Heat preservation modular structure applied to high-temperature pipeline heat transfer

Abstract

The invention discloses a heat preservation modular structure applied to high-temperature pipeline heat transfer. The structure comprises stainless steel thin films, a gradient function heat-preservation core material, a temperature sensor and a vacuum gauge, the stainless steel thin films are subjected to seamless welding, and the gradient function heat-preservation core material is composed of a ceramic fiber paper layer, a fiberglass paper layer and an aluminum-plastic film vacuum heat insulation plate. All parts synergistically take effects, and the heat preservation property is greatly improved. The temperature sensor is located on the inner surface of the heat preservation modular structure, and the vacuum gauge is located on an outer shell of the heat preservation modular structure. All the parts are integrally formed, the interior is vacuumized, optimization of the heat preservation effect is achieved, the overall heat conductivity coefficient is about 0.04 W / (m.K), and the thickness of the heat preservation layer is greatly decreased; and meanwhile through integrated structural design, construction of workers and subsequent maintaining and repairing are facilitated, the maintaining period is shortened, and economic benefits are greatly increased.

Description

technical field

[0001] The patent of the present invention relates to a thermal insulation modular structure, in particular to a thermal insulation modular structure applied to heat transfer of high-temperature pipelines. technical background

[0002] With the development of the nuclear power industry, people pay more and more attention to nuclear energy, an efficient and clean energy. The country also has a clear plan for the use of nuclear energy. The rational use of nuclear energy under the premise of ensuring safety can effectively alleviate the increasingly tense energy crisis. In the fast reactor, in order to isolate the radioactive core from the power generation part, the sodium cooling system is divided into a primary loop and a secondary loop. The primary loop is directly in contact with the core, and the heat is transferred to the secondary loop through a heat exchanger. The sodium flow in the secondary circuit heats the boiler to generate steam at about 483°C, whi...

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