CN115387871A - Double-heat source gas-steam combined cycle power device - Google Patents

Double-heat source gas-steam combined cycle power device Download PDF

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Publication number
CN115387871A
CN115387871A CN202210696240.4A CN202210696240A CN115387871A CN 115387871 A CN115387871 A CN 115387871A CN 202210696240 A CN202210696240 A CN 202210696240A CN 115387871 A CN115387871 A CN 115387871A
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China
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communicated
steam
heat exchanger
channel
compressor
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Chinese (zh)
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李华玉
李鸿瑞
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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
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

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

Abstract

The invention provides a double-heat-source gas-steam combined cycle power device, belonging to the technical field of thermodynamics and thermodynamics. An air channel is arranged outside and is communicated with a combustion chamber through a second compressor and a heat source heat exchanger, a fuel channel is arranged outside and is communicated with the combustion chamber, a fuel gas channel is arranged outside and is communicated with the outside through a gas turbine and a high-temperature heat exchanger, a condenser is communicated with the high-temperature heat exchanger through a booster pump and an evaporator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is provided with a cooling medium channel, the evaporator is provided with a gas channel, the heat source heat exchanger is provided with a heat source medium channel which is respectively communicated with the outside, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, so that the double-heat source gas-steam combined cycle power device is formed.

Description

Double-heat source gas-steam combined cycle power device
The technical field is as follows:
the invention belongs to the technical field of thermodynamics and thermodynamics.
The background art comprises the following steps:
cold demand, heat demand and power demand, which are common in human life and production; among them, converting high temperature heat energy into mechanical energy through a thermal power device is an important means for obtaining power or electricity for human beings.
Fuel is an important option for providing high temperature heat energy, such as natural gas providing high temperature driving heat energy for gas turbine plants by combustion; in plants for steel production and coking production, high temperature waste heat is an associated high temperature thermal resource that can also be partially converted into mechanical energy by a steam power plant or other thermal power plant. However, in the technology in which the fuel is independently used as the driving thermal energy of the thermal device through combustion, and the high-temperature waste heat is independently used as the driving thermal energy of the thermal device, a system for converting the thermal energy into the mechanical energy often has a large irreversible loss due to the temperature difference, especially the irreversible loss due to the temperature difference existing in the combustion process of the fuel.
People need to simply, actively, safely and efficiently utilize energy to obtain power. Therefore, the invention provides the double-heat-source gas-steam combined cycle power device which reasonably matches and uses the high-temperature waste heat and the fuel, realizes the complementation of advantages and shortages, greatly improves the heat power-changing efficiency of the high-temperature waste heat, reduces the emission of greenhouse gases and can obviously reduce the fuel cost.
The invention content is as follows:
the invention mainly aims to provide a double-heat-source gas-steam combined cycle power device, and the specific invention contents are explained in sections as follows:
1. the double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger and a combustion chamber; an air channel is arranged outside and communicated with a combustion chamber through a second compressor and a heat source heat exchanger, a fuel channel is arranged outside and communicated with the combustion chamber, a fuel gas channel is arranged outside and communicated with the outside through a gas turbine and a high-temperature heat exchanger, a condenser is provided with a condensate pipeline which is communicated with an evaporator through a booster pump, then a steam channel of the evaporator is communicated with the high-temperature heat exchanger, the compressor is provided with a steam channel communicated with the high-temperature heat exchanger, a steam channel of the high-temperature heat exchanger is communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, namely, the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, so that the double-heat source gas-steam combined cycle power device is formed.
2. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; the external part is provided with an air channel communicated with a combustion chamber through a second compressor, a high-temperature heat regenerator and a heat source heat exchanger, the external part is also provided with a fuel channel communicated with the combustion chamber, the combustion chamber is also provided with a gas channel communicated with the external part through a gas turbine, the high-temperature heat regenerator and the high-temperature heat exchanger, a condenser is provided with a condensate pipeline communicated with an evaporator through a booster pump, then a steam channel of the evaporator is communicated with the high-temperature heat exchanger, the compressor is provided with a steam channel communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel communicated with the steam turbine, the steam turbine is also provided with a low-pressure steam channel communicated with the evaporator and then divided into two paths, namely the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is also provided with a cooling medium channel communicated with the external part, the heat source heat exchanger is also provided with a heat source medium channel communicated with the external part, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, so as to form the double-heat source gas-steam combined cycle power device.
3. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; the external part is provided with an air channel which is communicated with a combustion chamber through a second compressor, a heat source heat exchanger and a high-temperature heat regenerator, the external part is also provided with a fuel channel which is communicated with the combustion chamber, the combustion chamber is also provided with a gas channel which is communicated with the external part through a gas turbine, the high-temperature heat regenerator and the high-temperature heat exchanger, a condenser is provided with a condensate pipeline which is communicated with an evaporator through a booster pump, then the evaporator is further provided with a steam channel which is communicated with the high-temperature heat exchanger, the compressor is also provided with a steam channel which is communicated with a steam turbine, the steam turbine is further provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, namely the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is further provided with a cooling medium channel which is communicated with the external part, the heat source heat exchanger is further provided with a heat source medium channel which is communicated with the external part, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, thus forming the double-heat source gas-steam combined cycle power device.
4. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; the external part of the gas turbine is communicated with the external part of the gas turbine through a high-temperature heat regenerator and a low-pressure steam channel, the condenser is provided with a condensate pipeline, a booster pump is communicated with an evaporator, the evaporator is further provided with a steam channel, the compressor is provided with a steam channel, the high-temperature heat exchanger is communicated with a steam turbine, the steam turbine is further provided with a low-pressure steam channel, the low-pressure steam channel is communicated with the evaporator and then divided into two paths, namely, the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is further provided with a cooling medium channel, the heat source heat exchanger is also provided with a heat source medium channel, the heat source heat exchanger is communicated with the external part, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, so that the double-gas-steam combined cycle power device is formed.
5. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; the external part is provided with an air channel which is communicated with a combustion chamber through a second compressor, a heat source heat exchanger and a high-temperature heat regenerator, the external part is also provided with a fuel channel which is communicated with the combustion chamber, the combustion chamber is also provided with a gas channel which is communicated with a gas turbine, the gas turbine is further provided with a gas channel which is communicated with the external part through the high-temperature heat exchanger, a condenser is provided with a condensate pipeline which is communicated with an evaporator through a booster pump, the evaporator is further 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 a steam turbine, the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, namely the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is also provided with a cooling medium channel which is communicated with the external part, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the external part, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, thus forming the double gas-steam combined cycle power device.
6. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; the air channel of the second compressor is communicated with the second compressor, the air channel of the second compressor is communicated with the second compressor through a high-temperature heat regenerator, the air channel of the second compressor is communicated with a combustion chamber through a heat source heat exchanger, the fuel channel of the second compressor is communicated with the combustion chamber, the combustion chamber is also communicated with the outside through a gas turbine, the high-temperature heat regenerator and the high-temperature heat exchanger, a condenser is provided with a condensate pipeline, the evaporator is further provided with a steam channel communicated with the high-temperature heat exchanger through a booster pump, the high-temperature heat exchanger is further provided with a steam channel communicated with a steam turbine, the steam turbine is further provided with a low-pressure steam channel communicated with the evaporator and then divided into two paths, namely the first path is communicated with the compressor and the second path is communicated with the condenser, the condenser is further provided with a cooling medium channel communicated with the outside, the heat source heat exchanger is further provided with the heat source medium channel communicated with the outside, the steam turbine is connected with the compressor and transmits power, and the gas turbine is connected with the second compressor and transmits power, and forms the double-heat source gas-steam combined cycle power device.
7. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices 1-6, a gas channel is additionally arranged on an evaporator and communicated with the outside to form the double-heat-source gas-steam combined cycle power device.
8. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices in items 1 to 6, a heat supply device is added, a steam turbine is divided into two paths after being communicated with an evaporator, wherein the first path is communicated with a compressor, the second path is communicated with a condenser, the steam turbine is divided into two paths after being communicated with the heat supply device, the first path is communicated with the compressor, the second path is communicated with the condenser, the heat supply device is also communicated with the outside through a heated medium channel, and the evaporator is additionally provided with a gas channel or a heat source medium channel which is communicated with the outside to form the double-heat-source gas-steam combined cycle power device.
9. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices in items 1-7, a medium-temperature heat regenerator is added, a steam channel of an evaporator is communicated with a high-temperature heat exchanger and adjusted to be communicated with the high-temperature heat exchanger through the medium-temperature heat regenerator, a steam channel of a compressor is communicated with the high-temperature heat exchanger and adjusted to be communicated with the high-temperature heat exchanger through the medium-temperature heat regenerator, a low-pressure steam channel of a steam turbine is communicated with the evaporator through the medium-temperature heat regenerator, and a low-pressure steam channel of the steam turbine is communicated with the evaporator through the medium-temperature heat regenerator, so that the double-heat-source gas-steam combined cycle power device is formed.
10. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices in items 1-7, a medium-temperature heat regenerator is added, a steam channel of an evaporator is communicated with a high-temperature heat exchanger and adjusted to be communicated with the high-temperature heat exchanger through the medium-temperature heat regenerator, a steam channel of a compressor is communicated with the high-temperature heat exchanger and adjusted to be communicated with the high-temperature heat exchanger through the medium-temperature heat regenerator, a low-pressure steam channel of a steam turbine is communicated with the evaporator through the medium-temperature heat regenerator, and then the steam turbine is communicated with the evaporator through the low-pressure steam channel, so that the double-heat-source gas-steam combined cycle power device is formed.
11. A double-heat-source gas-steam combined cycle power device is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the double-heat-source gas-steam combined cycle power devices in items 1-10, a condenser is adjusted to be communicated with the booster pump through a condensate pipeline, the condenser is adjusted to be communicated with the low-temperature heat regenerator through the second booster pump through the condensate pipeline, a compressor is provided with a steam extraction channel to be communicated with the low-temperature heat regenerator, and the low-temperature heat regenerator is communicated with the booster pump through the condensate pipeline, so that the double-heat-source gas-steam combined cycle power device is formed.
12. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices in items 1-11, a high-temperature heat exchanger is adjusted to be communicated with a steam turbine through a steam channel, and the high-temperature heat exchanger is adjusted to be communicated with the steam turbine through the steam channel of the heat source heat exchanger, so that the double-heat-source gas-steam combined cycle power device is formed.
13. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices 1-12, an expansion speed increaser is added to replace a steam turbine, a double-energy compressor is added to replace a compressor, a diffuser pipe is added to replace a booster pump, and the double-heat-source gas-steam combined cycle power device is formed.
14. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices 1-13, a high-temperature heat exchanger is additionally provided with a heat source medium channel communicated with the outside to form the double-heat-source gas-steam combined cycle power device.
Description of the drawings:
FIG. 1 is a schematic thermodynamic system diagram of the 1 st principle of a dual heat source combined gas-steam cycle power plant provided in accordance with the present invention.
FIG. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a dual heat source gas-steam 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 dual heat source combined gas-steam cycle power plant provided in accordance with the present invention.
FIG. 4 is a diagram of a 4 th principal thermodynamic system of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 5 is a schematic thermodynamic system diagram of the 5 th principle of a dual heat source combined gas-steam cycle power plant provided in accordance with the present invention.
FIG. 6 is a 6 th principal thermodynamic system diagram of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 7 is a 7 th principal thermodynamic system diagram of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 8 is a diagram of the 8 th principle thermodynamic system of a dual heat source gas-steam 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 dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 10 is a 10 th principal thermodynamic system diagram of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 11 is a 11 th principal thermodynamic system diagram of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 12 is a schematic thermodynamic system diagram of a 12 th principle of a dual heat source combined gas-steam cycle power plant provided in accordance with the present invention.
FIG. 13 is a 13 th principal thermodynamic system diagram of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 14 is a diagram of the 14 th principal thermodynamic system of a dual heat source gas-steam combined cycle power plant provided in accordance with the present invention.
In the figure, 1-steam turbine, 2-compressor, 3-booster pump, 4-condenser, 5-evaporator (waste heat boiler), 6-high temperature heat exchanger, 7-second compressor, 8-gas turbine, 9-heat source heat exchanger, 10-combustion chamber, 11-high temperature regenerator, 12-heat supplier, 13-medium temperature regenerator, 14-second booster pump, 15-low temperature regenerator, 16-expansion speed increaser, 17-dual-energy compressor, 18-diffuser pipe.
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the description is not repeated if necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.
The dual heat source gas-steam combined cycle power plant shown in fig. 1 is realized by:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger and a combustion chamber; an air channel is arranged outside and communicated with a combustion chamber 10 through a second compressor 7 and a heat source heat exchanger 9, a fuel channel is arranged outside and communicated with the combustion chamber 10, a fuel channel is also arranged outside and communicated with the outside through a gas turbine 8 and a high-temperature heat exchanger 6, a condenser 4 is provided with a condensate pipeline which is communicated with an evaporator 5 through a booster pump 3, then a steam channel of the evaporator 5 is communicated with the high-temperature heat exchanger 6, a steam channel of the compressor 2 is communicated with the high-temperature heat exchanger 6, a steam channel of the high-temperature heat exchanger 6 is also communicated with a steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 5 and then divided into two paths, namely, the first path is communicated with the compressor 2, the second path is communicated with the condenser 4, a cooling medium channel of the condenser 4 is also communicated with the outside, the heat source heat exchanger 9 is also provided with a heat source medium channel which is communicated with the outside, the steam turbine 1 is connected with the compressor 2 and transmits power, and the gas turbine 8 is connected with the second compressor 7 and transmits power.
(2) In the flow, the external air flows through the second compressor 7 to increase the pressure and the temperature, flows through the heat source heat exchanger 9 to absorb heat and increase the temperature, and then enters the combustion chamber 10; the external fuel enters the combustion chamber 10, is mixed with the compressed air from the heat source heat exchanger 9 and is combusted into high-temperature and high-pressure fuel gas; the gas generated by the combustion chamber 10 flows through the gas turbine 8 to reduce pressure and do work, flows through the high-temperature heat exchanger 6 to release heat and reduce temperature, and is discharged outwards; the condensate of the condenser 4 is boosted by the booster pump 3, passes through the evaporator 5 to absorb heat, raise temperature, vaporize and overheat, then enters the high-temperature heat exchanger 6 to absorb heat and raise temperature, and the steam discharged by the compressor 2 enters the high-temperature heat exchanger 6 to absorb heat and raise temperature; the steam discharged by the high-temperature heat exchanger 6 flows through the steam turbine 1 to reduce pressure and do work, the low-pressure steam discharged by the steam turbine 1 flows through the evaporator 5 to release heat and reduce temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the compressor 2 to increase pressure and temperature, and the second path enters the condenser 4 to release heat and condense; a heat source medium and fuel jointly provide driving heat load through a heat source heat exchanger 9 and a combustion chamber 10, a cooling medium takes away low-temperature heat load through a condenser 4, and air and fuel gas take away low-temperature heat load through an inlet and outlet flow; the work output by the steam turbine 1 and the gas turbine 8 is provided for the compressor 2, the second compressor 7 and the external actuating power, or the work output by the steam turbine 1 and the gas turbine 8 is provided for the compressor 2, the booster pump 3, the second compressor 7 and the external actuating power, so that the double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 2 is realized by:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber 10 through a second compressor 7, a high-temperature heat regenerator 11 and a heat source heat exchanger 9, a fuel channel is arranged outside and is communicated with the combustion chamber 10, a fuel channel is also arranged outside and is communicated with the combustion chamber 10, the combustion chamber 10 is also provided with a fuel gas channel and is communicated with the outside through a gas turbine 8, the high-temperature heat regenerator 11 and the high-temperature heat exchanger 6, a condenser 4 is provided with a condensate pipeline which is communicated with an evaporator 5 through a booster pump 3, then a steam channel of the evaporator 5 is communicated with the high-temperature heat exchanger 6, a steam channel of the compressor 2 is communicated with the high-temperature heat exchanger 6, a steam channel of the high-temperature heat exchanger 6 is also communicated with a steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 5 and then divided into two paths, namely a first path is communicated with the compressor 2 and a second path is communicated with the condenser 4, the condenser 4 is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger 9 is also provided with the heat source medium channel which is communicated with the outside, the steam turbine 1 is connected with the compressor 2 and transmits power, and the gas turbine 8 is connected with the second compressor 7 and transmits power.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the external air flows through the second compressor 7 to be boosted and heated, flows through the high-temperature heat regenerator 11 and the heat source heat exchanger 9 to gradually absorb heat and be heated, and then enters the combustion chamber 10; the external fuel enters the combustion chamber 10, is mixed with the compressed air from the heat source heat exchanger 9 and is combusted into high-temperature and high-pressure fuel gas; the high-temperature high-pressure fuel gas generated by the combustion chamber 10 flows through the gas turbine 8 to reduce pressure and do work, flows through the high-temperature heat regenerator 11 and the high-temperature heat exchanger 6 to gradually release heat and reduce temperature, and is discharged outwards to form the dual-heat-source fuel gas-steam combined cycle power device.
The dual heat source gas-steam combined cycle power plant shown in fig. 3 is realized by:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber 10 through a second compressor 7, a heat source heat exchanger 9 and a high-temperature heat regenerator 11, a fuel channel is arranged outside and is communicated with the combustion chamber 10, a fuel channel is also arranged outside and is communicated with the combustion chamber 10, the combustion chamber 10 is also provided with a fuel gas channel and is communicated with the outside through a gas turbine 8, the high-temperature heat regenerator 11 and the high-temperature heat exchanger 6, a condensate pipeline of a condenser 4 is communicated with an evaporator 5 through a booster pump 3, then a steam channel of the evaporator 5 is communicated with the high-temperature heat exchanger 6, a steam channel of the compressor 2 is communicated with the high-temperature heat exchanger 6, the steam channel of the high-temperature heat exchanger 6 is also communicated with a steam turbine 1, the steam turbine 1 is also divided into two paths after being communicated with the evaporator 5, namely, the first path is communicated with the compressor 2 and the second path is communicated with the condenser 4, the condenser 4 is also provided with a cooling medium channel communicated with the outside, the heat source heat exchanger 9 is also provided with a heat source medium channel communicated with the outside, the steam turbine 1 is connected with the compressor 2 and transmits power, and the gas turbine 8 is connected with the second compressor 7 and transmits power.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the external air flows through the second compressor 7 to be boosted and heated, flows through the heat source heat exchanger 9 and the high-temperature heat regenerator 11 to gradually absorb heat and be heated, and then enters the combustion chamber 10; external fuel enters the combustion chamber 10, is mixed with compressed air from the high-temperature heat regenerator 11 and is combusted into high-temperature and high-pressure fuel gas; the high-temperature high-pressure fuel gas generated by the combustion chamber 10 flows through the gas turbine 8 to reduce pressure and do work, flows through the high-temperature heat regenerator 11 and the high-temperature heat exchanger 6 to gradually release heat and reduce temperature, and is discharged outwards to form the dual-heat-source fuel gas-steam combined cycle power device.
The dual heat source gas-steam combined cycle power plant shown in fig. 4 is realized by:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber 10 through a second compressor 7, a high-temperature heat regenerator 11 and a heat source heat exchanger 9, a fuel channel is arranged outside and is communicated with the combustion chamber 10, the combustion chamber 10 is also provided with a gas channel which is communicated with a gas turbine 8, then the gas turbine 8 is communicated with the gas turbine 8 through the high-temperature heat regenerator 11, the gas turbine 8 is also provided with a gas channel which is communicated with the outside through the high-temperature heat exchanger 6, a condenser 4 is provided with a condensate pipeline which is communicated with an evaporator 5 through a booster pump 3, then the evaporator 5 is provided with a steam channel which is communicated with the high-temperature heat exchanger 6, the compressor 2 is provided with a steam channel which is communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is also provided with a steam channel which is communicated with a steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 5 and then divided into two channels, namely, the first channel is communicated with the compressor 2 and the second channel is communicated with the condenser 4, the condenser 4 is also provided with the cooling medium channel which is communicated with the outside, the heat source heat exchanger 9 is communicated with the outside, the steam turbine 1 is connected with the compressor 2 and transmits power, and the gas turbine 8 is connected with the second compressor 7 and transmits power.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the external air flows through the second compressor 7 to be boosted and heated, flows through the high-temperature heat regenerator 11 and the heat source heat exchanger 9 to gradually absorb heat and be heated, and then enters the combustion chamber 10; the external fuel enters the combustion chamber 10, is mixed with the compressed air from the heat source heat exchanger 9 and is combusted into high-temperature and high-pressure fuel gas; high-temperature and high-pressure gas generated by the combustion chamber 10 enters the gas turbine 8 to perform pressure reduction work to a certain degree, then flows through the high-temperature heat regenerator 11 to release heat and reduce temperature, and then enters the gas turbine 8 to perform pressure reduction work continuously; and the gas discharged by the gas turbine 8 is discharged through the high-temperature heat exchanger 6 to reduce the temperature and then discharged outwards, so that the double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 5 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber 10 through a second compressor 7, a heat source heat exchanger 9 and a high-temperature heat regenerator 11, a fuel channel is arranged outside and is communicated with the combustion chamber 10, the combustion chamber 10 is also provided with a gas channel which is communicated with a gas turbine 8, then the gas turbine 8 is further provided with a gas channel which is communicated with the gas turbine 8 through the high-temperature heat regenerator 11, the gas turbine 8 is also provided with a gas channel which is communicated with the outside through the high-temperature heat exchanger 6, a condenser 4 is provided with a condensate pipeline which is communicated with an evaporator 5 through a booster pump 3, then a steam channel which is further communicated with the high-temperature heat exchanger 6 is arranged on the evaporator 5, the high-temperature heat exchanger 6 is also provided with a steam channel which is communicated with a steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 5 and then divided into two paths, namely a first path which is communicated with the compressor 2 and a second path which is communicated with the condenser 4, the condenser 4 is also provided with the cooling medium channel which is communicated with the outside, the heat source heat exchanger 9 is also provided with the heat source which is communicated with the outside, the steam turbine 1 is connected with the compressor 2 and transmits power, and the gas turbine 8 is connected with the second compressor 7 and transmits power.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the external air passes through the second compressor 7 to be boosted and heated, passes through the heat source heat exchanger 9 and the high-temperature heat regenerator 11 to gradually absorb heat and be heated, and then enters the combustion chamber 10; external fuel enters the combustion chamber 10, is mixed with compressed air from the high-temperature heat regenerator 11 and is combusted into high-temperature and high-pressure fuel gas; high-temperature and high-pressure gas generated by the combustion chamber 10 enters the gas turbine 8 to perform pressure reduction work, flows through the high-temperature heat regenerator 11 to release heat and reduce temperature after reaching a certain degree, and then enters the gas turbine 8 to continue to perform pressure reduction work; and the gas discharged by the gas turbine 8 is discharged through the high-temperature heat exchanger 6 to reduce the temperature and then discharged outwards, so that the double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 6 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and communicated with a second compressor 7, then the second compressor 7 is further communicated with the second compressor 7 through a high-temperature regenerator 11, the second compressor 7 is further communicated with a combustion chamber 10 through a heat source heat exchanger 9, a fuel channel is further arranged outside and communicated with the combustion chamber 10, the combustion chamber 10 is further provided with a fuel gas channel and communicated with the outside through a gas turbine 8, the high-temperature regenerator 11 and the high-temperature heat exchanger 6, a condenser 4 is provided with a condensate pipeline communicated with the evaporator 5 through a booster pump 3, then a steam channel of the evaporator 5 is further communicated with the high-temperature heat exchanger 6, the compressor 2 is provided with a steam channel communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is further provided with a steam channel communicated with the steam turbine 1, the steam turbine 1 is further provided with a low-pressure steam channel and divided into two paths after being communicated with the evaporator 5, namely a first path is communicated with the compressor 2 and a second path is communicated with the condenser 4, the condenser 4 is further provided with a cooling medium channel and communicated with the outside, the heat source medium channel of the turbine 9 is communicated with the outside, the heat source is communicated with the steam turbine 1 is connected with the compressor 2 and the turbine 1 is connected with the compressor 2 and transmits power, and the fuel gas 8 is connected with the second compressor 7 and transmits power.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the external air enters the second compressor 7, is subjected to pressure rise and temperature rise to a certain degree, then flows through the high-temperature heat regenerator 11 to absorb heat and raise the temperature, and then enters the second compressor 7 to continue to be subjected to pressure rise and temperature rise; the air discharged by the second compressor 7 passes through the heat source heat exchanger 9 to absorb heat and raise temperature, and then enters the combustion chamber 10; the external fuel enters the combustion chamber 10, is mixed with the compressed air from the heat source heat exchanger 9 and is combusted into high-temperature and high-pressure fuel gas; the high-temperature high-pressure fuel gas generated by the combustion chamber 10 flows through the gas turbine 8 to reduce pressure and do work, flows through the high-temperature heat regenerator 11 and the high-temperature heat exchanger 6 to gradually release heat and reduce temperature, and is discharged outwards to form the dual-heat-source fuel gas-steam combined cycle power device.
The dual heat source gas-steam combined cycle power plant shown in fig. 7 is realized by:
in the double-heat-source gas-steam combined cycle power plant shown in fig. 1, a gas channel is additionally arranged on the evaporator 5 to be communicated with the outside; the condensate of the condenser 4 flows through the booster pump 3, is boosted, then enters the evaporator 5, simultaneously absorbs the heat in the low-pressure steam from the steam turbine 1 and the fuel gas discharged from the high-temperature heat exchanger 6, is heated, evaporated and superheated, and then is supplied to the high-temperature heat exchanger 6, so that the double-heat-source fuel gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 8 is realized by:
(1) Structurally, in the double-heat-source gas-steam combined cycle power plant shown in fig. 1, a heat supply device is added, a low-pressure steam channel of a steam turbine 1 is communicated with an evaporator 5 and then divided into two paths, wherein the first path is communicated with a compressor 2, the second path is communicated with a condenser 4, the low-pressure steam channel of the steam turbine 1 is communicated with a heat supply device 12 and then divided into two paths, the first path is communicated with the compressor 2, the second path is communicated with the condenser 4, a heated medium channel of the heat supply device 12 is communicated with the outside, and the evaporator 5 is additionally provided with a gas channel which is communicated with the outside.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the condensate of the condenser 4 is boosted by the booster pump 3, passes through the evaporator 5 to absorb heat, raise temperature, vaporize and overheat, then enters the high-temperature heat exchanger 6 to absorb heat and raise temperature, and the steam discharged by the compressor 2 enters the high-temperature heat exchanger 6 to absorb heat and raise temperature; the steam discharged by the high-temperature heat exchanger 6 flows through the steam turbine 1 to reduce pressure and do work, the low-pressure steam discharged by the steam turbine 1 flows through the heat supply device 12 to release heat and reduce temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the compressor 2 to increase pressure and temperature, and the second path enters the condenser 4 to release heat and condense; a heat source medium and fuel jointly provide driving heat load through a heat source heat exchanger 99 and a two-stage combustion chamber 10, a cooling medium takes away low-temperature heat load through a condenser 4, air and fuel gas take away low-temperature heat load through an inlet and outlet flow, and a heated medium takes away medium-temperature heat load through a heat supply device 12; the work output by the steam turbine 1 and the gas turbine 8 is provided for the compressor 2, the second compressor 7 and the external actuating power, or the work output by the steam turbine 1 and the gas turbine 8 is provided for the compressor 2, the booster pump 3, the second compressor 7 and the external actuating power, so that a double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 9 is implemented as follows:
(1) Structurally, in the dual-heat-source gas-steam combined cycle power plant shown in fig. 1, a medium-temperature heat regenerator is added, a steam channel of an evaporator 5 is communicated with a high-temperature heat exchanger 6 and adjusted to be communicated with the evaporator 5, a steam channel of the evaporator 5 is communicated with the high-temperature heat exchanger 6 through the medium-temperature heat regenerator 13, a steam channel of a compressor 2 is communicated with the high-temperature heat exchanger 6 and adjusted to be communicated with the compressor 2, a steam channel of the compressor 2 is communicated with the high-temperature heat exchanger 6 through the medium-temperature heat regenerator 13, and a low-pressure steam channel of a steam turbine 1 is communicated with the evaporator 5 and adjusted to be communicated with the low-pressure steam channel of the steam turbine 1 through the medium-temperature heat regenerator 13.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the condensate of the condenser 4 is boosted by the booster pump 3, absorbed by the evaporator 5, heated and vaporized, absorbed by the medium-temperature heat regenerator 13 and heated continuously, and then enters the high-temperature heat exchanger 6 to absorb heat and raise the temperature; the steam discharged by the compressor 2 flows through the medium-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 6 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 6 flows through the steam turbine 1 to reduce pressure and work, the low-pressure steam discharged by the steam turbine 1 flows through the medium-temperature heat regenerator 13 and the evaporator 5 to gradually release heat and reduce temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the compressor 2 to increase pressure and temperature, and the second path enters the condenser 4 to release heat and condense, so that the double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 10 is realized by:
(1) Structurally, in the dual-heat-source gas-steam combined cycle power plant shown in fig. 1, a middle-temperature heat regenerator is added, a steam channel of an evaporator 5 is communicated with a high-temperature heat exchanger 6 and adjusted to be communicated with the evaporator 5, a steam channel of the evaporator 5 is communicated with the high-temperature heat exchanger 6 through the middle-temperature heat regenerator 13, a steam channel of a compressor 2 is communicated with the high-temperature heat exchanger 6 and adjusted to be communicated with the compressor 2, a steam channel of the compressor 2 is communicated with the high-temperature heat exchanger 6 through the middle-temperature heat regenerator 13, a low-pressure steam channel of a steam turbine 1 is communicated with the evaporator 5 and adjusted to be communicated with the steam channel of the steam turbine 1 through the middle-temperature heat regenerator 13, and then the low-pressure steam channel of the steam turbine 1 is communicated with the evaporator 5.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the condensate of the condenser 4 flows through the booster pump 3 to be boosted, flows through the evaporator 5 to absorb heat, is heated and vaporized, flows through the medium-temperature heat regenerator 13 to continuously absorb heat, and then enters the high-temperature heat exchanger 6 to absorb heat and be heated; the steam discharged by the compressor 2 flows through the medium-temperature heat regenerator 13 to absorb heat and raise the temperature, and then enters the high-temperature heat exchanger 6 to absorb heat and raise the temperature; the steam discharged by the high-temperature heat exchanger 6 enters the steam turbine 1 to reduce pressure and do work to a certain degree, then flows through the medium-temperature heat regenerator 13 to release heat and reduce temperature, and then enters the steam turbine 1 to continue reducing pressure and do work; low-pressure steam discharged by the steam turbine 1 flows through the evaporator 5 to release heat and reduce the temperature, and then is divided into two paths, wherein the first path enters the compressor 2 to increase the pressure and the temperature, and the second path enters the condenser 4 to release heat and condense, so that the double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 11 is realized by:
(1) Structurally, in the dual-heat-source gas-steam combined cycle power plant shown in fig. 1, a second booster pump and a low-temperature heat regenerator are added, the communication between a condensate pipeline of the condenser 4 and the booster pump 3 is adjusted to be that the condenser 4 has a condensate pipeline communicated with the low-temperature heat regenerator 15 through a second booster pump 14, the compressor 2 is provided with a steam extraction channel communicated with the low-temperature heat regenerator 15, and the low-temperature heat regenerator 15 is further provided with a condensate pipeline communicated with the booster pump 3.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the condensate discharged by the condenser 4 flows through the second booster pump 14 to be boosted and then enters the low-temperature heat regenerator 15 to be mixed with the extracted steam from the compressor 2, absorb heat and raise temperature, and the extracted steam releases heat to form condensate; the condensate of the low-temperature heat regenerator 15 flows through the booster pump 3 to be boosted, flows through the evaporator 5 to absorb heat, raise temperature, vaporize and overheat, then enters the high-temperature heat exchanger 6 to absorb heat and raise temperature, and the steam discharged by the compressor 2 enters the high-temperature heat exchanger 6 to absorb heat and raise temperature; the steam discharged by the high-temperature heat exchanger 6 flows through the steam turbine 1 to reduce pressure and do work, the low-pressure steam discharged by the steam turbine 1 flows through the evaporator 5 to release heat and reduce temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the compressor 2 to increase pressure and temperature, and the second path enters the condenser 4 to release heat and condense; the low-pressure steam entering the compressor 2 is subjected to pressure boosting and temperature rising to a certain degree and then divided into two paths, wherein the first path is provided for the low-temperature heat regenerator 15, and the second path is subjected to pressure boosting and temperature rising continuously and then enters the high-temperature heat exchanger 6 to form the double-heat-source gas-steam combined cycle power device.
The dual heat source gas-steam combined cycle power plant shown in fig. 12 is realized by:
in the double-heat-source gas-steam combined cycle power plant shown in fig. 1, a high-temperature heat exchanger 6 with a steam channel communicated with a steam turbine 1 is adjusted to be that the high-temperature heat exchanger 6 with a steam channel communicated with the steam turbine 1 through a heat source heat exchanger 9; the steam discharged by the high-temperature heat exchanger 6 flows through the heat source heat exchanger 9 to absorb heat and raise temperature, and then enters the steam turbine 1 to reduce pressure and do work, so that the double-heat-source gas-steam combined cycle power device is formed.
The dual heat source gas-steam combined cycle power plant shown in fig. 13 is realized by:
(1) Structurally, in the dual-heat-source gas-steam combined cycle power plant shown in fig. 1, an expansion speed increaser 16 is added to replace the steam turbine 1, a dual-energy compressor 17 is added to replace the compressor 2, and a diffuser 18 is added to replace the booster pump 3.
(2) Compared with the double-heat-source gas-steam combined cycle power plant shown in the figure 1, the difference in the flow is that: the condensate of the condenser 4 flows through the diffuser pipe 18 for speed reduction and pressure increase, flows through the evaporator 5 for heat absorption, temperature rise, vaporization and overheating, then enters the high-temperature heat exchanger 6 for heat absorption and temperature rise, and the steam discharged by the dual-energy compressor 17 enters the high-temperature heat exchanger 6 for heat absorption and temperature rise; the steam discharged by the high-temperature heat exchanger 6 flows through the expansion speed increaser 16 to reduce the pressure, do work and increase the speed, the low-pressure steam discharged by the expansion speed increaser 16 flows through the evaporator 5 to release heat and reduce the temperature, and then is divided into two paths, wherein the first path enters the dual-energy compressor 17 to increase the pressure, raise the temperature and reduce the speed, and the second path enters the condenser 4 to release heat and condense; work output by the expansion speed increaser 16 and the gas turbine 8 is provided for the second compressor 7, the dual-energy compressor 17 and external acting power to form a dual-heat-source gas-steam combined cycle power plant.
The dual heat source gas-steam combined cycle power plant shown in fig. 13 is realized by:
in the double-heat-source gas-steam combined cycle power device shown in FIG. 1, a high-temperature heat exchanger 6 is additionally provided with a heat source medium channel communicated with the outside; the heat source medium provides driving heat load through the heat source heat exchanger 9 and the high-temperature heat exchanger 6 to form a double-heat-source gas-steam combined cycle power plant.
The effect that the technology of the invention can realize-the double heat source gas-steam combined cycle power device provided by the invention has the following effects and advantages:
(1) The high-temperature heat resource and the fuel are reasonably matched to jointly build a driving heat source; the high-temperature heat resource exerts a fuel effect, and the utilization value of converting the high-temperature heat resource into mechanical energy is greatly improved.
(2) The high-temperature driving heat load constructed by the high-temperature heat resource and the fuel is utilized in a grading manner, the irreversible loss caused by temperature difference is obviously reduced, and the heat power change efficiency is effectively improved.
(3) The high-temperature heat resource finishes the temperature increase of the compressed air, and the irreversible temperature difference loss in the fuel combustion process is effectively reduced.
(4) The high-temperature heat resources are deeply utilized, and the energy/waste heat utilization efficiency is effectively improved.
(5) The high-temperature heat resource can be used for/is beneficial to reducing the compression ratio of the top gas turbine circulating system, improving the flow of gas circulating working medium and increasing the load of a power device.
(6) The range of driving energy sources used by the gas-steam combined cycle power device is effectively expanded, and the energy consumption cost of the device is reduced.
(7) The fuel utilization value is obviously improved, the greenhouse gas emission is reduced, the pollutant emission is reduced, and the energy-saving and emission-reducing benefits are remarkable.
(8) Simple structure, reasonable flow, rich scheme, and is favorable to lowering the manufacture cost of the device and expanding the application range of the technology.

Claims (14)

1. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger and a combustion chamber; an air channel is arranged outside and communicated with a combustion chamber (10) through a second compressor (7) and a heat source heat exchanger (9), a fuel channel is arranged outside and communicated with the combustion chamber (10), a fuel channel is also arranged outside and communicated with the combustion chamber (10), a gas channel is also arranged in the combustion chamber (10) and communicated with the outside through a gas turbine (8) and a high-temperature heat exchanger (6), a condenser (4) is provided with a condensate pipeline which is communicated with an evaporator (5) through a booster pump (3), then the evaporator (5) is further provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is further provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is further provided with a low-pressure steam channel which is communicated with the evaporator (5) and then divided into two paths, namely a first path is communicated with the compressor (2) and a second path is communicated with the condenser (4), the condenser (4) is further provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (9) is further provided with a heat source medium channel which is communicated with the outside, the steam turbine (1) is connected with the compressor (2) and transmits power, the second compressor (8) and a double-steam combined power cycle device is formed.
2. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber (10) through a second compressor (7), a high-temperature heat regenerator (11) and a heat source heat exchanger (9), a fuel channel is also arranged outside and is communicated with the combustion chamber (10), the combustion chamber (10) is also provided with a gas channel and is communicated with the outside through a gas turbine (8), the high-temperature heat regenerator (11) and the high-temperature heat exchanger (6), a condenser (4) is provided with a condensate pipeline which is communicated with an evaporator (5) through a booster pump (3), then the evaporator (5) is provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the compressor (2) is provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (5) and then divided into two paths, namely a first path is communicated with the compressor (2) and a second path is communicated with the condenser (4), the condenser (4) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (9) is also provided with the heat source heat exchanger (1), the heat source heat exchanger (8) is connected with the power transmission device, and forms a double-gas power cycle power transmission device.
3. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber (10) through a second compressor (7), a heat source heat exchanger (9) and a high-temperature heat regenerator (11), a fuel channel is also arranged outside and is communicated with the combustion chamber (10), the combustion chamber (10) is also provided with a gas channel and is communicated with the outside through a gas turbine (8), the high-temperature heat regenerator (11) and the high-temperature heat exchanger (6), a condenser (4) is provided with a condensate pipeline which is communicated with an evaporator (5) through a booster pump (3), then the evaporator (5) is provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the compressor (2) is provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (5) and then divided into two paths, namely, the first path is communicated with the compressor (2) and the second path is communicated with the condenser (4), the condenser (4) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (9) is also provided with the outside and is also provided with a heat source heat exchanger (7) which is connected with the compressor (1), the power transmission device, and a double-gas power cycle power transmission device is formed.
4. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber (10) through a second compressor (7), a high-temperature regenerator (11) and a heat source heat exchanger (9), the external part is also provided with a fuel channel communicated with a combustion chamber (10), the combustion chamber (10) is also provided with a gas channel communicated with a gas turbine (8), then the gas turbine (8) is further provided with a gas channel communicated with the gas turbine (8) through a high-temperature heat exchanger (6), a condenser (4) is provided with a condensate pipeline communicated with an evaporator (5) through a booster pump (3), then the evaporator (5) is further provided with a steam channel communicated with the high-temperature heat exchanger (6), the compressor (2) is further provided with a steam channel communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is further provided with a steam channel communicated with a steam turbine (1), the steam turbine (1) is further provided with a low-pressure steam channel communicated with the evaporator (5) and then divided into two paths, wherein the first path is communicated with the compressor (2) and the second path is communicated with the condenser (4), the condenser (4) is further provided with a cooling medium channel communicated with the external part, the heat source heat exchanger (9) is further provided with a heat source medium channel communicated with the external part, the steam turbine (1) is connected with the compressor (2) and transmits power, the gas turbine (8) is connected with the second compressor (7) and forms a double-steam power transmission device.
5. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and is communicated with a combustion chamber (10) through a second compressor (7), a heat source heat exchanger (9) and a high-temperature regenerator (11), the external part is also provided with a fuel channel which is communicated with a combustion chamber (10), the combustion chamber (10) is also provided with a gas channel which is communicated with a gas turbine (8), then the gas turbine (8) is communicated with the external part through a high-temperature heat exchanger (6), a condenser (4) is provided with a condensate pipeline which is communicated with an evaporator (5) through a booster pump (3), then a steam channel of the evaporator (5) is communicated with the high-temperature heat exchanger (6), a compressor (2) is provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is also provided with a steam channel which is communicated with a steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (5) and then divided into two paths, namely a first path is communicated with the compressor (2) and a second path is communicated with the condenser (4), the condenser (4) is also provided with a cooling medium channel which is communicated with the external part, the heat source heat exchanger (9) is also provided with a heat source medium channel which is communicated with the external part, the steam turbine (1) is connected with the compressor (2) and transmits power, the gas turbine (8) is connected with a second path and a power source-compressor (7) and forms a combined power cycle device.
6. The double-heat-source gas-steam combined cycle power plant mainly comprises a steam turbine, a compressor, a booster pump, a condenser, an evaporator, a high-temperature heat exchanger, a second compressor, a gas turbine, a heat source heat exchanger, a combustion chamber and a high-temperature heat regenerator; an air channel is arranged outside and communicated with a second compressor (7), then the second compressor (7) is communicated with the second compressor through a high-temperature regenerator (11), the second compressor (7) is also communicated with a combustion chamber (10) through a heat source heat exchanger (9), a fuel channel is also arranged outside and communicated with the combustion chamber (10), the combustion chamber (10) is also provided with a gas channel which is communicated with the outside through a gas turbine (8), the high-temperature regenerator (11) and the high-temperature heat exchanger (6), a condenser (4) is provided with a condensate pipeline which is communicated with an evaporator (5) through a booster pump (3), then the evaporator (5) is further provided with a steam channel which is communicated with the high-temperature heat exchanger (6), a compressor (2) is provided with a steam channel which is communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is also provided with a steam channel which is communicated with a steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (5) and then divided into two paths, the first path is communicated with the compressor (2) and the second path which is communicated with the condenser (4), the condenser (4) is also provided with a cooling medium channel which is communicated with the outside, the external heat source heat exchanger (9) and is connected with the heat source (8), and connected with the heat source heat exchanger (7), forming a double-heat-source gas-steam combined cycle power plant.
7. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices disclosed in claims 1-6, a gas channel is additionally arranged on an evaporator (5) and communicated with the outside to form the double-heat-source gas-steam combined cycle power device.
8. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices disclosed by claims 1 to 6, a heat supply device is additionally arranged, a low-pressure steam channel of a steam turbine (1) is communicated with an evaporator (5) and then divided into two paths, wherein the first path is communicated with a compressor (2), the second path is communicated with a condenser (4), the steam turbine (1) is adjusted to be provided with the low-pressure steam channel to be communicated with a heat supply device (12) and then divided into two paths, the first path is communicated with the compressor (2), the second path is communicated with the condenser (4), the heat supply device (12) is also provided with a heated medium channel to be communicated with the outside, and a gas channel or a heat source medium channel additionally arranged on the evaporator (5) is communicated with the outside to form the double-heat-source gas-steam combined cycle power device.
9. A double-heat-source gas-steam combined cycle power device is characterized in that a middle-temperature heat regenerator is added in any one of double-heat-source gas-steam combined cycle power devices of claims 1 to 7, a steam channel of an evaporator (5) is communicated with a high-temperature heat exchanger (6) and adjusted to be communicated with the high-temperature heat exchanger (6) through the middle-temperature heat regenerator (13), a steam channel of a compressor (2) is communicated with the high-temperature heat exchanger (6) and adjusted to be communicated with the high-temperature heat exchanger (6) through the middle-temperature heat regenerator (13), a low-pressure steam channel of a steam turbine (1) is communicated with the evaporator (5) and adjusted to be communicated with the low-pressure steam channel of the steam turbine (1) and the evaporator (5) through the middle-temperature heat regenerator (13), and the double-heat-source gas-steam combined cycle power device is formed.
10. A double-heat-source gas-steam combined cycle power device is characterized in that a middle-temperature heat regenerator is added in any one of double-heat-source gas-steam combined cycle power devices of claims 1 to 7, a steam channel of an evaporator (5) is communicated with a high-temperature heat exchanger (6) and adjusted to be communicated with the high-temperature heat exchanger (6) through the middle-temperature heat regenerator (13), a steam channel of a compressor (2) is communicated with the high-temperature heat exchanger (6) and adjusted to be communicated with the high-temperature heat exchanger (6) through the middle-temperature heat regenerator (13), a steam channel of a steam turbine (1) is communicated with the evaporator (5) through a low-pressure steam channel of the steam turbine (1) and adjusted to be communicated with the steam channel of the steam turbine (1) through the middle-temperature heat regenerator (13), and then the steam channel of the steam turbine (1) is communicated with the evaporator (5) to form the double-heat-source gas-steam combined cycle power device.
11. A double-heat-source gas-steam combined cycle power device is characterized in that a second booster pump and a low-temperature heat regenerator are added in the double-heat-source gas-steam combined cycle power device as claimed in any one of claims 1 to 10, a condenser (4) is communicated with the booster pump (3) through a condensate pipeline, the condenser (4) is adjusted to be communicated with the low-temperature heat regenerator (15) through a condensate pipeline via the second booster pump (14), a steam extraction channel of a compressor (2) is communicated with the low-temperature heat regenerator (15), and the low-temperature heat regenerator (15) is further communicated with the booster pump (3) through a condensate pipeline, so that the double-heat-source gas-steam combined cycle power device is formed.
12. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices disclosed by claims 1-11, a high-temperature heat exchanger (6) is provided with a steam channel to be communicated with a steam turbine (1), and the high-temperature heat exchanger (6) is provided with a steam channel to be communicated with the steam turbine (1) through a heat-source heat exchanger (9), so that the double-heat-source gas-steam combined cycle power device is formed.
13. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices in claims 1-12, an expansion speed increaser (16) is added to replace a steam turbine (1), a double-energy compressor (17) is added to replace a compressor (2), a diffuser pipe (18) is added to replace a booster pump (3), and the double-heat-source gas-steam combined cycle power device is formed.
14. A double-heat-source gas-steam combined cycle power device is characterized in that in any one of the double-heat-source gas-steam combined cycle power devices in claims 1-13, a high-temperature heat exchanger (6) is additionally provided with a heat source medium channel communicated with the outside to form the double-heat-source gas-steam combined cycle power device.
CN202210696240.4A 2021-05-24 2022-05-23 Double-heat source gas-steam combined cycle power device Pending CN115387871A (en)

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CN202110611573 2021-05-24

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