KR20130134605A - High efficiency multiplex power generating system using reciprocating engine - Google Patents

Abstract

The present invention relates to a high efficiency hybrid power generating system using a reciprocating engine. The purpose of the present invention is to provide the high efficiency hybrid power generating system using a reciprocating engine which improves thermal efficiency and acceleration performance of the engine by reinforcing the excessive generation of smoke caused by incomplete combustion when starting a main engine and auxiliary engines of a vessel and low thermal efficiency; produces electricity by including a gas turbine, a power turbine, and a steam turbine; and uses a reciprocating engine with at least one burner for improving the efficiency when the electricity is produced. The present invention includes the main engine for propelling the vessel; auxiliary engines for producing electricity for the vessel; a turbocharger in which the exhaust gas of the main engine is supplied; a heat exchanger in which the exhaust gas discharged from the turbocharger of the main engine and middle-sized turbochargers of the auxiliary engines is supplied; a gas turbine power generating unit which is connected to the heat exchanger and of which a compressor, in which compressed air heated by the heat exchanger with the exhaust gas supplied to the inside of the heat exchanger is supplied, is connected to the main engine and the auxiliary engines; a boiler in which the exhaust gas discharged from the turbocharger and the middle-sized turbocharger or the exhaust gas heat-exchanged by the heat exchanger is supplied; a first burner which heats the exhaust gas supplied to the boiler; a steam turbine power generating unit which is connected to the boiler and driven by steam generated by the heat exchange with the exhaust gas supplied to the inside the boiler; and a power turbine power generating unit in which some of the exhaust gas supplied from the main engine to the turbocharger is supplied.

Description

High efficiency multiplex power generating system using reciprocating engine

The present invention relates to a high-efficiency hybrid power generation system using a reciprocating engine. More specifically, a cycle in which a diesel engine or a gasoline engine type reciprocating engine is used, and an excessive amount of smoke due to incomplete combustion due to insufficient air at the initial operation of a bogie engine and thermal efficiency of the engine In order to improve the deterioration problem, the compressed air of the gas turbine is supplied during the initial operation of the main engine and the bogie engine to reduce smoke generation, improve thermal efficiency, and improve the engine acceleration performance. The present invention relates to a high efficiency combined cycle power generation system using a reciprocating engine equipped with a burner for producing electricity by using a gas turbine and a gas turbine, a power turbine and a steam turbine to increase the efficiency of electricity production.

In general, a ship equipped with a reciprocating engine has a main engine for propulsion power and about 3-4 bogie engines (diesel engines) installed for the purpose of generating electricity for the ship. During voyage, approximately one bogie engine is operated like a main engine, and two or more bogie engines are operated while the main engine is not in operation during loading and unloading at the port.

During the initial operation of the main engine and the bogie engine, the amount of intake air is low, so the engine generates excessive smoke due to incomplete combustion and thermal efficiency is very low. In the case of the main engine, the auxiliary blower operates, but it does not supply enough air, thereby injecting a lot of fuel, thereby raising the engine load as soon as possible to allow normal combustion. That is, in the engine (cycle and bogie) at the time of initial driving, since a combustion state is inevitably bad, it will always accompany smoke.

In addition, the existing power generation system using waste heat was possible because the surplus of thermal energy occurs only when the engine load is more than 50%.

In addition, the conventional vessel configured as described above has to drive a bogie engine (diesel engine) in order to generate the necessary electricity in the vessel, there is a problem that additional fuel consumption and engine driving force loss occurs.

In particular, the conventional vessel consumes most of the energy required to operate the vessel in the propulsion cycle engine, and 25% of the fuel required for the operation of the cycle engine is disposed of in the atmosphere as waste gas.

Of course, in diesel engines and the like that require high power, such as ships and power plants, an exhaust turbine supercharger (hereinafter referred to as a turbocharger) is employed to improve the engine output. Exhaust gas is also dumped into the atmosphere.

However, with the advent of high oil prices, ships have gradually introduced more efficient ship propulsion efficiency and overall energy saving. In particular, various systems have been actively introduced to recover some of the waste heat using waste gas.

As a method of using the waste gas of the vessel, a system for generating power by driving a steam turbine by performing heat exchange with the exhaust gas discharged from the cycle engine using an economizer is widely used, and thus a system for saving the energy of the vessel. There is an active research on.

Utility Model Registration Registration No. 20-0442067 (2008.09.29) Published Patent Publication No. 10-2010-0022495 (2010.03.02)

An object of the present invention for solving the above problems is to cycle and boil compressed air in a gas turbine which is a power generation system to compensate for excessive smoke generation and low thermal efficiency caused by incomplete combustion at the start of a ship cycle engine and bogie engine. It improves the thermal efficiency and acceleration performance of the engine by supplying it to the intake side of the engine, and produces electricity by providing gas turbine, power turbine and steam turbine using extra waste heat, exhaust gas and steam regardless of the load of the ship engine. The present invention provides a high efficiency combined cycle power generation system using a reciprocating engine equipped with one or more burners to increase production efficiency.

The present invention to achieve the object as described above and to perform the problem for eliminating the conventional drawbacks and a main engine for ship propulsion; A number of bogie engines for ship power generation; A turbocharger to which exhaust gas of the main engine is supplied; A heat exchanger supplied with exhaust gas discharged from the turbocharger of the main engine and the medium turbocharger of the bogie engine; A gas turbine power generation unit connected to the heat exchanger and supplied with compressed air heated through heat exchange with the exhaust gas supplied into the heat exchanger, into the combustor, the compressor being connected to the main engine and the bogie engine; A boiler to which exhaust gas discharged from the turbocharger and the medium-sized turbocharger or exhaust gas heat-exchanged in the heat exchanger is supplied; A first burner for heating the exhaust gas supplied to the boiler; A steam turbine power generation unit connected to the boiler and driven by steam generated through heat exchange with exhaust gas supplied into the boiler; And a power turbine power generation unit to which a part of the exhaust gas supplied from the cycle engine is supplied to the turbocharger. At the initial start of the cycle engine or bogie engine, a compressor of the gas turbine power generation unit is driven to generate compressed air. The generated compressed air is supplied through the initial supply line to the intake air reservoir of the main engine or the exhaust pipe of the bogie engine to minimize the generation of smoke due to incomplete combustion of fuel generated during the initial start of the main engine or bogie engine. It is achieved by providing a high-efficiency combined cycle power generation system using a reciprocating engine, characterized in that to increase the temperature of the steam produced in the boiler to increase the power production efficiency of the steam turbine generator.

The present invention further includes a second burner installed in a surplus gas line branched from a first exhaust pipe for transporting the exhaust gas discharged from the main engine to heat the exhaust gas supplied to the power turbine power generation unit. Can be configured.

According to a preferred embodiment, the present invention may further include a third burner installed in the first exhaust pipe immediately after being discharged from the main engine and heating the exhaust gas supplied to the power turbine power generation unit.

According to a preferred embodiment of the present invention, the combustor of the cycle engine and the gas turbine power generation unit is connected by a first bypass pipe, and the bogie engine and the combustor of the gas turbine power generation unit are connected by a second bypass pipe. The exhaust of the engine can be configured to be fed directly into the combustor.

According to a preferred embodiment of the present invention, the gas turbine power generation unit is connected by a main engine and an initial supply line, and is connected to a bogie engine and an initial supply line, and a compressor connected by a heat exchanger and a supply line; A combustor connected by the compressor, the heat exchanger, and a supply line; A turbine connected with the combustor; It may include a generator that is connected and driven through the turbine and the reducer.

In accordance with a preferred embodiment of the present invention, a multi-jet nozzle may be installed in the combustor.

According to an embodiment of the present invention, the steam turbine power generation unit may include a steam turbine supplied with steam generated from a boiler through a steam pipe, and a generator connected and driven by the steam turbine and a reducer.

According to a preferred embodiment of the present invention, the power turbine power generation unit includes a power turbine connected to a surplus gas line branched to a first exhaust pipe for discharging exhaust gas of a main engine, and a generator connected and driven through the power turbine and a speed reducer. It may include.

According to an exemplary embodiment of the present invention, the surplus exhaust gas of the main engine may be supplied to the second exhaust pipe through an excess gas line connected to the first exhaust pipe, supplied to a boiler, or supplied to a heat exchanger through a moving line. .

The present invention is a cycle in which a diesel engine or a gasoline engine type reciprocating engine is used, and a conventional problem that smoke is generated due to incomplete combustion due to insufficient air volume during initial operation of a bogie engine, and that the thermal efficiency of the engine is lowered. Supply at the initial start of engine and bogie engine to reduce smoke generation, improve thermal efficiency and improve engine acceleration performance, and at the same time use extra waste heat, exhaust gas and steam regardless of the load of ship engine, gas turbine, power turbine and steam The turbine has the advantage of producing electricity and increasing the efficiency of electricity production.

Specifically, the present invention is to supply high-pressure compressed air from the gas turbine compressor during the initial start of the cycle and bogie engine to reduce the smoke caused by incomplete combustion during engine start and to improve the thermal efficiency and acceleration performance of the engine. The compressor of the gas turbine power generation unit can supply high-pressure air pressure at the initial start of the cycle engine, thereby preventing incomplete combustion of the cycle engine, thereby significantly reducing the generation of smoke, and at the same time using excess exhaust gas and steam. Power turbines and steam turbines are used to generate electricity, and at least one burner is installed in the exhaust gas line to increase the efficiency of electricity production.

Thus, the present invention is because the high pressure air pressure is supplied by the compressor into the main engine, it is possible to minimize the environmental pollution in the coast or harbor, and

In addition, in the case of a power generation system using existing waste heat, the engine load must be more than 50%, but in the present invention, it is easy to manage a constant power generation output by providing a system for driving a gas turbine regardless of the load of the ship engine. In the present invention, the advantage that the power generation by driving the gas turbine at less than 50%,

In addition, the present invention heat exchanges the waste heat of the exhaust gas discharged from the main and bogie engine, that is, the waste heat of the exhaust gas discharged to the outlet of the turbocharger and the compressed air supplied into the combustor of the gas turbine power generation unit, the compressed air supplied into the combustor Preheated to a predetermined temperature, it is possible to reduce the amount of fuel supplied to the combustor,

In addition, the present invention can efficiently drive the gas turbine power generation unit and the steam turbine power generation unit by heat exchange with the main engine exhaust gas, so that one to two bogie engines (power generating diesel engines) for power generation are installed. To reduce the degree

In addition, the present invention can be used by directly supplying the excess exhaust gas of the cycle engine to the combustor by the bypass pipe, it is possible to reduce the fuel of the combustor, and improve the thermal efficiency by about 5%,

In addition, the present invention is to supply the surplus exhaust gas of the main engine to the second exhaust pipe through the surplus gas line, not only can reduce the fuel of the gas turbine combustor, but also can be sent to the boiler to produce steam,

In addition, the present invention is to install the fuel nozzle of the gas turbine power generation unit combustor as a multi-fuel nozzle to selectively use gas, diesel, and heavy oil, to diversify fuel selection, thereby applying to the vessel regardless of the vessel fuel It is a useful invention with the advantage that there are many effects such as can be installed is an invention that is expected to use greatly in the industry.

1 is an illustration showing a configuration according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 shows an exemplary view showing a configuration according to the present invention, the present invention is the main engine 10 and the bogie engine 70,

A turbocharger 20 to which exhaust gas of the main engine 10 is supplied;

A heat exchanger 30 to which exhaust gas discharged from the turbocharger 20 and the medium turbocharger 73 of the bogie engine is supplied;

Compressed air, which is connected to the heat exchanger 30 and heated by heat exchange with the exhaust gas supplied into the heat exchanger 30, is supplied into the combustor 42, and the compressor 41 is supplied to the cycle engine 10 and the bogie. A gas turbine power generation unit 40 connected to the engine 70,

A boiler 50 to which exhaust gas discharged from the turbocharger 20 or exhaust gas heat exchanged in the heat exchanger 30 is supplied;

First burner 100 for heating the exhaust gas supplied to the boiler,

A steam turbine power generation unit 60 connected to the boiler 50 and driven by steam generated through heat exchange with the exhaust gas supplied into the boiler 50;

It comprises a power turbine power generation unit 90 is supplied a portion of the exhaust gas supplied to the turbocharger 20 in the cycle engine 10,

At initial start-up of the cycle engine 10 or the bogie engine 70, the compressor 41 of the gas turbine power generation unit is driven to generate compressed air, and the generated compressed air is provided through the initial supply lines 83 and 83a. (10) is supplied into the intake air reservoir (14) or intake pipe (72) of the bogie engine to minimize the generation of smoke due to incomplete combustion of fuel generated during initial startup of the main engine or bogie engine. Raising the temperature of the steam produced in the boiler is configured to increase the power production efficiency of the steam turbine generator 60.

In addition, in the present invention, a second burner 101 is installed in the surplus gas line 86 branched from the first exhaust pipe 11 for transferring the exhaust gas discharged from the main engine 10 to the power turbine power generation unit 90. It is configured to increase the power production efficiency of the power turbine power generation unit by heating the exhaust gas supplied.

In addition, in the present invention, a third burner 102 is installed to heat the first exhaust pipe 11 immediately after being discharged from the main engine, and heats the exhaust gas supplied to the power turbine power generation unit 90 to produce power of the power turbine power generation unit. It is configured to increase the efficiency. At this time, the heated exhaust gas continuously increases the generation efficiency of the turbocharger 20, the gas turbine power generation unit 40, and the steam turbine power generation unit 60.

The first burner 100, the second burner 101, and the third burner 102 have a combustion efficiency of nearly 100% and a greater energy increase effect due to power generation than energy consumed by burner operation. There is this.

In addition, the present invention increases the temperature of the compressed air supplied into the combustor of the gas turbine power generation unit through heat exchange with the waste heat of the exhaust gas discharged from the cycle engine and bogie engine, thereby reducing the amount of fuel supply in the combustor as well as exhaust The waste heat of the gas makes it possible to drive the steam turbine power generation unit.

In addition, in the present invention, the main engine 10 and the combustor 42 of the gas turbine power generation unit are connected by the first bypass pipe 81, and the bogie engine 70 and the combustor 42 of the gas turbine power generation unit are the second. Connected by a bypass pipe 82, exhaust gases of the main engine 10 and the bogie engine 70 are supplied directly into the combustor 42.

The turbocharger 20 is a large turbocharger for improving the efficiency of the ship propulsion engine 10. The exhaust gas discharged from the engine 10 is transferred to the turbine 21 through the first exhaust pipe 11. It is supplied and driven, and compressed air is supplied to the main engine 10 by the drive of the compressor 22 connected to the turbine 21 by the shaft. Since the configuration of the turbocharger 20 is a known configuration, a detailed description thereof will be omitted.

The bogie engine 70 is installed for the production of ship power, the medium turbocharger 73 is connected and installed, the turbine outlet of the medium turbocharger 73 is the second exhaust pipe by the exhaust gas line 85 In connection with (12), the exhaust gas of the bogie engine can be supplied to the second exhaust pipe (12).

In addition, the first exhaust pipe 11 is connected to the surplus gas line 86 connected to the exhaust gas line 85 after the power generation through the power turbine power generation unit 90, about 10% generated in the cycle engine It is possible to supply the excess exhaust gas to the second exhaust pipe 12 through the power turbine power generation unit 90 without passing through the turbocharger 20 of the degree, the excess exhaust gas supplied in this way is gas In addition to saving fuel in the turbine combustor, it is also provided with a function of producing steam to be fed to the boiler.

The power turbine power generation unit 90 includes a power turbine 91 connected to the surplus gas line 86, and a generator 93 connected and driven through the power turbine 91 and the reducer 92.

The heat exchanger (30) is a predetermined temperature through heat exchange with the main engine and the bogie engine exhaust gas compressed air compressed by the compressor (41) of the gas turbine power generation unit (40). A portion of the exhaust gas discharged from the outlet of the turbocharger and a portion of the exhaust gas of the bogie engine 70 which is moved along the exhaust gas line 85 is heated to a temperature of about 300 to 350 ° C. ) Is supplied into the heat exchanger (30), and compressed air discharged from the compressor (41) of the gas turbine power generation unit is supplied into the heat exchanger (30) through the supply line (46), so that heat exchange occurs in each other in the heat exchanger. Compressed air, which is compressed by the compressor 41 and has a temperature of about 200 ° C. by such heat exchange, is heated to a temperature of about 300 ° C. to 350 ° C. and thus the combustor 41 of the gas turbine power generation unit 40. Will be supplied.

That is, the moving line 13 for supplying exhaust gas into the heat exchanger 30 is connected to the second exhaust pipe 12 connecting the turbocharger 20 and the boiler 50, and the compressor of the gas turbine power generation unit. The supply line 46 connecting the 41 and the combustor 42 is configured to pass through the heat exchanger 30, so that the exhaust gas and the supply line 46 of the main engine and the bogie engine supplied by the moving line 13 are provided. Compressed air is supplied through the heat exchange is made to each other in the heat exchanger (30).

In addition, the moving line 13 is provided with a plurality of on-off valves (16).

In addition, one side of the exhaust gas line 85 is connected to the turbine outlet of the medium-sized turbocharger 73 of the bogie engine, and the other side thereof is connected to the second exhaust pipe 12 so that the exhaust gas of the bogie engine is moved to the moving line 13. It is supposed to supply.

The gas turbine power generation unit 40 is connected to the main engine 10 and the initial supply line 84, the compressor 41 is connected by the heat exchanger 30 and the supply line 46, and the compressor 41 And the combustor 42 connected by the heat exchanger 30 and the supply line 46, the turbine 43 connected to the combustor 42, and the turbine 43 and the reducer 44. And a generator 45 for driving.

The compressor (41) is connected to the heat exchanger (30) and the combustor (42) by a supply line (46), and to the intake air reservoir (14) of the main engine (10) by an initial supply line (83). The compressed air is supplied to the combustor 42 or the cycle engine 10.

The initial supply line 83 is for supplying the compressed air compressed by the compressor 41 to the cycle engine 10 at the initial startup of the cycle engine 10, and is provided with an on-off valve 84.

The supply line 46 is for supplying the compressed air compressed by the compressor 41 into the combustor 42, and is configured to pass through the heat exchanger 30.

The combustor 42 heats the compressed air supplied from the compressor through combustion of the fuel and supplies the compressed air to the turbine 43. The combustor 42 uses a multi-jet nozzle to enable the use of fuel such as gas, light oil or heavy oil. 47) is installed.

The installation of the multi-injection nozzle 47 as described above is intended to have an advantage of flexibility of fuel, and is to reduce fuel costs due to the selection of fuel diversity rather than a simple selection of fuel.

In the gas turbine power generation unit 40 configured as described above, air is sucked and compressed by the compressor 41, and the compressed air (about 200 ° C.) is about 300 through heat exchange with exhaust gas in the heat exchanger 30. Heated to a temperature of about ~ 350 ℃, the compressed air heated by the heat exchange is supplied into the combustor 42, heated to maintain about 750 ℃ by the combustion of the fuel, and then supplied to the turbine 43 is supplied to the generator ( 45).

Such a gas turbine power generation unit 40 is able to replace the viewing engine for power generation.

In addition, the combustor 42 is connected by the main engine 10 and the first bypass pipe 81, and further connected by the bogie engine 70 and the second bypass pipe 82, the periodic engine Since the exhaust gas of (10) and the exhaust gas of the bogie engine 70, that is, the high-temperature exhaust gas, are supplied, it is possible to reduce the fuel supply amount for heating and to improve the thermal efficiency.

The boiler 50 is to receive the necessary steam or hot water by heating the water supply, the boiler 50 is connected to the outlet of the turbocharger 20 by the second exhaust pipe 12 to supply a high temperature exhaust gas It is to be received.

The boiler 50 configured as described above generates steam for driving the steam turbine power generation unit 60 through heat exchange between the supplied hot exhaust gas and the water supplied by the motor 51 and the pump 52. .

The steam turbine power generation unit 60 is connected to and driven by the steam turbine 62 which receives the steam generated from the boiler 50 through the steam pipe 61, and the steam turbine 62 and the reducer 63. And a generator 64.

The steam turbine power generation unit 60 configured as described above generates power by driving the steam turbine 62 by steam to drive the generator 64, and the steam turbine power generation unit 60 is configured to generate power. The replacement of the view engine. Reference numeral 90 is a blower.

Hereinafter, the operational effects of the present invention will be described.

Initial startup of the cycle engine or bogie engine

At initial start-up of the cycle engine 10 or the bogie engine 70, the compressor 41 of the gas turbine power generation unit is driven to generate compressed air, and the generated compressed air is cycled through the initial supply lines 83 and 83a. The intake air reservoir 14 of the engine 10 or the intake pipe 72 of the bogie engine 70 is supplied. At this time, the gas turbine power generation unit 40 is provided with a state that does not generate power.

Since the high-pressure compressed air is supplied to the cycle engine or the bogie engine by the compressor of the gas turbine power generation unit as described above, it is possible to minimize the generation of smoke due to incomplete combustion of the fuel generated during the initial startup of the cycle engine or the bogie engine.

-Operation of gas turbine power generation unit

The exhaust gas is supplied to the turbocharger 20 through the first exhaust pipe 11 by the driving of the cycle engine 10 to drive the turbocharger 20, and the exhaust gas a discharged from the turbocharger 20. ) Is supplied to the heat exchanger 30 through the second exhaust pipe 12 and the moving line 13.

In addition, when the bogie engine 70 is driven, the exhaust gas discharged to the turbine outlet of the medium turbocharger 73 by the bogie engine is driven through the exhaust gas line 85 and the second exhaust pipe 12 and the movement line ( 13), and is supplied to the heat exchanger (30).

In addition, the compressed air b compressed by the compressor 41 of the gas turbine power generation unit 40 is supplied into the heat exchanger 30 through the supply line 46, and exhaust gas ( After heating to 300-350 degreeC by heat exchange with a), it is supplied into the combustor 42.

In this way, the high temperature compressed air supplied into the combustor 42 is heated to about 750 ° C. by the combustion of fuel in the combustor to drive the turbine 43, thereby driving the generator 45 to generate electric power. At this time, the exhaust gas c discharged through the turbine 43 is supplied to the boiler 30 via the second pipe 12 through the discharge line 48.

In addition, since the compressed air supplied into the combustor 42 has a temperature of about 300 to 350 ° C. higher than the normal compressed air temperature (about 200 ° C.) by the heat exchanger 30, the compressed air supplied into the combustor 42 is supplied into the combustor. The amount of fuel supplied can be reduced. That is, since the compressed air of high temperature is supplied into the combustor, it is possible to reduce the consumption of fuel for heating it to about 750 ℃.

In addition, by supplying the surplus exhaust gas of 10% of the exhaust gas discharged from the main engine through the surplus gas line 86 connected to the exhaust gas line 85, the exhaust gas supplied through the exhaust gas line 85 of the bogie engine In addition, by supplying to the second exhaust pipe 12 and the moving line 13 to the heat exchanger 30, it is possible to reduce the consumption of fuel.

-Power turbine drive section

Exhaust gas is supplied to the turbocharger 20 through the first exhaust pipe 11 by the operation of the cycle engine 10, and when the turbocharger 20 is driven, about 10% of the exhaust gas is surplus gas line 86. It is supplied to the power turbine power generation unit 90 through). At this time, the exhaust gas is heated and supplied again by the second burner 101 installed in the surplus gas line 86 before being supplied to the power turbine power generation unit. As a result, the temperature of the exhaust gas supplied to the power turbine power generation unit is increased to increase the output of the power turbine, thereby increasing the power production efficiency of the generator.

The supplied exhaust gas drives the power turbine 91 to drive the generator 93 to generate electric power. At this time, the exhaust gas discharged through the power turbine 91 is supplied to the boiler 30 via the second pipe 12 through the surplus gas line 86.

In addition, the third burner 101 installed in the first exhaust pipe 11 immediately after being discharged from the main engine 10 is installed to further increase the power production efficiency of the power turbine generator.

-Operation of steam turbine power generation part

The exhaust gas a is supplied to the turbocharger 20 through the first exhaust pipe 11 by the driving of the cycle engine 10 to drive the turbocharger 20, and the exhaust gas a discharged from the turbocharger. ) Is supplied to the boiler 50 through the second exhaust pipe (12). At this time, the exhaust gas is heated and supplied again by the first burner 100 installed in the second exhaust pipe 12 before being supplied to the boiler. This increases the temperature of the steam supplied to the steam turbine power generation unit to increase the output of the steam turbine to increase the power production efficiency of the generator.

In addition, when the bogie engine 70 is driven, the exhaust gas discharged to the turbine outlet of the medium-sized turbocharger 73 by the bogie engine is driven through the exhaust gas line 85 and the second exhaust pipe 12. 50).

As such, the high temperature exhaust gas a supplied into the boiler 50 heats the water supplied into the boiler 50 by the motor 51 and the pump 52 to generate steam d. The generated steam (d) is supplied to the steam turbine 62 through the steam pipe 61 to drive the steam turbine 62, thereby driving the generator 64 to generate power.

At this time, the exhaust gas (a) of the cycle engine and the exhaust gas (c) discharged through the turbine of the gas turbine power generation unit is supplied into the boiler.

-Combustor Fuel Saving Mode

Surplus exhaust gas of 10% of the exhaust gas discharged from the main engine or the bogie engine is supplied into the combustor of the gas turbine power generation unit through the first bypass pipe or the second bypass pipe. As such, when a high temperature exhaust gas is supplied into the combustor, it is possible to reduce the consumption of fuel for heating the air to about 750 ° C in the combustor.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): Main engine (11): Primary exhaust pipe
(12): second exhaust pipe (13): moving line
14: intake air storage (15): exhaust air storage
20: turbocharger 21: turbine
22: compressor 30: heat exchanger
40: gas turbine power generation unit 41: compressor
42: combustor 43: turbine
(44): reducer (45): generator
46: supply line 47: multi-jet nozzle
50: boiler 51: motor
(52): pump 60: steam turbine power generation unit
(61): steam piping (62): steam turbine
(63): reducer (64): generator
(70): Bogie Engine (71): Exhaust Pipe
(72): Intake pipe (73): Medium turbocharger
(81): 1st bypass pipe (82): 2nd bypass pipe
(83): Initial supply line (84): On-off valve
(85): exhaust gas line (86): surplus gas line
(90): power turbine power generation unit (91): power turbine
92: reducer 93: generator
100: first burner 101: second burner
102: third burner

Claims (9)

A cycle engine 10 for ship propulsion; A plurality of bogie engines 70 for ship power production; A turbocharger 20 to which exhaust gas of the main engine 10 is supplied; A heat exchanger 30 to which exhaust gas discharged from the turbocharger 20 of the main engine and the medium-sized turbocharger 73 of the bogie engine is supplied; Connected to the heat exchanger 30, the heated compressed air through heat exchange with the exhaust gas supplied into the heat exchanger 30 is supplied into the combustor 42, the compressor 41 is the cycle engine 10 and bogie engine A gas turbine power generation unit 40 connected to the 70; A boiler 50 to which exhaust gas discharged from the turbocharger 20 and the medium-sized turbocharger 73 or exhaust gas heat-exchanged from the heat exchanger 30 is supplied; A first burner (100) for heating the exhaust gas supplied to the boiler; A steam turbine power generation unit 60 connected to the boiler 50 and driven by steam generated through heat exchange with the exhaust gas supplied into the boiler 50; It comprises a power turbine power generation unit 90 is supplied a portion of the exhaust gas supplied to the turbocharger 20 from the cycle engine 10, the initial start of the cycle engine 10 or bogie engine 70 Compressor 41 of the gas turbine power generation unit is driven to generate compressed air, and the generated compressed air is supplied to the intake air reservoir 14 or bogie engine of the main engine 10 through the initial supply lines 83 and 83a. Supplied to the exhaust pipe (72), while minimizing the generation of smoke due to incomplete combustion of the fuel generated during the initial startup of the cycle engine or bogie engine, while raising the temperature of the steam produced in the boiler steam turbine power generation unit 60 High efficiency hybrid power generation system using a reciprocating engine, characterized in that configured to increase the power production efficiency. The method of claim 1,
A second burner installed in the surplus gas line 86 branched from the first exhaust pipe 11 for transferring the exhaust gas discharged from the main engine 10 to heat the exhaust gas supplied to the power turbine power generation unit 90. High efficiency combined cycle power generation system using a reciprocating engine, characterized in that the configuration further comprises.
The method of claim 1,
And a third burner (102) installed in the first exhaust pipe (11) immediately after being discharged from the cycle engine to heat the exhaust gas supplied to the power turbine power generation unit (90). High efficiency combined cycle power generation system.
The method of claim 1,
The cycle engine 10 and the combustor 42 of the gas turbine power generation unit are connected by the first bypass pipe 81, and the bogie engine 70 and the combustor 42 of the gas turbine power generation unit are connected to the second bypass pipe ( 82), the high efficiency combined cycle power generation system using a reciprocating engine, characterized in that the exhaust gas of the main engine (10) and bogie engine 70 is configured to be supplied directly into the combustor (42). The method of claim 1,
The gas turbine power generation unit 40 is connected by the main engine 10 and the initial supply line 83 and is connected to the bogie engine 70 and the initial supply line 83a, the heat exchanger 30 and the supply line ( A compressor 41 connected by 46;
A combustor 42 connected by the compressor 41 and the heat exchanger 30 and the supply line 46;
A turbine 43 connected to the combustor 42;
A high efficiency hybrid power generation system using a reciprocating engine, comprising; a generator (45) connected and driven through the turbine (43) and the reducer (44).
The method of claim 5, further comprising:
A high efficiency combined cycle power generation system using a reciprocating engine, characterized in that the multi-injection nozzle is installed in the combustor.
The method of claim 1,
The steam turbine power generation unit 60 is connected to and driven by the steam turbine 62 which receives the steam generated from the boiler 50 through the steam pipe 61, and the steam turbine 62 and the reducer 63. High efficiency composite power generation system using a reciprocating engine, characterized in that it comprises a generator (64).
The method of claim 1,
The power turbine power generation unit 90 includes a power turbine 91 connected to the surplus gas line 86 branched to the first exhaust pipe 11 for discharging the exhaust gas of the main engine, the power turbine 91 and the speed reducer. High efficiency hybrid power generation system using a reciprocating engine, characterized in that it comprises a generator (93) connected and driven through (92).
The method of claim 1,
The excess exhaust gas of the main engine 10 is supplied to the second exhaust pipe 12 through the surplus gas line 86 connected to the first exhaust pipe 11, and is supplied to the boiler 50 or the moving line 13. High efficiency composite power generation system using a reciprocating engine, characterized in that configured to be supplied to the heat exchanger 30 through.

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