Modeling the stiction effect in automatic compressor valves

Performance of Automatic Compressor Valves

Simplified Theory Applied to Automatic Compressor Valves

Detection of Stiction in Control Valves

Valve stiction is one of the largest stand-alone reasons for oscillatory behavior in process industry. It is reported by Siemens Oil and Gas that valve stiction is a problem that is hard and time consuming to detect at offshore production plants for oil and gas. As a result, Siemens Oil and Gas wants to develop an algorithm that detects stiction. The algorithm is thought to be a feature of the ...

A new stiction compensation method in pneumatic control valves

AbstractIn this paper, a new compensator is designed so as to eliminate the effect of stiction in the control loop. A wellknown stiction compensation method is proposed that reduces variability both at process variable and valve stem movement. Pneumatic control valves are widely used in the process industry. Stiction is the most common and one of the long-standing problems in the pneumatic cont...

The Influence of Liquids on Compressor Valves

The presen~e of liquids in a ~ompressor valve environment is a major fa~tor in the life of a valve or sealing element. The nature of the fluid, the quantity in the system and the distribution of the fluid are of major ~onsequen~e. Through the use of modelling techniques these influen~es are analyzed, specifi~ally th~ affe~t of geo•etry on the sti~king effect. Several solutions to redu~e the eff...