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Method for improving sealing characteristic of labyrinth sealing structure and labyrinth sealing structure

A technology of grate teeth and characteristics, which is applied in the field of aero-engine/gas turbine design, to achieve the effect of enhanced sealing characteristics and simple implementation methods

Pending Publication Date: 2021-04-09
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of this application is to provide a method for improving the sealing characteristics of the grate tooth sealing structure and the grate tooth sealing structure, so as to solve or alleviate at least one problem in the background technology

Method used

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  • Method for improving sealing characteristic of labyrinth sealing structure and labyrinth sealing structure
  • Method for improving sealing characteristic of labyrinth sealing structure and labyrinth sealing structure
  • Method for improving sealing characteristic of labyrinth sealing structure and labyrinth sealing structure

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application.

[0028] In order to enhance the sealing characteristics of the grate teeth in the prior art while maintaining the characteristics of simple structure and reliable performance of the grate teeth, and realize the improvement of the sealing characteristics of the grate teeth on the premise of not affecting other system functions as much as possible, this paper The application proposes a method for enhancing the sealing characteristics of a grate tooth sealing structure and a grate tooth sealing structure.

[0029] The method for improving the sealing characteristics of the grate tooth sealing structure proposed by this application is to set the impeller 22 on the side of the intake air flow of the grate tooth tur...

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Abstract

The invention provides a method for improving a sealing characteristic of a labyrinth sealing structure. The method comprises the steps that at least one impeller which extends in the radial direction and protrudes out of the side face of a labyrinth rotating disc is arranged on the side face of the labyrinth rotating disc; and the impeller rotates along with the labyrinth rotating disc, inlet airflow entering a labyrinth seal is made to generate a circumferential speed by means of the impeller, and therefore the sealing characteristic of the labyrinth sealing structure can be improved. According to the method, under the condition that aerodynamic parameters such as the total pressure and the total temperature of airflow in front of and behind the labyrinth seal are not changed, the labyrinth sealing characteristic is enhanced, meanwhile, other system functions are not affected, and an implementation method is simple and feasible.

Description

technical field [0001] The application belongs to the technical field of aero-engine / gas turbine design, and in particular relates to a grate tooth structure for enhancing sealing performance. Background technique [0002] The grate tooth structure is one of the most important structural units in the flow path of aero-engines and gas turbines. It is mainly used to control the pressure distribution and flow distribution of the flow path. For sealing characteristics. With the continuous improvement of the performance of aero-engines, the sealing characteristics of the grate teeth have become one of the main factors affecting the performance of the engine. Low sealing leakage is conducive to improving performance indicators such as engine fuel consumption and pollutant emissions, thereby improving engine efficiency and reducing operation. cost. [0003] Such as figure 1 with figure 2 Shown is a typical grate seal structure, there is a radial grate 21 between the grate turn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D11/08F01D25/00
CPCF01D11/08F01D25/00
Inventor 吕艳丽梁义强柴军生
Owner AECC SHENYANG ENGINE RES INST
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