KR101868271B1 - Device and method for suppling of working fuid - Google Patents

Device and method for suppling of working fuid Download PDF

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Publication number
KR101868271B1
KR101868271B1 KR1020170034736A KR20170034736A KR101868271B1 KR 101868271 B1 KR101868271 B1 KR 101868271B1 KR 1020170034736 A KR1020170034736 A KR 1020170034736A KR 20170034736 A KR20170034736 A KR 20170034736A KR 101868271 B1 KR101868271 B1 KR 101868271B1
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South Korea
Prior art keywords
working fluid
storage tank
pump
transfer pipe
pipe
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KR1020170034736A
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Korean (ko)
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차송훈
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두산중공업 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F01K25/103—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a working fluid supply device, comprising: a storage tank for storing a working fluid; a first pump for boosting and supplying a part of the working fluid stored in the storage tank for power generation; And a second pump for boosting and supplying a part of the fluid to the turbomachine, wherein the storage tank is connected to the first pump and the second pump and the transfer pipe, respectively. It has the effect of enhancing price competitiveness by utilizing a reasonably priced separate working fluid supply device depending on the purpose of supplying the working fluid.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a working fluid supply device, and more particularly, to a working fluid supply device capable of stably supplying a working fluid for a power generation system and a working fluid for a turbo machine, respectively.

Internationally, there is a growing need for efficient power generation. As the movement to reduce pollutant emissions becomes more and more active, various efforts are being made to increase the production of electricity while reducing the generation of pollutants. Research and development of a supercritical CO2 generation system using supercritical carbon dioxide as a working fluid is being promoted.

Since supercritical carbon dioxide has a gas-like viscosity at a density similar to that of a liquid state, it can minimize the power consumption required for compression and circulation of the fluid as well as miniaturization of the apparatus. At the same time, the critical point is 31.4 degrees Celsius, 72.8 atmospheres, and the critical point is much lower than the water at 373.95 degrees Celsius and 217.7 atmospheres, which is easy to handle. The supercritical carbon dioxide power generation system has a net generation efficiency of about 45% when operated at a temperature of 550 ° C. and has an advantage of improving the generation efficiency of the steam cycle by 20% or more and reducing the turbo device.

Generally, a supercritical carbon dioxide power generation system forms a closed cycle that does not discharge the carbon dioxide used for power generation, and uses supercritical carbon dioxide as a working fluid.

The working fluid is fed into the cycle for two purposes: power generation, which is injected into the power generation cycle to drive the turbo machinery, and turbo machines for bearing lubrication and sealing of the turbo machine. One example of a method of supplying a working fluid is disclosed in U.S. Patent No. 8281593. [

The working fluid filling system disclosed in the above-mentioned prior art was a method of supplying the working fluid stored in the storage tank to the inside of the cycle and the turbo machine using a high-pressure piston pump. A single high-pressure piston pump was able to supply the working fluid for lubrication and sealing purposes inside the cycle, which made the equipment very expensive, which resulted in an increase in the construction cost of the working fluid supply system.

US Patent No. 8281593 (Registration date October 10, 2012)

An object of the present invention is to provide a working fluid supply device capable of stably supplying a working fluid for a power generation system and a working fluid for a turbo machine, respectively.

A working fluid supply device of the present invention comprises a storage tank for storing a working fluid, a first pump for boosting and supplying a part of the working fluid stored in the storage tank for power generation, And a second pump for supplying a part of the pressurized water to the turbomachine, wherein the storage tank is connected to the first pump and the second pump respectively through a transfer pipe.

The first pump boosts the working fluid at a first highest pressure and the second pump boosts the working fluid at a second highest pressure.

And the first maximum pressure is lower than the second maximum pressure.

And the working fluid boosted by the first pump is supplied to a power generation cycle.

And the working fluid boosted by the second pump is supplied to the turbo machine.

Characterized in that the working fluid is supplied to the bearing system and the sealing system of the turbo machine.

Wherein the transfer pipe includes a first transfer pipe connected to one side of the storage tank, a second transfer pipe connecting the other side of the storage tank and the second pump, and a second transfer pipe branched from the second transfer pipe, And a fourth conveyance pipe connected to a discharge end of the first pump.

The transfer pipe further includes a fifth transfer pipe connected to a discharge end of the first transfer pipe and the fourth transfer pipe.

And a mass control tank or a heat engine connected to the storage tank by a discharge line discharging a working fluid to the storage tank.

And the working fluid passing through the fifth conveyance pipe is selectively supplied to any one of the main cycle, the mass control tank, and the heat engine.

And the fifth conveyance pipe is provided with a three-way valve.

The first transfer pipe, the fourth transfer pipe, and the discharge line are provided with a valve for controlling the flow rate of the working fluid.

The present invention also relates to a method of controlling an internal combustion engine, comprising a storage tank for storing a working fluid and a second pump for boosting a part of the working fluid stored in the storage tank, wherein a part of the working fluid stored in the storage tank is boosted And a part of the working fluid stored in the storage tank is supplied to the turbo machine by stepping up from the second pump to the turbo machine.

And the second pump boosts the working fluid for the turbo machine to a pressure higher than the pressure of the working fluid supplied into the main cycle.

The working fluid supplied to the turbo machine is supplied to the bearing system and the sealing system of the turbo machine.

Wherein the working fluid stored in the storage tank is conveyed along a conveyance pipe and the conveyance pipe includes a first conveyance pipe connected to one side of the storage tank and a second conveyance pipe connected to the other side of the storage tank and the second pump A third conveyance pipe branched from the second conveyance pipe, and a fourth conveyance pipe connecting the first conveyance pipe and the third conveyance pipe.

Further comprising a mass control tank or a heat engine connected to the storage tank by a discharge line for discharging the working fluid to the storage tank and the working fluid passing through the fourth transfer pipe is connected to the main cycle and the mass control tank And is selectively supplied to any one of the heat engines.

The first transfer pipe, the fourth transfer pipe, and the discharge line are provided with valves for regulating the flow rate of the working fluid, and the fourth transfer pipe is provided with a three-way valve.

Wherein the working fluid stored in the storage tank is conveyed along a conveyance pipe and the conveyance pipe includes a first conveyance pipe connected to one side of the storage tank and a second conveyance pipe connected to the other side of the storage tank and the second pump And a third conveyance pipe connected to the first conveyance pipe.

Further comprising a mass control tank or a heat engine connected to the storage tank by a discharge line for discharging the working fluid to the storage tank and the working fluid passing through the fourth transfer pipe is connected to the main cycle and the mass control tank The first transfer pipe is provided with a valve for controlling the flow rate of the working fluid, and the third transfer pipe is provided with a three-way valve .

The working fluid supply device according to the embodiment of the present invention has the effect of enhancing the price competitiveness by utilizing a reasonably priced separate working fluid supply device depending on the purpose of supplying the working fluid. In addition, since each working fluid supply device is operated in accordance with the application, it operates at a design point, and stable working fluid can be supplied even in an emergency situation, thereby improving system reliability. Further, auxiliary power consumption of the plant is reduced.

1 is a schematic diagram showing a working fluid supply device according to a first embodiment of the present invention,
2 is a schematic diagram showing a working fluid supply device according to a second embodiment of the present invention,
3 is a schematic diagram showing a working fluid supply device according to a third embodiment of the present invention.

Hereinafter, a working fluid supply apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

Generally, a supercritical carbon dioxide power generation system forms a closed cycle that does not discharge the carbon dioxide used for power generation, and uses supercritical carbon dioxide as a working fluid.

The supercritical carbon dioxide power generation system can be used not only in a single power generation system but also in a hybrid power generation system with a thermal power generation system since the working fluid is carbon dioxide in a supercritical state and exhaust gas discharged from a thermal power plant can be used. The working fluid of the supercritical carbon dioxide power generation system may separate carbon dioxide from the exhaust gas and supply the carbon dioxide separately.

The supercritical carbon dioxide in the cycle passes through a compressor and then is heated while passing through a heat source such as a heater to generate a high-temperature high-pressure working fluid to drive the turbine. The turbine is connected to a generator or a pump, which drives the pump using a turbine connected to the pump and generating power by the turbine connected to the generator. The working fluid passing through the turbine is cooled as it passes through the heat exchanger, and the cooled working fluid is supplied to the compressor again to circulate in the cycle. A plurality of turbines or heat exchangers may be provided.

A supercritical carbon dioxide power generation system according to various embodiments of the present invention includes not only a system in which all of the working fluid flowing in a cycle is in a supercritical state but also a system in which a majority of the working fluid is supercritical and the rest is subcritical It is used as a meaning.

Also, in various embodiments of the present invention, carbon dioxide is used as the working fluid, wherein carbon dioxide refers to pure carbon dioxide in the chemical sense, carbon dioxide in a state where the impurities are somewhat contained in general terms, and carbon dioxide in which at least one fluid is mixed Is used to mean a fluid in a state where the fluid is in a state of being fluidized.

1 is a schematic diagram showing a working fluid supply device according to a first embodiment of the present invention.

1, the working fluid supply apparatus according to the first embodiment of the present invention includes a turbo machine 500 of the above-described supercritical carbon dioxide power generation system and a supercritical carbon dioxide power generation system (supercritical carbon dioxide power generation Cycle, hereinafter referred to as the main cycle 600). To this end, the working fluid supply device includes a storage tank 100, a first pump 200 for supplying a working fluid for power generation, a second pump 300 for supplying a working fluid for bearing and sealing, Valve. In addition, a mass control tank or a heat engine may be additionally provided.

It is to be understood that each configuration of the present invention is connected by a transfer pipe through which the working fluid flows, and that the working fluid flows along the transfer pipe even if not specifically mentioned. However, in the case where a plurality of structures are integrated, it is to be understood that, in this case, the working fluid flows along the conveyance pipe, as there will be a part or region which actually acts as a conveyance pipe in the integrated structure Pipelines shall be numbered in parentheses).

The storage tank 100 stores the working fluid, and the two transfer tubes 110 and 120 are connected to the storage tank 100. The first transfer pipe 110 is connected to one side of the storage tank 100 and the second transfer pipe 120 is connected to the other side of the storage tank 100.

The first transfer pipe 110 is provided with a valve at a discharge end thereof, and the second transfer pipe 120 is connected to the second pump 300. At the beginning of the second transfer pipe 120, the third transfer pipe 122 is branched and connected to the first pump 200. The working fluid from the first transfer pipe 110 is mixed with the working fluid passing through the first pump 200 through the third transfer pipe 122 and supplied to the main cycle 600 through the fifth transfer pipe 230 . Or only the working fluid that has passed through the first pump 200 may be supplied to the main cycle 600. A fourth transfer pipe 210 is connected to the fifth transfer pipe 230 from the first pump 200 and a valve is provided at the discharge end of the fourth transfer pipe 210.

The working fluid supplied to the second pump 300 through the second transfer pipe 120 is supplied to the turbo machine 500 via the second pump 300. The transfer pipe connecting the turbo machine 500 at the rear end of the second pump 300 may also have a valve. The flow rate of the working fluid can be controlled by the valve, and the supply and shutoff of the working fluid is also achieved. The valve can be controlled by a separate control device (not shown).

The working fluid supplied to the main cycle 600 is processed to meet the condition of the first maximum pressure (Max Pressure 1) in the first pump 200 and the working fluid supplied to the turbo machine 500 is supplied to the second pump 300 ) At the second maximum pressure (Max Pressure 2).

The first pump 200 supplies the working fluid to the main cycle 600 and the main cycle 600 requires a large amount of working fluid intermittently. That is, since the supercritical carbon dioxide power generation cycle is basically a closed cycle, the supply of the working fluid is performed when the working fluid is introduced into the initial main cycle 600. Alternatively, the supply of the working fluid may be effected when additional supply of working fluid is required. The working fluid for power generation is supplied in a large amount and the pressure is also relatively low as compared with the working fluid for lubrication or sealing. Accordingly, in order to stably supply a large amount of low-pressure working fluid intermittently, the first pump 200 is preferably a centrifugal pump driven by an AC motor. Since AC motors use commercial power supply, it is good to supply a large amount of working fluid stably. It is not used continuously but is intermittently used. Therefore, there is an advantage that it is not greatly influenced by an emergency situation such as supply of AC power. The working fluid boosted by the first pump 200 may be supplied to the pump inlet of the main cycle.

The second pump 300 supplies a working fluid for lubrication of the bearing system of the turbo machine (e.g., turbine, hereinafter 500) in the main cycle 600 and sealing of the sealing system. Bearing and sealing systems require a small amount of working fluid versus the capacity required in the main cycle (600). However, since there is a characteristic of continuously requiring a high-pressure working fluid, it is difficult to apply a pump using an AC power source because it is greatly influenced by an emergency situation such as shutdown of a commercial power source. Therefore, it is preferable that the second pump 300 is a piston type pump driven by a DC motor so as to continuously and stably supply a high-pressure small capacity working fluid. To this end, a battery connected to the DC motor is additionally provided.

According to the working fluid supply system disclosed in the prior art mentioned in the prior art (U.S. Patent No. 8281593), the supply of the low-pressure large-capacity working fluid and the supply of the high-pressure small-capacity working fluid are simultaneously realized by one pump. However, in addition to the disadvantages of such expensive dual function pumps, in the emergency situation of the heat engine (400), there is a risk that the supply of a part of the working fluid of a high pressure and a small capacity is disadvantageous to the stable supply due to the interruption of the AC power supply. Further, there is a problem that the consuming power is partially wasted in the process of lowering the pressure to compress the high pressure to supply the high-pressure working fluid and supply the low-pressure working fluid again.

As described in the present invention, the aforementioned problems can be solved by implementing continuous supply of high-pressure small-capacity working fluid and intermittent supply of low-pressure large-capacity working fluid to different pumps.

Meanwhile, the working fluid may be discharged from the mass control tank or the heat engine 400, and the mass control tank or the heat engine 400 and the storage tank 100 may be connected to the discharge line 410. Although not shown in the drawings, the discharge line 410 may be provided with a valve, and the discharge line 410 may be opened or closed by a valve.

Further, when an emergency situation occurs in the mass control tank or the heat engine 400, it is necessary to supply the high-pressure working fluid to the small-amount mass control tank or the heat engine 400. [ At this time, a part of the working fluid of the storage tank 100 may be added to the mass control tank or the heat engine 400 through the fifth conveyance pipe 230 described above. In this case, since a high-pressure working fluid is required, a working fluid passing through the first pump 200 is supplied, or a working fluid fed through the first pump 200 and a working fluid fed through the first feeding pipe 110 are mixed . Although not shown in the drawing, a three-way valve may be provided at the discharge end of the fifth conveyance pipe 230 for supplying the working fluid to the mass control tank or the heat engine 400.

In the working fluid supply device according to the first embodiment of the present invention having the above-described configuration, a method of supplying the working fluid will be briefly described as follows.

When the working fluid is supplied into the main cycle (600), the first pump (200) boosts the working fluid under the first maximum pressure condition. The first pressure condition is about 120 bar (12 Mpa), which is relatively low compared to the pressure of the working fluid supplied to the turbo machine 500.

When the working fluid is supplied to the turbo machine 500, the second pump 300 boosts the working fluid under the second maximum pressure condition. The second pressure condition is about 240 bar (24 MPa) and is relatively high compared to the pressure of the working fluid supplied into the main cycle (600).

The working fluid raised to the first pressure condition is supplied into the main cycle 600 as needed, or supplied to the mass control tank or the heat engine 400 in an emergency such as an interruption of an AC power source.

The working fluid raised to the second pressure condition is continuously supplied to the turbo machine 500 and is used for lubrication and sealing in the bearing system and the sealing system.

As described above, according to the working fluid supply apparatus and method according to the embodiment of the present invention, there is an effect of enhancing the price competitiveness by utilizing a reasonably priced separate working fluid supply apparatus according to the purpose of supplying the working fluid. In addition, since each working fluid supply device is operated in accordance with the application, it operates at a design point, and stable working fluid can be supplied even in an emergency situation, thereby improving system reliability. Further, auxiliary power consumption of the plant is reduced.

In the above-described embodiment, the storage tank may be a pressure vessel (for example, a pressure vessel that can be applied to a pressure of 10 to 100 bar, such as a Dewar Flask).

Hereinafter, a working fluid supply apparatus and method according to other embodiments of the present invention will be described. (For the sake of simplicity, detailed description of the same structure as the above embodiment will be omitted).

2 is a schematic diagram showing a working fluid supply device according to a second embodiment of the present invention.

As shown in FIG. 2, the working fluid supply device according to the second embodiment of the present invention may be configured in the form of removing the first pump and only the second pump 300 'in the first embodiment. The second pump 300 'may be constituted by a piston type pump driven by a DC motor as in the first embodiment.

The first transfer pipe 110 'is connected to one side of the storage tank 100', the second transfer pipe 120 'is connected to the other side and the third transfer pipe 210' is connected to the second transfer pipe 120 ' '). The discharge ends of the first transfer pipe 110 'and the third transfer pipe 210' are connected by a fourth transfer pipe 230 '. A valve may be provided at the discharge end of the first transfer pipe 110 'and the third transfer pipe 210', and a three-way valve may be provided at the fourth transfer pipe 230 '.

The working fluid exits the storage tank 100 'and is supplied to the main cycle 600' via the third conveyance pipe 210 'or the first conveyance pipe 110' and the third conveyance pipe 210 ' The working fluid from the storage tank 100 'is mixed through the four-way pipe 230'. And then may be supplied to the main cycle 600 'via the fourth transfer pipe 230', and the working fluid at this time is supplied at the first maximum pressure (the pressure of the storage tank is maintained at the first maximum pressure). If necessary, a part of the working fluid passing through the fourth conveyance pipe 230 'may be supplied to the mass control tank or the heat engine 400'.

The working fluid sent out from the storage tank 100 'to the second pump 300' through the second transfer pipe 120 'is raised to the second highest pressure from the second pump 300' May be supplied to the machine 500 '.

The pressure of the storage tank 100 'is maintained at the first highest pressure (for example, 120 bar.a) or the pressure of the storage tank 100' is lower than the pressure at the inlet end of the second pump 300 ' If it is kept high, the working fluid can be supplied to the main cycle 600 'by the pressure difference even if the first pump is eliminated.

3 is a schematic diagram showing a working fluid supply device according to a third embodiment of the present invention.

As shown in Fig. 3, the working fluid supply device according to the third embodiment of the present invention eliminates the third conveyance pipe 122 '' and the fourth conveyance pipe 210 '' in the second embodiment, 2 pump 300 ". The second pump 300 may be constituted by a piston type pump driven by a DC motor as in the first embodiment.

A first transfer pipe 110 '' is connected to one side of the storage tank 100 '' and a second transfer pipe 120 '' is connected to the other side. A third conveyance pipe 230 '' is connected to the discharge end of the first conveyance pipe 110 ''. A valve may be provided at the discharge end of the first transfer pipe 110 ", and a three-way valve may be provided at the third transfer pipe 230 ".

The working fluid exits the storage tank 100 "and is supplied to the main cycle 600" via the first transfer pipe 110 "and the third transfer pipe 230" A portion of the working fluid that has passed through the mass control tank 230 " may be supplied to the mass control tank or the heat engine 400 ". At this time, the working fluid is supplied at the first maximum pressure (keeping the pressure of the storage tank at the first maximum pressure).

Also, the working fluid that is sent out of the storage tank 100 "and sent to the second pump 300" via the second transfer tube 120 "is transferred from the second pump 300" to the second highest pressure May be boosted and then supplied to the turbo machine 500 ".

When the pressure of the storage tank 100 is maintained at the first highest pressure (for example, 120 bar.a) or the pressure of the storage tank 100 is maintained higher than the pressure at the inlet end of the second pump 300 in the above-described embodiment , The working fluid can be supplied to the main cycle 600 by the pressure difference even if the first pump is removed.

One embodiment of the present invention described above and shown in the drawings should not be construed as limiting the technical spirit of the present invention. The scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and modify the technical spirit of the present invention in various forms. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100, 100 ', 100: Storage tank
200, 200 ', 200: first pump
300, 300 ', 300: Second pump
400, 400 ', 400: Mass control tank or heat engine
500, 500 ', 500: turbo machine
600, 600 ', 600: main cycle

Claims (20)

A storage tank for storing a working fluid,
A first pump for boosting and supplying a part of the working fluid stored in the storage tank to power generation;
And a second pump for boosting and supplying a part of the working fluid stored in the storage tank to a turbomachine,
Wherein the storage tank is connected to the first pump and the second pump and to the transfer pipe, respectively. The method according to claim 1,
Wherein the first pump boosts the working fluid at a first maximum pressure and the second pump boosts the working fluid at a second maximum pressure. 3. The method of claim 2,
Wherein the first maximum pressure is lower than the second maximum pressure. The method of claim 3,
Wherein the working fluid boosted by the first pump is supplied to the main cycle. 5. The method of claim 4,
And the working fluid raised in the second pump is supplied to the turbo machine. 6. The method of claim 5,
Wherein the working fluid is supplied to the bearing system and the sealing system of the turbo machine. The method according to claim 6,
Wherein the transfer pipe includes a first transfer pipe connected to one side of the storage tank, a second transfer pipe connecting the other side of the storage tank and the second pump, and a second transfer pipe branched from the second transfer pipe, And a fourth conveying pipe connected to a discharge end of the first pump. 8. The method of claim 7,
Wherein the transfer tube further comprises a fifth transfer pipe connected to a discharge end of the first transfer pipe and the fourth transfer pipe. 9. The method of claim 8,
And a mass control tank or heat engine connected to the storage tank by a discharge line for discharging working fluid to the storage tank. 10. The method of claim 9,
Wherein the working fluid passing through the fifth conveyance pipe is selectively supplied to one of the main cycle and the mass control tank or the heat engine. 11. The method of claim 10,
Wherein the fifth conveyance pipe is provided with a three-way valve. 11. The method of claim 10,
Wherein the first transfer pipe, the fourth transfer pipe, and the discharge line are provided with valves for regulating the flow rate of the working fluid. A storage tank for storing a working fluid,
And a second pump for boosting a part of the working fluid stored in the storage tank,
Wherein the pressure of the reservoir tank is maintained at a pressure corresponding to the pressure to be supplied into the main cycle or higher than the inlet end pressure of the second pump and a part of the working fluid stored in the storage tank is supplied into the main cycle And a part of the working fluid stored in the storage tank is boosted to the turbo machine in the second pump and supplied to the turbo machine. 14. The method of claim 13,
And the second pump boosts the working fluid for the turbo machine to a pressure higher than the pressure of the working fluid supplied into the main cycle. 15. The method of claim 14,
Wherein the working fluid supplied to the turbo machine is supplied to the bearing system and the sealing system of the turbo machine. 14. The method of claim 13,
Wherein the working fluid stored in the storage tank is conveyed along a conveyance pipe and the conveyance pipe includes a first conveyance pipe connected to one side of the storage tank and a second conveyance pipe connected to the other side of the storage tank and the second pump A third conveyance pipe branched from the second conveyance pipe, and a fourth conveyance pipe connecting the first conveyance pipe and the third conveyance pipe. 17. The method of claim 16,
Further comprising a mass control tank or a heat engine connected to the storage tank by a discharge line for discharging the working fluid to the storage tank and the working fluid passing through the fourth transfer pipe is connected to the main cycle and the mass control tank And the heat engine is selectively supplied to any one of the heat engines. 18. The method of claim 17,
Wherein the first transfer pipe, the fourth transfer pipe, and the discharge line are provided with a valve for controlling the flow rate of the working fluid, and the fourth transfer pipe is provided with a three-way valve. 14. The method of claim 13,
Wherein the working fluid stored in the storage tank is conveyed along a conveyance pipe and the conveyance pipe includes a first conveyance pipe connected to one side of the storage tank and a second conveyance pipe connected to the other side of the storage tank and the second pump And a third conveyance pipe connected to the first conveyance pipe. 20. The method of claim 19,
Further comprising a mass control tank or a heat engine connected to the storage tank by a discharge line for discharging a working fluid to the storage tank and the working fluid passing through the third transfer pipe is connected to the main cycle and the mass control tank Wherein the first transfer pipe is provided with a valve for controlling the flow rate of the working fluid, and the third transfer pipe is provided with a three-way valve. Working fluid supply.
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