Chromium alloy flange squirrel-cage water-cooled motor type island and reef fresh water making appliance

Abstract

The invention belongs to appliances special for obtaining fresh water from oceans and provides a chromium alloy flange squirrel-cage water-cooled motor type island and reef fresh water making appliance. The improvement of the chromium alloy flange squirrel-cage water-cooled motor type island and reef fresh water making appliance is that a horizontal flange continuous flow device is connected in series between an inlet of a low-pressure lift pump and a low-pressure suction pipe, a perpendicular flange continuous flow device is connected between an inlet of a high-pressure make-up pump and a water supplementing suction pipe in series, a flange pressure exchanger and booster pump is composed of a pressure boost flange pump portion and a flange pressure exchanger portion, and the pressure boost flange pump is driven by a squirrel-cage I-type water-cooled motor. Because flange connection is adopted, the structure is convenient to assemble, disassemble and maintain; and especially, the flange pressure exchanger and booster pump is additionally arranged, a booster pump suction port of the pressure boost flange pump portion and a boost center exhaust hole of the flange pressure exchanger portion are directly aligned, and therefore the structure is compact. Besides, compared with a reverse osmosis membrane sea water desalination project with no additionally arranged flange pressure exchange booster pump, the reverse osmosis membrane sea water desalination project with the additionally arranged flange pressure exchange booster pump can reduce the energy consumption of obtaining unit fresh water by about 30%.

Description

technical field [0001] The invention belongs to a special device for obtaining fresh water from the sea, and in particular relates to a chrome alloy flange squirrel cage water-cooled motor island reef fresh water manufacturing device in which a pressure exchange hoist pump is added in a reverse osmosis seawater desalination system. Background technique [0002] With the advancement of science and technology, the population is increasing day by day, and people's desire to develop into the ocean is becoming stronger and stronger. Seawater desalination treatment is becoming more and more popular, and the energy consumption cost of seawater desalination has received special attention. Early seawater desalination used distillation, such as multi-stage flash technology, with an energy consumption of 9.0kWh / m3, and was usually only built in areas with low energy prices, such as Middle East oil countries, or areas where waste heat was available. In the 1970s, reverse osmosis seawate...

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Problems solved by technology

[0006] 3. The earliest and most successful developed countries that invested in seawater desalination, such as Japan, Denmark, Netherlands, Sweden, Norway, the United Kingdom, the United States, and Germany, have all made efforts in pressure exchange, but their highest exchange efficiency has not exceeded 95 %, and the supporting project is huge, too many control components such as external electrical drive and switching valves lead to frequent accidents, which eventually lead to a substantial increase in equipment investment and additional costs such as daily management and maintenance

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