Multi-stage supercharged helium recovery system

Abstract

The utility model discloses a multi-stage supercharged helium recovery system, which comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the recycling air bag is communicated with the first pipeline, the recycling air bag is communicated with a high-pressure tank after being increased by a multi-stage pressurizing unit, and the high-pressure tank is used for filling helium into a workpiece; the helium calibration unit is used for calibrating the working helium concentration of the high-pressure tank; the helium calibration unit comprises a second pipeline internally provided with pure helium, a third pipeline internally provided with compressed air and a helium concentration instrument, the second pipeline and the third pipeline are respectively connected with the helium concentration instrument through a concentration instrument calibration valve, and the helium concentration instrument is also connected with a high-pressure tank. According to the utility model, the compactness of the structure is improved, and the occupied area of equipment is reduced. And in addition, the construction amount and the construction difficulty are effectively reduced. And meanwhile, the use safety is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of helium recovery systems, and in particular to a multi-stage pressurized helium recovery system. Background Technology

[0002] Traditional helium recovery and pressurization systems use compressors, which are relatively large and require a significant floor space if placed on a production line. Therefore, helium recovery systems using compressors are typically installed separately outside the production line. When the recovery system is placed far from the production line, it needs to be connected to helium leak detection equipment via pipelines and cables, increasing the workload and difficulty of installation. Utility Model Content

[0003] Therefore, it is necessary to provide a multi-stage pressurized helium recovery system to address the aforementioned technical problems.

[0004] A multi-stage pressurized helium recovery system includes:

[0005] The first pipeline has a negative pressure system for helium recovery.

[0006] The recovery airbag is connected to the first pipeline. After being pressurized by a multi-stage pressurization unit, the recovery airbag is connected to a high-pressure tank, which is used to fill the workpiece with helium.

[0007] A helium calibration unit is used to calibrate the working helium concentration of the high-pressure tank. The helium calibration unit includes a second pipe containing pure helium, a third pipe containing compressed air, and a helium concentration meter. The second pipe and the third pipe are respectively connected to the helium concentration meter via a concentration meter calibration valve. The helium concentration meter is also connected to the high-pressure tank.

[0008] In one embodiment, the multi-stage booster unit includes:

[0009] A primary gas booster pump is connected to the recovery airbag;

[0010] A secondary gas booster pump, one end of which is connected to the primary gas booster pump, and the other end of which is connected to a high-pressure tank;

[0011] A low-pressure tank, one end of which is connected to the primary gas booster pump, and the other end of which is connected to the secondary gas booster pump via a booster shut-off valve.

[0012] In one embodiment, both the low-pressure tank and the high-pressure tank are equipped with manual venting valves.

[0013] In one embodiment, a detection solenoid valve is provided between the high-pressure tank and the helium concentration meter.

[0014] In one embodiment, the second pipeline is equipped with a filter, a pressure sensor, a pressure reducing valve, and a safety valve.

[0015] In one embodiment, the recovery airbag is connected to an automatic exhaust valve.

[0016] In one embodiment, a fourth pipe is also included, the fourth pipe having a high-pressure balance recovery helium gas inside, and the fourth pipe being connected to the recovery gas bag via a pipeline ball valve.

[0017] The aforementioned multi-stage pressurized helium recovery system recovers negative-pressure helium from the first pipeline using a recovery bladder. Compared to a pressure vessel, the recovery bladder can hold more low-pressure helium, increasing structural compactness and reducing the equipment's footprint. Furthermore, after pressurizing the helium through the multi-stage pressurization unit, the high-pressure tank can be used to fill the workpiece with helium, allowing it to be installed on the production line, effectively reducing the amount and difficulty of construction. Simultaneously, a helium calibration unit calibrates the working helium concentration of the high-pressure tank, ensuring safe operation. In addition, the helium calibration unit can calibrate both pure helium and helium-free concentrations, ensuring the accuracy of the helium concentration meter at all times. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the multi-stage pressurized helium recovery system of this utility model. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] See Figure 1 As shown, one embodiment of this utility model provides a multi-stage pressurized helium recovery system, comprising:

[0024] The first pipeline 1 has a negative pressure system for helium recovery.

[0025] The recovery airbag 2 is connected to the first pipeline 1. After being increased by the multi-stage pressurization unit 3, the recovery airbag 2 is connected to the high-pressure tank 4. The high-pressure tank 4 is used to fill the workpiece with helium.

[0026] A helium calibration unit is used to calibrate the working helium concentration of the high-pressure tank 4. The helium calibration unit includes a second pipe 6 containing pure helium, a third pipe 7 containing compressed air, and a helium concentration meter 8. The second pipe 6 and the third pipe 7 are respectively connected to the helium concentration meter 8 via a concentration meter calibration valve 5. The helium concentration meter 8 is also connected to the high-pressure tank 4. Specifically, during idle periods of helium concentration detection, the helium concentration meter 8 is calibrated with both pure helium and helium-free concentrations to ensure the accuracy of the helium concentration meter 8 at all times.

[0027] The aforementioned multi-stage pressurized helium recovery system recovers negative-pressure helium from the first pipeline 1 via a recovery bladder 2. Compared to a pressure vessel, the recovery bladder 2 can more easily hold a larger amount of low-pressure helium, increasing structural compactness and reducing the equipment's footprint. Furthermore, after multi-stage pressurization of the helium by the multi-stage pressurization unit 3, the high-pressure tank 4 can be used to fill the workpiece with helium. It can be installed on the production line, effectively reducing the amount and difficulty of construction. Simultaneously, the helium calibration unit calibrates the working helium concentration of the high-pressure tank 4, ensuring safe operation. In addition, the helium calibration unit can also calibrate pure helium and helium-free concentrations, ensuring the accuracy of the helium concentration meter at all times.

[0028] In one embodiment of this utility model, the multi-stage booster unit 3 includes:

[0029] A primary gas booster pump 31 is connected to the recovery airbag 2;

[0030] A secondary gas booster pump 32, one end of which is connected to the primary gas booster pump 31, and the other end of which is connected to the high-pressure tank 4;

[0031] The low-pressure tank 33 has one end connected to the primary gas booster pump 31, and the other end connected to the secondary gas booster pump 32 via a booster shut-off valve.

[0032] In this embodiment, the negative pressure inside the recovery airbag 2 recovers helium, which is then pressurized in two stages by a primary gas booster pump 31 and a secondary gas booster pump 32 to meet the working helium pressure and flow requirements of the high-pressure tank 4. In some embodiments, as the operating pressure and flow rate change, a third-stage or fourth-stage pressurization can be configured; or multiple booster pumps can be connected in parallel to solve the flow and pressure problems.

[0033] It should be noted that the low-pressure tank 33 in this embodiment can temporarily store helium gas after it has been boosted by the primary gas booster pump 31, thereby facilitating the matching of the secondary gas booster pump 32 for pressurization. Preferably, the low-pressure tank 33 can be equipped with a pressure gauge, pressure sensor, and pressure valve, etc., so that the pressure of the low-pressure tank 33 can be observed more intuitively, facilitating troubleshooting and ensuring safety and reliability.

[0034] In one embodiment of this utility model, both the low-pressure tank 33 and the high-pressure tank 4 are equipped with manual exhaust valves 9. This facilitates the release of helium gas from the interior of the low-pressure tank 33 and the high-pressure tank 4.

[0035] In one embodiment of this utility model, a detection solenoid valve 10 is provided between the high-pressure tank 4 and the helium concentration meter 8. By opening or closing the detection solenoid valve 10, the detection of helium concentration at the outlet of the high-pressure tank 4 by the helium concentration meter 8 can be controlled or stopped.

[0036] In one embodiment of this utility model, the second pipeline 6 is respectively equipped with a filter 11, a pressure sensor 12, a pressure reducing valve 13, and a safety valve 14. This allows for more direct observation of the nitrogen pressure in the second pipeline 6, facilitating troubleshooting and ensuring safety and reliability.

[0037] In one embodiment of this invention, the recovery airbag 2 is connected to an automatic exhaust valve 15. When the helium pressure inside the recovery airbag 2 reaches a set range, the automatic exhaust valve 15 can automatically release the gas, improving safety during use.

[0038] In one embodiment of this utility model, a fourth pipe 16 is further included. The fourth pipe 16 is internally equipped with high-pressure balancing helium recovery gas. The fourth pipe 16 is connected to the recovery gasbag 2 via a pipeline ball valve 17. The high-pressure balancing helium recovery gas can balance the helium pressure inside the recovery gasbag 2, thereby improving recovery efficiency and safety.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments are merely illustrative of several implementations of this utility model and should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-stage pressurized helium recovery system, characterized in that, include: The first pipeline has a negative pressure system for helium recovery. The recovery airbag is connected to the first pipeline. After being pressurized by a multi-stage pressurization unit, the recovery airbag is connected to a high-pressure tank, which is used to fill the workpiece with helium. A helium calibration unit is used to calibrate the working helium concentration of the high-pressure tank. The helium calibration unit includes a second pipe containing pure helium, a third pipe containing compressed air, and a helium concentration meter. The second pipe and the third pipe are respectively connected to the helium concentration meter via a concentration meter calibration valve. The helium concentration meter is also connected to the high-pressure tank.

2. The multi-stage pressurized helium recovery system as described in claim 1, characterized in that, The multi-stage booster unit includes: A primary gas booster pump is connected to the recovery airbag; A secondary gas booster pump, one end of which is connected to the primary gas booster pump, and the other end of which is connected to a high-pressure tank; A low-pressure tank, one end of which is connected to the primary gas booster pump, and the other end of which is connected to the secondary gas booster pump via a booster shut-off valve.

3. The multi-stage pressurized helium recovery system as described in claim 2, characterized in that, Both the low-pressure tank and the high-pressure tank are equipped with manual exhaust valves.

4. The multi-stage pressurized helium recovery system as described in claim 3, characterized in that, A detection solenoid valve is provided between the high-pressure tank and the helium concentration meter.

5. The multi-stage pressurized helium recovery system as described in claim 1, characterized in that, The second pipeline is equipped with a filter, a pressure sensor, a pressure reducing valve, and a safety valve.

6. The multi-stage pressurized helium recovery system as described in claim 1, characterized in that, The recovery airbag is connected to an automatic exhaust valve.

7. The multi-stage pressurized helium recovery system as described in claim 1, characterized in that, It also includes a fourth pipe, which is equipped with a high-pressure balance recovery helium gas inside, and the fourth pipe is connected to the recovery gas bag via a pipeline ball valve.

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