Pressurizing mechanism of low-temperature liquid storage tank

Abstract

The utility model provides a low-temperature liquid storage tank pressurization mechanism which comprises a storage tank, a liquid output pipeline, a gas input pipeline and a gasification device arranged between the liquid output pipeline and the gas input pipeline in a communicated mode are arranged on the storage tank, and a liquid pumping device used for pumping out low-temperature liquid is further arranged on the liquid output pipeline. The gas input pipeline is further provided with a gas conveying device used for filling gas into the storage tank, and part of low-temperature liquid in the storage tank flows out of the liquid output pipeline, is gasified through the gasification device and then is filled into the storage tank through the gas input pipeline to be pressurized. Part of low-temperature liquid in the storage tank is pumped out by the liquid pumping device and flows into the gasification device through the liquid output pipeline to be gasified, and then the gasified gas is filled into the storage tank through the gas input pipeline by the gas transmission device to be pressurized, so that the liquid in the storage tank can be normally output, external gas does not need to be additionally filled, and the purity of the low-temperature liquid is ensured; the practicability is convenient.

Description

Technical Field

[0001] The utility model relates to the field of cryogenic liquid storage tanks, in particular to a pressurizing mechanism for cryogenic liquid storage tanks. Background Art

[0002] At present, in the storage technology of cryogenic liquids (such as liquid nitrogen), storage tanks are usually used for storage. The cryogenic liquid is filled into the storage tank, and then the cryogenic liquid is output from the storage tank for use when needed, which is very convenient.

[0003] However, the existing storage tanks still have the following defects when outputting cryogenic liquids: since most storage tanks are in a sealed state, after a part of the cryogenic liquid (such as liquid nitrogen) in the storage tank flows out, the pressure in the storage tank will be insufficient, and the cryogenic liquid cannot be pressed out. The liquid in the storage tank cannot be output and cannot be used normally, which is very troublesome. Utility Model Content

[0004] In order to solve the above problems, the present technical solution provides a low-temperature liquid storage tank pressurization mechanism.

[0005] To achieve the above purpose, the technical solution is as follows:

[0006] A low-temperature liquid storage tank pressurizing mechanism comprises a storage tank, wherein the storage tank is provided with a liquid output pipeline and a gas input pipeline, and a gasification device connected between the liquid output pipeline and the gas input pipeline, the liquid output pipeline is also provided with a liquid extraction device for extracting the low-temperature liquid, and the gas input pipeline is also provided with a gas transmission device for flushing gas into the storage tank, wherein part of the low-temperature liquid in the storage tank flows out from the liquid output pipeline, is gasified by the gasification device, and then is filled into the storage tank from the gas input pipeline for pressurization.

[0007] In the above-mentioned low-temperature liquid storage tank pressurizing mechanism, the gasification device includes a mounting frame arranged at the lower end of the storage tank, and a U-shaped heat exchange tube group installed on the mounting frame, and the U-shaped heat exchange tube group is also provided with an input end and an output end, the input end is connected to the liquid output pipeline, and the output end is connected to the gas input pipeline.

[0008] In the above-mentioned low-temperature liquid storage tank pressurization mechanism, the U-shaped heat exchange tube group is arranged in upper and lower double layers, the input end is arranged at one end of the upper layer, and the output end is arranged at one end of the lower layer.

[0009] In the above-mentioned low-temperature liquid storage tank pressurizing mechanism, the peripheral side of the tube wall of the U-shaped heat exchange tube group is also wrapped with heat exchange material.

[0010] In the above-mentioned low-temperature liquid storage tank pressurizing mechanism, heat exchange plates are further provided at the upper and lower ends of the U-shaped heat exchange tube group, and the circumferential sides of the two heat exchange plates are connected to each other to sandwich the U-shaped heat exchange tube group therebetween.

[0011] In the above-mentioned low-temperature liquid storage tank pressurizing mechanism, the heat exchange plate is also provided with an air avoidance groove capable of accommodating the U-shaped heat exchange tube group.

[0012] In the cryogenic liquid storage tank pressurizing mechanism as described above, a protective frame is further provided around the U-shaped heat exchange tube group.

[0013] In a low-temperature liquid storage tank pressurizing mechanism as described above, the protection frame includes a first protection plate arranged at both ends of the U-shaped heat exchange tube group in the length direction, and a second protection plate arranged at both ends of the U-shaped heat exchange tube group in the width direction, and the two first protection plates and the two second protection plates are interconnected to surround the U-shaped heat exchange tube group.

[0014] In the above-mentioned low-temperature liquid storage tank pressurization mechanism, the liquid pumping device is a liquid pump.

[0015] In the above-mentioned low-temperature liquid storage tank pressurization mechanism, the gas delivery device is an air pump.

[0016] The beneficial effects of this application are:

[0017] The utility model provides a low-temperature liquid storage tank pressurizing mechanism with a simple structure. A liquid pumping device extracts part of the low-temperature liquid in the storage tank and flows it into a gasification device through a liquid output pipeline for gasification. Then a gas delivery device fills the gasified gas into the storage tank through a gas input pipeline for pressurization, so that the liquid in the storage tank can be normally outputted without additionally filling in external gas, thereby ensuring the purity of the low-temperature liquid. The utility model is practical and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0019] Figure 1 This is one of the structural schematic diagrams of a low-temperature liquid storage tank pressurization mechanism in an embodiment of the present application;

[0020] Figure 2 This is the second structural schematic diagram of a low-temperature liquid storage tank pressurization mechanism in an embodiment of the present application (the storage tank is omitted);

[0021] Figure 3 It is a structural exploded diagram of a low-temperature liquid storage tank pressurization mechanism according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] The present disclosure provides the following description with reference to the accompanying drawings to assist in a comprehensive understanding of the various embodiments of the present disclosure as defined by the claims and their equivalents. The description includes various specific details to assist in understanding, but these details should be considered as exemplary only. Therefore, it will be appreciated by those of ordinary skill in the art that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for clarity and conciseness, the description of the disclosed functions and configurations may be omitted.

[0023] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be clear to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration only, and is not intended to limit the present disclosure as defined by the attached claims and their equivalents.

[0024] The terms "having", "may have", "include" or "may include" used in various embodiments of the present disclosure indicate the existence of the corresponding functions, operations, elements, etc. disclosed, but do not limit the additional one or more functions, operations, elements, etc. In addition, it should be understood that the terms "including" or "having" used in various embodiments of the present disclosure are intended to indicate the existence of the features, numbers, operations, elements, components, or combinations thereof described in the specification, but do not exclude the existence or addition of one or more other features, numbers, operations, elements, components, or combinations thereof.

[0025] It will be understood that when an element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] A low-temperature liquid storage tank pressurization mechanism includes a storage tank 100, characterized in that: the storage tank 100 is provided with a liquid output pipeline 1 and a gas input pipeline 2, and a vaporization device 3 connected between the liquid output pipeline 1 and the gas input pipeline 2, the liquid output pipeline 1 is also provided with a liquid extraction device 4 for extracting the low-temperature liquid, and the gas input pipeline 2 is also provided with a gas transmission device 5 for flushing gas into the storage tank 100, wherein part of the low-temperature liquid in the storage tank 100 flows out from the liquid output pipeline 1, is vaporized by the vaporization device 3, and then is filled into the storage tank 100 from the gas input pipeline 2 for pressurization.

[0028] The utility model provides a low-temperature liquid storage tank pressurizing mechanism with a simple structure. A liquid pumping device 4 extracts part of the low-temperature liquid in the storage tank 100 and flows the liquid into a gasification device 3 through a liquid output pipe 1 for gasification. Then a gas delivery device 5 fills the gasified gas into the storage tank 100 through a gas input pipe 2 for pressurization, so that the liquid in the storage tank 100 can be normally output without additionally filling in external gas, thereby ensuring the purity of the low-temperature liquid. The utility model is practical and convenient.

[0029] Furthermore, as a preferred embodiment of the present invention but not a limitation, the gasification device 3 includes a mounting frame 31 arranged at the lower end of the storage tank 100, and a U-shaped heat exchange tube group 32 installed on the mounting frame 31, and the U-shaped heat exchange tube group 32 is also provided with an input end 33 and an output end 34, the input end 33 is connected to the liquid output pipeline 1, and the output end 34 is connected to the gas input pipeline 2.

[0030] The cryogenic liquid exchanges heat with the air through the U-shaped heat exchange tube group 32, absorbs heat and vaporizes, which is practical and convenient.

[0031] Further, as a preferred implementation of this solution but not limiting, the U-shaped heat exchange tube group 32 is arranged in two layers, the input end 33 is arranged at one end of the upper layer, and the output end 34 is arranged at one end of the lower layer. By arranging the U-shaped heat exchange tube group 32 in two layers, space is saved while increasing the heat exchange path of the cryogenic liquid, further improving the heat exchange degree and ensuring the gasification efficiency.

[0032] Furthermore, as a preferred implementation of this solution but not a limitation, the U-shaped heat exchange tube group 32 is also wrapped with heat exchange material around the tube wall. By providing the heat exchange material, the efficiency of heat exchange is increased, the heat exchange efficiency is further improved, and the gasification efficiency is guaranteed.

[0033] Further, as a preferred implementation of the present solution but not a limitation, heat exchange plates 35 are further provided at the upper and lower ends of the U-shaped heat exchange tube group 32, and the circumferential sides of the two heat exchange plates 35 are connected to each other to sandwich the U-shaped heat exchange tube group 32 therebetween. By adding heat exchange plates 35 for heat exchange, the efficiency of heat exchange is increased, the heat exchange efficiency is further improved, and the gasification efficiency is ensured. At the same time, the heat exchange plates 35 can also protect the U-shaped heat exchange tube group 32, which is practical and convenient.

[0034] Specifically, the heat exchange plate 35 is further provided with an air avoidance groove 350 capable of accommodating the U-shaped heat exchange tube group 32. The contact area between the U-shaped heat exchange tube group 32 and the heat exchange plate 35 is increased, the efficiency of heat exchange is increased, the heat exchange efficiency is further improved, and the gasification efficiency is ensured.

[0035] Furthermore, as a preferred implementation of the present solution but not a limitation, a protective frame 6 is further provided around the U-shaped heat exchange tube group 32 .

[0036] Specifically, the protection frame 6 includes a first protection plate 61 disposed at both ends of the U-shaped heat exchange tube group 32 in the length direction, and a second protection plate 62 disposed at both ends of the U-shaped heat exchange tube group 32 in the width direction, and the two first protection plates 61 and the two second protection plates 62 are connected to each other to surround the U-shaped heat exchange tube group 32, so as to protect the U-shaped heat exchange tube group 32, which is practical and convenient.

[0037] Further, as a preferred implementation of the present solution but not limiting, the liquid pumping device 4 is a liquid pump.

[0038] Furthermore, as a preferred implementation of the present solution but not limiting, the gas delivery device 5 is an air pump.

[0039] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A cryogenic liquid storage tank pressurization mechanism, comprising a storage tank (100), characterized in that: The storage tank (100) is provided with a liquid output pipeline (1) and a gas input pipeline (2), and a gasification device (3) connected between the liquid output pipeline (1) and the gas input pipeline (2); the liquid output pipeline (1) is also provided with a liquid extraction device (4) for extracting low-temperature liquid; the gas input pipeline (2) is also provided with a gas delivery device (5) for flushing gas into the storage tank (100); part of the low-temperature liquid in the storage tank (100) flows out from the liquid output pipeline (1), is gasified by the gasification device (3), and then is filled into the storage tank (100) from the gas input pipeline (2) for pressurization.

2. A cryogenic liquid storage tank pressurizing mechanism according to claim 1, characterized in that: The gasification device (3) comprises a mounting frame (31) arranged at the lower end of the storage tank (100), and a U-shaped heat exchange tube group (32) mounted on the mounting frame (31); the U-shaped heat exchange tube group (32) is also provided with an input end (33) and an output end (34); the input end (33) is connected to the liquid output pipeline (1), and the output end (34) is connected to the gas input pipeline (2).

3. A cryogenic liquid storage tank pressurizing mechanism according to claim 2, characterized in that: The U-shaped heat exchange tube group (32) is arranged in two layers, upper and lower, with the input end (33) being arranged at one end of the upper layer and the output end (34) being arranged at one end of the lower layer.

4. A cryogenic liquid storage tank pressurizing mechanism according to claim 2, characterized in that: The U-shaped heat exchange tube group (32) is also wrapped with heat exchange material on the circumference of the tube wall.

5. A cryogenic liquid storage tank pressurizing mechanism according to claim 2, characterized in that: Heat exchange plates (35) are also provided at the upper and lower ends of the U-shaped heat exchange tube group (32), and the circumferential sides of the two heat exchange plates (35) are connected to each other so as to sandwich the U-shaped heat exchange tube group (32) therebetween.

6. A cryogenic liquid storage tank pressurizing mechanism according to claim 5, characterized in that: The heat exchange plate (35) is also provided with a void avoidance groove (350) capable of accommodating the U-shaped heat exchange tube group (32).

7. A cryogenic liquid storage tank pressurizing mechanism according to claim 2, characterized in that: A protective frame (6) is also provided around the U-shaped heat exchange tube group (32).

8. A cryogenic liquid storage tank pressurization mechanism according to claim 7, characterized in that: The protection frame (6) comprises first protection plates (61) arranged at both ends of the U-shaped heat exchange tube group (32) in the length direction, and second protection plates (62) arranged at both ends of the U-shaped heat exchange tube group (32) in the width direction, and the two first protection plates (61) and the two second protection plates (62) are connected to each other to surround the U-shaped heat exchange tube group (32).

9. A cryogenic liquid storage tank pressurizing mechanism according to claim 1, characterized in that: The liquid pumping device (4) is a liquid pump.

10. A cryogenic liquid storage tank pressurizing mechanism according to claim 1, characterized in that: The gas delivery device (5) is an air pump.

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