Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ceramic matrix composite turbine guide blade with turbulent flow structures and preparation method thereof

A technology of turbine guide blades and composite materials, which is applied in the direction of blade support elements, mechanical equipment, machines/engines, etc., can solve the problems of difficult spoiler column array structure and shaping, to ensure cooling effect, improve temperature resistance, Effect of Good Physicochemical Compatibility

Active Publication Date: 2022-01-07
NORTHWESTERN POLYTECHNICAL UNIV
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a ceramic matrix composite turbine guide vane with a spoiler structure and its preparation method to solve the problem of using ceramic matrix composite materials as the main material of the turbine guide vane in the prior art. , the problem that its spoiler column array structure is difficult to be directly shaped in the fiber preform preparation stage

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
  • Ceramic matrix composite turbine guide blade with turbulent flow structures and preparation method thereof
  • Ceramic matrix composite turbine guide blade with turbulent flow structures and preparation method thereof
  • Ceramic matrix composite turbine guide blade with turbulent flow structures and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A ceramic matrix composite turbine guide vane with a spoiler structure, the preparation method of which comprises the following steps:

[0046] (1) Using electrode graphite as the raw material, design and prepare the inner mold according to the profile size of the inner cavity of the guide vane, and then design and prepare the vane pot 3 mold and the vane back 2 according to the profile dimensions of the vane pot and the vane back of the guide vane respectively Mold; wherein, the wall thickness of the inner mold, the 3 molds of the leaf pot and the 2 molds of the leaf back is 4mm, and a large number of vent holes with a diameter of 4mm are arranged on the inner mold, the 3 molds of the leaf basin and the 2 molds of the leaf back;

[0047] (2) Wrap the 2.5-dimensional silicon carbide fiber woven cloth on the outer surface of the inner mould, the thickness of which is 1.1 times the design thickness of the guide vane, and then cover it with the leaf pot 3 mold and the leaf ...

Embodiment 2

[0054] A ceramic matrix composite turbine guide vane with a spoiler structure, the preparation method of which comprises the following steps:

[0055] (1) Using electrode graphite as the raw material, design and prepare the inner mold according to the profile size of the inner cavity of the guide vane, and then design and prepare the vane pot 3 mold and the vane back 2 according to the profile dimensions of the vane pot and the vane back of the guide vane respectively Mold; wherein, the wall thickness of the inner mold, the leaf pot 3 mold and the leaf back 2 mold is 2.5mm, and there are a large number of air holes with a diameter of 3mm on the inner mold, the leaf basin 3 mold and the leaf back 2 mold;

[0056] (2) Wrap the two-dimensional plain weave carbon fiber woven cloth on the outer surface of the inner mold. The thickness of the winding is 1.05 times the design thickness of the guide vane, and then cover it with the leaf pot 3 mold and the leaf back 2 mold, and then use...

Embodiment 3

[0063] A ceramic matrix composite turbine guide vane with a spoiler structure, the preparation method of which comprises the following steps:

[0064] (1) Using electrode graphite as the raw material, design and prepare the inner mold according to the profile size of the inner cavity of the guide vane, and then design and prepare the vane pot 3 mold and the vane back 2 according to the profile dimensions of the vane pot and the vane back of the guide vane respectively Mold; wherein, the wall thickness of the inner mold, the 3 molds of the leaf pot and the 2 molds of the leaf back is 8mm, and a large number of vent holes with a diameter of 8mm are arranged on the inner mold, the 3 molds of the leaf basin and the 2 molds of the leaf back;

[0065] (2) Wrap the two-dimensional satin silicon carbide fiber woven cloth on the outer surface of the inner mould, the thickness of which is 1.2 times the design thickness of the guide vane, then cover it with the leaf pot 3 mold and the lea...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a ceramic matrix composite turbine guide blade with turbulent flow structures and a preparation method thereof. An inner cavity of the guide blade is provided with a plurality of columnar turbulent flow structures penetrating through a blade basin and a blade back, and the guide blade is made of a ceramic matrix composite. The invention further provides the preparation method of the blade. The preparation method comprises the following steps that a mold with vent holes is prepared firstly, then a fiber preform is prepared according to the mold, an interface layer and a ceramic matrix are sequentially deposited, after the mold is removed, the guide blade is machined to the design size, then through holes perpendicular to the blade profile are prepared in the turbulent flow column parts of a prepared blade body shell, then pins are inserted into the through holes, then a prepared assembly is connected in a homogeneous mode, and after machining and repairing, the ceramic matrix composite turbine guide blade with the turbulent flow structures is obtained. The temperature resistance of the guide blade prepared through the method is greatly improved, meanwhile, the structural weight is remarkably reduced, and the precision of the profile and the size and the cooling effect of the guide blade can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of gas turbine engine manufacture, in particular to a ceramic matrix composite material turbine guide vane with a spoiler structure and a preparation method thereof. Background technique [0002] In gas turbine engines such as aeroengines and gas turbines, increasing the gas temperature before the turbine is one of the most direct and effective methods to improve engine performance. For the turbine system of the engine, increasing the gas temperature before the turbine means increasing the design requirements for the turbine guide vane, which requires the turbine guide vane to be able to work for a long time in the harsh environment of high temperature, high pressure, and high-speed airflow. At present, the gas temperature in front of the turbine of advanced aero-engines can be as high as 2000K, and the commonly used high-temperature alloy turbine guide vanes are no longer suitable for use. Under harsh work...

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 Applications(China)
IPC IPC(8): F01D5/28F01D5/18C04B35/80C04B35/565C04B35/584
CPCF01D5/284F01D5/18C04B35/80C04B35/565C04B35/584C04B2235/5248C04B2235/5244C04B2235/77
Inventor 刘持栋张晰栗尼娜涂建勇刘小冲成来飞
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com