High-pressure sintered part testing equipment

Abstract

The utility model discloses high-pressure sintered part testing equipment which comprises an air supercharger, the output end of the air supercharger is connected with a testing workpiece, the testing workpiece comprises a connecting end and a testing end, the connecting end is connected to the output end of the air supercharger, the testing end is connected to a sintered part to be detected in a sealed mode, and the testing end is detachably connected with a pressing part in a sealed mode. By arranging the air supercharger, the air pressure for testing can be greatly improved, the device can be suitable for detection of high-pressure sintering parts of various specifications, and the to-be-detected sintering part can be stably sealed, fixed and installed through the testing workpiece connected with the air supercharger. High-pressure gas leakage caused by improper installation can be avoided, and the detection stability is improved.

Description

Technical Field

[0001] The utility model relates to the field of airtightness detection, in particular to a high-pressure sintered part testing device. Background Art

[0002] High-pressure sintered parts are widely used in nitrogen high-pressure sensors. In order to ensure the normal function of the sensor, the air tightness of the high-pressure sintered parts needs to be strictly tested. At present, the test of high-pressure sintered parts usually adopts filling with high-pressure gas and testing the air pressure to determine whether its air tightness meets the requirements. However, for high-pressure sintered parts with higher precision, the existing high-pressure gas detection usually cannot meet the detection requirements. Therefore, a test device that can greatly increase the test pressure has become an urgent problem to be solved in this field. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a high-pressure sintered component testing device to achieve the purpose of quickly performing airtightness testing on sintered components.

[0004] To achieve the above-mentioned purpose, the utility model provides a high-pressure sintered part testing equipment, including an air booster, wherein the output end of the air booster is connected to a test workpiece, the test workpiece includes a connecting end and a testing end, the connecting end is connected to the output end of the air booster, the testing end is sealingly connected to the sintered part to be tested, the testing end is sealingly and detachably connected to a pressing part, and the pressing part is pressurized and abutted against the sintered part to be tested.

[0005] Furthermore, the air booster includes a low-pressure input end and an output end, the output end is connected to a stop valve, and the stop valve is conductively connected to a pipeline.

[0006] Furthermore, the end of the pipeline is provided with a first external thread, and the inner side of the connecting end is provided with a first internal thread, and the first internal thread and the first external thread can be screwed and sealed.

[0007] Furthermore, a second external thread is provided on the outer side of the test end, and a second internal thread is provided on the end of the pressing piece, and the second external thread and the second internal thread can be screwed and sealed.

[0008] Furthermore, a sealing ring is embedded in the end of the test end, and the sealing ring is in sealing contact with the sintered part to be tested.

[0009] Furthermore, it also includes a test water tank, the test water tank is filled with liquid, and the test workpiece is immersed in the liquid.

[0010] Furthermore, a pressure gauge is connected to the output end of the air booster, and the pressure gauge is electrically connected to a pressure regulating valve, so that when the pressure gauge detects a target pressure, the pressure regulating valve is controlled to be closed, and when the pressure gauge detects that the pressure is less than the target pressure, the pressure regulating valve is controlled to be open.

[0011] The beneficial effects of the utility model are:

[0012] By setting up an air booster, the test air pressure can be greatly increased, which can be applicable to the inspection of high-pressure sintered parts of various specifications. The test workpiece connected to the air booster can stably seal and fix the sintered parts to be inspected, which can avoid high-pressure gas leakage caused by improper installation and improve the stability of the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings illustrate exemplary embodiments of the present invention and are used to explain the principles of the present invention together with the description. These drawings are included to provide a further understanding of the present invention, and the drawings are included in and constitute a part of this specification.

[0014] Figure 1 This is a schematic diagram of the test equipment structure of this embodiment;

[0015] Figure 2 This is a schematic diagram of the connection between the test workpiece and the sintered part to be tested in this embodiment.

[0016] Reference numerals:

[0017] 1. Air booster; 2. Test workpiece; 3. Connection end; 4. Test end; 5. Sintered part to be tested; 6. Pressed part; 7. Low-pressure input end; 8. Output end; 9. Stop valve; 10. Pipeline; 11. First internal thread; 13. Second external thread; 14. Second internal thread; 15. Sealing ring; 16. Test water tank; 17. Liquid; 18. Pressure gauge; 19. Pressure regulating valve. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant contents, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] refer to Figure 1 and Figure 2A high-pressure sintered component testing device includes an air booster 1, which is used to pressurize air. Specifically, the air booster 1 includes a low-pressure input terminal 7 and an output terminal 8. The low-pressure input terminal 7 is used to input low-pressure air, and the output terminal 8 is used to output pressurized high-pressure air. The output terminal 8 is connected to a stop valve 9, and the stop valve 9 is connected to a pipeline 10. The stop valve 9 is a manual stop valve 9, and the operator can control the output of high-pressure air by rotating the stop valve 9. The output terminal 8 of the air booster 1 is connected to a test workpiece 2, and the test workpiece 2 is used to seal and fix the sintered component 5 to be tested, that is, the test workpiece 2 is connected to the pipeline 10, and the pipeline 10 outputs high-pressure air into the test workpiece 2, so that the high-pressure air further fills the sintered component 5 to be tested.

[0021] refer to Figure 2 Specifically, the test workpiece 2 includes a connecting end 3, a test end 4 and a compression piece 6. The end of the pipeline 10 is provided with a first external thread, and the inner side of the connecting end 3 is provided with a first internal thread 11. The first internal thread 11 and the first external thread can be screwed and sealed to ensure that the high-pressure air output by the pipeline 10 can be fully input into the test workpiece 2. The outer side of the test end 4 is provided with a second external thread 13, and the end of the compression piece 6 is provided with a second internal thread 14. The second external thread 13 and the second internal thread 14 can be screwed and sealed. A sealing ring 15 is embedded in the end of the test end 4, and the sealing ring 15 is in sealing contact with the sintered part 5 to be tested. When the compression piece 6 and the test end 4 are in a screwed state, the compression piece 6 applies pressure to the sintered part 5 to be tested, so as to achieve a sealed contact between the sintered part 5 to be tested and the sealing ring 15, and the high-pressure air input from the connecting end 3 is filled into the sintered part 5 to be tested.

[0022] refer to Figure 1 In order to achieve high observability of the airtight test results, the test equipment also includes a test water tank 16, which is filled with liquid 17. Under the test state, the test workpiece 2 is immersed in the liquid 17. If bubbles are generated in the liquid 17, the airtightness does not meet the requirements. If no bubbles are generated, the airtightness meets the requirements.

[0023] refer to Figure 1 The output end 8 of the air booster 1 is connected to a pressure gauge 18, and the pressure gauge 18 is electrically connected to a pressure regulating valve 19. The pressure regulating valve 19 is an electronic pressure regulating valve, so that when the pressure gauge 18 detects the target pressure, the pressure regulating valve 19 is controlled to be closed, and when the pressure gauge 18 detects that the pressure is less than the target pressure, the pressure regulating valve 19 is controlled to be opened, so as to ensure the stability of the test process and the accuracy of the test results.

[0024] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above utility model, and these changes or modifications are still within the scope of the present utility model.

Claims

1. A high pressure sintered parts testing equipment, characterized in that: It includes an air booster, the output end of the air booster is connected to a test workpiece, the test workpiece includes a connecting end and a testing end, the connecting end is connected to the output end of the air booster, the testing end is sealed and connected to a sintered part to be tested, the testing end is sealed and detachably connected to a pressing part, and the pressing part is pressed and abutted against the sintered part to be tested.

2. The high pressure sintered part testing equipment according to claim 1, characterized in that: The air booster comprises a low-pressure input end and an output end, the output end is connected with a stop valve, and the stop valve is conductively connected with a pipeline.

3. The high pressure sintered part testing equipment according to claim 2, characterized in that: The end of the pipeline is provided with a first external thread, and the inner side of the connecting end is provided with a first internal thread, and the first internal thread and the first external thread can be screwed and sealed.

4. The high pressure sintered part testing equipment according to claim 1, characterized in that: The outer side of the test end is provided with a second external thread, and the end of the pressing piece is provided with a second internal thread. The second external thread and the second internal thread can be screwed and sealed.

5. The high pressure sintered part testing equipment according to claim 1, characterized in that: A sealing ring is embedded in the end of the test end, and the sealing ring is in sealing contact with the sintered part to be tested.

6. The high pressure sintered part testing equipment according to claim 1, characterized in that: It also includes a test water tank, which is filled with liquid, and the test workpiece is immersed in the liquid.

7. The high pressure sintered part testing equipment according to claim 1, characterized in that: The output end of the air booster is connected to a pressure gauge, and the pressure gauge is electrically connected to a pressure regulating valve, so that when the pressure gauge detects a target pressure, the pressure regulating valve is controlled to be closed, and when the pressure gauge detects that the pressure is less than the target pressure, the pressure regulating valve is controlled to be opened.

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