Table of Contents
What is balancing line in boiler feed pump?
Balance line is used to balance the centrifugal pump shaft from axial thrust. Due to the axial thrust, pump bearings and internals will get damaged. To nullify this effect, a tapping from discharge end (between balancing & counter balancing disc) is connected to a balancing drum.
What is balancing drum in pump?
The balance drum is a device designed to balance axial thrust generated by impellers; it is usually combined with a thrust bearing which serves to compensate a small amount of residual axial thrust.
How does a balance piston work?
A balance piston is used in multistage dynamic compressors (centrifugal and axial) to reduce the load on the thrust bearing. As the gas passes through each stage, a differential pressure is developed that causes a net thrust toward the suction side of the impeller or vane.
What is balancing disc in multistage pump?
The balance disc is just after the last stage so it has full discharge pressure on one side. A line is routed from the other side of the balance disc back to the suction. The size of the drum is made so that it provides almost as much net thrust as all the impellers combined.
How do you do line balancing?
How can you achieve line balancing?
- Calculate takt time. Since the goal of line balancing is to match the production rate to takt time, being aware of your takt time is essential.
- Perform time studies.
- Identify bottlenecks and excess capacity.
- Reallocate resources.
- Make other improvements.
How do you use a balance disc?
Starts here5:18How to Use a Balance Disc for Core Exercises – YouTubeYouTube
Why does pump cavitation occur?
Cavitation occurs when the liquid in a pump turns to a vapor at low pressure. It occurs because there is not enough pressure at the suction end of the pump, or insufficient Net Positive Suction Head available (NPSHa). When cavitation takes place, air bubbles are created at low pressure.