Linkage test system suitable for gas meter and combustible gas alarm

Abstract

The utility model discloses a linkage test system suitable for a gas meter and a combustible gas alarm, which comprises a ventilation test module and a linkage control module, the ventilation test module comprises a gas source, a ventilation control valve and a ventilation pipeline, the ventilation pipeline is used for communicating the gas source with the gas meter, the ventilation control valve is arranged on the ventilation pipeline, and the linkage control module is arranged on the linkage control module. The gas meter comprises a flow sensor and a meter control valve, the linkage control module is connected with the ventilation control valve, and the linkage control module is further used for being connected with the meter control valve, the flow sensor and the combustible gas alarm. The linkage control module comprises a microprocessor, an AD sampling module, a valve driving module, a display module, a wireless communication module and a power module. According to the utility model, the linkage performance of the gas meter and the alarm is comprehensively tested by simulating an actual use scene, so as to ensure that the gas meter and the alarm can rapidly and accurately work cooperatively, give an alarm in time and take corresponding measures when gas leakage occurs, thereby effectively avoiding the occurrence of safety accidents.

Description

Technical Field

[0001] The utility model belongs to the field of gas meter testing, and in particular relates to a linkage testing system suitable for a gas meter and a combustible gas alarm. Background Art

[0002] In the field of civil gas safety, gas meters and alarms are key equipment to ensure user safety, and their stability and reliability are directly related to the safety of users' lives and property. Although traditional gas meters and alarms can perform gas metering and leak detection functions respectively when operating independently, in actual applications, the linkage between the two is often insufficient, making it difficult to detect and handle emergency situations such as gas leaks in the first place.

[0003] With the advancement of science and technology and the continuous improvement of people's safety needs, it is particularly important to develop a test system that can efficiently and accurately realize the linkage between gas meters and alarms. At present, although there are some linkage devices or test methods for gas meters and alarms on the market, most of them have problems such as low test efficiency, poor accuracy, and complex operation, which are difficult to meet the needs of modern civil gas safety management. Therefore, the development of a new, efficient, and easy-to-operate linkage test system for civil gas meters and alarms is of great significance to improving the level of gas safety management and ensuring user safety. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, to conduct linkage testing on the gas meter and the alarm, and to provide a linkage testing system suitable for the gas meter and the combustible gas alarm.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A linkage test system suitable for a gas meter and a combustible gas alarm, comprising a ventilation test module and a linkage control module, wherein the ventilation test module comprises a gas source, a ventilation control valve and a ventilation pipe, wherein the ventilation pipe is used to connect the gas source with the gas meter, wherein the gas meter comprises a flow sensor and a meter control valve, wherein the linkage control module is connected to the ventilation control valve, and wherein the linkage control module is also used to connect to the meter control valve, the flow sensor and the combustible gas alarm.

[0007] The utility model realizes the linkage test of the gas meter and the alarm, detects gas leakage through the combustible gas alarm and outputs a gas alarm signal, detects the gas flow through the flow sensor and outputs a flow detection signal, receives the gas alarm signal and the flow detection signal through the linkage control module for processing, controls the ventilation control valve and the meter control valve to be opened or closed, and realizes the linkage test.

[0008] Preferably, the linkage control module includes a microprocessor, an AD sampling module and a valve driving module. The input end of the AD sampling module is connected to the output end of the flow sensor, the output end of the AD sampling module is connected to the first input end of the microprocessor, the second input end of the microprocessor is also connected to the output end of the combustible gas alarm, the first output end of the microprocessor is connected to the valve driving module, the valve driving module is also connected to the meter control valve and the ventilation control valve, and the valve driving module is used to drive the meter control valve and the ventilation control valve to open or close.

[0009] Preferably, a pressure sensor is provided on the ventilation duct, and an output end of the pressure sensor is connected to an input end of the AD sampling module.

[0010] Preferably, it also includes a wireless communication module, which is connected to the combustible gas alarm and the linkage control module respectively.

[0011] Preferably, the ventilation pipeline includes a main pipeline and a branch pipeline, the ventilation control valve is arranged on the main pipeline, the main pipeline and the branch pipeline are connected by a three-way pipe fitting, the first end of the main pipeline is connected to the gas source, the second end of the main pipeline is connected to a pressure gauge, the branch pipeline includes a gas meter air inlet pipeline and a gas meter air outlet pipeline, the first end of the gas meter air inlet pipeline is used to be connected to the air inlet end of the gas meter, the second end of the gas meter air inlet pipeline is connected to the main pipeline through a three-way pipe fitting, the first end of the gas meter air outlet pipeline is used to be connected to the air outlet end of the gas meter, and the second end of the gas meter air outlet pipeline is connected to a rotor flowmeter.

[0012] Preferably, the branch pipes and rotor flowmeters are provided in plurality, the main pipe is provided with a plurality of three-way pipe fittings, the main pipe is connected to each branch pipe through each three-way pipe fitting, and the second end of each gas meter outlet pipe is connected to each rotor flowmeter.

[0013] Preferably, the linkage control module further includes a display module and a power module, the power module is connected to the power input terminal of the microprocessor, and the display module is connected to the second output terminal of the microprocessor.

[0014] In order to facilitate operators to handle power outage emergencies, a first manual valve is also provided at the first end of the main pipeline; and a second manual valve is also provided at the second end of the gas meter outlet pipeline.

[0015] In order to achieve precise control, the ventilation control valve adopts a precise pressure reducing valve.

[0016] The utility model simulates actual usage scenarios and comprehensively tests the linkage performance of the gas meter and the alarm to ensure that when a gas leak occurs, the two can work together quickly and accurately, sound the alarm in time and take corresponding measures, thereby effectively avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below with reference to the accompanying drawings:

[0018] Figure 1 is a schematic diagram of Example 1;

[0019] Figure 2 is a schematic diagram of a linkage control module of Example 1;

[0020] Figure 3 is a structural schematic diagram of a ventilation test module of Example 1;

[0021] Figure 4 It is a structural schematic diagram of the ventilation test module of Example 2.

[0022] Explanation of the reference numerals: 1: gas source; 2: ventilation control valve; 3: main pipeline; 401: gas inlet pipeline; 402: gas outlet pipeline; 5: pressure gauge; 6: rotor flowmeter; 7: first manual valve; 8: gas meter; 9: second manual valve; 10: three-way pipe fitting. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1 As shown, the utility model provides a linkage test system suitable for a gas meter and a combustible gas alarm, including a ventilation test module and a linkage control module. The ventilation test module includes a gas source, a ventilation control valve and a ventilation pipe. The ventilation pipe is used to connect the gas source with the gas meter. The gas meter includes a flow sensor and a meter control valve. The linkage control module is connected to the ventilation control valve. A pressure sensor is arranged on the ventilation pipe. The linkage control module is also used to connect with the meter control valve, the flow sensor, the combustible gas alarm and the pressure sensor.

[0025] In this embodiment, Figure 2As shown, the linkage control module includes a microprocessor, an AD sampling module, a valve drive module, a display module, a wireless communication module and a power module. The input end of the AD sampling module is connected to the output end of the flow sensor and the pressure sensor, the output end of the AD sampling module is connected to the first input end of the microprocessor, the second input end of the microprocessor is also connected to the output end of the combustible gas alarm, the first output end of the microprocessor is connected to the valve drive module, the valve drive module is also connected to the meter control valve and the ventilation control valve, and the valve drive module is used to drive the meter control valve and the ventilation control valve to open or close. The power module is connected to the power input end of the microprocessor, and the display module is connected to the second output end of the microprocessor. In this embodiment, in order to achieve long-distance communication, the second input end of the microprocessor is connected to the output end of the combustible gas alarm through a wireless communication module.

[0026] A connection is established between the combustible gas alarm and the linkage control module through the wireless communication module; the combustible gas alarm is used to detect whether gas is leaking, and the flow detection signal output by the flow sensor and the pressure difference detection signal output by the pressure sensor are received through the AD sampling module and then AD conversion is performed; the microprocessor receives the flow detection signal and the pressure difference detection signal after AD conversion for processing and outputs a fault signal to the valve drive module; the microprocessor also receives the alarm signal output by the combustible gas alarm, processes it and outputs it to the valve drive module, and drives the meter control valve to open or close the valve through the valve drive module.

[0027] In this embodiment, Figure 3 As shown, the ventilation pipeline includes a main pipeline 3 and a branch pipeline. In order to facilitate the distribution of pipelines, the main pipeline 3 adopts a vertical pipeline. The first end of the main pipeline 3 is connected to the gas source 1, the ventilation control valve 2 is arranged at the first end of the main pipeline 3, the second end of the main pipeline 3 is connected to a pressure gauge 5, the main pipeline 3 and the branch pipeline are connected by a three-way pipe fitting 10, and the branch pipeline includes a gas meter inlet pipeline 401 and a gas meter outlet pipeline 402. The first end of the gas meter inlet pipeline 401 is used to connect to the inlet end of the gas meter 8, the second end of the gas meter inlet pipeline 401 is connected to the main pipeline 3 through a three-way pipe fitting 10, the first end of the gas meter outlet pipeline 402 is used to connect to the outlet end of the gas meter 8, and the second end of the gas meter outlet pipeline 402 is connected to a rotor flowmeter 6. In order to facilitate the operator to carry out emergency treatment of power outages, a first manual valve 7 is also arranged at the first end of the main pipeline 3, and a second manual valve 9 is also arranged at the second end of the gas meter outlet pipeline 402. In order to achieve precise control, the ventilation control valve adopts a precision pressure reducing valve.

[0028] In this embodiment, the working process of the linkage test system is as follows: connect the ventilation pipeline with the gas meter, and connect the linkage control module with the combustible gas alarm and the gas meter. When the linkage test system is turned on, the flow sensor detects the gas flow in the meter, the pressure sensor detects the pressure in the pipeline, and the combustible gas alarm detects the gas concentration outside the pipeline. The three respectively output the detected signals to the linkage control system. Once a gas leak occurs, the linkage control module immediately outputs a valve closing instruction, controls the valve drive module to cut off the meter control valve of the gas meter and the ventilation control valve of the ventilation test module, and monitors the status of the valve closing instruction, thereby realizing the linkage status monitoring test.

[0029] The utility model simulates actual usage scenarios and comprehensively tests the linkage performance of the gas meter and the combustible gas alarm to ensure that when a gas leak occurs, the two can work together quickly and accurately, sound the alarm in time and take corresponding measures, thereby effectively avoiding the occurrence of safety accidents.

[0030] Example 2

[0031] Different from Example 1, in this embodiment, Figure 4 As shown, multiple branch pipes and rotor flowmeters 6 are provided, multiple three-way pipe fittings 10 are provided on the main pipe, the main pipe 3 is connected to each branch pipe through each three-way pipe fitting 10, and the second end of each gas meter outlet pipe 402 is connected to each rotor flowmeter 6.

[0032] By setting up multiple branch pipelines, multiple gases can be used simultaneously to compare and verify the linkage status and reliability of different gas meters and combustible gas alarms.

[0033] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims

1. A linkage test system suitable for gas meters and combustible gas alarms, characterized in that: It includes a ventilation test module and a linkage control module. The ventilation test module includes a gas source, a ventilation control valve and a ventilation pipe. The ventilation pipe is used to connect the gas source with the gas meter. The gas meter includes a flow sensor and a meter control valve. The linkage control module is connected to the ventilation control valve. The linkage control module is also used to connect with the meter control valve, the flow sensor and the combustible gas alarm.

2. The linkage test system for gas meters and combustible gas alarms according to claim 1, characterized in that: The linkage control module includes a microprocessor, an AD sampling module and a valve driving module. The input end of the AD sampling module is connected to the output end of the flow sensor, the output end of the AD sampling module is connected to the first input end of the microprocessor, the second input end of the microprocessor is also connected to the output end of the combustible gas alarm, the first output end of the microprocessor is connected to the valve driving module, the valve driving module is also connected to the meter control valve and the ventilation control valve, and the valve driving module is used to drive the meter control valve and the ventilation control valve to open or close.

3. The linkage test system for gas meters and combustible gas alarms according to claim 2, characterized in that: A pressure sensor is provided on the ventilation pipeline, and an output end of the pressure sensor is connected to an input end of the AD sampling module.

4. The linkage test system for gas meters and combustible gas alarms according to claim 1, characterized in that: It also includes a wireless communication module, which is connected to the combustible gas alarm and the linkage control module respectively.

5. The linkage test system for gas meters and combustible gas alarms according to claim 1, characterized in that: The ventilation pipeline includes a main pipeline and a branch pipeline, the ventilation control valve is arranged on the main pipeline, the main pipeline and the branch pipeline are connected by a three-way pipe fitting, the first end of the main pipeline is connected to the gas source, the second end of the main pipeline is connected to a pressure gauge, the branch pipeline includes a gas meter air inlet pipeline and a gas meter air outlet pipeline, the first end of the gas meter air inlet pipeline is used to be connected to the air inlet end of the gas meter, the second end of the gas meter air inlet pipeline is connected to the main pipeline by a three-way pipe fitting, the first end of the gas meter air outlet pipeline is used to be connected to the air outlet end of the gas meter, and the second end of the gas meter air outlet pipeline is connected to a rotor flowmeter.

6. The linkage test system for gas meters and combustible gas alarms according to claim 5, characterized in that: There are multiple branch pipelines and rotor flowmeters, and multiple three-way pipe fittings are arranged on the main pipeline. The main pipeline is connected to each branch pipeline through each three-way pipe fitting, and the second end of each gas meter outlet pipeline is connected to each rotor flowmeter.

7. The linkage test system for gas meters and combustible gas alarms according to claim 2, characterized in that: The linkage control module also includes a display module and a power module. The power module is connected to the power input terminal of the microprocessor, and the display module is connected to the second output terminal of the microprocessor.

8. The linkage test system for gas meters and combustible gas alarms according to claim 5, characterized in that: A first manual valve is also arranged at the first end of the main pipeline.

9. The linkage test system for gas meters and combustible gas alarms according to claim 5, characterized in that: A second manual valve is also provided at the second end of the gas outlet pipe of the gas meter.

10. The linkage test system for gas meters and combustible gas alarms according to claim 1, characterized in that: The ventilation control valve adopts a precision pressure reducing valve.

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