Novel expander for mutual inductor capable of reliably operating in power grid

Abstract

The invention belongs to the technical field of expanders, and particularly relates to a novel expander for a mutual inductor capable of reliably operating in a power grid, which comprises a shell wall, an upper cover, an oil level inspection window and a mounting assembly, the upper cover is arranged at the top of the shell wall; a mounting groove is formed in the inner wall of the shell wall; the oil level inspection window is arranged in the mounting groove; the installation assemblies are arranged on the inner wall of the shell wall and located on the two sides of the installation groove. The mounting assembly comprises a supporting column, a sliding plate, a spring, a supporting rod and a fixing plate. Sliding grooves are symmetrically formed in the inner walls of the two sides of the mounting groove. The supporting column is arranged in the sliding groove, and the two ends of the supporting column are fixedly connected with the side wall of the sliding groove. The sliding plate is slidably connected to the outer wall of the supporting column. By arranging the mounting assembly, the oil level inspection window and the shell wall can be conveniently combined and mounted, so that the mounting efficiency of the oil level inspection window is improved, and relatively accurate oil level judgment can be conveniently provided for operation and maintenance personnel.

Description

Technical field [0001] The present invention belongs to the field of expansioner, and is specifically a new type of expander for transformers that operate reliably in the grid. Background technique [0002] The temperature rise and ambient temperature of the oil-immersed transformer hanging network will change its internal oil volume. At this time, the main body volume of the expander has changed accordingly, and it functions as a volume compensation. [0003] The oil level change at the time of operation of the transformer is observed by the oil level inspection window of the expander to determine whether the transformer is operating normally. [0004] In the prior art, the expander oil level inspection window is narrow. When observing the oil level, the oil level inspection window must be positive, and the oil level inspection window is installed in combination with the shell wall, and the oil level inspection window is easily installed due to the lack of mounting mechanism. Th...

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Problems solved by technology

[0006] In order to make up for the shortcomings of the existing technology, the oil level inspection window of the expander is narrow, and the oil level inspection window must be directly facing the oil level inspection window when observing the oil level, and when the oil level inspection window is combined with the shell wall, due to the lack of installation mechanism, it is easy to make The installation position of the oil level inspection window is not firm. If the scale line is used when the installation error is large, the operation and maintenance personnel will cause a large deviation in the description of the oil level. new expander

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