Modular helium recycling and filling equipment

Abstract

The utility model discloses modular helium recovery and charging equipment, and belongs to the technical field of helium recovery and utilization, the modular helium recovery and charging equipment comprises a plurality of recovery and charging units, each recovery and charging unit comprises a helium recovery mechanism and a helium charging mechanism, and each helium recovery mechanism comprises a recovery port, a helium recovery pipeline, a vacuum pump, a low-pressure storage tank and a filter. The helium filling mechanism comprises a helium filling pipeline, a compressor and a high-pressure storage tank; one end of the helium recovery pipeline is communicated with the recovery port, the vacuum pump, the filter and the low-pressure storage tank are sequentially connected through the helium recovery pipeline, the compressor is connected with the high-pressure storage tank through the helium filling pipeline, the low-pressure storage tank is communicated with the high-pressure storage tank, and the compressor pumps gas in the low-pressure storage tank into the high-pressure storage tank. The helium recovery and filling device has the effect of reducing the production cost required by helium recovery and filling.

Description

Technical Field

[0001] The present application relates to the technical field of helium recovery and utilization, and in particular to a modular helium recovery and filling device. Background Art

[0002] At present, in the production of lithium batteries and precision instruments, helium is usually needed for product leak detection. If the helium in the above process is not recycled, it will pollute the environment and increase the production cost of the enterprise. Therefore, the recycling and reuse of helium is very important.

[0003] The relevant patent discloses a waste helium purification and recovery system, including a gas collecting tank connected to a high-pressure helium tank in a leak detection gas distribution system. The gas discharged from the gas collecting tank is connected to a helium separation unit through a pressure reducing valve PV. A valve first filter unit is provided on the pipeline between the high-pressure helium tank and the pressure reducing valve PV. The first filter unit is used to filter impurities in the gas to be purified. The helium separation unit is used to purify the helium and then output it.

[0004] The existing helium recovery and filling equipment has the following main problems: first, the operation process is complicated and requires a lot of manual intervention; second, it is inefficient and cannot achieve automated continuous operation. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a modular helium recovery and filling device, aiming to solve the above problems and improve work efficiency and safety.

[0006] The technical solution of this application to solve the above technical problems is as follows:

[0007] A modular helium recovery and filling device, comprising a plurality of recovery and filling units, wherein the recovery and filling units comprise a helium recovery mechanism and a helium filling mechanism, wherein the helium recovery mechanism comprises a recovery port, a helium recovery pipeline, a vacuum pump, a low-pressure storage tank and a filter, and the helium filling mechanism comprises a helium filling pipeline, a compressor and a high-pressure storage tank;

[0008] One end of the helium recovery pipeline is connected to the recovery port, the vacuum pump, the filter and the low-pressure storage tank are connected in sequence through the helium recovery pipeline, the compressor is connected to the high-pressure storage tank through the helium filling pipeline, the low-pressure storage tank is connected to the high-pressure storage tank, and the compressor pumps the gas in the low-pressure storage tank into the high-pressure storage tank.

[0009] Furthermore, it also includes an electrical control unit, which includes a touch screen, a PLC controller, a sensor, and a solenoid valve. The touch screen is used to display data collected by the sensor, and the PLC controller is used to control the switch of the solenoid valve.

[0010] Furthermore, one end of the high-pressure storage tank is connected to a backup compressor.

[0011] Furthermore, the standby compressor and / or the compressor is / are provided with a helium separation membrane.

[0012] Furthermore, the high-pressure storage tank is connected to an online detector, and the online detector is used to detect the purity of helium in real time.

[0013] Furthermore, the low-pressure storage tank is connected to a gas replenishment port, and when the online detector detects that the helium concentration is lower than a preset concentration, the gas replenishment port is used to introduce pure helium gas.

[0014] Furthermore, the high-pressure storage tank is connected to a filling port, and the filling port is used to output the gas in the high-pressure storage tank to the object to be filled.

[0015] Furthermore, the vacuum pump is connected to an external storage tank through an exhaust port, and the vacuum pump discharges gas to the external storage tank through the exhaust port.

[0016] In summary, compared with the prior art, the above technical solution has the following beneficial effects:

[0017] The modular helium recovery and filling equipment described in this application, when the equipment starts working, helium flows to the low-pressure storage tank through the vacuum pump to complete the early collection of gas, and then the gas is pumped into the high-pressure storage tank by the compressor through the gas separation membrane. At this time, the purity of the helium will be significantly improved. The design and use of the gas separation membrane component can effectively improve the purity of the helium and facilitate maintenance. The built-in online helium detector detects the collected helium in real time. When the recovery amount or purity does not meet the requirements, pure helium gas is introduced by the helium replenishment system. The automated helium recovery and filling method reduces the time and energy of manual operation and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the main structure of an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the structure of the filling port and the air supply port in the embodiment of the present application;

[0021] Figure 4 It is a schematic diagram of the structure of the high-pressure storage tank and the leakage detector in the embodiment of the present application.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. skid-mounted frame; 3. inspection door; 4. frame base; 5. touch screen; 6. flow meter; 8. recovery port; 9. drain port; 10. vacuum pump; 11. compressor; 12. standby compressor; 13. electric control box; 14. low-pressure storage tank; 15. high-pressure storage tank; 16. leakage detector; 17. online detector; 18. filter; 19. bypass loop; 20. filling port; 21. air supply port; 22. sensor; 23. solenoid valve; 24. helium separation membrane; 25. safety valve. DETAILED DESCRIPTION

[0023] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0024] The embodiment of the present application discloses a modular helium recovery and filling device.

[0025] Reference Figure 1-Figure 4 A modular helium recovery and filling equipment comprises a skid-mounted frame 1, an inspection door 3, a frame base 4 and a plurality of recovery and filling units. The frame base 4 is located at the bottom and is used to support the skid-mounted frame 1, the inspection door 3 and the recovery and filling units. The recovery and filling units are located inside the skid-mounted frame 1 and the inspection door 3. The plurality of recovery and filling units are connected in series in sequence through pipelines.

[0026] The recovery and filling unit includes a helium recovery mechanism and a helium filling mechanism. The helium recovery mechanism includes a recovery port 8, a first valve, a helium recovery pipeline, a vacuum pump 10, a low-pressure storage tank 14 and a filter 18. One end of the helium recovery pipeline is connected to the recovery port 8, and the other end of the helium recovery pipeline is connected to the vacuum pump 10. The vacuum pump 10, the filter 18 and the low-pressure storage tank 14 are connected in sequence through the helium recovery pipeline.

[0027] The helium filling mechanism includes an automatic control valve, a second valve, a helium filling pipeline, a compressor 11 and a high-pressure storage tank 15. The bottom of the high-pressure storage tank 15 is connected to the vacuum pump 10 through a bypass loop 19. When the evacuation command is executed, the vacuum pump 10 evacuates the residual gas in the high-pressure storage tank 15 through the bypass loop 19. The compressor 11 is connected to the high-pressure storage tank 15 through a helium filling pipeline, and the low-pressure storage tank 14 is connected to the high-pressure storage tank 15. The compressor 11 pumps the gas in the low-pressure storage tank 14 into the high-pressure storage tank 15.

[0028] The high-pressure storage tank 15 is connected to a filling port 20, and the filling port 20 is used to output the gas in the high-pressure storage tank 15 to the object to be filled. The vacuum pump 10 is connected to an external storage tank through an exhaust port 9, and the vacuum pump 10 discharges the gas to the external storage tank through the exhaust port 9. When multiple recovery and filling units are connected, the vacuum pump 10 and the compressor 11 are connected in sequence through pipelines, and the high-pressure storage tank 15 is connected to the helium recovery pipeline.

[0029] One end of the high-pressure storage tank 15 is connected to a standby compressor 12. A helium separation membrane 24 is provided in the standby compressor 12 and / or the compressor 11. Since the compressor 11 is a wearing part, by providing a standby compressor 12, the standby compressor 12 can be quickly replaced after the compressor 11 is damaged, thereby not delaying production operation.

[0030] The high-pressure storage tank 15 is connected to an online detector 17, which is used to detect the purity of helium in real time. The low-pressure storage tank 14 is connected to a gas inlet 21, which is used to introduce pure helium gas when the online detector 17 detects that the helium concentration is lower than the preset concentration. High-purity helium is transported to the low-pressure storage tank 14 through a pipeline, and the online detector 17 is installed on the high-pressure storage tank 5. During the gas detection process, there is no need for pressurized transportation, which reduces the possibility of poor transportation and pressure reverse flow due to low pressure of the gas source during high-pressure transportation.

[0031] The helium recovery and filling equipment also includes an electrical control unit, which includes a touch screen 5, a PLC controller, a sensor 22, and a solenoid valve 23. The sensor 22 is respectively installed on the helium recovery pipeline, the pipeline between the vacuum pump 10 and the compressor 11, and the helium filling pipeline. The sensor 22 is used to detect the pressure in the pipeline. The touch screen 5 is used to display the data collected by the sensor 22, and the PLC controller is used to control the switch of the solenoid valve 23. The touch screen 5 is installed on the equipment housing and is used to display the operation screen of the equipment, such as the start and stop switch of the equipment, the high / low pressure value in the pipeline, the helium concentration value, the helium flow rate and other data.

[0032] The electrical control unit also includes a flow meter 6, a leak detector 16, an electrical control box 13 and a safety valve 25. The flow meter 6 is installed on the helium filling pipeline and is connected to the PLC controller for measuring the helium flow rate and digitally displaying and remotely transmitting the flow data to the PLC controller.

[0033] The leak detector 16 is independently installed on the top of the equipment. The leak detector 16 is used to detect whether there is helium leakage in the internal components of the equipment. When helium leakage occurs in the internal pipelines or components of the equipment, the leak detector 16 recognizes that the air inside the equipment contains helium components and performs light and buzzer alarms. The electric control box 13 is installed at the bottom of the equipment box, and various electrical accessories are installed inside it to realize electrical automation control.

[0034] Sensors 22 are installed on the helium recovery pipeline, the pipeline between the vacuum pump 10 and the compressor 11, and the helium filling pipeline to detect the pressure value in the pipeline. The safety valve 25 is installed on the system pipeline to prevent the current pipeline pressure from being too high. When the pressure in the pipeline exceeds the safety value, it will automatically release the pressure to protect the system.

[0035] The implementation principle of a modular helium recovery and filling device in the embodiment of the present application is as follows: when the device starts working, the inlet helium (raw gas to be processed or helium with low purity of source gas) flows to the low-pressure storage tank 14 through the vacuum pump 10 to complete the early collection of the gas, and then the gas is pumped into the high-pressure storage tank 15 by the compressor 11 through the gas separation membrane. At this time, the purity of the helium will be significantly improved, and the temporarily stored high-pressure pure helium will be filled into the required equipment. For the helium that has been used, it can be recovered and reused again after the above treatment. The design and use of the gas separation membrane assembly can effectively improve the purity of the helium and facilitate maintenance. The built-in online detector 17 detects the collected helium in real time. When the recovery amount or purity does not meet the requirements, pure helium gas is introduced by the helium replenishment system. The automated helium recovery and filling method reduces the time and energy of manual operation and reduces production costs.

[0036] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A modular helium recovery and filling device, characterized in that: include: A plurality of recovery and filling units, wherein the recovery and filling units include a helium recovery mechanism and a helium filling mechanism, wherein the helium recovery mechanism includes a recovery port (8), a helium recovery pipeline, a vacuum pump (10), a low-pressure storage tank (14) and a filter (18), and the helium filling mechanism includes a helium filling pipeline, a compressor (11) and a high-pressure storage tank (15); One end of the helium recovery pipeline is connected to the recovery port (8); the vacuum pump (10), the filter (18) and the low-pressure storage tank (14) are connected in sequence via the helium recovery pipeline; the compressor (11) and the high-pressure storage tank (15) are connected via a helium filling pipeline; the low-pressure storage tank (14) and the high-pressure storage tank (15) are connected; and the compressor (11) pumps the gas in the low-pressure storage tank (14) into the high-pressure storage tank (15).

2. A modular helium recovery and filling device according to claim 1, characterized in that: It also comprises an electrical control unit, which comprises a touch screen (5), a PLC controller, a sensor (22), and a solenoid valve (23), wherein the touch screen (5) is used to display data collected by the sensor (22), and the PLC controller is used to control the switch of the solenoid valve (23).

3. The modular helium recovery and filling equipment according to claim 1, characterized in that: One end of the high-pressure storage tank (15) is connected to a standby compressor (12).

4. A modular helium recovery and filling device according to claim 3, characterized in that: The standby compressor (12) and / or the compressor (11) is provided with a helium separation membrane (24).

5. The modular helium recovery and filling equipment according to claim 1, characterized in that: The high-pressure storage tank (15) is connected to an online detector (17), and the online detector (17) is used to detect the purity of helium in real time.

6. A modular helium recovery and filling device according to claim 5, characterized in that: The low-pressure storage tank (14) is connected to a gas replenishment port (21), and when the online detector (17) detects that the helium concentration is lower than a preset concentration, the gas replenishment port (21) is used to introduce pure helium gas.

7. The modular helium recovery and filling equipment according to claim 1, characterized in that: The high-pressure storage tank (15) is connected to a filling port (20), and the filling port (20) is used to discharge the gas in the high-pressure storage tank (15) to an object to be filled.

8. The modular helium recovery and filling equipment according to claim 1, characterized in that: The vacuum pump (10) is connected to an external storage tank via an exhaust port (9), and the vacuum pump (10) discharges gas to the external storage tank via the exhaust port (9).

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