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Temperature Controller Compensation Device for Large Power Transformer

A technology of power transformers and compensation devices, which is applied to measuring devices, instruments, thermometers, etc., can solve problems such as non-temperature sensing parts and measurement errors, and achieve the effects of simple manufacturing process, strong reliability, and high temperature compensation accuracy

Inactive Publication Date: 2015-11-25
SHENZHEN TESTECK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the capillary and bellows of the temperature measuring device are placed outside the transformer, the working fluid filled inside will be affected by the temperature of the surrounding environment, resulting in the temperature indicated by the pointer not being the real temperature of the temperature sensing part, resulting in measurement errors

Method used

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  • Temperature Controller Compensation Device for Large Power Transformer
  • Temperature Controller Compensation Device for Large Power Transformer

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] Embodiments of temperature compensation devices for transformers in the prior art, such as figure 1 As shown, it includes a cylinder 23, a bellows 21 disposed in the cylinder 23, a displacement nut 22, a working fluid 24 filling the cylinder 23, a spring 28, a push rod 29, and a cylinder cover 27 for sealing the cylinder 23 , and the soldering 26 of the bellows 21 welded on the cylinder 23, the capillary 25, 30 and the cylinder 23 are welded together by silver brazing. When the ambient temperature changes, the working medium 24 filled in the cylinder 23 will expand with heat and contract...

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Abstract

The invention discloses a temperature controller compensation device for a large-sized power transformer. The temperature controller compensation device for the large-sized power transformer comprises a cylinder body (2), a connecting rod (1), a leaf spring (3), an adjusting nut (4), a spring (5), a cylinder body cover (6) and a push rod (7), wherein a containing groove (8) is formed in the cylinder body (2), the connecting rod (1) is arranged at the bottom of the cylinder body (2), the leaf spring (3) is arranged on the innermost portion of the containing groove (8) of the cylinder body (2), the free length of the leaf spring (3) changes along with changes of the temperature in a linear mode, one end of the adjusting nut (4) is connected with the interior of the leaf spring (3) in a sleeved mode, the spring (5) is connected with the other end of the adjusting nut (4) in a rotary mode, the cylinder body cover (6) seals the containing groove (8), a hole (9) is formed in the cylinder body cover (6), and the push rod (7) is connected with the adjusting nut (4) in a threaded mode, and penetrates out of the hole (9) of the cylinder body cover (6). Due to the fact that the free length of the leaf spring changes along with the changes of the temperature, the leaf spring pushes the adjusting nut to drive the push rod to contract or stretch out, the purpose of temperature compensation is achieved, and the temperature controller compensation device for the large-sized power transformer is simple in structure, simple in manufacturing technology, good in reliability, high in accuracy of temperature compensation, high in qualified rate and low in cost.

Description

technical field [0001] The invention relates to a temperature compensation device, in particular to a temperature controller compensation device for a large power transformer. Background technique [0002] As we all know, oil-immersed transformers, especially large-scale power transformers, will generate a lot of heat during work, causing the internal temperature of the transformer to rise. When the temperature is too high, it is easy to cause transformer accidents. Therefore, a set of temperature measuring devices is often equipped , used to monitor the internal temperature of the transformer. The temperature measuring devices currently used are all inserted into the top of the transformer oil tank through a probe. The working medium filled in the probe causes the internal pressure to change due to the temperature change, and is transmitted to the bellows through the capillary, causing the bellows to shift and driving the shaft to rotate. , the temperature is indicated by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K5/50
Inventor 王波
Owner SHENZHEN TESTECK TECH
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