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Converter transformer network side sleeve pull rod system

A commutation and tie rod technology, applied in transformer/inductor parts, transformer/inductor coils/windings/connections, electrical components, etc., can solve internal faults of transformers, system outages, current-carrying base plates and terminal blocks The problem of loose connection, etc., can reduce the possibility of failure, stabilize the tie rod system, and reduce the assembly cost.

Active Publication Date: 2020-09-15
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, the rod-type bushing has caused many major problems in the power system, causing transformer explosions, fires, and system shutdowns.
[0003] Investigations and studies have shown that due to thermal expansion and contraction of the tie rod system itself, the tension will change, which will lead to the loosening of the bushing rod system and the terminal block, making the connection between the current-carrying bottom plate and the terminal block loose, causing discharge at the bottom of the bushing The arc is drawn, a large amount of gas is generated, and finally the transformer bushing is discharged, causing the internal fault of the transformer

Method used

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  • Converter transformer network side sleeve pull rod system
  • Converter transformer network side sleeve pull rod system

Examples

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 and figure 2 As shown in the example, a bushing tie rod system on the side of the converter grid disclosed in this embodiment includes a cylindrical tie rod 1, which is composed of three sets of rods connected by connecting rods. The tie rod 1 is made of steel, and the length of the tie rod 1 is 7278mm; the bottom of the tie rod 1 is connected with the wiring device 6, the top of the tie rod 1 is connected with the fixing device 9, the fixing device 9 includes a general cap 91 and the top nut 92; the bottom of the fixing device 9 is fixedly connected with a vertical compensation aluminum tube 2 , the compensation aluminum tube 2 is sleeved on the periphery of the tie rod 1, and the height of the compensation aluminum tube 2 is 3308mm.

[0026] A number of current-carrying bottom plates 3 are evenly installed on the t...

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Abstract

The invention relates to a converter transformer network side sleeve pull rod system, which comprises a pull rod, wherein the bottom of the pull rod is connected with a wiring device, the top of the pull rod is connected with a fixing device, and the bottom of the fixing device is connected with a vertically-arranged compensation aluminum pipe; the top of the wiring device is provided with a current-carrying bottom plate, the current-carrying bottom plate is connected with a positioning compensation pipe, the periphery of the pull rod is sleeved with the positioning compensation pipe, a compensation steel pipe used for transmitting pressure applied by the compensation aluminum pipe to the positioning compensation pipe is hung on the positioning compensation pipe, and the compensation aluminum pipe abuts against the compensation steel pipe. By the adoption of the technical scheme, the current-carrying bottom plate and the wiring device are combined more tightly, the situation that the pull rod and the wiring device get loose due to expansion caused by heat and contraction caused by cold of the pull rod is reduced, a pull rod system is more stable, and the possibility of faults occurring in the transformer is reduced.

Description

technical field [0001] The invention relates to the technical field of high-voltage maintenance, and in particular to a bushing tie rod system on the side of a transformer grid. Background technique [0002] There are generally guide rod type, cable type and tie rod type for converter transformer side bushings, among which tie rod type bushings are widely used in power systems because they are easy to transport and install. However, in recent years, tie-rod bushings have caused many major problems in the power system, causing transformer explosions, fires, and system outages. [0003] Investigations and studies have shown that due to thermal expansion and contraction of the tie rod system itself, the tension will change, which will lead to the loosening of the bushing rod system and the terminal block, making the connection between the current-carrying bottom plate and the terminal block loose, causing discharge at the bottom of the bushing The arc is drawn, a large amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/29H01F27/00
CPCH01F27/00H01F27/29
Inventor 韦晓星张晋寅卢文浩
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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