Two-phase flow jet-type boosting heat exchanger

Abstract

The invention discloses a two-phase flow jet-type boosting heat exchanger. The cavity of a pressurizing mixing chamber is designed into a reducing structure so that a steam pressure drives a water pressure or the water pressure drives the steam pressure, namely, steam enters from a center and water enters from circumference or water enters from the center and the steam enters from the circumference. The working principles are injection and pumping, namely, a high-pressure fluid generates an injection fluid by a nozzle, the pressure is decreased at the outlet of the nozzle to pump a low-pressure fluid around, and the high-pressure fluid and the low-pressure fluid are mixed in the reducing structure of the mixing chamber. When the injection fluid is the steam, a Laval nozzle is adopted, and when the injection fluid is water, a reducing nozzle is adopted, so that the two-phase flow jet-type boosting heat exchanger can be suitable to be used for the occasion with relatively higher inlet steam pressure and relatively lower inlet water pressure and the occasion with relatively lower inlet steam pressure and relatively higher inlet water pressure. When in use, the heat exchanger has obvious pressurization and instantaneous heating effects, thereby saving electric energy and heat energy and decreasing use cost.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, and mainly proposes a two-phase flow jet boosting heat exchanger. Background technique [0002] Most of the existing jet-type steam-water mixing heat exchangers have no pressurization function, and a considerable number of drive pumps and other facilities need to be configured to realize thermal circulation. The speed is slow and the heat energy loss is large, which is not conducive to saving electric energy and heat energy. For this reason, the applied for patent "Double Shock Wave Variable Sound Velocity Booster Heat Exchanger" has fundamentally solved the drawbacks of the steam-water mixer without booster function, making it have the functions of a heat exchanger and a transfer pump, playing a role The purpose of saving heat and electricity, reducing the number of driving pumps and equipped power, and reducing usage costs. However, since the steam and water two-phase fluids are mixed i...

AI Technical Summary

Problems solved by technology

However, since the steam and water two-phase fluids are mixed in a cylindrical mixing chamber with pressure changes, the pressurization effect during the mixing process will be greatly affected, and the pressure of the output mixture can only reach steam ( or water) input pressure, it is only suitable for use in occasions with high inlet steam pressure and low water inlet pressure (atmospheric pressure). Relatively high, and the scope of use has certain limitations

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