Device for recovering helium for leak detection of new energy ceramic shell

Abstract

The invention relates to the technical field of ceramic shell helium detection, in particular to a new energy ceramic shell leakage detection helium recovery device which comprises a detection gas cavity, an inflation assembly and a recovery assembly, a small cavity capable of achieving simultaneous leakage detection operation on multiple products is formed in the detection gas cavity, and the detection gas cavity is connected with a pressurization air cylinder; the inflating assembly is used for providing helium; and the recycling assembly can be used for automatically recycling the helium after leakage detection operation. According to the invention, the leakage detection mode of the new energy relay ceramic shell is upgraded from the traditional artificial helium detection to automatic leakage detection and helium recovery, the bad problems of helium waste and low productivity during leakage detection are effectively solved, and the problem that the new energy relay ceramic shell cannot realize automatic leakage detection and helium recovery can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic shell helium detection, and in particular to a device for recovering helium used in leak detection of new energy ceramic shells. Background Art

[0002] With the booming development of the new energy industry, the growth of the new energy ceramic industry has shown an exponential expansion, which has also driven a surge in demand for package sealing testing. As the requirements for new energy ceramic package testing precision, efficiency and accuracy continue to increase, the application of helium mass spectrometry leak detection technology in this field is facing changes.

[0003] At present, the industry generally uses manual helium detectors to perform helium leak detection on ceramic shells. The inspection process usually includes first evacuating the air, then filling it with helium, and finally performing helium leak detection with a helium detector. However, this traditional detection method is limited by its operating procedures and mainly relies on manual operation. The operator manually adjusts the helium detector to complete each leak detection step, which not only makes it difficult to ensure the consistency of detection accuracy, but also has relatively low efficiency. In addition, there is no helium recovery or reuse device between the helium detection and release processes, and there is a lack of an integrated automated helium recovery system, which results in a large amount of helium being wasted and the inability to achieve automated leak detection helium recovery.

[0004] Therefore, those skilled in the art provide a device for helium recovery for leak detection of new energy ceramic shells to solve the problems raised in the above background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a device for recovering helium for leak detection of new energy ceramic shells, comprising an inspection air cavity, an inflation component and a recovery component. A small cavity capable of realizing leak detection of multiple products at the same time is provided inside the inspection air cavity, and the inspection air cavity is connected to a booster cylinder;

[0006] The gas chamber is inspected and an inflation component for providing helium is provided, as well as a recovery component capable of automatically recovering helium after leak detection.

[0007] Preferably, six small cavities are provided inside the inspection air cavity, and each small cavity is connected to an air inlet valve and a vacuum valve.

[0008] Preferably, a plurality of the vacuum valves are connected in parallel, a plurality of air intake valves are connected in parallel, and the vacuum valves are connected in parallel and then connected to a vacuum pump.

[0009] Preferably, the inflation assembly comprises an injection valve, a gas storage tank and a helium source, the gas inlet of the gas storage tank is connected to the helium source, the gas outlet thereof is provided with the injection valve, and the injection valve is connected to the gas inlet valve.

[0010] Preferably, the recovery assembly comprises a helium recovery valve, a recovery tank, a recovery vacuum valve and a helium recovery pump.

[0011] Preferably, the helium recovery pump is connected to the recovery tank via a recovery vacuum valve, and the recovery tank is connected to the air inlet valve via a helium recovery valve.

[0012] Preferably, the operating method of the above recovery device comprises the following steps:

[0013] S1. Loading and sealing the inspection air cavity: placing the ceramic shell to be inspected in the six small cavities in the inspection air cavity, and covering and sealing the inspection air cavity to ensure the airtightness of the inspection process;

[0014] S2, vacuuming: start the vacuum pump, and vacuum each small cavity through the vacuum valves connected in parallel to ensure that the residual air inside the cavity is discharged;

[0015] S3. Filling with helium: Open the helium source, store the helium entering the gas storage tank, and then inject the helium into the inspection gas cavity and the small cavity through the injection valve and the air inlet valve to form a high-purity helium environment around each shell;

[0016] S4. Helium leak detection: The leak detection sensor or helium detection equipment detects the helium concentration inside the shell to determine whether helium has penetrated. If helium is detected in the shell, it means that the shell has a leak, otherwise it is considered to be sealed;

[0017] S5, helium recovery: after completing the leak detection, open the recovery vacuum valve of the recovery component, start the helium recovery pump, extract the helium from the small cavity, and send it to the recovery tank for storage. The helium recovery tank is connected to the air inlet valve again through the helium recovery valve to realize the recycling of helium;

[0018] S6. End of testing: After the recovery is completed, close all valves and release the seals, take out the tested shell, and prepare for the next round of testing.

[0019] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0020] 1. The present invention integrates a helium recovery component to automatically realize the recovery and reuse of helium, reduce resource waste, reduce detection costs, and meet environmental protection requirements; the device can simultaneously perform leak detection on multiple ceramic shells, thereby improving detection efficiency.

[0021] 2. The present invention reduces the reliance on manual operation by integrating the automatic control of multiple steps such as vacuuming, inflation and recycling, improves the consistency and accuracy of detection, and reduces the error caused by human factors.

[0022] 3. While ensuring the sealing of the inspection air cavity, the operation process is simplified, allowing technicians to easily perform inspections and maintenance, thereby improving the reliability of the overall leak detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a device for helium recovery for leak detection of new energy ceramic shells provided in an embodiment of the present application;

[0024] Figure 2 This is a flowchart of the steps of an operation method of a device for helium recovery in a new energy ceramic shell leak detection provided by an embodiment of the present application;

[0025] In the figure: 1. Inspection air cavity; 2. Small cavity; 3. Inlet valve; 4. Vacuum valve; 5. Booster cylinder; 6. Vacuum pump; 7. Injection valve; 8. Gas storage tank; 9. Helium source; 10. Helium recovery valve; 11. Recovery tank; 12. Recovery vacuum valve; 13. Helium recovery pump. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example

[0028] See also Figure 1 In this embodiment, a device for recovering helium for leak detection of new energy ceramic shells is provided, including a test air cavity 1, wherein a plurality of small cavities 2 are arranged inside the test air cavity 1, and the test air cavity 1 can realize leak detection of a plurality of products. The test air cavity 1 is connected to a booster cylinder 5, and after the product is placed in the test air cavity 1, helium is injected, and the booster cylinder 5 works to realize leak detection;

[0029] The inspection air cavity 1 is also connected to an inflation component and a recovery component. The inflation component realizes the injection of helium into the inspection air cavity 1, and the recovery component realizes the automatic recovery of helium after the inspection operation is completed.

[0030] In this embodiment, six small cavities 2 are arranged inside the inspection air cavity 1, and each small cavity 2 is connected to an air inlet valve 3 and a vacuum valve 4. The multiple air inlet valves 3 are connected in parallel, and the vacuum valves 4 are also connected in parallel, and are connected to a vacuum pump 6. Before the leak detection operation, the vacuum pump 6 is started, and the inside of the small cavity 2 is vacuumed through the vacuum valve 4, so that helium is injected into the inside for leak detection;

[0031] After evacuation, the inflation component is started to inject helium into the small cavity 2. The inflation component includes an injection valve 7, a gas storage tank 8 and a helium source 9. The gas inlet of the gas storage tank 8 is connected to the helium source 9, and the gas outlet thereof is installed with the injection valve 7. The injection valve 7 is connected to the gas inlet valve 3. In this way, the helium source 9 enters the gas storage tank 8 for storage, and the gas storage tank 8 then adds the helium into the small cavity 2 through the injection valve 7 and the gas inlet valve 3.

[0032] After the helium leak detection is completed, the automatic recovery of helium is realized through the recovery component, which includes a helium recovery valve 10, a recovery tank 11, a recovery vacuum valve 12 and a helium recovery pump 13. The helium recovery pump 13 is connected to the recovery tank 11 through the recovery vacuum valve 12, and the recovery tank 11 is connected to the intake valve 3 through the helium recovery valve 10. During recovery, the helium recovery pump 13 is started, which adjusts the pressure in the recovery tank 11, thereby adjusting the pressure values ​​in the six helium small cavities 2 to form a negative pressure environment to realize automatic recovery of helium.

[0033] The present invention is that after the loading is completed and the inspection gas cavity 1 is sealed with a pressure cap, a vacuum pump 6 is used to evacuate the six small test cavities 2 to reach their negative pressure value, and then a helium storage tank 8 connected to a helium source 9 is filled with helium, and automatic helium leak detection is performed through a helium detector. After the leak detection is completed, the helium recovery pump 13 is turned on, and the pressure values ​​of the six helium small cavities 2 are adjusted by adjusting the pressure of the recovery tank 11 to form a negative pressure environment, thereby achieving automatic helium recovery of the remaining helium in each small cavity 2, preventing the problem that the helium in the single cavity leak detection cannot be normally recovered, resulting in helium waste, and can improve the production capacity of a part of helium inspection.

[0034] Specifically, the operation method of the above recovery device includes the following steps:

[0035] S1. Loading and sealing the inspection air cavity: placing the ceramic shell to be inspected in the six small cavities 2 in the inspection air cavity 1, and covering and sealing the inspection air cavity 1 to ensure the airtightness of the inspection process;

[0036] S2, vacuuming: start the vacuum pump 6, and vacuum each small cavity 2 through the vacuum valve 4 connected in parallel to ensure that the residual air inside the cavity is discharged;

[0037] S3, filling with helium: open the helium source 9, store the helium entering the gas storage tank 8, and then inject the helium into the inspection gas cavity 1 and the small cavity 2 through the injection valve 7 and the air inlet valve 3 to form a high-purity helium environment around each shell;

[0038] S4. Helium leak detection: The leak detection sensor or helium detection equipment detects the helium concentration inside the shell to determine whether helium has penetrated. If helium is detected in the shell, it means that the shell has a leak, otherwise it is considered to be sealed;

[0039] S5, helium recovery: after the leak detection is completed, the recovery vacuum valve 12 of the recovery component is opened, the helium recovery pump 13 is started, the helium is extracted from the small cavity 2, and sent to the recovery tank 11 for storage, and the helium recovery tank 11 is connected to the intake valve 3 again through the helium recovery valve 10 to realize the recycling of helium;

[0040] S6. End of testing: After the recovery is completed, close all valves and release the seals, take out the tested shell, and prepare for the next round of testing.

[0041] The above method steps significantly improve the leak detection efficiency and accuracy of ceramic shells by integrating helium recovery and automated detection processes. First, the recovery and reuse of helium reduces resource waste and costs, and meets environmental protection requirements. Secondly, the automated operation process reduces manual intervention, ensures the consistency and reliability of detection, and can simultaneously detect leaks on multiple shells, meeting the industry's demand for high efficiency. Finally, the solution improves the accuracy and reliability of the test results by sealing the detection air cavity and forming a high-purity helium environment, ensuring the smooth progress of the entire leak detection process.

[0042] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A device for helium recovery for leak detection of new energy ceramic shells, characterized in that: The invention comprises an inspection air cavity (1), an air charging component and a recovery component. A small cavity (2) capable of realizing leak detection of multiple products at the same time is arranged inside the inspection air cavity (1). The inspection air cavity (1) is connected to a pressurizing cylinder (5). The inspection air cavity (1) and the inflation component for providing helium and the recovery component can realize automatic recovery of helium after the leak detection operation.

2. The device for helium recovery for leak detection of new energy ceramic shell according to claim 1 is characterized in that: Six small cavities (2) are arranged inside the inspection air cavity (1), and each small cavity (2) is connected to an air inlet valve (3) and a vacuum valve (4).

3. The device for helium recovery for leak detection of new energy ceramic shell according to claim 2 is characterized in that: A plurality of the vacuum pumping valves (4) are connected in parallel, a plurality of the air inlet valves (3) are connected in parallel, and the vacuum pumping valves (4) are connected in parallel and then connected to a vacuum pump (6).

4. The device for helium recovery for leak detection of new energy ceramic shell according to claim 1 is characterized in that: The inflation assembly comprises an injection valve (7), a gas storage tank (8) and a helium source (9); the gas inlet of the gas storage tank (8) is connected to the helium source (9), the gas outlet of the gas storage tank (8) is equipped with the injection valve (7), and the injection valve (7) is connected to the gas inlet valve (3).

5. The device for helium recovery for leak detection of new energy ceramic shell according to claim 1 is characterized in that: The recovery component comprises a helium recovery valve (10), a recovery tank (11), a recovery vacuum valve (12) and a helium recovery pump (13).

6. The device for helium recovery for leak detection of new energy ceramic shell according to claim 5 is characterized in that: The helium recovery pump (13) is connected to the recovery tank (11) via a recovery vacuum valve (12), and the recovery tank (11) is connected to the air inlet valve (3) via a helium recovery valve (10).

7. A device for helium recovery for leak detection of new energy ceramic shells according to any one of claims 1 to 6, characterized in that: The operating method of the above recovery device comprises the following steps: S1. Loading and sealing the inspection air cavity: placing the ceramic shell to be inspected in the six small cavities (2) in the inspection air cavity (1), and covering and sealing the inspection air cavity (1) to ensure airtightness during the inspection process; S2, vacuuming: starting the vacuum pump (6) and performing vacuuming on each small cavity (2) through the vacuum valves (4) connected in parallel to ensure that the residual air inside the cavity is exhausted; S3, filling with helium: opening the helium source (9), storing the helium entering the gas storage tank (8), and then injecting the helium into the inspection gas cavity (1) and the small cavity (2) through the injection valve (7) and the air inlet valve (3), so as to form a high-purity helium environment around each shell; S4. Helium leak detection: The leak detection sensor or helium detection equipment detects the helium concentration inside the shell to determine whether helium has penetrated. If helium is detected in the shell, it means that the shell has a leak, otherwise it is considered to be sealed; S5, helium recovery: after the leak detection is completed, the recovery vacuum valve (12) of the recovery component is opened, and the helium recovery pump (13) is started to extract the helium from the small cavity (2) and send it to the recovery tank (11) for storage. The helium recovery tank (11) is connected to the air inlet valve (3) again through the helium recovery valve (10) to realize the recycling of helium; S6. End of testing: After the recovery is completed, close all valves and release the seals, take out the tested shell, and prepare for the next round of testing.

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