Combined thermal power plant based on a stirling engine

 

(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 efficiency and reducing overall size of the installation. During operation of the engine 1 produces useful energy consumed by the consumer power of 3. The exhaust gases through line 2 is transmitted through the superheater 15 in the steam generator 14, which produce steam. From the superheater 16 steam enters the steam-water pump-heater 5, which receives warm water from the cooling circuit 4 after removing the heat load from the engine 1. From the steam-water pump-heater 5 hot water with high temperature and pressure enters the heat exchanger-cooler 6 where it is cooled by heat exchange with a coolant system of an external heat supply 7. For filling of the steam generator 14 warm water of the cooling circuit 4 is connected to the steam generator 14 plumage is relates to the field of thermal engineering and energy converters, direct cycle (for example, of 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 (cogeneration).

A device cogeneration plants designed for the simultaneous production of electricity and heat, comprising an internal combustion engine with a generator on the same shaft, a supply of fuel, the cooling circuit of the engine, the heating circuit (heating system with heat consumers), a system of heat exchangers which transfer heat engine coolant and high temperature exhaust gas in the heating circuit, and a control Board ("Construction review"//Journal of quality//, SPb. N 5 (32), may-June 1999, pp. 16-17). However, this device does not involve the production of steam and use it to reduce electricity consumption for own needs.

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, the display is of condensate, with subsequent supply of heated condensate in deaerator and next to the boiler-steam generator (RF patent N 2115831. Bull. N 20 from 20.07.98 year).

A device steam-water pump-heater (EOR) intended for use in various industrial technologies using steam, combining the functions of a 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 cogenerating settings were not applied.

Known combo unit with the electric and Stirling engine located on the same shaft, and a cooling system consisting of a closed loop with a heat exchanger through which the highway exhaust gas of the Stirling engine and heat exchanger-cooler, which passes through the external heat supply (application EPO N 0457399. Abstract journal "the Invention of the world", the release of B-65, No. 5, 1993, page 13). However, this unit will not receive the steam and its use reduced the invention, is to increase efficiency by reducing energy consumption for own needs, reducing the overall size of the installation.

To achieve this, the technical result of the combined thermal power plant based on a Stirling engine, comprising an engine (for example, a Stirling engine or internal combustion engine) and an electric generator located on the same shaft, the cooling system comprising a closed loop with a heat exchanger-cooler, which passes through the external heat supply, the main line of exhaust gases of the engine, equipped with a production line pair consisting of a steam generator, superheater, with a check valve between them, through which the highway exhaust gases of the engine, and the cooling circuit of the engine, connected to the steam generator jumper with regulators, check valves, includes water pump-heater, start-up bypass line from the pump and shut-off valves in this line steam generation connected to the engine cooling system through the steam-water pump-heater, and highway exhaust gas first passes through paroperegrevatelja Stirling engine line steam generation by the steam generator, a superheater connected by a jumper from the cooling circuit of the engine, which contains the steam-water pump-heater, start-up bypass line from the pump and shutoff valve, and line production of steam associated with the engine cooling system through the steam-water pump-heater, allows to obtain a new property, i.e. the integrated use of the residual heat of the waste gases of the engine and the heat of the cooling circuit of the engine for heating the external consumers of heat and steam generation to replace the pumps and heat exchangers.

The drawing shows a combined thermal power plant based on a Stirling engine.

Thermal power plant includes a Stirling engine 1 with highway exhaust gas 2 and the generator 3 are located on the same shaft with the engine 1, the cooling circuit 4 of the engine 1, which includes the steam-water pump-heater 5 and the heat exchanger-cooler 6, associated with the system of external heat supply 7, the start-up bypass line 8 with shut-off valves 9, 10, 11 and pump 12. The unit also includes the production line pair 13, which includes a steam generator avadana pump-heater 5. Between the cooling circuit 4 and the steam generator 14 is installed jumper with 17 regulating valve 18 and the check valve 19. Highway exhaust gas 2 first passes through the superheater 15, then through the steam generator 14.

Combined thermal power plant based on a Stirling engine works as follows.

During operation of the engine 1 produces useful energy that is converted into electrical energy in the generator 3, located on the same shaft with the engine 1. The exhaust gases of the engine 1 through line 2 are in the superheater 15, and then in the steam generator 14, where by heat exchange with them evaporates water to form a pair. Steam from the steam generator 14 through line steam generation 13 flows through the check valve 16 in the superheater 15, where it is superheated with increasing pressure, and then flows into the steam-water pump-heater 5. Simultaneously with the steam in the steam-water pump-heater 5 is supplied with warm water from the cooling circuit 4 after removing the heat load from the engine 1. In the steam and water pump-heater 5 due to the special design and the effect of mixing the two-phase vapor-liquid environments with intense stirring prodaja hot water in the heat exchanger-cooler 6, where it is cooled by heat exchange with a coolant system of an external heat supply 7. After cooling, water under pressure is fed again into the engine 1 for removing the heat load. For filling of the steam generator 14 warm water of the cooling circuit 4 is connected to the steam generator 14 jumper with 17 regulating valve 18 and the check valve 19. To start the installation, when there is no steam, the cooling circuit 4 is supplied starting in the bypass line 8 with the pump 12, while at the time of the start of the shutoff valve 10 and 11 are open, and valve 9 is closed. With the ramp-up valves 10 and 11 are closed and the valve 9 is opened.

Sources of information taken into account

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

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

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

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

Combined thermal power plant based on a Stirling engine, comprising an engine (for example, a Stirling engine or internal combustion engine) and an electric generator located on the same shaft, t system of external heat, highway exhaust gases of the engine, characterized in that it is equipped with a production line pair consisting of a steam generator, superheater with a check valve between them, through which the highway exhaust gases of the engine, and the cooling circuit of the engine, connected to the steam generator jumper with regulators, check valves, includes water pump-heater, start-up bypass line from the pump and shut-off valves in this line steam generation connected to the engine cooling system through the steam-water pump-heater, and highway exhaust gas first passes through the superheater, and then through the steam generator.

 

Same patents:

The invention relates to the field of cryogenic engineering and air conditioning, can be used as a setup for the regeneration air in an airtight room special fortifications, submarines, space stations, etc

The invention relates to the field of cryogenic engineering and air conditioning, can be used as a setup for the regeneration air in an airtight room special fortifications, submarines, space stations, etc

The invention relates to cryogenic equipment, cryogenic gas refrigerating machines operating on the reverse Stirling cycle, as well as receiving and storage of liquefied natural gas

The invention relates to cryogenic equipment, obtaining liquefied natural gas

The invention relates to cryogenics and cryogenic refrigerating machines operating on the reverse Stirling cycle, can be used for temperature control of various objects and long-term storage of food and other materials

The invention relates to the field of cryogenic engineering and cryogenic refrigeration machines running on reverse Stirling cycle, and can be used for temperature control of various objects and long-term food storage

The invention relates to cryogenics and cryogenic refrigerating machines operating on the reverse Stirling cycle

The invention relates to cryogenics and cryogenic refrigerating machines operating on the reverse Stirling cycle, can be used for temperature control special stationary objects, and also for vehicles

The invention relates to the field of cryogenic engineering, cryogenic gas refrigerating machines operating on the Stirling cycle, as well as to the field of production and storage of liquefied gases, such as natural gas

The invention relates to cryogenic equipment, cryogenic gas refrigerating machines with helium working on reverse Stirling cycle, and storage of liquefied gases, such as natural gas

The invention relates to a power system, relates to power converters direct cycle (for example, internal combustion engines, Stirling engines) and is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat

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

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

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

The invention relates to the field of heat and Stirling engines, is designed as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat

The invention relates to thermoenergetics machine for receiving mechanical power from solar energy

The invention relates to mechanical engineering, in particular to the field of thermal machines externally heated working on thermodynamic Stirling cycle, i.e. in the ideal case: isotherm-isochore-isotherm-isochore

The invention relates to the field of power engineering and regenerative gas machines running on forward and reverse cycles of Stirling, is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat

The invention relates to the field of power engineering and regenerative gas machines running on forward and reverse cycles Stirling intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat

The invention relates to engine, namely to the heat engine with external heat supply, and can be used in the automotive industry, as well as propulsion devices for marine and river transport

FIELD: heat power engineering.

SUBSTANCE: invention can be used as power plant for special application, for instance, for special fortifications, submerged objects and mobile complexes. Heat accumulator is charged by energy supplied from heat source through closed gas circuit. Circulation of gas heat carrier, for instance, helium, in closed circuit is provided by compressor. Heat from heat accumulating substance is conveyed through walls of accumulator to walls of heater of Stirling engine, leading to gradual temperature rise and pressure rise in working circuit of engine and starting of engine. With engine operating, mechanical energy is converted into electric energy by electric generator. Cooler is used for cooling Stirling engine by cooling medium circulating through cooler.

EFFECT: improved reliability of power plant with Stirling engine, reduced cost of plant.

1 dwg

Up!