Testing device of combustible gas detector

Abstract

The utility model relates to the technical field of combustible gas detector testing auxiliary devices, in particular to a combustible gas detector testing device which comprises a bottle body and a gas inlet pipe, and the bottle body is provided with an inner cavity, a gas inlet and a top opening. A gas diffusion disc is arranged in the inner cavity, a gas collection cavity and a plurality of gas outlets are formed in the gas diffusion disc, and the gas collection cavity is communicated with the inner cavity through the gas outlets; the air inlet pipe penetrates through the air inlet and communicates with the air outlet through the air collecting cavity. The utility model overcomes the defects in the prior art that the glass bottle is manually shaken to volatilize kerosene to simulate kerosene leakage, which is time-consuming and labor-consuming, and the test result is not accurate enough due to small amount of volatile oil, and can generate bubbles in the inner cavity of the bottle body, so that the surface area and molecular kinetic energy of the kerosene are both increased, and the test accuracy is improved. Therefore, the volatilization amount of kerosene is increased, time and labor are saved, and the accuracy of the test result of the combustible gas detector can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustible gas detector test auxiliary devices, and more specifically, to a combustible gas detector test device. Background Art

[0002] Aviation kerosene is a flammable liquid. To prevent large-scale leakage, combustible gas detectors need to be installed at each release source in the production process site to provide timely warnings when leakage occurs. To ensure that the combustible gas detectors work properly, they need to be tested regularly.

[0003] In the prior art, the detection method of the combustible gas detector is to use a glass bottle to hold an appropriate amount of aviation kerosene, and continuously shake the glass bottle to accelerate the volatilization rate of the kerosene in the glass bottle, and use the volatilized kerosene vapor to simulate the leaked kerosene vapor. If the combustible gas detector alarms, it means that the detector can be used normally.

[0004] However, due to the low volatile amount of kerosene under this test method, it is difficult to reach the alarm concentration of the detector, especially in winter, resulting in inaccurate test results. In addition, this test method requires manual continuous shaking of the glass bottle, which also needs to last for at least 5 minutes in summer, which is labor-intensive and prone to kerosene splashing. Utility Model Content

[0005] In view of the problem that the above-mentioned prior art manually shakes the glass bottle to volatilize kerosene to simulate kerosene leakage, which is not only time-consuming and labor-intensive, but also leads to inaccurate test results due to the small amount of volatile oil, the utility model provides a test device for a combustible gas detector, which can continuously generate high-concentration kerosene vapor to simulate the high-concentration oil vapor environment in the event of aviation kerosene leakage, which not only saves time and labor, but also improves the accuracy of the test results.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0007] A testing device for a combustible gas detector comprises a bottle body and an air inlet pipe, wherein the bottle body is provided with an inner cavity, an air inlet port and a top port both of which are connected to the inner cavity; a gas diffusion plate is provided in the inner cavity, and a gas collecting cavity and a plurality of air outlets are provided on the gas diffusion plate, and the gas collecting cavity is connected to the inner cavity through the air outlets; the air inlet pipe passes through the air inlet and is connected to the air outlets through the air collecting cavity.

[0008] In the above technical solution, when testing the combustible gas detector, first pour a proper amount of kerosene into the inner cavity of the bottle body so that the kerosene covers the gas diffusion disk; then transport gas to the gas collecting cavity of the gas diffusion disk through the air inlet pipe, and the gas in the gas collecting cavity is discharged through the gas outlet, thereby generating bubbles inside the kerosene; the bubbles can increase the surface area of ​​the kerosene and the molecular kinetic energy of the kerosene, thereby increasing the volatilization speed of the kerosene to volatilize a higher concentration of kerosene vapor. The volatilized kerosene in the inner cavity is finally discharged through the top port. The whole process does not require manual shaking of the bottle body, which not only saves time and effort, but also can more realistically simulate the high-concentration oil vapor environment caused by kerosene leakage, thereby improving the accuracy of the test results of the combustible gas detector.

[0009] Preferably, an aeration diffuser is installed on each of the gas outlets. The gas discharged from the gas outlet can enter the aeration diffuser, and a large number of tiny bubbles are formed by the aeration diffuser and released into the inner cavity. This can further increase the surface area of ​​kerosene and further increase the molecular kinetic energy of kerosene, thereby further improving the volatilization speed and volatilization concentration of kerosene. Since the aeration diffuser is a prior art, its specific structure will not be further described.

[0010] Preferably, the gas diffusion plate is installed at the bottom of the inner cavity. After the gas diffusion plate is installed at the bottom of the inner cavity, the bubbles rise from the bottom of the inner cavity, which can drive the kerosene at the bottom of the inner cavity to rise together, so that the kerosene in the entire inner cavity can fully contact with the bubbles, which is conducive to promoting the volatilization of the kerosene.

[0011] Preferably, a sealing cover is detachably connected to the top opening, and the sealing cover is used to close the top opening. After the test is completed, the sealing cover is covered on the top opening to close the top opening, which can avoid waste caused by continued volatilization of kerosene and prevent foreign impurities from falling into the inner cavity to block the aeration diffuser. In addition, before the test, the sealing cover can be covered and the bottle body can be shaken to make the inner wall of the inner cavity full of kerosene, and then the sealing cover can be opened to accelerate the volatilization of kerosene.

[0012] The sealing cover and the bottle body may be connected in a snap-fit ​​connection, an interference fit, a threaded connection or via a connector.

[0013] Preferably, the sealing cover is threadedly connected to the bottle body. The sealing cover threadedly connected to the bottle body has better sealing performance, is more firm and reliable, is less likely to leak kerosene, and is more convenient and quick to open and close.

[0014] Preferably, a gas one-way valve is provided on the intake pipe. After the gas one-way valve is provided, the gas can only diffuse from the intake end of the intake pipe into the gas collecting chamber, and cannot flow back from the gas collecting chamber to the intake end of the intake pipe, so as to avoid kerosene leakage caused by reverse suction of the external gas source during the process of supplying gas to the intake pipe.

[0015] The bottle body can be made of materials such as polyethylene, glass or stainless steel.

[0016] Preferably, the bottle body is made of stainless steel, which has high strength and hardness, is corrosion-resistant and has a longer service life.

[0017] Preferably, the bottle body is provided with a perspective portion, through which a worker can observe the kerosene level in the inner cavity so as to add kerosene to the inner cavity in time.

[0018] Since kerosene will continuously generate friction against the inner wall of the inner cavity, the bottle body will carry a certain amount of static electricity. If the static electricity is not discharged in time, electric sparks may be generated and cause fire. Therefore, preferably, the test device also includes an electrostatic clamp and an electrostatic release line connected to the electrostatic clamp, and the electrostatic release line is connected to the outside of the bottle body. The electrostatic clamp is clamped at a place with zero potential such as a grounding pile, and the static electricity carried by the bottle body can be safely released through the electrostatic release line, avoiding safety risks caused by static electricity on the bottle body. Both the electrostatic clamp and the electrostatic release line are prior art, so the specific structures of the two are not further described.

[0019] Preferably, a holding portion is provided on the outside of the bottle body, which is convenient for the staff to hold the device, and the holding portion can be a handle, a handle or a handle.

[0020] It should be noted that the device is not limited to holding kerosene, but can also hold most volatile flammable liquids and generate corresponding steam for testing.

[0021] Beneficial effects of the utility model:

[0022] (1) The air source connected to the air inlet pipe is used to supply air to the gas diffusion disk to generate bubbles in the inner cavity of the bottle, thereby increasing the surface area and molecular kinetic energy of the kerosene, thereby increasing the volatilization amount of the kerosene. This not only saves time and effort, but also can more realistically simulate the high-concentration oil vapor environment caused by kerosene leakage, thereby improving the accuracy of the test results of the combustible gas detector.

[0023] (2) An aeration diffuser is installed at the outlet of the gas diffusion disk to generate a large number of tiny bubbles in the inner cavity, thereby further accelerating the volatilization of kerosene.

[0024] (3) A sealing cap is provided at the top of the bottle body, and the top can be closed after the test is completed to avoid waste caused by continued volatilization of kerosene and to prevent foreign impurities from falling into the inner cavity and clogging the aeration diffuser.

[0025] (4) A gas one-way valve is provided on the air intake pipe to prevent kerosene leakage caused by back suction of the external air source during the process of supplying air to the air intake pipe.

[0026] (5) The bottle body is made of stainless steel and has a long service life. At the same time, the static electricity carried by the bottle body can be safely released by setting an static clamp and a static release line, thereby eliminating the potential safety risks caused by static electricity.

[0027] (6) A transparent portion is provided on the bottle body, which makes it convenient for the staff to check the kerosene level so as to add kerosene to the inner cavity in time.

[0028] (7) A holding portion is provided on the outside of the bottle body, which makes the device more convenient to hold. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the external structure of a test device for a combustible gas detector;

[0030] Figure 2 It is a schematic diagram of the internal structure of a test device for a combustible gas detector;

[0031] Figure 3 The present invention is a schematic diagram of the internal structure of a test device for a combustible gas detector.

[0032] In the attached figure: 1-bottle body; 101-inner cavity; 102-air inlet; 103-top opening; 104-perspective part; 2-air inlet pipe; 3-gas diffusion disk; 301-gas collecting cavity; 302-air outlet; 4-aeration diffuser; 5-sealing cover; 6-gas one-way valve; 7-static clamp; 8-static release line; 9-holding part. DETAILED DESCRIPTION

[0033] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0036] Example 1

[0037] Combination Figures 1 to 3 A test device for a combustible gas detector shown in the figure includes a bottle body 1 and an air inlet pipe 2, the bottle body 1 is provided with an inner cavity 101 and an air inlet 102 and a top port 103 both of which are connected to the inner cavity 101; a gas diffusion plate 3 is provided in the inner cavity 101, a gas collecting cavity 301 is provided on the gas diffusion plate 3 and a plurality of air outlets 302 are provided on the top thereof, the air collecting cavity 301 is connected to the inner cavity 101 through the air outlets 302; the air inlet pipe 2 passes through the air inlet 102 and is connected to the air outlets 302 through the air collecting cavity 301.

[0038] Furthermore, an aeration diffuser 4 is installed on each gas outlet 302. The gas discharged from the gas outlet 302 can enter the aeration diffuser 4, and a large number of tiny bubbles are formed by the aeration diffuser 4 and released into the inner cavity 101. In this way, the surface area of ​​kerosene can be further increased, and the molecular kinetic energy of kerosene can be further increased, thereby further improving the volatilization speed and volatilization concentration of kerosene. Since the aeration diffuser 4 is a prior art, its specific structure will not be further described.

[0039] Furthermore, the gas diffusion plate 3 is installed at the bottom of the inner cavity 101. The bubbles rise from the bottom of the inner cavity 101, which can drive the kerosene at the bottom of the inner cavity 101 to rise together, so that the kerosene in the entire inner cavity 101 can fully contact with the bubbles, thereby promoting the volatilization of the kerosene.

[0040] The working principle or workflow of this embodiment is as follows: when detecting the combustible gas detector, first pour a proper amount of kerosene into the inner cavity 101 of the bottle body 1 so that the kerosene covers the aeration diffuser 4; then the gas is transported to the gas collecting cavity 301 of the gas diffusion disk 3 through the air inlet pipe 2, and the gas in the gas collecting cavity 301 enters the aeration diffuser 4 through the gas outlet 302, and a large number of tiny bubbles are generated in the inner cavity 101 through the aeration diffuser 4; these tiny bubbles can increase the surface area of ​​kerosene and the molecular kinetic energy of kerosene, thereby increasing the volatilization speed of kerosene and volatilizing a higher concentration of kerosene vapor. The volatilized kerosene in the inner cavity 101 is finally discharged into the atmosphere through the top port 103.

[0041] It should be noted that the device is not limited to holding kerosene, but can also hold most volatile flammable liquids and generate corresponding steam for testing.

[0042] Beneficial effects of this embodiment:

[0043] (1) The air source connected to the air inlet pipe is used to supply air to the gas diffusion disk to generate bubbles in the inner cavity of the bottle, thereby increasing the surface area and molecular kinetic energy of the kerosene, thereby increasing the volatilization amount of the kerosene. This not only saves time and effort, but also can more realistically simulate the high-concentration oil vapor environment caused by kerosene leakage, thereby improving the accuracy of the test results of the combustible gas detector.

[0044] (2) An aeration diffuser is installed at the outlet of the gas diffusion disk to generate a large number of tiny bubbles in the inner cavity, thereby further accelerating the volatilization of kerosene.

[0045] Example 2

[0046] This embodiment is based on embodiment 1. Figure 1 and Figure 3 As shown, the top opening 103 is detachably connected with a sealing cover 5, which is used to close the top opening 103. After the test is completed, the sealing cover 5 is covered on the top opening 103 to close the top opening 103, which can avoid the waste caused by the continued volatilization of kerosene, and can also prevent foreign impurities from falling into the inner cavity 101 to block the aeration diffuser 4. In addition, before the test, the sealing cover 5 can be covered and the bottle body 1 can be shaken to make the inner wall of the inner cavity 101 full of kerosene, and then the sealing cover 5 can be opened to accelerate the volatilization of kerosene.

[0047] Specifically, the sealing cap 5 is threadedly connected to the bottle body 1. The sealing cap 5 threadedly connected to the bottle body 1 has good sealing performance, is more firm and reliable, is not prone to kerosene leakage, and is easy to open and close.

[0048] Furthermore, a gas one-way valve 6 is provided on the air inlet pipe 2, and the gas one-way valve 6 is located outside the bottle body 1. After the gas one-way valve 6 is provided, the gas can only diffuse from the air inlet end of the air inlet pipe 2 into the gas collecting chamber 301, and cannot flow back from the gas collecting chamber 301 to the air inlet end of the air inlet pipe 2, so that kerosene leakage caused by reverse suction of the external air source during the process of supplying air to the air inlet pipe 2 can be avoided.

[0049] The beneficial effects of this embodiment compared to embodiment 1 are as follows:

[0050] (1) A sealing cap is provided at the top of the bottle body, and the top can be sealed after the test to avoid waste caused by continued volatilization of kerosene and to prevent foreign impurities from falling into the inner cavity and clogging the aeration diffuser.

[0051] (2) A gas one-way valve is provided on the air intake pipe to prevent kerosene leakage caused by back suction of the external air source during the process of supplying air to the air intake pipe.

[0052] The other features, working principles and beneficial effects of this embodiment are consistent with those of Embodiment 1.

[0053] Example 3

[0054] This embodiment is based on the embodiment 2, combined with Figure 1 and Figure 3 As shown, the bottle body 1 is made of stainless steel. The bottle body 1 made of stainless steel has high strength and hardness, is not easily deformed or damaged after being bumped, and is not easily corroded by long-term contact with kerosene, and has a longer service life.

[0055] Furthermore, the bottle body 1 is provided with a perspective portion 104 . The staff can observe the kerosene level in the inner cavity 101 through the perspective portion 104 , so as to add kerosene into the inner cavity 101 in time.

[0056] Specifically, the perspective portion 104 is disposed near the top of the aeration diffuser 4 . When no kerosene can be observed through the perspective portion 104 , it indicates that kerosene needs to be immediately added into the inner cavity 101 .

[0057] Since kerosene in the inner cavity 101 will continuously generate friction with the inner wall of the inner cavity 101, the bottle body 1 will carry a certain amount of static electricity. If the static electricity is not discharged in time, electric sparks may be generated and cause fire. Therefore, further, the test device also includes an electrostatic clamp 7 and an electrostatic release line 8 connected to the electrostatic clamp 7, and the electrostatic release line 8 is connected to the outside of the bottle body 1. By clamping the electrostatic clamp 7 at a place with zero potential such as a grounding pile, the static electricity carried by the bottle body 1 can be safely released through the electrostatic release line 8, avoiding the safety risks caused by the static electricity of the bottle body 1.

[0058] Since the electrostatic clamp 7 and the electrostatic release line 8 are both existing technologies, their specific structures will not be further described.

[0059] Furthermore, a holding portion 9 is provided on the outside of the bottle body 1. Specifically, two holding portions 9 are provided, one is a handle structure provided on the side of the bottle body 1, and the other is a handle structure provided on the top of the bottle body 1. The handle structure is rotatably connected to the bottle body 1, and the rotation axis of the handle structure is parallel to the bottom surface of the bottle body 1. Providing two holding portions 9 with different structures can not only facilitate the staff to hold the device, but also select a suitable holding method according to actual needs.

[0060] The beneficial effects of this embodiment compared to embodiment 2 are as follows:

[0061] (1) The bottle body is made of stainless steel and has a long service life. At the same time, the static electricity carried by the bottle body can be safely released by setting an static clamp and a static release line, thereby eliminating the potential safety risks caused by static electricity.

[0062] (2) A transparent portion is provided on the bottle body, which makes it convenient for the staff to check the kerosene level so as to add kerosene to the inner cavity in time.

[0063] (3) A holding portion is provided on the outside of the bottle body, which makes the device more convenient to hold.

[0064] The other features, working principles and beneficial effects of this embodiment are consistent with those of Embodiment 2.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description, and it is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A test device for a combustible gas detector, characterized in that: The invention comprises a bottle body (1) and an air inlet pipe (2), wherein the bottle body (1) is provided with an inner cavity (101), an air inlet port (102) and a top port (103) both of which are connected to the inner cavity (101); a gas diffusion plate (3) is provided in the inner cavity (101), and a gas collecting cavity (301) and a plurality of gas outlets (302) are provided on the gas diffusion plate (3), and the gas collecting cavity (301) is connected to the inner cavity (101) through the gas outlets (302); the air inlet pipe (2) passes through the air inlet port (102), and the air inlet pipe (2) is connected to the gas outlets (302) through the air collecting cavity (301).

2. A combustible gas detector testing device according to claim 1, characterized in that: An aeration diffuser (4) is installed on each of the air outlets (302).

3. A combustible gas detector testing device according to claim 1, characterized in that: The gas diffusion plate (3) is installed at the bottom of the inner cavity (101).

4. A combustible gas detector testing device according to claim 1, characterized in that: A sealing cover (5) is detachably connected to the top opening (103), and the sealing cover (5) is used to close the top opening (103).

5. A combustible gas detector testing device according to claim 4, characterized in that: The sealing cover (5) is threadably connected to the bottle body (1).

6. A combustible gas detector testing device according to claim 1, characterized in that: The air inlet pipe (2) is provided with a gas one-way valve (6).

7. A combustible gas detector testing device according to claim 1, characterized in that: The bottle body (1) is made of stainless steel.

8. A combustible gas detector testing device according to claim 7, characterized in that: The bottle body (1) is provided with a perspective portion (104).

9. The combustible gas detector testing device according to claim 7, characterized in that: It also includes an electrostatic clamp (7) and an electrostatic release line (8) connected to the electrostatic clamp (7), and the electrostatic release line (8) is connected to the outside of the bottle body (1).

10. A combustible gas detector testing device according to any one of claims 1 to 9, characterized in that: The bottle body (1) is provided with a holding portion (9) outside.

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