CN115341971A - Dual-fuel gas-steam combined cycle power device - Google Patents
Dual-fuel gas-steam combined cycle power device Download PDFInfo
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- CN115341971A CN115341971A CN202210117730.4A CN202210117730A CN115341971A CN 115341971 A CN115341971 A CN 115341971A CN 202210117730 A CN202210117730 A CN 202210117730A CN 115341971 A CN115341971 A CN 115341971A
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
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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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
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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
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
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- 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
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- 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
- F02C3/14—Gas-turbine plants characterised by the use of combustion products as the working fluid characterised by the arrangement of the combustion chamber in the plant
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- 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
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
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- 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
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/228—Dividing fuel between various burners
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- 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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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a dual-fuel gas-steam combined cycle power device, belonging to the technical field of thermodynamics and thermodynamics. The external part of the gas turbine is provided with a low-grade fuel channel communicated with the combustion chamber, the external part of the gas turbine is provided with a high-grade fuel channel communicated with the heating furnace, the external part of the gas turbine is provided with an air channel communicated with the heating furnace through a heat source heat regenerator, the heating furnace is provided with a gas channel communicated with the external part through the heat source heat regenerator, the external part of the gas channel is provided with an air channel communicated with the combustion chamber through a second compressor and the high-temperature heat regenerator, the combustion chamber is communicated with a gas turbine through the heating furnace, the gas turbine is communicated with the gas turbine through the high-temperature heat regenerator, and the gas channel of the gas turbine is communicated with the external part through the high-temperature heat exchanger; the condenser is communicated with the high-temperature heat exchanger through the booster pump and the evaporator, the compressor is provided with a steam channel which is communicated with the high-temperature heat exchanger, and the high-temperature heat exchanger is respectively communicated with the compressor and the condenser through the steam turbine and the evaporator; the condenser is provided with a cooling medium channel communicated with the outside, the steam turbine is connected with the compressor, and the gas turbine is connected with the second compressor to form the dual-fuel gas-steam combined cycle power device.
Description
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, the conversion of chemical energy of fuel into thermal energy by combustion and the efficient conversion of thermal energy into mechanical energy by a thermal power device are important means for providing human power or electricity.
The fuel has different types and different properties, wherein the temperature of fuel combustion to form fuel gas is closely related to the conversion efficiency; from the temperature of fuel gas formed by combustion, such as adiabatic combustion temperature or constant-pressure combustion temperature, high-grade fuel with high constant-pressure combustion temperature can convert more mechanical energy corresponding to a high-grade heat source; and low-grade fuel with low constant pressure combustion temperature is difficult to form high-temperature combustion products, and the converted mechanical energy is relatively less corresponding to a low-grade heat source.
In a conventional gas-steam power device, the adopted fuels such as gasoline, diesel oil, natural gas and the like are high-quality high-grade fuels; limited by one or more factors such as fuel properties, working principle, working medium, material properties and component manufacturing level, low-grade liquid or gas fuel and high-grade coal are difficult to realize high-level thermal power conversion efficiency in a conventional gas-steam power plant alone.
The invention provides a dual-fuel gas-steam combined cycle power device which reasonably matches and uses low-grade fuel and high-grade fuel, realizes the complementation of advantages and shortages, greatly improves the heat power conversion efficiency of the low-grade fuel, reduces the emission of greenhouse gas and can effectively reduce the fuel cost.
The invention content is as follows:
the invention mainly aims to provide a dual-fuel gas-steam combined cycle power device, and the specific invention contents are explained in different items as follows:
1. the double-fuel 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 combustion chamber, a heating furnace and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with the combustion chamber, the external part is also provided with a high-grade fuel channel communicated with the heating furnace, the external part is also provided with an air channel communicated with the heating furnace through a heat source heat regenerator, the heating furnace is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator, the external part is also provided with an air channel communicated with the combustion chamber through a second compressor, the combustion chamber is also provided with a fuel gas channel communicated with a gas turbine through the heating furnace, and the gas turbine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger; the condenser is provided with a condensate pipeline which is communicated with the 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 provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the steam turbine, and 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, a first path is communicated with the compressor and a second path is communicated with the condenser; the condenser is also provided with a cooling 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 dual-fuel gas-steam combined cycle power device is formed.
2. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the gas turbine is communicated with the external part of the combustion chamber through the heating furnace and the gas channel, and the gas channel is communicated with the external part of the combustion chamber through the high-temperature heat exchanger and the high-temperature heat exchanger; the condenser is provided with a condensate pipeline, a booster pump is communicated with the evaporator, then a steam channel of the evaporator is communicated with the high-temperature heat exchanger, a steam channel of the compressor is communicated with the high-temperature heat exchanger, a steam channel of the high-temperature heat exchanger is communicated with the steam turbine, and 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 a first path is communicated with the compressor and a second path is communicated with the condenser; the condenser is also provided with a cooling 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 dual-fuel gas-steam combined cycle power device is formed.
3. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the heating furnace is also provided with a gas channel which is communicated with a gas turbine through the high-temperature heat regenerator and the heating furnace, and the gas turbine is also communicated with the external part of the heating furnace through the high-temperature heat regenerator and the high-temperature heat exchanger; the condenser is provided with a condensate pipeline which is communicated with the 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 provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the steam turbine, and 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, a first path is communicated with the compressor and a second path is communicated with the condenser; the condenser is also provided with a cooling 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 dual-fuel gas-steam combined cycle power device is formed.
4. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with the combustion chamber, the external part is also provided with a high-grade fuel channel communicated with the heating furnace, the external part is also provided with an air channel communicated with the heating furnace through a heat source heat regenerator, the heating furnace is also provided with a gas channel communicated with the external part through the heat source heat regenerator, the external part is also provided with an air channel communicated with the combustion chamber through a second compressor and a high-temperature heat regenerator, the combustion chamber is also provided with a gas channel communicated with the gas turbine through the heating furnace, then the gas turbine is provided with a gas channel communicated with the combustion chamber through the high-temperature heat regenerator, and the gas turbine is also provided with a gas channel communicated with the external part through the high-temperature heat exchanger; the condenser is provided with a condensate pipeline, a booster pump is communicated with the evaporator, then a steam channel of the evaporator is communicated with the high-temperature heat exchanger, a steam channel of the compressor is communicated with the high-temperature heat exchanger, a steam channel of the high-temperature heat exchanger is communicated with the steam turbine, and 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 a first path is communicated with the compressor and a second path is communicated with the condenser; the condenser is also provided with a cooling 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 dual-fuel gas-steam combined cycle power device is formed.
5. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the gas turbine is communicated with the combustion chamber through the high-temperature heat regenerator, the gas turbine is communicated with the gas turbine through the high-temperature heat regenerator after the combustion chamber is communicated with the combustion turbine through the high-temperature heat regenerator and the heating furnace, and the gas turbine is also communicated with the external part through the high-temperature heat exchanger; the condenser is provided with a condensate pipeline, a booster pump is communicated with the evaporator, then a steam channel of the evaporator is communicated with the high-temperature heat exchanger, a steam channel of the compressor is communicated with the high-temperature heat exchanger, a steam channel of the high-temperature heat exchanger is communicated with the steam turbine, and 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 a first path is communicated with the compressor and a second path is communicated with the condenser; the condenser is also provided with a cooling 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 dual-fuel gas-steam combined cycle power device is formed.
6. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with the combustion chamber, the external part is also provided with a high-grade fuel channel communicated with the heating furnace, the external part is also provided with an air channel communicated with the heating furnace through a heat source heat regenerator, the heating furnace is also provided with a gas channel communicated with the external part through a heat source heat regenerator, the second compressor is also provided with an air channel communicated with the second compressor through a high-temperature heat regenerator after the external part is also provided with the air channel communicated with the second compressor, the second compressor is also provided with an air channel communicated with the combustion chamber, the combustion chamber is also provided with a gas channel communicated with the gas turbine through the heating furnace, and the gas turbine is also provided with a gas channel communicated with the external part through the high-temperature heat regenerator and the high-temperature heat exchanger; the condenser is provided with a condensate pipeline which is communicated with the 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 provided with a steam channel which is communicated with the high-temperature heat exchanger, the high-temperature heat exchanger is also provided with a steam channel which is communicated with the steam turbine, and 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, a first path is communicated with the compressor and a second path is communicated with the condenser; the condenser is also provided with a cooling 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 dual-fuel gas-steam combined cycle power device is formed.
7. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel 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 dual-fuel gas-steam combined cycle power device.
8. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel gas-steam combined cycle power devices in items 1-6, a heat supply device is added, a low-pressure steam channel of a steam turbine is communicated with an evaporator and then divided into two paths, wherein the first path is communicated with a compressor, the second path is communicated with a condenser, the low-pressure steam channel of the steam turbine is communicated with the heat supply device and then divided into two paths, 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 which is communicated with the outside to form the dual-fuel gas-steam combined cycle power device.
9. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel 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 and adjusted to be communicated with the low-pressure steam channel of the steam turbine through the medium-temperature heat regenerator, and therefore the dual-fuel gas-steam combined cycle power device is formed.
10. A dual-fuel gas-steam combined cycle power device is characterized in that a middle-temperature heat regenerator is added in any one of the dual-fuel gas-steam combined cycle power devices in items 1 to 7, a steam channel of an evaporator is communicated with a high-temperature heat exchanger and is adjusted to be communicated with the high-temperature heat exchanger through the middle-temperature heat regenerator, a steam channel of a compressor is communicated with the high-temperature heat exchanger and is adjusted to be communicated with the high-temperature heat exchanger through the middle-temperature heat regenerator, a low-pressure steam channel of a steam turbine is communicated with the evaporator after the steam channel of the steam turbine is communicated with the steam turbine through the middle-temperature heat regenerator, and then the low-pressure steam channel of the steam turbine is communicated with the evaporator to form the dual-fuel gas-steam combined cycle power device.
11. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel gas-steam combined cycle power devices 1-10, a high heat exchanger is adjusted to be communicated with a steam turbine through a steam channel, and the high heat exchanger is adjusted to be communicated with the steam turbine through a combustion chamber through the steam channel, so that the dual-fuel gas-steam combined cycle power device is formed.
12. A dual-fuel 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 dual-fuel gas-steam combined cycle power devices in items 1-11, a condenser is adjusted to be communicated with a condensate pipeline through the booster pump, the condenser is adjusted to be communicated with the low-temperature heat regenerator through the condensate pipeline, a compressor is additionally 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 dual-fuel gas-steam combined cycle power device is formed.
13. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel gas-steam combined cycle power devices 1-11, an expansion speed increaser is added to replace a steam turbine, a dual-energy compressor is added to replace a compressor, a diffuser pipe is added to replace a booster pump, and the dual-fuel gas-steam combined cycle power device is formed.
Description of the drawings:
FIG. 1 is a schematic thermodynamic system diagram of a dual fuel gas-steam combined cycle power plant 1 provided in accordance with the present invention.
FIG. 2 is a schematic thermodynamic system diagram of a dual fuel gas-steam combined cycle power plant of type 2 provided in accordance with the present invention.
FIG. 3 is a schematic thermodynamic system diagram of a dual fuel gas-steam combined cycle power plant of type 3 provided in accordance with the present invention.
FIG. 4 is a diagram of a 4 th principle thermodynamic system of a dual fuel gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 5 is a diagram of a 5 th principle thermodynamic system of a dual fuel gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 6 is a 6 th principal thermodynamic system diagram of a dual fuel gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 7 is a 7 th principle thermodynamic system diagram of a dual fuel gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 8 is a diagram of a 8 th principle thermodynamic system of a dual fuel 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 fuel 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 fuel gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 11 is a diagram of a 11 th principal thermodynamic system of a dual fuel 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 fuel gas-steam combined cycle power plant provided in accordance with the present invention.
FIG. 13 is a 13 th principal thermodynamic system diagram of a dual fuel gas-steam combined cycle power plant provided in accordance with the present invention.
In the figure, 1-a steam turbine, 2-a compressor, 3-a booster pump, 4-a condenser, 5-an evaporator (a waste heat boiler), 6-a high-temperature heat exchanger, 7-a second compressor, 8-a gas turbine, 9-a combustion chamber, 10-a heating furnace, 11-a heat source regenerator, 12-a high-temperature regenerator, 13-a heat supply, 14-an intermediate-temperature regenerator, 15-a second booster pump, 16-a low-temperature regenerator, 17-an expansion speed increaser, 18-a dual-energy compressor and 19-a diffuser pipe.
With respect to the expansion speed increaser, the combustion chamber, the heating furnace, the heat source regenerator, the low-grade fuel and the high-grade fuel, the following brief description is given here:
(1) In order to reveal the differences in the operational sequences between the steam turbine 1 and the expansion gear 17, the following explanations are provided:
(1) in fig. 1, the steam flows through the steam turbine 1 to achieve thermal work, the steam at the outlet of the steam turbine 1 has very low pressure and small flow rate (corresponding to small kinetic energy), and the mechanical energy required by the booster pump 3 can be provided by the steam turbine 1 through mechanical transmission or from the outside.
(2) In contrast, in fig. 13, the steam at the outlet of the expansion speed increaser 17 also has a very low pressure, but the flow rate is relatively large (a part of the pressure drop is converted into the kinetic energy of the low-pressure steam) so as to meet the requirements of the speed reduction and pressure increase of the diffuser pipe 19 and the partial pressure increase (speed reduction) of the dual-energy compressor 18.
(3) The process of the steam flowing through the steam turbine 1 to realize the thermal variable work in fig. 1 adopts the decompression work, and the process of the steam flowing through the expansion speed increaser 17 to realize the thermal variable work in fig. 13 adopts the decompression work and the speed increase.
(2) Combustion chamber 9, heating furnace 10, and heat source regenerator 11:
(1) the combustion chamber 9 is mainly used for generating gas working medium, and a heat exchange tube bundle can be arranged inside the combustion chamber to heat other medium when necessary.
(2) The heat source regenerator 11 relates to the temperature grade of the fuel gas (i.e., the high temperature section of the heat source) in the heating furnace 10, which is listed separately.
(3) According to the requirement, a heat exchange tube bundle is arranged in the heating furnace 10 to heat the medium flowing through the heating furnace, including a heat exchanger for raising the temperature of the medium, and an evaporator for heating and vaporizing, a reheater for reheating steam and the like can be arranged.
(4) The particular heat exchanger bundle involved in heating the circulating medium flowing through the combustion chamber or furnace is not specifically indicated, but is generally expressed in terms of the combustion chamber or furnace.
(3) Low-grade and high-grade fuels:
(1) low-grade fuel: refers to a fuel in which the highest temperature at which combustion products can form (such as adiabatic combustion temperature or fixed pressure combustion temperature) is relatively low; compared with gasoline and diesel oil, the raw gas is a low-grade fuel. From the concept of heat source, low grade fuel refers to fuel whose combustion products are difficult to form a high temperature heat source of higher temperature.
(2) High-grade fuel: refers to a fuel in which the highest temperature at which combustion products can form (such as adiabatic combustion temperature or fixed pressure combustion temperature) is relatively high; for example, high-quality coal, natural gas, methane, hydrogen and the like are high-grade fuels relative to coal gangue, coal slime and other fuels. From the concept of heat source, a low grade fuel refers to a fuel whose combustion products can form a high temperature heat source of higher temperature.
(3) For solid fuels, the gaseous substances of the combustion products are the core of the heat source and are important components of the thermodynamic system; the solid substances in the combustion products, such as waste slag, are discharged after the heat energy contained in the combustion products is utilized (the utilization process and equipment are included in the heating furnace or air is preheated outside the heating furnace body), are not separately listed, and the functions of the solid substances are not separately expressed.
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 fuel gas-steam combined cycle power plant shown in fig. 1 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 combustion chamber, a heating furnace and a heat source regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber 9, the external part is also provided with a high-grade fuel channel communicated with a heating furnace 10, the external part is also provided with an air channel communicated with the heating furnace 10 through a heat source heat regenerator 11, the heating furnace 10 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 11, the external part is also provided with an air channel communicated with the combustion chamber 9 through a second compressor 7, the combustion chamber 9 is also provided with a fuel gas channel communicated with a gas turbine 8 through the heating furnace 10, and the gas turbine 8 is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger 6; the condenser 4 is provided with a condensate pipeline, the evaporator 5 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6 after the condensate pipeline is communicated with the evaporator 5 through the booster pump 3, the compressor 2 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is also provided with a steam channel to be communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel to be 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 communicated with the outside through a cooling medium channel, 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 process, external first path air flows through a heat source heat regenerator 11 to absorb heat and raise the temperature, then enters a heating furnace 10 to participate in combustion, external high-grade fuel enters the heating furnace 10 to be mixed with the air from the heat source heat regenerator 11 and combusted into high-temperature fuel gas, the fuel gas generated by the heating furnace 10 releases heat to the fuel gas which is generated from a combustion chamber 9 and flows through the heating furnace 10 and is cooled, then flows through the heat source heat regenerator 11 to release heat and lower the temperature, and then is discharged to the outside; the external second path of air flows through the second compressor 7, is subjected to pressure rise and temperature rise and then enters the combustion chamber 9 to participate in combustion, the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed in the combustion chamber 9 and are combusted into fuel gas with higher temperature; the gas produced by the combustion chamber 9 absorbs heat and heats through the heating furnace 10, reduces pressure and works through the gas turbine 8, releases heat and cools through the high-temperature heat exchanger 6, and then 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; the low-grade fuel and the high-grade fuel jointly provide driving heat load through the combustion chamber 9 and the heating furnace 10, the cooling medium takes away the low-temperature heat load through the condenser 4, and air and fuel gas take away the low-temperature heat load through the 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 a dual-fuel gas-steam combined cycle power device is formed.
The dual fuel gas-steam combined cycle power plant shown in fig. 2 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber 9, the external part is also provided with a high-grade fuel channel communicated with a heating furnace 10, the external part is also provided with an air channel communicated with the heating furnace 10 through a heat source heat regenerator 11, the heating furnace 10 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 11, the external part is also provided with an air channel communicated with the combustion chamber 9 through a second compressor 7 and a high-temperature heat regenerator 12, the combustion chamber 9 is also provided with a fuel gas channel communicated with a gas turbine 8 through the heating furnace 10, and the gas turbine 8 is also provided with a fuel gas channel communicated with the external part through the high-temperature heat regenerator 12 and a high-temperature heat exchanger 6; the condenser 4 is provided with a condensate pipeline, the evaporator 5 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6 after the condensate pipeline is communicated with the evaporator 5 through the booster pump 3, the compressor 2 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is also provided with a steam channel to be communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel to be 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 communicated with the outside through a cooling medium channel, 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 dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the external second path of air flows through the second compressor 7 to be boosted and heated and flows through the high-temperature heat regenerator 12 to absorb heat and be heated, then enters the combustion chamber 9 to participate in combustion, the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed and combusted in the combustion chamber 9 to form fuel gas with higher temperature; the gas produced by the combustion chamber 9 passes through the heating furnace 10 to absorb heat and raise temperature, passes through the gas turbine 8 to reduce pressure and do work, passes through the high-temperature heat regenerator 12 and the high-temperature heat exchanger 6 to gradually release heat and lower temperature, and then is discharged outwards to form the dual-fuel gas-steam combined cycle power device.
The dual fuel gas-steam combined cycle power plant shown in fig. 3 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel which is communicated with a combustion chamber 9, the external part is also provided with a high-grade fuel channel which is communicated with a heating furnace 10, the external part is also provided with an air channel which is communicated with the heating furnace 10 through a heat source heat regenerator 11, the heating furnace 10 is also provided with a fuel gas channel which is communicated with the external part through the heat source heat regenerator 11, the external part is also provided with an air channel which is communicated with the combustion chamber 9 through a second compressor 7, the combustion chamber 9 is also provided with a fuel gas channel which is communicated with a gas turbine 8 through a high-temperature heat regenerator 12 and the heating furnace 10, and the gas turbine 8 is also provided with a fuel gas channel which is communicated with the external part through a high-temperature heat regenerator 12 and a high-temperature heat exchanger 6; the condenser 4 is provided with a condensate pipeline, the evaporator 5 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6 after the condensate pipeline is communicated with the evaporator 5 through the booster pump 3, the compressor 2 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is also provided with a steam channel to be communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel to be 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 communicated with the outside through a cooling medium channel, 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 dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the external second path of air flows through the second compressor 7, is subjected to pressure rise and temperature rise and then enters the combustion chamber 9 to participate in combustion, the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed in the combustion chamber 9 and are combusted into fuel gas with higher temperature; the gas generated by the combustion chamber 9 passes through the high-temperature heat regenerator 12 and the heating furnace 10 to gradually absorb heat and raise temperature, passes through the gas turbine 8 to reduce pressure and work, passes through the high-temperature heat regenerator 12 and the high-temperature heat exchanger 6 to gradually release heat and lower temperature, and is then discharged outwards to form the dual-fuel gas-steam combined cycle power device.
The dual fuel gas-steam combined cycle power plant shown in fig. 4 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber 9, the external part is also provided with a high-grade fuel channel communicated with a heating furnace 10, the external part is also provided with an air channel communicated with the heating furnace 10 through a heat source heat regenerator 11, the heating furnace 10 is also provided with a gas channel communicated with the external part through the heat source heat regenerator 11, the external part is also provided with an air channel communicated with the combustion chamber 9 through a second compressor 7 and a high-temperature heat regenerator 12, the combustion chamber 9 is also provided with a gas channel communicated with a gas turbine 8 through the heating furnace 10, then the gas turbine 8 is provided with a gas channel communicated with the gas turbine 8 through the high-temperature heat regenerator 12, and the gas turbine 8 is also provided with a gas channel communicated with the external part through a high-temperature heat exchanger 6; the condenser 4 has a condensate pipeline which is communicated with the evaporator 5 through the 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 communicated with the steam turbine 1, and the steam turbine 1 is divided into two paths after a low-pressure steam channel is communicated with the evaporator 5, wherein the first path is communicated with the compressor 2 and the second path is communicated with the condenser 4; the condenser 4 is also communicated with the outside through a cooling medium channel, 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 dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the external second path of air enters the combustion chamber 9 for combustion after flowing through the second compressor 7 for pressure rise and temperature rise and flowing through the high-temperature heat regenerator 12 for heat absorption and temperature rise, the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed and combusted in the combustion chamber 9 to form fuel gas with higher temperature; the gas produced by the combustion chamber 9 flows through the heating furnace 10 to absorb heat and raise temperature, enters the gas turbine 8 to reduce pressure and do work to a certain degree, then flows through the high-temperature heat regenerator 12 to release heat and lower temperature, and then enters the gas turbine 8 to continue reducing pressure and doing work; the gas discharged by the gas turbine 8 passes through the high-temperature heat exchanger 6 to release heat and reduce temperature, and then is discharged outwards, so that a dual-fuel gas-steam combined cycle power device is formed.
The dual fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel which is communicated with a combustion chamber 9, the external part is also provided with a high-grade fuel channel which is communicated with a heating furnace 10, the external part is also provided with an air channel which is communicated with the heating furnace 10 through a heat source heat regenerator 11, the heating furnace 10 is also provided with a gas channel which is communicated with the external part through the heat source heat regenerator 11, the external part is also provided with an air channel which is communicated with the combustion chamber 9 through a second compressor 7, the combustion chamber 9 is also provided with a gas channel which is communicated with a gas turbine 8 through a high-temperature heat regenerator 12 and the heating furnace 10, then the gas turbine 8 is also provided with a gas channel which is communicated with the gas turbine 8 through the high-temperature heat regenerator 12, and the gas turbine 8 is also provided with a gas channel which is communicated with the external part through a high-temperature heat exchanger 6; the condenser 4 is provided with a condensate pipeline, the evaporator 5 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6 after the condensate pipeline is communicated with the evaporator 5 through the booster pump 3, the compressor 2 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is also provided with a steam channel to be communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel to be 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 communicated with the outside through a cooling medium channel, 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 dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the external second path of air flows through the second compressor 7, is subjected to pressure rise and temperature rise and then enters the combustion chamber 9 to participate in combustion, the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed in the combustion chamber 9 and are combusted into fuel gas with higher temperature; the gas produced by the combustion chamber 9 flows through the high-temperature heat regenerator 12 and the heating furnace 10 to absorb heat and raise temperature gradually, enters the gas turbine 8 to reduce pressure and do work to a certain degree, then flows through the high-temperature heat regenerator 12 to release heat and lower temperature, and then enters the gas turbine 8 to continue reducing pressure and do work; the gas discharged by the gas turbine 8 passes through the high-temperature heat exchanger 6 to release heat and reduce temperature, and then is discharged outwards, so that a dual-fuel gas-steam combined cycle power device is formed.
The dual fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel which is communicated with a combustion chamber 9, the external part is also provided with a high-grade fuel channel which is communicated with a heating furnace 10, the external part is also provided with an air channel which is communicated with the heating furnace 10 through a heat source heat regenerator 11, the heating furnace 10 is also provided with a fuel gas channel which is communicated with the external part through the heat source heat regenerator 11, the external part is also provided with an air channel which is communicated with a second compressor 7, then the second compressor 7 is also provided with an air channel which is communicated with the second compressor through a high-temperature heat regenerator 12, the second compressor 7 is also provided with an air channel which is communicated with the combustion chamber 9, the combustion chamber 9 is also provided with a fuel gas channel which is communicated with a gas turbine 8 through the heating furnace 10, and the gas turbine 8 is also provided with a fuel gas channel which is communicated with the external part through the high-temperature heat regenerator 12 and a high-temperature heat exchanger 6; the condenser 4 is provided with a condensate pipeline, the evaporator 5 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6 after the condensate pipeline is communicated with the evaporator 5 through the booster pump 3, the compressor 2 is provided with a steam channel to be communicated with the high-temperature heat exchanger 6, the high-temperature heat exchanger 6 is also provided with a steam channel to be communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel to be 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 communicated with the outside through a cooling medium channel, 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 dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the external second path of air enters the second compressor 7, is subjected to pressure boosting and temperature rising to a certain degree, then flows through the high-temperature heat regenerator 12 to absorb heat and rise temperature, and then enters the second compressor 7 to continue the pressure boosting and temperature rising; air discharged by the second compressor 7 enters the combustion chamber 9 to participate in combustion, external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed in the combustion chamber 9 and are combusted into fuel gas with higher temperature; the gas produced by the combustion chamber 9 passes through the heating furnace 10 to absorb heat and raise temperature, passes through the gas turbine 8 to reduce pressure and do work, passes through the high-temperature heat regenerator 12 and the high-temperature heat exchanger 6 to gradually release heat and lower temperature, and then is discharged outwards to form the dual-fuel gas-steam combined cycle power device.
The dual fuel gas-steam combined cycle power plant shown in fig. 7 is implemented as follows:
in the dual-fuel gas-steam combined cycle power plant shown in fig. 1, the evaporator 5 is additionally provided with a gas passage to communicate 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 dual-fuel gas-steam combined cycle power device is formed.
The dual fuel gas-steam combined cycle power plant shown in fig. 8 is implemented as follows:
(1) Structurally, in the dual-fuel 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, a first path is communicated with a compressor 2, a second path is communicated with a condenser 4, the adjustment is carried out, the low-pressure steam channel of the steam turbine 1 is communicated with a heat supply device 13 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 13 is also communicated with the outside through a heated medium channel, and the evaporator 5 is additionally provided with a gas channel which is communicated with the outside.
(2) Compared with the dual-fuel gas-steam combined cycle power plant shown in fig. 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 supplier 13 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-grade fuel and the high-grade fuel jointly provide driving heat load through the primary heating furnace 9 and the secondary heating furnace 10, the cooling medium takes away the low-temperature heat load through the condenser 4, the air and the fuel gas take away the low-temperature heat load through the inlet and outlet flow, and the heated medium takes away the medium-temperature heat load through the heat supply device 13; 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 dual-fuel gas-steam combined cycle power device is formed.
The dual fuel gas-steam combined cycle power plant shown in fig. 9 is implemented as follows:
(1) Structurally, in the dual-fuel 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 that the evaporator 5 has the steam channel communicated with the high temperature heat exchanger 6 through a medium temperature heat regenerator 14, a steam channel of a compressor 2 is communicated with the high temperature heat exchanger 6 and adjusted to be that the compressor 2 has the steam channel communicated with the high temperature heat exchanger 6 through the medium temperature heat regenerator 14, and a low pressure steam channel of a steam turbine 1 is communicated with the evaporator 5 and adjusted to be that the steam turbine 1 has the low pressure steam channel communicated with the evaporator 5 through the medium temperature heat regenerator 14.
(2) Compared with the dual-fuel gas-steam combined cycle power plant shown in fig. 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 14 to continuously absorb heat, and then enters the high-temperature heat exchanger 6 to absorb heat and be heated; steam discharged by the compressor 2 flows through the medium-temperature heat regenerator 14 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 14 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 dual-fuel gas-steam combined cycle power device is formed.
The dual fuel gas-steam combined cycle power plant shown in fig. 10 is implemented as follows:
(1) Structurally, in the dual-fuel 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 that the steam channel of the evaporator 5 is communicated with the high temperature heat exchanger 6 through a middle temperature heat regenerator 14, a steam channel of a compressor 2 is communicated with the high temperature heat exchanger 6 and adjusted to be that the steam channel of the compressor 2 is communicated with the high temperature heat exchanger 6 through the middle temperature heat regenerator 14, a low pressure steam channel of a steam turbine 1 is communicated with the evaporator 5 and adjusted to be that the steam channel of the steam turbine 1 is communicated with the steam turbine 1 through the middle temperature heat regenerator 14, and then the low pressure steam channel of the steam turbine 1 is communicated with the evaporator 5.
(2) Compared with the dual-fuel gas-steam combined cycle power plant shown in fig. 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 14 to continuously absorb heat, and then enters the high-temperature heat exchanger 6 to absorb heat and be heated; steam discharged by the compressor 2 flows through the medium-temperature heat regenerator 14 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 14 to release heat and reduce temperature, and then enters the steam turbine 1 to continue reducing pressure and doing work; the low-pressure steam discharged by the steam turbine 1 passes through the evaporator 5 to release heat and cool, 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 dual-fuel gas-steam combined cycle power device is formed.
The dual fuel gas-steam combined cycle power plant shown in fig. 11 is implemented as follows:
(1) Structurally, in the dual fuel gas-steam combined cycle power plant shown in fig. 1, the high heat exchanger 6 having the steam passage communicating with the steam turbine 1 is adjusted such that the high heat exchanger 6 having the steam passage communicating with the steam turbine 1 via the combustion chamber 9.
(2) In the process, external first path air flows through a heat source heat regenerator 11 to absorb heat and raise the temperature, then enters a heating furnace 10 to participate in combustion, external high-grade fuel enters the heating furnace 10 to be mixed with the air from the heat source heat regenerator 11 and combusted into high-temperature fuel gas, the fuel gas generated by the heating furnace 10 releases heat to the fuel gas which is generated from a combustion chamber 9 and flows through the heating furnace 10 and is cooled, then flows through the heat source heat regenerator 11 to release heat and lower the temperature, and then is discharged to the outside; the external second path of air flows through the second compressor 7, is subjected to pressure rise and temperature rise and then enters the combustion chamber 9 to participate in combustion, the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and the air are mixed in the combustion chamber 9 and are combusted into fuel gas with higher temperature; the gas produced by the combustion chamber 9 releases heat and flows through the circulating working medium in the combustion chamber, then flows through the heating furnace 10 to absorb heat and raise temperature, flows through the gas turbine 8 to reduce pressure and do work, flows through the high-temperature heat exchanger 6 to release heat and lower temperature, and then 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 absorbs heat and heats through the combustion chamber 9, and reduces the pressure and does work through the steam turbine 1, the low-pressure steam discharged by the steam turbine 1 releases heat and cools through the evaporator 5, and then is divided into two paths, wherein the first path enters the compressor 2 to increase the pressure and heat, and the second path enters the condenser 4 to release heat and condense; the low-grade fuel and the high-grade fuel jointly provide driving heat load through the combustion chamber 9 and the heating furnace 10, the cooling medium takes away the low-temperature heat load through the condenser 4, and air and fuel gas take away the low-temperature heat load through the 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 a dual-fuel gas-steam combined cycle power device is formed.
The dual fuel gas-steam combined cycle power plant shown in fig. 12 is implemented as follows:
(1) Structurally, in the dual-fuel gas-steam combined cycle power plant shown in fig. 1, a second booster pump and a low-temperature heat regenerator are added, a condensate pipeline of the condenser 4 is communicated with the booster pump 3, the condensate pipeline of the condenser 4 is communicated with the low-temperature heat regenerator 16 through a second booster pump 15, a steam extraction channel is additionally arranged on the compressor 2 and is communicated with the low-temperature heat regenerator 16, and the low-temperature heat regenerator 16 is communicated with the booster pump 3 through the condensate pipeline.
(2) Compared with the dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the condensate discharged by the condenser 4 flows through the second booster pump 15 to be boosted and then enters the low-temperature heat regenerator 16 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 16 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 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 16, 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 dual-fuel gas-steam combined cycle power device.
The dual fuel gas-steam combined cycle power plant shown in fig. 13 is implemented as follows:
(1) Structurally, in the dual fuel gas-steam combined cycle power plant shown in fig. 1, an expansion speed increaser 17 is added to replace the steam turbine 1, a dual energy compressor 18 is added to replace the compressor 2, and a diffuser pipe 19 is added to replace the booster pump 3.
(2) Compared with the dual-fuel gas-steam combined cycle power plant shown in fig. 1, the difference in the flow is that: the condensate of the condenser 4 flows through the diffuser pipe 19 to reduce the speed and increase the pressure, flows through the evaporator 5 to absorb heat, raise the temperature, vaporize and overheat, then enters the high-temperature heat exchanger 6 to absorb heat and raise the temperature, and the steam discharged by the dual-energy compressor 18 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 expansion speed increaser 17 to reduce the pressure, do work and increase the speed, the low-pressure steam discharged by the expansion speed increaser 17 flows through the evaporator 5 to release heat and reduce the temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the dual-energy compressor 18 to increase the pressure, increase the temperature and reduce the speed, and the second path enters the condenser 4 to release heat and condense; the work output by the gas turbine 8 and the expansion speed increaser 17 is provided to the second compressor 7, the dual-energy compressor 18 and the external power to form a dual-fuel gas-steam combined cycle power plant.
The effect that the technology of the invention can realize-the dual-fuel gas-steam combined cycle power device provided by the invention has the following effects and advantages:
(1) The low-grade fuel and the high-grade fuel are reasonably matched to provide high-temperature heat load together, so that the fuel cost is effectively reduced.
(2) The high-temperature thermal load is utilized in a grading manner, the irreversible loss caused by temperature difference is obviously reduced, and the thermal power change efficiency of the device is effectively improved.
(3) The low-grade fuel effectively replaces the high-grade fuel, and the utilization value of converting the low-grade fuel into mechanical energy is greatly improved.
(4) The low-grade fuel can be used for or is beneficial to reducing the compression ratio of a top gas turbine circulating system, improving the flow of working medium and being beneficial to constructing a large-load power device.
(5) The investment of high-grade fuel is directly reduced, and the effect is equal to the improvement of the utilization rate of converting the high-grade fuel into mechanical energy.
(6) The fuel using range of the gas-steam combined cycle power device is greatly expanded, and the energy consumption cost of the power device is reduced.
(7) 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.
(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 (13)
1. The double-fuel 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 combustion chamber, a heating furnace and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber (9), the external part is also provided with a high-grade fuel channel communicated with a heating furnace (10), the external part is also provided with an air channel communicated with the heating furnace (10) through a heat source heat regenerator (11), the heating furnace (10) is also provided with a gas channel communicated with the external part through the heat source heat regenerator (11), the external part is also provided with an air channel communicated with the combustion chamber (9) through a second compressor (7), the combustion chamber (9) is also provided with a gas channel communicated with a gas turbine (8) through the heating furnace (10), and the gas turbine (8) is also provided with a gas channel communicated with the external part through a high-temperature heat exchanger (6); the condenser (4) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (5) through the booster pump (3), then the evaporator (5) is further provided with a steam channel to be communicated with the high-temperature heat exchanger (6), the compressor (2) is provided with a steam channel to be communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is further provided with a steam channel to be communicated with the steam turbine (1), the steam turbine (1) is further provided with a low-pressure steam channel to be 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 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, so that the dual-fuel gas-steam combined cycle power device is formed.
2. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber (9), the external part is also provided with a high-grade fuel channel communicated with a heating furnace (10), the external part is also provided with an air channel communicated with the heating furnace (10) through a heat source heat regenerator (11), the heating furnace (10) is also provided with a gas channel communicated with the external part through the heat source heat regenerator (11), the external part is also provided with an air channel communicated with the combustion chamber (9) through a second compressor (7) and a high-temperature heat regenerator (12), the combustion chamber (9) is also provided with a gas channel communicated with a gas turbine (8) through the heating furnace (10), and the gas turbine (8) is also provided with a gas channel communicated with the external part through the high-temperature heat regenerator (12) and a high-temperature heat exchanger (6); the condenser (4) is provided with a condensate pipeline, a booster pump (3) is communicated with the evaporator (5), 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 high-temperature heat exchanger (6) is also communicated with the steam turbine (1), the steam turbine (1) is also divided into two paths after being communicated with the evaporator (5), wherein 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 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, so that a dual-fuel gas-steam combined cycle power device is formed.
3. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber (9), the external part is also provided with a high-grade fuel channel communicated with a heating furnace (10), the external part is also provided with an air channel communicated with the heating furnace (10) through a heat source heat regenerator (11), the heating furnace (10) is also provided with a gas channel communicated with the external part through the heat source heat regenerator (11), the external part is also provided with an air channel communicated with the combustion chamber (9) through a second compressor (7), the combustion chamber (9) is also provided with a gas channel communicated with a gas turbine (8) through a high-temperature heat regenerator (12) and the heating furnace (10), and the gas turbine (8) is also provided with a gas channel communicated with the external part through the high-temperature heat regenerator (12) and a high-temperature heat exchanger (6); the condenser (4) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (5) through the booster pump (3), then the evaporator (5) is further provided with a steam channel to be communicated with the high-temperature heat exchanger (6), the compressor (2) is provided with a steam channel to be communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is further provided with a steam channel to be communicated with the steam turbine (1), the steam turbine (1) is further provided with a low-pressure steam channel to be 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 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, so that a dual-fuel gas-steam combined cycle power device is formed.
4. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber (9), the external part is also provided with a high-grade fuel channel communicated with a heating furnace (10), the external part is also provided with an air channel communicated with the heating furnace (10) through a heat source heat regenerator (11), the heating furnace (10) is also provided with a gas channel communicated with the external part through the heat source heat regenerator (11), the external part is also provided with an air channel communicated with the combustion chamber (9) through a second compressor (7) and a high-temperature heat regenerator (12), the combustion chamber (9) is also provided with a gas channel communicated with a gas turbine (8) through the heating furnace (10), then the gas turbine (8) is provided with a gas channel communicated with the combustion chamber through the high-temperature heat regenerator (12), and the gas turbine (8) is also provided with a gas channel communicated with the external part through a high-temperature heat exchanger (6); the condenser (4) is provided with a condensate pipeline, a booster pump (3) is communicated with the evaporator (5), 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 high-temperature heat exchanger (6) is also communicated with the steam turbine (1), the steam turbine (1) is also divided into two paths after being communicated with the evaporator (5), wherein 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 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, so that the dual-fuel gas-steam combined cycle power device is formed.
5. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber (9), the external part is also provided with a high-grade fuel channel communicated with a heating furnace (10), the external part is also provided with an air channel communicated with the heating furnace (10) through a heat source heat regenerator (11), the heating furnace (10) is also provided with a gas channel communicated with the external part through the heat source heat regenerator (11), the external part is also provided with an air channel communicated with the combustion chamber (9) through a second compressor (7), the combustion chamber (9) is also provided with a gas channel communicated with a gas turbine (8) through a high-temperature heat regenerator (12), the gas turbine (8) is also provided with a gas channel communicated with the external part through the high-temperature heat exchanger (6); the condenser (4) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (5) through the booster pump (3), then the evaporator (5) is further provided with a steam channel to be communicated with the high-temperature heat exchanger (6), the compressor (2) is provided with a steam channel to be communicated with the high-temperature heat exchanger (6), the high-temperature heat exchanger (6) is further provided with a steam channel to be communicated with the steam turbine (1), the steam turbine (1) is further provided with a low-pressure steam channel to be 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 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, so that the dual-fuel gas-steam combined cycle power device is formed.
6. The double-fuel 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 combustion chamber, a heating furnace, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a combustion chamber (9), the external part is also provided with a high-grade fuel channel communicated with a heating furnace (10), the external part is also provided with an air channel communicated with the heating furnace (10) through a heat source heat regenerator (11), the heating furnace (10) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (11), after the external part is also provided with the air channel communicated with a second compressor (7), the second compressor (7) is also provided with the air channel communicated with the second compressor through a high-temperature heat regenerator (12), the second compressor (7) is also provided with the air channel communicated with the combustion chamber (9), the combustion chamber (9) is also provided with the fuel gas channel communicated with a gas turbine (8) through the heating furnace (10), and the gas turbine (8) is also provided with the fuel gas channel communicated with the external part through the high-temperature heat regenerator (12) and the high-temperature heat exchanger (6); the condenser (4) is provided with a condensate pipeline, a booster pump (3) is communicated with the evaporator (5), 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 high-temperature heat exchanger (6) is also communicated with the steam turbine (1), the steam turbine (1) is also divided into two paths after being communicated with the evaporator (5), wherein 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 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, so that the dual-fuel gas-steam combined cycle power device is formed.
7. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel 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 dual-fuel gas-steam combined cycle power device.
8. A dual-fuel gas-steam combined cycle power device is characterized in that a heat supplier is added in any one dual-fuel gas-steam combined cycle power device of claims 1 to 6, a low-pressure steam channel of a steam turbine (1) is communicated with an evaporator (5) and then divided into two paths, namely, a first path is communicated with a compressor (2) and a second path is communicated with a condenser (4), the steam turbine (1) is adjusted to be provided with a low-pressure steam channel to be communicated with a heat supplier (13) 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 heat supplier (13) is also provided with a heated medium channel to be communicated with the outside, and the fuel gas channel of the evaporator (5) is communicated with the outside to form the additional dual-fuel gas-steam combined cycle power device.
9. A dual-fuel gas-steam combined cycle power device is characterized in that a middle-temperature regenerator is added in any one of the dual-fuel 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 regenerator (14), 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 regenerator (14), a steam channel of a steam turbine (1) is communicated with the evaporator (5) and adjusted to be communicated with a low-pressure steam channel of the steam turbine (1) and communicated with the evaporator (5) through the middle-temperature regenerator (14), and the dual-fuel gas-steam combined cycle power device is formed.
10. A dual-fuel gas-steam combined cycle power device is characterized in that a middle-temperature regenerator is added in any one of the dual-fuel 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 regenerator (14), 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 regenerator (14), 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) is adjusted to be communicated with the evaporator (5) through the middle-temperature regenerator (14), and then the steam channel of the steam turbine (1) is communicated with the evaporator (5) through the low-pressure steam channel to form the dual-fuel gas-steam combined cycle power device.
11. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel gas-steam combined cycle power devices of claims 1 to 10, a high heat exchanger (6) is provided with a steam channel to be communicated with a steam turbine (1) and is adjusted to be that the high heat exchanger (6) is provided with a steam channel to be communicated with the steam turbine (1) through a combustion chamber (9), so that the dual-fuel gas-steam combined cycle power device is formed.
12. A dual-fuel 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 dual-fuel gas-steam combined cycle power devices of claims 1 to 11, a condenser (4) is communicated with a booster pump (3) through a condensate pipeline, the condenser (4) is adjusted to be communicated with a low-temperature heat regenerator (16) through a second booster pump (15) through the condensate pipeline, a steam extraction channel is additionally arranged on a compressor (2) and is communicated with the low-temperature heat regenerator (16), and the low-temperature heat regenerator (16) is communicated with the booster pump (3) through the condensate pipeline, so that the dual-fuel gas-steam combined cycle power device is formed.
13. A dual-fuel gas-steam combined cycle power device is characterized in that in any one of the dual-fuel gas-steam combined cycle power devices disclosed in claims 1-11, an expansion speed increaser (17) is added to replace a steam turbine (1), a dual-energy compressor (18) is added to replace a compressor (2), a diffuser pipe (19) is added to replace a booster pump (3), and the dual-fuel gas-steam combined cycle power device is formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110157332 | 2021-01-25 | ||
| CN2021101573320 | 2021-01-25 |
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| CN115341971A true CN115341971A (en) | 2022-11-15 |
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|---|---|---|---|
| CN202210117730.4A Pending CN115341971A (en) | 2021-01-25 | 2022-01-24 | Dual-fuel gas-steam combined cycle power device |
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| Country | Link |
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| CN (1) | CN115341971A (en) |
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