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Device and method for measuring longitudinal wave sound velocity at high temperature

A longitudinal wave and sound velocity technology, applied in the field of devices for measuring longitudinal wave sound velocity at high temperature, can solve the problems of chemical reaction, couplant volatilization, influence of measurement accuracy, etc., and achieves the effect of ensuring sensitivity, accurate measurement results, and strong operability

Pending Publication Date: 2021-06-04
XIAN THERMAL POWER RES INST CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sound velocity of longitudinal waves at room temperature is relatively easy to measure, but when the conventional contact method is used for measurement in high temperature environments, the echo attenuation of the ultrasonic transducer is very serious, and the couplant will volatilize or undergo chemical reactions, which will affect the measurement accuracy

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  • Device and method for measuring longitudinal wave sound velocity at high temperature
  • Device and method for measuring longitudinal wave sound velocity at high temperature

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0026] Such as figure 1 , the present invention is used to measure the device of longitudinal wave sound velocity under high temperature, comprises heating device 1, longitudinal wave sound velocity measurement test block 2 and ultrasonic longitudinal wave detection system; One end of longitudinal wave sound velocity measurement test block 2 is a heating end, and the other end is a detection end; heating The end has a stepped structure, such as a two-step step; the end surface of the detection end is parallel to the stepped surface of the stepped structure, and the heating end is connected to the heating device 1 . The ultrasonic longitudinal wave detection system includes an ultrasonic longitudinal wave transducer 3, an ultrasonic module 4 and an oscilloscope 5...

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Abstract

The invention discloses a device and a method for measuring longitudinal wave sound velocity at high temperature, and belongs to the technical field of sound velocity measurement. The device includes a heating device, a longitudinal wave sound velocity measurement test block and an ultrasonic longitudinal wave detection system, one end of the longitudinal wave sound velocity measurement test block is a heating end, and the other end of the longitudinal wave sound velocity measurement test block is a detection end; the heating end is of a step structure, the end face of the detection end is parallel to the step face of the step structure, the heating end is connected with a heating device, and the end face of the detection end is connected with an ultrasonic longitudinal wave detection system through a coupling agent layer. According to the invention, longitudinal wave sound velocity measurement at different preset temperatures can be completed by using an ultrasonic longitudinal wave detection system and a coupling agent at normal temperature; the operability is high, and the measurement result is accurate.

Description

technical field [0001] The invention belongs to the technical field of sound velocity measurement, and in particular relates to a device and method for measuring the sound velocity of longitudinal waves at high temperatures. Background technique [0002] Ultrasonic testing is one of the main methods of conventional nondestructive testing. It has a series of advantages such as high sensitivity, high detection efficiency, low cost and harmless to human body, and its application range is very wide. Ultrasonic testing is usually carried out using a contact method at room temperature, and the characteristics of the internal defects of the workpiece are judged by analyzing the echo signals. With the continuous maturity of ultrasonic testing technology, on-line testing and monitoring of high temperature equipment is an important development direction in the future. The speed of sound is an important parameter in ultrasonic testing, which has a great influence on the accuracy of de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H5/00
CPCG01H5/00
Inventor 吕一楠张红军孟永乐林琳朱婷吕游
Owner XIAN THERMAL POWER RES INST CO LTD
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