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热词
    • 9. 发明授权
    • Flow failure detector
    • 流量故障检测器
    • US4937558A
    • 1990-06-26
    • US318516
    • 1989-03-06
    • Alain RobinetDidier Thomas
    • Alain RobinetDidier Thomas
    • G01P13/00
    • G01P13/002
    • A device and system for detecting the existance of fluid flow from a fluid source to a pipeline includes a cylinder with an inlet at a first end and a lateral outlet. A piston in the cylinder is moveable from a no-flow position abutting the first end in which it is maintained by a spring, to a flow position in which the piston at least partly opens the lateral outlet, by fluid flowing from the inlet to the lateral outlet. A magnetic switch detects the no-flow position of the piston, and actuates a radio transmitter to send a no-flow condition alarm. The device is used to detect interruptions in the supply of additives to oil and gas pipelines.
    • 用于检测从流体源到管道的流体流的存在的装置和系统包括具有在第一端处的入口和侧向出口的圆柱体。 气缸中的活塞可从邻近其由弹簧保持的第一端的无流动位置移动到活塞至少部分地打开侧向出口的流动位置,该流动位置通过流体从入口流到 侧向出口。 磁力开关检测活塞的无流动位置,并致动无线电发射器发送无流量状态报警。 该装置用于检测石油和天然气管道添加剂供应中断。