CN115405388A - Double-heat-source combined cycle power device - Google Patents

Double-heat-source combined cycle power device Download PDF

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Publication number
CN115405388A
CN115405388A CN202210709053.5A CN202210709053A CN115405388A CN 115405388 A CN115405388 A CN 115405388A CN 202210709053 A CN202210709053 A CN 202210709053A CN 115405388 A CN115405388 A CN 115405388A
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China
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communicated
heat
channel
evaporator
combustion chamber
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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 combined cycle power device, and belongs to the technical field of combined cycle heat power. The condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator, an air channel is arranged outside and is communicated with the combustion chamber through a compressor and the heat source heat exchanger, a fuel channel is arranged outside and 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 also provided with a gas channel which is communicated with the outside through the evaporator, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the double-heat-source combined cycle power device.

Description

Double-heat-source combined cycle power device
The technical field is as follows:
the invention belongs to the technical field of combined cycle heat power.
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 that fuel is independently used as driving heat energy of a thermal power device through combustion, and high-temperature waste heat is independently used as driving heat energy of the thermal power device, a system for converting the heat energy into mechanical energy often has large irreversible loss of temperature difference, especially the irreversible loss of 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 direct-fired double-heat-source combined cycle power device reasonably matches and uses the heat source medium (high-temperature waste heat) and the fuel, achieves the purpose of getting strong points and making up weak points and complementing advantages, 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 combined cycle power device, and the specific contents of the invention are explained in the following sections:
1. the double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser and an evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator, an air channel is arranged outside and is communicated with the combustion chamber through a compressor and the heat source heat exchanger, a fuel channel is arranged outside and is communicated with the combustion chamber, a gas channel is also arranged outside and is communicated with the gas turbine, the gas turbine is also provided with a gas channel which is communicated with the outside through the evaporator, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the double-heat-source combined cycle power device.
2. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, the condenser is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator, an air channel is arranged outside and is communicated with the combustion chamber through a compressor, a high-temperature heat regenerator and the heat source heat exchanger, a fuel channel is arranged outside and 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 also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator and the evaporator, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the double-heat source combined cycle power device.
3. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, the evaporator is communicated with the evaporator through a booster pump, a steam channel is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine is also provided with a low-pressure steam channel, the low-pressure steam channel is communicated with the condenser through the evaporator, an air channel is arranged outside and is communicated with the combustion chamber through a compressor, a high-temperature heat regenerator and the heat source heat exchanger, a fuel channel is arranged outside and is communicated with the combustion chamber, the combustion chamber is also provided with a gas channel, the gas turbine is further provided with a gas channel, the gas channel is communicated with the outside through the high-temperature heat regenerator, the heat source heat exchanger is further provided with a heat source medium channel, the condenser is further provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the double-heat-source combined cycle power device.
4. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline, the evaporator is communicated with the evaporator through a booster pump, a steam channel is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine is also provided with a low-pressure steam channel, the low-pressure steam channel is communicated with the condenser through the evaporator, an air channel is arranged outside and is communicated with the combustion chamber through a compressor, the heat source heat exchanger and a high-temperature regenerator, a fuel channel is arranged outside and is communicated with the combustion chamber, the combustion chamber is also provided with a gas channel, the gas turbine is further provided with a gas channel, the gas channel is communicated with the outside through the high-temperature regenerator, the heat source heat exchanger is further provided with a heat source medium channel, the condenser is further provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the double-heat-source combined cycle power device.
5. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through an evaporator, after an external air channel is communicated with the compressor, the compressor is provided with an air channel which is communicated with the compressor through a high-temperature heat regenerator, the compressor is also provided with an air channel which is communicated with the combustion chamber through the heat source heat exchanger, a fuel channel is also arranged on the external, the combustion chamber is also provided with a gas channel which is communicated with a gas turbine, the gas turbine is also provided with a gas channel which is communicated with the external through the high-temperature heat regenerator and the evaporator, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the external, the condenser is also provided with a cooling medium channel which is communicated with the external, and the gas turbine is connected with the compressor and transmits power, so that the double-heat source combined cycle power device is formed.
6. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser has a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator has a steam channel which is communicated with a steam turbine through a heat source heat exchanger and a combustion chamber, the steam turbine also has a low-pressure steam channel which is communicated with the condenser through the evaporator, after an external air channel is communicated with the compressor, the compressor has an air channel which is communicated with the compressor through a high-temperature heat regenerator, the compressor also has an air channel which is communicated with the combustion chamber through the heat source heat exchanger, the external fuel channel is communicated with the combustion chamber, after the combustion chamber also has a gas channel which is communicated with the gas turbine, the gas turbine also has a gas channel which is communicated with the compressor through the high-temperature heat regenerator, the gas turbine also has a gas channel which is communicated with the external through the evaporator, the heat source heat exchanger also has a heat source medium channel which is communicated with the external, the condenser also has a cooling medium channel which is communicated with the external, and the gas turbine is connected with the compressor and transmits power, thus forming the double-heat-source combined cycle power plant.
7. A double-heat-source combined cycle power device is characterized in that in any one of the double-heat-source combined cycle power devices 1-6, a heat source medium channel is additionally arranged on an evaporator and communicated with the outside to form the double-heat-source combined cycle power device.
8. A double-heat-source 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 combined cycle power devices in items 1-7, a condenser with a condensate pipeline communicated with an evaporator through the booster pump is adjusted to be a condenser with a condensate pipeline communicated with the low-temperature heat regenerator through the second booster pump, a middle steam extraction channel is additionally arranged on a steam turbine to be communicated with the low-temperature heat regenerator, and the low-temperature heat regenerator is provided with a condensate pipeline communicated with the evaporator through the booster pump, so that the double-heat-source combined cycle power device is formed.
9. A double-heat-source combined cycle power device is characterized in that in any one of the double-heat-source combined cycle power devices 1-7, an expansion speed increaser is added to replace a steam turbine, a diffuser pipe is added to replace a booster pump, and the double-heat-source combined cycle power device is formed.
Description of the drawings:
FIG. 1 is a schematic thermodynamic system diagram of the 1 st embodiment of a dual heat source combined cycle power plant according to the present invention.
FIG. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a dual heat source combined cycle power plant provided in accordance with the present invention.
FIG. 3 is a schematic diagram of a principal thermodynamic system of type 3 of a dual heat source 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 dual heat source 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 dual heat source combined 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 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 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 dual heat source 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 combined cycle power plant provided in accordance with the present invention.
In the figure, 1-compressor, 2-gas turbine, 3-steam turbine, 4-booster pump, 5-heating furnace, 6-combustion chamber, 7-heat source regenerator, 8-condenser, 9-evaporator (waste heat boiler), 10-high temperature regenerator, 11-second booster pump, 12-low temperature regenerator, 13-expansion speed increaser, and 14-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 procedures are not described. The invention is described in detail below with reference to the figures and examples.
The dual heat source combined cycle power plant shown in fig. 1 is implemented as follows:
(1) Structurally, the system mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser and an evaporator; the condenser 7 is provided with a condensate pipeline, the condenser 8 is communicated with the evaporator 8 through a booster pump 4, a steam channel of the evaporator 8 is communicated with the steam turbine 3 through a heat source heat exchanger 5 and a combustion chamber 6, the steam turbine 3 is also provided with a low-pressure steam channel, the evaporator 8 is communicated with the condenser 7, an air channel outside is communicated with the combustion chamber 6 through a compressor 1 and the heat source heat exchanger 5, a fuel channel outside is communicated with the combustion chamber 6, the combustion chamber 6 is also provided with a gas channel communicated with the gas turbine 2, the gas turbine 2 is also provided with a gas channel communicated with the outside through the evaporator 8, the heat source heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the condenser 7 is also provided with a cooling medium channel communicated with the outside, and the gas turbine 2 is connected with the compressor 1 and transmits power.
(2) In the flow, the external air flows through the compressor 1 to be boosted and heated, flows through the heat source heat exchanger 5 to absorb heat and be heated, and then enters the combustion chamber 6 to participate in combustion; external fuel enters the combustion chamber 6, and the fuel and the compressed air are mixed and combusted in the combustion chamber 6 to generate high-pressure and high-temperature fuel gas; the gas in the combustion chamber 6 releases heat to the steam flowing through the combustion chamber, then enters the gas turbine 2 to reduce pressure and do work, and the gas discharged by the gas turbine 2 is discharged outwards after being released heat and cooled by the evaporator 8; the condensate of the condenser 7 enters the evaporator 8 to absorb heat, raise temperature and vaporize after being boosted by the booster pump 4, continues to absorb heat after flowing through the heat source heat exchanger 5 and the combustion chamber 6, reduces pressure and does work after flowing through the steam turbine 3, releases heat and lowers temperature after flowing through the evaporator 8, and then enters the condenser 7 to release heat and condense; the fuel is communicated with the combustion chamber 6 to provide driving heat load, the heat source medium is provided with driving heat load through the heat source heat exchanger 5, the cooling medium takes away low-temperature heat load through the condenser 7, and air and fuel gas take away low-temperature heat load through the inlet and outlet flow; the gas turbine 2 and the steam turbine 3 supply power to the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 supply power to the compressor 1, the booster pump 4 and the outside, forming a dual heat source combined cycle power plant.
The dual heat source combined cycle power plant shown in fig. 2 is implemented as follows:
(1) Structurally, the heat pump air conditioner mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 7 is provided with a condensate pipeline, the condenser 8 is communicated with the evaporator 8 through a booster pump 4, a steam channel of the evaporator 8 is communicated with the steam turbine 3 through a heat source heat exchanger 5 and a combustion chamber 6, the steam turbine 3 is also provided with a low-pressure steam channel, the evaporator 8 is communicated with the condenser 7, an air channel outside is communicated with the combustion chamber 6 through a compressor 1, a high-temperature heat regenerator 9 and the heat source heat exchanger 5, a fuel channel outside is communicated with the combustion chamber 6, the combustion chamber 6 is also provided with a gas channel communicated with the gas turbine 2, the gas turbine 2 is also provided with a gas channel, the high-temperature heat regenerator 9 and the evaporator 8 are communicated with the outside, the heat source heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the condenser 7 is also provided with a cooling medium channel communicated with the outside, and the gas turbine 2 is connected with the compressor 1 and transmits power.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 1, the difference in the flow is that: the external air flows through the compressor 1 to be boosted and heated, flows through the high-temperature heat regenerator 9 and the heat source heat exchanger 5 to gradually absorb heat and be heated, and then enters the combustion chamber 6 to participate in combustion; external fuel enters the combustion chamber 6, and the fuel and the compressed air are mixed and combusted in the combustion chamber 6 to generate high-pressure and high-temperature fuel gas; the gas in the combustion chamber 6 releases heat to the steam flowing through the combustion chamber, then enters the gas turbine 2 to reduce pressure and do work, the gas discharged by the gas turbine 2 flows through the high-temperature heat regenerator 9 and the evaporator 8 to gradually release heat and reduce temperature, and then is discharged outwards to form the double-heat-source combined cycle power device.
The dual heat source combined cycle power plant shown in fig. 3 is implemented as follows:
(1) Structurally, the heat pump air conditioner mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 7 is provided with a condensate pipeline, the condenser 8 is communicated with the evaporator 8 through a booster pump 4, then a steam channel of the evaporator 8 is communicated with the steam turbine 3 through a heat source heat exchanger 5 and a combustion chamber 6, the steam turbine 3 is also provided with a low-pressure steam channel, the evaporator 8 is communicated with the condenser 7, an air channel outside is communicated with the combustion chamber 6 through a compressor 1, a high-temperature heat regenerator 9 and the heat source heat exchanger 5, a fuel channel outside is communicated with the combustion chamber 6, the combustion chamber 6 is also provided with a gas channel, the gas channel of the gas turbine 2 is communicated with the gas turbine 2 through the high-temperature heat regenerator 9, the gas turbine 2 is also provided with a gas channel, the heat source heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the condenser 7 is also provided with a cooling medium channel communicated with the outside, and the gas turbine 2 is connected with the compressor 1 and transmits power.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 1, the difference in the flow is that: the external air flows through the compressor 1 to be boosted and heated, flows through the high-temperature heat regenerator 9 and the heat source heat exchanger 5 to gradually absorb heat and be heated, and then enters the combustion chamber 6 to participate in combustion; external fuel enters the combustion chamber 6, and the fuel and the compressed air are mixed and combusted in the combustion chamber 6 to generate high-pressure high-temperature fuel gas; the combustion gas of the combustion chamber 6 releases heat to the steam flowing therethrough, and then is supplied to the gas turbine 2; the gas entering the gas turbine 2 is decompressed to work to a certain degree, then flows through the high-temperature heat regenerator 9 to release heat and cool, and enters the gas turbine 2 to continue to be decompressed to work; the gas discharged by the gas turbine 2 is discharged through the evaporator 8 to cool and then discharged to the outside, so that a double-heat-source combined cycle power plant is formed.
The dual heat source combined cycle power plant shown in fig. 4 is implemented as follows:
(1) Structurally, the heat pump air conditioner mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 7 is provided with a condensate pipeline, the condenser 8 is communicated with the evaporator 8 through a booster pump 4, then a steam channel of the evaporator 8 is communicated with the steam turbine 3 through a heat source heat exchanger 5 and a combustion chamber 6, the steam turbine 3 is also provided with a low-pressure steam channel, the evaporator 8 is communicated with the condenser 7, an air channel outside is communicated with the combustion chamber 6 through a compressor 1, the heat source heat exchanger 5 and a high-temperature heat regenerator 9, a fuel channel outside is communicated with the combustion chamber 6, the combustion chamber 6 is also provided with a gas channel, the gas channel of the gas turbine 2 is communicated with the gas turbine 2 through the high-temperature heat regenerator 9, the gas turbine 2 is also provided with a gas channel, the heat source heat exchanger 5 is also provided with a heat source medium channel, the condenser 7 is also provided with a cooling medium channel, the cooling medium channel is communicated with the outside, and the gas turbine 2 is connected with the compressor 1 and transmits power.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 1, the difference in the flow is that: the external air flows through the compressor 1 to be boosted and heated, flows through the heat source heat exchanger 5 and the high-temperature heat regenerator 9 to gradually absorb heat and be heated, and then enters the combustion chamber 6 to participate in combustion; external fuel enters the combustion chamber 6, and the fuel and the compressed air are mixed and combusted in the combustion chamber 6 to generate high-pressure high-temperature fuel gas; the combustion gas in the combustion chamber 6 releases heat to the steam flowing therethrough, and then is supplied to the gas turbine 2; the gas enters the gas turbine 2 to perform pressure reduction work to a certain degree, then flows through the high-temperature heat regenerator 9 to release heat and reduce temperature, and enters the gas turbine 2 to continue to perform pressure reduction work; the gas discharged by the gas turbine 2 is discharged through the evaporator 8 to cool and then discharged to the outside, so that a double-heat-source combined cycle power plant is formed.
The dual heat source combined cycle power plant shown in fig. 5 is implemented as follows:
(1) Structurally, the heat pump air conditioner mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 7 is provided with a condensate pipeline which is communicated with the evaporator 8 through a booster pump 4, then the evaporator 8 is provided with a steam channel which is communicated with the steam turbine 3 through a heat source heat exchanger 5 and a combustion chamber 6, the steam turbine 3 is also provided with a low-pressure steam channel which is communicated with the condenser 7 through the evaporator 8, after an air channel outside is communicated with the compressor 1, the air channel outside is communicated with the compressor 1, then the air channel outside is communicated with the compressor 1 through a high-temperature regenerator 9, the compressor 1 is also provided with an air channel which is communicated with the combustion chamber 6 through the heat source heat exchanger 5, a fuel channel outside is also communicated with the combustion chamber 6, the combustion chamber 6 is also provided with a fuel gas channel which is communicated with the gas turbine 2, the gas turbine 2 is also provided with a fuel gas channel outside through the high-temperature regenerator 9 and the evaporator 8, the heat source heat exchanger 5 is also provided with a heat source medium channel which is communicated with the outside, the condenser 7 is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine 2 is connected with the compressor 1 and transmits power.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 1, the difference in the flow is that: external air enters the compressor 1 to be boosted and heated to a certain degree, then flows through the high-temperature heat regenerator 9 to absorb heat and be heated, and enters the compressor 1 to be boosted and heated continuously; air discharged by the compressor 1 flows through the heat source heat exchanger 5 to absorb heat and raise temperature, and then enters the combustion chamber 6 to participate in combustion; external fuel enters the combustion chamber 6, and the fuel and the compressed air are mixed and combusted in the combustion chamber 6 to generate high-pressure high-temperature fuel gas; the gas in the combustion chamber 6 releases heat to the steam flowing through the combustion chamber, then enters the gas turbine 2 to reduce pressure and do work, the gas discharged by the gas turbine 2 flows through the high-temperature heat regenerator 9 and the evaporator 8 to gradually release heat and reduce temperature, and then is discharged outwards to form the double-heat-source combined cycle power device.
The dual heat source combined cycle power plant shown in fig. 6 is implemented as follows:
(1) Structurally, the heat pump air conditioner mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 7 has a condensate pipeline which is communicated with the evaporator 8 through a booster pump 4, then the evaporator 8 has a steam channel which is communicated with the steam turbine 3 through a heat source heat exchanger 5 and a combustion chamber 6, the steam turbine 3 also has a low-pressure steam channel which is communicated with the condenser 7 through the evaporator 8, after an air channel outside is communicated with the compressor 1, then the compressor 1 has an air channel which is communicated with the compressor 1, then the compressor 1 also has an air channel which is communicated with the combustion chamber 6 through the heat source heat exchanger 5, and a fuel channel outside is communicated with the combustion chamber 6, after the combustion chamber 6 also has a fuel channel which is communicated with the gas turbine 2, then a fuel channel outside is communicated with the gas turbine 2 through the high-temperature regenerator 9, the gas turbine 2 also has a fuel channel which is communicated with the outside through the evaporator 8, the heat source heat exchanger 5 also has a heat source medium channel which is communicated with the outside, the condenser 7 also has a cooling medium channel which is communicated with the outside, and the gas turbine 2 is connected with the compressor 1 and transmits power.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 1, the difference in the flow is that: external air enters the compressor 1 to be boosted and heated to a certain degree, then flows through the high-temperature heat regenerator 9 to absorb heat and be heated, and enters the compressor 1 to be boosted and heated continuously; compressed air discharged by the compressor 1 flows through the heat source heat exchanger 5 to absorb heat and raise temperature, and then enters the combustion chamber 6 to participate in combustion; external fuel enters the combustion chamber 6, the fuel and the compressed air are mixed and combusted in the combustion chamber 6 to generate high-pressure high-temperature fuel gas, and the fuel gas in the combustion chamber 6 releases heat to steam flowing through the combustion chamber and then is supplied to the gas turbine 2; the gas entering the gas turbine 2 is decompressed to work to a certain degree, then flows through the high-temperature heat regenerator 9 to release heat and cool, and enters the gas turbine 2 to continue to be decompressed to work; the gas discharged by the gas turbine 2 is discharged through the evaporator 8 to cool and then discharged to the outside, so that a double-heat-source combined cycle power plant is formed.
The dual heat source combined cycle power plant shown in fig. 7 is implemented as follows:
in the double-heat-source combined cycle power plant shown in fig. 1, a heat source medium passage is additionally arranged on the evaporator 8 to be communicated with the outside; the condensate of the condenser 7 flows through the booster pump 4, is boosted, then enters the evaporator 8, absorbs the heat energy respectively provided by the low-pressure steam, the fuel gas and the heat source medium, and then is heated and vaporized, and the double-heat-source combined cycle power device is formed.
The dual heat source combined cycle power plant shown in fig. 8 is implemented as follows:
(1) Structurally, in the dual-heat-source combined cycle power plant shown in fig. 2, a second booster pump and a low-temperature heat regenerator are added, a condensate pipeline of the condenser 7 is communicated with the evaporator 8 through the booster pump 4, the condensate pipeline of the condenser 7 is communicated with the low-temperature heat regenerator 11 through the second booster pump 10, a middle steam extraction channel of the steam turbine 3 is additionally arranged to be communicated with the low-temperature heat regenerator 11, and the low-temperature heat regenerator 11 is communicated with the evaporator 8 through the booster pump 4.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 2, the difference in the flow is that: the condensate of the condenser 7 is boosted by a second booster pump 10 and enters a low-temperature heat regenerator 11, the condensate is mixed with the extracted steam from the steam turbine 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 11 flows through the booster pump 4 to be boosted, flows through the evaporator 8 to absorb heat, is heated and vaporized, flows through the heat source heat exchanger 5 and the combustion chamber 6 to gradually absorb heat, and then is supplied to the steam turbine 3; the steam entering the steam turbine 3 is decompressed and does work to a certain degree and then is divided into two paths, wherein the first path enters the low-temperature heat regenerator 11, and the second path continues to be decompressed and does work, flows through the evaporator 8 to release heat and cool and enters the condenser 7 to release heat and condense; the gas turbine 2 and the steam turbine 3 provide power for the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 provide power for the compressor 1, the booster pump 4, the second booster pump 10 and the outside, so that a double-heat-source combined cycle power device is formed.
The dual heat source combined cycle power plant shown in fig. 9 is implemented as follows:
(1) Structurally, in the dual heat source combined cycle power plant shown in fig. 1, an expansion speed increasing machine 12 is added in place of the steam turbine 3, and a diffuser pipe 13 is added in place of the booster pump 4.
(2) Compared with the dual heat source combined cycle power plant shown in fig. 1, the difference in the flow is that: the condensate of the condenser 7 is reduced in speed and increased in pressure through the diffuser pipe 13, flows through the evaporator 8 to absorb heat, is heated and vaporized, flows through the heat source heat exchanger 5 and the combustion chamber 6 to continuously absorb heat gradually, flows through the expansion speed increasing machine 12 to reduce pressure, work and increase speed, flows through the evaporator 8 to release heat and reduce temperature, and then enters the condenser 7 to release heat and condense; the gas turbine 2 and the expansion speed increaser 12 power the compressor 1 and the outside to form a dual heat source combined cycle power plant.
The double-heat-source combined cycle power device provided by the invention has the following effects and advantages:
(1) The heat source medium and the fuel are reasonably matched, a driving heat source is built, and the thermodynamic perfection is improved.
(2) The heat source medium exerts a fuel effect, and the utilization value of converting the heat source medium into mechanical energy is greatly improved.
(3) The high-temperature driving heat load realizes graded utilization, the irreversible loss of temperature difference is obviously reduced, and the heat power change efficiency is effectively improved.
(4) The heat source medium is used for improving the parameters of compressed air, and the irreversible temperature difference loss in the fuel combustion process is effectively reduced.
(5) The heat source medium realizes deep utilization, and the energy/waste heat utilization efficiency is effectively improved.
(6) The heat source medium can be used for/is beneficial to reducing the compression ratio of a circulating system of the top gas turbine, improving the flow of the circulating working medium and increasing the load of a power device.
(7) The range of the combined cycle power device using driving energy is effectively expanded, and the energy consumption cost of the device is reduced.
(8) The utilization value of the fuel is improved, the emission of greenhouse gases and pollutants is reduced, and the energy-saving and emission-reducing benefits are remarkable.
(9) The device has the advantages of simple structure, reasonable flow, rich scheme and contribution to reducing the manufacturing cost of the device and expanding the technical application range.

Claims (9)

1. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser and an evaporator; the condenser (7) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (8) through a booster pump (4), then the evaporator (8) is further provided with a steam channel which is communicated with the steam turbine (3) through a heat source heat exchanger (5) and a combustion chamber (6), the steam turbine (3) is further provided with a low-pressure steam channel which is communicated with the condenser (7) through the evaporator (8), an external air channel is communicated with the combustion chamber (6) through a compressor (1) and the heat source heat exchanger (5), a fuel channel is further arranged outside and communicated with the combustion chamber (6), the combustion chamber (6) is further provided with a gas channel which is communicated with the gas turbine (2), the gas turbine (2) is further provided with a gas channel which is communicated with the outside through the evaporator (8), the heat source heat exchanger (5) is further provided with a heat source medium channel which is communicated with the outside, the condenser (7) is further provided with a cooling medium channel which is communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power, so that a double-heat source combined-cycle power device is formed.
2. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (7) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (8) through a booster pump (4), then a steam channel of the evaporator (8) is communicated with the steam turbine (3) through a heat source heat exchanger (5) and a combustion chamber (6), the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (7) through the evaporator (8), an external air channel is communicated with the combustion chamber (6) through a compressor (1), a high-temperature regenerator (9) and the heat source heat exchanger (5), a fuel channel is also communicated with the combustion chamber (6), the combustion chamber (6) is also provided with a gas channel which is communicated with the gas turbine (2), the gas turbine (2) is also provided with a gas channel which is communicated with the outside through the high-temperature regenerator (9) and the evaporator (8), the heat source heat exchanger (5) is also provided with the outside, the condenser (7) is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power, so that a double-heat source combined cycle power device is formed.
3. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (7) is provided with a condensate pipeline which is communicated with the evaporator (8) through a booster pump (4), then a steam channel of the evaporator (8) is communicated with the steam turbine (3) through a heat source heat exchanger (5) and a combustion chamber (6), the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (7) through the evaporator (8), an external air channel is communicated with the combustion chamber (6) through a compressor (1), a high-temperature regenerator (9) and the heat source heat exchanger (5), an external fuel channel is communicated with the combustion chamber (6), the combustion chamber (6) is also provided with a gas channel which is communicated with the gas turbine (2), then the gas channel of the gas turbine (2) is communicated with the gas turbine (2) through the high-temperature regenerator (9), the gas turbine (2) is also provided with a gas channel which is communicated with an external heat source through the evaporator (8), the heat exchanger (5) is also provided with an external heat source, the condenser (7) is also provided with a cooling medium channel which is communicated with the external, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-heat source combined cycle power device.
4. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (7) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (8) through a booster pump (4), then a steam channel of the evaporator (8) is communicated with the steam turbine (3) through a heat source heat exchanger (5) and a combustion chamber (6), the steam turbine (3) is also provided with a low-pressure steam channel, the evaporator (8) is communicated with the condenser (7), an air channel outside is communicated with the combustion chamber (6) through a compressor (1), the heat source heat exchanger (5) and a high-temperature regenerator (9), a fuel channel outside is communicated with the combustion chamber (6), the combustion chamber (6) is also provided with a fuel channel, the gas channel of the gas turbine (2) is communicated with the combustion chamber (2), then the fuel channel of the gas turbine (2) is communicated with the gas channel through the high-temperature regenerator (9), the gas turbine (2) is also provided with the fuel channel through the evaporator (8), the heat source medium channel of the heat exchanger (5) is communicated with an external heat source, the condenser (7) is also provided with a cooling medium channel communicated with the external, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-heat source combined cycle power device.
5. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (7) is provided with a condensate pipeline, a steam channel of the evaporator (8) is communicated with the steam turbine (3) through a heat source heat exchanger (5) and a combustion chamber (6) after the condensate pipeline is communicated with the evaporator (8) through a booster pump (4), the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (7) through the evaporator (8), an air channel outside is communicated with the compressor (1), an air channel of the compressor (1) is communicated with the compressor (1) through a high-temperature regenerator (9), the compressor (1) is also provided with an air channel which is communicated with the combustion chamber (6) through the heat source heat exchanger (5), a fuel channel outside is also communicated with the combustion chamber (6), the combustion chamber (6) is also provided with a gas channel which is communicated with the gas turbine (2), the gas turbine (2) is also provided with a gas channel which is communicated with the outside through the high-temperature regenerator (9) and the evaporator (8), the heat source heat exchanger (5) is also provided with a heat source medium channel which is communicated with the outside, the condenser (7) is also provided with a cooling medium channel which is communicated with the outside, the compressor (2) is connected with the compressor (1) and transmits power to form a double-combined cycle device.
6. The double-heat-source combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a heat source heat exchanger, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (7) is provided with a condensate pipeline which is communicated with the evaporator (8) through a booster pump (4), then a steam channel of the evaporator (8) is communicated with the steam turbine (3) through a heat source heat exchanger (5) and a combustion chamber (6), the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (7) through the evaporator (8), an air channel outside is communicated with the compressor (1), then an air channel of the compressor (1) is communicated with the compressor through a high-temperature regenerator (9), the compressor (1) is also provided with an air channel which is communicated with the combustion chamber (6) through the heat source heat exchanger (5), a fuel channel outside is also communicated with the combustion chamber (6), the combustion chamber (6) is also provided with a gas channel which is communicated with the gas turbine (2) after the combustion chamber is communicated with the gas turbine (2), then the gas channel of the gas turbine (2) is communicated with the compressor through the high-temperature regenerator (9), the gas turbine (2) is also provided with the gas channel which is communicated with the evaporator (8), the heat source heat exchanger (5) is also provided with the heat source medium channel which is communicated with the outside, the heat exchanger (5) is also provided with the condenser (7) is also provided with a cooling medium channel which is communicated with the compressor (2), and the compressor (1) is connected with the power transmission device, and a double-source combined heat source and a power transmission device is formed.
7. The double-heat-source combined cycle power device is characterized in that a heat source medium channel is additionally arranged on an evaporator (8) to be communicated with the outside to form the double-heat-source combined cycle power device in any one of the double-heat-source combined cycle power devices of claims 1 to 6.
8. A double-heat-source combined cycle power device is characterized in that in any one of the double-heat-source combined cycle power devices of claims 1 to 7, a second booster pump and a low-temperature heat regenerator are added, a condenser (7) is communicated with an evaporator (8) through a booster pump (4) and adjusted to be that the condenser (7) is communicated with the low-temperature heat regenerator (11) through a second booster pump (10) and a condensate pipeline is additionally arranged on a steam turbine (3) and communicated with the low-temperature heat regenerator (11), and the low-temperature heat regenerator (11) is further communicated with the evaporator (8) through the booster pump (4) through the condensate pipeline, so that the double-heat-source combined cycle power device is formed.
9. A double-heat-source combined cycle power device is characterized in that in any one of the double-heat-source combined cycle power devices in claims 1-7, an expansion speed increaser (12) is added to replace a steam turbine (3), a diffuser pipe (13) is added to replace a booster pump (4), and the double-heat-source combined cycle power device is formed.
CN202210709053.5A 2021-05-26 2022-05-24 Double-heat-source combined cycle power device Pending CN115405388A (en)

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CN2021106175616 2021-05-26

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