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Plugging cover for vent pipe joint of turbine casing of aero-engine

A technology for aero-engine and turbine casings, which is applied in the field of blocking cover of aero-engine turbine casing vent pipe joints, which can solve problems such as easy formation of new redundant objects, insufficient protection of plugs, and inconvenient connections, etc., and achieve a wide range of structural applications , Convenient for standardized production, easy to plug in and take out, and labor-saving effect

Inactive Publication Date: 2020-09-18
CHENGDU ENGINE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a plug used for the air pipe joint of the turbine casing of the aero-engine, so as to solve the defects of the existing plug that the protection is not in place, the connection is inconvenient, the taking is laborious or easy to be damaged, and new redundant objects are easy to be formed , which can realize the reliable connection and sealing guarantee of the blocking cover, so as to ensure the working reliability of the turbine casing

Method used

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  • Plugging cover for vent pipe joint of turbine casing of aero-engine
  • Plugging cover for vent pipe joint of turbine casing of aero-engine
  • Plugging cover for vent pipe joint of turbine casing of aero-engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to image 3, a blocking cover for aero-engine turbine casing breather pipe joints, comprising: a cover body 1 and a plug body 2 arranged in the cover body 1, the cover body 1 is a cylindrical structure with one end open and one end closed, and the cover body 1 includes : the bottom surface 11 and the side wall 12 arranged on the periphery of the bottom surface 11; the longitudinal section of the side wall 12 is a hook-shaped arc structure with an opening inward. The plug body 2 is a cylindrical structure with a wall thickness of 8 mm. The end of the plug body 2 close to the cover body 1 is provided with an annular circular platform 21 matching the inner cavity wall of the ventilation pipe. 1 / 3 of the length of body 2,

[0041] refer to Figure 4 , the outer wall of the plug body 2 is provided with 10 positioning ribs 22 uniformly arranged along the circumferential direction of the plug body 2, one end of the positioning ribs 22 is arranged on the round platform ...

Embodiment 2

[0045] refer to Image 6 , The difference between this embodiment and Embodiment 1 is that the longitudinal section of the side wall 12 of the cover body 1 is a planar structure arranged parallel to the outer wall of the vent pipe joint 3, and in this embodiment, the wall of the plug body 2 The thickness is 7mm, the length of the round platform 21 is 1 / 4 of the length of the plug body 2, and the number of positioning ribs 22 is 8.

[0046] When the vent pipe joint 3 does not have the vent pipe joint flange 4, the blocking cover in this embodiment can be used. In this embodiment, the side wall 12 of the cover body 1 is coated on the outer wall of the vent pipe joint 3, and the cover body The bottom surface 11 of 1 is in contact with the end surface of the air pipe joint 3, and the side wall 12 of the cover body 1 can strengthen the overall fixing effect of the block, and because the side wall 12 of the cover body 1 is completely covered on the outer wall of the air pipe joint 3...

Embodiment 3

[0048] refer to Figure 7 The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the longitudinal section of the side wall 12 of the cover body 1 in this embodiment is a planar structure arranged parallel to the outer wall of the vent pipe joint 3, and the side wall 12 Threads are provided near the inner surface of the vent pipe joint 3, and in this embodiment, the wall thickness of the plug body 2 is 6 mm, the length of the round platform 21 is 1 / 5 of the length of the plug body 2, and the number of positioning ribs 22 is 6 .

[0049] When the outer wall of the air pipe joint 3 is provided with threads, the side wall 12 of the cover body 1 can be provided with matching threads, and the side wall 12 of the cover body 1 and the outer wall of the air pipe joint 3 are connected by threads, and its installation and Disassembly is more convenient, and the fixing and sealing effects are further enhanced. The length of the round platform 21 and the number o...

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Abstract

The invention discloses a plugging cover for a vent pipe joint of a turbine casing of an aero-engine. The plugging cover comprises a cover body and a plug body arranged in the cover body, wherein thecover body is of a cylindrical structure with an open end and a closed end; the cover body comprises a bottom surface and a side wall arranged on the periphery of the bottom surface; the plug body isof a cylindrical structure; an annular truncated cone matched with the inner cavity wall of a vent pipe is arranged at one end, close to the cover body, of the plug body; a plurality of positioning ribs arranged along the circumferential direction of the plug body are arranged on the outer wall of the plug body; one end of each positioning rib is arranged on the truncated cone while the other endof each positioning rib extends to one end away from the truncated cone; the outer wall of each positioning rib abuts against the inner cavity wall of the vent pipe; and the cover body, the plug body,the truncated cone and the positioning ribs are made of a soft elastic material. The plugging cover solves the defects that an existing plug is poor in protection, inconvenient for connection, laborious in taking or easy to damage and easy to form a new redundant object, and the reliable connection and sealing guarantee of the plugging cover can be achieved, so that the working reliability of theturbine casing is guaranteed.

Description

technical field [0001] The invention relates to the technical field of plugs, in particular to a plug used for an aero-engine turbine case breather pipe joint. Background technique [0002] The aero engine is the heart of an aircraft, and a high-weight aero engine is the basis for ensuring flight safety. From the known failures of aero-engines, it can be seen that the excess material enters the key part of the engine-casing, which has a great impact on the performance of the engine and seriously threatens flight safety. [0003] Extraneous substances are also called foreign substances, which refer to all substances that adhere and remain in the parts, enter the interior of the casing from the outside and do not meet the specified requirements. For example, debris in the production process, operating debris, environmental dust, etc. With the continuous improvement of the performance of aero-engines, the design and structure of the casing is becoming more and more complex, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D59/06
CPCB65D59/06
Inventor 黄颖
Owner CHENGDU ENGINE GROUP
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