CN215985056U - Helium leakage detection device for cylinder valve - Google Patents

Abstract

The utility model discloses a cylinder valve helium leak detection device, which comprises a cylinder valve, a purging structure, a helium gas supply structure and a gas recovery structure, wherein a gas inlet of the cylinder valve is connected with a first gas pipe by installing a first screw cap, the first gas pipe is connected with the purging structure and the helium gas supply structure, a gas outlet of the cylinder valve is connected with a second gas pipe by installing a second screw cap, the second gas pipe is connected with a third gas pipe and the gas recovery structure, one end of the third gas pipe is installed on a helium detector, a top valve body of the cylinder valve is connected with a fourth gas pipe by installing a valve body clamping sleeve, one end of the fourth gas pipe is installed on the helium detector, the detection precision is improved by using helium as tracer gas, the purging structure is arranged to eliminate environmental influence, further improve the detection stability, and save resources by arranging the recovery structure, the helium utilization rate is improved, and the detection cost is reduced.

Description

Helium leakage detection device for cylinder valve

Technical Field

The utility model relates to the technical field of helium leakage detection, in particular to a cylinder valve helium leakage detection device.

Background

The special equipment called by the special equipment safety law is as follows: boilers, pressure vessels (including gas cylinders), pressure pipelines, elevators, hoisting machinery, passenger ropeways, large amusement facilities, special motor vehicles in factories (factories), and other special equipment which is regulated by laws and administrative laws and regulations and has higher danger on personal and property safety. The special gas cylinder belongs to special equipment, the special gas cylinder generally uses the classification to divide into chemical splendid attire gas cylinder, compressed air gas cylinder (SCBA) etc. generally uses for mill and laboratory when being used for filling the chemicals, fire rescue uses compressed air gas cylinder (SCBA) to provide for the use of breathing gas for the rescuer, the gas tightness inspection after above-mentioned special gas cylinder fills the dress is vital, because stand-by time is long, the phenomenon of seepage exists easily through long-time use of cylinder valve, seriously influence factory building and laboratory safety and can not ensure the rescuer activity duration.

At present, the helium leakage detection device for the bottle valve on the market generally has the following problems: 1. when the leakage is small, the pressure detection method is used, so that the leakage cannot be accurately detected, and the detection accuracy is low; 2. before detection, the bottle valve is not blown and cleaned, and the influence of original background gas in the bottle valve on a detection result is not eliminated; 3. helium is not recovered after detection, so that resource waste is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, an object of the present invention is to provide a cylinder valve helium leak detection apparatus, which uses helium as a trace gas to improve detection accuracy, and simultaneously, a purging structure is provided to eliminate environmental impact, further improve detection stability, and a recovery structure is provided to save resources, improve helium utilization rate, and reduce detection cost.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a bottle valve helium leak detection device, includes the gas bottle valve, sweeps structure, helium gas feed structure and gas recovery structure, the air inlet of gas bottle valve is connected with first trachea through the first screw cap of installation, first trachea connection has sweep the structure with helium gas feed structure, the gas outlet of gas bottle valve is connected with the second trachea through installation second screw cap, the second trachea be connected with the third trachea with gas recovery structure, third trachea one end is installed on the helium detector, be connected with the fourth trachea through installing the valve body cutting ferrule on the top valve body of gas bottle valve, fourth trachea one end is according to installing on the helium detector.

Further, the purging structure comprises a clean gas compression bottle and a first control valve, and the first control valve is installed on a pipeline connecting a gas outlet of the clean gas compression bottle and the first gas pipe.

Furthermore, the helium gas supply structure comprises a helium tank and a second control valve, and the second control valve is installed on a pipeline connected with a gas outlet of the helium tank and the first gas pipe.

Further, the gas recovery structure comprises a gas pump, a gas inlet control valve of the gas pump and a recovery gas bottle.

Furthermore, the air pump air inlet control valve is installed on a pipeline connecting the air pump and the second air pipe, and the recovery air bottle is connected to the air outlet end of the air pump.

Furthermore, a third control valve is mounted on the third air pipe.

Furthermore, a hand valve is arranged at the upper end of the gas cylinder valve, the valve body is sleeved on the hand valve in a clamping mode, meanwhile, the bottom of the valve body is fixedly installed on the upper portion of the valve body, and a fourth control valve is installed on a fourth gas pipe.

Compared with the prior art, the utility model has the following advantages:

(1) according to the helium detection device, the first air pipe is simultaneously connected with the purging structure, the purging structure comprises the clean gas compression bottle and the first control valve, the first control valve needs to be opened and the second control valve of the helium bottle needs to be closed during purging, the gas bottle valve is opened through the hand valve, and the purging gas is discharged through the air outlet, so that background gas in the gas bottle valve is replaced, the influence of the environment on helium detection is eliminated, and the detection accuracy is further improved.

(2) According to the utility model, a first screw cap is arranged at an air inlet of a gas cylinder valve and connected with a first air pipe, a helium gas supply structure is connected with the first air pipe and supplies helium gas into a valve body, the leakage of the valve body is divided into 2 cases, one case is leakage of an air outlet, the other case is leakage of a valve core position at a hand valve, a second screw cap and a valve body clamping sleeve are respectively arranged at the air outlet and the valve core of the hand valve, the second screw cap and the valve body clamping sleeve are respectively connected with a second air pipe and a fourth air pipe, the second air pipe is connected with a third air pipe, and the third air pipe and the fourth air pipe are connected onto a helium detector, so that the high-precision detection of the helium gas is realized, and the detection accuracy is greatly improved.

(3) According to the utility model, after the detection of the gas cylinder valve is finished, the second control valve, the third control valve and the fourth control valve are closed, the air inlet control valve of the air pump is opened, helium in the gas cylinder valve is pumped into the recovered gas cylinder by the air pump to be stored, resources are saved through the structure, the utilization rate of the helium is improved, and the detection cost is reduced.

Drawings

FIG. 1 is a perspective view provided by an embodiment of the present invention;

FIG. 2 is a front view provided by an embodiment of the present invention;

FIG. 3 is a perspective view of a cylinder valve provided in accordance with an embodiment of the present invention;

fig. 4 is a front view of the cylinder valve removed according to an embodiment of the present invention.

In the figure: 1. a valve body; 2. an air inlet; 3. an air outlet; 4. a hand valve; 5. a first screw cap; 6. a first air pipe; 7. cleaning the gas compression bottle; 701. a first control valve; 8. a helium tank; 801. a second control valve; 9. a second screw cap; 10. a second air pipe; 11. an air pump; 1101. an air inlet control valve of the air pump; 12. recovering the gas cylinder; 13. a third air pipe; 1301. a third control valve; 14. a valve body is clamped; 15. a fourth gas pipe; 1501. A fourth control valve; 16. a helium gas detector.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1-4, a cylinder valve helium leak detection device, including the cylinder valve, sweep the structure, helium gas supply structure and gas recovery structure, air inlet 2 of cylinder valve is connected with first trachea 6 through installing first screw cap 5, first trachea 6 is connected with sweeps structure and helium gas supply structure, gas outlet 3 of cylinder valve is connected with second trachea 10 through installing second screw cap 9, second trachea 10 is connected with third trachea 13 and gas recovery structure, third trachea 13 one end is installed on helium detector 16, be connected with fourth trachea 15 through installing valve body cutting ferrule 14 on the top valve body of cylinder valve, fourth trachea 15 one end is according to installing on helium detector 16.

Purging flow: install first spiral shell cap 5 on the air inlet 2 with the gas cylinder valve, open the gas cylinder valve through the hand valve, because of being connected with simultaneously on the first trachea 6 and sweeping structure and helium supply structure, need to close the second control valve 801 that the helium supply structure contains, the first control valve 701 that sweeps the structure and contains is opened, clean gas flows into first trachea 6 by clean gas compression bottle 7, flow into the gas cylinder valve by first trachea 6 again and finally flow out through gas outlet 3, replace the background gas in the gas cylinder valve from this, eliminate the influence that the environment detected to the helium, further promoted the detection accuracy.

Helium supply flow: after the purging process is finished, the first control valve 701 is closed, a second spiral cap 9 and a valve body clamping sleeve are respectively installed on an air outlet 3 and a valve body 1, a gas cylinder valve hand valve 4 and an air pump air inlet control valve 1101 connected with a pipeline of a recovery structure are closed, helium gas flows into a first pipeline 6 from a helium gas cylinder by opening a second control valve 801, then flows into a gas cylinder valve from the first pipeline 6, the gas outlet 3 leaks due to 2 conditions of valve body leakage, the other condition is that the valve body leaks through the valve core position at the hand valve 4, the second spiral cap 9 and the valve body clamping sleeve 14 are respectively installed at the air outlet 3 and the valve core 4 of the hand valve, the second spiral cap 9 and the valve body clamping sleeve 14 are respectively connected with a second gas pipe 10 and a fourth gas pipe 15, the second gas pipe 10 is connected with a third gas pipe 13, the helium gas detector is connected with the helium gas detector through the third gas pipe 13 and the fourth gas pipe 15, and simultaneously, the third control valve 1301 and the fourth control valve 1501 positioned on the third gas pipe 13 and the fourth gas pipe 15 are opened, therefore, helium high-precision detection is realized, and the detection accuracy is greatly improved.

Helium recovery process: after helium leak detection is finished, the second control valve 801, the third control valve 1301 and the fourth control valve 1501 are closed, the hand valve 4, the air pump air inlet control valve 1101 and the air pump 11 are opened, helium enters the second pipeline 10 through air outlet, 3 flows into the recovery air bottle 12 through the air pump 11, and the air pump air inlet control valve 1101 and the air pump 11 are closed after recovery is finished, so that the helium leak detection is finished, resources are saved, the helium utilization rate is improved, and the detection cost is reduced.

As shown in fig. 1 and 2, the purging structure comprises a clean gas compression bottle 7 and a first control valve 701, and the first control valve 701 is installed on a pipeline connecting an air outlet of the clean gas compression bottle 7 and the first air pipe 6.

As shown in fig. 1 and 2, the helium gas supply structure comprises a helium tank 8 and a second control valve 801, and the second control valve 801 is installed on a pipeline connecting an outlet of the helium tank 8 and the first gas pipe 6.

As shown in fig. 1 and 2, the gas recovery structure includes a gas pump 11, a gas pump intake control valve 1101, and a recovery gas cylinder 12.

As shown in fig. 1 and 2, an air pump inlet control valve 1101 is installed on a pipe connecting an air pump 11 and a second air pipe 10, and a recovery air cylinder 12 is connected to an air outlet end of the air pump 11.

As shown in fig. 1 and 2, a third control valve 1301 is mounted on the third air pipe 13.

As shown in fig. 1 and 2, a hand valve 4 is arranged at the upper end of the cylinder valve, a valve body clamping sleeve 14 is sleeved on the hand valve 4, the bottom of the cylinder valve is fixedly installed at the upper part of the valve body 1, and a fourth control valve 1501 is installed on the fourth air pipe 15.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a cylinder valve helium leak hunting device, includes the cylinder valve, sweeps structure, helium gas feed structure and gas recovery structure, its characterized in that: air inlet (2) of gas cylinder valve are connected with first trachea (6) through installing first spiral shell cap (5), first trachea (6) are connected with sweep the structure with helium gas supply structure, gas outlet (3) of gas cylinder valve are connected with second trachea (10) through installing second spiral shell cap (9), second trachea (10) be connected with third trachea (13) with gas recovery structure, third trachea (13) one end is installed on helium detector (16), be connected with fourth trachea (15) through installing valve body cutting ferrule (14) on the top valve body of gas cylinder valve, fourth trachea (15) one end is according to installing on helium detector (16).

2. A cylinder valve helium leak detection apparatus as claimed in claim 1, wherein the purge structure comprises a clean gas compression cylinder (7) and a first control valve (701), the first control valve (701) being mounted on a conduit connecting the outlet of the clean gas compression cylinder (7) to the first gas line (6).

3. The cylinder valve helium leak detection device according to claim 1, wherein the helium gas supply structure comprises a helium tank (8) and a second control valve (801), and the second control valve (801) is installed on a pipeline connecting an outlet of the helium tank (8) and the first gas pipe (6).

4. A cylinder valve helium leak detection apparatus as claimed in claim 3, wherein the gas recovery structure comprises a gas pump (11), a gas pump inlet control valve (1101) and a recovery gas cylinder (12).

5. A cylinder valve helium leak detection apparatus according to claim 4, wherein the air pump inlet control valve (1101) is installed on a pipeline connecting the air pump (11) and the second air pipe (10), and the recovery air cylinder (12) is connected to an outlet end of the air pump (11).

6. A cylinder valve helium leak detection apparatus as claimed in claim 1, characterised in that a third control valve (1301) is mounted on the third gas pipe (13).

7. The helium leak detection device for the cylinder valve as claimed in claim 6, wherein a hand valve (4) is arranged at the upper end of the cylinder valve, the valve body clamping sleeve (14) is sleeved on the hand valve (4), the bottom of the cylinder valve clamping sleeve is fixedly arranged at the upper part of the valve body (1), and a fourth control valve (1501) is arranged on the fourth air pipe (15).

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