CN212844217U - Quick helium leak detection device for LNG vehicle-mounted bottle - Google Patents
Quick helium leak detection device for LNG vehicle-mounted bottle Download PDFInfo
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- CN212844217U CN212844217U CN202021468908.2U CN202021468908U CN212844217U CN 212844217 U CN212844217 U CN 212844217U CN 202021468908 U CN202021468908 U CN 202021468908U CN 212844217 U CN212844217 U CN 212844217U
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Abstract
The utility model discloses a quick helium leak hunting device of on-vehicle bottle of LNG, manage to find time the helium leak hunting pipeline including the shunting, the shunting is managed to find time the helium leak hunting pipeline and is included the main line, is connected with a plurality of branch pipelines on the main line, is connected with stainless steel hose on the branch pipeline, and stainless steel hose's end connection has to manage to find time the helium leak hunting quick coupling assembling. The evacuated helium leak detection quick connecting assembly comprises a metal connecting sleeve, a natural rubber sleeve is connected onto the metal connecting sleeve, the natural rubber sleeve comprises a middle pipe sleeve, a connecting pipe sleeve is arranged at the front part of the middle pipe sleeve, a fixing pipe sleeve is arranged at the rear part of the middle pipe sleeve, the connecting pipe sleeve is sleeved at the rear part of the metal connecting sleeve and fixed on the metal connecting sleeve through a first hose clamp, and a second hose clamp is arranged on the fixing pipe sleeve; the front end of the metal connecting sleeve is provided with a connecting pipe which can be fixedly connected with the stainless steel hose. The device is convenient to assemble, assemble and disassemble, simple in structure and convenient to operate, and accuracy of helium leakage detection efficiency is greatly improved.
Description
Technical Field
The utility model relates to a LNG on-vehicle bottle field of hunting leak, concretely relates to quick helium leak hunting device of LNG on-vehicle bottle.
Background
The LNG vehicle-mounted gas cylinder is widely applied to vehicles such as heavy trucks, passenger cars and ships. The gas cylinder as a high-vacuum cryogenic heat-insulating container has extremely strict production and manufacturing requirements, particularly has extremely high requirements on the leakage rate of the liner and the interlayer, and is qualified when the leakage rate is lower than 6 x 10 < -8 > Pa.m 3/s according to standard requirements. The principle of the vacuum helium leak detection is that helium gas is used as tracer gas, the helium gas is filled outside a workpiece, helium molecules leaking into a vacuum cavity in the workpiece are detected through a series of ionization treatments of a helium mass spectrometer leak detector, and therefore leak rate is indicated, so that leak detection can be carried out only by evacuating a detected piece before helium spraying and leak detection to enable the internal vacuum degree of the detected piece to be lower than a certain vacuum degree standard (such as 2 Pa). When the helium leakage of the inner container is detected, air is required to be pumped from a communicating pipeline on the distributor, when the helium leakage of the interlayer is detected, air is required to be pumped from an air pumping port of the air bottle, the larger the volume of the air bottle is, the maximum volume of the air bottle in the current market can reach 1350L, but the diameters of a communicating hole and the air pumping port of the distributor are very small, so that the pumping time is long, and the leakage detection efficiency is low. And the existing helium leakage detection sealing device has complex clamping and poor sealing effect, and the helium leakage detection efficiency is also greatly reduced. Therefore, the research on the quick helium leakage detection device and method for the LNG vehicle-mounted bottle can effectively solve the problem of leakage detection efficiency, and is urgently needed to be solved in the industry.
SUMMERY OF THE UTILITY MODEL
To the problem that current on-vehicle bottle leak hunting process evacuation time is long, leak hunting inefficiency of LNG, the utility model provides a quick helium leak hunting device of on-vehicle bottle of LNG can show and reduce evacuation time, improve leak hunting efficiency to solve helium leak hunting device and receive environmental impact and sealing performance poor, operate complicacy, wasting of resources scheduling problem.
The utility model adopts the following technical proposal:
a quick helium leak detection device for an LNG vehicle-mounted bottle comprises a shunting type evacuation helium leak detection pipeline, wherein the shunting type evacuation helium leak detection pipeline comprises a main pipeline, a plurality of branch pipelines are connected to the main pipeline, stainless steel hoses are connected to the branch pipelines, and the end parts of the stainless steel hoses are connected with an evacuation helium leak detection quick connection assembly;
the evacuated helium leak detection quick connecting assembly comprises a metal connecting sleeve, a natural rubber sleeve is connected onto the metal connecting sleeve, the natural rubber sleeve comprises a middle pipe sleeve, a connecting pipe sleeve is arranged at the front part of the middle pipe sleeve, a fixing pipe sleeve is arranged at the rear part of the middle pipe sleeve, the connecting pipe sleeve, the middle pipe sleeve and the fixing pipe sleeve are of an integrated structure, the connecting pipe sleeve is sleeved at the rear part of the metal connecting sleeve and fixed on the metal connecting sleeve through a first hose clamp, and a second hose clamp is arranged on the fixing pipe sleeve; the front end of the metal connecting sleeve is provided with a connecting pipe which can be fixedly connected with the stainless steel hose.
Preferably, the branch pipeline is fixedly connected with the stainless steel hose through a flange.
Preferably, the device further comprises an evacuation pump, and the evacuation pump is connected with the main pipeline.
Preferably, the connecting pipe is communicated with the metal connecting sleeve.
Preferably, the system further comprises a helium mass spectrometer leak detector, and the helium mass spectrometer leak detector is connected with the main pipeline.
The utility model has the advantages that:
the utility model provides a quick helium leak hunting device of LNG vehicle-mounted bottle, not only assembly installation is dismantled conveniently, but also can carry out the evacuation operation of a plurality of LNG vehicle-mounted bottles once, is showing to improve and evacuates efficiency, flange, evacuation helium leak hunting quick coupling assembling, stainless steel hose's use, not only connect convenient quick but also sealing performance strengthens, the security performance strengthens, makes evacuation helium leak hunting operation succinct, quick; the natural rubber sleeve is not influenced by environmental factors, has good sealing performance and long service life, is simple to connect and install with the detected piece and is convenient to operate. The utility model discloses simple structure, convenient operation provides the accuracy of helium leak hunting efficiency greatly.
Drawings
Fig. 1 is a schematic diagram of a fast helium leak detection device for an LNG vehicle-mounted bottle.
Figure 2 is a schematic view of an evacuated helium leak test quick connect assembly.
Figure 3 is a cross-sectional view of the evacuated helium leak test quick connect assembly connected to a test piece.
Detailed Description
The utility model is described in detail with the following figures:
combine fig. 1 to 3, a quick helium leak hunting device of on-vehicle bottle of LNG, including the shunting helium leak hunting pipeline of managing to find time, the shunting is managed to find time the helium leak hunting pipeline and is included main line 1, is connected with a plurality of branch pipelines 2 on the main line, is connected with stainless steel hose 3 on the branch pipeline, and stainless steel hose's end connection has the quick coupling assembling 4 of helium leak hunting of managing to find time.
The evacuated helium leak detection quick connecting assembly can be fixedly connected with the detected piece 5.
Wherein, the branch pipeline 2 is fixedly connected with the stainless steel hose 3 through a flange 6.
The evacuated helium leak detection quick connection assembly comprises a metal connection sleeve 7, a natural rubber sleeve is connected to the metal connection sleeve, the natural rubber sleeve comprises a middle pipe sleeve 8, a connection pipe sleeve 9 is arranged at the front part of the middle pipe sleeve, and a fixing pipe sleeve 10 is arranged at the rear part of the middle pipe sleeve.
The connecting pipe sleeve, the middle pipe sleeve and the fixing pipe sleeve are of an integrated structure, the connecting pipe sleeve is sleeved on the rear portion of the metal connecting sleeve and fixed on the metal connecting sleeve through a first hose clamp 11, and a second hose clamp 12 is arranged on the fixing pipe sleeve.
The natural rubber sleeve is sleeved on the detected piece, and the fixing pipe sleeve and the detected piece are fixed through the second hose clamp, so that the quick connection assembly for evacuating the helium leakage is fixedly connected with the detected piece.
The natural rubber sleeve is not influenced by environmental factors, has good sealing performance and long service life, is connected and installed with the detected piece through the second hose clamp, is firm in connection, has high strength and is convenient to operate.
The front end of the metal connecting sleeve is provided with a connecting pipe 13 which is communicated with the metal connecting sleeve. The connecting pipe can be fixedly connected with the stainless steel hose.
The split-flow evacuation helium leak detection pipeline, the stainless steel hose and the evacuation helium leak detection quick connecting assembly are simple to install and disassemble.
The apparatus further comprises an evacuation pump 14 connected to the main conduit.
The vacuumizing pump can vacuumize a plurality of detected parts simultaneously through the shunting type evacuation helium leak detection pipeline, the stainless steel hose and the evacuation helium leak detection quick connecting assembly, and the vacuumizing efficiency is greatly improved.
The device also comprises a helium mass spectrometer leak detector 15 which is connected with the main pipeline.
After the detected piece is vacuumized, the detected piece is subjected to leak detection operation one by one, helium is applied to the outer surface of the detected piece, when leak holes exist in the surface of the detected piece, the helium enters the detected piece through the leak holes, and then enters the helium mass spectrometer leak detector 15 through the evacuation helium leak detection quick connecting assembly, the stainless steel hose and the shunt evacuation helium leak detection pipeline, so that the leak measurement of the detected piece is realized.
The utility model discloses simple structure, convenient operation provides the accuracy of helium leak hunting efficiency greatly.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. The quick helium leak detection device for the LNG vehicle-mounted bottle is characterized by comprising a shunting type evacuation helium leak detection pipeline, wherein the shunting type evacuation helium leak detection pipeline comprises a main pipeline, a plurality of branch pipelines are connected to the main pipeline, stainless steel hoses are connected to the branch pipelines, and an evacuation helium leak detection quick connection assembly is connected to the end parts of the stainless steel hoses;
the evacuated helium leak detection quick connecting assembly comprises a metal connecting sleeve, a natural rubber sleeve is connected onto the metal connecting sleeve, the natural rubber sleeve comprises a middle pipe sleeve, a connecting pipe sleeve is arranged at the front part of the middle pipe sleeve, a fixing pipe sleeve is arranged at the rear part of the middle pipe sleeve, the connecting pipe sleeve, the middle pipe sleeve and the fixing pipe sleeve are of an integrated structure, the connecting pipe sleeve is sleeved at the rear part of the metal connecting sleeve and fixed on the metal connecting sleeve through a first hose clamp, and a second hose clamp is arranged on the fixing pipe sleeve; the front end of the metal connecting sleeve is provided with a connecting pipe which can be fixedly connected with the stainless steel hose.
2. The quick helium leak detection device for the LNG vehicle-mounted bottle as claimed in claim 1, wherein the branch pipeline is fixedly connected with a stainless steel hose through a flange.
3. The LNG vehicle-mounted bottle rapid helium leak detection device according to claim 1, further comprising a vacuum pumping pump, wherein the vacuum pumping pump is connected with the main pipeline.
4. The LNG vehicle-mounted bottle rapid helium leak detection device as claimed in claim 1, wherein the connecting pipe is communicated with a metal connecting sleeve.
5. The quick helium leak detection device for the LNG vehicle-mounted bottle as claimed in claim 1, further comprising a helium mass spectrometer leak detector, wherein the helium mass spectrometer leak detector is connected with the main pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468908.2U CN212844217U (en) | 2020-07-23 | 2020-07-23 | Quick helium leak detection device for LNG vehicle-mounted bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468908.2U CN212844217U (en) | 2020-07-23 | 2020-07-23 | Quick helium leak detection device for LNG vehicle-mounted bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212844217U true CN212844217U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021468908.2U Active CN212844217U (en) | 2020-07-23 | 2020-07-23 | Quick helium leak detection device for LNG vehicle-mounted bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212844217U (en) |
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2020
- 2020-07-23 CN CN202021468908.2U patent/CN212844217U/en active Active
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