of the fire of the burner is detected to reach a preset value, the light-operated sensor circuit is connected with a power line of the flameout interlocking electric control valve, the power of the flameout interlocking electric control valve is controlled to be conducted, and the flameout interlocking electric control valve is opened. When the sensor detects that the parameter is lower than a preset value, the sensor turns off the power supply and turns off the flameout linkage electric control valve.
The gas pipeline systems are all in tree connection, namely the gas pipes of the associated parallel connection combustors are communicated with the gas branch pipes, the associated parallel connection gas branch pipes are communicated with the gas main pipes, and the associated parallel connection gas main pipes are communicated with the gas main pipes. In order to prevent and monitor the gas pipeline system, the gas pipeline system is connected by adopting a tree flameout interlocking control circuit. The tree flameout linkage control circuit is connected with the linkage control valves that flameout linkage control valves are arranged on each burner, and the gas main pipe, the gas main pipe and the gas branch pipe are all provided with linkage control valves for automatically closing the gas pipe at the joint of the gas pipe, and the linkage control valves on the gas pipe are controlled by the flameout linkage control valves. The flameout linkage electric control valve and the linkage electric control valve control circuit are connected by a tree flameout linkage control circuit, and the flameout linkage electric control valve is characterized in that: the flameout linkage control valve is arranged on the burner, the linkage control valve is arranged on the gas pipeline, a power supply on the flameout linkage control circuit is connected with the flameout linkage control valve in series, the flameout linkage control valve is connected with the linkage control valve on the related gas pipeline in series, and the flameout linkage control valve switch controls the linkage control valve switch through the flameout linkage control circuit.
The flameout linkage electric control valve of the gas pipeline system and the power supply line of the linkage electric control valve are connected according to a tree-shaped flameout linkage control circuit, the power supply line of the flameout linkage electric control valve on the associated parallel gas pipe of the burner is connected with a power supply in parallel, the other end of the burner is connected with the power supply line of the associated gas branch pipe linkage electric control valve in series after being connected in parallel, the power supply line of the associated parallel gas branch pipe linkage electric control valve is connected with the power supply line of the associated gas main pipe linkage electric control valve in series after being connected in parallel, the power supply line of the gas main pipe linkage electric control valve is connected with a power supply in series, and the flameout linkage electric control valve and the linkage electric control valve of the gas pipeline system are powered in series at two ends of the power supply. The flameout linkage electric control valve of the burner is flameout and powered off, so that power supply to the power supply circuit of the connected gas branch pipe linkage electric control valve is stopped, all flameout linkage electric control valves on the associated parallel gas pipes are flameout and closed, the power supply circuit of the connected gas branch pipe linkage electric control valve is stopped, and the power supply circuit of the gas branch pipe linkage electric control valve is powered off. The power lines of the gas main pipe linkage electric control valves and the associated parallel gas branch pipe linkage electric control valves are all powered off, and the power lines of the connected gas main pipe linkage electric control valves are powered off. All power lines of the associated parallel gas main pipe linkage electric control valve on the gas main pipe are powered off, and the power lines of the gas main pipe linkage electric control valve power lines are powered off. The linkage electric control valve of outage closes the gas electric control valve, cuts off the gas. The tree flameout linkage control circuit is to utilize the switch control of flameout linkage electric control valve of the burner to realize the synchronous switch of linkage electric control valve of gas-associated gas pipe. All the gas pipelines on the gas pipeline system stop supplying gas, the linkage electric control valves of all stages of pipeline systems are closed layer by layer, the pressure of the gas pipeline sections is monitored, and gas leakage caused by accidental damage and misoperation of the gas pipeline system is prevented.
When the linkage electric control valves of all the gas pipelines on the gas pipeline system are powered off to stop supplying gas, when a certain burner is ignited, the ignition switch power supply supplies power for the flameout linkage electric control valve and the multistage series linkage electric control valves connected in series on the gas pipeline while igniting the burner, and the linkage electric control valves connected in series on the gas pipeline are opened. All the associated linkage electric control valves start air supply, so that the combustion of the burner is ensured.
The power supply lines of the flameout linkage electric control valves of other non-ignited burners on the same gas branch pipe are disconnected by the switches of the respective flameout linkage electric control valves, and no current exists, so that the gas branch pipe is in a closed state. When all burners on the gas branch pipe are flameout, flameout linkage electric control valves of all burners are powered off, power lines connected in series by linkage electric control valves on the gas branch pipe are powered off, and the linkage electric control valves of the gas branch pipe cut off gas of the gas branch pipe.
After the gas pipeline system respectively closes the linkage electric control valve according to the sequence of the burner, the gas branch pipe, the gas main pipe and the gas main pipe, both ends in the closed pipeline are provided with closed linkage electric control valve closing pipelines, the original gas pressure is still maintained in the closed pipeline, the outlet end of the linkage electric control valve is provided with a gas pressure sensor and a connecting circuit, the pressure change in the gas pipe is measured in real time, and a sampling signal is transmitted to an intelligent programming controller, and the residual pressure change in the gas pipe is monitored, analyzed and calculated in real time. When the gas residual pressure on the independent pipe section is analyzed and calculated by the intelligent programming controller to change, an alarm signal is sent out when the pressure exceeds a preset pressure value. The pressure increase indicates that the air inlet end linkage electric control valve is not sealed and air leakage, and the pressure decrease indicates that the gas pipe or the air outlet end flameout linkage electric control valve is air leakage. The intelligent programming controller output unit outputs control instructions to various external devices, performs display recording according to a preset program, and controls audible and visual alarm and starts ventilation equipment for discharging leaked fuel gas.
In order to improve the intelligent control function of the intelligent gas linkage safety system, the system is provided with an intelligent programming controller. The intelligent programming controller mainly comprises a power supply, a central processor, a memory, an input unit, an output unit and the like. The intelligent programming controller power supply supplies power to each unit of the intelligent programming controller. The memory is used for storing system programs and application programs and has the functions of inputting, storing and memorizing the gas pipeline system control programs, and different pipeline system control programs can be edited and input. The input unit is an operating condition signal input interface channel circuit of the intelligent gas linkage safety system for acquiring flameout linkage electric control valves, linkage electric control valves and gas pressure sensors. And providing working condition parameter signals such as all flameout linkage electric control valves, linkage electric control valve positions, switch states, gas pressure sensor positions, sampling measurement parameters, gas alarm sensor signals and the like for the central processor of the intelligent programming controller. The central processor is used for transmitting the signals of the itinerary scanning flameout linkage electric control valve, the gas pressure sensor and the gas alarm to the working condition signal and the detection sampling parameter of the central processor input unit, reading the control program preset in the gas pipeline one by one from the memory, analyzing and processing the control program, and sending out an execution program instruction through the output unit. The output unit outputs the interface circuit of the execution instruction to the central processor, and executes the instructions of intelligent monitoring, display, recording, audible and visual alarm, remote alarm and starting the ventilation equipment for removing the leaked fuel gas. The intelligent control system is characterized in that a gas monitoring alarm device is arranged in each workshop to monitor the gas leakage or insufficient gas combustion in the room, the gas monitoring alarm device is provided with a gas pressure sensor and an intelligent control circuit for monitoring and analyzing the gas sensor, and the configured audible and visual alarm device is started to directly alarm and transmit the alarm to an intelligent programming controller. All flameout linkage electric control valves, gas pressure sensors and gas sensor signals installed on a gas pipeline system are in one-to-one correspondence connection with bus terminals through connecting circuits, and are in one-to-one correspondence connection with intelligent programming controller input units through the bus terminals, so that working condition sampling signals such as the positions, the on-off states and the gas pressure sensor positions and measurement parameters of all flameout linkage electric control valves, linkage electric control valves are provided for an intelligent programming controller central processor, intelligent monitoring, displaying, recording, audible and visual alarming, remote alarming and starting ventilation equipment for removing leaked gas are implemented, and the positions of gas leakage occurrence in analysis are judged, so that reliable technical basis is provided for finding fault points. An intelligent gas linkage safety system consisting of a flameout linkage electric control valve, a gas pressure sensor and an intelligent programming controller is utilized, and the flameout linkage control circuit monitors the gas pipeline system from time to time according to the setting of the gas pipeline system. Even if the gas pipeline leaks gas, the linkage electric control valve and the flameout linkage electric control valve at the upper end and the lower end are blocked, so that only the gas in the pipeline leaks, a large amount of gas cannot leak, unmanned monitoring is implemented, and the safety of a pipeline system is ensured.
Compared with the prior art, the invention has the following advantages:
1. the intelligent gas linkage safety system eliminates gas leakage accidents of pipelines at all levels by utilizing flameout linkage electric control valves, linkage electric control valves and tree flameout linkage control circuits, and realizes intelligent monitoring of all pipe valves by the intelligent gas linkage safety system.
2. The tree flameout interlocking control circuit for the relatively independent gas pipeline system is characterized in that each stage of pipeline is manually opened and closed one by one to realize automatic opening and closing of the gas pipeline system according to the working requirements of combustion equipment, and each gas valve does not need to be manually opened and closed. Eliminating the problem of gas leakage caused by human error.
3. The flameout interlocking electric control valve and principle are applicable to various pipelines of each stage of a relatively independent gas pipeline system, and are also applicable to household gas stoves and gas pipes. The flameout linkage electric control valve and the pipeline linkage electric control valve of the household gas stove plate are matched with the gas monitoring alarm device to play a role in protecting multiple leakage-proof safety.
4. The intelligent gas linkage safety system realizes intelligent control of a gas pipeline system, can perform intelligent monitoring, display, recording, audible and visual alarm on the system, starts ventilation equipment for removing leaked gas, determines the position where gas leakage occurs, and provides reliable technical basis for finding fault points.
5. The intelligent gas linkage safety system has the advantages of mature, simple and reliable accessory technology, wide universality, and low cost, and can be used in residential families, public kitchens and factory workshops only by implementing technology upgrading on the original gas pipeline system.
Drawings
FIG. 1 is a schematic diagram of an intelligent gas linkage safety system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the intelligent gas linkage safety system pipeline connection of fig. 1.
Fig. 3 is an enlarged partial schematic view of fig. 1.
Fig. 4 is an enlarged partial schematic view of fig. 3.
Fig. 5 is an enlarged partial schematic view of fig. 1.
Fig. 6 is an enlarged partial schematic view of fig. 1.
In the figure
G1. Gas main pipe, G2. main pipe gas valve, G3. main pipe linkage electric control valve, G4. main pipe gas valve, G5. main pipe linkage electric control valve, G6. gas main pipe, G7. branch pipe linkage electric control valve, G8. gas branch pipe, G9. flameout linkage electric control valve, G10 branch pipe gas valve, G11 gas stove ignition switch, G12 burner, G13 thermocouple, G14 ignition needle, G15 temperature control switch, G16 ignition switch, G17 relay, G18 stove flameout linkage electric control valve, G19 gas stove, G20 gas low soup stove, G21 stewing stove, G22 gas cooking stove,
D1. Electromagnet, D2. valve armature, D3 gas valve hole, D4. gas pipe, D5. power switch electrode, D6. electrode armature, D7. coil terminal, D8. electrode terminal, D9. power switch spring, D10 electromagnetic coil, D11 valve armature spring, D12 relay electrode, D13 armature spring, D14 relay armature, D15 valve body, D16 light-operated sensor switch, D17 gas valve port, D18 gas pressure sensor, D19 communication hole,
Z1. intelligent programming controller, Z2. central processor, Z3. input unit, Z4. intelligent programming controller power supply, Z5 memory, Z6. output unit, Z7. ventilation equipment, Z8. system display, Z9. remote wireless transmission device, Z10 audible and visual alarm device, Z11 gas monitoring and alarm device, Z12 bus terminal, Z13 signal line cable, Z14 power cable, Z15 power supply,
Detailed Description
The invention will be further described with reference to examples shown in the drawings. FIG. 1 is a schematic diagram of the connection of the intelligent gas linkage safety system used in the kitchen combustion equipment and the gas pipeline system. The gas main pipe is communicated with a gas main pipe (G6) which is connected in parallel through a main pipe gas valve (G2), a main pipe linkage electric control valve (G3) and a gas tee joint, the gas main pipe is communicated with a gas branch pipe (G8) which is connected in parallel through a main pipe gas valve (G4), a main pipe linkage electric control valve (G5) and a gas tee joint, the gas branch pipe is respectively communicated with a stove burner (G12) through a branch pipe gas valve (G10), a branch pipe linkage electric control valve (G7) and a gas pipe, and a flameout linkage electric control valve (G9) is arranged between each stove burner and the gas pipe of each stove. A gas monitoring alarm device (Z11), an audible and visual alarm device (Z10) and a ventilation device (Z7) are arranged in a working room with gas and a burner.
The kitchen is provided with combustion equipment such as a gas stove plate (G19), a gas low soup stove (G20), a gas stewing stove (G21), a gas cooking stove (G22) and the like. The gas pipeline is provided with an intelligent gas linkage safety system consisting of a gas main pipe (G1), a gas main pipe (G6), a gas branch pipe (G8) and a pipeline and an intelligent programming controller (Z1).
Each burner is provided with a flameout protection circuit which is composed of a flameout interlocking electric control valve, a burner flame detector and a control circuit in a matching way. The flameout interlocking electric control valve is composed of a normally closed electric control valve and a power switch arranged in the valve. The normally-closed electric control valve can be a normally-closed electromagnetic valve or a normally-closed electric valve. The burner flame detector can be a flameout protection circuit consisting of a thermocouple (G13), a temperature control switch (G15), a photoelectric sensor switch (D16) and a flameout linkage electric control valve. The kitchen is equipped with the gas stove dish be a domestic gas stove dish, and two combustors are furnished with flameout interlocking electrically controlled valve (G18) and thermocouple (G13), with the dual flameout protection of the last branch pipe linkage electrically controlled valve (G7) of UNICOM's gas branch pipe (G8) constitution prevent gas leakage. A flame-out protection circuit of the gas low-soup stove is formed by connecting a thermocouple (G13) and a flame-out interlocking electric control valve in a hearth of the gas low-soup stove. The gas stewing stove is a flameout protection circuit consisting of a thermocouple, a relay (G17), a flameout interlocking electric control valve and a connecting circuit. A flameout protection circuit consisting of a temperature control switch (G15) and a flameout linkage electrically controlled valve is arranged in a burner hearth of the gas cooking stove. The other burner is provided with a flameout protection circuit which is formed by connecting a photoelectric sensor switch (D16) and a flameout interlocking electric control valve.
The gas stove plate (G19) is a household gas stove, and a double flameout protection circuit formed by connecting a thermocouple (G13) and an ignition needle (G14) with a stove plate flameout linkage electric control valve (G18) and a gas branch pipe linkage electric control valve (G7) is arranged in each stove burner (G12). The flameout interlocking electric control valve of the gas stove plate is a normally closed electromagnetic valve with a power switch inside. The flameout interlocking electric control valve of the gas stove plate is fixed at a gas valve hole (D3) of a gas pipe (D4) through threads, and the flameout interlocking electric control valve is sealed with the gas pipe through threads and a sealing ring. The gas stove plate burner is internally provided with a thermocouple (G13) and an ignition needle (G14) beside the internal fire, and the gas stove plate is provided with an ignition switch (G16). The flameout interlocking electric control valve consists of an electromagnet (D1) of a normally closed electromagnetic valve, a gas valve, a power switch and a connecting circuit. The electromagnet consists of an electromagnetic coil (D10) and an iron core, and the electromagnetic coil of the electromagnet is connected with the thermocouple through a coil binding post (D7). The thermocouple induction head is arranged beside a fire in the gas stove burner, the burner ignites and burns, the fire burns and burns the thermocouple, the thermocouple is heated by flame to generate current, the current generated by the thermocouple passes through the electromagnetic coil of the electromagnetic valve to enable the electromagnetic coil of the electromagnetic valve to generate a magnetic field, the magnetic field of the electromagnetic valve attracts the valve armature (D2), the magnetic force compresses the valve armature spring (D11) to open the gas valve, and the gas pipe (D4) supplies gas to the gas channel of the burner for burning. The burner is flameout, the thermocouple stops generating current, the electromagnetic coil is powered off, the magnetic field disappears, the valve armature spring enables the valve at the end part of the valve armature to be blocked and cut off a gas valve hole (D3), and gas is cut off. The other surface of the electromagnetic field is provided with a power switch which consists of an electrode armature (D6) and a contact of a power switch electrode (D5). An electromagnetic field attracts the electrode armature, the electromagnetic field magnetic force compresses the electrode armature spring (D9), and the armature electrode is connected with an electrode contact of the power switch and is connected with a power supply. The electrode armature is in a suction state, the electrode armature is connected with electrode contacts of a power switch on two sides of the electrode armature, a power connection line is kept to be electrified, the power switch is connected with a power supply (Z15) and an electromagnetic coil binding post through an electrode binding post, one power switch is connected with a linkage electric control valve (G7) of a gas branch pipe in series, the power supply is connected with a power supply in series through an electromagnetic wire of the linkage electric control valve of the control gas branch pipe, a gas main pipe and an electromagnetic wire of the linkage electric control valve of a gas main pipe, the power switch is communicated with the electromagnetic coil of the linkage electric control valve of the gas branch pipe, the gas main pipe and the gas main pipe in series, the linkage electric control valve of the gas branch pipe, the gas main pipe and the gas main pipe are started, and the gas pipe is started for gas supply. When the burner is flameout or accidentally flameout, the flame vanishing temperature in the burner is reduced, the current generated by a thermocouple in the burner is weakened and vanished, the magnetic force of the magnetic field generated by the electromagnetic coil is reduced, the elastic force of the valve armature spring of the valve armature and the power switch spring of the electrode armature is larger than the magnetic force of the magnetic field, the valve armature and the electrode armature cannot be continuously attracted, the valve is blocked and closed by the valve armature spring of the valve armature, the gas supply is stopped, the electrode armature spring of the electrode armature rebounds to the electrode armature, the power switch electrode is disconnected, the circuit power is stopped, and the flameout linkage electric control valve of the gas stove burner is closed. The power switch in the flameout linkage electric control valve cuts off the power supply and also cuts off the power supply to the gas branch linkage electric control valve. The flameout protection is realized, and the gas leakage is prevented.
Under the state that all the gas stove plates are flameout, a gas pipe (D4) in the burner and a linked electric control valve (G7) of an associated gas branch pipe are in a closed state, and the gas branch pipe and the gas pipe have residual gas pressure, so that the burner cannot be ensured to burn. The ignition switch of the gas stove has the dual functions of switching on the ignition power supply and stove gas valve, when the ignition switch knob is pressed, the ignition switch is switched on the ignition power supply, and when the ignition needle ignites, the ignition power supply current passes through the electromagnetic coil in the stove flameout linkage electric control valve (G18), and simultaneously the gas valve and the power switch of the flameout linkage electric control valve are switched on, the electromagnetic field attracts the electrode armature, the electromagnetic field magnetic force compresses the electrode armature spring, the armature electrode is switched on the electrode contact of the power switch, and the power supply is switched on. Connecting a power switch and a connecting line of the associated gas branch pipe linkage electric control valve and a power supply, connecting the power switch with electromagnetic coils of the associated gas branch pipe, gas main pipe and gas main pipe linkage electric control valve which are connected in series, and starting the gas branch pipe, gas main pipe and gas main pipe linkage electric control valve, and starting the gas pipe for gas supply. The electric control valve for flameout of the stove plate and the associated gas pipe are linked, the ignition needle ignites the gas in the burner to burn, the thermocouple is burnt by the burning fire of the burner, the current is generated to keep the electric control valve for flameout of the stove plate to be powered on by the power switch of the electric control valve for flameout of the stove plate, the associated gas pipe is linked, the electric control valve for flameout of the stove plate is kept on to supply the gas, and the stove plate for gas is stably burned. When the gas stove plate is flameout or accidentally flameout, the thermocouple stops generating current, the burner flameout linkage electric control valve is closed, the connecting electrode of the power switch is also disconnected, and the power supply to the gas branch pipe linkage electric control valve is disconnected.
The distance between the gas stove plate and the associated gas branch pipe linkage electric control valve in the public kitchen is far, and the intelligent gas linkage safety system is required to be incorporated for monitoring, and the ignition power supply of the gas stove plate and the system power supply are required to be used. The gas stove plate applied to the household kitchen can ensure the control of the gas branch pipe linkage electric control valve by utilizing the built-in power supply of the gas stove plate. The dual flameout protection for preventing gas leakage is achieved by using the flameout linkage electric control valve of the gas stove plate and the linkage electric control valve of the gas branch pipe in a household kitchen.
A flameout protection circuit of the gas low-soup stove is formed by connecting a thermocouple (G13) and a flameout interlocking electric control valve (G9) in a hearth of the gas low-soup stove (G20). The flameout interlocking electric control valve of the gas low-soup stove consists of a normally closed electromagnetic valve, a gas pressure sensor (D18) and a power switch arranged in the flameout interlocking electric control valve. The flameout interlocking electric control valve body (D15) of the gas low-soup stove is fixed on the gas pipe in a sealing way through threads at two ends. The method comprises the steps that a fuel gas pressure sensor base is arranged in the outlet direction of a normally closed electromagnetic valve body of the flameout interlocking electric control valve, threads at two ends of the valve body are fixedly connected, the cross-sectional area of the flow of the threads is matched with that of a fuel gas pipe, the base of the fuel gas pressure sensor is arranged in the same direction of the installation of the electromagnetic valve on the valve body, a communication hole (D19) communicated with the valve body is formed in the center of the base, the fuel gas pressure sensor is screwed into a screw hole of the base to be in sealing connection, and the fuel gas pressure sensor measures the residual pressure of fuel gas in the fuel gas pipe through the communication hole of the valve body. The pressure signals detected by the gas pressure sensor are connected with the bus terminals (Z12) in one-to-one correspondence through the signal lines (Z13), and are connected with the input units (Z3) of the intelligent programming controller (Z1) in one-to-one correspondence through the bus terminals.
An electromagnet (D1), a gas valve port (D17) and a power switch and a connecting circuit are arranged in a flameout interlocking electric control valve (G9) of the gas low-soup stove burner. The flameout interlocking electric control valve is characterized in that the normally closed electromagnetic valve is provided with two coil binding posts (D7) connected with a thermocouple, and the two coil binding posts are connected with an electromagnetic coil (D10) of an electromagnet (D1) in the flameout interlocking electric control valve. The thermocouple is arranged beside the burner fire in the hearth of the low-soup stove, and the thermocouple wiring is connected with the electromagnetic coil of the normally-closed electromagnetic valve through the coil binding post. Two power switch electrodes (D5) are arranged in the flameout linkage electric control valve and are respectively connected with an electrode binding post (D8), one electrode binding post is connected with a power supply (Z15) and a coil binding post, and the other electrode binding post is connected with a linkage electric control valve (G7) power line of the gas branch pipe in series. The electromagnet consists of an electromagnetic coil and an iron core, wherein one end of a magnetic field at two ends of the electromagnet is provided with a gas valve, and the other end of the magnetic field is provided with a power switch. The electromagnetic coil is connected with the thermocouple through a coil binding post (D7) of the flameout interlocking electric control valve, current generated by the thermocouple flows through the electromagnetic coil of the electromagnet, the electromagnetic coil of the electromagnet and the iron core generate a magnetic field, one side of the formed magnetic field attracts a valve armature (D2), the magnetic force compresses a valve armature spring (D11) to pull a valve armature to pull a valve piston, a gas valve port (D17) is opened, and a gas pipe (G8) supplies gas to a gas pipeline of the burner, so that the burner is ensured to burn. The burner is flameout, the thermocouple stops generating current, the electromagnetic coil is powered off, the magnetic field disappears, the valve armature spring blocks the valve piston of the valve armature from blocking the gas valve port, and the gas is cut off. The other side of the magnetic field is provided with a power switch, the power switch consists of an electrode armature (D6) and a power switch electrode (D5) contact, the magnetic field attracts the electrode armature, the magnetic field compresses an electrode armature spring (D9), and the electrode armature is connected with the power switch electrode contact and is connected with a power supply. The electrode armature is in the actuation state, the electrode armature is connected with power switch electrode contacts on two sides of the electrode armature, a power connection line is kept to be electrified, the power switch is connected with a coil binding post through an electrode binding post (D8), one electrode binding post is connected with a power supply (Z15), the other electrode binding post is connected with a linkage electric control valve (G7) power line of a gas branch pipe in series, the power supply line is connected with a power supply in series through a linkage electric control valve coil of the control gas branch pipe, a linkage electric control valve power line of a gas main pipe and a power supply, the power switch is communicated with a gas branch pipe, a gas main pipe and a linkage electric control valve electromagnetic coil of the gas main pipe which are connected in series, the linkage electric control valve of the gas branch pipe, the gas main pipe and the gas main pipe is started, and the gas pipe is started for gas supply. When the burner is flameout or accidentally flameout, flame in the burner disappears, the temperature drops, current generated by a thermocouple in the burner also weakens and disappears, magnetic force generated by an electromagnetic coil drops, the elastic force of a valve armature spring and an electrode armature spring of the valve armature is larger than the magnetic force, the valve armature and the electrode armature cannot be continuously attracted, the valve armature spring of the valve armature pushes a valve piston to close a fuel gas valve port, fuel gas is closed to stop supplying, the electrode armature spring of the electrode armature rebounds to the electrode armature, a power switch electrode is disconnected, a circuit power supply is stopped, and a flameout linkage electric control valve of the burner is closed. The power switch in the flameout linkage electric control valve cuts off the power supply and also cuts off the power supply to the gas branch linkage electric control valve. The flameout protection is realized, and the gas leakage is prevented.
In order to ensure the control effect of thermocouple heat on the flameout linkage electric control valve (G9) of the gas stewing stove, the gas stewing stove (G21) needs a flameout protection circuit of the flameout linkage electric control valve formed by a thermocouple, a relay (G17) and a connecting circuit. The relay is a normally closed relay, the thermocouple is connected with a relay coil binding post (D7), and the thermoelectric current of the thermocouple ensures the switch of the relay. The relay is provided with a relay electrode (D12) which is internally provided with a communicated power supply and is connected with an electrode binding post (D8), one electrode binding post is connected with a power supply (Z15) and a coil binding post, and the other electrode binding post is connected with a power line of a linkage electric control valve (G7) of the gas branch pipe in series. The power switch of the relay electrode is connected in parallel with the power switch in the flameout interlocking electric control valve of the gas stew stove through the electrode binding post (D8), and the function of the connection backup of the power switch is achieved. When the current generated by the thermocouple in the burner flows through the electromagnetic coil of the relay electromagnet, the electromagnetic field magnetic force generated by the relay electromagnet (D1) compresses the valve armature spring (D13), the attracted switch armature (D14) is connected with the relay power electrode, the flameout interlocking electric control valve of the gas stewing stove is electrified to keep an on state, the relay power electrode is connected in series with the power supply circuit of the interlocking electric control valve of the gas branch pipe, the gas main pipe and the gas main pipe on the gas pipe, and keeps the on state of the interlocking electric control valve, so that the gas supply combustion is kept. When flameout or unexpected flameout occurs, the thermocouple stops generating current, the normally closed relay is powered off to disconnect the electrode, the flameout linkage electric control valve of the burner is closed, and the power supply to the linkage electric control valve of the gas branch pipe is also disconnected. The flameout protection is realized, and the gas leakage is prevented.
The flameout interlocking electric control valve (G9) of the burner of the gas cooking stove (G22) is characterized in that a high-temperature-resistant normally closed temperature control switch (G15) is arranged on the burner (G12) in the hearth of the gas cooking stove. The flameout protection circuit of the burner of the gas cooking stove consists of a flameout interlocking electric control valve, a normally closed temperature control switch and a connecting circuit. The normally closed temperature control switch is used as a power switch for controlling the flameout interlocking electric control valve of the gas cooking stove, and is arranged beside the fire of the burner in the hearth of the gas cooking stove. Two high-temperature resistant metal sheets of different metals which are not contacted with each other are arranged in the normally closed temperature control switch and are respectively connected with a power line (Z15) and a flameout interlocking electric control valve coil binding post (D8), and the normally closed temperature control switch power line is connected with the power switch in the flameout interlocking electric control valve of the gas cooking stove in parallel through the electrode binding post (D8) to play a role in connection backup. The normally closed temperature control switch in the burner is burnt and baked by the burner fire, the two high temperature resistant metal sheets are bent, the temperature reaches the preset temperature under the high temperature flame barbecue of the burner, the two high temperature resistant metal sheets of the temperature control switch are close to be connected with a power supply, the flameout linkage electric control valve is powered on to keep an on state, and the flameout linkage electric control valve is powered on through a coil binding post and a power line connected with the gas branch pipe, the gas main pipe and the gas main pipe in series, and the linkage electric control valve is in an on gas supply state. When flameout or accidental flameout occurs, the temperature control switch is turned off, the burner flameout linkage electric control valve is turned off, and a power supply line leading to the gas branch pipe linkage electric control valve is also turned off.
The flameout interlocking electric control power switch can also be composed of a light-operated sensor switch (D16), a flameout interlocking electric control valve (G9) and a connecting circuit in a matching way according to the structural requirement of the combustion equipment. The combustion equipment can be provided with a power switch controlled by a light control sensor to control flameout linkage, the light control sensor can be an infrared sensor switch and a circuit, the rear vertical plate of the gas cooking stove (G22) faces the cooking stove mouth, the light control sensor or the infrared sensor (D16) is arranged at a position higher than the cooking stove mouth, a light control sensor probe is arranged at a position which can directly observe the light intensity of the burner of the gas cooking stove, when the light intensity of the burner flame reaches a preset value, a light control sensor switch circuit is connected with a power line of the flameout linkage electric control valve, and the power switch in the flameout linkage electric control valve is connected to control the flameout linkage electric control valve to be opened. The power switch in the flameout linkage electric control valve is connected with the power lines connected in series with the linkage electric control valves on the gas branch pipe, the gas main pipe and the gas main pipe to be electrically opened, and the linkage electric control valve is in an opened gas supply state. When the burner is flameout or accidentally flameout, the light control sensor detects that the intensity of the light of the burner flame is lower than a preset value, the light control sensor turns off the power supply, and the flameout linkage electric control valve is turned off.
The linkage electric control valve applied to the gas branch pipe linkage electric control valve (G7), the gas main pipe linkage electric control valve (G5) and the gas main pipe linkage electric control valve (G3) consists of a normally closed electromagnetic valve or a normally closed electric valve, a gas pressure sensor (D18) and a connecting circuit. The linked electric control valve body (D15) is sealed and fixed on the gas pipe through threads at two ends. The gas pressure sensor is arranged in the direction of an outlet on a valve body of the linkage electric control valve, threads at two ends of the valve body which are fixedly connected and the cross section of the flow section are matched and sealed with a gas pipe, the base for installing the gas pressure sensor is arranged in the same direction of the valve body which is installed with the electromagnetic valve, a communication hole (D19) communicated with the valve body is arranged in the center of the base, the gas pressure sensor is screwed into a screw hole of the base to be in sealing connection, and the gas pressure sensor measures the gas pressure in the gas pipe through the valve body communication hole.
The linkage electric control valve is provided with a power line and a gas pressure signal passing signal line (Z13). The power line is connected with an electromagnetic coil of the linkage electric control valve through a coil binding post (D7), and the power line is connected with two power switch electrodes (D5) arranged in the linkage electric control valve through an electrode binding post (D8). The signal wire cable is internally provided with a flameout interlocking electric control power switch signal wire, a signal wire of an interlocking electric control valve switch and a gas pressure signal wire which are connected with the bus terminal (Z12) in a one-to-one correspondence manner, and are connected with the input unit (Z3) of the intelligent programming controller (Z1) in a one-to-one correspondence manner through the bus terminal.
The gas pipeline systems are all in tree connection, namely, a gas pipe (D4) of the associated parallel burner is communicated with a gas branch pipe (G8), the associated parallel gas branch pipe is communicated with a gas main pipe (G4), and the associated parallel gas main pipe is communicated with a gas main pipe (G1). In order to prevent and monitor the gas pipeline system, the gas pipeline system is connected with a tree flameout linkage control circuit which uses a flameout linkage control valve (G9) to control a linkage control valve on a gas pipe. The tree flameout linkage control circuit is connected with the linkage control valves that flameout linkage control valves are arranged on each burner, and the gas main pipe, the gas main pipe and the gas branch pipe are all provided with linkage control valves for automatically closing the gas pipe at the joint of the gas pipe, and the linkage control valves on the gas pipe are controlled by the flameout linkage control valves. And a gas branch pipe linkage electric control valve (G7) is arranged at the junction point of the gas pipes of the plurality of burners connected in parallel on the gas branch pipe and the branch pipe gas valve (G10) of the gas branch pipe. The gas main pipe linkage electric control valve (G5) is arranged at the junction point of the plurality of parallel gas branch pipes and the gas main pipe gas valve (G4). The gas main pipe linkage electric control valve (G3) is also arranged at the junction point of the gas main pipe and the gas valve (G2). The gas main pipe, the main pipe and the branch pipes are all provided with linkage electric control valves, and the gas pipelines of the burner are all provided with flameout linkage electric control valves. The power supply lines of flameout linkage electrically controlled valves of a plurality of burners of parallel pipelines on the same gas branch pipe are connected in parallel and are connected in series with the power supply lines of linkage electrically controlled valves of the gas branch pipe. The power supply lines of the linkage electric control valves of the plurality of gas branch pipes are connected in parallel, are connected in series with the power supply lines of the linkage electric control valves on the gas main pipes, are connected in parallel, are connected in series with the power supply lines of the linkage electric control valves at the joints on the gas main pipes, and are then connected in series with the power supply. The gas pipeline system and the flameout linkage control circuit system are increased or decreased according to actual needs.
When a burner ignites, an ignition switch (G16) power button or a gas stove ignition switch (G11) ignites the burner, simultaneously, the power supply circuit of the flameout linkage electric control valve of the burner is powered on, the power supply circuit of the linkage electric control valve connected in series with the power supply circuit of the flameout linkage electric control valve of the burner is powered on, the power supply circuit of the linkage electric control valve of the gas main pipe and the gas branch pipe is powered on, the linkage electric control valve of the gas main pipe and the gas main pipe is powered on, the gas pipe is kept in a gas supply state, the burner ignites and burns, and the power supply switch of the flameout linkage electric control valve and the linkage electric control valve power supply switch are kept in an on state. The flameout interlocking electric control valve of the burner keeps an open state, and a gas branch pipe, a gas main pipe and a power supply line of the interlocking electric control valve of the gas main pipe which are connected in series with the power supply line of the flameout interlocking electric control valve of the burner are electrified, and the interlocking electric control valve keeps an open state. The power supply circuits of flameout linkage electric control valves of other burners without ignition combustion on the same gas branch pipe are disconnected by the power supply switches of the flameout linkage electric control valves, and no current exists, so that the burner is in a closed state. When all burners on the gas branch pipes are flameout, flameout linkage electric control valves of all burners are powered off, power lines of linkage electric control valves of all gas branch pipes which are connected in series are powered off, and power lines of linkage electric control valves of all gas branch pipes, gas main pipes and gas main pipes are powered off, so that gas is cut off.
After the gas pipeline system respectively closes the linkage electric control valves according to the sequence of all closing control gas branch pipes, gas main pipes and gas main pipes of the flameout linkage electric control valves of the burner, the closed pipeline is closed by the closed linkage electric control valves at both ends in the closed pipeline, the original residual gas pressure is still maintained in the closed pipeline, a gas pressure sensor and a connecting circuit are arranged at the outlet end of the linkage electric control valve, the pressure change in the gas pipe is measured in real time, and sampling signals are transmitted to an intelligent programming controller, and the pressure change in the gas pipe is monitored, analyzed and calculated in real time. When the gas residual pressure on the independent pipe section is analyzed and calculated by the intelligent programming controller to change and exceeds a preset pressure value, an alarm signal and a remote wireless transmission device (Z9) can be sent out for remote alarm. The pressure increase indicates that the air inlet end linkage electric control valve is not sealed and air leakage, and the pressure decrease indicates that the gas pipe or the air outlet end flameout linkage electric control valve is air leakage. The intelligent programming controller output unit outputs control instructions to various external devices, display records are implemented according to preset programs, and an audible and visual alarm device (Z10) is controlled to give an audible and visual alarm, a remote wireless transmission device gives an alarm remotely, and ventilation equipment (Z7) for removing leaked fuel gas is started.
In order to improve the intelligent control function of the intelligent gas linkage safety system, the system is provided with an intelligent programming controller (Z1). The intelligent programming controller mainly comprises an intelligent programming controller power supply (Z4), a central processor (Z2), a memory (Z5), an input unit (Z3), an output unit (Z6) and the like. The intelligent programming controller power supply supplies power to each unit of the intelligent programming controller. The memory is used for storing system programs and application programs and has the functions of inputting, storing and memorizing the gas pipeline system control programs, and different pipeline system control programs can be edited and input. The input unit is a working condition signal input interface channel circuit of the intelligent gas linkage safety system for acquiring flameout linkage electric control valves, a gas pressure sensor and a gas monitoring alarm device (Z11). The gas pipeline system is connected with the bus terminal (Z12) in one-to-one correspondence through the signal line cable (Z13), and is connected with the input unit (Z3) of the intelligent programming controller (Z1) in one-to-one correspondence through the bus terminal. And providing working condition parameter signals such as all flameout linkage electric control valves, linkage electric control valve positions, switch states, gas pressure sensor positions, sampling measurement parameters, gas monitoring alarm device (Z11) sensor signals and the like for an intelligent programming controller central processor. The central processor is used for scanning, flameout and interlocking electric control valves, a gas pressure sensor and a gas monitoring alarm device sensor in a circulating way, transmitting working condition signals and detection sampling parameters to an input unit of the central processor, reading control programs preset in a gas pipeline one by one from a memory, analyzing and processing the control programs, and sending out execution program instructions through an output unit. The output unit outputs the execution instruction to the central processor, and executes the instruction of intelligent monitoring, display, recording, audible and visual alarm, remote alarm and starting the ventilation equipment for removing the leaked fuel gas. And a gas monitoring alarm device (Z11) and an audible and visual alarm device (Z10) are arranged in each gas workroom, and when the gas in the monitoring room has leakage or insufficient gas combustion, the gas monitoring alarm device is provided with a gas pressure sensor and an intelligent control circuit for monitoring and analyzing the gas sensor, and the configured audible and visual alarm device is started to directly alarm and is transmitted to an intelligent programming controller. All flameout interlocking electric control valves, gas pressure sensors and gas monitoring alarm device detection signals installed on a gas pipeline system are connected with a bus terminal (Z12) in one-to-one correspondence through a signal wire cable (Z13), and are connected with an intelligent programming controller input unit in one-to-one correspondence through the bus terminal, so that working condition sampling signals such as the positions, the on-off states, the gas pressure sensor positions and measurement parameters of all flameout interlocking electric control valves, the interlocking electric control valves are provided for an intelligent programming controller central processor, intelligent monitoring, displaying, recording, audible and visual alarm are implemented, ventilation equipment for removing leaked gas is started, the position where gas leakage occurs is judged and analyzed, and reliable technical basis is provided for finding fault points. The system display (Z8) displays the working condition of the intelligent gas linkage safety system in real time, and the remote wireless transmission device (Z9) transmits the working condition of the intelligent gas linkage safety system in real time. An intelligent gas linkage safety system consisting of a flameout linkage electric control valve, a gas pressure sensor and an intelligent programming controller is used for monitoring a gas pipeline system from time to time. Even if the gas pipeline leaks gas, the linkage electric control valve and the flameout linkage electric control valve at the upper end and the lower end are in a closed state, so that only the gas in the pipeline leaks, a large amount of gas cannot leak, unmanned monitoring is implemented, and the safety of a pipeline system is ensured.
Claims (7)
1. A flameout interlock control circuit arranged on a gas pipeline system is characterized in that flameout interlock control valves are arranged on burner equipment of the gas pipeline system, the interlock control valves are arranged on the gas pipeline, and the flameout interlock control circuit of the interlock control valves is controlled by utilizing the serial connection of the flameout interlock control valves. The method is characterized in that: the flameout linkage electric control valve is arranged on the burner, the linkage electric control valve is arranged on the gas pipe, a power supply on the flameout linkage control circuit is connected with the flameout linkage electric control valve in series, the flameout linkage electric control valve is connected with the linkage electric control valve on the related gas pipe in series, and the flameout linkage electric control valve switch controls the linkage electric control valve switch on the related gas pipe through the flameout linkage control circuit.
2. The flameout interlock control circuit of claim 1 wherein: the flameout linkage control valve on the flameout linkage control circuit is connected with the flame detector arranged on the burner, and the flameout linkage control valve is connected with the linkage control valve on the related gas pipe in series.
3. The flameout interlock control circuit of claim 1 wherein: the flame detector of the burner is used for controlling the switch of the flameout linkage electric control valve on the flameout linkage control circuit, and the switch of the flameout linkage electric control valve is connected with the linkage electric control valve on the related gas pipe in series.
4. The flameout interlock control circuit of claim 1 wherein: the gas pipeline is provided with a gas pressure sensor, the gas pipeline pressure is monitored when the gas pipeline is closed, and the residual pressure change in the gas pipeline is monitored and analyzed in real time by the intelligent programming controller.
5. A power switch is arranged in a flameout linkage electric control valve, a burner flame detector controls the flameout linkage electric control valve and the power switch to be opened and closed, and the flameout linkage electric control valve and the associated linkage electric control valve are connected in series to form a flameout linkage control circuit. The method is characterized in that: the switch of the electromagnet of the flameout linkage electric control valve is controlled by a burner flame detector, one side of the electromagnet magnetic field in the flameout linkage electric control valve is provided with a gas valve, the other side of the electromagnet magnetic field is provided with a power switch, the power switch is connected with the linkage electric control valve arranged on the related gas pipe in series, and the gas valve controls the on-off of the gas pipe.
6. The flameout linkage electrically controlled valve of claim 5, wherein: the flameout linkage electric control valve detects the flame burning state of the burner by using a burner flame detector and controls the switch of the flameout linkage electric control valve.
7. The flameout linkage electrically controlled valve of claim 5, wherein: the base of the gas pressure sensor is arranged on the valve body, a communication hole communicated with the valve body is arranged in the center of the base, and the gas pressure sensor measures the residual pressure of the gas in the gas pipe through the valve body communication hole and is connected with the gas monitoring alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104941.4A CN116518302A (en) | 2022-01-22 | 2022-01-22 | Flameout linkage control circuit and flameout linkage electric control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104941.4A CN116518302A (en) | 2022-01-22 | 2022-01-22 | Flameout linkage control circuit and flameout linkage electric control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116518302A true CN116518302A (en) | 2023-08-01 |
Family
ID=87406954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210104941.4A Pending CN116518302A (en) | 2022-01-22 | 2022-01-22 | Flameout linkage control circuit and flameout linkage electric control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116518302A (en) |
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2022
- 2022-01-22 CN CN202210104941.4A patent/CN116518302A/en active Pending
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