Steel cylinder gas purity monitoring device

Abstract

The utility model relates to the technical field of steel cylinder gas safety detection, and particularly discloses a steel cylinder gas purity monitoring device which comprises a steel cylinder, a gas cylinder valve arranged at the top end of the steel cylinder, a sealing cover sleeved outside the top end of the steel cylinder, a top cover in threaded connection with the top of the sealing cover, and a combustible gas alarm communicated with one side of the sealing cover. And an integrated gas detection connector is arranged outside the other side of the sealing cover. According to the device, the sealing cover covers the gas cylinder valve, the combustible gas alarm is arranged to give a leakage alarm, the safety in the gas purity detection process of the steel cylinder is improved, the integrated gas detection connector serves as a transfer connection station of the steel cylinder and the gas purity detection instrument, and the detection efficiency is improved. Part of gas in the steel cylinder is conveyed into the pressure-resistant metal shell to be temporarily stored through the valve body structure, meanwhile, a small part of gas in the pressure-resistant metal shell is conveyed into the gas purity detection instrument to be detected, and only a small amount of gas is introduced for detection, so that the danger coefficient can be reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas cylinder safety detection technology, specifically to a gas cylinder purity monitoring device. Background Technology

[0002] Hydrogen mixed with oxygen / air forms an explosive gas (explosion limits 4%~75% by volume). If the purity is insufficient (e.g., air is mixed in during filling), a leak will cause catastrophic consequences upon contact with an open flame. Therefore, it is necessary to regularly test the purity of hydrogen cylinders. Hydrogen testing requires specialized instruments, which connect the cylinder to the sampling port of the instrument via a pipeline. However, this process cannot guarantee whether there is a hydrogen leak during the test, lacks a control group, and the sampling port of the instrument may be deformed or damaged due to the high pressure of the cylinder. Furthermore, once a leak occurs, a large amount of gas is released, and the safety of the test needs to be improved. Therefore, we propose a cylinder gas purity monitoring device. Utility Model Content

[0003] In view of the above-mentioned technical problems in related technologies, this utility model provides a gas cylinder purity monitoring device that can solve the above problems.

[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0005] A gas purity monitoring device for gas cylinders includes a gas cylinder with a gas cylinder valve at the top. A sealing cover is fitted over the top of the gas cylinder, and a top cap is threadedly connected to the top of the sealing cover. A combustible gas alarm is connected to one side of the sealing cover, and an integrated gas detection connector is installed on the other side of the sealing cover. The integrated gas detection connector includes an outer shell, a valve body A, a pressure-resistant metal shell, and a valve body B, which are sequentially connected in series inside the outer shell. One end of the valve body A is threadedly connected to the gas cylinder valve through an external threaded connecting pipe, and the valve body B is connected to a gas purity detection instrument through a pipe.

[0006] Furthermore, a pressure gauge is connected to the top of the pressure-resistant metal housing, and the display end of the pressure gauge is located outside the outer housing of the integrated gas detection connector.

[0007] Furthermore, the external threaded connecting pipe is connected to the sealing cover through, and a sealing ring is fitted at the point where the external threaded connecting pipe and the sealing cover pass through.

[0008] Furthermore, a rubber ring is fixedly installed at the bottom of the inner wall of the sealing cover, and the rubber ring is in close contact with the outer circumference of the gas cylinder.

[0009] Furthermore, a suction cup is provided at the top of the gas purity detector housing, allowing the gas purity detector to be adsorbed and connected to the housing of the integrated gas detection connector.

[0010] Furthermore, a U-shaped handle is fixedly installed on the top of the cover.

[0011] The beneficial effects of this utility model are as follows: The device of this application covers the gas cylinder valve with a sealing cover and is equipped with a combustible gas alarm to provide a leak alarm, thereby improving the safety of the gas purity detection process. By using an integrated gas detection connector as a transfer station between the gas cylinder and the gas purity detection instrument, the valve body structure is used to transport part of the gas from the gas cylinder to the pressure-resistant metal shell for temporary storage, while a small portion of the gas in the pressure-resistant metal shell is transported to the gas purity detection instrument for detection. Only a small amount of gas is introduced for detection, which can reduce the risk factor and improve safety. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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 these drawings without creative effort.

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the assembly of the gas cylinder purity monitoring device and the gas cylinder.

[0015] Figure 2 This is a schematic diagram of the internal components of the integrated gas detection connector.

[0016] In the picture:

[0017] 1. Gas cylinder; 2. Gas cylinder valve; 3. Sealing cover; 4. Top cover; 401. U-shaped handle; 5. Rubber ring; 6. Combustible gas alarm; 7. Integrated gas detection connector; 8. Valve body A; 9. Pressure gauge; 10. Valve body B; 11. Pipe body; 12. Gas purity testing instrument; 13. External threaded connecting pipe; 14. Pressure-resistant metal housing. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0019] like Figure 1-2As shown, this utility model discloses a gas cylinder purity monitoring device, including a gas cylinder 1, a gas cylinder valve 2 at the top of the gas cylinder 1, a sealing cover 3 on the outside of the top of the gas cylinder 1, a top cover 4 threadedly connected to the top of the sealing cover 3, a combustible gas alarm 6 connected to one side of the sealing cover 3, and an integrated gas detection connector 7 on the outside of the other side of the sealing cover 3. The integrated gas detection connector 7 includes an outer shell, a valve body A8, a pressure-resistant metal shell 14 and a valve body B10 connected in series inside the outer shell, one end of the valve body A8 is threadedly connected to the gas cylinder valve 2 through an external threaded connecting pipe 13, and the valve body B10 is connected to a gas purity detection instrument 12 through a pipe body 11.

[0020] Example 1: The sensor of the combustible gas alarm 6 is a dedicated hydrogen detection sensor. The combustible gas alarm 6 has a built-in sensor signal processor, lithium battery and alarm. The gas cylinder 1 contains hydrogen. The hydrogen purity detection instrument mainly consists of a sensor, signal processing unit, display module, gas injection system, power supply module and alarm module. The sensor is an electrochemical sensor: used for the detection of trace amounts of hydrogen, it generates a current signal through an electrochemical reaction; the signal processing unit converts the analog signal output by the sensor into a digital signal, and performs filtering, amplification and algorithm processing; the power supply module uses a lithium battery.

[0021] In the preferred technical solution, a pressure gauge 9 is connected to the top of the pressure-resistant metal housing 14. The display end of the pressure gauge 9 is located outside the outer housing of the integrated gas detection connector 7. The pressure gauge 9 is a mechanical pressure gauge. Gas enters the gauge body through the interface, and the pressure acts directly on the elastic element. The elastic element deforms due to the pressure (such as bending of the Bourdon tube or bulging of the diaphragm). The deformation is amplified through the gear transmission mechanism, which drives the pointer to indicate the pressure value on the dial. This is used to test the pressure value of the pressure-resistant metal housing 14. The pressure-resistant metal housing 14 is made of stainless steel.

[0022] In the preferred technical solution, the external threaded connecting pipe 13 and the sealing cover 3 are connected through the pipe, and a sealing ring is fitted at the penetration point of the external threaded connecting pipe 13 and the sealing cover 3 to provide sealing protection for the penetration point.

[0023] In the preferred technical solution, a rubber ring 5 is fixedly installed at the bottom of the inner wall of the sealing cover 3. The rubber ring 5 is in close contact with the outer circumferential surface of the gas cylinder 1 to reduce the probability of gas leakage.

[0024] In the preferred technical solution, a suction cup is provided at the top of the housing of the gas purity detector 12, and the gas purity detector 12 is adsorbed and connected to the outer housing of the integrated gas detection connector 7, so that the gas purity detector 12 can be temporarily installed on the outside of the outer housing of the integrated gas detection connector 7.

[0025] In the preferred technical solution, a U-shaped handle 401 is fixedly provided on the top of the top cover 4, which facilitates the rotation, assembly, and disassembly of the top cover 4.

[0026] In practical use, the sealing cover 3 is fitted onto the outer area of ​​the gas cylinder valve 2 of the gas cylinder 1. The top cover 4 is not installed temporarily. The external threaded connecting pipe 13 is threaded into the output port of the gas cylinder valve 2. The valve body A8 and valve body B10 are closed, the gas cylinder valve 2 is opened, and the top cover 4 is installed on top of the sealing cover 3. The combustible gas alarm 6 checks whether the gas cylinder valve 2 is leaking. If there is no leak, the gas sampling port of the gas purity detector 12 is tightened into the pipe body 11. The valve body A8 is opened to guide the gas to the pressure-resistant metal housing 14. The pressure value of the pressure-resistant metal housing 14 is observed. After the set value is reached, the valve body A8 is closed, and the valve body B10 is opened to guide the gas in the pressure-resistant metal housing 14 to the gas purity detector 12 in the pipe body 11 for purity testing.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas purity monitoring device for a gas cylinder, comprising a gas cylinder (1), wherein a gas cylinder valve (2) is provided at the top of the gas cylinder (1), characterized in that: The top of the gas cylinder (1) is fitted with a sealing cover (3), and the top of the sealing cover (3) is threadedly connected to a top cap (4). A combustible gas alarm (6) is connected to one side of the sealing cover (3), and an integrated gas detection connector (7) is provided on the other side of the sealing cover (3). The integrated gas detection connector (7) includes an outer shell, a valve body A (8), a pressure-resistant metal shell (14), and a valve body B (10) connected in series inside the outer shell. One end of the valve body A (8) is threadedly connected to the gas cylinder valve (2) through an external threaded connecting pipe (13), and the valve body B (10) is connected to the gas purity detection instrument (12) through a pipe body (11).

2. The gas purity monitoring device for gas cylinders according to claim 1, characterized in that, A pressure gauge (9) is connected to the top of the pressure-resistant metal housing (14), and the display end of the pressure gauge (9) is located outside the outer housing of the integrated gas detection connector (7).

3. The gas purity monitoring device for gas cylinders according to claim 1, characterized in that, The external threaded connecting pipe (13) is connected to the sealing cover (3) through, and a sealing ring is fitted at the point where the external threaded connecting pipe (13) and the sealing cover (3) pass through.

4. The gas purity monitoring device for gas cylinders according to claim 1, characterized in that, A rubber ring (5) is fixedly provided at the bottom of the inner wall of the sealing cover (3), and the rubber ring (5) is in contact with the outer circumferential surface of the steel cylinder (1).

5. The gas purity monitoring device for gas cylinders according to claim 1, characterized in that, The gas purity detector (12) has a suction cup at the top of its outer shell, and the gas purity detector (12) is adsorbed and connected to the outer shell of the integrated gas detection connector (7).

6. The gas purity monitoring device for gas cylinders according to claim 1, characterized in that, The top cover (4) is fixedly equipped with a U-shaped handle.

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