Underwater high-pressure ultrasonic probe

Abstract

The invention discloses an underwater high-pressure ultrasonic probe. The underwater high-pressure ultrasonic probe comprises a probe shell, wherein a probe wafer is arranged in the front part of the probe shell, a space between the rear part of the probe wafer and the probe shell is filled with a damping block, a pressure separation delay block is arranged on the front part of the probe wafer in an attaching manner, and the pressure separation delay block is a pressure-resisting part; the middle part of the pressure separation delay block is internally cut to form a sealing clamping shoulder, the pressure separation delay block is divided by the sealing clamping shoulder into a combination part which is close to the probe wafer and an extension part which is far away from the probe wafer, the front end of the probe shell pushes against the sealing clamping shoulder so as to enable the combination part to stretch into the probe shell, the combination part is matched with the probe shell in a sealing manner through a sealing part, and the extension part pushes the sealing clamping shoulder towards the end part of the probe shell through external water pressure, so that the self sealing of the sealing clamping shoulder and the probe shell can be realized. The underwater high-pressure ultrasonic probe has the advantages that the influence of high water pressure working environment can be effectively overcome, ultrasonic detection can be carried out under the high water pressure, the structure is reasonable, and the use is convenient.

Description

technical field [0001] The invention relates to the technical field of ultrasonic detection, in particular to an ultrasonic detection device in a high water pressure environment, specifically an underwater high-pressure ultrasonic probe. Background technique [0002] Non-destructive ultrasonic testing technology is now widely used in the detection of various metal materials and some non-metallic materials. Compared with the traditional X-ray detection method, its biggest advantage is that it has no pollution to the testing environment, is safe for testing personnel, and has high detection resolution. High rate, fast detection, etc. [0003] The basic principle of ultrasonic testing is to couple the high-frequency mechanical vibration waves generated by the probe to the inside of the workpiece to be tested, and to determine the position and size of the internal defects of the workpiece by receiving and analyzing its reflected echo. The "coupling" methods usually include: Dir...

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Problems solved by technology

[0006] Working in a high water pressure environment, the probe must withstand huge water pressure in all directions, and must ensure that the ultrasonic characteristics are basically unchanged, which cannot be achieved by ordinary probes. Under high water pressure environments, the shell will be fractured or the wafer will crack or the wafer will be compressed. Sensitivity dropped significantly, unusable, etc.

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