Self-inflating sealing ring, cylinder section clamping tool and inner wall protection and local oxidation method

A sealing ring and self-inflating technology, which is applied in the field of inner wall protection and local oxidation, self-inflating sealing ring, barrel section clamping tooling, can solve the problems of difficult installation and inability to disassemble, and achieve simple, non-dangerous and convenient operation Effect

Active Publication Date: 2021-04-06
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Conventional sealing rings are used for sealing or sealing with large rubber plugs, and the following contradictions arise in production: if the sealing meets the requirements, the tank liquid can be completely isolated from the inner wall of the protection cylinder, but It is very difficult to install, even if it is installed in place, it will face the embarrassing situation that it cannot be disassembled after oxidation

Method used

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  • Self-inflating sealing ring, cylinder section clamping tool and inner wall protection and local oxidation method
  • Self-inflating sealing ring, cylinder section clamping tool and inner wall protection and local oxidation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A self-inflating sealing ring.

[0065] The production material is fluorine rubber, and 100 grams of solid aluminum sulfate and 60 grams of potassium carbonate are stored inside. The inner diameter of the sealing ring is 8 meters when it is not inflated.

[0066] When in use, inject a small amount of water into the feed port of the seal ring to seal the feed port of the seal ring. Aluminum sulfate and potassium carbonate react with gas to inflate and expand the seal ring.

Embodiment 2

[0068] A clamping tool inside a large cylinder section.

[0069] Includes: a self-inflating seal and a protective barrel section.

[0070] A self-inflating sealing ring is made of silica gel, and 100 grams of solid aluminum sulfate and 50 grams of sodium carbonate are stored inside. The inner diameter of the sealing ring is 6 meters when it is not inflated, and the outer diameter of the sealing ring is 6.1 meters when it is inflated.

[0071] The protective cylinder section is made of polypropylene, the outer diameter D2 of the protective cylinder section is 6 meters, and the height H2 is 3 meters. (The inner diameter D1 of the large cylinder section is 6.05 meters, and the height H1 is 3 meters)

Embodiment 3

[0073] A method for protecting the inner wall of a large cylinder section.

[0074] The inner diameter D1 of the large cylinder section is 5 meters, and the height H1 is 3 meters.

[0075] The internal clamping tool of the large cylinder section is used, in which the self-inflating sealing ring is made of silica gel, and 745 grams of solid aluminum nitrate and 336 grams of ammonium carbonate are stored inside. The diameter is 5.05 meters.

[0076] The protective cylinder section is made of polypropylene, the outer diameter D2 of the protective cylinder section is 4.9 meters, the height H2 is 3 meters, and the inner diameter of the protective cylinder section is 4.8 meters.

[0077] Use a crane to lift the protective tube section, and put it inside the large tube section, and the height is even.

[0078] Install two self-inflating sealing rings, the two self-inflating sealing rings are installed in the gap between the inner wall of the large cylinder section and the outer wal...

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Abstract

The invention relates to a self-inflating sealing ring, a cylinder section clamping tool and an inner wall protection and local oxidation method, and belongs to the technical field of aerospace large cylinder section structures. The problems that in the prior art, a large cylinder section uses a conventional sealing ring or a large rubber plug and is very difficult to install or cannot be disassembled after being oxidized, a large-size cavity is formed in the large-size cylinder section, and normal oxidation cannot be achieved are solved. The self-inflating sealing ring comprises a sealing ring shell and filler, and the sealing ring shell is provided with a feeding port; the sealing ring shell is filled with the filler, the filler is a chemical reactant which generates gas through a chemical reaction, and the generated gas achieves inflation and expansion of the sealing ring shell; and the gas is one or more of carbon dioxide and oxygen. Local oxidation under the protection of the inner wall of the aerospace large cylinder section is achieved.

Description

technical field [0001] The invention relates to the technical field of aerospace large cylinder section structure, in particular to a self-inflating sealing ring, a cylinder section clamping tool, inner wall protection and local oxidation method. Background technique [0002] Large-scale barrel sections, that is, large-diameter barrel sections (diameter greater than five meters), are common structural modules in the aerospace and nuclear power fields. Due to their special functions, it is usually necessary to protect the outer surface of large barrel sections. Since the large barrel section is made of metal or alloy, the anodic oxidation method is usually used for the large barrel section to cover the surface with a dense oxide layer, while the inner surface of the barrel section does not need an oxide layer, and usually needs to be protected by brushing the inner surface . For large-scale barrel parts, the inner surface area is large, and a large area of ​​glue is required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/46C25D11/00C25D7/04B64G1/22
CPCF16J15/46C25D11/005C25D11/022C25D7/04B64G1/22Y02P20/141
Inventor 汤宏才杨茗佳崔永信
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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