CN203413351U - Vacuumizing sealing device for LNG (liquefied natural gas) bottle - Google Patents
Vacuumizing sealing device for LNG (liquefied natural gas) bottle Download PDFInfo
- Publication number
- CN203413351U CN203413351U CN201320486250.1U CN201320486250U CN203413351U CN 203413351 U CN203413351 U CN 203413351U CN 201320486250 U CN201320486250 U CN 201320486250U CN 203413351 U CN203413351 U CN 203413351U
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- vacuum
- lng
- vacuumizing
- bottle
- outer barrel
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Abstract
The utility model relates to a vacuumizing sealing device for an LNG (liquefied natural gas) bottle. The adopted technical scheme is as follows: the vacuumizing sealing device is composed of a pull valve, a support rod, a vacuum plug, an air-sucking pipe and a nut, wherein the pull valve is composed of a hand wheel and a pull rod through connection, one end of the pull rod is inserted in an outer barrel and is movably connected with the outer barrel, a vacuumizing connector and a nitrogen displacement port are arranged at the upper end of the outer barrel, the outer barrel and the air-sucking pipe are connected by a nut, one end of the pull rod is in threaded connection with the vacuum plug, a sealing ring is arranged on the vacuum plug, and two ends of the support rod are movably connected with the hand wheel and the outer barrel. The vacuumizing sealing device for the LNG bottle is convenient and rapid for operation and has a simple structure, high efficiency, good stability and reliable safety, can ensure no air to flow into an interlayer of the LNG bottle during vacuumizing connection when the LNG gas bottle is vacuumized and sealed, the vacuum degree of the interlayer is ensured and the product performance is ensured.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly a kind of seal arrangement vacuumizing for LNG gas cylinder.
Background technique
LNG Liquefied natural gas (Liquefied Natural Gas is called for short LNG) is the generally acknowledged clean energy resource in the world today.Its calorific value is high, sufficient combustion, price are low, and transport economic specific property and Security are good, are popular in users.Therefore LNG gas cylinder use amount is increasing, and is more and more subject to extensive concern.LNG gas cylinder is double layer construction, and inner bag, in order to splendid attire LNG, is airtight high-vacuum insulation layer between shell and inner bag.In existing production technology, when vacuumizing, reach after demand pressure, need to stop up vacuum tube is sealed up by vacuum.In prior art, to the conventional method of high-vacuum insulation layer sealed after being vacuumized, be: removal finds time, after pipeline, vacuum obstruction and vacuum tube sealing are installed rapidly, this kind of method, when sealing, air is easy to enter in LNG gas cylinder interlayer, affect gas purity and interlayer pressure in interlayer, finally affect effect of heat insulation.Therefore vacuumize that rear timely installation vacuum is stifled has been sealed to a urgent problem.
Summary of the invention
In order to address the above problem, it is a kind of simple in structure, easy to use that the utility model provides, the LNG gas cylinder vacuum-pumping density seal apparatus of good sealing effect.
The technical solution adopted in the utility model is as follows: a kind of LNG gas cylinder vacuum-pumping density seal apparatus, by drawing valve, strut, vacuum obstruction, evacuation tube and nut to form; The described valve that draws is that handwheel is connected with pull bar, and one end of pull bar is inserted in urceolus and is flexibly connected with urceolus, and the upper end of urceolus is provided with and vacuumizes interface and nitrogen replacement interface; Nut links together urceolus and evacuation tube; One end of pull bar is stopped up and is threaded with vacuum, and vacuum is stopped up and is provided with seal ring; The two ends of strut are flexibly connected with handwheel and urceolus.
The beneficial effects of the utility model are: while vacuumizing, strut lifts pull bar, expose evacuation tube entrance, after reaching setting pressure, extract rapidly strut, pull bar is under gravity and atmospheric pressure, fall rapidly, vacuum is stopped up with evacuation tube close contact and by the sealing of " O " RunddichtringO, passes through rotation hand wheel, pull bar and vacuum are stopped up to disengaging, then unclamp nut, will draw valve to extract out, complete and vacuumize and seal, because whole process completes under sealing state, so without air, flow in the interlayer of inner bag and shell.The utility model is convenient to operation, simple in structure, and efficiency is high, and good stability and safe and reliable, while having guaranteed LNG gas cylinder sealed after being vacuumized, flows in the interlayer of LNG gas cylinder without air during evacuated joint, guarantees the degree of vacuum of interlayer, guarantees the performance of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is working state figure of the present utility model (vacuum is stopped up with evacuation tube closed).
Fig. 3 is working state figure of the present utility model (pull bar and vacuum are stopped up and departed from).
Embodiment
As shown in Figure 1, a kind of LNG gas cylinder vacuum-pumping density seal apparatus: form by drawing valve (1), strut (2), vacuum to stop up (3), evacuation tube (4) and nut (5).
The described valve (1) that draws is that handwheel (1-1) is connected with pull bar (1-2), one end of pull bar (1-2) is inserted in urceolus (1-3) and is flexibly connected with urceolus (1-3), and the upper end of urceolus (1-3) is provided with and vacuumizes interface (1-4) and nitrogen replacement interface (1-5).
Nut (5) links together urceolus (1-3) and evacuation tube (4); One end of pull bar (1-2) is stopped up (3) with vacuum and is threaded, and vacuum is stopped up (3) and is provided with seal ring (3-1).
The two ends of strut (2) are flexibly connected with handwheel (1-1) and urceolus (1-3).
Working principle of the present utility model is: as shown in Figure 2, when needs vacuumize, by nut, will draw valve and the evacuation tube being located on LNG gas cylinder to link together, at handwheel with draw between the urceolus of valve and place strut, thereby pull bar is upwards lifted, expose evacuation tube entrance, start vacuum pumping device.As shown in Figure 3, when reaching setting pressure, extract rapidly strut, pull bar and handwheel are under gravity and atmospheric effect, fall rapidly, vacuum is stopped up evacuation tube entrance is blocked, and by " O " RunddichtringO, evacuation tube is sealed, then rotation hand wheel, pull bar and vacuum are stopped up to disengaging, rotating nut, will draw valve to unload, and complete LNG gas cylinder and vacuumize sealing.
Claims (1)
1. a LNG gas cylinder vacuum-pumping density seal apparatus, is characterized in that: by drawing valve (1), strut (2), vacuum to stop up (3), evacuation tube (4) and nut (5), form; The described valve (1) that draws is that handwheel (1-1) is connected with pull bar (1-2), one end of pull bar (1-2) is inserted in urceolus (1-3) and is flexibly connected with urceolus (1-3), and the upper end of urceolus (1-3) is provided with and vacuumizes interface (1-4) and nitrogen replacement interface (1-5); Nut (5) links together urceolus (1-3) and evacuation tube (4); One end of pull bar (1-2) is stopped up (3) with vacuum and is threaded, and vacuum is stopped up (3) and is provided with seal ring (3-1); The two ends of strut (2) are flexibly connected with handwheel (1-1) and urceolus (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486250.1U CN203413351U (en) | 2013-08-11 | 2013-08-11 | Vacuumizing sealing device for LNG (liquefied natural gas) bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486250.1U CN203413351U (en) | 2013-08-11 | 2013-08-11 | Vacuumizing sealing device for LNG (liquefied natural gas) bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413351U true CN203413351U (en) | 2014-01-29 |
Family
ID=49976239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320486250.1U Expired - Lifetime CN203413351U (en) | 2013-08-11 | 2013-08-11 | Vacuumizing sealing device for LNG (liquefied natural gas) bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334006A (en) * | 2014-08-14 | 2016-02-17 | 丹阳市利旺车辆部件有限公司 | Leak detecting device used for LNG vehicle-mounted gas cylinder gas-liquid seal assembly |
-
2013
- 2013-08-11 CN CN201320486250.1U patent/CN203413351U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334006A (en) * | 2014-08-14 | 2016-02-17 | 丹阳市利旺车辆部件有限公司 | Leak detecting device used for LNG vehicle-mounted gas cylinder gas-liquid seal assembly |
| CN105334006B (en) * | 2014-08-14 | 2018-05-04 | 丹阳市利旺车辆部件有限公司 | A kind of leakage detection apparatus for LNG mounted gas cylinder gas-liquid sealing components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 110000 No. 24, puyue Road, shenbeixin District, Shenyang City, Liaoning Province Patentee after: Fogia slinda safety technology (Shenyang) Co.,Ltd. Address before: 110136 No. 37, Zhengliang fifth road, Daoyi Development Zone, Shenyang, Liaoning Patentee before: Shenyang Gas Cylinder Safety Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |
|
| CX01 | Expiry of patent term |