Maintenance device for water pump turbine of underground powerhouse of pumped storage power station

Abstract

The utility model discloses a maintenance device for a pump turbine of an underground powerhouse of a pumped storage power station, which comprises a trolley and a folding step mounted on the trolley, a fixed pile is mounted on the trolley, a winding box is mounted at the top end of the fixed pile, and the winding box mainly comprises a winding motor, a winding roller and a steel cable; the fixed end of the steel cable is connected with the winding roller, and the movable end is connected with the folding step. According to the device, the fixing piles serve as main supports of the bottom, meanwhile, the steel cables are used for being matched with the connecting blocks to conduct traction and pulling at the position where deformation of the folding step is not affected, and therefore the ultrahigh-strength supporting anti-overturning performance is achieved, and the stability and safety of the device in the using process can be guaranteed; a reinforcing ring and a reinforcing inclined supporting rod can be adopted for further reinforcing, and the self-supporting effect is guaranteed. Besides, a traction box and a material bracket can be additionally arranged to facilitate carrying of the maintenance and detection equipment, and the traction box is used for directly pulling the material bracket to move up and down at the top, so that the labor intensity of workers is reduced, and it is guaranteed that the workers have sufficient concentration on maintenance work.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of maintenance and maintenance, especially relates to a pump turbine maintenance device for underground powerhouse of pumped storage power station. BACKGROUND

[0002] The pump turbine is a new type of pumped storage unit that appeared in the 1930s. With its lighter weight and lower cost, it has been widely used in the energy field compared to the traditional water turbine and pump series energy storage unit. The pump turbine is mainly divided into mixed flow, inclined flow and tubular flow, which are suitable for different water head or lift range. The mixed flow and inclined flow pump turbine become the first choice for large and medium-sized pumped storage power stations due to their excellent performance. The tubular pump turbine is particularly suitable for tidal power stations due to its unique advantages.

[0003] In the Chinese patent "Water turbine unit maintenance device and water turbine unit maintenance platform" (Patent No. 202222805413X, announced on March 24, 2023), the water turbine unit maintenance device includes a trolley, an operating table with a combined clamp, which is suitable for quick and stable connection between the operating table and the large shaft, a telescopic folding step with a fixed end fixedly connected with the trolley, and a movable end of the telescopic folding step fixedly connected with the operating table. The telescopic folding step is suitable for lifting or lowering the operating table along the telescopic direction. The water turbine unit maintenance device provided by the utility model greatly reduces the difficulty of setting up the large shaft maintenance platform, significantly shortens the setting up and removing time, thereby reducing the unit standby time and improving the maintenance efficiency.

[0004] However, the device still has the following disadvantages: the folding step on the device as a working platform lacks effective support structure after fully extending, and the staff and maintenance detection equipment are prone to shaking during work, which has certain safety hazards. In addition, the carrying of the maintenance detection equipment still relies on manual operation, which not only increases the labor intensity, but also affects the convenience of maintenance work. SUMMARY

[0005] The utility model solves the technical problem to provide a pump turbine maintenance device for underground powerhouse of pumped storage power station with good safety, good stability and high work efficiency.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The maintenance device for the pump-turbine of the underground powerhouse of the pumped storage power station comprises a trolley and a folding step installed on the trolley, a fixing pile is installed on the trolley, a winding box is installed at the top end of the fixing pile, and the winding box mainly comprises a winding motor, a winding roller and a steel cable.

[0008] The movable end of the steel cable is connected to the folding step through a connecting block arranged on the side of the folding step.

[0009] The output end of the winding motor is fixedly installed on the winding roller, and the fixed end of the steel cable is fixedly installed on and wound around the winding roller.

[0010] A plurality of winding motors, winding rollers and steel cables are arranged in the winding box, and each steel cable is connected to the folding step through a connecting block.

[0011] A cleaning brush is installed on the inner wall of the winding box, and the bristles of the cleaning brush are in contact with the steel cable.

[0012] A reinforcing ring is installed on the outer side of the fixing pile, and the reinforcing ring is connected to the trolley through a reinforcing diagonal brace.

[0013] The bottom side of the reinforcing ring is fixedly connected to the upper end of the reinforcing diagonal brace, and the lower end of the reinforcing diagonal brace is installed on the trolley.

[0014] The above-mentioned maintenance device for the pump-turbine further comprises a traction box and a material bracket, the traction box is installed at the top end of the folding step, a traction cable extends out of the traction box, and the end of the traction cable is connected to the material bracket.

[0015] The traction end of the material bracket is arc-shaped, and a buffer pad is installed in the material bracket.

[0016] In view of the problems existing in the current maintenance device for the pump-turbine and its platform, the inventor designs a maintenance device for the pump-turbine of the underground powerhouse of the pumped storage power station, which comprises a trolley and a folding step installed on the trolley, a fixing pile is installed on the trolley, a winding box is installed at the top end of the fixing pile, and the winding box mainly comprises a winding motor, a winding roller and a steel cable; the fixed end of the steel cable is connected to the winding roller, and the movable end is connected to the folding step. The device uses the fixing pile as the support at the bottom, and uses the steel cable of the winding box in cooperation with the connecting block to pull and pull at the position without affecting the deformation of the folding step, so that the device has stable supporting force and can ensure the stability and safety of the device during use; the reinforcing ring and the reinforcing diagonal brace can be further reinforced to ensure the supporting effect of the device. In addition, in order to facilitate the user to carry the equipment, the traction box and the material bracket can be additionally arranged on the folding step, the traction box is directly used to pull the material bracket up and down on the top, so as to reduce the labor intensity of workers and ensure that the workers have sufficient physical strength for maintenance work. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a side view structural schematic diagram of the pump turbine maintenance device for the underground powerhouse of the pumped storage power station.

[0018] Fig. 2 It is a structure schematic diagram of the winding box in the pump turbine maintenance device for the underground powerhouse of the pumped storage power station, in which: a is an axial view of the winding roller, and b is a perpendicular axial view of the winding roller.

[0019] Fig. 3 It is a use state and structure schematic diagram of the traction box and the material bracket in the pump turbine maintenance device for the underground powerhouse of the pumped storage power station.

[0020] In the figure: 100, trolley; 101, folding steps; 200, fixed pile; 201, winding box; 202, steel cable; 203, connecting block; 204, winding motor; 205, winding roller; 206, cleaning brush; 207, reinforcing ring; 208, reinforcing inclined strut; 300, traction box; 301, traction cable; 302, material bracket; 303, buffer pad. DETAILED DESCRIPTION

[0021] As Figs. 1 to 3 shown in the figure, the pump turbine maintenance device for the underground powerhouse of the pumped storage power station comprises a trolley 100 and a folding step 101 installed on the trolley, and further comprises a traction box 300 and a material bracket 302.

[0022] The trolley is provided with a fixed pile 200, and the top end of the fixed pile is provided with a winding box 201. The winding box mainly comprises a winding motor 204, a winding roller 205 and a steel cable 202. The fixed end of the steel cable is connected to the winding roller, and the movable end is connected to the folding step.

[0023] The outer side of the fixed pile is provided with a reinforcing ring 207, and the bottom side of the reinforcing ring is fixedly connected to the upper end of a reinforcing inclined strut 208. The lower end of the reinforcing inclined strut is installed on the trolley.

[0024] The winding box is provided with a plurality of winding motors, winding rollers and steel cables. The output end of the winding motor is fixedly installed on the winding roller, and the fixed end of the steel cable is fixedly wound on the winding roller. The movable end of each steel cable is connected to the folding step through a corresponding connecting block 203 arranged on the side surface of the folding step. The connecting block is arranged at a position that does not affect the deformation of the folding step. In order to realize balanced and stable deformation of the folding step, the connecting blocks are evenly distributed on the two side surfaces of the folding step and connected to the steel cables. The inner wall of the winding box is provided with a cleaning brush 206, and the bristles of the cleaning brush are in contact with the steel cable.

[0025] The unfolding and winding box of the folding steps is synchronous with the release of the steel cable, the winding motor inside the winding box is started, the output end of the winding motor drives the winding roller to rotate, the winding roller releases the steel cable wound thereon, and the steel cable can move with the folding steps. At the same time, the cleaning brush removes the debris attached to the steel cable outside, so as to avoid damaging the steel cable after winding. The steel cable is connected to the position which does not affect the deformation of the folding steps for traction, provides stable support force, ensures the stability and safety of the device during use, and the fixed pile is reinforced by the reinforcing ring and the reinforcing inclined strut to ensure the supporting effect of itself.

[0026] The traction box is installed at the top end of the folding steps, the traction cable extends out of the traction box, and the end of the traction cable is connected to the material carrier for transportation and maintenance equipment. The traction end of the material carrier is arc-shaped, which can facilitate movement on the folding steps, and the material carrier is internally provided with a buffer pad 303 to reduce the influence of bumps on the device. The traction box and the traction cable cooperate to move the material carrier.

Claims

1. A device for maintenance of a pump-turbine of a pumped storage power plant underground powerhouse, comprising a trolley and a folding staircase mounted thereon, characterized in that: The trolley is provided with a fixed pile, the top end of the fixed pile is provided with a winding box, and the winding box mainly comprises a winding motor, a winding roller and a steel cable.

2. The pump-turbine maintenance device of claim 1, wherein: The movable end of the steel cable is connected to the folding steps through a connecting block arranged on the side surface of the folding steps.

3. The pump-turbine maintenance device of claim 2, wherein: The output end of the winding motor is fixedly provided with the winding roller, and the fixed end of the steel cable is fixedly wound on the winding roller.

4. The pump-turbine maintenance device of claim 3, wherein: The winding box is provided with a plurality of winding motors, winding rollers and steel cables, and each steel cable is connected to the folding steps through a connecting block.

5. The pump-turbine maintenance device of claim 4, wherein: A cleaning brush is arranged on the inner wall of the winding box, and the bristles of the cleaning brush are in contact with the steel cable.

6. The pump-turbine maintenance device of claim 1, wherein: A reinforcing ring is arranged on the outer side of the fixed pile, and the reinforcing ring is connected to the trolley through a reinforcing inclined support rod.

7. The pump-turbine maintenance device of claim 6, wherein: The bottom side of the reinforcing ring is fixedly connected to the upper end of the reinforcing inclined support rod, and the lower end of the reinforcing inclined support rod is arranged on the trolley.

8. The pump-turbine maintenance device of claim 1, wherein The trolley further comprises a traction box and a material bracket, the traction box is arranged at the top end of the folding steps, a traction cable is extended into the traction box, and the end of the traction cable is connected to the material bracket.

9. The pump-turbine maintenance device of claim 8, wherein: The traction end of the material bracket is arc-shaped, and a buffer pad is arranged in the material bracket.

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