CN115978434A - Turbulent flow cold shield structure of ultralow temperature storage and transportation device - Google Patents
Turbulent flow cold shield structure of ultralow temperature storage and transportation device Download PDFInfo
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- CN115978434A CN115978434A CN202211556563.XA CN202211556563A CN115978434A CN 115978434 A CN115978434 A CN 115978434A CN 202211556563 A CN202211556563 A CN 202211556563A CN 115978434 A CN115978434 A CN 115978434A
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- 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
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- 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
Abstract
The invention provides a turbulent flow cold screen structure of an ultralow temperature storage and transportation device, which comprises a cold screen supporting frame, a turbulent flow pipe, a heat-insulating radiation metal cold screen, a multilayer reflection heat-insulating winding material layer, a cold screen heat-insulating support and a turbulent flow pipe medium switching device. The invention solves the problem of high use cost of the ultralow temperature storage and transportation device caused by heat leakage, has simple structure, reasonable design, convenient manufacture and construction, greatly shortens the construction period of structural integrity, can be widely used on small, medium, large and even oversize type deep cooling ultralow temperature storage and transportation devices, further reduces the radiation heat leakage by more than 95 percent on the basis, provides the turbulent flow cold shield cold energy by the low-temperature gas in the inner tank, and effectively and thoroughly solves the problem of long-time low-cost storage and transportation of ultralow-temperature liquid such as liquid hydrogen, liquid helium and the like.
Description
Technical Field
The invention belongs to the technical field of ultralow temperature storage and transportation devices, and particularly relates to a turbulent flow cold shield structure of an ultralow temperature storage and transportation device.
Background
With the development of current science and technology, cryogenic technologies such as ultra-low temperature liquid storage and transportation are widely applied, such as LNG, liquid oxygen, liquid nitrogen, liquid hydrogen, liquid helium and the like, the novel storage mode of liquid hydrogen and liquid helium has appeared in common markets, particularly, liquid hydrogen and liquid helium are difficult to store, the liquefaction point is extremely low and close to absolute zero, as liquid helium is expensive, hydrogen is extremely flammable and explosive, the vaporization latent heat of the liquid helium and the hydrogen is lower than that of liquid nitrogen, liquid oxygen and the like, the gas-liquid volume ratio is nearly 700 times or more, heat leakage means that the storage and transportation cost is increased, the requirement on heat leakage of the device is extremely high, and as is well known, heat transfer is mainly in three forms, namely: solid heat conduction, convection heat exchange and radiation heat leakage are directly adopted, and a heat insulation and preservation mode of winding a high-vacuum multilayer reflection heat insulation material is adopted, so that the convection heat exchange heat leakage is avoided and the radiation heat leakage is greatly reduced.
In addition, the Chinese patent publication No. CN217356472U is a novel turbulence pipe cold shield of a cryogenic container, and the invention provides a novel turbulence pipe cold shield of a cryogenic container, which comprises a cold shield structure, a heat turbulence pipe body, a heat conduction filler, a turbulence pipe inner cavity and a cryogenic container tank body, wherein the cold shield structure is connected to the middle position of the outer surface of the cryogenic container tank body through bolts; the heat turbulence pipe body is wound on the outer surface of the cold shield structure and is in screw connection with the cold shield structure. However, the heat insulation and cold insulation effects of the ultra-low temperature liquid, such as liquid hydrogen and liquid helium, are not particularly ideal, heat leakage cannot be greatly reduced obviously, and long-term low-cost storage and transportation of the liquid hydrogen and liquid helium are not facilitated.
Therefore, the invention is very necessary to provide a turbulent flow cold shield structure of the ultra-low temperature storage and transportation device.
Disclosure of Invention
In order to solve the technical problems, the invention provides a turbulent flow cold screen structure of an ultralow temperature storage and transportation device, which solves the problem of high use cost of the ultralow temperature storage and transportation device caused by heat leakage, has the advantages of simple structure, reasonable design, convenient manufacture and construction, greatly shortened construction and construction period due to structural integrity, wide application on small, medium, large and even oversize type cryogenic ultralow temperature storage and transportation devices, and capability of adding a low temperature cold screen on the basis of a heat insulation and preservation mode of winding a high vacuum multilayer heat insulation material, further reducing the radiation heat leakage by more than 95 percent on the basis, providing the cold energy of the turbulent flow cold screen by low temperature gas in an inner tank, and effectively and thoroughly solving the problems of long-time low-cost storage and transportation of ultralow temperature liquid such as liquid hydrogen, liquid helium and the like.
A turbulent flow cold screen structure of an ultralow temperature storage and transportation device comprises a cold screen supporting frame, a turbulent flow pipe, a heat-insulation radiation metal cold screen, a multilayer reflection heat-insulation winding material layer, a cold screen heat-insulation support and a turbulent flow pipe medium switching device.
In addition, the ultralow temperature storage and transportation device applied to the turbulent flow cold screen structure of the ultralow temperature storage and transportation device comprises an inner tank and an outer tank, wherein the turbulent flow cold screen structure of the ultralow temperature storage and transportation device is arranged in an interlayer space formed between the inner tank and the outer tank and is fixedly installed through a cold screen heat insulation support.
The cold shield support frame is fixedly connected with the outer tank (8) through a cold shield heat insulation support; the turbulent flow pipe is wound and wrapped on one side of the heat-insulating radiation metal cold shield, and the turbulent flow pipe and the heat-insulating radiation metal cold shield are fixed on the cold shield supporting frame; the multilayer reflection heat insulation winding material layer wraps one side of the cold screen supporting frame, and a composite structure formed by winding the heat insulation radiation metal cold screen, the turbulent flow pipe and the multilayer reflection heat insulation winding material layer wraps one side of the inner tank; the spoiler tube medium switching device is arranged in an interlayer space formed between the inner tank and the outer tank.
Preferably, the outer wall of the turbulence pipe is tightly attached to the heat-insulating radiation metal cold screen, and the turbulence pipe and the heat-insulating radiation metal cold screen are fixed on the cold screen supporting frame, so that the cold screen supporting frame, the turbulence pipe and the heat-insulating radiation metal cold screen form a whole with a rigid structure.
Preferably, the multilayer reflective insulation winding material layer covers and the cold screen insulation support fixes the cold screen support frame, the spoiler and the support of the heat insulation radiation metal cold screen, and the type of the low-temperature medium in the spoiler can be switched through the spoiler medium switching device.
Preferably, the cold screen support frame, the turbulent flow pipe and the heat-insulation radiation metal cold screen are made of different materials, the thermal expansion coefficients of the cold screen support frame, the turbulent flow pipe and the heat-insulation radiation metal cold screen are different greatly, the turbulent flow pipe and the heat-insulation radiation metal cold screen are attached more tightly when the temperature is lower, and the cold energy of the turbulent flow pipe is fully transmitted to the heat-insulation radiation metal cold screen to maintain the low temperature of the heat-insulation radiation metal cold screen.
Preferably, the cold shield support frame adopts a stainless steel plate frame in a cross shape.
Preferably, the turbulent flow tube medium switching device and the turbulent flow tube are communicated in a three-way reversing mode.
Preferably, the spoiler tube medium switching device is communicated with the stored evaporated gas in the inner tank or the low-temperature medium from the outside.
Preferably, cold shield braced frame, turbulent flow pipe, adiabatic radiation metal cold shield and multilayer reflection adiabatic winding material layer complex winding parcel are connected fixedly with the outer jar through cold shield adiabatic support in one side of inner tank, and the inner tank between cold shield braced frame is provided with pipeline one end anchor, and the other end slidable is used as the center to allow the cold shield structure of vortex to use the anchor point to carry out free expansion and contraction under low temperature environment.
Preferably, the cold shield heat insulation support can also be arranged at the other side of the cold shield support frame and fixedly connected with the inner tank.
Preferably, the turbulence pipes can be arranged in an axial pipe array structure, a spiral winding structure or a cross spiral structure, and can also be arranged in various combined structure forms formed by the axial pipe array structure, the spiral winding structure and the cross spiral structure.
Compared with the prior art, the invention has the following beneficial effects:
the device can be used for heat insulation and cold insulation of storage and transportation of liquid hydrogen and liquid helium, liquefied natural gas LNG, liquid oxygen, liquid nitrogen, liquid neon, liquid xenon and other ultralow temperature liquids; it is also suitable for storing other liquid and dangerous chemicals; the problem of high use cost of the ultralow temperature storage and transportation device caused by heat leakage is solved, the ultralow temperature storage and transportation device is simple in structure, reasonable in design and convenient to manufacture and construct, the structural integrity greatly shortens the construction period, the ultralow temperature storage and transportation device can be widely used on small, medium, large and even super-large type cryogenic ultralow temperature storage and transportation devices, the low temperature cold shield can be added on the basis of a heat insulation mode of winding a high vacuum multilayer heat insulation material, the radiation heat leakage is further reduced by more than 95% on the basis, the turbulent flow cold shield cold quantity can be provided by the low temperature gas in the inner tank, and the problem of long-time low-cost storage and transportation of ultralow temperature liquid such as liquid hydrogen, liquid helium and the like is effectively and thoroughly solved;
through a cold screen structure of ultralow temperature storage and transportation device vortex for the temperature difference significantly reduces between inner tank and the cold screen, thereby reduces inner tank radiation heat leakage to very little, also makes inner tank solid heat conduction heat leakage also reduce simultaneously, prevents further heat leakage, reaches the loss effect that reduces the ultralow temperature, and it is long when increasing ultralow temperature storage and transportation effect and storage and transportation. The turbulent flow cold screen is formed into a whole, so that the turbulent flow cold screen is safer and more reliable, the construction progress is fast, the construction period is shortened for medium and large storage and transportation equipment, the engineering cost is low, and the turbulent flow cold screen can be used in various scenes, so that the ultralow temperature liquid can be safer and widely applied in a large scale.
Drawings
FIG. 1 is a schematic view of the structure of the bypass cold shield of the present invention.
FIG. 2 is an assembly view of the bypass cold shield structure of the present invention applied to an ultra-low temperature storage and transportation apparatus.
Fig. 3 is an assembly view of another form of the bypass cold shield structure of the present invention in a stationary form for use in an ultra-low temperature storage and transportation apparatus.
Fig. 4 is a schematic view of the arrangement 1 of the flow tube of the invention.
Fig. 5 is a schematic view of the inventive flow-around tube arrangement 2.
Fig. 6 is a schematic 3 of the inventive flow-around tube arrangement.
Fig. 7 is a cross-sectional view of the arrangement of the bypass tube of the present invention.
In the figure:
1. a cold shield support frame; 2. a turbulent flow tube; 3. a heat-insulating radiation metal cold shield; 4. a plurality of layers of reflective insulating winding material; 5. the cold shield is supported in a heat insulation way; 6. a turbulent tube medium switching device; 7. an inner tank; 8. an outer tank; 9. the turbulent flow cold shield structure of the ultra-low temperature storage and transportation device.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the embodiment is as follows:
as shown in the attached drawings 1 to 7, the invention provides a turbulent flow cold shield structure of an ultralow temperature storage and transportation device, which comprises a cold shield support frame 1, a turbulent flow pipe 2, a heat-insulating radiation metal cold shield 3, a multilayer reflection heat-insulating winding material layer 4, a cold shield heat-insulating support 5, a turbulent flow pipe medium switching device 6, an inner tank 7 and an outer tank 8, wherein the turbulent flow cold shield structure is arranged in an interlayer space formed between the inner tank 7 and the outer tank 8 and is fixedly installed through the cold shield heat-insulating support 5;
the cold shield supporting frame 1 is fixedly connected with the outer tank 8 through the cold shield heat insulation support 5; the turbulent flow tube 2 is wound and wrapped on one side of the heat-insulating radiation metal cold shield 3, and the turbulent flow tube 2 and the heat-insulating radiation metal cold shield 3 are fixed on the cold shield supporting frame 1; the multilayer reflective insulation winding material layer 4 is wrapped on one side of the cold screen supporting frame 1, and a composite structure formed by winding the heat insulation radiation metal cold screen 3, the turbulence pipe 2 and the multilayer reflective insulation winding material layer 4 is wrapped on one side of the inner tank 7; and the turbulent flow tube medium switching device 6 is arranged in an interlayer space formed between the inner tank 7 and the outer tank 8.
In the above embodiment, specifically, the outer wall of the turbulent flow tube 2 is tightly attached to the heat-insulating radiation metal cold shield 3, and the two are fixed on the cold shield support frame 1, so that the cold shield support frame 1, the turbulent flow tube 2 and the heat-insulating radiation metal cold shield 3 form a whole with a rigid structure.
In the above embodiment, specifically, after the multi-layer reflective insulation winding material layer 4 covers the cold shield support frame 1 fixed with the cold shield insulation support 5, the spoiler tube 2 and the heat insulation radiation metal cold shield 3, the type of the low-temperature medium in the spoiler tube can be switched by the spoiler tube medium switching device 6.
In the above embodiment, specifically, the cold shield support frame 1, the spoiler tube 2, and the adiabatic radiation metal cold shield 3 three respectively adopt different materials, and the thermal expansion coefficient difference is larger, and the spoiler tube 2 and the adiabatic radiation metal cold shield 3 are attached more closely when the temperature is lower, thereby fully ensuring that the cold energy of the spoiler tube 2 is transferred to the adiabatic radiation metal cold shield 3 to maintain the low temperature.
In the above embodiment, specifically, the cold shield support frame 1 is a cross-shaped stainless steel plate frame; the medium switching device 6 of the turbulent flow tube is communicated with the turbulent flow tube 2 in a three-way reversing way; switching between the boil-off gas of the inner tank 7 or the external cryogenic medium of the outer tank 8 is achieved.
In the above embodiment, specifically, after the cold shield supporting frame 1, the spoiler tube 2, the heat-insulating radiation metal cold shield 3 and the multilayer reflection heat-insulating winding material layer 4 are compositely wound, one end of the cold shield heat-insulating support 5 fixed on the outer tank 8 is anchored between the cold shield supporting frame 1, and the other end is slidable.
In the above embodiment, the specific cold shield heat insulation support 5 may also be disposed on the other side of the cold shield support frame 1 and fixedly connected to the inner tank 7.
In the above embodiment, specifically, the turbulent flow tubes 2 may be arranged in an axial tube array structure 21, a spiral winding structure 22, and a cross spiral structure 23, and may also be arranged in various combination structures formed by the axial tube array structure 21, the spiral winding structure 22, and the cross spiral structure 23.
Principle of operation
When the invention is used, the outer wall of the turbulence pipe 2 is tightly attached to the heat-insulating radiation metal cold shield 3, and the turbulence pipe 2 and the heat-insulating radiation metal cold shield 3 are fixed on the cold shield supporting frame 1, so that the cold shield supporting frame 1, the turbulence pipe 2 and the heat-insulating radiation metal cold shield 3 form a whole with a rigid structure; the integral rigid structure is conveniently coated by the multilayer reflective heat-insulation winding material layers 4 and fixed by the cold screen heat-insulation support 5, the type of low-temperature media in the turbulence pipe can be switched by the turbulence pipe media switching device 6 so as to be respectively suitable for two forms of external liquid nitrogen circulation or self-evaporation gas, and the two forms are adopted to provide cold energy for the turbulence cold screen so as to maintain the ultralow temperature of the turbulence cold screen; cold shield braced frame 1, vortex pipe 2, the cold shield of adiabatic radiation metal 3 three adopts its thermal expansion coefficient of different materials to differ greatly respectively, it is inseparabler to laminate between vortex pipe 2 and the cold shield of adiabatic radiation metal 3 the two when the temperature is lower more, fully guarantee that 2 cold volumes of vortex pipe transmit to the cold shield of adiabatic radiation metal 3 and maintain its low temperature, reduce the difference in temperature between inner tank and the cold shield of vortex by a wide margin, in order to reach and make the heat radiation heat leakage amount very little, further improve adiabatic cold insulation effect.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A turbulent flow cold screen structure of an ultralow temperature storage and transportation device is characterized in that the turbulent flow cold screen structure (100) of the ultralow temperature storage and transportation device comprises a cold screen supporting frame (1), a turbulent flow tube (2), a heat insulation radiation metal cold screen (3), a multilayer reflection heat insulation winding material layer (4), a cold screen heat insulation support (5) and a turbulent flow tube medium switching device (6),
in addition, the ultralow temperature storage and transportation device applied to the turbulent flow cold screen structure (100) of the ultralow temperature storage and transportation device comprises an inner tank (7) and an outer tank (8), wherein the turbulent flow cold screen structure (100) of the ultralow temperature storage and transportation device is arranged in an interlayer space formed between the inner tank (7) and the outer tank (8) and is fixedly installed through a cold screen heat insulation support (5);
the cold shield supporting frame (1) is fixedly connected with the outer tank (8) through a cold shield heat insulation support (5); the turbulent flow tube (2) is wound and wrapped on one side of the heat-insulating radiation metal cold shield (3), and the turbulent flow tube (2) and the heat-insulating radiation metal cold shield (3) are fixed on the cold shield supporting frame (1); the multilayer reflective insulation winding material layer (4) wraps one side of the cold screen supporting frame (1), and a composite structure formed by winding the insulation radiation metal cold screen (3), the turbulence pipe (2) and the multilayer reflective insulation winding material layer (4) wraps one side of the inner tank (7); and the spoiler tube medium switching device (6) is arranged in an interlayer space formed between the inner tank (7) and the outer tank (8).
2. The turbulent flow cold shield structure (100) of ultra-low temperature storage and transportation device of claim 1, wherein the outer wall of the turbulent flow tube (2) is closely attached to the heat-insulating radiation metal cold shield (3) and fixed on the cold shield support frame (1), so that the cold shield support frame (1), the turbulent flow tube (2) and the heat-insulating radiation metal cold shield (3) form a rigid integral body.
3. The turbulent flow cold shield structure (100) for ultra-low temperature storage and transportation device in claim 1, wherein the multi-layer reflective insulation winding material layer (4) covers the cold shield support frame (1) fixed with the cold shield insulation support (5), the turbulent flow tube (2) and the heat insulation radiation metal cold shield (3), and then the type of the low temperature medium in the turbulent flow tube can be switched by the turbulent flow tube medium switching device (6).
4. The turbulent flow cold shield structure (100) of the ultra-low temperature storage and transportation device of claim 1, wherein the cold shield support frame (1), the turbulent flow tube (2) and the heat-insulating radiation metal cold shield (3) are made of different materials, and have different thermal expansion coefficients, and the turbulent flow tube (2) and the heat-insulating radiation metal cold shield (3) are attached more tightly when the temperature is lower, thereby fully ensuring that the cold energy of the turbulent flow tube (2) is transferred to the heat-insulating radiation metal cold shield (3) to maintain the low temperature.
5. The turbulated cold shield structure (100) for an ultra-low temperature storage and transportation device of claim 1, wherein said cold shield support frame (1) is in the form of a cross-shaped metallic or non-metallic plate rack structure.
6. The cold flow shield structure (100) for an ultra-low temperature storage and transportation device, as recited in claim 1, wherein said turbulator medium switching device (6) and said turbulator (2) are in three-way reversing communication.
7. The cold flow shield structure (100) for ultra-low temperature storage and transportation device as claimed in claim 1, wherein the tube medium switching device (6) is connected to the stored boil-off gas in the inner tank (7) or the low temperature medium from the outside.
8. The turbulent flow cold shield structure (100) of ultra-low temperature storage and transportation device of claim 1, wherein the cold shield support frame (1), the turbulent flow tubes (2), the heat-insulating radiation metal cold shield (3) and the multi-layer reflective heat-insulating winding material layer (4) are wrapped on one side of the inner tank (7) in a composite winding manner, and are fixedly connected with the outer tank (8) through the cold shield heat-insulating support (5), the inner tank (7) between the cold shield support frame (1) is provided with a pipeline with one end anchored and the other end slidable, so as to allow the turbulent flow cold shield structure (100) to freely expand and contract by taking the anchored point as the center in the low temperature environment.
9. The turbulent cold screen structure (100) of ultra-low temperature storage and transportation device of claim 1, wherein the cold screen heat insulation support (5) is also disposed at the other side of the cold screen support frame (1) and is fixedly connected to the inner tank (7).
10. The turbulator cold shield structure (100) of ultra-low temperature storage and transportation device of claim 1, wherein the turbulators (2) can be arranged in axial tube array structure (21), spiral wound structure (22), cross spiral structure (23), or in various combinations of axial tube array structure (21), spiral wound structure (22) and cross spiral structure (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211556563.XA CN115978434A (en) | 2022-12-06 | 2022-12-06 | Turbulent flow cold shield structure of ultralow temperature storage and transportation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211556563.XA CN115978434A (en) | 2022-12-06 | 2022-12-06 | Turbulent flow cold shield structure of ultralow temperature storage and transportation device |
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| Publication Number | Publication Date |
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| CN115978434A true CN115978434A (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211556563.XA Pending CN115978434A (en) | 2022-12-06 | 2022-12-06 | Turbulent flow cold shield structure of ultralow temperature storage and transportation device |
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| CN (1) | CN115978434A (en) |
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2022
- 2022-12-06 CN CN202211556563.XA patent/CN115978434A/en active Pending
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