SU1588716A2 - Deaeration column - Google Patents

Abstract

The invention relates to a power system and can be used for heating and deaerating water in thermal power plants. The purpose of the invention is to improve the quality of deaeration and increase productivity. The deaerated water from the bubble plates 3 through the tangential channels 10 enters the screw swirler 9 located in the central opening 4. The two-phase steam line is swirled onto the medium, the vapor-gas phase separates to the axis of the screw and is removed through the perforated gas outlet 8. stability in opening 4, which allows to increase the hydraulic load and prevent re-contamination of water when it is discharged from the column. 1 il.

Description

The invention relates to a power system, can be used for heating and deaerating water in thermal power plants and is in addition to the main author. St. No. 984995.

The purpose of the invention is to improve the quality of deaeration and increase productivity,

The drawing shows schematically a deaeration column, a longitudinal section. ,

The column contains the water distributor 2 located in the housing 1 and the deaerating device in the form of dumping trays 3 arranged symmetrically with the axis of the housing 1 with a central opening 4 framed by vertical partitions 5. The vertical baffles 5 of the tray 3, bounding the opening 4, are directed downwards and their lower edges form a water seal with a pallet-6 installed under the opening 4. The plates 3 are equipped with an integrated steam-discharge valve 7, made in the form of a hydraulic lock. A gas outlet — a perforated tube 8 — is coaxially located inside the opening 4, and between the walls of the opening 4 and pipe 8 is a screw swirl 9. Vertical partitions 5 are protruding above the plate surface.3i and in the projecting sections are equipped with tangential intake channels 10.

The column works as follows.

The water enters the perforated water distributor 2, by jetting it onto the bubbling plates 3, it fills the steam transfer valve 7 and through the channels 10 it enters the central opening, 4, from where

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five

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flows into the pallet 6 and further into the storage tank (not shown). Steam is supplied from below under the bubble plate 6, passing it and the jet compartment, the steam is condensed, and the non-condensable gases are removed to the outlet line (not shown). The steam duct on the mixture, entering through the channels 10 into the central opening 4, enters the screw channels of the screw swirl 9 and twists. In this case, the steam is separated to the axis of the screw and, together with the aggressive gases, is removed through the stacks in the gas discharge pipe 8,

The use of a screw vortex with a vapor pipe significantly increases the hydrodynamic stability of the two-phase flow in the central drainage aperture, which in turn allows increasing the hydrodynamic load and preventing the water from being re-contaminated when it leaves the column.

Claims (1)

Invention Formula The deaeration column according to the model, No. 984995, is characterized in that, in order to improve the quality of deaeration and increase productivity, it is additionally equipped with a central gas outlet perforated pipe and a screw swirler placed between the said pipe and the vertical partitions framing the central area, moreover, the vertical partitions are filled with the bubbling plates protruding above the plane and in the protruding sections are provided with tangential water receiving channels