Monitoring device for maintenance of generator stator of hydraulic power plant

Abstract

The utility model discloses a monitoring device for maintenance of a generator stator of a hydraulic power plant. The monitoring device comprises an L-shaped bracket and a connecting seat. According to the monitoring device for maintenance of the generator stator of the hydraulic power plant, a shell of a monitoring camera body is fixedly connected with a connecting base corresponding to and matched with an L-shaped bracket, one side of the connecting base is symmetrically and fixedly connected with two positioning columns, positioning holes are formed in the positions, corresponding to the positioning columns, of the L-shaped bracket, and a contraction cavity is formed in the bottom face of the connecting base; a plug matched with the contraction cavity is slidably connected into the contraction cavity, a spring is fixedly connected between the inner side of the plug and the inner wall of the top of the contraction cavity, a jack is formed in the position, corresponding to the plug, of the L-shaped bracket, and the monitoring camera body is directly placed on the L-shaped bracket through the connecting base. The monitoring camera body can be easily mounted and dismounted only by extruding the plug through three-point vertical staggered limiting, the structure is simple, and dismounting is rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices, in particular to a monitoring device for maintaining a generator stator in a hydropower plant. Background Art

[0002] The generator stator is easily contaminated by oil, dust and other pollutants. If it is not cleaned in time, it will cause ventilation blockage, reduced insulation and other problems. In the prior art, the ventilation grooves, slot wedges, core ends, stator lower ends, insulation boxes and other parts are monitored by cameras before and after cleaning, and the suspicious or seriously dirty parts are sprayed and washed in detail to improve the cleaning and maintenance efficiency.

[0003] In the prior art with Publication (Announcement) Number: CN220118953U, Publication (Announcement) Date: 2023-12-01, a monitoring device for the maintenance of a generator stator in a hydropower plant is disclosed, including a box body, a moving mechanism is installed on the box body, the moving mechanism drives the positioning mechanism to move up and down or left and right, and a camera is detachably installed on the positioning mechanism; the positioning mechanism includes a warehouse body, reset springs are fixed on the left and right sides of the warehouse body, and a moving plate is fixed on the opposite ends of the two reset springs, and a gap is maintained between the two moving plates, and the upper end of each moving plate passes through the warehouse body and is connected to the positioning block, and the two positioning blocks are clamped with the base at the bottom of the camera; when the two moving plates are close, the two positioning blocks are separated from the base. The utility model provides a monitoring device for the maintenance of a generator stator in a hydropower plant, which is convenient for cleaning and maintenance and easy to use.

[0004] However, in the above-mentioned prior art, the surveillance camera is assembled and installed through a positioning mechanism, which has a relatively complex structure and cannot conveniently adjust the installation angle of the surveillance camera, resulting in poor convenience in use. Therefore, a new monitoring device for maintenance of the stator of a hydropower plant generator is proposed to optimize the above-mentioned prior art. Utility Model Content

[0005] The utility model aims to provide a monitoring device for maintaining a generator stator in a hydropower plant to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The lock is located on the left side of the L-shaped bracket, and the lock is located on the left side of the L-shaped bracket.

[0008] As a further solution of the utility model: the outer side of the L-shaped bracket corresponding to the pin shaft is provided with an arc groove concentrically arranged with the pin shaft, and the slider is fixedly connected with a threaded column corresponding to the arc groove. The threaded column passes through the arc groove and can move in the arc groove, and the threaded column is threadedly connected with a hand-tightened nut that matches it.

[0009] As a further solution of the utility model: a long slot for the slider to pass through and move is provided on the side of the column box body, a motor is fixedly connected to the bottom surface of the column box body, a threaded rod is rotatably installed inside the column box body, the thread of the threaded rod passes through the slider, a threaded hole for threaded connection of the threaded rod is provided on the slider, and the output end of the motor is fixedly installed on the threaded rod.

[0010] As a further solution of the utility model: the top of the column box is fixedly connected to a fixed top plate, the bottom of the column box is fixedly connected to a support plate, and a fixed bottom plate of the same size as the fixed top plate is provided below the support plate, the fixed top plate is against the roof of the stator monitoring position of the hydropower plant generator, and the fixed bottom plate is against the ground of the stator monitoring position of the hydropower plant generator.

[0011] As a further solution of the utility model: the fixed base plate is symmetrically fixedly connected with adjusting screws, the adjusting screws movably penetrate the support plate, the support plate is provided with a circular hole for the adjusting screws to pass through, and the adjusting screws are symmetrically threadedly connected with adjusting nuts on both sides of the corresponding support plates.

[0012] As a further solution of the utility model: the fixed top plate and the fixed bottom plate are both provided with fixing holes, and the fixing holes can be used in conjunction with expansion bolts to fix and install the fixed top plate and the fixed bottom plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The monitoring camera body of the utility model is directly placed on the L-shaped bracket through the connecting seat. The whole is installed by three points of vertical staggered limit through the positioning column matching the positioning hole, the plug matching the jack, and the monitoring camera body. When disassembling, it can be easily achieved by squeezing the plug. The structure is simple and the disassembly and assembly are quick.

[0015] 2. The L-shaped bracket of the utility model can be rotated on the end surface of the slider through the pin shaft. During the rotation, the threaded column moves synchronously in the arc groove, and the hand-tightened nut is tightened to squeeze and fix the L-shaped bracket through the hand-tightened nut, thereby realizing the adjustment of the installation inclination angle of the monitoring camera body.

[0016] 3. The utility model drives the threaded rod to rotate by a motor, thereby driving the slider to slide in the column box, thereby controlling the installation height of the monitoring camera body.

[0017] 4. The utility model installs and fixes the device at the stator monitoring position of the generator in the hydropower plant by fixing the top plate and the bottom plate. By adjusting the position of the adjusting nut, the position of the support plate on the adjusting screw is controlled, thereby controlling the installation spacing of the fixed top plate and the fixed bottom plate, which is convenient for installation and fixation in spaces of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a structural schematic diagram of a monitoring device for maintaining a generator stator in a hydropower plant.

[0019] Figure 2 This is an enlarged view of A in a monitoring device for maintaining the stator of a hydropower plant generator.

[0020] Figure 3 The present invention is a cross-sectional view of a slider in a monitoring device for maintaining a generator stator in a hydropower plant.

[0021] Figure 4 The figure is a side view of an L-shaped bracket in a monitoring device for maintaining a generator stator in a hydropower plant.

[0022] In the figure: 1. column box; 2. slider; 3. L-shaped bracket; 4. monitoring camera body; 5. connecting seat; 6. positioning column; 7. positioning hole; 8. contraction cavity; 9. plug; 10. spring; 11. jack; 12. arc groove; 13. threaded column; 14. hand nut; 15. motor; 16. threaded rod; 17. fixed top plate; 18. support plate; 19. fixed bottom plate; 20. adjusting screw; 21. adjusting nut; 22. fixing hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 4 In the embodiment of the utility model, a monitoring device for maintaining the stator of a hydropower plant generator comprises a column box 1, a slider 2 adapted thereto is slidably connected in the column box 1, a vertical cavity for the slider 2 to slide is provided on the column box 1, an L-shaped bracket 3 is installed on one side of the slider 2 after passing through the column box 1 and rotating through a pin shaft, a monitoring camera body 4 is placed on the L-shaped bracket 3, the monitoring camera body 4 is connected to an external monitoring device, a connecting seat 5 corresponding to and adapted to the L-shaped bracket 3 is fixedly connected to the outer shell of the monitoring camera body 4, and one side of the connecting seat 5 is symmetrically fixedly connected with Two positioning columns 6, a positioning hole 7 is provided at the corresponding positioning column 6 on the L-shaped bracket 3, the positioning column 6 is inserted into the positioning hole 7 and matched with the positioning hole 7, a contraction cavity 8 is provided on the bottom surface of the connecting seat 5, a plug 9 matched with it is slidably connected in the contraction cavity 8, a spring 10 is fixedly connected between the inner side of the plug 9 and the inner wall of the top of the contraction cavity 8, a socket 11 is provided on the L-shaped bracket 3 corresponding to the plug 9, the plug 9 is inserted into the socket 11 and matched with the socket 11, the plug 9 is convexly arranged, and the opening edge of the contraction cavity 8 is retracted, so that the plug 9 is slidably confined in the contraction cavity 8.

[0025] The monitoring camera body 4 is directly placed on the L-shaped bracket 3 through the connecting seat 5. The whole is limited by three points of vertical staggered positioning through the positioning column 6 and the positioning hole 7, the plug 9 and the socket 11, so that the monitoring camera body 4 can be installed. When disassembling, it can be easily achieved by squeezing the plug 9. The structure is simple and the disassembly and assembly are quick.

[0026] An arc groove 12 which is concentric with the pin shaft is opened on the outer side of the L-shaped bracket 3 corresponding to the pin shaft, and a threaded column 13 is fixedly connected to the slider 2 corresponding to the arc groove 12. The threaded column 13 passes through the arc groove 12 and can move in the arc groove 12. A hand-tightened nut 14 which is compatible with it is threadedly connected to the threaded column 13.

[0027] The L-shaped bracket 3 can be rotated on the end surface of the slider 2 through the pin shaft. During the rotation, the threaded column 13 moves synchronously in the arc groove 12, and the hand-tightening nut 14 is tightened to squeeze and fix the L-shaped bracket 3 through the hand-tightening nut 14, thereby realizing the adjustment of the installation inclination angle of the monitoring camera body 4.

[0028] A long slot for the slider 2 to pass through and move is provided on the side of the column box 1. A motor 15 is fixedly connected to the bottom surface of the column box 1. The motor 15 is externally connected to a power supply and a switch. A threaded rod 16 is rotatably installed inside the column box 1. The threaded rod 16 passes through the slider 2. A threaded hole for the threaded connection of the threaded rod 16 is provided on the slider 2. The output end of the motor 15 is fixedly installed with the threaded rod 16.

[0029] The threaded rod 16 is driven to rotate by the motor 15 , thereby driving the slider 2 to slide in the column box 1 , thereby controlling the installation height of the monitoring camera body 4 .

[0030] A fixed top plate 17 is fixedly connected to the top of the column box 1, a support plate 18 is fixedly connected to the bottom of the column box 1, a fixed bottom plate 19 of the same size as the fixed top plate 17 is provided below the support plate 18, the fixed top plate 17 is against the roof of the stator monitoring position of the hydropower plant generator, and the fixed bottom plate 19 is against the ground of the stator monitoring position of the hydropower plant generator.

[0031] The fixed bottom plate 19 is symmetrically fixedly connected with an adjusting screw 20 , which movably passes through the supporting plate 18 . The supporting plate 18 is provided with a round hole for the adjusting screw 20 to pass through. The adjusting screw 20 is symmetrically threadedly connected with an adjusting nut 21 on both sides of the supporting plate 18 .

[0032] The fixed top plate 17 and the fixed bottom plate 19 are both provided with fixing holes 22 , and the fixing holes 22 can cooperate with expansion bolts to fix and install the fixed top plate 17 and the fixed bottom plate 19 .

[0033] The device is installed and fixed at the stator monitoring position of the generator in the hydropower plant by fixing the top plate 17 and the bottom plate 19. The position of the support plate 18 is controlled on the adjusting screw 20 by adjusting the position of the nut 21, thereby controlling the installation spacing between the top plate 17 and the bottom plate 19, which is convenient for installation and fixation in spaces of different heights.

[0034] The working principle of the utility model is:

[0035] When in use, place the device at the monitoring position of the generator stator of the hydropower plant, adjust the position of the adjusting nut 21 on the adjusting screw 20, and adjust the height of the support plate 18, so that the fixed top plate 17 is against the roof position while the fixed bottom plate 19 falls on the ground. At this time, the fixed top plate 17 and the fixed bottom plate 19 are fixedly installed by the expansion bolts and the fixing holes 22. At this time, the monitoring camera body 4 to be installed can be placed on the L-shaped bracket 3 through the connecting seat 5, and squeezed downward so that the plug 9 is pressed into the contraction cavity 8. At this time, the positioning column 6 is inserted into the positioning hole 7, and the plug 9 and the jack 11 are fixed together. Correspondingly, at this time, the plugs 9 on the left and right sides of the spring 10 pop out from the contraction cavity 8 and are inserted into the plug hole 11 to form a fixation. At this time, the hand nut 14 is loosened so that the L-shaped bracket 3 can be rotated by the pin shaft to adjust the inclination of the monitoring camera body 4, and then the hand nut 14 is tightened. With the cooperation of the threaded column 13, the L-shaped bracket 3 is fixed. At this time, the motor 15 is further started to drive the threaded rod 16 to rotate, thereby driving the slider 2 to slide upward in the column box 1, thereby controlling the installation height of the monitoring camera body 4, so as to facilitate the monitoring camera body 4 to continuously monitor the stator of the hydropower plant generator.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A monitoring device for maintaining a generator stator in a hydropower plant, comprising a column housing (1), characterized in that: The column box (1) is slidably connected with a sliding block (2) adapted thereto; one side of the sliding block (2) passes through the column box (1) and is rotatably mounted with an L-shaped bracket (3) via a pin shaft; a monitoring camera body (4) is placed on the L-shaped bracket (3); a connecting seat (5) corresponding to and adapted to the L-shaped bracket (3) is fixedly connected to the outer shell of the monitoring camera body (4); one side of the connecting seat (5) is symmetrically fixedly connected with two positioning columns (6); a position on the L-shaped bracket (3) corresponding to the positioning column (6) is A positioning hole (7) is provided, a positioning column (6) is inserted into the positioning hole (7) and matches the positioning hole (7), a contraction cavity (8) is provided on the bottom surface of the connection seat (5), a plug (9) matching the contraction cavity (8) is slidably connected therein, a spring (10) is fixedly connected between the inner side of the plug (9) and the inner wall of the top of the contraction cavity (8), a plug hole (11) is provided on the L-shaped bracket (3) corresponding to the plug (9), the plug (9) is inserted into the plug hole (11) and matches the plug hole (11).

2. A monitoring device for maintaining a generator stator in a hydropower plant according to claim 1, characterized in that: The L-shaped bracket (3) is provided with an arc groove (12) coaxially arranged with the pin shaft on the outer side corresponding to the pin shaft, and the slider (2) is fixedly connected with a threaded column (13) at the position corresponding to the arc groove (12), and a hand-tightening nut (14) matching with the threaded column (13) is threadedly connected to the threaded column (13).

3. A monitoring device for maintaining a generator stator in a hydropower plant according to claim 1, characterized in that: The side of the column box (1) is provided with a long slot for the slider (2) to pass through and move. The bottom surface of the column box (1) is fixedly connected to a motor (15) fixedly installed. A threaded rod (16) is rotatably installed inside the column box (1). The threaded rod (16) passes through the slider (2) through a thread. The output end of the motor (15) is fixedly installed on the threaded rod (16).

4. A monitoring device for maintaining a generator stator in a hydropower plant according to claim 1, characterized in that: The top of the column box (1) is fixedly connected to a fixed top plate (17), the bottom of the column box (1) is fixedly connected to a support plate (18), and a fixed bottom plate (19) of the same size as the fixed top plate (17) is provided below the support plate (18).

5. A monitoring device for maintaining a generator stator in a hydropower plant according to claim 4, characterized in that: The fixed bottom plate (19) is symmetrically fixedly connected with an adjusting screw rod (20), the adjusting screw rod (20) movably penetrates the supporting plate (18), and the adjusting screw rod (20) is symmetrically threadedly connected with an adjusting nut (21) on both sides of the corresponding supporting plate (18).

6. A monitoring device for maintaining a generator stator in a hydropower plant according to claim 4, characterized in that: The fixed top plate (17) and the fixed bottom plate (19) are both provided with fixing holes (22).

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