Development of portable water hammer accumulator for domestic water system

Abdullah, Mohd Helmi (2015) Development of portable water hammer accumulator for domestic water system. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The low pressure of water supply is the common problem experience by domestic water user. However, in some area experience high water pressure, which can cause another problem. This high water pressure can cause leaking problem on the weakest part of the pipe especially at joining and elbow. This leaking is happening due to the shock pulsation or water hammer. This project is to identify on concept, principles and function of the water hammer accumulator to overcome leaking at elbow and joint part of pipe, design and develop the portable bladder accumulators which have different pressure for domestic water system and to analyze the efficiency of different pressure of portable bladder accumulator. This project is started by designing a few concepts of the accumulators such as bladder type and spring type. After that, a concept screening was constructed to choose the best concept, hence the bladder type with the different pressure were chosen. Next, the chosen accumulators were transformed into the 3D drawing by using the solid work software before it was developed. In this project, the inner mechanism of the accumulator has a bladder which is filled with the compacted air. This bladder is functioning to absorb the shock increases of water hammer pressure resulted the pressure to increase slowly and steadily in the pipeline system without the failure of any part in the system. After that, the accumulator were tested by Testing Rig that was developed early. From the testing stage, the functionality of the accumulator was proven in solving the water hammer problem. The accumulator was able to increase the delay time to the pressure to reach the maximum pressure. Besides, it is also shown the accumulator able to reduce the rate of pressure rise almost 100% of the water hammer pressure.

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