a dryer

Abstract

The invention discloses a drier. The drier comprises a drier housing and a plurality of corrugated plates which are fixed in the drier housing, wherein steam outlet and inlet are formed on the other two sides of the drier housing, respectively; a porous plate is arranged at a steam inlet end; a drain tank is fixedly arranged in the bottom of the drier housing; the bottom of the drain tank is obliquely arranged along the flowing direction of steam; a water seal device which prevents a water body from flowing reversely is arranged in the bottom of the drain tank; by means of the drain tank which is arranged obliquely along the steam direction in the bottom and the water seal device which prevents the water body from flowing reversely, a hydrophobic volume of a hydrophobic structure of the drier along the flowing direction of the steam is gradually increased and the condition that drain water is taken away again by steam is reduced, so that a better hydrophobic effect is achieved, and the water seal device which prevents the water body from flowing reversely avoids the condition that the separated drain water is ejected reversely as the inner and outer air pressures of the drier are different. The drier is simple in structure and good in hydrophobic effect, and the production cost is lowered. The drier disclosed by the invention is used for the field of steam generators.

Description

Technical field [0001] The invention relates to the field of steam generators, in particular to a dryer. Background technique [0002] The steam generator in nuclear power plant or the top of the steam drum boiler in thermal power plant needs to be equipped with a dryer. Its function is to separate the tiny water droplets in the wet steam to turn the wet steam into dry steam, and then the dry steam enters the steam turbine to perform work to promote The generator generates electricity to ensure the safe operation of the equipment in the power station. [0003] The bottom drain plate of the dryer used in the steam generator of the existing nuclear power plant is generally a horizontal plate along the steam flow direction, that is, the drain volume of the existing dryer drain structure along the steam flow direction is constant. This structure does not match the hydrophobic flow characteristics well, resulting in poor hydrophobic effect, resulting in more hydrophobic being carried o...

AI Technical Summary

Problems solved by technology

[0003] The bottom hydrophobic plate of the dryer used in the steam generator of the existing nuclear power plant is generally a horizontal plate along the direction of steam flow, that is, the hydrophobic volume of the existing dryer hydrophobic structure is constant along the direction of steam flow. This structure cannot better match the hydrophobic flow characteristics, resulting in poor hydrophobic effect, resulting in more hydrophobic being carried out, resulting in lower separation efficiency of the dryer

[0004] In addition, due to the continuous change of transient pressure inside and outside the dryer, the static pressure outside the dryer may be greater than the static pressure inside the dryer. At this time, the water from the separator may be sprayed back, which will also cause the separation efficiency of the dryer reduce

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