Hydropower station hydro-generator turning gear

Abstract

The invention provides a hydraulic generator turning gear of a hydropower station, and relates to the technical field of turning gear, the hydraulic generator turning gear of the hydropower station comprises a rack; a driving assembly; the rotating disc is connected with the driving assembly, and at least one set of force transmission blocks are arranged on the rotating disc; the rotating seat is provided with at least one group of force exerting blocks corresponding to the force transmission blocks, each group of force exerting blocks comprise two force exerting blocks, the force transmission blocks are located between the two force exerting blocks, and the distance between the two force exerting blocks is larger than the width of the force transmission blocks. Therefore, in the process that the rotating disc rotates at a constant speed to decelerate and brake, the force transmission block is separated from one of the force exerting blocks and then makes contact with the other force exerting block, and in the process that the force transmission block is separated from one of the force exerting blocks to make contact with the other force exerting block, the rotating disc is separated from the rotating base, so that the inertia of the rotating disc is small, and acceleration and deceleration can be rapidly conducted. Therefore, the turning efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of winch devices, and in particular to a winch device for a hydro-turbine generator in a hydropower station. Background Art

[0002] When a hydropower station is undergoing a major overhaul, it is necessary to check the axis of the turbine generator set to ensure the coaxiality of the fixed and rotating parts of the unit to ensure safe and stable operation of the generator set. The axis inspection process requires turning the gear, during which the "swing" at the guide bearing, the air gap value between the rotor and the stator, and the labyrinth ring gap value between the runner and the top cover are recorded when the rotating part rotates to different phase angles, so as to determine the deviation between the actual center and the theoretical center of the unit, and adjust the axis based on the measured data. If the unit axis is unqualified, it will cause the unit to vibrate and the swing to exceed the standard, affecting the unit efficiency and threatening the safe and stable operation of the unit.

[0003] At present, manual cranking is usually adopted for small units, while electric cranking devices are adopted for cranking of medium and large units. For example, the invention patent application with publication number CN111207022A discloses an automatic cranking device for a hydro-turbine generator, which drives the transmission gear to rotate through a motor, a reducer and a gear box, and then transmits a couple through the eccentric pin of the transmission assembly fixed on the transmission gear, so as to drive the upper shaft of the generator to rotate, thereby realizing cranking.

[0004] However, during the cranking process, the rotating part of the generator set goes from stationary to rotating, and then from rotating to stopped, which needs to go through a process of first accelerating and then decelerating. During the deceleration process, the generator set needs to be decelerated and braked by a motor. Since the eccentric pin of the automatic cranking device of the above-mentioned hydro-turbine generator is fixedly connected to the rotating base on the upper shaft of the generator, when the motor is used to decelerate and brake, the transmission gear is fixedly connected to the upper shaft of the generator, resulting in a large inertia, which causes the deceleration and braking speed of the motor to be slow. At the same time, the motor is subjected to a large load during the deceleration and braking process, resulting in the inability to accurately control the rotation angle of the rotating part of the generator set. Summary of the invention

[0005] The purpose of the present application is to provide a winching device for a hydropower station's turbine generator, which is used to solve the problem that during the winching process of the electric winching device in the related art, when the motor is used to decelerate and brake, the transmission gear is fixedly connected to the upper shaft of the motor, resulting in a large inertia, which causes the deceleration and braking speed of the motor to be slow. At the same time, during the deceleration and braking process, the motor is subjected to a large load, resulting in the inability to accurately control the rotation angle of the upper shaft of the motor.

[0006] The present application provides a hydroelectric generator turning device for a hydropower station using the following technical solution:

[0007] A hydroelectric generator turning device for a hydropower station, comprising:

[0008] frame;

[0009] A driving assembly, wherein the driving assembly is arranged on the frame;

[0010] A turntable, the turntable is connected to the driving assembly, the driving assembly is used to drive the turntable to rotate, and the turntable is provided with at least one set of force transmission blocks;

[0011] A rotating seat, which is used to be connected to the upper end shaft of the hydro-generator. The rotating seat is provided with at least one group of force blocks corresponding to the force transmission blocks, each group of force blocks is provided with two force blocks, the force transmission block is located between the two force blocks, and the distance between the two force blocks is greater than the width of the force transmission block.

[0012] Optionally, the driving assembly includes a turning motor and a turning gear, the turning motor is fixed on the frame, a turning gear ring is provided on the turntable, a plurality of turning gears are provided and are located on the outer peripheral side of the turning gear ring, the turning gear is connected to the turning motor and meshes with the turning gear ring.

[0013] Optionally, the turntable is provided with an oil receiving groove, the oil receiving groove is located below the turntable gear and the turntable gear ring, and the oil receiving groove is used to receive the lubricating oil and friction debris on the turntable gear and the turntable gear ring.

[0014] Optionally, a rotary encoder is further included, wherein the fixed portion of the rotary encoder is fixed on the frame, the rotating portion of the rotary encoder is connected to the rotating seat, and the rotary encoder is used to detect the rotation angle of the upper end shaft of the hydro-generator.

[0015] Optionally, it also includes a laser rangefinder, which is fixed on the frame. There are multiple groups of laser rangefinders distributed around the upper shaft of the hydro-turbine generator. The laser rangefinder is used to measure the horizontal swing of the upper shaft of the hydro-turbine generator.

[0016] Optionally, it also includes a disc brake mechanism, which includes a brake disc, a brake pad and a clamping drive component, the brake disc is fixedly connected to the turntable, the brake pad is provided with two pieces, and is respectively located on both sides of the brake disc, the clamping drive component is fixed on the frame, the clamping drive component is provided with two groups, and is respectively connected to the brake pads.

[0017] Optionally, a limit groove is provided on the turntable, the force transmission block is clamped in the limit groove, a through hole is provided on the force transmission block, a bolt is fixed on the turntable, the bolt passes through the through hole, a nut is threaded on the bolt, and the nut abuts against the upper surface of the force transmission block.

[0018] Optionally, it also includes a transfer mechanism and an ultrasonic probe, wherein the ultrasonic probe is arranged on the shaft collar of the upper end shaft of the hydro-turbine generator, the transfer mechanism is connected to the ultrasonic probe, and the transfer mechanism is used to drive the ultrasonic probe to move circumferentially and axially along the upper end shaft of the hydro-turbine generator.

[0019] Optionally, the transfer mechanism includes a bracket, a roller, a roller driving member and a radial driving member, the radial driving member is arranged on the bracket and connected to the ultrasonic probe, the radial driving member is used to drive the ultrasonic probe to move radially along the upper end shaft of the hydro-turbine generator, the roller is arranged on the bracket, the roller abuts against the shaft collar of the upper end shaft of the hydro-turbine generator, and the roller driving member is arranged on the bracket and connected to the roller.

[0020] Optionally, the roller can roll along the axial or circumferential direction of the upper shaft of the hydro-turbine generator. When the ultrasonic probe contacts the shaft collar of the upper shaft of the hydro-turbine generator, the roller can roll along the circumferential direction of the upper shaft of the hydro-turbine generator. When the ultrasonic probe is separated from the shaft collar of the upper shaft of the hydro-turbine generator, the roller can roll along the axial direction of the upper shaft of the hydro-turbine generator.

[0021] In summary, the present application includes at least the following beneficial technical effects: in the process of cranking of the hydropower station turbine generator cranking device of the present application, since the force transmission block is located between the two force blocks, and the distance between the two force blocks is greater than the width of the force transmission block, in the process of the turntable rotating from uniform speed to deceleration braking, the force transmission block is first separated from one of the force blocks and then contacts with the other force block, and in the process of the force transmission block separating from one of the force blocks and contacting with the other force block, the turntable is disengaged from the rotating seat, so the inertia of the turntable is small, and it can be accelerated and decelerated quickly, thereby improving the cranking efficiency, and at the same time the cranking motor bears a smaller load, so that the rotation angle of the upper shaft of the turbine generator during the cranking process can be accurately controlled to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of a hydroelectric generator winch device of a hydropower station in Example 1 of the present application from a first viewing angle;

[0023] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0024] Figure 3 It is a cross-sectional view of the winching device of the hydro-turbine generator of the hydropower station in Example 1 of the present application from a second viewing angle;

[0025] Figure 4 It is a cross-sectional view of the winching device of the hydro-turbine generator of the hydropower station in Example 1 of the present application from a third viewing angle;

[0026] Figure 5 for Figure 4 A partial enlarged schematic diagram of part B;

[0027] Figure 6 It is a cross-sectional view of the hydropower station turbine generator winching device in Example 1 of the present application from a fourth viewing angle;

[0028] Figure 7 for Figure 6 A partial enlarged schematic diagram of part C in the middle;

[0029] Figure 8 This is a schematic diagram of the structure of the transfer mechanism and the ultrasonic probe in Example 2 of the present application;

[0030] Fig. 9 A cross-sectional view of the transfer mechanism and the ultrasonic probe in the first viewing angle in Example 2 of the present application;

[0031] Fig.10 for Fig. 9 A partial enlarged schematic diagram of the middle M part;

[0032] Fig.11 A cross-sectional view of the transfer mechanism and the ultrasonic probe at a second viewing angle in Example 2 of the present application;

[0033] Fig.12 for Fig. 9 A partial enlarged schematic diagram of part N in the figure.

[0034] Description of reference numerals:

[0035] 10. Frame; 20. Driving assembly; 21. Turning motor; 22. Turning gear; 23. Speed ​​reducer;

[0036] 30. Turntable; 31. Force transmission block; 311. Through hole; 32. Limiting groove; 33. Bolt; 34. Nut; 35. Turning gear ring; 36. Oil receiving groove; 40. Rotating seat; 41. Force block;

[0037] 50. disc brake mechanism; 51. brake disc; 52. brake pad; 53. clamping drive member;

[0038] 60, bracket; 61, first base; 611, convex block; 62, second base; 70, roller; 71, column; 711, limiting hole; 712, second worm gear; 72, wheel frame; 721, second slide bar; 722, second anti-drop block; 73, second spring; 80, roller drive member;

[0039] 90, radial drive member; 91, stud; 911, axial groove; 912, groove; 92, first worm; 921, first gear; 93, support; 931, first slide bar; 932, first anti-drop block; 94, screw sleeve; 941, first worm wheel; 95, radial drive motor; 96, first spring; 97, linkage gear ring; 971, annular groove; 98, second worm; 981, second gear;

[0040] 100. Ultrasonic probe; 110. Upper shaft; 120. Rotary encoder; 121. Bracket; 130. Laser rangefinder. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Fig.12 , further details of this application are given.

[0042] Example 1

[0043] This embodiment discloses a winching device for a hydro-turbine generator in a hydropower station.

[0044] A hydroelectric generator turning device for a hydropower station comprises a frame 10, a driving assembly 20, a turntable 30, a rotating seat 40, a rotary encoder 120, a laser rangefinder 130 and a disc brake mechanism 50.

[0045] Reference Figure 1 and Figure 2 The driving assembly 20 is arranged on the frame 10, and the turntable 30 is connected to the driving assembly 20. The driving assembly 20 is used to drive the turntable 30 to rotate. More specifically, the driving assembly 20 includes a turning motor 21 and a turning gear 22. The turning motor 21 is fixed on the frame 10. The turntable 30 is provided with a turning gear ring 35. There are multiple turning gears 22, which are located on the outer peripheral side of the turning gear ring 35. The turning gear 22 is connected to the turning motor 21 through a reducer 23 and meshes with the turning gear ring 35.

[0046] An oil receiving groove 36 is provided on the turntable 30 . The oil receiving groove 36 is located below the turning gear 22 and the turning gear ring 35 . The oil receiving groove 36 is used to receive lubricating oil and friction debris on the turning gear 22 and the turning gear ring 35 .

[0047] Reference Figures 3 to 5 At least one group of force transmission blocks 31 is provided on the turntable 30. In an optional embodiment, the specific connection relationship between the force transmission block 31 and the turntable 30 is as follows: a limiting groove 32 is provided on the turntable 30, and the force transmission block 31 is clamped in the limiting groove 32. A through hole 311 is provided on the force transmission block 31. A bolt 33 is fixed on the turntable 30, and the bolt 33 passes through the through hole 311. A nut 34 is screwed on the bolt 33, and the nut 34 abuts against the upper surface of the force transmission block 31.

[0048] The rotating seat 40 is used to connect with the upper shaft 110 of the hydro-generator. When the turning operation is performed, the rotating seat 40 can be fixedly connected with the upper shaft 110 of the hydro-generator by screws and other connecting parts. The rotating seat 40 is provided with at least one group of force blocks 41 corresponding to the force transmission blocks 31. Each group of force blocks 41 has two force blocks. The force transmission block 31 is located between the two force blocks 41 and contacts the upper surface of the rotating seat 40. The distance between the two force blocks 41 is greater than the width of the force transmission block 31. In this embodiment, the force transmission blocks 31 and the force blocks 41 are respectively provided in two groups and are evenly distributed along the circumferential direction.

[0049] The fixed part of the rotary encoder 120 is fixed on the frame 10 through the bracket 121 , and the rotating part of the rotary encoder 120 is connected to the rotating seat 40 . The rotary encoder 120 is used to detect the rotation angle of the upper shaft 110 of the hydro-generator.

[0050] The laser rangefinder 130 is fixed on the frame 10. There are multiple groups of laser rangefinders 130, which are distributed around the turning measurement points of the hydro-turbine generator set. The laser rangefinder 130 is used to measure the horizontal swing of the hydro-turbine generator shaft, so as to determine the deviation between the actual center and the theoretical center of the rotating part of the hydro-turbine generator, and make adjustments based on the measurement data.

[0051] Reference Figure 6 to Figure 7 The disc brake mechanism 50 includes a brake disc 51, a brake pad 52 and a clamping drive member 53. The brake disc 51 is fixedly connected to the turntable 30. The brake pad 52 is provided with two pieces and is respectively located on both sides of the brake disc 51. The clamping drive member 53 is fixedly provided on the frame 10. The clamping drive member 53 is provided with two groups and is respectively connected to the brake pad 52. The clamping drive member 53 can adopt a 35MPa hydraulic jack.

[0052] The process of the hydropower station turbine generator turning device in this embodiment includes the following steps:

[0053] S1. The turning gear 22 is driven to rotate by the turning motor 21, and then the turning gear 22 drives the turning gear ring 35, the turntable 30 and the force transmission block 31 to rotate. When the force transmission block 31 contacts one of the force blocks 41 in each group (the one in each group of force blocks 41 that contacts the force transmission block 31 is represented by A force block 41, and the other one that does not contact the force transmission block 31 is represented by B force block 41), the turning motor 21 starts to accelerate slowly, so that the acceleration of the turntable 30 and the rotating seat 40 is about 0.017° / s 2 , and continue for 30 seconds until the speed of the turntable 30 and the rotating seat 40 reaches 0.5° / s.

[0054] S2. When the speed of the turntable 30 and the rotating base 40 reaches 0.5° / s, maintain this uniform rotation state.

[0055] S3. When the turntable 30 and the rotating seat 40 rotate to a certain angle (e.g., the specified turning angle is 45°, and the actual rotation is 30°), the preparatory deceleration begins. The turning table 30 is decelerated by the turning motor 21, so that the force transmission block 31 is separated from the A force block 41. At this time, the rotating seat 40 and the upper shaft 110 of the hydro-generator continue to rotate at 0.5° / s due to inertia.

[0056] Then, the turntable 30 is controlled to decelerate to stop through the turning motor 21, and reverse to 0.5° / s. When the force transmission block 31 is about to contact the B force block 41, it rotates forward quickly again and accelerates to 0.4° / s. After the force transmission block 31 contacts the B force block 41, it accelerates to 0.5° / s. Since the turntable 30 is disengaged from the rotating seat 40 during the process from the force transmission block 31 separating from the A force block 41 to the contacting with the B force block 41, the inertia of the turntable 30 is small, and it can be accelerated and decelerated quickly, thereby improving the turning efficiency. At the same time, the turning motor 21 bears a smaller load, so that the rotation angle of the rotating part of the hydro-turbine generator during the turning process can be accurately controlled to a certain extent.

[0057] S4. After the force transmission block 31 contacts the force block B 41, the control motor 21 is controlled to decelerate, and the turntable 30, the rotating seat 40 and the rotating part of the hydro-generator are driven to decelerate to achieve braking. Before braking, the control system calculates the advance action distance according to the braking speed. For example, the preset turning angle is 45°, and according to the inertia angle required for this section of operation, it is calculated that the braking operation needs to be performed 10° in advance, so the system will start the braking program when the turning reaches 35°. During the braking process, the disc brake mechanism 50 can also be used to perform auxiliary braking on the rotating seat 40 and the rotating part of the hydro-generator.

[0058] Example 2

[0059] This embodiment discloses a winching device for a hydro-turbine generator in a hydropower station.

[0060] Reference Figure 8 The difference between the hydropower station turbine generator winching device of this embodiment and the embodiment 1 is that it also includes a transfer mechanism and an ultrasonic probe 100. The ultrasonic probe 100 is arranged on the outer peripheral side of the upper end shaft 110 of the turbine generator. The transfer mechanism is connected to the ultrasonic probe 100, and the transfer mechanism is used to drive the ultrasonic probe 100 to move along the circumferential and axial directions of the upper end shaft 110 of the turbine generator.

[0061] The ultrasonic probe 100 can be driven by the transfer mechanism to move along the circumferential and axial directions of the upper shaft 110 of the hydro-generator. The ultrasonic probe 100 generates an ultrasonic pulse signal and receives a returned signal. By analyzing the amplitude, time delay and waveform change of the echo signal, the position, shape and size of defects such as corrosion and cracks in the upper shaft 110 of the hydro-generator can be determined, and defect detection can be performed on the upper shaft 110 of the hydro-generator, so that the defective parts of the upper shaft 110 of the hydro-generator can be maintained or repaired in time, thereby extending the service life of the upper shaft 110 of the hydro-generator.

[0062] Reference Figures 9 to 11 In an optional embodiment, the transfer mechanism may adopt the following structure: the transfer mechanism includes a bracket 60, a roller 70, a roller driving member 80 and a radial driving member 90, the radial driving member 90 is arranged on the bracket 60 and connected to the ultrasonic probe 100, and the radial driving member 90 is used to drive the ultrasonic probe 100 to move radially along the upper end shaft 110 of the hydro-generator.

[0063] More specifically, the radial drive member 90 includes a stud 91, a first worm 92, a support 93, a sleeve 94 and a radial drive motor 95. A first base 61 is provided on the bracket 60. The sleeve 94 is rotatably disposed on the first base 61. The stud 91 is threadedly connected to the sleeve 94. A limiting portion for limiting the rotation of the stud 91 is provided on the first base 61. A first worm gear 941 is provided on the periphery of the sleeve 94. The first worm 92 is rotatably disposed on the first base 61 and meshes with the first worm gear 941. The radial drive motor 95 is fixedly disposed on the first base 61 and connected to the first worm 92. The support 93 is connected to the stud 91 through a first elastic member. The ultrasonic probe 100 is fixedly disposed on the support 93.

[0064] Furthermore, the limiting portion may adopt the following structure: the limiting portion is a protrusion 611 provided on the first base 61 , an axial groove 911 is provided on the stud 91 , and the stud 91 is slidably engaged with the protrusion 611 through the axial groove 911 .

[0065] The first elastic member can adopt the first spring 96, and the following connection structure can be adopted between the support 93, the first spring 96 and the stud 91: a first sliding rod 931 is provided on the support 93, the first sliding rod 931 is slidably inserted on the stud 91, the first sliding rod 931 is provided with a first anti-slip block 932 for limiting separation from the stud 91, the stud 91 is provided with a groove 912, the first spring 96 is sleeved on the outside of the first sliding rod 931, and the two ends of the first spring 96 are respectively abutted against the support 93 and the inner wall of the groove 912.

[0066] Reference Fig. 9 , Fig.11 and Fig.12The roller 70 is arranged on the bracket 60. There are multiple groups of rollers 70, which are evenly distributed along the circumference of the upper end shaft 110 of the hydro-turbine generator. The multiple groups of rollers 70 are respectively abutted against the shaft collars of the upper end shaft 110 of the hydro-turbine generator. The roller driving member 80 is arranged on the bracket 60 and connected to the roller 70. The roller driving member 80 can adopt a roller driving motor.

[0067] In an optional embodiment, the roller 70 is disposed on the bracket 60 through a connecting assembly. More specifically, the connecting assembly includes a column 71 and a wheel frame 72. A second base 62 is provided on the bracket 60. The column 71 is rotatably disposed on the second base 62. The wheel frame 72 is connected to the column 71 through a second elastic member. The roller 70 is rotatably disposed on the wheel frame 72. The roller driving member 80 is fixed on the wheel frame 72.

[0068] Furthermore, the second elastic member can adopt a second spring 73, and the specific connection relationship between the wheel frame 72, the second spring 73 and the column 71 is as follows: a limiting hole 711 is provided on the column 71, and a second slide bar 721 is provided on the wheel frame 72. The second slide bar 721 is slidably inserted in the limiting hole 711, and a second anti-slip block 722 is provided on the second slide bar 721 to limit the separation of the second slide bar 721 from the column 71. The second spring 73 is sleeved on the outside of the second slide bar 721, and the two ends of the second spring 73 are respectively abutted against the wheel frame 72 and the column 71. The second spring 73 can make the roller 70 pressed tightly against the shaft collar of the upper end shaft 110 of the hydro-turbine generator.

[0069] Reference Figure 8 , Fig. 9 , Fig.11 and Fig.12 In an optional embodiment, the radial driving member 90 is connected to the roller 70 through a linkage mechanism. More specifically, the linkage mechanism includes a linkage ring gear 97 and a second worm 98. The linkage ring gear 97 is rotatably arranged on the bracket 60. Furthermore, the bracket 60 and the linkage ring gear 97 are annular structures with one side open. The linkage ring gear 97 is provided with an annular groove 971. The linkage ring gear 97 is rotatably sleeved on the outer side of the bracket 60 through the annular groove 971.

[0070] The first worm 92 is provided with a first gear 921 , the column 71 is provided with a second worm wheel 712 , the second worm 98 is rotatably provided on the bracket 60 and meshes with the second worm wheel 712 , the second worm 98 is provided with a second gear 981 , and the first gear 921 and the second gear 981 are respectively meshed with the linkage gear ring 97 .

[0071] The roller 70 can roll along the axial direction or circumferential direction of the upper shaft 110 of the hydro-turbine generator. When the ultrasonic probe 100 contacts the shaft collar of the upper shaft 110 of the hydro-turbine generator, the ultrasonic probe 100 is used to detect defects of the upper shaft 110 of the hydro-turbine generator. The roller 70 can roll along the circumferential direction of the upper shaft 110 of the hydro-turbine generator, thereby adjusting the detection position of the ultrasonic probe 100 on the upper shaft 110 of the hydro-turbine generator along the circumferential direction, so that the ultrasonic probe 100 can perform a comprehensive detection of the upper shaft 110 of the hydro-turbine generator along the circumferential direction.

[0072] When the ultrasonic probe 100 is separated from the shaft collar of the upper shaft 110 of the hydro-turbine generator, the ultrasonic probe 100 suspends the detection of defects on the upper shaft 110 of the hydro-turbine generator, and the roller 70 can roll along the axial direction of the upper shaft 110 of the hydro-turbine generator, thereby adjusting the detection position of the ultrasonic probe 100 on the upper shaft 110 of the hydro-turbine generator along the axial direction, so that the ultrasonic probe 100 can enter the next section of the upper shaft 110 of the hydro-turbine generator for defect detection.

[0073] The implementation principle of the hydroelectric generator winching device of the hydropower station in this embodiment is: using the ultrasonic probe 100 to detect possible defects such as corrosion and cracks on the upper shaft 110 of the hydroelectric generator.

[0074] When the ultrasonic probe 100 is testing, the ultrasonic probe 100 contacts the shaft collar of the upper shaft 110 of the hydro-turbine generator, and the axis of the roller 70 is parallel to the axis of the upper shaft 110 of the hydro-turbine generator. During the testing process, the roller 70 is driven to rotate by the roller driving member 80, driving the bracket 60 to rotate around the axis of the upper shaft 110 of the hydro-turbine generator, adjusting the circumferential testing position of the ultrasonic probe 100 on the upper shaft 110 of the hydro-turbine generator, and performing a comprehensive test on the upper shaft 110 of the hydro-turbine generator along the circumferential direction. After the circumferential testing of a certain section on the upper shaft 110 of the hydro-turbine generator is completed, the first worm 92 is driven to rotate by the radial driving motor 95, and the first worm gear 941 and the screw sleeve 94 are driven to rotate by the first worm 92, and the stud 91 is driven to move along the radial direction of the upper shaft 110 of the hydro-turbine generator through the screw sleeve 94, so that the ultrasonic probe 100 is separated from the shaft collar of the upper shaft 110 of the hydro-turbine generator.

[0075] While the first worm 92 rotates, the first gear 921 rotates synchronously, and the first gear 921 drives the linkage ring gear 97 to rotate, and the linkage ring gear 97 drives the second gear 981 and the second worm 98 to rotate, and the second worm 98 drives the second worm wheel 712 and the column 71 to rotate, and adjust the direction of the roller 70 so that the axis of the roller 70 is perpendicular to the axis of the upper end shaft 110 of the turbine generator. Then, the roller 70 is driven to rotate through the roller driving member 80, driving the bracket 60 to move along the axis of the upper shaft 110 of the hydro-turbine generator, and the detection position of the ultrasonic probe 100 on the upper shaft 110 of the hydro-turbine generator is adjusted axially, so that the ultrasonic probe 100 enters the next section of the upper shaft 110 of the hydro-turbine generator for detection. When the ultrasonic probe 100 moves to the next section of the upper shaft 110 of the hydro-turbine generator, the ultrasonic probe 100 is driven by the radial driving motor 95 to contact the shaft collar of the upper shaft 110 of the hydro-turbine generator, and at the same time, the roller 70 is driven to reverse, and the axis of the roller 70 is adjusted to be parallel to the axis of the upper shaft 110 of the hydro-turbine generator.

[0076] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydroelectric generator turning device for a hydropower station, characterized in that: include: Frame (10); A driving assembly (20), wherein the driving assembly (20) is arranged on the frame (10); a rotating disk (30), the rotating disk (30) being connected to the driving assembly (20), the driving assembly (20) being used to drive the rotating disk (30) to rotate, and the rotating disk (30) being provided with at least one set of force transmission blocks (31); A rotating seat (40) is used to be connected to the upper end shaft (110) of the hydro-generator, and the rotating seat (40) is provided with at least one group of force blocks (41) corresponding to the force transmission blocks (31), each group of the force blocks (41) is provided with two force blocks, the force transmission block (31) is located between the two force blocks (41), and the distance between the two force blocks (41) is greater than the width of the force transmission block (31).

2. A hydroelectric generator winching device for a hydropower station according to claim 1, characterized in that: The driving assembly (20) comprises a turning motor (21) and a turning gear (22); the turning motor (21) is fixedly mounted on the frame (10); a turning gear ring (35) is disposed on the turntable (30); a plurality of turning gears (22) are disposed and are located on the outer peripheral side of the turning gear ring (35); the turning gears (22) are connected to the turning motor (21) and mesh with the turning gear ring (35).

3. A hydroelectric generator winching device for a hydropower station according to claim 2, characterized in that: The rotating disk (30) is provided with an oil receiving groove (36), and the oil receiving groove (36) is located below the turning gear (22) and the turning gear ring (35). The oil receiving groove (36) is used to receive lubricating oil and friction debris on the turning gear (22) and the turning gear ring (35).

4. A hydroelectric generator winching device for a hydropower station according to claim 1, characterized in that: It also comprises a rotary encoder (120), wherein the fixed part of the rotary encoder (120) is fixedly arranged on the frame (10), the rotating part of the rotary encoder (120) is connected to the rotating seat (40), and the rotary encoder (120) is used to detect the rotation angle of the upper end shaft (110) of the hydro-generator.

5. A hydroelectric generator winching device for a hydropower station according to claim 1, characterized in that: It also comprises a laser rangefinder (130), the laser rangefinder (130) being fixedly mounted on the frame (10), a plurality of laser rangefinders (130) being provided and distributed around the circumference of the upper shaft (110) of the hydro-generator, and the laser rangefinder (130) being used to measure the swing of the upper shaft (110) of the hydro-generator in the horizontal direction.

6. A hydroelectric generator winching device for a hydropower station according to claim 1, characterized in that: The invention also comprises a disc brake mechanism (50), wherein the disc brake mechanism (50) comprises a brake disc (51), a brake pad (52) and a clamping drive member (53), wherein the brake disc (51) is fixedly connected to the rotating disc (30), the brake pad (52) is provided with two pieces, and the two pieces are respectively located on two sides of the brake disc (51), and the clamping drive member (53) is fixedly arranged on the frame (10), and the clamping drive member (53) is provided with two groups, and the two groups are respectively connected to the brake pad (52).

7. A hydroelectric generator winching device for a hydropower station according to claim 1, characterized in that: The rotating disk (30) is provided with a limiting groove (32), the force transmission block (31) is clamped in the limiting groove (32), the force transmission block (31) is provided with a through hole (311), the rotating disk (30) is fixed with a bolt (33), the bolt (33) is passed through the through hole (311), a nut (34) is screwed on the bolt (33), and the nut (34) abuts against the upper surface of the force transmission block (31).

8. The hydroelectric generator winching device of a hydropower station according to claim 1, characterized in that: It also comprises a transfer mechanism and an ultrasonic probe (100), wherein the ultrasonic probe (100) is arranged on the outer peripheral side of the upper end shaft (110) of the hydraulic generator, the transfer mechanism is connected to the ultrasonic probe (100), and the transfer mechanism is used to drive the ultrasonic probe (100) to move along the circumferential direction and axial direction of the upper end shaft (110) of the hydraulic generator.

9. A hydroelectric generator winching device for a hydropower station according to claim 8, characterized in that: The transfer mechanism comprises a bracket (60), a roller (70), a roller driving member (80) and a radial driving member (90); the radial driving member (90) is arranged on the bracket (60) and connected to the ultrasonic probe (100); the radial driving member (90) is used to drive the ultrasonic probe (100) to move radially along the upper end shaft (110) of the hydraulic generator; the roller (70) is arranged on the bracket (60); the roller (70) abuts against the shaft collar of the upper end shaft (110) of the hydraulic generator; the roller driving member (80) is arranged on the bracket (60) and connected to the roller (70).

10. A hydroelectric generator winching device for a hydropower station according to claim 9, characterized in that: The roller (70) can roll along the axial direction or the circumferential direction of the upper shaft (110) of the hydro-turbine generator. When the ultrasonic probe (100) is in contact with the shaft collar of the upper shaft (110) of the hydro-turbine generator, the roller (70) can roll along the circumferential direction of the upper shaft (110) of the hydro-turbine generator. When the ultrasonic probe (100) is separated from the shaft collar of the upper shaft (110) of the hydro-turbine generator, the roller (70) can roll along the axial direction of the upper shaft (110) of the hydro-turbine generator.

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