Vertical hydro-generator stator maintenance platform

Abstract

The utility model relates to the technical field of stator maintenance platforms, and discloses a vertical hydro-generator stator maintenance platform which comprises a hydro-generator stator maintenance frame body, the frame body is erected and installed in a hydro-generator stator foundation pit, a lifting ring is sleeved outside the frame body, and the lower portion of the lifting ring is fixedly connected with an operation platform. A winch assembly is installed on the top of the frame body, a main steel cable is arranged on the winch assembly, a plurality of branch steel cables are connected to the end of the main steel cable in a hooked mode, a plurality of hook lugs are fixedly connected to the inner wall of the lifting ring, and the branch steel cables are connected with the hook lugs in a hooked mode. When the winch assembly is started to wind or release the main steel cable, the main steel cable can drive the lifting ring to ascend or descend through the branch steel cable, so that the operation platform is driven to ascend and descend, and a maintainer is driven to ascend and descend for maintenance. And moreover, the staff can overhaul the stator from top to bottom in sequence, so that the stator can be overhauled more comprehensively and conveniently.

Description

Technical Field

[0001] This utility model belongs to the technical field of stator maintenance platform, specifically a vertical hydro generator stator maintenance platform. Background Technology

[0002] Hydropower, as a sustainable and clean energy source, plays an extremely important role in modern social development. Large and medium-sized hydropower units are generally vertically arranged, with the generator positioned above the turbine. This design minimizes moisture damage, ensures better stress distribution on the main shaft and bearings, facilitates turbine assembly, disassembly, and maintenance, and allows for easier civil engineering layout. Large and medium-sized vertical hydropower generators typically have large stators and are quite tall. When overhauling the stator, the rotor is first lifted out, and a maintenance platform is installed in the pit, allowing maintenance personnel easy access to the stator bore for repairs.

[0003] A search revealed a vertical hydro-generator stator maintenance platform, as disclosed in announcement number CN212752074U. Its main features include: a bottom large platform, a combined frame, an intermediate ring platform, a top ring platform, stairs, and guardrails. During stator maintenance, the stator maintenance platform is constructed at the generator installation site and, after passing inspection, is hoisted into the generator pit as a whole. Construction begins with assembling the circular frame of the bottom large platform, the bottom anti-slip base plate, and the kickboard; installing the combined frame; laying the base plates, kickboards, and guardrails of the intermediate and top ring platforms; stairs are provided between adjacent platforms, with foldable covers at the stair entrances and exits, which remain closed when no personnel are using them. Similarly, under normal conditions, the foldable cover in the center of the bottom anti-slip base plate is closed, and the bottom large platform isolates the turbine room from the generator wind tunnel.

[0004] In actual use, the applicant found that the above-described hydro-generator electronic maintenance platform requires personnel to climb ladders back and forth to maintain stators at different heights, which is labor-intensive. Furthermore, the stators located on the circular platform are obstructed by the platform, making it inconvenient for maintenance personnel to perform maintenance on this part. In order to solve the above-mentioned problems, a vertical hydro-generator stator maintenance platform is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a vertical hydro-generator stator maintenance platform in order to solve the problems mentioned above.

[0006] The technical solution adopted by this utility model is as follows: A vertical hydro-generator stator maintenance platform includes a frame for hydro-generator stator maintenance. The frame is erected and installed in the stator foundation pit of the hydro-generator. A lifting ring is fitted around the outside of the frame. An operating platform is fixedly connected to the lower part of the lifting ring. A winch assembly is installed on the top of the frame. A main steel cable is provided on the winch assembly. Multiple branch steel cables are hooked to the end of the main steel cable. Multiple hook lugs are fixedly connected to the inner wall of the lifting ring. The branch steel cables are hooked to the hook lugs.

[0007] In a preferred embodiment, the frame includes a base plate, on which a vertical arc-shaped support plate is fixedly installed, and a top plate is fixedly installed at the top of the vertical arc-shaped support plate.

[0008] In a preferred embodiment, a sliding groove is constructed on the vertical arc-shaped support plate, and multiple T-shaped guide wheel frames are fixedly installed on the inner wall of the lifting ring. Two rotatable guide wheels are installed on the T-shaped guide wheel frames, and the guide wheels can be positioned and rolled within the sliding groove.

[0009] In a preferred embodiment, a circular hole is provided at the center of the top plate, and the main steel cable passes through the circular hole.

[0010] In a preferred embodiment, the top surface of the top plate is fixedly connected with a plurality of lifting lugs.

[0011] In a preferred embodiment, the winch assembly includes two bearing seats and a motor. The bearing seats and the motor are both fixedly mounted on the top plate. A winch is rotatably connected to the bearing seats via bearings. The main steel cable is wound around the winch. The motor is connected to the winch via an output shaft.

[0012] In a preferred embodiment, a ladder is provided at the top frame and the opening of the stator foundation pit.

[0013] In a preferred embodiment, a ladder is fixedly installed on the top plate.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the start of the winch assembly winds up or releases the main steel cable. The main steel cable can drive the lifting ring to rise or fall through the branch steel cable, thereby driving the operating platform to rise and fall, and thus driving the maintenance personnel to rise and fall for maintenance. Compared with the existing fixed maintenance platform, personnel do not need to climb ladders to climb and maintain the stator, reducing the workload. Moreover, personnel can maintain the stator from top to bottom one by one, making the maintenance more comprehensive and convenient. Attached Figure Description

[0016] Figure 1This is a simplified schematic diagram of the front view of the present utility model;

[0017] Figure 2 This is a simplified schematic diagram of the three-dimensional structure of this utility model;

[0018] Figure 3 This is a simplified three-dimensional structural diagram of the winch assembly and operating platform in this utility model;

[0019] Figure 4 This is a simplified three-dimensional structural diagram of the T-shaped guide wheel frame and guide wheel of this utility model.

[0020] The markings in the diagram are: 1-Frame, 2-Lifting ring, 3-Operating platform, 4-Windlock assembly, 5-Main steel cable, 6-Branch steel cable, 7-Hook lug, 8-Base plate, 9-Vertical arc support plate, 10-Top plate, 11-Slide groove, 12-T-type guide wheel frame, 13-Guide wheel, 14-Round hole, 15-Lifting lug, 16-Bearing seat, 17-Motor, 18-Windlock, 19-Ladder, 20-Climbing ladder. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] The following will combine Figures 1-4 This invention provides a detailed description of a vertical hydro-generator stator maintenance platform according to an embodiment of the present invention.

[0023] Example:

[0024] This utility model embodiment provides a vertical hydro-generator stator maintenance platform, referenced. Figures 1 to 4As shown, the structure includes a frame 1 for overhauling the stator of a hydro-generator. The frame 1 is installed inside the stator pit of the hydro-generator. A lifting ring 2 is fitted onto the outside of the frame 1. An operating platform 3 is fixedly connected to the lower part of the lifting ring 2. A winch assembly 4 is installed on the top of the frame 1. A main steel cable 5 is installed on the winch assembly 4. Multiple branch steel cables 6 are hooked to the end of the main steel cable 5. Multiple hook lugs 7 are fixedly connected to the inner wall of the lifting ring 2. The branch steel cables 6 are hooked to the hook lugs 7. In this structure, personnel can stand on the operating platform. 3. The stator of the vertical hydro-generator can be inspected and repaired. During use, the winch assembly 4 can be started to wind up or release the main steel cable 5. The main steel cable 5 can drive the lifting ring 2 to rise or fall through the support steel cable 6, thereby driving the operating platform 3 to rise and fall, and thus driving the maintenance personnel to rise and fall for maintenance. Compared with the existing fixed maintenance platform, personnel do not need to climb ladders to inspect the stator, reducing the workload. Moreover, personnel can inspect the stator from top to bottom one by one, making the maintenance more comprehensive and convenient.

[0025] It should be noted that the winch assembly 4 mentioned above is operated by manual control by maintenance personnel.

[0026] refer to Figures 1 to 4 As shown, the frame 1 includes a base plate 8, a vertical arc-shaped support plate 9 is fixedly installed on the base plate 8, and a top plate 10 is fixedly installed at the top of the vertical arc-shaped support plate 9. In this structure, the base plate 8, the vertical arc-shaped support plate 9 and the top plate 10 are used to form the frame 1 structure.

[0027] refer to Figures 1 to 4 As shown, a sliding groove 11 is constructed on the vertical arc-shaped support plate 9, and multiple T-shaped guide wheel frames 12 are fixedly installed on the inner wall of the lifting ring 2. Two rotatable guide wheels 13 are installed on the T-shaped guide wheel frames 12. The guide wheels 13 can be positioned and rolled in the sliding groove 11. In this structure, the guide wheels 13 on the T-shaped guide wheel frames 12 roll in the sliding groove 11 on the vertical arc-shaped support 9, thereby guiding the movement of the lifting ring 2.

[0028] refer to Figures 1 to 4 As shown, a circular hole 14 is provided at the center of the top plate 10, through which the main steel cable 5 passes. This structure allows the main steel cable 5 to pass through the top plate 10.

[0029] refer to Figures 1 to 4 As shown, multiple lifting lugs 15 are fixedly connected to the top surface of the top plate 10. This structure utilizes the lifting lugs 15 to facilitate the hoisting of the entire frame 1.

[0030] refer to Figures 1 to 4As shown, the winch assembly 4 includes two bearing seats 16 and a motor 17. Both the bearing seats 16 and the motor 17 are fixedly mounted on the top plate 10. A winch 18 is rotatably connected to the bearing seats 16 via bearings. The main steel cable 5 is wound on the winch 18. The motor 17 is connected to the winch 18 via an output shaft. In this structure, the forward and reverse rotation of the motor 17 drives the winch 18 to rotate on the bearing seats 16, thereby using the winch 18 to wind up and unwind the main steel cable 5.

[0031] refer to Figures 1 to 4 As shown, a ladder 19 is installed at the top plate 10 and the stator foundation pit opening, which facilitates personnel to climb the frame 1.

[0032] refer to Figures 1 to 4 As shown, a ladder 20 is fixedly installed on the top plate 10, which facilitates personnel to climb onto the operating platform 3.

[0033] The implementation principle of the vertical hydro-generator stator maintenance platform in this application embodiment is as follows: When the stator of the hydro-generator is being maintained, the frame is hoisted into the stator pit by a crane and fixed in place. Then, the ladder 19 is hoisted and installed. Stator maintenance personnel can then climb onto the frame 1 via the ladder 19 and then onto the operating platform 3 via the ladder 20. Personnel can stand on the operating platform 3 to maintain the vertical hydro-generator stator. During use, the motor 17 can be started in both forward and reverse directions to drive the winch 18 to rotate on the bearing seat 16, thereby driving the winch 18 to raise and lower the main steel cable 5. The main steel cable 5 can drive the lifting ring 2 to rise or fall via the support steel cable 6, thereby raising and lowering the operating platform 3, and thus allowing maintenance personnel to rise and fall for maintenance. Compared with the existing fixed maintenance platform, personnel do not need to climb ladders to maintain the stator, reducing the workload. Furthermore, personnel can maintain the stator from top to bottom in sequence, making the maintenance more comprehensive and convenient.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vertical hydrogenerator stator maintenance platform comprising a frame (1) for hydrogenerator stator maintenance, characterized in that: The frame body (1) is installed in the water turbine generator stator foundation pit, the outer sleeve of the frame body (1) is lifted into the lifting ring (2), the lower part of the lifting ring (2) is fixedly connected with the operation platform (3), the top of the frame body (1) is provided with the winch assembly (4), the main steel cable (5) is arranged on the winch assembly (4), the end of the main steel cable (5) is hooked with a plurality of branch steel cables (6), a plurality of hooks (7) are fixedly connected on the inner wall of the lifting ring (2), and the branch steel cables (6) are hooked with the hooks (7).

2. A vertical hydraulic generator stator maintenance platform according to claim 1, characterized in that: The frame body (1) comprises a bottom plate (8), and the vertical arc-shaped supporting plates (9) are fixedly installed on the bottom plate (8).

3. A vertical hydraulic generator stator maintenance platform according to claim 2, characterized in that: The vertical arc-shaped supporting plates (9) are provided with sliding grooves (11), and a plurality of T-shaped guide roller frames (12) are fixedly installed on the inner wall of the lifting ring (2).

4. A vertical hydraulic generator stator maintenance platform according to claim 2, characterized in that: The center of the top plate (10) is provided with a circular hole (14), and the main steel cable (5) penetrates through the circular hole (14).

5. A vertical hydraulic generator stator maintenance platform according to claim 2, characterized in that: The top surface of the top plate (10) is fixedly connected with a plurality of lifting lugs (15).

6. A vertical hydraulic generator stator maintenance platform according to claim 2, characterized in that: The winch assembly (4) comprises two bearing seats (16) and a motor (17), the bearing seats (16) and the motor (17) are fixedly installed on the top plate (10), the winch assembly (4) comprises two bearing seats (16) and a motor (17), the bearing seats (16) and the motor (17) are fixedly installed on the top plate (10), the bearing seats (16) are rotatably connected with winches (18) through bearings, the main steel cable (5) is wound on the winches (18), and the motor (17) is connected with the winches (18) through an output shaft.

7. A vertical hydraulic generator stator maintenance platform according to claim 2, characterized in that: The top plate (10) and the stator foundation pit opening are provided with a ladder (19).

8. A vertical hydraulic generator stator maintenance platform according to claim 2, characterized in that: The top plate (10) is fixedly installed on the top plate (10).

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