Rotating mechanism of a hydroelectric power plant's turbine generator

Abstract

The present invention provides a rotating device for a hydroelectric generator that enables precise control of the rotation angle. [Solution] The rotating device of a hydroelectric turbine generator includes a support frame, a drive assembly, a turntable, and a turntable seat. The turntable is connected to the drive assembly and has at least one set of power transmission blocks. The turntable has at least one set of force-applying blocks corresponding to the power transmission blocks, with two force-applying blocks in each set, and the power transmission blocks are located between the two force-applying blocks, with the distance between the two force-applying blocks being greater than the width of the power transmission blocks. As a result, in the process of the turntable moving from constant-speed rotation to deceleration braking, the power transmission blocks first separate from one force-applying block and then come into contact with the other force-applying block. In the process of the power transmission blocks separating from one force-applying block and coming into contact with the other force-applying block, the turntable and turntable seat detach, resulting in low inertia of the turntable and enabling rapid acceleration and deceleration.

Description

Technical Field

[0001] The present invention relates to the technical field of a turning gear, and particularly relates to the turning gear of a water turbine generator in a hydropower plant.

Background Art

[0002] When performing major inspections and repairs in a hydropower plant, it is necessary to inspect the axis of the water turbine generator unit, ensure the coaxiality of the fixed part and the rotating part, and guarantee the safe and stable operation of the generator unit. Rotation work is required during the axis inspection process. During the rotation process, the rotating part is rotated at different phase angles, and the vibration of the bearing part, the air gap value between the rotor and the stator, the labyrinth ring gap value between the runner and the cover, etc. are recorded. Thereby, the deviation between the actual center and the theoretical center of the unit is identified, and axis adjustment is performed based on the measurement data. If the axis of the unit fails to meet the standards, the vibration and swing of the unit exceed the reference values, which not only affects the performance of the unit but also threatens the safe and stable operation.

[0003]

[0004] ​However, during the rotation process, the rotating part of the generator unit must undergo acceleration and deceleration as it transitions from a stationary state to a rotating state, and then from a rotating state to a stopped state. In the deceleration process, it is necessary to apply a deceleration brake to the generator unit using a motor. However, in conventional automatic rotation devices for hydroelectric generators, an eccentric pin is fixedly connected to the rotation base of the generator's upper shaft. As a result, when the motor applies the deceleration brake, a large amount of inertia is generated with the transmission gear and the generator's upper shaft fixedly connected, reducing the motor's deceleration brake speed. At the same time, a large load is placed on the motor during the deceleration brake process, making it difficult to accurately control the rotation angle of the rotating part of the power generation unit. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Chinese Patent Application Publication No. 111207022 Specification [Overview of the project] [Problems that the invention aims to solve]

[0006] The object of the present invention is to provide a rotating device for a hydroelectric turbine generator in a hydroelectric power plant, and to solve the problem in related technologies where, in the rotation process of an electric rotating device, the motor's deceleration braking speed is slowed down due to the large inertia generated when the transmission gear and the motor's upper shaft are fixedly coupled during deceleration braking by the motor, and furthermore, the motor is subjected to a large load during the deceleration braking process, making it impossible to precisely control the rotation angle of the motor's upper shaft. [Means for solving the problem]

[0007] The rotating device for the turbine generator of a hydroelectric power plant provided by the present invention is realized by the following technical solution. The rotating mechanism of a hydroelectric turbine generator includes a support frame, drive assembly, turntable, and turntable. The drive assembly is installed on the support frame. The rotating disk is connected to the drive assembly, which is used to drive the rotation of the rotating disk, and at least one set of power transmission blocks is installed on the rotating disk. The rotating seat is used to connect to the upper shaft of the turbine generator, and the rotating seat is fitted with at least one set of load-bearing blocks corresponding to the power transmission block, with two load-bearing blocks in each set, and the power transmission block is located between the two load-bearing blocks, and the distance between the two load-bearing blocks is greater than the width of the power transmission block.

[0008] Optionally, the drive assembly includes a rotary motor and rotary gears, the rotary motor being fixedly mounted on the support frame, and a rotary gear ring being mounted on the turntable. Multiple rotary gears are mounted and located on the outer circumference of the rotary gear ring, the rotary gears are connected to the rotary motor, and mesh with the rotary gear ring.

[0009] Optionally, the rotating disc is provided with an oil receiving groove, which is located below the rotating gear and the rotating gear ring, and is used to receive lubricating oil and wear particles from the rotating gear and the rotating gear ring.

[0010] Optionally, the system may further include a rotary encoder, the fixed portion of which is fixedly installed on the support frame, the rotating portion of which is connected to the rotating seat, and the rotary encoder is used to detect the rotation angle of the upper shaft of the hydroelectric generator.

[0011] Optionally, the system may further include laser rangefinders, which are fixedly mounted on the support frame, and which are installed in multiple sets and distributed around the upper shaft of the hydroelectric generator, and which are used to measure the horizontal deflection of the upper shaft of the hydroelectric generator.

[0012] Optionally, the system may further include a disc brake unit, the disc brake unit comprising a brake disc, brake pads, and clamp drive members. The brake disc is fixedly connected to the rotating disc, two brake pads are provided and positioned on both sides of the brake disc, the clamp drive members are fixedly installed on the support frame, and two sets of clamp drive members are provided and each is connected to the brake pads.

[0013] Optionally, the rotating disc is provided with a positioning groove, the power transmission block is fitted into the positioning groove, and the power transmission block is provided with a through hole. A bolt is fixedly installed on the rotating disc, the bolt is installed through the through hole, a nut is screwed onto the bolt, and the nut abuts against the upper surface of the power transmission block.

[0014] Optionally, the system further includes a moving mechanism and an ultrasonic probe, the ultrasonic probe being mounted on the neck of the upper shaft of the turbine generator, and the moving mechanism being connected to the ultrasonic probe. The moving mechanism is used to drive the ultrasonic probe to move it circumferentially and axially on the upper shaft of the turbine generator.

[0015] Optionally, the moving mechanism includes a holder, a roller, a roller driving member, and a radial driving member. The radial driving member is mounted on the holder and connected to the ultrasonic probe, and is used to drive the ultrasonic probe to move it radially along the upper shaft of the hydroelectric generator. The roller is mounted on the holder and contacts the neck of the upper shaft of the hydroelectric generator, and the roller driving member is mounted on the holder and connected to the roller.

[0016] Optionally, the roller is capable of rolling along the axial or circumferential direction of the upper shaft of the hydroelectric generator. When the ultrasonic probe contacts the neck of the upper shaft of the hydroelectric generator, the roller rolls along the circumferential direction of the upper shaft of the hydroelectric generator, and when the ultrasonic probe moves away from the neck of the upper shaft of the hydroelectric generator, the roller rolls along the axial direction of the upper shaft of the hydroelectric generator. [Effects of the Invention]

[0017] In summary, the present invention has at least the following beneficial technical effects. In the rotating device of the hydroelectric turbine generator of the present invention, during the rotation process, the power transmission block is positioned between two force-bearing blocks, and the distance between the two force-bearing blocks is greater than the width of the power transmission block. Therefore, in the process from constant-speed rotation to deceleration braking, the power transmission block first separates from one force-bearing block before coming into contact with the other force-bearing block. During the process in which the power transmission block separates from one force-bearing block and then comes into contact with the other force-bearing block, the rotating disk and the rotating seat temporarily separate, resulting in a small inertia of the rotating disk and enabling rapid acceleration and deceleration. This improves rotational efficiency, keeps the load on the rotating motor relatively low, and allows for precise control of the rotation angle during the rotation process of the upper shaft of the hydroelectric generator. [Brief explanation of the drawing]

[0018] [Figure 1] This is a cross-sectional view from a first viewpoint of the rotating device of a turbine generator in a hydroelectric power plant according to Embodiment 1 of the present application. [Figure 2] This is a magnified view of part A in Figure 1. [Figure 3] This is a cross-sectional view from a second viewpoint of the rotating device of a turbine generator in a hydroelectric power plant according to Embodiment 1 of the present application. [Figure 4] This is a cross-sectional view from a third viewpoint of the rotating device of a turbine generator in a hydroelectric power plant according to Embodiment 1 of the present invention. [Figure 5] This is a magnified view of section B in Figure 4. [Figure 6]It is a cross-sectional view from the fourth perspective of the rotating device of the water turbine generator in the hydropower plant in Example 1 of the present application. [Figure 7] It is a partial enlarged view of part C in FIG. 6. [Figure 8] It is a schematic structural diagram of a moving mechanism and an ultrasonic probe in Example 2 of the present application. [Figure 9] It is a cross-sectional view from the first perspective of the moving mechanism and the ultrasonic probe in Example 2 of the present application. [Figure 10] It is a partial enlarged view of part M in FIG. 9. [Figure 11] It is a cross-sectional view from the second perspective of the moving mechanism and the ultrasonic probe in Example 2 of the present application. [Figure 12] It is a partial enlarged view of part N in FIG. 9.

Embodiments for Carrying out the Invention

[0019] Hereinafter, referring to FIGS. 1 to 12, the present application will be described in more detail. Example 1 This example discloses a rotating device of a water turbine generator in a hydropower plant. The rotating device of the water turbine generator in the hydropower plant includes a support frame 10, a drive assembly 20, a rotating disk 30, a rotating seat 40, a rotary encoder 120, a laser distance meter 130, and a disk brake unit 50. Referring to FIGS. 1 and 2. The drive assembly 20 is installed on the support frame 10. The rotating disk 30 is connected to the drive assembly 20, and the drive assembly 20 is used to drive the rotation of the rotating disk 30. More specifically, the drive assembly 20 includes a rotating motor 21 and a rotating gear 22. The rotating motor 21 is fixedly installed on the support frame 10. A rotating gear ring 35 is installed on the rotating disk 30, and a plurality of rotating gears 22 are provided and located on the outer peripheral side of the rotating gear ring 35. The rotating gear 22 is connected to the rotating motor 21 via a speed reducer 23 and meshes with the rotating gear ring 35. An oil receiving groove 36 is provided on the rotating disk 30. The oil receiving groove 36 is located below the rotating gear 22 and the rotating gear ring 35. The oil receiving groove 36 is used to receive lubricating oil and wear powder from the rotating gear 22 and the rotating gear ring 35.

[0020] Refer to Figures 3 to 5. The rotating disc 30 is provided with at least one set of power transmission blocks 31. In one embodiment, the specific connection relationship between the power transmission blocks 31 and the rotating disc 30 is as follows: The rotating disc 30 is provided with a positioning groove 32, and the power transmission blocks 31 are fitted into the positioning groove 32. The power transmission blocks 31 are provided with through holes 311, and bolts 33 are fixedly installed on the rotating disc 30. The bolts 33 are installed through the through holes 311, nuts 34 are screwed onto the bolts 33, and the nuts 34 abut against the upper surface of the power transmission blocks 31. The rotating seat 40 is used to connect to the upper shaft 110 of the turbine generator. During rotation, the rotating seat 40 can be fixedly connected to the upper shaft 110 of the turbine generator by connecting members such as bolts. At least one pair of force-bearing blocks 41 corresponding to the power transmission block 31 is installed on the rotating seat 40. Two force-bearing blocks 41 are installed in each pair, and the power transmission block 31 is located between the two force-bearing blocks 41 and is in contact with the upper surface of the rotating seat 40. The distance between the two force-bearing blocks 41 is greater than the width of the power transmission block 31. In this embodiment, two pairs each of power transmission blocks 31 and force-bearing blocks 41 are installed and are evenly distributed in the circumferential direction. The fixed portion of the rotary encoder 120 is fixedly installed on the support frame 10 via a bracket 121. The rotating portion 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 shaft 110 of the hydroelectric generator. The laser distance meter 130 is fixedly installed on the support frame 10. Multiple sets of laser distance meters 130 are installed and distributed around the rotation measurement points of the turbine generator unit. The laser distance meter 130 is used to measure the horizontal runout of the turbine generator's rotating shaft, thereby identifying the deviation between the actual center and the theoretical center of the turbine generator's rotating part, and making adjustments based on the measurement data.

[0021] Refer to Figures 6 and 7. The disc brake mechanism 50 includes a brake disc 51, brake pads 52, and clamp drive members 53. The brake disc 51 is fixedly connected to the rotating disc 30. Two brake pads 52 are provided, each positioned on either side of the brake disc 51. The clamp drive members 53 are fixedly installed on the support frame 10, and two sets of clamp drive members 53 are provided, each connected to a brake pad 52. A 35 MPa hydraulic 1000 jack can be used as the clamp drive member 53.

[0022] The rotating device of the turbine generator in this embodiment of the hydroelectric power plant includes the following steps as a rotational operation process. In S1, the rotary motor 21 drives the rotary gear 22 to rotate, and then the rotary gear 22 drives the rotary gear ring 35, the turntable 30, and the power transmission block 31 to rotate. After the power transmission block 31 makes contact with one of the force-applying blocks 41 in each pair (of the force-applying blocks 41 in each pair, the block that is in contact with the power transmission block 31 at that time is denoted as force-applying block A 41, and the other block that is not in contact with the power transmission block 31 is denoted as force-applying block B 41), the rotary motor 21 begins to accelerate slowly, and the acceleration of the turntable 30 and the turntable 40 is approximately 0.017° / s². 2 This process continues for 30 seconds until the speed of the rotating disc 30 and the rotating seat 40 reaches 0.5° / s. In step S2, after the speed of the rotating disc 30 and the rotating seat 40 reaches 0.5° / s, this constant-speed rotation state is maintained. In S3, after the turntable 30 and the turntable 40 have rotated to a certain angle (for example, when the specified rotation angle is 45° and they have actually rotated to 30°), pre-deceleration is initiated. The turntable 30 is controlled and decelerated by the turntable motor 21, separating the power transmission block 31 from the A-force application block 41. At this time, the turntable 40 and the upper shaft 110 of the turbine generator continue to rotate at 0.5° / s due to inertia. Subsequently, the rotary motor 21 controls the rotary disk 30 to decelerate it to a stop, and then reverses direction to reach 0.5° / s. When the power transmission block 31 is about to contact the B force-applying block 41, it rapidly switches back to forward rotation and accelerates to 0.4° / s. After the power transmission block 31 contacts the B force-applying block 41, it accelerates to 0.5° / s. In the process of the power transmission block 31 separating from the A force-applying block 41 and contacting the B force-applying block 41, the rotary disk 30 detaches from the rotating seat 40, resulting in a small inertia for the rotary disk 30 and enabling rapid acceleration and deceleration. This improves rotational efficiency, keeps the load on the rotary motor 21 relatively low, and allows for precise control of the rotation angle during the rotation process of the turbine generator's rotating section. In S4, after the power transmission block 31 makes contact with the B force application block 41, the rotary motor 21 is controlled to decelerate, driving the turntable 30, the turntable 40, and the turbine generator's rotating section to decelerate and achieve braking. Before braking, the control system calculates the lead braking distance based on the braking speed. For example, if a rotation angle of 45° is set in advance and it is calculated that the braking operation needs to be performed 10° ahead of the inertia angle required for the above operation, the system activates the braking program when the rotation reaches 35°. During the braking process, the rotary braking mechanism 50 can further apply auxiliary braking to the turntable 40 and the turbine generator's rotating section.

[0023] Example 2 This embodiment discloses a rotating device for a turbine generator in a hydroelectric power plant. Referring to Figure 8, the rotating device of the turbine generator in this embodiment further includes a moving mechanism and an ultrasonic probe 100, the ultrasonic probe 100 being provided on the outer circumference of the upper shaft 110 of the turbine generator. The moving mechanism is connected to the ultrasonic probe 100 and differs from Embodiment 1 in that the moving mechanism drives the ultrasonic probe 100 to move along the circumferential and axial directions of the upper shaft 110 of the turbine generator. A moving mechanism drives the ultrasonic probe 100, moving it along the circumferential and axial directions of the upper shaft 110 of the turbine generator. The ultrasonic probe 100 generates an ultrasonic pulse signal and receives a return signal. By analyzing the amplitude, time delay, and waveform changes of the echo signal, the location, shape, and dimensions of defects such as corrosion and cracks in the upper shaft 110 of the turbine generator can be identified, enabling defect detection of the upper shaft 110 of the turbine generator. This allows for timely repair or restoration of defective parts of the upper shaft 110 of the turbine generator, extending the service life of the upper shaft 110 of the turbine generator.

[0024] Refer to Figures 9 to 11. In one embodiment, the moving mechanism can have the following structure. The moving mechanism includes a holder 60, a roller 70, a roller driving member 80, and a radial driving member 90. The radial driving member 90 is provided on the holder 60 and connected to the ultrasonic probe 100. The radial driving member 90 drives the ultrasonic probe 100 to move along the radial direction of the upper shaft 110 of the hydroelectric generator. More specifically, the radial drive member 90 includes a stud 91, a first worm 92, a support seat 93, a screw sleeve 94, and a radial drive motor 95. A first base 61 is installed on the holder 60. The screw sleeve 94 is rotatably mounted on the first base 61. The stud 91 is screw-connected to the screw sleeve 94. The first base 61 is provided with a limiting portion that restricts the rotation of the stud 91. A first worm gear 941 is installed around the screw sleeve 94. The first worm 92 is rotatably mounted on the first base 61 and meshes with the first worm gear 941. The radial drive motor 95 is fixedly mounted on the first base 61 and connected to the first worm 92. The support seat 93 is connected to the stud 91 by a first elastic member. The ultrasonic probe 100 is fixedly mounted on the support seat 93.

[0025] Furthermore, the following structure can be adopted for the limiting section. The limiting section is a bump 611 installed on the first base 61. The stud 91 is provided with an axial groove 911, and the stud 91 is slidably locked to the bump 611 by the axial groove 911. A first spring 96 can be used as the first elastic member, and the connection structure between the support seat 93, the first spring 96, and the stud 91 is as follows. A first slide bar 931 is installed on the support seat 93, and the first slide bar 931 is slidably inserted into the stud 91. The first slide bar 931 is provided with a first fall prevention block 932 to prevent it from falling out of the stud 91. A groove 912 is provided in the stud 91. The first spring 96 is installed covering the outside of the first slide bar 931, and both ends of the first spring 96 abut against the inner walls of the support seat 93 and the groove 912, respectively.

[0026] Refer to Figures 9, 11, and 12. The rollers 70 are installed on the holder 60, and multiple sets of rollers 70 are provided, evenly distributed along the circumferential direction of the upper shaft 110 of the hydroelectric generator. Each set of rollers 70 abuts against the shaft neck of the upper shaft 110 of the hydroelectric generator. The roller drive member 80 is provided on the holder 60 and connected to the rollers 70. A roller drive motor can be used as the roller drive member 80. In one embodiment, the roller 70 is mounted on the holder 60 via a connecting module. More specifically, the connecting module includes a cylindrical body 71 and a wheel frame 72. A second base 62 is mounted on the holder 60. The cylindrical body 71 is rotatably mounted on the second base 62. The wheel frame 72 is connected to the cylindrical body 71 by a second elastic member. The roller 70 is rotatably mounted on the wheel frame 72. The roller drive member 80 is fixed to the wheel frame 72.

[0027] Furthermore, a second spring 73 can be used as the second elastic member, and the specific connection relationship between the wheel frame 72, the second spring 73, and the cylindrical body 71 is as follows: A stopper hole 711 is provided in the cylindrical body 71. A second slide bar 721 is installed on the wheel frame 72, and the second slide bar 721 is slidably inserted into the stopper hole 711. The second slide bar 721 is provided with a second fall prevention block 722 to prevent separation of the second slide bar 721 and the cylindrical body 71. The second spring 73 is installed covering the outside of the second slide bar 721, and both ends of the second spring 73 abut against the wheel frame 72 and the cylindrical body 71, respectively. The second spring 73 allows the roller 70 to be strongly pressed against the neck of the upper shaft 110 of the water turbine generator.

[0028] Refer to Figures 8, 9, 11, and 12. In one embodiment, the radial drive member 90 is connected to the roller 70 via an interlocking unit. More specifically, the interlocking unit includes an interlocking gear ring 97 and a second worm 98. The interlocking gear ring 97 is rotatably mounted on a holder 60. Furthermore, the holder 60 and the interlocking gear ring 97 have an annular structure with one side open. An annular groove 971 is provided in the interlocking gear ring 97, and the interlocking gear ring 97 is rotatably covered on the outside of the holder 60 by the annular groove 971. The first gear 921 is mounted on the first worm 92. The second worm gear 712 is mounted on the cylindrical body 71. The second worm 98 is rotatably mounted on the holder 60 and meshes with the second worm gear 712. The second gear 981 is mounted on the second worm 98. The first gear 921 and the second gear 981 mesh with the interlocking gear ring 97, respectively. The roller 70 is capable of rolling along the axial or circumferential direction of the upper shaft 110 of the hydroelectric generator. When the ultrasonic probe 100 comes into contact with the neck of the upper shaft 110 of the hydroelectric generator, that is, when the ultrasonic probe 100 detects defects in the upper shaft 110 of the hydroelectric generator, the roller 70 rolls along the circumferential direction of the upper shaft 110 of the hydroelectric generator, thereby adjusting the detection position of the ultrasonic probe 100 on the upper shaft 110 of the hydroelectric generator along the circumferential direction, enabling the ultrasonic probe 100 to perform a comprehensive inspection of the upper shaft 110 of the hydroelectric generator along the circumferential direction. When the ultrasonic probe 100 moves away from the neck of the upper shaft 110 of the turbine generator, that is, when the ultrasonic probe 100 temporarily stops detecting defects on the upper shaft 110 of the turbine generator, the roller 70 rolls along the axial direction of the upper shaft 110 of the turbine generator, thereby adjusting the detection position of the ultrasonic probe 100 on the upper shaft 110 of the turbine generator along the axial direction, and moving the ultrasonic probe 100 to the next inspection area of ​​the upper shaft 110 of the turbine generator to perform defect detection.

[0029] The operating principle of the rotating device of the turbine generator in this hydroelectric power plant is as follows: An ultrasonic probe 100 is used to detect defects such as corrosion and cracks present on the upper shaft 110 of the turbine generator. When the ultrasonic probe 100 performs detection, it contacts the neck of the upper shaft 110 of the turbine generator, and the axis of the roller 70 is parallel to the axis of the upper shaft 110 of the turbine generator. During the detection process, the roller 70 is driven and rotated by the roller drive member 80, and the holder 60 is driven to rotate around the axis of the upper shaft 110 of the turbine generator, adjusting the circumferential detection position of the ultrasonic probe 100 on the upper shaft 110 of the turbine generator, and the entire upper shaft 110 of the turbine generator is inspected along the circumferential direction. After the circumferential inspection of a certain section of the upper shaft 110 of the turbine generator is completed, the first worm 92 is driven and rotated by the radial drive motor 95, and the first worm 92 drives and rotates the first worm gear 941 and the screw sleeve 94. The screw sleeve 94 drives the stud 91, moving it radially along the upper shaft 110 of the turbine generator, and detaching the ultrasonic probe 100 from the neck of the upper shaft 110 of the turbine generator. As the first worm 92 rotates, the first gear 921 also rotates synchronously, and the first gear 921 drives the interlocking gear ring 97 to rotate. The interlocking gear ring 97 drives the second gear 981 and the second worm 98 to rotate, and the second worm 98 drives the second worm gear 712 and the cylindrical body 71 to rotate, adjusting the direction of the roller 70 so that the axis of the roller 70 is perpendicular to the axis of the upper shaft 110 of the hydroelectric generator. Next, the roller 70 is driven to rotate by the roller driving member 80, and the holder 60 is driven to move along the axial direction of the upper shaft 110 of the hydroelectric generator, adjusting the detection position of the ultrasonic probe 100 on the upper shaft 110 of the hydroelectric generator along the axial direction, and the ultrasonic probe 100 is moved to the next section of the upper shaft 110 of the hydroelectric generator to perform the inspection. After the ultrasonic probe 100 moves to the next section of the upper shaft 110 of the turbine generator, the radial drive motor 95 drives the ultrasonic probe 100 to contact the neck of the upper shaft 110 of the turbine generator, and at the same time the direction of the roller 70 is switched and adjusted so that the axis of the roller 70 and the axis of the upper shaft 110 of the turbine generator are parallel.

[0030] The embodiments described herein are all preferred embodiments of the present application and do not limit the scope of protection of the present application. Identical parts are indicated by the same reference numerals. All equivalent modifications based on the structure, shape, and principle of the present application should be included within the scope of protection of the present application.

[0031] (Note) (Note 1) A rotating device for a turbine generator in a hydroelectric power plant, It includes a support frame (10), a drive assembly (20), a turntable (30), and a turntable (40), The drive assembly (20) is installed on the support frame (10), The rotating disk (30) is connected to the drive assembly (20), the drive assembly (20) is used to drive the rotation of the rotating disk (30), and at least one set of power transmission blocks (31) is installed on the rotating disk (30). The rotating seat (40) is used to connect to the upper shaft (110) of the turbine generator, and at least one set of load-bearing blocks (41) corresponding to the power transmission block (31) is installed on the rotating seat (40), and each set of load-bearing blocks (41) consists of two units, and the power transmission block (31) is located between the two load-bearing blocks (41), and the distance between the two load-bearing blocks (41) is greater than the width of the power transmission block (31). A rotating device for a turbine generator in a hydroelectric power plant, characterized by the following features.

[0032] (Note 2) The drive assembly (20) includes a rotary motor (21) and a rotary gear (22), the rotary motor (21) is fixedly installed on the support frame (10), a rotary gear ring (35) is installed on the rotating disc (30), a plurality of rotary gears (22) are installed and located on the outer circumference of the rotary gear ring (35), the rotary gears (22) are connected to the rotary motor (21) and mesh with the rotary gear ring (35), A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 1, characterized by the features described above.

[0033] (Note 3) The rotating disc (30) is provided with an oil receiving groove (36), which is located below the rotating gear (22) and the rotating gear ring (35), and is used to receive lubricating oil and wear particles from the rotating gear (22) and the rotating gear ring (35). A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 2, characterized by the features described above.

[0034] (Note 4) The system further includes a rotary encoder (120), the fixed portion of which is fixedly installed on the support frame (10), the rotating portion of which is connected to the rotating seat (40), and the rotary encoder (120) is used to detect the rotation angle of the upper shaft (110) of the hydroelectric generator. A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 1, characterized by the features described above.

[0035] (Note 5) The system further includes a laser rangefinder (130), the laser rangefinder (130) being fixedly mounted on the support frame (10), multiple sets of the laser rangefinders (130) being installed and distributed around the upper shaft (110) of the hydroelectric generator, and the laser rangefinders (130) being used to measure the horizontal deflection of the upper shaft (110) of the hydroelectric generator. A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 1, characterized by the features described above.

[0036] (Note 6) The present invention further includes a disc brake unit (50), the disc brake unit (50) comprising a brake disc (51), brake pads (52), and clamp drive members (53), wherein the brake disc (51) is fixedly connected to the rotating disc (30), two brake pads (52) are provided and positioned on both sides of the brake disc (51), the clamp drive members (53) are fixedly installed on the support frame (10), and two sets of clamp drive members (53) are provided and each is connected to the brake pads (52). A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 1, characterized by the features described above.

[0037] (Note 7) A positioning groove (32) is provided in the rotating disc (30), the power transmission block (31) is fitted into the positioning groove (32), a through hole (311) is provided in the power transmission block (31), a bolt (33) is fixedly installed on the rotating disc (30), the bolt (33) is installed through the through hole (311), a nut (34) is screwed onto the bolt (33), and the nut (34) abuts against the upper surface of the power transmission block (31). A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 1, characterized by the features described above.

[0038] (Note 8) The apparatus further includes a moving mechanism and an ultrasonic probe (100), wherein the ultrasonic probe (100) is installed on the outer circumference of the upper shaft (110) of the hydroelectric generator, the moving mechanism is connected to the ultrasonic probe (100), and the moving mechanism is used to drive the ultrasonic probe (100) to move it in the circumferential and axial directions of the upper shaft (110) of the hydroelectric generator. A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 1, characterized by the features described above.

[0039] (Note 9) The moving mechanism includes a holder (60), a roller (70), a roller driving member (80), and a radial driving member (90), wherein the radial driving member (90) is installed on the holder (60) and connected to the ultrasonic probe (100), and the radial driving member (90) is used to drive the ultrasonic probe (100) to move it radially on the upper shaft (110) of the hydroelectric generator, the roller (70) is installed on the holder (60) and contacts the shaft neck of the upper shaft (110) of the hydroelectric generator, and the roller driving member (80) is installed on the holder (60) and connected to the roller (70). A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 8, characterized by the features described above.

[0040] (Note 10) The roller (70) is capable of rolling along the axial or circumferential direction of the upper shaft (110) of the hydroelectric generator. When the ultrasonic probe (100) contacts the neck of the upper shaft (110) of the hydroelectric generator, the roller (70) rolls along the circumferential direction of the upper shaft (110) of the hydroelectric generator. When the ultrasonic probe (100) moves away from the neck of the upper shaft (110) of the hydroelectric generator, the roller (70) rolls along the axial direction of the upper shaft (110) of the hydroelectric generator. A rotating device for a turbine generator of a hydroelectric power plant as described in Appendix 9, characterized by the features described herein. [Explanation of symbols]

[0041] 10. Support frame; 20. Drive assembly; 21. Rotary motor; 22. Rotary gear; 23. Reducer; 30. Turntable; 31. Power transmission block; 311. Through hole; 32. Positioning groove; 33. Bolt; 34. Nut; 35. Rotary gear ring; 36. Oil receiving groove; 40. Rotary seat; 41. Force-applying block; 50. Disc brake mechanism; 51. Brake disc; 52. Brake pad; 53. Clamp drive member; 60. Holder; 61. First base; 611. Bump; 62. Second base; 70. Roller; 71. Cylindrical body; 711. Stopper hole; 712. Second worm gear; 72. Wheel frame; 721. Second slide Bar; 722, Second anti-drop block; 73, Second spring; 80, Roller drive member; 90, Radial drive member; 91, Stud; 911, Axial groove; 912, Recessed groove; 92, First worm; 921, First gear; 93, Support seat; 931, First slide bar; 932, First anti-drop block; 94, Screw sleeve; 941, First worm gear; 95, Radial drive motor; 96, First spring; 97, Interlocking gear ring; 971, Annular groove; 98, Second worm; 981, Second gear; 100, Ultrasonic probe; 110, Upper shaft; 120, Rotary encoder; 121, Bracket; 130, Laser distance meter.

Claims

1. A rotating device for a turbine generator in a hydroelectric power plant, It includes a support frame (10), a drive assembly (20), a turntable (30), and a turntable (40), The drive assembly (20) is installed on the support frame (10), The rotating disk (30) is connected to the drive assembly (20), the drive assembly (20) is used to drive the rotation of the rotating disk (30), and at least one set of power transmission blocks (31) are installed on the rotating disk (30). The rotating seat (40) is used to connect to the upper shaft (110) of the turbine generator, and at least one set of load-bearing blocks (41) corresponding to the power transmission block (31) is installed on the rotating seat (40), and each set of load-bearing blocks (41) consists of two units, and the power transmission block (31) is located between the two load-bearing blocks (41), and the distance between the two load-bearing blocks (41) is greater than the width of the power transmission block (31). A rotating device for a turbine generator in a hydroelectric power plant, characterized by the following features.

2. The drive assembly (20) includes a rotary motor (21) and a rotary gear (22), the rotary motor (21) is fixedly installed on the support frame (10), a rotary gear ring (35) is installed on the rotating disk (30), a plurality of rotary gears (22) are installed and located on the outer circumference of the rotary gear ring (35), the rotary gears (22) are connected to the rotary motor (21) and mesh with the rotary gear ring (35), The rotating device for a turbine generator of a hydroelectric power plant according to feature 1.

3. The rotating disc (30) is provided with an oil receiving groove (36), which is located below the rotating gear (22) and the rotating gear ring (35), and is used to receive lubricating oil and wear particles from the rotating gear (22) and the rotating gear ring (35). The rotating device for a turbine generator of a hydroelectric power plant according to feature 2.

4. The present invention further includes a rotary encoder (120), the fixed portion of the rotary encoder (120) being fixedly installed on the support frame (10), the rotating portion of the rotary encoder (120) being connected to the rotating seat (40), and the rotary encoder (120) being used to detect the rotation angle of the upper end shaft (110) of the hydroelectric generator. The rotating device for a turbine generator of a hydroelectric power plant according to feature 1.

5. The system further includes a laser distance meter (130), the laser distance meter (130) being fixedly installed on the support frame (10), multiple sets of the laser distance meter (130) being installed and distributed around the upper shaft (110) of the hydroelectric generator, and the laser distance meter (130) being used to measure the horizontal deflection of the upper shaft (110) of the hydroelectric generator. The rotating device for a turbine generator of a hydroelectric power plant according to feature 1.

6. The present invention further includes a disc brake unit (50), the disc brake unit (50) comprising a brake disc (51), brake pads (52), and clamp drive members (53), wherein the brake disc (51) is fixedly connected to the rotating disc (30), two brake pads (52) are provided and are positioned on both sides of the brake disc (51), the clamp drive members (53) are fixedly installed on the support frame (10), and two sets of clamp drive members (53) are provided and each is connected to the brake pads (52). The rotating device for a turbine generator of a hydroelectric power plant according to feature 1.

7. A positioning groove (32) is provided in the rotating disc (30), the power transmission block (31) is fitted into the positioning groove (32), a through hole (311) is provided in the power transmission block (31), a bolt (33) is fixedly installed on the rotating disc (30), the bolt (33) is installed through the through hole (311), a nut (34) is screwed onto the bolt (33), and the nut (34) abuts against the upper surface of the power transmission block (31). The rotating device for a turbine generator of a hydroelectric power plant according to feature 1.

8. The device further includes a moving mechanism and an ultrasonic probe (100), wherein the ultrasonic probe (100) is installed on the outer circumference of the upper shaft (110) of the hydroelectric generator, the moving mechanism is connected to the ultrasonic probe (100), and the moving mechanism is used to drive the ultrasonic probe (100) to move it in the circumferential and axial directions of the upper shaft (110) of the hydroelectric generator. The rotating device for a turbine generator of a hydroelectric power plant according to feature 1.

9. The moving mechanism includes a holder (60), a roller (70), a roller driving member (80), and a radial driving member (90), wherein the radial driving member (90) is installed on the holder (60) and connected to the ultrasonic probe (100), and the radial driving member (90) is used to drive the ultrasonic probe (100) to move it radially on the upper shaft (110) of the hydroelectric generator, the roller (70) is installed on the holder (60) and contacts the neck of the upper shaft (110) of the hydroelectric generator, and the roller driving member (80) is installed on the holder (60) and connected to the roller (70). The rotating device for a turbine generator of a hydroelectric power plant according to feature 8.

10. The roller (70) is capable of rolling along the axial or circumferential direction of the upper shaft (110) of the hydroelectric generator. When the ultrasonic probe (100) contacts the neck of the upper shaft (110) of the hydroelectric generator, the roller (70) rolls along the circumferential direction of the upper shaft (110) of the hydroelectric generator. When the ultrasonic probe (100) moves away from the neck of the upper shaft (110) of the hydroelectric generator, the roller (70) rolls along the axial direction of the upper shaft (110) of the hydroelectric generator. The rotating device for a turbine generator of a hydroelectric power plant according to feature 9.

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