Heating network make-up unit (embodiments)

Abstract

FIELD: thermal power engineering.SUBSTANCE: group of inventions can be used at thermal power plants (TPPs) and in boiler houses in systems for preparing make-up water for heating networks. The heating network make-up unit according to the first embodiment comprises a chemical water purification system (2) with a chemically purified water pipeline (3), a first-lift network pump (18), network heaters (11) and (14) with steam pipelines of heating extractions (12), (15) and condensate pipelines (13), (16), as well as a vacuum deaerator (5) with a pipeline for extraction of heating direct network water (6), a make-up pump (8) and a make-up water pipeline (7). An additional heater (4) is introduced into the system, which, with its first input and first output, is included in the section of the chemically purified water pipeline (3). The first output of the additional heater (4) is connected to the first input of the vacuum deaerator (5). The make-up water pipeline (7) is connected through an additional heater (4) along the heating medium line to the pipeline for taking off to the storage tanks (9) and to the return network water pipeline (10). The heating network make-up unit according to the second embodiment differs in that instead of a vacuum deaerator it comprises an atmospheric deaerator (22), the second input of which is connected to the steam pipeline from the general station main line (21), whereas the first output of the atmospheric deaerator (22) is connected to the make-up pump (8).EFFECT: increasing the efficiency of the operation of the heating network make-up unit and reducing the consumption of high-potential heating agent (steam or direct network water) due to the preliminary heating of chemically purified water with the utilized heat of the deaerated make-up water flow.2 cl, 2 dwg

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