High-low pressure helium filling system
By designing a high- and low-pressure helium filling system, the problem that existing equipment cannot flexibly adjust helium pressure is solved, and the flexible matching of helium and workpieces is achieved, as well as the saving of helium resources, and the scope of application of the equipment is expanded.
Patent Information
- Application Number
- CN202421072537.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Existing helium leak detection equipment cannot flexibly adjust the helium pressure, which leads to the inability to match the helium pressure when replacing workpieces of different specifications and materials, which can easily lead to deformation of the workpieces. The applicable workpiece range is limited.
A high and low pressure helium filling system is designed, including a helium evacuation system, a helium filling system and a helium recovery system, through a high-pressure helium tank, a helium filling valve and a filling pipeline, combined with low-pressure and high-pressure pressure reducing valves And the corresponding solenoid valve to achieve flexible adjustment of helium pressure.
It achieves flexible matching of helium pressure and workpiece, expands the applicable scope of the helium filling system, and saves helium resources through the helium recovery system.
Smart Images
Figure CN222377841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of helium leak detection equipment, in particular to a high- and low-pressure helium filling system. Background Art
[0002] Helium leak detection is a commonly used leak detection technology. Its principle is to use the permeability and inertness of helium to inject helium into the organ to be detected, and determine the location and size of the leak through the reaction of the detector. The principle of helium leak detection can be divided into two methods: overflow method and pressure difference method. In the overflow method, helium is injected into the container. When the gas reaches a certain concentration, the gas around the leak area will react and the detector will detect the smell. The pressure difference method uses the permeability principle of gas under pressure difference. The organ to be detected is pressurized and helium is injected. Then, the change in leakage rate under different pressures is calculated to determine the location and size of the leak.
[0003] In the existing helium filling equipment used for helium leak detection, helium is injected into the workpiece through the filling interface, and the helium pressure is mostly a specified value preset by the system. If the workpiece is replaced with a different specification or material, the pressure during the helium filling process cannot be flexibly adjusted based on the material and volume requirements of the workpiece, and the filling equipment must be replaced. For example, if the helium pressure during the helium filling process of the previous workpiece is high, after the workpiece is replaced with a different specification or material, the high-pressure helium is injected into the workpiece, which is easy to cause deformation of the workpiece due to its greater impact force. Therefore, the range of workpieces that can be used with helium filling equipment is limited. Utility Model Content
[0004] In response to the above problems, the present application provides a high and low pressure helium filling system.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a high- and low-pressure helium filling system, comprising a helium evacuation system, a helium filling system and a helium recovery system, the helium filling system comprising a high-pressure helium tank, a helium filling valve arranged on the interface of the high-pressure helium tank and an inflation pipe connected to the helium filling valve, after the helium filling valve is opened, the helium in the high-pressure helium tank enters the inflation pipe.
[0006] The inflation pipeline is provided with a low-pressure reducing valve and a high-pressure reducing valve that can be switched on, and a low-pressure helium outlet control solenoid valve and a high-pressure helium outlet control solenoid valve that respectively cooperate with the low-pressure reducing valve and the high-pressure reducing valve are provided near the outlet of the inflation pipeline. The helium in the inflation pipeline can be discharged through the passage formed by the low-pressure reducing valve and the low-pressure helium outlet control solenoid valve when they are opened, or through the passage formed by the high-pressure reducing valve and the high-pressure helium outlet control solenoid valve when they are opened.
[0007] Furthermore, the helium recovery system includes a first recovery pipeline and a first helium recovery valve connected to the first recovery pipeline, and a low-pressure helium recovery tank. When the first helium recovery valve is opened, helium can pass through the first recovery pipeline and enter the interior of the first recovery pipeline.
[0008] Furthermore, the helium recovery system also includes a second helium recovery valve and a second recovery pipeline connected to the second helium recovery valve, the other interface end of the second recovery pipeline is connected to a helium recovery pump, and the helium recovery pump is connected to the low-pressure helium recovery tank through a third recovery pipeline.
[0009] Furthermore, the low-pressure helium recovery tank is connected to a compressor via a pipeline, and the compressor is connected to a high-pressure helium tank via a pipeline.
[0010] Furthermore, the helium evacuation system comprises a workpiece evacuation pump and an evacuation pipeline installed on the workpiece evacuation pump, and a workpiece evacuation valve is provided on the evacuation pipeline.
[0011] Furthermore, the high-pressure helium tank is provided with a concentration meter.
[0012] In summary, the technical effects and advantages of the utility model are:
[0013] The utility model is convenient for adjusting the pressure of helium required for filling, enhancing the adaptability of helium pressure and workpiece, improving the application range of the entire helium filling system, and has the advantage of flexible adjustment. At the same time, helium can be quickly and comprehensively entered into the low-pressure helium recovery tank to complete the recovery and utilization of helium, saving helium resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the structure of the utility model from top view.
[0017] Figure 3 This is a front view structural schematic diagram of the utility model.
[0018] In the figure: 1. Helium charging valve; 2. Low-pressure helium outlet control solenoid valve; 3. High-pressure helium outlet control solenoid valve; 4. Low-pressure pressure reducing valve; 5. High-pressure pressure reducing valve; 6. High-pressure helium tank; 7. Workpiece vacuum pump; 8. Workpiece vacuum valve; 9. First helium recovery valve; 10. Second helium recovery valve; 11. First recovery pipeline; 12. Second recovery pipeline; 13. Helium recovery pump; 14. Third recovery pipeline; 15. Low-pressure helium recovery tank; 16. Compressor. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] Example: Reference Figure 1 A high- and low-pressure helium filling system is shown, comprising a helium evacuation system, a helium filling system and a helium recovery system. The helium filling system comprises a high-pressure helium tank 6, a helium filling valve 1 provided on the interface of the high-pressure helium tank 6, and a filling pipe connected to the helium filling valve 1. After the helium filling valve 1 is opened, the helium in the high-pressure helium tank 6 enters the filling pipe.
[0021] The inflation pipeline is provided with a low-pressure pressure reducing valve 4 and a high-pressure pressure reducing valve 5 which can be switched on, and a low-pressure helium outlet control solenoid valve 2 and a high-pressure helium outlet control solenoid valve 3 which are respectively matched with the low-pressure pressure reducing valve 4 and the high-pressure pressure reducing valve 5 are provided near the outlet of the inflation pipeline. According to the type and material of the workpiece, the low-pressure pressure reducing valve 4 and the high-pressure pressure reducing valve 5 can be opened, and the low-pressure helium outlet control solenoid valve 2 or the high-pressure helium outlet control solenoid valve 3 which are respectively matched with the two can be opened to form a gas flow passage.
[0022] The helium in the charging pipeline can be discharged through the passage formed by the low-pressure reducing valve 4 and the low-pressure helium outlet control solenoid valve 2 being opened, or through the passage formed by the high-pressure reducing valve 5 and the high-pressure helium outlet control solenoid valve 3 being opened. Through the above charging method, the pressure of the helium required for charging can be easily adjusted, the adaptability of the helium pressure to the workpiece can be enhanced, the application range of the entire helium charging system can be improved, and the advantage of flexible adjustment can be achieved.
[0023] like Figure 2 , Figure 3As shown, in order to save helium resources and reduce helium consumption, the helium recovery system includes a first recovery pipeline 11, a first helium recovery valve 9 connected to the first recovery pipeline 11, and a low-pressure helium recovery tank 15. When the first helium recovery valve 9 is opened, a portion of the helium can directly pass through the first recovery pipeline 11 and enter the interior of the first recovery pipeline 11.
[0024] At the same time, Figure 2 , Figure 3 As shown, the helium recovery system also includes a second helium recovery valve 10 and a second recovery pipeline 12 connected to the second helium recovery valve 10, and the other interface end of the second recovery pipeline 12 is connected to a helium recovery pump 13, and the helium recovery pump 13 is connected to a low-pressure helium recovery tank 15 through a third recovery pipeline 14. When the second helium recovery valve 10 is opened, through the operation of the helium recovery pump 13, the remaining helium can enter the interior of the low-pressure helium recovery tank 15 through the second recovery pipeline 12 and the third recovery pipeline 14. Therefore, both high-pressure and low-pressure helium can quickly and comprehensively enter the interior of the low-pressure helium recovery tank 15.
[0025] like Figure 1 , Figure 2 As shown, the low-pressure helium recovery tank 15 is connected to a compressor 16 through a pipeline, and the compressor 16 is connected to the high-pressure helium tank 6 through a pipeline. Under the operation of the compressor 16, the helium recovered in the low-pressure helium recovery tank 15 can enter the high-pressure helium tank 6 to complete the recovery and reuse of the helium.
[0026] like Figure 1 As shown, before performing helium leak detection on a workpiece, the workpiece needs to be evacuated to a certain vacuum degree. Therefore, the helium evacuation system includes a workpiece evacuation pump 7 and an evacuation pipeline installed on the workpiece evacuation pump 7, and a workpiece evacuation valve 8 is provided on the evacuation pipeline.
[0027] like Figure 1 As shown, in order to detect in real time whether the concentration of helium in the high-pressure helium tank 6 meets the standard, a concentration meter is provided on the high-pressure helium tank 6.
[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high and low pressure helium filling system, characterized in that: It comprises a helium evacuation system, a helium filling system and a helium recovery system, wherein the helium filling system comprises a high-pressure helium tank (6), a helium filling valve (1) arranged on an interface of the high-pressure helium tank (6), and a filling pipeline connected to the helium filling valve (1); after the helium filling valve (1) is opened, the helium in the high-pressure helium tank (6) enters the filling pipeline; The inflation pipeline is provided with a low-pressure pressure reducing valve (4) and a high-pressure pressure reducing valve (5) which can be switched on and off, and a low-pressure helium gas outlet control solenoid valve (2) and a high-pressure helium gas outlet control solenoid valve (3) which respectively cooperate with the low-pressure pressure reducing valve (4) and the high-pressure pressure reducing valve (5) are provided at a position near the outlet of the inflation pipeline. The helium in the inflation pipeline can be discharged through a passage formed by opening the low-pressure pressure reducing valve (4) and the low-pressure helium gas outlet control solenoid valve (2) or a passage formed by opening the high-pressure pressure reducing valve (5) and the high-pressure helium gas outlet control solenoid valve (3).
2. The high and low pressure helium filling system according to claim 1, characterized in that: The helium recovery system comprises a first recovery pipeline (11), a first helium recovery valve (9) connected to the first recovery pipeline (11), and a low-pressure helium recovery tank (15); when the first helium recovery valve (9) is opened, helium can pass through the first recovery pipeline (11) and enter the interior of the first recovery pipeline (11).
3. The high and low pressure helium filling system according to claim 2, characterized in that: The helium recovery system further comprises a second helium recovery valve (10) and a second recovery pipeline (12) connected to the second helium recovery valve (10); the other interface end of the second recovery pipeline (12) is connected to a helium recovery pump (13); and the helium recovery pump (13) is connected to a low-pressure helium recovery tank (15) via a third recovery pipeline (14).
4. The high and low pressure helium filling system according to claim 2, characterized in that: The low-pressure helium recovery tank (15) is connected to a compressor (16) via a pipeline, and the compressor (16) is connected to a high-pressure helium tank (6) via a pipeline.
5. The high and low pressure helium filling system according to claim 1, characterized in that: The helium evacuation system comprises a workpiece evacuation pump (7) and an evacuation pipeline installed on the workpiece evacuation pump (7), and a workpiece evacuation valve (8) is provided on the evacuation pipeline.
6. The high and low pressure helium filling system according to claim 1, characterized in that: The high-pressure helium tank (6) is provided with a concentration meter.