RU210995U1 - BUSHING - Google Patents

Abstract

The utility model relates to electrical engineering and electric power industry, namely to bushings for optical cable and optical cable embedded in a phase conductor, cable or ground wire of overhead power lines. The bushing is made in the form of a ribbed and/or smooth shell 1 made of silicone rubber with a longitudinal hole 2 and inputs 3, 4 and one mount. The shell 1 is reinforced with a pipe 5 made of a composite dielectric material filled with silicone sealant. One of the inputs 3, 4 can be sealed. The fastening unit is made in the form of a flange 6 with holes 7 for mounting bolts and can be structurally combined with the shell 1. The insulator integrates a branch coupling 8 of an optical cable, an optical cable built into a phase conductor, cable or ground wire of overhead power lines. A fragment of an optical cable can be threaded into the hole of the insulator and fixed inside it. The proposed bushing insulator for an optical cable and an optical cable embedded in a phase conductor, cable or lightning protection cable of overhead power lines is a universal multifunctional insulating device of the class of high-voltage bushings of various electrical equipment. It is characterized by high strength characteristics confirmed by a wide practice of industrial use, namely: mechanical strength sufficient to ensure long-term trouble-free operation, which allows the insulator to withstand, without damage and destruction during operation, significant bending and torsional effects constantly acting on overhead power lines, which makes it possible to significantly to improve the reliability of open electric power facilities. 5 z.p. f-ly, 1 ill.

Description

The utility model relates to electrical engineering and electric power industry, namely to bushings for optical cable embedded in the phase conductor of an overhead power line.

Known high-voltage bushing insulator containing a current-carrying rod, an insulating element consisting of an upper and lower parts, each of which is equipped with ribs, and a mounting flange, characterized in that the ribs are placed in the end zones of the upper and lower parts of the insulating element, while the distance from the ribs , farthest from the end of the insulator, to the flange is at least half the length of the corresponding part of the insulating element [1].

This high-voltage bushing, when used as an insulating element for optical cable and optical cable embedded in a phase conductor, cable or ground wire of overhead power lines, does not meet the requirements for operational reliability due to the fact that it is not characterized by sufficient bending and torsional rigidity, which are very important parameters for the above objects of using the bushing.

Also known is a high voltage input, essentially a bushing insulator containing a current-carrying rod, insulation having a conductive rubber coating on the inner surface, a tubular element made of conductive rubber, a support sleeve, upper and lower screens [2].

In addition to the fact that this technical solution is complex in design, material-intensive and, therefore, quite expensive, it is not suitable as insulating bushings for optical cables and optical cables embedded in a phase conductor, cable or ground wire of overhead power lines, since it is not enough works well under the action of bending and torsional loads.

The applicant set himself a specific task - to develop and put into operation a bushing insulator for an optical cable built into the phase conductor of an overhead power line, characterized by high strength characteristics, specifically high mechanical strength in such a way that the insulator withstands without damage and destruction over a long period of operation permanently acting on overhead power lines, significant bending and torsional effects. The above positive technical result was achieved due to a new set of essential design features of the proposed bushing insulator, presented in the following formula of the utility model: "bushing insulator for an optical cable built into the phase conductor of an overhead power line, made in the form of a finned shell of silicone rubber with a longitudinal hole and inputs designed to secure the optical cable, and at least one mount; to provide additional rigidity in bending and torsion, the shell is reinforced with a pipe made of a composite dielectric material, at least one input is made sealed and an optical cable spur is integrated into its composition; the shell is reinforced with a pipe made of plastic material; the attachment point is made in the form of a flange with holes for mounting bolts; the pipe cavity is filled with silicone sealant; the attachment unit is structurally integrated with the shell; a fragment of an optical cable is threaded into the hole and fixed inside the insulator.

The essence of the utility model is illustrated by the drawings, where in Fig. 1 shows a general view of a bushing for an optical cable embedded in a phase conductor of an overhead power line, made according to the present utility model.

The inventive bushing for an optical cable built into the phase wire of an overhead power line is made in the form of a ribbed sheath 1 made of silicone rubber with a longitudinal hole 2 and inputs 3, 4, designed to secure the optical cable built into the phase wire of the overhead power line and, according to at least one attachment point. To provide additional bending and torsional rigidity, the shell 1 is reinforced with a pipe 5 made of a composite dielectric material (plastic material) and filled with silicone sealant. One of the inputs 3, 4 can be sealed.

The fastening unit is made, for example, in the form of a flange 6 with holes 7 for mounting bolts and can be structurally combined with the shell 1.

The insulator incorporates a branch coupling 8 of an optical cable built into the phase conductor of an overhead power line.

A fragment of an optical cable can be threaded into the hole of the insulator and fixed inside it.

The utility model works as follows.

For example, the installation of an optical cable 9 embedded in the phase conductor of an overhead power line is carried out in this way. The phase wire with a built-in optical cable 9 through the insert 10 and the cable gland 3 is fixed in the branch sleeve 8, while the cable is preliminarily cut, in which the optical module 11 is released, which enters the bushing insulator through the sealing unit 12 of the cable gland 3. Then the optical fiber is wound on a cassette for laying splices and a supply of optical fiber 13 and the optical fiber of the cable is welded with the optical fiber located in the bushing.

On the other side of the bushing, an optical cable 14 is fixed through the cable gland 4, which is built into the bushing. The end 15 of the optical cable 14 enters the bushing insulator through the sealing assembly 16 of the cable gland 4, pre-cut in order to isolate the optical module 17. Next, the stock of cleaned fiber is wound on a cassette for laying splices and the stock of fiber 18 and welding with the optical fiber of the bushing is performed.

The proposed bushing insulator for an optical cable built into the phase conductor of an overhead power line is a universal multifunctional insulating device of the class of high-voltage bushings of various electrical equipment used in such important above-mentioned electric power facilities. It is characterized by high strength characteristics confirmed by a wide practice of industrial use, namely: mechanical strength sufficient to ensure long-term trouble-free operation, which allows the insulator to withstand, without damage and destruction during operation, significant bending and torsional effects constantly acting on overhead power lines, which makes it possible to significantly to improve the reliability of open electric power facilities.

Sources of information.

[1] Description of the utility model to the patent No. 10931 "High-voltage bushing", H01V 17/26, declared 12/07/1998, published 08/16/1999.

[2] Description of the invention to the patent No. 2195032 "High voltage input", H01B 17/26, declared 12/28/2000, published 12/20/2002.

[3] Description of the utility model to the patent No. 32921 "Insulator bushing", Н01В 17/26, declared on 02/20/2003, published on 09/27/2003.

[4] Description of the utility model to the patent No. 61463 "Insulator bushing", H01B 17/26, declared on 02.20.2003, published on 09.27.2003.

[5] Description of the utility model to the patent No. 76746 "Insulator bushing", H01B 17/26, declared on 02.20.2003, published on 09.27.2003.

[6] Description of the utility model to the patent No. 48436 "Insulator bushing", H01B 17/26, declared 20.02.2003, published 27.09.2003.

[7] Description of the utility model to the patent No. 73119 "Insulator bushing", H01B 17/26, declared on 02.20.2003, published on 09.27.2003.

[8] Description of the utility model to the patent No. 129701 "Insulator bushing", H01B 17/26, declared on 20.02.2003, published on 27.09.2003.

[9] Description of the invention to the patent No. 1725268 "High-voltage detachable input", H01B 17/26, convention priority 12/18/1989.

[10] Description of the invention to the patent No. 2070744 "Entering a high-voltage switch", H01B 17/26, convention priority 01/28/1994.

[11] US Patent (US) No. 5466891 A "High-voltage bushing (bushing)", H01B 17/26, published 11/14/1995.

[12] US Patent (US) No. 4670625 A "High-voltage bushing (bushing)", H01B 17/26, published 06/02/1987.

Claims (6)

1. A bushing for an optical cable built into the phase conductor of an overhead power line, made in the form of a ribbed sheath made of silicone rubber with a longitudinal hole and inputs designed to secure the optical cable, and at least one attachment point, characterized in that to provide additional bending and torsional rigidity, the shell is reinforced with a pipe made of a composite dielectric material, at least one bushing is made hermetic and an optical cable spur is integrated into its structure. 2. An insulator according to claim 1, characterized in that the shell is reinforced with a pipe made of plastic material. 3. The insulator according to claim 1, characterized in that the mount is made in the form of a flange with holes for the mounting bolts. 4. An insulator according to claim 1, characterized in that the pipe cavity is filled with silicone sealant. 5. The insulator according to claim 1, characterized in that the mount is structurally integrated with the shell. 6. An insulator according to claim 1, characterized in that a fragment of an optical cable is threaded into the hole and fixed inside the insulator.

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