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Ultrahigh-temperature-resistant electromagnetic ultrasonic transducer with double-coil structure

A double-coil structure, electromagnetic ultrasonic technology, applied in the use of ultrasonic/sonic/infrasonic, ultrasonic/sonic/infrasonic generation, using sound/ultrasonic/infrasonic to analyze solids, etc., can solve low temperature, poor signal-to-noise ratio, etc. problems, to avoid high temperature damage, reduce the low signal-to-noise ratio of ultrasonic signals, and reduce the effect of lifting distance

Pending Publication Date: 2022-04-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low temperature and poor signal-to-noise ratio in the high-temperature environment where the existing EMAT is suitable for detection, and to provide an electromagnetic ultrasonic transducer with a double-coil structure resistant to ultra-high temperature

Method used

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  • Ultrahigh-temperature-resistant electromagnetic ultrasonic transducer with double-coil structure

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Effect test

specific Embodiment approach 1

[0031] An electromagnetic ultrasonic transducer with a double-coil structure resistant to ultra-high temperature, including a water cooling system and a probe assembly, such as figure 1 and 2 As shown, the water cooling system includes an outer casing 1 and an inner casing 2 integrally connected, the outer casing 1 and the inner casing 2 are both cylindrical barrel structures, and the side walls of the outer casing 1 and the inner casing 2 are A cavity 3 is left between the cavity and the bottom, and one end of the upper surface of the cavity 3 is provided with a water inlet 31, and the other end is provided with a water outlet 32, and the water inlet 31 and the water outlet 32 ​​are all communicated with the water tank 5 through the water pipe 4, The water pipe 4 connected to the water inlet 31 is provided with a water pump 6, the bottom of the outer shell 1 is provided with a groove I21 upward, and the probe assembly includes an excitation coil 7 and an eddy current coil 8, ...

Embodiment 1

[0048] Since the excitation magnetic field is mainly in the horizontal direction, the combination of the excitation coil 7 and the eddy current coil 8 generates a transverse wave, and 45# steel is used as the test object to verify the feasibility of the ultra-high temperature resistant EMAT water cooling system.

[0049] In the experiment, the heating furnace was set to be heated to the specified temperature for 20 minutes. After holding the heat for 20 minutes, the echo signal was collected from the tested block 11. The echo signal obtained by the experiment result was as follows: Figure 8 As shown, the temperature in the figure refers to the temperature in the furnace cavity, and the temperature of the tested block 11 is slightly lower than the temperature in the furnace cavity, which is due to the local cooling of the tested block 11 by the water cooling system. Experiments show that the probe of the electromagnetic ultrasonic transducer with ultra-high temperature resistan...

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Abstract

An electromagnetic ultrasonic transducer with an ultrahigh-temperature-resistant double-coil structure belongs to the technical field of electromagnetic ultrasonic nondestructive testing, and adopts the specific scheme that the electromagnetic ultrasonic transducer comprises a water cooling system and a probe assembly, the water cooling system comprises an outer shell and an inner shell which are integrally connected, and a cavity is reserved between the outer shell and the inner shell; the upper surface of the cavity is provided with a water inlet and a water outlet which are communicated with the water tank through water pipes, the water pipe connected with the water inlet is provided with a water pump, and the bottom of the outer shell is upwards provided with a groove I. The probe assembly comprises a magnet exciting coil and an eddy current coil, the eddy current coil is arranged in the groove I, and the magnet exciting coil is arranged in the inner shell. The central axes of the excitation coil and the eddy current coil coincide. The high-temperature-resistant EMAT probe can work for a long time in the environment of 1000 DEG C, real-time monitoring of a detected object is achieved, the high-temperature-resistant performance of the EMAT probe is improved, and the high-temperature-resistant EMAT probe is suitable for the fields of high-temperature metal material detection and the

Description

technical field [0001] The invention belongs to the technical field of electromagnetic ultrasonic nondestructive testing, and relates to an electromagnetic ultrasonic transducer, in particular to an electromagnetic ultrasonic transducer with an ultra-high temperature resistant double coil structure. Background technique [0002] Metal is an important material widely used in aerospace, shipbuilding, petrochemical and other industries. It operates at high temperatures in many industries, including metallurgical manufacturing, power generation, and more. Therefore, it is necessary to detect metal materials at high temperatures. In the process of industrial operation and production, it is very important to use non-destructive testing methods to detect defects and damages in the process of production and processing in time; continuous monitoring at high temperature can avoid time and economic losses caused by downtime and reduce costs , to maximize the benefits of the enterpris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/11G01N29/22G01N29/24G01N29/34G01B17/02H05K7/20
CPCG01N29/041G01N29/228G01N29/2412G01N29/11G01N29/343G01B17/02H05K7/20218H05K7/20272G01N2291/0234G01N2291/02854G01N2291/0421G01N2291/0422
Inventor 王淑娟李茜葛宇航梁宝
Owner HARBIN INST OF TECH
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