Active compensation heat preservation method and pipeline heat preserving structure

Abstract

The invention provides an active compensation heat preservation method and a pipeline heat preserving structure for implementing the method, wherein the method and the structure are mainly used for heat preservation of hot gas conveying pipelines. An electromagnetic induction coil is arranged between the surface of a pipeline and a heat-preserving layer or in the heat-preserving layer of the pipeline, the pipeline serves as an electromagnetic induction heating body, pipeline heat preservation heat loss is calculated or measured, electromagnetic induction heating capacity compensates 10-90% of the pipeline heat preservation heat loss, the method and the structure are suitable for pipeline heat preservation when temperature of fluid in the pipeline ranges from 200 DEG C to 1000 DEG C, and the defects that an existing hot gas conveying pipeline is high in heat preserving cost, long in heat balance time, large in hot gas secondary heating investment, low in reliability and high in operation cost are overcome.

Description

technical field [0001] The invention relates to an active compensation heat preservation method for heat preservation of hot gas delivery pipelines, and a pipeline heat preservation structure used for implementing the method, which is mainly used for heat preservation of heat preservation pipelines such as hot gas delivery pipelines. Background technique [0002] In the existing pipeline insulation methods and structures, the method of controlling heat loss is to increase the thermal resistance of the insulation structure as much as possible and reduce the heat loss through the insulation layer. This is the best method for conventional fluids that need insulation. enough. [0003] For low-temperature pipelines, electric heat tracing or steam heat tracing and heat release methods are used to prevent freezing or fluid fluidity reduction to prevent problems caused by too low temperature. As disclosed in the Chinese patent CN201020129950 "A Submarine Pipeline Skin Effect Electr...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an active compensation heat preservation method and a pipeline heat preservation structure to solve the problems of high heat preservation cost, long heat balance time, large investment in secondary heating of hot gas, low reliability and high operating cost of hot gas transportation pipelines in the prior art. shortcoming

Images