A leak-proof hot-bent pipe insulation layer and preparation method thereof

Abstract

A leak-proof thermal insulation layer of a hot bend pipe, comprising a main body insulation layer, a reflective layer, a bonding layer, a formed reflection layer and an outer protective layer, characterized in that: the main body insulation layer is composed of multi-layer insulation materials, and the main body insulation layer is divided into It is a plurality of layer groups with uniform thickness, and the reflective layer is placed in each layer group, and is alternately superimposed with each layer of thermal insulation material in each layer group to form a composite thermal insulation layer group; the elbow leak-proof thermal insulation layer prepared by the invention reduces the upper The heat exchange between the inside and outside of the insulation layer, and the formed reflective layer fully block the air convection between the seams and reduce the convective heat transfer between layers. The specific dislocation segment and splicing method increase the heat conduction distance between the splicing seams and reduce the local heat loss at the splicing seams; the prefabricated modules are stable in size, reduce material waste, and can form a good fit with the elbow Combined, simplify the on-site construction process, reduce the heat leakage caused by construction, and improve the insulation efficiency.

Description

technical field [0001] The invention relates to the technical field of heat insulation materials, in particular to a leak-proof heat-bend pipe insulation layer and a preparation method thereof. Background technique [0002] The traditional thermal insulation materials are mainly to increase the gas phase void ratio and reduce the thermal conductivity and conductivity coefficient. [0003] The elbow insulation layer is mainly used in the elbow position of the high-temperature pipeline. Its function is to reduce the heat loss on the surface of the elbow to reduce energy consumption, lower the ambient temperature, and avoid burns. At present, soft cotton or cloth insulation materials are often used for the insulation layer of elbow pipes. The insulation materials are cut in size according to the site conditions, and there are disadvantages of uneven thickness of the insulation layer after covering and long construction period. Fibrous insulation materials such as ceramic fiber...

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Problems solved by technology

At present, soft cotton or cloth insulation materials are often used for the insulation layer of elbow pipes. The insulation materials are cut in size according to the site conditions, and there are disadvantages of uneven thickness of the insulation layer after covering and long construction period.

Fibrous insulation materials such as ceramic fiber felt and glass fiber felt have excellent thermal insulation performance in order to increase convective heat transfer and radiation heat transfer in the use environment, but they are harder than cotton-like thermal insulation materials. Heat insulation materials are superimposed on each other to a specified thickness. When using profile-type inorganic insulation materials to cover high-temperature elbows, each layer of insulation layer needs to be cut into small pieces with irregular geometric shapes and then spliced. The on-site construction is complicated and the utilization rate of insulation materials The insulation layer is separated, there are many seams, it cannot fit well with the surface of the elbow, the heat loss is large, the surface temperature is uneven, the expected heat insulation effect cannot be achieved, and the service life is short.

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