Method and apparatus for determing the thickness of a chromium depleted zone of a surface region of a steel member
    3.
    发明申请
    Method and apparatus for determing the thickness of a chromium depleted zone of a surface region of a steel member 失效
    用于确定钢构件的表面区域的贫铬区的厚度的方法和装置

    公开(公告)号:US20050200354A1

    公开(公告)日:2005-09-15

    申请号:US10521820

    申请日:2003-07-22

    CPC分类号: G01N33/20 G01B7/105 G01N27/80

    摘要: The invention provides a method and apparatus for monitoring subsurface chromium depletion from a steel member, such as a pyrolysis pipe. In the harsh conditions of a pyrolysis furnace, chromium within the pipe 16 migrates towards the pipe surface which results in the formation of a chromium depleted layer 14. This layer can provide useful data about the condition and operation of the furnace. The degree of chromium depletion is measured by using a magnetic source of known strength to create a magnetic field in the surface region of the pipe 16. An estimate of the thickness of the chromium depleted layer 14 is determined from the resultant magnetic flux, which can be measured by a hall element arranged at substantially 45° to the longitudinal axis of the magnet.

    摘要翻译: 本发明提供了一种用于监测来自诸如热解管之类的钢构件的地下铬消耗的方法和装置。 在热解炉的恶劣条件下,管道16内的铬向管道表面移动,导致铬贫化层14的形成。该层可以提供关于炉子的状况和操作的有用数据。 通过使用已知强度的磁源来测量铬消耗的程度,以在管16的表面区域产生磁场。根据所得到的磁通量来确定铬耗尽层14的厚度的估计, 由霍尔元件测量,霍尔元件以相对于磁体的纵向轴线大致45度的方式布置。

    Apparatus for inspecting deformation of pipes
    5.
    发明申请
    Apparatus for inspecting deformation of pipes 失效
    用于检查管道变形的装置

    公开(公告)号:US20050120812A1

    公开(公告)日:2005-06-09

    申请号:US10507493

    申请日:2002-03-13

    CPC分类号: G01B7/281 G01B5/08

    摘要: An apparatus is provided for measuring deformation of a surface of a pipe. The apparatus has a central portion to which a detector section is mounted. At each side, guides are connected to the housing via arms. The housing has a platform below which an inverted U-shaped section is provided, with the platform forming the base of the U. At the rear of this section a wheel is rotatably mounted on an axle. Forward of this, and also within the U-shaped section is mounted a further U-shaped section. This is pivotally mounted at its rear end by means of a pin such that its forward end is free to move vertically. The forward end has mounted within it a further wheel on an axle. Projecting upwards from the second U-shaped section is a rod which passes through a hole in platform. Around the lower portion of the rod is provided a spring which biases the detector downwards and away from the platform. The rod moves vertically with the wheel as it passes over bumps in the pipe. The rod is connected to a potentiometer which varies an output voltage. By correlating the variations in the output voltage with the distance moved by the detector, deformations in the pipe may be mapped.

    摘要翻译: 提供了用于测量管的表面的变形的装置。 该装置具有安装检测器部分的中心部分。 在每一侧,引导件通过臂连接到外壳。 壳体具有一个平台,在该平台的下方设置有倒U形的部分,平台形成U形的基部。在该部分的后部,轮可旋转地安装在轴上。 向前,并且在U形部分内还安装有另外的U形截面。 这通过销枢转地安装在其后端,使得其前端可以自由地垂直移动。 前端已经在轴上安装了另一个车轮。 从第二U形部向上突出的是穿过平台中的孔的杆。 在杆的下部周围设置有使检测器向下并远离平台偏置的弹簧。 当杆越过管道中的凸块时,杆随着车轮垂直移动。 杆连接到电位器,电位器改变输出电压。 通过将输出电压的变化与检测器移动的距离相关联,可以映射管道中的变形。

    Apparatus for inspecting deformation of pipes
    7.
    发明授权
    Apparatus for inspecting deformation of pipes 失效
    用于检查管道变形的装置

    公开(公告)号:US07159477B2

    公开(公告)日:2007-01-09

    申请号:US10507493

    申请日:2002-03-13

    IPC分类号: G01M19/00

    CPC分类号: G01B7/281 G01B5/08

    摘要: An apparatus is provided for measuring deformation of a surface of a pipe. The apparatus has a central portion to which a detector section is mounted. At each side, guides are connected to the housing via arms. The housing has a platform below which an inverted U-shaped section is provided, with the platform forming the base of the U. At the rear of this section a wheel is rotatably mounted on an axle. Forward of this, and also within the U-shaped section is mounted a further U-shaped section. This is pivotally mounted at its rear end by means of a pin such that its forward end is free to move vertically. The forward end has mounted within it a further wheel on an axle. Projecting upwards from the second U-shaped section is a rod which passes through a hole in platform. Around the lower portion of the rod is provided a spring which biases the detector downwards and away from the platform. The rod moves vertically with the wheel as it passes over bumps in the pipe. The rod is connected to a potentiometer which varies an output voltage. By correlating the variations in the output voltage with the distance moved by the detector, deformations in the pipe may be mapped.

    摘要翻译: 提供了用于测量管的表面的变形的装置。 该装置具有安装检测器部分的中心部分。 在每一侧,引导件通过臂连接到外壳。 壳体具有一个平台,在该平台的下方设置有倒U形的部分,平台形成U形的基部。在该部分的后部,轮可旋转地安装在轴上。 向前,并且在U形部分内还安装有另外的U形截面。 这通过销枢转地安装在其后端,使得其前端可以自由地垂直移动。 前端已经在轴上安装了另一个车轮。 从第二U形部向上突出的是穿过平台中的孔的杆。 在杆的下部周围设置有使检测器向下并远离平台偏置的弹簧。 当杆越过管道中的凸块时,杆随着车轮垂直移动。 杆连接到电位器,电位器改变输出电压。 通过将输出电压的变化与检测器移动的距离相关联,可以映射管道中的变形。