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    • 3. 发明申请
    • METHOD AND APPARATUS FOR DAMAGE DETECTION AND NONDESTRUCTIVE EVALUATION OF STRUCTURAL INTEGRITY USING HOLLOW GLASS FIBERS
    • 损伤检测方法和装置及使用中空玻璃纤维的结构完整性的非结构性评估
    • WO1997000428A1
    • 1997-01-03
    • PCT/US1996009011
    • 1996-06-06
    • OWENS CORNING
    • OWENS CORNINGARUMUGASAAMY, PanchadsaramCHASE, Kenneth, P.
    • G01J01/04
    • G02B6/032H02G15/28
    • A hollow glass fiber (100, 110, 134, 136, 138) is embedded within a structure to monitor the integrity of the structure. A signal is passed along the fiber with a resulting output signal being detected and analyzed to determine the integrity of the structure. The signal can be a light signal which passes through the hollow glass fiber to its opposite end (110b) or is reflected and detected at the end (110a) into which it was injected. Alternately, the signal can be a current/voltage signal which is injected into one end (110a) and received at the other (110b). While a coating (102, 104) on the interior and/or the exterior of the hollow glass fiber is required for operation when a current/voltage signal is utilized, it is currently believed to be preferred for a light signal as well.
    • 中空玻璃纤维(100,110,134,136,138)嵌入结构内以监测结构的完整性。 信号沿着光纤通过,并且检测和分析所得到的输出信号以确定结构的完整性。 该信号可以是通过中空玻璃纤维到其相对端(110b)的光信号,或者在被注入的端部(110a)被反射和检测的信号。 或者,信号可以是注入一端(110a)并在另一端(110b)接收的电流/电压信号。 当使用电流/电压信号时,需要中空玻璃纤维的内部和/或外部上的涂层(102,104)进行操作,因此目前认为对于光信号也是优选的。
    • 7. 发明申请
    • A METHOD AND A SYSTEM FOR DETECTING AND LOCALIZING LEAKS IN PRESSURIZED CONDUITS OR CONDUIT NETWORKS
    • 一种用于检测和定位加压导线或导线网络中的漏电的方法和系统
    • WO1992015820A1
    • 1992-09-17
    • PCT/DK1992000070
    • 1992-03-06
    • DANTEC MEASUREMENT TECHNOLOGY A/SVENDELBO, Niels, Jorgen
    • DANTEC MEASUREMENT TECHNOLOGY A/S
    • F17D05/02
    • H02G15/28F17D5/02G01M3/2807G01M3/2838
    • In conduits or conduit networks containing a pressurized medium, which is fed to one or both ends of a lengthy conduit section (1-8), in which the pressurized medium pressure is maintained substantially constant, detection and localization of leaks can take place by detecting a flow of the pressurized medium by measuring the flow rate solely at one feed end (9) of the conduit section in connection with the conduit being exposed to an external influence. After correction for natural deviations the measured values are stored in a software-controlled measuring apparatus (22). The measurement is repeated at regular time intervals which are shorter than a transient response for the flow rate determined at at least one previously measured relationship of the flow rate and the variation in the external action, e.g. at an initial measurement. The flow pattern is analysed and compared to preceding measurements, whereby the size of a possible leak is determined from the corrected stationary value of the flow rate, and the position of the leak in terms of distance from the measuring point is determined from the corrected value of the change of the flow rate.
    • 在包含加压介质的管道或管道网络中,该加压介质被供给到长期管道段(1-8)的一端或两端,其中加压介质压力保持基本上恒定,泄漏的检测和定位可以通过检测 加压介质的流动仅通过导管部分的一个进料端(9)处的流量来测量,导管暴露于外部影响。 在自然偏差校正后,将测量值存储在软件控制的测量装置(22)中。 测量以规定的时间间隔重复,该时间间隔短于在至少一个先前测量的流速关系和外部动作变化(例如, 在初始测量。 分析流量模式并将其与先前的测量结果进行比较,从而根据流量的校正的稳定值确定可能的泄漏的尺寸,并根据校正值确定泄漏距离测量点的距离 的流量变化。