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Coupling method of small-angle ultrasonic monitoring sensor of inservice wind power main shaft

A wind power spindle and small-angle technology, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and instruments. It can solve the problems of high processing difficulty, low yield, and long coupling agent time. problem, to achieve the effect of solving the problem of long-term coupling and small-angle ultrasonic detection

Inactive Publication Date: 2018-04-13
EDDYSUN (XIAMEN) ELECTRONICS CO LTD
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Problems solved by technology

Cracks on the outer surface of the main shaft are the key monitoring objects, and ultrasonic testing methods are usually used. According to the principle of ultrasonic testing, piezoelectric ultrasonic angle probes with small angles (such as 1°~3°) must be used, and this small angle piezoelectric ultrasonic angle probes The processing difficulty is extremely high, and the yield rate is very low. At present, the most commonly used method is to use a straight probe with a couplant combined with a small-angle plexiglass block to realize it indirectly. However, the couplant used in ultrasonic testing is prone to failure due to a long time, and there is a long-term coupling detection. problem
Therefore, as an in-service monitoring sensor, two problems must be solved: one is coupling, and the other is small angle

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  • Coupling method of small-angle ultrasonic monitoring sensor of inservice wind power main shaft

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Embodiment Construction

[0009] Examples such as figure 1 As shown, a coupling method of small-angle ultrasonic monitoring sensors for wind power main shafts in service is characterized in that a sound-conducting flexible wedge 1 is bonded and fixed on the detection surface of the ultrasonic straight probe 2, and the sound-conducting flexible wedge 1 The cross section is a small angle right triangle, the small angle is to control the angle range of the small acute angle 11 of the sound guiding flexible wedge 11 to 3 °, and the ultrasonic straight probe 2 is perpendicular to the long right angle of the sound guiding flexible wedge 1 On the other hand, the inclined surface of the sound guiding flexible wedge 1 is bonded and fixed on the detection surface of the monitored main shaft 3 as the detection surface, so that the gapless coupling function between the ultrasonic straight probe 2 and the monitored main shaft 3 detection surface is realized, and the ultrasonic straight probe is realized at the same ...

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Abstract

The invention discloses a coupling device of a small-angle ultrasonic monitoring sensor of an inservice wind power main shaft. By adopting an ultrasonic normal probe and a sound conducting flexible wedge with certain slope on the section, the problems of long-time coupling and small-angle ultrasonic detection are effectively solved.

Description

technical field [0001] The invention relates to a non-destructive testing method, in particular to a coupling method of a small-angle ultrasonic monitoring sensor for an in-service wind power main shaft. Background technique [0002] As a key component of wind power generation, the main shaft of wind power generation, any defect or damage on the main shaft may cause the failure and paralysis of the entire wind power project, so that it cannot operate normally, resulting in significant economic losses. The in-service safety monitoring of the main shaft becomes A very important, essential job. Cracks on the outer surface of the main shaft are the key monitoring objects, and ultrasonic testing methods are usually used. According to the principle of ultrasonic testing, piezoelectric ultrasonic angle probes with small angles (such as 1°~3°) must be used, and this small angle piezoelectric ultrasonic angle probes The processing difficulty is extremely high, and the yield rate is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/28
CPCG01N29/048G01N29/28G01N2291/023G01N2291/269
Inventor 林俊明卢超吴晓瑜赵晋成
Owner EDDYSUN (XIAMEN) ELECTRONICS CO LTD
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