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公开(公告)号：US20200370993A1
公开(公告)日：2020-11-26
申请号：US16878247
申请日：2020-05-19
申请人： Ping-Tsun WU
发明人： Ping-Tsun WU
摘要： A leak detection device for detecting leakage of a chamber includes a leak detection assembly, a first isolation valve, a suction pump and a second isolation valve. The leak detection assembly includes a gas sensor for detecting a first specified gas in the chamber. The first isolation valve is coupled between the chamber and the leak detection assembly to selectively permit and prevent fluid communication between the chamber and the leak detection assembly. The suction pump draws out air in the chamber to allow a pressure inside the chamber to be lower than a pressure outside the chamber. The second isolation valve is coupled between the chamber and the suction pump to selectively permit and prevent fluid communication between the chamber and the suction pump.
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公开(公告)号：US20170315016A1
公开(公告)日：2017-11-02
申请号：US15650224
申请日：2017-07-14
申请人： The Boeing Company
发明人： Scott Alan Ludwig , Derek Mickelson
IPC分类号： G01M3/34
CPC分类号： G01M3/34
摘要： An apparatus (100) for testing suction cups (138) mounted on a track (162) is disclosed. The apparatus (100) comprises a base (102) comprising a first surface (104) and a second surface (106) opposite the first surface (104). The apparatus further comprises ports (108) penetrating the base (102) from the first surface (104) to the second surface (106) and vacuum sensors (112) pneumatically coupled to the ports (108). The ports (108) in the base (102) are arranged in a geometric pattern (110).
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公开(公告)号：US09310272B2
公开(公告)日：2016-04-12
申请号：US14173981
申请日：2014-02-06
摘要： The electronic device (1) is provided with an automatic leak detection means, notably for a gas leak, in the case (2) of the device. The automatic leak detection means includes an internal pressure sensor (3), an external pressure sensor (4) and a calculation unit (5) connected to the internal pressure sensor and to the external pressure sensor. The calculation unit, which is a microcontroller, and the internal pressure sensor are arranged inside the case, whereas the external pressure sensor is arranged on an external surface of the case. The microcontroller (5) checks, based on measurements performed by the pressure sensors over time, whether the pressure variation inside the case is different from the pressure variation outside the case to determine whether or not the case has a sufficient degree of sealing.
摘要翻译： 电子设备（1）在设备的情况（2）中设置有特别用于气体泄漏的自动泄漏检测装置。 自动泄漏检测装置包括内部压力传感器（3），外部压力传感器（4）和连接到内部压力传感器和外部压力传感器的计算单元（5）。 作为微控制器的计算单元和内部压力传感器布置在壳体内部，而外部压力传感器布置在壳体的外表面上。 微控制器（5）基于压力传感器随时间推移的测量，检查壳体内的压力变化是否不同于壳体外的压力变化，以确定壳体是否具有足够的密封度。
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公开(公告)号：US09121787B2
公开(公告)日：2015-09-01
申请号：US13926630
申请日：2013-06-25
摘要： A vacuum system diagnostic is disclosed. In one example, vacuum system leaks are diagnosed via a pressure reading of a vacuum reservoir. The approach may reduce the number of sensors used to diagnose vacuum system degradation.
摘要翻译： 公开了真空系统诊断。 在一个示例中，通过真空容器的压力读数诊断真空系统泄漏。 该方法可以减少用于诊断真空系统退化的传感器的数量。
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公开(公告)号：US08713994B2
公开(公告)日：2014-05-06
申请号：US13161041
申请日：2011-06-15
申请人： Katsuhiko Makino
发明人： Katsuhiko Makino
CPC分类号： F02M25/0836
摘要： A method for detecting leak from a fuel vapor treating apparatus defining a first area including a fuel tank and a second area including an adsorbent canister has hermetically closing the first area, measuring internal pressure of the first area, comparing an absolute value of differential pressure between the internal pressure of the first area and the atmospheric pressure with a predetermined value, measuring the internal pressure of the first area in a case that the absolute value is equal to or higher than the predetermined value in order to check for leaks from the first area based on changes in the internal pressure of the first area, fluidly communicating the first area with the second area in order to equilibrate internal pressures of the first area and the second area, hermetically closing the second area, and measuring the internal pressure of the second area in order to check for leaks from the second area based on changes in the internal pressure of the second area.
摘要翻译： 一种用于检测来自限定包括燃料箱的第一区域和包括吸附剂罐的第一区域的燃料蒸气处理设备的泄漏的方法，其密封地封闭所述第一区域，测量所述第一区域的内部压力， 第一区域的内部压力和大气压力具有预定值，在绝对值等于或高于预定值的情况下测量第一区域的内部压力，以便检查第一区域的泄漏 基于第一区域的内部压力的变化，使第一区域与第二区域流体连通，以便平衡第一区域和第二区域的内部压力，气密地关闭第二区域，并且测量第二区域的内部压力 区域，以便基于第二区域的内部压力的变化来检查来自第二区域的泄漏。
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公开(公告)号：US08707766B2
公开(公告)日：2014-04-29
申请号：US12764202
申请日：2010-04-21
申请人： John N. Harris , Finley Miller , Michael R. Swift
发明人： John N. Harris , Finley Miller , Michael R. Swift
CPC分类号： G01N21/78 , G01M3/04 , G01M3/042 , G01N21/783 , G01N31/225
摘要： A device indicates the location of an air leak in a vacuum bag used to process composite parts. The device includes a layer of material on the inner face of the bag that changes in appearance due to an oxidation-reduction reaction in areas of the layer exposed to oxygen caused by a leak in the bag.
摘要翻译： 设备表示用于处理复合材料部件的真空袋中的空气泄漏的位置。 该装置包括在袋的内表面上的一层材料，其由于在袋中泄漏而暴露于氧的层的区域中由于氧化还原反应而在外观上变化。
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公开(公告)号：US08578760B2
公开(公告)日：2013-11-12
申请号：US12874131
申请日：2010-09-01
申请人： Steve Calhoun , David Kriebel , Andrew Barmeyer
发明人： Steve Calhoun , David Kriebel , Andrew Barmeyer
IPC分类号： G01M3/34
CPC分类号： G01M3/32
摘要： Container inspection utilizing a linear actuator. A linear actuator shaft is movable such that the shaft end temporarily contacts the container. A feedback parameter resulting from or related to a change of an electrical property of the linear actuator, is detected or determined by a controller, which determines whether the container satisfies pre-determined inspection criteria, e.g., whether the container is properly sealed, satisfies pressure criteria and/or has unacceptable vacuum. These determinations are made based at least in part upon one or more detected feedback parameters including or related to at least one of a change of position of the shaft, a change of velocity of the shaft and a force or torque exerted by the container to the shaft. In this manner, high speed leak detection is performed without a load cell or force transducer, without squeezing or compressing bottles and without determining fill level changes.
摘要翻译： 集装箱检查利用线性执行机构。 线性致动器轴可移动，使得轴端临时接触容器。 由线性致动器的电气特性的变化引起的或与线性致动器的电气特性的变化相关的反馈参数由控制器检测或确定，控制器确定容器是否满足预定的检查标准，例如容器是否被适当地密封，满足压力 标准和/或具有不可接受的真空。 至少部分地基于一个或多个检测到的反馈参数进行这些确定，所述反馈参数包括或关于轴的位置变化，轴的速度变化以及由容器施加的力或扭矩中的至少一个 轴。 以这种方式，在没有压力传感器或力传感器的情况下执行高速泄漏检测，而不挤压或压缩瓶子，而不确定填充液位变化。
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公开(公告)号：US08397552B2
公开(公告)日：2013-03-19
申请号：US12895907
申请日：2010-10-01
CPC分类号： G01M3/34 , B60K15/03519 , B60K2015/0319 , B60K2015/03514 , G01M3/025
摘要： A vehicle includes a sealed fuel system and a controller. The fuel system includes a fuel tank, a fuel cap, a control orifice, and an absolute pressure sensor. The controller associates a threshold large leak in the fuel system with a fuel cap sealing error. The controller detects completion of a prior refueling event, compares measurements from the pressure sensor to a reference vacuum across the control orifice to determine the presence of the threshold large leak, and sets a diagnostic code corresponding to the large leak only upon completion of the prior refueling event. A method for detecting the large leak includes detecting completion of the refueling event, comparing vacuum measurements from the absolute pressure sensor to a reference vacuum across the orifice to determine the presence of the large leak, and setting a diagnostic code corresponding to the large leak only upon completion of the prior refueling event.
摘要翻译： 车辆包括密封燃料系统和控制器。 燃料系统包括燃料箱，燃料盖，控制孔和绝对压力传感器。 控制器将燃料系统中的阈值大泄漏与燃料盖密封误差相关联。 控制器检测先前的加油事件的完成，将来自压力传感器的测量值与控制孔口上的参考真空度进行比较，以确定阈值大泄漏的存在，并且仅在先前完成的情况下设置对应于大泄漏的诊断代码 加油事件 用于检测大泄漏的方法包括检测加油事件的完成，将来自绝对压力传感器的真空测量与穿过孔的参考真空进行比较，以确定是否存在大泄漏，并且设置对应于大泄漏的诊断代码 完成以前的加油事件。
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公开(公告)号：US20130031962A1
公开(公告)日：2013-02-07
申请号：US13611547
申请日：2012-09-12
IPC分类号： G01M3/34
摘要： A reconfigurable leak testing system is provided that includes a leak testing station and at least one off-shuttle cart removably attachable to the leak testing station. A fixture cartridge is translatable between the off-shuttle cart and the leak testing station. The fixture cartridge is configured to selectively couple with the leak testing station. The fixture cartridge includes an upper fixture, a lower fixture, and an actuatable testing feature. The fixture cartridge is configured to receive a part between the upper fixture and lower fixture. The actuatable testing feature is configured to contact the part. A closed volume is defined at least partially by the actuatable testing feature and the part.
摘要翻译： 提供了一种可重构的泄漏测试系统，其包括泄漏测试站和至少一个可拆卸地附接到泄漏测试站的脱钩车。 夹具卡盘可在穿梭车和泄漏检测站之间平移。 固定盒被配置为选择性地与泄漏测试站联接。 固定盒包括上部固定装置，下部固定装置和可致动的测试特征。 固定盒被配置为接收上部固定装置和下部固定装置之间的部件。 可启动测试功能被配置为与零件接触。 至少部分地由致动测试特征和部分限定闭合容积。
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公开(公告)号：US08191401B2
公开(公告)日：2012-06-05
申请号：US12364947
申请日：2009-02-03
申请人： Chiara Daraio
发明人： Chiara Daraio
CPC分类号： C09K3/00 , G10K15/00 , G10K15/043
摘要： A method and system supporting the formation and propagation of tunable highly nonlinear pulses using granular chains composed of non-spherical granular systems. Such a method and system may be used to support the creation of tunable acoustic band gaps in granular crystals formed of particles with different geometries (spherical or not) in which the tunability is achieved by varying the static precompression, type of excitation and/or pulse amplitude in the system.
摘要翻译： 一种使用由非球形颗粒系统构成的颗粒链支持可调高度非线性脉冲的形成和传播的方法和系统。 这种方法和系统可以用于支持由具有不同几何形状的颗粒（球形或非球形）形成的颗粒状晶体中的可调谐声带间隙的创建，其中通过改变静态预压缩，激发和/或脉冲的类型来实现可调性 幅度在系统中。
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