Hot flaw detector with annular injection port for injecting cooling
liquid
    1.
    发明授权
    Hot flaw detector with annular injection port for injecting cooling liquid 失效
    具有注射冷却液体的注射口的热流检测器

    公开(公告)号:US5107214A

    公开(公告)日:1992-04-21

    申请号:US602242

    申请日:1990-11-07

    摘要: A hot flaw detector is equipped with a sensor holding member that has a circular opening through which the material to be inspected will pass and that holds a flaw detecting sensor. Provision is made of an annular cooling liquid injection port that is open at an end of the sensor holding member adjacent to the inner peripheral wall of the circular opening, and provision is further made of an annular cooling liquid introduction port that is open at the other end of the sensor holding member adjacent to the inner peripheral wall of the circular opening. The cooling liquid is injected from the annular cooling liquid injection port, and forms a liquid film along the inner peripheral wall of the circular opening, and is recovered through the annular cooling liquid introduction port. The inner peripheral wall of the sensor holding member is effectively cooled by the liquid film which drips little onto the material to be inspected.

    摘要翻译: PCT No.PCT / JP90 / 00296 Sec。 371日期1990年11月7日 102(e)1990年11月7日PCT PCT 1990年3月7日PCT公布。 出版物WO90 / 10864 1990年9月20日。热瑕疵检测器配有传感器保持构件,传感器保持构件具有圆形开口,待检查材料将通过该开口,并保持探伤传感器。 设置有环形冷却液注入口,该环形冷却液注入口在传感器保持构件的与圆形开口的内周壁相邻的端部处开口,并且还设置在另一个开口的环形冷却液引入口 传感器保持构件的端部与圆形开口的内周壁相邻。 冷却液从环状冷却液注入口喷出,沿着圆形开口的内周壁形成液膜,通过环状冷却液导入口回收。 传感器保持构件的内周壁由液膜有效地冷却,液膜几乎滴落到被检查材料上。

    Method and system for checking errors of signal being transferred
through transmission line
    2.
    发明授权
    Method and system for checking errors of signal being transferred through transmission line 失效
    检查通过传输线传输的信号错误的方法和系统

    公开(公告)号:US4939732A

    公开(公告)日:1990-07-03

    申请号:US251212

    申请日:1988-07-14

    摘要: Errors occurring in information signals (each including control signals), dummy codes and attribute flags for the information signals and the dummy codes, transferred from a transmitting circuit to a receiving circuit through an interface line, with frames arranged in a serial transfer form are detected by using a cyclic redundancy check (CRC). The dummy codes and attribute flags for the dummy codes are not used in this checking. The re-transmission of signals in the frame resulting from a CRC error generated by the attribute flag for the dummy code changing to that of a control signal in the frame is avoided by: (1) providing, at the transmitting circuit, flags for determining the existence and the number of the control signal in the frame in front of the succeeding frame, and (2) comparing signals, relating to the flags, detected in the receiving circuit with the flags.

    摘要翻译: PCT No.PCT / JP88 / 00508 Sec。 371日期:1988年7月14日 102(e)日期1988年7月14日PCT提交1988年5月26日PCT公布。 第WO88 / 09590号公报 日期为1988年12月1日。信息信号(每个包括控制信号)中的错误,用于信息信号的虚拟代码和属性标志以及通过接口线从发送电路传送到接收电路的虚拟代码, 通过使用循环冗余校验(CRC)来检测串行传输形式。 虚拟代码的虚拟代码和属性标志不用于此检查。 通过以下方式避免由帧中的控制信号改变为虚拟码的属性标志产生的由CRC错误产生的帧中的信号的重新传输:(1)在发射电路处提供用于确定的标志 在后续帧前面的帧中的控制信号的存在和数量,以及(2)将在接收电路中检测到的与标志相关的信号与标志进行比较。

    Method and apparatus for non-destructively detecting defects in metal
materials by using rotating magnetic fields generated by multiphase ac
current
    3.
    发明授权
    Method and apparatus for non-destructively detecting defects in metal materials by using rotating magnetic fields generated by multiphase ac current 失效
    通过使用由多相交流电流产生的旋转磁场,非破坏性地检测金属材料缺陷的方法和装置

    公开(公告)号:US4818935A

    公开(公告)日:1989-04-04

    申请号:US26793

    申请日:1987-02-05

    IPC分类号: G01N27/83 G01N27/90 G01R33/12

    CPC分类号: G01N27/9013

    摘要: Method and apparatus for non-destructive inspection of flaws in metal materials include exciting coils centered on a longitudinal axis of a cylindrical or columnar metallic material to be examined being arranged to surround the examinee material. A multiphase alternating current of such a relatively low frequency as to cause the exciting coils to generate a rotating magnetic field which rotates about the longitudinal axis of the examinee material is superimposed with a high frequency alternating current having an inspection frequency selected on the basis of the necessary sensitivity for detection of surface flaws of the examinee material. The composite multiphase current is applied to the exciting coils so that an electromagnetic effect induced in the surface of the examinee material by the high frequency alternating current is rotated for shifting circumferentially about the examinee material along with the rotating magnetic field. A detecting element group disposed in the proximity of the surface of the examined material detects the changing of the electromagnetic effect, dependent on the presence or absence of a surface flaw of the examinee material.

    摘要翻译: PCT No.PCT / JP86 / 00340 Sec。 371日期1987年2月5日 102(e)日期1987年2月5日PCT提交1986年7月2日PCT公布。 公开号WO87 / 00287 1987年1月15日的日期。用于金属材料中的缺陷的非破坏性检查的方法和装置包括以被检查的圆柱形或柱状金属材料的纵向轴线为中心的励磁线圈,被布置成围绕受检材料。 这种相对低频率的多相交流电流使得激励线圈产生围绕受检材料的纵向轴线旋转的旋转磁场,其叠加有具有基于所述受检材料的纵向轴线选择的检查频率的高频交流电 检测被检物质表面缺陷的必要灵敏度。 将复合多相电流施加到励磁线圈,使得通过高频交流电流在受检材料的表面中感应的电磁效应被旋转,以便随着旋转磁场围绕受检材料周向移动。 设置在被检查材料的表面附近的检测元件组根据受检材料的表面缺陷的存在或不存在来检测电磁效应的变化。