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Adhesive main transformer thermometer

A technology for thermometers and protective covers, which is applied in the field of bonded main transformer thermometers, can solve problems such as damage, difficulty in waterproofing, power failure replacement, etc., and achieve the effects of being conducive to waterproofing, saving manpower, and reducing working hours

Inactive Publication Date: 2018-11-16
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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  • Adhesive main transformer thermometer
  • Adhesive main transformer thermometer
  • Adhesive 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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PUM

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Abstract

The invention provides a bonded main transformer thermometer, which includes a protective cover, an opening is provided on one side of the protective cover, a thermal resistor is provided at the opening, and a heat insulating layer is provided between the protective cover and the thermal resistor. The thermal resistance is connected with a secondary cable, and the secondary cable is connected with an adapter. Due to the adoption of the above technical scheme, the present invention has the following beneficial effects: 1. The installation method is changed, which is convenient for installation and saves manpower; 2. It is more conducive to waterproofing and can prolong the service life; 3. The structural principle of the original thermometer is changed, and the The hydraulic part is used to reduce the volume, and the hydraulic part uses a temperature transmitter to realize temperature display and alarm functions; 4. The installation position is changed, and it can be replaced with electricity, without power failure, reducing a large number of power failure operation steps and reducing working hours 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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Patent Type & Authority Patents(China)
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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