Multi-layer heat insulation pad

Abstract

The invention discloses a multi-layer heat insulation pad, which comprises an upper layer heat insulation pad (1), a middle layer heat insulation pad (2), a lower layer heat insulation pad (5) and a cladding layer (3); the lower layer heat insulation pad ( 5), the middle layer heat insulation pad (2) and the upper layer heat insulation pad (1) are installed on the tooling in turn, and pressed from the upper end; the outer surface and the upper and lower surfaces of the three-layer heat insulation pad are covered with a cladding layer (3) , and press it tightly; cut out a V-shaped opening on the upper and lower ends of the cladding layer (3), and press the remaining cladding layers at both ends to the upper heat insulation pad (1) and the lower heat insulation pad (5) top; finally roughen the coating layer (3) on the end faces of the upper layer heat insulation pad (1) and the lower layer heat insulation pad (5) to form the roughened surface (4). The invention adopts the form of multi-layer heat insulation pad, and improves the heat insulation effect by increasing the contact thermal resistance, and solves the temperature index requirements of different equipment, especially these high-precision equipment, in a limited space.

Description

technical field [0001] The invention belongs to the technical field of thermal control and structural design of spacecraft, and is mainly used for the internal heat insulation and structural connection problems of a system mainly based on radiation heat exchange and heat conduction heat exchange like a spacecraft. Background technique [0002] With the development of spacecraft technology, the functions of spacecraft are becoming more and more extensive, and the complexity of its tasks is also increasing. More and more high-precision and high-stability electronic and optical devices are used on spacecraft. These devices Compared with other equipment in the past, the requirements for temperature level and temperature stability are getting higher and higher. For example, for some optical cameras, the window glass temperature requirement is 20±3°C, and the radial temperature difference of the window glass is ≤0.3°C. For high-precision rubidium clocks, the temperature requiremen...

AI Technical Summary

Problems solved by technology

However, it is difficult to match the size of the metal sleeve and the insulation pad, and one end of the metal sleeve needs to be closed

Using a metal sleeve to fix the multi-layer heat insulation pad will also reduce the thermal resistance, and the processing of this metal sleeve is more complicated

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