Tube flaw detecting method using two probes
    3.
    发明授权
    Tube flaw detecting method using two probes 失效
    管探伤方法使用两个探针

    公开(公告)号:US06138514A

    公开(公告)日:2000-10-31

    申请号:US97734

    申请日:1998-06-16

    Abstract: A tube flaw detecting method detects a flaw portion in a heat exchanger tube constituting a boiler furnace wall using two probes, enabling one to carry out appropriate inspection work with a high efficiency. A transmitter probe and a receiver probe are juxtaposed in a circumferential direction, and an ultrasonic wave is transmitted from the transmitter probe to propagate. Repeated reflections occur at a tube inner surface and tube outer surface, and the wave is reflected at a crack extending in the circumferential direction to return, propagating likewise to be received by the receiver probe so that existence of the crack is confirmed. Thus, inspection work for a crack can be done with certainty with a simple arrangement.

    Abstract translation: 管缺陷检测方法使用两个探针来检测构成锅炉炉壁的热交换管中的缺陷部分,使得能够以高效率进行适当的检查工作。 发射器探头和接收器探头在圆周方向上并置,并且超声波从发射器探针发射传播。 重复的反射发生在管内表面和管外表面处,并且波在沿圆周方向延伸的裂纹反射,以类似地传播以被接收器探针接收,从而确认裂纹的存在。 因此,可以通过简单的安排确定地进行裂缝的检查工作。

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