Abstract: A system for suppressing cavitation in fluid pipeline passages such as fluid loading arms, particularly of the marine type, comprising extended turning vanes in the elbows of the loading arm, preferably in the upstream direction from the elbow tangent point, and also including the capability for adjusting the attack angle of the vane relative to the pipe axis. The combined effect of the extended vane and the negative attack angle improves cavitation performance to a greater extent than each of these expedients when used separately. This system obtains increased flow rates without significantly increasing the system back pressure and the adjustability of the attack angle will allow for optimization relative to changes in products and flow conditions.

Abstract: A probe for measuring the amplitude of high frequency pressure pulses in a high or low temperature fluid environment comprising a hollow housing structure having an open end covered by a flexible metallic diaphragm member. A transducer is located in the housing and is forcibly maintained in direct engagement with the diaphragm member. Pressure pulses in the high or low temperature fluid medium deflect the diaphragm member, which is in contact with the transducer, causing it to produce electrical signals representative of the pressure pulses impinging against the diaphragm member. These electrical signals are transmitted to electronic recording and analyzing equipment to provide an accurate reading of the sensed pressure pulses.

Abstract: Apparatus for sensing pressure pulses developed by the collapse of bubbles in a liquid flow system to enable measurement of the rate of erosion caused to material by cavitation. A sonic transducer, immersed in flowing liquid, generates voltages in response to pressure pulses developed by the collapse of bubbles in the liquid. The voltage representing each bubble collapse is transmitted to electronic equipment. The electronic equipment measures the magnitude of each voltage signal and counts the number of voltage signals representing the number of bubble collapses sensed by the sonic transducer thereby providing data from which the rate of erosion can be calculated.