Novel non-corona composite structure spacer

Abstract

The utility model relates to the technical field of power transmission and distribution systems, and discloses a novel spacer with a corona-free combined structure. The spacer comprises an outer main framework, an outer branch framework and a neck bush. And the neck bush comprises two independent semicircles, barbs are arranged on the surfaces of the two semicircles, and the two semicircles are respectively clamped and fixed with the inner walls of the outer main framework and the outer branch framework into a whole. The outer main framework and the outer branch framework are temporarily connected through a hinge structure before installation, and after the drainage insulator is connected in series, the outer main framework and the outer branch framework are fastened through a bolt so as to clamp the drainage insulator. A bolt and a nut for fastening are both of a sunken shielding structure so as to prevent corona from being generated. According to the utility model, the structure is stable, the installation is convenient, the neck bush can be replaced to adapt to insulators of different specifications, the relative sliding and abrasion between the insulated wire and the wire clamp are effectively prevented, and the safety and reliability of line operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of power transmission and distribution system technology, specifically to a novel corona-free combined structure spacer bar. Background Technology

[0002] When power lines operate in harsh natural environments such as high temperatures and strong winds, issues such as line jumps or fitting collisions may occur, posing safety hazards to their normal operation. Using line fitting spacers can separate adjacent fittings, providing a higher level of safety for the power lines. Furthermore, due to line resistance, some energy loss occurs within the power lines. When adjacent fittings are not separated, mutual current interference increases energy loss. Using line fitting spacers better isolates adjacent fittings, reducing interference and thus improving power transmission efficiency.

[0003] A search revealed that CN206992650U discloses a sub-conductor spacer for suppressing galloping in compact lines, comprising: two triangular frames, a cross-shaped bushing, a clamp body, a clamp pressure plate, and a hinge pin; the two triangular frames are stacked vertically and fixedly connected by the cross-shaped bushing; each corner of the triangular frame is rotatably connected to the clamp body via a corresponding cross-shaped bushing; the clamp pressure plate is connected to the clamp body via the hinge pin, and the arc-shaped portion of the clamp pressure plate mates with the arc-shaped portion of the clamp body to form a conductor through-hole for the conductor to pass through. The sub-conductor spacer for suppressing galloping in compact lines has a triangular frame as its main body, making it lighter and more effective in suppressing line galloping.

[0004] The aforementioned type of conductor spacer for suppressing compact line galloping is prone to damaging the surface of the insulated lead wire during installation. Furthermore, this type of new corona-free composite structure spacer has poor positioning effect on the insulated lead wire. In windy weather, the lead wire sways under the action of wind force, causing relative sliding between the new corona-free composite structure spacer and the insulated lead wire. Friction occurs between the insulation layer of the insulated lead wire and the clamp, which can easily cause wear of the insulated lead wire and lead to wire breakage. Utility Model Content

[0005] This utility model proposes a novel corona-free composite structure spacer bar, which solves the problem that the existing spacer bar has a poor positioning effect on the insulated guide wire. In windy weather, the guide wire sways under the action of wind force, causing relative sliding between the spacer bar and the insulated guide wire in the novel corona-free composite structure. This causes friction between the insulation layer of the insulated guide wire and the wire clamp, which easily leads to wear of the insulated guide wire and wire breakage.

[0006] The technical solution of this utility model is as follows: A novel corona-free combined structure spacer bar includes an outer main frame, which is composed of an outer sub-frame and an inner bushing. The inner bushing consists of two independent semicircles, which are connected to the outer main frame and the outer sub-frame respectively through barbs on the inner bushing. The outer main frame and the outer sub-frame with the inner bushing are connected to each other before the line is installed by a structure similar to a hinge. After the current-draining insulator is inserted, the outer main frame and the outer sub-frame are fixed by bolts. That is, tightening the bolts at both ends during installation can tighten the current-draining insulator. The bolts and nuts at both ends are all made of a lower-layer shielding structure to prevent corona generation.

[0007] Preferably, a threaded hole is provided on one side of the outer main frame, and two identical structures are connected together by threads to form a spacer. In order to prevent the bolts from loosening under the action of external forces such as long-term vibration and wind swing, a cotter pin is embedded at the connection between the bolt and the spacer to fix it and prevent loosening.

[0008] Preferably, the inner liner is made of high-molecular synthetic rubber with excellent weather resistance, and the outer main frame and outer sub-frame are cast from high-strength aluminum alloy.

[0009] Preferably, the inner liner is integrated with the outer main frame and the outer sub-frame through the barbs of the inner liner belt, and they will not separate without strong disassembly.

[0010] The beneficial effects of this utility model are as follows:

[0011] This utility model includes an outer main frame, which is composed of an outer sub-frame and an inner bushing. The inner bushing consists of two independent semicircles, which are integrated with the outer main frame and the outer sub-frame via barbs. The outer main frame and the outer sub-frame with the inner bushing are connected as one unit before installation via a hinge-like structure. After the current-guiding insulator is inserted, the outer main frame and the outer sub-frame are fixed with bolts. That is, tightening the bolts at both ends during installation tightens the current-guiding insulator. The bolts and nuts at both ends adopt a lower-layer shielding structure to prevent corona generation. This solves the problem that the spacer bar in the existing technology has a poor positioning effect on the insulated current-guiding wire, and the current-guiding wire sways under the action of wind in windy weather. This causes relative sliding between the spacer bar and the insulated current-guiding wire in the new corona-free combination structure, and friction between the insulation layer of the insulated current-guiding wire and the clamp, which easily causes wear and tear on the insulated current-guiding wire and leads to wire breakage. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the top structure of the overall device of this utility model;

[0014] Figure 2This is a schematic diagram of the front structure of the overall device of this utility model;

[0015] Figure 3 Side view of the overall device of this utility model Figure 1 ;

[0016] Figure 4 Side view of the overall device of this utility model Figure 2 ;

[0017] In the diagram: 1. Outer main skeleton; 2. Outer secondary skeleton; 3. Inner liner; 4. Barbs. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0019] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a novel corona-free combined structure spacer bar, comprising an outer main frame 1, an outer sub-frame 2, and an inner bushing 3. The inner bushing 3 consists of two independent semicircles, which are respectively integrated with the outer main frame 1 and the outer sub-frame 2 through barbs 4 on the inner bushing 3. The outer main frame 1 and the outer sub-frame 2 with the inner bushing 3 are connected as one unit before installation of the line by a hinge-like structure. After the current-draining insulator is inserted, the outer main frame 1 and the outer sub-frame 2 are fixed by bolts. That is, tightening the bolts at both ends during installation can tighten the current-draining insulator. The bolts and nuts at both ends adopt a lower-layer shielding structure to prevent corona generation. This design solves the problem that the existing spacer bar has a poor positioning effect on the insulated current-draining wire. In windy weather, the current-draining wire sways under the action of wind force, causing relative sliding between the spacer bar and the insulated current-draining wire in the novel corona-free combined structure. This causes friction between the insulation layer of the insulated current-draining wire and the clamp, which easily leads to wear and breakage of the insulated current-draining wire.

[0020] Please see Figure 1 and Figure 2 The outer main frame 1 has a threaded hole on one side, which connects two identical structures into one unit to form a spacer. In order to prevent the bolts from loosening under the action of external forces such as long-term vibration and wind swing, cotter pins are embedded at the connection between the bolts and the spacer to fix them and prevent loosening.

[0021] Please see Figure 1 and Figure 2The inner liner 3 is made of high-polymer synthetic rubber with excellent weather resistance. The outer main frame 1 and outer sub-frame 2 are made of high-strength aluminum alloy. Different specifications of current-draining insulators all use one aluminum alloy outer frame. The inner liner 3 can be replaced according to different diameters.

[0022] Please see Figure 1 and Figure 2 The inner liner 3 is integrated with the outer main frame 1 and the outer sub-frame 2 through the barbs 4 on the inner liner 3. They will not separate without strong disassembly. When the current-draining insulator is installed at high altitude, the bolts at both ends can be tightened with an adjustable wrench to complete the assembly. The spacer bar of the entire new corona-free combined structure is compressed into one component, so the occurrence of parts falling from high altitude is basically avoided. The entire aluminum alloy outer frame weighs 1.1kg and is formed by casting.

[0023] Please see Figure 3 and Figure 4 The relationship between binary and quadruple splitting structures is that two binary splitting structures can be directly connected to a main skeleton to quickly achieve the conversion between binary and quadruple splitting.

[0024] The working principle and usage process of this utility model are as follows:

[0025] The combined structure of this novel corona-free composite spacer is easy to install and disassemble, and will not damage the insulating current-carrying wires during installation and disassembly. This novel corona-free composite spacer exhibits high reliability during operation and provides excellent protection for transmission lines, thereby ensuring the stable operation of the power system. The spacer is made of aluminum, a material with advantages such as light weight, high strength, and corrosion resistance. Therefore, it reduces weight and eddy current losses while ensuring good load-bearing capacity. The inner bushing 3 of this novel corona-free composite spacer is integrated with the outer main frame 1 and outer sub-frame 2 via barbs 4 on the inner bushing 3. Different specifications of current-carrying insulators all use a single aluminum alloy outer frame. When installing on different specifications of current-carrying insulators, only the inner bushing 3 needs to be replaced, thus effectively reducing transportation and maintenance costs. Replacement does not require the disposal of the entire device, which is environmentally friendly. The inner liner 3 of the spacer bar in this new type of corona-free combined structure is made of high-molecular synthetic rubber. This material has many advantages such as excellent electrical insulation performance, corona resistance, corrosion resistance, aging resistance, elasticity, and anti-slip properties. Therefore, it can effectively reduce the wear of the insulating lead wire caused by relative sliding between the spacer bar and the insulating lead wire in the new type of corona-free combined structure, thereby increasing the service life and greatly reducing maintenance costs.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A spacer bar of a novel non-corona combined structure, comprising an outer main skeleton (1), characterized in that, The outer main skeleton (1) is combined with the outer sub-skeleton (2) and the inner sleeve (3), wherein the inner sleeve (3) is two independent semicircles, which are combined with the outer main skeleton (1) and the outer sub-skeleton (2) through the barb (4) of the inner sleeve (3); wherein the outer main skeleton (1) and the outer sub-skeleton (2) with the inner sleeve (3) are combined through a structure similar to a "hinge" before installation of the line, and after the drainage insulator string is introduced, the outer main skeleton (1) and the outer sub-skeleton (2) are fixed through bolts, that is, the drainage insulator can be tightened by fastening the bolts at both ends during installation, and the bolts and the nuts at both ends are shielded in a lower layer to prevent corona.

2. The novel spacer bar of non-corona combined structure according to claim 1, characterized in that, The outer main skeleton (1) is provided with a threaded hole on one side, two same structures are combined through threads to form a spacer rod, and in order to prevent the bolts from loosening under the action of long-term vibration, wind swing and other external forces, split pins are embedded at the connection between the bolts and the spacer rod to fix and prevent loosening.

3. The novel spacer bar of non-corona combined structure according to claim 1, characterized in that, The inner sleeve (3) is made of high-molecular synthetic rubber with excellent weather resistance, and the outer main skeleton (1) and the outer sub-skeleton (2) are made of high-strength aluminum alloy.

4. The novel spacer bar of non-corona combined structure according to claim 1, characterized in that, The inner sleeve (3) is combined with the outer main skeleton (1) and the outer sub-skeleton (2) through the barb (4) of the inner sleeve (3).

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