Transformer rectangular pipe opening blocking plate sealing structure and sealing method

Abstract

The invention relates to a transformer rectangular pipe opening blocking plate sealing structure and a sealing method and belongs to the technical field of production of transformers. According to the technical scheme, the transformer rectangular tube opening blocking plate sealing structure comprises hex nuts (1), a rectangular steel pipe, a rubber cushion plate (3), a blocking plate (4) and fastening bolts (5). The hex nuts (1) are fixed to the outer sides of four pipe walls at the opening of the rectangular steel pipe (2). The blocking plate is in a hexagon shape and connected with the rectangular steel pipe (2) through the fastening bolts (5) and the hex nuts (1). The rubber cushion plate is arranged between the blocking plate (4) and the connected rectangular steel pipe. The rubber cushion plate (3) is rectangular and matched with the end face pipe opening of the rectangular steel pipe (2) in size. The transformer rectangular tube opening blocking plate sealing structure has the advantages that the effect of sealing the pipe opening of the rectangular pipe of the transformer is good, oil leak of the transformer is avoided, the materials are greatly saved, the working efficiency is improved and labor intensity of workers is relieved.

Description

technical field [0001] The invention relates to a sealing structure and a sealing method of a rectangular nozzle blocking plate of a transformer, belonging to the technical field of transformer production. Background technique [0002] The oil pipeline system outside the transformer oil tank is equipped with a transformer rectangular pipe, and the main body of the rectangular pipe is a thick-walled rectangular steel pipe. Since the inner wall needs to be inspected and painted, it is necessary for the two ports of the thick-walled rectangular steel pipe to be opened before the final assembly. At present, the closed structure of the rectangular nozzle of the transformer generally adopts a welded flange. In the subsequent assembly process, the end face of the flange is sealed with a rubber sealing ring and a round cover plate. After tightening the seal, it becomes a semi-permanent round pipe end seal. This kind of sealing structure is that the nut space between the flange pla...

AI Technical Summary

Problems solved by technology

This kind of sealing structure is that the nut space between the flange plate and the round cover plate is small, and it takes time and effort to rotate the wrench. If the space at the nut is increased, the diameter of the flange plate needs to be increased, which consumes raw materials, gas cutting fuel, and machining. Tools, drills and auxiliary materials; Second, after the flange is welded, it is necessary to carry out weld inspection and leak test, which is very cumbersome

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