Construction device for floating structure of hydropower station and construction method thereof

Abstract

The application relates to the field of water and electricity station floating barrier construction, and particularly discloses a construction device for a water and electricity station floating barrier structure and a construction method thereof. Before water storage of a reservoir, anchor pier construction of the floating barrier is completed, a floating anchor chain and a mooring water drum are installed, after water storage of the reservoir, installation of a water surface structure of the floating barrier is carried out, and the installation of a floating barrel, a trash rack and a flexible nylon net is completed on the bank by using a lifting appliance, so that the underwater operation time is reduced. After the trash rack is launched into water, a water operation platform and a jet boat are used to realize connection between sections of the floating barrier and quick installation of the sections of the floating barrier and the mooring water drum, the water operation platform can also be used to realize later maintenance and replacement, underwater operation risks are avoided, and installation precision and installation efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of hydropower station buoy construction, specifically to a construction device and method for buoy structures in hydropower stations. Background Technology

[0002] A floating debris barrier is a device that blocks floating debris from accumulating in large quantities, creating a relatively closed and clean water intake area in front of the water intake hole, thus ensuring the normal operation of the generating unit. The debris barrier typically consists of a float, a debris screen, and a flexible nylon mesh.

[0003] In hydropower station structures, a floating debris barrier system is typically installed before the intake to ensure adequate flow conditions, reduce the impact of floating debris on the safe operation and normal power generation of the hydropower station, and improve its reliability. Traditional hydropower station construction using grid-type floating debris barriers relies heavily on underwater operations. Underwater assembly of pontoons, debris barriers, and flexible nylon nets requires divers, making it susceptible to currents and biological threats, resulting in high operational risks. Underwater operations are also time-consuming, inefficient, and subject to hydrological conditions, making it difficult to guarantee assembly precision. Furthermore, underwater operations require specialized diving equipment and personnel, and the overall cost is high due to the long construction period. Summary of the Invention

[0004] The purpose of this invention is to provide a construction device and construction method for a buoy structure in a hydropower station, thereby solving the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a construction device for a floating structure in a hydropower station, the floating structure including multiple debris-blocking components, the debris-blocking components including floats, debris-blocking grids and flexible nylon nets; Including lifting equipment and floating work platforms; The lifting equipment includes a lifting frame, upper lifting lugs, and lower lifting lugs; multiple upper and lower lifting lugs are provided and are respectively located on the upper and lower sides of the lifting frame; the lower lifting lugs are connected to the debris barrier, and the upper lifting lugs are connected to the crane, used to lift the debris barrier assembly to the water surface; The water-based work platform includes a concave platform, buoyancy cylinders, a gantry, and a hand-operated hoist. The buoyancy cylinders are located at the bottom of the concave platform, the gantry is located on the concave platform, and the hand-operated hoist is located on the crossbar of the gantry. The hand-operated hoist is connected to the debris barrier and drives the buoyancy cylinders to move on the water surface, so that multiple buoyancy cylinders are connected on the water surface to form a chain of buoyancy barriers.

[0006] A construction method for a construction device used in a hydropower station's buoy structure includes the following steps: Step S1: Design an arc-shaped interception surface before impounding water in the reservoir of the hydropower station, and set multiple floating anchor blocks at different points on the interception surface. The floating anchor blocks are equipped with mooring water drums via anchor chains. Step S2: After the reservoir is filled with water, the pontoons, debris barriers and flexible nylon nets are installed on the shore and lifted by the lifting lugs on the pontoons. Adjacent debris barrier components are connected to form a whole, while the first and last debris barrier components are not connected. Step S3: Use a crane to lift the upper lifting lug of the lifting device, move the debris barrier assembly to the water surface, and release the temporary fixing rope between the lower lifting lug of the lifting device and the float, so that the debris barrier assembly can be smoothly lowered into the water; Step S4: The water-based work platform is launched into the water. The water-based work platform is moved on the water surface by the speedboat and moved to the water area of ​​the debris barrier component. The mooring water drum is lifted out of the water surface by the hand chain hoist and connected to one end of the debris barrier grid in the debris barrier component. After the installation is completed, the hand chain hoist is released. Step S5: Repeat steps S3 and S4. After multiple debris-blocking components are launched into the water, they are connected end to end and positioned by multiple mooring water drums to form an overall debris-blocking chain.

[0007] Compared with the prior art, the present invention has the following advantages and beneficial effects: Before the reservoir is filled, the construction of the buoy anchors, installation of the buoy anchor chains and mooring drums are completed. After the reservoir is filled, the surface structure of the buoy is installed. The installation of the buoys, including the floats, debris screens, and flexible nylon nets, is completed on shore using lifting equipment, reducing underwater operation time. After the debris screen components are launched, a surface work platform, in conjunction with a speedboat, is used to connect the various sections of the buoy and quickly install each section of the buoy and the mooring drums. This allows for later maintenance and replacement via the surface work platform, avoiding underwater operation risks and improving installation accuracy and efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the pollution interception component.

[0009] Figure 2 This is a schematic diagram of the lifting device.

[0010] Figure 3 This is a schematic diagram of the structure of a waterborne operation platform.

[0011] Figure 4 This is a schematic diagram of the concave platform.

[0012] Figure 5 This is a schematic diagram showing the installation and connection of the floating anchor, mooring drum, and debris barrier assembly.

[0013] Figure 6 This is a schematic diagram of the construction status of this device.

[0014] The meanings of the labels in the diagram are as follows: Debris barrier assembly-1; pontoon-11; debris barrier grille-12; flexible nylon mesh-13; Lifting tool-2; Lifting frame-21; Upper lifting lug-22; Lower lifting lug-23; Concave platform-31; Buoyancy cylinder-32; Gantry-33; Hand chain hoist-34; Floating Anchor - 4; Mooring water drum-5. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, so as to provide a better understanding of the concept of the present invention, the technical problem solved, the technical features constituting the technical solution, and the technical effects brought about.

[0016] like Figures 1-6 As shown, a construction device for a floating structure in a hydropower station is provided. The floating structure includes multiple debris-blocking components 1, each of which includes a float 11, a debris-blocking grid 12, and a flexible nylon net 13. Includes spreader 2 and water work platform; The lifting device 2 includes a lifting frame 21, an upper lifting lug 22 and a lower lifting lug 23; multiple upper lifting lugs 22 and lower lifting lugs 23 are provided and are respectively set on the upper and lower sides of the lifting frame 21; the lower lifting lug 23 is connected to the debris barrier 12 and the upper lifting lug 22 is connected to the crane, which is used to lift the debris barrier assembly 1 to the water surface; The water-based work platform includes a concave platform 31, a buoyancy cylinder 32, a gantry 33, and a hand-operated hoist 34. The buoyancy cylinder 32 is located at the bottom of the concave platform 31, the gantry 33 is located on the concave platform 31, and the hand-operated hoist 34 is located on the crossbar of the gantry 33. The hand-operated hoist is connected to the debris barrier 12 and drives the floats 11 to move on the water surface, so that multiple floats 11 are connected on the water surface to form a floating chain.

[0017] When using this device, first install the debris barrier 12, then place the flexible nylon net 13 on the debris barrier 12, and set the float 11 as a buoyancy provider on top of the debris barrier 12 to complete the assembly of the entire debris barrier assembly 1. After installation, assemble the debris barrier assembly 1 onto the lifting device 2. Specifically, when in use, the lifting lugs on the float 11 are hoisted onto the lower lifting lug 23 of the lifting device 2. The above installation process is carried out on the shore. After installation, use a crane to hoist the entire lifting device 2 and debris barrier assembly 1 onto the water surface, and use the water operation platform 3 to move the debris barrier assembly 1 to complete the setting of the floating chain.

[0018] A construction method for a construction device used in a hydropower station's buoy structure includes the following steps: Step S1: Design an arc-shaped interception surface before impounding water in the reservoir of the hydropower station, and set multiple floating anchor blocks at different points on the interception surface. The floating anchor blocks are equipped with mooring water drums 5 via anchor chains. Step S2: After the reservoir is filled with water, the pontoon 11, the debris barrier 12 and the flexible nylon net 13 are installed on the shore and lifted by the lifting lugs on the pontoon 11. Adjacent debris barrier components 1 are connected to form a whole, while the first and last debris barrier components 1 are not connected. Step S3: The upper lifting lug 22 of the lifting device 2 is lifted by a crane, which moves the debris barrier assembly 1 to the water surface. The temporary fixing rope between the lower lifting lug 23 of the lifting device 2 and the float 11 is released, so that the debris barrier assembly 1 can be smoothly put into the water. Step S4: The water platform is launched into the water and moved on the water surface by the speedboat. It is moved to the launching area of ​​the debris barrier component 1. The mooring water drum 5 is lifted out of the water surface by the hand chain hoist 34 and connected to one end of the debris barrier grid 12 in the debris barrier component 1. After the installation is completed, the hand chain hoist 34 is released from the fixation. Step S5: Repeat steps S3 and S4. After multiple debris-blocking components 1 are launched into the water, they are connected end to end and positioned by multiple mooring water drums 5 to form an overall debris-blocking chain.

[0019] This invention proposes a construction method for a floating debris barrier device in a hydropower station. The core of this method lies in the rational arrangement of construction procedures. Before reservoir impoundment, the construction and installation of the floating debris barrier anchors and mooring drums are completed. After reservoir impoundment, the surface structure of the floating debris barrier is installed. The installation of components including pontoons, debris screens, and flexible nylon nets is completed on shore using lifting equipment, reducing underwater operation time. After the debris barrier components are launched, a surface work platform, in conjunction with a speedboat, enables the connection between different sections of the floating debris barrier and the rapid installation of each section and the mooring drums. The surface work platform also facilitates subsequent maintenance and replacement.

[0020] The construction process of this invention mainly includes the installation of floating anchor blocks and mooring drums before water impoundment. Mooring drums are floating mooring facilities installed in ports, bays, or river channels, consisting of three parts: pontoons, anchor chains, and anchors. After water impoundment, the debris-blocking components and lifting gear are installed, and the entire assembly is lifted into the water before being installed via a floating work platform. After the lifting gear is in place, the debris-blocking grid, flexible nylon net, and pontoons are installed sequentially. Bow-shaped shackles are used to connect and fix all adjacent pontoons in the same section, except for the first and last sections. After checking the installation's firmness and stability, the assembly is launched into the water. The floating work platform has a concave platform, and all pontoon connections are made within the platform, facilitating operation by personnel on both sides.

[0021] The present invention has a reasonable construction procedure arrangement: the construction of the buoy anchor piers, the installation of anchor chains and mooring water drums are completed before the reservoir is impounded, and the installation of the buoy surface structure is carried out after the reservoir is impounded.

[0022] Auxiliary tooling (lifting equipment) for assembling the anti-fouling float was developed. Using this specialized tooling, the entire anti-fouling float, including underwater components such as debris screens and flexible nylon nets, can be integrated and assembled on shore.

[0023] A U-shaped water surface operation platform was developed. By using the water surface operation platform in conjunction with the assault boat, the connection between the various sections of the buoy and the quick installation between the buoy and the mooring water drum can be realized to form an integrated buoy chain.

[0024] The newly developed U-shaped water surface operation platform enables rapid maintenance and replacement of mooring water drums.

[0025] The present invention has the following advantages: 1. Enhanced safety: Compared to traditional underwater operation methods, this invention eliminates the need for diving operations by using auxiliary tooling, thus reducing the risk of personnel injury or death; 2. Significantly Improved Efficiency: The construction process for the buoy was rationally arranged in conjunction with the water storage phase of the project, improving overall construction efficiency. This reduced the amount of work on the water surface and underwater, increased the assembly efficiency of the buoy, and shortened the overall construction cycle. 3. Construction quality is better guaranteed: Onshore assembly is not limited by hydrological conditions, can be carried out in all weather, has high assembly precision, and makes it easier to check the quality of key processes, making it easier to ensure quality. 4. Cost reduction: The pontoon structure is assembled on land, saving the cost of diving equipment and reducing costs compared to traditional underwater operations. 5. Environmental improvements: Reduce water surface disturbance and construction waste from water operations, protecting the reservoir area's ecology.

[0026] The terms "connection" and "fixing" appearing in the description of this invention can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this invention should be understood according to the specific circumstances.

[0027] In the description of this invention, the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., are used only to indicate the orientation or positional relationship for the convenience of describing this invention and to simplify the description, and do not indicate or imply a specific orientation that the device or element referred to must have, and therefore should not be construed as a limitation of this invention.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction method for a construction device for a hydropower station's floating structure, the floating structure comprising multiple debris-blocking components (1), each debris-blocking component (1) comprising a float (11), a debris-blocking grid (12), and a flexible nylon net (13); the construction device for the hydropower station's floating structure comprises a lifting device (2) and a floating operation platform; The lifting device (2) includes a lifting frame (21), an upper lifting lug (22) and a lower lifting lug (23); multiple upper lifting lugs (22) and lower lifting lugs (23) are provided and are respectively set on the upper and lower sides of the lifting frame (21); the lower lifting lug (23) is connected to the debris barrier (12) and the upper lifting lug (22) is connected to the crane, which is used to lift the debris barrier assembly (1) to the water surface; The water-based work platform includes a concave platform (31), a buoyancy cylinder (32), a gantry (33), and a hand-operated hoist (34); the buoyancy cylinder (32) is located at the bottom of the concave platform (31), the gantry (33) is located on the concave platform (31), and the hand-operated hoist (34) is located on the crossbar of the gantry (33). The hand-operated hoist is connected to the debris barrier (12) and drives the buoyancy cylinder (11) to move on the water surface, so that multiple buoyancy cylinders (11) are connected on the water surface to form a floating chain; its characteristic is: The construction method includes the following steps: Step S1: Before the reservoir of the hydropower station is impounded, an arc-shaped interception surface is designed, and multiple floating anchor blocks (4) are set at different points on the interception surface. The floating anchor blocks (4) are equipped with mooring water drums (5) through anchor chains. Step S2: After the reservoir is filled with water, the pontoons (11), the debris barrier (12) and the flexible nylon net (13) are installed on the shore and lifted by the lugs on the pontoons (11). The adjacent debris barrier components (1) are connected to form a whole, and the debris barrier components (1) at the beginning and end are not connected. Step S3: The upper lifting lug (22) of the lifting device (2) is lifted by a crane, which moves the debris barrier assembly (1) to the water surface. The temporary fixing rope between the lower lifting lug (23) of the lifting device (2) and the float (11) is released, so that the debris barrier assembly (1) can enter the water smoothly. Step S4: The water platform is put into the water and moved on the water surface by the speedboat. It is moved to the water area of ​​the debris barrier assembly (1). The mooring water drum (5) is lifted out of the water surface by the hand chain hoist (34) and connected to one end of the debris barrier grid (12) in the debris barrier assembly (1). After the installation is completed, the hand chain hoist (34) is released from the water. Step S5: Repeat steps S3 and S4. After multiple debris-blocking components (1) are launched into the water, they are connected end to end and positioned by multiple mooring water drums (5) to form an overall debris-blocking chain.

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