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1. 发明授权

US5616829A Abnormality detection/suppression system for a valve apparatus 失效
标题翻译：阀门装置异常检测/抑制系统
公开(公告)号：US5616829A
公开(公告)日：1997-04-01
申请号：US401469
申请日：1995-03-09
申请人： James J. Balaschak , Masatsugu Fujio , Keiichiro Hayashi , Masatoshi Okano , David E. Thrall
发明人： James J. Balaschak , Masatsugu Fujio , Keiichiro Hayashi , Masatoshi Okano , David E. Thrall
IPC分类号： G01M3/00 , F16K31/04 , F16K37/00 , G01M3/02 , G01M3/04 , G01M3/18 , G01M3/26 , G01M3/36 , G21C17/00 , G21C17/003 , G21C17/02 , F16K31/05 , G01M3/08 , F16K13/04
CPC分类号： G01M3/184 , F16K31/046 , F16K37/0083 , Y10T137/8158
摘要： Provision of an abnormality detection and suppression system for a valve apparatus, which is capable of detecting abnormal states such as leakage through valve seats or a gland/packing assembly and coping with the abnormality while ensuring protection for the valve apparatus by controlling a driving unit for a valve stem on the basis of information as detected, by means of a vibration sensor, a temperature sensor and a strain sensor are disposed internally of a valve stem 4 at a portion thereof which lies outside of a valve casing of the valve apparatus. When vibration of the valve stem brought abut by leakage through valve seats is detected by the vibration sensor in a fully closed state of the valve apparatus, a valve body thereof is driven further in the valve closing direction by a driving unit 13 controlled by a control unit, both being disposed externally of the valve casing, until the leakage and thus the vibrations disappear while monitoring simultaneously a load applied to the stem by the strain sensor. On the other hand, when a temperature change of the stem is detected by the temperature sensor in the fully open state of the valve apparatus, the control unit decides that the temperature change is due to leakage through a gland/packing assembly 12 of the valve apparatus to thereby control the driving unit so that the stem is driven to move the valve body in the valve opening direction while monitoring simultaneously a load applied to the stem until the change in the temperature is canceled out.
摘要翻译：提供一种用于阀装置的异常检测和抑制系统，其能够通过阀座或压盖/包装组件检测到异常状态，并处理异常，同时通过控制阀装置的驱动单元来确保阀装置的保护基于检测到的信息的阀杆，通过振动传感器，温度传感器和应变传感器设置在阀杆4的内部，其位于阀装置的阀壳体外部的部分。当在阀装置的完全关闭状态下，振动传感器检测到阀杆的振动与阀座的泄漏相抵触时，其阀体通过由控制器控制的驱动单元13沿阀关闭方向进一步驱动两者都设置在阀壳体的外部，直到泄漏并且因此振动消失，同时同时监测应变传感器施加到杆的负载。另一方面，当在阀装置的完全打开状态下温度传感器检测到杆的温度变化时，控制单元判定温度变化是由于通过阀的压盖/包装组件12的泄漏装置，从而控制驱动单元，使得杆被驱动以在阀打开方向上移动阀体，同时同时监控施加到阀杆的负载，直到抵消温度变化。

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