SU1453116A1 - Steam attemperator - Google Patents

Abstract

Invention m. B. used in power plants. The purpose of the invention is to intensify spraying and mixing in a wide range of modes. The desuperheater contains a rotary atomizer mounted in the mixing chamber in the form of hollow blades 4 mounted on a shaft 4 with openings 5, 6 separated by a longitudinal partition. At low loads, the liquid enters in one stream into one of the nozzles 7 or 8 with the outflow of the jet in one direction. The speed of rotation of the sprayer is determined by the momentum of the jets. With a significant increase in the flow rate, the liquid is supplied through both nozzles 7, 8, i.e., when the jets run out, through the openings 5, 6 of the autonomous compartments 10, 11 of the blades 4. The rotation speed of the rotary atomizer decreases to its complete stop. There is a collision of the opposing liquid jets, which ensures optimal convective mass transfer, provided that there are practically no radial neretechs. 3 il.

Description

Fia.Z

I The invention relates to heat and power, and can be used in steam coolers of power plants.

The aim of the invention is to intensify atomization and mixing. in a wide range of modes.

FIG. 1 shows a desuperheater, a view; in fig. 2 - section A-A of FIG. one; in fig. 3 - rotary spray

The liquid flow redistributes the liquid jets into the peripheral layers of the steam flow, as a result of which the intensity of convective mass transfer decreases, then the liquid is supplied through both nozzles 7 and 8, i.e., with the opposite outflow of the jet through the holes 5 and 6.

The rotational speed of the rotary atomizer 2 is reduced to a complete stop. Collision occurs

The desuperheater contains installed liquid jets of opposing jets that provided the mixing chamber 1 with a rotary atomizer 2 in the form of 3 hollow vanes 4 mounted on the shaft 4 with outlet main and additional openings 5 and 6 made in the side walls of each blade 4 equipped with a main and additional feed ports 7 and 8, the openings 5 and b being located at an equal distance from the axis of the mixing chamber 1. The cavity of each blade 4 is divided longitudinally with respect to its partition walls-20 into autonomous compartments 10 and 11, each of which is connected respectively to the nozzles 7 and 8. Each nozzle 7 and 8 is equipped with a throttle valve (not shown) .25

The desuperheater works as follows.

Steam enters the mixing chamber 1. At low loads and, consequently, low costs of the cooling agent (the fluid flows in one stream into one -Q nozzles 7 or 8, while 1) the jets outflow in only one Direction, respectively, from orifice 5-6. 4t rotate at a speed dependent on

optimal convective mass transfer with the practical absence of radial leakages.

The location of the holes 5 and 6 at a distance of .0.4 of the diameter of the chamber 1 provides optimal conditions for the distribution of the liquid in the steam flow.

Claims (1)

Invention Formula A desuperheater containing a rotary atomizer coaxially mounted in the mixing chamber in the form of hollow blades mounted on a shaft with outlet openings made in one of the side walls of each blade equipped with its inlet nozzle, and the holes in the blades are located equal distance from the axis of the mixing chamber , characterized in that, in order to intensify spraying and mixing in a wide range of modes, each blade is provided with an additional feed pipe, in its other side wall are made For more outlet openings arranged similarly to the first and the cavity kazh 1 mpuls of flowing streams of liquid, with 35 blades divided longitudinal  increase the level of turbulence in the zone of interaction of the components and the intensity of mass exchange. With a significant increase in its walls by a partition into autonomous compartments, each of which is connected to one of the inlet pipes. The liquid flow redistributes the liquid jets into the peripheral layers of the steam flow, as a result of which the intensity of convective mass transfer decreases, then the liquid is supplied through both nozzles 7 and 8, i.e., with the opposite outflow of the jet through the holes 5 and 6. The rotational speed of the rotary atomizer 2 is reduced to a complete stop. Collision occurs  oncoming liquid streams that provide fast liquid streams, which ensures an optimal convective mass transfer under the condition of the practical absence of radial overflows. The location of the holes 5 and 6 at a distance of .0.4 of the diameter of the chamber 1 provides optimal conditions for the distribution of the liquid in the steam flow. Invention Formula A desuperheater containing a rotary atomizer coaxially mounted in the mixing chamber in the form of hollow blades mounted on a shaft with outlet openings made in one of the side walls of each blade equipped with its inlet nozzle, and the holes in the blades are located equal distance from the axis of the mixing chamber , characterized in that, in order to intensify spraying and mixing in a wide range of modes, each blade is provided with an additional feed pipe, in its other side wall are made For more outlet openings arranged similarly to the first and second cavity kazh th blade is divided with respect to the longitudinal of its walls by a partition into autonomous compartments, each of which is connected to one of the inlet pipes. Steam Sh BUT 1 FIG. 2