SU1321685A1 - Vacuum deaerator - Google Patents

Abstract

The invention relates to energy and m. used in power plants and in heating boilers for water degassing. The invention allows to increase the hydrodynamic stability in operation. The overheated water is supplied through a tangential nozzle (P) 8 to the evaporative compartment (BUT) located outside the housing 1 of the deaerator. The latter is made in the form of cylindrical chambers (CC) 7, the generators of which are fixed on the end walls of the housing I perpendicularly last. When it enters the CK 7, the water twists along a helical trajectory. Non-interrupted water is discharged from CC 7 through the tangential I 9 and further discharged into the accumulator tank 1 1. The steam BUT through the overflow I 10 is supplied to; housing 1 deaerator under bubbling sheet 3. 2 Il. with f / (L 00 to O5 00 ate

Description

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The invention relates to power engineering, in particular to vacuum deaerators used in power plants and in boiler plants for the degassing of water,

The aim of the invention is to improve the hydrodynamic stability of the operation,

Fig, 1 is a schematic representation of the proposed vacuum deaerator; in fig. 2 is a section A-A in FIG. one.

The deaerator contains a cylindrical body 1, in which the water distributors 2 and the bubbling sheet 3 are located along the length of the pipe. The body 4 is connected to the nozzle 4 for supplying the source deaerated water, the nozzles 5, 6 for discharging deaerated water and steam. The evaporative compartment is made in the form of chambers 7, to which the nozzles 8 and 9 are connected tangentially to the supply of superheated water and removal of non-evaporated liquid. Chambers 7 communicate with the space under the bubbling sheet 3 by nozzles 10, and nozzles 6 and 9 by means of pipelines - with an accumulator tank 11.

The deaerator works as follows.

The source water is subject to deaeration, is fed into the housing 1 of the deaerator through the source water supply pipe 4 and enters the water distributors 2 and the bubbling sheet 3. The deaerated water is discharged from the bubbling sheet 3 and through the pipe 5 of the deaerated water drainage enters the battery 11, heated, and heated through the pipe 5 of the deaerated water outlet to the tank 11, warmed. is brought along the tangential nozzle 8 into the cylindrical evaporation compartment, made in the form of chambers 7, and twists in it along a helical trajectory. The pressure in chambers 7 is below atmospheric, as a result of which steam is released from superheated water. Non-evaporating water is discharged from chambers 7 through a tangential nozzle 9 and then through a drain pipe into an accumulator tank 11, Steam from the evaporative compartment via an overflow nozzle 10 is supplied to the deaerator body 1 under the bubbling sheet 3, at first it is treated with bubbling treatment, and then heated

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and jet degassing of the source water, non-condensed steam and leached gases are sucked off from deaerator 1 through pipe 6 of the vapor outlet.

The removal of the evaporative compartments from the deaerator case allows for a more rational use of its volume and an increase in productivity with the same dimensions of the case. In addition, the source of hydrodynamic instability is removed from the body of the deaerator — boiling overheated water eliminates the risk of hydraulic shocks and vibration destruction of the internal bodies.

In cylindrical evaporation chambers, the centrifugal forces are intensified by the process of separation of steam and non-evaporated water, which reduces the size of the evaporation compartments. Placing the evaporation compartments at the side end walls of the deaerator simplifies installation and repair of the deaerator, provides steam under the bubbled sheet from two opposite sides, aligns the vapor pressure field under the bubbling sheet.

Claims (1)

Invention Formula The vacuum deaerator comprising a horizontally mounted cylindrical housing disposed on Rusnė water distributors and bubble sheet and nsh evaporator compartment with fluid withdrawal conduit neisparyvsheys, deaeriruemoy water supply pipes, drain deaerated Vod and vapor, characterized in that in order to increase the hydrodynamic This stability, the evaporative compartment is made in the form of cylindrical chambers, the generators of which are fixed on the end walls of the body perpendicularly last, the nozzles supplying overheating This water and drainage of non-evaporated liquid are connected tangentially to the chambers, and the space under the bubbling sheet is communicated with the chambers by means of additionally installed inside the last connections. 1321685 / 1- / 1 2