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Plying-up type main transformer thermometer

A technology of thermometer and protective cover, applied in the field of fitted main variable thermometer, can solve problems such as damage, difficulty in waterproofing, power failure and replacement, etc., and achieve the effects of being beneficial to waterproofing, saving manpower and reducing working time.

Inactive Publication Date: 2017-02-22
STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Disadvantages: Because it is on the top of the big cover of the transformer, it is difficult to achieve absolute waterproof due to structural reasons, and it is often damaged due to water ingress; in addition, if the thermometer is damaged, it must be replaced after a power failure because it is close to the live part

Method used

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  • Plying-up type main transformer thermometer
  • Plying-up type main transformer thermometer
  • Plying-up type main transformer thermometer

Examples

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Embodiment Construction

[0032] Example: such as figure 1 , 2 As shown, the bonding type main transformer thermometer includes a plastic protective cover 20, an opening is provided on one side of the protective cover 20, a thermal resistor 25 is provided at the opening, and a thermal resistor 25 is provided between the protective cover 20 and the thermal resistor 25. The thermal insulation layer 26, the thermal resistance 25 is connected with a secondary cable 23, and the secondary cable 23 is connected with an adapter.

[0033] The heat insulation layer 26 can reduce local heat dissipation, so that the measured temperature is closer to the actual top layer oil temperature.

[0034] The heat insulation layer 26 is made of foam plastics and fills the entire protective cover 20 . The heat insulation layer 26 is provided with a groove, and the thermal resistor 25 is arranged in the groove.

[0035] The protective cover 20 is rectangular, and the protective cover 20 is provided with a gap 24 for allowin...

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Abstract

The invention provides a plying-up type main transformer thermometer. The plying-up type main transformer thermometer comprises a protection cover, wherein an opening is formed in one side of the protection cover, a thermal resistor is arranged on the opening, a thermal insulating layer is arranged between the protection cover and the thermal resistor, the thermal resistor is connected to a secondary cable, and the secondary cable is connected to an adaptor. According to the technical scheme, the plying-up type main transformer thermometer has the advantages that an installation method is changed, therefore, installation is convenient and manpower is saved; the plying-up type main transformer thermometer is more beneficial to waterproofing and capable of prolonging service life; a structural theory of a traditional thermometer is changed, a hydraulic pressure part is abolished, so that the volume is reduced, and the hydraulic pressure part is replaced by a temperature transmitter to achieve temperature display and warning functions; an installation site is changed so that replacement with electricity can be achieved and power cut is no longer needed, therefore, a large number of power cut operating steps are reduced, and working time is shortened by 80%.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to a bonding type main transformer thermometer. Background technique [0002] At present, the plug-in main transformer oil surface temperature controller (main transformer thermometer) is used on the power transformer. The part inserted into the main transformer thermometer is installed on the large cover of the transformer, which is isolated from the main transformer body. The depth is about 15cm. Add an appropriate amount of transformer oil to the variable thermometer to transfer heat, and then insert the temperature bulb of the main variable thermometer. [0003] Advantages: Because it is directly inserted into the top of the transformer cover, the temperature measurement is accurate. It has a temperature scale and pointer indication, which can be easily observed and read. It is also equipped with a temperature output contact, which can be used to send a high oil temperature s...

Claims

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Application Information

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IPC IPC(8): G01K7/18G01K1/14G01K1/08
CPCG01K1/08G01K1/14G01K7/183
Inventor 崔超孔令京王雪梅王云枫张伟丛文益段继来崔建同任永铁于永亮陈复艳王环高萌程泽群
Owner STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO
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