Heat insulation cryogenic storage device

Abstract

The utility model discloses a heat insulation cryogenic storage device which comprises a first container, a second container, a liquid inlet valve and a liquid outlet valve. The number of the second containers is two, the two second containers are arranged in the first container, the two second containers and the first container are coaxially arranged, a heat insulation space is arranged between the first container and the second containers, and the heat insulation space is used for insulating heat conduction between the first container and the second containers; the liquid inlet valve is communicated with the second container and is used for controlling liquid to enter the second container; the liquid discharging valve is communicated with the second containers, the liquid discharging valve is used for controlling liquid to be discharged out of the second containers, the first container serves as a frame support of the whole device and protects the second containers, the two second containers are coaxially arranged, the structure of the device can be optimized, manufacturing materials are saved, and the occupied space of the device is optimized; and moreover, the cooling capacity loss of the cold bridge can be reduced, so that the heat insulation effect of the device is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heat preservation storage, especially relates to a heat insulation cryogenic storage device. BACKGROUND

[0002] Heat preservation storage is widely used in various industries, especially in industrial activities, and ultra-low temperature storage is an essential condition for maintaining the working characteristics of certain substances.

[0003] In the previous heat insulation storage of liquid nitrogen, carbon dioxide and liquid oxygen, only one second container is placed inside the first container, which not only wastes the manufacturing materials of the first container, but also increases the floor space of the device and the cold loss of the cold bridge. SUMMARY

[0004] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a heat insulation cryogenic storage device, which can not only save manufacturing materials and optimize the floor space of the device, but also reduce the cold loss of the cold bridge.

[0005] According to the heat insulation cryogenic storage device provided by the utility model, the first container and the second container are coaxially arranged, and the heat insulation space is arranged between the first container and the second container, which can insulate the heat conduction between the first container and the second container.

[0006] The first container serves as a frame support for the entire device and protects the second container. The second container is coaxially arranged and can optimize the structure of the device. The device can save manufacturing materials, optimize the floor space of the device, reduce the cold loss of the cold bridge, and improve the heat insulation effect. The space between the first container and the second container is the heat insulation space, and the air in the heat insulation space is extracted as much as possible to simulate a vacuum environment, reduce the heat conduction between the first container and the second container, avoid heat exchange between the second container and the outside world as much as possible, and ensure the heat insulation effect during storage. The liquid inlet valve and the liquid outlet valve are used to flow the liquid to be stored into the second container or flow the liquid to be stored out of the second container.

[0007] According to some embodiments of the present application, a vacuum gauge and a vacuum valve are arranged on the first container, the vacuum gauge and the vacuum valve are connected in parallel and communicate with the heat insulation space, the vacuum gauge is used for detecting the pressure in the heat insulation space, and the vacuum valve is used for controlling the air flow in the heat insulation space.

[0008] According to some embodiments of the present application, a booster system is arranged on the second container, the booster system is used for pressurizing the liquid in the second container, the booster system pressurizes the liquid stored in the second container to reach a suitable pressure for storage.

[0009] According to some embodiments of the present application, the booster system comprises an inlet valve, an outlet valve, a cut-off valve and a booster, the inlet valve, the outlet valve, the cut-off valve and the booster are connected in sequence to form a loop, the cut-off valve is arranged as a normally closed valve, and the booster is used for pressurizing the liquid in the second container.

[0010] According to some embodiments of the present application, a first safety valve and a first root valve are arranged in sequence between the booster and the cut-off valve, one end of the first root valve communicates with the pipeline between the booster and the cut-off valve, the other end of the first root valve communicates with one end of the first safety valve, the other end of the first safety valve communicates with the outside, the safety valve is used for protecting the second container and preventing the equipment from being damaged due to excessive pressure in the second container, and the first root valve is used for isolating the first safety valve and the second container, facilitating the maintenance of the first safety valve and the protection of the first safety valve.

[0011] According to some embodiments of the present application, a liquid level detection system is arranged on the second container, and the liquid level detection system is used for detecting the position of the liquid in the second container.

[0012] According to some embodiments of the utility model, the liquid level detection system comprises: a first liquid level gauge valve, a second liquid level gauge valve, a differential pressure transmitter, a first liquid level gauge and a second liquid level gauge, one end of the first liquid level gauge valve is communicated with the second container, the other end of the first liquid level gauge valve is communicated with the first liquid level gauge, one end of the second liquid level gauge valve is communicated with the second container, the other end of the second liquid level gauge valve is communicated with the second liquid level gauge, the differential pressure transmitter is arranged between the first liquid level gauge and the second liquid level gauge, one end of the differential pressure transmitter is communicated with the first liquid level gauge, the other end of the differential pressure transmitter is communicated with the second liquid level gauge, the first liquid level valve and the second liquid level valve are used for controlling the start and stop of the liquid level detection system, the first liquid level gauge and the second liquid level gauge are used for detecting the liquid surface position in the second container, and the differential pressure transmitter is used for measuring the pressure difference between the first liquid level gauge and the second liquid level gauge and maintaining the stability of the liquid surface detection system.

[0013] According to some embodiments of the utility model, the liquid level detection system further comprises: a third liquid level gauge valve and a pressure transmitter, one end of the third liquid level gauge valve is communicated with the second container, the other end of the third liquid level gauge valve is communicated with the pressure transmitter, and the pressure transmitter is used for detecting the pressure of the liquid in the second container, thereby strengthening the protection of the system and avoiding excessive pressure in the second container.

[0014] According to some embodiments of the utility model, the first container is provided with a second safety valve and a second valve, one end of the second valve is communicated with the first container, the other end of the second valve is communicated with one end of the second safety valve, the other end of the second safety valve is communicated with the outside, the second safety valve is used for protecting the heat insulation space and avoiding the pressure in the heat insulation space exceeding a critical value, the second valve is used in cooperation with the second safety valve, the second valve is used for protecting the second safety valve and facilitating the maintenance of the second safety valve.

[0015] According to some embodiments of the utility model, the first container is made of corrosion-resistant and weather-resistant material, and the second container is made of corrosion-resistant and low-temperature-resistant material, since the first container is exposed to the outside, the corrosion-resistant and weather-resistant material for manufacturing the first container can effectively increase the service life of the first container, and the second container is used for loading low-temperature liquid, and the corrosion-resistant and low-temperature-resistant material for manufacturing the second container can effectively increase the service life of the second container.

[0016] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model makes further illustration in combination with the drawings and examples, among which,

[0018] Figure 1 It is structure schematic diagram of a kind of adiabatic cryogenic storage device of the utility model embodiment;

[0019] Reference signs: first container 100, vacuum gauge 110, vacuum valve 120, second safety valve 130, second root valve 140;

[0020] Second container 200, heat insulation space 210, liquid inlet valve 220, liquid outlet valve 230;

[0021] Boost system 300, inlet valve 310, outlet valve 320, cut-off valve 330, booster 340, first safety valve 350, first root valve 360.

[0022] Liquid level detection system 400, first liquid level meter valve 410, second liquid level meter valve 420, differential pressure transmitter 430, first liquid level meter 440, second liquid level meter 450, third liquid level meter valve 460, pressure transmitter 470. Specific implementation

[0023] In the description of the utility model, it needs to be understood that, if there is description to orientation, for example, the orientation or positional relationship of indication such as upper, lower, front, back, left, right based on the orientation or positional relationship shown in drawing, is only for the convenience of describing the utility model and simplifying description, and is not to indicate or imply that the device or element indicated must have a particular orientation, to be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation to the utility model.

[0024] In the description of the utility model, if there is description to first, second, just for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequence of indicated technical features.

[0025] In the description of the utility model, unless otherwise explicitly limited, setting, installing, connecting and the like words should be broadly understood, and the person skilled in the art can combine the specific content of technical scheme to reasonably determine the specific meaning of above-mentioned words in the utility model.

[0026] Refer to Figure 1The utility model discloses a kind of adiabatic cryogenic storage devices, comprising: first container 100, second container 200;Second container 200 is provided with two, two second container 200 is arranged in first container 100 interior, two second container 200 is coaxially arranged with first container 100, heat insulation space 210 is arranged between first container 100 and second container 200, heat insulation space 210 is used to isolate the heat conduction between first container 100 and second container 200;Liquid inlet valve 220 is communicated second container 200, liquid inlet valve 220 is used to control liquid to enter second container 200;Second container 200 is provided with liquid inlet valve 220 and liquid outlet valve 230, liquid inlet valve 220 is used to control liquid to enter second container 200, liquid outlet valve 230 is used to control liquid to discharge second container 200.

[0027] First container 100 is the frame support of entire setting, and protect second container 200, second container 200 is provided with two and coaxially arranged, can optimize the structure of this device, not only save manufacturing material, optimize the land space of device, and the setting can reduce the cold energy loss of cold bridge, so that the heat insulation effect of this device is better, the space between first container 100 and second container 200 is set as heat insulation space 210, air in heat insulation space 210 is extracted as far as possible, so that the environment of heat insulation space 210 is simulated as vacuum, reduce the heat conduction between first container 100 and second container 200, can avoid second container 200 and outside heat exchange as far as possible, guarantee the heat insulation effect when storing, liquid inlet valve 220 and liquid outlet valve 230 are used to flow into second container 200 or flow out of second container 200 for the liquid to be stored.

[0028] In some embodiments, vacuum gauge 110 and vacuum valve 120 are provided on first container 100, vacuum gauge 110 and vacuum valve 120 are connected in parallel and communicated with heat insulation space 210, vacuum gauge 110 is used to detect the pressure in heat insulation space 210, and vacuum valve 120 is used to control the air flow in heat insulation space 210.

[0029] In some embodiments, the second container 200 is provided with a pressurization system 300 for pressurizing the interior of the second container 200, the pressurization system 300 pressurizes the liquid stored in the second container 200 to a pressure suitable for storage, facilitating storage. The pressurization system 300 includes an inlet valve 310, an outlet valve 320, a cut-off valve 330, and a pressurizer 340. One end of the second container 200 is connected to the outlet of the inlet valve 310, and the other end of the second container 200 is connected to the inlet of the outlet valve 320. The inlet of the cut-off valve 330 is connected to the outlet of the outlet valve 320, the outlet of the cut-off valve 330 is connected to the inlet of the pressurizer 340, and the outlet of the pressurizer 340 is connected to the inlet of the inlet valve 310. The inlet valve 310, the outlet valve 320, and the cut-off valve 330 control the flow of liquid in the pressurization system 300. The pressurizer 340 is used to apply pressure to the liquid and is driven by an electric motor. The pressurizer 340 is generally a plunger pump or other liquid pressurizer 340. The pressurization system 300 in this device is a conventional pressurization system 300, which does not require further elaboration.

[0030] It can be understood that a first safety valve 350 and a first root valve 360 are sequentially arranged between the pressurizer 340 and the cut-off valve 330. One end of the first root valve 360 is connected to the pipeline between the pressurizer 340 and the cut-off valve 330, and the other end of the first root valve 360 is connected to one end of the first safety valve 350. The other end of the first safety valve 350 is connected to the outside. The safety valve is used to protect the second container 200 from damage caused by excessive pressure in the second container 200. The first root valve 360 is used to isolate the first safety valve 350 and the second container 200, facilitating maintenance of the first safety valve 350 and protection of the first safety valve 350. It can be understood that the first safety valve 350 and the first root valve 360 protect the equipment and pipeline system from overpressure damage and isolate the safety valve for maintenance or replacement when needed. The safety valve and its root valve are used together and can be replaced by a pilot-operated safety valve and an electronic pressure protection system or other equipment that can protect the equipment and pipeline system from overpressure damage.

[0031] It is contemplated that the second container 200 is provided with a liquid level detection system 400, the liquid level detection system 400 is used to detect the position of the liquid in the second container 200, the liquid level detection system 400 comprises: a first liquid level meter valve 410, a second liquid level meter valve 420, a differential pressure transmitter 430, a first liquid level meter 440 and a second liquid level meter 450, one end of the first liquid level meter valve 410 is communicated with the second container 200, the other end of the first liquid level meter valve 410 is communicated with the first liquid level meter 440, one end of the second liquid level meter valve 420 is communicated with the second container 200, the other end of the second liquid level meter valve 420 is communicated with the second liquid level meter 450, the differential pressure transmitter 430 is arranged between the first liquid level meter 440 and the second liquid level meter 450, one end of the differential pressure transmitter 430 is communicated with the first liquid level meter 440, the other end of the differential pressure transmitter 430 is communicated with the second liquid level meter 450, the first liquid level valve and the second liquid level valve are used to control the start and stop of the liquid level detection system 400, the first liquid level meter 440 and the second liquid level meter 450 are used to detect the liquid level position in the second container 200, the differential pressure transmitter 430 is used to measure the pressure difference between the first liquid level meter 440 and the second liquid level meter 450, and maintain the stability of the liquid level detection system. It is understood that the liquid level detection system 400 is used to monitor the liquid level change in real time, ensure the safe operation of the equipment, optimize the process control and prevent overflow or dry running.

[0032] It should be noted that the third liquid level meter valve 460, the pressure transmitter 470, one end of the third liquid level meter valve 460 is communicated with the second container 200, the other end of the third liquid level meter valve 460 is communicated with the pressure transmitter 470, the pressure transmitter 470 is used to detect the pressure of the liquid in the second container 200, which strengthens the protection of the system and avoids excessive pressure in the second container 200. The liquid level meter valve and the pressure transmitter 470 are common technologies for those skilled in the art, and will not be described in detail.

[0033] It should be noted that the first container 100 is provided with a second safety valve 130 and a second root valve 140, one end of the second root valve 140 is communicated with the first container 100, the other end of the second root valve 140 is communicated with one end of the second safety valve 130, the other end of the second safety valve 130 is communicated with the outside, the second safety valve 130 is used to protect the heat insulation space 210, so as to avoid the pressure in the heat insulation space 210 exceeding the critical value, the second root valve 140 is used in cooperation with the second safety valve 130, the second root valve 140 is used to protect the second safety valve 130, and the second safety valve 130 is convenient for maintenance. It can be understood that the second safety valve 130 and the second root valve are used to protect the equipment and pipeline system, and isolate the safety valve for maintenance or replacement when needed. The safety valve and its root valve are used in cooperation, which can also be replaced by a pilot safety valve and an electronic pressure protection system and other devices that can protect the equipment and pipeline system from overpressure damage.

[0034] In some embodiments, the first container 100 is made of a material that is both corrosion resistant and weather resistant, and the second container 200 is made of a material that is both corrosion resistant and low-temperature resistant. Since the first container 100 is exposed to the outside world, the material that is both corrosion resistant and weather resistant for manufacturing the first container 100 can effectively increase the service life of the first container 100. The second container 200 is used to load low-temperature liquid, and the material that is both corrosion resistant and low-temperature resistant for manufacturing the second container 200 can effectively increase the service life of the second container 200. It can be understood that the manufacturing material of the first container 100 is stainless steel or aluminum alloy or other materials with both corrosion resistance and weather resistance, and the manufacturing material of the second container 200 is stainless steel or nickel alloy or other materials with both corrosion resistance and low-temperature resistance.

[0035] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0036] Of course, the present application is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An adiabatic cryogenic storage device, characterized by, The utility model relates to a kind of liquid level control system, including: First container (100); Second container (200) are provided with two, two The second container (200) is arranged inside the first container (100), two The second container (200) is coaxially arranged with the first container (100), the first container (100) and the second container (200) between being provided with heat insulation space (210), the heat insulation space (210) is used to insulate the heat conduction between the first container (100) and the second container (200); The second container (200) is provided with liquid inlet valve (220) and liquid outlet valve (230), the liquid inlet valve (220) is used to control liquid to enter the second container (200), the liquid outlet valve (230) is used to control liquid to discharge the second container (200).

2. A thermally insulated cryogenic storage device according to claim 1, wherein, The first container (100) is provided with vacuum gauge (110) and vacuum valve (120), the vacuum gauge (110) and the vacuum valve (120) are connected in parallel and communicated in the heat insulation space (210).

3. A thermally insulated cryogenic storage device according to claim 1, wherein, The second container (200) is provided with booster system (300), and the booster system (300) is used to pressurize the liquid inside the second container (200).

4. A thermally insulated cryogenic storage device according to claim 3, wherein, The booster system (300) includes inlet valve (310), outlet valve (320), cut-off valve (330) and booster (340), the inlet valve (310), the outlet valve (320), the cut-off valve (330) and the booster (340) are sequentially communicated to form a circuit, the cut-off valve (330) is set as normally closed, and the booster (340) is used to pressurize the liquid inside the second container (200).

5. A thermally insulated cryogenic storage device according to claim 4, wherein, First safety valve (350) and first root valve (360) are sequentially arranged between the booster (340) and the cut-off valve (330), one end of the first root valve (360) is communicated between the booster (340) and the cut-off valve (330) pipeline, the other end of the first root valve (360) is communicated one end of the first safety valve (350), and the other end of the first safety valve (350) is communicated outside.

6. A thermally insulated cryogenic storage device according to claim 1, wherein, The second container (200) is provided with liquid level detection system (400), and the liquid level detection system (400) is used to detect the position of liquid in the second container (200).

7. A thermally insulated cryogenic storage device according to claim 6, wherein, The liquid level detection system (400) comprises a first liquid level gauge valve (410), a second liquid level gauge valve (420), a differential pressure transmitter (430), a first liquid level gauge (440) and a second liquid level gauge (450), one end of the first liquid level gauge valve (410) is communicated with the second container (200), the other end of the first liquid level gauge valve (410) is communicated with the first liquid level gauge (440), one end of the second liquid level gauge valve (420) is communicated with the second container (200), the other end of the second liquid level gauge valve (420) is communicated with the second liquid level gauge (450), the differential pressure transmitter (430) is arranged between the first liquid level gauge (440) and the second liquid level gauge (450), one end of the differential pressure transmitter (430) is communicated with the first liquid level gauge (440), the other end of the differential pressure transmitter (430) is communicated with the second liquid level gauge (450).

8. A thermally insulated cryogenic storage device according to claim 7, wherein, The liquid level detection system (400) further comprises a third liquid level gauge valve (460) and a pressure transmitter (470), one end of the third liquid level gauge valve (460) is communicated with the second container (200), the other end of the third liquid level gauge valve (460) is communicated with the pressure transmitter (470).

9. A thermally insulated cryogenic storage device according to claim 1, wherein, The first container (100) is provided with a second safety valve (130) and a second valve (140), one end of the second valve (140) is communicated with the first container (100), the other end of the second valve (140) is communicated with one end of the second safety valve (130), the other end of the second safety valve (130) is communicated with the outside.

10. A thermally insulated cryogenic storage device according to claim 1, wherein, The first container (100) is made of corrosion-resistant and weather-resistant material, and the second container (200) is made of corrosion-resistant and low-temperature-resistant material.

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