Large complex special-shaped curved surface composite thermal insulation layer and preparation method thereof

Abstract

The invention discloses a large complex special-shaped curved surface composite thermal insulation layer, which consists of a plurality of curved surface modules. Each curved surface module sequentially comprises an inner thermal insulation layer, a bonding layer, a solid thermal insulation layer and a protection layer. The inner thermal insulation layer of each curved surface module is made of acotton like material; the solid thermal insulation layer is formed by overlapping a plurality of paper like or felt like material thermal insulation layers and a plurality of reflecting layers in a crossed manner; the contour sizes of the thermal insulation layers and the reflection layers, which are mutually crossed and overlapped in the solid thermal insulation layer are sequentially increased by 1-5 mm from inside to outside, and the contour edges of the same sides of the thermal insulation layers and the reflection layers are aligned and attached to the same plane. The curved surfaces areused for splicing and fitting the curved surfaces to form the same outline as the curved surfaces, splicing gaps are reduced, the manufactured curved surfaces are smooth, the splicing gaps between thecurved surfaces are reduced, heat leakage is reduced, and the thermal insulation performance is improved. The service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of heat insulation materials, in particular to a large-scale complex special-shaped curved surface composite heat insulation layer and a preparation method thereof. Background technique [0002] Large-scale tanks are often used as thermal energy conversion devices in thermal power engineering, and the two ends of the tank are usually curved surfaces such as hemispherical and semi-ellipsoidal structures. In order to reduce the loss of heat energy, a layer of heat insulation material is often coated on the surface of the tank body. The heat insulation materials currently used are mostly cotton, felt, paper, etc. Cotton-like insulation materials tend to collapse and accumulate at the bottom after being used for a period of time, which seriously affects the thermal insulation performance. The felt-like and paper-like insulation layers are flat materials that cannot fit the curved surface well. There is a large ...

AI Technical Summary

Problems solved by technology

Cotton-like insulation materials tend to collapse and accumulate at the bottom after being used for a period of time, seriously affecting thermal insulation performance

The felt-like and paper-like insulation layers are flat materials that cannot fit the curved surface well. There is a large gap between the insulation layer and the curved surface of the tank body, which reduces the heat insulation effect. If the above-mentioned flat materials are cut into small planes and spliced ​​into Nearly arc-shaped structure, which will lead to dense joints, sharp drop in thermal insulation performance, long processing time, complicated process and difficult to control, and low bending resistance of arc-shaped overall structure spliced ​​by small pieces of flat materials

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