OBSERVING DEVICE FOR INSIDE OF LIQUEFIED NATURAL GAS TANK

PURPOSE:To provide a compact device which is placed on the upper portion of a small tank and can be inserted into a small upper opening and easily observe the whole inner surface of the tank. CONSTITUTION:A device for observing the inside of an LNG tank includes a fiberscope portion 12 having an ima...

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Bibliographische Detailangaben
Hauptverfasser: KOYAMA HIROYOSHI, TANAKA KOJI, SUYAMA HIROJI, SANADA KAZUO, TANAKA TAKAAKI, ITO TAKESHI, CHIGIRA SADAO, NUKUI KAZUMITSU
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To provide a compact device which is placed on the upper portion of a small tank and can be inserted into a small upper opening and easily observe the whole inner surface of the tank. CONSTITUTION:A device for observing the inside of an LNG tank includes a fiberscope portion 12 having an image fiber 2 and a lightguide fiber 6, a mirror head portion 10 provided at an end of the fiberscope portion to transfer a side image to the image fiber, a TV camera 14 connected to one end of the image fiber, an illumination light source 15 connected to one end of the lightguide fiber, a holddown member 21 to which the TV camera 14 or the like is secured, and a winding drum 22 freely rotatably mounted to the holddown member to wind the fiberscope portion to the outer periphery thereof.