公开(公告)号：US09383315B2

公开(公告)日：2016-07-05

申请号：US14351890

申请日：2012-10-10

Applicant: ABB Technology AG

Inventor： Luiz V. Cheim ,  Oleg Kouzmine ,  Robert Wueest

IPC: G01N21/59 ,  G01N21/33

CPC classification number: G01N21/59 ,  G01N21/33 ,  G01N2201/062 ,  G01N2201/084

Abstract: Sensor structure (16) is provided for online monitoring of levels of Furans in oil of a transformer tank. The sensor structure includes a UV light source (26), a filter (30) permitting only UV light of a certain wavelength range to pass, a window (32) permitting the filtered UV light to passes there-through and a UV light detector (36) to receive UV light that passes through the window. When the sensor structure is mounted to the transformer tank that is online so that the window is exposed to oil, and Furans in the oil are being monitored, the Furans will absorb UV light, creating a difference in UV light received by the light detector when compared to the UV light received by the light detector when the monitored oil has no Furans therein. The output signal of the light detector is substantially proportional to a total of Furans in the monitored oil.

Abstract translation: 传感器结构（16）用于在线监测变压器油油中呋喃水平。 传感器结构包括：紫外光源（26），仅允许一定波长范围的紫外光通过的滤光器（30），允许滤光的紫外光通过的窗口（32）以及UV光检测器 36）接收通过窗户的紫外线。 当传感器结构安装到在线变压器油箱，使窗户暴露于油中，并且油中的呋喃被监控时，呋喃将吸收紫外线，从而产生由光检测器接收的紫外光的差异 与被检测的油在其中没有呋喃时由光检测器接收的UV光相比。 光检测器的输出信号基本上与被监测油中呋喃总数成比例。

公开(公告)号：US20140291536A1

公开(公告)日：2014-10-02

申请号：US14351890

申请日：2012-10-10

Applicant: ABB Technology AG

Inventor： Luiz V. Cheim ,  Oleg Kouzmine ,  Robert Wueest

IPC: G01N21/59

CPC classification number: G01N21/59 ,  G01N21/33 ,  G01N2201/062 ,  G01N2201/084

Abstract: Sensor structure (16) is provided for online monitoring of levels of Furans in oil of a transformer tank. The sensor structure includes a UV light source (26), a filter (30) permitting only UV light of a certain wavelength range to pass, a window (32) permitting the filtered UV light to passes there-through and a UV light detector (36) to receive UV light that passes through the window. When the sensor structure is mounted to the transformer tank that is online so that the window is exposed to oil, and Furans in the oil are being monitored, the Furans will absorb UV light, creating a difference in UV light received by the light detector when compared to the UV light received by the light de tector when the monitored oil has no Furans therein. The output signal of the light detector is substantially proportional to a total of Furans in the monitored oil.

Abstract translation: 传感器结构（16）用于在线监测变压器油油中呋喃水平。 传感器结构包括：紫外光源（26），仅允许一定波长范围的紫外光通过的滤光器（30），允许滤光的紫外光通过的窗口（32）以及UV光检测器 36）接收通过窗户的紫外线。 当传感器结构安装到在线变压器油箱，使窗户暴露于油中，并且油中的呋喃被监控时，呋喃将吸收紫外线，从而产生由光检测器接收的紫外光的差异 与被监测的油在其中没有呋喃的情况下由光分离器接收的UV光相比。 光检测器的输出信号基本上与被监测油中呋喃总数成比例。