Method for determining position of crack of fan blade

A technology for fan blades and determination methods, which is applied to the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, instruments, and analysis materials, etc., which can solve the difficulty of increasing equipment maintenance, cannot detect cracks specifically, and cannot effectively avoid blade cracks Economical Loss and other issues, to achieve the effect of reducing unplanned production stoppage, fast diagnosis and reliable results
CN106501369AInactive Publication Date: 2017-03-15BEIJING UNIV OF TECH
4 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2017-03-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for determining a position of a crack of a fan blade. The method comprises S1, establishing a database of fan blade failure by simulation, S2, measuring first few order natural frequencies of an actual blade to be detected, and S3, inputting the actual blade data measured in the step S2 into the fault database established in the step S1, and detecting the crack position of the actual fan blade. The method uses a simulation method to compute the position of the blade crack, not only realize timely diagnosis of the fan blade crack, but also realize quantitative analysis of the crack position of the fan blade, has a fast diagnosis speed, produces a reliable result and provides a strong guarantee for the equipment maintenance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of equipment fault diagnosis, and more particularly relates to a method for determining the crack position of a fan blade. Background technique

[0002] The blade is the key component of the fan, which bears the comprehensive effects of centrifugal force, fluid power, vibration, temperature difference, medium, etc. Nowadays, fan blades are developing toward heavy load, high speed, and light weight, so that the working length and parameters of the blades are constantly increasing, and the working conditions are becoming more and more severe. When the blade is not designed properly, it may cause a major accident of mechanical failure. Accidents caused by blade failures are often catastrophic and cause huge losses. Blade failure seriously affects the economical and safe operation of fans. How to predict blade failure online in real time with a simple method and high accuracy is a problem that plagues the engi...

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