Thermal matching performance measurement device of multi-layer composite thermal protection structure

Abstract

The invention discloses a thermal matching performance measuring device of a multi-layer composite thermal protection structure. The measuring device has a support tool set on the basic workbench, and the support tool is provided with a heat-insulating bottom plate, and the inner sleeve of the load-bearing layer of the multi-layer composite thermal protection structure to be tested and the bottom of the outer coat of the heat-proof and heat-insulating layer are evenly attached. Installed on the heat-insulating bottom plate, the upper end of the inner sleeve of the load-bearing layer is connected with the test pull wire of the load-bearing layer, and the upper end of the outer cover of the heat-proof and heat-insulation layer is respectively connected with the test pull-wire of the heat-proof and heat-insulation layer corresponding to each composite material layer; the inner sleeve of the load-bearing layer The top opening is provided with a heat-insulating cover plate for closing the inner cavity, and the outer periphery of the heat-proof and heat-insulating layer is surrounded by a test heating device, and the lower end of the test heating device is seated on the basic workbench. The measuring device can be used to accurately measure the relative displacement change between the layers of the cylindrical multi-layer composite heat protection structure under given heating conditions, and provide a basis for the design of the heat protection structure.

Description

technical field [0001] The invention belongs to the technical field of thermal protection, and in particular relates to a thermal matching performance measuring device of a multilayer composite thermal protection structure. Background technique [0002] Thermal protection technology is an important item of thermodynamic technology. The current multi-layer composite thermal protection structure is generally designed as a composite of multiple layer structures such as the anti / heat insulation layer and the load-bearing layer. The anti / heat insulation layer is generally a combined structure of single-layer or multi-layer composite materials, and the load-bearing layer is generally metal material. [0003] Due to the complex physical and chemical changes of composite materials at high temperature, and the characteristics of anisotropy, it is difficult to obtain its accurate high temperature thermodynamic parameters, so it is difficult to use the method of simulation calculation...

AI Technical Summary

Problems solved by technology

At present, there are mature technologies in China for related thermal tests, but there is no good measuring device to accurately measure the relative displacement of each layer of the multi-layer composite thermal protection structure during the heating process.

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