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A combined heat insulation layer and its manufacturing method

A thermal insulation layer and combined technology, which is applied in the direction of machines/engines, rocket engine devices, jet propulsion devices, etc., can solve the problems of heavy workload, unguaranteed quality, and slow speed of manual placement, so as to save manufacturing time , avoid internal defects, improve the effect of structural integrity and reliability

Active Publication Date: 2021-01-26
HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual placement is slow, the workload is heavy, and the quality cannot be guaranteed

Method used

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  • A combined heat insulation layer and its manufacturing method
  • A combined heat insulation layer and its manufacturing method
  • A combined heat insulation layer and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] It is used for the heat insulation layer structure bonded on an engine casing, such as Figure 1-10 As shown, the combined heat insulation layer is a symmetrical structure, including a curved plate unit 1, the two sides of which are connected to the first flat unit 3 through the first transfer unit 2, and the two sides of the first flat unit are connected through the second transfer unit 4. Connect the second flat plate unit 5; the combined heat insulation layer takes the central axis of the curved plate unit as the axis of symmetry, and the two sides are axisymmetric; the thickness of the curved plate unit is greater than that of the first flat plate unit and that of the second flat plate unit thickness.

[0032] Specifically: the thickness of the arc-shaped plate unit is 90 mm, the thickness of the first flat plate unit is 50 mm, and the thickness of the second flat plate unit is 30 mm; the first transfer unit and the second transfer unit are right-angle transfer unit...

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Abstract

The invention discloses a combined heat insulation layer and a manufacturing method thereof. The combined heat insulation layer includes a plurality of spliced ​​heat insulation layer units, and the heat insulation layer units are spliced ​​through grooves, and an adhesive layer is painted inside the grooves; The heat insulation layer unit includes a flat plate unit, a curved plate unit and an adapter unit for connecting heat insulation layer units with different thicknesses. The present invention also relates to the manufacturing method of the combined heat insulation layer. First, the heat insulation layer unit is formed by using a mold, and the adhesive is applied to the spliced ​​parts of the obtained heat insulation layer unit. Finally, it is assembled and cured at room temperature, and the combined heat insulation layer unit can be obtained. Insulation layer. Compared with the traditional patch-type process, the method of the present invention greatly saves manufacturing time, and ensures the size of the profile through molding, ensures the compactness inside the heat-insulating layer, and avoids internal defects caused by manual sticking, such as air inclusions, detachment, etc. Sticking, lack of material, etc., improve its structural integrity and reliability, and can realize the conversion from manual to semi-automatic.

Description

technical field [0001] The invention belongs to the technical field of solid rocket motors, and in particular relates to a combined heat insulation layer and a manufacturing method thereof. Background technique [0002] The heat insulation layer structure is an important part of the solid rocket motor charge combustion chamber, which can prevent the charge combustion chamber shell from losing strength or being burned through due to high temperature under the action of high temperature gas, which has a great impact on the safety and reliability of the engine. plays a very important role. The traditional manufacturing process of the inner heat insulation layer of solid rocket motor adopts the manual patching process, which needs to be pasted piece by piece and layer by layer. For example, a 30mm thick heat insulation layer needs to be obtained by pasting 10 layers of 3mm thick heat insulation sheets, and it takes at least 30 days to prepare the heat insulation layer by using ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/34F02K9/38
CPCF02K9/34F02K9/38
Inventor 邱奇陈永钊刘美珍高运平朱稼麟陈小辕
Owner HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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