A high-efficiency prefabricated steam insulation pipe

Abstract

The invention relates to an efficient pre-generated steam heat insulating tube. The efficient pre-generated steam heat insulating tube sequentially comprises a working tube, a first heat insulating layer, an outer protective steel tube, a second heat insulating layer and an outer protective tube from inside the outside. The first heat insulating layer and a sliding guide support sequentially sleeves the working tube in the axial direction, wherein the first heat insulating layer is adjacent to the sliding guide support, the sliding guide support comprises a support body and a lining tube, the cross section of the support body is in a shape of radially-fluctuated and circumferentially-evenly-distributed waves, the peaks and the troughs of the waves are provided with arch convex curved surfaces and arch concave curved surfaces, the vertexes of the concave curved surfaces of the troughs are in contact with the lining tube, and the vertexes of the convex curved surfaces of the peaks are in contact with the outer protective steel tube. The efficient pre-generated steam heat insulating tube is reasonable in design, has the advantages of being low in heat losses, high in conveying medium temperature, light in weight and small in size, and under the premise of reducing the cost, obviously improves the conveying distance of high-temperature mediums.

Description

technical field [0001] The invention relates to a thermal insulation pipeline device for high-temperature and high-pressure steam medium, in particular to a high-efficiency prefabricated steam thermal insulation pipeline, which belongs to the technical field of thermal pipelines. Background technique [0002] At present, in the steam direct-buried transportation technology in the thermal industry, the application form of the direct-buried thermal insulation transportation pipeline is mainly the steel jacket prefabricated insulation pipeline, that is, the inner working pipe and the outer protection pipe are all steel pipes, and the insulation layer is mostly made of high temperature resistant Centrifugal glass wool, aluminum silicate wool and its products, calcium silicate products, etc. There are two main structural forms of traditional prefabricated direct buried steam pipelines: internal sliding type and external sliding type. The principle of both is to reduce heat conduc...

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Problems solved by technology

However, these two structural forms also have inevitable disadvantages in the operation process: in order to achieve a certain thermal insulation effect, the thermal insulation layer of the inner sliding pipe adopts the structural form of combining inorganic materials and organic materials, and the thermal insulation layer is relatively thick. , the pipe volume is large, there are too many joints in the hard insulation layer, the heat leakage is large, and the construction cost is high, and the overall cost is high; the insulation layer of the outer sliding pipe is completely made of organic insulation materials, due to the water resistance of organic insulation , leading to the collapse of the organic insulation material after long-term use, which eventually reduces the insulation performance of the insulation pipe and even fails

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