Ball valve torque dynamic simulation detection device

Abstract

The utility model discloses a ball valve torque dynamic simulation detection device, particularly relates to the ball valve detection field, and comprises a work bench, support columns are arranged on the upper surface of the work bench, the top parts of the support columns are connected with limiting blocks, a lifting top plate is arranged above the support columns in a penetrating manner, and the lifting top plate is connected with the limiting blocks. Fixed connecting frames are connected to the middles of the supporting columns on the two sides, threaded cylinders are connected to the centers of the tops of the fixed connecting frames through bearings, threaded ejector rods are connected to the inner walls of the tops of the threaded cylinders in a threaded mode, and first servo motors are arranged at the bottoms of the fixed connecting frames; the first servo motor drives the threaded cylinder to rotate, the threaded cylinder rotates to drive the threaded ejector rod to ascend and descend, the threaded ejector rod ascends and descends to drive the lifting ejector plate to ascend and descend synchronously, and therefore the height of the threaded ejector rod is adjusted; therefore, valve rods of different types of ball valves can be clamped, and torque detection can be carried out.

Description

Technical Field

[0001] The utility model relates to the field of ball valve detection, and more specifically, to a ball valve torque dynamic simulation detection device. Background Art

[0002] A ball valve is a common valve type. Its main function is to quickly open, close, and regulate the medium in the pipeline. Torque testing is a necessary inspection procedure for ball valves before they leave the factory. The sealing performance of the ball valve can be judged by torque testing under pressure.

[0003] After searching, an existing patent (publication number: CN108844732A) discloses a polyethylene ball valve detection device, which relates to the technical field of valve detection and includes at least a base, a torque sensor and a motor. The base includes an upper base plate and a lower base plate; the torque sensor is located between the upper base plate and the lower base plate, and the central axis of the torque sensor is longitudinal. The lower end of the torque sensor is driven to rotate by the motor, and a valve stem connection block is fixed to the upper end. The top of the valve stem connection block is provided with a strip groove that can be engaged with the ball valve stem. A ball valve positioning mechanism is provided on the upper surface of the upper base plate. The ball valve positioning mechanism includes a left positioning seat and a right positioning seat. The left positioning seat is provided with a left positioning bayonet for positioning the left pipe of the ball valve, and the right positioning seat is provided with a right positioning bayonet for positioning the right pipe of the ball valve. In order to solve the problem of poor accuracy of the existing use of a torque wrench to directly detect the torque of a polyethylene ball valve, this invention proposes a polyethylene ball valve detection device with high accuracy and easy operation. In the process of realizing this utility model, the inventor found that the existing technology has the following problems:

[0004] At present, ball valve torque detection devices are often clamped at a fixed horizontal height. When testing ball valves of different models, the height of the valve stem cannot be adjusted. At the same time, they often do not have the ability to simulate the torque requirements of ball valves in different situations, thereby testing the torque required by ball valves under different pressures.

[0005] Therefore, in order to solve the above problems, a ball valve torque dynamic simulation detection device is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a ball valve torque dynamic simulation detection device to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ball valve torque dynamic simulation detection device, comprising a workbench, the upper surface of the workbench is arranged with support columns, the top of the support columns is connected to a limiting block, a lifting top plate is provided above the support columns, the middle parts of the support columns on both sides are connected to a fixed connecting frame, the top center of the fixed connecting frame is connected to a threaded barrel through a bearing, the top inner wall of the threaded barrel is threadedly connected to a threaded push rod, the top of the threaded push rod is connected to the lifting top plate, and a No. 1 servo motor is provided at the bottom of the fixed connecting frame. The output end of the No. 1 servo motor is connected to the threaded barrel, and the No. 1 servo motor drives the threaded barrel to rotate. The rotation of the threaded barrel drives the threaded push rod to move up and down. The lifting of the threaded push rod drives the lifting top plate to move up and down synchronously. The bottom center of the lifting top plate is connected to a drive shaft through a bearing. The bottom end of the drive shaft is connected to a torque sensor. The top of the lifting top plate is connected to the No. 2 servo motor, and the output end of the No. 2 servo motor is connected to the drive shaft. The No. 2 servo motor drives the drive shaft to rotate. The rotation of the drive shaft drives the torque sensor to rotate synchronously.

[0008] Preferably, the bottom of the torque sensor is connected to a connecting plate, the bottom end of the connecting plate is provided with a limiting groove, the middle of the limiting groove is connected to a bidirectional threaded rod through a bearing, and the opposite threads on both sides of the bidirectional threaded rod are threadedly connected to moving blocks.

[0009] Preferably, limit rods are provided on both sides of the bidirectional threaded rod, and the limit rods pass through the inner wall of the moving block. The bottom ends of the two groups of moving blocks are connected to clamping plates, and the opposite sides of the two groups of clamping plates are connected to anti-slip pads.

[0010] Preferably, a No. 3 servo motor is provided on one side of the connecting plate, and the output end of the No. 3 servo motor is connected to the bidirectional threaded rod.

[0011] Preferably, a placing table is provided at the top center of the workbench, and telescopic cylinders are provided on both sides of the placing table. The output end of the telescopic cylinder is connected to a connecting column, and a ventilation cavity is provided inside the connecting column. The end of the connecting column away from the telescopic cylinder is connected to a sealing rubber pad, and a ventilation groove is provided in the middle of the sealing rubber pad.

[0012] Preferably, the top of the connecting column is connected to an air pipe, the air pipe is connected to the ventilation cavity, an air pump is provided on the side of the air pipe away from the connecting column, a pressure sensor is provided inside the ventilation cavity, and a control cabinet is provided on one side of the placement table.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. Compared with the existing technology, this ball valve torque dynamic simulation detection device drives the threaded barrel to rotate through a No. 1 servo motor. The rotation of the threaded barrel drives the threaded push rod to move up and down. The lifting of the threaded push rod drives the lifting top plate to move up and down synchronously, thereby realizing the adjustment of the height of the threaded push rod, so that the valve stem can be clamped for different types of ball valves, thereby performing torque detection.

[0015] 2. Compared with the existing technology, the air pump of the ball valve torque dynamic simulation detection device can inflate the ventilation cavity through the air pipe. The ventilation cavity is connected to the inside of the ball valve so that gas can enter the valve cavity. By adjusting the power of the air pump, the air pressure in the ventilation cavity and the ball valve cavity can be changed, thereby simulating the state of the ball valve working under different pressures. By testing the torque of the ball valve under different pressures, the torque required for its opening and closing can be adjusted to adapt to the torque requirements in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the connection structure between the fixed connecting frame and the threaded barrel in this utility model.

[0018] Figure 3 This is a schematic diagram of the bottom structure of the connecting plate of the utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the practical connecting column.

[0020] The accompanying drawings are marked as follows: 1. workbench; 2. support column; 3. limit block; 4. lifting top plate; 5. fixed connecting frame; 6. threaded cylinder; 7. threaded top rod; 8. No. 1 servo motor; 9. drive shaft; 10. torque sensor; 11. No. 2 servo motor; 12. connecting plate; 13. limit groove; 14. bidirectional threaded rod; 15. moving block; 16. limit rod; 17. clamping plate; 18. anti-slip pad; 19. No. 3 servo motor; 20. placing table; 21. telescopic cylinder; 22. connecting column; 23. ventilation chamber; 24. sealing rubber pad; 25. ventilation groove; 26. air pipe; 27. air pump; 28. pressure sensor; 29. ​​control cabinet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] As attached Figures 1 to 3 The ball valve torque dynamic simulation detection device shown in the figure includes a workbench 1, the upper surface of the workbench 1 is arranged with support columns 2, the top of the support columns 2 is connected to a limit block 3, a lifting top plate 4 is provided above the support columns 2, the middle of the support columns 2 on both sides are connected to a fixed connecting frame 5, the top center of the fixed connecting frame 5 is connected to a threaded barrel 6 through a bearing, the top inner wall of the threaded barrel 6 is threadedly connected to a threaded push rod 7, the top of the threaded push rod 7 is connected to the lifting top plate 4, and a No. 1 servo motor 8 is provided at the bottom of the fixed connecting frame 5, and the output end of the No. 1 servo motor 8 is connected to the threaded barrel 6. The No. 1 servo motor 8 drives the threaded barrel 6 to rotate, and the rotation of the threaded barrel 6 drives the threaded top rod 7 to move up and down. The lifting of the threaded top rod 7 drives the lifting top plate 4 to move up and down synchronously. The bottom center of the lifting top plate 4 is connected to the drive shaft 9 through a bearing. The bottom end of the drive shaft 9 is connected to the torque sensor 10. The top of the lifting top plate 4 is connected to the No. 2 servo motor 11. The output end of the No. 2 servo motor 11 is connected to the drive shaft 9. The No. 2 servo motor 11 drives the drive shaft 9 to rotate, and the rotation of the drive shaft 9 drives the torque sensor 10 to rotate synchronously.

[0024] Among them: the threaded barrel 6 is driven to rotate by the No. 1 servo motor 8, the threaded barrel 6 rotates to drive the threaded push rod 7 to move up and down, the lifting of the threaded push rod 7 drives the lifting top plate 4 to move up and down synchronously, thereby realizing the adjustment of the height of the threaded push rod 7, so that the valve stem can be clamped for different types of ball valves, thereby detecting the torque, and the drive shaft 9 is driven to rotate by the No. 2 servo motor 11, and the rotation of the drive shaft 9 drives the torque sensor 10 to rotate synchronously, and the torque of the current rotation can be detected by the torque sensor 10, so that the valve stem of the ball valve can be twisted to detect the torque.

[0025] Example 2

[0026] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 4 As shown, see the following description for details:

[0027] As a preferred embodiment, the bottom of the torque sensor 10 is connected to a connecting plate 12, and a limiting groove 13 is provided at the bottom end of the connecting plate 12. The middle part of the limiting groove 13 is connected to a bidirectional threaded rod 14 through a bearing, and the opposite threads on both sides of the bidirectional threaded rod 14 are threadedly connected to moving blocks 15; further, the bidirectional threaded rod 14 can rotate in the limiting groove 13, and the rotation of the bidirectional threaded rod 14 drives the moving blocks 15 on the opposite threads on both sides to perform translational movement in opposite directions.

[0028] As a preferred embodiment, limit rods 16 are provided on both sides of the bidirectional threaded rod 14, and the limit rods 16 pass through the inner wall of the moving block 15. The bottom ends of the two groups of moving blocks 15 are connected to clamping plates 17, and the opposite sides of the two groups of clamping plates 17 are connected to anti-slip pads 18; further, the limit rods 16 play a limiting role, and are driven by the No. 3 servo motor 19 to rotate the bidirectional threaded rod 14. The rotation of the bidirectional threaded rod 14 drives the moving blocks 15 at the opposite threads on both sides to perform translational movement in opposite directions. The movement of the two groups of moving blocks 15 drives the clamping plates 17 on both sides to rotate in opposite directions, thereby clamping the valve stem of the ball valve. The anti-slip pads 18 increase the friction to prevent slipping. The No. 1 servo motor 8 can drive the clamping plates 17 on both sides to twist the valve stem. During the twisting process, the current rotation torque can be detected by the torque sensor 10. By dynamically simulating the torque, the torque required for opening and closing the ball valve can be tested and adjusted.

[0029] As a preferred embodiment, a No. 3 servo motor 19 is provided on one side of the connecting plate 12, and the output end of the No. 3 servo motor 19 is connected to the bidirectional threaded rod 14; further, the No. 3 servo motor 19 plays a driving role and can drive the bidirectional threaded rod 14 to rotate.

[0030] As a preferred embodiment, a placing table 20 is provided at the top center of the workbench 1, and a telescopic cylinder 21 is provided on both sides of the placing table 20. The output end of the telescopic cylinder 21 is connected to a connecting column 22, and a ventilation cavity 23 is provided inside the connecting column 22. The end of the connecting column 22 away from the telescopic cylinder 21 is connected to a sealing rubber pad 24, and a ventilation groove 25 is provided in the middle of the sealing rubber pad 24; further, the ball valve to be tested can be placed on the top of the placing table 20, and the telescopic cylinders 21 on both sides can push the connecting column 22 to perform translational movement, thereby driving the sealing rubber pads 24 on one side of the connecting columns 22 on both sides to abut and squeeze against the openings on both sides of the ball valve. The sealing rubber pad 24 is made of rubber material, which increases the sealing performance with the ball valve, and the cavity inside the ball valve can be connected to the ventilation cavity 23 through the ventilation groove 25.

[0031] As a preferred embodiment, the top of the connecting column 22 is connected with an air pipe 26, which is connected to the ventilation cavity 23. An air pump 27 is provided on the side of the air pipe 26 away from the connecting column 22, and a pressure sensor 28 is provided inside the ventilation cavity 23. A control cabinet 29 is provided on one side of the placement table 20; further, the air pump 27 can inflate the ventilation cavity 23 through the air pipe 26, and the ventilation cavity 23 is connected to the inside of the ball valve so that gas can enter the valve cavity. By adjusting the power of the air pump 27, the air pressure in the ventilation cavity 23 and the ball valve cavity can be changed, thereby simulating the state of the ball valve working under different pressures. By testing the torque of the ball valve under different pressures, the torque required for its opening and closing can be determined, so as to adapt to the torque requirements in different situations. At the same time, the current pressure inside the ventilation cavity 23 can be detected by the pressure sensor 28. The pressure detected by the pressure sensor 28 and the torque detected by the torque sensor 10 can be transmitted to the control cabinet 29 through wires for recording for observation.

[0032] The working process of the utility model is as follows: first, the ball valve to be tested is placed on the top of the placement table 20, and the threaded cylinder 6 is driven by the No. 1 servo motor 8 to rotate, and the rotation of the threaded cylinder 6 drives the threaded push rod 7 to lift and lower, and the lifting of the threaded push rod 7 drives the lifting top plate 4 to lift and lower synchronously, thereby realizing the adjustment of the height of the threaded push rod 7. When the lifting top plate 4 moves to the required height, the bidirectional threaded rod 14 is driven by the No. 3 servo motor 19 to rotate, and the rotation of the bidirectional threaded rod 14 drives the moving blocks 15 at the opposite threads on both sides to perform translational movement in opposite directions. The movement of the two sets of moving blocks 15 drives the clamping plates 17 on both sides to rotate in opposite directions, thereby clamping the valve stem of the ball valve, and the anti-slip pad 18 increases the friction to prevent slipping. The connecting column 22 can be pushed to translate by the telescopic cylinders 21 on both sides, thereby driving the sealing rubber pads 24 on one side of the connecting column 22 on both sides to abut and squeeze the openings on both sides of the ball valve. The sealing rubber pads 24 are made of rubber material to increase the sealing performance with the ball valve.

[0033] The cavity inside the ball valve can be connected to the ventilation cavity 23 through the ventilation groove 25. The air pump 27 can inflate the ventilation cavity 23 through the air pipe 26. The ventilation cavity 23 is connected to the interior of the ball valve, allowing gas to enter the valve cavity. By adjusting the power of the air pump 27, the air pressure in the ventilation cavity 23 and the ball valve cavity can be changed, thereby simulating the state of the ball valve when working under different pressures. The first servo motor 8 can drive the clamping plates 17 on both sides to twist the valve stem. During the twisting process, the current rotation torque can be detected by the torque sensor 10. By dynamically simulating the torque, the torque required for opening and closing the ball valve can be tested and adjusted. By testing the torque of the ball valve under different pressures, the torque required for opening and closing can be adjusted to meet the torque requirements in different situations. At the same time, the pressure inside the ventilation cavity 23 can be detected by the pressure sensor 28. The pressure signal detected by the pressure sensor 28 and the torque signal detected by the torque sensor 10 can be transmitted via wires to the control cabinet 29 for recording and observation. The above is the working principle of the ball valve torque dynamic simulation detection device.

Claims

1. A ball valve torque dynamic simulation detection device, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is provided with support columns (2), the top of the support columns (2) is connected to a limit block (3), a lifting top plate (4) is provided above the support columns (2), the middle of the support columns (2) on both sides are connected to a fixed connecting frame (5), the top center of the fixed connecting frame (5) is connected to a threaded cylinder (6) through a bearing, the top inner wall of the threaded cylinder (6) is threadedly connected to a threaded top rod (7), the top of the threaded top rod (7) is connected to the lifting top plate (4), and a servo motor (8) is provided at the bottom of the fixed connecting frame (5), the output end of the servo motor (8) is connected to the threaded cylinder (6), and the servo motor (8) is connected to the threaded cylinder (6). The motor (8) drives the threaded barrel (6) to rotate, and the threaded barrel (6) rotates to drive the threaded top rod (7) to move up and down, and the lifting of the threaded top rod (7) drives the lifting top plate (4) to move up and down synchronously. The bottom center of the lifting top plate (4) is connected to a driving shaft (9) through a bearing, and the bottom end of the driving shaft (9) is connected to a torque sensor (10). The top of the lifting top plate (4) is connected to a No. 2 servo motor (11), and the output end of the No. 2 servo motor (11) is connected to the driving shaft (9). The No. 2 servo motor (11) drives the driving shaft (9) to rotate, and the rotation of the driving shaft (9) drives the torque sensor (10) to rotate synchronously.

2. A ball valve torque dynamic simulation detection device according to claim 1, characterized in that: The bottom of the torque sensor (10) is connected to a connecting plate (12), the bottom end of the connecting plate (12) is provided with a limiting groove (13), the middle of the limiting groove (13) is connected to a bidirectional threaded rod (14) through a bearing, and the two opposite threads on both sides of the bidirectional threaded rod (14) are both threadedly connected to a moving block (15).

3. The ball valve torque dynamic simulation detection device according to claim 2, characterized in that: Limiting rods (16) are provided on both sides of the bidirectional threaded rod (14), and the limiting rods (16) pass through the inner wall of the moving block (15). The bottom ends of the two groups of moving blocks (15) are connected to clamping plates (17), and the opposite sides of the two groups of clamping plates (17) are connected to anti-slip pads (18).

4. A ball valve torque dynamic simulation detection device according to claim 3, characterized in that: A third servo motor (19) is provided on one side of the connecting plate (12), and an output end of the third servo motor (19) is connected to a bidirectional threaded rod (14).

5. The ball valve torque dynamic simulation detection device according to claim 1, characterized in that: A placing platform (20) is provided at the top center of the workbench (1), and telescopic cylinders (21) are provided on both sides of the placing platform (20). The output end of the telescopic cylinder (21) is connected to a connecting column (22), and a ventilation cavity (23) is provided inside the connecting column (22). The end of the connecting column (22) away from the telescopic cylinder (21) is connected to a sealing rubber pad (24), and a ventilation groove (25) is provided in the middle of the sealing rubber pad (24).

6. The ball valve torque dynamic simulation detection device according to claim 5, characterized in that: The top of the connecting column (22) is connected to an air pipe (26), the air pipe (26) is connected to the ventilation cavity (23), an air pump (27) is provided on the side of the air pipe (26) away from the connecting column (22), a pressure sensor (28) is provided inside the ventilation cavity (23), and a control cabinet (29) is provided on one side of the placement table (20).

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