CN103499484A - Pressure testing seal fixture of automobile LNG (Liquefied Natural Gas) cylinder - Google Patents
Pressure testing seal fixture of automobile LNG (Liquefied Natural Gas) cylinder Download PDFInfo
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- CN103499484A CN103499484A CN201310427076.8A CN201310427076A CN103499484A CN 103499484 A CN103499484 A CN 103499484A CN 201310427076 A CN201310427076 A CN 201310427076A CN 103499484 A CN103499484 A CN 103499484A
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- gas cylinder
- sealing cover
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- dispensing head
- lower sealing
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Abstract
The invention relates to a pressure testing seal fixture of an automobile LNG (Liquefied Natural Gas) cylinder. The pressure testing seal fixture comprises a support pipe at the end part of the LNG cylinder, and a cylinder distributing head at the head part of the support pipe, wherein an upper sealing cover is arranged on the cylinder distributing head, the bottom surface of the upper sealing cover downwards extends to form an annular baffle plate, a lower sealing cover is arranged outside the annular baffle plate and the cylinder distributing head, a connecting plate is arranged at the bottom of the lower sealing cover, a gas hole is formed in the cylinder distributing head and communicated with a gas pipe on the cylinder, a gas cavity is formed between the cylinder distributing head and the bottom surface of the upper sealing cover, and a limit pipe is arranged at the center of the top of the upper sealing cover and is communicated with the gas cavity. The pressure testing seal fixture has the beneficial effects of simple structure and convenience in operation; when the pressure testing seal fixture is applied to tests on cylinders with different sizes, the sizes of the upper sealing cover, the lower sealing cover and an O-shaped sealing ring only need to be changed.
Description
Technical field
The present invention relates to the manufacture field of the gas cylinder of LNG, especially relate to a kind of pressure test sealing frock of automobile-used LNG gas cylinder.
Background technology
Along with the fast development of modern economy and technology, LNG(liquefied natural gas liquefied natural gas (LNG)) as a kind of novel energy, the trend of its development is very fast.Gas cylinder industry development as carrying LNG also presents rapid ascendant trend, and the safety of gas cylinder is more and more paid attention to.Pressure test, as the important procedure in LNG gas cylinder production run, is used for checking the bearing pressure of gas cylinder self, and the performance of product is played to vital effect.Existing pressure test Sealing Technology adopts simple rubber blanket to add the carbon steel retainer plate, encases the hole of dispensing head surrounding, uses for a long time rubber blanket easily aging, and sealing property is bad, has potential safety hazard.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of favorable sealing property and does not have the pressure test sealing frock of the automobile-used LNG gas cylinder of potential safety hazard.
The present invention solves the technical scheme that its technical matters takes:
A kind of pressure test sealing frock of automobile-used LNG gas cylinder, comprise the stay pipe that is arranged on LNG gas cylinder end, be arranged on the gas cylinder dispensing head of described stay pipe head, described gas cylinder dispensing head is provided with top cover labyrinth, the bottom surface of described top cover labyrinth extends to form a ring baffle downwards, the termination that described ring baffle is close to the sidewall of gas cylinder dispensing head and described ring baffle is no more than the bottom surface of gas cylinder dispensing head, be close to and be provided with lower sealing cover outside ring baffle and gas cylinder dispensing head, described lower sealing cover bottom is provided with the web joint for the described lower sealing cover of clamping; Described gas cylinder dispensing head is provided with pore, and described pore is communicated with by tracheae with gas cylinder, between described gas cylinder dispensing head and top cover labyrinth bottom surface, forms air cavity, and described top cover labyrinth top center position is provided with a position-limiting tube, and position-limiting tube is communicated with air cavity.
Preferably, in order to guarantee the sealing of frock, between described ring baffle sidewall and lower sealing cover, be provided with the O RunddichtringO; Be provided with the O RunddichtringO between described ring baffle head and lower sealing cover.
Preferably, described top cover labyrinth and lower sealing cover are fixed by hex bolts, spring washer and plain cushion.
The invention has the beneficial effects as follows: after having adopted said structure, whole tool structure is simple, easy to operate, for the gas cylinder of different size, only needs to change top cover labyrinth and the size of lower sealing cover and the size of O RunddichtringO and gets final product.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is decomposition texture schematic diagram of the present invention.
In figure: 1, hex bolts; 2, spring washer; 3, plain cushion; 4, top cover labyrinth; 5, gas cylinder dispensing head; 6, lower sealing cover; 7, web joint; 8,9, O RunddichtringO; 10, position-limiting tube; 11, stay pipe; 12, tracheae; 13, ring baffle; 14, pore; 15, air cavity.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
A kind of pressure test sealing frock of automobile-used LNG gas cylinder, comprise the stay pipe 11 that is arranged on LNG gas cylinder end as depicted in figs. 1 and 2, and the gas cylinder dispensing head 5 that is arranged on described stay pipe 11 heads.Described gas cylinder dispensing head 5 is provided with top cover labyrinth 4, and the bottom surface of described top cover labyrinth 4 extends to form a ring baffle 13 downwards, and the inwall of described ring baffle 13 is close to the bottom surface that gas cylinder dispensing head 5 and its termination are no more than gas cylinder dispensing head 5.Described ring baffle 13 and gas cylinder dispensing head 5 outsides are provided with lower sealing cover 6, and described lower sealing cover 6 bottoms are provided with the web joint 7 for the described lower sealing cover 6 of clamping.
Described gas cylinder dispensing head 5 is provided with pore 14, described pore 14 is communicated with by tracheae 12 with gas cylinder, form air cavity 15 between described gas cylinder dispensing head 5 and top cover labyrinth 4 bottom surfaces, in top cover labyrinth 4 top center positions, be provided with a position-limiting tube 10, position-limiting tube 10 is communicated with air cavity 15.
Be provided with O RunddichtringO 8 between described ring baffle 13 sidewalls and lower sealing cover 6; Be provided with 9, two O RunddichtringOs of O RunddichtringO between described ring baffle 13 heads and lower sealing cover 6 and play decisive role on the frock sealing property.For the material of O RunddichtringO, select upper extremely important, common elastomeric material can not meet its withstand voltage properties and sealing property, select the fluororubber of 26 types at this, it has the chemical stability of height, resistance to ag(e)ing, mechanical property is very good, general cooperation strong pressure is between 10-20Mpa, meet the test pressure of 3.18Mpa fully, can not produce crack performance under the pressurized effect for a long time, it is most important that what be is that the gas penetration potential of fluororubber of 26 types is little, it is larger to the solubleness of gas, but rate of propagation is smaller, so its gas penetration potential of aggregate performance is little, meet the frock sealing property.
Described top cover labyrinth 4 and lower sealing cover 6 are fixing by hex bolts 1, spring washer 2 and plain cushion 3, hex bolts 1 is two stressed expansions of O RunddichtringO in rundown process, thereby be close to top cover labyrinth 4, the outer wall of lower sealing cover 6 and gas cylinder dispensing head 5, each hex bolts 1 wants stressed even, the deflection that guarantees the O RunddichtringO is identical, thereby guarantees the sealing of frock, now needs torque spanner to carry out tighten the screws.
The effect of described top cover labyrinth 4 is mainly cover the first half of gas cylinder dispensing head 5 and come to the gas cylinder internal pressurising by position-limiting tube 10, air cavity 15 and tracheae 12 in the middle of top cover labyrinth 4; The effect of described lower sealing cover 6 is mainly to cover gas cylinder dispensing head 5 end portions; The effect of described web joint 7 is mainly the effect of positioning tool of playing for connecting lower sealing cover 6 and position-limiting tube 10, stay pipe 11, thereby guarantees frock installation Stability and veracity.The present invention adopts the frock of gas cylinder dispensing head as pressure test first, safe and reliable.
It is emphasized that above is better implementation column of the present invention, and any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. the pressure test sealing frock of an automobile-used LNG gas cylinder, it is characterized in that: comprise the stay pipe (11) that is arranged on LNG gas cylinder end, be arranged on the gas cylinder dispensing head (5) of described stay pipe (11) head, described gas cylinder dispensing head (5) is provided with top cover labyrinth (4), the bottom surface of described top cover labyrinth (4) extends to form a ring baffle (13) downwards, the termination that described ring baffle (13) is close to the sidewall of gas cylinder dispensing head (5) and described ring baffle (13) is no more than the bottom surface of gas cylinder dispensing head (5), be close to and be provided with lower sealing cover (6) outside ring baffle (13) and gas cylinder dispensing head (5), described lower sealing cover (6) bottom is provided with the web joint (7) for the described lower sealing cover of clamping (6), described gas cylinder dispensing head (5) is provided with pore (14), described pore (14) is communicated with by tracheae (12) with gas cylinder, form air cavity (15) between described gas cylinder dispensing head (5) and top cover labyrinth (4) bottom surface, described top cover labyrinth (4) top center position is provided with a position-limiting tube (10), and position-limiting tube (10) is communicated with air cavity (15).
2. the pressure test sealing frock of automobile-used LNG gas cylinder according to claim 1, is characterized in that: between described ring baffle (13) sidewall and lower sealing cover (6), be provided with O RunddichtringO (8).
3. the pressure test sealing frock of automobile-used LNG gas cylinder according to claim 1, is characterized in that: between described ring baffle (13) head and lower sealing cover (6), be provided with O RunddichtringO (9).
4. the pressure test sealing frock of automobile-used LNG gas cylinder according to claim 1 is characterized in that: described top cover labyrinth (4) and lower sealing cover (6) are fixing by hex bolts (1), spring washer (2) and plain cushion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310427076.8A CN103499484B (en) | 2013-09-18 | 2013-09-18 | The pressure test sealing frock of automobile-used LNG gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310427076.8A CN103499484B (en) | 2013-09-18 | 2013-09-18 | The pressure test sealing frock of automobile-used LNG gas cylinder |
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| Publication Number | Publication Date |
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| CN103499484A true CN103499484A (en) | 2014-01-08 |
| CN103499484B CN103499484B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310427076.8A Active CN103499484B (en) | 2013-09-18 | 2013-09-18 | The pressure test sealing frock of automobile-used LNG gas cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775783A (en) * | 2014-02-14 | 2014-05-07 | 新兴能源装备股份有限公司 | Pressure testing tool for external pipeline of gas storage bottle group in station |
| CN104712906A (en) * | 2015-03-20 | 2015-06-17 | 日照兴业汽车配件有限公司 | Low-temperature insulated cylinder vacuum leakage detection tool |
| CN110285320A (en) * | 2019-07-03 | 2019-09-27 | 中车西安车辆有限公司 | A kind of automobile-used LNG gas tank plate air pressure testing device of ore |
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|---|---|---|---|---|
| CN101581643A (en) * | 2009-06-08 | 2009-11-18 | 无锡昌华机电制造有限公司 | Water jacket and air bag type sealing device for hydraulic test of air bottle outside measuring method |
| US20090285526A1 (en) * | 2008-02-20 | 2009-11-19 | Endress + Hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh + Co. Kg | Optical subassembly for in-and/or out-coupling of electromagnetic radiation into, and/or out of, a pressure-tight housing |
| CN101694437A (en) * | 2009-09-28 | 2010-04-14 | 中材科技（苏州）有限公司 | Water jacket and water pressure test device applying same |
| CN203502289U (en) * | 2013-09-18 | 2014-03-26 | 中材科技（苏州）有限公司 | Pressure test sealing fixture for vehicular LNG (liquefied natural gas) cylinder |
-
2013
- 2013-09-18 CN CN201310427076.8A patent/CN103499484B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090285526A1 (en) * | 2008-02-20 | 2009-11-19 | Endress + Hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh + Co. Kg | Optical subassembly for in-and/or out-coupling of electromagnetic radiation into, and/or out of, a pressure-tight housing |
| CN101581643A (en) * | 2009-06-08 | 2009-11-18 | 无锡昌华机电制造有限公司 | Water jacket and air bag type sealing device for hydraulic test of air bottle outside measuring method |
| CN101694437A (en) * | 2009-09-28 | 2010-04-14 | 中材科技（苏州）有限公司 | Water jacket and water pressure test device applying same |
| CN203502289U (en) * | 2013-09-18 | 2014-03-26 | 中材科技（苏州）有限公司 | Pressure test sealing fixture for vehicular LNG (liquefied natural gas) cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775783A (en) * | 2014-02-14 | 2014-05-07 | 新兴能源装备股份有限公司 | Pressure testing tool for external pipeline of gas storage bottle group in station |
| CN104712906A (en) * | 2015-03-20 | 2015-06-17 | 日照兴业汽车配件有限公司 | Low-temperature insulated cylinder vacuum leakage detection tool |
| CN110285320A (en) * | 2019-07-03 | 2019-09-27 | 中车西安车辆有限公司 | A kind of automobile-used LNG gas tank plate air pressure testing device of ore |
| CN110285320B (en) * | 2019-07-03 | 2021-06-04 | 中车西安车辆有限公司 | LNG gas pitcher atmospheric pressure test device for ore car |
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| Publication number | Publication date |
|---|---|
| CN103499484B (en) | 2015-07-29 |
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