High-voltage transmission line clamp equipment

Abstract

The utility model relates to the technical field of high-voltage wire clamps, and discloses a high-voltage transmission line wire clamp device. The utility model aims to solve the technical problems that in the prior art, the mechanical strength and durability are insufficient, the electrical performance is poor, the resistance loss is large, the power transmission efficiency is further reduced, the cable is further difficult to adapt to outdoor complex environments, and the cable does not have corrosion resistance and lightning protection capability. The cable comprises a strain clamp, the strain clamp comprises a drainage plate and a strain pipe, the strain pipe comprises a wire crimping area, a first non-crimping area, a steel anchor crimping area and a second non-crimping area, a stranded wire is connected in the wire crimping area through a crimping technology, and a steel anchor crimping groove is arranged in the steel anchor crimping area to accommodate a steel anchor. The stranded wire and the steel anchor are connected through a crimping process in the first non-pressing area, and the welding part of the drainage plate and the strain pipe is located in the second non-pressing area. The utility model aims to improve the efficiency, safety and stability of power transmission, and is suitable for various application scenes in a modern high-voltage power transmission network.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage line clamp technology, and in particular to a high-voltage transmission line clamp device. Background Technology

[0002] The power industry is a crucial foundation of the national economy and a vital component of the energy industry. The power generation process is continuous, encompassing generation, transmission, transformation, and distribution. Problems in any stage can instantly impact or even ripple through the entire system. Failure to address issues promptly or implement appropriate control measures can trigger a chain reaction, potentially leading to widespread power outages and escalating accidents. Therefore, ensuring the safe and stable operation of the power system is of paramount importance. Line clamps are connection terminals in power grid systems and are key components widely used for connections between transmission lines and electrical equipment. They typically consist of a securing stranded wire section and an electrical equipment connection section. The former is often a tubular structure, while the latter is a terminal block. SY series line clamps are usually manufactured using aluminum tubing welded to the terminal block or integral casting. NY series tension clamps, primarily used in transmission lines, are made of aluminum alloy and are manufactured by welding tension tubing to a current-carrying plate. However, regardless of whether welding or casting is used, the joint between the tubular structure and the terminal plate or drain plate is always a weak point, prone to defects, which accelerates the failure of the clamps during service, ultimately leading to the interruption of electrical transmission, causing serious power grid accidents, and in severe cases, large-scale power outages, resulting in incalculable losses to the national economy.

[0003] Chinese patent document 202410048433.8 discloses an intelligent crimping device for tension clamps of high-voltage transmission lines, including a mobile loading frame. The mobile loading frame is equipped with an adjustment mechanism, a crimping mechanism, and an intelligent control mechanism. One end of the adjustment mechanism is driven by a clamping mechanism. A transmission cylinder is provided on the side of the mobile loading frame away from the crimping inlet of the clamping mechanism. The transmission cylinder is driven by a transmission shaft, which is connected to a power mechanism. The transmission shaft is laterally rotatably connected to a support plate, and the support plate is fixed on the mobile loading frame. One end of the transmission cylinder is hinged to a connecting plate, and the other end of the connecting plate is hinged to a moving guide bar. The moving guide bar slides vertically in a guide rail, which is fixed on the mobile loading frame. One end of the moving guide bar is rotatably connected to the guide plate.

[0004] However, the above-mentioned solutions suffer from at least the following technical problems during implementation: insufficient mechanical strength and durability, poor electrical performance resulting in high resistance loss, which in turn reduces power transmission efficiency. Furthermore, they are unsuitable for complex outdoor environments and lack corrosion resistance and lightning protection capabilities. Therefore, there is an urgent need to propose a high-voltage transmission line clamp device. Summary of the Invention

[0005] In view of the above technical problems, this disclosure provides a high-voltage transmission line clamp device, which solves the technical problems of insufficient mechanical strength and durability, poor electrical performance, resulting in large resistance loss, which in turn reduces power transmission efficiency, makes it difficult to be used in complex outdoor environments, and lacks corrosion resistance and lightning protection capabilities.

[0006] According to one aspect of this disclosure, a high-voltage transmission line clamp device is provided, comprising a tension clamp for connecting a tension tower and an overhead conductor. The tension clamp includes a current-draining plate and a tension tube welded together. The tension tube includes a conductor crimping area, a first non-crimping area, a steel anchor crimping area, and a second non-crimping area connected in sequence. Stranded wires are connected in the conductor crimping area by a crimping process. A steel anchor crimping groove is provided in the steel anchor crimping area to accommodate a steel anchor. Stranded wires and steel anchors are connected in the first non-crimping area by a crimping process. The welded portion of the current-draining plate and the tension tube is located in the second non-crimping area.

[0007] It also includes a single conductor clamp for connecting the busbar to the equipment. The single conductor clamp includes an integrally forged crimping tube, which includes a conductor crimping portion for accommodating the conductor and a connecting plate.

[0008] The stranded wire includes a steel core, which is covered with a layer of aluminum, and the steel core is connected to a steel anchor by a crimping process.

[0009] The tension pipe and the diversion plate are made of aluminum alloy.

[0010] The pressure pipe and connecting plate are made of aluminum alloy.

[0011] The tension clamp is connected to the surge arrester via a surge conductor. The surge conductor includes a flexible conductor, both ends of which are connected to rigid aluminum core conductors. The flexible conductor is a copper braided strip.

[0012] The beneficial effects of this utility model are as follows: Through a rationally designed partitioned area, including a conductor crimping area and a steel anchor crimping area, stress can be effectively dispersed, improving the mechanical strength and reliability of the entire clamp. Using high-conductivity aluminum alloy as the main material, while ensuring good contact between the steel core and aluminum layer of the stranded wire, helps reduce resistance loss and improve electrical performance. The integrated surge protector wire connects to the surge arrester, improving the overall lightning protection capability of power transmission and enhancing safety. The integrally forged crimping tube and clear functional partition design make installation simpler and faster, and also facilitate future inspection and maintenance. The use of corrosion-resistant materials ensures stable operation in various environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a high-voltage transmission line clamp device;

[0014] Figure 2 This is a top view of a tension clamp;

[0015] Figure 3 for Figure 2 Sectional view of plane AA;

[0016] Figure 4 This is a schematic diagram of a single-wire clamp structure;

[0017] Figure 5 This is a top view of a single conductor clamp;

[0018] Figure 6 for Figure 5 Sectional view of plane AA;

[0019] The components in the diagram are named as follows: 1. Tension clamp; 2. Drain plate; 3. Tension tube; 4. Conductor crimping area; 5. First uncrimped area; 6. Steel anchor crimping area; 7. Second uncrimped area; 8. Stranded wire; 9. Steel anchor; 10. Single conductor clamp; 11. Crimping tube; 12. Conductor crimping part; 13. Connecting plate; 14. Steel core; 15. Surge arrester; 16. Flexible conductor; 17. Rigid aluminum core conductor; 18. Surge protection conductor. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example 1

[0021] This example discloses a high-voltage transmission line clamp device. See [link to relevant documentation]. Figures 1 to 6 ,

[0022] The system includes a tension clamp 1 that connects the tension tower to the overhead conductor. The tension clamp 1 includes a drain plate 2 and a tension tube 3 that are welded together. The tension tube 3 includes a conductor crimping area 4, a first non-crimping area 5, a steel anchor crimping area 6, and a second non-crimping area 7 that are connected in sequence. The conductor crimping area 4 is connected with stranded wires 8 through a crimping process. The steel anchor crimping area 6 is provided with a steel anchor crimping groove to accommodate a steel anchor 9. The first non-crimping area 5 is connected with stranded wires 8 and steel anchors 9 through a crimping process. The welded part of the drain plate 2 and the tension tube 3 is located in the second non-crimping area 7.

[0023] In some embodiments of this disclosure, a single conductor clamp 10 for connecting a busbar to a device is also included. The single conductor clamp 10 includes an integrally forged crimping tube 11, which includes a conductor crimping portion 12 for accommodating a conductor and a connecting plate 13.

[0024] In some embodiments of this disclosure, the stranded wire includes a steel core 14, which is covered with an aluminum layer, and the steel core 14 is connected to a steel anchor 9 by a crimping process.

[0025] In some embodiments of this disclosure, the tension tube 3 and the drainage plate 2 are made of aluminum alloy.

[0026] In some embodiments of this disclosure, the press-fit pipe 11 and the connecting plate 13 are made of aluminum alloy.

[0027] In some embodiments of this disclosure, the tension clamp 1 is connected to the surge arrester 15 via a surge conductor 18. The surge conductor 18 includes a flexible conductor 16, both ends of which are connected to rigid aluminum core conductors 17. The flexible conductor 16 is a copper braided strip.

[0028] During operation, the tension clamp 1 achieves effective connection between the stranded wire 8 and the steel anchor 9 through the internal conductor crimping area 4 and steel anchor crimping area 6, ensuring that the overhead conductor can be stably suspended on the tension tower while maintaining good electrical connection. The single conductor clamp 10 connects the busbar to electrical equipment, and the integrally forged crimping tube 11 ensures a high-strength and highly conductive connection. The first un-crimped area 5 and the second un-crimped area 7 help disperse the stress caused by conductor tension, protecting the crimped parts from damage and extending service life. The tension clamp 1 is connected to the surge arrester 15 via the lightning protection conductor 18, and the flexible conductor 16 uses a copper braided design to provide lightning protection. The tension tube 3, the current-draining plate 2, the crimping tube 11, and the connecting plate 13 are all made of aluminum alloy, which not only improves conductivity but also enhances corrosion resistance, enabling the components to operate stably for a long time in harsh environments.

[0029] Although some preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high voltage power line clamp apparatus, characterized by: The tension clamp for connecting the tension tower and the overhead conductor wire comprises a welded drainage plate and a tension pipe, and the tension pipe comprises a conductor wire crimping area, a first non-crimping area, a steel anchor crimping area and a second non-crimping area connected in sequence, the conductor wire is connected in the conductor wire crimping area through a crimping process, the steel anchor crimping groove is arranged in the steel anchor crimping area to accommodate the steel anchor, and the conductor wire is connected with the steel anchor in the first non-crimping area through the crimping process.

2. The high voltage power line clamp device of claim 1, wherein: The single conductor clamp for connecting the bus and the equipment comprises a whole forged crimping pipe, and the crimping pipe comprises a conductor wire crimping part for accommodating the conductor wire and a connecting plate.

3. The high-tension power line clamp apparatus of claim 1, wherein: The conductor wire comprises a steel core, and the steel core is coated with a layer of aluminum.

4. The high-tension power line clamp apparatus of claim 1, wherein: The material of the tension pipe and the drainage plate is an aluminum alloy.

5. The high-tension power line clamp apparatus of claim 2, wherein: The material of the crimping pipe and the connecting plate is an aluminum alloy.

6. The high-tension power line clamp apparatus of claim 1, wherein: The tension clamp is connected with the lightning arrester through a lightning conductor, the lightning conductor comprises flexible conductor wires, the two ends of the flexible conductor wires are connected with hard aluminum core conductor wires, and the flexible conductor wires are copper braid belts.

Images