Plate type condenser

Abstract

The invention discloses a plate type condenser which comprises a box body, a plate type heat exchange module, a convergence box, a cold source inlet, a cold source outlet, a steam inlet, a condensed liquid outlet and a non-condensed gas outlet. A condensed liquid collecting cavity is formed in the lower portion of the box body. A partition plate is arranged in the convergence box. The plate type heat exchange module comprises multiple heat exchange plate pairs. Condensation object one-time flowing channels are formed between the heat exchange plate pairs. Cold source medium return runners are arranged in the heat exchange plate pairs. Each cold source medium return runner comprises multiple circumferential channels provided with independent medium inlet and outlet openings, and pass partition plates arranged in the circumferential channels to enable cold source media to pass and flow in a reciprocating manner along the circumferential channels. Heat exchange plates of the plate type condenser divide the interior of the box body into the evenly-distributed cold source media and evenly-distributed steam channels, the internal space of the box body is sufficiently utilized, in addition, the steam flow resistance is small, and the condensing efficiency is high; and non-condensed gas is discharged in time through the non-condensed gas outlet in the side face of the condensed liquid collecting cavity, the negative pressure in the box body is ensured, and the condensing efficiency of the condenser is improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a plate condenser. Background technique [0002] The exhaust steam condensing device of the steam turbine in the thermal power plant is used to condense the exhausted exhaust gas from the steam turbine into condensed water, and then send the condensed water back to the boiler to continue circulation. It is an important part of the power generation system. The quality of its working performance directly affects the thermal economy and operational reliability of the steam turbine. [0003] At present, most heat exchange and condensation condensers adopt a tubular surface heat exchange condensing structure. The steam passes through the cooling tube bundle in the box and undergoes heat exchange and condensation with the surface of the tube. The design and layout of the tube bundle cannot make full use of the effective cooling area in the box. The steam passing resist...

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Problems solved by technology

[0003] At present, most heat exchange and condensation condensers adopt a tubular surface heat exchange condensing structure. The steam passes through the cooling tube bundle in the box and undergoes heat exchange and condensation with the surface of the tube. The design and layout of the tube bundle cannot make full use of the effective cooling area in the box. The steam passing resistance is large, the condensed water is too cold, the condensation efficiency is low, and the tube bundle is not easy to maintain and clean; and the side of the box needs to be equipped with a rear water tank for cooling water, the volume of the condenser is large, and the rear water tank and the tube bundle The seal between them is not easy to ensure; at the same time, the condenser cannot extract the steam that cannot be cooled in time or the air that leaks in in time, resulting in an increase in the supercooling degree of the condensed water, making it difficult for the steam to condense, and the temperature of the cooling water rises. poor economy

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