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

Manufacturing method of thick film thermocouple sensor based on plasma spraying

A technology for thermocouple sensors and manufacturing methods, applied to thermometers, coatings, instruments, etc. that are directly sensitive to heat and electric/magnetic elements, can solve the problem of large damage to the structure of turbine blades, difficulty in measuring the temperature of turbine blades, and inaccurate measurement Real-time monitoring and other issues to achieve significant military effects

Inactive Publication Date: 2018-09-14
AECC SICHUAN GAS TURBINE RES INST
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the present invention: In order to solve the problem of difficult temperature measurement of turbine blades, large damage to the structure of turbine blades, and incapable of accurate measurement and real-time monitoring

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
  • Manufacturing method of thick film thermocouple sensor based on plasma spraying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be described in further detail below by means of specific embodiments:

[0029] The invention provides a thick film thermocouple sensor based on plasma spraying, which firstly pretreats the surface of the turbine blade, removes various foreign matters on the surface of the blade, and provides a good base suitable for coating requirements. Next, Al was plasma sprayed 2 o 3 The powder material completes the preparation of the insulating coating. Afterwards, the positive and negative electrodes of the thermocouple functional layer are sprayed separately by plasma spraying, and finally the Al is sprayed again by plasma spraying. 2 o 3 The powder material completes the protection of the functional layer.

[0030] The plasma spraying-based thick-film thermocouple sensor manufacturing method includes pretreatment of the turbine blade surface, preparation of an insulating layer, preparation of a functional layer, preparation of a protective layer, ...

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 belongs to the technical field of aeronautic testing, and particularly relates to a manufacturing method of a thick film thermocouple sensor based on plasma spraying, which is a novel thermocouple structure form. According to the method provided by the invention, surface pretreatment is carried out on turbine blades of an aeroengine; then, a high-temperature-resistant insulating material namely an Al2O3 powdered material is melted by plasma spraying and then sprayed onto a turbine blade matrix to complete the preparation of an insulating layer; then, positive and negative electrodes of a thermocouple functional layer are sprayed respectively by a plasma spraying process so as to form firm metallurgical bonding between a coating and an insulating substrate and complete the preparation of a functional layer; and finally, a protective layer is prepared by using the high-temperature-resistant insulating material namely the Al2O3 powdered material again. According to the method provided by the invention, a thermocouple sensor is directly prepared on the surface of a turbine blade on the basis of a plasma spraying technology, and the surface temperature of a turbine rotor blade can be measured accurately and monitored in real time by using the thermocouple sensor.

Description

technical field [0001] The invention belongs to the technical field of aviation testing, and in particular relates to a method for manufacturing a thick-film thermocouple sensor based on plasma spraying. Background technique [0002] The turbine is one of the three key components of an aero-engine. In order to increase the thrust-to-weight ratio, an important technical approach is to increase the temperature in front of the turbine. Usually the gas temperature distribution at the outlet of the combustion chamber is not uniform, which is manifested as a gas flow with a high temperature core, which will further enhance the temperature non-uniformity at the turbine inlet. The turbine rotor blades bearing the huge heat load are still rotating at high speed in the hot high-temperature and high-pressure gas flow. The very large thermal gradient will cause the turbine blades to undergo severe thermal stress and strain, and the creep life of the turbine blades will be greatly 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
IPC IPC(8): C23C4/134C23C4/11G01K7/02
CPCC23C4/134C23C4/11G01K7/02
Inventor 徐毅熊庆荣石小江张浩程新琦
Owner AECC SICHUAN GAS TURBINE RES INST
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