High-voltage low-loss cable joint

Abstract

The utility model discloses a high-voltage low-loss cable joint, which belongs to the technical field of power transmission and comprises two cables, the two cables are connected through a joint part, an outer sleeve is mounted on the outer surface of each cable, heat dissipation mechanisms are arranged inside and outside each outer sleeve, and each heat dissipation mechanism comprises a heat conduction plate, a first ventilation shell, a second ventilation shell and a sealing ring. By arranging the heat conducting plate, the annular clamping plate and the annular silica gel sheet, heat generated in the working process of the connector part can be rapidly conducted out, heat dissipation fins are arranged on the upper surface of the heat conducting plate, the heat dissipation area is greatly increased, heat dissipation is accelerated accordingly, meanwhile, the design of the first ventilation shell and the second ventilation shell is matched, the Venturi effect is utilized, and the heat dissipation efficiency is improved. And negative pressure is formed at the first narrow opening and the second narrow opening, so that air flow around the outer sleeve is effectively promoted, the heat dissipation efficiency is further improved, and the problem of poor heat dissipation of the high-voltage cable joint is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission, in particular to a high-voltage and low-loss cable connector. Background Art

[0002] In today's rapidly developing power transmission sector, high-voltage cable connectors, also known as cable heads, are crucial components for connecting cable lines. After cable installation, to create a continuous line, the individual cable segments must be connected together. These connection points are called cable connectors. The connectors in the middle of a cable line are called intermediate connectors, while those at each end are called terminal connectors. Cable connectors are primarily used to secure incoming and outgoing cables, providing protection against water, dust, and vibration. Their performance directly impacts the safe and stable operation of the entire power system.

[0003] High-voltage currents passing through cable connectors generate significant heat. If heat isn't dissipated effectively and promptly, the internal temperature of the connector will continue to rise. This not only reduces the cable's transmission efficiency but also accelerates the aging of the cable's insulation, shortening the connector's service life. Traditional cable connectors rely primarily on natural heat dissipation, but this has limited effectiveness and cannot meet the heat dissipation requirements of high-voltage cables transmitting high currents. Furthermore, reducing losses is a pressing issue for high-voltage cable connectors. Due to poor heat dissipation, traditional cable connectors often increase resistance and cause significant energy loss during transmission. This not only increases electricity costs but also violates the development of energy conservation and environmental protection. Utility Model Content

[0004] The embodiment of the utility model provides a high-voltage and low-loss cable connector to solve the problems in the prior art.

[0005] The embodiment of the present utility model adopts the following technical scheme: a high-voltage and low-loss cable joint, comprising two cables, the two cables being connected by a joint portion, an outer sleeve being installed on the outer surface of the cable, a heat dissipation mechanism being provided inside and outside the outer sleeve, the heat dissipation mechanism comprising a heat conducting plate, a first ventilation shell, and a second ventilation shell, the heat conducting plate at least partially passing through the tube wall of the outer sleeve and being placed in the outer sleeve and being slidably connected to the outer sleeve, an annular clamping plate being installed on the bottom surface of the heat conducting plate, an annular silicone sheet being installed on the side of the annular clamping plate close to the joint portion, the annular silicone sheet being tightly attached to the joint portion after being installed in place, a heat dissipation fin being installed on the upper surface of the heat conducting plate, the first ventilation shell being arranged on the right side of the heat dissipation fin, a first narrow opening being provided at one end of the first ventilation shell close to the heat dissipation fin, the second ventilation shell being arranged on the left side of the heat dissipation fin, a second narrow opening being provided at one end of the second ventilation shell close to the heat dissipation fin.

[0006] Preferably, a telescopic rod and a spring are fixedly connected to one side of the annular clamping plate close to the heat conducting plate, the top end of the telescopic rod is mounted on the inner wall of the outer sleeve, and the top end of the spring is fixedly connected to the inner wall of the outer sleeve.

[0007] Preferably, the bottom surface of the first ventilation shell is fixedly connected to a first mounting bottom shell, and the first mounting bottom shell is fixedly connected to the outer surface of the outer sleeve.

[0008] Preferably, the bottom surface of the second ventilation shell is fixedly connected to a second mounting bottom shell, and the second mounting bottom shell is fixedly connected to the outer surface of the outer sleeve.

[0009] Preferably, one end of the cable is fixedly connected to a sealing sleeve, and the inner side of the sealing sleeve is tightly fitted to the cable.

[0010] Preferably, the outer surface of the sealing sleeve is fastened with a first clamp and a second clamp, and the first clamp and the second clamp are fastened together by two nuts.

[0011] At least one of the above technical solutions adopted in the embodiment of the present utility model can achieve the following beneficial effects:

[0012] Firstly, the utility model can quickly conduct the heat generated by the joint during the working process by arranging a heat conducting plate, an annular clamping plate and an annular silicone sheet. Among them, the heat conducting plate and the annular clamping plate are made of high thermal conductivity materials to ensure efficient heat transfer. Furthermore, by arranging heat dissipation fins on the upper surface of the heat conducting plate, the heat dissipation area is greatly increased, thereby accelerating the dissipation of heat. At the same time, in conjunction with the design of the first ventilation shell and the second ventilation shell, the Venturi effect is utilized to form negative pressure at the first narrow opening and the second narrow opening, effectively promoting the air flow around the outer sleeve, further improving the heat dissipation efficiency, and effectively solving the problem of poor heat dissipation of the high-voltage cable joint, reducing the operating temperature of the cable joint, not only improving the service life of the cable joint, but also enhancing its safety performance, thereby reducing energy loss during power transmission and improving energy utilization efficiency, which is in line with the current development trend of energy conservation and environmental protection.

[0013] Secondly, the utility model significantly enhances the sealing performance of the cable joint by arranging a sealing ring inside the outer sleeve and closely cooperating with the heat conducting plate. This design effectively prevents external pollutants such as moisture and dust from entering the joint, thereby protecting the internal structure and electrical performance of the cable joint.

[0014] Thirdly, the present invention can ensure a close fit between the heat conducting plate and the joint portion by providing a telescopic rod and a spring, thereby achieving effective heat transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A magnified schematic diagram of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat dissipation mechanism after the outer sleeve is cut in the utility model;

[0019] Figure 4 For this utility model Figure 3 A magnified schematic diagram of point B in the middle;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the heat dissipation fin, the first narrow opening, and the second narrow opening of the utility model;

[0021] Figure 6 This is a schematic diagram of the cut three-dimensional structure of the outer sleeve and the sealing ring of the utility model.

[0022] Reference numerals

[0023] 1. Cable; 2. Outer sleeve; 3. Connector; 4. Heat dissipation mechanism; 401. Heat conducting plate; 402. Annular clamping plate; 403. Annular silicone sheet; 404. Heat dissipation fins; 405. First mounting base; 406. First ventilation shell; 407. First narrow opening; 408. Second mounting base; 409. Second ventilation shell; 410. Second narrow opening; 411. Telescopic rod; 412. Spring; 413. Sealing ring; 5. Sealing sleeve; 6. First clamp; 7. Second clamp; 8. Nut. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] The technical solutions provided by various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1 to 6As shown, the embodiment of the present invention provides a high-voltage low-loss cable, which is mainly composed of two cables 1, an outer sleeve 2, a heat dissipation mechanism 4, a sealing sleeve 5, a first clamp 6 and a second clamp 7. Among them, the two cables 1 are firmly connected by a joint part 3.

[0027] The outer sleeve 2 is mounted on the outer surface of the cable 1 to protect the internal structure. The heat dissipation mechanism 4 is the core component of this utility model. Its detailed structure includes a heat conducting plate 401, an annular clamping plate 402, an annular silicone sheet 403, heat dissipation fins 404, a first ventilation shell 406, a second ventilation shell 409, and a sealing ring 413. The heat conducting plate 401 is made of a highly thermally conductive material to quickly transfer heat generated by the connector 3. In actual use, the heat conducting plate 401 and the annular clamping plate 402 are both made of graphite.

[0028] In some embodiments, an annular clamping plate 402 is installed on the bottom surface of the heat conducting plate 401, and the annular clamping plate 402 is connected to the outer sleeve 2 through a telescopic rod 411 and a spring 412 to ensure close contact between the clamping plate 402, the annular silicone sheet 403 and the joint part 3.

[0029] The annular silicone sheet 403 further ensures efficient heat transfer. To enhance heat dissipation, the upper surface of the heat conducting plate 401 is provided with heat dissipation fins 404, effectively increasing the heat dissipation area. The first and second ventilation shells 406 and 409 are located on either side of the heat dissipation fins 404. Their design utilizes the Venturi effect, generating negative pressure through the first and second narrow openings 407 and 410, thereby accelerating air flow and improving heat dissipation efficiency.

[0030] In some practical applications, a sealing sleeve 5 is provided at the end of the cable 1. The sealing sleeve 5 has good elasticity and can fit tightly to the cable 1 to ensure waterproof and dustproof performance.

[0031] Specifically, the first clamp 6 and the second clamp 7 are fastened together by the nut 8, which further enhances the safety and reliability of the cable joint.

[0032] During the specific use of the cable connector, the cable connector is first placed as a whole on the part of the cable 1 to be connected, and the connection of the two cables 1 is achieved through the connector part 3. Subsequently, one end of the cable connector is moved so that it tightly wraps the connector part 3, wherein the sealing sleeve 5 can pass through the connector part 3 due to its good elasticity. At this time, the position of the annular clamping plate 402 and the annular silicone sheet 403 can be adjusted by pulling the heat dissipation fin 404 to adapt to the actual thickness of the connector part 3. When the high-voltage cable transmits electric energy through the connector part 3, the connector part 3 will generate heat due to the thermal effect of the current. The heat is quickly conducted to its surface by the heat conducting plate 401, and efficient heat dissipation is achieved through the design of the heat dissipation fin 404 and the first ventilation shell 406 and the second ventilation shell 409.

[0033] Reference Figure 1 、 Figure 3 、 Figure 4 As shown, there are two heat dissipation mechanisms 4, both of which are arranged on the outer surface of the joint part 3 in a symmetrical state. There are four telescopic rods 411 and springs 412 in each heat dissipation mechanism 4, all of which are arranged between the annular clamping plate 402 and the inner wall of the outer sleeve 2.

[0034] Reference Figure 1 、 Figure 2 As shown, two sealing sleeves 5, first clamps 6, and second clamps 7 are provided, and are arranged at the left and right ends of the outer sleeve 2 in a symmetrical state. Each sealing sleeve 5 is installed and fixed on the cable 1 by a first clamp 6, a second clamp 7, and two nuts 8.

[0035] In another embodiment, the overall working principle based on the above embodiment is as follows:

[0036] When using the high-voltage, low-loss cable connector of the present invention, the connector must first be placed entirely over the connection point at one end of the cable 1. The two cables 1 are then securely connected through the connector portion 3. Once the connection is complete, the connector is moved so that one end tightly wraps around the connector portion 3. The sealing sleeve 5, which has excellent elasticity and can pass through the connector portion 3, can then be pulled to move the annular clamping plate 402 and the annular silicone sheet 403 outward to accommodate the actual thickness of the connector portion 3. During the transmission of electrical energy through the high-voltage cable through the connector portion 3, the connector portion 3 generates significant heat due to the current. To effectively conduct and dissipate this heat, the present invention has specially designed an efficient heat dissipation mechanism 4. The core component of the heat dissipation mechanism 4 is the heat conducting plate 401, which is made of a highly thermally conductive material and can quickly transfer the heat generated by the connector portion 3 to its wide surface. To ensure effective heat transfer, an annular silicone sheet 403 is provided between the heat conducting plate 401 and the connector portion 3 to achieve a tight fit and ensure effective heat transfer. At the same time, the annular clamping plate 402 is connected to the outer sleeve 2 by means of a telescopic rod 411 and a spring 412, thereby generating a certain pre-tightening force, further ensuring gapless contact between the heat conducting plate 401 and the joint part 3. In order to enhance the heat dissipation effect, a heat dissipation fin 404 is provided on the upper surface of the heat conducting plate 401. This design significantly increases the heat dissipation area and helps to quickly dissipate heat. In addition, the first ventilation shell 406 and the second ventilation shell 409 are respectively arranged on both sides of the heat dissipation fin 404, and utilize the Venturi effect to generate negative pressure at the first narrow opening 407 and the second narrow opening 410, thereby accelerating the air flow around the outer sleeve 2 and greatly improving the heat dissipation efficiency. At the end of the cable 1, sealing is achieved by the sealing sleeve 5, and combined with the tightening effect of the first clamp 6 and the second clamp 7, not only the waterproof and dustproof performance of the cable joint is ensured, but also the overall safety and reliability of the cable joint is further enhanced. Through the above design, the utility model effectively solves the heat dissipation problem faced by high-voltage cable connectors when transmitting large currents, significantly reduces the loss during power transmission, thereby extending the service life of the cable connector and improving its safety performance.

[0037] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A high-voltage, low-loss cable joint comprising two cables (1), characterized in that: The two cables (1) are connected via a joint portion (3); an outer sleeve (2) is installed on the outer surface of the cable (1); a heat dissipation mechanism (4) is provided inside and outside the outer sleeve (2); the heat dissipation mechanism (4) comprises a heat conducting plate (401), a first ventilation shell (406), and a second ventilation shell (409); the heat conducting plate (401) at least partially passes through the wall of the outer sleeve (2) and is placed inside the outer sleeve (2) and is slidably connected to the outer sleeve (2); an annular clamping plate (402) is installed on the bottom surface of the heat conducting plate (401); the annular clamping plate (402) is close to the joint portion (3) An annular silicone sheet (403) is installed on one side of the heat conducting plate (401). After the annular silicone sheet (403) is installed in place, it is tightly attached to the joint portion (3). A heat dissipation fin (404) is installed on the upper surface of the heat conducting plate (401). The first ventilation shell (406) is arranged on the right side of the heat dissipation fin (404). A first narrow opening (407) is provided at one end of the first ventilation shell (406) close to the heat dissipation fin (404). The second ventilation shell (409) is arranged on the left side of the heat dissipation fin (404). A second narrow opening (410) is provided at one end of the second ventilation shell (409) close to the heat dissipation fin (404).

2. A high-voltage, low-loss cable connector according to claim 1, characterized in that: A telescopic rod (411) and a spring (412) are fixedly connected to one side of the annular clamping plate (402) close to the heat conducting plate (401); the top end of the telescopic rod (411) is mounted on the inner wall of the outer sleeve (2); and the top end of the spring (412) is fixedly connected to the inner wall of the outer sleeve (2).

3. The high-voltage, low-loss cable connector according to claim 1, characterized in that: The bottom surface of the first ventilation shell (406) is fixedly connected to a first mounting bottom shell (405), and the first mounting bottom shell (405) is fixedly connected to the outer surface of the outer sleeve (2).

4. The high-voltage, low-loss cable connector according to claim 1, characterized in that: The bottom surface of the second ventilation shell (409) is fixedly connected to the second mounting bottom shell (408), and the second mounting bottom shell (408) is fixedly connected to the outer surface of the outer sleeve (2).

5. The high-voltage, low-loss cable connector according to claim 1, characterized in that: One end of the cable (1) is fixedly connected to a sealing sleeve (5), and the inner side of the sealing sleeve (5) is tightly fitted to the cable (1).

6. The high-voltage, low-loss cable connector according to claim 5, characterized in that: The outer surface of the sealing sleeve (5) is fastened with a first clamp (6) and a second clamp (7), and the first clamp (6) and the second clamp (7) are fastened together by two nuts (8).

7. The high-voltage, low-loss cable connector according to claim 1, characterized in that: A sealing ring (413) is also installed at the connection between the outer sleeve and the heat conducting plate, and the heat conducting plate (401) is sealed against the inner side of the sealing ring (413).

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