A plate condenser with intermediate draining

Abstract

The invention discloses a plate condenser capable of intermediate liquid discharge, which comprises several A-type heat exchange plates, several B-type heat exchange plates, intermediate liquid discharge pipes, side sealing plates, an upper box body and a lower box body; The heat plates and B-type heat exchange plates are arranged alternately to form alternately arranged steam flow channels and cooling water flow channels; side sealing plates are connected to both sides of the heat exchange plate row to seal the flow channels; the upper box and the lower box are respectively connected to The upper and lower ends of the heat exchange plate row form the entrance and exit of the steam flow channel and the cooling water flow channel; the middle part of the A-type heat exchange plate is provided with a V-shaped gas-liquid separation chamber, and the V-shaped gas-liquid separation chamber is located on the upper end surface of the steam flow channel. A gas-liquid inlet is provided in the middle, and gas outlets are provided at both ends of the lower end surface; the middle liquid discharge pipe communicates with the bottom of each V-shaped gas-liquid separation chamber. The invention can speed up the liquid discharge speed, reduce the thickness of the condensed liquid film attached to the plates, reduce the thermal conduction resistance of the liquid film, and increase the phase change heat transfer coefficient of the plate condenser.

Description

technical field [0001] The invention relates to the field of condensers, in particular to a plate condenser capable of intermediate draining. Background technique [0002] Plate heat exchanger is a heat exchange device with high heat transfer coefficient and compact structure, which has been widely used in liquid-liquid heat exchangers. Since the heat coefficient of phase change is much larger than that of non-phase change, using plate heat exchangers for condensation heat exchange is a development trend of current condensers. At present, most plate condensers directly use liquid-liquid plate heat exchangers. Different from the single-phase liquid convective heat transfer, the steam condensation heat transfer in the plate heat exchanger is a complex process in which the gas-liquid two-phase flow has both heat transfer and mass transfer in a small space. Due to the small distance between the plates of the plate heat exchanger, the structure of the flow channel is complex, an...

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Problems solved by technology

But at present, this gas-liquid separation and condensation technology has only been studied in the tube-fin air condenser, and the research in the plate heat exchanger is still blank.

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