Combustible gas ignition valve device with risk warning and linkage control functions

Abstract

This invention relates to the field of monitoring and includes a combustible gas ignition valve device with risk warning and linkage control functions. The purpose of this invention is to address the problem that traditional gas ignition valve boxes cannot promptly transmit accident information to personnel when a gas leak occurs, increasing the risk of further accidents. The combustible gas detection device is used to detect in real time whether the concentration and temperature of the combustible gas in the ignition valve box simultaneously reach their respective danger values. If so, it simultaneously sends alarm information to the alarm device on this ignition valve box, alarm devices on ignition valve boxes within a preset range, and the monitoring center, and controls the inlet valve in the ignition valve box to close. If not, it determines whether the concentration and temperature of the combustible gas in the detection ignition valve box simultaneously reach their respective warning values. If so, it sends alarm information to the alarm device on this ignition valve box and controls the ventilation device to operate; if not, it determines that no combustible gas leak has occurred in the ignition valve box. This invention is used to monitor whether a combustible gas leak has occurred in an ignition valve box.

Description

Technical Field

[0001] This invention relates to the field of monitoring, specifically to the monitoring of point valve boxes. Background Technology

[0002] Existing valve box technology primarily focuses on functional applications, including flow control and pressure monitoring. However, as the terminal equipment for the use of combustible gases, combustible gas valve boxes lack real-time leak monitoring, automatic ventilation systems, and remote data transmission capabilities, failing to meet the demands of modern intelligent management and limiting control capabilities in emergency situations. When a gas leak occurs in a traditional gas valve box, the incident information cannot be promptly transmitted to personnel, leading to delayed response and increasing the risk of further accidents. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that traditional gas valve boxes cannot transmit accident information to staff in a timely manner when a gas leak occurs, thus increasing the risk of accidents. This invention proposes a combustible gas valve device with risk warning and linkage control functions.

[0004] A combustible gas ignition valve device with risk warning and linkage control functions, the combustible gas ignition valve device includes a valve box, a combustible gas detection device, an alarm device and a ventilation device;

[0005] The inlet end of the valve box is connected to the combustible gas source end, and the outlet end of the valve box is connected to the gas-using equipment end; the combustible gas detection device is embedded in the side wall of the valve box, the alarm device is embedded in the combustible gas detection device, and the ventilation device is set on the top of the valve box.

[0006] A combustible gas detection device is used to detect in real time whether the concentration and temperature of combustible gas in the valve box simultaneously reach their respective danger values.

[0007] If so, simultaneously send alarm information to the alarm device on this valve box, the alarm devices on valve boxes within the preset range, and the monitoring center, and control the air intake valve in the valve box to close.

[0008] If not, determine whether the concentration and temperature of combustible gas in the valve box at the detection point have simultaneously reached their respective warning values. If yes, send an alarm message to the alarm device on this valve box and control the operation of the ventilation device. If no, determine that no combustible gas leak has occurred in the valve box.

[0009] Preferably, the valve box includes an intake valve, an intake pipe, a flashback arrestor, a dust screen, a rectangular box, a pressure gauge, a manifold, branch pipes, branch pipe ball valves, branch pipe flame arrestors, and hoses;

[0010] The intake pipe extends from the top of the rectangular box. The intake end of the intake pipe is connected to the combustible gas source end, and the outlet end of the intake pipe is connected to the manifold inlet. An intake valve is installed on the intake pipe near the intake end, and a backfire preventer is installed on the intake pipe near the intake end.

[0011] The pressure gauge is installed on the manifold, the dustproof net is located on the top of the rectangular box, one end of the branch pipe is connected to the manifold outlet, the other end of the branch pipe is connected to one end of the branch pipe ball valve, the other end of the branch pipe ball valve is connected to one end of the branch pipe flame arrester, the other end of the branch pipe flame arrester is connected to one end of the hose, and the other end of the hose is connected to the gas-using equipment.

[0012] Preferably, the intake valve is implemented using an electric ball valve at the intake port.

[0013] Preferably, the combustible gas detection device includes a control panel housing, an embedded processor, a temperature sensor, a concentration sensor, a storage module, and a communication module;

[0014] The control panel housing is located on the side wall of the valve box; the temperature sensor and concentration sensor are both embedded in the back of the control panel housing and are embedded inside the valve box; the embedded processor, storage module and communication module are all located inside the control panel housing.

[0015] A temperature sensor is used to detect the temperature of combustible gas in the valve box and transmit the data to the processing module and the storage module.

[0016] A concentration sensor is used to detect the concentration of combustible gas in the valve box and transmit the data to the processing module and the storage module.

[0017] The storage module is used to store the temperature and concentration of combustible gases in real time.

[0018] An embedded processor is used to detect in real time whether the concentration and temperature of combustible gas in the valve box simultaneously reach their respective danger values.

[0019] If so, alarm information is simultaneously sent to the alarm device on this valve box, to the alarm devices on valve boxes within the preset range and to the monitoring center via the communication module, and the air intake valve in the valve box is controlled to close.

[0020] If not, determine whether the concentration and temperature of combustible gas in the detection point valve box have simultaneously reached their respective warning values. If yes, send an alarm message to the alarm device on this valve box and control the operation of the ventilation device. If no, determine that there is no combustible gas leak in the valve box.

[0021] Preferably, the combustible gas detection device further includes a start button, a reset button, and a USB interface;

[0022] The power button, reset button, and USB port are all located on the front surface of the control panel housing.

[0023] The start button is used to activate the processing module after startup.

[0024] The reset button is used to reset the embedded processor after the combustible gas leak fault is cleared, so that the embedded processor can return to the detection state.

[0025] The USB interface is used to export the temperature and concentration data stored in the storage module.

[0026] Preferably, the combustible gas detection device further includes a filter device;

[0027] A filter is installed on the concentration sensor probe.

[0028] Preferably, the alarm device includes a buzzer and an alarm light;

[0029] The alarm light is located on top of the control panel housing, and the buzzer is located inside the control panel housing.

[0030] When the embedded processor detects that the concentration and temperature of combustible gas in the valve box simultaneously reach their respective danger values, it drives the buzzer to sound at a preset high frequency and simultaneously drives the alarm light to illuminate red; when it detects that the concentration and temperature of combustible gas in the valve box simultaneously reach their respective warning values, it drives the buzzer to sound at a preset low volume and simultaneously drives the alarm light to illuminate yellow.

[0031] Preferably, the ventilation device includes a fan; the combustible gas detection device also includes a display screen and operation buttons;

[0032] The fan is located at the top of the valve box;

[0033] The operation buttons are used to send button signals to the running fan;

[0034] The embedded processor is also used to control the fan to run at a preset speed when the concentration and temperature of combustible gas in the valve box simultaneously reach their respective warning values. It is also used to receive a button signal, adjust the current preset speed of the fan, and send the preset speed or the adjusted speed to the display screen for display.

[0035] The beneficial effects of this invention are:

[0036] Compared to traditional valve box designs, this invention incorporates concentration and temperature sensors to monitor the gas concentration and temperature within the valve box in real time. When a leakage risk is detected, it promptly issues its own alarm and simultaneously sends alarms to the monitoring center and surrounding combustible gas valve devices. This allows for early warning and appropriate control measures to be taken in the early stages of an accident, preventing the accident from escalating.

[0037] This invention features multi-level alarm and automatic linkage functions. It can automatically adjust the fan speed, close valves, and trigger alarm linkage of adjacent valve boxes according to the degree of gas leakage, thereby reducing risks in a timely manner and quickly notifying staff, thus improving the efficiency of accident response.

[0038] This invention supports data upload and local storage functions, and can be connected to a centralized control unit to achieve remote monitoring, data statistics and historical analysis, which helps in risk management and security optimization.

[0039] This invention is applicable to pipeline usage points for combustible gases such as coal gas, natural gas, and acetylene, and has excellent risk control functions. Attached Figure Description

[0040] Figure 1 This is an overall structural diagram of a combustible gas ignition valve device with risk warning and linkage control functions.

[0041] Figure 2 This is a structural diagram of a combustible gas detection device;

[0042] Figure 3 A schematic diagram of a combustible gas ignition valve device with risk warning and linkage control functions;

[0043] Figure 4 Display content images on the screen;

[0044] Figure 5 This is a control flowchart for a combustible gas ignition valve device with risk warning and linkage control functions. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0047] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0048] Example:

[0049] Combination Figures 1 to 3 This embodiment describes a combustible gas ignition valve device with risk warning and linkage control functions. The combustible gas ignition valve device includes a valve box 1, a combustible gas detection device 2, an alarm device 3, and a ventilation device 4.

[0050] The inlet end of the valve box 1 is connected to the combustible gas source end, and the outlet end of the valve box 1 is connected to the gas-using equipment end; the combustible gas detection device 2 is embedded in the side wall of the valve box 1, the alarm device 3 is embedded in the combustible gas detection device 2, and the ventilation device 4 is set on the top of the valve box 1.

[0051] Combustible gas detection device 2 is used to detect in real time whether the concentration and temperature of combustible gas in the valve box 1 simultaneously reach their respective danger values;

[0052] If so, alarm information is sent simultaneously to the alarm device 3 on this valve box 1, the alarm device 3 on the valve box 1 within the preset range, and the monitoring center, and the air intake valve 1-1 in the valve box 1 is controlled to close.

[0053] If not, determine whether the concentration and temperature of combustible gas in the detection point valve box 1 have reached their respective warning values ​​simultaneously. If yes, send an alarm message to the alarm device 3 on this point valve box 1 and control the operation of the ventilation device 4 at the same time. If no, determine that no combustible gas leak has occurred in the point valve box 1.

[0054] Specifically, when a combustible gas leak is detected at 1-5000 ppm or the internal temperature of the valve box reaches 40℃, the yellow alarm light flashes, the buzzer sounds an alarm (frequency set to 2-3kHz, volume set to 70-85dB), and the fan starts to exhaust the combustible gas at a speed of 1750 RPM. During use, when the leak threshold exceeds 5000 ppm, the light turns red, the buzzer alarm value increases (frequency set to 4kHz, volume set to 85-95dB), the fan accelerates ventilation and exhaust (fan speed must reach 3580 RPM), and wireless communication is activated. The module transmits alarm signals to the monitoring center and adjacent valve boxes. Upon receiving the linkage signal, the adjacent valve boxes will activate their own safety protection mechanisms: a yellow alarm light will flash, a buzzer will sound (frequency set to 2-3kHz, volume set to 70-85dB), and a fan will start to extract combustible gas at a speed of 1750RPM. When the light is green, the equipment is operating normally; when the light is blue, the equipment is malfunctioning. This malfunction information will be displayed on the control panel screen, prompting for inspection and maintenance to ensure normal monitoring operation. All alarm information is transmitted to the monitoring center wirelessly.

[0055] When the mass of combustible gas is greater than that of air, the fan is positioned on the lower exterior of the valve box. The partition between the valve box and the fan has multiple circular holes to enhance gas exhaust. The concentration sensor is located inside the lower part of the valve box for better monitoring of gas leaks.

[0056] Further details on the structure of valve box 1:

[0057] The valve box 1 includes an intake valve 1-1, an intake pipe 1-2, a flashback arrestor 1-3, a dust screen 1-4, a rectangular box 1-5, a pressure gauge 1-7, a manifold 1-8, a branch pipe 1-9, a branch pipe ball valve 1-10, a branch pipe flame arrestor 1-6, and a hose.

[0058] The intake pipe 1-2 extends from the top of the rectangular box 1-5. The intake end of the intake pipe 1-2 is connected to the combustible gas source end, and the outlet end of the intake pipe 1-2 is connected to the inlet of the manifold 1-8. An intake valve 1-1 is installed on the intake pipe 1-2 near the intake end of the intake pipe 1-2, and a flashback arrestor 1-3 is installed on the intake pipe 1-2 near the intake end of the intake pipe 1-2.

[0059] Pressure gauge 1-7 is installed on manifold 1-8. Dustproof net 1-4 is located on top of rectangular box 1-5. One end of branch pipe 1-9 is connected to the outlet of manifold 1-8, and the other end of branch pipe 1-9 is connected to one end of branch pipe ball valve 1-10. The other end of branch pipe ball valve 1-10 is connected to one end of branch pipe flame arrester 1-6. The other end of branch pipe flame arrester 1-6 is connected to one end of hose, and the other end of hose is connected to the gas-using equipment.

[0060] Specifically, rectangular boxes 1-5 are made of stainless steel with a wall thickness between 2mm and 5mm. The box size is determined according to the type of combustible gas and the number of branch pipes. Taking a three-branch pipe valve box with an outer diameter of 32mm as an example, the box size is 400mm x 300mm x 450mm.

[0061] The flashback arrestor is a dry flashback arrestor with multiple layers of metal mesh filter elements inside its structure. The diameter of the metal mesh filter elements is selected according to MESG (Maximum Experimental Safe Gap), and the material is selected from stainless steel or copper-nickel alloy to ensure the flame arresting effect.

[0062] Further specify the type of intake valve 1-1: intake valve 1-1 is implemented using an electric ball valve at the intake port.

[0063] Specifically, the valve body, valve plate, and valve stem of the inlet electric ball valve are all made of stainless steel. Depending on the specifications of the inlet pipe, the nominal diameter setting range is DN08-DN100. Taking a pipe outer diameter of 32mm as an example, an electric ball valve with a nominal diameter of DN25 should be selected. The actuator of the electric valve should be equipped with a local / remote control switch.

[0064] The composition of a combustible gas detection device 2 is given as follows:

[0065] The combustible gas detection device 2 includes a control panel housing 2-1, an embedded processor 2-2, a temperature sensor 2-3, a concentration sensor 2-4, a storage module, and a communication module;

[0066] The control panel housing 2-1 is located on the side wall of the valve box 1; the temperature sensor 2-3 and the concentration sensor 2-4 are both embedded in the back of the control panel housing 2-1, and the temperature sensor 2-3 and the concentration sensor 2-4 are embedded inside the valve box 1; the embedded processor 2-2, the storage module and the communication module are all located inside the control panel housing 2-1.

[0067] Temperature sensors 2-3 are used to detect the temperature of combustible gas in valve box 1 and transmit the data to the processing module and storage module.

[0068] Concentration sensors 2-4 are used to detect the concentration of combustible gas in valve box 1 and transmit the data to the processing module and storage module.

[0069] The storage module is used to store the temperature and concentration of combustible gases in real time.

[0070] Embedded processor 2-2 is used to detect in real time whether the concentration and temperature of combustible gas in valve box 1 simultaneously reach their respective danger values.

[0071] If so, alarm information is simultaneously sent to the alarm device 3 on this valve box 1, and to the alarm device 3 on the valve box 1 within the preset range and the monitoring center via the communication module, and the air intake valve in the valve box 1 is controlled to close.

[0072] If not, determine whether the concentration and temperature of combustible gas in the detection point valve box 1 have reached their respective warning values ​​simultaneously. If yes, send an alarm message to the alarm device 3 on this point valve box 1 and control the operation of the ventilation device 4 at the same time. If no, determine that there is no combustible gas leakage in the point valve box 1.

[0073] Specifically, the monitoring data and alarm events are uploaded to the monitoring center in real time, and stored in the local storage module. The system also periodically transmits status information to the monitoring center when not in alarm mode to ensure data continuity.

[0074] The composition of the combustible gas detection device 2 is further defined as follows: it also includes a start button 2-5, a reset button 2-6, and a USB interface 2-7;

[0075] The power button 2-5, reset button 2-6, and USB interface 2-7 are all located on the front surface of the control panel housing 2-1.

[0076] Start buttons 2-5 are used for power-on startup, after which the processing module starts working.

[0077] The reset button 2-6 is used to reset the embedded processor 2-2 after the combustible gas leak fault is cleared, so that the embedded processor 2-2 returns to the detection state.

[0078] USB ports 2-7 are used to export temperature and concentration data stored in the storage module.

[0079] The composition of the combustible gas detection device 2 is further defined as follows: it also includes filter devices 2-8;

[0080] A filter device 2-8 is installed on the concentration sensor 2-4 probe.

[0081] The composition of the alarm device 3 is further defined as follows: it includes a buzzer 3-1 and an alarm light 3-2;

[0082] The alarm light 3-2 is located above the control panel housing 2-1, and the buzzer 3-1 is located inside the control panel housing 2-1.

[0083] When the embedded processor 2-2 detects that the concentration and temperature of combustible gas in the valve box 1 simultaneously reach their respective danger values, it drives the buzzer 3-1 to sound at a preset high frequency and simultaneously drives the alarm light 3-2 to light up red; when the concentration and temperature of combustible gas in the valve box 1 simultaneously reach their respective warning values, it drives the buzzer 3-1 to sound at a preset low volume and simultaneously drives the alarm light 3-2 to light up yellow.

[0084] The composition of the ventilation device 4 is further defined as follows: it includes a fan;

[0085] The combustible gas detection device 2 also includes a display screen 2-9 and operation buttons 2-10;

[0086] The fan is located at the top of valve box 1;

[0087] Operation buttons 2-10 are used to send button signals to the running fan;

[0088] The embedded processor 2-2 is also used to control the fan to run at a preset speed when the concentration and temperature of combustible gas in the valve box 1 are detected to reach their respective warning values ​​at the same time. It is also used to receive a button signal, adjust the current preset speed of the fan, and send the preset speed or the adjusted speed to the display screen 2-9 for display.

[0089] Specifically, the ventilation system includes a fan located on the upper inside of the rectangular enclosure, below the dust filter. The fan is flame-retardant and explosion-proof, and different fan specifications are selected according to the size of the valve box. The fan speed is multi-speed adjustable, with different speeds used depending on the flammable gas leak situation. The fan speed can also be adjusted using the control panel buttons.

[0090] like Figure 4 As shown, the control panel display screen shows information including: date, combustible gas concentration, temperature, fan speed, equipment status, and setting options.

[0091] The operating procedure for combustible gas ignition valve devices with risk warning and linkage control functions is as follows:

[0092] Step 1: After the system is powered on, the combustible gas ignition valve box begins its self-test process, including monitoring of hardware such as sensors, communication modules, fans, and alarm devices. When an abnormality is detected during the equipment's self-test or operation (such as sensor failure, communication module malfunction, fan failure, or data transmission problem), the alarm light will turn blue, and the fault information will be displayed on the control panel.

[0093] Step 2: After initialization, the equipment is in normal condition, the alarm light is green, and each sensor starts monitoring. The monitoring module will collect data such as gas concentration and temperature in the valve box in real time.

[0094] Step 3: The concentration sensor and temperature sensor continuously collect environmental data and upload it to the embedded processor. The system is equipped with multi-level alarm thresholds, such as warning values ​​and danger values ​​for gas concentration and temperature.

[0095] Step 4: If the concentration and temperature of combustible gas reach dangerous levels, the alarm light will turn red, the buzzer will sound continuously at a high volume, the fan will turn on to the preset level and send an alarm signal to the monitoring center; the system will automatically link with the surrounding valve boxes to issue a warning, prompting personnel in the nearby area to evacuate, and triggering the emergency shutdown of the valves of the corresponding pipelines.

[0096] Step 5: If the flammable gas concentration and temperature have not reached the danger level, but the gas concentration and temperature have reached the set warning value, the alarm light will flash yellow, and the buzzer will sound at a low frequency to remind personnel that there may be a minor leak. The system will also activate the ventilation system, turning the fan speed to the preset level to accelerate gas diffusion and reduce the leak concentration.

[0097] Step Six: After the fault is cleared, staff can reset the system via the control panel. The system will return to normal monitoring status. If the alarm signal is not cleared, the system will continue to activate the alarm and fan until the concentration drops to a safe range.

[0098] A blue alarm light indicates a hardware or software malfunction within the system. When the device detects an anomaly during self-testing or operation (such as sensor failure, communication module malfunction, fan failure, or data transmission problems), the blue alarm light will illuminate, and the fault information will be displayed on the control panel for quick troubleshooting and maintenance. Once the fault is repaired or the system is reset, the blue alarm light will automatically turn off, indicating that the system has returned to normal.

[0099] When the gas concentration is detected to be below the alarm threshold and all functions remain normal, the alarm light will turn green, indicating that the equipment is operating normally and no further action is required.

[0100] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A combustible gas ignition valve device with risk warning and linkage control functions, characterized in that, The combustible gas ignition device includes a ignition valve box (1), a combustible gas detection device (2), an alarm device (3), and a ventilation device (4); The inlet end of the valve box (1) is connected to the combustible gas source end, and the outlet end of the valve box (1) is connected to the gas-using equipment end; the combustible gas detection device (2) is embedded in the side wall of the valve box (1), the alarm device (3) is embedded in the combustible gas detection device (2), and the ventilation device (4) is set on the top of the valve box (1). Combustible gas detection device (2) is used to detect in real time whether the concentration and temperature of combustible gas in the valve box (1) simultaneously reach their respective danger values; If so, alarm information is sent to the alarm device (3) on this valve box (1), the alarm device (3) on the valve box (1) within the preset range and the monitoring center, and the air intake valve (1-1) in the valve box (1) is controlled to close. If not, determine whether the concentration and temperature of combustible gas in the detection point valve box (1) have reached their respective warning values ​​at the same time. If yes, send an alarm message to the alarm device (3) on this point valve box (1) and control the ventilation device (4) to operate at the same time. If no, determine that no combustible gas leakage has occurred in the point valve box (1).

2. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 1, characterized in that, The valve box (1) includes an intake valve (1-1), an intake pipe (1-2), a flashback arrestor (1-3), a dust screen (1-4), a rectangular box (1-5), a pressure gauge (1-7), a manifold (1-8), a branch pipe (1-9), a branch pipe ball valve (1-10), a branch pipe flame arrestor (1-6), and a hose; An intake pipe (1-2) extends from the top of a rectangular box (1-5). The intake end of the intake pipe (1-2) is connected to the combustible gas source end, and the outlet end of the intake pipe (1-2) is connected to the inlet of the manifold (1-8). An intake valve (1-1) is installed on the intake pipe (1-2) near the intake end of the intake pipe (1-2), and a backfire preventer (1-3) is installed on the intake pipe (1-2) near the intake end of the intake pipe (1-2). The pressure gauge (1-7) is installed on the manifold (1-8), the dust screen (1-4) is located on the top of the rectangular box (1-5), one end of the branch pipe (1-9) is connected to the outlet of the manifold (1-8), the other end of the branch pipe (1-9) is connected to one end of the branch pipe ball valve (1-10), the other end of the branch pipe ball valve (1-10) is connected to one end of the branch pipe flame arrester (1-6), the other end of the branch pipe flame arrester (1-6) is connected to one end of the hose, and the other end of the hose is connected to the gas-using equipment.

3. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 2, characterized in that, The intake valve (1-1) is implemented using an electric ball valve at the intake port.

4. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 1, characterized in that, The combustible gas detection device (2) includes a control panel housing (2-1), an embedded processor (2-2), a temperature sensor (2-3), a concentration sensor (2-4), a storage module, and a communication module; The control panel housing (2-1) is located on the side wall of the valve box (1); the temperature sensor (2-3) and the concentration sensor (2-4) are both embedded in the back of the control panel housing (2-1), and the temperature sensor (2-3) and the concentration sensor (2-4) are embedded inside the valve box (1); the embedded processor (2-2), the storage module and the communication module are all located inside the control panel housing (2-1); Temperature sensors (2-3) are used to detect the temperature of combustible gas in the valve box (1) and transmit the data to the processing module and the storage module. Concentration sensors (2-4) are used to detect the concentration of combustible gas in the valve box (1) and transmit the data to the processing module and the storage module. The storage module is used to store the temperature and concentration of combustible gases in real time. An embedded processor (2-2) is used to detect in real time whether the concentration and temperature of combustible gas in the valve box (1) simultaneously reach their respective danger values; If so, alarm information is sent to the alarm device (3) on this valve box (1), the alarm device (3) on the valve box (1) within the preset range and the monitoring center through the communication module, and the air intake valve in the valve box (1) is controlled to close. If not, determine whether the concentration and temperature of combustible gas in the detection point valve box (1) have reached their respective warning values ​​at the same time. If yes, send an alarm message to the alarm device (3) on this point valve box (1) and control the ventilation device (4) to operate at the same time. If no, determine that there is no combustible gas leakage in the point valve box (1).

5. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 4, characterized in that, The combustible gas detection device (2) also includes a start button (2-5), a reset button (2-6), and a USB interface (2-7); The power button (2-5), reset button (2-6), and USB port (2-7) are all located on the front surface of the control case (2-1); Start buttons (2-5) are used to activate the processing module after startup; The reset button (2-6) is used to reset the embedded processor (2-2) to the detection state after the combustible gas leak fault is cleared. USB interfaces (2-7) are used to export temperature and concentration data stored in the storage module.

6. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 4, characterized in that, The combustible gas detection device (2) also includes a filter device (2-8); A filter device (2-8) is installed on the concentration sensor (2-4) probe.

7. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 4, characterized in that, The alarm device (3) includes a buzzer (3-1) and an alarm light (3-2); The alarm light (3-2) is located above the control panel housing (2-1), and the buzzer (3-1) is located inside the control panel housing (2-1); When the embedded processor (2-2) detects that the concentration and temperature of combustible gas in the valve box (1) simultaneously reach their respective danger values, it drives the buzzer (3-1) to sound at a preset high frequency and simultaneously drives the alarm light (3-2) to light up red; when the concentration and temperature of combustible gas in the valve box (1) simultaneously reach their respective warning values, it drives the buzzer (3-1) to sound at a preset low volume and simultaneously drives the alarm light (3-2) to light up yellow.

8. The combustible gas ignition valve device with risk warning and linkage control functions according to claim 5, characterized in that, The ventilation device (4) includes a fan; the combustible gas detection device (2) also includes a display screen (2-9) and operation buttons (2-10); The fan is located at the top of the valve box (1); Operation buttons (2-10) are used to send button signals to the running fan; The embedded processor (2-2) is also used to control the fan to run at a preset speed when the concentration and temperature of combustible gas in the valve box (1) are detected to reach their respective warning values ​​at the same time. It is also used to receive the button signal, adjust the current preset speed of the fan, and send the preset speed or the adjusted speed to the display screen (2-9) for display.

Images