CN103983125B - High vacuum multiple layer heat insulation Dewar type container - Google Patents
High vacuum multiple layer heat insulation Dewar type container Download PDFInfo
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- CN103983125B CN103983125B CN201410187583.3A CN201410187583A CN103983125B CN 103983125 B CN103983125 B CN 103983125B CN 201410187583 A CN201410187583 A CN 201410187583A CN 103983125 B CN103983125 B CN 103983125B
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- cold head
- liquid nitrogen
- type container
- heat insulation
- votator
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- 238000009413 insulation Methods 0.000 title claims abstract description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 49
- 238000005057 refrigeration Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention discloses high vacuum multiple layer heat insulation Dewar type container, including multilayer heat insulation Dewar type container body and the seal cover board at top, described multilayer heat insulation Dewar type container body bottom portion is filled with liquid nitrogen, it is characterized in that, the first cold head of refrigeration machine it is provided with in described multilayer heat insulation Dewar type container body cavity volume, second cold head and the 3rd cold head, described first cold head, seal cover board is all run through at the top of the second cold head and the 3rd cold head and bottom is respectively connected with separate exchangers, liquid nitrogen enters pipe and is arranged in multilayer heat insulation Dewar type container body cavity volume through seal cover board, described liquid nitrogen enters and is connected with votator bottom pipe, the described votator other end is connected with liquid nitrogen outlet, described second cold head is positioned at votator inside center, described first cold head and the 3rd cold head are positioned at outside votator.Improve heat transfer efficiency, it is ensured that heat transfer effect and efficiency.
Description
Technical field
The present invention relates to a kind of high vacuum multiple layer heat insulation Dewar type container.
Background technology
Dewar type container (Dewarvessel) is first proposed by French scientist Dewar and makes for 1892, the container being made up of double wall.High vacuum it is pumped into reduce the heat transfer of gas between wall, two electroplates that double wall is relative or polishing are to reduce radiance, so that radiant heat transfer reduces as much as possible, inwall leads to the material of the neck tube poor thermal conduction of room temperature part, as thin-walled stainless steel or with nonmetallic materials make with reduce from room temperature through the solid conductive heat of neck tube material incoming heat, development along with Thermo Isolation Technique, Dewar type container adds again the form of multilayer heat insulation and multi shields insulation, makes the leakage heat of Dewar type container reduce further.
Wherein high vacuum multiple layer heat insulation Dewar type container was also referred to as ice chest, for refrigeration machine, evacuates decompression and circulating liquid nitrogen offer heat transfer space, the liquid nitrogen of circulation is cooled to supercooled state.In actual use, the heat transfer efficiency of high vacuum multiple layer heat insulation Dewar type container is critically important, it is therefore desirable to improve the structure of the high vacuum multiple layer heat insulation Dewar type container of existing design, improves heat transfer efficiency, it is ensured that heat transfer effect and efficiency.
Summary of the invention
For the problems referred to above, the present invention provides a kind of high vacuum multiple layer heat insulation Dewar type container, improves heat transfer efficiency, it is ensured that heat transfer effect and efficiency.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is achieved through the following technical solutions:
High vacuum multiple layer heat insulation Dewar type container, including multilayer heat insulation Dewar type container body and the seal cover board at top, described multilayer heat insulation Dewar type container body bottom portion is filled with liquid nitrogen, it is characterized in that, the first cold head of refrigeration machine it is provided with in described multilayer heat insulation Dewar type container body cavity volume, second cold head and the 3rd cold head, described first cold head, seal cover board is all run through at the top of the second cold head and the 3rd cold head and bottom is respectively connected with separate exchangers, liquid nitrogen enters pipe and is arranged in multilayer heat insulation Dewar type container body cavity volume through seal cover board, described liquid nitrogen enters and is connected with votator bottom pipe, the described votator other end is connected with liquid nitrogen outlet, described second cold head is positioned at votator inside center, described first cold head and the 3rd cold head are positioned at outside votator.
Liquid nitrogen in multilayer heat insulation Dewar type container body cavity volume absorbs the heat of votator interior flowing liquid nitrogen, and more it is proximate to votator, heat around is the most, therefore the second cold head is set in votator inside center, cold head absorbs the heat of liquid nitrogen, can heat exchange the most timely, and the first cold head and the 3rd cold head are positioned at the outside heat exchange simultaneously of votator, surround votator from inside to outside and substantially increase heat transfer efficiency, it is ensured that heat transfer effect and efficiency.
Further, described liquid nitrogen outlet is near the diapire of multilayer heat insulation Dewar type container body.Owing to the bottom temp of liquid nitrogen is lower than top, can effectively reduce heat transfer temperature difference, keep stable temperature.
The invention has the beneficial effects as follows: high vacuum multiple layer heat insulation Dewar type container, improve heat transfer efficiency, it is ensured that heat transfer effect and efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of high vacuum multiple layer heat insulation Dewar type container of the present invention；
Fig. 2 is the top view of Fig. 1；
The mark implication of accompanying drawing is as follows:
1: multilayer heat insulation Dewar type container body；2: liquid nitrogen；3: the first cold heads；4: the second cold heads；5: the three cold heads；6: liquid nitrogen outlet；7: liquid nitrogen enters pipe；8: seal cover board；9: votator；10: stick up plate heat interchanger.
Detailed description of the invention
Being described in further detail technical solution of the present invention with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As depicted in figs. 1 and 2, high vacuum multiple layer heat insulation Dewar type container, including multilayer heat insulation Dewar type container body 1 and the seal cover board 8 at top, described multilayer heat insulation Dewar type container body 1 underfill has in liquid nitrogen 2(figure with shown in pore part), for keeping stablizing of system temperature.
Being provided with the first cold head the 3, second cold head 4 and the 3rd cold head 5 of refrigeration machine in described multilayer heat insulation Dewar type container body 1 cavity volume, first cold head the 3, second cold head 4 and the 3rd cold head 5 are for absorbing the heat of liquid nitrogen 2.In order to improve heat transfer efficiency, being respectively connected with separate exchangers bottom three cold heads, wherein separate exchangers can be to stick up plate heat interchanger 10, or votator 9, Fig. 1 is a kind of oxygen-free copper material stick up plate heat interchanger 10, increase the heat exchange area of cold head and liquid nitrogen 2, improve heat transfer efficiency.
Seal cover board 8 is all run through at the top of described first cold head the 3, second cold head 4 and the 3rd cold head 5.For the ease of distinguishing, liquid nitrogen 2 in multilayer heat insulation Dewar type container body 1 cavity volume is referred to as liquid nitrogen 2, and need the liquid nitrogen carrying out heat exchange to be referred to as the liquid nitrogen flowed to, the liquid nitrogen flowed to enters pipe 7 by liquid nitrogen and enters votator 9, and flowed out by liquid nitrogen outlet 6, wherein liquid nitrogen enters pipe 7 and liquid nitrogen outlet 6 all runs through seal cover board 8, i.e. top and is positioned at outside seal cover board 8, and bottom is positioned at multilayer heat insulation Dewar type container body 1 cavity volume.Described liquid nitrogen enters and is connected with votator 9 bottom pipe 7, and described votator 9 other end is connected with liquid nitrogen outlet 6.
It should be noted that, owing to the bottom temp of liquid nitrogen 2 is lower than top, therefore preferably liquid nitrogen enters the bottom of pipe 7 under liquid nitrogen 2 liquid level between 2-8cm, and liquid nitrogen outlet 6 near or be close to the diapire of multilayer heat insulation Dewar type container body 1, the liquid nitrogen i.e. flowed to enters from top, flow out from bottom, can effectively reduce heat transfer temperature difference, keep stable temperature.As in figure 2 it is shown, described second cold head 4 is positioned at votator 9 inside center, it is outside that described first cold head 3 and the 3rd cold head 5 are positioned at votator 9.
Liquid nitrogen 2 in multilayer heat insulation Dewar type container body 1 cavity volume absorbs the heat of votator 9 interior flowing liquid nitrogen 2, and more it is proximate to votator 9, heat around is the most, therefore the second cold head 4 is set in votator 9 inside center, cold head absorbs the heat of liquid nitrogen 2, can heat exchange the most timely, and the first cold head 3 and the 3rd cold head 5 are positioned at the outside heat exchange simultaneously of votator 9, surround votator 9 from inside to outside and substantially increase heat transfer efficiency, it is ensured that heat transfer effect and efficiency.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, is the most in like manner included in the scope of patent protection of the present invention.
Claims (1)
- null1. high vacuum multiple layer heat insulation Dewar type container，Including multilayer heat insulation Dewar type container body and the seal cover board at top，Described multilayer heat insulation Dewar type container body bottom portion is filled with liquid nitrogen，It is characterized in that，The first cold head of refrigeration machine it is provided with in described multilayer heat insulation Dewar type container body cavity volume、Second cold head and the 3rd cold head，Described first cold head、Seal cover board is all run through at the top of the second cold head and the 3rd cold head and bottom is respectively connected with separate exchangers，Liquid nitrogen enters pipe and is arranged in multilayer heat insulation Dewar type container body cavity volume through seal cover board，Described liquid nitrogen enters and is connected with votator bottom pipe，The top of liquid nitrogen entrance pipe and liquid nitrogen outlet is respectively positioned on outside seal cover board and bottom is positioned at multilayer heat insulation Dewar type container body cavity volume，The described votator other end is connected with liquid nitrogen outlet，Described second cold head is positioned at votator inside center，Described first cold head and the 3rd cold head are positioned at outside votator and surround votator from inside to outside，The diapire of multilayer heat insulation Dewar type container body is close to by described liquid nitrogen outlet，Described separate exchangers is to stick up plate heat interchanger or votator，The described plate heat interchanger that sticks up is oxygen-free copper material，Described liquid nitrogen enters the bottom of pipe under liquid nitrogen liquid level between 2-8cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187583.3A CN103983125B (en) | 2014-05-06 | 2014-05-06 | High vacuum multiple layer heat insulation Dewar type container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187583.3A CN103983125B (en) | 2014-05-06 | 2014-05-06 | High vacuum multiple layer heat insulation Dewar type container |
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| Publication Number | Publication Date |
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| CN103983125A CN103983125A (en) | 2014-08-13 |
| CN103983125B true CN103983125B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106872050A (en) * | 2017-01-19 | 2017-06-20 | 中国科学院上海技术物理研究所 | A kind of Dewar container for liquefied nitrogen of upper surface windowing |
| CN108962484B (en) * | 2018-06-20 | 2019-12-06 | 富通集团（天津）超导技术应用有限公司 | phase-change heat-exchange supercooling box for superconducting cable, cooling system and cooling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2811915Y (en) * | 2005-07-26 | 2006-08-30 | 夏安世 | Heat exchanger |
| CN201572642U (en) * | 2009-12-14 | 2010-09-08 | 淄博万昌科技股份有限公司 | Reaction kettle with novel heat exchange device |
| CN202860164U (en) * | 2012-08-30 | 2013-04-10 | 海工英派尔工程有限公司 | Skid-mounted natural gas reliquefaction device |
| CN103615915A (en) * | 2013-12-03 | 2014-03-05 | 四川飞阳科技有限公司 | Cooling device |
| CN203869544U (en) * | 2014-05-06 | 2014-10-08 | 昆山达功电子有限公司 | High vacuum multi-layer heat insulation dewar container |
-
2014
- 2014-05-06 CN CN201410187583.3A patent/CN103983125B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2811915Y (en) * | 2005-07-26 | 2006-08-30 | 夏安世 | Heat exchanger |
| CN201572642U (en) * | 2009-12-14 | 2010-09-08 | 淄博万昌科技股份有限公司 | Reaction kettle with novel heat exchange device |
| CN202860164U (en) * | 2012-08-30 | 2013-04-10 | 海工英派尔工程有限公司 | Skid-mounted natural gas reliquefaction device |
| CN103615915A (en) * | 2013-12-03 | 2014-03-05 | 四川飞阳科技有限公司 | Cooling device |
| CN203869544U (en) * | 2014-05-06 | 2014-10-08 | 昆山达功电子有限公司 | High vacuum multi-layer heat insulation dewar container |
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| CN103983125A (en) | 2014-08-13 |
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Inventor after: Zheng Jianxiong Inventor before: Ren Yuwen |
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Effective date of registration: 20160720 Address after: Suzhou City, Jiangsu province 215316 high tech Zone in Kunshan City, North Okitomo Road No. 10 Applicant after: KUNSHAN YIBANGTAI AUTO PARTS MANUFACTURING CO., LTD. Address before: 215325 Kunshan, Suzhou, Zhouzhuang Town Industrial Park Ming Road Applicant before: Kunshan Dagong Electronics Co., Ltd. |
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Effective date of registration: 20200430 Address after: 102600 Unit 403, Unit 1, 15th Floor, Changfengyuan, Huangcun Town, Daxing District, Beijing Patentee after: Du Lihong Address before: 215325 Ming Road, Zhouzhuang Town Industrial Park, Suzhou, Jiangsu, Kunshan Patentee before: KUNSHAN DAGONG ELECTRONICS Co.,Ltd. |
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Address after: 241000 economic and Technological Development Zone Phase II, Nanling County, Wuhu City, Anhui Province Patentee after: Du Lihong Address before: 102600 Unit 403, Unit 1, 15th Floor, Changfengyuan, Huangcun Town, Daxing District, Beijing Patentee before: Du Lihong |
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Effective date of registration: 20210721 Address after: Room 421, unit 1, floor 4, No. 8, Chaoyang Road, Chaoyang District, Beijing 100020 Patentee after: BEIJING CHAOYANG CHANG'AN MECHANICAL AND ELECTRONIC TECHNOLOGY INSTITUTE Address before: 241000 phase II of Nanling economic and Technological Development Zone, Wuhu City, Anhui Province Patentee before: Du Lihong |
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