Rapid and safe helium filling device

Abstract

The utility model discloses a rapid and safe helium filling device which comprises a high-purity helium buffer tank and a filling compressor, the high-purity helium buffer tank is connected with the filling compressor, the filling compressor is connected with a fixed tube bundle, the filling compressor is connected with a vacuumizing valve, the filling compressor is connected with a movable tube bundle trolley, and the fixed tube bundle is connected with a loading compressor. The loading compressor is connected with the vacuum pump and the movable tube bundle trolley. The fixed tube bundle is also connected with a vacuumizing valve; the movable tube bundle trolley is further connected with a movable tube bundle trolley vacuumizing valve and a vacuumizing valve. The vacuumizing valve and the movable tube bundle trolley vacuumizing valve are both connected with a vacuum hand valve, and the vacuum hand valve is connected with a vacuum pump. According to the rapid and safe helium filling device, vacuumizing operation of the filling device and the movable tube bundle trolley can be achieved, helium in polluted gas can be recycled, resource waste is avoided, and meanwhile the helium filling quality can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas filling equipment, and particularly relates to a helium rapid and safe filling device. Background Art

[0002] Helium is an extremely light, colorless, odorless, and monoatomic gas. It is the most difficult gas to liquefy among all gases and is a substance that cannot be solidified under standard atmospheric pressure. Helium has a wide range of uses, and 20% of helium is used in magnetic resonance. Because of the low boiling point of helium, almost reaching absolute zero, as long as the superconducting material is placed in liquid helium, it can continuously provide a strong magnetic field to keep the machinery running. Therefore, it is used as a pressurizer for rocket liquid fuel, a shielding gas during smelting and welding, a filling gas for light bulbs, and an oxygen cylinder during submarine operations. Therefore, helium is also called the "blood" of industry.

[0003] The existing helium filling technology realizes the intelligent control of filling pressure and temperature by presetting pressure and temperature and controlling through valves. The degree of manual intervention during the filling process is high and the degree of integration is low. If the optimal parameters are not adopted during helium filling, problems such as long filling time, low efficiency, poor filling quality, and high energy consumption will occur. Therefore, it has high requirements for the skills of operators, which is not conducive to large-scale filling of helium and has a high cost.

[0004] Chinese Patent (Application No.: 202323122655.X, Publication No.: CN 221258546 U, Publication Date: July 2, 2024) discloses a high-purity helium filling system. When in use, high-purity helium from a low-temperature purifier enters the helium inlet buffer tank through a pipeline. The high-pressure helium enters a helium compressor for pressurization. The high-pressure product gas flows out and passes through a filter to the main conveying pipeline. Installing a filter after the helium compressor can prevent the helium entering the pipeline leading to the filling platform after being compressed by the helium compressor from being impure. Helium is filled into a gas cylinder group or a helium long tube group from each branch conveying pipeline. This system can recover and store helium through a helium recovery pipeline, preventing helium from not being recoverable when there is no transport vehicle that needs to be filled with helium and avoiding waste of helium. However, the equipment of this system is complex, including multiple components and numerous pipeline connections, which not only increases the initial construction cost but also improves the difficulty and cost of operation and maintenance. Moreover, the requirement for multiple devices to work together is high, and improper operation is likely to affect efficiency or damage the equipment. In addition, there are problems of mutual interference and difficult fault troubleshooting in multiple branches, and long-term storage may affect the quality of helium. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a helium rapid and safe filling device, which can realize efficient and rapid filling of helium and ensure the filling quality of helium at the same time.

[0006] The technical scheme adopted by the utility model is that a helium fast and safe filling device comprises a high-purity helium buffer tank and a filling compressor, the high-purity helium buffer tank and the filling compressor are connected, the filling compressor is connected to a fixed tube bundle, the filling compressor is connected to a vacuum valve, the filling compressor is connected to a mobile tube bundle vehicle, the fixed tube bundle is connected to a loading compressor, the loading compressor is respectively connected to a vacuum pump and a mobile tube bundle vehicle; the fixed tube bundle is also connected to the vacuum valve; the mobile tube bundle vehicle is also respectively connected to the vacuum valve of the mobile tube bundle vehicle and the vacuum valve; the vacuum valve and the vacuum valve of the mobile tube bundle vehicle are both connected to a vacuum hand valve, and the vacuum hand valve is connected to a vacuum pump.

[0007] The utility model is also characterized in that:

[0008] The fixed tube bundle and the mobile tube bundle vehicle are both connected to the gas chromatograph; sampling valves are provided between the fixed tube bundle, the mobile tube bundle vehicle and the gas chromatograph.

[0009] A pressure relief cut-off valve is provided at the outlet of the fixed tube bundle.

[0010] A shut-off valve and a pressure reducing valve are provided at the inlet of the loading compressor.

[0011] Cut-off valves are arranged at the front and rear ends of the filling compressor, and a circulation control valve is also arranged at the outlet of the filling compressor.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model of the helium fast and safe filling device is equipped with a loading compressor and a filling compressor, and the pre-pressurization, equalization and supercharging processes are realized by program control, which can realize efficient and fast filling of helium and greatly save filling time;

[0014] 2. The helium fast and safe filling device of the utility model can realize online monitoring and control of parameters such as gas quality, pressure, temperature, flow rate, etc., to ensure the quality of helium filling and the safety of the filling process;

[0015] 3. The helium fast and safe filling device of the utility model can realize the vacuum operation of the filling device and the mobile tube bundle vehicle, realize the recovery of helium in the polluted gas, avoid the waste of resources, and at the same time ensure the quality of helium filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model helium fast and safe filling device;

[0017] Figure 2 The utility model is a schematic diagram of the connection between the vacuum pump and the filling compressor in the helium fast and safe filling device.

[0018] In the figure, 1. High-purity helium buffer tank, 2. Filling compressor, 3. Fixed tube bundle, 4. Loading compressor, 5. Vacuum pump, 6. Filling device vacuum valve, 7. Mobile tube bundle vehicle vacuum valve, 8. Vacuum hand valve, 9. Mobile tube bundle vehicle, 10. Gas chromatograph. Detailed implementation mode

[0019] The present utility model will be described in detail below in conjunction with the accompanying drawings and the specific implementation mode.

[0020] Embodiment 1

[0021] The helium rapid and safe filling device of the present utility model, as Figure 1 and Figure 2 shown, includes a high-purity helium buffer tank 1 and a filling compressor 2. The high-purity helium buffer tank 1 is connected to the filling compressor 2. The filling compressor 2 is connected to the fixed tube bundle 3. The filling compressor 2 is connected to the vacuum valve 6. The fixed tube bundle 3 is also connected to the vacuum valve 6. The filling compressor 2 is connected to the mobile tube bundle vehicle 9. The mobile tube bundle vehicle 9 is also respectively connected to the mobile tube bundle vehicle vacuum valve 7 and the vacuum valve 6. Both the vacuum valve 6 and the mobile tube bundle vehicle vacuum valve 7 are connected to the vacuum hand valve 8. The vacuum hand valve 8 is connected to the vacuum pump 5;

[0022] By setting the vacuum pump 5, the fixed tube bundle 3 and the mobile tube bundle vehicle 9 are evacuated before filling, which can effectively remove the internal air, moisture and other impurity gases. In this way, when filling helium, the purity of helium can be guaranteed and the filling quality can be improved.

[0023] Both the fixed tube bundle 3 and the mobile tube bundle vehicle 9 are connected to the gas chromatograph 10. Sampling valves are arranged between the fixed tube bundle 3, the mobile tube bundle vehicle 9 and the gas chromatograph 10. The sampling valve is arranged close to the fixed tube bundle 3. The gas chromatograph 10 can accurately analyze the composition and purity of helium. By setting the sampling valve, helium samples can be conveniently obtained for detection, and the quality of the filled helium can be grasped in time.

[0024] The fixed tube bundle 3 is connected to the loading compressor 4. The loading compressor 4 is respectively connected to the vacuum pump 5 and the mobile tube bundle vehicle 9;

[0025] A pressure relief cut-off valve is arranged at the outlet of the fixed tube bundle 3 to form the inlet of the pressure relief gas return front system;

[0026] When the internal pressure of the fixed tube bundle 3 rises abnormally, for example, due to a fault during the filling process or external factors, the pressure relief cut-off valve can be opened in time for pressure relief. This can prevent serious safety accidents such as rupture and explosion of the fixed tube bundle 3 due to excessive pressure. The pressure relief cut-off valve has both pressure relief and cut-off functions. Once the pressure exceeds the safe range, it first performs a pressure relief operation to release the excess gas; it can also completely cut off the outlet to prevent the continuous flow of gas.

[0027] A cut-off valve and a pressure reducing valve are provided at the inlet of the loading compressor 4. Installing a cut-off valve at the inlet of the loading compressor 4 can quickly cut off the supply of helium in case of an emergency. The pressure reducing valve can accurately regulate the pressure of the helium entering the loading compressor 4. At the same time, a stable inlet pressure also helps to improve the working efficiency of the loading compressor 4 and the stability of filling.

[0028] Cut-off valves are provided at the front and rear ends of the filling compressor 2, and a circulation control valve is also provided at the outlet of the filling compressor 2. The cut-off valves facilitate the independent operation of the filling compressor 2. When repairing the compressor, the front and rear end cut-off valves can be closed.

[0029] Embodiment 2

[0030] The specific working principle of the helium rapid and safe filling device of the present utility model is as follows:

[0031] The high-purity helium in the high-purity helium buffer tank 1 first enters the fixed tube bundle 3 of high-pressure helium after being pressurized by the filling compressor 2. When the external helium container tube bundle vehicle enters the factory, first, the filling compressor 2 and the fixed tube bundle 3 are used to inflate the mobile tube bundle vehicle 9. When the outlet pressure of the loading compressor 4 reaches 150 Bar, it means that the equalizing filling is completed (that is, the pressure of the fixed tube bundle is equal to the pressure of the mobile tube bundle vehicle). At this time, the equalizing cut-off valve at the outlet of the fixed tube bundle 3 is automatically closed, and the cut-off valve at the inlet of the loading compressor 4 is opened. The helium in the fixed tube bundle 3 is pressurized by the loading compressor 4 and then transported to the mobile tube bundle vehicle 9 until the effective filling pressure of the mobile tube bundle vehicle 9 is reached.

[0032] Embodiment 3

[0033] For the helium rapid and safe filling device of the present utility model, the filling compressor 2 is directly connected to the filling port of the mobile tube bundle vehicle 9 through a filling skid, and the mobile tube bundle vehicle is filled synchronously by the filling compressor and the loading compressor, reducing the filling time.

[0034] The helium rapid and safe filling device of the present utility model is equipped with a vacuum pump 6, which facilitates the vacuum gas replacement of the helium container tube bundle vehicle when it is contaminated.

[0035] When the product gas is exported, it is necessary to conduct on-line monitoring of the oxygen content and water content in it according to industry practices to ensure that the product meets the national standard requirements. When detecting, open the corresponding sampling valve, take samples from the mobile tube bundle vehicle, the reserved tube bundle port, etc., open the sampling valve and the pressure reducing valve of the gas chromatograph 10, reduce the pressure to 1 Bar, and transport it to the gas chromatograph 10 through a pipeline for detection.

[0036] When it is detected that the helium gas in the mobile tube bundle vehicle 9 does not meet the requirements of high-purity helium, it is necessary to relieve the pressure of the helium gas in the mobile tube bundle vehicle 9. First, open the pressure relief hand valve of the mobile tube bundle vehicle 9 to discharge the impure helium gas back to the front system for re-purification treatment, and then replace and rinse the mobile tube bundle vehicle 9. The contaminated low-purity helium gas in the mobile tube bundle vehicle 9 is decompressed and then returned to the helium production device for re-purification.

[0037] For the helium rapid and safe filling device of the present utility model, the high-purity helium buffer tank is connected to the filling compressor to stabilize the pressure to protect the equipment and ensure efficient filling. The filling compressor is connected to the fixed tube bundle and the mobile tube bundle vehicle to achieve multi-functional and flexible filling, meeting the requirements of different scenarios. And it can evacuate the air before filling to improve the filling purity and system cleanliness.

Claims

1. Helium fast and safe filling device, characterized in that: The invention comprises a high-purity helium buffer tank (1) and a charging compressor (2), wherein the high-purity helium buffer tank (1) is connected to the charging compressor (2), the charging compressor (2) is connected to a fixed tube bundle (3), the charging compressor (2) is connected to a vacuum valve (6), the charging compressor (2) is connected to a mobile tube bundle vehicle (9), the fixed tube bundle (3) is connected to a loading compressor (4), the loading compressor (4) is respectively connected to a vacuum pump (5) and a mobile tube bundle vehicle (9); the fixed tube bundle (3) is also connected to the vacuum valve (6); the mobile tube bundle vehicle (9) is also respectively connected to a vacuum valve (7) of the mobile tube bundle vehicle and the vacuum valve (6); the vacuum valve (6) and the vacuum valve (7) of the mobile tube bundle vehicle are both connected to a vacuum hand valve (8), and the vacuum hand valve (8) is connected to a vacuum pump (5).

2. The helium fast and safe filling device according to claim 1, characterized in that: The fixed tube bundle (3) and the mobile tube bundle vehicle (9) are both connected to a gas chromatograph (10); and sampling valves are provided between the fixed tube bundle (3), the mobile tube bundle vehicle (9) and the gas chromatograph (10).

3. The helium fast and safe filling device according to claim 1, characterized in that: A pressure relief cut-off valve is provided at the outlet of the fixed tube bundle (3).

4. The helium fast and safe filling device according to claim 1, characterized in that: A cut-off valve and a pressure reducing valve are provided at the inlet of the loading compressor (4).

5. The helium fast and safe filling device according to claim 1, characterized in that: Cut-off valves are arranged at the front and rear ends of the filling compressor (2), and a circulation control valve is also arranged at the outlet of the filling compressor (2).

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