Geothermal energy

 

(57) Abstract:

The invention relates to geothermal energy devices for cold climatic zones. The invention improves the reliability of the complex. In geothermal energy water volumes of condensate and tank circulating water cooling system is connected to the surge line, and the piping downstream of the circulation pump is connected to the piping of the heating system. The piping of the heating system are connected by a line with a shut-off valve with tank water recycling systems. 1 C.p. f-crystals., 1 Il.

The invention relates to the field of power engineering, in particular, to geothermal power plants for cold climates.

Known geothermal power plant comprising a steam turbine operating on geothermal pair of condenser water cooling system and elements of thermal system, where the water used to remove heat from equipment (cooler, cooler alternator, etc) (see R. D. Pino "electricity generation based on the conversion of geothermal energy". M., Henin, GUIs, MLA, 1988).

The disadvantage of this setup is the growth of t the high temperature and as a consequence, the need to reduce capacity or output from a geothermal power plant.

Known geothermal energy complexes, consisting of a steam turbine operating on geothermal pair of condenser with condensate, pump and level control of condensate and cooling water regulator recharge to ensure the functioning elements of thermal circuit (oil cooler, cooler generator and so on), in addition, in cold climates, these complexes are composed of a heating system with their regulator recharge (Progekto Geotermiko son-jacintoti zate, Dal Spa, Milan, Marzo de 1993).

The disadvantages of these systems is the reduced reliability due to the large number of automatic regulators, the failure of which led to the shutdown of the unit or to the loss of heating. In addition, the system circulating cooling water, designed for high outdoor air temperature in summer and low temperatures in winter gives such a low temperature of cooling water, which is unacceptable under the operating conditions of the generator and cooler.

The closest to this decision is geothermal energy is s (see Caldesi Y. and Lesná, Y. "the World is looking for energy". Mir, M., 1981, S. 198, p. 85.)

The disadvantage of this complex is low-maintenance reliability.

The task of the invention is to enhance reliability of the complex.

The task is solved by the fact that geothermal energy comprises a steam turbine generator, condenser tube barometric drain, drain pump condensate, the condensate, the level control in the condensate, circulating water system with tank, piping, chiller water-cooled elements of thermal circuit and the circulation pump, the complex also contains a heating system with pipelines, pump network water network water heater and teplopoteryami, while the condensate tank and circulating water cooling system is connected to the surge line, and the piping downstream of the circulation pump is connected to the piping of the heating system. The piping of the heating system are connected by a line with a shut-off valve with tank water recycling systems.

The essence of the invention lies in the fact that the established line of hydraulic connection between all the systems so that the system is working, vodone the only regulator of the level in the condensate.

When outdoor temperature is low, the temperature rise of water in the circulating water system is provided by feeding it with hot water from the heating system.

As a result of implementation of these essential features of geothermal energy complex acquires a new property: improved reliability, independence of his work from regulators recharge heating system and water recycling.

Scheme geothermal energy complex is shown in the drawing. It contains a steam turbine 1, a generator 2, a condenser 3 steam pipe barometric drain and water cooling system, the condensate 4, the pump 5 condensate pumping, the controller 6 level in the condensate 4, the circulating water system with tank 7, the circulation pump 8, the piping 9, the cooler 10 water cooled elements 11 thermal circuit (the cooler, the cooler generator and so on), equalization line 12, and the heating system with pump 13 network of water pipelines 14, a heater 15 network water and teplopoteryami 16. The condensate tank 4 and 7 water recycling systems are connected equalization line 12, and the pipe 9 when the circulation pump 8 is connected with TRU connected by a line 18 with shutoff valves to the tank 7 water recycling systems.

The complex operates as follows.

Heating system water pump 13 network water pipeline 14 is pumped through the heater 15 water network, teplopoteryami 16 and returns to the pump 13. Any water leaks in the heating system are compensated for by the circulating water cooling system on the inflow pipe 17. From the tank 7 water recycling systems with circulation pump 8 water piping 9 enters the water cooler 10, then cooled elements 11 thermal circuit and drains back into the tank 7, the excess (or deficiency) in which the water is compensated flow along egalitarian lines 12 into the condensate 4 (or of the condensate 4).

The spent geothermal steam from the turbine 1, actuated by the generator 2 is supplied to the capacitor 3 with barometric drain pipe, condenses and the pipe barometric drain merges into the condensate 4, from which the excess condensate is removed by the pump 5 condensate pumping, the flow rate of the pump 5 is determined by the position regulator 6 level in the condensate 4.

At low ambient temperatures, when the temperature of the water in the circulating water system reaches the minimum allowable C the heating in the water recycling system, which leads to the increase of the temperature level in it, the lack of a network of water in the heating system is compensated by the inflow pipe 17.

Because geothermal plants always have excess condensate, all parts of the schema reliable access to water.

Through the use of the above circuit-design solutions are improving the reliability of geothermal complex with a minimal number of automatic controllers.

1. Geothermal power complex containing steam turbine generator, condenser tube barometric drain, a condensate pump condensate pumping and level control in the condensate, circulating water system with tank, piping, chiller water-cooled elements of thermal circuit and the circulation pump, heating system pipelines, pump network water network water heater and teplopoteryami, characterized in that the condensate tank and circulating water cooling system is connected to the surge line, and the piping downstream of the circulation pump is connected to the piping of the heating system.

2. Geothermal energy under item 1, distinguished by the th water.

 

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