SURGE TANK AND WATER HAMMER UNIT

SURGE TANK AND WATER HAMMER UNIT

SURGE TANK AND WATER HAMMER UNIT The energy exerts itself in the form of a momentary increase in pressure above the normal static pressure. If the valve closes very rapidly the pressure rise can lead to the effect of pipe hammer, where a wave of energy travels within the pipe at the speed of sound, creating a sound, and potential damage. The pressure profiles are measured with the digital oscilloscope provided. A different phenomenon is experienced when a stream of water is fed through a pipe system that includes a chamber into which the buildup of pressure can find an outlet. Then the water will surge into the chamber, reducing or eliminating the hammer. This is tested in the surge apparatus.
In the configuration for surge tests the pipes are connected to a constant head tank. Hydraulics bench provides the water supply to the constant head inlet tank from a pump and control valve. The constant head means that water enters the 3 meters of test pipes before passing through the base of a surge tube. From the gate valve the water discharges into the volumetric tank in the hydraulics bench. The water is returned to the sump tank via a valve. Closure of the gate valve creates surge conditions.