Heat tracing pipe lossless replacement method, connection structure and device

Abstract

The invention discloses a heat tracing pipe lossless replacement method, connection structure and device. The heat tracing pipe lossless replacement device comprises a pipe drawing device, a replacedheat tracing pipe and a replacing heat tracing pipe, and the pipe diameter of one end of the replacing heat tracing pipe is slightly smaller than that of one end of the replaced heat tracing pipe. Theheat tracing pipe lossless replacement method further comprises the following steps that a connection step A is carried out, specifically, one end of the replaced heat tracing pipe is connected withone end of the replacing heat tracing pipe; a connection step B is carried out, specifically, the other end of the replaced heat tracing pipe is connected with the pipe drawing device; a drawing-out and replacing step is carried out, specifically, the pipe drawing device is started to draw the replaced heat tracing pipe out of an outer heat preservation layer, and the replacing heat tracing pipe enters the position before the replaced heat tracing pipe is replaced; and a dismounting step is carried out, specifically, the replaced heat tracing pipe is dismounted. The heat tracing pipes can be replaced without damaging the outer heat preservation layer, a large amount of manpower, material resources and time cost are saved, and the construction efficiency and economic benefits are remarkablyimproved.

Description

technical field [0001] The invention belongs to the technical field of steam heat tracing, and in particular relates to a nondestructive replacement method, connection structure and device of a heat tracing pipe. Background technique [0002] At present, in industries such as energy, petroleum, chemical industry, and electric power, steam heat tracing systems are often used to heat or insulate pipelines and equipment. The heat tracing pipes of the known traditional steam heat tracing systems are mainly carbon steel pipes, and high-temperature steam is used in the pipes. Although the carbon steel pipes are cheap, they have many disadvantages. Clogged and damaged valves. There are water-soluble chloride ions inside the insulation material outside the tube. If the outer sheath is damaged or the joint is not tightly sealed, it will cause the enrichment of chloride ions and cause corrosion and perforation of the heat tracing tube. In response to the existing problems, in recent...

AI Technical Summary

Problems solved by technology

However, at present, the heating pipes used by users on site and the heated pipelines or the outside of the equipment need to be insulated. If the replacement needs to be removed and re-arranged, it will take up a lot of manpower and material resources, and the cost is too high

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