A high safety factor maintenance platform for hydropower station generator sets

Abstract

The present invention provides a high-safety maintenance platform for a hydropower station generator set, comprising a lower platform, a bracket, and an upper platform arranged in sequence from bottom to top, wherein the bracket is provided with a hollow passage inside, wherein a car that moves up and down along the bracket is provided inside the passage, and a movable mobile platform is provided around the outside of the bracket, wherein the mobile platform is fixedly connected to the car and moves up and down along the bracket, wherein a vertical opening is provided on one side of the bracket, and the side of the car corresponding to the opening is connected to the surface of the mobile platform. The present invention has three load-bearing platforms, thereby providing a large and stable aerial platform, and can cover all vertical directions of the internal space of the generator set, allowing workers to stand on three different platforms to perform various tasks such as installation, disassembly, and maintenance, etc., with higher construction stability and safety factor, and can also carry large-scale work equipment, which is conducive to efficient completion of maintenance and repairs.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance equipment for hydropower stations, and in particular to a high-safety factor maintenance platform for generator sets in hydropower stations. Background Art

[0002] Electricity systems are an indispensable source of energy for people's lives and production in modern society, and hydropower is a pioneer in the electric power industry. Hydropower is a crucial component of my country's power engineering. my country's rivers and lakes are widely distributed, with vast elevation differences, and possess abundant resources. Hydropower projects are gaining increasing attention due to its clean, efficient, and stable energy supply.

[0003] A hydropower station, comprised of hydraulic systems, mechanical systems, and power generation equipment, is a key water conservancy project that converts water energy into electricity. Sustainability in electricity production requires uninterrupted hydropower utilization. The construction of a hydropower station's reservoir system artificially regulates and alters the temporal and spatial distribution of water resources, achieving sustainable utilization. To effectively convert reservoir water energy into electricity, a hydropower station requires a hydro-mechanical system consisting primarily of a penstock, turbines, generators, and tailwater pipes.

[0004] The turbine is a key component of a hydroelectric generator set, converting the kinetic energy of the water flow into its own rotation, thereby driving the generator. When a turbine malfunctions and requires repair, or for routine maintenance, the turbine must be hoisted and the turbine body and the channel in which it is installed manually inspected. Because the turbine is installed in a vertical space with the water outlet directly below, there is no standing space. Traditionally, maintenance personnel have erected scaffolding at the edge, using it to work. However, this type of scaffolding lacks support at the bottom and is secured only by the sides. This makes it complex to construct, has a low safety factor, and is difficult to accommodate large equipment. Therefore, a better maintenance device is needed. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-safety factor maintenance platform for a generator set in a hydropower station, which solves the problem in the prior art that it is difficult to maintain a turbine.

[0006] According to an embodiment of the present invention, a high-safety factor maintenance platform for a hydropower station generator set includes a lower platform, a bracket and an upper platform arranged in sequence from bottom to top, a hollow channel is provided inside the bracket, a car that moves up and down along the bracket is provided inside the channel, a movable mobile platform is provided around the outside of the bracket, the mobile platform is fixedly connected to the car and moves up and down along the bracket, a vertical opening is provided on one side of the bracket, the length of the opening matches the height of the bracket, and the side of the car corresponding to the opening is connected to the surface of the mobile platform.

[0007] The technical principle of the present invention is as follows: it includes three load-bearing platforms, wherein the upper platform is fixedly connected to the flange surface of the seat ring installed on the generator set, so as to carry out maintenance on the inside of the seat ring; the lower platform is fixedly connected to the tailwater pipe cone section of the generator set, so as to meet the installation, removal and maintenance of the runner room; the mobile platform and the car are supported by the bracket, so that the staff can move freely in the vertical direction to carry out construction on various other equipment installed on the vertical surface, and reduce the difficulty of observing the construction status.

[0008] Furthermore, an annular track is provided on the outer edge of the bottom surface of the upper platform, a sling is installed on the annular track, and an openable and closable movable panel is provided on the surface of the upper platform corresponding to the annular track.

[0009] Furthermore, the lower platform includes a bottom plate, a panel, and a support frame arranged between the bottom plate and the panel, and the support frame is a staggered steel structure.

[0010] Furthermore, the bracket is a regular polygon frame structure, and the bracket includes a plurality of support columns arranged along the end points of the regular polygon.

[0011] Furthermore, a power platform is provided on the top of the bracket, a motor is provided on the power platform, the motor drives a bobbin connected to the mobile platform through a traction rope.

[0012] Furthermore, the mobile platform is an annular plate structure, the inner side of the mobile platform is in close contact with the side surface of the bracket, and the projection of the mobile platform on the horizontal plane does not exceed the range of the upper platform and the lower platform.

[0013] Furthermore, the mobile platform includes a radial support and a multi-layer annular pad laid on the support, and the annular pad is a detachable structure.

[0014] Furthermore, a locking device is provided on the inner edge of the mobile platform, and the locking device includes a clamping head and a controller. The clamping head is an L-shaped structure, one end of which is rotatably mounted on the mobile platform, and the other end is rotatably set toward the bracket. The controller controls the rotation and stop of the clamping head; a baffle corresponding to the clamping head is also provided on the side of the bracket, and the baffle is horizontally arranged, and multiple baffles are arranged in sequence in the vertical direction at equal intervals.

[0015] Furthermore, a hook is provided at the end of the traction rope, and a connecting hole is provided at a position corresponding to the hook on the inner upper surface of the mobile platform, and the hook is detachably connected to the connecting hole.

[0016] Furthermore, a safety ladder is provided on one side of the bracket, and the safety ladder is connected from the lower platform to the power platform.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention has three load-bearing platforms, thus providing a large and stable aerial platform that can cover all vertical directions of the internal space of the generator set. Workers can stand on three different platforms to carry out various tasks such as installation, disassembly and maintenance. It has higher construction stability and safety factor, can also carry large work equipment, and is conducive to efficient maintenance and repair.

[0019] 2. The mobile platform of the present invention can move up and down along the bracket, so that the height can be adjusted at any time according to needs. It can cover all positions on the side of the entire turbine installation space, making maintenance work more convenient;

[0020] 3. The present invention is also provided with a car located inside the bracket, wherein the car moves with the mobile platform. When the height of the mobile platform needs to be adjusted, the staff is allowed to enter the car and leave the car after the adjustment is completed and the mobile platform is stable. This is safer and there will be no danger of people falling from a high altitude due to the shaking of the mobile platform.

[0021] 4. In the present invention, a locking device and a baffle are respectively provided between the mobile platform and the bracket. Through the cooperation of the locking device and the baffle, the mobile platform can be fixed relative to the bracket when it does not need to move, thereby enhancing the stability and safety factor of the mobile platform;

[0022] 5. In the present invention, a circular track and a sling installed on the circular track are also provided at the bottom of the upper platform. The equipment or raw materials can be transported from the top to the bottom through the sling, thereby providing a convenient logistics channel for the staff on the mobile platform or the lower platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the partial structure of an embodiment of the present invention excluding the upper platform.

[0025] Figure 3 It is a side schematic diagram of an embodiment of the present invention.

[0026] Figure 4for Figure 1 Enlarged schematic diagram of part A.

[0027] Figure 5 for Figure 2 Schematic diagram of the enlarged portion B.

[0028] In the figure: 1. Upper platform; 2. Lower platform; 3. Mobile platform; 4. Bracket; 5. Car; 6. Power platform; 7. Locking device; 11. Movable plate; 12. Annular track; 21. Bottom plate; 22. Panel; 23. Support frame; 31. Inner annular pad; 32. Outer annular pad; 33. Connecting hole; 41. Safety ladder; 42. Baffle; 51. Hatch door; 61. Motor; 62. Traction rope; 63. Hook; 71. Clamp; 72. Controller. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1 As shown, an embodiment of the present invention provides a high-safety maintenance platform for hydropower station generator sets, comprising, arranged from bottom to top, a lower platform 2, a bracket 4, and an upper platform 1. The upper platform 1 is fixedly connected to the flange surface of the seat ring installed on the generator set, allowing maintenance inside the seat ring; the lower platform 2 is fixedly connected to the draft tube cone section of the generator set, facilitating installation, removal, and maintenance of the runner chamber; and the bracket 4 supports the mobile platform 3 and car 5, allowing workers to move freely in the vertical direction.

[0031] In this embodiment, a circular track 12 is provided on the outer edge of the bottom surface of the upper platform 1, and a sling (not shown) is installed on the circular track 12. An openable and closable movable panel 11 is provided on the surface of the upper platform 1 corresponding to the circular track 12. The movable panel 11 is closed during construction on the upper platform 1 to avoid safety accidents. When work on the upper platform 1 is completed and materials need to be transported through the upper platform 1, the movable panel 11 is opened to operate the sling. In this embodiment, the load capacity of the circular track 12 is no less than 6 tons, and four electric hoists with a load capacity of 1.5 tons or more are installed as slings to facilitate the transportation of equipment, materials, and waste.

[0032] like Figure 2As shown, the lower platform 2 includes a base plate 21, a panel 22, and a support frame 23 disposed between the base plate 21 and the panel 22. The support frame 23 is a staggered steel structure. The three components are assembled into a chassis-like structure with high strength and load-bearing capacity and low deadweight. The support frame 23 includes multiple mutually perpendicular main steel bars and a number of staggered reinforcement structures, which make the connection between the base plate 21 and the panel 22 more stable and tight, and less prone to breakage and bending. In this embodiment, the lower platform 2 meets the total mass requirement of no less than 30 construction workers, the work equipment they carry, materials, and demolished objects.

[0033] like Figure 3 As shown, in this embodiment, the bracket 4 is a regular polygonal frame structure, comprising a plurality of support columns arranged along the endpoints of the regular polygon. Preferably, in this embodiment, the bracket 4 is a square frame structure, comprising four support columns, each arranged at the end of the square. Reinforcing ribs are provided between adjacent support columns to form a multi-point connected frame, thereby enhancing the overall structural strength.

[0034] A hollow passage is provided inside the bracket 4, and a car 5 is provided inside the passage that moves up and down along the bracket 4. A movable mobile platform 3 is provided around the outside of the bracket 4. The mobile platform 3 is fixedly connected to the car 5 and moves up and down along the bracket 4 at the same time. A vertical opening is provided on one side of the bracket 4, and the length of the opening matches the height of the bracket 4. The side of the car 5 corresponding to the opening is connected to the surface of the mobile platform 3. In this embodiment, preferably, a hatch 51 that can be opened and closed is also provided on the side corresponding to the opening of the car 5 to prevent the passengers inside from accidentally sliding out of the car 5, thereby further improving the safety factor. It should be noted that the mobile platform 3 in this embodiment is an annular plate structure, the inner side of the mobile platform 3 is close to the side of the bracket 4, and the projection of the mobile platform 3 on the horizontal plane does not exceed the range of the upper platform 1 and the lower platform 2.

[0035] In the present invention, the mobile platform 3 includes radial supports 4 and a multi-layered annular padding plate laid on the supports 4. The annular padding plate is a removable structure. In this embodiment, the structure includes a two-layer structure comprising an inner annular padding plate 31 and an outer annular padding plate 32. The outer annular padding plate 32 is a removable structure. After removal, the total area of ​​the annular padding plate is reduced, allowing the mobile platform 3 to pass through certain areas with protrusions and perform construction on them. In this embodiment, the load-bearing capacity of the inner annular padding plate 31 is preferably no less than 7 tons, and the load-bearing capacity of the inner annular padding plate 32 is preferably no less than 3 tons, so as to meet the total mass requirement of at least 20 workers and corresponding equipment.

[0036] When the mobile platform 3 is fixed at a certain height, the staff enters the car 5 and moves to the same height, then opens the hatch 51 and enters the surface of the mobile platform 3 to start work; when the height of the mobile platform 3 needs to be adjusted, the staff first enters the car 5 and closes the hatch 51, then moves the mobile platform 3 and the car 5 up and down, and after they are fixed again, they can move from the car 5 to the mobile platform 3. In this way, there are no staff on the surface of the mobile platform 3 when it is moving, which is less likely to cause the danger of falling from a height. At the same time, the staff do not completely leave the equipment and can quickly move to the surface of the mobile platform 3 after the mobile platform 3 is fixed to continue working, which is more efficient.

[0037] In the present invention, because the mobile platform 3 and car 5 are integrated, with the car 5 located inside the support frame 4 and the mobile platform 3 outside, only the mobile platform 3 or the car 5 needs to be driven independently to move both simultaneously. It should be noted that the car 5 and mobile platform 3 can be connected using a fixed structure such as a steel frame, and the side of the support frame 4 corresponding to the connection surface is not provided with reinforcing ribs to avoid hindering the movement of the car 5 and mobile platform 3. While inside the car 5, workers do not need to drive the car 5 to move; they can simply follow the mobile platform 3 to the desired height.

[0038] like Figure 5 As shown, in a further embodiment of the present invention, a power platform 6 is installed on top of the bracket 4. Since the bracket 4 in this embodiment is a square frame, the power platform 6 is equipped with motors 61 at each of the four corners of the bracket 4. These motors 61 drive connecting spools, which are connected to the mobile platform 3 via traction ropes 62. When the motor 61 is in operation, the traction ropes 62 are wound around the spools, pulling the mobile platform 3 upward. When the motor 61 rotates in the opposite direction, releasing the spools, the mobile platform 3 descends under the action of gravity. Because the mobile platform 3 and the car 5 are integrally structured, the movement of the mobile platform 3 driven by the motor 61 also drives the movement of the car 5. Furthermore, a hook 63 is provided at the end of the traction rope 62. A connecting hole 33 is provided on the inner upper surface of the mobile platform 3 at a position corresponding to the hook 63. The hook 63 is detachably connected to the connecting hole 33. This allows the hook 63 to be separated from the connecting hole 33, making it easier to maintain the motor 61, the spool, or the mobile platform 3 separately.

[0039] Preferably, a safety ladder 41 is provided on one side of the bracket 4, and the safety ladder 41 is connected from the lower platform 2 to the power platform 6. This allows the user to directly enter the power platform 6 to install and maintain equipment such as the motor 61 or the bobbin.

[0040] like Figure 4As shown, because the mobile platform 3 and the car 5 are suspended from the support 4 via a traction rope 62, they may experience some wobbling. Therefore, in this embodiment, a locking device 7 is further provided on the inner edge of the mobile platform 3. The locking device 7 includes a clamp 71 and a controller 72. The clamp 71 is an L-shaped structure, with one end pivotally mounted on the mobile platform 3 and the other end pivotally disposed toward the support 4. The controller 72 controls the rotation and stopping of the clamp 71. In this embodiment, a drive motor 61 serves as the controller 72. The side of the support 4 is also provided with a baffle 42 corresponding to the clamp 71. The baffle 42 is horizontally disposed, and multiple baffles 42 are arranged in a vertical sequence with equal spacing. In this embodiment, the controller 72 is an electrically controlled telescopic rod, one end of which is fixed to the mobile platform 3 and the other end is connected to the clamp 71. When the telescopic rod is extended, it pushes the clamp 71 to rotate toward the side of the support 4 and eventually locks onto the baffle 42. In this way, the clamp 71 and the baffle 42 secure the mobile platform 3 to the support 4, improving the stability of the mobile platform 3. When the mobile platform 3 needs to be moved, the telescopic rod is controlled to retract, and the clamping head 71 is driven to rotate away from the bracket 4 .

[0041] It should be noted that, in this embodiment, all load-bearing structures adopt a safety factor of 6 times.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high safety factor maintenance platform for hydropower station generator sets, characterized by: The invention comprises a lower platform, a bracket and an upper platform arranged in sequence from bottom to top, wherein a hollow passage is provided inside the bracket, and a car is provided inside the passage and moves up and down along the bracket. A movable mobile platform is provided around the outside of the bracket, and the mobile platform is fixedly connected to the car and moves up and down along the bracket. A vertical opening is provided on one side of the bracket, and the length of the opening matches the height of the bracket. The side of the car corresponding to the opening is connected to the surface of the mobile platform; A locking device is also provided on the inner edge of the mobile platform, and the locking device includes a clamping head and a controller. The clamping head is an L-shaped structure, one end of which is rotatably mounted on the mobile platform, and the other end is rotatably arranged toward the bracket. The controller controls the rotation and stop of the clamping head; a baffle corresponding to the clamping head is also provided on the side of the bracket. The baffle is horizontally arranged, and multiple baffles are arranged in sequence in the vertical direction with equal spacing; A power platform is provided on the top of the bracket, a motor is provided on the power platform, the motor is driven and connected to a bobbin, and the bobbin is connected to the mobile platform through a traction rope.

2. A high safety factor maintenance platform for a hydropower station generator set according to claim 1, characterized in that: An annular track is provided on the outer edge of the bottom surface of the upper platform, a sling is installed on the annular track, and an openable and closable movable plate is provided on the surface of the upper platform corresponding to the annular track.

3. The high safety factor maintenance platform for a hydropower station generator set according to claim 1, characterized in that: The lower platform includes a bottom plate, a panel and a support frame arranged between the bottom plate and the panel, and the support frame is a staggered steel structure.

4. The high safety factor maintenance platform for a hydropower station generator set according to claim 1, characterized in that: The bracket is a regular polygon frame structure, and the bracket includes a plurality of support columns arranged along the end points of the regular polygon.

5. The high safety factor maintenance platform for a hydropower station generator set according to claim 1, characterized in that: The movable platform is an annular plate structure, the inner side of the movable platform is in close contact with the side surface of the bracket, and the projection of the movable platform on the horizontal plane does not exceed the range of the upper platform and the lower platform.

6. A high safety factor maintenance platform for a hydropower station generator set according to claim 5, characterized in that: The mobile platform includes a radial support and a multi-layer annular pad laid on the support, and the annular pad is a detachable structure.

7. The high safety factor maintenance platform for a hydropower station generator set according to claim 1, characterized in that: The end of the traction rope is provided with a hook, and the position of the inner upper surface of the mobile platform corresponding to the hook is provided with a connecting hole, and the hook is detachably connected to the connecting hole.

8. The high safety factor maintenance platform for a hydropower station generator set according to claim 1, characterized in that: A safety ladder is provided on one side of the bracket, and the safety ladder is connected from the lower platform to the power platform.

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