CN103148292B - Vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof - Google Patents
Vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof Download PDFInfo
- Publication number
- CN103148292B CN103148292B CN201110399559.2A CN201110399559A CN103148292B CN 103148292 B CN103148292 B CN 103148292B CN 201110399559 A CN201110399559 A CN 201110399559A CN 103148292 B CN103148292 B CN 103148292B
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- Prior art keywords
- outer tube
- plug
- male spigot
- interlayer
- cloudy plug
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
- F16L59/184—Flanged joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/141—Arrangements for the insulation of pipes or pipe systems in which the temperature of the medium is below that of the ambient temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof, comprising: cloudy plug and male spigot, cloudy plug comprises outer tube and interior pipe, the interlayer wound insulation material of outer tube and interior pipe; Male spigot comprises the first outer tube, the second outer tube and interior pipe, the interlayer wound insulation material of the first outer tube and interior pipe, the interlayer of cloudy plug outer tube and interior pipe be coupled pipeline section interlayer and be communicated with and also vacuumize simultaneously, the interlayer of male spigot first outer tube and interior pipe is communicated with the interlayer being coupled pipeline section and vacuumizes simultaneously, male spigot second outer tube inserts pipe in cloudy plug, and cloudy plug segment seal section and male spigot segment seal section adopt the different material of coefficient of thermal expansion and contraction to cooperatively interact.By the way, the present invention is issued to good sealability and the heat-insulating property of vacuum insulation pipeline section inserting type coupling piece in deep cooling operating mode, and effectively realizes the easy inserting type connection of vacuum insulation pipeline section, has good economic benefit and use value.
Description
Technical field
The present invention relates to cryogenic liquid transportation art, particularly relate to a kind of vacuum heat-insulated pipe inserting type coupling piece and the connecting method thereof with automatic sealing function under cryogenic.
Background technique
This patent is mainly used in the connection between the vacuum heat-insulated pipe pipeline section of conveying cryogenic liquid (temperature is generally lower than-100 DEG C), by the pipe-line system by cryogenic insulating pipeline section connection composition transmission deep cooling medium.
Owing to carrying the particularity of deep cooling medium, propose very high requirement for conveying pipeline section coupling piece: the sealability should guaranteeing connecting joint place, namely fed sheet of a media can not leak through coupling piece; Also to maintain good heat-insulating property.Consider the applied environment of delivery pipeline system in addition, relate to installation, safeguard and because of many situations such as dismountings in particular cases, therefore the design synthesis of vacuum heat-insulated pipe coupling piece is thought of as: good sealability, good heat-insulating property, it is convenient to install, convenient disassembly.
In prior art, vacuum heat-insulated pipe inserting type coupling piece plug is divided into cloudy plug and male spigot, and negative and positive plug is the soldered end needing two pipelines connect respectively, and both are connected and form pipeline section coupling piece, and negative and positive plug sealing surface adopts seal ring sealing.
Its major defect is, heat is seriously leaked in connector assembly joint, heat-insulating property extreme difference; The sealability extreme difference of connecting joint, when temperature is changed to deep cooling by normal temperature, cannot reliably seal.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof, good sealing can be realized, and solve the leakage of vacuum heat-insulated pipe coupling piece, leakage heat seriously, and a difficult problem for dismounting difficulty, there is good economic benefit and use value.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: provide a kind of vacuum heat-insulated pipe plug-in type coupling piece, comprise: cloudy plug and male spigot, described cloudy plug comprises the flange plate that outer tube, interior pipe and connection outer tube dock with the end face of flange of interior Guan Bingyu male spigot, wound insulation material in the interlayer of described outer tube and interior pipe;
Described male spigot comprises the first outer tube, the second outer tube, interior pipe and connects the flange plate of the cloudy plug end face of flange docking of the first outer tube, the second outer tube and interior Guan Bingyu, wound insulation material in the interlayer of described first outer tube and interior pipe, socket connection between described cloudy plug and male spigot.
In a preferred embodiment of the present invention, described cloudy plug is fixedly connected with one by welding manner and is coupled pipeline section, and described male spigot is fixedly connected with one by welding manner and is coupled pipeline section.
In a preferred embodiment of the present invention, one end that in described cloudy plug, the coupled pipeline section of Guan Shangyu is soldered is provided with cloudy plug end sealing section, one end that in described male spigot, in the cloudy plug of Guan Shangyu, pipe connects is provided with male spigot end sealing section, be Spielpassung at normal temperatures between described cloudy plug end sealing section and male spigot end sealing section, under cryogenic, form close-fitting hoop sealing surface.
In a preferred embodiment of the present invention, the interlayer of described cloudy plug upper exterior tube and interior pipe is communicated with the interlayer being coupled pipeline section and vacuumizes simultaneously; On described male spigot, the interlayer of the first outer tube and interior pipe is communicated with the interlayer being coupled pipeline section and vacuumizes simultaneously.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the connecting method providing a kind of vacuum heat-insulated pipe plug-in type coupling piece, it is characterized in that, in cloudy plug, the internal diameter of pipe and the major diameter fit of male spigot second outer tube are arranged, and the second outer tube of described male spigot is inserted in the internal tube of cloudy plug.
In a preferred embodiment of the present invention, the coefficient of thermal expansion and contraction of the hoop seal face materials of described cloudy plug end sealing section is greater than the coefficient of thermal expansion and contraction of the hoop seal face materials of male spigot end sealing section.
The invention has the beneficial effects as follows: in the present invention, the sealing surface of cloudy plug end sealing section and the sealing surface of male spigot end sealing section have employed different materials, the physical property of being expanded with heat and contract with cold by material ensure that the sealing surface of vacuum heat-insulated pipe plug-in type coupling piece has been issued to good sealability at cryogenic environment, solve puzzlement market vacuum heat-insulated pipe coupling piece leakage for many years, leak problem that is seriously hot and dismounting difficulty, there is good economic benefit and use value.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the cloudy plug of vacuum heat-insulated pipe plug-in type coupling piece of the present invention;
Fig. 2 is the structural representation of a preferred embodiment of the male spigot of vacuum heat-insulated pipe plug-in type coupling piece of the present invention;
In accompanying drawing, the mark of each parts is as follows: 1, cloudy plug, and 11, outer tube, 12, interior pipe, 2, male spigot, 21, the first outer tube, the 22, second outer tube, 23, interior pipe, 3, be coupled pipeline section, 4, thermoinsulation material, 5, flange plate, 6, cloudy plug end sealing section, 7, male spigot end sealing section.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Refer to Fig. 1 and Fig. 2, the embodiment of the present invention comprises:
A kind of vacuum heat-insulated pipe plug-in type coupling piece, comprising: cloudy plug 1 and male spigot 2, socket connection between described cloudy plug 1 and male spigot 2.
Described cloudy plug 1 is fixedly connected with one and is coupled pipeline section 3, described male spigot 2 is fixedly connected with one and is coupled pipeline section 3.Particularly, the Placement between cloudy plug 1 and the end being coupled pipeline section 3 is for being welded to connect, and the Placement between male spigot 2 and the end being coupled pipeline section 3 is for being welded to connect.
Described cloudy plug 1 comprises the flange plate 5 that outer tube 11, interior pipe 12 and connection outer tube 11 dock with interior pipe 12 and with the end face of flange of male spigot 2, wound insulation material 4 in the interlayer of described outer tube 11 and interior pipe 12.Described male spigot 2 comprises the first outer tube 21, second outer tube 22, interior pipe 23 and connects the first outer tube 21, second outer tube 22 and interior pipe 23 and the flange plate 5 dock with cloudy plug 1 end face of flange, wound insulation material 4 in the interlayer of described first outer tube 21 and interior pipe 23.
Particularly, the interior pipe 12 of described cloudy plug 1 is provided with cloudy plug end sealing section 6 in one end soldered with coupled pipeline section 3, the interior pipe 22 of described male spigot 2 is provided with cloudy plug segment seal section 7 in the one end connected with pipe 12 in cloudy plug 1, be Spielpassung at normal temperatures between described cloudy plug end sealing section 6 and male spigot end sealing section 7, automatically can form close-fitting hoop sealing surface under cryogenic.
The mezzanine space of cloudy plug 1 upper exterior tube 11 and interior pipe 12 be coupled pipeline section 3 soldered after, be communicated with the mezzanine space being coupled pipeline section 3, and carry out interlayer vacuum-pumping with being coupled together with pipeline section 3; On male spigot 2 first outer tube 21 and interior pipe 23 mezzanine space be coupled pipeline section 3 soldered after, be communicated with the mezzanine space being coupled pipeline section 3, and carry out interlayer vacuum-pumping with being coupled together with pipeline section 3.
In addition; wound insulation material 4 in the interlayer of cloudy plug 1 upper exterior tube 11 and interior pipe 12; first outer tube 21 and wound insulation material 4 in the interlayer of interior pipe 23 on male spigot 2; after cloudy plug 1 and male spigot 2 patch and are connected; the interior pipe whole process of whole coupling piece is all in vacuum multi-layer insulation protection, realizes good heat-insulating property.
A connecting method for vacuum heat-insulated pipe plug-in type coupling piece,
Comprise: on described cloudy plug 1, on the internal diameter of pipe 12 and male spigot, the major diameter fit of 2 second outer tubes 22 is arranged, and namely male spigot 2 enters pipe 12 in cloudy plug 1 by the second outer tube 22 grafting.
The hoop seal face materials of described cloudy plug end sealing section 6 and the hoop seal face materials of male spigot end sealing section 7 different.
Particularly, the coefficient of thermal expansion and contraction of cloudy plug end sealing section 6 hoop seal face materials is greater than the coefficient of thermal expansion and contraction of male spigot end sealing section 7 hoop seal face materials.
Because the shrinkage degree that two kinds of sealing materials are different after passing into deep cooling medium realizes holding connection tightly between the hoop sealing surface of end sealing section 6 of cloudy plug 1 and the hoop sealing surface of the segment seal section 7 of male spigot 2, there is good sealing effect.
In addition, patching in process, the second outer tube 22 of male spigot 2 all inserts in the interior pipe 12 of cloudy plug 1.Like this, in the whole process of cloudy plug 1 and male spigot 2, pipe is all in the protection of vacuum multi-layer insulation, realizes good heat-insulating property.
The specific works process that cloudy plug 1 and male spigot 2 connect is:
When passing into deep cooling medium, because the performance of expanding with heat and contract with cold of two kinds of different sealing plane materiel material is widely different, (the hoop sealing surface of such as male spigot end sealing section 7 adopts special steel, does not substantially shrink; And the hoop sealing surface of cloudy plug end sealing section 6 adopts stainless steel, produce and significantly shrink), thus cloudy plug end sealing section 6 encases male spigot end sealing section 7 tightly, the sealing effect of realizing ideal.
After cryogenic liquid discharges coupling piece, the hoop sealing surface of outer field cloudy plug end sealing section 6 raises along with temperature and expands, and the hoop sealing surface of the male spigot end sealing section 7 of internal layer does not substantially expand after temperature raises, then original tightening state self-relaxation, cloudy plug 1 is separated automatically with male spigot 2.
The working principle of vacuum heat-insulated pipe inserting type coupling piece of the present invention and connecting method thereof is:
Mainly apply the physical property of material.General metallic material, contraction to a certain degree all can be had when being in cryogenic environment, can expand again when temperature is raised, namely expand with heat and contract with cold, the sealing surface that the physical property of being expanded with heat and contract with cold by material achieves vacuum heat-insulated pipe plug-in type coupling piece has been issued to good sealability at cryogenic environment, for vacuum heat-insulated pipe pipeline section coupling piece proposes a kind of design newly, good sealing effect and heat-insulating property can be realized.
The beneficial effect of vacuum heat-insulated pipe inserting type coupling piece of the present invention and connecting method thereof is:
The mezzanine space of cloudy plug 1 and male spigot 2 is wound with thermoinsulation material 4, with be coupled pipeline section 3 soldered after, mezzanine space vacuumizes, under in the whole process guaranteeing pipe link device, pipe is all in vacuum insulation cold insulation condition, therefore leaking heat is little, reaches good insulation and thermal insulation performance;
The cloudy hoop sealing surface of plug end sealing section 6 and the hoop sealing surface of male spigot end sealing section 7 have employed different materials, the physical property of being expanded with heat and contract with cold by application material ensure that the sealing surface of vacuum heat-insulated pipe plug-in type coupling piece has been issued to good sealability at cryogenic environment, for vacuum heat-insulated pipe pipeline section coupling piece proposes a kind of design newly, this design can realize good sealing effect and sealing effect, solve puzzlement market vacuum heat-insulated pipe coupling piece leakage for many years, leak problem that is seriously hot and dismounting difficulty, there is good economic benefit and use value.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a vacuum heat-insulated pipe plug-in type coupling piece, it is characterized in that, comprise: cloudy plug and male spigot, described cloudy plug comprises the flange plate that outer tube, interior pipe and connection outer tube dock with the end face of flange of interior Guan Bingyu male spigot, wound insulation material in the interlayer of described outer tube and interior pipe;
Described male spigot comprises the first outer tube, the second outer tube, interior pipe and connects the flange plate of the cloudy plug end face of flange docking of the first outer tube, the second outer tube and interior Guan Bingyu, wound insulation material in the interlayer of described first outer tube and interior pipe, socket connection between described cloudy plug and male spigot
Described cloudy plug is fixedly connected with one by welding manner and is coupled pipeline section, described male spigot is fixedly connected with one by welding manner and is coupled pipeline section, one end that in described cloudy plug, the coupled pipeline section of Guan Shangyu is soldered is provided with cloudy plug end sealing section, one end that in described male spigot, in the cloudy plug of Guan Shangyu, pipe connects is provided with male spigot end sealing section
Be Spielpassung at normal temperatures between described cloudy plug end sealing section and male spigot end sealing section, under cryogenic, form close-fitting hoop sealing surface, the coefficient of thermal expansion and contraction of the hoop seal face materials of described cloudy spigot seal section is greater than the coefficient of thermal expansion and contraction of the hoop seal face materials of male spigot seal section.
2. vacuum heat-insulated pipe plug-in type coupling piece according to claim 1, is characterized in that, the interlayer of described cloudy plug upper exterior tube and interior pipe is communicated with the interlayer being coupled pipeline section and vacuumizes simultaneously; The interlayer of the first outer tube on described male spigot, the second outer tube and interior pipe is communicated with the interlayer being coupled pipeline section and vacuumizes simultaneously.
3. the connecting method of a vacuum heat-insulated pipe plug-in type coupling piece as claimed in claim 1, it is characterized in that, in cloudy plug, the internal diameter of pipe and the major diameter fit of male spigot second outer tube are arranged, and the second outer tube of described male spigot is inserted in the internal tube of cloudy plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110399559.2A CN103148292B (en) | 2011-12-06 | 2011-12-06 | Vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110399559.2A CN103148292B (en) | 2011-12-06 | 2011-12-06 | Vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148292A CN103148292A (en) | 2013-06-12 |
| CN103148292B true CN103148292B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110399559.2A Active CN103148292B (en) | 2011-12-06 | 2011-12-06 | Vacuum heat-insulated pipe plug-in type coupling piece and connecting method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508763A (en) * | 2016-01-28 | 2016-04-20 | 瑞富工程技术（常州）有限公司 | Sheath type insertion connector and sealing connecting method for vacuum thermal insulating pipeline |
| CN108498163B (en) * | 2018-04-24 | 2020-07-28 | 海杰亚（北京）医疗器械有限公司 | Vacuum interlayer treatment process for split connection cryoablation needle |
| CN108742825B (en) * | 2018-06-15 | 2024-03-26 | 海杰亚（北京）医疗器械有限公司 | Device for minimally invasive compound treatment and multifunctional surgical needle set thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8432062U1 (en) * | 1984-11-02 | 1985-03-07 | kabelmetal electro GmbH, 3000 Hannover | Plug connection for line pipes for the transport of deep-frozen media |
| EP1619436A2 (en) * | 2004-07-20 | 2006-01-25 | Chart Industries, Inc. | Cryogenic seal for vacuum-insulated pipe |
| CN101326396A (en) * | 2005-12-10 | 2008-12-17 | 尼克桑斯公司 | Plug-in coupling for cryogenic lines |
| CN101688632A (en) * | 2007-06-19 | 2010-03-31 | 普莱克斯技术有限公司 | Vacuum insulated piping assembly method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991004436A1 (en) * | 1989-09-18 | 1991-04-04 | Aga Ab | A twist coupling for vacuum pipes |
| JPH10231970A (en) * | 1997-02-21 | 1998-09-02 | Mitsubishi Heavy Ind Ltd | Vacuum insulated pipe fitting |
| JP3338931B2 (en) * | 1999-05-17 | 2002-10-28 | 住友重機械工業株式会社 | Bayonet fitting for cryogenic fluid |
-
2011
- 2011-12-06 CN CN201110399559.2A patent/CN103148292B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8432062U1 (en) * | 1984-11-02 | 1985-03-07 | kabelmetal electro GmbH, 3000 Hannover | Plug connection for line pipes for the transport of deep-frozen media |
| EP1619436A2 (en) * | 2004-07-20 | 2006-01-25 | Chart Industries, Inc. | Cryogenic seal for vacuum-insulated pipe |
| CN101326396A (en) * | 2005-12-10 | 2008-12-17 | 尼克桑斯公司 | Plug-in coupling for cryogenic lines |
| CN101688632A (en) * | 2007-06-19 | 2010-03-31 | 普莱克斯技术有限公司 | Vacuum insulated piping assembly method |
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| CN103148292A (en) | 2013-06-12 |
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