Ultrasonic measuring probe suitable for on-line detection at high temperature

A technology for measuring probes and ultrasonic waves, applied to measuring devices, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., can solve problems such as poor signal-to-noise ratio, and achieve low cost, convenient implementation, and simple structure.

Pending Publication Date: 2018-09-11
河北珠峰仪器仪表设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to solve the contradiction problem that the higher the temperature is, the longer the heat dissipation rod is required and the worse the signal-to-noise ratio is when the ultrasonic n

Method used

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  • Ultrasonic measuring probe suitable for on-line detection at high temperature
  • Ultrasonic measuring probe suitable for on-line detection at high temperature

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Experimental program
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Effect test

Embodiment 2

[0019] like figure 2 As shown, an ultrasonic measurement probe suitable for on-line detection at high temperature includes at least a support 1, a transducer cavity 3 and an ultrasonic transducer 4, the ultrasonic transducer 4 is connected in the transducer cavity 3, and the ultrasonic There is a waveguide 2 between the transducer 4 and the support 1, and the front end of the waveguide 2 is fixed to the support 1; the rear end of the waveguide 2 is connected to the ultrasonic transducer 4.

[0020] The waveguide 2 is made of composite material. The composite material is composed of a sound-conducting core material and a heat sink. The sound-conducting core material has a small sound resistance, is convenient for wave transmission, and has a large thermal resistance; the heat sink has good heat dissipation.

[0021] Fin-type heat sinks 6 are arranged around the waveguide 2 .

Embodiment 3

[0023] like figure 1 As shown, on the basis of Embodiment 1, the end of the sealed cavity 8 close to the ultrasonic transducer 4 has a liquid injection port 7 through which the high temperature waveguide oil 5 is injected.

[0024] The coupling agent of the present invention belongs to the prior art and can be purchased directly from the market.

[0025] When detecting a high-temperature measured object, part of the heat of the measured object radiates to space through the fin-shaped heat sink 6 , and the heat transmitted through the high-temperature waveguide oil 5 is limited, and has little influence on the ultrasonic signal.

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Abstract

The invention relates to an ultrasonic measuring probe suitable for on-line detection at high temperature. The ultrasonic measuring probe at least comprises a support seat (1), an energy converter cavity (3) and an ultrasonic energy converter (4), wherein the ultrasonic energy converter (4) is connected in the energy converter cavity (3); a wave guide rod (2) is arranged between the ultrasonic energy converter (4) and the support seat (1); the front end of the wave guide rod (2) is fixed with the support seat (1); the back end of the wave guide rod (2) is connected with the ultrasonic energy converter (4). When an object to be tested at high temperature is detected, partial heat of the object to be tested is radiated and dissipated into the space through fin-shaped heat radiation pins; theheat conducted though high-temperature wave guide oil is limited; the change of high sound velocity generated by the high-temperature wave guide oil in sound waves cannot be influenced. The structureis simple; the realization is convenient; the cost is low.

Description

technical field [0001] The invention relates to an ultrasonic measuring probe suitable for on-line detection at high temperature. Background technique [0002] In the field of industrial testing, non-destructive testing has been widely used because it does not damage or affect the performance of the object to be tested. Ultrasonic non-destructive testing is currently a more widely used method, and ultrasonic probe sensors are the detection method. The key components that are in direct contact with the measured object are generally composed of piezoelectric ceramics. Due to the material characteristics of the piezoelectric ceramic itself, its Curie temperature point is low (about 120°C). In order to ensure the reliability of the transducer sensor, the working temperature of the probe is generally required to be controlled within 80°C. The working performance of the piezoelectric ceramic sensor is greatly affected, and even the sensor is damaged and cannot work. Industrial o...

Claims

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Application Information

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IPC IPC(8): G01N29/24
CPCG01N29/24
Inventor 陈建文杨秀丽
Owner 河北珠峰仪器仪表设备有限公司
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