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Mortise and tenon joint type screw-free bolt cover plate type thermal protection structure and production method thereof

A thermal protection structure, screwless technology, applied in the field of aerospace vehicles, can solve problems such as thermal short circuit, large number of parts, and reduce the overall strength of the material, and achieve the effects of convenient maintenance, elimination of local heat leakage, and improvement of thermal insulation efficiency.

Pending Publication Date: 2021-02-05
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The connection between the high-temperature heat-resistant cover layer and the low-thermal-conduction heat-insulation material layer of the traditional cover-type heat-proof structure is usually composed of ceramic or metal materials with high high-temperature strength, and the thermal conductivity of such materials is much higher Due to low thermal conductivity and heat insulation materials, the connecting parts themselves and their surrounding areas are prone to heat transfer and cause "thermal short circuit", thus forming local "hot spots" and reducing the heat resistance performance of the overall structure
[0005] (2) The connecting parts of the traditional cover-type heat-resistant structure need to be fixed or pass through the high-temperature heat-resistant cover and low thermal conductivity and heat-insulating material layer, which destroys the structural integrity of the heat-resistant cover and heat-insulating material, and reduces the material's durability. Overall strength; for ceramic cover plates and heat insulation materials, the thread and other structures of the connectors form local processing damage and produce stress concentration, which is easy to cause brittle fracture of ceramic materials
[0006] (3) The number of parts in the traditional cover-type heat-proof structure is large, the assembly process of the whole part is complicated, the inspection cycle of the connection validity is long, and the maintenance and repair are difficult; in addition, the processing of the connection parts is difficult, the cycle is long and the cost is high

Method used

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  • Mortise and tenon joint type screw-free bolt cover plate type thermal protection structure and production method thereof
  • Mortise and tenon joint type screw-free bolt cover plate type thermal protection structure and production method thereof
  • Mortise and tenon joint type screw-free bolt cover plate type thermal protection structure and production method thereof

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preparation example Construction

[0065] The present invention also provides a method for preparing a mortise and tenon type heat protection structure without screws and bolts, the method comprising the following steps:

[0066] S1. Prepare the surface heat-resistant cover plate 1, N movable components of heat-insulating material; the surface heat-resistant cover plate 1 is a box-shaped structure with an opening at one end, and a flanging roll facing the center of the opening is provided around the opening end mouth; each thermal insulation material movable component has the same structure, and the outer surface of each thermal insulation material movable component is reserved with a groove matching the roll opening of the surface heat-proof cover plate 1.

[0067] S2. Place the surface heat-proof cover 1 on the installation platform, and extend the movable components of the heat-insulating material from the opening end of the surface heat-proof cover 1 into the cavity of the surface heat-proof cover 1, and the...

Embodiment

[0073] A specific embodiment of the present invention provides a mortise and tenon type heat protection structure without screws and bolts, including: a surface heat-resistant cover plate 1, a heat-insulating material movable component 2, a heat-insulating material fixed component 3, a first Adhesive adhesive layer 4, strain isolation pad 5, second adhesive adhesive layer 6, cold structural panel 7; thermal insulation material movable assembly 2 includes 4 thermal insulation material movable assemblies. The four insulating material movable assemblies are respectively recorded as: the first insulating material movable assembly 2A1, the second insulating material movable assembly 2A1, the third insulating material movable assembly 2B1, and the fourth insulating material movable assembly 2B2.

[0074] Such as figure 1 As shown, the surface heat-resistant cover plate 1 is a square box-shaped structure with an opening at one end and a cavity, and a flanging mouth facing the center ...

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Abstract

The invention relates to a mortise and tenon joint type screw-free bolt cover plate type thermal protection structure and a production method thereof. The cover plate type thermal protection structurecomprises a surface thermal protection cover plate, a thermal insulation material fixing assembly and N thermal insulation material movable assemblies, wherein the N is larger than or equal to 2. TheN thermal insulation material movable assemblies are movably connected with the surface thermal protection cover plate in a mortise and tenon joint mode, and the thermal insulation material fixing assemblies are plugged into gaps jointly formed between the thermal insulation material movable assemblies and the surface thermal protection cover plate and used for finally limiting and fixing the thermal insulation material movable assemblies and the surface thermal protection cover plate. And a cover plate type thermal protection main body structure is formed.

Description

technical field [0001] The invention relates to a mortise and tenon type screwless bolt cover plate type thermal protection structure and a preparation method thereof. The thermal protection structure is a high-temperature non-ablative and reusable thermal protection structure, which belongs to the technical field of aerospace vehicles. Background technique [0002] When a high-speed aircraft flies in the atmosphere, high-temperature and high-speed gas (also known as aerodynamic heating effect) will be generated between the wall of the high-speed object and atmospheric molecules due to impact and friction effects, thereby heating the surface of the aircraft and endangering the structural safety of the aircraft. In order to overcome the adverse effects of aerodynamic heating effects, high-speed aircraft generally need to design special components for protection. Generally, this type of special material or structure used for aircraft aerodynamic heating protection is called air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/40B64G1/58B32B9/00B32B9/04B32B15/20B32B7/12B32B37/12B32B38/00
CPCB64C1/403B64G1/58B32B5/02B32B15/14B32B15/20B32B7/12B32B37/1284B32B38/00B32B38/0036B32B2038/0076B32B2262/10B32B2307/304B32B2605/18
Inventor 罗晓光俞继军邓代英马彬陈思员艾邦成陈连忠
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS