Single-core high-performance joint

Abstract

The utility model discloses a single-core high-performance joint, which relates to the technical field of connecting joints, and comprises a middle joint body, two ends of the middle joint body are circular truncated cone-shaped, the outer wall of the middle joint body is wrapped with a semi-conductive outer shielding layer, the outer wall of the semi-conductive outer shielding layer is wrapped with an insulating tape half-overlapping cover, and the insulating tape half-overlapping cover is wrapped with a semi-conductive outer shielding layer. The outer wall of the insulating tape half-cover is wrapped by a waterproof tape half-cover, and the two ends of the intermediate joint body are arranged to be of a circular truncated cone-shaped structure, so that the intermediate joint body can be better wrapped by a semiconductive outer shielding layer, and the insulating tape half-cover is used for insulating the intermediate joint body and the semiconductive outer shielding layer. And then waterproof wrapping connection processing is carried out on the intermediate joint body and the semi-conductive outer shielding layer through the waterproof belt half cover, so that the connection of the intermediate joint body to the cable can be more stable, and the quality of the connection of the intermediate joint body to the cable is improved.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically a single-core high-performance connector. Background Technology

[0002] As is generally known, a single-core high-performance connector is a cable joint located in the middle of a cable line. It is a cable accessory used for intermediate connections of cross-linked or oil-immersed cables of various voltage levels. Its main functions are to ensure unobstructed circuitry, maintain cable sealing, and guarantee the insulation level at the cable joint, ensuring its safe and reliable operation.

[0003] For example, patent CN205882659U, published on January 11, 2017, entitled "A Single-Core Cable Intermediate Joint," relates to the field of cable connectors, and particularly to a single-core cable intermediate joint. This utility model describes a single-core cable intermediate joint, comprising a joint body in which spring contacts and a disassembly sleeve are symmetrically mounted. The joint body also contains symmetrically arranged grooves and sliding channels. The disassembly sleeve has a pressure head, a shoulder, a compression groove, and a flange. The spring contacts are installed in the grooves, and the shoulder and sliding channel cooperate to form a sliding pair. A gap exists between the pressure head and the joint body. Contact pieces are evenly distributed on the spring contacts, and the contact pieces are knurled. This utility model features a simple structure, enabling simple and quick connection and disconnection of cables. After connection, the cable can rotate relative to the intermediate joint, facilitating operation in confined spaces.

[0004] The shortcoming of the existing technology is that the outer diameter of both ends of the intermediate joint is relatively large. When the cable is bent, the intermediate joint will warp, which makes the waterproof tape easy to slip off, thus causing external moisture or water to enter the cable insulation surface. Utility Model Content

[0005] The purpose of this invention is to provide a single-core high-performance connector to solve the above-mentioned problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a single-core high-performance connector, comprising an intermediate connector body, the two ends of which are frustoconical, a semi-conductive outer shielding layer wrapped around the outer wall of the intermediate connector body, an insulating tape half-covering wrapped around the outer wall of the semi-conductive outer shielding layer, and a waterproof tape half-covering wrapped around the outer wall of the insulating tape half-covering.

[0007] The aforementioned waterproof tape partially covers the outer wall of which is wrapped with PVC tape.

[0008] As mentioned above, the interior of the intermediate connector body is provided with a semi-conductive inner shielding layer.

[0009] As described above, both ends of the semiconductive inner shielding layer are conical ring structures with a diameter that gradually increases from one end to the other.

[0010] As mentioned above, a connecting pipe is provided inside the semiconductive inner shielding layer.

[0011] The connecting pipe mentioned above is made of metal.

[0012] As mentioned above, a conical groove is formed at each of the two ends inside the intermediate connector body.

[0013] As mentioned above, each of the two conical grooves is provided with a half-conductive stress cone.

[0014] As mentioned above, both of the aforementioned semiconductive stress cones are connected to the intermediate joint body and the semiconductive outer shielding layer.

[0015] As described above, the radius of the two semiconductive stress cones gradually increases from the end furthest from the semiconductive inner shielding layer to the end closest to the semiconductive inner shielding layer.

[0016] The beneficial effects of this utility model are as follows: by setting both ends of the intermediate connector body to a frustum-shaped structure, the intermediate connector body can better wrap the semi-conductive outer shielding layer, and the intermediate connector body and the semi-conductive outer shielding layer are insulated by the partial overlap of the insulating tape, and then the intermediate connector body and the semi-conductive outer shielding layer are waterproofed by the partial overlap of the waterproof tape, so that the connection between the intermediate connector body and the cable can be more stable and the quality of the connection between the intermediate connector body and the cable can be improved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a partial cross-sectional structural diagram of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Intermediate joint body; 2. Semi-conductive outer shielding layer; 3. Insulating tape half-overlap; 4. Waterproof tape half-overlap; 5. PVC tape; 6. Semi-conductive inner shielding layer; 7. Connecting pipe; 8. Semi-conductive stress cone. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, an embodiment of the present invention provides a single-core high-performance connector, including an intermediate connector body 1, the two ends of which are frustoconical, a semi-conductive outer shielding layer 2 wrapped on the outer wall of the intermediate connector body 1, an insulating tape half-cover 3 wrapped on the outer wall of the semi-conductive outer shielding layer 2, and a waterproof tape half-cover 4 wrapped on the outer wall of the insulating tape half-cover 3.

[0023] Specifically, the intermediate connector body 1 is made of an elastic material, giving it a certain degree of elasticity. Both ends of the intermediate connector body 1 are frustoconical structures. When connecting the intermediate connector body 1 to the cable, it undergoes pre-expansion treatment, and then is wrapped around the pre-treated cable. This allows the intermediate connector body 1 to connect the cable, and the ends of the intermediate connector body 1 elastically retract to tightly adhere to the cable. The semi-conductive outer shielding layer 2 shields the electric field generated when the cable is connected. After the intermediate connector body 1 connects to the cable, the semi-conductive outer shielding layer 2 is wrapped with insulating tape (half-overlap 3) for insulation, allowing for insulation wrapping of both the intermediate connector body 1 and the semi-conductive outer shielding layer 2. Finally, the intermediate connector body 1 and the semi-conductive outer shielding layer 2 are wrapped with waterproof tape (half-overlap 4) for waterproofing the connection point. The outer wall of the waterproof half-cover 4 is wrapped with PVC tape 5, which provides waterproof protection for the intermediate joint body 1 and the semi-conductive outer shielding layer 2. This makes the connection between the intermediate joint body 1 and the cable more stable and improves the quality of the connection. Furthermore, since the two ends of the intermediate joint body 1 are frustoconical, the intermediate joint body 1 will not warp when the cable is bent, and will not affect the wrapping and connection of the insulation half-cover 3, waterproof half-cover 4, and PVC tape 5 to the cable and the intermediate joint body 1. This prevents the cable, insulation half-cover 3, waterproof half-cover 4, PVC tape 5, and intermediate joint body 1 from slipping, making the wrapping and connection of the insulation half-cover 3, waterproof half-cover 4, and PVC tape 5 to the cable and the intermediate joint body 1 more stable and improving the quality of the connection between the intermediate joint body 1 and the cable.

[0024] The shortcoming of the existing technology is that the outer diameter of both ends of the intermediate joint is relatively large. When the cable is bent, the intermediate joint will warp, which makes the waterproof tape easy to slip off, thus causing external moisture or water to enter the cable insulation surface.

[0025] The beneficial effects of this embodiment are as follows: by setting both ends of the intermediate connector body 1 into a frustum-shaped structure, the intermediate connector body 1 can better wrap the semi-conductive outer shielding layer 2, and the intermediate connector body 1 and the semi-conductive outer shielding layer 2 are insulated by the insulating tape half-covering 3, and then the intermediate connector body 1 and the semi-conductive outer shielding layer 2 are waterproofed by the waterproof tape half-covering 4, so that the connection between the intermediate connector body 1 and the cable can be more stable and the quality of the connection between the intermediate connector body 1 and the cable can be improved.

[0026] In another embodiment of this utility model, a semi-conductive inner shielding layer 6 is provided inside the intermediate connector body 1; both ends of the semi-conductive inner shielding layer 6 are tapered ring structures with a diameter that gradually increases from one end to the middle end; a connecting pipe 7 is provided inside the semi-conductive inner shielding layer 6; the connecting pipe 7 is made of metal; a tapered groove is opened at each end inside the intermediate connector body 1; a semi-conductive stress cone 8 is provided in each of the two tapered grooves; both semi-conductive stress cones 8 are connected to the intermediate connector body 1 and the semi-conductive outer shielding layer 2; the radius of the two semi-conductive stress cones 8 gradually increases from the end away from the semi-conductive inner shielding layer 6 to the end closer to the semi-conductive inner shielding layer 6.

[0027] Specifically, the intermediate connector body 1 has a semi-conductive inner shielding layer 6 inside. This semi-conductive inner shielding layer 6 eliminates air gaps on the surface of the conductive core (i.e., the cable), improving resistance to partial discharge and tree discharge. Both ends of the semi-conductive inner shielding layer 6 are tapered ring structures with a diameter gradually increasing from one end to the other, forming a "dumbbell" shape. Because the existing semi-conductive inner shielding layer 6 has a ring-shaped cylindrical structure in the middle, the electric field strength of the semi-conductive outer shielding layer 2 is relatively high, resulting in a lower shielding effect of the semi-conductive inner shielding layer 6. By setting the semi-conductive inner shielding layer 6 to a "dumbbell" shape... The dumbbell-shaped structure reduces the electric field strength of the semiconductive outer shielding layer 2 and improves the shielding effect of the semiconductive inner shielding layer 6 on the electric field. The semiconductive stress cone 8 gradually increases in radius from the end away from the semiconductive inner shielding layer 6 to the end closer to the semiconductive inner shielding layer 6. The semiconductive stress cone 8 is a conical cylindrical structure. By changing the geometry of the electric field concentration point at the position of the intermediate joint body 1, the electric field stress concentration is alleviated. Furthermore, the semiconductive stress cone 8 guides the electric field at the position of the intermediate joint body 1, reduces the electric field at the position of the semiconductive inner shielding layer 6, and improves the shielding effect of the semiconductive inner shielding layer 6 on the electric field.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A single-core high-performance connector, comprising an intermediate connector body, characterized in that, The two ends of the intermediate connector body are frustum-shaped. A semi-conductive outer shielding layer is wrapped around the outer wall of the intermediate connector body. An insulating tape half-covers the outer wall of the semi-conductive outer shielding layer. A waterproof tape half-covers the outer wall of the insulating tape half-cover.

2. The single-core high-performance connector according to claim 1, characterized in that, The outer wall of the waterproof tape, which partially overlaps the main body, is wrapped with PVC tape.

3. A single-core high-performance connector according to claim 1, characterized in that, The interior of the intermediate connector body is provided with a semi-conductive inner shielding layer.

4. A single-core high-performance connector according to claim 3, characterized in that, Both ends of the semiconductive inner shielding layer are conical ring structures with a diameter that gradually increases from one end to the middle end.

5. A single-core high-performance connector according to claim 3, characterized in that, A connecting pipe is provided inside the semi-conductive inner shielding layer.

6. A single-core high-performance connector according to claim 5, characterized in that, The connecting pipe is made of metal.

7. A single-core high-performance connector according to claim 1, characterized in that, A conical groove is formed at each of the two ends inside the body of the intermediate connector.

8. A single-core high-performance connector according to claim 7, characterized in that, Each of the two conical grooves is provided with a half-conductive stress cone.

9. A single-core high-performance connector according to claim 8, characterized in that, Both of the aforementioned semiconductive stress cones are connected to the intermediate joint body and the semiconductive outer shielding layer.

10. A single-core high-performance connector according to claim 9, characterized in that, The radius of the two semiconductive stress cones gradually increases from the end furthest from the semiconductive inner shielding layer to the end closest to the semiconductive inner shielding layer.

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