Sealing element and sealing method of complex curved surface structure cavity
A technology of complex curved surfaces and seals, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of complex curved surface structure cavity sealing difficulties, irregular openings, large openings, etc., to achieve good sealing and prevent high pressure Effects of gas leakage and large surface roughness
Active Publication Date: 2020-02-21
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0003] The invention provides a sealing member and a sealing method for a cavity with a complex curved surface structure to solve the technical problem of difficult sealing of a cavity with a discontinuous complex curved surface structure with large openings and irregular openings
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Embodiment Construction
[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.
[0029] Such as figure 1 and figure 2 As shown, the sealing member of the complex curved surface structure cavity in this embodiment includes a core block 10 and an air bag 11. The shape of the core block 10 is adapted to the complex curved surface structure cavity, and the core block 10 is composed of a plurality of block units. , the airbag 11 is wrapped on the outside of the block unit body, the airbag 11 is made of flexible material, and the airbag 11 is provided with a valve 12 for inflation or deflation. In another embodiment, the core block 10 is a whole block unit body, and the airbag 11 is wrapped on the outside of the whole block unit body.
[0030] The seal used for the complex curved surface structure cavity of this embodiment includes a core block a...
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The invention discloses a sealing element and a sealing method of a complex curved surface structure cavity. The sealing element of the complex curved surface structure cavity comprises a core block and an air bag, the shape of the core block is adaptive to the complex curved surface structure cavity, the core block is a whole block unit body, or the core block is formed by combining a plurality of block unit bodies, the air bag covers the outer side of the block unit body, the air bag is made of a flexible material, and the air bag is provided with an air valve for inflating or deflating. Thesealing element can adapt to various irregular, rough and complex curved surface sealing, the harder core block can resist the deformation of the sealing element caused by internal and external pressure difference, the air bag made of the flexible material can be attached to the surface of the complex curved surface structure cavity to form a continuous sealing curved surface, and the sealing performance is good. The sealing element of the invention is particularly suitable for sealing a complex curved cavity used for high-pressure tests.
Description
technical field [0001] The present invention relates to the technical field of turboshaft engines, in particular to a seal for a cavity with a complex curved surface structure, and also relates to a seal for a cavity with a complex curved surface structure for a gas generator intake casing of a turboshaft engine method. Background technique [0002] For turboshaft engines, due to the limitation of the working environment, the sealing test of the gas generator is required to ensure safety. The gas generator is a unit that generates high-temperature and high-pressure oil-gas mixture. Due to structural limitations, a certain type of gas turbine starter adopts side air intake, and the transmission casing and the intake casing are cast in one piece. It is difficult to form a continuous contact surface due to abrupt and large surface roughness, and the sealing test is carried out under high pressure conditions. The difficulty in the gas generator sealing test lies in the sealing...
Claims
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IPC IPC(8): F16J15/46
CPCF16J15/46
Inventor 杜霞覃莺朱林吴剑曹斐许沛环
Owner CHINA HANGFA SOUTH IND CO LTD