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Sealing device and application of sealing device for achieving thermal deformation compensation

A sealing device and sealing structure technology, which is applied in jet propulsion devices, gas turbine devices, machines/engines, etc., can solve problems such as sealing and damage, and achieve the effects of reducing stress generation, reducing processing difficulty and cost, and convenient operation

Active Publication Date: 2017-02-15
CHINA AVIATION POWER MACHINE INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a sealing device for the damage and sealing problems when the oil pipe or test probe needs to pass through the multi-layer casing in the prior art

Method used

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  • Sealing device and application of sealing device for achieving thermal deformation compensation
  • Sealing device and application of sealing device for achieving thermal deformation compensation
  • Sealing device and application of sealing device for achieving thermal deformation compensation

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Embodiment Construction

[0031] Such as figure 2 with 3 As shown, the present embodiment provides that the sealing device includes a casing structure and a sealing structure adapted to the casing structure on the casing, the casing structure is installed in the mounting hole of the multi-layer casing, and the casing structure It includes a hollow casing 5 through which the oil pipe or probe 1 passes; both ends of the casing 5 are spherical surfaces 7 , and a cylindrical fitting surface 8 is formed between the two spherical surfaces. The casing is a multi-layer casing, including an inner casing 2, an intermediate casing 3 and an outer casing 4; the outer casing 2, the middle casing 3 and the inner casing 4 are all provided with mounting holes, A cavity 3 is formed between the outer casing 2 and the middle casing 3 , a cavity 2 is formed between the middle casing 3 and the inner casing 4 , and the casing 5 penetrates through the mounting hole of the outer casing 2 and runs through the cavity 3 , pene...

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PUM

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Abstract

The invention discloses a sealing device and application of the sealing device for achieving thermal deformation compensation. A casing pipe structure is designed, sealing of an installation hole is achieved, in addition, an oil pipe or a probe penetrates a casing pipe and is not directly matched with a case, stress cannot be generated under different states, the service life of the oil pipe or the probe can be effectively prolonged, and operation is convenient. Furthermore, the casing pipe is designed in the manner that the two ends of the casing pipe are spherical faces, the matched face on the case is designed into a cylindrical face, a matched sealing ring capable of axially flowing is designed in a middle case body, sealing can be ensured under different states, thermal deformation compensation can be achieved, stress is not generated, the machining difficulty can be greatly lowered, and the cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of gas turbine engines, and more specifically, to a sealing device and its application to realize thermal deformation compensation. Background technique [0002] In existing gas turbine engines and ground combustion engines, in order to supply oil to bearings or test the temperature and pressure in the engine flow passage, it is often encountered that oil pipes or test probes need to pass through the multi-layer casing from the outside of the engine, such as the attached figure 1 As shown, the outer casing 2, the middle casing 3 and the inner casing 4 of the engine are all provided with mounting holes, and a cavity 3 is formed between the outer casing 2 and the middle casing 3, and the middle casing 3 and the inner casing A cavity 2 is formed between the casings 4, and the oil pipe or probe 1 penetrates from the mounting hole of the outer casing 2, penetrates the cavity 3, penetrates into the cavity 2 throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/28
CPCF02C7/28
Inventor 叶炜陈竞炜付晟徐鲁兵蔡琴陈润拓
Owner CHINA AVIATION POWER MACHINE INST
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