Transformer temperature controller with external heating elements

A technology for heating elements and transformers, which is applied to transformer/inductor parts, electrical components, and temperature control by electric means, which can solve the changes affecting the displacement of the push rod, the accuracy of detection, the stiffness of the push rod and the hard force. and other problems to achieve the effect of avoiding local overheating, simple structure and high precision

Active Publication Date: 2010-12-15
大连世有电力科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing electric heating elements are all placed inside the copper body, the heat dissipated overheats the inside of the copper body, resulting in changes in the stiffness and hardness of the push rod, which in turn affects the displacement of the push rod, and this change varies with the current passing through the electric heating element. And change, difficult to compensate, directly affect the accuracy of detection
The low accuracy of the transformer thermostat has become a technical problem that people have been eager to solve but have not been successful

Method used

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  • Transformer temperature controller with external heating elements
  • Transformer temperature controller with external heating elements

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Embodiment Construction

[0007] The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. Such as figure 1 Shown: Same as the prior art, there is a sensing conduit 1 and a copper body 2 connected to the sensing conduit 1, a push rod 3 is arranged at the other end of the copper body 2, and a push rod 3 is arranged at the middle part of the sensing conduit 1. A heating pipe body 4 with high temperature resistance, such as a copper pipe, is connected in series, and an electric heating element 5, such as a resistance wire, is arranged outside the heating pipe 4 or built in. connect.

[0008] work process:

[0009] The current of the transformer winding is output by the converter to the electric heating element 5 through the wire, and the electric heating element 5 heats the temperature-sensing medium in the heating tube body 4, and the volume of the temperature-sensing medium changes with the heating current. The push rod 3 produces...

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Abstract

The invention discloses a transformer temperature controller with external heating elements, which comprises a sensing guide tube (1) and a copper body (2) connected with the sensing guide tube (1), wherein, the other end of the copper body (2) is provided with a push rod (3); heating tubes (4) are connected on the sensing guide tube (1) in series; and electric heating elements (5) are arranged on the heating tubes (4). In the invention, a temperature-sensing medium is heated outside the copper body to avoid a local overheating atmosphere of the copper body and maintain consistent rigidity and hardness of the push rod under different load conditions, and displacement of the push rod is only related to swelling capacity of the temperature-sensing medium, thus guaranteeing high precision ofthe temperature controller. The transformer temperature controller has simple structure but solves the technical problem which is always expected to be solved but is not successful.

Description

Technical field: [0001] The invention relates to a transformer temperature controller, in particular to a transformer temperature controller with simple structure and high precision with an external heating element. Background technique: [0002] The transformer temperature controller needs to detect the transformer winding and oil surface temperature. The main structure of the transformer winding thermostat is a converter connected to the transformer current transformer. The output of the converter is connected to the electric heating element (resistance wire) built in the copper body, and the upper end of the copper body is provided with a push rod. , the other end is connected to the sensing conduit (capillary) placed in the temperature sensing package, and the sealed system composed of the temperature sensing package, sensing conduit and copper body is filled with temperature sensing medium. The temperature sensed by the temperature-sensing package and the heating eleme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/19H01F27/00
Inventor 王世有
Owner 大连世有电力科技有限公司
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