CN201348106Y - Vacuum heat insulation flanged joint for low temperature pipeline - Google Patents
Vacuum heat insulation flanged joint for low temperature pipeline Download PDFInfo
- Publication number
- CN201348106Y CN201348106Y CNU2009200989117U CN200920098911U CN201348106Y CN 201348106 Y CN201348106 Y CN 201348106Y CN U2009200989117 U CNU2009200989117 U CN U2009200989117U CN 200920098911 U CN200920098911 U CN 200920098911U CN 201348106 Y CN201348106 Y CN 201348106Y
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Abstract
A vacuum heat insulation flanged joint for a low temperature pipeline mainly solves the problem of large heat leakage amount and poor sealing effect of the flanged joint, and is characterized in that a convex joint (4) and a concave joint (9) are arranged respectively in the cavity (13) between an internal and an external pipe (2 and 3) of a pipeline (1) and a cavity (16) between an internal and an external pipe (11 and 10) of a pipeline (12), and an internal joint (18) and an external joint (21) of the convex joint and an internal joint pipe (28) and an external joint of the concave joint are welded respectively on the internal and the external pipe (2 and 3) and the internal and the external pipe (11 and 10); an end convex (30) of an internal joint (18), a groove (31) of an internal joint (27) and an end boss (32) of an external joint (21) and an inclined plane (33) of an external joint (25) are combined and filled respectively with an internal and an external sealing member (15 and 14), so as to form a cavity (7) between joints, and a convex and a concave joint (4 and 9) are joined and tightened with ring flanges (5) and screw bolts (6). The joint has the advantages of compact structure, reliable sealing and small leakage amount.
Description
Technical field
The utility model relates to the pipe coupling in a kind of low-temperature deep liquefaction, cryogen storing field, especially a kind of cryogenic piping vacuum insulation flanged joint.
Background technique
The cryogenic vacuum insulated piping is used through regular meeting in low-temperature deep liquefaction, cryogen storing field; cryogenic vacuum insulated piping system is formed by connecting by the cryogenic vacuum insulated piping; be subjected to the requirement in the restriction of installation conditions and use, the maintenance, the cryogenic vacuum insulated piping need be used flanged joint.At present in the prior art the cryogenic piping flanged joint near this flange joint be single track plane sealing flanged joint, fittings body is straight plate structure, flange plate is fixed on the pipeline, is filled with sealing gasket between the flange plate.Yet the problem of this structure existence is: leak heat greatly, and the easy medium that produces of single track sealing is revealed very dangerous.
Summary of the invention
Technical problem to be solved in the utility model is to overcome defective and the deficiency that single track plane sealing flanged joint exists in the present prior art, and a kind of cryogenic piping vacuum insulation flanged joint is provided, it can solve bad, adiabatic little, the unsafe problem of cryogenic vacuum insulated piping flanged joint sealing effect effectively.
Technical solution of the present utility model is: it comprises pipeline, flange plate, bolt, be respectively arranged with convex joint and female fitting in the cavity between two butt joint interior pipes of pipelines and the outer tube, and the convex joint spigot is welded on two with convex joint socket and female fitting inner connecting tube respectively successively with the female fitting socket and docks on the interior pipe and outer tube of pipeline; The groove of the end bosses of convex joint spigot and female fitting spigot and the end boss of convex joint socket with fill respectively after the inclined-plane of female fitting socket matches in seal and external sealed body and form cavity between joint, convex joint and female fitting are fastening by flange plate, bolt, nut butt joint more then.
Described cryogenic piping has peep hole with cavity position between the joint between interior seal of the female fitting socket correspondence of vacuum insulation flanged joint and the external sealed body.
Technique effect of the present utility model is: because this device has adopted said structure, and then between convex joint and female fitting, formed cavity between joint, in the pipeline cryogenic liquide by the time this cavity just become vacuum cavity, so just reduced that working medium passes through the heat transfer by convection of piping flange joint to external environment in the cryogenic piping; Convex joint and female fitting all are collapsible thin-walled heat bridge structure simultaneously, have increased heat transfer resistance, thereby leak hot little.Because said structure has inside and outside double sealing, make that this joint sealing is reliable again, the working medium security of operation does not have leakage; The peep hole of seal in this flanged joint also is provided with and checks, thereby also simplified daily maintenance work.
Description of drawings
Accompanying drawing 1 is a structural representation sectional drawing of the present utility model;
Accompanying drawing 2 is local amplification profiles of interior seal position I in the accompanying drawing 1.
Accompanying drawing 3 is the local amplification profiles of the accompanying drawing 1 seal position II of China and foreign countries.
Accompanying drawing 5 is section of structures of female fitting in the accompanying drawing 1
Among the figure: pipe in the 1-pipeline, 2-, 3-outer tube, 4-convex joint, the 5-flange plate, 6-bolt, cavity between the 7-joint, 8-nut, the 9-female fitting, pipe in the 10-outer tube, 11-, 12-pipeline, the 13-cavity, seal in the 14-external sealed body, 15-, the 16-cavity, 17-convex joint support ring, 18-convex joint spigot, connecting leg in the 19-convex joint, the outer connecting leg of 20-convex joint, the socket of 21-convex joint, the 22-screw, 23-sealing gasket, 24-peep hole, 25-female fitting socket, the outer connecting leg of 26-female fitting, 27-female fitting spigot, 28-female fitting inner connecting tube, 29-female fitting support ring, 30-projection, the 31-groove, 32-boss, 33-inclined-plane.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Shown in the 1-5, it comprises pipeline 1, flange plate 5, bolt 6 in conjunction with the accompanying drawings, between the interior pipe 2 of cryogenic vacuum insulated piping 1 and the outer tube 3 cavity 13 is arranged, and convex joint 4 is arranged in the cavity 13; Convex joint 4 is made up of connecting leg 19, convex joint support ring 17, the outer connecting leg 20 of convex joint and convex joint socket 21 in convex joint spigot 18, the convex joint, connecting leg 19 is welded in convex joint spigot 18 in the convex joint, the outer connecting leg 20 of convex joint is welded in convex joint socket 21, convex joint support ring 17 connects connecting leg 19 and the outer connecting leg 20 of convex joint in the convex joint, convex joint spigot 18 and convex joint socket 21 respectively with the interior pipe 2 of pipeline 1, outer tube 3 welding, convex joint 4 has just constituted collapsible thin-walled heat bridge structure like this.Between the interior pipe 11 of cryogenic vacuum insulated piping 12 and the outer tube 10 cavity 16 is arranged, female fitting 9 is arranged in the cavity 16; Female fitting 9 is made up of female fitting inner connecting tube 28, female fitting spigot 27, female fitting support ring 29, the outer connecting leg 26 of female fitting and female fitting socket 25, female fitting spigot 27 is welded in female fitting inner connecting tube 28, the outer connecting leg 26 of female fitting is welded in female fitting socket 25, female fitting support ring 17 connects female fitting spigot 27 and the outer connecting leg 26 of female fitting, female fitting inner connecting tube 28 and female fitting socket 25 respectively with the interior pipe 11 of pipeline 12, outer tube 10 welding, female fitting 9 has just constituted collapsible thin-walled heat bridge structure like this.
After matching with the groove 31 of female fitting spigot 27, the end bosses 30 of convex joint spigot 18 fills external sealed body 15, after matching with the inclined-plane 33 of female fitting socket 25, the end boss 32 of convex joint socket 21 fills external sealed body 14, fastening by 8 butt joints of flange plate 5, bolt 6, nut again, form inside and outside two seals.Even like this under the situation that interior road seal 15 leaks, still can enough outer course seal 14 sealed pipe inner fluids, guarantee that the piping flange joint sealing is reliable.
Like this convex joint 4, female fitting 9 with and interior seal 15, external sealed body 14 between formed cavity 7 between the joint of sealing, in pipeline 1 and pipeline 12, lead under the situation of cryogenic liquide, gas temperature descends in the sealing cavity 7, pressure descends fast, under the cryogenic liquide temperature situation of very low (as liquid hydrogen-253 ℃), air pressure in the enclosed cavity is extremely low, and cavity 7 just becomes vacuum cavity between joint like this, has so just reduced the heat transfer by convection of the interior working medium of pipeline by this enclosed cavity; Collapsible thin-walled heat bridge structure has been adopted self in convex joint 4, female fitting 9 simultaneously again, has reduced the conductive heat leakage of pipeline, thereby the cryogenic system working medium is thermoae little by vacuum insulation flanged joint hourglass.
When peep hole 24 is flat with sealing gasket 23 and screw 22 stifled on, pipeline processing and when installing the position of peep hole 24 should stagger with flange plate 5, bolt 6, nut 8 mounting points.
Claims (2)
1, a kind of cryogenic piping vacuum insulation flanged joint, comprise pipeline (1), flange plate (5), bolt (6), it is characterized in that: the inner and outer pipes (2 of pipeline (1), the inner and outer pipes (11 of cavity 3) (13) and pipeline (12), 10) be respectively arranged with convex joint (4) and female fitting (9) in the cavity between (16), and convex joint spigot (18) is welded on inner and outer pipes (2 with convex joint socket (21) and female fitting inner connecting tube (28) respectively successively with female fitting socket (25), 3) and on the inner and outer pipes (11,10); The end boss (32) of the end bosses (30) of convex joint spigot (18) and the groove (31) of female fitting spigot (27) and convex joint socket (21) with fill inside and outside seal (15 respectively after the inclined-plane (33) of female fitting socket (25) matches, 14) form cavity (7) between joint, convex-concave joint (4,9) docks fastening by flange plate (5), bolt (6) more then.
2, cryogenic piping according to claim 1 vacuum insulation flanged joint is characterized in that: cavity (7) position has peep hole (24) between the joint between the corresponding inside and outside seal (15,14) of female fitting socket (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200989117U CN201348106Y (en) | 2009-01-08 | 2009-01-08 | Vacuum heat insulation flanged joint for low temperature pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200989117U CN201348106Y (en) | 2009-01-08 | 2009-01-08 | Vacuum heat insulation flanged joint for low temperature pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348106Y true CN201348106Y (en) | 2009-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200989117U Expired - Fee Related CN201348106Y (en) | 2009-01-08 | 2009-01-08 | Vacuum heat insulation flanged joint for low temperature pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201348106Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155597A (en) * | 2011-04-29 | 2011-08-17 | 张家港富瑞特种装备股份有限公司 | Connecting structure of low-temperature pipeline and valve |
| CN102252140A (en) * | 2011-07-21 | 2011-11-23 | 浙江大学 | Seal joint of deep low-temperature nonmetal pipeline |
| CN104131833A (en) * | 2014-07-09 | 2014-11-05 | 中国矿业大学 | Escape channel for pressure bump roadway |
| CN106481898A (en) * | 2016-11-15 | 2017-03-08 | 中国科学院力学研究所 | A kind of HTHP air long-distance sand transport pipeline |
| CN108426127A (en) * | 2017-02-15 | 2018-08-21 | 丰田自动车株式会社 | Depressurize heat insulation pipe construction |
| CN108895225A (en) * | 2018-09-17 | 2018-11-27 | 江西中烟工业有限责任公司 | A kind of pipe-line system and its constructive method of clean room |
| CN110500458A (en) * | 2019-08-28 | 2019-11-26 | 北京航天发射技术研究所 | Cryogenic vacuum face-flange |
| CN112072340A (en) * | 2020-07-31 | 2020-12-11 | 深圳供电局有限公司 | Dewar structure connecting device, superconducting cable connecting system and assembling method thereof |
| CN112128494A (en) * | 2020-08-24 | 2020-12-25 | 上海齐耀动力技术有限公司 | Flange joint for vacuum interlayer pipeline and vacuum interlayer pipeline assembly |
| GB2614885A (en) * | 2022-01-19 | 2023-07-26 | Airbus Operations Ltd | Coupling for insulated piping |
-
2009
- 2009-01-08 CN CNU2009200989117U patent/CN201348106Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155597A (en) * | 2011-04-29 | 2011-08-17 | 张家港富瑞特种装备股份有限公司 | Connecting structure of low-temperature pipeline and valve |
| CN102252140A (en) * | 2011-07-21 | 2011-11-23 | 浙江大学 | Seal joint of deep low-temperature nonmetal pipeline |
| CN102252140B (en) * | 2011-07-21 | 2012-10-10 | 浙江大学 | Seal joint of deep low-temperature nonmetal pipeline |
| CN104131833A (en) * | 2014-07-09 | 2014-11-05 | 中国矿业大学 | Escape channel for pressure bump roadway |
| CN104131833B (en) * | 2014-07-09 | 2016-07-06 | 中国矿业大学 | Impulsion pressure tunnel passway for escaping |
| CN106481898A (en) * | 2016-11-15 | 2017-03-08 | 中国科学院力学研究所 | A kind of HTHP air long-distance sand transport pipeline |
| CN108426127A (en) * | 2017-02-15 | 2018-08-21 | 丰田自动车株式会社 | Depressurize heat insulation pipe construction |
| CN108426127B (en) * | 2017-02-15 | 2019-12-31 | 丰田自动车株式会社 | Pressure reducing heat insulating piping structure |
| CN108895225A (en) * | 2018-09-17 | 2018-11-27 | 江西中烟工业有限责任公司 | A kind of pipe-line system and its constructive method of clean room |
| CN110500458A (en) * | 2019-08-28 | 2019-11-26 | 北京航天发射技术研究所 | Cryogenic vacuum face-flange |
| CN112072340A (en) * | 2020-07-31 | 2020-12-11 | 深圳供电局有限公司 | Dewar structure connecting device, superconducting cable connecting system and assembling method thereof |
| CN112072340B (en) * | 2020-07-31 | 2022-08-30 | 深圳供电局有限公司 | Dewar structure connecting device, superconducting cable connecting system and assembling method thereof |
| CN112128494A (en) * | 2020-08-24 | 2020-12-25 | 上海齐耀动力技术有限公司 | Flange joint for vacuum interlayer pipeline and vacuum interlayer pipeline assembly |
| CN112128494B (en) * | 2020-08-24 | 2023-12-01 | 上海齐耀动力技术有限公司 | Flange joint for vacuum interlayer pipeline and vacuum interlayer pipeline assembly |
| GB2614885A (en) * | 2022-01-19 | 2023-07-26 | Airbus Operations Ltd | Coupling for insulated piping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20110108 |