CN110440080A - A kind of small vacuum and low temperature elbow and preparation method thereof - Google Patents
A kind of small vacuum and low temperature elbow and preparation method thereof Download PDFInfo
- Publication number
- CN110440080A CN110440080A CN201910750170.4A CN201910750170A CN110440080A CN 110440080 A CN110440080 A CN 110440080A CN 201910750170 A CN201910750170 A CN 201910750170A CN 110440080 A CN110440080 A CN 110440080A
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- China
- Prior art keywords
- outer tube
- swan neck
- low temperature
- elbow
- interior
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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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Classifications
-
- 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
- F16L43/00—Bends; Siphons
-
- 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
- F16L43/00—Bends; Siphons
- F16L43/02—Bends; Siphons adapted to make use of special securing means
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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
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
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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
- F16L59/22—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for bends
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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 small vacuum and low temperature elbows and preparation method thereof, small vacuum and low temperature elbow therein includes interior swan neck and outer swan neck, the interior swan neck is located in outer swan neck, and the periphery of the interior swan neck is coated with heat insulation layer, and the outer swan neck is equipped with vacuum seal connector.The production method of small vacuum and low temperature elbow therein is the following steps are included: make interior swan neck, a heat insulation layer is formed in the periphery wound insulation material of interior swan neck, it is prepared for forming the first outer tube, the second outer tube and third outer tube of outer swan neck, the interior swan neck of wound insulation material is placed in the first outer tube, the second outer tube and third outer tube, it is fixedly connected with the first outer tube, the second outer tube and third outer tube and forms outer swan neck, vacuum seal connector is set on outer swan neck.Its purpose is to provide, a kind of structure is simple, at low cost, the small small vacuum and low temperature elbow of leakage heat and preparation method thereof.
Description
Technical field
The present invention relates to cryogen transportation arts, more particularly to a kind of small vacuum and low temperature for transporting low temperature fluid
Elbow and preparation method thereof.
Background technique
Vacuum thermal insulation low temperature hard tube mainly for delivery of cryogenic liquid, such as liquid oxygen, liquid nitrogen, liquid hydrogen, liquefied natural gas,
It is mainly made of the vacuum welding connector of inner tube, outer tube and connection inner and outer pipes, inner tube is typically provided with low temperature cold contracting compensator.It is existing
Have in technology, vacuum and low temperature hard tube is usually made into the mark such as various specifications vacuum straight tube, vacuum elbow, vacuum threeway of seriation
Quasi- part, and the nonstandard vacuum subassembly according to shapes such as the arrangement demand of cryogenic pipeline system setting L shape, T shape, H-shaped, F shapes.Mark
Quasi- part and nonstandard vacuum subassembly low temperature hard tube connecting interface are vacuum welding connector, cover weldering straight pipe respectively by inner tube, outer tube
Small vacuum and low temperature straight connector form is formed to be attached.Normal bend is used to be connected in the form of small vacuum and low temperature straight connector
There are welding point dosage is more when connecing, the problems such as normal bend higher cost, system leaking heat is big, while in order to meet pipeline system
The more nonstandard vacuum subassembly of complexity need to be arranged in system tight space layout.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of structures, and small vacuum and low temperature simple, at low cost, that leakage heat is small is curved
Head and preparation method thereof.
Small vacuum and low temperature elbow in the present invention, including interior swan neck and outer swan neck, the interior swan neck are located at excurvation
In head tube, the periphery of the interior swan neck is coated with heat insulation layer, and the outer swan neck is equipped with vacuum seal connector.
Small vacuum and low temperature elbow in the present invention, wherein the interior swan neck includes elbow, the both ends difference of the elbow
It is connected with inner connecting tube, is connected separately with inner sleeve at the port of the inner connecting tube.
Small vacuum and low temperature elbow in the present invention, wherein the both ends of the elbow connect by welding respectively
Inner connecting tube is stated, is connected with the inner sleeve by welding respectively at the port of the inner connecting tube.
Small vacuum and low temperature elbow in the present invention, wherein the excurvation head tube includes the first outer tube being sequentially connected,
Two outer tubes and third outer tube, second outer tube are located at the bending section of outer swan neck, and first outer tube is equipped with
The vacuum seal connector.
Small vacuum and low temperature elbow in the present invention, wherein first outer tube, the second outer tube and third outer tube are logical
The mode for crossing welding is sequentially connected.
Small vacuum and low temperature elbow in the present invention, wherein the material of the heat insulation layer is glass fibre, asbestos, rock wool or gas
Gel felt.
The production method of small vacuum and low temperature elbow in the present invention, comprising the following steps:
Swan neck in making,
A heat insulation layer is formed in the periphery wound insulation material of the interior swan neck,
It is prepared for forming the first outer tube, the second outer tube and third outer tube of outer swan neck,
The interior swan neck of wound insulation material is placed in first outer tube, the second outer tube and third outer tube,
It is fixedly connected with first outer tube, the second outer tube and third outer tube and forms outer swan neck, and make described
Two outer tubes constitute the bending section of outer swan neck,
Vacuum seal connector is set on the outer swan neck.
The production method of small vacuum and low temperature elbow in the present invention, wherein in the production swan neck specific steps are as follows:
Prepare an elbow, inner connecting tube is respectively welded at the both ends of the elbow, inner sleeve is respectively welded at the port of the inner connecting tube.
The production method of small vacuum and low temperature elbow in the present invention, wherein described exhausted in the winding of the periphery of the interior swan neck
Hot material forms the specific steps of a heat insulation layer are as follows: in the periphery of interior swan neck winding glass fibre, asbestos, rock wool or gas
Gel felt forms the heat insulation layer.
The production method of small vacuum and low temperature elbow in the present invention, wherein described be fixedly connected with first outer tube, the
Two outer tubes and third outer tube form the specific steps of outer swan neck are as follows: are fixedly connected outside described first by welding
Casing, the second outer tube and third outer tube form the outer swan neck.
Small vacuum and low temperature elbow in the present invention cancels welding point, compensator, ruler compared to existing standard vacuum elbow
It is very little smaller, it is directly connect with both ends cryogenic pipe, simplifies cryogenic system circuit design and connection.Small vacuum and low temperature corner dimension compared with
It is small, it is suitable for the layout application of cryogenic system pipeline tight space, simplifies cryogenic system circuit design and connection, low temperature system can be reduced
Welding point quantity of uniting and leakage heat, structure itself are suitable for not setting low temperature stress when compensator, can by analyzing l-G simulation test
Engineer application.The production method of small vacuum and low temperature elbow in the present invention is simple and practical.
The present invention will be further explained below with reference to the attached drawings.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the small vacuum and low temperature elbow in the present invention；
Fig. 2 is the usage state diagram of the small vacuum and low temperature elbow in the present invention.
Specific embodiment
As shown in Figure 1, the small vacuum and low temperature elbow in the present invention includes interior swan neck and outer swan neck, the interior swan neck
In outer swan neck, the periphery of the interior swan neck is coated with heat insulation layer 4, and the outer swan neck is equipped with vacuum seal connector
8。
Interior swan neck includes elbow 1, and elbow 1 herein is preferably normal bend, that is, meets the elbow of relevant national standard,
The both ends of the elbow 1 are connected separately with inner connecting tube 2, are connected separately with inner sleeve 3 at the port of the inner connecting tube 2.Elbow 1
Both ends are connected with the inner connecting tube 2 by welding respectively, distinguish by welding at the port of the inner connecting tube 2
It is connected with the inner sleeve 3.Inner sleeve 3 is welded in the peripheral side of inner connecting tube 2.
Outer swan neck includes the first outer tube 5, the second outer tube 6 and third outer tube 7 being sequentially connected, outside described second
Casing 6 is located at the bending section of outer swan neck, and first outer tube 5 is equipped with the vacuum seal connector 8.
The specific connection type of first outer tube 5, the second outer tube 6 and third outer tube 7 are as follows: the first outer tube 5, second
Outer tube 6 and third outer tube 7 are sequentially connected by welding.
The material of heat insulation layer 4 is glass fibre, asbestos, rock wool or aerogel blanket.Certainly, the material of heat insulation layer 4 can be with
Select other heat-insulating materials, however it is not limited to which mentioned above is several.
As shown in Figure 1, simultaneously as shown in connection with fig. 2, the interior swan neck of the small vacuum and low temperature elbow of the present invention includes elbow and weldering
The inner connecting tube 2 at its both ends is connect, welds inner sleeve 3 at the port of each inner connecting tube 2 again, then pass through inner sleeve 3 and connected tube
The inner tube of road welding point 9 is welded to connect, and after the completion of the welding of inner flow passage pipeline, then wound insulation layer 4 will be covered in outside again
The exterior section of outer tube and connected pipeline welding point 9 be not welded to connect.
The production method of small vacuum and low temperature elbow in the present invention, comprising the following steps:
Swan neck in making,
A heat insulation layer 4 is formed in the periphery wound insulation material of the interior swan neck,
It is prepared for forming the first outer tube 5, the second outer tube 6 and third outer tube 7 of outer swan neck,
The interior swan neck of wound insulation material is placed in first outer tube 5, the second outer tube 6 and third outer tube 7
It is interior,
It is fixedly connected with first outer tube 5, the second outer tube 6 and third outer tube 7 and forms outer swan neck, and make described
Second outer tube 6 constitutes the bending section of outer swan neck,
Vacuum seal connector 8 is set on the outer swan neck.
The production method of small vacuum and low temperature elbow in the present invention, wherein making the specific steps of interior swan neck are as follows: prepare
Inner connecting tube 2 is respectively welded at the both ends of the elbow, in the inner connecting tube in one elbow (elbow herein is preferably normal bend)
Inner sleeve 3 is respectively welded at 2 port.
The production method of small vacuum and low temperature elbow in the present invention, wherein in the periphery wound insulation material shape of interior swan neck
At the specific steps of a heat insulation layer 4 are as follows: formed in the periphery of interior swan neck winding glass fibre, asbestos, rock wool or aerogel blanket
Heat insulation layer 4.
The production method of small vacuum and low temperature elbow in the present invention, wherein being fixedly connected with the first outer tube 5, the second outer tube
6 and third outer tube 7 form the specific steps of outer swan neck are as follows: be fixedly connected with the first outer tube 5, second by welding
Outer tube 6 and third outer tube 7 form outer swan neck.
Small vacuum and low temperature elbow in the present invention cancels welding point, compensator, ruler compared to existing standard vacuum elbow
It is very little smaller, it is directly connect with both ends cryogenic pipe, simplifies cryogenic system circuit design and connection.Small vacuum and low temperature corner dimension compared with
It is small, it is suitable for the layout application of cryogenic system pipeline tight space, simplifies cryogenic system circuit design and connection, low temperature system can be reduced
Welding point quantity of uniting and leakage heat, structure itself are suitable for not setting low temperature stress when compensator, can by analyzing l-G simulation test
Engineer application.The production method of small vacuum and low temperature elbow in the present invention is simple and practical.
Small vacuum and low temperature elbow in the present invention with both ends cryogenic pipe for directly connecting, and size is smaller, nothing in structure
Must welding point and compensator included by setting standard vacuum elbow, when alternate standard or nonstandard vacuum elbow, can reduce low
Warm system cost and leakage heat.The nonstandard vacuum subassembly with bend pipe such as L shape, H-shaped, F shape can split into small vacuum and low temperature elbow and simple
The vacuum subassembly of shape simplifies the design of cryogenic system circuit and elements.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (10)
1. a kind of small vacuum and low temperature elbow, it is characterised in that: including interior swan neck and outer swan neck, the interior swan neck is located at outer
In swan neck, the periphery of the interior swan neck is coated with heat insulation layer, and the outer swan neck is equipped with vacuum seal connector.
2. small vacuum and low temperature elbow according to claim 1, it is characterised in that: the interior swan neck includes elbow, described
The both ends of elbow are connected separately with inner connecting tube, are connected separately with inner sleeve at the port of the inner connecting tube.
3. small vacuum and low temperature elbow according to claim 2, it is characterised in that: the both ends of the elbow pass through welding respectively
Mode be connected with the inner connecting tube, be connected with the inner sleeve by welding respectively at the port of the inner connecting tube.
4. small vacuum and low temperature elbow according to claim 3, it is characterised in that: the outer swan neck includes being sequentially connected
First outer tube, the second outer tube and third outer tube, second outer tube are located at the bending section of outer swan neck, and described first
Outer tube is equipped with the vacuum seal connector.
5. small vacuum and low temperature elbow according to claim 4, it is characterised in that: first outer tube, the second outer tube
It is sequentially connected by welding with third outer tube.
6. small vacuum and low temperature elbow according to claim 5, it is characterised in that: the material of the heat insulation layer is glass fibers
Dimension, asbestos, rock wool or aerogel blanket.
7. a kind of production method of small vacuum and low temperature elbow, which comprises the following steps:
Swan neck in making,
A heat insulation layer is formed in the periphery wound insulation material of the interior swan neck,
It is prepared for forming the first outer tube, the second outer tube and third outer tube of outer swan neck,
The interior swan neck of wound insulation material is placed in first outer tube, the second outer tube and third outer tube,
It is fixedly connected with first outer tube, the second outer tube and third outer tube and forms outer swan neck, and make outside described second
Casing constitutes the bending section of outer swan neck,
Vacuum seal connector is set on the outer swan neck.
8. the production method of small vacuum and low temperature elbow according to claim 7, which is characterized in that swan neck in the production
Specific steps are as follows: prepare an elbow, inner connecting tube is respectively welded at the both ends of the elbow, the inner connecting tube port punish
It Han Jie not inner sleeve.
9. the production method of small vacuum and low temperature elbow according to claim 8, which is characterized in that described in the interior elbow
The periphery wound insulation material of pipe forms the specific steps of a heat insulation layer are as follows: winds glass fibers in the periphery of the interior swan neck
Dimension, asbestos, rock wool or aerogel blanket form the heat insulation layer.
10. the production method of small vacuum and low temperature elbow according to claim 9, which is characterized in that described to be fixedly connected with institute
State the specific steps that the first outer tube, the second outer tube and third outer tube form outer swan neck are as follows: solid by welding
Surely first outer tube, the second outer tube and third outer tube are connected and forms the outer swan neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750170.4A CN110440080A (en) | 2019-08-14 | 2019-08-14 | A kind of small vacuum and low temperature elbow and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750170.4A CN110440080A (en) | 2019-08-14 | 2019-08-14 | A kind of small vacuum and low temperature elbow and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110440080A true CN110440080A (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910750170.4A Pending CN110440080A (en) | 2019-08-14 | 2019-08-14 | A kind of small vacuum and low temperature elbow and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191420193A (en) * | 1914-09-25 | 1915-09-27 | George Bertram Filmer | Vacuum and Dead Air Piping System. |
| JPH04149328A (en) * | 1990-10-11 | 1992-05-22 | Zojirushi Corp | Double vacuum pipe |
| CN101539233A (en) * | 2009-04-21 | 2009-09-23 | 徐林波 | Vacuum thermal insulating pipeline and manufacture and application thereof |
| CN104500868A (en) * | 2014-11-21 | 2015-04-08 | 东莞中子科学中心 | Radiation-proof and explosion-proof multilayer nested type low-temperature delivery unit and low-temperature delivery pipe |
| CN204647600U (en) * | 2015-03-31 | 2015-09-16 | 北京航天发射技术研究所 | A kind of combined type connecting tube |
| CN208058227U (en) * | 2018-03-04 | 2018-11-06 | 江苏扬光机械制造有限公司 | A kind of novel aviation vacuum metal elbow |
-
2019
- 2019-08-14 CN CN201910750170.4A patent/CN110440080A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191420193A (en) * | 1914-09-25 | 1915-09-27 | George Bertram Filmer | Vacuum and Dead Air Piping System. |
| JPH04149328A (en) * | 1990-10-11 | 1992-05-22 | Zojirushi Corp | Double vacuum pipe |
| CN101539233A (en) * | 2009-04-21 | 2009-09-23 | 徐林波 | Vacuum thermal insulating pipeline and manufacture and application thereof |
| CN104500868A (en) * | 2014-11-21 | 2015-04-08 | 东莞中子科学中心 | Radiation-proof and explosion-proof multilayer nested type low-temperature delivery unit and low-temperature delivery pipe |
| CN204647600U (en) * | 2015-03-31 | 2015-09-16 | 北京航天发射技术研究所 | A kind of combined type connecting tube |
| CN208058227U (en) * | 2018-03-04 | 2018-11-06 | 江苏扬光机械制造有限公司 | A kind of novel aviation vacuum metal elbow |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191112 |
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| RJ01 | Rejection of invention patent application after publication |