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Recently, Zhejiang Fangyuan Shipbuilding Co., Ltd. applied an innovative technology to the ship water supply system – “an energy-saving automatic speed control water supply device†obtained national patent; patent number is ZL 2012 2 0536741.8.
An energy-saving automatic speed regulation water supply device belongs to the technical field of ship water supply equipment. At present, the ship water supply generally adopts a pressure water tank type or a gravity water tank type, that is, water is pumped from a water source into a pressure water tank or a gravity water tank to supply water to the pipe network. The pressure water tank has defects such as insufficient water consumption, low water supply quality, and even oil mist of the organic cabin. The gravity water tank must be placed at a high level in the ship, the installation location is limited, and the maintenance management is not convenient for management. Since passenger ships and passenger rolling ships only supply water to the crew when they are moored, the water consumption is small, and there are many passengers during operation, the number of passengers changes greatly, the water consumption is large, and the water use cycle is irregular. There are water consumption peaks and low water use conditions. In addition to the different passenger groups, the quality of water is high, and the pressure water tank or gravity water supply cannot meet the water requirements of large changes.
The utility model can automatically adjust the water supply quantity of the water pump according to the demand of water consumption, and the water pump directly extracts the supply from the fresh water tank, without passing through the pressure cabinet, and there is no secondary pollution of the oil and gas in the engine room. Through frequency conversion control, the frequency and speed of the motor can be automatically adjusted according to the amount of power consumption, and the running power of the motor can be reduced. The structure is compact and the operation is convenient, and the water supply device can selectively use one, two or three full use. Good selectivity and flexible use.