Testing device for research and development of diaphragm compressor

Abstract

The utility model belongs to the technical field of metal material fatigue tests, and particularly relates to a testing device for diaphragm compressor research and development, which comprises a support and a testing assembly, the support is a rectangular frame-shaped support, clamping assemblies are arranged in the middle of the inner side of a left frame and the middle of the inner side of a right frame of the support, and the testing assembly comprises a hydraulic cylinder and a testing mold. The fixed end of the hydraulic cylinder is connected with the inner side of an upper side frame of the support, the telescopic end of the hydraulic cylinder is connected with the upper side of the test mold, the test mold comprises an upper mold, a lower mold and a connecting plate, and the connecting plate is fixedly connected with the rear sides of the upper mold and the lower mold. And a periodic load test is carried out, and the stress state of the compressor in actual service is simulated to the greatest extent, so that the data of the symmetric bending fatigue test of the metal diaphragm is true and credible.

Description

Technical Field

[0001] This utility model belongs to the field of fatigue testing technology for metallic materials, specifically, it relates to a testing device for the research and development of diaphragm compressors. Background Technology

[0002] A diaphragm compressor, also known as a membrane compressor, is a type of reciprocating compressor among positive displacement compressors, using hydraulically driven diaphragms. It consists of a hydraulic system and a gas compression system. A forward-moving piston causes hydraulic oil to impact the bottom of the diaphragm, compressing the cavity and expelling the process gas. The metal diaphragm is clamped between two high-precision fixtures, surrounded by a sealing roll and secured with bolts, providing excellent sealing. The gas chamber within the diaphragm cavity requires no lubrication, thus preventing contamination of the compressed gas. It also allows for high-pressure compression. When selecting diaphragm materials, cyclic load tests are necessary to verify the reliability of the metal diaphragm. To simulate the stress conditions of the compressor in actual service as closely as possible, symmetrical bending fatigue tests are also required on the metal diaphragm. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a testing device for the research and development of diaphragm compressors, comprising a support frame and testing components. The support frame is a rectangular frame, with clamping components located in the middle of the inner sides of both the left and right frames. The testing components include a hydraulic cylinder and a testing mold. The fixed end of the hydraulic cylinder is connected to the inner side of the upper frame of the support frame, and the telescopic end of the hydraulic cylinder is connected to the upper side of the testing mold. The testing mold includes an upper mold, a lower mold, and a connecting plate. The shapes of the upper and lower molds match the shapes of the metal diaphragm clamps of the diaphragm compressor, and the upper and lower molds are arranged vertically and vertically. The connecting plate is fixedly connected to the rear side of the upper and lower molds.

[0004] Furthermore, the clamping assembly includes a concave clamping plate and a screw. The groove of the concave clamping plate faces the center of the bracket, and the upper side of the concave clamping plate is provided with a screw hole 1 perpendicular to the concave clamping plate. The screw hole 1 and the screw are threaded together. The clamping assembly is used to fix the metal diaphragm to prevent the metal diaphragm from falling off or moving during the test, and to ensure the accuracy of the test results.

[0005] Furthermore, the groove of the concave clamp plate matches the metal diaphragm of the diaphragm compressor, and the metal diaphragm of the diaphragm compressor is provided with corresponding screw hole two. The metal diaphragm of the diaphragm compressor is inserted into the groove of the concave clamp plate, and the screw passes through screw hole one and screw hole two to fix the metal diaphragm of the diaphragm compressor. The two sides of the metal diaphragm are inserted into the groove of the concave clamp plate and adjusted to the position corresponding to the center of the test mold. At the same time, screw hole one and screw hole two correspond to each other, and the screw passes through screw hole one and screw hole two to fix the metal diaphragm.

[0006] Furthermore, the distance between the upper and lower molds is slightly greater than the thickness of the metal diaphragm of the diaphragm compressor. When installing the metal diaphragm, it is necessary to first place the metal diaphragm into the test mold, and then start the test after the metal diaphragm is fixed.

[0007] Furthermore, the opposing surfaces of the upper and lower molds are both set as convex hemispheres. In industrial diaphragm compressors, the metal diaphragm clamps are mostly concave hemispheres. In order to simulate the stress state of the metal diaphragm in actual use to the greatest extent and ensure the accuracy of test data, the shapes of the upper and lower molds need to match the shape of the metal diaphragm clamps of the diaphragm compressor.

[0008] Furthermore, both the upper and lower molds are made of aluminum.

[0009] This invention also includes other devices or components that enable the testing device for the development of the diaphragm compressor to function properly, all of which are conventional techniques in the field. Furthermore, the upper and lower molds not specified in this invention employ conventional techniques in the field.

[0010] The working principle of this utility model is as follows: When using this device, the metal diaphragm needs to be placed in the center of the test mold first, and the two sides of the metal diaphragm are inserted into the grooves of the concave clamp plate and adjusted so that screw hole one and screw hole two correspond to each other. The screw passes through screw hole one and screw hole two to fix the metal diaphragm. After the metal diaphragm is fixed, the hydraulic cylinder controls the test mold to move up and down within a certain range to start the fatigue test on the metal diaphragm.

[0011] The beneficial effects of this invention are that it provides a testing device for selecting metal diaphragm materials for diaphragm compressors, tests the reliability of metal diaphragms, performs cyclic load tests on them, and simulates the stress state of the compressor in actual service to the greatest extent possible, ensuring the authenticity and reliability of the data from the symmetrical bending fatigue test of the metal diaphragm. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a side view of the test component in this utility model.

[0015] Figure 3 This is a schematic diagram illustrating the effect of repeated bending of the metal diaphragm in this utility model.

[0016] Figure 4 This is a schematic diagram of the clamping component in this utility model. Detailed Implementation

[0017] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0018] Example

[0019] like Figures 1-4 As shown, the present invention provides a testing device for the research and development of a diaphragm compressor, including a support 1 and a testing assembly. The support 1 is a rectangular frame support. The left and right frames of the support 1 are provided with clamping assemblies in the middle of their inner sides. The testing assembly includes a hydraulic cylinder 2 and a testing mold. The fixed end of the hydraulic cylinder 2 is connected to the inner side of the upper frame of the support 1, and the telescopic end of the hydraulic cylinder 2 is connected to the upper side of the testing mold. The testing mold includes an upper mold 3, a lower mold 4 and a connecting plate 5. The shapes of the upper mold 3 and the lower mold 4 match the shapes of the metal diaphragm clamps of the diaphragm compressor, and the upper mold 3 and the lower mold 4 are arranged vertically and vertically. The connecting plate 5 is fixedly connected to the rear side of the upper mold 3 and the lower mold 4.

[0020] As a further measure of this utility model, the clamping assembly includes a concave clamping plate 6 and a screw 7. The groove of the concave clamping plate 6 faces the center of the bracket 1, and the upper side of the concave clamping plate 6 is provided with a screw hole 8 perpendicular to the concave clamping plate 6. The screw hole 8 and the screw 7 are threadedly connected. The clamping assembly is used to fix the metal diaphragm, preventing the metal diaphragm from falling off or moving during testing, and ensuring the accuracy of the test results. The groove of the concave clamping plate 6 matches the metal diaphragm of the diaphragm compressor, and the metal diaphragm of the diaphragm compressor is provided with a corresponding screw hole 9. The metal diaphragm of the diaphragm compressor is inserted into the groove of the concave clamping plate 6. The screw 7 passes through the screw hole 8 and the screw hole 9 to fix the metal diaphragm of the diaphragm compressor. Both sides of the metal diaphragm are inserted into the groove of the concave clamping plate 6 and adjusted to match the test mold. At the corresponding center position, screw hole 8 and screw hole 9 correspond to each other, and screw 7 passes through screw hole 8 and screw hole 9 to fix the metal diaphragm; the distance between the upper mold 3 and the lower mold 4 is slightly greater than the thickness of the metal diaphragm of the diaphragm compressor. When installing the metal diaphragm, the metal diaphragm needs to be placed in the test mold first, and the test can begin after the metal diaphragm is fixed; the opposing surfaces of the upper mold 3 and the lower mold 4 are both set as convex hemispheres. Most of the metal diaphragm clamps commonly used in industrial diaphragm compressors are concave hemispheres. In order to simulate the stress state of the metal diaphragm in actual use to the greatest extent and ensure the accuracy of the test data, the shape of the upper mold 3 and the lower mold 4 needs to match the shape of the metal diaphragm clamp of the diaphragm compressor; both the upper mold 3 and the lower mold 4 are made of aluminum.

[0021] The working principle of this utility model is as follows: When using this device, the metal diaphragm needs to be placed in the center of the test mold first. The two sides of the metal diaphragm are inserted into the grooves of the concave clamp plate 6 and adjusted so that the screw hole 8 and the screw hole 9 correspond to each other. The screw 7 passes through the screw hole 8 and the screw hole 9 to fix the metal diaphragm. After the metal diaphragm is fixed, the hydraulic cylinder 2 controls the test mold to move up and down within a certain range to start the fatigue test on the metal diaphragm.

[0022] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A testing device for the research and development of diaphragm compressors, comprising a support frame and testing components, characterized in that: The support is a rectangular frame support. The left and right frames of the support are equipped with clamping components in the middle of their inner sides. The test component includes a hydraulic cylinder and a test mold. The fixed end of the hydraulic cylinder is connected to the inner side of the upper frame of the support, and the telescopic end of the hydraulic cylinder is connected to the upper side of the test mold. The test mold includes an upper mold, a lower mold, and a connecting plate. The shapes of the upper mold and the lower mold match the shapes of the metal diaphragm clamps of the diaphragm compressor, and the upper mold and the lower mold are arranged vertically and vertically. The connecting plate is fixedly connected to the rear side of the upper mold and the lower mold.

2. The testing device for the research and development of a diaphragm compressor according to claim 1, characterized in that: The clamping assembly includes a concave clamping plate and a screw. The groove of the concave clamping plate faces the center of the bracket, and a screw hole is provided on the upper side of the concave clamping plate perpendicular to the concave clamping plate. The screw hole and the screw are threadedly connected.

3. The testing device for the research and development of a diaphragm compressor according to claim 2, characterized in that: The groove of the concave clamp plate matches the metal diaphragm of the diaphragm compressor, and the metal diaphragm of the diaphragm compressor is provided with a corresponding screw hole two. The metal diaphragm of the diaphragm compressor is inserted into the groove of the concave clamp plate, and the screw passes through screw hole one and screw hole two to fix the metal diaphragm of the diaphragm compressor.

4. The testing device for the research and development of a diaphragm compressor according to claim 1, characterized in that: The distance between the upper and lower molds is slightly greater than the thickness of the metal diaphragm of the diaphragm compressor.

5. The testing device for the research and development of a diaphragm compressor according to claim 1, characterized in that: The opposing surfaces of the upper and lower molds are both set as hemispherical.

6. The testing device for the research and development of a diaphragm compressor according to claim 1, characterized in that: Both the upper and lower molds are made of aluminum.

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