DD223516A1 - STANDING HEAT TRANSFER FOR CONDENSING MEDIA WITH SEVERAL WATERWAYS - Google Patents

Abstract

The invention relates to a standing heat transfer medium for condensing media with multiple waterways and a Rohrbuendel enclosing inner shell. The aim is to allow Kondensatkuehllichen for these heat transfer without costly design of Kondensatkuehlzonen. The object is to guide the over the tube bottom collecting or discharged there condensate in the region of the tubes of the first waterway by suitable baffles so as to be able to use the existing on the water inlet side low inlet temperature for the condensate cooling zone. This is achieved by the fact that on the side of the warm waterway at least to the height of the condensate level extending separating plate is disposed on the tube sheet and that in the inner shell on the side of the cold waterway to dissipate the condensate after Umstroemen the tubes thereof a Kondensataustrittsoeffnung is provided from which the condensate exits via a preferably arranged in the condensate collecting space to prevent Dampfleckstroemungen hydraulic closure.

Description

Title of the invention

Standing heat exchanger for condensing media with multiple waterways

Field of application of the invention

The invention relates to a stationary heat exchanger for condensing media with a plurality of waterways and with bottom inlet and outlet of the medium to be heated and a shell surrounding the inner shell with a on the side of the warm water path extending over the entire height of the condensation zone steam inlet cutout.

Characteristic of the known technical solutions Among the constructions of stationary heat exchangers for condensing media, some are known, around the tube bundle of which an inner sheath with a steam inlet cutout extending over the entire tube bundle length is laid. For thermodynamic reasons, this cut-out for the steam inlet is always on the side of the second waterway in the case of bifurcated or on the side of the last waterway with more than two-way heat exchangers.

It is also used as an outlet for the resulting condensate, which thus flows through the "warm" water path, ie, the second in the case of bifurcated, as the last before exiting the area of the raised floor due to the effect of heat exchangers with condensing media low Grädigkeit (temperature difference between the boiling temperature of the condensing medium and outlet temperature of the medium to be heated) it comes only to a very low condensate cooling or even reheating the "cold" first water condensed and cooled medium to the eighth of the outlet temperature of the medium to be heated ·

Object of the invention

The object of the invention is to allow condensate subcooling in heat exchangers for condensing media without costly design of condensate cooling zones.

Explanation of the essence of the invention

The invention has for its object to guide by suitable baffles over the tube bottom collecting or thrown away there condensate in the region of the Eohre of the first waterway, so as to be able to use the existing on the water inlet low inlet temperature for condensate cooling · According to the invention the object is achieved in that on the side of the warm waterway at least up to the height of the condensate level extending separating plate is arranged on the floor and that in the inner shell on de £ side of the cold water path a condensate discharge opening is provided, from which the condensate via an im Condensate collecting chamber arranged to prevent steam leakage flows arranged hydraulic shutter.

embodiment

The invention will be explained in more detail below with reference to an exemplary embodiment.

The drawing shows a two-way heat exchanger with the Zondensatunterkühlung invention.

The water vapor entering the tube bundle condenses in the condensation zone 1, is collected in the condensate cooling zone 2, which is bounded by the inner jacket 3 and a vertical separating plate extending over the region of the condensate level, above the tube plate 5, occurs on the side of the cold "First waterway via a Kon-, densataustrittsoffnung 6 and a hydraulic shutter in the Kondensatsammeiraum 8 and is guided over this to the condensate outlet port 9. The condensate releases a portion of sedner heat via the pipes of the first water path to the feed water and is undercooled. This solution according to the invention is also possible with heat exchangers with inner jacket in the case of more than two water paths.

Claims (1)

', Cy OO' oO '- - 4 Experience Standing heat exchanger for condensing media, generally water vapor, with multiple waterways and with bottom inlet and outlet of the medium to be heated, generally feedwater, and a tube bundle enclosing Innenmantei with a on the side of the warm water path extending over the entire height of the condensation zone A steam inlet cut-out, characterized in that a separating plate (4) extending at least to the level of the condensate level is arranged on the tube plate (5) to prevent the condensate from flowing away on the side of the warm water path and that in the inner casing (3) on the side the cold water path for discharging the condensate after flowing around the tubes of the same a KondensataustrittsOffnung (6) is provided, from which the condensate via a in Kondensatsammeiraum (8) for preventing Dampfleckströmung s preferably arranged hydraulic shutter (7) exits. For this 1 sheet drawing