ELECTRICALLY-DRIVEN WATER FEED PUMP SUBSYSTEM AND ELECTRICALLY-DRIVEN WATER FEED PUMP SYSTEM FORMED BY SAME

摘要

An electrically-driven water feed pump subsystem comprises a frequency converter, a water feed pump, a motor, a gear case, and a front-mounted pump. The frequency converter is connected to the motor by means of a cable. The motor is connected to the front-mounted pump by means of a coupler. The motor is also connected to the gear case by means of a coupler. The gear case is also connected to the water feed pump by means of a coupler. An electrically-driven water feed pump system formed by the electrically-driven water feed pump subsystems. The work doing efficiency of the electrically-driven water feed pump system is greatly improved, energy consumption of the electrically-driven water feed pump system is directly reduced during work doing, harm and damage to an electric power supply system caused when the motor is started are reduced, and meanwhile the expenditure of daily overhaul and maintenance costs are directly reduced.