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An installation and fixing method and fixing structure of a high temperature heat shield

A technology of fixing structure and fixing method, which is applied to aerospace safety/emergency devices, heat-proof devices of aerospace vehicles, etc., can solve the problems of thick thickness of heat shield, difficult to fix, increase heat leakage, etc., and achieve low cost and saving. Weight, the effect of reducing heat leakage

Active Publication Date: 2021-12-31
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High temperature heat shield because the material of the reflective screen itself is a metal material, after N layers of metal materials are combined together, the thickness of the heat shield is thicker, the material is hard, the density is high, and it is not easy to fix
[0003] After searching the existing technology, the invention patent with the application number CN201510076209.0 discloses a method for installing the high-temperature heat shield of a spacecraft. The high-temperature heat shield body is closely installed with the engine flange and the wall of the load-bearing cylinder through the interface installation method. , the body strength of the high-temperature heat shield is enhanced by the method of body support, and it is supported between the middle engine and the load-bearing cylinder, but this kind of high-temperature heat shield is in contact with the satellite structural parts, which increases the leakage into the cabin during ignition. heat; and a high-temperature heat shield is used, which is not easy to install

Method used

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  • An installation and fixing method and fixing structure of a high temperature heat shield
  • An installation and fixing method and fixing structure of a high temperature heat shield
  • An installation and fixing method and fixing structure of a high temperature heat shield

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A fixing structure for a high temperature heat shield, comprising a butt ring 1, a flange 2 and a first stainless steel wire 3;

[0034] The docking ring 1 matches the outer peripheral edge size of the first high temperature heat shield 5, and the circumference of the docking ring 1 is evenly provided with a plurality of first threading holes 6 (48 holes are set in this embodiment, generally between 36-48 That is), the outer peripheral edge of the first high temperature heat shield 5 is evenly provided with a plurality of second threading holes 7, the first threading holes 6 and the second threading holes 7 are equal in number and corresponding in position, and the first stainless steel wire 3 passes through A plurality of first threading holes 6 and a plurality of second threading holes 7 bind the circumference of the docking ring 1 with the outer peripheral edge of the first high temperature heat shield 5, and the flange 2 is provided with a plurality of screws 21, and...

Embodiment 2

[0037] Embodiment 2 is a preferred example of Embodiment 1.

[0038] In Example 2, the screw 21 is connected to the first threading hole 6 on the circumference of the docking ring 1 through the second stainless steel wire 4, one end of the second stainless steel wire 4 is wound on the screw 21, and the other end is tied to the docking ring On the first threading hole 6 on the 1 circle. The second stainless steel wire 4 can be multiple, usually two or four. Other structures are the same as in Embodiment 1.

Embodiment 3

[0040] Embodiment 3 is a modified example of Embodiment 2.

[0041] In Example 3, the screw 21 is connected to the first threading hole 6 on the circumference of the docking ring 1 through the second stainless steel wire 4, and the second stainless steel wire 4 is bent into a "U" shape, wherein the bottom of the "U" shape is Connect to the screw 21 of the flange 2 and tighten it with a torque wrench. The two ends of the "U"-shaped steel wire and the first threading hole 6 of the docking ring are screwed and locked to ensure that they are tied securely.

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Abstract

The invention provides a fixing structure for a high-temperature heat shield, which includes a butt ring, a flange and a first stainless steel wire; the butt ring matches the size of the outer peripheral edge of the first high-temperature heat shield; A plurality of first threading holes are evenly provided in the ring, and a plurality of second threading holes are evenly provided on the outer peripheral edge of the first high temperature heat shield, and the first stainless steel wire passes through the plurality of first threading holes and the plurality of first threading holes. A second threading hole binds the circumference of the docking ring with the outer peripheral edge of the first high temperature heat shield, and the flange is provided with a plurality of fasteners, and the fasteners insulate the second high temperature heat shield The screen is fixed on the first high temperature heat shield, and the flange is connected with the spacecraft belt heat insulation equipment. In the fixing structure of the high-temperature heat shield of the present invention, the contact between the high-temperature heat shield and the satellite structural parts is less, which reduces the heat leakage into the cabin during ignition; the installation and fixing method of the high-temperature heat shield of the present invention is simple in process operation and easy to realize , the cost is lower.

Description

technical field [0001] The invention relates to the technical field of thermal control, in particular to a method for installing and fixing a high-temperature heat shield and a fixing structure. Background technique [0002] For the vicinity of the satellite's engine, in order to avoid heat radiation to nearby single machines and components when the engine is burning, it is necessary to use a high-temperature heat shield for thermal isolation. Because the material of the high-temperature heat shield is a metal material itself, after N layers of metal materials are combined together, the thickness of the heat shield is thick, the material is hard, and the density is high, so it is not easy to fix. [0003] After searching the existing technology, the invention patent with the application number CN201510076209.0 discloses a method for installing the high-temperature heat shield of a spacecraft. The high-temperature heat shield body is closely installed with the engine flange a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/58
CPCB64G1/58
Inventor 刘炜葳王彦赵吉喆顾燕萍袁双胡炳亭康奥峰陈彬彬程梅苏
Owner SHANGHAI SATELLITE ENG INST