Finger tip sealing device and the flexible constrictor

A technology of fingertip sealing and current limiting sheet, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of poor sealing performance, high processing cost, axial tilting of the finger body, etc., and achieve sealing Improved performance, low processing cost, and improved sealing performance

Inactive Publication Date: 2010-06-23
CHINA GAS TURBINE ESTAB
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Purpose of the present invention: In order to solve the problems that the finger body of the prior art fingertip sealing device is prone to axial tilting, poor sealing performance, and high processing cost, the present invention provides a method that can effectively restrain the finger body Fingertip seal device with tilting and bending, improved sealing performance and low processing cost

Method used

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  • Finger tip sealing device and the flexible constrictor
  • Finger tip sealing device and the flexible constrictor
  • Finger tip sealing device and the flexible constrictor

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Embodiment Construction

[0019] The present invention will be described in further detail below by means of specific embodiments:

[0020] see figure 1 , which is a structural schematic diagram of a preferred embodiment of the fingertip sealing device of the present invention. In this embodiment, the fingertip sealing device includes a front baffle 1 , a flexible restrictor 4 , a fingertip 3 and a rear baffle 2 arranged in sequence. Wherein, the front baffle 1 and the rear baffle 2 are annular plate-shaped structures, the flexible flow limiting sheet 4 and the fingertip sheet 3 are also annular structures, and the outer peripheral edges of the flexible flow limiting sheet 4 and the fingertip sheet 3 are Pairs of assembly holes are arranged on the top, and the flexible current limiting sheet 4 is arranged alternately with the adjacent fingertip sheet 3 and the transfer holes of the fingertips of each fingertip sheet 3 during assembly, so as to have a better installation effect.

[0021] The fingertip...

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Abstract

The invention relates to a finger tip sealing device, which comprises a front baffle plate (1) and a rear baffle plate (2) with circular structures and a plurality of finger tip sheets (3) arranged between the front and rear baffle plate; wherein, a finger body (6) with clearing is provided from the internal diameter part of the finger tip sheet and finger bodies (6) between two adjacent finger tip sheets (3) are staggered from each other; wherein, a flexible constrictor (4) with circular structure is arranged between the front baffle plate (1) and the finger tip sheet (3) and the internal diameter of the flexible constrictor (4) is consistent with the rear baffle plate (2) and a plurality of cut grooves (5) are provided along the direction of the internal diameter. Equipped with the flexible constrictor, the finger tip sealing device of the invention can effectively eliminate the axial bending deformation of the finger bodies of the finger tip sheets so as to increase the sealing performance of the finger tip sealing device, and is characterized by simple structure and convenient processing and has larger economic values.

Description

technical field [0001] The invention relates to a fingertip sealing device. Background technique [0002] During the processing of the fingertip seal, since the fingertip sheet used as the current limiting sheet is very thin, the flatness of the processing is very high, which is difficult to guarantee in practice. Therefore, because the fingertip sheet is too thin, there is always a certain amount of warping deformation in the axial direction of the fingertip sheet during assembly. This deformation prevents the gaps of the fingertip sheets from being completely covered and increases the leakage of the airflow, thereby directly affecting the sealing matching between the fingertip sheets and having a greater impact on the sealing performance of the fingertip seals. [0003] In order to reduce the influence of warping deformation, in the prior art, the flatness of the fingertip sheet is mainly ensured by improving the machining accuracy. However, in actual operation, the impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16F16J15/26
Inventor 罗健周连杰肖育祥胡海涛汪凯吴瑕徐鹏飞赵亚飞郭永庆
Owner CHINA GAS TURBINE ESTAB
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