Water turbine main shaft gulp valve shock absorber test device

Abstract

The utility model discloses a water turbine large shaft gulp valve shock absorber test device, which comprises a support frame, the upper surface of the support frame is fixedly connected with a base and a first motor, the output end of the first motor is fixedly connected with a fixed rod, and the inside of the fixed rod is rotatably connected with a connecting rod; a stand column is movably connected to one end of the linkage rod, a bearing disc is slidably connected to the exterior of the stand column, and a spring block is fixedly connected to the interior of the supporting frame and matched with the transverse rod. Through the above structure, vibration acting on the shock absorber is simulated through cooperation of the connecting rod and the fixing rod, the vertical rod is fixed through the linkage rod so that the vertical rod can slide in the groove of the bearing disc, the clamping effect is achieved, and in addition, the durability of the shock absorber is detected through interaction of the spring block and the cross rod. Therefore, the continuous stability of the damping effect of the damper can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of test devices, in particular to a test device for a shock absorber of a large shaft air supply valve of a water turbine. Background Art

[0002] When the vacuum generated in the tailwater pipe exceeds the set value, the pressure plate of the turbine air supply valve opens, and air enters the tailwater pipe through the main shaft for air supply. Vibration will be generated in the process of air supply, and shock absorbers are needed to reduce unstable movement and improve the operating conditions of the turbine. For example, a Chinese patent discloses a shock absorber aperture detection device, and its application number is: CN202311448864.5. It evenly distributes cross plates on the side of the movable center shaft ring. Before measuring the cylinder bore, the cross plates extend outward and abut against the inner wall of the cylinder, and the position of the center axis can be adjusted so that the center axis is concentric with the cylinder, which makes detection more convenient. However, there is no durability test on the shock absorber, and it may be damaged during use. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a test device for a shock absorber of a main shaft air supply valve of a turbine. The device simulates the vibration acting on the shock absorber through the cooperation of a connecting rod, a fixing rod and a spring, and fixes the vertical rod through a linkage rod so that it can slide along the groove of a receiving plate, thereby realizing a clamping effect. In addition, the interaction between the spring block and the cross rod is used to detect the durability of the shock absorber, so that the continuous stability of the shock absorption effect of the shock absorber can be detected.

[0004] The present utility model also provides a test device for a shock absorber of a water turbine main shaft air admission valve, comprising: a support frame, on the upper surface of which a base and a first motor are fixedly connected; the output end of the first motor is fixedly connected with a fixed rod, inside which a connecting rod is rotatably connected; one end of the fixed rod away from the first motor is rotatably connected with the base; the end of the connecting rod away from the fixed rod is movably connected with a concave cylinder block, and a first spring is arranged outside the concave cylinder block; on the upper surface of the base, a cylinder body is fixedly connected, inside which a second spring is arranged; one end of the second spring away from the cylinder body is fixedly connected with a platform, and the lower surface of the platform is fixedly connected with the first spring; a cylinder, the lower surface of which is fixedly connected with the platform, and the output end of which is fixedly connected with a mating body, on the upper surface of which a linkage rod is rotatably connected; one end of the linkage rod is movably connected with a vertical column, outside which a receiving disc is slidably connected, and the lower surface of the receiving disc is fixedly connected with a connecting shaft; on the upper surface of the platform, a second motor is fixedly connected, and the output end of the second motor is fixedly connected with the connecting shaft; a cover plate, the side surface of which is fixedly connected with the support frame, and inside which an electric push rod is fixedly connected, the output end of which is fixedly connected with a fixed block, and a third spring is arranged on the lower surface of the fixed block, and the lower end of the third spring is fixedly connected with a pressing block. Through the above components, the vibration acting on the shock absorber is simulated by the cooperation of the connecting rod, the fixed rod and the spring; the vertical column is fixed by the linkage rod so that it can slide along the groove of the receiving disc, thereby realizing the clamping function; in addition, the durability of the shock absorber is detected by the interaction between the spring block and the cross bar, so that the continuous stability of the shock absorption effect of the shock absorber can be detected.

[0005] According to the test device for a shock absorber of a water turbine main shaft air admission valve of the present utility model, there are three vertical columns which are axially symmetrically distributed, and the three vertical columns penetrate through the inside of the receiving disc and extend into the inside of the linkage rod. Through the above components, the bottom end of the vertical column is fixed to prevent rotation and deviation.

[0006] According to the test device for a shock absorber of a water turbine main shaft air admission valve of the present utility model, there are two second springs and two cylinder bodies. The two second springs are both located inside the cylinder bodies, and the concave cylinder block is located between the two cylinder bodies. Through the above components, the connecting rod is fixed by the concave cylinder block, and the second spring is fixed by the cylinder body.

[0007] According to the test device for a shock absorber of a water turbine main shaft air admission valve of the present utility model, a pressure sensor is arranged on the side surface of the fixed block, the pressure sensor is electrically connected with a display module, and the display module is electrically connected with a console. Through the above components, the pressure signal is transmitted to the display module by the pressure sensor for data statistics.

[0008] A shock absorber test device for a water turbine main shaft air intake valve according to the present utility model, one end of the fixed rod away from the first motor penetrates through the interior of the base and extends to the inner wall of the base. Through the above components, the fixed rod is driven to rotate by the first motor.

[0009] A shock absorber test device for a water turbine main shaft air intake valve according to the present utility model, a reset electromagnet is arranged between the lower surface of the fixed block and the third spring. Through the above components, when the pressing block is squeezed, it can be quickly reset.

[0010] A shock absorber test device for a water turbine main shaft air intake valve according to the present utility model, a spring block is fixedly connected inside the support frame, there are two groups of spring blocks and each group has two, and the two groups of spring blocks are symmetrically distributed. Through the above components, through the repeated squeezing effect of the spring blocks, the stability of the durability performance of the shock absorber can be observed.

[0011] A shock absorber test device for a water turbine main shaft air intake valve according to the present utility model, a cross bar is fixedly connected to the side surface of the pressing block, and the cross bar matches the spring block. Through the above components, the spring block is pressurized by the cross bar, so as to detect the shock absorption effect of the shock absorber.

[0012] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0014] Figure 1 is the complete structure diagram of the shock absorber test device for the water turbine main shaft air intake valve of the present utility model;

[0015] Figure 2 is the structure diagram of the vibration mechanism of the shock absorber test device for the water turbine main shaft air intake valve of the present utility model;

[0016] Figure 3 is the structure diagram of the cylinder body of the shock absorber test device for the water turbine main shaft air intake valve of the present utility model;

[0017] Figure 4 is the structure diagram of the fixing mechanism of the shock absorber test device for the water turbine main shaft air intake valve of the present utility model;

[0018] Figure 5 is the partial structure diagram at A of the shock absorber test device for the water turbine main shaft air intake valve of the present utility model;

[0019] Figure 6 is the structure diagram of the elastic mechanism of the shock absorber test device for the water turbine main shaft air intake valve of the present utility model.

[0020] Legend:

[0021] 1. Base; 2. Support frame; 3. Motor No. 1; 4. Motor No. 2; 5. Cylinder; 6. Electric push rod; 7. Fixed rod; 8. Control console; 9. Pressure sensor; 10. Cylinder; 11. Spring 1; 12. Spring 2; 13. Spring 3; 14. Spring block; 15. Connecting rod; 16. Concave cylinder block; 17. Platform; 18. Matching body; 19. Receiver plate; 20. Column; 21. Linkage rod; 22. Cover plate; 23. Fixed block; 24. Pressure block; 25. Crossbar; 26. Display module; 27. Connecting shaft; 28. Reset electromagnet. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1-6 The utility model embodiment is a test device for a large shaft air supply valve shock absorber of a turbine, which includes: a support frame 2, the upper surface of the support frame 2 is fixedly connected with a base 1 and a No. 1 motor 3 to provide power for the movement of the components, the output end of the No. 1 motor 3 is fixedly connected with a fixed rod 7 to drive a connecting rod 15 to rotate, the end of the fixed rod 7 away from the No. 1 motor 3 penetrates the interior of the base 1 and extends to the inner wall of the base 1, the interior of the fixed rod 7 is rotatably connected with a connecting rod 15 to drive a concave cylinder block 16 to move up and down, the end of the fixed rod 7 away from the No. 1 motor 3 is rotatably connected to the base 1, and the end of the connecting rod 15 away from the fixed rod 7 A concave cylinder block 16 is movably connected to fix the position of the spring 11. The outside of the concave cylinder block 16 is provided with a spring 11. The upper surface of the base 1 is fixedly connected with a cylinder 10 to fix the spring 2 12 to prevent a large impact on the platform 17 during movement. A spring 2 12 is provided inside the cylinder 10. There are two springs 2 12 and two cylinders 10. Both springs 2 12 are located inside the cylinder 10. The concave cylinder block 16 is located between the two cylinders 10. One end of the spring 2 12 away from the cylinder 10 is fixedly connected with the platform 17 to fix and support it. The lower surface of the platform 17 is fixedly connected with the spring 11.

[0024] Cylinder 5, the lower surface of cylinder 5 is fixedly connected to the platform 17, the output end of cylinder 5 is fixedly connected with an adapter 18 to fix one end of the linkage rod 21, the upper surface of the adapter 18 is rotatably connected with a linkage rod 21 to fix the bottom end of the upright column 20, one end of the linkage rod 21 is movably connected with an upright column 20 to clamp the shock absorber. There are three upright columns 20 which are axially symmetrically distributed. The three upright columns 20 penetrate through the inside of the receiving plate 19 and extend into the inside of the linkage rod 21. The outside of the upright column 20 is slidably connected with the receiving plate 19, which is the part for placing the shock absorber. The lower surface of the receiving plate 19 is fixedly connected with a connecting shaft 27, and the upper surface of the platform 17 is fixedly connected with a second motor 4, which is the power source. The output end of the second motor 4 is fixedly connected with the connecting shaft 27; Cover plate 22, the side surface of the cover plate 22 is fixedly connected with the support frame 2, the inside of the cover plate 22 is fixedly connected with an electric push rod 6 to provide driving force for the movement of the components. The output end of the electric push rod 6 is fixedly connected with a fixing block 23 to play a fixing role. A third spring 13 is arranged on the lower surface of the fixing block 23, and the lower end of the third spring 13 is fixedly connected with a pressing block 24.

[0025] A pressure sensor 9 is arranged on the side surface of the fixing block 23 to transmit pressure signals. The pressure sensor 9 is electrically connected to the display module 26, and the display module 26 is electrically connected to the console 8. A reset electromagnet 28 is arranged between the lower surface of the fixing block 23 and the third spring 13, which can make the pressing block 24 quickly return to its position. Two groups of spring blocks 14 are fixedly connected inside the support frame 2 to reduce impact and provide buffering. There are two spring blocks 14 in each group, and the two groups of spring blocks 14 are symmetrically distributed. A cross bar 25 is fixedly connected to the side surface of the pressing block 24 to squeeze the spring blocks 14, and the cross bar 25 matches the spring blocks 14.

[0026] Working principle: First, place the shock absorber on the receiving plate 19, start the second motor 4 to drive the connecting shaft 27 to make the receiving plate 19 rotate. The receiving plate 19 drives the upright column 20 connected to the linkage rod 21 to slide, so that the upright column 20 strengthens the shock absorber. Start the cylinder 5 to push the adapter 18, so that the receiving plate 19 drives the shock absorber to move under the pressing block 24. Start the electric push rod 6 to drive the fixing block 23 to make the pressing block 24 contact the top of the shock absorber. Start the first motor 3 to drive the fixing rod 7 to make the connecting rod 15 move. The connecting rod 15 drives the concave cylinder block 16 to move up and down to make the shock absorber move. The up and down movement of the shock absorber will hit the pressing block 24, making the cross bar 25 connected to the side of the pressing block 24 move to repeatedly squeeze the spring blocks 14. The pressing block 24 will move downward to press the shock absorber when the third spring 13 and the reset electromagnet 28 are about to return. The pressure sensor 9 transmits the signal to the display module 26, thereby detecting the performance of the shock absorber.

[0027] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains.

Claims

1. A test device for a hydraulic turbine main shaft air supply valve shock absorber, characterized in that: include: A support frame (2), wherein the upper surface of the support frame (2) is fixedly connected with a base (1) and a No. 1 motor (3), the output end of the No. 1 motor (3) is fixedly connected with a fixed rod (7), the interior of the fixed rod (7) is rotatably connected with a connecting rod (15), the end of the fixed rod (7) away from the No. 1 motor (3) is rotatably connected with the base (1), the end of the connecting rod (15) away from the fixed rod (7) is movably connected with a concave cylinder block (16), the outside of the concave cylinder block (16) is provided with a spring 1 (11), the upper surface of the base (1) is fixedly connected with a cylinder (10), the interior of the cylinder (10) is provided with a spring 2 (12), the end of the spring 2 (12) away from the cylinder (10) is fixedly connected with a platform (17), and the lower surface of the platform (17) is fixedly connected with the spring 1 (11); A cylinder (5), wherein the lower surface of the cylinder (5) is fixedly connected to a platform (17), the output end of the cylinder (5) is fixedly connected to a matching body (18), the upper surface of the matching body (18) is rotatably connected to a linkage rod (21), one end of the linkage rod (21) is movably connected to a column (20), the outside of the column (20) is slidably connected to a receiving plate (19), the lower surface of the receiving plate (19) is fixedly connected to a connecting shaft (27), the upper surface of the platform (17) is fixedly connected to a No. 2 motor (4), and the output end of the No. 2 motor (4) is fixedly connected to the connecting shaft (27); A cover plate (22), the side surface of the cover plate (22) is fixedly connected to the support frame (2), the interior of the cover plate (22) is fixedly connected to an electric push rod (6), the output end of the electric push rod (6) is fixedly connected to a fixed block (23), the lower surface of the fixed block (23) is provided with a spring three (13), and the lower end of the spring three (13) is fixedly connected to a pressure block (24).

2. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: There are three upright posts (20) which are axially symmetrically distributed. The three upright posts (20) penetrate the interior of the receiving plate (19) and extend to the interior of the linkage rod (21).

3. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: There are two springs (12) and two cylinders (10), and the two springs (12) are both located inside the cylinder (10), and the concave cylinder block (16) is located between the two cylinders (10).

4. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: A pressure sensor (9) is provided on the side surface of the fixed block (23); the pressure sensor (9) is electrically connected to a display module (26); and the display module (26) is electrically connected to a console (8).

5. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: One end of the fixing rod (7) away from the first motor (3) passes through the interior of the base (1) and extends to the inner wall of the base (1).

6. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: A reset electromagnet (28) is arranged between the lower surface of the fixed block (23) and the spring three (13).

7. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: A spring block (14) is fixedly connected inside the support frame (2), the spring blocks (14) are in two groups, each group has two spring blocks, and the two groups of spring blocks (14) are symmetrically distributed.

8. A turbine main shaft air supply valve shock absorber test device according to claim 1, characterized in that: A cross bar (25) is fixedly connected to the side surface of the pressing block (24), and the cross bar (25) matches the spring block (14).

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