초록 ▼

A diagnostic apparatus for diagnosising of a valve device in a turbine system comprises at least one of a pressure sensor for sensing hydraulic pressure in a hydraulic cylinder for driving a valve body of the valve device and a position sensor for sensing the displacement of the valve body, and a pr

A diagnostic apparatus for diagnosising of a valve device in a turbine system comprises at least one of a pressure sensor for sensing hydraulic pressure in a hydraulic cylinder for driving a valve body of the valve device and a position sensor for sensing the displacement of the valve body, and a processing device for processing the output signal from the above-mentioned at least one sensor. The processing device has an offset computing device which receives a signal representing the actual operating state of the valve device obtained on the basis of the output signal from the at least one sensor and a signal corresponding to a reference value obtained under the normal operating state of the valve device. The offset computing device is operable to compute the offset between the signals received thereto. A judging device is provided for judging as to whether or not there is a symptom of a sticking in the valve device, in accordance with the output signal from the offset computing device.

대표청구항 ▼

A diagnostic apparatus for diagnosing a state of a valve device in a turbine system, said apparatus comprising: first sensor means for sensing the state of operation of said valve device; second sensor means to sense that said valve device is in a fully open position; third sensor means to sense tha

A diagnostic apparatus for diagnosing a state of a valve device in a turbine system, said apparatus comprising: first sensor means for sensing the state of operation of said valve device; second sensor means to sense that said valve device is in a fully open position; third sensor means to sense that said valve device is in a fully closed position; processing means connected to said first sensor means and to judge whether there is any abnormality in the operation of said valve device in accordance with the output from said first sensor means and to display the result of the judgement; and means for interrupting the operative connection between said first sensor means and said processing means when one of the fully opened position and the full closed position of said valve device is sensed by one of said second sensor means respectively and said third sensor means.