A fluid connector air tightness detection device

Abstract

The utility model discloses a kind of fluid connector air-tightness detection device, comprising: test tool, one or more test fixtures containing test sample are fixed on the test tool;Helium cylinder, the output end of the helium cylinder is connected with the helium input interface being arranged in the test tool side by pipeline, for providing helium to the test fixture in the test tool;Helium mass spectrum leak detector, the input end of the helium mass spectrum leak detector is connected with the detection interface being arranged in test tool side by pipeline, for detecting helium leaked by test fixture. The utility model can realize the function of simultaneously detecting the air-tightness of multiple fluid connectors, effectively improve the detection efficiency of fluid connector, with the advantages of strong practicality, convenient operation, high detection efficiency etc.

Description

Technical Field

[0001] This utility model relates to the field of fluid connector airtightness testing technology, and specifically to a fluid connector airtightness testing device. Background Technology

[0002] Fluid connectors are key components of liquid cooling system interfaces. They are connectors that enable or disable fluid flow in pipelines, consisting of a plug and a socket. Each plug and socket acts as a one-way valve. When not inserted, the one-way valves are closed, and the plug and socket are in a self-sealing state, preventing liquid from flowing out of the pipeline. When the plug is pushed into the socket, the spring is compressed, and the valve cores of the plug and socket are pushed open, opening the pipeline and allowing fluid to flow. Fluid connector leakage can cause minor issues like increased equipment temperature, affecting normal operation, or even serious damage like equipment burnout, leading to major quality and safety accidents. Therefore, airtightness testing of fluid connectors is crucial. Conventional airtightness testing involves using a helium mass spectrometer leak detector. Helium gas is injected into the fluid connector under test, and a suction gun connected to the leak detector is used to sniff the surface of the workpiece. When a leak is detected, the leaking helium gas is detected by the helium mass spectrometer through the suction gun. However, this testing method suffers from problems such as cumbersome operation, high manual workload, and low testing efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fluid connector airtightness testing device that can simultaneously test multiple fluid connectors and improve testing efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A fluid connector airtightness testing device, comprising: A test fixture, wherein one or more test clamps for accommodating test samples are fixed on the test fixture; A helium cylinder, the output end of which is connected to a helium input interface located on one side of the test fixture via a pipeline, for supplying helium to the test fixture inside the test fixture; A helium mass spectrometer leak detector, wherein the input end of the helium mass spectrometer leak detector is connected to a detection interface set on one side of the test fixture via a pipeline, and is used to detect helium leaking through the test fixture.

[0005] As a further improvement to the above technical solution: The test fixture includes a base, an air inlet and an air outlet respectively located on opposite sides of the base, and the base has a through airflow channel to connect the air inlet and the air outlet.

[0006] The test fixture also includes a number of first fixing heads matching the number of test fixtures. The first fixing head includes a first external thread section and a nut. The base is provided with one or more internal thread openings communicating with the airflow channel. The threads of the internal thread openings match the first external thread section to install the first fixing head on the base and fix it with the nut.

[0007] The connection between the internal thread opening and the first external thread section is also provided with a first sealing ring to ensure the airtightness of the connection between the two.

[0008] The test fixture also includes a number of second fixing heads that match the number of test fixtures. The second fixing head has a second internal thread section inside, and the first fixing head has a second external thread section in the direction away from the base. The second external thread section and the second internal thread section are matched to fix the second fixing head on the first fixing head.

[0009] The second fixing head is also provided with a connecting hole that matches the shape of the test fixture in the direction away from the first fixing head, and the test fixture is fixed on the second fixing head through the connecting hole.

[0010] The length of the second external thread section is greater than the length of the second internal thread section, so that the connection distance between the second fixed head and the first fixed head can be adjusted.

[0011] A second sealing ring is also provided at the connection between the second fixing head and the test fixture to ensure the airtightness of the connection between the two.

[0012] The number of test fixtures is 1-10.

[0013] Both the first fixing head and the second fixing head are made of iron.

[0014] Compared with the prior art, the advantages of this utility model are: The fluid connector airtightness testing device of this invention can realize the function of simultaneous airtightness testing of multiple fluid connectors, effectively improving the testing efficiency of fluid connectors. It has the advantages of strong practicality, convenient operation and high testing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic block diagram of the fluid connector airtightness testing device of this utility model.

[0016] Figure 2 This is a front view of the test fixture for the fluid connector airtightness testing device of this utility model.

[0017] Figure 3 This is a front view of the connection between the test fixture and the test jig of the fluid connector airtightness testing device of this utility model.

[0018] Figure 4 This is an exploded view showing the connection between the test fixture and the test jig of the fluid connector airtightness testing device of this utility model.

[0019] Figure 5 The following are the airtightness testing steps of the fluid connector airtightness testing device of this utility model.

[0020] Explanation of reference numerals in the attached diagram: 1. Test fixture; 11. Base; 12. Air inlet; 13. Air outlet; 14. Airflow channel; 15. First fixed head; 151. First external thread section; 152. Nut; 153. Second external thread section; 16. Internal thread opening; 161. First sealing ring; 17. Second fixed head; 171. Second internal thread section; 172. Connecting hole; 18. Second sealing ring; 2. Test fixture; 3. Helium cylinder; 4. Helium mass spectrometer leak detector. Detailed Implementation

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1 As shown, the fluid connector airtightness testing device of this embodiment includes: Test fixture 1, on which one or more test clamps 2 for accommodating test samples are fixed; Helium cylinder 3, the output end of helium cylinder 3 is connected to the helium input interface located on one side of test fixture 1 through a pipeline, and is used to supply helium to test fixture 2 inside test fixture 1; The helium mass spectrometer leak detector 4 has its input end connected to the detection interface on one side of the test fixture 1 via a pipeline, and is used to detect helium leaking through the test fixture 2.

[0023] In a specific application embodiment, optionally, a host computer can control a helium cylinder via a solenoid valve to apply helium gas at a specified pressure to the fluid connector under test. Then, a helium mass spectrometer leak detector is used to detect the amount of helium leakage inside the testing fixture. The leakage amount is judged and recorded, thereby achieving automated testing of the fluid connector's airtightness. For example, by integrating and controlling the helium mass spectrometer leak detector and helium cylinder through host computer software, automated control of the fluid connector testing conditions, automatic collection of test results, and report output can be achieved, improving testing efficiency.

[0024] like Figure 1 As shown, the green lines represent data and control signal transmission, and the black lines represent helium gas transmission. The host computer controls the solenoid valve to automatically load and depressurize the helium cylinder onto the test fluid connector. The helium mass spectrometer leak detector is controlled by a host computer to automatically detect helium leaks. The fluid connector samples were connected using testing fixtures. The airtightness test data is analyzed and processed using host computer software. The airtightness test data is generated into a report and exported using the host computer software in a preset format.

[0025] In this embodiment, as Figures 2 to 4 As shown, the test fixture 1 includes a base 11, an air inlet 12 and an air outlet 13 respectively located on opposite sides of the base 11, and a through airflow channel 14 inside the base 11 to connect the air inlet 12 and the air outlet 13.

[0026] In this embodiment, the test fixture 1 also includes a number of first fixing heads 15 that match the number of test fixtures 2. The first fixing head 15 includes a first external thread section 151 and a nut 152. The base 11 is provided with one or more internal thread openings 16 that communicate with the airflow channel. The threads of the internal thread openings 16 match the first external thread section 151 to install the first fixing head 15 on the base 11 and fix it with the nut 152.

[0027] In this embodiment, a first sealing ring 161 is also provided at the connection between the internal thread opening 16 and the first external thread section 151 to ensure the airtightness of the connection between the two.

[0028] In this embodiment, the test fixture 1 also includes a second fixing head 17 in number that matches the test fixture 2. The second fixing head 17 has a second internal thread section 171 inside. The first fixing head 15 has a second external thread section 153 in the direction away from the base 11. The second external thread section 153 and the second internal thread section 171 are matched to fix the second fixing head 17 on the first fixing head 15.

[0029] In this embodiment, the second fixing head 17 is also provided with a connecting hole 172 that matches the shape of the test fixture 2 in the direction away from the first fixing head 15, and the test fixture 2 is fixed on the second fixing head 17 through the connecting hole 172.

[0030] In this embodiment, the length of the second external thread segment 153 is greater than the length of the second internal thread segment 171, so that the connection distance between the second fixing head 17 and the first fixing head 15 can be adjusted.

[0031] In this embodiment, a second sealing ring 18 is also provided at the connection between the second fixing head 17 and the test fixture 2 to ensure the airtightness of the connection between the two.

[0032] In this embodiment, the number of test fixtures 2 is 1-10.

[0033] In this embodiment, both the first fixing head 15 and the second fixing head 17 are iron fixing heads.

[0034] As can be understood, the test fixture in this embodiment consists of a base and a fixture mating part (including a first fixing head and a second fixing head). Testing different connector models only requires changing the different fixture mating parts, and the fixture can simultaneously test the airtightness of multiple fluid connectors, improving testing efficiency. The fixture mating part is further divided into a first fixing head and a second fixing head. The lower end of the first fixing head connects to the base, and the upper end connects to the second fixing head. The second fixing head is used to connect to the quick connector (i.e., the test fixture). The fixture mating part is used to connect with the base and the connector under test. When testing quick connector plugs or sockets of different sizes, only the second fixing head of the fixture mating part needs to be replaced. The base of the test fixture has an internal airflow channel with an air inlet and an air outlet at both ends. The air inlet is connected to a helium cylinder for inputting helium, and the air outlet is connected to a solenoid valve for depressurizing the test fixture. The base, the first fixing head, and the second fixing head are connected to each other using threads and sealing rings to ensure airtightness.

[0035] like Figure 5 As shown, the steps for performing airtightness testing using the fluid connector airtightness testing device of this embodiment are as follows: (1) Before the test, the fluid connector sample to be tested is mounted on the test fixture; (2) The operator opens the host computer software interface. The software system determines the connection status by communicating with each device. If the connection is normal, it will be displayed with a green light; if it is abnormal, it will be displayed with a red light. (3) After communication is normal, the host computer software interface displays the control interface for airtightness testing. The operator manually inputs various test parameters through the open interface of the host computer software, including airtightness test pressure, air pressure stabilization time, and leakage threshold; (4) After the test begins, the host computer controls the solenoid valve to output helium from the helium cylinder to the test fixture. After the gas pressure stabilizes, the host computer controls the helium mass spectrometer leak detector to detect the amount of helium leakage in the fixture. The host computer compares the test value with the leakage threshold. If the index reaches the threshold, the host computer will pause the test and alarm. If the index does not reach the threshold, the helium leakage value will be recorded. (5) After the test, the host computer releases pressure by controlling the solenoid valve. After the pressure is released, the fluid connector in the tooling can be removed and the host computer will automatically export the data report.

[0036] If leakage exceeds the standard when testing the air tightness of multiple fluid connectors at the same time, an air tightness test must be performed on a single fluid connector. Note that the empty connection ports in the test fixture should be plugged with plugs. The test method is as above in steps (1)-(5).

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fluid connector airtightness testing device, characterized in that, include: Test fixture (1), on which one or more test jigs (2) for accommodating test samples are fixed; Helium cylinder (3), the output end of which is connected to a helium input interface located on one side of the test fixture (1) via a pipeline, for supplying helium to the test fixture (2) inside the test fixture (1); Helium mass spectrometer leak detector (4), the input end of which is connected to the detection interface set on one side of the test fixture (1) through a pipeline, is used to detect helium leaking through the test fixture (2); The test fixture (1) includes a base (11), an air inlet (12) and an air outlet (13) respectively located on opposite sides of the base (11). The base (11) has a through airflow channel (14) to connect the air inlet (12) and the air outlet (13). The test fixture (1) further includes a number of first fixing heads (15) matching the number of test fixtures (2). The first fixing head (15) includes a first external thread section (151) and a nut (152). The base (11) is provided with one or more internal thread openings (16) communicating with the airflow channel. The threads of the internal thread openings (16) match the first external thread section (151) to install the first fixing head (15) on the base (11) and fix it with the nut (152).

2. The fluid connector airtightness testing device according to claim 1, characterized in that, The connection between the internal threaded opening (16) and the first external threaded section (151) is also provided with a first sealing ring (161) to ensure the airtightness of the connection between the two.

3. The fluid connector airtightness testing device according to claim 1, characterized in that, The test fixture (1) further includes a second fixing head (17) in number matching the test fixture (2). The second fixing head (17) has a second internal thread section (171) inside. The first fixing head (15) also has a second external thread section (153) in the direction away from the base (11). The second external thread section (153) matches the second internal thread section (171) to fix the second fixing head (17) on the first fixing head (15).

4. The fluid connector airtightness testing device according to claim 3, characterized in that, The second fixing head (17) is also provided with a connecting hole (172) that matches the shape of the test fixture (2) in the direction away from the first fixing head (15), and the test fixture (2) is fixed on the second fixing head (17) through the connecting hole (172).

5. The fluid connector airtightness testing device according to claim 3, characterized in that, The length of the second external thread section (153) is greater than the length of the second internal thread section (171) so that the connection gap between the second fixing head (17) and the first fixing head (15) is adjustable.

6. The fluid connector airtightness testing device according to claim 3, characterized in that, A second sealing ring (18) is also provided at the connection between the second fixing head (17) and the test fixture (2) to ensure the airtightness of the connection between the two.

7. The fluid connector airtightness testing device according to any one of claims 1-6, characterized in that, The number of the test fixtures (2) is 1-10.

8. The fluid connector airtightness testing device according to any one of claims 3-6, characterized in that, Both the first fixing head (15) and the second fixing head (17) are iron fixing heads.

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