Fuel gas stop valve and ventilation equipment integrated control box and fuel gas system

Abstract

The utility model discloses a fuel gas shut-off valve and ventilation equipment integrated control box and a fuel gas system, the fuel gas shut-off valve and ventilation equipment integrated control box comprises a fuel gas alarm control assembly used for detecting the fuel gas concentration of the surrounding environment of the fuel gas shut-off valve and ventilation equipment integrated control box, and when the fuel gas concentration is detected to be higher than an early warning value, the fuel gas alarm control assembly gives an alarm; warning information is sent out, and an alarm control signal is output; the input end of the gas cut-off valve control circuit is connected with the output end of the gas alarm control assembly, the output end of the gas cut-off valve control circuit is used for being connected with a gas cut-off valve, and the gas cut-off valve control circuit is used for controlling the gas cut-off valve to cut off the gas source when receiving the alarm control signal; the input end of the ventilation equipment control circuit is connected with the output end of the gas alarm control assembly, the output end of the ventilation equipment control circuit is used for being connected with ventilation equipment, and the ventilation equipment control circuit is used for controlling the ventilation equipment to work when receiving the alarm control signal. According to the utility model, the problem of complex installation and connection of the gas and ventilation control box is solved.

Description

Technical Field

[0001] The utility model relates to the field of gas safety control, and particularly relates to an integrated control box for a gas cut-off valve and a ventilation device, as well as a gas system. Background Technique

[0002] Gas is a clean and efficient energy source that brings convenience to our lives. However, gas is also flammable and explosive. Especially in industrial and commercial users such as the catering industry, where there is a large flow of people and many gas-using devices, if gas leakage is not detected and properly handled in a timely manner, safety accidents such as explosions and fires may occur. Correct installation and use of a combustible gas alarm controller can timely give an early warning when gas leakage occurs, reminding the staff to take effective safety measures, which can avoid accidents and enhance the safety guarantee of using gas.

[0003] Currently, the installation and connection of the control box for gas are complex. When the combustible gas alarm controller detects the concentration of combustible gas, it is necessary to close the emergency cut-off valve and start the ventilation facility at the same time. This requires three sets of independent devices to be connected to each other to achieve linkage. Some combustible gas alarm controllers have only one set of output controls and cannot directly control the ventilation facility equipment. It needs to be connected in series with an electromagnetic gas emergency cut-off valve for control, increasing the complexity of the control circuit. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the purpose of the present utility model is to provide an integrated control box for a gas cut-off valve and a ventilation device, as well as a gas system, so as to solve the problem of complex installation and connection of the gas and ventilation control box.

[0005] The technical solution of the present utility model is as follows:

[0006] An integrated control box for a gas cut-off valve and a ventilation device, comprising:

[0007] A gas alarm control component, which is used to detect the gas concentration in the surrounding environment of the integrated control box for the gas cut-off valve and the ventilation device, and when the detected gas concentration is higher than the warning value, it issues a warning message and outputs an alarm control signal;

[0008] A gas cut-off valve control circuit, the input end of the gas cut-off valve control circuit is connected to the output end of the gas alarm control component, the output end of the gas cut-off valve control circuit is used to connect to a gas cut-off valve, and the gas cut-off valve control circuit is used to control the gas cut-off valve to cut off the gas source when receiving the alarm control signal;

[0009] A ventilation equipment control circuit is provided, wherein the input terminal of the ventilation equipment control circuit is connected to the output terminal of the gas alarm control component, the output terminal of the ventilation equipment control circuit is used to connect to the ventilation equipment, and the ventilation equipment control circuit is used to control the ventilation equipment to work when it receives the alarm control signal.

[0010] Optionally, the gas alarm control component includes:

[0011] Alarm;

[0012] A gas detection probe is used to detect the gas concentration in the environment around the gas shut-off valve and the integrated control box of the ventilation equipment, and outputs a corresponding gas concentration detection signal.

[0013] The main controller has its input terminal connected to the output terminal of the gas detection probe, and its output terminal connected to the input terminal of the alarm, the input terminal of the gas shut-off valve control circuit, and the input terminal of the gas shut-off valve control circuit. The main controller is used to control the alarm to issue a warning message and output an alarm control signal to the gas shut-off valve control circuit and the ventilation equipment control circuit when the gas concentration is detected to be higher than the warning value according to the gas concentration detection signal.

[0014] Optionally, the gas shut-off valve control circuit includes:

[0015] The first relay has its input terminal connected to the output terminal of the gas alarm control component, and its output terminal is used to connect to the gas shut-off valve.

[0016] The second relay is connected in parallel between the output terminal of the first relay and the gas shut-off valve, and the output terminal of the second relay is a normally closed contact.

[0017] Optionally, the ventilation equipment control circuit includes:

[0018] The third relay, the input terminal of which is connected to the output terminal of the gas alarm control component, and the output terminal of which is used to connect to the ventilation equipment;

[0019] A fourth relay is connected in parallel between the output terminal of the third relay and the ventilation equipment, and the output terminal of the fourth relay is a normally closed contact.

[0020] Optionally, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0021] A gas control button is connected in series between the output terminal of the first relay and the gas shut-off valve. When the gas control button is triggered, it disconnects or connects the series circuit between the first relay and the gas shut-off valve.

[0022] A ventilation control button is connected in series between the output terminal of the third relay and the ventilation device. When the ventilation control button is triggered, it disconnects or connects the series circuit between the third relay and the ventilation device. The gas control button and the gas control button are self-resetting buttons.

[0023] Optionally, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0024] A first switching switch is connected in series between the output terminal of the first relay and the gas control button. When the first switching switch is triggered, it disconnects or connects the series line between the first relay and the gas control button.

[0025] The second switch is located between the output terminal of the fourth relay and the ventilation control button. When the second switch is triggered, it disconnects or connects the circuit between the fourth relay and the ventilation control button.

[0026] Optionally, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0027] An emergency control button is located between the power supply terminal of the external power source and the power supply terminal of the gas shut-off valve control circuit and the ventilation equipment control circuit. When the emergency control button is triggered, it disconnects or connects the electrical connection between the external power source and the gas shut-off valve control circuit.

[0028] Optionally, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0029] An indicator circuit is provided, the input of which is connected to the output of the gas alarm control component, the output of the gas shut-off valve control circuit, and the output of the ventilation equipment control circuit. The gas alarm control component controls the indicator circuit to operate when issuing a warning message. The gas shut-off valve control circuit controls the indicator circuit to operate when controlling the gas shut-off valve to cut off the gas supply. The ventilation equipment control circuit controls the indicator circuit to operate when controlling the ventilation equipment to operate.

[0030] Optionally, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0031] The control box body has a cavity, and the gas shut-off valve control circuit, the ventilation equipment control circuit and the gas alarm control component are disposed inside the control box body.

[0032] This utility model also proposes a gas system, including a gas shut-off valve, a ventilation device, and an integrated control box for the gas shut-off valve and the ventilation device as described above. The gas shut-off valve is connected to the gas shut-off valve control circuit in the integrated control box for the gas shut-off valve and the ventilation device, and the ventilation device is connected to the ventilation device control circuit in the integrated control box for the gas shut-off valve and the ventilation device.

[0033] This utility model's technical solution comprises a gas alarm control component, a gas shut-off valve control circuit, and a ventilation equipment control circuit, forming an integrated control box for a gas shut-off valve and ventilation equipment. The gas alarm control component detects the gas concentration in the environment surrounding the integrated control box and issues a warning message and outputs an alarm control signal when the detected gas concentration exceeds a warning value. The input terminal of the gas shut-off valve control circuit is connected to the output terminal of the gas alarm control component, and the output terminal of the gas shut-off valve control circuit is used to connect to the gas shut-off valve. Upon receiving the alarm control signal, the gas shut-off valve control circuit controls the gas shut-off valve to cut off the gas supply. The input terminal of the ventilation equipment control circuit is connected to the output terminal of the gas alarm control component, and the output terminal of the ventilation equipment control circuit is used to connect to the ventilation equipment. Upon receiving the alarm control signal, the ventilation equipment control circuit controls the ventilation equipment to operate. In this solution, the integrated control box for the gas shut-off valve and ventilation equipment integrates the gas alarm control component, the gas shut-off valve control circuit, and the ventilation equipment control circuit into one control box. The interconnected circuits can be connected, and the three can be linked by only the output signal of the gas alarm control component. This results in higher stability and safety, and eliminates the need for multiple separate control boxes, reducing the overall space required. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a functional module schematic diagram of an embodiment of the integrated control box for gas shut-off valve and ventilation equipment of this utility model.

[0036] Figure 2This is a functional module schematic diagram of another embodiment of the integrated control box for gas shut-off valve and ventilation equipment of this utility model.

[0037] Figure 3 This is a schematic diagram of the circuit structure of an embodiment of the integrated control box for gas shut-off valve and ventilation equipment of this utility model.

[0038] Figure 4 This is a circuit structure diagram of another embodiment of the integrated control box for gas shut-off valve and ventilation equipment of this utility model.

[0039] Explanation of reference numerals in the attached diagram: 10, Gas alarm control component; 11, Gas detection probe; 12, Main controller; 13, Alarm; 20, Gas shut-off valve control circuit; 30, Ventilation equipment control circuit; K1, First relay; K2, Second relay; K3, Third relay; K4, Fourth relay; SA1, First switching switch; SA2, Second switching switch; QF1, Emergency control button. Detailed Implementation

[0040] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of this utility model involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0042] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0043] Those skilled in the art can understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as the general understanding of those of ordinary skill in the field to which this utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0044] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0045] Gas is a clean and efficient energy source that brings convenience to our lives. However, gas also has the characteristics of flammability and explosiveness. Especially for industrial and commercial users such as the catering industry, there is a large flow of people and many gas-using devices. If a gas leak is not detected and properly handled in time, it may trigger safety accidents such as explosions and fires. By correctly installing and using a combustible gas alarm controller, when a gas leak occurs, it can issue an early warning in a timely manner at the initial stage of the leak, reminding the staff to take effective safety measures, which can avoid accidents and enhance the safety guarantee of using gas.

[0046] Currently, the installation and connection of the control box for gas are complex. When the combustible gas alarm controller detects the concentration of combustible gas, it is necessary to close the emergency cut-off valve and simultaneously start the ventilation facility. This requires three sets of independent devices to be interconnected to achieve linkage. Some combustible gas alarm controllers have only one set of output controls and cannot directly control the ventilation facility equipment. They need to be connected in series with the electromagnetic gas emergency cut-off valve, increasing the complexity of the control circuit.

[0047] To solve the above problems, this utility model proposes an integrated control box for a gas cut-off valve and a ventilation device.

[0048] Refer to Figure 1 , in an embodiment, the integrated control box for a gas cut-off valve and a ventilation device includes:

[0049] A gas alarm control component 10 for detecting the gas concentration in the surrounding environment of the integrated control box for a gas cut-off valve and a ventilation device, and when the detected gas concentration is higher than the warning value, issuing a warning message and outputting an alarm control signal;

[0050] A gas shut-off valve control circuit 20 is provided. The input terminal of the gas shut-off valve control circuit 20 is connected to the output terminal of the gas alarm control component 10. The output terminal of the gas shut-off valve control circuit 20 is used to connect to the gas shut-off valve. The gas shut-off valve control circuit 20 is used to control the gas shut-off valve to cut off the gas source when it receives the alarm control signal.

[0051] A ventilation equipment control circuit 30 is provided, the input terminal of which is connected to the output terminal of the gas alarm control component 10. The output terminal of the ventilation equipment control circuit 30 is used to connect to the ventilation equipment. The ventilation equipment control circuit 30 is used to control the ventilation equipment to work when it receives the alarm control signal.

[0052] In this embodiment, the gas alarm control component 10 can be composed of a detection device, a control device, and an alarm device. The detection device is used to detect the gas concentration in the surrounding environment. The control device can receive the signal output by the detection device, process it, and determine the gas concentration value of the surrounding environment. It is then compared with the gas concentration warning value preset in the control device. When the gas concentration value of the environment is higher than the preset gas concentration warning value, it means that the gas concentration value of the surrounding environment is too high and there is a safety hazard. At this time, the control device can control the alarm device to issue a warning message and output an alarm control signal. The warning message can be an audible and visual message, and the specific form can be set according to user needs and actual conditions. The gas shut-off valve control circuit 20 can be composed of electronic components such as switching devices and is set between the gas shut-off valve and the power supply. When the alarm control signal of the gas alarm control component 10 is received, the switching device in the gas shut-off valve control circuit 20 can disconnect the electrical connection between the gas shut-off valve and the power supply, thereby controlling the gas shut-off valve to cut off the gas source; or it can connect the electrical connection between the gas shut-off valve and the power supply, thereby controlling the gas shut-off valve to cut off the gas source. The specific control of connecting or disconnecting the electrical connection between the gas shut-off valve and the power supply can be set according to the setting type of the gas shut-off valve. The ventilation equipment control circuit 30 can also be composed of electronic components such as switching devices. The control principle of the ventilation equipment control circuit 30 for the ventilation equipment can be referred to the control principle of the gas shut-off valve control circuit 20 for the gas shut-off valve described above. The ventilation equipment connected to the ventilation equipment control circuit 30 can be a fan.

[0053] This utility model's technical solution comprises a gas alarm control component 10, a gas shut-off valve control circuit 20, and a ventilation equipment control circuit 30, forming an integrated control box for a gas shut-off valve and ventilation equipment. The gas alarm control component 10 detects the gas concentration in the environment surrounding the integrated control box and issues a warning message and outputs an alarm control signal when the detected gas concentration exceeds a warning value. The input terminal of the gas shut-off valve control circuit 20 is connected to the output terminal of the gas alarm control component 10, and the output terminal of the gas shut-off valve control circuit 20 is used to connect to the gas shut-off valve. Upon receiving an alarm control signal, the gas shut-off valve control circuit 20 controls the gas shut-off valve to cut off the gas supply. The input terminal of the ventilation equipment control circuit 30 is connected to the output terminal of the gas alarm control component 10, and the output terminal of the ventilation equipment control circuit 30 is used to connect to the ventilation equipment. Upon receiving an alarm control signal, the ventilation equipment control circuit 30 controls the ventilation equipment to operate. In this solution, the integrated control box for the gas shut-off valve and ventilation equipment integrates the gas alarm control component 10, the gas shut-off valve control circuit 20, and the ventilation equipment control circuit 30 into one control box. The interconnection lines can be connected, and the three can be linked by only the output signal of the gas alarm control component 10. This results in higher stability and safety, and eliminates the need for multiple separate control boxes, reducing the overall space required.

[0054] Reference Figure 2 In one embodiment, the gas alarm control component 10 includes:

[0055] Alarm 13;

[0056] The gas detection probe 11 is used to detect the gas concentration in the environment around the gas shut-off valve and the integrated control box of the ventilation equipment, and outputs the corresponding gas concentration detection signal.

[0057] The main controller 12 has its input terminal connected to the output terminal of the gas detection probe 11, and its output terminal connected to the input terminal of the alarm 13, the input terminal of the gas shut-off valve control circuit 20, and the input terminal of the gas shut-off valve control circuit 20. The main controller 12 is used to control the alarm 13 to issue a warning message and output an alarm control signal to the gas shut-off valve control circuit 20 and the ventilation equipment control circuit 30 when the gas concentration is detected to be higher than the warning value according to the gas concentration detection signal.

[0058] In this embodiment, the gas alarm control component 10 can be composed of an alarm 13, a gas detection probe 11, and a main controller 12. The alarm 13 may include a buzzer or an LED light, etc. The buzzer can emit an audible warning, while the LED can emit an luminous warning. The gas detection probe 11 can detect gas using sensors such as semiconductor sensors, catalytic combustion sensors, or electrochemical sensors. The main controller 12 can be a digital signal processor (DSP), a programmable logic device (PLD), a field programmable gate array (FPGA), a microprocessor, a microcontroller (MCU), or other electronic components. The main controller 12 can process the gas concentration detection signal to obtain the gas concentration value, and when the gas concentration is higher than the warning value, control the alarm 13 to emit an audible and visual warning message. It can also output alarm control signals to the gas shut-off valve control circuit 20 and the ventilation equipment control circuit 30.

[0059] Refer to 3 and Figure 4 In one embodiment, the gas shut-off valve control circuit 20 includes:

[0060] The first relay K1 has its input terminal connected to the output terminal of the gas alarm control component 10, and its output terminal is used to connect to the gas shut-off valve.

[0061] The second relay K2 is connected in parallel between the output terminal of the first relay K1 and the gas shut-off valve, and the output terminal of the second relay K2 is a normally closed contact.

[0062] In this embodiment, the first relay K1 and the second relay K2 are used to control the gas shut-off valve. By controlling the opening or closing of the contacts of the first relay K1 and the second relay K2, the electrical signal output to the gas shut-off valve can be controlled, thereby controlling the opening or closing of the gas shut-off valve. It should be noted that the normally open control method will not work properly due to power failure; therefore, in this embodiment, the second relay K2 is set to a normally closed contact to avoid the situation where it cannot work properly under normally open control. YV1 is the gas shut-off valve, and M1 is the ventilation equipment.

[0063] Refer to 3 and Figure 4 In one embodiment, the ventilation equipment control circuit 30 includes:

[0064] The third relay K3 has its input terminal connected to the output terminal of the gas alarm control component 10, and its output terminal is used to connect to ventilation equipment.

[0065] The fourth relay K4 is connected in parallel between the output terminal of the third relay K3 and the ventilation equipment, and the output terminal of the fourth relay K4 is a normally closed contact.

[0066] In this embodiment, the third relay K3 and the fourth relay K4 are used to control the ventilation equipment. The working principle of the third relay K3 and the fourth relay K4 can be referred to the principle of the first relay K1 and the second relay K2 in the above embodiment, and will not be repeated here.

[0067] In one embodiment, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0068] A gas control button is connected in series between the output terminal of the first relay K1 and the gas shut-off valve. When the gas control button is triggered, it disconnects or connects the series circuit between the first relay K1 and the gas shut-off valve.

[0069] A ventilation control button is connected in series between the output terminal of the third relay K3 and the ventilation equipment. When the ventilation control button is triggered, it disconnects or connects the series circuit between the third relay K3 and the ventilation equipment. The gas control button and the gas control button are self-resetting buttons.

[0070] In this embodiment, both the gas control button and the ventilation control button can consist of two buttons, as detailed below. Figure 4 Among them, SB1 is used to control the shut-off valve to disconnect, SB2 is used to control the shut-off valve to operate normally, SB3 is used to control the ventilation equipment to stop, and SB4 is used to control the ventilation equipment to start. Furthermore, a self-resetting button is used, which can automatically disconnect and reset when power is restored after a power outage, preventing automatic power restoration.

[0071] Reference Figure 4 In one embodiment, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0072] The first switching switch SA1 is connected in series between the output terminal of the first relay K1 and the gas control button. When the first switching switch SA1 is triggered, it disconnects or connects the series line between the first relay K1 and the gas control button.

[0073] The second switch SA2 is located between the output terminal of the fourth relay K4 and the ventilation control button. When the second switch SA2 is triggered, it disconnects or connects the circuit between the fourth relay K4 and the ventilation control button.

[0074] In this embodiment, the control of the gas shut-off valve and the ventilation equipment can include manual and automatic modes. The first switch SA1 is used to switch between manual and automatic control of the gas shut-off valve; by controlling the closing or opening of the first switch, the control of the gas shut-off valve can be switched between manual and automatic modes. The second switch SA2 is used to switch between manual and automatic control of the ventilation equipment; by controlling the closing or opening of the second switch, the ventilation equipment can be switched between manual and automatic modes.

[0075] Reference Figure 3 In one embodiment, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0076] The emergency control button QF1 is located between the external power supply and the power supply terminal of the gas shut-off valve control circuit 20 and the power supply terminal of the ventilation equipment control circuit 30. When the emergency control button QF1 is triggered, it disconnects or connects the external power supply and the gas shut-off valve control circuit 20.

[0077] In this embodiment, the emergency control button QF1 can simultaneously control both the gas shut-off valve control circuit 20 and the ventilation equipment control circuit 30. When the emergency control button QF1 is pressed, both the gas shut-off valve control circuit 20 and the ventilation equipment control circuit 30 stop working, and their switching devices are disconnected, thereby causing the gas shut-off valve to cut off the gas supply and the ventilation equipment to stop working. Thus, this embodiment allows for one-button control in emergencies by using the emergency control button QF1, eliminating the need for separate control of the gas shut-off valve and the ventilation equipment.

[0078] In one embodiment, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0079] An indicator circuit is provided, the input of which is connected to the output of the gas alarm control component 10, the output of the gas shut-off valve control circuit 20, and the output of the ventilation equipment control circuit 30. The gas alarm control component 10 controls the indicator circuit to operate when issuing a warning message. The gas shut-off valve control circuit 20 controls the indicator circuit to operate when controlling the gas shut-off valve to cut off the gas supply. The ventilation equipment control circuit 30 controls the indicator circuit to operate when controlling the ventilation equipment to operate.

[0080] In this embodiment, the indicator circuit can be composed of multiple LEDs or light-emitting devices, which are controlled by the gas alarm control component 10, the gas shut-off valve control circuit 20, and the ventilation equipment control circuit 30. The specific details of the indicator circuit can be found in [reference needed]. Figure 3 and Figure 4 The settings include: HR1 indicates that the switching valve is open, HG1 indicates that the shut-off valve is closed, HR2 indicates that the ventilation equipment is started, HG2 indicates that the ventilation equipment is stopped, HR3 indicates the power status, and HG3 indicates the alarm status. The color of the indicator lights can be set according to the actual situation and user needs.

[0081] In one embodiment, the integrated control box for the gas shut-off valve and ventilation equipment further includes:

[0082] The control box body has a cavity, and the gas shut-off valve control circuit 20, the ventilation equipment control circuit 30 and the gas alarm control component 10 are disposed inside the control box body.

[0083] In this embodiment, the main body of the control box can be used to fix the positional relationship of the gas shut-off valve control circuit 20, the ventilation equipment control circuit 30, and the gas alarm control component 10, ensuring safety and stability inside the main body of the control box. When the integrated control box for the gas shut-off valve and ventilation equipment is working, the positional relationship of the gas shut-off valve control circuit 20, the ventilation equipment control circuit 30, and the gas alarm control component 10 will not change, and external gas or objects will not fall on the gas shut-off valve control circuit 20, the ventilation equipment control circuit 30, and the gas alarm control component 10, thus affecting the overall operation of the integrated control box for the gas shut-off valve and ventilation equipment.

[0084] This utility model also proposes a gas system.

[0085] In one embodiment, the gas system includes a gas shut-off valve, a ventilation device, and an integrated control box for the gas shut-off valve and ventilation device as described above. The gas shut-off valve is connected to a gas shut-off valve control circuit 20 in the integrated control box, and the ventilation device is connected to a ventilation device control circuit 30 in the integrated control box. It is understood that since the gas system of this utility model uses the aforementioned integrated control box for the gas shut-off valve and ventilation device, the embodiments of the gas system of this utility model include all the technical solutions of all embodiments of the aforementioned integrated control box for the gas shut-off valve and ventilation device, and the achieved technical effects are completely the same, and will not be repeated here.

[0086] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An integrated control box for a gas shut-off valve and ventilation equipment, characterized in that, include: The gas alarm control component is used to detect the gas concentration in the environment around the integrated control box of the gas shut-off valve and ventilation equipment, and to issue a warning message and output an alarm control signal when the detected gas concentration is higher than the warning value. A gas shut-off valve control circuit, wherein the input terminal of the gas shut-off valve control circuit is connected to the output terminal of the gas alarm control component, the output terminal of the gas shut-off valve control circuit is used to connect to the gas shut-off valve, and the gas shut-off valve control circuit is used to control the gas shut-off valve to cut off the gas source when receiving the alarm control signal; A ventilation equipment control circuit is provided, wherein the input terminal of the ventilation equipment control circuit is connected to the output terminal of the gas alarm control component, the output terminal of the ventilation equipment control circuit is used to connect to the ventilation equipment, and the ventilation equipment control circuit is used to control the ventilation equipment to work when it receives the alarm control signal.

2. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 1, characterized in that, The gas alarm control component includes: Alarm; A gas detection probe is used to detect the gas concentration in the environment around the gas shut-off valve and the integrated control box of the ventilation equipment, and outputs a corresponding gas concentration detection signal. The main controller has its input terminal connected to the output terminal of the gas detection probe, and its output terminal connected to the input terminal of the alarm, the input terminal of the gas shut-off valve control circuit, and the input terminal of the gas shut-off valve control circuit. The main controller is used to control the alarm to issue a warning message and output an alarm control signal to the gas shut-off valve control circuit and the ventilation equipment control circuit when the gas concentration is detected to be higher than the warning value according to the gas concentration detection signal.

3. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 1, characterized in that, The gas shut-off valve control circuit includes: The first relay has its input terminal connected to the output terminal of the gas alarm control component, and its output terminal is used to connect to the gas shut-off valve. The second relay is connected in parallel between the output terminal of the first relay and the gas shut-off valve, and the output terminal of the second relay is a normally closed contact.

4. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 3, characterized in that, The ventilation equipment control circuit includes: The third relay, the input terminal of which is connected to the output terminal of the gas alarm control component, and the output terminal of which is used to connect to the ventilation equipment; A fourth relay is connected in parallel between the output terminal of the third relay and the ventilation equipment, and the output terminal of the fourth relay is a normally closed contact.

5. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 4, characterized in that, The integrated control box for the gas shut-off valve and ventilation equipment also includes: A gas control button is connected in series between the output terminal of the first relay and the gas shut-off valve. When the gas control button is triggered, it disconnects or connects the series circuit between the first relay and the gas shut-off valve. A ventilation control button is connected in series between the output terminal of the third relay and the ventilation device. When the ventilation control button is triggered, it disconnects or connects the series circuit between the third relay and the ventilation device. The gas control button and the gas control button are self-resetting buttons.

6. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 5, characterized in that, The integrated control box for the gas shut-off valve and ventilation equipment also includes: A first switching switch is connected in series between the output terminal of the first relay and the gas control button. When the first switching switch is triggered, it disconnects or connects the series line between the first relay and the gas control button. The second switch is located between the output terminal of the fourth relay and the ventilation control button. When the second switch is triggered, it disconnects or connects the circuit between the fourth relay and the ventilation control button.

7. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 1, characterized in that, The integrated control box for the gas shut-off valve and ventilation equipment also includes: An emergency control button is located between the power supply terminal of the external power source and the power supply terminal of the gas shut-off valve control circuit and the ventilation equipment control circuit. When the emergency control button is triggered, it disconnects or connects the electrical connection between the external power source and the gas shut-off valve control circuit.

8. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 1, characterized in that, The integrated control box for the gas shut-off valve and ventilation equipment also includes: An indicator circuit is provided, the input of which is connected to the output of the gas alarm control component, the output of the gas shut-off valve control circuit, and the output of the ventilation equipment control circuit. The gas alarm control component controls the indicator circuit to operate when issuing a warning message. The gas shut-off valve control circuit controls the indicator circuit to operate when controlling the gas shut-off valve to cut off the gas supply. The ventilation equipment control circuit controls the indicator circuit to operate when controlling the ventilation equipment to operate.

9. The integrated control box for gas shut-off valve and ventilation equipment as described in claim 1, characterized in that, The integrated control box for the gas shut-off valve and ventilation equipment also includes: The control box body has a cavity, and the gas shut-off valve control circuit, the ventilation equipment control circuit and the gas alarm control component are disposed inside the control box body.

10. A gas system, characterized in that, The device includes a gas shut-off valve, a ventilation device, and an integrated control box for the gas shut-off valve and the ventilation device as described in any one of claims 1-9, wherein the gas shut-off valve is connected to a gas shut-off valve control circuit in the integrated control box for the gas shut-off valve and the ventilation device, and the ventilation device is connected to a ventilation device control circuit in the integrated control box for the gas shut-off valve and the ventilation device.

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