CN102072363A - Multi-layer single vacuum compound heat-insulation pipe - Google Patents
Multi-layer single vacuum compound heat-insulation pipe Download PDFInfo
- Publication number
- CN102072363A CN102072363A CN2011100207022A CN201110020702A CN102072363A CN 102072363 A CN102072363 A CN 102072363A CN 2011100207022 A CN2011100207022 A CN 2011100207022A CN 201110020702 A CN201110020702 A CN 201110020702A CN 102072363 A CN102072363 A CN 102072363A
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- layer
- insulating
- composite heat
- vacuum composite
- pipe
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- 238000009413 insulation Methods 0.000 title abstract description 11
- 150000001875 compounds Chemical class 0.000 title abstract 3
- 230000005855 radiation Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011889 copper foil Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 41
- 239000002131 composite material Substances 0.000 claims description 30
- 239000011241 protective layer Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000005030 aluminium foil Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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Abstract
The invention relates to a multi-layer single vacuum compound heat-insulation pipe comprising an inner pipe and an outer pipe. The multi-layer single vacuum compound heat-insulation pipe is characterized in that at least one layer of reflecting layer (3) is arranged between the inner pipe (1) and the outer pipe (2), the inner pipe and the outer pipe are divided into an inner layer of space and an outer layer of space or a plurality of layers of spaces along a radial direction by the reflecting layer, every two spaces are mutually communicated, each space is also in vacuum pumping, the inner pipe, the outer pipe and the reflecting layer are made of a stainless-steel material, the outer surface of the inner pipe and the outer surface of the reflecting layer are both provided with a radiation preventing layer (4), and each radiation preventing layer comprises one layer or a plurality of layers of copper foil or aluminium foil materials with the performance of preventing radiation. The invention has the advantages of simple structure, small volume, good heat-insulation effect and strong performance of resisting high temperature and is especially suitable for the heat transmission of the fields of solar power generation, heating and petrochemical engineering.
Description
Technical field
The present invention relates to the high temperature media delivery pipe, relate in particular to a kind of single vacuum composite heat-insulating of multilayer that is used to carry high-temperature steam, oil or fuse salt, be suitable for the heat transport of solar electrical energy generation, heating and chemical field.
Background technique
Heat transfer tube is a kind of pipeline that is widely used in solar electrical energy generation, heating and petrochemical industry, existing heat transfer tube generally is that the outer surface in common pipe wraps up one or more layers thermal insulating material, in field of solar thermal power generation, require heat transfer tube to have good heat insulation effect and the heat conveyance performance more than 200 ℃, so just need be at the outer surface wrapped multiple thermal insulating material of common pipe, cause heat transfer tube thicker, install complicated, it is big to take up room, not environmental protection, and the heat transport loss is serious.
Chinese patent CN00815996 discloses a kind of name and has been called " insulating tubular complex of pipeline " patent of invention, though this patent discloses a kind of structure that one deck covering is set between inner and outer pipes, but because this covering adopts formations such as soft membrane material, its resistance to high temperature is poor, can only work below 150 ℃, can not be applied to the heat transport more than 200 ℃.
Summary of the invention
The objective of the invention is provides a kind of high insulating effect in order to solve the deficiency that the above-mentioned background technology exists, and the insulation life-span is long, the single vacuum composite heat-insulating of resistant to elevated temperatures multilayer.
For achieving the above object, the present invention adopts following technological scheme: the single vacuum composite heat-insulating of multilayer, pipe and outer tube in comprising, it is characterized in that, be provided with one deck reflecting layer 3 at least between pipe 1 and the outer tube 2 in described, the reflecting layer will radially be divided into inside and outside two-layer or multilayer space between interior pipe and the outer tube, be connected between each space and vacuumize, pipe, outer tube and reflecting layer are stainless steel material in described, be equipped with radiation protective layer 4 at inner tube outer surface and reflecting layer outer surface, this radiation protective layer is made of Copper Foil or the aluminum foil material that one or more layers has shielding property.
Specifically, in the reflecting layer 3 and radiation protective layer 4 surfaces be provided with the through hole that is communicated with interior or exterior space.This through hole makes each space form same degree of vacuum inside and outside each spatial communication.
Preferably, be filled with vacuum glass ball or fiber in the space between reflecting layer 3 and interior pipe 1, to strengthen the radiation proof heat-shielding performance.
Preferably, an end of the single vacuum composite heat-insulating of described multilayer is outer step surface, and the other end is interior step surface, and the outer step surface of adjacent two root multi-layer list vacuum composite heat-insulatings cooperates with interior step surface.
Furtherly, described outer step surface is provided with one section bellows 5, in order to expand with heat and contract with cold effect and reduce the joint thermal loss of adjusting.
Preferably, be provided with between described outer tube 2 and the reflecting layer 3 and set upright part 7.
Preferably, also be provided with one section bellows 5 on the described outer tube, in order to the adjusting effect of expanding with heat and contract with cold.
Preferably, be respectively equipped with flange plate 6, connect with bolt between the flange plate 6 of adjacent two root multi-layer list vacuum composite heat-insulating joints, and seal with Sealing at every root multi-layer list vacuum composite heat-insulating two ends.
Preferably, be respectively equipped with connecting bolt 8 and attaching nut 9, cooperate between the connecting bolt 8 of adjacent two root multi-layer list vacuum composite heat-insulating joints and the attaching nut 9, and the cooperation place be provided with Sealing at every root multi-layer list vacuum composite heat-insulating two ends.
Preferably, tube outer surface is provided with protective layer outside, with the protection outer tube, strengthens effect of heat insulation.
Because the present invention adopts the single vacuum composite heat-insulating structure of multilayer, and one deck Stainless Steel Reflector of Core at least is set in the same vacuum space between inner and outer pipes, the reflecting layer outer surface is provided with radiation protective layer, because Stainless Steel Reflector of Core is divided into a plurality of spaces with degree of vacuum with same vacuum space, both played reflecting action, avoided the transmission of heat of radiation protective layer again, therefore, the present invention has good heat insulation effect and high temperature resistant transmission, its connection part also can effectively prevent heat leak, increase substantially the heat-shielding performance of single vacuum composite heat-insulating of multilayer itself and joint, prolonged the insulation life-span.
The present invention has simple in structure, and volume is little, high insulating effect, and the advantage that resistance to high temperature is strong is specially adapted to the heat transport of solar electrical energy generation, heating and petrochemical industry.
Below by drawings and Examples the present invention is described in further details, so that technician's of the same trade understanding.
Description of drawings
Fig. 1 is a first segment heat insulating tube structural representation of the present invention;
Fig. 2 is a final section heat insulating tube structural representation of the present invention;
Fig. 3 is first segment and final section heat insulating tube flange splicing schematic representation;
Fig. 4 is a segmentum intercalaris heat insulating tube structural representation among the present invention;
Fig. 5 is adjacent centre two joint heat insulating tube flange splicing schematic representation.
The adjacent two joint heat insulating tube screw thread splicing schematic representation of Fig. 6.
In the drawings, pipe in the 1-, the 2-outer tube, the 3-reflecting layer, the 4-radiation protective layer, the 5-bellows, the 6-flange plate, 7-sets upright part, 8-connecting bolt, 9-attaching nut.
Embodiment
The present invention is divided into first segment heat insulating tube, middle segmentum intercalaris heat insulating tube and final section heat insulating tube.Wherein, the first segment heat insulating tube is to be positioned at the top joint of whole transfer conduit, and the final section heat insulating tube is to be positioned at the most last joint of whole transfer conduit, and middle segmentum intercalaris heat insulating tube is to be positioned at the middle any joint of whole transfer conduit.In a transfer conduit, adopt first segment heat insulating tube, final section heat insulating tube and some middle segmentum intercalaris heat insulating tubes among the present invention to be spliced.
Embodiment 1: referring to Fig. 1, present embodiment is the first segment heat insulating tube, pipe 1 and outer tube 2 in comprising, be provided with one deck reflecting layer 3 between pipe 1 and the outer tube 2 in described, this reflecting layer will radially be divided into inside and outside two sheaf spaces between interior pipe and the outer tube, described interior pipe, outer tube and reflecting layer are stainless steel material, are provided with one section bellows 5 on outer tube, between outer tube 2 and reflecting layer 3, be provided with and set upright part 7, be used for 3 location, reflecting layer.Be equipped with radiation protective layer 4 at inner tube outer surface and reflecting layer outer surface, this radiation protective layer is made of Copper Foil or the aluminum foil material that one or more layers has shielding property.In the reflecting layer 3 and radiation protective layer 4 surfaces be provided with the through hole that is communicated with interior or exterior space, this through hole makes each space form same degree of vacuum inside and outside each spatial communication.
One end of described first segment heat insulating tube is interior step surface, and two ends are provided with flange plate 6.
Embodiment 2: referring to Fig. 2, present embodiment is the final section heat insulating tube.Present embodiment is substantially the same manner as Example 1, and difference is that an end of final section heat insulating tube is outer step surface, and this outer step surface can match with the interior step surface of first segment heat insulating tube one end, and its phase distribution structure is seen Fig. 3.Final section heat insulating tube two ends are provided with flange plate 6, and fitting surface seals with Sealing between final section heat insulating tube and the first segment heat insulating tube flange plate 6, and connects with bolt.
In addition, on the outer step surface of described final section heat insulating tube one end, be provided with one section bellows 5.
Embodiment 3: referring to Fig. 3, present embodiment is middle segmentum intercalaris heat insulating tube.Present embodiment is substantially the same manner as Example 1, and difference is that middle segmentum intercalaris heat insulating tube one end is outer step surface, and the other end is interior step surface, and the outer step surface of adjacent two middle segmentum intercalaris heat insulating tubes cooperates with interior step surface.Middle segmentum intercalaris heat insulating tube two ends are provided with flange plate 6, and fitting surface seals with Sealing between adjacent two middle segmentum intercalaris heat insulating tube flange plate 6, and connects with bolt.
Outside every middle segmentum intercalaris heat insulating tube, be provided with one section bellows 5 on the step surface.
Referring to Fig. 6, in above-mentioned three embodiments, also can be respectively equipped with connecting bolt 8 and attaching nut 9, cooperate between the connecting bolt 8 of adjacent two root multi-layer list vacuum composite heat-insulating joints and the attaching nut 9, and the cooperation place be provided with Sealing at every root multi-layer list vacuum composite heat-insulating two ends.
Can outside every joint heat insulating tube, be provided with protective layer by tube outer surface in addition,, strengthen effect of heat insulation with the protection outer tube.
The present invention adopts bellows not only can regulate the pipeline elongation that raises and cause because of pipe temperature, can also prolong adjacent channel joint heat transfer path, has reduced the joint thermal loss.
The present invention not only itself has good heat insulation and preservation effect, and connection part also has good heat-shielding performance between the adjacent channel.Be suitable for the heat transport of solar electrical energy generation, heating and chemical field.
Claims (10)
1. the single vacuum composite heat-insulating of multilayer, pipe and outer tube in comprising, it is characterized in that, be provided with one deck reflecting layer (3) at least between pipe (1) and the outer tube (2) in described, the reflecting layer will radially be divided into inside and outside two-layer or multilayer space between interior pipe and the outer tube, be connected between each space and vacuumize, pipe, outer tube and reflecting layer are stainless steel material in described, be equipped with radiation protective layer (4) at inner tube outer surface and reflecting layer outer surface, this radiation protective layer is made of Copper Foil or the aluminum foil material that one or more layers has shielding property.
2. the single vacuum composite heat-insulating of multilayer according to claim 1 is characterized in that (3) and radiation protective layer (4) surface is provided with the through hole that is communicated with interior or exterior space in the reflecting layer.
3. the single vacuum composite heat-insulating of multilayer according to claim 1 is characterized in that, is filled with vacuum glass ball or fiber in the space between reflecting layer (3) and interior pipe (1).
4. the single vacuum composite heat-insulating of multilayer according to claim 1, it is characterized in that, one end of the single vacuum composite heat-insulating of described multilayer is outer step surface, and the other end is interior step surface, and the outer step surface of adjacent two root multi-layer list vacuum composite heat-insulatings cooperates with interior step surface.
5. the single vacuum composite heat-insulating of multilayer according to claim 4 is characterized in that described outer step surface is provided with one section bellows (5).
6. the single vacuum composite heat-insulating of multilayer according to claim 1 is characterized in that, is provided with between described outer tube (2) and reflecting layer (3) and sets upright part (7).
7. according at least one single vacuum composite heat-insulating of the described multilayer of claim in the claim 1 to 6, it is characterized in that described outer tube is provided with one section bellows (5).
8. according at least one single vacuum composite heat-insulating of the described multilayer of claim in the claim 1 to 6, it is characterized in that, be respectively equipped with flange plate (6) at every root multi-layer list vacuum composite heat-insulating two ends, connect with bolt between the flange plate (6) of adjacent two root multi-layer list vacuum composite heat-insulating joints, and seal with Sealing.
9. according at least one single vacuum composite heat-insulating of the described multilayer of claim in the claim 1 to 6, it is characterized in that, be respectively equipped with bolt (8) and nut (9) at every root multi-layer list vacuum composite heat-insulating two ends, cooperate between the bolt (8) of adjacent two root multi-layer list vacuum composite heat-insulating joints and the nut (9), and the cooperation place is provided with Sealing.
10. according at least one single vacuum composite heat-insulating of the described multilayer of claim in the claim 1 to 6, it is characterized in that tube outer surface is provided with protective layer outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110020702 CN102072363B (en) | 2011-01-19 | 2011-01-19 | Multi-layer single vacuum compound heat-insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110020702 CN102072363B (en) | 2011-01-19 | 2011-01-19 | Multi-layer single vacuum compound heat-insulation pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102072363A true CN102072363A (en) | 2011-05-25 |
| CN102072363B CN102072363B (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110020702 Active CN102072363B (en) | 2011-01-19 | 2011-01-19 | Multi-layer single vacuum compound heat-insulation pipe |
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| Country | Link |
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| CN (1) | CN102072363B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154641A (en) * | 2016-03-04 | 2019-01-04 | 概念集团有限责任公司 | Vacuum heat-insulation product with reflecting material enhancing |
| CN109595428A (en) * | 2018-12-04 | 2019-04-09 | 中国核动力研究设计院 | A kind of nuclear leve equipment and pipeline fill out shielding material insulating layer with unilateral side |
| CN110906088A (en) * | 2019-11-22 | 2020-03-24 | 江苏中森建筑设计有限公司 | Prevent soaking through concrete pipe |
| CN111465800A (en) * | 2017-08-25 | 2020-07-28 | 概念集团有限责任公司 | Multi-geometry and multi-material thermal insulation component |
| US10923691B2 (en) | 2015-08-24 | 2021-02-16 | Concept Group, Llc | Sealed packages for electronic and energy storage devices |
| US11008153B2 (en) | 2016-11-15 | 2021-05-18 | Concept Group Llp | Multiply-insulated assemblies |
| US11204127B2 (en) | 2012-10-03 | 2021-12-21 | Concept Group, Llc | Vacuum insulated structure with end fitting and method of making same |
| CN114593275A (en) * | 2022-03-25 | 2022-06-07 | 安徽英标新材料科技有限公司 | Corrosion-resistant drain pipe and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2564837Y (en) * | 2002-08-16 | 2003-08-06 | 王浣生 | Vacuum thermal insulation pipeline |
| CN1945094A (en) * | 2006-10-30 | 2007-04-11 | 周清 | Heat reflective high temperature heat insulation pipe and its producing method |
| CN201363512Y (en) * | 2009-03-12 | 2009-12-16 | 闫万河 | Vacuum heat-insulation high-temperature pipeline |
| KR20110001021A (en) * | 2009-06-29 | 2011-01-06 | 이무진 | Complex reflective heat insulator |
| CN202040486U (en) * | 2011-01-19 | 2011-11-16 | 湖北贵族真空科技股份有限公司 | Multilayer single vacuum compound insulated tube |
-
2011
- 2011-01-19 CN CN 201110020702 patent/CN102072363B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2564837Y (en) * | 2002-08-16 | 2003-08-06 | 王浣生 | Vacuum thermal insulation pipeline |
| CN1945094A (en) * | 2006-10-30 | 2007-04-11 | 周清 | Heat reflective high temperature heat insulation pipe and its producing method |
| CN201363512Y (en) * | 2009-03-12 | 2009-12-16 | 闫万河 | Vacuum heat-insulation high-temperature pipeline |
| KR20110001021A (en) * | 2009-06-29 | 2011-01-06 | 이무진 | Complex reflective heat insulator |
| CN202040486U (en) * | 2011-01-19 | 2011-11-16 | 湖北贵族真空科技股份有限公司 | Multilayer single vacuum compound insulated tube |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11204127B2 (en) | 2012-10-03 | 2021-12-21 | Concept Group, Llc | Vacuum insulated structure with end fitting and method of making same |
| US10923691B2 (en) | 2015-08-24 | 2021-02-16 | Concept Group, Llc | Sealed packages for electronic and energy storage devices |
| CN109154641A (en) * | 2016-03-04 | 2019-01-04 | 概念集团有限责任公司 | Vacuum heat-insulation product with reflecting material enhancing |
| US11008153B2 (en) | 2016-11-15 | 2021-05-18 | Concept Group Llp | Multiply-insulated assemblies |
| US11548717B2 (en) | 2016-11-15 | 2023-01-10 | Concept Group Llc | Multiply-insulated assemblies |
| CN111465800A (en) * | 2017-08-25 | 2020-07-28 | 概念集团有限责任公司 | Multi-geometry and multi-material thermal insulation component |
| US11320086B2 (en) | 2017-08-25 | 2022-05-03 | Concept Group Llc | Multiple geometry and multiple material insulated components |
| CN109595428A (en) * | 2018-12-04 | 2019-04-09 | 中国核动力研究设计院 | A kind of nuclear leve equipment and pipeline fill out shielding material insulating layer with unilateral side |
| CN109595428B (en) * | 2018-12-04 | 2021-08-24 | 中国核动力研究设计院 | Single-side filling shielding material heat-insulating layer for nuclear-grade equipment and pipeline |
| CN110906088A (en) * | 2019-11-22 | 2020-03-24 | 江苏中森建筑设计有限公司 | Prevent soaking through concrete pipe |
| CN110906088B (en) * | 2019-11-22 | 2021-08-17 | 江苏中森建筑设计有限公司 | Prevent soaking through concrete pipe |
| CN114593275A (en) * | 2022-03-25 | 2022-06-07 | 安徽英标新材料科技有限公司 | Corrosion-resistant drain pipe and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102072363B (en) | 2013-06-19 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Multilayer single vacuum composite heat insulation pipe Effective date of registration: 20220120 Granted publication date: 20130619 Pledgee: Bank of China Limited Huanggang branch Pledgor: HUBEI GUIZU VACUUM SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2022420000022 |
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Date of cancellation: 20230918 Granted publication date: 20130619 Pledgee: Bank of China Limited Huanggang branch Pledgor: HUBEI GUIZU VACUUM SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2022420000022 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Multi layer single vacuum composite insulation pipe Granted publication date: 20130619 Pledgee: Bank of China Limited Huanggang branch Pledgor: HUBEI GUIZU VACUUM SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2024980006732 |