Helium low-temperature purification device

Abstract

The utility model relates to the technical field of helium production, in particular to a helium low-temperature purification device. The low-temperature purification device comprises a purification barrel, an air inlet pump and a recycling box are connected to the side portion of the lower end of the purification barrel, a helium storage tank is connected to the side portion of the upper end of the purification barrel, a refrigeration pipe is arranged in the purification barrel and connected with a refrigeration system, and a piston capable of moving up and down is slidably connected to the interior of the purification barrel. And an air pressure sensor and a temperature sensor are also mounted in the purification barrel. During use, air pressure in the purification barrel is increased, condensation of impurity gas is facilitated, and the purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of helium production, and in particular to a helium low-temperature purification device. Background Art

[0002] In the field of helium production, helium needs to be purified at low temperature. Since helium has a low boiling point, and the impurity gas in helium has a high boiling point, it will condense into liquid, thereby separating helium from the impurity gas. The existing helium low temperature purification device includes a purification barrel to cool the helium in the purification barrel.

[0003] The above technical solution has the following disadvantages: After the impurity gas condenses, the gas pressure in the purification barrel will drop, resulting in a decrease in the boiling point of the impurity gas and a reduction in the condensation efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a helium low-temperature purification device to improve the purification efficiency in view of the above problems.

[0005] To achieve the above-mentioned purpose, the utility model discloses a low-temperature helium purification device, which includes a purification barrel, an air intake pump and a recovery box are connected to the lower side of the purification barrel, a helium storage tank is connected to the upper side of the purification barrel, a refrigeration pipe is arranged inside the purification barrel, the refrigeration pipe is connected to a refrigeration system, a piston that can move up and down is slidably connected inside the purification barrel, and also includes a piston driving device for driving the piston to move, and an air pressure sensor and a temperature sensor are also installed in the purification barrel.

[0006] When in use, the intake pump pressurizes the crude helium and sends it into the purification barrel. The refrigeration pipe reduces the temperature in the purification barrel. As the temperature decreases, the impurity gas in the crude helium condenses. The condensation of the impurity gas causes the pressure in the purification barrel to decrease. At this time, the piston drive device is started to drive the plug downward to increase the pressure in the purification barrel, which is conducive to the condensation of the impurity gas and improves the purification efficiency. After the purification is completed, the recovery box is started, the liquefied impurity gas enters the recovery box, and the helium storage tank is started, and the purified refined helium enters the helium storage tank.

[0007] Preferably, the piston driving device comprises a vertically arranged oil cylinder, a lifting frame is installed on the top rod of the oil cylinder, a connecting column capable of passing through the upper side wall of the purification barrel is connected to the lifting frame, and the piston is connected to the lower end of the connecting column.

[0008] When in use, the lifting frame is driven up and down by the oil cylinder, and the lifting frame drives the piston to move up and down through the connecting column.

[0009] Preferably, it also includes a base, the purification barrel is installed on the base, and the oil cylinder is installed on the base.

[0010] This structure facilitates the installation and use of the oil cylinder.

[0011] Preferably, there are two oil cylinders, which are respectively located on both sides of the purification barrel.

[0012] When in use, the two oil cylinders drive the lifting frame to move up and down, and the lifting frame drives the piston to move up and down through the connecting column, and the movement is smooth.

[0013] Preferably, a plurality of guide posts are mounted on the base, and a guide sleeve that can cooperate with the guide posts is mounted on the lifting frame.

[0014] When in use, the lifting frame moves smoothly.

[0015] Preferably, the number of the guide pillars is four, and the four guide pillars are arranged in one-to-one correspondence with the four corners of the base.

[0016] When in use, the lifting frame moves smoothly.

[0017] Preferably, the purification barrel is cylindrical in shape.

[0018] When in use, the purification barrel has strong pressure bearing capacity and is easy to use.

[0019] An air inlet pipe is connected between the purification barrel and the air inlet pump; a recovery pipe is connected between the purification barrel and the recovery box, and an air outlet pipe is connected between the purification barrel and the helium storage tank; a refrigerant delivery pipe is connected between the refrigeration pipe and the refrigeration system.

[0020] Easy to use.

[0021] In summary, the beneficial effects of the utility model are as follows: when in use, the air intake pump pressurizes the crude helium and sends it into the purification barrel, the refrigeration pipe reduces the temperature in the purification barrel, and as the temperature decreases, the impurity gas in the crude helium condenses, and the impurity gas condenses, causing the air pressure in the purification barrel to decrease. At this time, the piston drive device is started to drive the plug downward to increase the air pressure in the purification barrel, which is conducive to the condensation of the impurity gas and improves the purification efficiency. After the purification is completed, the recovery box is started, the liquefied impurity gas enters the recovery box, the helium storage tank is started, and the purified refined helium enters the helium storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a helium low-temperature purification device of the utility model;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of a purification barrel in a helium low-temperature purification device of the utility model;

[0024] Figure 3 It is a side view structural schematic diagram of a purification barrel in a helium low-temperature purification device of the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the internal structure of a purification barrel in a helium low-temperature purification device.

[0026] In the figure: 1. base; 2. purification barrel; 3. refrigeration system; 4. refrigerant delivery pipe; 5. air intake pump; 6. air intake pipe; 7. recovery box; 8. recovery pipe; 9. helium storage tank; 10. air outlet pipe; 11. guide column; 12. lifting frame; 13. oil cylinder; 14. connecting column; 15. guide sleeve; 16. refrigeration pipe; 17. piston. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0032] like Figures 1 to 4As shown, a helium low-temperature purification device includes a purification barrel 2, the lower end side of the purification barrel 2 is connected to an air intake pump 5 and a recovery box 7, the upper end side of the purification barrel 2 is connected to a helium storage tank 9, a refrigeration pipe 16 is arranged inside the purification barrel 2, the refrigeration pipe 16 is connected to a refrigeration system 3, a piston 17 that can move up and down is slidably connected inside the purification barrel 2, and also includes a piston driving device for driving the piston 17 to move, and an air pressure sensor and a temperature sensor are also installed in the purification barrel 2.

[0033] When in use, the air intake pump 5 pressurizes the crude helium and sends it into the purification barrel 2. The refrigeration pipe 16 reduces the temperature in the purification barrel 2. As the temperature decreases, the impurity gas in the crude helium condenses. The impurity gas condenses, causing the air pressure in the purification barrel 2 to decrease. At this time, the piston drive device is started to drive the plug 17 downward to increase the air pressure in the purification barrel 2, which is conducive to the condensation of the impurity gas and improves the purification efficiency. After the purification is completed, the recovery box 7 is started, the liquefied impurity gas enters the recovery box 7, and the helium storage tank 9 is started, and the purified refined helium enters the helium storage tank 9.

[0034] like Figure 2 As shown, the piston drive device includes a vertically arranged oil cylinder 13, a lifting frame 12 is installed on the top rod of the oil cylinder 13, and a connecting column 14 that can pass through the upper side wall of the purification barrel 2 is connected to the lifting frame 12, and a piston 17 is connected to the lower end of the connecting column 14.

[0035] When in use, the lifting frame 12 is driven to move up and down by the oil cylinder 13, and the lifting frame 12 drives the piston 17 to move up and down through the connecting column 14.

[0036] It also includes a base 1 , a purification barrel 2 is mounted on the base 1 , and an oil cylinder 13 is mounted on the base 1 .

[0037] This structure facilitates the installation and use of the oil cylinder 13.

[0038] There are two oil cylinders 13 , which are respectively located on both sides of the purification barrel 2 .

[0039] When in use, the two oil cylinders 13 drive the lifting frame 12 to move up and down, and the lifting frame 12 drives the piston 17 to move up and down through the connecting column 14, and the movement is smooth.

[0040] A plurality of guide posts 11 are mounted on the base 1 , and a guide sleeve 15 that can cooperate with the guide posts 11 is mounted on the lifting frame 12 .

[0041] When in use, the lifting frame 12 moves smoothly.

[0042] There are four guide pillars 11 , and the four guide pillars 11 are arranged corresponding to the four corners of the base 1 one by one.

[0043] When in use, the lifting frame 12 moves smoothly.

[0044] The purification barrel 2 is cylindrical in shape.

[0045] When in use, the purification barrel 2 has a strong pressure bearing capacity and is convenient to use.

[0046] An air inlet pipe 6 is connected between the purification barrel 2 and the air inlet pump 5; a recovery pipe 8 is connected between the purification barrel 2 and the recovery box 7, and an air outlet pipe 10 is connected between the purification barrel 2 and the helium storage tank 9; a refrigerant delivery pipe 4 is connected between the refrigeration pipe 16 and the refrigeration system 3.

[0047] Easy to use.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A helium low temperature purification device, comprising a purification barrel (2), characterized in that: The lower side of the purification barrel (2) is connected to an air intake pump (5) and a recovery box (7); the upper side of the purification barrel (2) is connected to a helium storage tank (9); a refrigeration pipe (16) is arranged inside the purification barrel (2); the refrigeration pipe (16) is connected to a refrigeration system (3); a piston (17) capable of moving up and down is slidably connected inside the purification barrel (2); a piston driving device for driving the piston (17) to move is also included; and an air pressure sensor and a temperature sensor are also installed inside the purification barrel (2).

2. The helium low temperature purification device according to claim 1, characterized in that: The piston drive device comprises a vertically arranged oil cylinder (13), a lifting frame (12) is mounted on the top rod of the oil cylinder (13), a connecting column (14) capable of passing through the upper side wall of the purification barrel (2) is connected to the lifting frame (12), and a piston (17) is connected to the lower end of the connecting column (14).

3. The helium low temperature purification device according to claim 2, characterized in that: It also includes a base (1), a purification barrel (2) is mounted on the base (1), and an oil cylinder (13) is mounted on the base (1).

4. The helium low temperature purification device according to claim 3, characterized in that: The number of the oil cylinders (13) is two, and the two oil cylinders (13) are respectively located on both sides of the purification barrel (2).

5. The helium low temperature purification device according to claim 3, characterized in that: A plurality of guide posts (11) are mounted on the base (1), and a guide sleeve (15) capable of matching with the guide posts (11) is mounted on the lifting frame (12).

6. The helium low temperature purification device according to claim 5, characterized in that: The number of guide posts (11) is four, and the four guide posts (11) are arranged in one-to-one correspondence with the four corners of the base (1).

7. The helium cryogenic purification device according to any one of claims 1 to 6, characterized in that: The purification barrel (2) is cylindrical in shape.

8. The helium cryogenic purification device according to any one of claims 1 to 6, characterized in that: An air intake pipe (6) is connected between the purification barrel (2) and the air intake pump (5); a recovery pipe (8) is connected between the purification barrel (2) and the recovery box (7); an air outlet pipe (10) is connected between the purification barrel (2) and the helium storage tank (9); and a refrigerant delivery pipe (4) is connected between the refrigeration pipe (16) and the refrigeration system (3).

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