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Multifunctional brush type sealing experiment system

A technology of brush seal and experimental system, applied in the direction of using liquid/vacuum to measure liquid tightness, using electromagnetic means, instruments, etc.

Active Publication Date: 2013-05-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The influence of flow, friction and heat transfer in the brush seal on its working performance is comprehensive, intersecting and complex, and research at home and abroad is basically in the ascendant around these points

Method used

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  • Multifunctional brush type sealing experiment system
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  • Multifunctional brush type sealing experiment system

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Embodiment Construction

[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Such as figure 1 , Figure 1A , Figure 1B , Figure 1C , figure 2 , Figure 2A , Figure 2B , Figure 2C As shown, a multifunctional brush seal experiment system of the present invention includes an external support part, a rotating part, a brush ring part, a test chamber part, an observation window part, a radial moving part and a measuring part, wherein:

[0049] The external support part includes a base 3, a seat ring 4, a shell 5, and shell fastening screws 6, wherein: the base 3 is fixed on a stationary reference plane to support the entire experimental system; the seat ring The outer peripheral surface of 4 is matched with the inner peripheral surface of the base 3, and the groove on the left side of the outer circumference of the seat ring 4 is matched with the shell 5 to play a supporting and positioning role; ...

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Abstract

A multifunctional brush type sealing experiment system comprises an outside supporting part, a rotating part, a brush ring part, an experiment cavity part, an observation window part, a radial movement part and a measurement part. The multifunctional brush type sealing experiment system can simulate the high speed, namely, the angular speed is 10000 r / min-50000 r / min, the linear speed is 200 m / s-400 m / s and the high temperature is 300 DEG C-600 DEG C. The multifunctional brush type sealing experiment system has an aviation sealing working environment within radial eccentricity of 5 millimeters. An experiment brush ring and a rotor outer ring which contacts the experiment brush ring and has relative movement can be dismantled and replaced conveniently, and the pressure and the leakage amount of the system in a working state can be recorded. The brush wire movement characteristics and the surface temperature field distribution of the experiment brush ring in the working state can be observed conveniently, and the temperature and the stress strain inside an experiment brush ring brush wire bundle in the working state can be tested.

Description

technical field [0001] The invention belongs to the field of sealing technology and experimental equipment, in particular to a multifunctional brush-type sealing experimental system. Background technique [0002] The brush seal is a highly efficient contact seal developed in recent years, and its leakage is only 1 / 5 to 1 / 10 of the traditional comb labyrinth seal. The flexibility of the brush itself allows the transient serious eccentricity between the dynamic and static parts to maintain good sealing performance, which can significantly improve the sealing efficiency and reliability of the turbomachinery. Brush seal technology with excellent performance has been more and more used in rotating machinery such as aero-engines, ground and ship gas turbines. In addition, the brush seal also has the characteristics of small structure and light weight, which is very beneficial to reduce the weight of the engine, and is more in line with the requirements of aero-engines, especially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26G01K7/04
Inventor 李永健黄首清索双富杜凯冰高志王玉明
Owner TSINGHUA UNIV
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