CN110566802A - Special-shaped heat insulation supporting structure of horizontal liquid hydrogen container - Google Patents
Special-shaped heat insulation supporting structure of horizontal liquid hydrogen container Download PDFInfo
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- CN110566802A CN110566802A CN201910851609.2A CN201910851609A CN110566802A CN 110566802 A CN110566802 A CN 110566802A CN 201910851609 A CN201910851609 A CN 201910851609A CN 110566802 A CN110566802 A CN 110566802A
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- 239000007788 liquid Substances 0.000 title claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000001257 hydrogen Substances 0.000 title claims abstract description 31
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 31
- 238000009413 insulation Methods 0.000 title claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0308—Radiation shield
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明公开了一种卧式液氢容器的异形绝热支撑结构，包括：内管和外管，内管的内端插入至外管的内端中，并且内管内端和外管内端相连接固定，内管的外端用于与内筒体或者外筒体的封头相固定，外管的外端用于与内、外筒体中未与内管相固定的那个筒体的封头相固定。上述的异形绝热支撑结构比较简单，制造方便，并且能在内外筒体之间有限的空间内通过内管插入至外管中、以及通过延长内管内端和外管内端之间的连接长度来延长导热路径，从而能大大降低内筒体中外部热量的导入量，使得液氢真空绝热气瓶的绝热效率能提高50%以上。
The invention discloses a special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, comprising: an inner tube and an outer tube, the inner end of the inner tube is inserted into the inner end of the outer tube, and the inner end of the inner tube is connected and fixed to the inner end of the outer tube , the outer end of the inner tube is used to be fixed with the head of the inner cylinder or the outer cylinder, and the outer end of the outer tube is used to be fixed with the head of the cylinder that is not fixed with the inner tube among the inner and outer cylinders fixed. The above special-shaped heat insulating support structure is relatively simple, easy to manufacture, and can be inserted into the outer tube through the inner tube in the limited space between the inner and outer cylinders, and can be extended by extending the connection length between the inner end of the inner tube and the inner end of the outer tube. The heat conduction path can greatly reduce the amount of external heat introduced into the inner cylinder, so that the heat insulation efficiency of the liquid hydrogen vacuum insulation cylinder can be increased by more than 50%.
Description
技术领域technical field
本发明涉及液氢容器领域，具体涉及液氢容器内外筒体之间的端部绝热支撑结构。The invention relates to the field of liquid hydrogen containers, in particular to an end heat insulating support structure between the inner and outer cylinders of the liquid hydrogen container.
背景技术Background technique
液氢容器由外筒体和位于外筒体中的内筒体组成，内筒体通过两端的支撑结构支撑于外筒体中，通常内筒体前端的支撑结构为两端分别与内、外筒体相固定的金属直管，金属直管的长度由于受到内外筒体之间间隔的限制而设置的较短，这样外部热量就容易沿着较短的金属直管传导至内筒体中，成为外部热量传导至内筒体中的主要渠道，使得内筒体中的低温液体容易蒸发。The liquid hydrogen container is composed of an outer cylinder and an inner cylinder located in the outer cylinder. The inner cylinder is supported in the outer cylinder by the support structures at both ends. Usually, the support structure at the front end of the inner cylinder is that the two ends are respectively connected to the inner and outer cylinders. The cylinder is fixed to the metal straight tube. The length of the metal straight tube is set shorter due to the limitation of the distance between the inner and outer cylinders, so that the external heat can easily be conducted to the inner cylinder along the shorter metal straight tube. It becomes the main channel for external heat conduction to the inner cylinder, making the low-temperature liquid in the inner cylinder easy to evaporate.
发明内容Contents of the invention
本发明所要解决的技术问题是：将提供一种能减少外部热量传导至内筒体中的卧式液氢容器的异形绝热支撑结构。The technical problem to be solved by the present invention is to provide a special-shaped heat-insulating support structure of the horizontal liquid hydrogen container that can reduce the conduction of external heat to the inner cylinder.
为了解决上述问题，本发明所采用的技术方案为：一种卧式液氢容器的异形绝热支撑结构，其特征在于：包括：内管和外管，内管的内端插入至外管的内端中，并且内管内端和外管内端相连接固定，内管的外端用于与内筒体或者外筒体的封头相固定，外管的外端用于与内、外筒体中未与内管相固定的那个筒体的封头相固定。In order to solve the above problems, the technical solution adopted in the present invention is: a special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, which is characterized in that it includes: an inner tube and an outer tube, and the inner end of the inner tube is inserted into the inner tube of the outer tube and the inner end of the inner tube is connected and fixed with the inner end of the outer tube, the outer end of the inner tube is used to fix the head of the inner cylinder or the outer cylinder, and the outer end of the outer tube is used to connect with the inner and outer cylinders. The head of the cylinder that is not fixed to the inner tube is fixed.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：内管内端插入至外管中的距离超过外管长度的一半。Furthermore, in the aforementioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, the distance from the inner end of the inner tube inserted into the outer tube exceeds half of the length of the outer tube.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：在内管和外管之间设置有一根套装于内管外侧的过渡管，过渡管与内、外管相间隔布置，过渡管上与内管内端同侧的一端与内管内端相连接固定，过渡管上与外管内端同侧的一端与外管内端相连接固定。Further, the above-mentioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, wherein: a transition tube sleeved on the outside of the inner tube is arranged between the inner tube and the outer tube, and the transition tube is arranged at intervals from the inner and outer tubes The end of the transition pipe on the same side as the inner end of the inner pipe is connected and fixed with the inner end of the inner pipe, and the end of the transition pipe on the same side as the inner end of the outer pipe is connected and fixed with the inner end of the outer pipe.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：过渡管的两端分别通过纵截面上的板形呈弧形的环形封板与所对应的内、外管内端相连接固定。Further, the above-mentioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, wherein: the two ends of the transition pipe are respectively connected to the inner ends of the corresponding inner and outer pipes through the plate-shaped and arc-shaped annular sealing plates on the longitudinal section. The connection is fixed.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：还包括：用于使内管、外管、以及它们之间的连接部所围内腔与外部相连通的通气孔。Furthermore, the above-mentioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container further includes: a vent hole for communicating the inner cavity surrounded by the inner tube, the outer tube, and the connection between them with the outside .
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：通气孔设置于外管的管壁上。Further, the above-mentioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, wherein: vent holes are arranged on the tube wall of the outer tube.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：还包括：设置于外筒体封头上的开孔和用于焊接封盖于外筒体封头开孔中的补强盖板，内、外管中准备与外筒体封头相固定的那个管子的外端用于与补强盖板相焊接固定。Further, the above-mentioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, which also includes: an opening arranged on the head of the outer cylinder and a hole for welding and sealing in the opening of the head of the outer cylinder Reinforcing cover plate, the outer end of the pipe prepared to be fixed with the head of the outer cylinder in the inner and outer pipes is used for welding and fixing with the reinforcing cover plate.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：在内管、外管、以及它们连接部的内外侧均缠绕包覆有绝热层，绝热层由玻纤隔热纸和铝箔反射屏组成，铝箔反射屏位于玻纤隔热纸的外侧。Further, the aforementioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, wherein: the inside and outside of the inner tube, the outer tube, and their connecting parts are wrapped with a heat-insulating layer, and the heat-insulating layer is made of glass fiber heat-insulating paper Composed of aluminum foil reflective screen, the aluminum foil reflective screen is located outside the glass fiber heat insulation paper.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：在内管和外管之间设置有一根套装于内管外侧的异形管，异形管与内、外管相间隔布置，内管和外管内端分别与异形管的管壁一端相连接固定。Further, the aforementioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, wherein: a special-shaped tube is set between the inner tube and the outer tube, and the special-shaped tube is arranged at intervals from the inner and outer tubes , the inner ends of the inner tube and the outer tube are respectively connected and fixed with one end of the tube wall of the special-shaped tube.
进一步的，前述的一种卧式液氢容器的异形绝热支撑结构，其中：异形管纵截面上的管壁呈内外往返弯折的蛇形走向布置。Further, the above-mentioned special-shaped heat-insulating support structure for a horizontal liquid hydrogen container, wherein: the pipe wall on the longitudinal section of the special-shaped pipe is arranged in a serpentine direction with internal and external bending back and forth.
本发明的优点为：本发明所述的异形绝热支撑结构比较简单，制造方便，并且能在内外筒体之间有限的空间内通过内管插入至外管中、以及通过延长内管内端和外管内端之间的连接长度来延长导热路径，从而能大大降低内筒体中外部热量的导入量，使得液氢真空绝热气瓶的绝热效率能提高50%以上。The advantages of the present invention are: the special-shaped heat insulating support structure described in the present invention is relatively simple, easy to manufacture, and can be inserted into the outer tube through the inner tube in the limited space between the inner and outer cylinders, and can be inserted into the outer tube by extending the inner end of the inner tube and the outer tube. The connection length between the inner ends of the tubes is used to extend the heat conduction path, which can greatly reduce the amount of external heat introduced into the inner cylinder, so that the heat insulation efficiency of the liquid hydrogen vacuum insulated gas cylinder can be increased by more than 50%.
附图说明Description of drawings
图1为本发明所述的一种卧式液氢容器的异形绝热支撑结构的一种结构的剖视结构示意图。Fig. 1 is a schematic cross-sectional structural view of a structure of a special-shaped heat insulating support structure of a horizontal liquid hydrogen container according to the present invention.
图2为本发明所述的一种卧式液氢容器的异形绝热支撑结构的另一种结构的剖视结构示意图。Fig. 2 is a cross-sectional schematic diagram of another structure of a special-shaped heat-insulating support structure of a horizontal liquid hydrogen container according to the present invention.
具体实施方式Detailed ways
下面结合具体实施例和附图对本发明作进一步的详细描述。The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
如图1所示，一种卧式液氢容器的异形绝热支撑结构，包括：内管2和外管1，内管2的内端插入至外管1的内端中，并且内管2内端和外管1内端相连接固定，在本实施例中，内管2内端插入至外管1中的距离超过外管1长度的一半，这样设置是为了延长外管1内端和内管2内端之间的导热路径，使得热量不容易传导进来；内管2的外端用于与内筒体8的封头相固定，外管1的外端用于与外筒体7的封头相固定。As shown in Figure 1, a special-shaped heat-insulating support structure for a horizontal liquid hydrogen container includes: an inner tube 2 and an outer tube 1, the inner end of the inner tube 2 is inserted into the inner end of the outer tube 1, and the inner tube 2 end and the inner end of the outer tube 1 are connected and fixed. In this embodiment, the distance from the inner end of the inner tube 2 inserted into the outer tube 1 exceeds half of the length of the outer tube 1. This arrangement is to extend the inner end of the outer tube 1 and the inner end of the outer tube 1. The heat conduction path between the inner ends of the tubes 2 makes it difficult for the heat to be conducted in; The head is fixed.
为了使内管2内端和外管1内端相连接固定，使得内筒体8能被支撑于外筒体7中，在本实施例中，在内管2和外管1之间设置有一根套装于内管2外侧的过渡管3，过渡管3与内、外管2、1相间隔布置，过渡管3上与内管2内端同侧的一端与内管2内端相连接固定，过渡管3上与外管1内端同侧的一端与外管1内端相连接固定。并且过渡管3的两端分别通过纵截面上的板形呈弧形的环形封板4与所对应的内、外管2、1内端相连接固定。这样设置后能使内管2内端和外管1内端稳固的连接固定，并且能使异形绝热支撑结构便于制造。In order to connect and fix the inner end of the inner tube 2 and the inner end of the outer tube 1 so that the inner cylinder 8 can be supported in the outer cylinder 7, in this embodiment, a The transition pipe 3 is set on the outer side of the inner pipe 2, the transition pipe 3 is spaced apart from the inner and outer pipes 2 and 1, and the end of the transition pipe 3 on the same side as the inner end of the inner pipe 2 is connected and fixed to the inner end of the inner pipe 2 One end of the transition pipe 3 on the same side as the inner end of the outer pipe 1 is connected and fixed to the inner end of the outer pipe 1 . And the two ends of the transition pipe 3 are respectively connected and fixed to the inner ends of the corresponding inner and outer pipes 2 and 1 through the plate-shaped and arc-shaped annular sealing plate 4 on the longitudinal section. After such arrangement, the inner end of the inner pipe 2 and the inner end of the outer pipe 1 can be firmly connected and fixed, and the special-shaped heat-insulating support structure can be easily manufactured.
在本实施例中，异形绝热支撑结构，还包括：用于使内管2、外管1、以及它们之间的连接部所围内腔与外部相连通的通气孔6。这样设置是为了使异形绝热支撑结构的内腔能与内外筒体之间的夹层相连通，从而达到在抽真空后内外环境相同的目的。为了方便加工，通气孔6设置于外管1的管壁上。In this embodiment, the special-shaped heat-insulating support structure further includes: a ventilation hole 6 for communicating the inner cavity surrounded by the inner tube 2, the outer tube 1, and the connection between them with the outside. This setting is to make the inner cavity of the special-shaped heat-insulating support structure communicate with the interlayer between the inner and outer cylinders, so as to achieve the same purpose of the inner and outer environments after vacuuming. For the convenience of processing, the ventilation hole 6 is arranged on the tube wall of the outer tube 1 .
为了方便异形绝热支撑结构的安装，异形绝热支撑结构，还包括：设置于外筒体7封头上的开孔51和用于焊接封盖于外筒体7封头开孔51中的补强盖板5，外管1的外端用于与补强盖板5相焊接固定。异形绝热支撑结构安装时，首先将内管2外端与内筒体8的封头相焊接固定，然后将补强盖板5焊接于外管1的外端上，并且在外筒体7的封头上开设一个与补强盖板5大小相匹配的开孔51，接着将补强盖板5由内向外封盖于开孔51上，然后在外面对补强盖板5进行焊接，使得补强盖板5固定封盖于开孔51上，这样异形绝热支撑结构就能安装于外筒体7和内筒体8的封头之间。由于内外筒体封头之间的间隔很小，无法在内部对外管1外端和外筒体7封头进行焊接，所以需要设置补强盖板5和开孔51来便于外管1外端与外筒体7封头相固定。In order to facilitate the installation of the special-shaped heat-insulating support structure, the special-shaped heat-insulated support structure also includes: an opening 51 arranged on the head of the outer cylinder 7 and a reinforcement for welding and sealing in the opening 51 of the head of the outer cylinder 7 The cover plate 5 and the outer end of the outer tube 1 are used for welding and fixing with the reinforcing cover plate 5 . When installing the special-shaped heat-insulating support structure, firstly, the outer end of the inner tube 2 is welded and fixed to the head of the inner cylinder 8, and then the reinforcing cover plate 5 is welded to the outer end of the outer tube 1, and the outer end of the outer cylinder 7 is welded and fixed. Open an opening 51 matching the size of the reinforcing cover plate 5 on the head, then seal the reinforcing cover plate 5 on the opening 51 from the inside to the outside, and then weld the reinforcing cover plate 5 on the outside to make the reinforcing cover plate 5 The strong cover plate 5 is fixedly sealed on the opening 51, so that the special-shaped heat-insulating support structure can be installed between the heads of the outer cylinder 7 and the inner cylinder 8. Since the distance between the heads of the inner and outer cylinders is very small, it is impossible to weld the outer end of the outer tube 1 and the head of the outer cylinder 7 inside, so it is necessary to set a reinforcing cover plate 5 and an opening 51 to facilitate the welding of the outer end of the outer tube 1. It is fixed with the 7 heads of the outer cylinder.
本实施例中所述的异形绝热支撑结构采用耐低温不锈钢或者其他耐低温合金一体铸造而成，这样可以保证异形绝热支撑结构的支撑强度。The special-shaped heat-insulating support structure described in this embodiment is integrally cast by low-temperature-resistant stainless steel or other low-temperature-resistant alloys, which can ensure the support strength of the special-shaped heat-insulation support structure.
在本实施例中，在内管2、外管1、以及它们连接部的内外侧均缠绕包覆有绝热层，图中未画出，绝热层由玻纤隔热纸和铝箔反射屏组成，铝箔反射屏位于玻纤隔热纸的外侧。缠绕包覆绝热层是为了减少管壁热辐射带来的漏热。In this embodiment, the inside and outside of the inner tube 2, the outer tube 1, and their connecting parts are wrapped with a heat insulating layer, not shown in the figure, and the heat insulating layer is composed of glass fiber heat insulating paper and an aluminum foil reflective screen. The aluminum foil reflective screen is located on the outside of the glass fiber insulation paper. The purpose of wrapping the insulation layer is to reduce the heat leakage caused by the heat radiation of the pipe wall.
如图2所示，在实际应用中，内管2内端和外管1内端之间的连接结构还可以为：在内管2和外管1之间设置有一根套装于内管2外侧的异形管9，异形管9与内、外管2、1相间隔布置，异形管9纵截面上的管壁呈内外往返弯折的蛇形走向布置，内管2和外管1内端分别与异形管9的管壁一端相连接固定。异形管9的异形结构能使导热路径进一步延长，但是采用异形管9的异形绝热支撑结构不易制造，并且异形绝热支撑结构的支撑强度也很难保证，但是如果在能保证支撑强度和易制造的前提下，采用上述异形管9的异形绝热支撑结构能使导热路径进一步增加，从而能使内筒体中的低温液体更不容易蒸发。As shown in Fig. 2, in practical application, the connection structure between the inner end of the inner tube 2 and the inner end of the outer tube 1 can also be: between the inner tube 2 and the outer tube 1 there is a special-shaped pipe 9, the special-shaped pipe 9 is arranged at intervals with the inner and outer pipes 2 and 1, and the pipe wall on the longitudinal section of the special-shaped pipe 9 is arranged in a serpentine direction bent back and forth inside and outside, and the inner ends of the inner pipe 2 and the outer pipe 1 are respectively It is connected and fixed with one end of the tube wall of the special-shaped tube 9 . The special-shaped structure of the special-shaped tube 9 can further extend the heat conduction path, but the special-shaped heat-insulating support structure using the special-shaped pipe 9 is not easy to manufacture, and the support strength of the special-shaped heat-insulation support structure is also difficult to guarantee, but if the support strength can be guaranteed and it is easy to manufacture On the premise, adopting the special-shaped heat-insulating support structure of the above-mentioned special-shaped tube 9 can further increase the heat conduction path, so that the low-temperature liquid in the inner cylinder is less likely to evaporate.
Claims (10)
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Application publication date: 20191213 |