SU1281813A1 - Steam-water heater - Google Patents

Abstract

The invention can be used in industrial boilers and allows for improved efficiency by improving condensate cooling of the exhaust non-condensable gases. Due to the installation of peripheral guiding partitions (P) 10 with flanges, the condensate (K) moves to the vertical (outer) pipe (T) 12, in front of which it washes the pipes of the first turn and is supercooled. Supercooled To each section of the annular

Description

nineteen.

(P

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00

with

space through perforation 14 T 12 enters the annular gap between. 12 and the inner T 15. Through the perforation of the ring P 21, the condensate is jetted off onto a continuous ring P 19, from where through the openings 17 to the T 15 enters the lower part of the body and the steam flow and the vapor-air mixture through the perforation 13 T 12 enters into the gap between T 12 and 13, where the vapor is condensed on the jets of supercooled K. The air / vapor-enriched mixture is discharged through the 16 T 15 perforations. 5 Il.

one

The invention relates to heat exchangers installed in regeneration and heat supply systems and with steam of turbines or boilers for industrial boilers selected for water heating.

The purpose of the invention is to increase efficiency by improving the condensate cooling of the exhaust non-condensable gases.

Figure 1 shows the steam heater, longitudinal section; figure 2 - mixing cooler, a longitudinal section; on fig.Z - section aa in figure 1; figure 4 - section bb in figure 1; figure 5 is a section b-In 2.

The heater contains a water chamber 1 with nozzles 2 and 3, respectively, the inlet and outlet of the heated medium (water), the housing 4 with the nozzle 5 for the steam inlet and the nozzle 6 for the outlet of the heating steam condensate. The housing 4 is attached to one chamber 1 by means of a flange 7. The level of condensate in

housing A is monitored by a water-warning device 8. Inside the housing 4 there is a pipe system 9 and guiding partitions 10, which divide the annular space in section 11. In the zone of the first course of water the pipe pipe is installed along its entire length for 12 seconds. perforations 13 and 14, and in it - an inner tube 15 with rows of perforations 16 and 17. A gap 18 is formed between the tubes 12 and 15.

In the annular gap 18 there are installed continuous annular partitions 19 located above the guiding partitions 10 and forming together with the sections of the annular gap 18 of the section 20 of the mixing cooler divided by perforated partitions 21 into the upper and lower chambers 22 and 23.

The perforated inner tube 15 communicates with the nozzle 24 for removing non-condensable gases. The baffles 10 are provided with ribs 25 arranged along their periphery.

During operation of the preheater, the flow of heated water through the nozzle 2 enters the central part of the water chamber 1, from where into the pipes of the heating surface of the first stroke of the system 9 located around the outer pipe 12. Through the rotary water chamber the water enters the pipes of the second stroke of the system 9, after they are discharged into water chamber 1 and discharged from the steam heater through pipe 3.

The heating steam flow through the pipe 5 enters the body 4, where it is distributed in the annular gap between the body 4 and the pipe system 9 over its entire height through sections 11. The steam enters first the pipes of the second and then the first course of heated water. On the pipes of the heating surface of the pipe system 9, steam is condensed and drained into the partitions 10. Thanks to the flanges 25 installed along the periphery of these partitions, the condensate moves to the vertical (outer) pipe 12 in front of which it washes the pipes of the first turn and is supercooled. The supercooled condensate of each section 11 through perforation 14 in pipe 12, made at the level of partitions 10, enters the annular gap 18 formed by pipes 12 and 15. Through perforations on the annular partition 21, the condensate is poured off by jets into a continuous annular partition 19, From there, through the bottom row of perforations 17 on the inner tube 15, it is drained through

the latter on the tube plate of the rotating water chamber, from where it enters the lower part of the housing 4 and is discharged through the pipe 6, the steam flow, as well as the vapor-air mixture at the outlet of the pipes of the heating surface of the first stroke of the pipe 9 through the perforation 13 on the outer pipe 12 enters An annular gap 18, where steam is condensed on the streams of supercooled condensate, the concentration of air in the steam increases and the air-rich vapor-air mixture through perforations 16 enters the pipe 15, from where it is discharged through the nozzle 24.

Claims (1)

Invention Formula A steam heater comprising a vertical case with a pipe system installed therein, baffles dividing the annular space into sections and placed mainly in the zone of the pipes of the first course of the heated medium by the mixing cooler with a perforated pipe, and a non-condensing gas outlet nozzle, characterized in that , in order to increase efficiency by improving the figures ./ 0 five neither condensate exhaust gases of non-condensable gases, the heater is equipped with an additional perforated tube placed outside the main and coaxial pipes, forming an annular gap between them and alternating solid and perforated partitions arranged in it, while the cooler is made sectioned, but each section is formed by sections of a ring gap and solid partitions, divided by perforated partition into the upper and lower chambers, each of which is communicated The perforation of the additional pipe with the annular section adjacent to it, respectively, above and below the baffles, the perforations of the additional pipe of the upper chambers are made at the level of the upper planes of the baffles, and each lower chamber is communicated through several rows of perforations of the main pipe , the lower row of perforation of the main pipe in each lower chamber is made at the level of the upper planes of solid partitions. / - / / " / - " Fig.Z It Fig a / J. ,15 Fav.5