Method and apparatus for measuring effects of exhaust gas recirculation deposits

    公开(公告)号:US20040149009A1

    公开(公告)日:2004-08-05

    申请号:US10762010

    申请日:2004-01-21

    IPC分类号: G01M013/00 F02M065/00

    摘要: A method and apparatus for measuring effects of various conditions on deposit build up in an exhaust gas recirculation system. The apparatus includes a testing jig having a main branch, a test branch, and a control branch. The test and control branches are connected, at an inlet and outlet, to the main branch. Each branch includes a flow control valve so that fluid flow through the test branch can be equalized with fluid flow through the control branch. A parameter of interest, such as temperature, oil, or humidity, in the test branch is modified, and the jig is connected to an engine exhaust, and the flows are equalized. Pressures and temperatures at various points in the jig are monitored and, after a predetermined period of time or when a pressure drop is sensed, the test is complete and the deposits in the test branch are compared with those in the control branch to determine the effect of the altered parameter.

    Method and apparatus for compressor control and operation via detection of stall precursors using frequency demodulation of acoustic signatures
    2.
    发明申请
    Method and apparatus for compressor control and operation via detection of stall precursors using frequency demodulation of acoustic signatures 有权
    通过使用声学签名的频率解调检测失速前体的压缩机控制和操作的方法和装置

    公开(公告)号:US20020184951A1

    公开(公告)日:2002-12-12

    申请号:US09878314

    申请日:2001-06-12

    IPC分类号: G01M013/00

    CPC分类号: F04D27/001

    摘要: An apparatus for monitoring the health of a compressor comprising at least one sensor operatively coupled to the compressor for monitoring at least one compressor parameter, a calibration system coupled to the at least one sensor, the calibration system performing time-series analysis on the monitored parameter, a processor system for processing and computing stall precursors from the time-series analyzed data, a comparator that compares the stall precursors with predetermined baseline data, and a controller operatively coupled to the comparator which initiates corrective actions to prevent a compressor surge and stall if the stall precursors deviate from the baseline data which represents predetermined level of compressor operability. The processor system preferably includes a frequency demodulator and a system for processing the frequency demodulated signals to extract stall precursor characteristics.

    摘要翻译: 一种用于监测压缩机健康的装置,包括至少一个可操作地耦合到压缩机的传感器,用于监测至少一个压缩机参数,耦合到至少一个传感器的校准系统,校准系统对所监测的参数进行时间序列分析 ,用于从时间序列分析数据处理和计算失速前体的处理器系统,将失速前体与预定基线数据进行比较的比较器,以及可操作地耦合到比较器的控制器,其启动校正动作以防止压缩机喘振和停止 摊档前体偏离表示压缩机可操作性的预定水平的基线数据。 处理器系统优选地包括频率解调器和用于处理频率解调信号以提取失速前兆特性的系统。

    Turbine blade fatigue life evaluating method, turbine blade creep elongation strain measuring apparatus, and turbine blade
    5.
    发明申请
    Turbine blade fatigue life evaluating method, turbine blade creep elongation strain measuring apparatus, and turbine blade 有权
    涡轮叶片疲劳寿命评估方法,涡轮叶片蠕变伸长应变测量装置和涡轮叶片

    公开(公告)号:US20040139809A1

    公开(公告)日:2004-07-22

    申请号:US10635494

    申请日:2003-08-07

    摘要: In order to provide a turbine blade fatigue life evaluating method for quantitively evaluating the fatigue life of a turbine blade, the turbine blade is determined to be within its fatigue life if the creep elongation strain in the longitudinal direction of the turbine blade is less than 0.5% of an initial length, and is determined to exceed its fatigue life if the creep elongation strain is 0.5% or more than the initial length. A turbine blade creep elongation strain measuring apparatus 20 comprises a first fixed end 21, a second fixed end 22, and a dial gauge 24. A dimension in the longitudinal direction is stamped on the surface of a turbine blade.

    摘要翻译: 为了提供一种用于定量评估涡轮机叶片的疲劳寿命的涡轮叶片疲劳寿命评估方法,如果涡轮叶片的纵向上的蠕变伸长应变小于0.5,则涡轮叶片被确定在其疲劳寿命内 如果蠕变伸长应变为初始长度的0.5%或更大,则确定其超过其疲劳寿命。 涡轮叶片蠕变伸长应变测量装置20包括第一固定端21,第二固定端22和千分表24.在涡轮叶片的表面上冲压沿纵向的尺寸。

    Performance measuring system and method for analyzing performance characteristics of rotating shafts
    6.
    发明申请
    Performance measuring system and method for analyzing performance characteristics of rotating shafts 失效
    性能测量系统及分析旋转轴性能特点的方法

    公开(公告)号:US20030010127A1

    公开(公告)日:2003-01-16

    申请号:US10152082

    申请日:2002-05-20

    IPC分类号: G01M001/22 G01M013/00

    摘要: A performance measuring system for a rotating shaft comprises a first annular support assembly to be coupled adjacent to a first end of a rotating shaft inwardly of associated shaft bearings. A second annular support assembly is to be coupled adjacent to a second end of a rotating shaft inwardly of associated shaft bearings. A third annular support assembly is to be coupled to the rotating shaft between the first and second support assemblies. A laser source is mounted on the first annular support assembly. A laser detector is mounted on the second annular support assembly. First and second magnetic sensors for detecting the Earth's magnetic field are mounted respectively on the first and second annular support assemblies. An accelerometer is mounted on the third annular support assembly for generating a fourth detection signal.

    摘要翻译: 用于旋转轴的性能测量系统包括第一环形支撑组件,该第一环形支撑组件与相关轴承的内部的旋转轴的第一端相邻。 第二环形支撑组件将与相关轴承的内部的旋转轴的第二端相邻。 第三环形支撑组件将在第一和第二支撑组件之间联接到旋转轴。 激光源安装在第一环形支撑组件上。 激光检测器安装在第二环形支撑组件上。 用于检测地球磁场的第一和第二磁传感器分别安装在第一和第二环形支撑组件上。 加速度计安装在第三环形支撑组件上,用于产生第四检测信号。

    Rolling stock diagnostic condition monitoring and on-line predictive maintenance
    7.
    发明申请
    Rolling stock diagnostic condition monitoring and on-line predictive maintenance 审中-公开
    滚动库存诊断状态监测和在线预测维护

    公开(公告)号:US20020144551A1

    公开(公告)日:2002-10-10

    申请号:US10057820

    申请日:2002-01-24

    IPC分类号: G01M013/00

    摘要: Rolling stock equipment is disclosed that has a predictive diagnostic system to enable condition-based maintenance. The rolling stock equipment has vibration transducers on key equipment. Data from the transducers is periodically sampled. The data is analyzed to determine if a fault condition exists by comparing the vibration signatures to defined threshold levels. If a threshold level is exceeded, a fault warning is produced to alert maintenance staff that preventative maintenance should be performed.

    摘要翻译: 公开了一种具有预测诊断系统以实现基于条件的维护的轧制设备。 机车车辆设备在关键设备上具有振动传感器。 来自传感器的数据被周期性地采样。 分析数据以通过将振动特征与定义的阈值水平进行比较来确定故障状况是否存在。 如果超过阈值水平,则会产生故障警告,警告维护人员应进行预防性维护。

    Sensor element for detecting a physical measuring variable between bodies exposed to high tribological strain
    9.
    发明申请
    Sensor element for detecting a physical measuring variable between bodies exposed to high tribological strain 有权
    用于检测暴露于高摩擦学应变的物体之间的物理测量变量的传感器元件

    公开(公告)号:US20040031311A1

    公开(公告)日:2004-02-19

    申请号:US10415894

    申请日:2003-09-08

    摘要: The invention proposes a sensor element (5) for detecting a physical measurement variable such as a pressure, a temperature, a capacitance, or a gap width between two bodies (10, 20) that move in relation to each other during operation and experience high tribological stress. In certain areas between the surfaces of the bodies (10, 20) that move in relation to each other, in a surface region of at least one of the bodies (10), a sensitive layer (13, 30), in particular a sensor segment (13), is provided, which is separated from the body (10) by an insulation layer (12). The insulation layer (12) has at least two component layers (31, 32), wherein one component layer (31) is a layer (31) with at least a low electrical conductivity in comparison to the sensitive layer (13) and wherein one component layer (32) is a layer with a higher tribological stress capacity in comparison to the component layer (31) with the comparatively low electrical conductivity and/or the insulation layer (12) is a layer that is at least essentially comprised of carbon, or contains carbon, oxygen, and silicon. The sensor element (5) proposed is primarily suited for detecting measurement variables in the contact region between lubricated components under high tribological stress.

    摘要翻译: 本发明提出了一种传感器元件(5),用于检测在操作期间彼此相对移动并且体验高的两个物体(10,20)之间的物理测量变量,例如压力,温度,电容或间隙宽度 摩擦学应力。 在相对于彼此移动的主体(10,20)的表面之间的某些区域中,在至少一个主体(10)的表面区域中具有敏感层(13,30),特别是传感器 (13),其通过绝缘层(12)与主体(10)分离。 绝缘层(12)具有至少两个组分层(31,32),其中与敏感层(13)相比,一个组分层(31)是至少具有低电导率的层(31),并且其中一个 与具有较低电导率的组分层(31)相比,组分层(32)是具有较高摩擦学应力能力的层,和/或绝缘层(12)是至少基本上由碳组成的层, 或含有碳,氧和硅。 提出的传感器元件(5)主要适用于在高摩擦学应力下检测润滑部件之间的接触区域中的测量变量。

    Machine and process for operating machine
    10.
    发明申请
    Machine and process for operating machine 失效
    机器和工艺机器

    公开(公告)号:US20030188583A1

    公开(公告)日:2003-10-09

    申请号:US10396345

    申请日:2003-03-26

    发明人: Eva Scheideler

    IPC分类号: G01M013/00

    CPC分类号: D21G9/0045 D21G1/008

    摘要: Machine and process for operating machine having at least one roll and an opposing surface arranged to form at least one nip. The machine includes at least one roll and an opposing surface arranged to form at least one nip. A sound measuring device is arranged to conduct sound measurements in at least one of an area of the at least one roll and an area of the at least one nip to monitor vibrations in the at least one roll and/or in the at least one nip. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

    摘要翻译: 具有至少一个辊和相对表面的操作机器的机器和工艺被布置成形成至少一个辊隙。 该机器包括布置成形成至少一个压区的至少一个辊和相对表面。 声音测量装置被布置成在所述至少一个辊的区域和所述至少一个辊隙的区域中的至少一个区域中进行声音测量,以监测所述至少一个辊和/或在所述至少一个辊隙中的振动 。 本摘要既不旨在限定本说明书中公开的发明,也不旨在以任何方式限制本发明的范围。