Reinforcing device for preventing T-connection branch line of 35 kilovolt and below power transmission line from being broken and falling off

Abstract

The utility model provides a reinforcing device for preventing a T-connection branch line of a 35 kilovolt and below power transmission line from being broken and falling off, which comprises a small lead (10c) and two auxiliary clamp bodies (8), and the two auxiliary clamp bodies (8) are detachably connected to two ends of the small lead (10c) through auxiliary clamp body small lead mounting holes (7). After the reinforcing device is connected with the main line and the branch line of the power grid, the technical problem that the T-connection branch line is broken and falls off can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission line drainage, in particular to a reinforcement device for preventing T-connected branch lines of 35 kV and below power transmission lines from breaking and falling off. Background Art

[0002] The step-up transformer of the new energy wind turbine generator set needs to be connected to the transmission line. The primary electrical equipment connection generally uses a T-type terminal clamp. The existing T-type terminal clamp is generally a split structure, that is, it is divided into two parts from the middle. The two parts are closed in the working state. The horizontal part at the upper end forms the main line clamp body, and the plumb part at the lower end forms the branch line clamp body. After the main line clamp body is matched with the main line, it is fixed at both ends by U-shaped bolts. After the two halves of the branch line clamp body are closed and contain the branch line, a complete branch line clamp body is formed. The branch line clamp body is fastened by 4 bolts. This T-type terminal clamp has a simple structure, but in the extremely harsh environment of wind power generation projects, under the influence of wind and weather for a long time, the wires at the branch line connection of the T-type terminal clamp are prone to mechanical fatigue, causing the T-connected branch line to break or fall off. When the branch line needs to be restored to operation, the entire transmission line must be disconnected to replace the branch line clamp body or reconnect it, which affects the overall output and power generation economic efficiency and harms the stable operation of the equipment. The Chinese patent with the authorization publication number CN204597016 U, named a T-type terminal clamp, discloses a technical solution including an insulating clip, which is in the shape of a "T", with a wiring head at the two horizontal ends of the insulating clip, and a lead connector at the lower vertical end of the insulating clip; grooves are provided on the wiring head and the lead connector; metal guides and corresponding bolt fixing holes are provided on both sides of the groove, and the metal guides are connected by wires provided inside the insulating clip. Although the technical problems of low tensile strength and high danger caused by line wiring have been overcome, in the extremely harsh environment of wind power generation projects, the technical problems of frequent disconnection and falling of transmission line branches cannot be effectively solved. Utility Model Content

[0003] In view of the above problems, the utility model provides a reinforcement device for preventing T-connected branch lines of 35 kV and below power transmission lines from breaking and falling off.

[0004] The technical solution of the utility model is a reinforcement device to prevent the T-connected branch line of a 35 kV and below power transmission line from breaking and falling off, comprising a small lead, two auxiliary clamps, and the two auxiliary clamps are detachably connected to the two ends of the small lead through the small lead mounting holes of the auxiliary clamps, one of the auxiliary clamps detachably connected to the main line of the power grid is the main line auxiliary clamp, and the other auxiliary clamp detachably connected to the branch line of the power grid is the branch line auxiliary clamp.

[0005] Furthermore, the two auxiliary clamping bodies include two front and rear clamping plates, each clamping plate has arc grooves on both sides in the length direction, and the two clamping plates are fixed in the middle by a bolt and nut assembly.

[0006] Furthermore, the embedded joints in the auxiliary clamp body are all wrapped with aluminum cladding.

[0007] Furthermore, the small lead is in an arc shape.

[0008] Since a small lead is added to the original T-type wiring clamp, the two ends of the small lead are fixed with auxiliary clamps and then connected to the main line and branch line of the power grid, the utility model has the following beneficial effects:

[0009] 1. Increase the wind resistance of the overall branch line, slow down the swing and floating of the branch line, enable the branch line to operate stably in bad weather, improve the wind resistance, reduce the mechanical fatigue of the branch line, and effectively prevent the T-connected branch line of the transmission line from breaking and falling off.

[0010] 2. Even if the T-connected branch line breaks or falls off, the small lead wire can play a drainage role.

[0011] 3. The invention has a simple and light structure, is easy to install and has strong practicality.

[0012] 4. After installation, reduce the number of equipment shutdowns, reduce the scope of power outages and economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0014] Figure 1 It is a structural diagram of the utility model.

[0015] Figure 2 This is a schematic diagram of the installation of the utility model with T-type wiring clamps, main lines and branch lines.

[0016] Among them, 1. front clamp of auxiliary clamp; 2. rear clamp of auxiliary clamp; 3. fixing bolt of auxiliary clamp; 4. fixing nut of auxiliary clamp; 5. spring piece of auxiliary clamp; 6. gasket of auxiliary clamp; 7. small lead installation hole of auxiliary clamp; 8. auxiliary clamp; 9. main line clamp of T-type wiring clamp; 10a. main line; 10b. branch line; 10c. small lead; 11. U-shaped fastener; 12. branch line clamp of T-type wiring clamp DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0018] Unless otherwise defined, technical or scientific terms used herein shall have the common meanings understood by a person having ordinary skills in the field to which this application belongs.

[0019] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 , Figure 2 As shown, a reinforcement device for preventing the T-connected branch line of a 35 kV or lower transmission line from breaking and falling off comprises a small lead 10c, two auxiliary clamps 8, and the two auxiliary clamps 8 are detachably connected to the two ends of the small lead 10c through the auxiliary clamp small lead installation hole 7, wherein one of the auxiliary clamps 8 detachably connected to the main line 10a of the power grid is the main line auxiliary clamp, and the other auxiliary clamp 8 detachably connected to the branch line 10b of the power grid is the branch line auxiliary clamp. The horizontal part of the T-type wiring clamp body is the main line clamp 9, and the vertical part of the T-type wiring clamp body is the branch line clamp 12. The main line clamp 9 is fixed at both ends by U-shaped bolts 11 after being matched with the main line 10a, and the branch line clamp 12 is fixed by four fixed line bolts. Because of the addition of this auxiliary setting, the branch line has more support, the wind resistance of the overall branch line is increased, the swing and floating of the branch line is slowed down, the branch line can operate stably in bad weather, the wind resistance is improved, the mechanical fatigue of the branch line is reduced, and the T-connected branch line of the transmission line is effectively prevented from breaking and falling off. The small lead can also be used as a backup branch line.

[0021] Furthermore, the auxiliary clamp 8 includes a front clamp 1 and a rear clamp 2. Each clamp has arc grooves on both sides of the length direction. The two clamps are fixed in the middle by a bolt 3 nut 4 assembly, which can better fix the main line 10a, branch line 10b, and small lead 10c on the auxiliary clamp 8.

[0022] Furthermore, a gasket 6 is provided between the clamping plate and the nut to increase the contact area and enhance the fixing effect.

[0023] Furthermore, a spring sheet 5 is provided on the gasket 6 to further enhance the fixing effect.

[0024] Furthermore, the embedded joints in the auxiliary clamp body 8 are all wrapped with aluminum, which can improve the transmission efficiency, mechanical strength and durability of the main line 10a, the branch line 10b and the small lead line 10c.

[0025] Furthermore, the small lead 10c is arc-shaped, which can reduce wind impact and increase stability.

[0026] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application. The protection scope of the present application is determined by the appended claims.

Claims

1. A reinforcement device for preventing the T-connected branch line of a 35 kV or lower transmission line from breaking or falling off, characterized in that The invention comprises a small lead wire (10c), two auxiliary clamps (8), the two auxiliary clamps (8) being detachably connected to two ends of the small lead wire (10c) through auxiliary clamp small lead wire mounting holes (7), one of the auxiliary clamps (8) detachably connected to a power grid main line (10a) is a main line auxiliary clamp, and the other auxiliary clamp (8) detachably connected to a power grid branch line (10b) is a branch line auxiliary clamp.

2. A reinforcement device for preventing the T-connected branch line of a 35 kV or lower power transmission line from breaking and falling off according to claim 1, characterized in that The auxiliary clamping body (8) comprises a front clamping plate (1) and a rear clamping plate (2). Each clamping plate has arc grooves on both sides in the length direction. The two clamping plates are fixed in the middle by a bolt (3) and nut (4) assembly.

3. A reinforcement device for preventing the T-connected branch line of a 35 kV or lower power transmission line from breaking and falling off according to claim 2, characterized in that A gasket (6) is arranged between the clamping plate and the nut.

4. A reinforcement device for preventing the T-connected branch line of a 35 kV or lower power transmission line from breaking and falling off according to claim 3, characterized in that A spring sheet (5) is arranged on the gasket (6).

5. A reinforcement device for preventing a T-connected branch line of a 35 kV or lower power transmission line from breaking or falling off according to any one of claims 1 to 4, characterized in that The embedded joints in the auxiliary clamp body (8) are all wrapped with aluminum.

6. A reinforcement device for preventing a T-connected branch line of a 35 kV or lower power transmission line from breaking or falling off according to any one of claims 1 to 4, characterized in that The small lead (10c) is in an arc shape.

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