A spoiler cold shield structure for ultra-low temperature storage and transportation equipment

Abstract

The present invention provides a spoiler cold shield structure for ultra-low temperature storage and transportation device, comprising a cold shield support frame, a spoiler pipe, an insulated radiation metal cold shield, a multi-layer reflective insulation winding material layer, a cold shield insulation support and a spoiler pipe medium switching device. In addition, the ultra-low temperature storage and transportation device to which the spoiler cold shield structure for ultra-low temperature storage and transportation device is applied comprises an inner tank and an outer tank, and a support bar is arranged between the inner tank and the outer tank. The present invention solves the problem of high use cost of ultra-low temperature storage and transportation device caused by heat leakage, has a simple structure, reasonable design, convenient manufacture and construction, and the structural integrity greatly shortens the construction period. It can be widely used in small, medium, large and even extra-large deep-cold ultra-low temperature storage and transportation devices, so that the radiation heat leakage is further reduced by more than 95% on the basis of the above, and the cold capacity of the spoiler cold shield can be provided by the low-temperature gas in the inner tank, which effectively and thoroughly solves the long-term low-cost storage and transportation of ultra-low temperature liquids such as liquid hydrogen and liquid helium.

Description

Technical Field

[0001] The invention belongs to the technical field of ultra-low temperature storage and transportation equipment, and in particular relates to a spoiler cold shield structure of an ultra-low temperature storage and transportation equipment. Background Art

[0002] With the current development of science and technology, cryogenic technologies such as ultra-low temperature liquid storage and transportation are widely used, such as LNG, liquid oxygen, liquid nitrogen, liquid hydrogen, liquid helium, etc. Liquid hydrogen and liquid helium, a new storage mode, have appeared in the common market. In particular, liquid hydrogen and liquid helium are difficult to store, and the liquefaction point is extremely low and close to absolute zero. Due to the high price of liquid helium and the extremely flammable and explosive hydrogen, the latent heat of vaporization of the two is lower than that of liquid nitrogen and liquid oxygen, and the gas-liquid volume ratio is nearly 700 times or more. Heat leakage means increased storage and transportation costs, so the heat leakage requirements of the device are extremely high. As we all know, heat transfer mainly has three forms, namely: solid heat conduction, convection heat exchange, and radiation heat leakage. Although the insulation method of directly using high-vacuum multi-layer reflective insulation material to wrap around can eliminate convection exchange heat leakage and greatly reduce radiation heat leakage.

[0003] In addition, the Chinese patent announcement number is CN217356472U, and the invention is called a new type of spoiler tube cold shield for cryogenic containers, including a cold shield structure, a heat spoiler tube body, a heat conductive filler, a spoiler tube cavity and a cryogenic container body, wherein the cold shield structure is bolted to the middle position of the outer surface of the cryogenic container body; the heat spoiler tube body is wound around the outer surface of the cold shield structure and is screwed to the cold shield structure. However, for ultra-low temperature liquids such as liquid hydrogen and liquid helium, the insulation and cold preservation effect is not particularly ideal, and the heat leakage cannot be significantly reduced, which is not conducive to the long-term and low-cost storage and transportation of liquid hydrogen and liquid helium.

[0004] In view of this, it is very necessary to invent a spoiler cold shield structure for ultra-low temperature storage and transportation equipment. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a spoiler cold screen structure for an ultra-low temperature storage and transportation device, which solves the problem of high use cost of the ultra-low temperature storage and transportation device caused by heat leakage. The structure is simple, the design is reasonable, the manufacture and construction are convenient, and the structural integrity greatly shortens the construction period. The structure can be widely used in small, medium, large and even extra-large deep-cold and ultra-low temperature storage and transportation devices. A low-temperature cold screen can be added on the basis of the thermal insulation method of winding high-vacuum multi-layer insulation materials, so that the radiation heat leakage is further reduced by more than 95% on the above basis. The cooling capacity of the spoiler cold screen can be provided by the low-temperature gas in the inner tank, which effectively and thoroughly solves the long-term and low-cost storage and transportation of ultra-low temperature liquids such as liquid hydrogen and liquid helium.

[0006] A spoiler cold screen structure for ultra-low temperature storage and transportation equipment comprises a cold screen support frame, a spoiler pipe, an insulating radiation metal cold screen, a multi-layer reflective insulating winding material layer, a cold screen insulating support and a spoiler pipe medium switching device.

[0007] In addition, the ultra-low temperature storage and transportation device to which the spoiler cold shield structure is applied includes an inner tank and an outer tank. The spoiler cold shield structure of the low temperature storage and transportation device is arranged in the interlayer space formed between the inner tank and the outer tank, and is installed and fixed by the cold shield insulation support.

[0008] The cold screen support frame is connected and fixed to the outer tank (8) through the cold screen insulation support; the spoiler pipe is wrapped around one side of the insulation radiation metal cold screen, and the spoiler pipe and the insulation radiation metal cold screen are fixed on the cold screen support frame; the multi-layer reflective insulation wrapping material layer is wrapped around one side of the cold screen support frame, and the composite structure formed by the insulation radiation metal cold screen, the spoiler pipe and the multi-layer reflective insulation wrapping material layer is wrapped around one side of the inner tank; the spoiler pipe medium switching device is arranged in the interlayer space formed between the inner tank and the outer tank.

[0009] Preferably, the outer wall of the spoiler tube is tightly fitted with the thermal insulation radiation metal cold screen, and the two are fixed on the cold screen support frame, so that the cold screen support frame, the spoiler tube and the thermal insulation radiation metal cold screen form a whole with a rigid structure.

[0010] Preferably, the multi-layer reflective insulation wrapping material layer coating and the cold screen insulation support fixing cold screen support frame, spoiler tube and insulation radiation metal cold screen support can switch the type of low-temperature medium in the spoiler tube through the spoiler tube medium switching device.

[0011] Preferably, the cold screen support frame, the spoiler tube, and the insulated radiation metal cold screen are made of different materials with greatly different thermal expansion coefficients. When the temperature is lower, the fit between the spoiler tube and the insulated radiation metal cold screen is tighter, which fully ensures that the cold energy of the spoiler tube is transferred to the insulated radiation metal cold screen to maintain its low temperature.

[0012] Preferably, the cold screen support frame is a cross-shaped stainless steel plate frame.

[0013] Preferably, the spoiler tube medium switching device and the spoiler tube are connected by a three-way switching connection.

[0014] Preferably, the medium switching device of the spoiler tube is connected to the stored evaporated gas in the inner tank or the low-temperature medium from the outside.

[0015] Preferably, the cold screen support frame, spoiler tube, insulating radiation metal cold screen and multi-layer reflective insulation winding material layer are compositely wrapped around one side of the inner tank and connected and fixed to the outer tank through the cold screen insulation support. The inner tank between the cold screen support frames is provided with a pipeline with one end anchored and the other end slidable, so as to allow the spoiler cold screen structure to expand and contract freely with the anchor point as the center in a low temperature environment.

[0016] Preferably, the cold shield insulation support may also be arranged on the other side of the cold shield support frame and fixedly connected to the inner tank.

[0017] Preferably, the spoiler tubes may be arranged in an axial tube array structure, a spiral winding structure, or a cross-coil structure, or may be arranged in various combined structural forms formed by the axial tube array structure, the spiral winding structure, and the cross-coil structure.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The device can be used not only for liquid hydrogen and liquid helium, but also for thermal insulation and cold preservation of ultra-low temperature liquid storage and transportation such as liquefied natural gas LNG, liquid oxygen, liquid nitrogen, liquid neon, liquid xenon, etc.; it can also be used for the storage of other liquids and hazardous chemicals; it solves the problem of high use cost of ultra-low temperature storage and transportation equipment caused by heat leakage, has a simple structure, reasonable design, convenient manufacture and construction, and the integrity of the structure greatly shortens the construction period. It can be widely used in small, medium, large and even extra-large deep-cold ultra-low temperature storage and transportation equipment, and can add a low-temperature cold screen on the basis of the thermal insulation method of high-vacuum multi-layer insulation material winding, so that the radiation heat leakage is further reduced by more than 95% on the basis of the above. The cooling capacity of the turbulent cold screen can be provided by the low-temperature gas in the inner tank, which effectively and thoroughly solves the long-term low-cost storage and transportation of ultra-low temperature liquids such as liquid hydrogen and liquid helium;

[0020] Through a spoiler cold screen structure of ultra-low temperature storage and transportation equipment, the temperature difference between the inner tank and the cold screen is greatly reduced, thereby reducing the radiation heat leakage of the inner tank to a negligible level, and also reducing the solid heat conduction heat leakage of the inner tank, to further prevent heat leakage, achieve the effect of reducing ultra-low temperature losses, and increase the ultra-low temperature storage and transportation effect and storage and transportation time. The spoiler cold screen is formed into a whole to make it safer and more reliable. For medium and large storage and transportation equipment, the construction progress is fast, the construction period is shortened, the engineering cost is low, and it can be used in various scenarios, making ultra-low temperature liquids safer and widely used on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the flow-around cold shield structure of the present invention.

[0022] Figure 2 It is an assembly drawing of the flow-around cold shield structure of the present invention applied to an ultra-low temperature storage and transportation device.

[0023] Figure 3 This is an assembly diagram of another fixed form of the flow-around cold shield structure of the present invention applied to an ultra-low temperature storage and transportation device.

[0024] Figure 4 This is the arrangement form 1 of the flow bypass pipes of the present invention.

[0025] Figure 5 This is the arrangement form 2 of the flow bypass pipes of the present invention.

[0026] Figure 6 This is the arrangement form 3 of the flow bypass pipes of the present invention.

[0027] Figure 7 It is a cross-sectional view of the arrangement of the bypass pipe of the present invention.

[0028] In the figure:

[0029] 1. Cold screen support frame; 2. Spoiler pipe; 3. Insulation radiation metal cold screen; 4. Multi-layer reflective insulation winding material layer; 5. Cold screen insulation support; 6. Spoiler pipe medium switching device; 7. Inner tank; 8. Outer tank; 9. Spoiler cold screen structure of ultra-low temperature storage and transportation device. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings:

[0031] Example:

[0032] As attached Figure 1 To Attachment Figure 7 As shown, the present invention provides a spoiler cold shield structure of an ultra-low temperature storage and transportation device, comprising a cold shield support frame 1, a spoiler pipe 2, an insulating radiation metal cold shield 3, a multi-layer reflective insulation winding material layer 4, a cold shield insulation support 5, a spoiler pipe medium switching device 6, an inner tank 7 and an outer tank 8, the spoiler cold shield structure is arranged in the interlayer space formed between the inner tank 7 and the outer tank 8, and is installed and fixed by the cold shield insulation support 5;

[0033] The cold screen support frame 1 is connected and fixed to the outer tank 8 through the cold screen insulation support 5; the spoiler tube 2 is wrapped around one side of the insulating radiation metal cold screen 3, and the spoiler tube 2 and the insulating radiation metal cold screen 3 are fixed on the cold screen support frame 1; the multi-layer reflective insulation wrapping material layer 4 is wrapped around one side of the cold screen support frame 1, and the composite structure formed by the insulating radiation metal cold screen 3, the spoiler tube 2 and the multi-layer reflective insulation wrapping material layer 4 is wrapped around one side of the inner tank 7; the spoiler tube medium switching device 6 is arranged in the interlayer space formed between the inner tank 7 and the outer tank 8.

[0034] In the above implementation scheme, specifically, the outer wall of the spoiler tube 2 is tightly fitted with the insulating radiation metal cold screen 3, and the two are fixed on the cold screen support frame 1, so that the cold screen support frame 1, the spoiler tube 2, and the insulating radiation metal cold screen 3 form a whole with a rigid structure.

[0035] In the above-mentioned implementation scheme, specifically, after the multi-layer reflective insulation wrapping material layer 4 covers the cold screen support frame 1, the spoiler tube 2 and the insulating radiation metal cold screen 3 fixed with the cold screen insulation support 5, the type of low-temperature medium in the spoiler tube can be switched through the spoiler tube medium switching device 6.

[0036] In the above implementation scheme, specifically, the cold screen support frame 1, the spoiler tube 2, and the insulating radiation metal cold screen 3 are made of different materials with greatly different thermal expansion coefficients. When the temperature is lower, the spoiler tube 2 and the insulating radiation metal cold screen 3 fit more tightly, which fully ensures that the cold energy of the spoiler tube 2 is transferred to the insulating radiation metal cold screen 3 to maintain its low temperature.

[0037] In the above implementation scheme, specifically, the cold screen support frame 1 adopts a stainless steel plate frame in the shape of a "cross"; the spoiler tube medium switching device 6 and the spoiler tube 2 are connected by a three-way switching connection; switching between the evaporating gas of the inner tank 7 or the external low-temperature medium of the outer tank 8 is realized.

[0038] In the above implementation scheme, specifically, the cold screen support frame 1, spoiler tube 2, insulating radiation metal cold screen 3 and multi-layer reflective insulation winding material layer 4 are compositely wound, and one end of the cold screen insulation support 5 fixed on the outer tank 8 is anchored between the cold screen support frame 1, and the other end can slide.

[0039] In the above embodiment, the specific cold shield insulation support 5 can also be arranged on the other side of the cold shield support frame 1 and fixedly connected to the inner tank 7 .

[0040] In the above implementation scheme, specifically, the spoiler tube 2 can be arranged into an axial tube structure 21, a spiral winding structure 22, a cross-winding structure 23, or can be arranged into various combined structural forms formed by the axial tube structure 21, the spiral winding structure 22, and the cross-winding structure 23.

[0041] How it works

[0042] When the present invention is in use, the outer wall of the spoiler tube 2 is tightly fitted with the heat-insulating radiation metal cold screen 3, and the two are fixed on the cold screen support frame 1, so that the cold screen support frame 1, the spoiler tube 2, and the heat-insulating radiation metal cold screen 3 form a whole with a rigid structure; so that the multi-layer reflective insulation wrapping material layer 4 is coated and the cold screen insulation support 5 fixes the overall rigid structure, and the type of low-temperature medium in the spoiler tube can be switched through the spoiler tube medium switching device 6 to adapt to the two forms of external liquid nitrogen circulation or self-evaporating gas, respectively. Two forms are used to provide cooling for the spoiler cold screen to maintain its ultra-low temperature; the cold screen support frame 1, the spoiler tube 2, and the insulated radiation metal cold screen 3 are made of different materials with greatly different thermal expansion coefficients. The lower the temperature, the tighter the fit between the spoiler tube 2 and the insulated radiation metal cold screen 3, which fully ensures that the cooling energy of the spoiler tube 2 is transferred to the insulated radiation metal cold screen 3 to maintain its low temperature, and greatly reduces the temperature difference between the inner tank and the spoiler cold screen, so as to make the thermal radiation heat leakage negligible, further improving the thermal insulation and cooling effect.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spoiler cold shield structure for ultra-low temperature storage and transportation equipment, It is characterized in that The ultra-low temperature storage and transportation device spoiler cold shield structure (100) comprises a cold shield support frame (1), a spoiler pipe (2), an insulating radiation metal cold shield (3), a multi-layer reflective insulation winding material layer (4), a cold shield insulation support (5) and a spoiler pipe medium switching device (6); in addition, the ultra-low temperature storage and transportation device to which the ultra-low temperature storage and transportation device spoiler cold shield structure (100) is applied comprises an inner tank (7) and an outer tank (8); the ultra-low temperature storage and transportation device spoiler cold shield structure (100) is arranged in an interlayer space formed between the inner tank (7) and the outer tank (8), and is installed and fixed by the cold shield insulation support (5); The cold screen support frame (1) is connected and fixed to the outer tank (8) through the cold screen insulation support (5); the spoiler pipe (2) is wrapped around one side of the heat-insulating radiation metal cold screen (3), and the spoiler pipe (2) and the heat-insulating radiation metal cold screen (3) are fixed on the cold screen support frame (1); the multi-layer reflective insulation wrapping material layer (4) is wrapped around one side of the cold screen support frame (1), and the composite structure formed by the heat-insulating radiation metal cold screen (3), the spoiler pipe (2) and the multi-layer reflective insulation wrapping material layer (4) is wrapped around one side of the inner tank (7); the medium cut of the spoiler pipe The heat exchange device (6) is arranged in the interlayer space formed between the inner tank (7) and the outer tank (8); the outer wall of the spoiler tube (2) is tightly fitted with the heat-insulating radiation metal cold screen (3), and the two are fixed on the cold screen support frame (1), so that the cold screen support frame (1), the spoiler tube (2), and the heat-insulating radiation metal cold screen (3) form a whole with a rigid structure; the cold screen support frame (1), the spoiler tube (2), the heat-insulating radiation metal cold screen (3), and the multi-layer reflective insulation winding material layer (4) are in a high vacuum environment; the multi-layer reflective insulation winding material layer (4) is coated with the heat-insulating radiation metal cold screen (3) and fixed with the heat-insulating radiation metal cold screen (3); After the cold screen support frame (1), the spoiler tube (2) and the insulating radiation metal cold screen (3) of the screen insulation support (5) are installed, the type of low-temperature medium in the spoiler tube is switched through the spoiler tube medium switching device (6); the cold screen support frame (1), the spoiler tube (2) and the insulating radiation metal cold screen (3) are made of different materials, and the thermal expansion coefficients of the three are quite different. When the temperature is lower, the spoiler tube (2) and the insulating radiation metal cold screen (3) fit more tightly, which fully ensures that the cold energy of the spoiler tube (2) is transferred to the insulating radiation metal cold screen (3), so as to maintain the low temperature of the insulating radiation metal cold screen (3).

2. The spoiler cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that The cold screen support frame (1) is a metal or non-metal plate frame structure in the shape of a cross.

3. The turbulent cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that The spoiler tube medium switching device (6) and the spoiler tube (2) are connected by a three-way switching connection.

4. The spoiler cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that The turbulent tube medium switching device (6) is connected to the evaporated gas stored in the inner tank (7) or the low-temperature medium from the outside.

5. The spoiler cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that A cold screen support frame (1), a spoiler tube (2), an insulating radiation metal cold screen (3) and a multi-layer reflective insulation winding material layer (4) are compositely wrapped around one side of an inner tank (7) and connected and fixed to an outer tank (8) via a cold screen insulation support (5). The inner tank (7) between the cold screen support frames (1) is provided with a pipeline with one end anchored and the other end slidable, so as to allow the spoiler cold screen structure (100) of the ultra-low temperature storage and transportation device to freely expand and contract around the anchor point in a low temperature environment.

6. The turbulent cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that The cold shield insulation support (5) can also be arranged on the other side of the cold shield support frame (1) and fixedly connected to the inner tank (7).

7. The spoiler cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that The spoiler tubes (2) are arranged in an axial tube array structure (21) or a spiral winding structure (22) or a cross spiral structure (23).

8. The turbulent cold shield structure (100) of the ultra-low temperature storage and transportation device according to claim 1, It is characterized in that The spoiler tubes (2) are arranged in a combined structure formed by an axial tube array structure (21), a spiral winding structure (22) and a cross-helical structure (23).

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