Pressure regulated method for preventing cavitations in a technical system

Abstract

A pressure regulated method for a technical system that serves to prevent cavitations in a liquid medium, which is conveyed inside a conduit section consisting of a pump, a pressure sensor, a flowmeter and of a first valve. The pump pressure of the pump is regulated by the pressure sensor and the flowmeter in such a manner that the liquid pressure does not fall below the vapor pressure of the medium.

1 - 3 . (canceled)  
   
   
       4 . A pressure control method for a technical system, for preventing cavitation in a liquid medium which is transported in a section of piping, the system comprising a pump, a pressure sensor, a flow rate meter, and a first valve ( 4 ), the method comprising the step of: 
 controlling the pump pressure of the pump with the pressure sensor and the flow rate meter such that the liquid pressure does not sink below the vapor pressure.    
   
   
       5 . The pressure control method as claimed in  claim 4 , wherein: a second valve is arranged parallel to the first valve, said method further comprising the step of: 
 alternately opening and closing the two valves.    
   
   
       6 . The pressure control method as claimed in  claim 4 , wherein: a buffer container, with the second valve and the pressure sensor, is arranged between pump and flow rate meter, said method further comprising the steps of: 
 registering the headspace pressure in the buffer container;    controlling the head space pressure with the second valve; and    actuating the second valve by the flow rate meter and the pressure sensor.