A composite detection underwater robot welding seam defect detection device

Abstract

The invention relates to a compound detection type underwater robot weld defect detecting device. The weld defect detecting device is used for detecting and locating underwater weld detects and the specific positions and providing accurate data for ocean platform maintenance. According to the technical scheme, a body is composed of an imitation torpedo streamline shell, a threaded telescopic connecting rod system, a steering gear system and a connecting rod opening and closing system, a threaded telescopic connecting rod is installed at the upper end of the shell, a CCD camera for collecting image signals is installed at the top end of the threaded telescopic connecting rod, the connecting rod opening and closing system is installed at the front end of the shell, and an ultrasonic array probe is installed at the front end of the connecting rod and used for collecting ultrasonic scanning signals; starting and closing of two detecting devices are controlled by a controller; a signal analyzing and locating system is arranged in the shell and used for analyzing, processing and calculating the signals; when defect feature waves are detected, a GPS location module transmits the coordinate position to a storage to be recorded, and the purpose of detection is achieved. The compound detection type underwater robot weld defect detecting device can improve detection accuracy and safety, is high in controllability and reduces operation difficulty.

Description

technical field [0001] The invention relates to a compound detection for underwater weld defects on ocean platforms, which is a compound detection underwater device that utilizes screw thread expansion and connecting rod opening and closing structure to realize mechanical movement, and utilizes the combined effect of image signals and ultrasonic array probes to achieve the purpose of detection. The lower robot weld seam defect detection device is used in the field of offshore oil exploration and development. Background technique [0002] With the rapid development of science and technology, the demand for energy is also increasing. The ocean, which accounts for 71% of the earth's surface, is the four major strategic spaces for human survival and development—the second largest space after land, sea, air, and sky. It is the strategic development of energy, biological resources, and metal resources. The base is not only the most realistic at present, but also the space with th...

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Problems solved by technology

The "Haima" underwater robot developed by Shanghai Jiaotong University can realize submarine operations. The disadvantage is that the cable structure used limits the range of activities; the "Bluefin Tuna-21" autonomous underwater vehicle developed by Bluefin Robotics of the United States The fully enclosed structure uses image signals for underwater detection. The disadvantage is that the detectable area of ​​underwater image signals is limited due to the underwater environment; the deep sea electromagnetic field detection system device (Chinese patent: 2016108261475) uses the electromagnetic field detection method, and the disadvantage is that it is autonomously controlled. Not strong, and restricted by the cable area

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