CENTRIFUGAL MULTISTAGE PUMP AND MAINTENANCE METHOD OF CENTRIFUGAL MULTISTAGE PUMP

摘要

PROBLEM TO BE SOLVED: To efficiently discharge fluid in a casing at the time of maintenance and restrain the fluid from scattering at the time of an overhaul.SOLUTION: A centrifugal multistage pump comprises: a rotor provided with a plurality of impellers along a main shaft; and a casing configured so as to be able to be disassembled into a plurality of impeller chambers. By opening a drain hole, fluid in the casing is led to the drain hole via bypass holes provided in partition walls separating the impeller chambers, and discharged to the outside.SELECTED DRAWING: Figure 4