中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

34 records (took 0.024 seconds)

    FLOWMETER
    1.
    发明专利
    FLOWMETER 失效

    公开(公告)号：JP2001272259A

    公开(公告)日：2001-10-05

    申请号：JP2001071522

    申请日：2001-03-14

    Applicant: ABB RESEARCH LTD

    Inventor： BYATT ANTHONY ,  MATTER DANIEL ,  KLEINER THOMAS ,  PRETRE PHILIPPE

    IPC: G01F3/22 ,  G01F1/66 ,  G01F1/708 ,  G01N21/17

    Abstract: PROBLEM TO BE SOLVED: To provide a flow-rate measuring method, for a flow medium (M), in which defects of a ultrasonic measuring method is removed, and to provide a flowmeter. SOLUTION: A photoacoustic effect is used to measure the flow rate of the flow medium (M), especially a natural gas. A light emitter (1) is used to generate sound waves (S) detected by a sound detector (2), inside the flow medium (M). The light emitter (1) is not exposed to the flow medium (M) so much, as compared with a diaphragm which is used in the ultrasonic measuring method.

    GAMMA RAY DENSITY PROFILE SENSOR WITH PASSIVELY COOLED PIN PHOTODIODES
    2.
    发明申请
    GAMMA RAY DENSITY PROFILE SENSOR WITH PASSIVELY COOLED PIN PHOTODIODES 审中-公开
    被动伽马射线密度档传感器风冷PIN光电二极管

    公开(公告)号：WO0077502A3

    公开(公告)日：2001-03-29

    申请号：PCT/CH0000293

    申请日：2000-05-25

    Applicant: ABB RESEARCH LTD ,  BYATT ANTHONY ,  MATTER DANIEL ,  KLEINER THOMAS ,  PRETRE PHILIPPE ,  RUEEGG WALTER

    Inventor： BYATT ANTHONY ,  MATTER DANIEL ,  KLEINER THOMAS ,  PRETRE PHILIPPE ,  RUEEGG WALTER

    IPC: B01D17/02 ,  E21B43/34 ,  G01F23/288 ,  G01N9/24 ,  G01N23/04 ,  G01N23/08 ,  G01N23/12

    CPC classification number: B01D17/0208 ,  E21B43/34 ,  G01F23/288 ,  G01N9/24

    Abstract: The invention relates to a sensor (1) for measuring density profile using gamma rays (5), which is particularly suitable for measuring the level in oil separator tanks. The known measuring principle involves conducting locally resolved measurement of a density-dependent gamma ray transmission of a medium (6a, 6b, 6c) by a vertical linear array (13) of photomultipliers( 7) and using said measurement to determine the location of an oil/water (6c) boundary layer. According to the invention, the gamma ray density sensor (1) is equipped with PIN photodiodes (10) instead of photomultipliers (7). Means for passive cooling for said photodiodes (10) are also provided. This considerably simplifies the structure, operation and maintenance of the sensor and improves local resolution and service life of the sensor (1). Passive cooling can be easily realized by building a thermal bridge (12) between the warm photodiodes (10) and the cool ambient medium or the cool wall (14) of the separator tank. Usability of the sensor (1) under difficult operating conditions and in non-easily accessible locations is generally improved.

    Abstract translation: 本发明公开了一种测量使用伽马射线（5）的密度分布，这是特别适合于在Ölseparatortanks水平测量的传感器（1）。 该介质的密度依赖性伽马射线透射（6A，6B，6C）以空间分辨从光电倍增管（7）的垂直线性阵列（13）测得的，和用于确定一个边界层油/水的位置（图6c），则使用已知的测量原理是基于。 根据本发明的光电倍增管代替（7）配备有PIN光电二极管（10），并且是光电二极管（10）的伽玛射线密度传感器（1）包括用于被动冷却（12，14）的装置。 其特征在于所述传感器（1）可被大大简化和（1）提高了传感器的局部分辨率和使用寿命的安装，操作和维护。 被动冷却容易被温暖的光电二极管（10）和冷周围介质或设置在分离器的凉壁（14）之间的热桥（12）来实现的。 总体而言，所述传感器（1）的操作能力在困难的操作条件下得到改善，在难以到达的地方。

Patent Agency Ranking