Hydropower station bridge portal crane grabbing beam cable joint and method

Abstract

The invention relates to the technical field of hydropower stations, and particularly discloses a hydropower station bridge portal crane grabbing beam cable joint and a method, the hydropower station bridge portal crane grabbing beam cable joint comprises a male head element, the male head element is installed on a grabbing beam cable junction box, and the male head element comprises a pin body; the female head element and the grabbing beam cable are manufactured together, and a contact pin suite is arranged in the female head element; wherein the male head element and the female head element are connected through the contact pin body and the contact pin suite, an end face sealing and axial sealing structure is arranged between the male head element and the female head element, and the design of combining the end face sealing and the axial sealing is adopted, that is, a plurality of layers of sealing rings are arranged between the male head element and the female head element. And the waterproof capability of the whole joint is greatly improved. The filling cavity of the male head element and the cavity of the female head element are filled with chloroprene rubber vulcanized materials, the sealing effect is further enhanced, and it is ensured that the leakage phenomenon cannot occur even under the impact of high-pressure water flow.

Description

Technical Field

[0001] This invention relates to the field of hydropower station technology, and in particular to a cable connector and method for grabbing the beam of a gantry crane in a hydropower station. Background Technology

[0002] In the current maintenance and operation of hydropower stations, the gantry crane, as one of the key pieces of equipment, is crucial for ensuring the safety and efficiency of the hydropower station. The gantry crane's grab beam, as the core component for lifting and lowering the sluice gate, requires a reliable and safe electrical system during underwater operations. However, the existing gantry crane grab beam cable joint structure is relatively simple and lacks waterproofing, especially during underwater operations after disassembly and reassembly, where river water frequently seeps into the cable joint. This not only causes short circuits in the grab beam's electrical circuit but may also burn out some electrical components, seriously affecting related operations and posing a significant safety hazard to underwater gantry crane grab beam operations.

[0003] Specifically, existing grab beam cable joints mainly rely on end-face sealing designs to prevent water intrusion, but this design often cannot meet the needs of long-term underwater operations in practical applications. Due to the harsh working environment and frequent exposure to high-pressure water flow, traditional end-face sealing methods are difficult to provide sufficient water-stopping effect, thus affecting the stability and durability of the entire system. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the working environment is harsh and the system needs to be frequently subjected to the impact of high-pressure water flow. Traditional end-face sealing methods are difficult to provide sufficient water-stopping effect, which in turn affects the stability and durability of the entire system.

[0005] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a cable connector for a gantry crane in a hydropower station, which includes a male connector, which is installed on the cable junction box of the gantry crane and includes a pin body; and a female connector, which is manufactured together with the gantry crane cable and has a pin assembly inside; wherein the male connector and the female connector are connected by the pin body and the pin assembly, and the male connector and the female connector are provided with an end face seal and an axial seal structure.

[0006] In a preferred embodiment of the hydropower station bridge gantry crane cable joint of the present invention: the male connector includes a filling cavity, the filling cavity is disposed inside the housing, and the side wall of the housing is provided with a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring, wherein the filling material of the filling cavity is made of chloroprene rubber vulcanized, which is used to fix the pin body and fill the cavity.

[0007] In a preferred embodiment of the hydropower station bridge gantry crane grab beam cable joint of the present invention: the first sealing ring and the second sealing ring on the two end faces and the third sealing ring and the fourth sealing ring on the two axial sides are fixed to the grab beam cable junction box by bolts to form a sealing system.

[0008] In a preferred embodiment of the hydropower station bridge gantry crane cable joint of the present invention: the female connector further includes a cavity disposed inside the housing, and the side wall of the housing is provided with a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring, wherein the cavity filler is made of chloroprene rubber vulcanized, used to fix the pin assembly and fill the cavity.

[0009] In a preferred embodiment of the hydropower station bridge gantry crane cable joint of the present invention: the first sealing ring and the second sealing ring on the two end faces and the third sealing ring and the fourth sealing ring on the two axial sides are locked together by a lock nut to enhance the sealing effect.

[0010] In a preferred embodiment of the hydropower station bridge gantry crane cable joint of the present invention: the female connector further includes an intermediate component disposed at the end of the outer shell, the intermediate component is connected to the outer shell to form a sealed cavity, and a tail component is installed at the end of the intermediate component, the outer shell, the intermediate component and the tail component form a whole.

[0011] In a preferred embodiment of the hydropower station bridge gantry crane cable joint of the present invention: after the intermediate part is connected to the outer shell, it is fixed by a fixing nut.

[0012] In a preferred embodiment of the hydropower station bridge gantry crane grabbing beam cable joint of the present invention: the tail component is used to firmly fix the grabbing beam cable to the intermediate component, so that the outer shell and the intermediate component form a whole.

[0013] In a preferred embodiment of the hydropower station bridge gantry crane grabbing beam cable joint of the present invention: the tail component is filled with epoxy resin to ensure the sealing between the grabbing beam cable and the outer shell, intermediate component and tail component.

[0014] In a preferred embodiment of the bridge gantry crane grab beam cable connector method of the present invention: male and female connectors are fabricated, and pins and pin kits are respectively provided inside them; the pins and pin kits are vulcanized and fixed using neoprene rubber and the cavity is filled; corresponding sealing rings and sealing rings are installed on the male and female connectors; the male connector is installed on the grab beam cable junction box and fixed with bolts; the female connector is connected to the grab beam cable and locked with a lock nut; the intermediate part is connected to the outer shell and fixed with a lock nut; the intermediate part is filled with epoxy resin; the tail part is installed and the grab beam cable is firmly fixed.

[0015] The beneficial effects of this invention are as follows: By employing a design that combines end-face sealing and axial sealing, i.e., setting multiple sealing rings between the male and female components (such as the first and second sealing rings for end-face sealing, and the third and fourth sealing rings for axial sealing), the waterproof capability of the entire connector is greatly improved. Using neoprene rubber vulcanized material to fill the filling cavity of the male component and the cavity of the female component further enhances the sealing effect, ensuring that no leakage occurs even under high-pressure water flow impact.

[0016] The novel sealing structure design not only solves the water-stopping problem of traditional end-face sealing methods under high-pressure water flow impact, but also ensures the safety and reliability of electrical connections, avoiding short circuits and damage to electrical components caused by water intrusion. The overall structure is robust, and the connections between components are tight, ensuring the system's stability and durability during long-term use, reducing maintenance frequency and costs. The manufacturing process of this invention is relatively simple and easy to implement, and the rational design of each component facilitates quick installation and disassembly, improving work efficiency.

[0017] The male and female connectors are easy to connect, while ensuring good sealing and electrical connection performance, which helps to complete the corresponding work tasks in a timely manner and improves the overall work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0019] Figure 1 A schematic diagram of the male end of the grabbing cable of the grabbing beam cable joint of the bridge gantry crane in a hydropower station is shown;

[0020] Figure 2 A schematic diagram of the female end of the grabbing cable of the grabbing beam cable joint of the bridge gantry crane in a hydropower station is shown;

[0021] Figure 3 This diagram shows a front view of the pin structure of the grab beam cable joint of the gantry crane in a hydropower station. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0024] Reference Figures 1-3 This embodiment provides a cable connector for a gantry crane grabbing beam in a hydropower station, including...

[0025] Male connector 1 is mounted on the grab beam cable junction box and includes a pin body 11; female connector 2 is fabricated together with the grab beam cable and has a pin assembly 21 inside.

[0026] The male connector 1 and the female connector 2 are connected by the pin body 11 and the pin kit 21, and the male connector 1 and the female connector 2 are provided with end face sealing and axial sealing structures.

[0027] Reference Figure 1 As an optional embodiment, the male connector 1 includes a filling cavity 12, which is disposed inside the housing 13. The side wall of the housing 13 is provided with a first sealing ring 14, a second sealing ring 15, a third sealing ring 16, and a fourth sealing ring 17. The filling material of the filling cavity 12 is made of chloroprene rubber vulcanized, which is used to fix the pin body 11 and fill the cavity, and at the same time to ensure sealing.

[0028] The two end face first sealing rings 14 and second sealing rings 15 and the two axial third sealing rings 16 and fourth sealing rings 17 are fixed to the grab beam cable junction box by bolts 18 to form a sealing system.

[0029] The filling cavity 12 is filled with neoprene vulcanized material to fix the pin body 11 and fill the entire cavity to enhance structural stability. The sidewalls of the housing 13 are provided with a first sealing ring 14 and a second sealing ring 15 (end face seal), as well as a third sealing ring 16 and a fourth sealing ring 17 (axial seal). The entire assembly is fixed to the grab beam cable junction box by bolts 18, forming an effective sealing system to prevent river water from seeping in.

[0030] Reference Figure 2 In one embodiment provided in this application, the female connector element 2 further includes a cavity 23 disposed inside the housing 22. The side wall of the housing 22 is provided with a first sealing ring 24, a second sealing ring 25, a third sealing ring 26 and a fourth sealing ring 27. The cavity 23 is filled with a chloroprene rubber vulcanized material to fix the pin assembly 21 and fill the cavity.

[0031] The two end face first sealing rings 24, second sealing rings 25 and two axial third sealing rings 26 and fourth sealing rings 27 are locked together by locking nut B. The locking of these sealing rings by locking nut B further enhances the sealing effect.

[0032] The female component 2 also includes an intermediate component 28 disposed at the end of the housing 22. The intermediate component 28 is connected to the housing 22 to form a sealed cavity. A tail component 29 is installed at the end of the intermediate component 28. The housing 22, the intermediate component 28 and the tail component 29 form a whole.

[0033] After the intermediate component 28 is connected to the outer casing 22, it is fixed by the fixing nut A.

[0034] The tail component 29 is used to securely fix the grab beam cable to the intermediate component 28, so that the outer shell 22 and the intermediate component 28 form a whole.

[0035] The tail assembly 29 is filled with epoxy resin to ensure the seal between the grab beam cable and the housing 22, the intermediate part 28 and the tail assembly 29.

[0036] When the male connector 1 and female connector 2 are mated together, the pin body 11 is inserted into the pin assembly 21 to complete the electrical connection. Simultaneously, the end face seal and axial seal structures work together to effectively prevent water intrusion even in underwater environments, ensuring the safety and reliability of the electrical connection and preventing damage to electrical components due to short circuits. This design not only improves the efficiency of the gantry crane's underwater beam grabbing operation but also significantly enhances operational safety.

[0037] Reference Figures 1-3 In one embodiment provided in this application, a male connector and a female connector are fabricated, and pins and pin kits are respectively provided inside them; the pins and pin kits are vulcanized and fixed using neoprene rubber and the cavity is filled; corresponding sealing rings and sealing rings are installed on the male connector and the female connector; the male connector is installed on the grab beam cable junction box and fixed with bolts; the female connector is connected to the grab beam cable and locked with a lock nut; the intermediate part is connected to the outer shell and fixed with a lock nut; the intermediate part is filled with epoxy resin; the tail part is installed and the grab beam cable is firmly fixed.

[0038] First, confirm that all necessary components and tools are complete, including male component 1 (including pin body 11), female component 2 (including pin assembly 21), sealing ring, filler material (chloroprene rubber vulcanized material), epoxy resin, bolts, lock nuts, etc. Inspect the grab beam cable to be installed to ensure it is undamaged and of appropriate length.

[0039] A filling cavity 12 is provided inside the housing 13 of the male connector 1, and the cavity is filled with neoprene rubber vulcanized material to ensure that the pin body 11 is firmly fixed. A first sealing ring 14, a second sealing ring 15 (end face seal), a third sealing ring 16, and a fourth sealing ring 17 (axial seal) are installed on the side wall of the housing 13. The male connector 1 is fixed to the grab beam cable junction box with bolts 18 to form an effective sealing system.

[0040] A cavity 23 is provided inside the housing 22 of the female connector element 2, and is also filled with neoprene rubber vulcanized material to fix the pin assembly 21. A first sealing ring 24, a second sealing ring 25 (end face seal), a third sealing ring 26, and a fourth sealing ring 27 (axial seal) are installed on the side wall of the housing 22. An intermediate component 28 is connected to the housing 22 to form a sealed cavity. These sealing rings are locked with a lock nut B to enhance the sealing effect. The tail component 29 is filled with epoxy resin and installed at the end of the intermediate component 28 to ensure that the grab beam cable is firmly fixed in the integral structure formed by the housing 22, the intermediate component 28, and the tail component 29.

[0041] Align male connector 1 and female connector 2 to accurately insert pin body 11 into pin assembly 21, completing the electrical connection. Ensure the sealing rings at both ends are in tight contact, forming a complete end face and axial sealing system. Use lock nut A to secure intermediate component 28 to housing 22, ensuring the stability of the entire assembly. After installation, check that all sealing points are tight and leak-free. Perform electrical performance testing to ensure proper connection and no short circuits. Finally, conduct underwater simulation testing to verify that the waterproof performance of the sealing system meets the expected standards.

[0042] By following the above steps, the installation of the cable joint for the gantry crane of the hydropower station can be effectively completed, ensuring good sealing and safety during underwater operations, thereby guaranteeing operational efficiency and safe operation of the equipment.

[0043] Conventional hydropower station environment

[0044] The environment is inside a typical hydroelectric power station, with a water depth of less than 100 meters and a moderate water flow speed.

[0045] The water quality is relatively clean, but it contains a certain amount of sediment.

[0046] Use standard male component 1 and female component 2 to ensure that all sealing rings (including end face sealing rings and axial sealing rings) are correctly installed, and fill with neoprene vulcanizing material to enhance the sealing effect.

[0047] After the connection is completed, a water pressure test is conducted to simulate the actual working pressure and ensure that there is no leakage.

[0048] After installation, regularly check the sealing condition and electrical performance to ensure long-term stable operation.

[0049] Deep-sea cable application environment

[0050] It is used in deep-sea environments, at depths of hundreds of meters, and must withstand high water pressure and the strong corrosiveness of seawater. Strong ocean currents also exert significant impact on the equipment.

[0051] All components of male connector 1 and female connector 2 are made of corrosion-resistant materials, and the sealing rings are made of special rubber material that is resistant to seawater corrosion.

[0052] Additional protective measures were implemented, such as adding an anti-corrosion coating to the outer shell and using thicker neoprene vulcanized filler to withstand higher water pressure. High-pressure water flow impact tests were conducted to verify its sealing performance and durability under extreme conditions. Simultaneously, epoxy resin was used to fill the tail section 29 to further enhance the sealing effect and prevent seawater intrusion.

[0053] Hydropower facilities in polar or cold regions

[0054] The ambient temperature is extremely low, possibly reaching tens of degrees below zero, and the water is covered with ice, containing a large amount of floating ice.

[0055] There are frequent temperature changes, with frequent transitions from extremely low temperatures to relatively warm conditions.

[0056] All components should be manufactured using materials with strong low-temperature adaptability, especially the sealing rings, which should possess good low-temperature elasticity and resistance to freeze-cracking. Before installation, a temperature cycling test should be conducted to simulate the temperature change from extremely low to normal, ensuring that the sealing system maintains good sealing performance even under drastic temperature fluctuations.

[0057] Considering the wear that may be caused by friction from ice and snow, an abrasion-resistant coating is added to protect the surface of the casing, and the design is optimized to reduce the possibility of snow and ice accumulation, such as by adopting a smooth, streamlined design.

[0058] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A cable connector for a gantry crane beam grabbing mechanism in a hydropower station, characterized in that: include, Male connector (1), which is mounted on the grab beam cable junction box and includes a pin body (11); The female connector (2) is fabricated together with the grab beam cable and has a pin assembly (21) inside. The male connector (1) and the female connector (2) are connected by a pin body (11) and a pin kit (21), and the male connector (1) and the female connector (2) are provided with an end face seal and an axial seal structure.

2. The cable joint for the bridge gantry crane of a hydropower station according to claim 1, characterized in that: The male connector (1) includes a filling cavity (12) which is located inside the housing (13). The side wall of the housing (13) is provided with a first sealing ring (14), a second sealing ring (15), a third sealing ring (16), and a fourth sealing ring (17). The filling material of the filling cavity (12) is made of chloroprene rubber vulcanized and is used to fix the pin body (11) and fill the cavity.

3. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 2, characterized in that: The first sealing ring (14) and the second sealing ring (15) on the two end faces, and the third sealing ring (16) and the fourth sealing ring (17) on the two axial sides, are fixed to the grab beam cable junction box by bolts (18) to form a sealing system.

4. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 3, characterized in that: The female connector element (2) also includes a cavity (23) disposed inside the housing (22). The side wall of the housing (22) is provided with a first sealing ring (24), a second sealing ring (25), a third sealing ring (26) and a fourth sealing ring (27). The cavity (23) is filled with a neoprene rubber vulcanized material to fix the pin assembly (21) and fill the cavity.

5. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 4, characterized in that: The first sealing ring (24), the second sealing ring (25) on both end faces and the third sealing ring (26), the fourth sealing ring (27) on both axial sides are locked together by a lock nut (B) to enhance the sealing effect.

6. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 5, characterized in that: The female head element (2) also includes an intermediate part (28) disposed at the end of the outer shell (22). The intermediate part (28) is connected to the outer shell (22) to form a sealed cavity. A tail part (29) is installed at the end of the intermediate part (28). The outer shell (22), the intermediate part (28) and the tail part (29) form a whole.

7. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 6, characterized in that: After the intermediate component (28) is connected to the outer shell (22), it is fixed by a fixing nut (A).

8. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 7, characterized in that: The tail component (29) is used to securely fix the grab beam cable to the intermediate component (28), thereby forming a whole with the outer shell (22) and the intermediate component (28).

9. The cable joint for grabbing the bridge girder of a hydropower station bridge crane according to claim 8, characterized in that: The tail component (29) is filled with epoxy resin to ensure the sealing between the grab beam cable and the outer shell (22), the intermediate component (28) and the tail component (29).

10. A method for connecting a cable joint for a bridge gantry crane's beam grabbing mechanism, characterized in that: The hydropower station bridge gantry crane cable joint according to any one of claims 1 to 9 further includes, Make male and female connectors, and install pins and pin assemblies inside them respectively; The insert and insert assembly are vulcanized and fixed with neoprene rubber, and the cavity is filled. Install appropriate sealing rings and sealing rings on the male and female connectors; Install the male connector onto the grab beam cable junction box and secure it with bolts; Connect the female connector to the grab beam cable and tighten it with the lock nut; Connect the intermediate component to the housing and secure it with a lock nut; The intermediate component is filled with epoxy resin; Install the tail assembly and securely fasten the grab beam cable.

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