CN111911251A - Combined cycle power plant - Google Patents

Combined cycle power plant Download PDF

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Publication number
CN111911251A
CN111911251A CN202010458013.9A CN202010458013A CN111911251A CN 111911251 A CN111911251 A CN 111911251A CN 202010458013 A CN202010458013 A CN 202010458013A CN 111911251 A CN111911251 A CN 111911251A
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China
Prior art keywords
communicated
expander
evaporator
temperature heat
heat exchanger
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Pending
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CN202010458013.9A
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Chinese (zh)
Inventor
李鸿瑞
李华玉
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Individual
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Individual
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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
    • 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
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B21/00—Combinations of two or more machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01B23/08—Adaptations for driving, or combinations with, pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • 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
    • F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
    • 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
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/06—Superheaters
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (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 communicated with the evaporator through a circulating pump, the evaporator is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second expander and a second high-temperature heat exchanger, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also communicated with the second evaporator through the second circulating pump, the second evaporator is also provided with a steam channel which is communicated with the expander through an intermediate steam inlet channel, the expander is also provided with a low-pressure steam channel which is communicated with the second evaporator, the second evaporator is also provided with a low-pressure steam channel which is communicated with the evaporator, and the evaporator is; the high-temperature heat exchanger, the second high-temperature heat exchanger and the second evaporator are also provided with heat source medium channels communicated with the outside, the condenser is also provided with cooling medium channels communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device.

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, which are common in human life and production; among them, the conversion of thermal energy into mechanical energy is an important way to obtain and provide power. In general, the temperature of the heat source decreases with the release of heat, and the heat source is variable. When fossil fuel is used as a source energy source, the heat source has the dual characteristics of high temperature and variable temperature, so that a power device based on single thermodynamic cycle is difficult to convert more heat energy into mechanical energy; for high-quality fuel, high thermal efficiency can be obtained by adopting the traditional gas-steam combined cycle, but the problems of high manufacturing cost, large investment, thermal efficiency to be improved and the like still exist.
Taking an external combustion type steam power device as an example, a heat source of the external combustion type steam power device belongs to a high-temperature and variable-temperature heat source; when Rankine cycle is taken as a theoretical basis and steam is taken as a cycle working medium to realize thermal power conversion, the limitation of temperature resistance, pressure resistance and safety of materials is applied, so that no matter what parameters are adopted for operation, large temperature difference loss exists between the cycle working medium and a heat source, irreversible loss is large, the heat efficiency is low, and the potential for improving the heat efficiency is great.
People need to simply, actively, safely and efficiently utilize heat energy to obtain power, and therefore the combined cycle steam power plant has the advantages of high heat efficiency, high safety, adaptability to high-temperature heat sources or variable-temperature heat sources and capability of coping with various fuels.
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 an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the evaporator after the condensate pipeline is communicated with the second evaporator through an intermediate steam inlet channel, the expander is also provided with a low-pressure steam channel which is communicated with the second evaporator, and the evaporator is also provided with a low-pressure steam channel which is respectively communicated with the compressor directly and communicated with the condenser through a third expander; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
2. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a heat supply device; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the condenser through a middle steam inlet channel of the second evaporator after the condensate pipeline is communicated with the second evaporator through the second circulating pump, and the heat supply device is also provided with a low-pressure steam channel which is respectively communicated with the compressor directly and communicated with the condenser through a third expander; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator is also provided with a heat source medium channel communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, the heat supplier is also provided with a heated medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
3. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the condenser through a middle steam inlet channel of the second evaporator after the condensate pipeline is communicated with the second evaporator through the second circulating pump, and the evaporator is also provided with a low-pressure steam channel which is respectively communicated with the compressor directly and is communicated with the condenser through a third expander; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
4. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the condenser through a middle steam inlet channel of the second evaporator after the condensate pipeline is communicated with the second evaporator through the second circulating pump, and the second evaporator and the low-pressure steam channel are respectively communicated with the compressor directly and the condenser through a third expander; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator is also provided with a heat source medium channel communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
5. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with a second evaporator after the condensate pipeline is communicated with the second evaporator through an intermediate steam inlet channel, the expander is also provided with a low-pressure steam channel which is communicated with the second evaporator, and the second evaporator and the low-pressure steam channel are respectively communicated with the compressor directly and communicated with the condenser through a third expander; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
6. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger and a high-temperature heat regenerator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger through the high-temperature heat regenerator, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the evaporator after the condensate pipeline is communicated with the second evaporator through the second circulating pump and the intermediate steam inlet channel, the expander is also provided with a low-pressure steam channel which is communicated with the second evaporator through the high-temperature heat regenerator, the second evaporator is also provided with a low-pressure steam channel which is communicated with the compressor directly and the condenser; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
7. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator, a heat supply device and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, the evaporator is communicated with a second expander through a steam channel after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel, the steam channel is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger and a high-temperature heat regenerator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger through the high-temperature heat regenerator, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with a heat supply device through the high-temperature heat regenerator after the condensate pipeline is communicated with the second evaporator through the second circulating pump, and the low-pressure steam channel is respectively communicated with the compressor and the condenser through a third expander; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator is also provided with a heat source medium channel communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, the heat supplier is also provided with a heated medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
8. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger and a high-temperature heat regenerator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger through the high-temperature heat regenerator, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the evaporator through a middle steam inlet channel after the condensate pipeline is communicated with the second evaporator through the second circulating pump, and the evaporator is also provided with a low-pressure steam channel which is communicated with the evaporator through the high-temperature heat regenerator, and the low-pressure steam channel is; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
9. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger and a high-temperature heat regenerator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger through the high-temperature heat regenerator, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the second evaporator through the high-temperature heat regenerator after the condensate pipeline is communicated with the second evaporator through the second circulating pump, the steam channel of the second evaporator is communicated with the expander through an intermediate steam inlet channel, and the low-pressure steam channel of the second evaporator is respectively communicated with the compressor; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator is also provided with a heat source medium channel communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
10. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, a steam channel of the evaporator is communicated with a second expander after the condensate pipeline is communicated with the evaporator through a circulating pump, the second expander is also provided with a steam channel which is communicated with a high-temperature heat exchanger through a second high-temperature heat exchanger and a high-temperature heat regenerator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger through the high-temperature heat regenerator, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the expander, the condenser is also provided with a low-pressure steam channel which is communicated with the second evaporator after the condensate pipeline is communicated with the second evaporator through the second circulating pump and the second evaporator, the steam channel of the second evaporator is communicated with the expander through an intermediate steam inlet channel, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the high-temperature heat regenerator, the evaporator is also provided; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the condenser is also provided with a cooling medium channel communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, the second evaporator is also provided with a heat source medium channel communicated with the outside, and the expander is connected with the compressor and transmits power to form a combined cycle power device; wherein, or the expander is connected with the compressor, the circulating pump and the second circulating pump and transmits power.
11. A combined cycle power plant, wherein in the combined cycle power plant of item 1 or 4, a heat source medium passage communicating with the outside through a second high temperature heat exchanger is eliminated or reserved, and a low pressure steam passage of an expander is communicated with a second evaporator and adjusted to be communicated with the second evaporator through the second high temperature heat exchanger, thereby forming the combined cycle power plant.
12. A combined cycle power plant, wherein in the combined cycle power plant of claim 3 or 5, a heat source medium passage communicating with the outside through the second high temperature heat exchanger is eliminated or reserved, and a low pressure steam passage of the expander is adjusted to communicate with the evaporator so that a low pressure steam passage of the expander communicates with the evaporator through the second high temperature heat exchanger, thereby forming the combined cycle power plant.
13. A combined cycle power device is characterized in that a low-temperature heat regenerator and a third circulating pump are added in any one of the combined cycle power devices in items 1 to 12, a condenser with a condensate pipeline communicated with an evaporator through the circulating pump is adjusted to be a condenser with a condensate pipeline communicated with the low-temperature heat regenerator through the circulating pump, a compressor is additionally provided with a middle steam extraction channel communicated with the low-temperature heat regenerator, and the low-temperature heat regenerator is further communicated with the evaporator through the condensate pipeline of the third circulating pump to form the combined cycle power device.
14. A combined cycle power device is characterized in that in any one of the combined cycle power devices 1-13, a newly-added heat regenerator and a newly-added circulating pump are added, a condenser with a condensate pipeline communicated with a second evaporator through the second circulating pump is adjusted to be a condenser with a condensate pipeline communicated with the newly-added heat regenerator through the second circulating pump, a middle steam extraction channel is additionally arranged on a compressor to be communicated with the newly-added heat regenerator, and the newly-added heat regenerator with a condensate pipeline communicated with the second evaporator through the newly-added circulating pump, so that the combined cycle power device is formed.
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.
In the figure, 1-expander, 2-second expander, 3-compressor, 4-third expander, 5-circulating pump, 6-second circulating pump, 7-high temperature heat exchanger, 8-second high temperature heat exchanger, 9-condenser, 10-evaporator (waste heat boiler), 11-second evaporator (second waste heat boiler), 12-heat supplier, 13-high temperature heat regenerator, 14-low temperature heat regenerator, 15-second circulating pump; a-adding a heat regenerator and B-adding a circulating pump.
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 shown in fig. 1 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then the evaporator 10 is communicated with a second expander 2 through a steam channel, the second expander 2 is also communicated with a high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8, the compressor 3 is communicated with the high-temperature heat exchanger 7 through a steam channel, the high-temperature heat exchanger 7 is also communicated with an expander 1 through a steam channel, the condenser 9 is also communicated with the second evaporator 11 through a second circulating pump 6, then the second evaporator 11 is communicated with the expander 1 through a steam channel, the expander 1 is also communicated with the second evaporator 11 through a low-pressure steam channel, the second evaporator 11 is also communicated with the evaporator 10 through a low-pressure steam channel, and the evaporator 10 is also communicated with the compressor 3 directly and the condenser 9 through a third expander 4 respectively; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, the steam discharged by the compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by the high-temperature heat exchanger 7 flows through the expander 1 to reduce pressure and do work; the second path of condensate of the condenser 9 is boosted by a second circulating pump 6 and enters a second evaporator 11 to absorb heat, raise temperature, vaporize and overheat, and then enters an expansion machine 1 through a middle steam inlet channel to reduce pressure and do work; the low-pressure steam discharged by the expander 1 gradually releases heat and cools through the second evaporator 11 and the evaporator 10, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path enters the condenser 9 to release heat and condense after flowing through the third expander 4 to reduce the pressure and do work; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 2 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a heat supply device; the condenser 9 has the condensate pipeline to communicate with evaporator 10 through the circulating pump 5, the evaporator 10 has steam passages to communicate with second expander 2 again, the second expander 2 also has steam passages to communicate with high-temperature heat exchanger 7 through the second high-temperature heat exchanger 8, the compressor 3 has steam passages to communicate with high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has steam passages to communicate with expander 1, the condenser 9 also has the condensate pipeline to communicate with second evaporator 11 through the second circulating pump 6, the second evaporator 11 has steam passages to communicate with expander 1 through the middle steam inlet passage again, the expander 1 also has low-pressure steam passages to communicate with heat supply device 12, the heat supply device 12 also has low-pressure steam passages to communicate with compressor 3 directly and with condenser 9 through the third expander 4 respectively; the high-temperature heat exchanger 7 is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger 8 is also provided with a heat source medium channel communicated with the outside, the condenser 9 is also provided with a cooling medium channel communicated with the outside, the evaporator 10 is also provided with a heat source medium channel communicated with the outside, the second evaporator 11 is also provided with a heat source medium channel communicated with the outside, the heat supplier 12 is also provided with a heated medium channel communicated with the outside, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, the steam discharged by the compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by the high-temperature heat exchanger 7 flows through the expander 1 to reduce pressure and do work; the second path of condensate of the condenser 9 is boosted by a second circulating pump 6 and enters a second evaporator 11 to absorb heat, raise temperature, vaporize and overheat, and then enters an expansion machine 1 through a middle steam inlet channel to reduce pressure and do work; the low-pressure steam discharged by the expander 1 is subjected to heat release and temperature reduction through the heat supply device 12, and then is divided into two paths, wherein the first path enters the compressor 3 for pressure rise and temperature rise, and the second path enters the condenser 9 for heat release and condensation after passing through the third expander 4 for pressure reduction and work done; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8, the evaporator 10 and the second evaporator 11, the cooling medium takes low-temperature heat load through the condenser 9, the medium to be heated takes medium-temperature heat load through the heater 12, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 3 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser 9 has condensate pipeline, after communicating with the evaporator 10 through the circulating pump 5, the evaporator 10 has steam channel to communicate with second expander 2 again, the second expander 2 also has steam channel to communicate with high-temperature heat exchanger 7 through the second high-temperature heat exchanger 8, the compressor 3 has steam channel to communicate with high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has steam channel to communicate with expander 1, the condenser 9 also has condensate pipeline, after communicating with second evaporator 11 through the second circulating pump 6, the second evaporator 11 has steam channel to communicate with expander 1 through the middle steam inlet channel again, the expander 1 also has low-pressure steam channel to communicate with evaporator 10, the evaporator 10 also has low-pressure steam channel to communicate with compressor 3 directly and with condenser 9 through the third expander 4 respectively; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, the steam discharged by the compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by the high-temperature heat exchanger 7 flows through the expander 1 to reduce pressure and do work; the second path of condensate of the condenser 9 is boosted by a second circulating pump 6 and enters a second evaporator 11 to absorb heat, raise temperature, vaporize and overheat, and then enters an expansion machine 1 through a middle steam inlet channel to reduce pressure and do work; the low-pressure steam discharged by the expander 1 passes through the evaporator 10 to release heat and reduce temperature, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path passes through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 4 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then a steam channel of the evaporator 10 is communicated with the second expander 2, the second expander 2 also has a steam channel which is communicated with a high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8, the compressor 3 has a steam channel which is communicated with the high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has a steam channel which is communicated with the expander 1, the condenser 9 also has a condensate pipeline which is communicated with the second evaporator 11 through a second circulating pump 6, then a steam channel of the second evaporator 11 is communicated with the expander 1 through an intermediate steam inlet channel, the expander 1 also has a low-pressure steam channel which is communicated with the second evaporator 11, and the second evaporator 11 also has a low-pressure steam channel which is respectively communicated with the compressor 3 directly and communicated with the condenser 9 through a third expander 4; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the evaporator 10 is also communicated with the outside through a heat source medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, the steam discharged by the compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by the high-temperature heat exchanger 7 flows through the expander 1 to reduce pressure and do work; the second path of condensate of the condenser 9 is boosted by a second circulating pump 6 and enters a second evaporator 11 to absorb heat, raise temperature, vaporize and overheat, and then enters an expansion machine 1 through a middle steam inlet channel to reduce pressure and do work; the low-pressure steam discharged by the expander 1 passes through the second evaporator 11 to release heat and reduce temperature, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path passes through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8, the evaporator 10 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power for the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 5 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser 9 has condensate pipeline, after communicating with the evaporator 10 through the circulating pump 5, the evaporator 10 has steam channel to communicate with second expander 2 again, the second expander 2 also has steam channel to communicate with high-temperature heat exchanger 7 through the second high-temperature heat exchanger 8, the compressor 3 has steam channel to communicate with high-temperature heat exchanger 7, the high-temperature heat exchanger 7 also has steam channel to communicate with expander 1, the condenser 9 also has condensate pipeline, after communicating with second evaporator 11 through the second circulating pump 6, the second evaporator 11 has steam channel to communicate with expander 1 through the middle steam inlet channel again, the expander 1 also has low-pressure steam channel to communicate with evaporator 10, the evaporator 10 also has low-pressure steam channel to communicate with second evaporator 11, the second evaporator 11 also has low-pressure steam channel to communicate with compressor 3 directly and communicate with condenser 9 through the third expander 4 respectively; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, the steam discharged by the compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by the high-temperature heat exchanger 7 flows through the expander 1 to reduce pressure and do work; the second path of condensate of the condenser 9 is boosted by a second circulating pump 6 and enters a second evaporator 11 to absorb heat, raise temperature, vaporize and overheat, and then enters an expansion machine 1 through a middle steam inlet channel to reduce pressure and do work; the low-pressure steam discharged by the expander 1 gradually releases heat and cools through the evaporator 10 and the second evaporator 11, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path enters the condenser 9 to release heat and condense after flowing through the third expander 4 to reduce the pressure and do work; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 6 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then the evaporator 10 is communicated with a second expander 2 through a steam channel, the second expander 2 is also communicated with a high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8 and a high-temperature heat regenerator 13, the compressor 3 is provided with a steam channel which is communicated with the high-temperature heat exchanger 7 through the high-temperature heat regenerator 13, the high-temperature heat exchanger 7 is also communicated with an expander 1 through a steam channel, the condenser 9 is also communicated with the second evaporator 11 through a second circulating pump 6, then the second evaporator 11 is provided with a steam channel which is communicated with the expander 1 through an intermediate steam inlet channel, the expander 1 is also provided with a low-pressure steam channel which is communicated with the second evaporator 11 through the high-temperature heat regenerator 13, the second evaporator 11 is also communicated with the evaporator 10 through a low-pressure steam channel, and the evaporator 10 is also provided with a low-pressure steam channel which is respectively communicated with the compressor 3 directly and the condenser 9; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 and the high-temperature heat regenerator 13 to gradually absorb heat and raise temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature; the steam discharged by the compressor 3 flows through the high-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce the pressure and do work, the second path of condensate of the condenser 9 enters the second evaporator 11 after being boosted by the second circulating pump 6 to absorb heat, raise the temperature, vaporize and overheat, and then enters the expander 1 to reduce the pressure and do work through the middle steam inlet channel; the low-pressure steam discharged by the expander 1 flows through the high-temperature heat regenerator 13, the second evaporator 11 and the evaporator 10 to gradually release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and heat, and the second path flows through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 7 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator, a heat supply device and a high-temperature heat regenerator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then the evaporator 10 has a steam channel which is communicated with the second expander 2, the second expander 2 also has a steam channel which is communicated with the high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8 and a high-temperature heat regenerator 13, the compressor 3 has a steam channel which is communicated with the high-temperature heat exchanger 7 through the high-temperature heat regenerator 13, the high-temperature heat exchanger 7 also has a steam channel which is communicated with the expander 1, the condenser 9 also has a condensate pipeline which is communicated with the second evaporator 11 through the second circulating pump 6, then the second evaporator 11 has a steam channel which is communicated with the expander 1 through an intermediate steam inlet channel, the expander 1 also has a low-pressure steam channel which is communicated with a heat supplier 12 through the high-temperature heat regenerator 13, and the heat supplier 12 also has a low-pressure steam channel which is respectively communicated with the compressor 3 directly; the high-temperature heat exchanger 7 is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger 8 is also provided with a heat source medium channel communicated with the outside, the condenser 9 is also provided with a cooling medium channel communicated with the outside, the evaporator 10 is also provided with a heat source medium channel communicated with the outside, the second evaporator 11 is also provided with a heat source medium channel communicated with the outside, the heat supplier 12 is also provided with a heated medium channel communicated with the outside, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 and the high-temperature heat regenerator 13 to gradually absorb heat and raise temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature; the steam discharged by the compressor 3 flows through the high-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce the pressure and do work, the second path of condensate of the condenser 9 enters the second evaporator 11 after being boosted by the second circulating pump 6 to absorb heat, raise the temperature, vaporize and overheat, and then enters the expander 1 to reduce the pressure and do work through the middle steam inlet channel; the low-pressure steam discharged by the expander 1 flows through the high-temperature heat regenerator 13 and the heat supplier 12 to gradually release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path flows through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8, the evaporator 10 and the second evaporator 11, the cooling medium takes low-temperature heat load through the condenser 9, the medium to be heated takes medium-temperature heat load through the heater 12, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 8 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then the evaporator 10 has a steam channel which is communicated with the second expander 2, the second expander 2 also has a steam channel which is communicated with the high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8 and a high-temperature heat regenerator 13, the compressor 3 has a steam channel which is communicated with the high-temperature heat exchanger 7 through the high-temperature heat regenerator 13, the high-temperature heat exchanger 7 also has a steam channel which is communicated with the expander 1, the condenser 9 also has a condensate pipeline which is communicated with the second evaporator 11 through the second circulating pump 6, then the second evaporator 11 has a steam channel which is communicated with the expander 1 through an intermediate steam inlet channel, the expander 1 also has a low-pressure steam channel which is communicated with the evaporator 10 through the high-temperature heat regenerator 13, and the evaporator 10 also has a low-pressure steam channel which is respectively communicated with the compressor 3 directly and communicated; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 and the high-temperature heat regenerator 13 to gradually absorb heat and raise temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature; the steam discharged by the compressor 3 flows through the high-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce the pressure and do work, the second path of condensate of the condenser 9 enters the second evaporator 11 after being boosted by the second circulating pump 6 to absorb heat, raise the temperature, vaporize and overheat, and then enters the expander 1 to reduce the pressure and do work through the middle steam inlet channel; the low-pressure steam discharged by the expander 1 flows through the high-temperature heat regenerator 13 and the evaporator 10 to gradually release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path flows through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 9 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then the evaporator 10 has a steam channel which is communicated with the second expander 2, the second expander 2 also has a steam channel which is communicated with the high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8 and a high-temperature heat regenerator 13, the compressor 3 has a steam channel which is communicated with the high-temperature heat exchanger 7 through the high-temperature heat regenerator 13, the high-temperature heat exchanger 7 also has a steam channel which is communicated with the expander 1, the condenser 9 also has a condensate pipeline which is communicated with the second evaporator 11 through a second circulating pump 6, then the second evaporator 11 has a steam channel which is communicated with the expander 1 through an intermediate steam inlet channel, the expander 1 also has a low-pressure steam channel which is communicated with the second evaporator 11 through the high-temperature heat regenerator 13, and the second evaporator 11 also has a low-pressure steam channel which is respectively communicated with the compressor 3 directly and communicated with the; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the evaporator 10 is also communicated with the outside through a heat source medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 and the high-temperature heat regenerator 13 to gradually absorb heat and raise temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature; the steam discharged by the compressor 3 flows through the high-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce the pressure and do work, the second path of condensate of the condenser 9 enters the second evaporator 11 after being boosted by the second circulating pump 6 to absorb heat, raise the temperature, vaporize and overheat, and then enters the expander 1 to reduce the pressure and do work through the middle steam inlet channel; the low-pressure steam discharged by the expander 1 flows through the high-temperature heat regenerator 13 and the second evaporator 11 to gradually release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and the temperature, and the second path flows through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8, the evaporator 10 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power for the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 10 is implemented as follows:
(1) structurally, the system mainly comprises an expander, a second expander, a compressor, a circulating pump, a third expander, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser 9 has a condensate pipeline which is communicated with the evaporator 10 through a circulating pump 5, then the evaporator 10 is communicated with a steam channel through a second expander 2, the second expander 2 is also communicated with a high-temperature heat exchanger 7 through a second high-temperature heat exchanger 8 and a high-temperature heat regenerator 13, the compressor 3 is provided with a steam channel which is communicated with the high-temperature heat exchanger 7 through the high-temperature heat regenerator 13, the high-temperature heat exchanger 7 is also communicated with an expander 1 through a steam channel, the condenser 9 is also communicated with the second evaporator 11 through a second circulating pump 6, then the second evaporator 11 is provided with a steam channel which is communicated with the expander 1 through an intermediate steam inlet channel, the expander 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 10 through the high-temperature heat regenerator 13, the evaporator 10 is also communicated with a low-pressure steam channel which is communicated with the second evaporator 11, and the second evaporator 11 is also provided with a low-pressure steam channel which is respectively communicated with the compressor 3 directly; the high-temperature heat exchanger 7 is also communicated with the outside through a heat source medium channel, the second high-temperature heat exchanger 8 is also communicated with the outside through a heat source medium channel, the condenser 9 is also communicated with the outside through a cooling medium channel, the second evaporator 11 is also communicated with the outside through a heat source medium channel, and the expander 1 is connected with the compressor 3 and transmits power.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 and the high-temperature heat regenerator 13 to gradually absorb heat and raise temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature; the steam discharged by the compressor 3 flows through the high-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 7 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce the pressure and do work, the second path of condensate of the condenser 9 enters the second evaporator 11 after being boosted by the second circulating pump 6 to absorb heat, raise the temperature, vaporize and overheat, and then enters the expander 1 to reduce the pressure and do work through the middle steam inlet channel; the low-pressure steam discharged by the expander 1 flows through the high-temperature heat regenerator 13, the evaporator 10 and the second evaporator 11 to gradually release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to increase the pressure and heat, and the second path flows through the third expander 4 to reduce the pressure and do work and then enters the condenser 9 to release heat and condense; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in FIG. 11 is implemented as follows:
in the combined cycle power plant shown in fig. 1, a heat source medium passage for communicating the second high temperature heat exchanger 8 with the outside is eliminated, and the expander 1 having a low pressure steam passage for communicating with the second evaporator 11 is adjusted so that the expander 1 having a low pressure steam passage for communicating with the second evaporator 11 via the second high temperature heat exchanger 8; the low-pressure steam discharged by the expander 1 replaces a heat source medium to become a high-temperature heat release medium of the second high-temperature heat exchanger 8, so that a combined cycle power plant is formed.
The combined cycle power plant shown in fig. 12 is implemented as follows:
in the combined cycle power plant shown in fig. 3, the heat source medium passage communicating the second high temperature heat exchanger 8 with the outside is eliminated, and the expander 1 having the low pressure steam passage communicating with the evaporator 10 is adjusted so that the expander 1 having the low pressure steam passage communicating with the evaporator 10 via the second high temperature heat exchanger 8; the low-pressure steam discharged by the expander 1 replaces a heat source medium to become a high-temperature heat release medium of the second high-temperature heat exchanger 8, so that a combined cycle power plant is formed.
The combined cycle power plant shown in fig. 13 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 1, a low-temperature heat regenerator and a third circulating pump are added, a condensate pipeline of a condenser 9 is communicated with an evaporator 10 through a circulating pump 5, the condenser 9 is adjusted to be communicated with the low-temperature heat regenerator 14 through the circulating pump 5, a middle steam extraction channel is additionally arranged on a compressor 3 and is communicated with the low-temperature heat regenerator 14, and the low-temperature heat regenerator 14 is communicated with the evaporator 10 through a condensate pipeline of the third circulating pump 15.
(2) In the process, the condensate of the condenser 9 is boosted by the circulating pump 5 and enters the low-temperature heat regenerator 14, and is mixed with the extracted steam from the compressor 3 to absorb heat and raise the temperature, and the extracted steam is mixed with the condensate to release heat and condense; the condensate of the low-temperature heat regenerator 14 is boosted by a third circulating pump 15 and enters an evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through a second expander 2 to reduce pressure and do work, flows through a second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters a high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by a compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature; the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce the pressure and do work, the second path of condensate of the condenser 9 enters the second evaporator 11 after being boosted by the second circulating pump 6 to absorb heat, raise the temperature, vaporize and overheat, and then enters the expander 1 to reduce the pressure and do work through the middle steam inlet channel; the low-pressure steam discharged by the expander 1 gradually releases heat and cools through the second evaporator 11 and the evaporator 10, and then is divided into two paths, namely the first path enters the compressor 3, and the second path enters the condenser 9 to release heat and condense after passing through the third expander 4 to reduce pressure and do work; the low-pressure steam entering the compressor 3 is compressed to a certain degree and then divided into two paths, wherein the first path enters the low-temperature heat regenerator 14 through the middle steam extraction channel, and the second path continues to increase the pressure and the temperature; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
The combined cycle power plant shown in fig. 14 is implemented as follows:
(1) structurally, in the combined cycle power plant shown in fig. 1, a newly added heat regenerator and a newly added circulating pump are added, a condensate pipeline of a condenser 9 is communicated with a second evaporator 11 through a second circulating pump 6 and adjusted to be that the condenser 9 is communicated with the newly added heat regenerator A through the second circulating pump 6, a middle steam extraction channel of a compressor 3 is additionally arranged and communicated with the newly added heat regenerator A, and the newly added heat regenerator A is communicated with the second evaporator 11 through a newly added circulating pump B.
(2) In the process, the first path of condensate of the condenser 9 is boosted by the circulating pump 5 and enters the evaporator 10 to absorb heat, raise temperature, vaporize and overheat, flows through the second expander 2 to reduce pressure and do work, flows through the second high-temperature heat exchanger 8 to absorb heat and raise temperature, then enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, the steam discharged by the compressor 3 enters the high-temperature heat exchanger 7 to absorb heat and raise temperature, and the steam discharged by the high-temperature heat exchanger 7 enters the expander 1 to reduce pressure and do work; the second path of condensate of the condenser 9 is boosted by the second circulating pump 6 and enters the newly-added heat regenerator A, and is mixed with the extracted steam from the compressor 3 to absorb heat and raise the temperature, and the extracted steam is mixed with the condensate to release heat and condense; the condensate of the newly added heat regenerator A is boosted by the newly added circulating pump B and enters the second evaporator 11 to absorb heat, raise temperature, vaporize and overheat, and then enters the expansion machine 1 through the middle steam inlet channel to reduce pressure and do work; the low-pressure steam discharged by the expander 1 gradually releases heat and cools through the second evaporator 11 and the evaporator 10, and then is divided into two paths, namely the first path enters the compressor 3, and the second path enters the condenser 9 to release heat and condense after passing through the third expander 4 to reduce pressure and do work; the low-pressure steam entering the compressor 3 is compressed to a certain degree and then is divided into two paths, wherein the first path enters the newly-added heat regenerator A through the middle steam extraction channel, and the second path continues to increase the pressure and the temperature; the heat source medium provides driving heat load through the high-temperature heat exchanger 7, the second high-temperature heat exchanger 8 and the second evaporator 11, the cooling medium takes away low-temperature heat load through the condenser 9, the expander 1 provides power for the compressor 3, and the expander 1, the second expander 2 and the third expander 4 provide power to the outside, so that a combined cycle power device is formed.
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 circulating working medium completes high-temperature heat absorption under low pressure, the temperature difference loss between the circulating working medium and a high-temperature heat source is small, and the heat efficiency of a system and the safety of the device are improved.
(2) The cycle working medium mainly depends on the condensation phase change process to realize low-temperature heat release, the temperature difference loss between the cycle working medium and the environment is controllable, and the heat efficiency of the device is favorably improved.
(3) The low-pressure high-temperature operation mode is adopted in the high-temperature area, the contradiction that the heat efficiency, the circulating medium parameters and the pressure and temperature resistance of the pipe are difficult to reconcile in the traditional steam power device is solved, so that the temperature difference loss between a heat source and the circulating medium can be greatly reduced, and the heat efficiency of the device is greatly improved.
(4) The bottom circulation is carried out in a grading way, which is beneficial to reducing the irreversible loss of temperature difference and providing the heat efficiency of the device.
(5) The equipment is shared, the heat absorption process of the lower cycle, namely Rankine cycle, is increased, and the heat efficiency of the device is improved.
(6) And a single working medium is adopted, so that the operation cost is reduced, and the adjustment flexibility of the thermal power device is improved.
(7) When the high-temperature expansion machine is shared, the number of core equipment is reduced, and the system investment is favorably reduced and the heat efficiency of the device is favorably improved.
(8) The device can effectively deal with high-temperature heat sources and variable-temperature heat sources, and deal with high-quality fuels and non-high-quality fuels, and has wide application range.
(9) On the premise of realizing high thermal efficiency, low-pressure operation can be selected, so that the operation safety of the device is greatly improved.
(10) The heat recovery of the enterprise device can be simply, actively, safely and efficiently realized.
(11) The heat efficiency can be effectively improved by applying the heat exchanger to the lower end of the gas-steam combined cycle.
(12) When the system is applied to a coal-fired thermodynamic system, the original advantages of the traditional steam power cycle, namely water vapor as a working medium, can be kept, and the working parameter range is wide; according to the actual condition, the working in the subcritical, critical, supercritical or ultra supercritical state can be selected.

Claims (14)

1. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8), the compressor (3) is provided with a steam channel communicated with the high-temperature heat exchanger (7), the high-temperature heat exchanger (7) is also provided with a steam channel communicated with the expander (1), the condenser (9) is also provided with a condensate pipeline, the second evaporator (11) is communicated with the second evaporator (11) through a second circulating pump (6), the second evaporator (11) is provided with a steam channel communicated with the expander (1) through a middle steam inlet channel, the expander (1) is also provided with a low-pressure steam channel communicated with the second evaporator (11), and the second evaporator (11) is also provided with a low-pressure steam channel communicated with the evaporator (10), the evaporator (10) is also provided with a low-pressure steam channel which is respectively and directly communicated with the compressor (3) and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) or the heat source medium channel is also communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
2. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a heat supply device; the condenser (9) is provided with a condensate pipeline which is communicated with the evaporator (10) through a circulating pump (5), then the evaporator (10) is provided with a steam channel which is communicated with the second expander (2), the second expander (2) is also provided with a steam channel which is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8), the compressor (3) is provided with a steam channel which is communicated with the high-temperature heat exchanger (7), the high-temperature heat exchanger (7) is also provided with a steam channel which is communicated with the expander (1), the condenser (9) is also provided with a condensate pipeline which is communicated with the second evaporator (11) through a second circulating pump (6), then the second evaporator (11) is provided with a steam channel which is communicated with the expander (1) through an intermediate steam inlet channel, the expander (1) is also provided with a low-pressure steam channel which is communicated with a heat supply device (12), and the heat supply device (12) is also provided with a low-pressure steam channel which is respectively communicated with the compressor (3) directly and communicated with the condenser (9; the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) is also provided with a heat source medium channel communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, the heat supplier (12) is also provided with a heated medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
3. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser (9) is provided with a condensate pipeline which is communicated with the evaporator (10) through a circulating pump (5), then the evaporator (10) is provided with a steam channel which is communicated with the second expander (2), the second expander (2) is also provided with a steam channel which is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8), the compressor (3) is provided with a steam channel which is communicated with the high-temperature heat exchanger (7), the high-temperature heat exchanger (7) is also provided with a steam channel which is communicated with the expander (1), the condenser (9) is also provided with a condensate pipeline which is communicated with a second evaporator (11) through a second circulating pump (6), then the second evaporator (11) is also provided with a steam channel which is communicated with the expander (1) through an intermediate steam inlet channel, the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (10), and the evaporator (10) is also provided with a low-pressure steam channel which is respectively communicated with the compressor (3) directly and is communicated with the condenser (9) through; the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) or the heat source medium channel is also communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
4. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser (9) is provided with a condensate pipeline which is communicated with the evaporator (10) through a circulating pump (5), then the evaporator (10) is provided with a steam channel which is communicated with the second expander (2), the second expander (2) is also provided with a steam channel which is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8), the compressor (3) is provided with a steam channel which is communicated with the high-temperature heat exchanger (7), the high-temperature heat exchanger (7) is also provided with a steam channel which is communicated with the expander (1), the condenser (9) is also provided with a condensate pipeline which is communicated with the second evaporator (11) through a second circulating pump (6), then the second evaporator (11) is provided with a steam channel which is communicated with the expander (1) through a middle steam inlet channel, the expander (1) is also provided with a low-pressure steam channel which is communicated with the second evaporator (11), the second evaporator (11) is also provided with a low-pressure steam channel which is respectively communicated with the compressor (3) directly and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) is also provided with a heat source medium channel communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
5. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator and a second evaporator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8), the compressor (3) is provided with a steam channel communicated with the high-temperature heat exchanger (7), the high-temperature heat exchanger (7) is also provided with a steam channel communicated with the expander (1), the condenser (9) is also provided with a condensate pipeline, the second evaporator (11) is communicated with the second evaporator (11) through a second circulating pump (6), a steam channel is communicated with the expander (1) through a middle steam inlet channel, the expander (1) is also provided with a low-pressure steam channel communicated with the evaporator (10), the evaporator (10) is also provided with a low-pressure steam channel communicated with the second evaporator (11), the second evaporator (11) is also provided with a low-pressure steam channel which is respectively communicated with the compressor (3) directly and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) or the heat source medium channel is also communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
6. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), then a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8) and a high-temperature heat regenerator (13), the compressor (3) is provided with a steam channel, the high-temperature heat exchanger (7) is communicated with the high-temperature heat exchanger (7) through the high-temperature heat regenerator (13), the high-temperature heat exchanger (7) is also provided with a steam channel, the expander (1) is communicated with the condenser (9), the condensate pipeline is also provided with a low-pressure steam channel, the low-pressure steam channel is communicated with the second evaporator (11) through the high-temperature heat regenerator (13) after the second evaporator (11) is communicated with the second circulating pump (6), the second evaporator (11) is also provided with a low-pressure steam channel which is communicated with the evaporator (10), and the evaporator (10) is also provided with a low-pressure steam channel which is respectively and directly communicated with the compressor (3) and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) or the heat source medium channel is also communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
7. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator, a heat supply device and a high-temperature heat regenerator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), then a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8) and a high-temperature heat regenerator (13), the compressor (3) is provided with a steam channel, the high-temperature heat exchanger (7) is communicated with the high-temperature heat exchanger (7) through the high-temperature heat regenerator (13), the high-temperature heat exchanger (7) is also provided with a steam channel, the expander (1) is communicated with the condenser (9), the condensate pipeline is also provided with a low-pressure steam channel, the low-pressure steam channel is communicated with the high-temperature heat regenerator (12) through the high-temperature heat regenerator (13) and the second evaporator (11) after the second circulating pump (6) is communicated with the second evaporator (11), the heat supply device (12) is also provided with a low-pressure steam channel which is respectively and directly communicated with the compressor (3) and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) is also provided with a heat source medium channel communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, the heat supplier (12) is also provided with a heated medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
8. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), then a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8) and a high-temperature heat regenerator (13), the compressor (3) is provided with a steam channel, the high-temperature heat exchanger (7) is communicated with the high-temperature heat exchanger (7) through the high-temperature heat regenerator (13), the high-temperature heat exchanger (7) is also provided with a steam channel, the expander (1) is communicated with the condenser (9), the condensate pipeline is communicated with the second evaporator (11) through a second circulating pump (6), then a steam channel is communicated with the expander (1) through an intermediate steam inlet channel, the expander (1) is also provided with a low-pressure steam channel, and the evaporator (10) are communicated through the high-temperature heat regenerator (13), the evaporator (10) is also provided with a low-pressure steam channel which is respectively and directly communicated with the compressor (3) and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) or the heat source medium channel is also communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
9. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), then a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8) and a high-temperature heat regenerator (13), the compressor (3) is provided with a steam channel, the high-temperature heat exchanger (7) is communicated with the high-temperature heat exchanger (7) through the high-temperature heat regenerator (13), the high-temperature heat exchanger (7) is also provided with a steam channel, the expander (1) is communicated with the condenser (9), the condensate pipeline is also provided with a low-pressure steam channel, the low-pressure steam channel is communicated with the second evaporator (11) through the high-temperature heat regenerator (13) after the second evaporator (11) is communicated with the second circulating pump (6), the second evaporator (11) is also provided with a low-pressure steam channel which is respectively communicated with the compressor (3) directly and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) is also provided with a heat source medium channel communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
10. The combined cycle power device mainly comprises an expander, a second expander, a compressor, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a second high-temperature heat exchanger, a condenser, an evaporator, a second evaporator and a high-temperature heat regenerator; the condenser (9) is provided with a condensate pipeline, the evaporator (10) is communicated with the second expander (2) through a circulating pump (5), then a steam channel is communicated with the high-temperature heat exchanger (7) through a second high-temperature heat exchanger (8) and a high-temperature heat regenerator (13), the compressor (3) is provided with a steam channel, the high-temperature heat exchanger (7) is communicated with the high-temperature heat exchanger (7) through the high-temperature heat regenerator (13), the high-temperature heat exchanger (7) is also provided with a steam channel, the expander (1) is communicated with the condenser (9), the condensate pipeline is communicated with the second evaporator (11) through a second circulating pump (6), then a steam channel is communicated with the expander (1) through an intermediate steam inlet channel, the expander (1) is also provided with a low-pressure steam channel, and the evaporator (10) are communicated through the high-temperature heat regenerator (13), the evaporator (10) is also provided with a low-pressure steam channel which is communicated with a second evaporator (11), the second evaporator (11) is also provided with a low-pressure steam channel which is respectively and directly communicated with the compressor (3) and communicated with the condenser (9) through a third expander (4); the high-temperature heat exchanger (7) is also provided with a heat source medium channel communicated with the outside, the second high-temperature heat exchanger (8) is also provided with a heat source medium channel communicated with the outside, the condenser (9) is also provided with a cooling medium channel communicated with the outside, the evaporator (10) or the heat source medium channel is also communicated with the outside, the second evaporator (11) is also provided with a heat source medium channel communicated with the outside, and the expander (1) is connected with the compressor (3) and transmits power to form a combined cycle power device; wherein, or the expander (1) is connected with the compressor (3), the circulating pump (5) and the second circulating pump (6) and transmits power.
11. A combined cycle power plant, in the combined cycle power plant of claim 1 or claim 4, a heat source medium passage for communicating the second high temperature heat exchanger (8) with the outside is eliminated or reserved, and the expander (1) is adjusted to have a low pressure steam passage for communicating with the second evaporator (11) so that the expander (1) has a low pressure steam passage for communicating with the second evaporator (11) through the second high temperature heat exchanger (8), thereby forming the combined cycle power plant.
12. A combined cycle power plant, in the combined cycle power plant of claim 3 or claim 5, a heat source medium passage for communicating the second high temperature heat exchanger (8) with the outside is eliminated or reserved, and the expander (1) is adjusted to have a low pressure steam passage for communicating with the evaporator (10) so that the expander (1) has a low pressure steam passage for communicating with the evaporator (10) through the second high temperature heat exchanger (8), thereby forming the combined cycle power plant.
13. A combined cycle power device is characterized in that a low-temperature heat regenerator and a third circulating pump are added in the combined cycle power device according to any one of claims 1 to 12, a condenser (9) is provided with a condensate pipeline which is communicated with an evaporator (10) through a circulating pump (5) and is adjusted to be that the condenser (9) is provided with a condensate pipeline which is communicated with the low-temperature heat regenerator (14) through the circulating pump (5), a middle steam extraction channel is additionally arranged on a compressor (3) and is communicated with the low-temperature heat regenerator (14), and the low-temperature heat regenerator (14) is further provided with a condensate pipeline which is communicated with the evaporator (10) through the third circulating pump (15) to form the combined cycle power device.
14. A combined cycle power device is characterized in that in any combined cycle power device of claims 1-13, a newly added heat regenerator and a newly added circulating pump are added, a condenser (9) is communicated with a second evaporator (11) through a second circulating pump (6) and adjusted to be a condenser (9) which is communicated with a newly added heat regenerator (A) through a second circulating pump (6), a middle steam extraction channel is additionally arranged on a compressor (3) and communicated with the newly added heat regenerator (A), and the newly added heat regenerator (A) is communicated with the second evaporator (11) through a newly added circulating pump (B) through a condensed liquid pipeline to form the combined cycle power device.
CN202010458013.9A 2019-05-23 2020-05-20 Combined cycle power plant Pending CN111911251A (en)

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CN201910474261 2019-05-23
CN201910474261X 2019-05-23

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