Novel sea water desalinization evaporator

Abstract

The invention discloses a novel sea water desalinization evaporator, which comprises a steam inlet device, a sea water spraying device, an evaporator shell, a steam demister, a sea water inlet device, a fresh water collection outlet device, a strong brine outlet device, a heat exchange pipe bundle, a pipe plate, an internal bracket, an outer support seat and an external reinforcing bracket, wherein the evaporator shell is formed by connecting a plurality of shells of effect evaporators by welding; anticorrosive coatings are coated on the inner walls of the evaporator shells and welding seams between two adjacent evaporator shells; the heat exchange tube bundle and a rubber ring for a tube plate are elastically sealed and connected; and the tube plate is fixed on the internal bracket. The invention has the beneficial effects that the cost of the shells is reduced by over 50 percent; an integral welding structure solves the problem that the connecting parts among the effect evaporators is leaked; and the heat exchange tube bundle and the tube plate are elastically connected by using a rubber sealing ring, thereby not only avoiding the problem that the connecting part is leaked, but also reducing the vibration strength of the heat exchange during use and improving the reliability and the service life of the equipment.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and relates to a seawater desalination evaporator, in particular to equipment for producing fresh water after seawater is evaporated and condensed. Background technique [0002] At present, in order to prevent seawater corrosion, the known seawater desalination evaporators mostly use duplex stainless steel or composite stainless steel plates to make the shell, and the connection between the effect evaporator and the effect evaporator mostly adopts flange connection. The usual seawater desalination evaporator heat exchange tube The connection between the tube bundle and the tube sheet is welded or expanded. The deficiencies of the prior art are: the processing and manufacturing of the shell is difficult and the production cost is high; the flange connection between the effect evaporator and the effect evaporator is easy to leak at the flange connection, so that the inside of the evap...

AI Technical Summary

Problems solved by technology

The deficiencies of the prior art are: the processing and manufacturing of the shell is difficult and the production cost is high; the flange connection between the effect evaporator and the effect evaporator is easy to leak at the flange connection, so that the inside of the evaporator cannot form a normal working condition. Conditions: The welding or expansion method between the heat exchange tube bundle and the tube sheet, due to factors such as vibration and corrosion of the heat exchange tube bundle during operation, the joint is easy to open and leak after long-term use, resulting in the evaporator not working properly

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