Cooling type vibration signal sensing device

A technology of vibration signals and sensing devices, which is applied to measuring devices, electrical devices, instruments, etc., can solve problems such as limiting the application of accelerometers, and achieve the effect of improving reliability

Active Publication Date: 2015-05-27
AECC COMML AIRCRAFT ENGINE CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operating temperature of this type of preamplifier components is currently limited to below 350°F, and the temperature in many parts of the engine is higher than this value
Therefore, the complex temperature environment of the engine limits the application of accelerometers with preamplifiers

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
  • Cooling type vibration signal sensing device
  • Cooling type vibration signal sensing device
  • Cooling type vibration signal sensing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] The present invention aims at the problems existing in the source signal transmission of the existing vibration sensor, and designs a cooling type vibration signal sensing device. The core idea is to introduce cooling air into the accelerometer chamber, and the Cooling keeps it within the operating temperature range, thereby extending the ability of this cooled vibration signal sensing device with preamplifier to adapt to complex temperature environments at multiple locations within the engine.

[0027] like Figure 4 Shown is a schematic structural view of an embodiment of the cooling type vibration signal sensing device of the present invention. In this embodiment, the cooled vibration signal sensing device includes: a piezoelectric accelerometer 1, a preamplifier 2, a rectifier ring 3, a cable 4 and an air d...

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 relates to a cooling type vibration signal sensing device. The cooling type vibration signal sensing device comprises a piezoelectric accelerometer, a preamplifier and a cable, wherein the preamplifier is arranged in an accelerator chamber of the piezoelectric accelerometer, and the preamplifier is electrically connected with both the piezoelectric accelerometer and the cable; the cooling type vibration signal sensing device further comprises an air guide tube and a rectification ring, the preamplifier and the cable are respectively arranged on two sides of the rectification ring and are electrically connected through the rectification ring, the cable is sleeved by the air guide tube, a channel for allowing cooling air to flow is formed between the air guide tube and the cable, and an exhaust hole for exhausting the cooling air which is fed into the accelerator chamber through the air guide tube is formed in the accelerator chamber. The cooling type vibration signal sensing device provided by the invention can expand a working range of a piezoelectric vibration sensor with the preamplifier.

Description

technical field [0001] The invention relates to aero-engine state monitoring technology, in particular to a cooling type vibration signal sensing device. Background technique [0002] Engine Vibration Management system (EVM for short), as a part of the engine condition monitoring system, includes all hardware systems and software systems for monitoring and analyzing engine vibration. Most of the currently used EVM systems mainly use one or more vibration sensors installed in certain parts of the engine to detect the vibration caused by rotor imbalance. After the detection signal is received and processed by electronic processing devices with different degrees of complexity, it Crew display or relay to other onboard surveillance equipment. The accuracy and fidelity of an EVM system is largely dependent on the quality of the signal source, which in turn depends primarily on the characteristics of the sensor. The most commonly used vibration sensor at present is a piezoelectr...

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): G01M15/12G01H11/08
Inventor 蔡宁泊佘云峰侯乃先
Owner AECC COMML AIRCRAFT ENGINE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap