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    • 18. 发明授权
    • Optical tube inspection apparatus
    • 光管检测仪
    • US4752127A
    • 1988-06-21
    • US711421
    • 1985-03-13
    • Paolo R. Zafred
    • Paolo R. Zafred
    • G01N21/88F22B37/00G01B11/30G01N21/35G01N21/954G21C17/017G02B23/26
    • F22B37/003G01N21/954G21C17/017G01N2021/9546G01N21/35G01N21/3563
    • A tube inspection apparatus includes a probe which carries along the tube one or more infrared emitters and a plurality of infrared detectors. In one embodiment there is one emitter and in another embodiment the number of emitters equals the number of detectors. A cylindrical sleeve encircles a portion of the probe and has resilient fingers slidably frictionally engageable with the inner surface of the tube for centering the probe, equiangularly spaced-apart slots being formed in the sleeve to accommodate light transmission therethrough. Fiber optic bundles in the probe have their inner ends optically coupled to the emitters and detectors, with the outer ends being respectively disposed in alignment with the openings. A cam adjusting means is axially movable on a threaded rod for radially moving the outer ends of the fiber bundles to adjust their spacing from the inner surface of the tube. Preferably, each emitter is modulated for eliminating the effects of ambient light.
    • 管检查装置包括沿着管一个或多个红外发射器和多个红外检测器携带的探针。 在一个实施例中,存在一个发射器,在另一个实施例中,发射器的数量等于检测器的数量。 圆柱形套筒环绕探针的一部分并且具有可滑动地与管的内表面接合的弹性指状件,用于对准探针,等离子间隔开的槽形成在套筒中以适应透过其中的光透射。 探针中的光纤束具有光学耦合到发射器和检测器的内端,其外端分别设置成与开口对准。 凸轮调节装置可在螺杆上轴向移动,用于径向移动纤维束的外端,以调节它们与管内表面的间隔。 优选地,每个发射器被调制以消除环境光的影响。