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Production method of dual-brush type sealing device

A sealing device, double brush technology, applied in the direction of engine sealing, leakage prevention, engine components, etc., can solve the problem of difficulty in ensuring that the brush wire angle meets the requirements, the brush seal sealing effect is not obvious, and the brush wire arrangement is not neat. and other problems, to achieve the effect of easy realization, good sealing effect and neat arrangement

Inactive Publication Date: 2009-05-13
SHENYANG LIMING AERO PARTS MFG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In order to solve the irregular, disordered and bent brush filaments in the existing brush seal device, and it is difficult to ensure that the angle of the brush filaments meets the requirements, and the sealing effect of this brush seal is not obvious, and the process method used is complicated

Method used

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  • Production method of dual-brush type sealing device
  • Production method of dual-brush type sealing device
  • Production method of dual-brush type sealing device

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Embodiment Construction

[0025] The present invention is further described in conjunction with accompanying drawing:

[0026] Such as figure 1 As shown, the program flow chart of the present invention includes the following steps: (1) winding the brush wire, winding the metal wire into a brush bundle, and cutting the brush bundle into small sections of a specified length, with an error of 0.1 to 0.5mm; (2) arranging Brush beams, arrange the brush beams between the upper plate and the lower plate, and the tangent line between the brush beams and the circle between the upper plate and the lower plate is 40°~53°; (3) Welding, welding the arranged brush beams on the upper plate Between the plate and the lower plate; (4) processing the inner hole, cutting off the excess length of the brush bundle. The metal wire adopts SG37A, and the upper and lower plates described above adopt GH626. (5) Weld the two seal assemblies together to form a duplex brush seal.

[0027] After the welding in step (3), the weldi...

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Abstract

A method for manufacturing a double brush sealing device belongs to the manufacturing field of an aeroengine brush sealing device and comprises the following steps: (1) brush wires are wound; metal filaments are wound to be brush bunches which are cut into cantlets that have the tolerance of 0.1-0.5mm; (2) the brush bunches are arranged between an upper plate and a lower plate, wherein, the upper plate and the lower plate are circular ring surfaces, and the angle formed between array of the brush bunches and the tangent of the circumference of the upper plate is 40-53 degrees; (3) welding, the arranged brush bunches are welded between the upper plate and the lower plate to form a seal assembly; (4) inner holes are processed, and the brush bunches in the inner hole of every seal assembly is resected; (5) the two seal assemblies are welded together to form the double brush sealing device. The method has the advantages that the metal filaments are contacted with a shaft all the time, so that the sealing effect is good, leakage is greatly reduced, and the performance of the engine is improved.

Description

technical field [0001] The invention belongs to the manufacturing field of aero-engine brush-type sealing devices, and in particular relates to a manufacturing method of a double-connected brush-type sealing device. Background technique [0002] The brush seal is an advanced sealing form used in turbomachinery such as aero-engines, and belongs to the contact seal. It is used to reduce the ineffective gas flow between the rotor part and the stationary part of the aeroengine. Instead of traditional grate seals, improve the performance of turbine and turbofan aero-engines. The existing brush seal structure is composed of a group of tightly bundled high-temperature-resistant metal wires with extremely fine diameters and inner and outer rings. Metal wires are required to be arranged neatly and with uniform arrangement density. But the sealing effect of this brush type seal is not good, the process is complicated, and the cost is high. Contents of the invention [0003] In o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F01D11/00F01D11/02F16J15/3288
Inventor 杨胜群石竖鲲赵玉坤吕泉郭红裴宇飞彭新卑喜敏刘明铭王博黄晨华
Owner SHENYANG LIMING AERO PARTS MFG
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