Heat and power installation

 

(57) Abstract:

The invention relates to the field of power engineering and energy converters, direct cycle (e.g., Stirling engines or internal combustion engines), is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat. Technical result achieved - increasing the efficiency and reducing the overall size of the installation. During operation of the engine 1 produces useful energy that is converted into electrical energy by a generator 3, which is on the same shaft with the engine 1. For cooling the engine 1 includes a cooling circuit 20, which is connected through the heat exchanger 14 with external heat supply. Water from the return line 13 is partially supplied to the steam generator 4, through which passes the line of exhaust gases 23, and partially in the steam-water pump-heater 8. High-pressure steam from the steam generator 4 first enters the heat exchanger-steam heater 5, is then expanded in a steam turbine 6 to produce electricity in the generator 7 and is fed into the steam-water pump-heater 8, is mixed in with the t hot water through line 12 to an external heat consumers 10 and further circulation of water in the highways 13, 15, 18. To control the direction and flow of water on highways is provided by control valves 16, 19 and the check valve 17. 1 Il.

The invention relates to the field of power engineering and energy converters, direct cycle (e.g., Stirling engines or internal combustion engines), is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat.

Known combination unit on the basis of the Stirling engine with generator on the same shaft, lines, fuel supply and heat exchanger for heating a liquid, through which the high temperature exhaust gases of the Stirling engine, while the heated fluid is conveyed to the external line (application EPO N 0457399. Abstract journal "the Invention of the world", the release of B-65, No. 5, 1993, page 13). However, this installation will not receive pair.

A device power plant comprising an internal combustion engine (ice) with the shaft of the consumer power through the coupling and the utilization of steam turbine installation with circuit of the working fluid including steam turbine, kondh gas engine (Copyright certificate. N 1677360, Bulletin of inventions No. 34 from 15.4.91, p. 141 - 142). However, this device is not intended for production of thermal energy for heating external customers.

There is a method of regenerative feedwater heating in jet heater, which includes the supply of steam to the turbine generator, steam extraction from the turbine, the exhaust into the condenser, the flow of condensate from the condenser and steam taken from the turbine, jet apparatus with the condensation of steam in the jet device and the heating due to this condensation, with subsequent supply of heated condensate in deaerator and next to the boiler-steam generator (RF Patent N 2115831, bull. N 20 to 20.07.98 year).

A device steam-water pump-heater (EOR) intended for use in various industrial technologies using steam, which combines in itself the functions of the heater and pump at the same time. The application of EOR can significantly reduce the power consumption for own needs and to reduce the weight and size characteristics of heat exchangers. ("Energy Petersburg/newspaper/, N 5, (11), from 25.05.99 year). However, previously the steam-water pump-heater in cogeneration plants were not used.

The technical result, which can be obtained by carrying out the invention, is to improve efficiency by reducing energy consumption for own needs and reducing the overall size of the installation.

To achieve this, the technical result of heat and power installation, comprising a Converter direct cycle (for example, the Stirling engine or the internal combustion engine with a generator on the same shaft, line, fuel line, heat exchanger-the heat exchanger high temperature exhaust gases of the engine, through to bennik system with external heat supply, provided with a heat exchanger-heat exchanger high temperature exhaust gases of the engine, made in the form of a steam generator, and a closed system of highways that provide heat transfer from the engine to the consumers of heat and electricity production, consisting of a backbone of high-pressure steam coming from the steam generator through the heat exchanger-steam heater and a steam turbine with a generator on the same shaft, to the steam-water pump-heater, mains hot water coming from the steam-water pump-heater to heat consumers, highways return chilled water heat exchanger, running from the heat consumers and divides into line with the regulatory and non-return valves, going into the steam generator, and a line with a control valve and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, going to steam-water pump-heater, while the backbone of the return chilled water is connected with the cooling circuit of the engine through the heat exchanger, and the line of exhaust gases of the engine first passes through the heat exchanger-steam heater, steam generator, and then through the heat exchanger-heat exchanger low-temperature exhaust gases.

The drawing shows a heat setting.

Heat and power installation includes Converter direct cycle (engine) 1, line exhaust gas 2, the generator 3, located on the same shaft with the engine 1, the heat exchanger-the heat exchanger high temperature exhaust gas is made in the form of a steam generator 4, the heat exchanger-steam heater 5, the steam is otemperature exhaust gases 9, heat consumers 10, and a closed system of arteries, consisting of a backbone of high-pressure steam 11 coming from the steam generator 4 through the heat exchanger-steam heater 5, a steam turbine 6 to the steam-water pump-heater 8, mains hot water 12 leading from the steam-water pump-heater 8 to heat consumers 10, line return chilled water 13 to heat exchanger 14, running from the heat consumers 10 and divides the line 15 with a control valve 16 and the check valve 17, going into the steam generator 4, and the line valve 19 and heat exchanger-a heat exchanger low-temperature exhaust gas 9, which is coming to steam-water pump-heater 8, the cooling circuit 20 of the engine 1 with a pump 21 connected with highway 13 through the heat exchanger 14. Highway exhaust gases 2 of the engine 1 passes successively first through the heat exchanger-steam heater 5, the steam generator 4, and then through the heat exchanger-heat exchanger low-temperature exhaust gases 9.

Thermal power plant works as follows.

During operation of the engine 1 produces useful energy that is converted into electrical energy by a generator 3, rasenia 20. After the engine 1, the heated coolant enters the heat exchanger 14 where it is cooled by heat exchange with return water of the external heating system, going through line 13. Return chilled water through line 13 from the consumers 10, passing through the heat exchanger 14, is divided into line 15 going to the steam generator 4 to produce high-pressure steam by heat exchange with high-temperature exhaust gases coming from the engine 1 through line 2, and line 18, passing through the heat exchanger-the heat exchanger 9, where the water is additionally heated by the residual heat of low-temperature exhaust gases coming from the steam generator 4, in the steam-water pump-heater 8. Simultaneously, the steam generator 4 through line 11 in the steam-water pump-heater 8 goes high-pressure steam. Pre-steam from the steam generator 4 is supplied to the heat exchanger-steam heater 5 where the steam is superheated with increasing pressure, and is then expanded in a steam turbine 6 with power generation in the generator 7. In the steam and water pump-heater 8 due to the structure and the effect of mixing the two-phase vapor-liquid media pressure, intensive mixing is due to this pressure is the flow of hot water through line 12 to an external heat consumers 10 and further circulation of water in the highways 13, 15, 18.

To control the direction and flow of water on highways is provided by control valves 16, 19 and the check valve 17.

Sources of information

1. The application of EPO N 0457399. Abstract journal "the Invention of the world", the release of B-65, No. 5, 1993, page 13.

2. Author's certificate. N 1677360. Bulletin of inventions No. 34 from 15.4.91, p. 141 - 142.

3. RF patent N 2115831. Bull. N 20 from 20.07.98,

4. "Energy Petersburg//newspaper//, N 5 (11), from 25.05.99,

5. "Construction review"//Journal of quality//, SPb., N 5 (32), may-June 1999, pages 16 - 17 prototype.

Heat and power installation, comprising a Converter direct cycle (for example, the Stirling engine or the internal combustion engine with a generator on the same shaft, line, fuel line, heat exchanger-the heat exchanger high temperature exhaust gases of the engine through which the highway passes the exhaust gases of the engine, the cooling circuit of the engine, which is connected through a heat exchanger system with external heat supply, characterized in that provided with a heat exchanger-heat exchanger high temperature exhaust gases of the engine, made in the form of a steam generator, and a closed system magma of the line high-pressure steam, coming from the steam generator through the heat exchanger-steam heater and a steam turbine with a generator on the same shaft to steam-water pump-heater, mains hot water coming from the steam-water pump-heater to heat consumers, highways return chilled water heat exchanger, running from the heat consumers and divides into line with the regulatory and non-return valves going into the steam generator, and a line with a control valve and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, going to steam-water pump-heater, while the backbone of the return chilled water is connected with the cooling circuit of the engine through the heat exchanger, and highway exhaust gases of the engine first passes through the heat exchanger-steam heater, steam generator, and then through the heat exchanger-heat exchanger low-temperature exhaust gases.

 

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