Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of Selecting Turbine Flange Sealing Structure

A sealing structure and rim technology, which is applied in the direction of machines/engines, leakage prevention, mechanical equipment, etc., can solve the problems that the cooling air volume is not enough for cooling and sealing, and the thermal efficiency is reduced, so as to improve design efficiency, improve sealing effect, The effect of convenient process

Active Publication Date: 2022-03-25
CHINA UNITED GAS TURBINE TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The amount of cold air used for cooling and sealing should not be too much or too little, too much cold air will cause a decrease in thermal efficiency, and too little cold air will not be sufficient for cooling and sealing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of Selecting Turbine Flange Sealing Structure
  • Method of Selecting Turbine Flange Sealing Structure
  • Method of Selecting Turbine Flange Sealing Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0042] like figure 1 As shown, the turbine of the gas turbine includes a turbine casing 1 , a disk 2 , a plurality of stator blades 3 and a plurality of moving blades 4 . The wheel disc 2 , the plurality of stator blades 3 and the plurality of rotor blades 4 are all arranged in the turbine casing 1 , and the plurality of stator blades 3 are arranged on the inner wall of the turbine casing 1 in a surrounding manner. The end is provided with a static edge plate 5, and a plurality of moving blades 4 are arranged on the wheel disc 2 in a surrounding manner. The stationary rim plate 5 forms a turbine rim sealing structure for sealing...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for selecting a turbine rim sealing structure. The method for selecting a turbine rim sealing structure comprises the following steps: calculating the dimensionless blocking critical sealing flow represented by a semi-empirical coefficient K according to the characteristic parameters of mainstream hot gas c w.min , according to the maximum supply of sealed cold air q max Calculate the dimensionless maximum seal flow c max ; According to the dimensionless maximum sealing flow c max greater than the dimensionless lock-up critical seal flow c w.min , obtain the limitation of the semi-empirical coefficient K; select the turbine rim sealing structure according to the K value corresponding to each sealing structure and the limitation of the semi-empirical coefficient K. The method for selecting the turbine rim sealing structure of the present invention has a convenient process, can improve the design efficiency of the turbine rim sealing structure, and reduce the design period.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a method for selecting a turbine rim sealing structure. Background technique [0002] Gas turbine is a core power generation equipment with low emission and low pollution. The components in the turbine of a gas turbine mainly include a compressor, a burner and a turbine. The turbine vane works in the high-temperature mainstream gas. If the high-temperature mainstream gas enters the inside of the turbine disc chamber, it will endanger the safety of the whole machine. To this end, a small amount of high-pressure low-temperature cold air is usually extracted from the compressor, which can not only cool the wheel disk, but also seal the turbine rim to prevent the high-temperature mainstream gas from invading into the interior of the chamber. [0003] The amount of cold air used for cooling and sealing should not be too much or too little. Excessive amount of cold air will reduc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01D11/00F01D11/04
CPCF01D11/001F01D11/04
Inventor 刘润泽辛芳陈强
Owner CHINA UNITED GAS TURBINE TECH CO LTD