Testing device for combustible gas detector

Abstract

The utility model discloses a testing device for a combustible gas detector, which comprises a supporting groove, an accommodating cylinder and a spray pipe which are communicated with each other are fixedly connected in the supporting groove, an end cover is fixedly connected to the inner wall of the accommodating cylinder, a piston is slidably connected to the inner wall of the accommodating cylinder, and the piston moves so that combustible gas can be sprayed out through the spray pipe. One side of the piston is fixedly connected with a driving part, the piston is driven by the driving part to move, and then the combustible gas in the containing cylinder flows into the spraying pipe and is sprayed out. One end of the pull rope is driven to move by pulling the pull handle, then the pull rope drives the piston to move in the direction close to the end cover, combustible gas in the piston flows into the front side of the piston through the communicating hole, and meanwhile the piston moves to drive the plugging block to move to open the communicating pipe. Combustible gas can enter the spray pipe through the communicating pipe to be sprayed out so as to be used for testing of the combustible gas detector, the combustible gas is released in a mechanical mode, and compared with the prior art, the device can adapt to some explosive dangerous places.

Description

Technical Field

[0001] The present application relates to the technical field of detector testing equipment, and in particular to a testing device for a combustible gas detector. Background Art

[0002] A combustible gas detector is a device used to detect the concentration of combustible gas in the air, and is designed to ensure the safety of explosive environments. In order to ensure that the gas detectors installed at the site can be used normally, it is necessary to test the alarm function of the gas detectors regularly after the gas detectors are installed or during operation. During the test, a small amount of corresponding combustible gas is released at the combustible gas detector, and any changes are observed on the operating indicator light of the combustible gas detector or the gas alarm controller. If the controller does not have an alarm response, it means that the amount of gas released is too little. At this time, you can release a little more gas until the combustible gas detector alarm indicator light on the gas alarm controller is always on (if there is a status indicator light), and the gas alarm controller will send out an audible and visual alarm signal. The test is successful and the equipment can be used normally.

[0003] The existing testing method mainly uses a device similar to a smoke gun to charge the battery, fills the gas storage chamber with combustible gas, lengthens the connecting rod, adjusts the size of the gas outlet, turns on the electronic trigger switch during the test, and releases the combustible gas to test the detector function. However, in some explosive and hazardous places, when testing the alarm function of the combustible gas detector, it is necessary to avoid using an ignition source that causes a fire or explosion. The existing rechargeable, battery-powered or other electrically triggered testing tools cannot meet the use requirements. Therefore, a testing device for combustible gas detectors is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a testing device for a combustible gas detector to solve the problems raised in the above background technology.

[0005] The present application embodiment adopts the following technical solutions:

[0006] A testing device for a combustible gas detector comprises a bracket, wherein a communicating accommodating tube and a nozzle are fixedly connected inside the bracket, an end cover is fixedly connected to the inner wall of the accommodating tube, a piston is slidably connected to the inner wall of the accommodating tube, the piston moves so that the combustible gas can be sprayed out through the nozzle, and a driving member is fixedly connected to one side of the piston.

[0007] Preferably, a connecting pipe is fixedly connected to the front end of the accommodating tube, one end of the connecting pipe is fixedly connected to the nozzle, and the accommodating tube is communicated with the nozzle through the connecting pipe.

[0008] Preferably, a spring is fixedly connected to one side of the piston, an end of the spring away from the piston is fixedly connected to the end cover, the piston fits against an inner wall of the accommodating cylinder away from the end cover, and a connecting hole is provided on the front side of the piston.

[0009] Preferably, a blocking block is fixedly connected to the front side of the piston, and the blocking block is inserted into the connecting pipe for sealing.

[0010] Preferably, the driving member is a pull rope, and the pull rope drives the piston to move toward the end cover so that the combustible gas enters the nozzle through the connecting hole and the connecting pipe.

[0011] Preferably, a handle is fixedly connected to the lower surface of the bracket, a pull handle is slidably connected to the lower surface of the bracket, and one end of the pull rope away from the piston is fixedly connected to the pull handle.

[0012] Preferably, two first steering blocks are fixedly connected to the sides of the end cover, a through hole is provided inside the bracket, an installation groove is opened on the lower surface of the bracket, the pull rope passes through the through hole handle and extends into the installation groove, and a second steering block is fixedly connected to the inner wall of the installation groove.

[0013] Preferably, an injection pipe is fixedly connected to the surface of the accommodating cylinder, and a one-way valve is fixedly connected to the surface of the injection pipe.

[0014] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0015] In the utility model, by pulling the handle, one end of the pull rope is driven to move, and then the pull rope drives the piston to move in the direction close to the end cover, so that the space between the piston and the end cover becomes smaller and the pressure becomes larger, and the combustible gas inside it flows into the front side of the piston through the connecting hole. At the same time, the movement of the piston drives the blocking block to move to open the connecting pipe. The combustible gas can enter the nozzle through the connecting pipe and be sprayed out for testing the combustible gas detector. The combustible gas is released in a mechanical way. Compared with the existing technology, it can adapt to some explosive and dangerous places. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 : A three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 : A schematic cross-sectional view of the accommodating tube of the utility model;

[0019] Figure 3The figure is a schematic diagram of the side section structure of the bracket and the accommodating tube of the utility model;

[0020] Figure 4 For: the utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1. bracket; 2. accommodating cylinder; 3. nozzle; 4. end cover; 5. piston; 6. connecting pipe; 7. spring; 8. connecting hole; 9. blocking block; 10. pull rope; 11. grip; 12. pull handle; 13. first steering block; 14. second steering block; 15. injection pipe; 16. one-way valve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0023] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0024] See also Figure 1-4 , the utility model provides a technical solution for a test device for a combustible gas detector:

[0025] A testing device for a combustible gas detector comprises a bracket 1, wherein a communicating accommodating tube 2 and a nozzle 3 are fixedly connected inside the bracket 1, an end cover 4 is fixedly connected to the inner wall of the accommodating tube 2, a piston 5 is slidably connected to the inner wall of the accommodating tube 2, the piston 5 moves so that the combustible gas can be sprayed out through the nozzle 3, a driving member is fixedly connected to one side of the piston 5, and the piston 5 is driven to move by the driving member, thereby causing the combustible gas in the accommodating tube 2 to flow into the nozzle 3 and be sprayed out.

[0026] A connecting pipe 6 is fixedly connected to the front end of the accommodating tube 2, one end of the connecting pipe 6 is fixedly connected to the nozzle 3, and the accommodating tube 2 and the nozzle 3 are connected through the connecting pipe 6. The accommodating tube 2 and the nozzle 3 are connected by setting the connecting pipe 6.

[0027] A spring 7 is fixedly connected to one side of the piston 5, and the end of the spring 7 away from the piston 5 is fixedly connected to the end cover 4. The piston 5 fits the inner wall of the accommodating tube 2 away from the end cover 4. A connecting hole 8 is opened on the front of the piston 5. The spring 7 can be set to reset the piston 5. By setting the connecting hole 8, the combustible gas can flow to the nozzle 3 when the piston 5 moves.

[0028] A blocking block 9 is fixedly connected to the front of the piston 5, and the blocking block 9 is inserted into the connecting pipe 6 for sealing. By setting the blocking block 9, the connecting pipe 6 is blocked under normal conditions, and at the same time, the spring 7 generates pressure on the piston 5, so that the connecting pipe 6 is tightly blocked.

[0029] The driving member is a pull rope 10, which drives the piston 5 to move toward the end cover 4 so that the combustible gas enters the nozzle 3 through the connecting hole 8 and the connecting pipe 6. The pull rope 10 can be provided to drive the piston 5 to move.

[0030] A handle 11 is fixedly connected to the lower surface of the bracket 1, and a pull handle 12 is slidably connected to the lower surface of the bracket 1. The end of the pull rope 10 away from the piston 5 is fixedly connected to the pull handle 12. By setting the handle 11 and the pull handle 12, it is convenient to pull one end of the pull rope 10.

[0031] Two first steering blocks 13 are fixedly connected to the side surfaces of the end cover 4, a through hole is arranged inside the bracket 1, an installation groove is opened on the lower surface of the bracket 1, the pull rope 10 passes through the through hole handle and extends into the installation groove, and a second steering block 14 is fixedly connected to the inner wall of the installation groove. The first steering block 13 and the second steering block 14 are arranged to facilitate the movement of the pull rope 10.

[0032] An injection pipe 15 is fixedly connected to the surface of the accommodating cylinder 2 , and a one-way valve 16 is fixedly connected to the surface of the injection pipe 15 . The cooperation between the injection pipe 15 and the one-way valve 16 facilitates the injection of combustible gas into the accommodating cylinder 2 .

[0033] Working principle: When the test device for combustible gas detector is used, the user first injects combustible gas into the containing tube. The one-way valve 16 ensures that the injected combustible gas cannot flow outward from the injection tube 15. Then the user holds the handle 11 and makes the end of the nozzle 3 located below the combustible gas detector. Then the pull handle 12 is pulled. The pull handle 12 drives one end of the pull rope 10 to move, and then the pull rope 10 drives the piston 5 to move toward the end cover 4, so that the space between the piston 5 and the end cover 4 becomes smaller and the pressure becomes larger. The combustible gas inside flows into the front side of the piston 5 through the connecting hole 8. At the same time, the movement of the piston 5 drives the blocking block 9 to move to open the connecting tube 6. The combustible gas enters the nozzle 3 through the connecting tube 6 and is ejected for testing the combustible gas detector. The combustible gas is released in a mechanical way. Compared with the prior art, it can adapt to some explosive and hazardous places.

[0034] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0035] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A test device for a combustible gas detector, characterized in that: The invention comprises a bracket (1), wherein a communicating receiving tube (2) and a nozzle (3) are fixedly connected inside the bracket (1), an end cover (4) is fixedly connected to the inner wall of the receiving tube (2), a piston (5) is slidably connected to the inner wall of the receiving tube (2), the piston (5) moves so that combustible gas can be sprayed out through the nozzle (3), and a driving member is fixedly connected to one side of the piston (5).

2. A test device for a combustible gas detector according to claim 1, characterized in that: A connecting pipe (6) is fixedly connected to the front end of the accommodating cylinder (2), one end of the connecting pipe (6) is fixedly connected to the nozzle (3), and the accommodating cylinder (2) and the nozzle (3) are connected via the connecting pipe (6).

3. A test device for a combustible gas detector according to claim 1, characterized in that: A spring (7) is fixedly connected to one side of the piston (5); an end of the spring (7) away from the piston (5) is fixedly connected to the end cover (4); the piston (5) is in contact with the inner wall of the accommodating cylinder (2) away from the end cover (4); and a connecting hole (8) is provided on the front side of the piston (5).

4. A test device for a combustible gas detector according to claim 2, characterized in that: A blocking block (9) is fixedly connected to the front side of the piston (5), and the blocking block (9) is inserted into the connecting pipe (6) for sealing.

5. A test device for a combustible gas detector according to claim 1, characterized in that: The driving member is a pull rope (10), and the pull rope (10) drives the piston (5) to move in a direction close to the end cover (4) so ​​that the combustible gas enters the nozzle (3) through the connecting hole (8) and the connecting pipe (6).

6. A test device for a combustible gas detector according to claim 5, characterized in that: A handle (11) is fixedly connected to the lower surface of the bracket (1), a pull handle (12) is slidably connected to the lower surface of the bracket (1), and one end of the pull rope (10) away from the piston (5) is fixedly connected to the pull handle (12).

7. A test device for a combustible gas detector according to claim 6, characterized in that: Two first steering blocks (13) are fixedly connected to the side surfaces of the end cover (4), a through hole is provided inside the bracket (1), a mounting groove is provided on the lower surface of the bracket (1), the pull rope (10) passes through the through hole handle and extends into the mounting groove, and a second steering block (14) is fixedly connected to the inner wall of the mounting groove.

8. A test device for a combustible gas detector according to claim 1, characterized in that: An injection pipe (15) is fixedly connected to the surface of the containing cylinder (2), and a one-way valve (16) is fixedly connected to the surface of the injection pipe (15).

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