Ultra-low temperature liquid medium storage container

Abstract

The present invention discloses a storage container for ultra-low temperature liquid medium, comprising: an inner liner, an internal heat insulating material layer wrapped on the inner liner, an outer shell, a pressurization pipeline, a return air pipeline, a filling pipeline and a liquid outlet pipeline, wherein the inner liner is suspended in the inner cavity of the outer shell through an insulation support structure group, and a hollow vacuum internal heat insulating material layer is formed between the internal heat insulating material layer and the inner cavity wall of the outer shell; the pipelines in the pressurization heat exchanger, the vaporization heat exchanger and the gas heat exchanger are all fixedly connected to the inner cavity wall of the outer shell, and the pressurization heat exchanger is installed on the pressurization pipeline, the vaporization heat exchanger is installed on the liquid outlet pipeline, and the gas heat exchanger is installed on the return air pipeline. The structure uses the coldness of the ultra-low temperature liquid medium in the pressurization pipeline, the liquid outlet pipeline and the return air pipeline to reduce the temperature of the vacuum insulation layer, form a temperature gradient, effectively reduce the temperature difference between the inner liner and the outer shell, and thus improve the insulation performance of the storage container for ultra-low temperature liquid medium.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-low temperature liquid medium storage, and in particular to an ultra-low temperature liquid medium storage container. Background Art

[0002] The ultra-low temperature liquid medium storage container is generally a double-layer structure consisting of an inner liner and an outer shell, with an insulating material layer wrapped on the inner liner, and the inner liner is suspended and supported in the inner cavity of the outer shell by an insulating support structure group, and a hollow vacuum insulation layer is formed between the insulating material layer and the inner cavity wall of the outer shell. The low temperature liquid medium is stored in the inner liner, and the outer shell is in contact with the external environment. The insulation performance of the ultra-low temperature liquid medium storage container is mainly determined by the insulation support structure group with small heat conductivity, the insulation material layer with small thermal conductivity, and the vacuum insulation layer. However, when the ultra-low temperature liquid medium storage container using the above structure stores ultra-low temperature liquid media with a small phase change temperature range and easy to absorb heat and vaporize, it is far from enough to rely solely on the insulation support structure group with small heat, the insulation material layer with small thermal conductivity, and the vacuum internal insulation material layer to achieve good insulation performance. How to improve the insulation performance when storing ultra-low temperature liquid media with a small phase change temperature range and easy to absorb heat and vaporize, so as to solve the problem of large heat absorption of the stored ultra-low temperature liquid medium has always been a difficult problem that has troubled technicians in this field. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an ultra-low temperature liquid medium storage container with good thermal insulation performance, which can greatly reduce the heat absorption of the ultra-low temperature liquid medium stored in the inner tank.

[0004] To solve the above problems, the technical solution adopted by the present invention is: the ultra-low temperature liquid medium storage container comprises: an inner liner, an internal insulation material layer wrapped on the inner liner, an outer shell, a boosting pipeline, an air return pipeline, a filling pipeline and a liquid outlet pipeline, the inner liner is suspended in the inner cavity of the outer shell by an insulation support structure group, and a hollow vacuum insulation layer is formed between the internal insulation material layer and the inner cavity wall of the outer shell; it is characterized in that: it also includes: a boosting heat exchanger, a vaporization heat exchanger, and a gas heat exchanger, the heat exchange pipelines in the boosting heat exchanger, the vaporization heat exchanger, and the gas heat exchanger are all fixedly connected to the inner cavity wall of the outer shell, and the boosting heat exchanger is installed on the boosting pipeline, the vaporization heat exchanger is installed on the liquid outlet pipeline, and the gas heat exchanger is installed on the air return pipeline.

[0005] Furthermore, in the aforementioned ultra-low temperature liquid medium storage container, the heat exchange pipelines in the booster heat exchanger, the vaporization heat exchanger, and the gas heat exchanger are all coiled back and forth along the axial direction of the outer shell, covering the inner cavity wall of the outer shell.

[0006] Furthermore, the aforementioned ultra-low temperature liquid medium storage container, wherein the return air pipeline includes: a first return air duct and a second return air duct, one end of the first return air duct is connected to the return air port, the other end of the first return air duct seals through the through hole on the bottle mouth valve on the outer shell and then extends into the vacuum insulation layer, and is sealed and connected with the return air inlet of the gas heat exchanger, a first valve is installed on the first return air duct, and the second return air duct is sealed and connected at the return air outlet of the gas heat exchanger, and the second return air duct seals through the internal insulation material layer and the corresponding first through hole on the inner liner and then extends into the inner liner.

[0007] The boost pipeline includes: a first boost pipeline and a second boost pipeline, one end of the first boost pipeline is connected to the first return pipeline between the return port and the first valve, or one end of the first boost pipeline is connected to the return outlet of the gas heat exchanger, or one end of the first boost pipeline is connected to any position of the heat exchange pipeline of the gas heat exchanger except the return inlet and the return outlet of the gas heat exchanger, the other end of the first boost pipeline is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the boost outlet of the boost heat exchanger, a second valve is installed on the first boost pipeline, and the second boost pipeline is sealed and connected to the boost inlet of the boost heat exchanger, and the second boost pipeline is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner and then extends into the inner liner.

[0008] The liquid outlet pipeline includes: a first liquid outlet pipeline and a second liquid outlet pipeline, one end of the first liquid outlet pipeline is connected to the liquid outlet, the other end of the first liquid outlet pipeline is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected to the liquid outlet of the vaporization heat exchanger, a third valve is installed on the first liquid outlet pipeline, one end of the second liquid outlet pipeline with a fourth valve is sealed and connected to the liquid outlet inlet of the vaporization heat exchanger, and the other end of the second liquid outlet pipeline is connected to the first boosting pipeline between the second valve and the boosting outlet of the boosting heat exchanger. In this solution, the liquid outlet pipeline and the boosting pipeline share the second boosting pipeline and the boosting heat exchanger, so that the size of the vaporization heat exchanger can be reduced and the manufacturing cost can be further reduced.

[0009] Of course, in the actual production process, a solution can also be adopted in which the liquid outlet pipeline and the boost pipeline are independent of each other: the liquid outlet pipeline includes: a first liquid outlet pipeline and a second liquid outlet pipeline, one end of the first liquid outlet pipeline is connected to the liquid outlet, the other end of the first liquid outlet pipeline is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer, and is sealed and connected to the liquid outlet of the vaporization heat exchanger, a third valve is installed on the first liquid outlet pipeline, one end of the second liquid outlet pipeline with a fourth valve is sealed and connected to the liquid outlet inlet of the vaporization heat exchanger, and the other end of the second liquid outlet pipeline is sealed through the internal insulation material layer and the corresponding third through hole on the inner liner and then extends into the inner liner.

[0010] Among them, in this solution, the first valve adopts a low-temperature stop valve, the second valve and the third valve adopt low-temperature solenoid valves, and the fourth valve adopts a vacuum stop valve.

[0011] In order to further improve the insulation performance of the ultra-low temperature liquid medium storage container, this solution installs a vacuum valve box on the outer shell where the bottle mouth valve is located; the return air pipeline, filling pipeline, return air pipeline, and liquid outlet pipeline outside the bottle mouth valve all pass through the vacuum valve box and then extend into the vacuum insulation layer through the bottle mouth valve, and the return air pipeline, filling pipeline, return air pipeline, and liquid outlet pipeline outside the bottle mouth valve are respectively wrapped with an external insulation material layer.

[0012] The beneficial effects of the present invention are: utilizing the coldness of the ultra-low temperature liquid medium in the boosting pipeline, the liquid outlet pipeline, and the return air pipeline to reduce the temperature of the vacuum insulation layer, forming a temperature gradient, and effectively reducing the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a pipeline flow diagram of a first embodiment of an ultra-low temperature liquid medium storage container described in the present invention.

[0014] Figure 2 It is a pipeline flow diagram of a second embodiment of an ultra-low temperature liquid medium storage container described in the present invention.

[0015] Figure 3 It is a pipeline flow diagram of a third embodiment of an ultra-low temperature liquid medium storage container described in the present invention.

[0016] Figure 4 It is a pipeline flow diagram of a fourth embodiment of an ultra-low temperature liquid medium storage container described in the present invention.

[0017] Figure 5 It is a pipeline flow diagram of a fifth embodiment of an ultra-low temperature liquid medium storage container described in the present invention.

[0018] Figure 6 It is a pipeline flow diagram of a sixth embodiment of an ultra-low temperature liquid medium storage container described in the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0020] Embodiment 1

[0021] The ultra-low temperature liquid medium storage container generally includes: an inner liner 1, an internal insulation material layer wrapped on the inner liner 1, an outer shell 2, a pressurization pipeline, a return air pipeline, a filling pipeline and a liquid outlet pipeline. The inner liner 1 is suspended in the inner cavity of the outer shell 2 by an insulation support structure group, and a hollow vacuum insulation layer is formed between the internal insulation material layer and the inner cavity wall of the outer shell 2. This solution is to add a pressurization heat exchanger 33, a vaporization heat exchanger 32, and a gas heat exchanger 31 in the vacuum insulation layer on the basis of the original ultra-low temperature liquid medium storage container, and the pressurization heat exchanger 33 is installed on the pressurization pipeline, the vaporization heat exchanger 32 is installed on the liquid outlet pipeline, and the gas heat exchanger 31 is installed on the return air pipeline.

[0022] like Figure 1 The figure shows a schematic diagram of the pipeline flow of the boost heat exchanger 33, the vaporization heat exchanger 32, and the gas heat exchanger 31 added in the vacuum insulation layer, and does not represent the actual installation position of the boost heat exchanger 33, the vaporization heat exchanger 32, and the gas heat exchanger 31. The specific installation method of the boost heat exchanger 33, the vaporization heat exchanger 32, and the gas heat exchanger 31 in this scheme is: the heat exchange pipelines in the boost heat exchanger 33, the vaporization heat exchanger 32, and the gas heat exchanger 31 are all fixedly connected to the inner cavity wall of the outer shell 2, and are reciprocated and coiled back and forth along the axial direction of the outer shell 2 to cover the inner cavity wall of the outer shell 2.

[0023] like Figure 1 As shown, the return air pipeline described in this embodiment includes: a first return air pipeline 41 and a second return air pipeline 42, one end of the first return air pipeline 41 is connected to the return air port 401, the other end of the first return air pipeline 41 is sealed through the through hole on the bottle mouth valve on the outer shell 2 and then extends into the vacuum insulation layer and is sealed and connected with the return air inlet of the gas heat exchanger 31, a first valve 71 is installed on the first return air pipeline 41, and the return air outlet of the gas heat exchanger 31 is sealed and connected with the second return air pipeline 42, and the second return air pipeline 42 is sealed through the internal insulation material layer and the corresponding first through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the first valve 71 adopts a low-temperature stop valve.

[0024] When the ultra-low temperature liquid medium storage container is used in the whole system, the return air of the system returns to the inner tank 1 through the return air port 401, the first return air pipeline 41, the gas heat exchanger 31, and the second return air pipeline 42. At this time, the coldness in the return air can be used to reduce the temperature of the vacuum insulation layer.

[0025] like Figure 1As shown, the boosting pipeline described in this embodiment includes: a first boosting pipeline 51 and a second boosting pipeline 52, one end of the first boosting pipeline 51 is connected to the first return air pipeline 41 between the return air port 401 and the first valve 71, the other end of the first boosting pipeline 42 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the boost outlet of the boosting heat exchanger 33, the second valve 72 is installed on the first boosting pipeline 51, the second boosting pipeline 52 is sealed and connected to the boost inlet of the boosting heat exchanger 33, and the second boosting pipeline 52 is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the second valve 72 adopts a low-temperature solenoid valve.

[0026] When the ultra-low temperature liquid medium storage container needs to be pressurized, the ultra-low temperature liquid medium in the inner tank 1 returns to the inner tank 1 through the second boosting pipeline 52, the boosting heat exchanger 33, the first boosting pipeline 51, the first return air pipeline 41, the gas heat exchanger 31, and the second return air pipeline 42, and the inner tank 1 is pressurized. At this time, the ultra-low temperature liquid medium flowing out of the inner tank 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and then returns to the inner tank 1 after passing through the gas heat exchanger 31. This arrangement fully utilizes the coldness of the boosting pipeline: the coldness of the boosting pipeline is used at the boosting heat exchanger 33 to reduce the temperature of the vacuum insulation layer, and the coldness of the boosting pipeline is used again at the gas heat exchanger 31 to reduce the temperature of the vacuum insulation layer, thereby further reducing the temperature of the vacuum insulation layer and improving the insulation performance of the ultra-low temperature liquid medium storage container.

[0027] like Figure 1 As shown, the liquid outlet pipeline described in this embodiment includes: a first liquid outlet pipeline 61 and a second liquid outlet pipeline 62, one end of the first liquid outlet pipeline 61 is connected to the liquid outlet 601, the other end of the first liquid outlet pipeline 61 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected to the liquid outlet of the vaporization heat exchanger 32, a third valve 73 is installed on the first liquid outlet pipeline 61, one end of the second liquid outlet pipeline 62 with a fourth valve 74 is sealed and connected to the liquid outlet inlet of the vaporization heat exchanger 32, and the other end of the second liquid outlet pipeline 62 is connected to the first boosting pipeline 51 between the second valve 72 and the boosting outlet of the boosting heat exchanger 33. Among them, the third valve 73 adopts a low-temperature solenoid valve, and the fourth valve 74 adopts a vacuum stop valve.

[0028] When the ultra-low temperature liquid medium storage container outputs the ultra-low temperature liquid medium, the ultra-low temperature liquid medium outputs the ultra-low temperature liquid medium through the second boosting pipe 52, the boosting heat exchanger 33, the first boosting pipe 51, the second liquid outlet pipe 62, the vaporizing heat exchanger 32, the first liquid outlet pipe 61, and the liquid outlet 601. At this time, in the process of outputting the ultra-low temperature liquid medium, the ultra-low temperature liquid medium passes through the boosting heat exchanger 33 and the vaporizing heat exchanger 32 in sequence. Such a setting can not only reduce the size of the vaporizing heat exchanger 32 and further reduce the manufacturing cost; but also use the cold energy passing through the boosting heat exchanger 33 and the vaporizing heat exchanger 32 to reduce the temperature of the vacuum insulation layer, thereby further reducing the temperature of the vacuum insulation layer and improving the insulation performance of the ultra-low temperature liquid medium storage container.

[0029] In order to further improve the thermal insulation performance of the ultra-low temperature liquid medium storage container, the present solution further installs a vacuum valve box 8 on the outer shell where the bottle mouth valve is located. The return air pipeline, filling pipeline, return air pipeline, and liquid outlet pipeline located outside the bottle mouth valve all pass through the vacuum valve box 8 and then extend into the vacuum insulation layer through the bottle mouth valve, and the return air pipeline, filling pipeline, return air pipeline, and liquid outlet pipeline located outside the bottle mouth valve are respectively wrapped with an external insulation material layer. The arrangement of the external insulation material layer and the vacuum valve box 8 further prevents the heat in the external environment from being brought into the inner liner 1, and further improves the thermal insulation performance of the ultra-low temperature liquid medium storage container.

[0030] This scheme uses the coldness of the ultra-low temperature liquid medium in the boosting pipeline, the liquid outlet pipeline, and the return gas pipeline to reduce the temperature of the vacuum insulation layer. In addition, the boosting heat exchanger 33 and the gas heat exchanger 31 are used to double the coldness of the boosting pipeline, and the boosting heat exchanger 33 and the vaporization heat exchanger 32 are used to double the coldness of the liquid outlet pipeline when the liquid outlet pipeline and the boosting pipeline are shared, so as to further reduce the temperature of the vacuum insulation layer, form a temperature gradient, and effectively reduce the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. This scheme can fully meet the insulation requirements when storing ultra-low temperature liquid media with a small phase change temperature range and easy to absorb heat and vaporize, and the insulation effect is the best compared with the second and third embodiments.

[0031] Embodiment 2

[0032] The difference between this embodiment and embodiment one is that the ultra-low temperature liquid medium flowing out of the inner tank 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and then returns to the inner tank 1 after passing through the heat exchange pipeline of the partial gas heat exchanger 31. The rest of the structure is the same as that of embodiment one.

[0033] That is, the boost pipeline is set differently from that in the first embodiment, and the rest of the structure is the same as that in the first embodiment. Figure 2As shown, the boosting pipeline described in this embodiment includes: a first boosting pipeline 51 and a second boosting pipeline 52. One end of the first boosting pipeline 51 is connected to any position of the heat exchange pipeline of the gas heat exchanger 31 except the return gas inlet and the return gas outlet on the gas heat exchanger 31. The specific position can be determined according to the use requirements. The other end of the first boosting pipeline 42 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the boost outlet of the boosting heat exchanger 33. A second valve 72 is installed on the first boosting pipeline 51. The second boosting pipeline 52 is sealed and connected at the boosting inlet of the boosting heat exchanger 33. The second boosting pipeline 52 is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner 1 and then extends into the inner liner 1. At this time, the ultra-low temperature liquid medium flowing out of the inner liner 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and then returns to the inner liner 1 after passing through the heat exchange pipeline of part of the gas heat exchanger 31.

[0034] This scheme uses the coldness of the ultra-low temperature liquid medium in the boosting pipeline, the liquid outlet pipeline, and the return gas pipeline to reduce the temperature of the vacuum insulation layer. In addition, the boosting heat exchanger 33 and the partial gas heat exchanger 31 are used to double the coldness of the boosting pipeline, and the boosting heat exchanger 33 and the vaporization heat exchanger 32 are used to double the coldness of the liquid outlet pipeline when the liquid outlet pipeline and the boosting pipeline are shared, so as to further reduce the temperature of the vacuum insulation layer, form a temperature gradient, and effectively reduce the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. This scheme can fully meet the insulation requirements for storing ultra-low temperature liquid media with a small phase change temperature range and easy to absorb heat and vaporize, and the insulation effect is also relatively good.

[0035] Embodiment 3

[0036] The difference between this embodiment and the first embodiment is that the ultra-low temperature liquid medium flowing out of the inner tank 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and does not pass through the heat exchange pipeline of the gas heat exchanger 31, but directly returns to the inner tank 1 through the second return air pipe 42.

[0037] That is, the boost pipeline is set differently from that in the first embodiment, and the rest of the structure is the same as that in the first embodiment. Figure 3As shown, the boosting pipeline described in this embodiment includes: a first boosting pipeline 51 and a second boosting pipeline 52, one end of the first boosting pipeline 51 is connected to the return gas outlet of the gas heat exchanger 31, the other end of the first boosting pipeline 42 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer, and is sealed and connected with the boost outlet of the boosting heat exchanger 33, a second valve 72 is installed on the first boosting pipeline 51, and the second boosting pipeline 52 is sealed and connected to the boosting inlet of the boosting heat exchanger 33, and the second boosting pipeline 52 is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner 1 and then extends into the inner liner 1. At this time, the ultra-low temperature liquid medium flowing out of the inner liner 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and does not pass through the heat exchange pipeline of the gas heat exchanger 31, but directly returns to the inner liner 1 through the second return gas pipeline 42.

[0038] This solution uses the coldness of the ultra-low temperature liquid medium in the booster pipeline, the liquid outlet pipeline, and the return air pipeline to reduce the temperature of the vacuum insulation layer. In addition, when the liquid outlet pipeline and the booster pipeline are shared, the booster heat exchanger 33 and the vaporization heat exchanger 32 are used to double the coldness of the liquid outlet pipeline, further reducing the temperature of the vacuum insulation layer, forming a temperature gradient, and effectively reducing the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. This solution can fully meet the insulation requirements for storing ultra-low temperature liquid media with a small phase change temperature range and extremely easy to absorb heat and vaporize, and the insulation effect is also relatively good.

[0039] Embodiment 4

[0040] The difference between this embodiment and the first embodiment is that the liquid outlet pipeline and the boost pipeline are independent of each other and do not share the second boost pipeline 52 and the boost heat exchanger 33. The rest of the structure is the same as that of the first embodiment.

[0041] like Figure 4 As shown, the boosting pipeline described in this embodiment includes: a first boosting pipeline 51 and a second boosting pipeline 52, one end of the first boosting pipeline 51 is connected to the first return air pipeline 41 between the return air port 401 and the first valve 71, the other end of the first boosting pipeline 42 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the boost outlet of the boosting heat exchanger 33, the second valve 72 is installed on the first boosting pipeline 51, the second boosting pipeline 52 is sealed and connected to the boost inlet of the boosting heat exchanger 33, and the second boosting pipeline 52 is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the second valve 72 adopts a low-temperature solenoid valve.

[0042] like Figure 4As shown, the liquid outlet pipeline described in this embodiment includes: a first liquid outlet pipeline 61 and a second liquid outlet pipeline 62, one end of the first liquid outlet pipeline 61 is connected to the liquid outlet 601, the other end of the first liquid outlet pipeline 61 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the liquid outlet of the vaporization heat exchanger 32, a third valve 73 is installed on the first liquid outlet pipeline 61, one end of the second liquid outlet pipeline 62 with a fourth valve 74 is sealed and connected with the liquid outlet inlet of the vaporization heat exchanger 32, and the other end of the second liquid outlet pipeline 62 is sealed through the internal insulation material layer and the corresponding third through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the third valve 73 adopts a low-temperature solenoid valve, and the fourth valve 74 adopts a vacuum stop valve.

[0043] This solution uses the coldness of the ultra-low temperature liquid medium in the booster pipeline, the liquid outlet pipeline, and the return gas pipeline to reduce the temperature of the vacuum insulation layer. In addition, the booster heat exchanger 33 and the gas heat exchanger 31 are used to double the coldness of the booster pipeline to further reduce the temperature of the vacuum insulation layer, form a temperature gradient, and effectively reduce the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. This solution can fully meet the insulation requirements for storing ultra-low temperature liquid media with a small phase change temperature range and extremely easy to absorb heat and vaporize, and the insulation effect is also relatively good.

[0044] Embodiment 5

[0045] The difference between this embodiment and the fourth embodiment is that the ultra-low temperature liquid medium flowing out of the inner tank 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and then returns to the inner tank 1 after passing through the heat exchange pipeline of the partial gas heat exchanger 31. The rest of the structure is the same as that of the fourth embodiment.

[0046] like Figure 5 As shown, the boosting pipeline described in this embodiment includes: a first boosting pipeline 51 and a second boosting pipeline 52. One end of the first boosting pipeline 51 is connected to any position of the heat exchange pipeline of the gas heat exchanger 31 except the return gas inlet and the return gas outlet on the gas heat exchanger 31. The specific position can be determined according to the use requirements. The other end of the first boosting pipeline 42 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the boost outlet of the boosting heat exchanger 33. A second valve 72 is installed on the first boosting pipeline 51. The second boosting pipeline 52 is sealed and connected at the boosting inlet of the boosting heat exchanger 33. The second boosting pipeline 52 is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the second valve 72 adopts a low-temperature solenoid valve.

[0047] like Figure 5As shown, the liquid outlet pipeline described in this embodiment includes: a first liquid outlet pipeline 61 and a second liquid outlet pipeline 62, one end of the first liquid outlet pipeline 61 is connected to the liquid outlet 601, the other end of the first liquid outlet pipeline 61 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the liquid outlet of the vaporization heat exchanger 32, a third valve 73 is installed on the first liquid outlet pipeline 61, one end of the second liquid outlet pipeline 62 with a fourth valve 74 is sealed and connected with the liquid outlet inlet of the vaporization heat exchanger 32, and the other end of the second liquid outlet pipeline 62 is sealed through the internal insulation material layer and the corresponding third through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the third valve 73 adopts a low-temperature solenoid valve, and the fourth valve 74 adopts a vacuum stop valve.

[0048] This solution uses the coldness of the ultra-low temperature liquid medium in the booster pipeline, the liquid outlet pipeline, and the return gas pipeline to reduce the temperature of the vacuum insulation layer. In addition, the booster heat exchanger 33 and the partial gas heat exchanger 31 are used to double the coldness of the booster pipeline to further reduce the temperature of the vacuum insulation layer, form a temperature gradient, and effectively reduce the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. This solution can fully meet the insulation requirements for storing ultra-low temperature liquid media with a small phase change temperature range and extremely easy to absorb heat and vaporize, and the insulation effect is also relatively good.

[0049] Embodiment 6

[0050] The difference between this embodiment and the fourth embodiment is that the ultra-low temperature liquid medium flowing out of the inner tank 1 is pressurized by the boosting heat exchanger 33 of the boosting pipeline, and does not pass through the heat exchange pipeline of the gas heat exchanger 31, but directly returns to the inner tank 1 through the second return air pipe 42. The rest of the structure is the same as that of the fourth embodiment.

[0051] like Figure 6 As shown, the boosting pipeline described in this embodiment includes: a first boosting pipeline 51 and a second boosting pipeline 52, one end of the first boosting pipeline 51 is connected to the return gas outlet of the gas heat exchanger 31, the other end of the first boosting pipeline 42 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer, and is sealed and connected with the boost outlet of the boosting heat exchanger 33, a second valve 72 is installed on the first boosting pipeline 51, and the second boosting pipeline 52 is sealed and connected to the boosting inlet of the boosting heat exchanger 33, and the second boosting pipeline 52 is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the second valve 72 adopts a low-temperature solenoid valve.

[0052] like Figure 6As shown, the liquid outlet pipeline described in this embodiment includes: a first liquid outlet pipeline 61 and a second liquid outlet pipeline 62, one end of the first liquid outlet pipeline 61 is connected to the liquid outlet 601, the other end of the first liquid outlet pipeline 61 is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the liquid outlet of the vaporization heat exchanger 32, a third valve 73 is installed on the first liquid outlet pipeline 61, one end of the second liquid outlet pipeline 62 with a fourth valve 74 is sealed and connected with the liquid outlet inlet of the vaporization heat exchanger 32, and the other end of the second liquid outlet pipeline 62 is sealed through the internal insulation material layer and the corresponding third through hole on the inner liner 1 and then extends into the inner liner 1. Among them, the third valve 73 adopts a low-temperature solenoid valve, and the fourth valve 74 adopts a vacuum stop valve.

[0053] This solution uses the coldness of the ultra-low temperature liquid medium in the booster pipeline, liquid outlet pipeline, and return air pipeline to reduce the temperature of the vacuum insulation layer, forming a temperature gradient, effectively reducing the temperature difference between the inner tank and the outer shell, thereby improving the insulation performance of the ultra-low temperature liquid medium storage container and reducing the heat absorption of the stored low temperature liquid medium. This solution can fully meet the insulation requirements for storing ultra-low temperature liquid media with a small phase change temperature range and easy to absorb heat and vaporize, and the insulation effect is also relatively good.

[0054] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. A cryogenic liquid medium storage container, comprising: An inner liner, an internal insulation material layer wrapped on the inner liner, an outer shell, a pressurization pipeline, a return air pipeline, a filling pipeline and a liquid outlet pipeline. The inner liner is suspended in the inner cavity of the outer shell through an insulation support structure group, and a hollow vacuum insulation layer is formed between the internal insulation material layer and the inner cavity wall of the outer shell; it is characterized in that it also includes: a pressurization heat exchanger, a vaporization heat exchanger, and a gas heat exchanger. The heat exchange pipelines in the pressurization heat exchanger, the vaporization heat exchanger, and the gas heat exchanger are all fixedly connected to the inner cavity wall of the outer shell, and the pressurization heat exchanger is installed on the pressurization pipeline, the vaporization heat exchanger is installed on the liquid outlet pipeline, and the gas heat exchanger is installed on the return air pipeline; The return air pipeline includes: a first return air pipeline and a second return air pipeline, one end of the first return air pipeline is connected to the return air port, the other end of the first return air pipeline is sealed through the through hole on the bottle mouth valve on the outer shell and then extends into the vacuum insulation layer and is sealed and connected with the return air inlet of the gas heat exchanger, a first valve is installed on the first return air pipeline, and the return air outlet of the gas heat exchanger is sealed and connected with the second return air pipeline, and the second return air pipeline is sealed through the internal insulation material layer and the corresponding first through hole on the inner liner and then extends into the inner liner; The boost pipeline includes: a first boost pipeline and a second boost pipeline, one end of the first boost pipeline is connected to the first return pipeline between the return port and the first valve, or one end of the first boost pipeline is connected to the return outlet of the gas heat exchanger, or one end of the first boost pipeline is connected to any position of the heat exchange pipeline of the gas heat exchanger except the return inlet and the return outlet of the gas heat exchanger, the other end of the first boost pipeline is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the boost outlet of the boost heat exchanger, a second valve is installed on the first boost pipeline, and the second boost pipeline is sealed and connected to the boost inlet of the boost heat exchanger, and the second boost pipeline is sealed through the internal insulation material layer and the corresponding second through hole on the inner liner and then extends into the inner liner; The liquid outlet pipeline includes: a first liquid outlet pipeline and a second liquid outlet pipeline, one end of the first liquid outlet pipeline is connected to the liquid outlet, the other end of the first liquid outlet pipeline is sealed through the through hole on the bottle mouth valve and then extends into the vacuum insulation layer and is sealed and connected with the liquid outlet of the vaporization heat exchanger, a third valve is installed on the first liquid outlet pipeline, one end of the second liquid outlet pipeline with a fourth valve is sealed and connected with the liquid outlet inlet of the vaporization heat exchanger, the other end of the second liquid outlet pipeline is connected to the first boosting pipeline between the second valve and the boosting outlet of the boosting heat exchanger or the other end of the second liquid outlet pipeline is sealed through the internal insulation material layer and the corresponding third through hole on the inner tank and then extends into the inner tank.

2. The ultra-low temperature liquid medium storage container according to claim 1, characterized in that: The heat exchange pipelines in the boost heat exchanger, the vaporization heat exchanger and the gas heat exchanger are all reciprocated and coiled back and forth along the axial direction of the outer shell, covering the inner cavity wall of the outer shell.

3. A super-low temperature liquid medium storage container according to claim 1 or 2, characterized in that: The first valve is a low-temperature stop valve, the second valve and the third valve are both low-temperature solenoid valves, and the fourth valve is a vacuum stop valve.

4. The ultra-low temperature liquid medium storage container according to claim 1 or 2, characterized in that: A vacuum valve box is installed on the outer shell where the bottle mouth valve is located; the return air pipeline, filling pipeline, return air pipeline and liquid outlet pipeline outside the bottle mouth valve all pass through the vacuum valve box and then extend into the vacuum insulation layer through the bottle mouth valve, and the return air pipeline, filling pipeline, return air pipeline and liquid outlet pipeline outside the bottle mouth valve are respectively wrapped with an external insulation material layer.

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