A Study on Internal Shape of the Pressure Transmitter Relieving the Water Hammer Pressure

Abstract

When the pipe is suddenly closed, the fluid in the pipe is compressed in the closed part and the kinetic energy is converted into pressure energy and the pipe moves back and forth at high pressure. This phenomenon is called water hammer, and the water hammer can damage the pipe or the devices installed in the pipe. Particularly, when a pressure sensor mounted on a pipe is exposed to high pressure, there is a high possibility of malfunction or damage. Therefore, in this study, we tried to find a shape which can reduce the damage on the sensor through computational fluid analysis. before the actual experiment using Pulse-Snubber shape. The change in pressure was confirmed through computational fluid analysis When a narrow Pulse-Snubber was used, the peak pressure was lower and the occurrence time was delayed. This study is expected to be helpful in technology used in protecting pressure sensors.