Samson Aktiengesellschaft

Ksb Aktiengesellschaft

Ksb Se & Co. Kgaa

Domagoj Vnucec

Joerg Kiesbauer

Thomas Paulus

Manfred Oesterle

Andreas Sander

Nadine Wetzstein

Dirk Hoffmann

Jörg Kiesbauer

Uwe Kirbs

Ulrich Konigorski

Julian Fuchs

Steckenreiter Thomas

The invention relates to a control valve for adjusting a process fluid flow of a process plant, comprising a valve housing with a valve seat and a valve member connected to a valve rod, which cooperates with the valve seat for opening and closing the control valve, wherein the valve rod is electrically connected to the valve housing through a contact device. The invention is characterized in that a measuring device for the ohmic transition resistance measurement of the contact device is provided, and that the measuring device is arranged in a measuring line that connects the valve housing to the valve rod.

Control valve

In a throttle body for reducing the fluid pressure, particularly at a control valve, preferably for arranging in a process fluid line, of a process plant, such as a chemical plant, particularly a petrochemical plant, a power plant, a brewery or the like, with a plurality of channels extending from an upstream channel inlet to a downstream channel outlet, it is foreseen that an at least section-wise curved course of at least one of the plurality of channels between the channel inlet and the channel outlet deviates from a two-dimensional extension.

Throttle body with a plurality of channels extending three-dimensional spiral-shaped

An apparatus and method for closed-loop-control of a fluid conveying system that include at least one pump, at least one consumer, at least one controller valve, and at least one armature as an actuator of the at least one control valve. Pressure and volume flow rate of the consumer are controlled independently of each other by a decoupling controller.

Decoupling of controlled variables in a fluid conveying system with dead time

In a method or system for controlling a process fluid stream within an industrial process plant, a pump is provided in series with a control valve having an associated positioner to control the fluid stream. A required fluid passage quantity for the process fluid stream is set by positioning the control valve with the positioner into a respective valve position and capturing an actual position of the valve. A physically sensible actual property value related to passage of the process fluid through the control valve is determined. The actual property value as well as the actual valve position are evaluated by an evaluation routine with respect to a predetermined optimization parameter specific to the valve with its associated positioner. If a deviation occurs from the optimization parameter, a pump drive value for the pump and control valve position drive value for the valve positioner are tuned to each other in such a way that the optimization parameter is approached.

Method and system for controlling a process fluid stream and positioner

The invention relates to a method for monitoring the functionality of an actuator () having a pneumatic drive (), in particular for monitoring an actuator () for a safety valve, including a magnetic valve () for controlling the pneumatic drive (), wherein the magnetic valve () is monitored by means of a pressure measurement and is, for this purpose, connected to a first pneumatic conduit () to a position controller () of the actuator () as well as to the pneumatic drive () to a second pneumatic conduit (). The magnetic valve () is switched off and on again with a switching time (t-t). The switching time (t-t) of the magnetic valve () is detected at which, at the one hand, the switching time (t-t) is so short that the position of the actuator () remains essentially constant or unchanged and, on the other hand, it is, however, so long that a pressure drop (dp=P-P) in the first pneumatic conduit () in front of the magnetic valve () is present after switching the magnetic valve () on again.

Method and device for testing the functionality of an actuator having a pneumatic drive

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Ilvesheim, Germany

Domagoj Vnucec