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

Abstract

The invention relates to the field of hydropower station buoy blocking construction, and particularly discloses a construction device for a hydropower station buoy blocking structure and a construction method of the construction device. Buoy blocking anchorage pier construction, buoy anchor chain installation and mooring water drum installation are completed before water storage of a reservoir, and a buoy blocking water surface structure is installed after water storage of the reservoir. The installation of the buoy, the trash holding grating and the flexible nylon net is completed ashore by utilizing the lifting appliance, so that the underwater operation time is shortened. After the trash holding assembly enters the water, the overwater operation platform is used for being matched with the assault boat, connection between all the sections of the trash holding buoy and rapid installation of all the sections of the trash holding buoy and the mooring water drum are achieved, later maintenance and replacement can be achieved through the overwater operation platform, the underwater operation risk is avoided, and the installation precision and the installation efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of hydropower station intercepting float construction, and in particular to a construction device and a construction method for a hydropower station intercepting float structure. Background Art

[0002] A buoy is a type of debris interceptor that blocks floating debris before it accumulates, creating a relatively closed and clean working area at the front of the water intake, thereby ensuring the normal operation of the unit. The debris interceptor is generally composed of a buoy, a debris screen, and a flexible nylon mesh.

[0003] In hydropower station structures, a buoy system is typically installed before the water inlet to maintain inflow conditions, reduce the impact of floating debris on the safe operation and normal power generation of the hydropower station, and improve operational reliability. Traditional hydropower station lattice-type buoy construction relies heavily on underwater operations. The underwater assembly of buoys, trash screens, and flexible nylon nets requires divers, which is susceptible to currents and biological threats and carries high operational risks. Underwater operations are time-consuming, inefficient, and difficult to guarantee due to hydrological constraints. Assembly precision is also difficult to guarantee. Underwater operations also require specialized diving equipment and personnel, resulting in a long construction period and high overall costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a construction device and a construction method for a buoyancy barrier structure of a hydropower station to solve the above-mentioned technical problems.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a construction device for a floating structure of a hydropower station, wherein the floating structure includes a plurality of pollution-blocking components, and the pollution-blocking components include a buoy, a pollution-blocking grid and a flexible nylon net; Including spreader and water working platform; The lifting device includes a lifting frame, an upper lifting lug, and a lower lifting lug; a plurality of upper lifting lugs and lower lifting lugs are provided, which are respectively arranged on the upper and lower sides of the lifting frame; the lower lifting lug is connected to the trash screen, and the upper lifting lug is connected to the crane, so as to lift the trash screen assembly to the water surface; The water working platform includes a concave platform, a buoyancy cylinder, a gantry and a hand winch; the buoyancy cylinder is arranged at the bottom of the concave platform, the gantry is arranged on the concave platform, the hand winch is arranged on the cross bar of the gantry, and the hand winch is connected to the trash screen to drive the float to move on the water surface, so that multiple floats are connected on the water surface to form a float chain.

[0006] A construction method for a construction device for a buoyancy barrier structure of a hydropower station, comprising the following steps: Step S1: Before the reservoir of the hydropower station is filled with water, a curved interception surface is designed, and a plurality of floating anchor piers are set at different points of the interception surface. The floating anchor piers are equipped with mooring drums through anchor chains; Step S2: After the reservoir is filled with water, the buoys, trash screens, and flexible nylon nets are installed on the shore and hoisted using the lifting lugs on the buoys. Adjacent trash screens are connected to form a whole, while the head and tail trash screens are not connected. Step S3: hoist the upper lifting lug of the spreader with a crane to move the trash intercepting assembly above the water surface, and release the temporary fixing rope between the lower lifting lug of the spreader and the buoy, so that the trash intercepting assembly can be smoothly put into the water; Step S4: The water working platform is put into the water and moved on the water surface by the assault boat to the launching area of ​​the trash blocking assembly. The mooring drum is lifted out of the water using a hand chain hoist and connected to one end of the trash screen in the trash blocking assembly. After the installation is completed, the hand chain hoist is released. Step S5, repeating the operations of step S3 and step S4, connecting the multiple pollution intercepting assemblies end to end in sequence after launching them into the water, and positioning them through multiple mooring water drums to form an integral intercepting buoy chain.

[0007] Compared with the prior art, the present invention has the following advantages and beneficial effects: Before the reservoir is filled with water, the construction of the intercepting float anchor piers, the installation of the float anchor chain and mooring drum are completed. After the reservoir is filled with water, the surface structure of the intercepting float is installed. The buoy, trash screen, and flexible nylon net are installed onshore using a sling, reducing the time of underwater operations. After the trash intercepting assembly is launched into the water, the water working platform is used in conjunction with the assault boat to connect the various sections of the intercepting float and quickly install the sections and mooring drum. This also allows the water working platform to be used for subsequent maintenance and replacement, avoiding the risks of underwater operations and improving installation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 Schematic diagram of the structure of the pollution-blocking component.

[0009] Figure 2 This is a structural diagram of the spreader.

[0010] Figure 3 This is a structural diagram of the water operation platform.

[0011] Figure 4 Schematic diagram of the structure of the concave platform.

[0012] Figure 5 This is a schematic diagram of the installation and connection of the floating anchor pier, mooring water drum and pollution prevention assembly.

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

[0014] The meanings of the numbers in the figure are: Trash retention assembly-1; float-11; trash retention grid-12; flexible nylon net-13; Lifting device-2; Lifting frame-21; Upper lifting lug-22; Lower lifting lug-23; Concave platform-31; buoyancy tube-32; gantry-33; hand chain hoist-34; Floating anchor pier-4; Mooring Drum-5. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0016] like Figures 1-6 As shown, a construction device for a floating structure of a hydropower station, the floating structure includes a plurality of pollution-blocking components 1, and the pollution-blocking components 1 include a buoy 11, a pollution-blocking grid 12 and a flexible nylon net 13; It includes a spreader 2 and a water working platform; The lifting device 2 includes a lifting frame 21, an upper lifting lug 22, and a lower lifting lug 23. There are multiple upper lifting lugs 22 and lower lifting lugs 23, which are respectively arranged on the upper and lower sides of the lifting frame 21. The lower lifting lug 23 is connected to the trash screen 12, and the upper lifting lug 22 is connected to the crane, so as to lift the trash assembly 1 to the water surface. The water working platform includes a concave platform 31, a buoyancy cylinder 32, a gantry 33 and a hand winch 34; the buoyancy cylinder 32 is arranged at the bottom of the concave platform 31, the gantry 33 is arranged on the concave platform 31, and the hand winch 34 is arranged on the cross bar of the gantry 33. The hand winch is connected to the trash screen 12 to drive the float 11 to move on the water surface, so that multiple floats 11 are connected on the water surface to form a buoy chain.

[0017] To use this device, first install the trash screen 12, place the flexible nylon mesh 13 on the trash screen 12, and place the buoyancy buoy 11 on top of the trash screen 12, completing the assembly of the entire trash assembly 1. After installation, the trash assembly 1 is assembled on the sling 2. Specifically, when in use, the lifting lugs on the buoy 11 are hoisted onto the lower lifting lugs 23 of the sling 2. This installation process is performed on the shore. After installation, a crane is used to lift the entire sling 2 and trash assembly 1 onto the water surface. The water work platform 3 is used to drive the trash assembly 1 to move, completing the installation of the buoy chain.

[0018] A construction method for a construction device for a buoyancy barrier structure of a hydropower station, comprising the following steps: Step S1, before the reservoir of the hydropower station is filled with water, a curved interception surface is designed, and a plurality of floating anchor piers are set at different points of the interception surface. The floating anchor piers are installed with mooring drums 5 through anchor chains; Step S2: After the reservoir is filled with water, the buoy 11, the trash screen 12 and the flexible nylon net 13 are installed on the shore and hoisted by the lifting lugs on the buoy 11. Adjacent trash screens 1 are connected to form a whole, while the first and last trash screens 1 are not connected. Step S3: Use a crane to lift the upper lifting lug 22 of the sling 2, drive the trash trap assembly 1 to move above the water surface, and release the temporary fixing rope between the lower lifting lug 23 of the sling 2 and the buoy 11, so that the trash trap assembly 1 is smoothly put into the water; Step S4: The water working platform is put into the water and moved on the water surface by the assault boat to the launching area of ​​the trash blocking assembly 1. The mooring drum 5 is lifted out of the water using the hand chain hoist 34 and connected to one end of the trash screen 12 in the trash blocking assembly 1. After the installation is completed, the hand chain hoist 34 is released. In step S5, the operations of step S3 and step S4 are repeated. After launching into the water, the multiple pollution intercepting assemblies 1 are connected end to end in sequence and positioned by multiple mooring drums 5 to form an integral intercepting buoy chain.

[0019] The present invention proposes a construction method for a hydropower station interceptor float. The core of the method is to rationally arrange the construction process. The interceptor float anchor pier construction, installation of the float anchor pier and mooring drum are completed before the reservoir is filled with water. After the reservoir is filled with water, the interceptor float surface structure is installed. The buoy, trash screen, and flexible nylon net are installed onshore using a sling, reducing the time required for underwater operations. After the trash interceptor assembly is launched into the water, an overwater work platform is used in conjunction with a assault boat to connect the various sections of the interceptor float and quickly install the sections and mooring drum. The overwater work platform also allows for subsequent maintenance and replacement.

[0020] The construction process of the present invention mainly includes the installation of floating anchor piers, floating anchor piers and mooring drums before water storage. The mooring drum is a floating mooring facility set up in ports, bays or river waters, and consists of three parts: a buoy, an anchor chain and an anchor. After water storage, the installation of the trash interception assembly and the sling is completed. After the entire assembly is hoisted and launched into the water, it is installed through an aquatic working platform. After the sling is placed, the trash screen, flexible nylon net and buoy are installed in sequence. Bow-shaped shackles are used to complete the connection and fixation of all adjacent buoys in the same section. The first part is not connected. After checking the firmness and stability of the installation, it is launched into the water. The aquatic working platform has a concave platform, and the connection of the buoys is carried out inside the platform, which is convenient for operators on both sides.

[0021] The invention arranges the construction process rationally: the construction of the intercepting float anchor pier, the installation of the anchor chain and the mooring water drum are completed before the reservoir is filled with water, and the installation of the intercepting float water surface structure is carried out after the reservoir is filled with water.

[0022] Auxiliary tooling (hoisting equipment) for assembling the intercepting float has been developed, and special auxiliary tooling is used to complete the integrated assembly of the entire intercepting float including underwater components such as the trash screen and flexible nylon net on shore.

[0023] An "A"-shaped surface operating platform was developed. The surface operating platform was used in conjunction with a speedboat to quickly connect the various sections of the intercepting float, as well as quickly install the intercepting float and the mooring water drum, forming an overall intercepting float chain.

[0024] The developed "concave" shaped water surface operation platform can be used to quickly carry out the later maintenance and replacement of the mooring water drum.

[0025] The present invention has the following advantages: 1. Improved safety: Compared with traditional underwater operation methods, this invention eliminates the need for diving operations and reduces the risk of casualties by adopting auxiliary tooling; 2. Significantly improved efficiency: In the early stage, the construction process of the buoy was rationally arranged in combination with the water storage nodes of the project, which improved the overall construction efficiency. The amount of surface and underwater operations was reduced, the assembly efficiency of the buoy was improved, and the overall construction period was shortened; 3. Construction quality is more guaranteed: Onshore assembly is not restricted by hydrological conditions and can be carried out around the clock. The assembly precision is high, and the quality inspection of key processes is more convenient, making quality easier to ensure. 4. Cost reduction: The buoy structure is assembled on shore, saving the cost of diving equipment and reducing costs compared to traditional underwater operations; 5. Improvement of environmental protection: Reduce water surface disturbance and construction waste caused by water operations, and protect the reservoir area ecology.

[0026] The terms "connection" and "fixation" appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0027] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction device for a floating structure for a hydropower station, the floating structure comprising a plurality of trash-blocking assemblies (1), the trash-blocking assemblies (1) comprising a buoy (11), a trash-blocking grille (12) and a flexible nylon net (13); characterized in that: It includes a sling (2) and an above-water operation platform; The lifting device (2) comprises a lifting frame (21), an upper lifting lug (22) and a lower lifting lug (23); a plurality of the upper lifting lugs (22) and the lower lifting lugs (23) are provided, and are respectively arranged on the upper and lower sides of the lifting frame (21); the lower lifting lug (23) is connected to the trash screen (12), and the upper lifting lug (22) is connected to the crane, and is used to lift the trash blocking assembly (1) to the water surface; The water operation platform comprises a concave platform (31), a buoyancy cylinder (32), a gantry (33) and a hand chain hoist (34); the buoyancy cylinder (32) is arranged at the bottom of the concave platform (31), the gantry (33) is arranged on the concave platform (31), the hand chain hoist (34) is arranged on the cross bar of the gantry (33), and the hand chain hoist is connected to the trash screen (12) to drive the buoy (11) to move on the water surface, so that multiple buoys (11) are connected on the water surface to form a buoyancy chain.

2. A construction method for a construction device for a hydropower station buoyancy structure according to claim 1, characterized in that: The following steps are involved: Step S1, before the reservoir of the hydropower station is filled with water, a curved interception surface is designed, a plurality of floating anchor piers (4) are set at different points of the interception surface, and the floating anchor piers (4) are installed with mooring drums (5) through anchor chains; Step S2: After the reservoir is filled with water, the buoy (11), the trash screen (12) and the flexible nylon net (13) are installed on the shore, and are lifted by the lifting lugs on the buoy (11). Adjacent trash blocks (1) are connected to form a whole, and the head and tail trash blocks (1) are not connected; Step S3, lifting the upper lifting lug (22) of the sling (2) by a crane, driving the trash-blocking assembly (1) to move above the water surface, releasing the temporary fixing rope between the lower lifting lug (23) of the sling (2) and the buoy (11), so that the trash-blocking assembly (1) enters the water smoothly; Step S4, the water operation platform is put into the water, and the water operation platform is driven by the assault boat to move on the water surface to the launching area of ​​the pollution blocking assembly (1), and the mooring drum (5) is lifted out of the water surface by using the hand chain hoist (34) and connected to one end of the pollution blocking grid (12) in the pollution blocking assembly (1). After the installation is completed, the fixing of the hand chain hoist (34) is released; Step S5, repeating the operations of step S3 and step S4, the multiple pollution intercepting assemblies (1) are connected end to end in sequence after launching, and are positioned by multiple mooring water drums (5) to form an integral intercepting buoy chain.

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