公开(公告)号：US20060179948A1

公开(公告)日：2006-08-17

申请号：US10559369

申请日：2004-05-28

申请人： Wolfgang Ens ,  Alf Puttmer

发明人： Wolfgang Ens ,  Alf Puttmer

IPC分类号： G01H11/08 ,  G01N29/14

CPC分类号： G01M3/24

摘要： An acoustic pick-up, particularly an ultrasonic pick-up for acoustically diagnosing machines, for example, for detecting leakage in valves or for diagnosing positions, comprising a piezoelectric measuring element and an electronic circuit that processes the measurement signal into a form that is suited for transmission to an evaluation device. In order that the acoustic pick-up can function without an external auxiliary power supply, means are provided by means of which auxiliary power required for operating the electronic circuit can be generated from the acoustic signal to be picked up.

公开(公告)号：US20050024215A1

公开(公告)日：2005-02-03

申请号：US10927480

申请日：2004-08-27

申请人： Keith Roy

发明人： Keith Roy

IPC分类号： G01M3/24 ,  G08B21/00

CPC分类号： G01M3/24 ,  G01M3/243

摘要： An apparatus for permanently or semi-permanently fitting to an underground water pipe 15,16 for detecting leaks therein, comprises a hydrophone 26 mounted to acoustically monitor water flowing along the pipe 15,16 and means 29 for analysing a parameter of the output signal of the hydrophone 26 and for generating an alarm signal, in the event that the parameter is above a maximum value or below a minimum value. The apparatus further comprises a radio transmitter for transmitting the alarm signal to a remote receiver, so as to indicate the detection of a leak. The maximum and minimum values are preferably calculated using historical data obtained from the hydrophone 26, so that the values are automatically adjusted to suit location of the apparatus. In use, a plurality of leak detection apparatus can be installed to pipes at various locations around a geographical area of supply. Once a leak has been identified in an area, it is then a relatively simple matter to more precisely determine where in the area should be surveyed using a conventional leak detector. Thus, the need to survey the whole of the area using a conventional leak detector is avoided.

摘要翻译： 用于永久地或半永久地配合到地下水管15,16以检测其中的泄漏的装置包括安装成用于声学地监测沿管道15,16流动的水的水听器26和用于分析输出信号的参数的装置29 该水听器26用于在该参数高于最大值或低于最小值的情况下产生报警信号。 该装置还包括用于将报警信号发送到远程接收器的无线电发射机，以指示检测到泄漏。 优选地，使用从水听器26获得的历史数据来计算最大值和最小值，使得自动调整这些值以适应装置的位置。 在使用中，可以在供应的地理区域周围的各个位置处将多个泄漏检测装置安装到管道中。 一旦在一个区域中已经发现泄漏，则使用常规的泄漏检测器来更精确地确定该区域应该在哪里进行测量是相对简单的事情。 因此，避免了使用常规泄漏检测器来调查整个区域的需要。

公开(公告)号：US20030033877A1

公开(公告)日：2003-02-20

申请号：US10197166

申请日：2002-07-17

申请人： PALMER ENVIRONMENTAL LIMITED

发明人： Keith John Roy

IPC分类号： G01N029/00

CPC分类号： G01M3/24 ,  G01M3/243

摘要： An apparatus for permanently or semi-permanently fitting to an underground water pipe 15,16 for detecting leaks therein, comprises a hydrophone 26 mounted to acoustically monitor water flowing along the pipe 15,16 and means 29 for analysing a parameter of the output signal of the hydrophone 26 and for generating an alarm signal, in the event that the parameter is above a maximum value or below a minimum value. The apparatus further comprises a radio transmitter for transmitting the alarm signal to a remote receiver, so as to indicate the detection of a leak. The maximum and minimum values are preferably calculated using historical data obtained from the hydrophone 26, so that the values are automatically adjusted to suit location of the apparatus. In use, a plurality of leak detection apparatus can be installed to pipes at various locations around a geographical area of supply. Once a leak has been identified in an area, it is then a relatively simple matter to more precisely determine where in the area should be surveyed using a conventional leak detector. Thus, the need to survey the whole of the area using a conventional leak detector is avoided.

摘要翻译： 用于永久地或半永久地配合到地下水管15,16以检测其中的泄漏的装置包括安装成用于声学地监测沿管道15,16流动的水的水听器26和用于分析输出信号的参数的装置29 该水听器26用于在该参数高于最大值或低于最小值的情况下产生报警信号。 该装置还包括用于将报警信号发送到远程接收器的无线电发射机，以指示检测到泄漏。 优选地，使用从水听器26获得的历史数据来计算最大值和最小值，使得自动调整这些值以适应装置的位置。 在使用中，可以在供应的地理区域周围的各个位置处将多个泄漏检测装置安装到管道中。 一旦在一个区域中已经发现泄漏，则使用常规的泄漏检测器来更精确地确定该区域应该在哪里进行测量是相对简单的事情。 因此，避免了使用常规泄漏检测器来调查整个区域的需要。

公开(公告)号：US20020112527A1

公开(公告)日：2002-08-22

申请号：US10069049

申请日：2002-02-21

发明人： David A Nadin

IPC分类号： G01M003/04

CPC分类号： G01M3/32 ,  B64F5/60 ,  G01M3/24

摘要： A method of locating a potential source of fuel leakage in an aircraft fuel tank including the steps of: sealing a vacuum tight cover over the whole seam on the surface of the empty fuel tank where there is a suspected source of fuel leak; removing the air between the cover and the surface; measuring the vacuum between cover and the surface; comparing the measured vacuum with a predetermined acceptable datum vacuum value. The technique of sealing a vacuum tight cover to a surface is known as nullbaggingnull.

摘要翻译： 一种在飞机燃料箱中定位潜在的燃料泄漏源的方法，包括以下步骤：在空燃料箱表面上的整个接缝处密封真空密封盖，其中存在可疑的燃料泄漏源; 去除盖子和表面之间的空气; 测量盖和表面之间的真空度; 将测量的真空与预定的可接受的基准真空值进行比较。 将真空密封盖密封到表面的技术被称为“装袋”。

公开(公告)号：US6079252A

公开(公告)日：2000-06-27

申请号：US82269

申请日：1998-05-20

申请人： Terry A. Tabler ,  Steven M. Lurcott

发明人： Terry A. Tabler ,  Steven M. Lurcott

IPC分类号： G01F23/296 ,  G01M3/24 ,  G01N29/02 ,  G01N29/036 ,  G01M3/00 ,  G01K7/00 ,  G01N3/10 ,  G01N27/00

CPC分类号： G01F23/2966 ,  G01M3/24 ,  G01N29/022 ,  G01N29/036 ,  G01N2291/014 ,  G01N2291/0215 ,  G01N2291/0256 ,  G01N2291/02836 ,  G01N2291/0423 ,  G01N2291/0426

摘要： A leak detection device securable in detection proximity to a fluid vessel. The leak detection device includes a sensor element and a monitoring assembly. The sensor element has a monitorable characteristic, and the monitorable characteristic changes upon contact, immerson or in exposure to the fluid contained in the vessel. The monotoring assembly is responsive to the monitorable characteristic and produces an changing electrical output in response to change in the monitorable characteristic. The vessel and leak detection device may form an assembly including a shroud or cover over the detection device and a leak-susceptible portion of the vessel, to provide a microenvironment in which the detection device is operated.

摘要翻译： 一种可靠地检测流体容器的泄漏检测装置。 泄漏检测装置包括传感器元件和监视组件。 传感器元件具有可监视的特性，并且可监视的特性在接触，浸入或暴露于容纳在容器中的流体时变化。 单调组件响应于可监视特性，响应于可监视特性的变化而产生变化的电输出。 容器和泄漏检测装置可以形成包括检测装置上的护罩或盖子以及容器的易泄漏部分的组件，以提供其中操作检测装置的微环境。

公开(公告)号：US6044692A

公开(公告)日：2000-04-04

申请号：US175742

申请日：1998-10-20

申请人： Michael Bowling

发明人： Michael Bowling

IPC分类号： G01M3/04 ,  F28D7/00 ,  G01M3/18 ,  G01M3/22 ,  G01M3/24

CPC分类号： G01M3/188 ,  G01M3/228 ,  G01M3/24

摘要： A vessel such as a dairy pasteuriser having a path B for product and a separate path A for coolant in intimate relationship is tested for leaks by circulating a donor fluid under pressure in path A whilst a recipient fluid such as clean tap water is circulated in path B. The donor fluid is a gas, and leakage is detected using an ultrasound probe.

摘要翻译： 具有用于产品的路径B和用于密封关系的冷却剂的单独路径A的容器如乳制品巴氏灭菌器通过在路径A中的压力下循环施主流体而测试泄漏，而诸如干净的自来水的接收流体在路径中循环 供体流体是气体，使用超声探头检测泄漏。

公开(公告)号：US5854422A

公开(公告)日：1998-12-29

申请号：US889979

申请日：1997-07-10

申请人： R. Clayton McKeon ,  Melvin F. Clouse

发明人： R. Clayton McKeon ,  Melvin F. Clouse

IPC分类号： G01H3/12 ,  G01M3/24 ,  G01M3/38 ,  G01M3/20 ,  G01N21/17

CPC分类号： G01H3/12 ,  G01M3/24 ,  G01M3/38

摘要： An ultrasonic detector of the present invention includes an ultrasonic transducer for detecting ultrasonic energy and generating an electrical signal having an amplitude corresponding to the detected level of the received ultrasonic energy, and a light source supported in proximity to the ultrasonic transducer for illuminating an area from which the ultrasonic transducer may detect ultrasonic energy. Preferably, the light source is a directional light source positioned such that an optical axis of a light beam emitted from the light source intersects a directional axis of the ultrasonic transducer at a predetermined distance from the ultrasonic transducer. The ultrasonic detector of the present invention also preferably includes an indicator light coupled to the ultrasonic transducer for receiving the electrical signal output from the transducer and for indicating the relative amplitude of ultrasonic energy received by the transducer.

摘要翻译： 本发明的超声波探伤仪包括一个用于检测超声波能量并产生具有对应于接收到的超声波能量的检测电平的振幅的电信号的超声波换能器，以及一个支持在超声波换能器附近的光源， 超声波换能器可以检测超声能量。 优选地，光源是定向的定向光源，使得从光源发射的光束的光轴与超声波换能器在预定距离处与超声波换能器的方向轴相交。 本发明的超声波检测器还优选地包括耦合到超声波换能器的指示器光，用于接收从换能器输出的电信号并指示由换能器接收的超声能量的相对幅度。

公开(公告)号：US5767393A

公开(公告)日：1998-06-16

申请号：US813422

申请日：1997-03-10

申请人： Michael O. Robertson

发明人： Michael O. Robertson

IPC分类号： G01M3/24 ,  G01M3/04

CPC分类号： G01M3/24

摘要： An apparatus for detecting a leak in the storage tank which includes a transducer for detecting and converting a mechanical wave into an electrical signal, a support tube having an upper end extending outside of the tank and a lower end extending inside the tank into the fluid medium. The transducer is affixed to the lower end of the support tube. A signal processing unit for processing the electrical signal, and electrical cable for transmitting the electrical signal from the transducer to the signal processing unit is also present. A method of using the apparatus is also provided.

摘要翻译： 一种用于检测储罐中的泄漏的装置，包括用于检测和将机械波转换成电信号的换能器，具有延伸到罐外部的上端的支撑管和在罐内延伸到流体介质中的下端 。 传感器固定在支撑管的下端。 还存在用于处理电信号的信号处理单元和用于将电信号从换能器传送到信号处理单元的电缆。 还提供了使用该装置的方法。

公开(公告)号：US5675074A

公开(公告)日：1997-10-07

申请号：US586490

申请日：1996-01-16

申请人： Robert G. Melvin, II

发明人： Robert G. Melvin, II

IPC分类号： G01M3/24 ,  G01M3/00

CPC分类号： G01M3/24

摘要： A method of analyzing internal pressure of a closed container includes inducing vibration in a surface of a closed container; detecting sound resulting from the vibration; deriving information representing the detected sound; and determining whether the information corresponds to a predetermined spectral frequency condition and a predetermined spectral amplitude condition. The surface is at least partially conductive and inducing includes imposing a magnetic field on the surface. The predetermined spectral frequency condition and the predetermined spectral amplitude condition correspond to ranges of acceptable values. The detected sound is used to determine whether the closed container contains a pressure level within a predetermined range of pressure levels.

摘要翻译： 分析密闭容器的内部压力的方法包括在密闭容器的表面引起振动; 检测振动产生的声音; 导出表示检测到的声音的信息; 以及确定所述信息是否对应于预定的频谱条件和预定的频谱幅度条件。 该表面至少部分导电并且诱导包括在表面上施加磁场。 预定的频谱条件和预定的频谱幅度条件对应于可接受值的范围。 检测到的声音用于确定密闭容器是否包含在预定压力水平范围内的压力水平。

公开(公告)号：US5568449A

公开(公告)日：1996-10-22

申请号：US307292

申请日：1994-09-02

申请人： Steven P. Rountree ,  Samir W. Berjaoui

发明人： Steven P. Rountree ,  Samir W. Berjaoui

IPC分类号： G01F23/296 ,  G01F25/00 ,  G01M3/24 ,  G01S7/52 ,  G01S7/521 ,  G01S7/527 ,  G01S15/88 ,  G01S15/42

CPC分类号： G01S7/527 ,  G01F23/2962 ,  G01F23/2968 ,  G01F25/0061 ,  G01M3/24 ,  G01S7/52004 ,  G01S7/521 ,  G01S15/88 ,  G01S2007/52014 ,  Y10S367/902 ,  Y10S367/908

摘要： An ultrasonic probe utilized in an ultrasonic ranging system for determining fluid volume and/or fluid leakage in an underground storage tank, as well as monitoring fluid inventory, is provided which is characterized by (i) having its calibration reflectors positioned whereby each of the secondary echo packets formed by the calibration reflectors of the ultrasonic probe becomes imbedded into the trailing edge of a primary echo packet of another calibration reflector or to cause its secondary echo packet to be detected by the transducer after the transducer has detected a primary echo packet associated with the fluid surface, (ii) each of the calibration reflectors being positioned perpendicular to and offset from the longitudinal axis of the probe body, (iii) an ultrasonic sound wave dampening member fixedly positioned in the probe body between the transducer assembly and the tank bottom, the wave dampening member having a surface facing toward the transducer assembly wherein the surface is configured to dampen sound waves striking the surface before the sound waves are reflected from the surface, or (iv) the transducer assembly comprising a transducer body in which is housed a piezoelectric crystal oriented perpendicular to the longitudinal axis of the prove body, wherein the transducer body is structured to dampen selected ultrasonic sound waves which emanate from the crystal.

摘要翻译： 提供了用于超声波测距系统中用于确定地下储罐中的流体体积和/或流体泄漏以及监测流体存储的超声波探头，其特征在于：（i）具有其校准反射器，其中每个次级 由超声波探头的校准反射器形成的回波包被嵌入到另一个校准反射器的主回波包的后缘中，或者在换能器检测到与第二回波包相关联的主回波包之后由换能器检测其次级回波包 所述流体表面，（ii）每个所述校准反射器定位成垂直于所述探针主体的纵向轴线并且偏离所述探针主体的纵向轴线;（iii）超声波波浪阻尼构件，其固定地定位在所述探针主体中的所述换能器组件和所述罐底部之间 ，所述波浪阻尼构件具有面向所述换能器组件的表面，其中所述surfa ce被配置为在声波从表面反射之前抑制撞击表面的声波，或者（iv）换能器组件包括其中容纳有垂直于证明体的纵向轴线定向的压电晶体的换能器体，其中 换能器体被构造成阻尼从晶体发出的选定的超声波。