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

Absolute pressure fiber fabry-perot silicon carbide heat-resistant aviation pressure sensor

A Faper silicon carbide and pressure sensor technology, which is used in the manufacture of aviation pressure sensors and the field of absolute pressure fiber Faber silicon carbide high temperature pressure sensors, which can solve the problems of inability to realize dynamic monitoring of pressure changes, high working temperature, and achieve temperature drift. The effect of low characteristic, fast response speed and high measurement accuracy

Active Publication Date: 2018-11-06
BEIHANG UNIV +2
View PDF18 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the working temperature in areas such as the combustion chamber of aero-engines is higher than 1000°C, and the indirect measurement method of placing pressure sensors in low-temperature areas is currently commonly used, which cannot realize dynamic monitoring of pressure changes

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
  • Absolute pressure fiber fabry-perot silicon carbide heat-resistant aviation pressure sensor
  • Absolute pressure fiber fabry-perot silicon carbide heat-resistant aviation pressure sensor
  • Absolute pressure fiber fabry-perot silicon carbide heat-resistant aviation pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] The full SiC structure sensing head designed by the present invention is applied to the measurement of dynamic pressure and flow field characteristics in the high-temperature area of ​​the aero-engine. In order to be installed with the devices in the high-temperature area of ​​the aero-engine, a molybdenum package seat 5 and a molybdenum package body are specially designed. 6. The SiC sensing diaphragm 1 and SiC substrate 2 are installed under the zirconia base 3, one end of the sapphire optical fiber 4 is bonded to the SiC substrate 2, and the zirconia base 3 is installed in the countersunk cavity 5C of the molybdenum package base 5 Among them, a molybdenum package body 6 is threadedly connected to the bottom of the molybdenum package base 5;

[0105] According to the sensor obtained in Example 1, the pressure measurement is carried out in a high-temperature environment. The ambient temperature is 1000 ° C, the measurement range is 0-1 MPa, and the Fappon cavity length...

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention discloses an absolute pressure fiber fabry-perot silicon carbide heat-resistant aviation pressure sensor. A sensing head in the sensor employs a total SiC structure of a siliconcarbide sensing mebrane and a silicon carbide substrate to achieve vacuum fabry-perot cavity structure through direct binding; the sensor provided by the invention comprises a silicon carbide sensingmebrane, a silicon carbide substrate, optical fibers, a molybdenum package seat and a molybdenum package body; the SiC sensing mebrane and the SiC substrate are installed below a zirconium oxide substrate, one end of the optical fibers is bonded on the SiC substrate, the zirconium oxide substrate is installed in a countersunk head cavity of the molybdenum package seat, and the molybdenum package body is in threaded connection with the lower portion of the molybdenum package seat; and the other end of the optical fibers passes through a B center through hole on the molybdenum package seat. Theabsolute pressure fiber fabry-perot silicon carbide heat-resistant aviation pressure sensor is suitable for the in-situ real-time measurement of the aviation engine high-temperature dynamic pressure and flow field features, and is miniaturized, high in precision and resistant to electromagnetic interference.

Description

technical field [0001] The invention relates to a pressure sensor, more particularly to an absolute pressure fiber-optic silicon carbide high-temperature-resistant pressure sensor, which belongs to the technical field of aviation pressure sensor manufacturing. Background technique [0002] Aeroengine technology is known as the "Pearl in the Crown" of modern industry. It is an important symbol of a country's technological, industrial, economic and national defense strength, and its performance determines the performance of the aircraft. With the development of aero-engines towards high boost ratio, high turbine inlet temperature, high thrust-to-weight ratio, and high reliability, how to realize the measurement of dynamic pressure and flow field characteristics in high-temperature areas of aero-engines under complex and changeable conditions, so as to further It is extremely important to grasp its changing law to realize the control and adjustment of the engine. However, the ...

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): G01L23/06
CPCG01L23/06
Inventor 蒋永刚李健张德远黄漫国刘德峰梁晓波
Owner BEIHANG 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