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1. 发明申请

US20080078247A1 NON-DESTRUCTIVE TESTING OF PIPES 有权
标题翻译：管道非破坏性试验
公开(公告)号：US20080078247A1
公开(公告)日：2008-04-03
申请号：US11952582
申请日：2007-12-07
申请人： Osama Hunaidi , Marc Bracken , Alex Wang
发明人： Osama Hunaidi , Marc Bracken , Alex Wang
IPC分类号： G01H5/00
CPC分类号： G01N29/07 , G01B17/02 , G01M3/243 , G01N29/222 , G01N29/4418 , G01N2291/011 , G01N2291/02827 , G01N2291/02854 , G01N2291/2634
摘要： To perform a non-destructive condition assessment of a pipe carrying a fluid, an actual value representative of the propagation velocity of an acoustic disturbance propagating between two longitudinally separated points on the pipe is determined. A corresponding predicted value for the propagation velocity is computed as a function of at least one wall thickness parameter of the pipe by using a theoretical model for the propagation of acoustic waves in the pipe that assumes said pipe has a finite wall thickness with a predetermined circumferential thickness profile. The wall thickness parameter is then computed by matching the actual value with the predicted value, for example, by substituting the actual value in a formula predicting the theoretical value.
摘要翻译：为了对携带流体的管进行非破坏性条件评估，确定表示在管道上的两个纵向分离的点之间传播的声学干扰的传播速度的实际值。通过使用管道中声波传播的理论模型计算传播速度的相应预测值作为管道的至少一个壁厚参数的函数，假设所述管道具有预定圆周的有限壁厚厚度剖面。然后通过将实际值与预测值相匹配来计算壁厚参数，例如，通过在预测理论值的公式中替换实际值。

2. 发明授权

US07328618B2 Non-destructive testing of pipes 有权
标题翻译：管道无损检测
公开(公告)号：US07328618B2
公开(公告)日：2008-02-12
申请号：US11156573
申请日：2005-06-21
申请人： Osama Hunaidi , Marc Bracken , Alex Wang
发明人： Osama Hunaidi , Marc Bracken , Alex Wang
IPC分类号： G01H5/00
CPC分类号： G01N29/07 , G01B17/02 , G01M3/243 , G01N29/222 , G01N29/4418 , G01N2291/011 , G01N2291/02827 , G01N2291/02854 , G01N2291/2634
摘要： To perform a non-destructive condition assessment of a pipe carrying a fluid, an actual value representative of the propagation velocity of an acoustic disturbance propagating between two longitudinally separated points on the pipe is determined. A corresponding predicted value for the propagation velocity is computed as a function of at least one wall thickness parameter of the pipe by using a theoretical model for the propagation of acoustic waves in the pipe that assumes said pipe has a finite wall thickness with a predetermined circumferential thickness profile. The wall thickness parameter is then computed by matching the actual value with the predicted value, for example, by substituting the actual value in a formula predicting the theoretical value.
摘要翻译：为了对携带流体的管进行非破坏性条件评估，确定表示在管道上的两个纵向分离的点之间传播的声学干扰的传播速度的实际值。通过使用管道中声波传播的理论模型计算传播速度的相应预测值作为管道的至少一个壁厚参数的函数，假设所述管道具有预定圆周的有限壁厚厚度剖面。然后通过将实际值与预测值相匹配来计算壁厚参数，例如，通过在预测理论值的公式中替换实际值。

3. 发明授权

US07810378B2 Monitoring of leakage in wastewater force mains and other pipes carrying fluid under pressure 有权
标题翻译：监测废水压力管道和其他承受流体压力的管道的泄漏
公开(公告)号：US07810378B2
公开(公告)日：2010-10-12
申请号：US11766288
申请日：2007-06-21
申请人： Osama Hunaidi , Alex Wang
发明人： Osama Hunaidi , Alex Wang
IPC分类号： G01M3/24
CPC分类号： G01M3/243
摘要： A method of detecting leakage in a force main involves placing at least two spaced sensors on the force main. Liquid is pumped through the pipe by means of a pump. The pump is shut down for an interval of time, and during the period following pump shutdown while negative pressure is present in the pipe, signals are generated at the sensors due to noise or vibration resulting from fluid being drawn into the pipe. The position of a leak in the pipe is determined by correlating the leak noise signals generated while the pipe is under negative pressure. Alternatively, the invention can be applied to a pressurized pipe, in which case conditions of negative pressure can be deliberatively created for a period to draw in fluid from the outside.
摘要翻译：检测力主体中泄漏的方法涉及在力主体上放置至少两个间隔开的传感器。液体通过泵泵送通过管道。泵关闭一段时间，在泵关闭期间，管道中存在负压时，由于流体被吸入管道的噪音或振动，传感器产生信号。通过将管道处于负压下产生的泄漏噪声信号相关联来确定管道中的泄漏位置。或者，本发明可以应用于加压管，在这种情况下，可以有意识地产生负压条件一段时间以从外部吸入流体。

4. 发明授权

US07475596B2 Non-destructive testing of pipes 有权
标题翻译：管道无损检测
公开(公告)号：US07475596B2
公开(公告)日：2009-01-13
申请号：US11952582
申请日：2007-12-07
申请人： Osama Hunaidi , Marc Bracken , Alex Wang
发明人： Osama Hunaidi , Marc Bracken , Alex Wang
IPC分类号： G01N29/00
CPC分类号： G01N29/07 , G01B17/02 , G01M3/243 , G01N29/222 , G01N29/4418 , G01N2291/011 , G01N2291/02827 , G01N2291/02854 , G01N2291/2634
摘要： To perform a non-destructive condition assessment of a pipe carrying a fluid, an actual value representative of the propagation velocity of an acoustic disturbance propagating between two longitudinally separated points on the pipe is determined. A corresponding predicted value for the propagation velocity is computed as a function of at least one wall thickness parameter of the pipe by using a theoretical model for the propagation of acoustic waves in the pipe that assumes said pipe has a finite wall thickness with a predetermined circumferential thickness profile. The wall thickness parameter is then computed by matching the actual value with the predicted value, for example, by substituting the actual value in a formula predicting the theoretical value.
摘要翻译：为了对携带流体的管进行非破坏性条件评估，确定表示在管道上的两个纵向分离的点之间传播的声学干扰的传播速度的实际值。通过使用管道中声波传播的理论模型计算传播速度的相应预测值作为管道的至少一个壁厚参数的函数，假设所述管道具有预定圆周的有限壁厚厚度剖面。然后通过将实际值与预测值相匹配来计算壁厚参数，例如，通过在预测理论值的公式中替换实际值。

5. 发明申请

US20080314122A1 MONITORING OF LEAKAGE IN WASTEWATER FORCE MAINS AND OTHER PIPES CARRYING FLUID UNDER PRESSURE 有权
标题翻译：监测废水中主要的压力和其他承受流体压力的管道的泄漏
公开(公告)号：US20080314122A1
公开(公告)日：2008-12-25
申请号：US11766288
申请日：2007-06-21
申请人： Osama Hunaidi , Alex Wang
发明人： Osama Hunaidi , Alex Wang
IPC分类号： G01M3/24
CPC分类号： G01M3/243
摘要： A method of detecting leakage in a force main involves placing at least two spaced sensors on the force main. Liquid is pumped through the pipe by means of a pump. The pump is shut down for an interval of time, and during the period following pump shutdown while negative pressure is present in the pipe, signals are generated at the sensors due to noise or vibration resulting from fluid being drawn into the pipe. The position of a leak in the pipe is determined by correlating the leak noise signals generated while the pipe is under negative pressure. Alternatively, the invention can be applied to a pressurized pipe, in which case conditions of negative pressure can be deliberatively created for a period to draw in fluid from the outside.
摘要翻译：检测力主体中泄漏的方法涉及在力主体上放置至少两个间隔开的传感器。液体通过泵泵送通过管道。泵关闭一段时间，在泵关闭期间，管道中存在负压时，由于流体被吸入管道的噪音或振动，传感器产生信号。通过将管道处于负压下产生的泄漏噪声信号相关联来确定管道中的泄漏位置。或者，本发明可以应用于加压管，在这种情况下，可以有意识地产生负压条件一段时间以从外部吸入流体。

6. 发明申请

US20060283251A1 Non-destructive testing of pipes 有权
公开(公告)号：US20060283251A1
公开(公告)日：2006-12-21
申请号：US11156573
申请日：2005-06-21
申请人： Osama Hunaidi , Marc Bracken , Alex Wang
发明人： Osama Hunaidi , Marc Bracken , Alex Wang
IPC分类号： G01H5/00
CPC分类号： G01N29/07 , G01B17/02 , G01M3/243 , G01N29/222 , G01N29/4418 , G01N2291/011 , G01N2291/02827 , G01N2291/02854 , G01N2291/2634
摘要： To perform a non-destructive condition assessment of a pipe carrying a fluid, an actual value representative of the propagation velocity of an acoustic disturbance propagating between two longitudinally separated points on the pipe is determined. A corresponding predicted value for the propagation velocity is computed as a function of at least one wall thickness parameter of the pipe by using a theoretical model for the propagation of acoustic waves in the pipe that assumes said pipe has a finite wall thickness with a predetermined circumferential thickness profile. The wall thickness parameter is then computed by matching the actual value with the predicted value, for example, by substituting the actual value in a formula predicting the theoretical value.

7. 发明授权

US06561032B1 Non-destructive measurement of pipe wall thickness 有权
标题翻译：管壁厚无损测量
公开(公告)号：US06561032B1
公开(公告)日：2003-05-13
申请号：US09570922
申请日：2000-05-15
申请人： Osama Hunaidi
发明人： Osama Hunaidi
IPC分类号： G01N2918
CPC分类号： G01B17/02 , G01N29/07 , G01N2291/02854 , G01N2291/2626 , G01N2291/2634
摘要： The average wall thickness of a pipe carrying a fluid is determined by sensing disturbances in the pipe at two spaced locations, determining the propagation velocity of coupled propagation mode signals at low frequencies resulting from the disturbances, and calculating the average pipe wall thickness between the two locations from the propagation velocity and known constants for the pipe and fluid.
摘要翻译：承载流体的管道的平均壁厚通过在两个间隔的位置处感测管道中的扰动来确定，确定由干扰引起的低频处的耦合传播模式信号的传播速度，并且计算两者之间的平均管壁厚度来自传播速度和管道和流体的已知常数的位置。

8. 发明授权

US06453247B1 PC multimedia-based leak detection system for water transmission and distribution pipes 有权
标题翻译：基于PC多媒体的输水管道泄漏检测系统
公开(公告)号：US06453247B1
公开(公告)日：2002-09-17
申请号：US09482317
申请日：2000-01-14
申请人： Osama Hunaidi
发明人： Osama Hunaidi
IPC分类号： G01M300
CPC分类号： G01M3/243
摘要： This invention pertains to the detection of leaks in plastic water distribution pipes by processing the sound or vibration induced in the pipe by water escaping under pressure. Acoustic leak signals are measured at two (or more) contact points with the pipe, e.g., fire hydrants or valves, using vibration sensors or hydrophones. The signals are digitally recorded using the computer's soundcard. The leak is located using the difference in arrival times of two leak signals as determined from the cross-correlation function traditionally used in leak detection applications or an enhanced impulse response function. The enhanced impulse response function eliminates the need to filter leak signals before processing and hence avoids the uncertainty involved in selecting filter cutoff frequencies for non-experts. Listening to leak sound in plastic pipes is made possible in software by shifting their low-frequency content to an audible higher range. The software implementation of this system can be readily integrated with commercially available RF-based data transmitters and leak sensors—thus providing a complete, flexible, and inexpensive leak detection system.
摘要翻译：本发明涉及通过在压力下通过逸出的水处理在管道中引起的声音或振动来检测塑料配水管中的泄漏。使用振动传感器或水听器在两个（或多个）接触点处测量声学泄漏信号，例如消防栓或阀门。使用计算机的声卡对信号进行数字记录。使用从泄漏检测应用中传统使用的互相关函数或增强的脉冲响应函数确定的两个泄漏信号的到达时间的差异来定位泄漏。增强的脉冲响应功能消除了在处理之前过滤泄漏信号的需要，因此避免了为非专家选择滤波器截止频率所涉及的不确定性。通过将低频内容转换到较高音频范围，可以在软件中聆听塑料管道中的泄漏声音。该系统的软件实现可以容易地与市售的基于RF的数据发射器和泄漏传感器集成，从而提供完整，灵活和便宜的泄漏检测系统。

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