Online ultrasonic array detection system for surface defects of fan spindle

Abstract

The invention discloses an online ultrasonic array detection system for surface defects of a fan spindle. The system comprises a computer, a router, an ultrasonic excitation receiving device, a multichannel gate and piezoelectric sensors, wherein the piezoelectric sensors are arranged on the end surface of the spindle in an array and used for detecting the surface defects of the spindle; the computer sends a detection instruction to the ultrasonic excitation receiving device through the router, the ultrasonic excitation receiving device controls the multichannel gate to sequentially gate and excite piezoelectric array elements in the piezoelectric sensor array, receives echo signals from the piezoelectric array elements and wirelessly transmits the echo signals back to the computer through the router, and thus, detection is realized. The problem about online detection of the surface defects of the fan spindle is solved, and wireless and remote ultrasonic array detection of the surface defects of the spindle is realized.

Description

technical field [0001] The invention relates to an online detection system, in particular to an ultrasonic array on-line detection system for surface defects of a fan main shaft, belonging to the field of non-destructive testing. Background technique [0002] As a clean and renewable energy, wind energy has attracted more and more attention. With the large-scale popularization of wind power generation, the operation status of wind turbines and their components is directly related to the safety and interests of national production. The main shaft in the fan is a rotary motion, and the main shaft is the main force-bearing part. Due to long-term work, fatigue defects and wear and corrosion are inevitable. Therefore, the safety detection of such structures not only helps to prevent safety accidents, but also avoids unnecessary economic losses. [0003] The main shaft of the fan is fixed to the nacelle through bearings, connected between the hub housing and the gearbox, and ins...

AI Technical Summary

Problems solved by technology

However, this invention does not involve the online detection of the spindle, nor does it involve the array detection method, and the device still needs manual participation in scanning for defects

[0006] Therefore, there is a lack of an online detection system for the main shaft of wind power in the prior art, which does not affect the normal operation of the wind turbine, but also can solve the defect detection problem of the main shaft of the wind turbine, and is convenient for remote detection according to the actual test environment

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