Helium compressor

Abstract

The invention provides a helium compressor, and relates to the technical field of helium compressors. A helium compressor comprises a vacuum containing cabin, an air compression assembly and a refrigeration assembly. The vacuum containing cabin is filled with helium. The air compression assembly is located in the vacuum containing cabin and externally connected with a helium input and output pipeline. The refrigeration assembly is located in the vacuum containing cabin, circulating airflow is formed in the vacuum containing cabin, the air compression assembly is cooled, a traditional air compression assembly is used as a pump machine of the helium compressor, on one hand, cost is greatly reduced, on the other hand, pollution of pump oil is avoided, and the service life of the helium compressor is prolonged. The air compression assembly is placed in the vacuum environment and is filled with helium for protection, the problem of air leakage pollution of a helium compressor is solved, meanwhile, the refrigeration assembly is arranged in the vacuum containing cabin, and the problem of heating of the air compression assembly is solved.

Description

Technical Field

[0001] The present application relates to the technical field of helium compressors, and in particular to a helium compressor. Background Art

[0002] Helium compressors are widely used in helium storage, helium recovery, helium liquefaction and other fields. Traditional helium compressors usually use highly sealed turbo compressors. On the one hand, the compressors are usually lubricated with oil pump oil, which inevitably causes helium contamination. On the other hand, helium molecules are small in size and are very easy to leak, which is also easy to cause pollution during the compression process. Most industrial helium has extremely high requirements for purity, usually requiring a purity of 99.99%. System leakage and oil contamination of compressed helium put forward high requirements on the design of helium compressors and greatly increase the cost of the system itself. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a helium compressor, comprising a vacuum containment chamber, an air compression component and a refrigeration component, wherein the vacuum containment chamber is filled with helium; the air compression component is located in the vacuum containment chamber, and the air compression component is externally connected to a helium input and output pipeline; the refrigeration component is located in the vacuum containment chamber, and a circulating airflow is formed in the vacuum containment chamber to cool the air compression component.

[0004] Preferably, the vacuum containment chamber is connected to a pressure gauge and a helium injection port, and the helium injection port is externally connected to a helium injection source.

[0005] Preferably, the vacuum containment chamber is also connected to a helium inlet and outlet.

[0006] Preferably, the air compression assembly includes a high-pressure storage tank fixedly connected to the bottom of the vacuum containment chamber, and the high-pressure storage tank is provided with a compression pump and a pressure gauge.

[0007] Preferably, the pipeline for the external helium input and output of the air compression assembly is a helium delivery pipeline connected between the high-pressure storage tank and the helium inlet and outlet.

[0008] Preferably, the refrigeration component includes a heat exchanger and a fan group, the heat exchanger is fixedly connected to the vacuum containment chamber and connected to an external cooling source, and the fan group is arranged in the vacuum containment chamber to allow helium to flow.

[0009] Preferably, the heat exchanger is a solenoid heat exchanger.

[0010] Preferably, the fan group includes a top fan and a bottom fan, the top fan is arranged on the top side of the heat exchanger, and the bottom fan is arranged on the bottom side of the heat exchanger.

[0011] Preferably, the top fan and the bottom fan are arranged diagonally in the vacuum containment chamber, wherein the bottom fan is located on a side of the air compression assembly away from the top fan.

[0012] Preferably, the air inlet end and the air outlet end of the top fan are arranged opposite to the air inlet end and the air outlet end of the bottom fan.

[0013] The beneficial effects of the present invention are as follows: using a traditional air compression component as a pump for a helium compressor greatly reduces costs on the one hand, and avoids pump oil contamination on the other hand; placing the air compression component in a vacuum environment and filling it with helium for protection solves the problem of helium compressor leakage contamination; and configuring a refrigeration component in the vacuum containment chamber solves the problem of heat generation of the air compression component.

[0014] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a schematic diagram of the overall structure of a helium compressor according to an embodiment of the present application;

[0017] Figure 2 It is a top view of the partial structure of a helium compressor according to an embodiment of the present application.

[0018] Icons: 1. Vacuum containment chamber; 2. Compression pump; 3. Pressure gauge; 4. High-pressure storage tank; 5. Heat exchanger; 6. Fan group; 61. Top fan; 62. Bottom fan; 7. Helium delivery pipeline; 8. Pressure gauge; 9. Helium inlet and outlet; 10. Helium injection port. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0020] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] like Figure 1 As shown, a helium compressor according to an embodiment of the present application includes a vacuum chamber 1, an air compression component and a refrigeration component. The vacuum chamber 1 is filled with helium. It should be noted that the pressure of the helium in the vacuum chamber 1 is slightly greater than the external air pressure to prevent air from infiltrating into the vacuum chamber 1 and reducing the protective effect of helium on the air compression component.

[0022] The air compression component is located in the vacuum containment chamber 1, and is externally connected to a helium input and output pipeline to pressurize the helium and circulate it.

[0023] The refrigeration component is located in the vacuum containment chamber 1, and forms a circulating airflow in the vacuum containment chamber 1 to cool the air compression component and avoid local overheating of the air compression component during the core process.

[0024] Specifically, the vacuum containment chamber 1 is connected to a pressure gauge 8 and a helium injection port 10, and the helium injection port 10 is externally connected to a helium injection source. It can be understood that the pressure gauge 8 facilitates knowing the changes in the air pressure value of the helium inside the vacuum containment chamber 1, so as to determine whether to continue to inject helium at the helium injection port 10.

[0025] The vacuum containment chamber 1 is also connected with a helium inlet and outlet 9, so as to facilitate the air compression component to circulate and transport the helium.

[0026] Specifically, the air compression component includes a high-pressure storage tank 4 fixedly connected to the bottom of the vacuum containment chamber 1, and a compression pump 2 and a pressure gauge 3 are provided on the high-pressure storage tank 4. The external helium input and output pipeline of the air compression component is a helium delivery pipeline 7 connected between the high-pressure storage tank 4 and the helium inlet and outlet 9. It can be seen that the helium in the high-pressure storage tank 4 can be pressurized by the compression pump 2, and the specific pressure value of the helium in the high-pressure storage tank 4 can be easily known through the pressure gauge 3, and then the helium that reaches the predetermined pressure value is circulated through the helium delivery pipeline 7 and the helium inlet and outlet 9 to form a circulation state with external equipment.

[0027] like Figure 1 and Figure 2As shown, the refrigeration component includes a heat exchanger 5 and a fan group 6. The heat exchanger 5 is fixedly connected to the vacuum containment chamber 1 and is connected to an external cooling source. In a specific embodiment of the present application, the external cooling source can be low-temperature circulating water or liquid nitrogen or other low-temperature media to form a circulation flow in the heat exchanger 5 to provide a cold source to the vacuum containment chamber 1. The heat exchanger 5 is a solenoid heat exchanger. It can be understood that the structural setting of the helical heat exchanger can increase the contact area between the heat exchanger 5 and the vacuum containment chamber 1, thereby improving the heat exchange effect.

[0028] The fan group 6 is disposed in the vacuum containment chamber 1 to allow the helium in the vacuum containment chamber 1 to flow.

[0029] Specifically, the fan group 6 includes a top fan 61 and a bottom fan 62, the top fan 61 is arranged on the top side of the heat exchanger 5, and the bottom fan 62 is arranged on the bottom side of the heat exchanger 5. It should be noted that the top fan 61 and the bottom fan 62 are diagonally arranged in the vacuum containment chamber 1, wherein the bottom fan 62 is located on the side of the air compression component (specifically the high-pressure storage tank 4) away from the top fan 61.

[0030] It should be further explained that the air inlet end and the air outlet end of the top fan 61 are arranged opposite to the air inlet end and the air outlet end of the bottom fan 62 .

[0031] It should be noted that the air inlet end of the top fan 61 is on its top side, and the air outlet end is on its bottom side; the air inlet end of the bottom fan 62 is on its bottom side, and the air outlet end is on its top side.

[0032] Thus, it can be understood that, in actual use, the helium in the high-pressure storage tank 4 can be pressurized by the compression pump 2, and the specific pressure value of the helium in the high-pressure storage tank 4 can be known through the barometer 3, and then the helium reaching the predetermined pressure value is circulated through the helium delivery pipeline 7 and the helium inlet and outlet 9 with the external equipment, and at the same time, low-temperature circulating water or liquid nitrogen or other low-temperature media is passed into the heat exchanger 5, and the refrigerant is circulated between the heat exchanger 5 and the refrigeration equipment through the external refrigeration equipment, so as to achieve the purpose of continuously delivering the cold source to the inside of the vacuum containment chamber 1. At the same time, the top fan 61 and the bottom fan 62 are started. Due to the design of the inlet and outlet directions of the top fan 61 and the bottom fan 62, and the diagonal design of the two fans in the vacuum containment chamber 1, and they are respectively located on the top side of the heat exchanger 5 and the side of the high-pressure storage tank 4 away from the heat exchanger 5 (such as Figure 1 and Figure 2 As shown in FIG. 1 , it can be seen that after the two fans are started, a circulating airflow will be formed in the vacuum containment chamber 1 (as shown in FIG. Figure 1As shown), firstly, the flow of helium in the vacuum containment chamber 1 is utilized to carry and transport the cold source at the heat exchanger 5 toward the high-pressure storage tank 4. Then, after the airflow passes through the high-pressure storage tank 4 and carries the heat, it is transported toward the top fan 61 by the bottom fan 62. When the airflow carrying the heat passes through the heat exchanger 5, it forms a heat exchange with the refrigerant inside the heat exchanger 5, and then carries the cold source toward the high-pressure storage tank 4 again, so as to achieve the effect of cooling the air compression component. Secondly, the airflow forms a circulating flow in the vacuum containment chamber 1, which can avoid the formation of airflow dead corners inside the vacuum containment chamber 1, and better enhance the cooling effect on the air compression component. The diagonal arrangement of the two fans greatly reduces the possibility of the airflow forming a dead corner in the vacuum tube containment chamber 1.

[0033] It should be noted that the specific models and specifications of the compression pump 2, high-pressure storage tank 4, heat exchanger 5, top fan 61 and bottom fan 62 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0034] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A helium compressor, characterized in that: include: A vacuum containment chamber (1), wherein the vacuum containment chamber (1) is filled with helium; An air compression component, the air compression component is located in the vacuum containment chamber (1), and the air compression component is externally connected to a pipeline for inputting and outputting helium; A refrigeration component is located in the vacuum containment chamber (1) and forms a circulating airflow in the vacuum containment chamber (1) to cool the air compression component.

2. A helium compressor according to claim 1, characterized in that: The vacuum containment chamber (1) is connected to a pressure gauge (8) and a helium injection port (10), and the helium injection port (10) is externally connected to a helium injection source.

3. A helium compressor according to claim 1, characterized in that: The vacuum containment chamber (1) is also connected to a helium inlet and outlet (9).

4. A helium compressor according to claim 3, characterized in that: The air compression assembly comprises a high-pressure storage tank (4) fixedly connected to the bottom of the vacuum containment chamber (1), and the high-pressure storage tank (4) is provided with a compression pump (2) and a pressure gauge (3).

5. A helium compressor according to claim 4, characterized in that: The pipeline for the external helium input and output of the air compression component is a helium delivery pipeline (7) connected between the high-pressure storage tank (4) and the helium inlet and outlet (9).

6. A helium compressor according to claim 1, characterized in that: The refrigeration component comprises a heat exchanger (5) and a fan group (6); the heat exchanger (5) is fixedly connected to the vacuum containment chamber (1) and is connected to an external refrigeration source; the fan group (6) is arranged in the vacuum containment chamber (1) to allow helium to flow.

7. A helium compressor according to claim 6, characterized in that: The heat exchanger (5) is a solenoid heat exchanger.

8. A helium compressor as claimed in claim 6, characterized in that: The fan group (6) comprises a top fan (61) and a bottom fan (62), wherein the top fan (61) is arranged on the top side of the heat exchanger (5), and the bottom fan (62) is arranged on the bottom side of the heat exchanger (5).

9. A helium compressor according to claim 8, characterized in that: The top fan (61) and the bottom fan (62) are arranged diagonally in the vacuum containment chamber (1), wherein the bottom fan (62) is located on a side of the air compression assembly away from the top fan (61).

10. A helium compressor according to claim 8, characterized in that: The air inlet end and the air outlet end of the top fan (61) are arranged opposite to the air inlet end and the air outlet end of the bottom fan (62).

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