CN105675225A - Liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool - Google Patents
Liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool Download PDFInfo
- Publication number
- CN105675225A CN105675225A CN201610243863.0A CN201610243863A CN105675225A CN 105675225 A CN105675225 A CN 105675225A CN 201610243863 A CN201610243863 A CN 201610243863A CN 105675225 A CN105675225 A CN 105675225A
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- CN
- China
- Prior art keywords
- dispensing head
- distributing head
- sleeve
- liquefied natural
- pressing plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool. The liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool comprises a distributing head system, a sleeve, a connection joint, an upper pressing plate and a lower pressing plate. The liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool is characterized in that the distributing head system is composed of an outer distributing head, an inner distributing head and a connecting pipe, through holes are formed in the outer distributing head and the inner distributing head, the sleeve is arranged on the outer distributing head, a sealing ring is arranged between the outer distributing head and the sleeve, the connection joint is arranged on the outer distributing head, the upper pressing plate is connected with the lower pressing plate through bolts and nuts, the inner distributing head is arranged in the lower pressing plate, and a sealing sheet is arranged between the inner distributing head and the lower pressing plate. According to the invention, the through hole in the outer distributing head is sealed by the sleeve with the sealing ring, the through holes on the inner distributing head are sealed by the sealing ring in the lower pressing plate, the sealing property of the distributing head system is improved greatly, a favorable sealing condition of vacuumizing leak detection is provided, and the precision of the data detection is increased.
Description
Technical field
The present invention relates to a kind of frock, be specifically related to a kind of liquefied natural gas vehicle carrier gas tank dispensing head helium leak check frock.
Background technology
Liquefied natural gas (LiquefiedNaturalGas, be called for short LNG) is a kind of clean energy resource that the world today generally acknowledges, due to its calorific value height, sufficient combustion, price is relatively low, safety good, transport is convenient etc., and advantage is subject to consumers in general's welcome. Having been applied to multiple field using liquefied natural gas as fuel at present, the LNGV being especially fuel with liquefied natural gas is increasingly subject to the favor of people.
Key position in LNGV is vehicle-mounted gas tank, vehicle-mounted gas tank is in the course of processing, the dispensing head system of vehicle-mounted gas tank needs to carry out helium leak check work after having welded, concrete operations are the dispensing head system evacuation that will have welded, helium less for molecule is sprayed onto the weld of dispensing head system, the detection intrasystem helium gas molecules content of dispensing head, determine that whether the welding of dispensing head system is qualified, and mostly existing dispensing head system leak detection tool equipment is directly to make two sleeves, then the leak detection of the evacuation again of the through hole in dispensing head system is blocked with vacuum cement, the sealing that there is dispensing head system through hole is relatively low, have influence on the helium leak check work work of dispensing head system, cause that detection data accuracy declines.
Summary of the invention
It is an object of the invention to, the detection problems such as data accuracy not high relatively low for the sealing existed in existing liquefied natural gas vehicle carrier gas tank dispensing head system helium leak check process, it is provided that a kind of novel in structural design, sealing property are high, cost is low, the liquefied natural gas vehicle carrier gas tank dispensing head helium leak check frock that can repeatedly use.
This invention address that its technical problem is adopted the technical scheme that:
A kind of liquefied natural gas vehicle carrier gas tank dispensing head helium leak check frock, including dispensing head system, sleeve, jointing, top board, lower platen, it is characterized in that: described dispensing head system is by outer dispensing head, interior dispensing head, connecting tube forms, described outer dispensing head and interior dispensing head are provided with through hole, described connecting tube two ends are respectively through welding and outer dispensing head, interior dispensing head connects, described sleeve is arranged on outer dispensing head, and between dispensing head and sleeve, it is provided with sealing ring outside, sealing ring can seal up the through hole on outer dispensing head, improve sealing, it is outside equipped with sleeve at sealing ring, it also is able to improve anti-pressure ability, described jointing is arranged on outer dispensing head, jointing connects vacuum extractor, dispensing head system is carried out evacuation, realize dispensing head system is carried out helium leak check frock, described top board and lower platen pass through bolt, nut connects, described interior dispensing head is arranged in lower platen, it is additionally provided with diaphragm seal between interior dispensing head and lower platen, diaphragm seal can seal up the through hole on interior dispensing head, pass through top board, bolt, nut, further enhance the compactness between interior dispensing head and lower platen, and then strengthen interior sealing between dispensing head and lower platen, for the air-proof condition that the helium evacuation leak detection offer of dispensing head system is good, improve the degree of accuracy of detection data, and then be conducive to the raising of dispensing head mass of system.
Beneficial effect: the present invention lives the through hole on outer dispensing head by the sleeve seal with sealing ring, the through hole on interior dispensing head is sealed up by the diaphragm seal in lower platen, substantially increase the sealing property of dispensing head system, the excellent sealing condition of evacuation leak detection is provided, be conducive to the lifting of detection data accuracy, reasonable in design, makes simple, easy to operate, practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the part-structure schematic diagram of the present invention, the structure of signal dispensing head system.
Fig. 3 is the upward view of Fig. 2 of the present invention.
Fig. 4 is the part-structure schematic diagram of the present invention, the attachment structure of signal sleeve and sealing ring.
Fig. 5 is the part-structure schematic diagram of the present invention, the attachment structure of signal top board, lower platen and diaphragm seal.
In figure: 1. outer dispensing head, 2. in dispensing head, 3. connecting tube, 4. through hole, 5. sleeve, 6. jointing, 7. sealing ring, 8. top board, 9. lower platen, 10. bolt, 11. nuts, 12. diaphragm seals.
Detailed description of the invention
Below with reference to accompanying drawing, the present invention is described in detail.
As shown in drawings: a kind of liquefied natural gas vehicle carrier gas tank dispensing head helium leak check frock, including dispensing head system, sleeve 5, jointing 6, top board 8, lower platen 9, it is characterized in that: described dispensing head system is by outer dispensing head 1, interior dispensing head 2, connecting tube 3 forms, described outer dispensing head 1 and interior dispensing head 2 are provided with through hole 4, described connecting tube 3 two ends are respectively through welding and outer dispensing head 1, interior dispensing head 2 connects, described sleeve 5 is arranged on outer dispensing head 1, and between dispensing head 1 and sleeve 5, it is provided with sealing ring 7 outside, sealing ring 7 can seal up the through hole 4 on outer dispensing head 1, improve sealing, it is outside equipped with sleeve 5 at sealing ring 7, it also is able to improve anti-pressure ability, described jointing 6 is arranged on outer dispensing head 1, jointing 6 connects vacuum extractor, dispensing head system is carried out evacuation, realize dispensing head system is carried out helium leak check frock, described top board 8 and lower platen 9 are by bolt 10, nut 11 connects, described interior dispensing head 2 is arranged in lower platen 9, and it is provided with diaphragm seal 12 between interior dispensing head 2 and lower platen 9, diaphragm seal 12 can seal up the through hole 4 on interior dispensing head 2, by top board 8, bolt 10, nut 11, further enhance the compactness between interior dispensing head 2 and lower platen 9, and then strengthen interior sealing between dispensing head 2 and lower platen 9, for the air-proof condition that the helium evacuation leak detection offer of dispensing head system is good, improve the degree of accuracy of detection data, and then be conducive to the lifting of dispensing head mass of system.
Above embodiments is only that the preferred embodiment of the present invention is described; not the scope of the present invention is defined; under the premise designing spirit without departing from the present invention; various deformation that technical scheme is made by this area ordinary skill technical staff and improvement, all should fall in the protection domain that claims of the present invention are determined.
Part that the present invention does not relate to is all same as the prior art maybe can adopt prior art to be realized.
Claims (1)
1. a liquefied natural gas vehicle carrier gas tank dispensing head helium leak check frock, including dispensing head system, sleeve, jointing, top board, lower platen, it is characterized in that: described dispensing head system is by outer dispensing head, interior dispensing head, connecting tube forms, described outer dispensing head and interior dispensing head are provided with through hole, described connecting tube two ends are respectively through welding and outer dispensing head, interior dispensing head connects, described sleeve is arranged on outer dispensing head, and between dispensing head and sleeve, it is provided with sealing ring outside, described jointing is arranged on outer dispensing head, described top board and lower platen pass through bolt, nut connects, described interior dispensing head is arranged in lower platen, it is additionally provided with diaphragm seal between interior dispensing head and lower platen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610243863.0A CN105675225A (en) | 2016-04-19 | 2016-04-19 | Liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610243863.0A CN105675225A (en) | 2016-04-19 | 2016-04-19 | Liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105675225A true CN105675225A (en) | 2016-06-15 |
Family
ID=56309890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610243863.0A Pending CN105675225A (en) | 2016-04-19 | 2016-04-19 | Liquefied natural gas vehicle-mounted gas tank distributing head helium leak-detecting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105675225A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201281650Y (en) * | 2008-10-28 | 2009-07-29 | 任开春 | Portable apparatus for detecting leakage of straight stitch welded steel pipe |
| JP4653254B1 (en) * | 2010-07-12 | 2011-03-16 | 有限会社大和設備 | Drainage pipe leak test equipment |
| CN103574215A (en) * | 2012-08-02 | 2014-02-12 | 五冶集团上海有限公司 | PE pipeline pressure test blind plate |
| GB2506838A (en) * | 2012-08-07 | 2014-04-16 | Atmos Wave Ltd | A method of identifying leaks in a fluid carrying conduit using a pig |
| EP2793011A1 (en) * | 2013-04-05 | 2014-10-22 | Ipm S.R.L. | Testing system for the operation of the tightness seal and bell of a pvc-type plastic material pipe, obtained by a forming process with integrated seal |
| CN204405256U (en) * | 2015-01-17 | 2015-06-17 | 芜湖市海格瑞德科技有限责任公司 | Be applicable to the air pressure leak detection tool equipment of liquefied natural gas vehicle carrier gas tank dispensing head |
| CN205607611U (en) * | 2016-04-19 | 2016-09-28 | 柴德维 | On -vehicle gas pitcher dispensing head helium gas detection of liquefied natural gas leaks frock |
-
2016
- 2016-04-19 CN CN201610243863.0A patent/CN105675225A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201281650Y (en) * | 2008-10-28 | 2009-07-29 | 任开春 | Portable apparatus for detecting leakage of straight stitch welded steel pipe |
| JP4653254B1 (en) * | 2010-07-12 | 2011-03-16 | 有限会社大和設備 | Drainage pipe leak test equipment |
| CN103574215A (en) * | 2012-08-02 | 2014-02-12 | 五冶集团上海有限公司 | PE pipeline pressure test blind plate |
| GB2506838A (en) * | 2012-08-07 | 2014-04-16 | Atmos Wave Ltd | A method of identifying leaks in a fluid carrying conduit using a pig |
| EP2793011A1 (en) * | 2013-04-05 | 2014-10-22 | Ipm S.R.L. | Testing system for the operation of the tightness seal and bell of a pvc-type plastic material pipe, obtained by a forming process with integrated seal |
| CN204405256U (en) * | 2015-01-17 | 2015-06-17 | 芜湖市海格瑞德科技有限责任公司 | Be applicable to the air pressure leak detection tool equipment of liquefied natural gas vehicle carrier gas tank dispensing head |
| CN205607611U (en) * | 2016-04-19 | 2016-09-28 | 柴德维 | On -vehicle gas pitcher dispensing head helium gas detection of liquefied natural gas leaks frock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |