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    • 73. 发明授权
    • Detection of leaks in pipelines
    • 检测管道中的泄漏
    • US5416724A
    • 1995-05-16
    • US959143
    • 1992-10-09
    • Michael Savic
    • Michael Savic
    • F17D5/06G01M3/00G01M3/24G06G7/57
    • F17D5/06G01M3/007G01M3/24G01M3/243
    • An apparatus and process for determining the existence and location of a leak in an underground pipe, comprises a plurality of remote acoustic transmission sensor units distributed along the pipe and each containing equipment for analyzing acoustic signals from the pipe. The equipment includes a mechanism for identifying acoustic features of the acoustic signals which distinguish the acoustic signals of a leak from ambient acoustic signals. A control unit is connected to each of the remote units and includes additional equipment for further analyzing the signals to determine the proximity of the signal to a particular remote unit and, using the amplitude of the signal and the transmission characteristics of the pipe, determining the location of the leak.
    • 用于确定地下管道中的泄漏的存在和位置的装置和过程包括沿管道分布的多个远程声学传播传感器单元和每个包含用于分析来自管道的声学信号的设备。 该设备包括用于识别声信号的声学特征的机构,其将泄漏的声学信号与环境声学信号区分开。 控制单元连接到每个远程单元,并且包括用于进一步分析信号以确定信号到特定远程单元的接近度的附加设备,并且使用信号的幅度和管道的传输特性来确定 泄漏的位置。
    • 75. 发明授权
    • Liquid leakage detection apparatus including wheatstone bridge
    • 漏液检测仪包括惠斯通电桥
    • US4972179A
    • 1990-11-20
    • US385187
    • 1989-07-26
    • Juji Akiba
    • Juji Akiba
    • G01N27/06F17D5/06G01M3/16
    • F17D5/06G01M3/165
    • Liquid leakage detection apparatus is provided comprising: (a) a long detecting component wherein there are the following components bundled together: (i) a first conductor having a leading end and a trailing end, the first conductor covered by insulation, (ii) a second bare conductor having a leading end and a trailing end, the second conductor positioned parallel to the first conductor, the trailing end of the second conductor being connected with the trailing end of the first conductor, and (iii) a third conductor covered by a porous insulation and positioned parallel to the second conductor, (b) the leading end of the first conductor and the leading end of the second conductor being connected by the detecting means which detects and indicates a potential difference between the first and second conductors; (c) the leading ends of the first and second conductors also being connected, respectively, to one of the electrodes of a power supply, each through respective, known resistances; and (d) the third conductor being connected to the other electrode of the power supply such that a Wheatstone Bridge circuit is formed when the second conductor and third conductor are short circuited by a leaking liquid.
    • 提供了一种液体泄漏检测装置,包括:(a)长检测部件,其中存在以下部件捆绑在一起:(i)具有前端和后端的第一导体,所述第一导体被绝缘覆盖,(ii) 具有前端和后端的第二裸导体,所述第二导体平行于所述第一导体定位,所述第二导体的后端与所述第一导体的后端连接,以及(iii)被第一导体覆盖的第三导体 多孔绝缘并且平行于第二导体定位,(b)第一导体的前端和第二导体的前端通过检测并指示第一和第二导体之间的电位差的检测装置连接; (c)第一和第二导体的前端分别通过相应已知的电阻分别连接到电源的一个电极; 和(d)第三导体连接到电源的另一个电极,使得当第二导体和第三导体被泄漏的液体短路时形成惠斯通电桥电路。