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Inflatable type on-load tap changer for transformer

A voltage regulating switch, transformer technology, applied in transformers, variable transformers, transformer/inductor components and other directions, can solve problems such as volume reduction, and achieve the effects of volume reduction, high safety, long service life and long maintenance period

Pending Publication Date: 2019-03-29
张宏强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem that the oil-filled on-load tap changer is used for dry-type transformers, and at the same time, compared with the existing vacuum tube arc-extinguishing on-load tap-changer used for dry-type transformers, the volume is greatly reduced, the installation is convenient, and the price is cheap

Method used

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  • Inflatable type on-load tap changer for transformer
  • Inflatable type on-load tap changer for transformer

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 , 2 As shown, a gas-filled transformer on-load tap changer, including: insulating cylinder 1, fixed contact 2, main shaft 3, driving mechanism 4, lubricant 5, upper cover 6, switching contact 7, transition resistor 8, transition The contacts 9, the lower cover 10, the air-filled space 11, and the casing 12 of the driving mechanism.

[0020] The lower part of the insulating cylinder 1 is sealed and connected with the lower cover 10, the upper part of the insulating cylinder 1 is sealed and connected with the driving mechanism casing 12, and the upper part of the driving mechanism casing 12 is sealed and connected with the upper cover 6 through a flange; The fixed contact 2, the surface of the fixed contact 2 is coated with lubricant 5; the main shaft 3 is set inside the insulating cylinder 1, the bottom of the main shaft 3 is ...

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Abstract

The invention discloses an inflatable type on-load tap changer for a transformer. The on-load tap changer includes an insulating cylinder, fixed contacts, a main shaft, a drive mechanism, lubricants,an upper cover, switching contacts, transition resistors, transition contacts, a lower cover, an inflation space, and a drive mechanism shell; The inflatable type on-load tap changer fully utilizes non-flammability, good insulation performance and arc extinguishing performance of a sulfur hexafluoride (SF6) gas, and the on-load tap changer produced by the invention has the following characteristics of being not easy to catch fire and high in safety, being long in service life and repaor cycle, being small in land occupation area and convenient to install and operate, and being excellent in performance and reliable in operation.

Description

technical field [0001] The invention relates to the technical field of manufacturing transformer accessories in power systems, and in particular provides an on-load tap changer for an air-filled transformer, which is suitable for oil-immersed transformers and dry-type transformers. Background technique [0002] At present, all on-load tap-changing transformers with load-regulated voltage in the power system are equipped with on-load tap-changing switches. There are two main types of OLTCs in use today: [0003] One is to fill the transformer with insulating oil, and use the transformer insulating oil for insulation, arc extinguishing and heat dissipation. Its advantages are simple structure and reliable operation. This on-load tap changer is a traditional structure and is still widely used today. Its biggest disadvantage is that the gases (such as hydrogen, acetylene, methane) and free carbon generated when the transformer insulating oil is extinguished arc reduce the ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/00H01F29/04
CPCH01F27/00H01F29/04
Inventor 张宏强阮琳
Owner 张宏强
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