SU1212110A1 - Method of operation of heat-supply turbine plant - Google Patents

Description

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The invention relates to the field of heat and power engineering and can be used with power plants operating on turf or organic fuel, carrying out a combined generation of electrical and thermal energy With the delivery of the latter to the heat supply system.

The purpose of the invention is to increase the efficiency and generation of additional power due to the most efficient use of the heat of drainage of boilers.

The drawing shows a diagram of the heat turbogeneration plant that implements the described method.

The heat-recovery turbine unit contains a steam-turbine circuit that includes a turbine, a condenser 2, a condisate pump 3, a block power-generating unit (, a regulator 5, low pressure heaters 6-8) and a heat-generating circuit that turns on a network pump 9 , boilers 10 and 11 are connected a couple of parallel PND 7 and 8, respectively.

The turbine unit also contains a boiler 12 drainage cooler 12 (ODB) pipelines 13-15, temperature sensors 16 and 17 associated with the logic unit 18, and task 19 and. Regulator 20,

The method is implemented as follows.

Steam from turbine 1 enters condenser 2f and its condensate is pumped

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3 is pumped through 60U 4 and through controller 5 enters the PND b of the regeneration system, and from there to PND 7 and further into the PND 8. The network water of the heat supply system is pumped through pump 9 through boilers 10 and 11 connected in parallel with the PND 7 and PND 8 respectively. Drainage (condensate of heating steam) from boiler 1I is drained into boiler 10, from where together with condensate of heating steam of this boiler 10 is fed to EFA 12. To cool the drainage of boilers, ODB 12 also supplies part of the main condensate which, after heating, is supplied to ODB. 12 through pipelines 13 and 14 enters pipeline 15 of the main condensate after HDPE 7. Logical block 18 according to the program embedded in it, taking into account the setpoint of sensor 19, gives a signal to change the position of regulator 20 installed on pipeline 13. The cooling flow is regulated through the ODB 12, and its temperature in the pipeline 15, measured by the sensor 17, is brought to a value different from the temperature in the pipeline 15, measured by the sensor 16, to: a predetermined value set by the sensor 19. With the growth thermal load ODB condensate flow 12 is increased with a decrease - schaets reduced. Circassian condensate flow HBS 12 also varies depending on the electrical load f.

Claims (1)

METHOD FOR OPERATING A HEAT TURBO TURBO INSTALLATION, including supplying hot steam to a turbine, heating main condensate and network water, respectively, in regenerative heaters and at least one boiler with selected steam of the corresponding selection, cooling the drainage of the boilers in the cooler with main condensate, desalting the dampened main drain and cooling it condensate in regenerative heaters, characterized in that, in order to increase efficiency and generate additional power, drainage the boilers are cooled with part of the main condensate! whose flow rate through the cooler is controlled by its temperature at the outlet of the latter and mixed with the remaining part of the main condensate heated in regenerative heaters ..