Round pipe sandwich heat-preventing component

Abstract

The invention relates to a round pipe sandwich heat preventing component which comprises an upper high temperature nickel base wrought alloy honeycomb panel, a lower nickel base alloy honeycomb plate and a round pipe set arranged between the high temperature nickel base wrought alloy honeycomb panel and the nickel base alloy honeycomb plate, wherein round pipes in the round pipe set are welded together; the high temperature nickel-base wrought alloy honeycomb panel and the nickel base alloy honeycomb plate are provided with multiple layers of reflecting screens; the upper high temperature nickel base wrought alloy honeycomb panel and the lower nickel base alloy honeycomb plate are connected with the round pipe set through point contact, namely, in a mode of line connection; one end of theround pipe set is sealed, while the other end is connected with a four-way joint; and high-temperature nickel base wrought alloy can bear temperature higher than or equal to 850 DEG C. The invention has the advantages of high-efficiency heat insulation and shock resistance.

Description

technical field [0001] The invention relates to a heat-resistant structural part of a high-speed aircraft body, in particular to a heat-resistant structural part using a circular tube sandwich, and belongs to the technical field of aerospace engineering. Background technique [0002] When a high-speed aircraft flies in the atmosphere at high speed, due to the aerodynamic heating effect at high Mach numbers, the surface structure of the aircraft needs to bear mechanical loads and also bear relatively strong thermal loads. For the large-area fuselage of the aircraft, heat-resistant structures such as metal and insulation are generally used to form a heat-resistant system to achieve heat insulation and protect the performance of the internal normal-temperature structure from being affected. The traditional heat-proof structure generally consists of a multi-layer structure composed of high-temperature metal metal honeycomb panels, non-ash fiber insulation layers, etc. In recent...

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Problems solved by technology

There is also a lot of research in China, but it is concentrated between 400°C and 600°C, and most of the metal heat-resistant materials are made of aluminum alloy, which is limited by its own physical properties and it is difficult to withstand higher temperatures. Thermal materials or honeycomb sandwich panels are difficult to put into industrial use due to the limitation of technological level

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