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Control method for heat-insulating layer structural uniformity

A control method and heat insulation layer technology, which can be used in heat exchange equipment, pipeline protection through heat insulation, heat preservation, etc., can solve problems such as uneven thickness

Active Publication Date: 2015-08-19
HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of the heat insulation layer, the problem of uneven thickness is common, and the quality problem that the weight of the heat insulation layer exceeds the design index requirements after repairing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for controlling the uniformity of a thermal insulation layer structure, mainly comprising the following steps:

[0021] 1) Preparation steps: According to the structural characteristics of the engine insulation layer, design and manufacture the corresponding rubber airbag; calculate and test the vacuum degree: the total amount of air intake V required for the rubber airbag to fully inflate under the state of -0.096MPa 1 And the total amount of intake air V required for the basic inflation of the rubber airbag 2 The fully bulging refers to the state that the rubber airbag is inflated but not inflated after being inflated; the basic expansion refers to that after the rubber airbag is inflated and inflated, it is in contact with the heat-insulating layer green sheet, but the heat-insulating layer green sheet has not been applied. state of pressure

[0022] 2) Evacuation step: Apply adhesive to the inside of the engine casing, push the engine casing with the heat ...

Embodiment 2

[0028] A method for controlling the uniformity of a thermal insulation layer structure, characterized in that it mainly includes the following steps:

[0029] 1) Preparation steps: According to the structural characteristics of the engine insulation layer, design and manufacture the corresponding rubber airbag; calculate and test the vacuum degree: the total amount of air intake V required for the rubber airbag to fully inflate under the vacuum state of -0.096MPa 1 And the total amount of intake air V required for the basic inflation of the rubber airbag 2 The fully bulging refers to the state that the rubber airbag is inflated but not inflated after being inflated; the basic expansion refers to that after the rubber airbag is inflated and inflated, it is in contact with the heat-insulating layer green sheet, but the heat-insulating layer green sheet has not been applied. state of pressure

[0030] 2) Evacuation step: Apply adhesive to the inside of the engine casing, push th...

Embodiment 3

[0036] A method for controlling the uniformity of a thermal insulation layer structure, characterized in that it mainly includes the following steps:

[0037] 1) Preparation steps: According to the structural characteristics of the engine insulation layer, design and manufacture the corresponding rubber airbag; calculate and test the vacuum degree: the total amount of air intake V required for the rubber airbag to fully inflate under the vacuum state of -0.096MPa 1 And the total amount of intake air V required for the basic inflation of the rubber airbag 2 The fully bulging refers to the state that the rubber airbag is inflated but not inflated after being inflated; the basic expansion refers to that after the rubber airbag is inflated and inflated, it is in contact with the heat-insulating layer green sheet, but the heat-insulating layer green sheet has not been applied. state of pressure

[0038] 2) Evacuation step: apply adhesive inside the engine case, and also apply adhe...

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Abstract

A control method for heat-insulating layer structural uniformity belongs to the technical field of solid rocket motor heat-insulating layer manufacturing, The method sequentially includes the steps: preparation, evacuation, inflation and exhausting, inflation and rotation. The structural uniformity of the heat-insulating layer can be improved through the above steps. Due to the conversion between the inflation and the exhausting of a rubber air bag and the speed controlling of the inflation and exhausting, uniform bulge of each portion of the rubber air bag can be ensured, and the displacement of a sinker arranged on the upper portion of the rubber air bag can be avoided. After the basic bulge of the rubber air bag, rotation and adjustment are conducted, the influence on the thickness of the heat-insulating layer sinker by the gravity can be solved, and thus the purpose of the complete structure and the uniform thickness of the heat-insulating layer can be achieved. The control method for the heat-insulating layer structural uniformity is applied to products in various models, remarkably improves the profile quality of the heat-insulating layer, solves the quality problem that the thickness of the heat-insulating layer is not uniform, and passes the ground test of motors.

Description

technical field [0001] The invention belongs to the technical field of manufacturing thermal insulation layers of solid rocket motors, and in particular relates to a method for controlling the uniformity of the thermal insulation layer structure. Background technique [0002] In the overall vacuum bonding process of the heat insulation layer, wrap the green sheet of the heat insulation layer on the outside of the rubber airbag and place it in the corresponding position of the shell. The rubber airbag is inflated from the flat state to the designed shape of the bag body, and the process of applying stress to the green sheet of the heat insulation layer. In this process, the bulging of each part of the rubber airbag is not uniform, and the bulging speed of the air nozzle of the rubber airbag is faster than that of other parts, so there is a possibility that the green sheet placed on the upper part of the rubber airbag will be displaced. Wrinkling and flanging appear. A...

Claims

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Application Information

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IPC IPC(8): F16L59/02
CPCF16L59/029
Inventor 朱稼麟陈永钊董晓宏李方朔王宇曾庆江刘相鹏王利明迟树平黄发
Owner HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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