Patent application number | Description | Published |
20110146799 | METHOD AND SYSTEM FOR CONTROLLING A PROCESS FLUID STREAM AND POSITIONER - 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. | 06-23-2011 |
20110247484 | ACTUATING DRIVE FOR POSITIONING A FINAL CONTROL ELEMENT AND METHOD FOR CAPTURING A POSITION OF THE FINAL CONTROL ELEMENT - In an actuating drive or method for capturing a position of a final control element to be positioned by a drive member of the actuating drive, the final control element is pushed from an initial position to a target position by a spring body acting on the drive member. A first reference position is spatially configured in a vicinity of or at the spring body. A second reference position moving relative to the first reference position during positioning movement of the drive member is spatially configured adjacent a first outer surface of the spring body. A distance between the first reference position and the second reference position is captured. | 10-13-2011 |
20110252895 | METHOD FOR DETERMINING AN OPERATING POSITION OF AN OPEN/CLOSED-VALVE AND FIELD DEVICE - In a method or field device for determining a position of an open/closed-valve positioned by a pneumatic actuating drive and movable to a completely opened open position and a closed position depending on operating requirements, during normal operation a pneumatic working chamber of the actuating drive is pneumatically influenced with an i/p converter such that the open/closed-valve moves to one of the open/closed positions and, in case of a predetermined operating condition, the i/p converter allows the working chamber to vent so that the open/closed valve automatically moves to the other one of the open/closed positions. At least one of pressure prevailing in the working chamber and pneumatic control pressure output at the i/p converter is captured continuously over time, thus obtaining a pressure change over time on the basis of which a physical operational variable of the open/closed-valve is determined. | 10-20-2011 |
20120001103 | CONTROL DEVICE - In a control device for a technical processing plant, a pneumatically driven actuator having an actuator stem is provided together with a valve operated by the actuator, the valve having a valve stem. A valve element is attached to the valve stem. A stem connector connects the two stems to each other for a forced transmission of axial actuating movements and for modifying an axial distance between adjacent ends of the valve stem and the actuator stem to adjust a total axial length of the two stems. The stem connector comprises two half-shells connected to each other, and two positioning devices are provided for a friction-locking coupling of the half-shells to the respective ends. At least one of the positioning devices is designed to modify an axial attachment position of the half-shells along one of the stems. | 01-05-2012 |
20120024082 | PROCESS VALVE INCLUDING A FORCE MEASURING DEVICE - The invention relates to a process valve ( | 02-02-2012 |
20120091376 | ACTUATOR FOR CONTROLLING A FLUID FLOW - The invention relates to an actuator ( | 04-19-2012 |
20120112104 | ACTUATOR FOR CONTROLLING A FLUID FLOW - The invention relates to an actuator ( | 05-10-2012 |
20130037121 | DECOUPLING OF CONTROLLED VARIABLES IN A FLUID CONVEYING SYSTEM WITH DEAD TIME - In a method or apparatus for closed-loop-control of a fluid conveying system, at least one pump, at least one consumer, at least one controller valve, and at least one armature as an actuator of said control valve are provided. Pressure and volume flow rate of the consumer are controlled independently of each other by means of a decoupling controller. | 02-14-2013 |
20130199637 | CONTROL VALVE FOR ADJUSTING A PROCESS MEDIUM FLOW OF A TECHNICAL PROCESS INSTALLATION - In a control valve for adjusting a process medium flow of a technical process installation, a housing is provided with an interior to be traversed by a process medium. A valve seat is disposed inside the housing interior. A valve number is provided obstructing or clearing the valve seat wherein a flow cross section of the control valve can be altered according to a relative position between the valve member and the valve seat for adjusting the process medium flow to initiate a pressure change in the process medium flow between an upstream and a downstream duct section. An electrical consumer is provided. A thermoelectric element is coupled to supply electrical power to the electrical consumer. The thermoelectric element is disposed at a position in the housing interior for generating the electrical power resulting from a temperature difference that accompanies a pressure difference at a location of said position of the thermoelectric element. | 08-08-2013 |
20130340864 | PROCESS VALVE INCLUDING A FORCE MEASURING DEVICE - The invention relates to a process valve ( | 12-26-2013 |
20140047902 | DEVICE AND METHOD FOR QUANTIFYING A LEAKAGE FLOW ON AN ACTUATOR - In a method or device for quantifying a leakage flow on a process control valve, an intact reference control valve is used to determine several reference flow values in advance by placing the reference control valve in several reference opening positions and measuring the respective reference flow value for each of the reference opening positions. When determining the respective reference flow value, a reference mechanical vibration acquired in an environment of the reference control valve is allocated to the respective reference flow value. An instantaneous mechanical vibration is determined on the process control valve when it is closed. The reference mechanical vibration coming closest to the determined instantaneous mechanical vibration is identified by an identity or approximation comparison. The leakage flow is equated with the reference flow value allocated to the identified reference mechanical vibration. | 02-20-2014 |
20140077117 | FLUIDTECHNISHES FLACHSCHIEBERVENTIL - The invention relates to a flat gate valve for fluid applications having a sandwich design and including at least one input port, one output port, a top plate and a bottom plate, with a sliding element being provided between said top plate and said bottom plate, which sliding element can be used to modify the fluid paths and flow characteristics which are adjusted by the position of the sliding element relative to the top plate and the bottom plate. The invention is characterized in that at least one spacer is provided between said top plate and said bottom plate which defines a distance of said top plate to said bottom plate, which distance is larger by a gap of a defined gap size than the thickness of said sliding element, wherein the sealing of the flat gate valve is exclusively accomplished by means of the set gap. | 03-20-2014 |