Yokogawa Electric Corporation announced that it has developed a cavitation detection system as an OpreX Asset Management and Integrity family solution and will be releasing it for sale on January 31. Cavitation is a physical phenomenon whereby the differential pressure of a liquid in a pump or some other kind of plant equipment causes bubbles to rapidly form and then burst. The shock produced by the bursting of the bubbles damages the equipment. By detecting cavitation, quantifying information on this, and displaying this data in real time, this system provides an early indication of conditions that can result in a degradation in pump performance. By detecting problems early on, before damage occurs that can cause an increase in both vibration and noise levels, this solution improves the efficiency of plant maintenance.
- Real-time detection
The system that Yokogawa developed consists of a Stardom FCN-500 network-based control system, a Yokogawa cavitation detection logic program, and a highly accurate (±0.075%) DPharp EJX110A differential pressure transmitter, then relies on the Foundation Fieldbus industrial digital communication standard to link these components. At 100 ms intervals, the DPharp transmitter measures the pressure inside the target equipment, and this data is transmitted via the fieldbus network to the Stardom FCN-500 system for processing in real time by the logic program. This system is thus able to detect cavitation issues early on, enabling field personnel to take quick remedial action by, for example, reducing the flow rate to a level that suppresses cavitation without interfering with production line operations.
Valves, pumps, and other types of plant equipment can all experience problems such as cavitation that are caused by anything from the opening/closing of a valve, a change in viscosity level or some other physical property of a liquid, or a change in the external environment. Field personnel have conventionally relied on their own know-how and the use of analytical tools to find out what is causing these problems. Thanks to the development of this new system, field personnel will now have a tool that will help them troubleshoot problems with greater efficiency by identifying and quantifying cavitation in plant equipment.
Major target markets include oil, petrochemicals, chemicals, iron and steel, pulp and paper, water supply and wastewater treatment pharmaceuticals and food.