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1. 发明授权

US4159420A Apparatus for detecting oils and the like 失效
标题翻译：用于检测油等的装置
公开(公告)号：US4159420A
公开(公告)日：1979-06-26
申请号：US859461
申请日：1977-12-12
申请人： Akiyoshi Tsunoda
发明人： Akiyoshi Tsunoda
IPC分类号： G01M3/38 , G01F23/292 , G01M3/04 , G01F23/00 , G02B5/14 , G08B21/00
CPC分类号： G01M3/047 , G01F23/2921
摘要： An improved apparatus suitable for detecting the outflow of a liquid such as petroleum or the like and petrochemical products from a storage tank or pipe line thereof is disclosed. The detecting apparatus comprises a detecting element including a light transmitting path made of a transparent solid material having a refractive index larger than the refractive index of water through which the light is transmitted from a light source to a light detector. If the peripheral wall surface of the light transmitting path is wetted with a liquid to be detected which has a larger refractive index than the material forming the light transmitting path, the light being transmitted through the path leaks out of the path at the wetted area of the peripheral wall surface due to the difference of the refractive index between the liquid and the path. Therefore, the presence of the liquid to be detected contacting with the light transmitting path can be detected by detecting a change in the quantity of the light which has passed through the path.
摘要翻译：公开了一种适用于检测液体如石油等的流出物和来自储罐或其管线的石化产品的改进装置。该检测装置包括检测元件，该检测元件包括由透明固体材料制成的透光路径，该透明固体材料的折射率大于光从光源传输到光检测器的水的折射率。如果透光路径的周壁表面被具有比形成光传输路径的材料的折射率更大的待检测液体润湿，则透过该路径的光在湿润区域由于液体和路径之间的折射率的差异导致的周壁表面。因此，可以通过检测通过路径的光量的变化来检测与光传输路径接触的待检测液体的存在。

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