Liquid delivery pipe anti-freezing method

Abstract

The invention provides a liquid delivery pipe anti-freezing method. A double-layer pipe is adopted as a delivery pipe body. The delivery pipe body comprises an inner pipe and an outer pipe. The innerpipe contains delivered liquid. A sealed cavity is formed between the outer pipe and the inner pipe. Still air is introduced into the sealed cavity. The pipe is laid in an open environment exposed tothe sun. The outer side of the outer pipe is coated with black paint and wrapped by a heat insulation layer. The liquid delivery pipe is good in anti-freezing effect, free of anti-freezing dead angles, easy to operate and low in cost. The double-layer pipe is adopted just in the process of laying the pipe. After laying of the pipe, the pipe hardly needs to be maintained. The power-saving effect isremarkable. The liquid delivery pipe anti-freezing method is safe, practical and easy to popularize.

Description

technical field [0001] The invention relates to a liquid pipeline antifreeze method. Background technique [0002] In the northern cold regions, there has been no new breakthrough in technology for the antifreeze of short-distance liquid pipelines such as oil pipelines laid above the ground, and the traditional method is still used, that is, wrapped with a layer of thermal insulation material, or every To add an electric heating device at a certain distance, it is necessary to arrange the power line of the electric heating device, and there is an antifreeze dead angle. [0003] This traditional method can barely meet the antifreeze requirements when the quality of all materials is reliable, the qualifications of the construction personnel and the operating specifications, but for the case of poor material quality and poor construction quality, the antifreeze effect of the liquid pipeline cannot be guaranteed, and Frequent maintenance is required. Once the pipeline is frozen...

AI Technical Summary

Problems solved by technology

[0003] This traditional method can barely meet the antifreeze requirements when the quality of all materials is reliable, the qualifications of the construction personnel and the operating specifications, but for the case of poor material quality and poor construction quality, the antifreeze effect of the liquid pipeline cannot be guaranteed, and Frequent maintenance is required. Once the pipeline is frozen, it may not be thawed throughout the winter

As we all know, no matter what kind of pipe expansion after freezing, it is easy to break, at least it will reduce the service life of the pipe, and more seriously, it will cause the liquid pipeline to transport liquid