RU2204024C2 - Heat electric power plant - Google Patents

Abstract

FIELD: heat power engineering. SUBSTANCE: invention can be used in heat power plants. Proposed power plant has at least one steam turbine, feed water deaerator to which feed water pipeline is connected, system pipeline with fitted in system heaters, make-up water vacuum deaerator with source water pipeline, heating agent pipeline and make-up water pipeline, the latter being connected to system pipeline. Heater is connected to pipeline of heating agent of vacuum deaerator. Said heater is connected to feed pipeline after feed water deaerator by means of heating medium pipe. EFFECT: improved reliability and economy of heat electric power plant. 2 cl, 1 dwg

Description

 The invention relates to the field of power engineering and can be used at thermal power plants.

 Thermal power plants are known - analogues containing at least one steam turbine, feed water deaerator, to which a feed water pipe is connected, a network pipe with mains heaters included in it, a vacuum make-up water deaerator with feed water pipes, a heating agent and make-up water. The make-up water pipeline is connected to the return network pipeline, and the heating agent pipeline is connected to the supply network pipeline (E. Sokolov. Heating and heating networks. - M.: Energoizdat, 1982. Fig. 3.1. (B)). This analogue is adopted as a prototype.

 The disadvantage of the prototype and analogues is the reduced quality of water deaeration due to the lack of stability of the temperature regime of vacuum deaeration. In the warm season, the temperature of direct network water is insufficient to use this water as a heating agent for a vacuum deaerator.

 The technical result achieved by the present invention is to improve the quality of deaeration of water by providing technologically necessary heating of the heating agent of the vacuum deaerator.

 The specified technical result is achieved by the fact that the known device comprises at least one steam turbine, a feed water deaerator, to which a feed water pipe is connected, a network pipe with mains heaters included in it, a vacuum make-up water deaerator with feed water pipes, a heating agent and make-up pipes water, the last of which is connected to the network pipeline.

 The peculiarity lies in the fact that a heater is connected to the pipeline of the heating agent of the vacuum deaerator, connected via a heating medium to the feed pipe after the feed water deaerator.

 Turning on the heating agent of the heating agent of the vacuum deaerator through the heating medium to the feed pipe after the deaerator of the feed water improves the quality of deaeration of makeup water of heating systems at any makeup water flow.

 The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources, and the identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed to identify the set of essential distinguishing features in relation to the technical result in the claimed device set forth in the claims.

 Therefore, the claimed invention meets the condition of "novelty."

 Next, we consider the information confirming the possibility of carrying out the invention with obtaining the desired technical result.

 The drawing shows a diagram of a thermal power plant. The station contains at least one steam turbine 1, feed water deaerator 2, to which feed water pipe 3 is connected, a network pipe 4 with network heaters 5 included in it, a vacuum makeup water deaerator 6 with feed water pipelines 7, a heating agent 8, and a makeup water 9, the last of which is connected to the network pipeline 4. In the pipeline of the heating agent of the vacuum deaerator, a heater 10 is connected, which is connected through the heating medium to the feed pipe 3 after the deaerator water 2.

 The station is as follows. Steam from the boiler passes through turbine 1 and condenses in the turbine condenser. The main condensate of the turbine is heated in regenerative low-pressure heaters by steam of regenerative taps of turbine 1 and fed to feed water deaerator 2. After deaerator 2, feed water is heated by steam of regenerative taps in high-pressure heaters and fed to the boiler. The source water is softened in the chemical water treatment unit and fed to the vacuum deaerator 6. The heating agent of the vacuum deaerator is heated in the water-water heater 10 with the feed water taken after the feed water deaerator 2. From the deaerator 6, the deaerated make-up water is supplied through pipeline 9 to the network 4 where it mixes with return network water returning from consumers. The network water is heated in the network heaters 5 and is supplied to the consumers by the network pump.

 Thus, the above information indicates the industrial applicability of the invention.

Claims (1)

 A thermal power station containing at least one steam turbine, a feed water deaerator to which a feed water pipe is connected, a network pipe with mains heaters included in it, a vacuum makeup water deaerator with feed water pipes, a heating agent and make-up water, the latter of which is connected to a network pipeline, characterized in that a heater is connected to the pipeline of the heating agent of the vacuum deaerator, connected via a heating medium to the feed pipe the wire after the deaerator feedwater.