Valve torque test bench

Abstract

The utility model discloses a valve torque testboard, which comprises a support, an upper plate and a bottom plate, the upper plate is fixed at the top of the support, and the bottom plate is fixed in the middle of the support. The upper plate is provided with a rotating mechanism which is used for fixing an external test valve and synchronously rotates along with the external valve, and a braking mechanism which is fixed at the bottom of the upper plate and is used for braking the rotating mechanism; the rotating mechanism comprises a three-jaw chuck used for fixing an external test valve and a rotating disc, the three-jaw chuck is connected with the rotating disc through a rotating shaft to drive the rotating disc and the external test valve to rotate synchronously, and a torque sensor used for measuring the torque of the valve is detachably arranged between the three-jaw chuck and the upper plate. A power source and a control mechanism which is connected with the brake mechanism and drives the brake mechanism are arranged on the bottom plate, and the power source and the control mechanism are connected with and drive the control mechanism; the device has the advantages that the whole testing process is high in automation degree and small in braking force control error, so that the obtained torque force is more accurate, and a large amount of manpower is not consumed.

Description

Technical Field

[0001] The utility model relates to the technical field of valve testing, in particular to a valve torque testing platform. Background Art

[0002] The operating torque of electric valves is larger than that of ordinary valves. The switching speed of electric valves can be adjusted. They have a simple structure and are easy to maintain. They can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

[0003] Valves play a key role in pipeline systems. They can control the flow and pressure of pipelines. If the valve cannot be opened or closed normally, it will cause chaos and danger in the pipeline system. The valve torque test is an important means to measure the opening and closing torque of the valve. By testing the opening and closing force of the valve, the quality, performance and reliability of the valve can be judged.

[0004] The existing patent authorization announcement number is: CN 203011596 U and the name is: In the actuator torque test device, the braking force of the brake is adjusted by cooperating with the oil pipe and the reversing valve. The reversing valve in CN 203011596 U adopts a manual reversing valve. Since the manual reversing valve relies on manual adjustment, the controlled braking force deviation is large. Therefore, the torque force error of the test valve is large. At the same time, it requires a lot of labor and has a low degree of automation.

[0005] Therefore, it is necessary to design a valve torque test bench with high automation and relatively accurate test results. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the existing patent relies on manual adjustment of the braking force of the brake to obtain the torque force of the external test valve under different load conditions, and the torque force measured by manual adjustment has a large error and requires a lot of labor, and the degree of automation is low.

[0007] The utility model drives the control mechanism through a driving source to drive the braking mechanism, and then provides a certain load for the external test valve currently being tested through the braking force generated by the driving braking mechanism. The torque force of the external test valve at this time is obtained in combination with the torque sensor. The entire test process has a high degree of automation and a small error in controlling the braking force, so that the torque force obtained is more accurate and does not require a lot of manpower.

[0008] The technical solutions adopted are:

[0009] A valve torque test bench, the test bench comprises a bracket, an upper plate and a bottom plate, the upper plate is fixed on the top of the bracket, the bottom plate is fixed on the middle of the bracket, the upper plate is provided with a rotating mechanism for fixing an external test valve and rotating synchronously with the external valve, and a braking mechanism fixed on the bottom of the upper plate for braking the rotating mechanism and providing a load to the rotating mechanism; the rotating mechanism comprises a three-jaw chuck and a turntable for fixing the external test valve, the three-jaw chuck is connected to the turntable through a rotating shaft to drive the turntable and the external test valve to rotate synchronously, and a torque sensor for measuring the valve torque is detachably provided between the three-jaw chuck and the upper plate; a power source and a control mechanism connected to the braking mechanism to drive the braking mechanism are provided on the bottom plate, and the power source is connected to the control mechanism to drive the braking mechanism.

[0010] The utility model drives the control mechanism through the cooperation of the power source and the transmission mechanism, so that the control mechanism reduces the braking error of the driving brake mechanism, and cooperates with the torque sensor to obtain a more accurate torque force of the tested external test valve.

[0011] For further optimization of the technical solution of the utility model, an upper flange and a lower flange for protecting the rotating shaft are provided between the three-jaw chuck and the upper plate, the torque sensor is fixed between the upper flange and the lower flange, the lower flange is fixed on the upper plate, and the upper flange is fixed on the torque sensor. The upper flange and the lower flange are used to protect the rotating shaft while facilitating the disassembly of the torque sensor, which is convenient for regular inspection, maintenance and replacement.

[0012] In a further optimization of the technical solution of the utility model, the three-jaw chuck is connected to the rotating shaft through a first coupling to drive the turntable to rotate synchronously, so that when the subsequent braking mechanism brakes the turntable, the three-jaw chuck is also braked synchronously.

[0013] In a further embodiment of the technical solution of the utility model, the braking mechanism is a brake caliper, which is fixed to the bottom of the upper base plate through a main shaft. The brake caliper rubs against the turntable to generate a braking force on the turntable, thereby facilitating the braking of the turntable and providing a load to the turntable so that the rotating device can cooperate with an external test valve to detect the torque force of the external test valve in the current state under a variety of different load conditions.

[0014] In a further optimization of the technical solution of the utility model, the control mechanism is an oil pump, and the oil pump is fixed to the base plate through an oil pump baffle, which is used to ensure the stability of the oil pump and the braking effect of the brake controlled by the oil pump is better.

[0015] In a further preferred embodiment of the technical solution of the utility model, the driving source is a motor, and the motor is fixed to the bottom plate through a motor baffle to ensure the stability of the motor.

[0016] In a further optimization of the technical solution of the utility model, a plurality of universal wheels are provided at the bottom of the bracket of the test bench to facilitate the movement of the test bench when not working.

[0017] In a further optimization of the technical solution of the utility model, the motor output shaft is connected to the oil pump through a second coupling, and a concave block for guiding and auxiliary supporting the second coupling is also provided on the base plate below the second coupling to ensure the stability of the second coupling.

[0018] In a further optimization of the technical solution of the utility model, a control console for receiving torque data of an external test valve and controlling the test is provided next to the test bench, and the control console is connected to the torque sensor signal for controlling the test process.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The utility model can accurately adjust the brake mechanism through the cooperation of the driving source and the control mechanism, thereby realizing the test of the valve torque force under various load conditions, so as to facilitate more accurate valve test results.

[0021] 2. The utility model realizes automatic testing through the cooperation of a driving source, a control mechanism and a braking mechanism, with a high degree of automation and without consuming a large amount of labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a structural diagram of the overall device of this embodiment;

[0023] Figure 2 is a structural diagram of the test bench of this embodiment;

[0024] Figure 3 This is a schematic diagram of the structure of the test bench of this embodiment without the upper flange;

[0025] Figure 4 It is a schematic diagram of the structural plate of the connection part between the rotating shaft and the upper plate;

[0026] Explanation of the accompanying drawings: 1-bracket, 2-upper plate, 3-bottom plate, 4-turntable, 5-brake mechanism, 6-drive source, 7-control mechanism, 8-torque sensor, 9-three-jaw chuck, 10-upper flange, 11-lower flange, 12-rotating shaft, 13-spindle, 14-universal wheel, 15-bearing seat, 16-shoulder, 17-concave block, 18-control console, 61-motor baffle, 71-oil pump baffle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-4 And embodiments, the utility model is further described in detail. Example 1

[0028] like Figure 1-4As shown, a valve torque test bench of this embodiment includes a bracket 1, an upper plate 2 is fixed on the top of the bracket 1, a bottom plate 3 is fixed in the middle of the bracket 1, and a plurality of universal wheels 14 are provided at the bottom of the bracket 1 to facilitate movement of the test bench when it is not working.

[0029] like Figure 1-3 As shown, a three-jaw chuck 9 for fixing an external test valve is provided on the upper plate 2. The three-jaw chuck 9 is fixed to the upper plate 2 via a rotating shaft 12. The three-jaw chuck 9 is connected to the rotating shaft 12 via a first coupling. The rotating shaft 12 is arranged on the upper plate 2 via a bearing seat 15 and is rotatably connected to the upper plate 2.

[0030] like Figure 3 As shown, a circular hole is opened on the upper plate 2 for the shaft 12 to pass through, and the bearing seat 15 is fixed on the circular hole. A shoulder 16 is provided on the shaft 12 to contact the rotating inner ring of the bearing seat 15, so that the bearing seat 15 provides support for the shaft 12 to realize the rotation of the shaft 12 on the upper plate 2.

[0031] A turntable 4 is fixed to the other end of the rotating shaft 12, and the turntable 4 is key-connected to the rotating shaft 12. The external test valve drives the three-jaw chuck 9 to rotate, the three-jaw chuck 9 drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the turntable 4 to rotate, so that the three-jaw chuck 9, the rotating shaft 12 and the turntable 4 rotate synchronously under the action of the external test valve.

[0032] Similarly, when the rotating disk 4 is subjected to the braking force of the braking mechanism, the rotating shaft 12, the three-jaw chuck 9 and the external test valve will also be subjected to the braking force accordingly.

[0033] like Figure 1-3 As shown, an upper flange 10 and a lower flange 11 are sleeved on the outer side of the rotating shaft 12 , the lower flange 11 is fixed on the upper plate 2 , and a torque sensor 8 is fixed between the upper flange 10 and the lower flange 11 .

[0034] In this embodiment, the inner diameter of the lower flange 11 is sufficient to accommodate the bearing seat 15 .

[0035] In this embodiment, the torque sensor 8 adopts an annular torque sensor, the inner side of which is key-connected to the rotating shaft 12, the bottom is fixed on the lower flange 11, and the top is fixed with an upper flange 10, so that the staff can check and replace the torque sensor 8 regularly.

[0036] In this embodiment, the torque sensor 8 is signal-connected to a control console 18 , which is disposed on the left side of the test bench and is used to receive test data of the test valve.

[0037] like Figure 1-3As shown, in this embodiment, a main shaft 13 is also fixed to the bottom of the upper plate 2, one end of the main shaft 13 is fixed to the bottom of the upper plate 2, and the other end is fixed to a square fixing plate, on which two braking mechanisms 5 are fixed, and the braking mechanisms 5 clamp the turntable 4, so that the braking mechanisms 5 generate different braking forces and provide different sizes of loads to the turntable 4, thereby realizing torque testing of the external test valve under a variety of different load conditions, so that the torque data of the external test valve is more accurate.

[0038] In this embodiment, two braking mechanisms 5 can effectively brake the turntable 4 , which is better than the effect of providing one braking mechanism 5 .

[0039] A circular ring is welded on one end of the main shaft 13 fixed to the bottom of the upper plate 2. The circular ring is provided with multiple threaded holes to facilitate the main shaft 13 to be fixed to the bottom of the upper plate 2. The inside of the main shaft 13 is hollow, and the rotating shaft 12 passes through the main shaft 13 and is fixedly connected to the turntable 4.

[0040] like Figure 1-3 As shown, in this embodiment, a driving source 6 and a control mechanism 7 are provided on the base plate 3. The driving source 6 drives the control mechanism 7. The driving source 6 is a motor, which is fixed to the base plate 3 through a motor baffle 61. The motor housing is fixedly connected to the baffle. A motor shaft hole is provided at a relative position between the motor baffle 61 and the motor output shaft for the motor output shaft to pass through. A bearing is provided at the motor shaft hole, and the bearing can provide a certain supporting force to the motor output shaft without affecting the rotation of the motor output shaft.

[0041] The control mechanism 7 is an oil pump, which is fixed to the base plate 3 through an oil pump baffle 71. The oil pump housing is fixedly connected to the oil pump baffle 71. An oil pump shaft hole is provided at a relative position between the oil pump baffle 71 and the oil pump shaft for the oil pump shaft to pass through. A bearing is provided at the oil pump shaft hole, and the bearing can provide a certain supporting force to the oil pump shaft without affecting the rotation of the oil pump shaft.

[0042] The motor output shaft is connected to the oil pump shaft of the oil pump through a second coupling, and the second coupling can effectively reduce the noise and vibration when the motor output shaft drives the oil pump shaft to rotate.

[0043] like Figure 1-3 As shown, the oil pump is also provided with an oil pipe connected to the brake mechanism 5 and providing it with a pressure oil source (the connection between the oil pump oil pipe and the brake mechanism is a prior art, and the oil pipe is not drawn here), and the brake mechanism 5 is a brake caliper; the motor output shaft rotates to drive the oil pump shaft of the oil pump to rotate, thereby controlling the braking force of the brake caliper on the turntable 4, thereby realizing the test of the torque force of the external test valve under a variety of different braking forces.

[0044] like Figure 1 As shown, in this embodiment, a concave block 17 is provided on the bottom plate 3 below the second coupling for guiding and auxiliary supporting the second coupling.

[0045] In this embodiment, the console 18 is connected to the motor signal, so that the staff can control the motor through the console 18 to drive the oil pump and the brake caliper to control the test process and realize automated testing.

[0046] The specific method of using the valve torque test bench of this embodiment is as follows: fix the external test valve on the three-jaw chuck 9, start the external test valve, the external test valve drives the three-jaw chuck 9, the rotating shaft 12 and the turntable 4 to rotate synchronously, start the motor, and the motor output shaft drives the oil pump shaft to rotate, so that the oil pump controls the brake caliper to generate braking force on the turntable 4, so that the current external test valve is tested for torque under a certain load state, and the torque sensor 8 obtains the torque force of the external test valve in the current state and uploads the result to the control console 18. The staff can also control the motor through the control console 18, and then control the oil pressure delivered by the oil pump to the brake caliper to control the braking force on the turntable, thereby controlling the load, and realizing the torque test of the external test valve under a variety of different states.

[0047] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A valve torque test bench, characterized in that: The test bench comprises a support (1), an upper plate (2) and a bottom plate (3), wherein the upper plate (2) is fixed to the top of the support (1), and the bottom plate (3) is fixed to the middle of the support (1); the upper plate (2) is provided with a rotating mechanism for fixing an external test valve and rotating synchronously with the external valve, and a braking mechanism (5) fixed to the bottom of the upper plate (2) for braking the rotating mechanism and providing a load to the rotating mechanism; the rotating mechanism comprises a three-jaw chuck (9) and a rotating disk (4) for fixing the external test valve; the three-jaw chuck (9) is connected to the rotating disk (4) via a rotating shaft (12) to drive the rotating disk (4) to rotate synchronously with the external test valve; a torque sensor (8) for measuring valve torque is detachably provided between the three-jaw chuck (9) and the upper plate (2); The base plate (3) is provided with a driving source (6) and a control mechanism (7) connected to the braking mechanism (5) to drive the braking mechanism (5); the driving source (6) and the control mechanism (7) are connected to drive the braking mechanism (5).

2. The valve torque test bench according to claim 1, characterized in that: An upper flange (10) and a lower flange (11) for protecting the rotating shaft (12) are also provided between the three-jaw chuck (9) and the upper plate (2); the torque sensor (8) is fixed between the upper flange (10) and the lower flange (11); the lower flange (11) is fixed on the upper plate (2); and the upper flange (10) is fixed on the torque sensor (8).

3. The valve torque test bench according to claim 1, characterized in that: The three-jaw chuck (9) is connected to the rotating shaft (12) via a first coupling to drive the rotating disk (4) to rotate synchronously.

4. The valve torque test bench according to claim 1, characterized in that: The braking mechanism (5) is a brake caliper, which is fixed to the bottom of the upper plate (2) via a main shaft (13). The brake caliper rubs against the turntable (4) to generate braking force on the turntable (4).

5. The valve torque test bench according to claim 1, characterized in that: The control mechanism (7) is an oil pump, which is fixed to the base plate (3) via an oil pump baffle (71).

6. The valve torque test bench according to claim 1, characterized in that: The driving source (6) is a motor, and the motor is fixed on the bottom plate (3) via a motor baffle (61).

7. The valve torque test bench according to claim 1, characterized in that: The bottom of the support (1) of the test bench is also provided with a plurality of universal wheels (14).

8. The valve torque test bench according to claim 5 or 6, characterized in that: The motor output shaft is connected to the oil pump via a second coupling, and a concave block (17) for guiding and auxiliary supporting the second coupling is also provided on the bottom plate (3) below the second coupling.

9. The valve torque test bench according to claim 1, characterized in that: A control console (18) for receiving torque data of an external test valve and controlling the test is provided next to the test bench, and the control console (18) is connected to the torque sensor (8) signal.

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