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    • 7. 发明授权
    • Temperature abnormality detecting structure for fluid pipe
    • 流体管温度异常检测结构
    • US5308162A
    • 1994-05-03
    • US15996
    • 1993-02-10
    • Kazuo AmanoShotaro Yoshida
    • Kazuo AmanoShotaro Yoshida
    • G01M3/00G01M3/04G01J5/08G01R31/08
    • G01M3/047G01M3/002
    • A temperature abnormality detecting structure for a fluid pipe detects a temperature abnormality location by laying an optical fiber serving as a temperature detecting portion of a Ramam scattering optical fiber distribution type temperature sensor along a fluid pipe. The fluid pipe is divided into a plurality of sections in the longitudinal direction, independent optical fibers are laid along the fluid pipe in the respective sections. A portion of the optical fiber laid along one of the adjacent sections is superposed to be laid on a portion of the optical fiber laid along the other of the adjacent sections in the vicinity of each of the respective boundaries of the sections. Since the portion of the optical fiber laid along the pipe of one of the two adjacent sections is superposed on the portion of another optical fiber laid along the pipe of the other of the adjacent sections, if an abnormal temperature change occurs due to a trouble such as leakage or outflow of the fluid from the pipe in the boundary area, the temperature change peak position, i.e., the abnormality occurrence locations is detected by the two different optical fibers. Thus, the detecting accuracy is remarkably enhanced as compared with a case wherein the abnormality is detected by only one optical fiber.
    • 用于流体管的温度异常检测结构通过沿着流体管布置用作拉姆马斯散射光纤分布型温度传感器的温度检测部分的光纤来检测温度异常位置。 流体管在长度方向上被分成多个部分,独立的光纤沿着各个部分中的流体管铺设。 沿着相邻部分之一布置的光纤的一部分被重叠放置在沿着各部分的各个边界附近的相邻部分中的另一个布置的光纤的一部分上。 由于沿着两个相邻部分中的一个的管道布置的光纤的部分叠置在沿着另一个相邻部分的管道放置的另一光纤的部分上,如果由于诸如此类的故障而发生异常温度变化 由于流体从边界区域中的管道泄漏或流出,所以通过两根不同的光纤检测温度变化峰值位置,即异常发生位置。 因此,与仅通过一根光纤检测到异常的情况相比,检测精度显着提高。
    • 10. 发明授权
    • Method for manufacturing a stranded conductor constituted of insulated
strands
    • 用于制造由绝缘线构成的绞合导体的方法
    • US4411710A
    • 1983-10-25
    • US328592
    • 1981-11-23
    • Masataka MochizukiMichio TakaokaTsuneaki MoutaiShotaro YoshidaKazuo Watanabe
    • Masataka MochizukiMichio TakaokaTsuneaki MoutaiShotaro YoshidaKazuo Watanabe
    • H01B5/08H01B13/16C23C1/08
    • H01B13/16H01B5/08Y10S118/19Y10S174/33
    • A method is disclosed in which an insulating film of an oxide of metal, of which a stranded conductor (30) is made, is formed on the surface of all strands in a stranded conductor, while the stranded conductor is held in the stranded form. In a step of oxidation-treating the strands of an electric cable the pressure of an oxidation treatment solution at the outer portion of the stranded conductor immersed therein is made higher than the pressure in the inner portion of the stranded conductor (30), causing the oxidation treatment solution (48) to be adequately penetrated from the outer portion into the inner portion of the stranded conductor to permit a desired oxide film to be formed on the surface of all the strands in the stranded conductor. In order to more facilitate the penetration of the oxidation treatment solution (48) wholly into the interior of the stranded conductor (30) and the more facilitate an oxidation reaction, vibrations are, in addition to this method, imparted to the stranded conductor (30) in the oxidation treatment step (40) to cause the untwisting of the stranded conductor (30) to be effected to some extent, while the stranded conductor being heated is entered into this step.
    • PCT No.PCT / JP81 / 00076 Sec。 371日期1981年11月23日 102(e)1981年11月23日日期PCT提交1981年4月2日PCT公布。 公开号WO81 / 02944 日本公开1981年10月15日。一种方法,其中在绞合导体中的所有股线的表面上形成金属氧化物的绝缘膜,其中制成绞合导体(30),而绞合导体 被搁置的形式。 在对电缆的线进行氧化处理的步骤中,将浸入其中的绞线的外部的氧化处理溶液的压力设定得高于绞合导体(30)的内​​部的压力, 氧化处理溶液(48)从外部充分穿透到绞合导体的内部,以允许在绞合导体中的所有绞线的表面上形成所需的氧化物膜。 为了更方便地将氧化处理溶液(48)全部渗透到绞合导体(30)的内​​部,并且更有利于氧化反应,除了该方法之外,还向绞合导体(30)施加振动 ),使得在加热的绞合导体进入该步骤的同时,使绞合导体(30)的解捻一定程度地进行。