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1. 发明授权

US6067844A Nondestructive method for detection of defects and the condition of liners in polymer-lined pipes and equipment 失效
标题翻译：用于检测聚合物衬里管道和设备中缺陷和衬垫状况的非破坏性方法
公开(公告)号：US6067844A
公开(公告)日：2000-05-30
申请号：US911684
申请日：1997-08-15
申请人： Paul Alfred Westbrook , Roderick Leonard Shulver
发明人： Paul Alfred Westbrook , Roderick Leonard Shulver
IPC分类号： G01N15/08 , G01M3/08
CPC分类号： G01M3/22 , G01N15/0826
摘要： The semi-permeable characteristics of polymeric liners may be used to characterize defects, if present, in loose liners contained inside piping and equipment. The use of polymer-lined equipment is common in the chemical, refining and other industries where the polymeric liner offers excellent chemical resistance and the outer shell gives the required strength and rigidity. Permeability characteristics of liners are investigated with particular reference to volatile process gasses and/or process-soluble tracer gasses. The resulting data are used to establish nondestructive testing techniques for evaluating the integrity of lined equipment during normal operation where a mass spectrometer equipped with a sampling probe is used as the sampling and sensing devices. Real-time data is compared to characteristic data, obtained under laboratory conditions, on a membrane of the polymer from which the liners are made. Acceptance or rejection of the equipment is determined by such comparison. Equipment containing defective liners may be removed from service before the defect causes a leak.
摘要翻译：聚合物衬垫的半渗透特性可用于表征管道和设备内部松动衬里的缺陷（如果存在）。聚合物衬里设备的使用在化学，精炼和其他行业中是常见的，其中聚合物衬里提供优异的耐化学性，并且外壳提供所需的强度和刚度。特别参考挥发性过程气体和/或过程可溶性示踪剂气体来研究衬管的渗透性。所得数据用于建立非破坏性测试技术，用于在正常操作期间评估衬里设备的完整性，其中配备有采样探针的质谱仪用作采样和感测装置。将实时数据与在实验室条件下获得的特征数据进行比较，其中制备衬垫的聚合物膜上。通过比较来确定设备的接受或拒绝。在缺陷引起泄漏之前，含有有缺陷的衬垫的设备可能会被从服务中移除。

2. 发明授权

US5929349A Inspection tool for measuring wall thickness of underground storage tanks 失效
标题翻译：用于测量地下储罐壁厚的检测工具
公开(公告)号：US5929349A
公开(公告)日：1999-07-27
申请号：US916608
申请日：1997-08-22
申请人： Ronald Marshall Bass , James Donald Haupt , Timothy Caywood Hurley , Richard Allen Littlefield , Paul Alfred Westbrook
发明人： Ronald Marshall Bass , James Donald Haupt , Timothy Caywood Hurley , Richard Allen Littlefield , Paul Alfred Westbrook
IPC分类号： G01B17/02 , G01H1/12 , G01H7/00 , G10K11/00 , G01M19/00
CPC分类号： G01B17/02 , G01H1/12 , G01H7/00 , G10K11/004
摘要： The invention comprises a tool which can be inserted through the fill nozzle of an underground fuel storage tank to measure the tank wall thickness. The invention, in a preferred embodiment, uses ultrasonic thickness measurement technology, a well known inspection technique. A special type of ultrasonic probe known as a ZIP (Zero Interface Probe) is required to measure the thickness of fiberglass. A thickness measurement is accomplished by pressing the tool transducers firmly against the inside surface of the fiberglass tank after applying a couplant gel to the surface of the transducers. The tool is connected to an ultrasonic flaw detector, which generates a transmitted pulse and displays the transmitted and reflected pulses on a display screen. The thickness is determined by measuring the time-of-flight (on the display screen) between appropriate pulses. The time-of-flight is proportional to twice the thickness (since the sound pulse must travel to the back wall and return), the proportionality factor being the speed of sound in the fiberglass (speed.times.time=distance).
摘要翻译：本发明包括一个可以通过地下燃料储罐的填充喷嘴插入以测量罐壁厚度的工具。在优选实施例中，本发明使用超声波厚度测量技术，众所周知的检查技术。需要一种称为ZIP（Zero Interface Probe）的特殊类型的超声波探头来测量玻璃纤维的厚度。厚度测量是通过将传感器凝胶施加到传感器的表面上之后，将工具传感器牢固地压在玻璃纤维槽的内表面上而实现的。该工具连接到超声波探伤仪，它产生一个发射的脉冲，并在显示屏幕上显示发射和反射的脉冲。通过测量适当脉冲之间的时间（在显示屏幕上）来确定厚度。飞行时间与厚度的两倍成正比（因为声音脉冲必须行进到后壁并返回），比例因子是玻璃纤维中的声速（speedxtime =距离）。

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