Tool leakage marking device

Abstract

The utility model discloses a tool leakage marking device, and aims to solve the problems that in the prior art, the tool leakage rate is difficult to calibrate, the helium consumption is difficult to quantify, and the detection efficiency is low. The device comprises a gas tank, a gas flow regulating valve, a detected tool and a mass spectrometer, wherein the exhaust end of the detected tool is connected with the gas inlet detection end of the mass spectrometer through a permeation device. The permeation device comprises a tool leakage marking device shell, a mass spectrometer connecting flange, an air inlet pipe and a glass permeation membrane. The glass permeable membrane can provide a standardized leak rate detection means by arranging leak holes with different sizes. In addition, a dustproof sponge is arranged in the device to prevent the glass permeable membrane from being polluted. According to the utility model, the detection medium extends to the tool end, so that accurate calibration of the tool leak rate is realized, the detection efficiency is improved, the detection cost is reduced, and the detection reliability is enhanced.

Description

Technical Field

[0001] This utility model relates to a helium leak detection device, and more particularly to a tooling leak detection device. Background Technology

[0002] Helium leak detection, as a high-precision leak detection method, is widely used in industrial production, especially in fields with extremely high requirements for sealing. The mass spectrometer, as the core equipment in helium leak detection, directly affects the detection results. However, currently available standard leak meters are mainly used to calibrate the mass spectrometer itself, and there is a lack of effective standardized testing methods for the connection between the mass spectrometer and the tooling. This leads to the following problems:

[0003] Tooling sealing is difficult to test: Existing technology is not able to accurately determine whether the tooling itself is well sealed, which can easily lead to missed or wrong judgments.

[0004] Helium usage and detection time are difficult to quantify: During the detection process, the amount of helium used and the detection time are difficult to control precisely, resulting in resource waste and low detection efficiency.

[0005] Difficulty in preparing critical samples: Due to the lack of standardized leak rate detection methods, it is difficult to prepare critical samples that meet the requirements, and it is impossible to accurately determine the leak rate of the sample to be tested.

[0006] Therefore, developing a device that can effectively calibrate the leak rate of tooling is of great significance for improving the accuracy and efficiency of helium leak detection. Utility Model Content

[0007] The purpose of this invention is to provide a tooling marking device.

[0008] To achieve the above objectives, this utility model is implemented according to the following technical solution:

[0009] This utility model tooling leakage device includes a gas tank, a gas flow regulating valve, a test tool, and a mass spectrometer. The exhaust end of the gas tank is connected to the inlet end of the test tool through the gas flow regulating valve. The exhaust end of the test tool is connected to the inlet detection end of the mass spectrometer through a permeation device. The permeation device can adjust the leakage rate.

[0010] Furthermore, the permeation device includes a tooling mark-and-leak device housing, a mass spectrometer connecting flange, an inlet pipe, and a glass permeation membrane. The inlet pipe is located at one end of the tooling mark-and-leak device housing and is connected to the inside of the tooling mark-and-leak device housing. The other end of the inlet pipe is connected to the exhaust end of the tooling under test through a pipe. The other end of the tooling mark-and-leak device housing is detachably connected to one end of the mass spectrometer connecting flange, and the other end of the mass spectrometer connecting flange is detachably connected to the inlet detection end of the mass spectrometer. The glass permeation membrane is located in the middle section inside the tooling mark-and-leak device housing and is detachably connected to the inner wall of the tooling mark-and-leak device housing.

[0011] Preferably, the glass permeation membrane is of various types, and each of the various glass permeation membranes is provided with a leakage hole of different size.

[0012] As an improvement, the tooling marking device has a dustproof sponge inside its outer shell, and the dustproof sponge is placed between the glass permeable membrane and the air inlet pipe.

[0013] The beneficial effects of this utility model are:

[0014] This invention relates to a tooling leak calibration device. Compared with existing technologies, this invention extends the detection medium (helium gas) to the tooling end and sets a standard leak hole between the mass spectrometer and the tooling, thereby achieving precise calibration of the tooling leak rate. Compared with existing technologies, this invention has the following significant advantages:

[0015] Standardized leak rate calibration: By setting glass permeable membranes with leak holes of different sizes, a standardized leak rate detection method can be provided to accurately calibrate the helium concentration in the tooling cavity.

[0016] Improved detection efficiency: By adjusting the helium concentration at the tooling end and the leak rate reading of the mass spectrometer, the rationality of the medium concentration at the tooling end can be quickly determined, avoiding missed detections or over-detection due to unreasonable input parameters, thus significantly improving detection efficiency.

[0017] Reduced testing costs: By optimizing helium usage and testing time, resource waste was reduced, thus lowering testing costs.

[0018] Enhanced testing reliability: The glass transdermal membrane is protected by a dustproof sponge to prevent contamination, further improving the reliability and stability of the testing. Attached Figure Description

[0019] Figure 1 This is a partial cross-sectional view of the present invention;

[0020] Figure 2 This is a schematic diagram of the external structure of this utility model.

[0021] In the diagram: 1. Gas tank; 2. Gas flow regulating valve; 3. Test fixture; 4. Fixture leak indicator housing; 5. Mass spectrometer connecting flange; 6. Inlet pipe; 7. Dustproof sponge; 8. Glass permeable membrane. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0023] like Figure 1 and 2 As shown: The tooling leakage device of this utility model includes a gas tank 1, a gas flow regulating valve 2, a test tool 3 and a mass spectrometer. The exhaust end of the gas tank 1 is connected to the inlet end of the test tool 3 through the gas flow regulating valve 2. The exhaust end of the test tool 3 is connected to the inlet detection end of the mass spectrometer through a permeation device. The permeation device can adjust the leakage rate.

[0024] Furthermore, the permeation device includes a tooling mark and leak device housing 4, a mass spectrometer connecting flange 5, an air inlet pipe 6, and a glass permeation membrane 8. The air inlet pipe 6 is installed at one end of the tooling mark and leak device housing 4, and one end of the air inlet pipe 6 is connected to the inside of the tooling mark and leak device housing 4. The other end of the air inlet pipe 6 is connected to the exhaust end of the tooling 3 under test through a pipe. The other end of the tooling mark and leak device housing 4 is detachably connected to one end of the mass spectrometer connecting flange 5, and the other end of the mass spectrometer connecting flange 5 is detachably connected to the air inlet detection end of the mass spectrometer. The glass permeation membrane 8 is located in the middle section inside the tooling mark and leak device housing 4, and the glass permeation membrane 8 is detachably connected to the inner wall of the tooling mark and leak device housing 4.

[0025] Preferably, there are multiple types of glass permeation membranes 8, and each type of glass permeation membrane 8 is provided with a leakage hole of different size.

[0026] As an improvement, the tooling marking device housing 4 has a dustproof sponge 7 inside, which is placed between the glass permeable membrane 8 and the air inlet pipe 6.

[0027] Example 1

[0028] like Figure 1 and 2 As shown, the tooling marking device of this utility model includes the following main components:

[0029] Gas cylinder 1: Used to store helium gas, providing a medium for detection.

[0030] Gas flow regulating valve 2: Used to regulate the flow rate of helium gas, ensuring precise control of the amount of helium gas used during the detection process.

[0031] Test fixture 3: The equipment to be tested has its inlet end connected to the gas flow regulating valve and its exhaust end connected to the mass spectrometer through a permeation device.

[0032] The permeation apparatus includes: a tooling and labeling device housing 4, a mass spectrometer connecting flange 5, an inlet pipe 6, a dustproof sponge 7, and a glass permeation membrane 8. Among these:

[0033] The tooling leak device housing 4 has an air inlet pipe 6 at one end and is connected to the air inlet detection end of the mass spectrometer via a mass spectrometer connecting flange 5 at the other end.

[0034] The glass permeable membrane 8 is located in the middle section inside the housing, and provides a standardized method for leak rate detection by setting different sized leak holes.

[0035] Dustproof sponge 7 is placed between the glass permeable membrane and the air inlet pipe to prevent impurities in the external pipeline from contaminating the glass permeable membrane.

[0036] During the testing process, helium gas enters the test fixture 3 from gas tank 1 through gas flow regulating valve 2, and then enters the mass spectrometer for detection through a permeation device. By adjusting the gas flow regulating valve and selecting glass permeation membranes with different leak pores, the helium concentration and leakage rate at the fixture end can be precisely controlled, thereby achieving standardized calibration of the fixture leakage rate.

[0037] Example 2

[0038] In practical applications, to further improve the flexibility and accuracy of detection, this invention also provides various glass permeation membranes 8 with different leakage rates. Users can select the appropriate glass permeation membrane for leakage rate calibration according to different detection needs. For example, for high-precision detection, a glass permeation membrane with smaller leaks can be selected; for rapid detection, a glass permeation membrane with larger leaks can be selected. This design not only improves the applicability of the device but also further optimizes the detection efficiency.

[0039] In addition, the air inlet pipe 6 set at the upper end of the tooling marking device housing 4 adopts a standard external pipe port, which facilitates connection and disassembly with different test tooling 3, further improving the portability and versatility of the device.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leak detection device for a workpiece, comprising a gas tank (1), a gas flow regulating valve (2), a workpiece (3) to be measured, and a mass spectrometer, wherein the gas outlet end of the gas tank (1) is connected to the gas inlet end of the workpiece (3) through the gas flow regulating valve (2), characterized in that: The exhaust end of the test fixture (3) is connected to the inlet detection end of the mass spectrometer through a permeation device, and the permeation device can adjust the leakage rate. The permeation device includes a tooling leak device housing (4), a mass spectrometer connecting flange (5), an air inlet pipe (6), and a glass permeation membrane (8). The air inlet pipe (6) is installed at one end of the tooling leak device housing (4), and one end of the air inlet pipe (6) is connected to the inside of the tooling leak device housing (4). The other end of the air inlet pipe (6) is connected to the exhaust end of the tooling (3) being tested through a pipe. The other end of the tooling leak device housing (4) is detachably connected to one end of the mass spectrometer connecting flange (5), and the other end of the mass spectrometer connecting flange (5) is detachably connected to the air inlet detection end of the mass spectrometer. The glass permeation membrane (8) is located in the middle section inside the tooling leak device housing (4), and the glass permeation membrane (8) is detachably connected to the inner wall of the tooling leak device housing (4). The glass permeation membrane (8) can be of various types, and each of the various glass permeation membranes (8) is provided with a leakage hole of different size.

2. The tool marking and inspection apparatus of claim 1, wherein: The tooling leak device housing (4) has a dustproof sponge (7) inside, which is placed between the glass permeable membrane (8) and the air inlet pipe (6).

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