Molybdenum-alloy disc-type flameproof motor seawater-desalination weld seam joint device

Abstract

The invention belongs to seawater-desalination special device, and discloses a molybdenum-alloy disc-type flameproof motor seawater-desalination weld seam joint device. The device comprises a seawater treatment pool, a pretreatment seawater sucker, a starting sucker, a high-pressure starting pump, a pipe tee joint, a reverse osmosis membrane and a welding-pressure-exchanging pressurizing machine pump. As an improvement, a pressurizing weld seam joint comprises a high-pressure-pipe weld end chamfer, a volute weld opening chamfer and a pressurizing outlet ring weld seam, the high-pressure-pipe weld end chamfer is located at the lower end of a conversion high-pressure pipe, the volute weld opening chamfer is located at the outer end of a volute weld outlet, the pressurizing outlet ring weld seam generates sealing connection between the conversion high-pressure pipe and the volute weld outlet, and a pressurizing weld seam joint is formed; the pretreatment seawater sucker is connected with a vertical weld-seam constant flow device in series, and a horizontal weld-seam constant flow device is connected between a high-pressure starting pump inlet and the starting sucker in series. The welding connection structure is adopted, high-pressure sealing connecting fixing can be achieved, particularly, the welding-pressure-exchanging pressurizing machine pump is additionally arranged, the structure is compact, and the energy saving effect is obvious.

Description

technical field [0001] The invention belongs to special equipment for seawater desalination, and in particular relates to a seawater desalination welding seam joint equipment of a molybdenum alloy disc flameproof motor with a pressure exchange hoist pump 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 seawater desalination technol...

AI Technical Summary

Problems solved by technology

In today's world, there are mainly a series of mechanical moving parts and electrical switching mechanisms in the pressure exchangers for liquid energy recovery and utilization in the field of seawater desalination. The high maintenance rate will eventually affect the production cost.

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