Gas alarm sensitivity detection device

Abstract

The utility model provides a gas alarm sensitivity detection device, which relates to the technical field of gas alarm detection equipment and comprises an assembly tray, a power-on connector is arranged at the center of the top of the assembly tray, and a bearing frame is welded on the outer surface wall of the assembly tray. An extension supporting plate is fixedly installed between the assembling tray and the top of the bearing frame, a T-shaped sliding rail is fixedly installed at the top of the extension supporting plate, the outer surface wall of the T-shaped sliding rail is movably sleeved with a sliding sleeve, a supporting frame is fixedly installed at the top of the sliding sleeve, and an arc-shaped cover is fixedly installed on the outer surface wall of the supporting frame. An intersection box, a PLC and a range finder are fixedly installed on the front surface of the arc-shaped cover, the mechanical transmission principle is adopted, the response process of an alarm is simulated, the emission rate of harmful gas with the set concentration is flexibly controlled, the distance between a detection component and the alarm is gradually adjusted, the maximum response distance of the alarm is obtained, and the detection accuracy is improved. And accurate data support is provided for the installation position of the alarm.

Description

Technical Field

[0001] The utility model relates to the technical field of gas alarm detection equipment, in particular to a gas alarm sensitivity detection device. Background Art

[0002] A gas alarm is a gas leak detection alarm instrument. When flammable or toxic gas leaks in an industrial environment and the gas alarm detects that the gas concentration reaches the critical point set by the explosion or poisoning alarm, the alarm will send out an alarm signal to remind workers to take safety measures and drive the exhaust, cut-off, and spray systems to prevent explosions, fires, and poisoning accidents, thereby ensuring safe production.

[0003] The existing gas alarm sensitivity detection equipment has the following deficiencies:

[0004] The sensitivity of the gas alarm is limited by the diffusion rate of the measured gas. Since the diffusion rate of each harmful substance in the air is affected by molecular mass, temperature and diffusion distance, the sensing time of the alarm at a fixed position under different conditions is inconsistent. The traditional detection method mainly controls the release amount of harmful gases, detects the effective response time of the alarm, and compares the standard data to judge the sensitivity of the alarm. However, this method is relatively blind, and the simulated harmful gas emissions are quite different from the actual emissions. It is impossible to effectively obtain the optimal response distance of the alarm and reasonably adjust the installation position of the alarm. Utility Model Content

[0005] The utility model can gradually diffuse harmful gases to the periphery of the alarm according to their initial acceleration direction. If the alarm responds, the signal is quickly captured by the photosensitive probe, and the rangefinder can quickly measure the distance between the arc cover and the alarm within the stage. The electric push rod is further combined with the active connectivity of the T-shaped slide rail and the slide sleeve to gradually increase the distance between the arc cover and the alarm. A waiting time is set for each adjustment to avoid interference from residual gas from the previous time, and ultimately the maximum response distance of the alarm is obtained to solve the problems raised by the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas alarm sensitivity detection device, comprising an assembly tray, an electric connector is provided at the top center of the assembly tray, a load-bearing frame is welded to the outer wall of the assembly tray, an extension tray is fixedly installed between the assembly tray and the top of the load-bearing frame, a T-shaped slide rail is fixedly installed on the top of the extension tray, a sliding sleeve is provided on the outer wall movable sleeve of the T-shaped slide rail, a support frame is fixedly installed on the top of the sliding sleeve, an arc cover is fixedly installed on the outer wall of the support frame, a junction box, a PLC controller and a rangefinder are respectively fixedly installed on the front surface of the arc cover, a group of nozzles are fixedly connected to the outer wall of the junction box, a photosensitive probe is fixedly connected to the interior of the PLC controller, and a visual screen is fixedly connected to the outer wall of the rangefinder.

[0007] Preferably, grafting plates are welded on both sides of the outer wall of the support frame, a hollow sleeve is fixedly installed inside each of the grafting plates, and an air storage tank and an air pump are respectively inserted inside the two hollow sleeves.

[0008] Preferably, the input end of the air pump is fixedly connected to a primary pipeline, the air inlet end of the primary pipeline is connected to the top of the air storage tank, and the output end of the air pump is fixedly connected to an air valve connector.

[0009] Preferably, a group of secondary pipes are fixedly connected to the top of the gas valve joint, and exhaust ends of the group of secondary pipes all pass through the top of the junction box and are connected to the interior of the junction box.

[0010] Preferably, an electric push rod is fixedly installed at the bottom of the extended support plate, a linkage frame is fixedly sleeved on the shaft end of the electric push rod, a support rod is fixedly inserted inside the support frame, and the outer wall of the support rod is fixedly inserted inside the linkage frame.

[0011] Preferably, a rectangular groove is provided inside the assembly tray, an independent power supply is fixedly installed inside the rectangular groove, and the wiring terminals of the independent power supply are connected to the wiring inside the assembly tray.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] In the utility model, by constructing a simulation test platform, the alarm measured when the equipment is working can be directly installed in the assembly tray, and the energy supply is completed by the energized connector. During the process, harmful gases of specified concentration are squeezed and discharged from the nozzle and quickly released into the air. According to the initial acceleration direction of the harmful gas, it is gradually diffused to the periphery of the alarm. If the alarm responds, the signal is quickly captured by the photosensitive probe, and the rangefinder can quickly measure the distance between the arc cover and the alarm in the stage. The electric push rod is further combined with the active connectivity of the T-type slide rail and the slide sleeve to gradually increase the distance between the arc cover and the alarm. A waiting time is set for each adjustment to avoid interference from the residual gas last time, and finally the maximum response distance of the alarm is obtained. The equipment adopts the mechanical transmission principle, simulates the alarm response process, flexibly controls the emission rate of the set concentration of harmful gases, and gradually adjusts the distance between the detection component and the alarm to obtain the maximum response distance of the alarm, providing accurate data support for the installation position of the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a main structural stereogram of a gas alarm sensitivity detection device proposed by the utility model;

[0015] Figure 2 This is a bottom side structural stereogram of a gas alarm sensitivity detection device proposed by the utility model;

[0016] Figure 3 This is an enlarged stereoscopic diagram of the connecting structure of the sliding sleeve in the sensitivity detection device of the gas alarm proposed by the utility model;

[0017] Figure 4 This is an enlarged stereoscopic diagram of part of the structure of a gas alarm sensitivity detection device proposed by the utility model.

[0018] Legend: 1. Assembly tray; 2. Power connector; 3. Load-bearing frame; 4. Extension tray; 5. T-shaped slide rail; 6. Sliding sleeve; 7. Support frame; 8. Arc cover; 9. Junction box; 10. Nozzle; 11. PLC controller; 12. Photosensitive probe; 13. Distance meter; 14. Visual screen; 15. Grafting plate; 16. Hollow sleeve; 17. Gas tank; 18. Air pump; 19. Gas valve connector; 20. Primary pipeline; 21. Secondary pipeline; 22. Electric push rod; 23. Linkage frame; 24. Support rod; 25. Rectangular groove; 26. Independent power supply. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a gas alarm sensitivity detection device, including an assembly tray 1, an electric connector 2 is provided at the top center of the assembly tray 1, a load-bearing frame 3 is welded to the outer wall of the assembly tray 1, an extension tray 4 is fixedly installed between the top of the assembly tray 1 and the load-bearing frame 3, a T-shaped slide rail 5 is fixedly installed on the top of the extension tray 4, a sliding sleeve 6 is movably provided on the outer wall of the T-shaped slide rail 5, a support frame 7 is fixedly installed on the top of the sliding sleeve 6, an arc cover 8 is fixedly installed on the outer wall of the support frame 7, a junction box 9, a PLC controller 11 and a rangefinder 13 are respectively fixedly installed on the front surface of the arc cover 8, a group of nozzles 10 are fixedly connected to the outer wall of the junction box 9, a photosensitive probe 12 is fixedly connected to the interior of the PLC controller 11, and a visual screen 14 is fixedly connected to the outer wall of the rangefinder 13.

[0022] like Figure 3 and Figure 4 As shown, grafting plates 15 are welded on both sides of the outer wall of the support frame 7, and a hollow sleeve 16 is fixedly installed inside each grafting plate 15. A gas storage tank 17 and an air pump 18 are respectively inserted into the two hollow sleeves 16. By presetting the above components, the gas storage tank 17 stores harmful gases required for detection, which are continuously extracted by the air pump 18 when the equipment is working.

[0023] like Figure 3 and Figure 4 As shown, the input end of the air pump 18 is fixedly connected to a primary pipeline 20, the air inlet end of the primary pipeline 20 is connected to the top of the air storage tank 17, and the output end of the air pump 18 is fixedly connected to a gas valve connector 19. By presetting the above components, the internal valve of the gas valve connector 19 can control the emission rate of the required harmful gas, thereby controlling the filling time of the gas in the intersection box 9 to ensure that the amount of harmful gas released is controlled.

[0024] like Figure 4 As shown, a group of secondary pipes 21 are fixedly connected to the top of the gas valve connector 19, and the exhaust ends of the group of secondary pipes 21 all pass through the top of the junction box 9 and are connected to the interior of the junction box 9. By presetting the above components, since the equipment is mainly used for the detection of alarms, a small amount of manual participation is required in the process. During the operation, only harmful gases of specified concentration and cubic volume need to be released, and controlling the gas flow can avoid affecting surrounding personnel.

[0025] like Figure 1 and Figure 2As shown, an electric push rod 22 is fixedly installed at the bottom of the extended support plate 4, and a linkage frame 23 is fixedly sleeved on the axial end of the electric push rod 22. A support rod 24 is fixedly inserted inside the support frame 7, and the outer wall of the support rod 24 is fixedly inserted inside the linkage frame 23. By presetting the above components and utilizing the coordination of related parts, the equipment can autonomously adjust the distance.

[0026] like Figure 1 As shown, a rectangular groove 25 is provided inside the assembly tray 1, and an independent power supply 26 is fixedly installed inside the rectangular groove 25. The wiring terminals of the independent power supply 26 are connected to the wiring inside the assembly tray 1. By presetting the above components, energy can be provided for multiple electrical components contained in the device.

[0027] The effect achieved by the entire device is as follows: first, the device is moved to the designated work area, and the bottom of the assembly tray 1 is fully in contact with the ground, and then the external line is inserted into the independent power supply 26 to provide energy for the multiple electrical components contained in the device. The designated alarm is selected, and its conductive end is accurately inserted into the power connector 2. At this time, the alarm is in the power-on state, and the air pump 18 is turned on. The internal impeller starts to rotate and start to extract the harmful gas in the gas tank 17. Before this, the valve in the air valve connector 19 is adjusted to control the release amount of the harmful gas. The harmful gas is transported by the primary pipeline 20 and the secondary pipeline 21, and the harmful gas continues to flow into the junction box 9. As the gas in the junction box 9 increases, the air pressure intensity gradually increases. After the gas in the junction box 9 is full, part of the gas will be ejected from the nozzle 10. Out, quickly diffuse into the surrounding air, and continue to diffuse toward the alarm according to the initial acceleration direction of the harmful gas. When the light in the alarm lights up, the photosensitive probe 12 quickly identifies it, and the collected signal is quickly fed back to the PLC controller 11 to control the opening of the rangefinder 13. The set window quickly emits infrared light, and the distance between the arc cover 8 and the alarm in the stage is measured, and displayed on the visual screen 14. After waiting for a period of time, the PLC controller 11 controls the opening of the electric push rod 22, and its shaft end extends outward and acts on the support rod 24. The movable connection between the T-shaped slide rail 5 and the sliding sleeve 6 is used to drive the arc cover 8 away from the alarm for a distance. The distance between the arc cover 8 and the alarm is increased in turn through the above method, and finally the maximum sensing range of the alarm is obtained.

[0028] The wiring diagram of the PLC controller 11, the photosensitive probe 12, the rangefinder 13, the air pump 18 and the electric push rod 22 in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the PLC controller 11, the photosensitive probe 12, the rangefinder 13, the air pump 18 and the electric push rod 22 are no longer explained in detail.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A gas alarm sensitivity detection device, characterized in that: The invention comprises an assembly tray (1), wherein an electric connection connector (2) is provided at the center of the top of the assembly tray (1), a load-bearing frame (3) is welded to the outer wall of the assembly tray (1), an extension tray (4) is fixedly installed between the top of the assembly tray (1) and the load-bearing frame (3), a T-shaped slide rail (5) is fixedly installed on the top of the extension tray (4), a sliding sleeve (6) is movably provided on the outer wall of the T-shaped slide rail (5), a support frame (7) is fixedly installed on the top of the sliding sleeve (6), an arc cover (8) is fixedly installed on the outer wall of the support frame (7), a junction box (9), a PLC controller (11) and a rangefinder (13) are respectively fixedly installed on the front surface of the arc cover (8), a group of nozzles (10) are fixedly connected to the outer wall of the junction box (9), a photosensitive probe (12) is fixedly connected to the interior of the PLC controller (11), and a visual screen (14) is fixedly connected to the outer wall of the rangefinder (13).

2. A gas alarm sensitivity detection device according to claim 1, characterized in that: Grafting plates (15) are welded on both sides of the outer wall of the support frame (7), a hollow sleeve (16) is fixedly installed inside each of the grafting plates (15), and a gas storage tank (17) and an air pump (18) are respectively inserted inside the two hollow sleeves (16).

3. A gas alarm sensitivity detection device according to claim 2, characterized in that: The input end of the air pump (18) is fixedly connected to a primary pipeline (20), the air inlet end of the primary pipeline (20) is connected to the top of the air storage tank (17), and the output end of the air pump (18) is fixedly connected to a gas valve connector (19).

4. A gas alarm sensitivity detection device according to claim 3, characterized in that: A group of secondary pipes (21) are fixedly connected to the top of the gas valve joint (19), and the exhaust ends of the group of secondary pipes (21) all pass through the top of the junction box (9) and are connected to the interior of the junction box (9).

5. A gas alarm sensitivity detection device according to claim 1, characterized in that: An electric push rod (22) is fixedly mounted on the bottom of the extended support plate (4); a linkage frame (23) is fixedly sleeved on the shaft end of the electric push rod (22); a support rod (24) is fixedly inserted inside the support frame (7); and an outer wall of the support rod (24) is fixedly inserted inside the linkage frame (23).

6. A gas alarm sensitivity detection device according to claim 1, characterized in that: A rectangular groove (25) is provided inside the assembly tray (1), an independent power supply (26) is fixedly installed inside the rectangular groove (25), and the wiring terminals of the independent power supply (26) are connected to the wiring inside the assembly tray (1).

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