Prof. Dr.-Ing. Dr. h. c. Uwe Hampel
Experimental Thermal Fluid Dynamics
Phone: +49 351 260 2772
Dr. Björn Wolf
Head HZDR Innovation GmbH
Head Technology Transfer & Innovation
Phone: +49 351 260 2615
Prevention of water hammer in fast-acting valves
When when valves trip, pressure surges may be caused, that threaten the pipeline, its suspension or the valve itself. These pressure pulses are to be prevented at the fastest possible closing of the liquid stream.
It was developed an arrangement (ABS-valve), which adaptively adjusts the closing to the parameters of the liquid stream. In addition, the valve is equipped with a hydraulic brake, which is controlled by the medium pressure in front of the valve. If the pressure exceeds the permitted limit, the closing process and therefore the upstream water hammer is suspended. Downstream a rebound damper is arranged at a suitable position, that prevents the collapse of the cavitation bubble.
- Licensing of construction and marketing of ABS Fittings
- Dimensioning of shut-off devices
- Consultancy of users