An anti-heating device for a diversion plate and a power transmission line with the device

Abstract

The invention relates to the technical field of power transmission lines, and discloses a drainage plate heating prevention device and the power transmission line with the same. The power transmission line comprises a tower, a jumper wire, a drainage plate heating prevention device body, a strain clamp and a main guide wire; and the drainage plate heating prevention device is characterized in that the drainage plate heating prevention device body is arranged at one side of the strain clamp and is connected and fixed to the jumper wire and the main guide wire. The jumper wire is connected through the drainage plate heating prevention device body, so that most current which flows through the jumper wire, the strain clamp and a drainage terminal board can be shunted; and heating of the strain clamp is reduced. An over-temperature warning monitor component is also arranged in the drainage plate heating prevention device, and a hidden trouble point is overhauled in a targeted manner, so that the running safety and reliability of the power transmission line are further improved.

Description

technical field [0001] The invention relates to the technical field of power transmission lines, in particular to a device for preventing overheating of a power transmission line diversion plate. Background technique [0002] In the power transmission line, the crimping type strain clamp is usually used to connect the main conductor and the jumper. In the structure of connecting the jumper through the drainage terminal board, since the material of the jumper clamp is usually aluminum with low hardness (generally Use pure aluminum), after the compression tube of the drainage terminal board is crimped with the wire, it is easy to cause thermal expansion and contraction of the crimping point due to the influence of the environment and operating temperature, resulting in an increase in contact resistance. The jumper clamp has the same problem; in addition, because the connection between the strain-resistant clamp drain terminal board and the jumper clamp adopts a bolt crimping s...

AI Technical Summary

Problems solved by technology

[0002] In the power transmission line, the crimping type strain clamp is usually used to connect the main conductor and the jumper. In the structure of connecting the jumper through the drainage terminal board, since the material of the jumper clamp is usually aluminum with low hardness (generally Use pure aluminum), after the compression tube of the drainage terminal board is crimped with the wire, it is easy to cause thermal expansion and contraction of the crimping point due to the influence of the environment and operating temperature, resulting in an increase in contact resistance. The jumper clamp has the same problem; in addition, because the connection between the strain-resistant clamp drain terminal board and the jumper clamp adopts a bolt crimping structure, and the terminal board is made of pure aluminum material with low hardness, the jumper wire and the main wire The vibration generated by the swing directly leads to the loosening of the crimping point, resulting in a contact resistance greater than the design requirement; this connection structure often causes overheating of the jumper connection point and the tension clamp, which threatens the safe operation of the transmission line. During operation, when the heat of the tension clamp exceeds the design requirements, technicians cannot accurately and timely find the fault point, which affects the efficiency of line maintenance

[0003] figure 1 It is a schematic diagram of the conventional jumper structure of the transmission line in the prior art, and the crimping type strain clamp is connected between the main wire and the jumper, figure 2 It can be seen that there are 3 hot spots at one jumper, that is, there are a total of 6 hot spots at both ends of the jumper symmetrically in the transmission line, and the jumper is added. The probability of heating at the connection point. During long-term use, the drainage terminal board and the crimping point will overheat, which will affect the safe operation of the transmission line.

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