Composite hollow anti-radiation screen

Abstract

The invention relates to a composite hollow anti-radiation screen. The composite hollow anti-radiation screen comprises a flange, an outer anti-radiation screen and an inner anti-radiation screen, wherein the outer anti-radiation screen and the inner anti-radiation screen are connected with the flange, a first hollow structure is distributed on the outer anti-radiation screen, and a second hollowstructure is distributed on the inner anti-radiation screen. The composite hollow anti-radiation screen has the advantage of light self weight, a vacuum maintenance structure is simplified, the spaceis saved, and the hollow structures and a hemispherical bottom structure are adopted, so that the self weight of the anti-radiation screen can be reduced, and radiation heat transfer is greatly reduced.

Description

technical field [0001] The invention relates to a radiation protection screen, in particular to a composite hollow radiation protection screen. Background technique [0002] Thermostats, especially cryostats, have good thermal insulation from the external environment, and are widely used in the measurement of various low-temperature characteristics such as sample mechanical properties and superconducting properties, as well as in the development of scientific research equipment and national defense security. The heat leakage of the thermostat mainly has three ways: conduction, convection and radiation. In order to maintain a high and stable constant temperature environment, different measures need to be taken to reduce heat leakage: usually, thermal insulation structures such as insulated suspenders or filaments are used to reduce conduction leakage. Heat; reduce convective heat leakage by maintaining high vacuum in the system (vacuum system pumps out the working medium such...

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Problems solved by technology

[0005] The purpose of this invention is to solve the problems of the traditional radiation protection screen itself, such as heavy load, complex vacuum structure, and poor radiation protection effect, and proposes a composite hollow radiation protection screen, which has the advantages of lightness and simplicity, and can achieve high-efficiency radiation protection effect

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