Ultrasonic probe assembly

Abstract

According to the ultrasonic probe assembly, a wear-resisting plate and a film sealing plate are hollow, a plurality of screw holes are evenly distributed in the peripheries of the wear-resisting plate, the film sealing plate, a water film and a detection shoe, the film sealing plate is arranged at the bottom of the wear-resisting plate, the water film is arranged at the bottom of the film sealing plate, and the probing shoe is arranged at the bottom of the water film. A cavity is formed in the probing shoe, a probe is fixed in the cavity, and the wear-resisting plate, the film sealing plate, the water film and the probing shoe are fixedly connected through screws; the ultrasonic probe assembly has the advantages that stable flaw detection sensitivity of equipment is guaranteed, the false alarm rate is reduced, the corrosion speed of a cavity is slowed down, and the replacement period of a film is prolonged; the re-adjustment frequency of the equipment is reduced, and the adjustment time is shortened; the probe cleaning and maintaining process and difficulty of an operator are simplified; the production cost is reduced and the production efficiency is improved; the silica gel film has good sound transmission and good elasticity, and the probing shoe is good in sealing performance after being filled with water, easy to process and manufacture, free of reaction with water after being used for a long time and not prone to being corroded by grease.

Description

technical field [0001] The invention relates to the field of ultrasonic flaw detection equipment, in particular to an ultrasonic probe assembly. Background technique [0002] One of the drilling tools widely used in the petroleum industry - drill pipe, the drill pipe body bears a large alternating load during the drilling process, and the force is complicated during use, which requires that the quality of the drilling tool be ensured before going downhole. The non-destructive testing of the pipe body adopts automatic pipe body ultrasonic flaw detection equipment, and the drill pipe body ultrasonic flaw detection equipment uses the liquid invasion method to carry out nondestructive testing on the drill pipe body. The core detection component of the drill pipe body liquid invasion method ultrasonic flaw detection equipment is the probe. The sound-permeable rubber membrane of the probe element is encapsulated in a closed cavity filled with water. A large number of air bubbles a...

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Problems solved by technology

[0002] One of the drilling tools widely used in the petroleum industry - drill pipe, the drill pipe body bears a large alternating load during the drilling process, and the force is complicated during use, which requires that the quality of the drilling tool be ensured before going downhole. The non-destructive testing of the pipe body adopts automatic pipe body ultrasonic flaw detection equipment, and the drill pipe body ultrasonic flaw detection equipment uses the liquid invasion method to carry out nondestructive testing on the drill pipe body. The core detection component of the drill pipe body liquid invasion method ultrasonic flaw detection equipment is the probe. The sound-permeable rubber membrane of the probe element is encapsulated in a closed cavity filled with water. A large number of air bubbles are likely to be generated in the lower cavity of high-frequency ultrasonic waves, and the metal part of the inner cavity is easily corroded to generate impurities suspended in the filled medium, which greatly affects the detection. Sensitivity increases the false alarm rate of detection. In actual production, the cavity must be exhausted, cleaned, and corroded frequently. The skin-transparent rubber water film is also prone to aging and cracking. The equipment is re-adjusted, and the pressure is easily damaged due to frequent disassembly and assembly. Tight sealing membrane screws, 48 ​​compression sealing membrane screws, increased maintenance costs, but also increased actual complex operations, greatly affecting production efficiency

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