CN108119195B - Combined cycle power plant - Google Patents

Combined cycle power plant Download PDF

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Publication number
CN108119195B
CN108119195B CN201711334676.4A CN201711334676A CN108119195B CN 108119195 B CN108119195 B CN 108119195B CN 201711334676 A CN201711334676 A CN 201711334676A CN 108119195 B CN108119195 B CN 108119195B
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communicated
expander
evaporator
compressor
combined cycle
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CN108119195A (en
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李华玉
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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
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • 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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • 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
    • F01K7/02—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 being of multiple-expansion type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention provides a combined cycle power device, and belongs to the technical field of energy and power. The condenser is provided with a condensate pipeline which is communicated with the mixing evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixing evaporator, the mixing evaporator is also provided with a steam channel which is respectively communicated with the compressor and the second expander, the compressor is also provided with a steam channel which is communicated with the expander through a high-temperature heat exchanger, the condenser is also provided with a condensate pipeline which is communicated with the internal combustion engine through a second circulating pump, and then the internal combustion engine is also provided with a steam channel which is communicated with the second expander, and the second expander is also; the external part of the internal combustion engine is respectively provided with an air channel and a fuel channel which are communicated with the internal combustion engine, the internal combustion engine is also provided with a fuel gas channel which is communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel which is communicated with the external part, the mixed evaporator is also provided with a heat medium channel which is communicated with the external part, the expander is connected with the compressor and transmits power, and the expander, the second expander and the internal combustion engine are connected with the external part and.

Description

Combined cycle power plant
The technical field is as follows:
the invention belongs to the technical field of energy and power.
Background art:
cold demand, heat demand and power demand are common in human life and production. In the field of power demand technology, the conversion of thermal energy into mechanical energy is an important way to obtain and provide power. For high-quality fuel represented by gasoline, diesel and natural gas, a direct-combustion type gas-steam combined cycle with high thermal efficiency should be adopted; nevertheless, the thermal efficiency achieved is still not perfect, the fundamental reason being that-for each basic thermal power conversion technology, it has its own inherent advantages and disadvantages; these power plants are often very loaded and it is of great importance to increase their thermal efficiency.
In terms of a low-temperature discharge link, the steam power cycle has the best advantage, but the temperature difference loss of a heat transfer link is large when the variable-temperature heat source heat load is obtained; in terms of the acquisition link of high-temperature heat load, the internal combustion engine has unique circulating advantages, but the temperature difference loss of a circulating cooling medium and a fuel gas emission link is large. Therefore, the aim of improving the thermal efficiency of the high-quality fuel is to reduce the temperature difference loss when the steam power cycle acquires a high-temperature thermal load and effectively utilize the thermal load taken away by the circulating cooling medium of the internal combustion engine. Therefore, the invention provides the combined cycle power device which reserves the advantages of steam power cycle, overcomes the shortage of steam power cycle, effectively utilizes the cycle cooling heat load of the internal combustion engine and has higher heat efficiency.
The invention content is as follows:
the invention mainly aims to provide a combined cycle power plant, and the specific contents are set forth in the following sections:
1. the combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator and an internal combustion engine; the condenser is provided with a condensate pipeline which is communicated with the mixing evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixing evaporator, the mixing evaporator is also provided with a steam channel which is respectively communicated with the compressor and the second expander, the compressor is also provided with a steam channel which is communicated with the expander through a high-temperature heat exchanger, the condenser is also provided with a steam channel which is communicated with the second expander after the condensate pipeline is communicated with the internal combustion engine through the second circulating pump, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a fuel channel communicated with the internal combustion engine, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the mixing evaporator or the heat medium channel is also communicated with the external part, the expander is connected with the compressor and transmits power, and the expander, the second expander and the internal combustion engine are connected with the external part and output power to form a combined cycle power device.
2. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, an internal combustion engine and a second compressor; the condenser is provided with a condensate pipeline which is communicated with the mixing evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixing evaporator, the mixing evaporator is also provided with a steam channel which is respectively communicated with the compressor and the second expander, the compressor is also provided with a steam channel which is communicated with the expander through a high-temperature heat exchanger, the condenser is also provided with a steam channel which is communicated with the second expander after the condensate pipeline is communicated with the internal combustion engine through the second circulating pump, and the second expander is also provided with a steam channel which is communicated with the condenser; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a gaseous fuel channel communicated with the internal combustion engine through a second compressor, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the mixed evaporator or the heat medium channel is also communicated with the external part, the expander is connected with the compressor and transmits power, the internal combustion engine is connected with the second compressor and transmits power, and the expander, the second expander and the internal combustion engine are connected with the external part and outputs power to form a.
3. A combined cycle power plant, which is characterized in that a newly-added compressor and a newly-added high-temperature heat exchanger are added in any combined cycle power plant of items 1-2, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger to adjust that the compressor has the steam channel to be communicated with the newly-added compressor through the high-temperature heat exchanger, the newly-added compressor has the steam channel to be communicated with the expander through the newly-added high-temperature heat exchanger, a gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger to adjust that the internal combustion engine has the gas channel to be communicated with the outside through the newly-added high-temperature heat exchanger and the high-temperature heat exchanger, and the expander is.
4. A combined cycle power plant, in any one of the combined cycle power plants 1-2, a new expansion machine and a new high temperature heat exchanger are added, a steam channel of a compressor is communicated with the expansion machine through the high temperature heat exchanger and adjusted to be communicated with the compressor through the steam channel of the compressor and communicated with the new expansion machine through the high temperature heat exchanger, a steam channel of the new expansion machine is communicated with the expansion machine through the new high temperature heat exchanger, a gas channel of an internal combustion engine is communicated with the outside through the high temperature heat exchanger and adjusted to be communicated with the gas channel of the internal combustion engine and communicated with the outside through the new high temperature heat exchanger and the high temperature heat exchanger, and the new expansion machine is connected with the compressor and transmits power to form the combined cycle.
5. A combined cycle power device is characterized in that a heat regenerator is added in any one of the combined cycle power devices 1-2, a steam channel of a compressor is communicated with an expander through a high-temperature heat exchanger and is adjusted to be communicated with the compressor through the steam channel of the compressor and the heat regenerator and the high-temperature heat exchanger, and a steam channel of the expander and a mixed evaporator are communicated and adjusted to be communicated with the expander through the steam channel of the expander and the mixed evaporator through the heat regenerator, so that the combined cycle power device is formed.
6. A combined cycle power plant, which is characterized in that a heat regenerator is added in any combined cycle power plant in the item 3, a steam channel of a compressor is communicated with a newly added compressor through a high-temperature heat exchanger and is adjusted to be communicated with the newly added compressor through the heat regenerator and the high-temperature heat exchanger, a steam channel of an expander is communicated with a mixed evaporator through the heat regenerator and is adjusted to be communicated with the mixed evaporator through the steam channel of the expander, so that the combined cycle power plant is formed.
7. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device in the item 4, a steam channel of a compressor is communicated with a new expansion machine through a high-temperature heat exchanger and is adjusted to be communicated with the new expansion machine through the heat regenerator and the high-temperature heat exchanger, a steam channel of the expansion machine is communicated with a mixed evaporator through the heat regenerator, and the steam channel of the expansion machine is adjusted to be communicated with the mixed evaporator through the heat regenerator, so that the combined cycle power device is formed.
8. A combined cycle power device is characterized in that a third circulating pump and a mixed heat regenerator are added in any combined cycle power device 1-7, a condenser with a condensate pipeline communicated with a mixed evaporator through the circulating pump is adjusted to be a condenser with a condensate pipeline communicated with the mixed heat regenerator through the circulating pump, a second expander is additionally provided with a steam extraction channel communicated with the mixed heat regenerator, and the mixed heat regenerator is further provided with a condensate pipeline communicated with the mixed evaporator through the third circulating pump to form the combined cycle power device.
9. A combined cycle power plant, wherein a preheater is added in any one of the combined cycle power plants 1-7, a condenser with a condensate pipeline communicated with a mixing evaporator through a circulating pump is adjusted to be communicated with the mixing evaporator through the circulating pump and the preheater, and the preheater is also communicated with the outside through a heat medium channel to form the combined cycle power plant.
10. A combined cycle power plant, wherein an intermediate reheater is added to any one of the combined cycle power plants described in items 1 to 9, a hybrid evaporator and an internal combustion engine are respectively provided with a steam passage communicated with a second expander and a steam passage communicated with a condenser of the second expander, the hybrid evaporator and the internal combustion engine are adjusted to be respectively provided with a steam passage communicated with the second expander, the second expander is provided with an intermediate reheated steam passage communicated with the second expander through the intermediate reheater and the steam passage communicated with the condenser of the second expander, and the intermediate reheater is also provided with a heat medium passage communicated with the outside, so as to form the combined cycle power plant.
11. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, an internal combustion engine, a third circulating pump, a third expander and a medium-temperature evaporator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the second expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, the condenser is also provided with a condensate pipeline which is communicated with the internal combustion engine through the second circulating pump, the internal combustion engine is further provided with a steam channel which is communicated with the second expander, the second expander is also provided with a steam channel which is communicated with the condenser, the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a third circulating pump, the medium temperature evaporator is further provided with a steam channel which is communicated with a third; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a fuel channel communicated with the internal combustion engine, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the mixed evaporator or the heat medium channel is also communicated with the external part, the medium-temperature evaporator or the heat medium channel is also communicated with the external part, the expander is connected with the compressor and transmits power, and the expander, the second expander, the internal combustion engine and the third expander are connected with the external part and output power to form a.
12. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, an internal combustion engine, a second compressor, a third circulating pump, a third expander and a medium-temperature evaporator; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is respectively communicated with the compressor and the second expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, the condenser is also provided with a condensate pipeline which is communicated with the internal combustion engine through the second circulating pump, the internal combustion engine is further provided with a steam channel which is communicated with the second expander, the second expander is also provided with a steam channel which is communicated with the condenser, the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a third circulating pump, the medium temperature evaporator is further provided with a steam channel which is communicated with a third; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a gaseous fuel channel communicated with the internal combustion engine through a second compressor, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the condenser is also provided with a cooling medium channel communicated with the external part, the mixed evaporator or the heat medium channel is also communicated with the external part, the medium-temperature evaporator or the heat medium channel is also communicated with the external part, the expander is connected with the compressor and transmits power, the internal combustion engine is connected with the second compressor and transmits power, and the expander, the second expander, the internal combustion engine and the third expander are connected with the external part and.
13. A combined cycle power plant, wherein a newly-added compressor and a newly-added high-temperature heat exchanger are added in any combined cycle power plant of 11 th to 12 th, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger to adjust that the compressor is communicated with the newly-added compressor through the steam channel of the high-temperature heat exchanger, the newly-added compressor is communicated with the expander through the newly-added high-temperature heat exchanger, a gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger to adjust that the gas channel of the internal combustion engine is communicated with the outside through the newly-added high-temperature heat exchanger and the high-temperature heat exchanger, and the expander is connected with the newly-added compressor and transmits power.
14. A combined cycle power plant, wherein a new expansion machine and a new high temperature heat exchanger are added in any combined cycle power plant of 11 th to 12 th, a steam channel of a compressor is communicated with the expansion machine through the high temperature heat exchanger and adjusted to be communicated with the compressor through the steam channel of the compressor and communicated with the new expansion machine through the high temperature heat exchanger, a steam channel of the new expansion machine is communicated with the expansion machine through the new high temperature heat exchanger, a gas channel of an internal combustion engine is communicated with the outside through the high temperature heat exchanger and adjusted to be communicated with the gas channel of the internal combustion engine and communicated with the outside through the new high temperature heat exchanger and the high temperature heat exchanger, and the new expansion machine is connected with the compressor and transmits power to form the combined cycle.
15. A combined cycle power device is characterized in that a heat regenerator is added in any one of the combined cycle power devices of 11 th to 12 th, a steam channel of a compressor is communicated with an expander through a high-temperature heat exchanger and adjusted to be communicated with the compressor through the steam channel of the compressor and the heat regenerator and the high-temperature heat exchanger, a steam channel of the expander is communicated with a mixed evaporator through a medium-temperature evaporator and adjusted to be communicated with the mixed evaporator through the steam channel of the expander and the heat regenerator and the medium-temperature evaporator, and the combined cycle power device is formed.
16. A combined cycle power plant, wherein a heat regenerator is added in any one of the combined cycle power plants described in item 13, a steam channel of a compressor is communicated with a newly added compressor through a high-temperature heat exchanger and adjusted to be communicated with the newly added compressor through the steam channel of the compressor and the heat regenerator and the high-temperature heat exchanger, a steam channel of an expander is communicated with a mixed evaporator through a medium-temperature evaporator and adjusted to be communicated with the mixed evaporator through the steam channel of the expander and the heat regenerator and the medium-temperature evaporator, and the combined cycle power plant is formed.
17. A combined cycle power plant, wherein a heat regenerator is added in any one of the combined cycle power plants described in the item 14, a steam channel of a compressor is communicated with a new expansion machine through a high-temperature heat exchanger and adjusted to be communicated with the new expansion machine through the heat regenerator and the high-temperature heat exchanger, a steam channel of the expansion machine is communicated with a mixed evaporator through a medium-temperature evaporator and adjusted to be communicated with the mixed evaporator through the steam channel of the expansion machine and the heat regenerator and the medium-temperature evaporator, and the combined cycle power plant is formed.
18. A combined cycle power plant is characterized in that a fourth circulating pump, a fifth circulating pump, a mixed heat regenerator and a second mixed heat regenerator are added in any one of the combined cycle power plants 11-17, a condenser with a condensate pipeline is communicated with a mixed evaporator through the circulating pump and adjusted to be communicated with the mixed heat regenerator through the condenser with the condensate pipeline through the circulating pump, a middle temperature evaporator with a steam channel communicated with a third expander after the condenser with the condensate pipeline communicated with the middle temperature evaporator through the third circulating pump is adjusted to be communicated with the condenser with a condensate pipeline communicated with the second mixed heat regenerator through the third circulating pump, the third expander with an additional steam extraction channel communicated with the mixed heat regenerator, the mixed heat regenerator with a condensate pipeline communicated with the mixed evaporator through the fourth circulating pump, the second mixed heat regenerator with a condensate pipeline communicated with the middle temperature evaporator through the fifth circulating pump, and the middle temperature evaporator And the steam channel is communicated with the third expansion machine to form a combined cycle power plant.
19. A combined cycle power plant, wherein a preheater and a second preheater are added in any combined cycle power plant of items 11-17, a condenser with a condensate pipeline communicated with a mixed evaporator through a circulating pump is adjusted to be a condenser with a condensate pipeline communicated with the mixed evaporator through the circulating pump and the preheater, a middle temperature evaporator with a condensate pipeline communicated with a middle temperature evaporator through a third circulating pump is adjusted to be a condenser with a condensate pipeline communicated with a third expander through a third circulating pump and a second preheater with a condensate pipeline communicated with the middle temperature evaporator with a steam channel communicated with the third expander, and the preheater and the second preheater are respectively communicated with the outside through a heat medium channel to form the combined cycle power plant.
20. A combined cycle power plant, in any of the combined cycle power plants described in item 19, the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through the circulating pump and the preheater, and the condenser is provided with a condensate pipeline which is communicated with the medium temperature evaporator through the third circulating pump and the second preheater, and the condensate pipeline is adjusted into two paths after passing through the circulating pump and the preheater, wherein the first path is directly communicated with the mixed evaporator, and the second path is communicated with the medium temperature evaporator through the third circulating pump and the second preheater, so that the combined cycle power plant is formed.
21. A combined cycle power plant, wherein an intermediate reheater is added to any one of the combined cycle power plants described in items 11-20, a medium temperature evaporator is adjusted to have a steam passage communicated with a third expander and a steam passage of the third expander communicated with a condenser, the medium temperature evaporator has a steam passage communicated with the third expander, the third expander also has an intermediate reheater steam passage communicated with the third expander through the intermediate reheater and the third expander and a steam passage of the third expander also communicated with the condenser, and the intermediate reheater also has a heat medium passage communicated with the outside, thereby forming the combined cycle power plant.
22. A combined cycle power plant, wherein a second condenser is added in any one of the combined cycle power plants of items 11-21, a third expander is communicated with the condenser through a steam channel, the third expander is communicated with the second condenser through a steam channel, the condenser is communicated with a medium temperature evaporator through a third circulating pump through a condensate pipeline, the second condenser is communicated with the medium temperature evaporator through a third circulating pump through a condensate pipeline, and the second condenser is also communicated with the outside through a cooling medium channel to form the combined cycle power plant.
Description of the drawings:
FIG. 1 is a schematic 1 st thermodynamic system diagram of a combined cycle power plant according to the present invention.
FIG. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a combined cycle power plant provided in accordance with the present invention.
FIG. 3 is a schematic thermodynamic system diagram of the 3 rd principle of a combined cycle power plant provided in accordance with the present invention.
FIG. 4 is a diagram of a 4 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 5 is a diagram of a 5 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 6 is a 6 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 7 is a 7 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 8 is a diagram of an 8 th principle thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 9 is a diagram of a 9 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 10 is a 10 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 11 is a diagram of a principal 11 thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 12 is a 12 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 13 is a 13 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 14 is a 14 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 15 is a diagram of a 15 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 16 is a 16 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
FIG. 17 is a diagram of a 17 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 18 is a diagram of an 18 th principle thermodynamic system of a combined cycle power plant provided in accordance with the present invention.
FIG. 19 is a 19 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.
In the figure, 1-compressor, 2-expander, 3-second expander, 4-circulating pump, 5-second circulating pump, 6-high temperature heat exchanger, 7-condenser, 8-hybrid evaporator, 9-internal combustion engine, 10-second compressor, 11-regenerator, 12-third circulating pump, 13-hybrid regenerator, 14-preheater, 15-intermediate reheater, 16-third expander, 17-intermediate temperature evaporator, 18-fourth circulating pump, 19-fifth circulating pump, 20-second hybrid regenerator, 21-second preheater, 22-second condenser; a-newly adding a compressor, B-newly adding a high-temperature heat exchanger and C-newly adding an expansion machine.
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.
The combined cycle power plant of fig. 1 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixing evaporator and an internal combustion engine; the condenser 7 is provided with a condensate pipeline which is communicated with a mixing evaporator 8 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 8, the mixing evaporator 8 and the steam channel are respectively communicated with the compressor 1 and the second expander 3, the compressor 1 and the steam channel are communicated with the expander 2 through a high-temperature heat exchanger 6, the condenser 7 is also provided with a steam channel which is communicated with the internal combustion engine 9 through a second circulating pump 5, then the internal combustion engine 9 is provided with the steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with the steam channel which is communicated with the condenser 7; an air channel is arranged outside and communicated with an internal combustion engine 9, a fuel channel is also arranged outside and communicated with the internal combustion engine 9, the internal combustion engine 9 and a fuel gas channel are communicated with the outside through a high-temperature heat exchanger 6, a condenser 7 and a cooling medium channel are communicated with the outside, a mixing evaporator 8 and a heat medium channel are communicated with the outside, an expander 2 is connected with a compressor 1 and transmits power, and the expander 2, a second expander 3 and the internal combustion engine 9 are connected with the outside and outputs power.
(2) In the process, one path of condensate of the condenser 7 enters the mixing evaporator 8 after being boosted by the circulating pump 4, is mixed with steam from the expansion machine 2 and is vaporized after absorbing heat load provided by an external heat medium, and saturated steam or superheated steam released by the mixing evaporator 8 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, flows through the expander 2 and enters the hybrid evaporator 8 to release heat and reduce the temperature after being decompressed and worked; the other path of condensate of the condenser 7 is boosted by the second circulating pump 5 and then is supplied to the internal combustion engine 9 to be used as circulating cooling liquid, and enters the second expansion machine 3 to reduce the pressure and do work after absorbing heat and vaporizing; the steam discharged from the second expander 3 enters a condenser 7, releases heat to a cooling medium and is condensed; external fuel and air enter the internal combustion engine 9, a series of processes including combustion and expansion are completed in a cylinder of the internal combustion engine 9, and fuel gas discharged by the internal combustion engine 9 passes through the high-temperature heat exchanger 6 to release heat and is discharged to the outside; the fuel provides driving heat load through combustion, the heat medium-fuel gas after flowing through the high-temperature heat exchanger 6, other heat sources or heat source media capable of providing heat load-provide driving heat load through the mixing evaporator 8, the cooling medium takes away low-temperature heat load through the condenser 7, a part of work output by the expander 2 is provided for the compressor 1 as power, and the expander 2, the second expander 3 and the internal combustion engine 9 jointly provide power for the outside, so that the combined cycle power device is formed.
The combined cycle power plant of fig. 2 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixing evaporator, an internal combustion engine and a second compressor; the condenser 7 is provided with a condensate pipeline which is communicated with a mixing evaporator 8 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 8, the mixing evaporator 8 and the steam channel are respectively communicated with the compressor 1 and the second expander 3, the compressor 1 and the steam channel are communicated with the expander 2 through a high-temperature heat exchanger 6, the condenser 7 is also provided with a steam channel which is communicated with the internal combustion engine 9 through a second circulating pump 5, then the internal combustion engine 9 is provided with the steam channel which is communicated with the second expander 3, and the second expander 3 is also provided with the steam channel which is communicated with the condenser 7; an air channel is arranged outside and communicated with an internal combustion engine 9, a gaseous fuel channel is also arranged outside and communicated with the internal combustion engine 9 through a second compressor 10, the internal combustion engine 9 and a fuel gas channel are also communicated with the outside through a high-temperature heat exchanger 6, a condenser 7 and a cooling medium channel are also communicated with the outside, a mixing evaporator 8 and a heat medium channel are also communicated with the outside, an expander 2 is connected with the compressor 1 and transmits power, the internal combustion engine 9 is connected with the second compressor 10 and transmits power, and the expander 2, the second expander 3 and the internal combustion engine 9 are connected with the outside and outputs power.
(2) In the process, one path of condensate of the condenser 7 enters the mixing evaporator 8 after being boosted by the circulating pump 4, is mixed with steam from the expansion machine 2 and is vaporized after absorbing heat load provided by an external heat medium, and saturated steam or superheated steam released by the mixing evaporator 8 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, flows through the expander 2 and enters the hybrid evaporator 8 to release heat and reduce the temperature after being decompressed and worked; the other path of condensate of the condenser 7 is boosted by the second circulating pump 5 and then is supplied to the internal combustion engine 9 to be used as circulating cooling liquid, and enters the second expansion machine 3 to reduce the pressure and do work after absorbing heat and vaporizing; the steam discharged from the second expander 3 enters a condenser 7, releases heat to a cooling medium and is condensed; the external air enters the internal combustion engine 9, the external gaseous fuel enters the internal combustion engine 9 after being pressurized by the second compressor 10, the air and the fuel complete a series of processes including combustion and expansion in a cylinder of the internal combustion engine 9, and the fuel gas discharged by the internal combustion engine 9 passes through the high-temperature heat exchanger 6 to release heat and is discharged; the fuel provides driving heat load through combustion, the heat medium-fuel gas after flowing through the high-temperature heat exchanger 6, other heat sources or heat source media capable of providing heat load-provide driving heat load through the mixing evaporator 8, the cooling medium takes away low-temperature heat load through the condenser 7, a part of work output by the expansion machine 2 is provided for the compressor 1 as power, a part of work output by the internal combustion engine 9 is provided for the second compressor 10 as power, and the expansion machine 2, the second expansion machine 3 and the internal combustion engine 9 jointly provide power to the outside to form a combined cycle power device.
The combined cycle power plant of fig. 3 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 1, a newly added compressor and a newly added high-temperature heat exchanger are added, a steam channel of the compressor 1 is communicated with the expander 2 through the high-temperature heat exchanger 6 and adjusted to be a steam channel of the compressor 1 which is communicated with the newly added compressor A through the high-temperature heat exchanger 6, a steam channel of the newly added compressor A is communicated with the expander 2 through the newly added high-temperature heat exchanger B, a gas channel of the internal combustion engine 9 is communicated with the outside through the high-temperature heat exchanger 6 and adjusted to be a gas channel of the internal combustion engine 9 which is communicated with the outside through the newly added high-temperature heat exchanger B and the high-temperature heat exchanger 6, and the expander.
(2) Compared with the circulation flow of the combined cycle power plant shown in the figure 1, the difference of the flow is that the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, and then enters the newly-added compressor A to increase the pressure and the temperature; the steam discharged by the newly-added compressor A flows through the newly-added high-temperature heat exchanger B and absorbs heat, and then enters the expander 2 to reduce the pressure and do work; the gas discharged by the internal combustion engine 9 passes through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 6 to gradually release heat and is discharged to the outside, and the expander 2 provides power for the newly-added compressor A to form a combined cycle power device.
The combined cycle power plant of fig. 4 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 1, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of a compressor 1 is communicated with an expansion machine 2 through the high-temperature heat exchanger 6 and adjusted to be a steam channel of the compressor 1 which is communicated with a new expansion machine C through the high-temperature heat exchanger 6, a steam channel of the new expansion machine C is communicated with the expansion machine 2 through the new high-temperature heat exchanger B, a gas channel of an internal combustion engine 9 is communicated with the outside through the high-temperature heat exchanger 6 and adjusted to be a gas channel of the internal combustion engine 9 which is communicated with the outside through the new high-temperature heat exchanger B and the high-temperature heat exchanger 6, and the new expansion machine C is connected.
(2) Compared with the circulation flow of the combined cycle power plant shown in the figure 1, the difference of the flow is that the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, and then enters the new expansion machine C to reduce the pressure and do work; the steam discharged by the newly-increased expansion machine C flows through the newly-increased high-temperature heat exchanger B and absorbs heat, and then enters the expansion machine 2 to reduce the pressure and do work; the gas discharged by the internal combustion engine 9 is gradually released and discharged through the newly added high-temperature heat exchanger B and the high-temperature heat exchanger 6, and the work output by the newly added expansion machine C is provided for the compressor 1 as power to form a combined cycle power device.
The combined cycle power plant of fig. 5 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 1, a heat regenerator is added, a steam channel of the compressor 1 is communicated with the expander 2 through the high-temperature heat exchanger 6 and adjusted to be that the steam channel of the compressor 1 is communicated with the expander 2 through the heat regenerator 11 and the high-temperature heat exchanger 6, and a steam channel of the expander 2 is communicated with the hybrid evaporator 8 and adjusted to be that the steam channel of the expander 2 is communicated with the hybrid evaporator 8 through the heat regenerator 11.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 1, the difference in the flow is that the steam discharged from the compressor 1 flows through the heat regenerator 11 and the high temperature heat exchanger 6 and gradually absorbs heat, flows through the expander 2 and reduces pressure to do work, flows through the heat regenerator 11 to release heat, and then enters the hybrid evaporator 8 to form the combined cycle power plant.
The combined cycle power plant of fig. 6 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 3, a heat regenerator is added, a steam channel of the compressor 1 is communicated with the newly added compressor a through the high-temperature heat exchanger 6 and adjusted to be that the steam channel of the compressor 1 is communicated with the newly added compressor a through the heat regenerator 11 and the high-temperature heat exchanger 6, and a steam channel of the expander 2 is communicated with the mixed evaporator 8 and adjusted to be that the steam channel of the expander 2 is communicated with the mixed evaporator 8 through the heat regenerator 11.
(2) Compared with the circulation flow of the combined cycle power plant shown in FIG. 3, the difference is that the steam discharged from the compressor 1 flows through the heat regenerator 11 and the high-temperature heat exchanger 6 and gradually absorbs heat and increases temperature, and then is supplied to the newly added compressor A; the steam discharged by the expander 2 flows through the heat regenerator 11 to release heat and reduce temperature, and then enters the hybrid evaporator 8 to form a combined cycle power device.
The combined cycle power plant of fig. 7 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 1, a third circulating pump and a hybrid heat regenerator are added, a condensate pipeline of a condenser 7 is communicated with a hybrid evaporator 8 through a circulating pump 4, the condensate pipeline of the condenser 7 is communicated with the hybrid heat regenerator 13 through the circulating pump 4, a steam extraction channel is additionally arranged on a second expansion machine 3 and is communicated with the hybrid heat regenerator 13, and the hybrid heat regenerator 13 is communicated with the hybrid evaporator 8 through a condensate pipeline of the third circulating pump 12.
(2) Compared with the circulation flow of the combined cycle power device shown in fig. 1, the difference in the flow is that the condensate of the condenser 7 enters the mixed heat regenerator 13 after being boosted by the circulating pump 4, the steam entering the second expander 3 is decompressed and does work to a certain pressure and then is divided into two paths, the first path continues to be decompressed and does work and enters the condenser 7, the second path enters the mixed heat regenerator 13 through the steam extraction channel to be mixed with the condensate for heat release and condensation, and the condensate of the mixed heat regenerator 13 enters the mixed evaporator 8 after being boosted by the third circulating pump 12 to form the combined cycle power device.
The combined cycle power plant of fig. 8 is implemented as follows:
in the combined cycle power plant shown in fig. 1, a preheater is added, a condensate pipeline of the condenser 7 is communicated with the mixing evaporator 8 through the circulating pump 4, and is adjusted to be that the condensate pipeline of the condenser 7 is communicated with the mixing evaporator 8 through the circulating pump 4 and the preheater 14, and the preheater 14 is also communicated with the outside through a heat medium channel; the condensate of the condenser 7 enters the mixing evaporator 8 after being boosted by the circulating pump 4 and heated by the preheater 14, thus forming a combined cycle power plant.
The combined cycle power plant of fig. 9 is implemented as follows:
in the combined cycle power plant shown in fig. 1, an intermediate reheater is added, the mixed evaporator 8 and the internal combustion engine 9 are respectively provided with a steam passage to communicate with the second expander 3 and the second expander 3 is provided with a steam passage to communicate with the condenser 7, and the mixed evaporator 8 and the internal combustion engine 9 are respectively provided with a steam passage to communicate with the second expander 3, the second expander 3 is provided with an intermediate reheated steam passage to communicate with the second expander 3 through the intermediate reheater 15 and the second expander 3 is provided with a steam passage to communicate with the condenser 7, and the intermediate reheater 15 is further provided with a heat medium passage to communicate with the outside; when the steam entering the second expansion machine 3 is decompressed and does work to a certain pressure, all the steam is led out and flows through the intermediate reheated steam channel to flow through the intermediate reheater 15 to absorb heat and raise temperature, then enters the second expansion machine 3 to be decompressed and does work continuously, and then enters the condenser 7 to release heat and condense to form the combined cycle power device.
The combined cycle power plant of fig. 10 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixing evaporator, an internal combustion engine, a third circulating pump, a third expander and a medium-temperature evaporator; the condenser 7 is provided with a condensate pipeline which is communicated with a mixed evaporator 8 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 8 through a medium temperature evaporator 17, the mixed evaporator 8 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high temperature heat exchanger 6, the condenser 7 is also provided with a condensate pipeline which is communicated with the internal combustion engine 9 through a second circulating pump 5, then the internal combustion engine 9 is provided with a steam channel which is communicated with the second expander 3, the second expander 3 is also provided with a steam channel which is communicated with the condenser 7, the condenser 7 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 17 through a third circulating pump 12, then the medium temperature evaporator 17 is provided with a steam channel which is communicated with a third expander 16, and the third; an air channel is arranged outside and communicated with an internal combustion engine 9, a fuel channel is also arranged outside and communicated with the internal combustion engine 9, the internal combustion engine 9 and a fuel gas channel are communicated with the outside through a high-temperature heat exchanger 6, a condenser 7 and a cooling medium channel are communicated with the outside, an expander 2 is connected with a compressor 1 and transmits power, and the expander 2, a second expander 3, the internal combustion engine 9 and a third expander 16 are connected with the outside and outputs power.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 17 and releases heat and cools, and then enters the mixing evaporator 8 to be mixed with condensate from the condenser 7 and releases heat and cools; the condensate of the condenser 7 is divided into three paths, wherein the first path is pressurized by the circulating pump 4 and enters the mixing evaporator 8 to absorb heat and vaporize, the second path is pressurized by the second circulating pump 5 and then is supplied to the internal combustion engine 9 to be used as circulating cooling liquid, absorbs heat and vaporizes and then is supplied to the second expansion machine 3, and the third path is pressurized by the third circulating pump 12 and enters the medium temperature evaporator 17 to absorb heat and vaporize; the steam released by the mixed evaporator 8 enters the compressor 1 to be pressurized, heated and supplied to the second expander 3 respectively; the steam flows through the second expander 3 to reduce pressure and do work, and then enters the condenser 7 to release heat and condense; the steam released by the medium temperature evaporator 17 flows through the third expansion machine 16 to reduce the pressure and do work, and then enters the condenser 7 to release heat and condense; external fuel and air enter the internal combustion engine 9, a series of processes including combustion and expansion are completed in a cylinder of the internal combustion engine 9, and fuel gas discharged by the internal combustion engine 9 passes through the high-temperature heat exchanger 6 to release heat and is discharged to the outside; the fuel provides driving heat load through combustion, the cooling medium takes away low-temperature heat load through the condenser 7, a part of work output by the expansion machine 2 is provided for the compressor 1 to be used as power, and the expansion machine 2, the second expansion machine 3, the internal combustion engine 9 and the third expansion machine 16 jointly provide power outwards to form a combined cycle power device.
The combined cycle power plant of fig. 11 is implemented as follows:
(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixing evaporator, an internal combustion engine, a second compressor, a third circulating pump, a third expander and a medium-temperature evaporator; the condenser 7 is provided with a condensate pipeline which is communicated with a mixed evaporator 8 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixed evaporator 8 through a medium temperature evaporator 17, the mixed evaporator 8 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high temperature heat exchanger 6, the condenser 7 is also provided with a condensate pipeline which is communicated with the internal combustion engine 9 through a second circulating pump 5, then the internal combustion engine 9 is provided with a steam channel which is communicated with the second expander 3, the second expander 3 is also provided with a steam channel which is communicated with the condenser 7, the condenser 7 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 17 through a third circulating pump 12, then the medium temperature evaporator 17 is provided with a steam channel which is communicated with a third expander 16, and the third; an air channel is arranged outside and communicated with an internal combustion engine 9, a gaseous fuel channel is also arranged outside and communicated with the internal combustion engine 9 through a second compressor 10, the internal combustion engine 9 and a fuel gas channel are also communicated with the outside through a high-temperature heat exchanger 6, a condenser 7 and a cooling medium channel are also communicated with the outside, a mixing evaporator 8 and a medium-temperature evaporator 17 are also respectively communicated with the outside through a heat medium channel, an expander 2 is connected with the compressor 1 and transmits power, the internal combustion engine 9 is connected with the second compressor 10 and transmits power, and the expander 2, the second expander 3, the internal combustion engine 9 and a third expander 16 are connected with the outside and output power.
(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, flows through the expander 2 and performs decompression work, flows through the medium-temperature evaporator 17 and releases heat and cools, and then enters the mixing evaporator 8 to be mixed with condensate from the condenser 7 and releases heat and cools; the condensate of the condenser 7 is divided into three paths, wherein the first path is pressurized by the circulating pump 4 and enters the mixing evaporator 8 to absorb heat and vaporize, the second path is pressurized by the second circulating pump 5 and then is supplied to the internal combustion engine 9 to be used as circulating cooling liquid, absorbs heat and vaporizes and then is supplied to the second expansion machine 3, and the third path is pressurized by the third circulating pump 12 and enters the medium temperature evaporator 17 to absorb heat and vaporize; the steam released by the mixed evaporator 8 enters the compressor 1 to be pressurized, heated and supplied to the second expander 3 respectively; the steam flows through the second expander 3 to reduce pressure and do work, and then enters the condenser 7 to release heat and condense; the steam released by the medium temperature evaporator 17 flows through the third expansion machine 16 to reduce the pressure and do work, and then enters the condenser 7 to release heat and condense; the external air enters the internal combustion engine 9, the external gaseous fuel enters the internal combustion engine 9 after being pressurized by the second compressor 10, the air and the fuel complete a series of processes including combustion and expansion in a cylinder of the internal combustion engine 9, and the fuel gas discharged by the internal combustion engine 9 passes through the high-temperature heat exchanger 6 to release heat and is discharged; the fuel provides driving heat load through combustion, the heat medium-fuel gas after flowing through the high-temperature heat exchanger 6, other heat sources or heat source media capable of providing heat load-provide driving heat load through the mixing evaporator 8 and the medium-temperature evaporator 17, the cooling medium takes away the low-temperature heat load through the condenser 7, a part of work output by the expansion machine 2 is provided for the compressor 1 as power, a part of work output by the internal combustion engine 9 is provided for the second compressor 10 as power, and the expansion machine 2, the second expansion machine 3, the third expansion machine 16 and the internal combustion engine 9 jointly provide power for the outside to form a combined cycle power device.
The combined cycle power plant of fig. 12 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 10, a newly added compressor and a newly added high temperature heat exchanger are added, a steam channel of the compressor 1 is communicated with the expander 2 through the high temperature heat exchanger 6 and adjusted to be a steam channel of the compressor 1 which is communicated with the newly added compressor a through the high temperature heat exchanger 6, a steam channel of the newly added compressor a is communicated with the expander 2 through the newly added high temperature heat exchanger B, a gas channel of the internal combustion engine 9 is communicated with the outside through the high temperature heat exchanger 6 and adjusted to be a gas channel of the internal combustion engine 9 which is communicated with the outside through the newly added high temperature heat exchanger B and the high temperature heat exchanger 6, and the expander 2 is connected with the newly added.
(2) Compared with the circulation flow of the combined cycle power plant shown in FIG. 10, the difference is that the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 6 and absorbs heat, and then enters the newly-added compressor A to increase the pressure and the temperature; the steam discharged by the newly-added compressor A flows through the newly-added high-temperature heat exchanger B and absorbs heat, and then enters the expander 2 to reduce the pressure and do work; the gas discharged by the internal combustion engine 9 is discharged to the outside after gradually releasing heat through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 6, and the expander 2 provides power for the newly-added compressor A to form a combined cycle power device.
The combined cycle power plant of fig. 13 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 10, a heat regenerator is added, a steam channel of the compressor 1 is communicated with the expander 2 through the high-temperature heat exchanger 6 and adjusted to be that the steam channel of the compressor 1 is communicated with the expander 2 through the heat regenerator 11 and the high-temperature heat exchanger 6, and a steam channel of the expander 2 is communicated with the hybrid evaporator 8 through the medium-temperature evaporator 17 and adjusted to be that the steam channel of the expander 2 is communicated with the hybrid evaporator 8 through the heat regenerator 11 and the medium-temperature evaporator 17.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 10, the difference in the flow is that the steam discharged from the compressor 1 flows through the heat regenerator 11 and the high temperature heat exchanger 6 and gradually absorbs heat, flows through the expander 2 and reduces pressure to do work, flows through the heat regenerator 11 and the medium temperature evaporator 17 and gradually releases heat, and then enters the hybrid evaporator 8 to form the combined cycle power plant.
The combined cycle power plant of fig. 14 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 10, a regenerator is added, the method comprises the steps of communicating a steam channel of a compressor 1 with an expander 2 through a high-temperature heat exchanger 6, adjusting the communication of the steam channel of the compressor 1 with a new expander C through a heat regenerator 11 and the high-temperature heat exchanger 6, communicating a steam channel of the new expander C with the expander 2 through a new high-temperature heat exchanger B, communicating a steam channel of the expander 2 with a mixed evaporator 8 through a medium-temperature evaporator 17, adjusting the communication of the steam channel of the expander 2 with the mixed evaporator 8 through the heat regenerator 11 and the medium-temperature evaporator 17, communicating a gas channel of an internal combustion engine 9 with the outside through the high-temperature heat exchanger 6, adjusting the communication of the gas channel of the internal combustion engine 9 with the outside through the high-temperature heat exchanger 6, communicating the gas channel of the internal combustion engine 9 with the outside through the new high-temperature heat exchanger B and the high-temperature heat.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 10, the difference is that the steam discharged by the compressor 1 flows through the heat regenerator 11 and the high-temperature heat exchanger 6 and gradually absorbs heat, and then enters the new expansion machine C to reduce the pressure and do work; the steam discharged by the newly-increased expansion machine C flows through the newly-increased high-temperature heat exchanger B and absorbs heat, and then enters the expansion machine 2 to reduce the pressure and do work; steam discharged by the expansion machine 2 flows through the heat regenerator 11 and the medium-temperature evaporator 17 to gradually release heat, and then enters the mixed evaporator 8; the work output by the new expansion machine C is provided for the compressor 1 as power (or provided externally), and the fuel gas discharged by the internal combustion engine 9 flows through the new high-temperature heat exchanger B and the high-temperature heat exchanger 6 to gradually release heat and is discharged externally, so that a combined cycle power device is formed.
The combined cycle power plant of fig. 15 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 10, a fourth circulating pump, a fifth circulating pump, a mixed heat regenerator and a second mixed heat regenerator are added, a condensate pipeline of a condenser 7 is communicated with a mixed evaporator 8 through a circulating pump 4 and is adjusted to be that the condenser 7 is provided with a condensate pipeline which is communicated with the mixed heat regenerator 13 through the circulating pump 4, the condenser 7 is provided with a condensate pipeline which is communicated with a medium temperature evaporator 17 through a third circulating pump 12, then the medium temperature evaporator 17 is provided with a steam channel which is communicated with a third expansion machine 16, the condenser 7 is provided with a condensate pipeline which is communicated with the second mixed heat regenerator 20 through the third circulating pump 12, the third expansion machine 16 is additionally provided with a steam extraction channel which is communicated with the mixed heat regenerator 13, the third expansion machine 16 is additionally provided with a second steam extraction channel which is communicated with the second mixed heat regenerator 20, the mixed heat regenerator 13 is also provided with a condensate pipeline which is communicated with the mixed evaporator 8 through, the second hybrid heat regenerator 20 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 17 through a fifth circulating pump 19, and then the medium temperature evaporator 17 is communicated with the third expander 16 through a steam channel.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 10, the difference is that the condensate after being boosted by the circulation pump 4 enters the mixing heat regenerator 13, and the condensate after being boosted by the third circulation pump 12 enters the second mixing heat regenerator 20; the steam entering the third expander 16 is decompressed and works to a certain pressure, and then is divided into three paths, wherein the first path is continuously decompressed and works and enters the condenser 7, the second path enters the mixing heat regenerator 13 through the steam extraction channel to be mixed with the condensate for heat release and condensation, and the third path enters the second mixing heat regenerator 20 through the second steam extraction channel to be mixed with the condensate for heat release and condensation; the condensate of the mixing heat regenerator 13 is boosted by a fourth circulating pump 18 and then enters the mixing evaporator 8, and the condensate of the second mixing heat regenerator 20 is boosted by a fifth circulating pump 19 and then enters the medium temperature evaporator 17, so that the combined cycle power device is formed.
The combined cycle power plant of fig. 16 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 10, a preheater and a second preheater are added, a condensate pipeline of the condenser 7 is communicated with the mixing evaporator 8 through the circulating pump 4, and is adjusted to be communicated with the mixing evaporator 8 through the circulating pump 4 and the preheater 14, a steam channel of the medium temperature evaporator 17 is communicated with the third expander 16 after the condensate pipeline of the condenser 7 is communicated with the medium temperature evaporator 17 through the third circulating pump 12, and is adjusted to be communicated with the medium temperature evaporator 17 after the condensate pipeline of the condenser 7 is communicated with the medium temperature evaporator 17 through the third circulating pump 12 and the second preheater 21, a steam channel of the medium temperature evaporator 17 is communicated with the third expander 16, and the preheater 14 and the second preheater 21 are also communicated with the outside through a heat medium channel, respectively.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 10, the difference in the flow is that the first path of condensate of the condenser 7 enters the mixing evaporator 8 after being boosted by the circulating pump 4 and heated by the preheater 14, and the third path of condensate of the condenser 7 enters the medium temperature evaporator 17 after being boosted by the third circulating pump 12 and heated by the second preheater 21, so as to form the combined cycle power plant.
The combined cycle power plant of fig. 17 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 16, the condenser 7 is provided with a condensate pipeline which is communicated with the mixed evaporator 8 through the circulating pump 4 and the preheater 14, and the condenser 7 is provided with a condensate pipeline which is communicated with the medium temperature evaporator 17 through the third circulating pump 12 and the second preheater 21, and the two pipelines are adjusted together to be divided into two paths after the condenser 7 is provided with a condensate pipeline which is communicated with the mixed evaporator 8 through the circulating pump 4 and the preheater 14, wherein the first path is directly communicated with the mixed evaporator 8, and the second path is communicated with the medium temperature evaporator 17 through the third circulating pump 12 and the second preheater 21.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 16, the difference in the flow is that part of the condensate of the condenser 7 is divided into two paths after passing through the circulating pump 4 for pressure increase and passing through the preheater 14 for heat absorption and temperature increase, the first path directly enters the mixing evaporator 8, and the second path enters the medium temperature evaporator 17 after passing through the third circulating pump 12 for pressure increase and passing through the second preheater 21 for heat absorption and temperature increase, so as to form the combined cycle power plant.
The combined cycle power plant of fig. 18 is implemented as follows:
in the combined cycle power plant shown in fig. 10, an intermediate reheater is added, and the intermediate temperature evaporator 17 having a steam passage communicating with the third expander 16 and the third expander 16 having a steam passage communicating with the condenser 7 are adjusted such that the intermediate temperature evaporator 17 having a steam passage communicating with the third expander 16, the third expander 16 having an intermediate reheater steam passage communicating with the third expander 16 via the intermediate reheater 15 and the third expander 16 having a steam passage communicating with the condenser 7, and the intermediate reheater 15 having a heat medium passage communicating with the outside; when the steam entering the third expansion machine 16 reduces the pressure and works to a certain pressure, the steam is completely led out and flows through the intermediate reheater 15 through the intermediate reheated steam channel to absorb heat and raise the temperature, then enters the third expansion machine 16 to continue reducing the pressure and work, and then enters the condenser 7 to release heat and condense to form the combined cycle power device.
The combined cycle power plant of fig. 19 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 10, a second condenser is added, the third expander 16 having a steam passage is adjusted to communicate with the condenser 7, the third expander 16 having a steam passage to communicate with the second condenser 22, the condenser 7 having a condensate line to communicate with the medium temperature evaporator 17 via the third circulation pump 12 is adjusted to communicate with the second condenser 22 having a condensate line to communicate with the medium temperature evaporator 17 via the third circulation pump 12, and the second condenser 22 having a coolant passage to communicate with the outside.
(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 10, the difference in the flow is that the steam discharged from the third expander 16 enters the second condenser 22 to release heat to the cooling medium and condense, the condensate of the second condenser 22 flows through the third circulation pump 12 to increase the pressure, flows through the medium temperature evaporator 17 to absorb heat and vaporize, and then enters the third expander 16 to reduce the pressure and do work, thereby forming the combined cycle power plant.
The effect that the technology of the invention can realize-the combined cycle power device provided by the invention has the following effects and advantages:
(1) the cooling heat load of the internal combustion engine is effectively utilized, the heat loss of emission is reduced, and the heat efficiency is improved.
(2) The original basic advantages of steam power cycle are kept, and the loss of the low-temperature heat load discharge link is small.
(3) The temperature difference loss of a high-temperature heating link of steam power circulation is reduced, and the heat efficiency is effectively improved.
(4) The grading circulation realizes reasonable utilization of temperature difference, reduces irreversible loss of heat transfer and improves heat efficiency.
(5) The high-temperature thermal load is utilized step by step, the flow is reasonable, the links are few, and the thermal efficiency is improved.
(6) The two circulation working mediums realize combined circulation, reduce heat transfer links and reduce operation cost.
(7) On the premise of realizing high thermal efficiency, the steam power circulation pressure is reduced, and the running safety of the device is improved.
(8) The power application value of high-quality fuel is exerted to the maximum extent, efficient utilization is realized, and adverse effects on the environment are reduced.

Claims (22)

1. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator and an internal combustion engine; the condenser (7) is provided with a condensate pipeline which is communicated with the mixing evaporator (8) through a circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (8), the mixing evaporator (8) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (6), the condenser (7) is also provided with a condensate pipeline which is communicated with the internal combustion engine (9) through a second circulating pump (5), then the internal combustion engine (9) is provided with a steam channel which is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (7); the external part is provided with an air channel communicated with an internal combustion engine (9), the external part is also provided with a fuel channel communicated with the internal combustion engine (9), the internal combustion engine (9) is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger (6), a condenser (7) is also provided with a cooling medium channel communicated with the external part, a mixing evaporator (8) or a heat medium channel is also communicated with the external part, an expander (2) is connected with a compressor (1) and transmits power, and the expander (2), a second expander (3) and the internal combustion engine (9) are connected with the external part and output power, so that a combined cycle power device is.
2. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, an internal combustion engine and a second compressor; the condenser (7) is provided with a condensate pipeline which is communicated with the mixing evaporator (8) through a circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (8), the mixing evaporator (8) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (6), the condenser (7) is also provided with a condensate pipeline which is communicated with the internal combustion engine (9) through a second circulating pump (5), then the internal combustion engine (9) is provided with a steam channel which is communicated with the second expander (3), and the second expander (3) is also provided with a steam channel which is communicated with the condenser (7); the external part is provided with an air passage communicated with an internal combustion engine (9), the external part is also provided with a gaseous fuel passage communicated with the internal combustion engine (9) through a second compressor (10), the internal combustion engine (9) is also provided with a fuel gas passage communicated with the external part through a high-temperature heat exchanger (6), a condenser (7) is also provided with a cooling medium passage communicated with the external part, a hybrid evaporator (8) or a heat medium passage is also communicated with the external part, an expander (2) is connected with the compressor (1) and transmits power, the internal combustion engine (9) is connected with the second compressor (10) and transmits power, and the expander (2), the second expander (3) and the internal combustion engine (9) are connected with the external part and outputs power to form a combined.
3. A combined cycle power plant as claimed in any one of claims 1 to 2, a newly-added compressor and a newly-added high-temperature heat exchanger are added, a steam channel of the compressor (1) is communicated with an expander (2) through the high-temperature heat exchanger (6) and adjusted to be that the compressor (1) is communicated with a steam channel of the newly-added compressor (A) through the high-temperature heat exchanger (6), the newly-added compressor (A) is communicated with the expander (2) through the newly-added high-temperature heat exchanger (B), a gas channel of an internal combustion engine (9) is communicated with the outside through the high-temperature heat exchanger (6) and adjusted to be that the internal combustion engine (9) is communicated with the outside through the newly-added high-temperature heat exchanger (B) and the high-temperature heat exchanger (6), and the expander (2) is connected with the newly-added compressor (A) and transmits power to.
4. A combined cycle power plant as claimed in any one of claims 1 to 2, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of a compressor (1) is communicated with an expansion machine (2) through a high-temperature heat exchanger (6) and adjusted to be that the compressor (1) is communicated with a steam channel of a new expansion machine (C) through the high-temperature heat exchanger (6), the steam channel of the new expansion machine (C) is communicated with the expansion machine (2) through the new high-temperature heat exchanger (B), a gas channel of an internal combustion engine (9) is communicated with the outside through the high-temperature heat exchanger (6) and adjusted to be that the internal combustion engine (9) is communicated with the outside through the new high-temperature heat exchanger (B) and the high-temperature heat exchanger (6), and the new expansion machine (C) is connected with the compressor (1) and transmits power to form a combined cycle power device.
5. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device of claims 1-2, a steam channel of a compressor (1) is communicated with an expander (2) through a high-temperature heat exchanger (6) and is adjusted to be communicated with the expander (2) through the heat regenerator (11) and the high-temperature heat exchanger (6), a steam channel of the expander (2) is communicated with a mixed evaporator (8) and is adjusted to be communicated with the expander (2) through the steam channel of the expander (2) and the mixed evaporator (8) through the heat regenerator (11), and the combined cycle power device is formed.
6. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device of claim 3, a steam channel of a compressor (1) is communicated with a newly added compressor (A) through a high-temperature heat exchanger (6) and is adjusted to be communicated with the newly added compressor (A) through the heat regenerator (11) and the high-temperature heat exchanger (6), a steam channel of an expander (2) is communicated with a mixed evaporator (8) and is adjusted to be communicated with the mixed evaporator (8) through the steam channel of the expander (2) and is communicated with the mixed evaporator (8) through the heat regenerator (11), and the combined cycle power device is formed.
7. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device of claim 4, a steam channel of a compressor (1) is communicated with a new expansion machine (C) through a high-temperature heat exchanger (6) and is adjusted to be communicated with the new expansion machine (C) through the heat regenerator (11) and the high-temperature heat exchanger (6), a steam channel of an expander (2) is communicated with a mixed evaporator (8) and is adjusted to be communicated with the mixed evaporator (8) through the steam channel of the expander (2) and is communicated with the mixed evaporator (8) through the heat regenerator (11), and the combined cycle power device is formed.
8. A combined cycle power device is characterized in that a third circulating pump and a mixed heat regenerator are added in the combined cycle power device according to any one of claims 1 to 7, a condenser (7) is provided with a condensate pipeline which is communicated with a mixed evaporator (8) through a circulating pump (4) and is adjusted to be that the condenser (7) is provided with a condensate pipeline which is communicated with the mixed heat regenerator (13) through the circulating pump (4), a second expansion machine (3) is additionally provided with a steam extraction channel which is communicated with the mixed heat regenerator (13), and the mixed heat regenerator (13) is further provided with a condensate pipeline which is communicated with the mixed evaporator (8) through the third circulating pump (12), so that the combined cycle power device is formed.
9. A combined cycle power plant, which is characterized in that a preheater is added in the combined cycle power plant of any one of claims 1 to 7, a condensate pipeline of a condenser (7) is communicated with a mixing evaporator (8) through a circulating pump (4) and is adjusted to be communicated with the mixing evaporator (8) through the circulating pump (4) and the preheater (14), the condensate pipeline of the condenser (7) is communicated with the mixing evaporator (8), and the preheater (14) is also provided with a heat medium channel which is communicated with the outside to form the combined cycle power plant.
10. A combined cycle power plant, wherein an intermediate reheater is added to the combined cycle power plant as described in any one of claims 1 to 9, the hybrid evaporator (8) and the internal combustion engine (9) are respectively provided with a steam passage to communicate with the second expander (3), the second expander (3) is provided with a steam passage to communicate with the condenser (7), the hybrid evaporator (8) and the internal combustion engine (9) are together adjusted to be respectively provided with a steam passage to communicate with the second expander (3), the second expander (3) is provided with an intermediate reheated steam passage to communicate with the second expander (3) through the intermediate reheater (15), the second expander (3) is provided with a steam passage to communicate with the condenser (7), and the intermediate reheater (15) and a heat medium passage are communicated with the outside, thereby forming the combined cycle power plant.
11. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, an internal combustion engine, a third circulating pump, a third expander and a medium-temperature evaporator; the condenser (7) is provided with a condensate pipeline which is communicated with the mixed evaporator (8) through a circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (8) through a medium temperature evaporator (17), the mixed evaporator (8) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (6), the condenser (7) is also provided with a steam channel which is communicated with the internal combustion engine (9) through a second circulating pump (5), then the internal combustion engine (9) is provided with a steam channel which is communicated with the second expander (3), the second expander (3) is also provided with a steam channel which is communicated with the condenser (7), the condenser (7) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (17) through a third circulating pump (12), then the medium temperature evaporator (17) is provided with a steam channel which is communicated with a, the third expander (16) is also provided with a steam channel which is communicated with the condenser (7); an air channel is arranged outside and communicated with an internal combustion engine (9), a fuel channel is arranged outside and communicated with the internal combustion engine (9), a fuel gas channel is arranged inside the internal combustion engine (9) and communicated with the outside through a high-temperature heat exchanger (6), a cooling medium channel is arranged inside a condenser (7) and communicated with the outside, a mixing evaporator (8) or a heat medium channel is arranged inside the mixing evaporator or the heat medium channel and communicated with the outside, a medium-temperature evaporator (17) or the heat medium channel is communicated with the outside, an expander (2) is connected with a compressor (1) and transmits power, and the expander (2), a second expander (3), the internal combustion engine (9) and a third expander (16) are connected with the outside and output power, so that a combined.
12. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, an internal combustion engine, a second compressor, a third circulating pump, a third expander and a medium-temperature evaporator; the condenser (7) is provided with a condensate pipeline which is communicated with the mixed evaporator (8) through a circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (8) through a medium temperature evaporator (17), the mixed evaporator (8) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high temperature heat exchanger (6), the condenser (7) is also provided with a steam channel which is communicated with the internal combustion engine (9) through a second circulating pump (5), then the internal combustion engine (9) is provided with a steam channel which is communicated with the second expander (3), the second expander (3) is also provided with a steam channel which is communicated with the condenser (7), the condenser (7) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (17) through a third circulating pump (12), then the medium temperature evaporator (17) is provided with a steam channel which is communicated with a, the third expander (16) is also provided with a steam channel which is communicated with the condenser (7); the external part is provided with an air passage which is communicated with an internal combustion engine (9), the external part is also provided with a gaseous fuel passage which is communicated with the internal combustion engine (9) through a second compressor (10), the internal combustion engine (9) is also provided with a fuel gas passage which is communicated with the external part through a high-temperature heat exchanger (6), the condenser (7) is also provided with a cooling medium passage which is communicated with the external part, the hybrid evaporator (8) or the heat medium passage is also communicated with the external part, the intermediate-temperature evaporator (17) or the heat medium passage is also communicated with the external part, the expander (2) is connected with the compressor (1) and transmits power, the internal combustion engine (9) is connected with the second compressor (10) and transmits power, and the expander (2), the second expander (3), the internal combustion engine (9) and the third expander (16).
13. A combined cycle power plant as claimed in any one of claims 11 to 12, a newly-added compressor and a newly-added high-temperature heat exchanger are added, a steam channel of the compressor (1) is communicated with an expander (2) through the high-temperature heat exchanger (6) and adjusted to be that the compressor (1) is communicated with a steam channel of the newly-added compressor (A) through the high-temperature heat exchanger (6), the newly-added compressor (A) is communicated with the expander (2) through the newly-added high-temperature heat exchanger (B), a gas channel of an internal combustion engine (9) is communicated with the outside through the high-temperature heat exchanger (6) and adjusted to be that the internal combustion engine (9) is communicated with the outside through the newly-added high-temperature heat exchanger (B) and the high-temperature heat exchanger (6), and the expander (2) is connected with the newly-added compressor (A) and transmits power to.
14. A combined cycle power plant as claimed in any one of claims 11 to 12, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of a compressor (1) is communicated with an expansion machine (2) through a high-temperature heat exchanger (6) and adjusted to be that the compressor (1) is communicated with a steam channel of a new expansion machine (C) through the high-temperature heat exchanger (6), the steam channel of the new expansion machine (C) is communicated with the expansion machine (2) through the new high-temperature heat exchanger (B), a gas channel of an internal combustion engine (9) is communicated with the outside through the high-temperature heat exchanger (6) and adjusted to be that the internal combustion engine (9) is communicated with the outside through the new high-temperature heat exchanger (B) and the high-temperature heat exchanger (6), and the new expansion machine (C) is connected with the compressor (1) and transmits power to form a combined cycle power device.
15. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device of claims 11-12, a steam channel of a compressor (1) is communicated with an expander (2) through a high-temperature heat exchanger (6) and is adjusted to be communicated with the expander (2) through the heat regenerator (11) and the high-temperature heat exchanger (6), a steam channel of the expander (2) is communicated with a mixed evaporator (8) through a medium-temperature evaporator (17) and is adjusted to be communicated with the expander (2) through the steam channel of the heat regenerator (11) and the medium-temperature evaporator (17) and is communicated with the mixed evaporator (8), and the combined cycle power device is formed.
16. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device of claim 13, a steam channel of a compressor (1) is communicated with a newly-added compressor (A) through a high-temperature heat exchanger (6) and is adjusted to be communicated with the newly-added compressor (A) through the heat regenerator (11) and the high-temperature heat exchanger (6), a steam channel of an expander (2) is communicated with a mixed evaporator (8) through a medium-temperature evaporator (17) and is adjusted to be communicated with the mixed evaporator (8) through the heat regenerator (11) and the medium-temperature evaporator (17), and the combined cycle power device is formed.
17. A combined cycle power device is characterized in that a heat regenerator is added in any combined cycle power device of claim 14, a steam channel of a compressor (1) is communicated with a new expansion machine (C) through a high-temperature heat exchanger (6) and is adjusted to be communicated with the new expansion machine (C) through the heat regenerator (11) and the high-temperature heat exchanger (6), a steam channel of an expansion machine (2) is communicated with a mixed evaporator (8) through a medium-temperature evaporator (17) and is adjusted to be communicated with the mixed evaporator (8) through the heat regenerator (11) and the medium-temperature evaporator (17), and the combined cycle power device is formed.
18. A combined cycle power device is characterized in that a fourth circulating pump, a fifth circulating pump, a mixed heat regenerator and a second mixed heat regenerator are added in any combined cycle power device of claims 11-17, a condenser (7) is communicated with a mixed evaporator (8) through a circulating pump (4) and adjusted to be that the condenser (7) is communicated with the mixed heat regenerator (13) through the circulating pump (4) and a condensate pipeline is communicated with the mixed evaporator (8), the condenser (7) is communicated with a medium temperature evaporator (17) through a third circulating pump (12), then a steam channel is formed on the medium temperature evaporator (17) and communicated with a third expander (16) and adjusted to be that the condenser (7) is communicated with the second mixed heat regenerator (20) through a condensate pipeline through a third circulating pump (12), a steam extraction channel is additionally arranged on the third expander (16) and communicated with the mixed heat regenerator (13), a second steam extraction channel is additionally arranged on the third expander (16) and communicated with the second mixed heat regenerator (20), the mixed heat regenerator (13) is also provided with a condensate pipeline which is communicated with the mixed evaporator (8) through a fourth circulating pump (18), the second mixed heat regenerator (20) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (17) through a fifth circulating pump (19), and then the medium temperature evaporator (17) is also provided with a steam channel which is communicated with a third expander (16), so that a combined cycle power device is formed.
19. A combined cycle power plant, in any one of the combined cycle power plants of claims 11-17, a preheater and a second preheater are added, a condenser (7) is provided with a condensate pipeline communicated with a mixed evaporator (8) through a circulating pump (4) and adjusted to be communicated with the mixed evaporator (8) through the circulating pump (4) and the preheater (14), the condenser (7) is provided with a condensate pipeline communicated with a medium temperature evaporator (17) through a third circulating pump (12), then a steam channel is formed on the medium temperature evaporator (17) to be communicated with a third expander (16), the condenser (7) is adjusted to be communicated with the medium temperature evaporator (17) through a condensate pipeline communicated with the medium temperature evaporator (17) through the third circulating pump (12) and the second preheater (21), then a steam channel is formed on the medium temperature evaporator (17) to be communicated with the third expander (16), the preheater (14) and the second preheater (21) are respectively provided with a heat medium channel communicated with the outside, forming a combined cycle power plant.
20. A combined cycle power plant, which is in any combined cycle power plant of claim 19, wherein a condenser (7) is provided with a condensate pipeline which is communicated with a mixed evaporator (8) through a circulating pump (4) and a preheater (14), the condenser (7) is provided with a condensate pipeline which is communicated with a medium temperature evaporator (17) through a third circulating pump (12) and a second preheater (21), the combined cycle power plant is adjusted to be that the condenser (7) is provided with a condensate pipeline which is communicated with the mixed evaporator (8) directly after passing through the circulating pump (4) and the preheater (14), and the second pipeline is communicated with the medium temperature evaporator (17) through the third circulating pump (12) and the second preheater (21), thereby forming the combined cycle power plant.
21. A combined cycle power plant comprising a combined cycle power plant according to any one of claims 11 to 20, wherein an intermediate reheater is added, the intermediate temperature evaporator (17) having a steam passage communicating with the third expander (16) and the third expander (16) having a steam passage communicating with the condenser (7) is adjusted such that the intermediate temperature evaporator (17) having a steam passage communicating with the third expander (16), the third expander (16) and an intermediate reheater steam passage communicating with the third expander (16) through the intermediate reheater (15), the third expander (16) and a steam passage communicating with the condenser (7), and the intermediate reheater (15) and a heat medium passage communicating with the outside, thereby forming the combined cycle power plant.
22. A combined cycle power plant, which is characterized in that in any combined cycle power plant of claims 11-17, a second condenser is added, a third expander (16) is provided with a steam passage to be communicated with the condenser (7) and adjusted to be provided with a steam passage to be communicated with the second condenser (22) by the third expander (16), the condenser (7) is provided with a condensate pipeline to be communicated with a medium temperature evaporator (17) by a third circulating pump (12) and adjusted to be provided with a condensate pipeline to be communicated with the medium temperature evaporator (17) by the third circulating pump (12), and the second condenser (22) is also provided with a cooling medium passage to be communicated with the outside, thereby forming the combined cycle power plant.
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