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Temperature measuring resistor device for transformer and protection cover thereof

A temperature-measuring resistance and transformer technology, which is applied to transformer/inductance components, measuring devices, and electrical devices, etc., can solve the problems of reducing the safe operation coefficient of transformers, achieve simple and ingenious structure, improve service life, and facilitate installation Effect

Active Publication Date: 2013-02-20
CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, before the transformer stops running and replaces the temperature measuring resistor, it is impossible to monitor the temperature of the transformer oil in real time, which greatly reduces the safe operation coefficient of the transformer.

Method used

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  • Temperature measuring resistor device for transformer and protection cover thereof
  • Temperature measuring resistor device for transformer and protection cover thereof
  • Temperature measuring resistor device for transformer and protection cover thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (Example 1, the protective cover of the transformer temperature measuring resistance device)

[0040] See Figure 1 to Figure 3The protective cover of the transformer temperature measuring resistance device in this embodiment includes a housing 1 and a mounting piece 2 connected to the housing 1; The shell 1 is a spherical crown with an opening downwards, and is made of stainless steel. The mounting piece 2 is arranged horizontally along the left and right directions, and is made of stainless steel plate material, including a rectangular plate portion 21, a first arcuate plate portion 22 connected to the left side of the rectangular plate portion 21 from the left, and a first arcuate plate portion 22 connected to the rectangular plate portion 21 from the right. The second arcuate plate portion 23 on the right side. The rectangular plate portion 21 is provided with a mounting through hole 24 along the vertical axis of the central axis, and the vertical axis of the moun...

Embodiment 2

[0041] (Example 2, transformer temperature measuring resistance device)

[0042] See Figure 4 , The transformer temperature-measuring resistance device of this embodiment includes a transformer casing 3, a temperature-measuring resistance 4, a rubber sealing ring 5, and the protective cover 10 (hereinafter referred to as the protective cover) of the transformer temperature-measuring resistance device obtained in Example 1.

[0043] The transformer shell 3 is provided with a shell main body 30, a temperature measuring resistance mounting pile 31 and a temperature measuring box 32; the shell body 30 of the transformer shell 3 is provided with a circular temperature measuring port with an upward opening, and the temperature measuring resistance mounting pile 31 is up and down. It is cylindrical in shape, and the central through hole of the temperature measuring resistance mounting pile 31 is an inner screw hole. The temperature measuring resistance mounting pile 31 is sealed and...

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Abstract

The invention relates to a protection cover of a temperature measuring resistor device for a transformer. The protection cover comprises a case and a mounting plate connected with the case, wherein the case has a spherical cap form facing downwards; the mounting plate has a plate form; the mounting plate is located on the edge of the bottom of the case and on the middle part of the case in the anterior-posterior direction; and a mounting via-hole is formed on the mounting plate. The invention also relates to a temperature measuring resistor device for the transformer. The temperature measuring resistor device for the transformer comprises a transformer case, a temperature measuring resistor, a rubber seal ring, and the abovementioned protection cover, wherein a temperature measuring resistor mounting pile is arranged on the transformer case; the rubber seal ring is arranged above the temperature measuring resistor mounting pile; the protection cover is placed above the rubber seal ring through the mounting plate thereof; and the temperature measuring resistor extends into the transformer case after passing through the mounting hole of the mounting plate and the central via-hole of the rubber seal ring from top to bottom, and is connected with the temperature measuring resistor mounting pile through screw threads, so as to fix the temperature measuring resistor on the transformer case. Accordingly, the protection cover can protect the rubber seal ring from being exposed to the sun and rain, thereby prolonging the service life of the rubber seal ring.

Description

technical field [0001] The invention relates to a temperature-measuring resistance device and a protective cover for a transformer, in particular to a temperature-measuring resistance device and a protective cover for a transformer of 110kV and above. Background technique [0002] On transformers of 110kV and above, one or more temperature-measuring resistors are generally installed, and the temperature-measuring resistors monitor the oil temperature of the transformer in real time. When the transformer oil temperature rises abnormally and exceeds the set value, the transformer measurement and control device will send out an alarm signal. The normal oil temperature of the transformer is very important to the operation of the transformer, and the abnormal rise of the oil temperature will affect the normal operation of the transformer. [0003] See image 3 , the temperature measuring resistor 4 on the existing transformer is extended by the resistance rod 43 of the temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/00G01K1/08
CPCH01F27/00H01F27/402G01K1/08G01K7/16
Inventor 蒋越彭宏芬朱建敏程时平
Owner CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER
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