Valve rubber abrasion performance testing device

Abstract

The utility model discloses a valve rubber abrasion performance testing device which comprises a testing frame table and a plurality of valve seat conical workpieces, valve raw rubber is fixedly sleeved on the valve seat conical workpieces, and a damage testing mechanism is arranged on the top in the testing frame table. According to the utility model, under the interaction of the testing frame table, the valve seat conical workpiece, the valve raw rubber sheet and the damage testing mechanism, the accurate pressing and positioning of a plurality of groups of valve raw rubber sheet samples can be simultaneously realized under the driving of the servo motor, the testing efficiency is obviously improved, and the driving motor in the damage testing mechanism is matched with a multi-claw embedding block, so that the testing efficiency is improved. The actual motion state of a conical workpiece of a valve seat can be accurately simulated, a dynamic friction test is realized in combination with a friction ring block, the reverse movement design of a compaction plate and a material storage block ensures that pressure loading and friction test are synchronously carried out, a composite load environment in an actual working condition is truly restored, and the test efficiency is improved. The problems that a traditional device is single in testing condition and disjointed with reality are effectively solved, and the accuracy and reliability of a testing result are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of petroleum extraction or mechanical engineering, and in particular to a device for testing the wear performance of valve rubber. Background Technology

[0002] In industries such as oil extraction and chemical processing, valves are crucial components for sealing and opening / closing, and their performance directly affects the reliability and service life of equipment. Valve sheets are primarily installed on tapered valve seats, achieving sealing through elastic deformation and withstanding the erosion, friction, and pressure of the medium during frequent opening and closing. Accurate testing of their wear performance is essential for optimizing product design and ensuring the safe operation of equipment.

[0003] Currently, existing valve wear performance testing devices suffer from two main problems during use: Firstly, most devices struggle to simultaneously simulate the pressure loading and dynamic friction environment under actual working conditions, leading to a disconnect between test results and real-world application scenarios. Secondly, the design of the sample fixation and driving structure during testing is often flawed, failing to guarantee the consistency and stability of test conditions. Furthermore, the operation is complex, making it difficult to achieve efficient parallel testing of multiple samples. Therefore, we propose a valve wear performance testing device to address these issues. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and to propose a device for testing the wear performance of valve rubber.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for testing the wear performance of valve rubber includes a test frame and multiple valve seat conical workpieces, wherein original valve rubber is fastened to the valve seat conical workpieces, and a damage testing mechanism is provided on the top of the test frame.

[0007] The damage testing mechanism includes a bidirectional threaded rod rotatably connected to the top of the test frame. Adjacent bidirectional threaded rods are connected by a chain drive. A servo motor is fixedly installed at the bottom of the test frame. The output end of the servo motor is fixedly connected to the end of one of the bidirectional threaded rods. A compaction plate and a storage block that slide against the inner wall of the test frame are threaded onto the outer wall of the bidirectional threaded rod. An installation hole is opened at the top of the storage block. The outer wall of the valve seat tapered workpiece slides on the inner wall of the installation hole. A friction ring block is fixedly installed at the top of the storage block. A drive motor is fixedly installed at the bottom of the installation hole. A multi-jaw fitting block that engages with the valve seat tapered workpiece is fixedly installed on the output shaft of the drive motor.

[0008] Preferably, a chain disc adapted to the chain is fitted on the outer wall of each of the two adjacent bidirectional threaded rods.

[0009] Preferably, the top of the compaction plate is provided with a first threaded hole adapted to the bidirectional threaded rod, and the top of the storage block is provided with a second threaded hole adapted to the bidirectional threaded rod. The outer wall of the bidirectional threaded rod is threadedly connected to the inner wall of both the first and second threaded holes, and the helical directions of the first and second threaded holes are opposite.

[0010] Preferably, the distance between any two adjacent bidirectional threaded rods is the same.

[0011] Preferably, the bottom of the compaction plate has a circular groove, and a rubber disc is rotatably connected to the inner wall of the circular groove. The mounting hole and the rubber disc are coaxially arranged.

[0012] Preferably, the valve seat tapered workpiece, mounting hole, friction ring block, and multi-claw interlocking block are arranged coaxially.

[0013] Preferably, an installation ring groove is provided on the outer wall of the storage block, and the friction ring block is slidably sleeved on the inner wall of the installation ring groove. The arc-shaped side of the friction ring block and the installation ring groove are detachably connected by multiple limiting bolts.

[0014] The beneficial effects of this utility model are as follows:

[0015] Through the interaction of the test frame, the valve seat conical workpiece, the original valve rubber, and the damage testing mechanism, the servo motor drive can simultaneously achieve precise clamping and positioning of multiple sets of original valve rubber samples, significantly improving testing efficiency. In the damage testing mechanism, the drive motor, in conjunction with the multi-jaw interlocking block, can accurately simulate the actual motion state of the valve seat conical workpiece. Combined with the friction ring block, dynamic friction testing is achieved. The reverse movement design of the compaction plate and the storage block ensures that pressure loading and friction testing are carried out simultaneously, truly restoring the composite load environment in actual working conditions. This effectively solves the problems of single testing conditions and disconnection from reality in traditional devices, improving the accuracy and reliability of test results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a valve rubber wear performance testing device proposed in this utility model;

[0017] Figure 2 This is a side sectional view of a valve rubber wear performance testing device proposed in this utility model;

[0018] Figure 3 This is a top view of the multi-claw interlocking block in a valve rubber wear performance testing device proposed in this utility model.

[0019] In the diagram: 1. Test frame; 2. Conical workpiece of valve seat; 3. Original valve rubber; 4. Bidirectional threaded rod; 5. Chain; 6. Servo motor; 7. Compactor plate; 8. Storage block; 9. Mounting hole; 10. Friction ring block; 11. Drive motor; 12. Multi-claw interlocking block; 13. Circular groove; 14. Rubber disc. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 A device for testing the wear performance of valve rubber includes a test frame 1 and multiple valve seat conical workpieces 2. A valve original rubber 3 is fastened onto the valve seat conical workpiece 2. A damage testing mechanism is installed on the top of the test frame 1. The damage testing mechanism includes a bidirectional threaded rod 4 rotatably connected to the top of the test frame 1. Adjacent bidirectional threaded rods 4 are connected by a chain 5. A servo motor 6 is fixedly installed at the bottom of the test frame 1. The output end of the servo motor 6 is fixedly connected to the end of one of the bidirectional threaded rods 4. A compaction plate 7 and a storage block 8, which slide against the inner wall of the test frame 1, are threaded onto the outer wall of the bidirectional threaded rod 4. The storage block 8 has a mounting hole 9 at its top. The outer wall of the valve seat conical workpiece 2 slides on the inner wall of the mounting hole 9. A friction ring block 10 is fixedly installed on the top of the storage block 8. A drive motor 11 is fixedly installed at the bottom of the mounting hole 9. A multi-claw fitting block 12, which engages with the valve seat conical workpiece 2, is fixedly installed on the output shaft of the drive motor 11.

[0022] To further explain, the servo motor 6 drives the bidirectional threaded rod 4 to achieve synchronous reverse movement of the compaction plate 7 and the storage block 8, which can simultaneously clamp and fix the original valve rubber 3 on multiple valve seat conical workpieces 2 and prepare them for testing, greatly improving testing efficiency. The drive motor 11, in conjunction with the multi-jaw interlocking block 12, drives the valve seat conical workpiece 2 to rotate, causing the original valve rubber 3 to generate relative friction with the friction ring block 10, simulating actual wear conditions, which facilitates the testing of wear performance. The components of the damage testing mechanism work together, and the structure is compact and reasonable, providing a stable and reliable testing platform for the wear performance testing of the original valve rubber 3.

[0023] like Figure 1 As shown, each of the two adjacent bidirectional threaded rods 4 has a chain disc fitted on its outer side wall, which is compatible with the chain 5.

[0024] To further explain, the chain 5 drives the multiple bidirectional threaded rods 4 to rotate synchronously, thereby ensuring the consistency of movement of the multiple compaction plates 7 and storage blocks 8. This makes the test conditions on each valve seat conical workpiece 2 the same, improving the accuracy and comparability of the test results and avoiding test errors caused by asynchronous movement of each test unit.

[0025] like Figure 2 As shown, the top of the compaction plate 7 is provided with a first threaded hole that matches the bidirectional threaded rod 4, and the top of the storage block 8 is provided with a second threaded hole that matches the bidirectional threaded rod 4. The outer wall of the bidirectional threaded rod 4 is threadedly connected to the inner wall of the first threaded hole and the second threaded hole, and the spiral directions of the first threaded hole and the second threaded hole are opposite.

[0026] To further explain, this design allows the compaction plate 7 and the storage block 8 to move in opposite directions when the bidirectional threaded rod 4 rotates. Driven by a power source (servo motor 6), they simultaneously clamp and fix the valve seat tapered workpiece 2 and push it to the test position. This simplifies the mechanical structure, reduces the number of driving components, lowers equipment costs, and improves the stability and reliability of the device operation.

[0027] like Figure 1 As shown, the distance between two adjacent bidirectional threaded rods 4 is the same.

[0028] To further explain, this design ensures that the multiple original valve rubber sheets 3 are evenly distributed, so that the test conditions such as pressure and friction on each valve seat conical workpiece 2 are uniform and consistent. This is beneficial to improving the accuracy and reliability of the test results, facilitating the comparative analysis of test data of different original valve rubber sheets 3, and also facilitating the standardized production and maintenance of the device.

[0029] like Figure 1 and Figure 2 As shown, a circular groove 13 is provided at the bottom of the compaction plate 7, and a rubber disc 14 is rotatably connected to the inner wall of the circular groove 13. The mounting hole 9 and the rubber disc 14 are coaxially arranged.

[0030] To further explain, when compacting the conical valve seat 2, the rubber disc 14 can rotate with the conical valve seat 2, reducing the frictional resistance between the compaction plate 7 and the conical valve seat 2. This avoids the normal rotation of the conical valve seat 2 due to excessive frictional resistance, ensuring the smooth progress of the test process. At the same time, the rubber disc 14 can also play a certain buffering role, preventing damage to the conical valve seat 2 and the original valve rubber 3.

[0031] like Figure 1 and Figure 2 As shown, the valve seat tapered workpiece 2, mounting hole 9, friction ring block 10 and multi-claw fitting block 12 are arranged coaxially.

[0032] To further explain, this design ensures that the friction force on the original valve rubber 3 is evenly distributed during the test, avoiding uneven wear due to eccentricity, which would affect the accuracy of the test results. At the same time, the coaxial setting also ensures the transmission efficiency between the components, so that the power of the drive motor 11 can be stably transmitted to the valve seat conical workpiece 2, ensuring the stability and reliability of the test.

[0033] like Figure 1 and Figure 2 As shown, an installation ring groove is provided on the outer wall of the storage block 8, and the friction ring block 10 is slidably sleeved on the inner wall of the installation ring groove. The arc-shaped side of the friction ring block 10 and the installation ring groove are detachably connected by multiple limiting bolts.

[0034] To further explain, this design allows the friction ring block 10 to be detachably connected, making it convenient to replace the friction ring block 10 with different materials and roughness according to different testing needs, so as to simulate the wear conditions under different working conditions, improve the versatility and adaptability of the device, meet diverse testing requirements, and also facilitate the maintenance and replacement of the friction ring block 10, reducing equipment maintenance costs.

[0035] The functional principle of this utility model can be explained through the following operation methods:

[0036] First set of experiments: Wear test with the same rotational speed and the same coefficient of friction

[0037] Install friction ring blocks 10 and samples: Fix friction ring blocks 10 with the same friction coefficient in the mounting ring grooves of each storage block 8 with limit bolts to ensure that each friction ring block 10 is installed firmly and has good coaxiality. Then, tighten different valve rubber sheets 3 onto the valve seat conical workpiece 2 and insert them into the mounting holes 9 of the corresponding storage block 8 so that the multi-claw interlocking block 12 is completely interlocked with the bottom of the valve seat conical workpiece 2.

[0038] Set the speed of drive motor 11: Through the equipment control system, set the output shaft speed of all drive motors 11 to the same value, such as 800 r / min. After setting, start the speed calibration function to ensure that the actual speed error of each drive motor 11 is within a very small range and to ensure that the test conditions are consistent.

[0039] Start-up test: Turn on the servo motor 6 to drive the bidirectional threaded rod 4 to rotate, causing the compaction plate 7 and the storage block 8 to move in opposite directions. The compaction plate 7 moves downward until the rubber disc 14 presses the top of the valve seat conical workpiece 2 with stable pressure. The storage block 8 moves upward so that the original valve rubber 3 is in close contact with the friction ring block 10. After the compaction is stable, start all drive motors 11 at the same time, so that the valve seat conical workpiece 2 drives the original valve rubber 3 to rotate at the set speed, and start the wear test.

[0040] Data monitoring and recording: During the test, the built-in sensor of the device is used to record the wear degree, temperature and other data of the original Valve rubber 3 at fixed intervals (e.g., 5 minutes). At the same time, observe whether the test device is running smoothly and whether there is any abnormal vibration or noise.

[0041] End of test and analysis: When the predetermined test time (e.g., 60 minutes) is reached, first turn off the drive motor 11, wait for the valve seat conical workpiece 2 to completely stop rotating, then turn off the servo motor 6, take out all test samples, use professional measuring tools, such as a high-precision micrometer, to measure the wear of the original valve rubber 3, and organize and analyze the data to compare the wear performance differences of different samples.

[0042] The second set of experiments: Wear tests at the same rotational speed but with different coefficients of friction.

[0043] Preparation and Installation: Prepare friction ring blocks 10 with different friction coefficients, such as friction ring blocks 10 with friction coefficients of 0.3, 0.5 and 0.7 respectively. Install the friction ring blocks 10 with different friction coefficients into the corresponding storage block 8 mounting ring grooves and mark them for identification. Then, fasten the same model and specification of valve original rubber 3 onto the valve seat conical workpiece 2 and install it into the corresponding storage block 8 mounting hole 9 to ensure a firm installation.

[0044] Set a uniform speed: Similar to the first group of experiments, set the output shaft speed of all drive motors 11 to the same value, such as 800 r / min, and perform speed calibration to ensure that the speed of each motor is consistent.

[0045] Start-up test: Turn on the servo motor 6 to complete the compaction operation on the valve seat conical workpiece 2. After the compaction is stable, start all drive motors 11 at the same time to make the valve seat conical workpiece 2 drive the original valve rubber 3 to rotate, and generate relative friction with the friction ring block 10 with different friction coefficients to start the test.

[0046] Data acquisition and observation: During the test, wear data of each test unit is recorded in real time, including wear amount and wear rate, and the wear pattern and trend of the original valve rubber 3 are closely observed under different friction coefficients.

[0047] Test completion and summary: After the predetermined test time is reached, stop the drive motor 11 and servo motor 6, remove the original valve rubber 3, measure and record the final wear of each original valve rubber 3, compare and analyze the influence of different friction coefficients on the wear performance of the original valve rubber 3, and summarize the rules.

[0048] The third set of experiments: Wear tests at different rotational speeds with the same coefficient of friction.

[0049] Install friction ring blocks 10 and samples: Select friction ring blocks 10 with the same coefficient of friction and install them into the mounting ring grooves of all storage blocks 8. Tightly attach the original valve rubber 3 of the same batch and specification to the valve seat conical workpiece 2 and install it into the mounting hole 9 of the corresponding storage block 8 to ensure that the installation position is accurate.

[0050] Set different speeds: Divide the drive motor 11 into several groups, and set different output shaft speeds for each group of drive motor 11 through the equipment control system. For example, the first group is 600 r / min, the second group is 800 r / min, and the third group is 1000 r / min. After setting, calibrate the speed of each group of motors to ensure that the actual speed meets the set value.

[0051] Start-up test: Turn on the servo motor 6 to move the compaction plate 7 and the storage block 8 to compact the valve seat conical workpiece 2. After compaction, start the drive motor 11 in groups according to the set speed. Start the first group first. After running for a period of time without any abnormalities, start the other groups in sequence to start the test.

[0052] Monitoring and Recording: During the test, the speed of each drive motor 11 was monitored in real time to see if it was stable, as well as the wear of the original valve rubber 3. Wear data was recorded at fixed intervals, and the wear characteristics and wear rate differences of the original valve rubber 3 at different speeds were observed.

[0053] End of test and analysis: After all groups have reached the predetermined test time, stop the drive motor 11 and servo motor 6, take out the samples, measure and record the wear of each original valve rubber 3, analyze the influence of different rotation speeds on the wear performance of the original valve rubber 3, and obtain the relationship between rotation speed and wear performance.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for testing the wear performance of valve rubber, comprising a test frame (1) and a plurality of valve seat conical workpieces (2), wherein original valve rubber (3) is fastened onto the valve seat conical workpieces (2), characterized in that, A damage testing mechanism is provided on the top of the test frame (1); The damage testing mechanism includes a bidirectional threaded rod (4) rotatably connected to the top of the test frame (1). Two adjacent bidirectional threaded rods (4) are connected by a chain (5). A servo motor (6) is fixedly installed at the bottom of the test frame (1). The output end of the servo motor (6) is fixedly connected to the end of one of the bidirectional threaded rods (4). A compaction plate (7) and a storage block (8) that slide against the inner wall of the test frame (1) are threaded onto the outer wall of the bidirectional threaded rod (4). An installation hole (9) is opened at the top of the storage block (8). The outer wall of the valve seat conical workpiece (2) slides on the inner wall of the installation hole (9). A friction ring block (10) is fixedly installed at the top of the storage block (8). A drive motor (11) is fixedly installed at the bottom of the installation hole (9). A multi-claw fitting block (12) that fits into the valve seat conical workpiece (2) is fixedly installed on the output shaft of the drive motor (11).

2. A device for testing the wear properties of a valve rubber according to claim 1, characterized in that Each of the two adjacent bidirectional threaded rods (4) is fitted with a chain disc that is compatible with the chain (5) on its outer side wall.

3. The device for testing the wear performance of valve rubber according to claim 1, characterized in that, The top of the compaction plate (7) is provided with a first threaded hole that is compatible with the bidirectional threaded rod (4), and the top of the storage block (8) is provided with a second threaded hole that is compatible with the bidirectional threaded rod (4). The outer wall of the bidirectional threaded rod (4) is threadedly connected to the inner wall of the first threaded hole and the second threaded hole. The spiral directions of the first threaded hole and the second threaded hole are opposite.

4. The device for testing the wear performance of valve rubber according to claim 1, characterized in that, The distance between any two adjacent bidirectional threaded rods (4) is the same.

5. A valve leather wear performance testing device as set forth in claim 1 wherein, The compaction plate (7) has a circular groove (13) at its bottom, and a rubber disc (14) is rotatably connected to the inner wall of the circular groove (13). The mounting hole (9) and the rubber disc (14) are coaxially arranged.

6. The device for testing the wear performance of valve rubber according to claim 1, characterized in that, The valve seat tapered workpiece (2), mounting hole (9), friction ring block (10) and multi-claw fitting block (12) are arranged coaxially.

7. A valve leather wear performance testing device as in claim 1, wherein, The storage block (8) has an installation ring groove on its outer side wall. The friction ring block (10) is slidably sleeved on the inner side wall of the installation ring groove. The arc-shaped side of the friction ring block (10) and the installation ring groove are detachably connected by multiple limiting bolts.

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