Offline steam cogeneration power plant

 

(57) Abstract:

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. Technical result achieved - increase the efficiency of the installation as a whole 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 4, which is located on the same shaft with the engine 1. For cooling the engine 1 to the cooling jacket 3 is fed water from the external heat consumers 8 through the return line 9. The heated coolant from the cooling jacket 3 comes partly in the steam generator 5, through which passes the line of exhaust gases 2. High-pressure steam from the steam generator 5 is fed into the steam-water pump-heater 6, is mixed with water from line 15, form water with high temperature and pressure. Due to the pressure of supplied hot water through line 10 to the external heat consumers 8 highways provided by the check valve 17 and a pressure regulating valve 13, 16, 20. 1 Il.

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.

It is known that for quick start-up and stable operation of diesel engines, the cooling water temperature must be at least 50 degrees Celsius ("Science and life"//).popular. log//, M, Ed. Pravda, No. 4, 1984, page 56).

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 gases of the Stirling engine, while the heated fluid is conveyed to the external line (Application EPO N 9457399. Abstract journal "the Invention of the world", issue 65, No. 5, 1993, page 13). However, this setting is a complex system of joint cooling of the engine and generator.

A device power plant comprising an internal combustion engine (ice) with the shaft of the consumer power through the coupling, and tensator, feed pump, steam generator, placed in the line of production of high temperature exhaust gases of the engine. (Author's 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.

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 cogeneration plants has not been applied.

A device cogeneration plants designed for the simultaneous production of electricity and heat, which includes 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), the heat exchanger system, ensure the nutrient loop, and a control Board ("Construction review" //Journal of quality//, SPb., N 5 (32), may-June 1999, pp. 16-17). However, because the cooling circuit of the engine and the heating circuit provided in the form of independent closed loop, it is necessary to enter in the installation of additional equipment for their relationship, and an additional circulation pump.

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

To achieve this technical result offline steam cogeneration power plant, which includes the inverter direct cycle (for example, internal combustion engine or a Stirling engine with 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, a system of external heat consumer heat with heat exchanger-heat exchanger high temperature exhaust gases of the engine, made in the form of the developed gases of the engine, and also, a closed system of highways that provide heat transfer from the engine to the heat consumers and consisting of a backbone of high-pressure steam coming from the steam generator to the steam-water pump-heater, mains hot water coming from the steam-water pump-heater to heat consumers, highways return chilled water coming from the heat consumers and divides into the line that goes to the cooling jacket of the engine valve and the pump, and the line that goes to the steam-water pump-heater valve, check valve and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, highway drain engine cooling water coming from the cooling jacket of the engine and connected with a line leading to the steam-water pump-heater, after the check valve on it, and the highway drain engine cooling water has a jumper valve, connecting the highway with steam, and the line of exhaust gases of the engine first passes through the steam generator, and then through the heat exchanger-heat exchanger low-temperature exhaust gases.

Introduction to Autonomous paroh the gases of the engine, made in the form of steam generator, steam and water pump-heater and heat-exchanger low-temperature exhaust gases of the engine, and a closed system of arteries with regulating valves, providing heat transfer from the engine to the heat consumers, allows to obtain a new property, consisting in the possibility of merging loop engine cooling and heating circuit in a single closed system that ensures the integrated use of the residual heat of the waste gases of the engine and the heat of the engine cooling system for a heat supply of external heat consumers, and produce high-pressure steam for the purpose of its further use to replace a network of pumps and heat exchangers.

The drawing shows offline steam cogeneration plant.

Autonomous cogeneration electrical system includes Converter direct cycle (for example, internal combustion engine) 1 line of exhaust gases 2 and the cooling jacket 3, the generator 4, located on the same shaft with the engine 1, the heat exchanger-the heat exchanger high temperature exhaust gases, vypolneniyasvoey gases 7, consumers heat 8, and a closed system of arteries, consisting of a backbone of high-pressure steam 9 coming from the steam generator 5 to the steam-water pump-heater 6, mains hot water 10 leading from the steam-water pump-heater 6 to heat consumers 8, line return chilled water 11 coming from the heat consumers 8 and divides the line 12 leading to the cooling jacket 3 of the engine 1 with a control valve 13 and to increase the pressure pump 14, and line 15 leading to the steam-water pump-heater 6 with regulating valve 16, exhaust valve 17 and heat exchanger-a heat exchanger low-temperature processed gases 7, line drain engine cooling water 18 coming from the cooling jacket 3 and the connecting line 15, with highway drainage water cooling the motor 18 has a crosspiece 19 of the valve 20, the connecting line 18 to the steam generator 5 and highway exhaust gases 2 of the engine 1 passes successively first through the steam generator 5, and then through the heat exchanger-heat exchanger low-temperature exhaust gases 7.

Offline steam cogeneration plant operates as follows.

When the positioning on the same shaft with the engine 1. For cooling the engine 1 to the cooling jacket 3 is fed by a pump 14 water from external heat consumers 8 through line 11 and line 12 to a temperature of about 50-70 degrees Celsius. After the engine 1, the heated coolant from the cooling jacket 3 through line 18 enters partially into the steam generator 5 through the jumper 19 for the production of high pressure steam by heat exchange with high-temperature exhaust gases coming from the engine 1 through line 2, and partly in line 15 line 11 where it is mixed with cooled water coming from the heat consumers 8, after it heats up. Then this water line 15 enters the heat exchanger-heat exchanger low-temperature exhaust gas 7, where the water is additionally heated by the residual heat of low-temperature gases coming from the steam generator 5. From the heat-exchanger 7 water enters the steam-water pump-heater 6, in which the setting of the steam generator 5 through line 9 goes high-pressure steam. In the steam and water pump-heater 6 due to the special design and the effect of mixing the two-phase vapor-liquid media pressure, intensive mixing of the steam and water with posleduuschei hot water through line 10 to the external heat consumers 8 and further circulation of water in the mains 11, 12, 15. To control the direction and flow of water on various highways provided by the check valve 17 and the regulating valve 13, 16, 20.

Sources of information

1. "Science and life"//).popular. log//, M., Publishing house "Pravda", No. 4, 1984, page 56.

2. The application of EPO N 0457399. Abstract journal "the Invention of the world", issue 65, No. 5, 1993, page 13.

3. Author's certificate. N 1677360. Bulletin of inventions No. 34 from 15.04.91, p. 141-142.

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

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

Offline steam cogeneration power plant, which includes the inverter direct cycle (for example, internal combustion engine or a Stirling engine with 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, a system of external heat consumer heat, characterized in that provided with a heat exchanger-heat exchanger high temperature exhaust gases of the engine, made in the form of steam generator, steam is El, as well as a closed system of highways that provide heat transfer from the engine to the heat consumers and consisting of a backbone of high-pressure steam coming from the steam generator to the steam-water pump-heater, mains hot water coming from the steam-water pump-heater to heat consumers, highways return chilled water coming from the heat consumers and divides into the line that goes to the cooling jacket of the engine valve and the pump, and the line that goes to the steam-water pump-heater valve, check valve and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, highway drain engine cooling water, coming from the cooling jacket of the engine and connected with a line leading to the steam-water pump-heater, after the check valve on it, and the highway drain engine cooling water has a jumper valve, connecting the highway with steam, and the line of exhaust gases of the engine first passes through the steam generator, and then through the heat exchanger-heat exchanger low-temperature exhaust gases.

 

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