CN204201358U - The effective corrugated expansion joint of a kind of vacuum insulation - Google Patents
The effective corrugated expansion joint of a kind of vacuum insulation Download PDFInfo
- Publication number
- CN204201358U CN204201358U CN201420594576.0U CN201420594576U CN204201358U CN 204201358 U CN204201358 U CN 204201358U CN 201420594576 U CN201420594576 U CN 201420594576U CN 204201358 U CN204201358 U CN 204201358U
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- CN
- China
- Prior art keywords
- bellows
- vacuum insulation
- expansion joint
- corrugated expansion
- effective
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses the effective corrugated expansion joint of a kind of vacuum insulation, comprise the weld part be connected with bellows two ends respectively, and be connected in the carrier of bellows interior with weld part, welding portion is different from support outside dimension, supporting portion external diameter is less than metal bellows minimum diameter, and being placed in corrugated stainless steel tubing inside, described carrier is provided with elastic element, and it is maximum outer through place that elastic element is arranged at bellows.This kind of vacuum insulation effective corrugated expansion joint compact structure is compact, the welded flange at bellows two ends can form socket joint tube-in-tube structure, radial to nothing distortion, be applicable to the high-vacuum insulation pipeline that mezzanine space size is little, and the sleeve of the welded flange at bellows two ends composition can alleviate the impact raising corrugated expansion joint life-span of fluid to bellows while the impurities accumulation in effective less bellows gap.
Description
Technical field
The utility model relates to the metal corrugated expension joint mainly used in cryogenic liquide conveying high-vacuum insulation pipe to be improved.
Background technique
The cryogenic liquide conveying vacuum heat-insulating pipe of public domain comprises interior conduit and Outer Tube, and material is generally Austenitic Stainless Steel.Cryogenic liquide flows from interior conduit, forms vacuum insulation interlayers block heat conduction between interior conduit and Outer Tube.When vacuum heat-insulating pipe normally works, greatly, shrinkage difference easily causes the welding bead drawing crack between inner and outer pipes, therefore need arrange pipeline compensator for Outer Tube and the interior conduit temperature difference.
The compensator that current vacuum heat-insulating pipe field adopts is generally common metal bellows, and this kind of bellows material is softer, axially yielding, and after interior pipe welded bellows, easily in long-distance transport, vibration produces fatigue ruption, causes heavy losses.
Conventional axial pipeline compensator is at compensator outer installment end plate and pull bar, and boundary dimension is comparatively large, cannot be arranged on vacuum heat-insulating pipe inside.
Model utility content
Main purpose of the present utility model is for providing a kind of axial metal corrugated expension joint being applicable to cryogenic liquide conveying vacuum heat-insulating pipe.
In order to reach above-mentioned purpose, the utility model provides as case under technical side, the effective corrugated expansion joint of a kind of vacuum insulation, comprise the weld part be connected with bellows two ends respectively, and be connected in the carrier of bellows interior with weld part, welding portion is different from support outside dimension, supporting portion external diameter is less than metal bellows minimum diameter, and being placed in corrugated stainless steel tubing inside, described carrier is provided with elastic element, and it is maximum outer through place that elastic element is arranged at bellows.
Described connector portions and supporting portion are ring-type.
Described connector portions and supporting portion are upper and lower two-part, and size cooperatively interacts composition throwout sleeve.
The external diameter of described weld part is identical with bellows maximum outside diameter.
Described joint is flange, is one of the forming with carrier.
Described joint forms for material blank material identical with corrugated stainless steel tubing machining.
The form that described welded joint is connected with bellows is for weld.
Compared to prior art, the beneficial effects of the utility model are:
This kind of vacuum insulation effective corrugated expansion joint compact structure is compact, the welded joint at bellows two ends can form socket joint tube-in-tube structure, radial to nothing distortion, be applicable to the high-vacuum insulation pipeline that mezzanine space size is little, and the sleeve of the welded flange at bellows two ends composition can alleviate the impact raising corrugated expansion joint life-span of fluid to bellows while the impurities accumulation in effective less bellows gap.
Accompanying drawing explanation
Fig. 1 is the effective corrugated expansion joint front view of vacuum insulation involved by the utility model;
Fig. 2 is the sectional drawing of the effective corrugated expansion joint of vacuum insulation involved by the utility model;
Fig. 3 is the sectional drawing that the effective corrugated expansion joint of vacuum insulation involved by the utility model is applied to vacuum heat-insulating pipe;
As shown in the figure:
1,3 is welded joints, and 2 is corrugated stainless steel tubings, and 4,9 is vacuum heat-insulating pipe inner and outer pipes end sockets, and 5,10 is vacuum heat-insulating pipe interior conduits, and 6 is vacuum heat-insulating pipe Outer Tubes, and 7 is corrugated expansion joints, and 8 is vacuum suction valves, and 11 is supporting portions, and 12 is elastic elements.
Embodiment
Below in conjunction with accompanying drawing, mode of execution of the present utility model is described.
Fig. 1 is front view of the present utility model, and Fig. 2 is sectional drawing of the present utility model.
With reference to Fig. 1 and Fig. 2, corrugated expansion joint involved by the utility model is by welded joint 1,3, corrugated stainless steel tubing 2 is welded, and Fig. 2 illustrates welded joint 1,3 and cooperatively interacts and constitute throwout sleeve, and welded joint 1,3 can only move axially and can not move radially.
Shown in Fig. 2 sectional drawing, the throwout sleeve that welded joint is formed can form shielding in bellows interior, hinders cryogenic liquide to contact with bellows, can alleviate cryogenic liquide washing away bellows, and the impurity in cryogenic liquide can be hindered to accumulate at bellows trough place, improve the bellows life-span.
Shown in Fig. 3 vacuum heat-insulating pipe sectional drawing, interior conduit 5,10 outer wall, Outer Tube 6 inwall, corrugated expansion joint 7 outer wall and vacuum heat-insulating pipe inner and outer pipes end socket 4, by vacuum suction valve extracting vacuum, form vacuum chamber.When having cryogenic liquide to flow in interior conduit 5,10, low temperature can cause interior conduit 5,10 to shrink, and due to the isolation of vacuum chamber, the temperature remains within the normal range does not shrink for Outer Tube.Now because interior conduit 5,10 termination and inner and outer pipes end socket 4,9 weld together, cannot move, corrugated expansion joint can by axial tension, and the position-limiting action of elastic element 12 that the throwout sleeve supporting portion 11 formed due to welded joint 1,3 is arranged, when vacuum insulation tube vibration, corrugated expansion joint can not produce radial vibration, can extend the life-span of corrugated expansion joint.
Claims (7)
1. the effective corrugated expansion joint of vacuum insulation, comprise the weld part be connected with bellows two ends respectively, and be connected in the carrier of bellows interior with weld part, it is characterized in that, welding portion is different from support outside dimension, and supporting portion external diameter is less than metal bellows minimum diameter, and is placed in corrugated stainless steel tubing inside, described carrier is provided with elastic element, and it is maximum outer through place that elastic element is arranged at bellows.
2. the effective corrugated expansion joint of a kind of vacuum insulation as claimed in claim 1, it is characterized in that, described connector portions and supporting portion are ring-type.
3. the effective corrugated expansion joint of a kind of vacuum insulation as claimed in claim 1 or 2, is characterized in that, described connector portions and supporting portion are upper and lower two-part, and size cooperatively interacts composition throwout sleeve.
4. the effective corrugated expansion joint of a kind of vacuum insulation as claimed in claim 1, is characterized in that, the external diameter of described weld part is identical with bellows maximum outside diameter.
5. the effective corrugated expansion joint of a kind of vacuum insulation according to claim 1, it is characterized in that, described joint is flange, is one of the forming with carrier.
6. the effective corrugated expansion joint of a kind of vacuum insulation according to claim 1, it is characterized in that, described joint forms for material blank material identical with corrugated stainless steel tubing machining.
7. the effective corrugated expansion joint of a kind of vacuum insulation according to claim 1, it is characterized in that, the form that described welded joint is connected with bellows is for weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594576.0U CN204201358U (en) | 2014-10-15 | 2014-10-15 | The effective corrugated expansion joint of a kind of vacuum insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594576.0U CN204201358U (en) | 2014-10-15 | 2014-10-15 | The effective corrugated expansion joint of a kind of vacuum insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201358U true CN204201358U (en) | 2015-03-11 |
Family
ID=52659319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420594576.0U Expired - Fee Related CN204201358U (en) | 2014-10-15 | 2014-10-15 | The effective corrugated expansion joint of a kind of vacuum insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204201358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591663A (en) * | 2018-05-06 | 2018-09-28 | 朱海军 | High life tetrafluoro compensator |
| CN109630795A (en) * | 2018-11-15 | 2019-04-16 | 刘星 | PP/PPH/PPS/PE soft wave compensator |
-
2014
- 2014-10-15 CN CN201420594576.0U patent/CN204201358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591663A (en) * | 2018-05-06 | 2018-09-28 | 朱海军 | High life tetrafluoro compensator |
| CN109630795A (en) * | 2018-11-15 | 2019-04-16 | 刘星 | PP/PPH/PPS/PE soft wave compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20161015 |