Nuclear power evaporator heat transfer tube inner hole flaw detection device

Abstract

The invention relates to a flaw detection device for an inner hole of a heat transfer pipe of a nuclear-power evaporator. The device comprises a seat body and a probe mounted on the seat body, wherein a first concave table plane and a second concave table plane are formed on the side face of a cylinder of the seat body, four through holes are formed in the first concave table plane and the second concave table plane parallel to each other and include two through holes I and two through holes II, the two through holes I are used for mounting flaw-detection-point focusing probes, the two through holes II are used for mounting line focusing probes, and emitting ends of the probes are located at the second concave table plane; the axes of the two through holes II are intersected on one side of the first concave table plane and are intersected with the axis of the seat body, and the plane on which the axes of the two through holes I are located is vertical to the first concave table plane; the axes of the two through holes II are located on two sides of the axis of the seat body and are located in the same plane, and the plane on which the axes of the two through holes II are located is vertical to the first concave table plane. According to the device, the pipe wall can be simultaneously, axially and circumferentially detected, so that the problems that the detection is omitted, and cracks cannot be detected are avoided.

Description

technical field [0001] The invention relates to a flaw detection device for the inner hole of a heat transfer tube of a nuclear power evaporator. Background technique [0002] In recent years, nuclear power, as a highly efficient, clean and sustainable energy source, has been highly valued and widely concerned again. According to the current situation of the environment and the needs of sustainable development, nuclear energy has become one of the most practical and important alternative energy sources for ensuring energy supply security and adjusting the power structure in China, and is an important part of my country's modern energy industry construction. [0003] The steam generator is the hub of the primary and secondary loops of the PWR nuclear power plant, and the key equipment of the primary loop system. Its main function is to generate high-quality dry steam through the heat exchange of the tube bundle, and drive the turbogenerator unit to generate electricity throug...

AI Technical Summary

Problems solved by technology

Therefore, it is particularly important for the flaw detection of heat transfer tubes, but the inner diameter of the heat transfer tube is only 12mm, so it is difficult to detect flaws, and if there are omissions and cracks that cannot be detected, it will occur during the use of nuclear power evaporators. serious accident

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