CN117927367A - Photo-thermal combined cycle power device with same fuel - Google Patents

Abstract

The invention provides a photo-thermal co-fuel combined cycle power device, and belongs to the technical field of thermodynamics and thermokinetic. The outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through evaporator, the compressor has second air passage to communicate with combustion chamber, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has fuel gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has fuel gas passage to communicate with outside through regenerator and evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

Description

Photo-thermal combined cycle power device with same fuel

Technical field:

The invention belongs to the technical field of thermodynamics and thermal dynamics.

The background technology is as follows:

Photo-thermal and conventional fuels can realize thermal work; different system devices are constructed by adopting the same or different thermal power principles, and corresponding construction cost is paid, so that the conversion of photo-thermal or conventional fuel into mechanical energy is realized; therefore, it is of positive significance to try to reduce the number of thermal power devices.

The method is limited by factors such as working principle, working medium property, material property and safety, and the irreversible temperature difference loss exists in the photo-thermal power application process, and the larger the irreversible temperature difference loss is along with the rise of the photo-thermal temperature; for conventional fuels, especially low grade fuels, the power application value is to be further improved.

In order to increase the thermal efficiency, it is necessary to bring the circulating medium to as high a temperature as possible after the high-temperature load is obtained; however, at this time, the temperature of the circulating working medium discharged by the high-temperature expander is increased, the heat discharge is increased, and the heat transfer temperature difference loss in the thermodynamic system is increased, which has an adverse effect on the improvement of the heat-variable work efficiency.

The invention provides a photo-thermal integrated fuel combined cycle power device which has the advantages of light-thermal integrated fuel driving heat load, reasonable flow, simple structure, small irreversible loss of systematic temperature difference of a thermal power device, reasonable thermodynamic perfection and high cost performance based on the principle of simply, actively, safely and efficiently utilizing energy to obtain power.

The invention comprises the following steps:

The invention mainly aims to provide a photo-thermal integrated fuel combined cycle power plant, and the specific invention is described in the following items:

1. The combined cycle power device with the photo-thermal and the fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through evaporator, the compressor has second air passage to communicate with combustion chamber, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has fuel gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has fuel gas passage to communicate with outside through regenerator and evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

2. The combined cycle power device with the photo-thermal and the fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through the evaporator, the compressor has second air passage to communicate with combustion chamber, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has fuel gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has fuel gas passage to communicate with oneself through the regenerator, the gas turbine has fuel gas passage to communicate with outside through the evaporator again after the gas passage is communicated with oneself through the regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

3. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through the evaporator, the compressor has second air passage to communicate with combustion chamber through the second regenerator, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has fuel gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has fuel gas passage to communicate with outside through the second regenerator, regenerator and evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

4. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through the evaporator, the compressor has second air passage to communicate with combustion chamber through the second regenerator, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has fuel gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has fuel gas passage to communicate with oneself through the second regenerator and regenerator, the gas turbine has fuel gas passage to communicate with outside through the evaporator again after the gas turbine has fuel gas passage to communicate with oneself through the second regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

5. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through the evaporator, the compressor has second air passage to communicate with oneself through the second regenerator, the compressor has air passage to communicate with combustion chamber again, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has gas passage to communicate with outside through the second regenerator, regenerator and evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

6. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor to communicate, the compressor has first air passage to communicate with expander through the regenerator, the expander has air passage to communicate with outside through the evaporator, the compressor has air passage to communicate with combustion chamber after the second air passage communicates with oneself through the second regenerator, the outside has fuel passage to communicate with combustion chamber, the combustion chamber has gas passage to communicate with gas turbine through the solar energy heat collecting system, the gas turbine has gas passage to communicate with oneself through the second regenerator, the gas turbine has gas passage to communicate with outside through regenerator and evaporator again; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form the photo-thermal integrated fuel combined cycle power device.

7. The photo-thermal co-fuel combined cycle power plant of any one of the 1 st to 6 th embodiments is provided with a diffuser pipe and a second evaporator, wherein the evaporator has an air passage and is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator, and the evaporator has a gas passage and is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator; the pressure boosting pump with condensate pipe and evaporator are communicated and adjusted to form a photo-thermal integrated fuel combined cycle power device, wherein the condensate pipe is arranged on the pressure boosting pump, the second evaporator is further provided with a wet steam channel, and the wet steam channel is communicated with the evaporator through a diffusion pipe.

8. The photo-thermal integrated fuel combined cycle power plant is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the photo-thermal integrated fuel combined cycle power plants in the 1 st to the 7 th, a condenser condensate pipe is communicated with the booster pump and is adjusted to be communicated with the low-temperature heat regenerator through the second booster pump, a steam turbine is additionally provided with a steam extraction channel and is communicated with the low-temperature heat regenerator, and the low-temperature heat regenerator is further communicated with the booster pump through the condensate pipe, so that the photo-thermal integrated fuel combined cycle power plant is formed.

9. The photo-thermal co-fuel combined cycle power plant is formed by adding an expansion speed increaser and replacing a steam turbine in any one of the photo-thermal co-fuel combined cycle power plants in the 7 th step.

10. The photo-thermal co-fuel combined cycle power plant is formed by adding an expansion speed increaser and replacing a steam turbine, adding a newly added diffuser pipe and replacing a booster pump in any one of the photo-thermal co-fuel combined cycle power plants in the 1 st to 8 th modes.

Description of the drawings:

FIG. 1 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the invention.

FIG. 2 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the present invention.

FIG. 3 is a schematic thermodynamic system diagram of a light and heat portable fuel combined cycle power plant according to the present invention.

FIG. 4 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the invention, no. 4.

FIG. 5 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the invention.

FIG. 6 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the invention.

FIG. 7 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the invention.

FIG. 8 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the 8 th principles of the present invention.

FIG. 9 is a schematic thermodynamic system diagram of a photo-thermal co-fuel combined cycle power plant according to the 9 th principles of the present invention.

In the figure, a 1-compressor, a 2-expander, a 3-gas turbine, a 4-combustion chamber, a 5-solar heat collection system, a 6-regenerator, a 7-evaporator, an 8-turbine, a 9-booster pump, a 10-condenser, an 11-second regenerator, a 12-diffuser pipe, a 13-second evaporator, a 14-second booster pump, a 15-low temperature regenerator, an A-expansion speed increaser and a B-newly added diffuser pipe.

The following brief description is given here about the photo-thermal and solar heat collection system:

(1) Solar heat collection systems, also known as solar heating systems, refer to heating systems that utilize a heat collector to convert solar radiant energy into high temperature heat (simply referred to as photo-thermal), which can be used to provide a driving heat load to a thermodynamic cycle system; it is mainly composed of heat collector and related necessary auxiliary facilities.

(2) Types of solar energy collection systems include, but are not limited to: ① The concentrating solar heat collection system mainly comprises a groove type system, a tower type system and a butterfly type system at present; ② The non-concentrating solar heat collecting system has solar pond, solar chimney and other systems.

(3) Solar heat collection systems in a broad sense, including various systems that employ various means and devices to convert solar energy to thermal energy at different temperatures, can be used to meet the thermal demands of different temperatures.

(4) The heat supply modes of the solar heat collection system mainly comprise the following steps: ① The high-temperature heat energy converted by solar energy is directly supplied to a heated medium flowing through a solar heat collection system; ② The high-temperature heat energy converted from solar energy is firstly supplied to the working medium of the self-circulation loop, and then the working medium is supplied to the heated medium flowing through the solar heat collection system through the heat exchanger.

The brief description of the drawings and related expressions of the subject matter is as follows:

Drawing with respect to the drawings: taking fig. 1 as an example, for simplifying drawing, the "expander 2 and air channel are communicated with the outside through the evaporator 7" and the "gas turbine 3 and gas channel are communicated with the outside through the regenerator 6 and the evaporator 7" are shown in a drawing mode that the air channel and the gas channel share one channel in fig. 1; it is also stated that it is an alternative to combine air and fuel gas before entering the evaporator 7 or to combine fuel gas after flowing through the evaporator 7 separately.

The specific embodiment is as follows:

It should be noted that the description of the structure and the flow is not repeated if necessary, and the obvious flow is not described. The invention is described in detail below with reference to the drawings and examples.

The photo-thermal co-fuel combined cycle power plant shown in fig. 1 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside has air passage and compressor 1 to communicate, the compressor 1 has first air passage to communicate with expander 2 through the regenerator 6, the expander 2 has air passage to communicate with outside through evaporator 7, the compressor 1 has second air passage to communicate with combustion chamber 4, there is fuel passage to communicate with combustion chamber 4 outside, combustion chamber 4 has fuel gas passage to communicate with gas turbine 3 through the solar energy heat collecting system 5, the gas turbine 3 has fuel gas passage to communicate with outside through regenerator 6 and evaporator 7; the condenser 10 is provided with a condensate pipeline which is communicated with the evaporator 7 through a booster pump 9, then the evaporator 7 is further provided with a steam channel which is communicated with the steam turbine 8, and the steam turbine 8 is also provided with a low-pressure steam channel which is communicated with the condenser 10; the condenser 10 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, the external air enters the compressor 1 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path is subjected to heat absorption and heating through the heat regenerator 6, is subjected to depressurization and work through the expander 2 and is discharged outwards after heat release and cooling through the evaporator 7, and the second path is subjected to continuous boosting and heating and then enters the combustion chamber 4 to participate in combustion; the external fuel enters the combustion chamber 4, the fuel and the compressed air are mixed in the combustion chamber 4 and combusted to generate high-temperature fuel gas, the fuel gas discharged by the combustion chamber 4 is subjected to heat absorption and temperature rise through the solar heat collection system 5, is subjected to depressurization and work through the gas turbine 3, is subjected to gradual heat release and temperature reduction through the heat regenerator 6 and the evaporator 7, and is discharged outwards; the condensate discharged by the condenser 10 is boosted by the booster pump 9, is subjected to heat absorption, temperature rise and vaporization by the evaporator 7, is subjected to depressurization and work by the steam turbine 8, and then enters the condenser 10 for heat release and condensation; the fuel provides driving heat load through the combustion chamber 4, the solar energy provides driving heat load through the solar heat collection system 5, the cooling medium takes away low-temperature heat load through the condenser 10, and the air and the fuel gas take away discharging heat load through the inlet and outlet flow path; work output by the expander 2, the gas turbine 3 and the steam turbine 8 is provided for the compressor 1 and external power, or work output by the expander 2, the gas turbine 3 and the steam turbine 8 is provided for the compressor 1, the booster pump 9 and external power, so that the photo-thermal integrated fuel combined cycle power device is formed.

The photo-thermal co-fuel combined cycle power plant shown in fig. 2 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside has air passage to communicate with compressor 1, the compressor 1 has first air passage to communicate with expander 2 through the regenerator 6, the expander 2 has air passage to communicate with outside through the evaporator 7, the compressor 1 has second air passage to communicate with combustion chamber 4, the outside has fuel passage to communicate with combustion chamber 4, the combustion chamber 4 has fuel gas passage to communicate with gas turbine 3 through the solar energy heat collecting system 5, the gas turbine 3 has fuel gas passage to communicate with oneself through the regenerator 6, the gas turbine 3 has fuel gas passage to communicate with outside through the evaporator 7 again after the gas passage is communicated with oneself through the regenerator 6; the condenser 10 is provided with a condensate pipeline which is communicated with the evaporator 7 through a booster pump 9, then the evaporator 7 is further provided with a steam channel which is communicated with the steam turbine 8, and the steam turbine 8 is also provided with a low-pressure steam channel which is communicated with the condenser 10; the condenser 10 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the high-temperature gas discharged by the solar heat collection system 5 enters the gas turbine 3 to perform depressurization and work, flows through the heat regenerator 6 to release heat and cool to a certain extent, then enters the gas turbine 3 to continue depressurization and work, flows through the evaporator 7 to release heat and cool and is discharged to the outside, and the photo-thermal energy-carrying and fuel combined cycle power device is formed.

The photo-thermal co-fuel combined cycle power plant shown in fig. 3 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside is provided with an air channel which is communicated with the compressor 1, the compressor 1 is also provided with a first air channel which is communicated with the expander 2 through the heat regenerator 6, the expander 2 is also provided with an air channel which is communicated with the outside through the evaporator 7, the compressor 1 is also provided with a second air channel which is communicated with the combustion chamber 4 through the second heat regenerator 11, the outside is provided with a fuel channel which is communicated with the combustion chamber 4, the combustion chamber 4 is also provided with a gas channel which is communicated with the gas turbine 3 through the solar heat collecting system 5, and the gas turbine 3 is also provided with a gas channel which is communicated with the outside through the second heat regenerator 11, the heat regenerator 6 and the evaporator 7; the condenser 10 is provided with a condensate pipeline which is communicated with the evaporator 7 through a booster pump 9, then the evaporator 7 is further provided with a steam channel which is communicated with the steam turbine 8, and the steam turbine 8 is also provided with a low-pressure steam channel which is communicated with the condenser 10; the condenser 10 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the second path of air discharged by the compressor 1 flows through the second heat regenerator 11 to absorb heat and raise temperature, and then enters the combustion chamber 4 to participate in combustion; the gas discharged by the gas turbine 3 is gradually released and cooled through the second heat regenerator 11, the heat regenerator 6 and the evaporator 7, and then is discharged to the outside, so that the photo-thermal integrated fuel combined cycle power device is formed.

The photo-thermal co-fuel combined cycle power plant shown in fig. 4 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor 1 to communicate, the compressor 1 has first air passage to communicate with expander 2 through the regenerator 6, the expander 2 has air passage to communicate with outside through the evaporator 7, the compressor 1 has second air passage to communicate with combustion chamber 4 through the second regenerator 11, there is fuel passage to communicate with combustion chamber 4 outside, combustion chamber 4 has gas passage to communicate with gas turbine 3 through the solar energy heat collecting system 5, gas turbine 3 has gas passage to communicate with oneself through the second regenerator 11 and regenerator 6 after gas turbine 3 has gas passage to communicate with oneself through the evaporator 7; the condenser 10 is provided with a condensate pipeline which is communicated with the evaporator 7 through a booster pump 9, then the evaporator 7 is further provided with a steam channel which is communicated with the steam turbine 8, and the steam turbine 8 is also provided with a low-pressure steam channel which is communicated with the condenser 10; the condenser 10 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the second path of air discharged by the compressor 1 flows through the second heat regenerator 11 to absorb heat and raise temperature, and then enters the combustion chamber 4 to participate in combustion; the high-temperature gas discharged by the solar heat collection system 5 enters the gas turbine 3 to perform depressurization and work, flows through the second heat regenerator 11 and the heat regenerator 6 to gradually release heat and cool down after reaching a certain degree, then enters the gas turbine 3 to continue depressurization and work, and then flows through the evaporator 7 to release heat and cool down and discharge to the outside to form the photo-thermal integrated fuel combined cycle power device.

The photo-thermal co-fuel combined cycle power plant shown in fig. 5 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor 1 to communicate, the compressor 1 has first air passage to communicate with expander 2 through the regenerator 6, the expander 2 has air passage to communicate with outside through the evaporator 7, the compressor 1 has second air passage to communicate with oneself after the compressor 1 has air passage to communicate with combustion chamber 4 again through the second regenerator 11, the outside has fuel passage to communicate with combustion chamber 4, combustion chamber 4 has fuel gas passage to communicate with gas turbine 3 through the solar energy heat collecting system 5, the gas turbine 3 has fuel gas passage to communicate with outside through the second regenerator 11, regenerator 6 and evaporator 7; the condenser 10 is provided with a condensate pipeline which is communicated with the evaporator 7 through a booster pump 9, then the evaporator 7 is further provided with a steam channel which is communicated with the steam turbine 8, and the steam turbine 8 is also provided with a low-pressure steam channel which is communicated with the condenser 10; the condenser 10 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the external air enters the compressor 1 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path flows through the heat regenerator 6 to absorb heat and then enters the expander 2 to be decompressed and work, and the second path continuously boosts and heats to a certain extent and then enters the second heat regenerator 11 to absorb heat and heat; the air discharged by the second heat regenerator 11 enters the compressor 1 to continuously boost and heat, and then enters the combustion chamber 4 to participate in combustion; the high-temperature gas discharged by the solar heat collection system 5 flows through the gas turbine 3 to perform pressure reduction and work, gradually releases heat and reduces temperature through the second heat regenerator 11, the heat regenerator 6 and the evaporator 7, and then is discharged to the outside to form the photo-thermal co-fuel combined cycle power device.

The photo-thermal co-fuel combined cycle power plant shown in fig. 6 is realized by:

(1) Structurally, the device mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside has air passage and compressor 1 to communicate, the compressor 1 has first air passage to communicate with expander 2 through the regenerator 6, the expander 2 has air passage to communicate with outside through the evaporator 7, the compressor 1 has second air passage to communicate with oneself and then the compressor 1 has air passage to communicate with combustion chamber 4 again after the second regenerator 11 communicates with oneself, there are fuel passages to communicate with combustion chamber 4 outside, the combustion chamber 4 has gas passages to communicate with gas turbine 3 through the solar energy heat collecting system 5, the gas turbine 3 has gas passages to communicate with oneself through the second regenerator 11, the gas turbine 3 has gas passages to communicate with outside again through regenerator 6 and evaporator 7; the condenser 10 is provided with a condensate pipeline which is communicated with the evaporator 7 through a booster pump 9, then the evaporator 7 is further provided with a steam channel which is communicated with the steam turbine 8, and the steam turbine 8 is also provided with a low-pressure steam channel which is communicated with the condenser 10; the condenser 10 is also provided with a cooling medium passage communicating with the outside, and the gas turbine 3 is connected to the compressor 1 and transmits power.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the external air enters the compressor 1 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path flows through the heat regenerator 6 to absorb heat and then enters the expander 2 to be decompressed and work, and the second path continuously boosts and heats to a certain extent and then enters the second heat regenerator 11 to absorb heat and heat; the air discharged by the second heat regenerator 11 enters the compressor 1 to continuously boost and heat, and then enters the combustion chamber 4 to participate in combustion; the high-temperature gas discharged by the solar heat collection system 5 enters the gas turbine 3 to perform depressurization and work, flows through the second heat regenerator 11 to release heat and cool to a certain extent, then enters the gas turbine 3 to continue depressurization and work, then flows through the heat regenerator 6 and the evaporator 7 to release heat and cool gradually and discharge to the outside, and the photo-thermal integrated fuel combined cycle power device is formed.

The photo-thermal co-fuel combined cycle power plant shown in fig. 7 is realized by:

(1) In the combined cycle power plant with photo-thermal and fuel shown in fig. 1, a diffuser pipe and a second evaporator are added, the air channel of the evaporator 7 is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator 13, and the gas channel of the evaporator 7 is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator 13; the booster pump 9 is connected with the evaporator 7 through a condensate pipeline, so that after the booster pump 9 is connected with the second evaporator 13 through the condensate pipeline, the second evaporator 13 is further connected with the evaporator 7 through a diffusion pipe 12 through a wet steam channel.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the air discharged from the expander 2 is gradually released and cooled through the evaporator 7 and the second evaporator 13, and then discharged to the outside; the fuel gas discharged by the heat regenerator 6 flows through the evaporator 7 and the second evaporator 13 to gradually release heat and cool, and then is discharged to the outside; the condensate discharged by the condenser 10 is boosted by the booster pump 9, is subjected to heat absorption and temperature rise, partial vaporization and speed increase by the second evaporator 13, is subjected to speed reduction and pressure boost by the diffuser pipe 12, and then enters the evaporator 7 to absorb heat and vaporization, so that the photo-thermal co-fuel combined cycle power plant is formed.

The photo-thermal co-fuel combined cycle power plant shown in fig. 8 is realized by:

(1) Structurally, in the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, a second booster pump and a low-temperature heat regenerator are added, a condensate pipe of the condenser 10 is communicated with the booster pump 9, the condensate pipe of the condenser 10 is communicated with the low-temperature heat regenerator 15 through the second booster pump 14, a steam turbine 8 is additionally provided with a steam extraction channel to be communicated with the low-temperature heat regenerator 15, and the condensate pipe of the low-temperature heat regenerator 15 is communicated with the booster pump 9.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 10 flows through the second booster pump 14 to be boosted and then enters the low-temperature regenerator 15 to be mixed with the extraction steam from the steam turbine 8, absorbs heat and heats up, and the extraction steam is released to form condensate; condensate of the low-temperature heat regenerator 15 is boosted by the booster pump 9, is subjected to heat absorption, temperature rise and vaporization by the evaporator 7, and then enters the steam turbine 8 to be subjected to pressure reduction and work; the steam entering the steam turbine 8 is decompressed and worked to a certain extent and then is divided into two paths, wherein the first path is provided for the low-temperature heat regenerator 15, and the second path is continuously decompressed and worked and then enters the condenser 10 to release heat and condense, so that the photo-thermal co-fuel combined cycle power plant is formed.

The photo-thermal co-fuel combined cycle power plant shown in fig. 9 is realized by:

(1) Structurally, in the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, an expansion speed increaser A is added to replace a steam turbine 8, a new diffusion pipe B is added to replace a booster pump 9.

(2) In the flow, compared with the photo-thermal integrated fuel combined cycle power plant shown in fig. 1, the difference is that: the condensate of the condenser 10 is subjected to speed reduction and pressure increase through a newly added diffuser pipe B, is subjected to heat absorption, temperature rise and vaporization through an evaporator 7, is subjected to pressure reduction, work and speed increase through an expansion speed increaser A, and then enters the condenser 10 for heat release and condensation; work output by the expander 2, the gas turbine 3 and the expansion speed increaser A is provided for the compressor 1 and external power to form the photo-thermal co-fuel combined cycle power device.

The combined cycle power device capable of achieving the effects of carrying the same fuel by light and heat has the following effects and advantages:

(1) The photo-thermal and conventional fuel share the integrated thermal power system, so that the construction cost of the thermal power system is saved, and the cost performance is high.

(2) The utilization degree of the temperature difference in the back heating link between gases (steam) is high, and the heat-changing work efficiency is improved; and in the regenerative link between the gas (steam) working medium and the liquid working medium, the flow rate of the gas working medium is large, the temperature change interval is relatively narrow, the irreversible loss of the temperature difference is reduced, and the heat-variable work efficiency is improved.

(3) The photo-thermal and conventional fuel provides driving heat load links with small temperature difference loss and high thermodynamic perfection.

(4) Conventional fuels, particularly low-grade fuels, play a role by means of light and heat, and the utilization value of light and heat conversion into mechanical energy is effectively improved.

(5) The photo-thermal and conventional fuel can be carried by different types and grades, the temperature difference loss is small, and the thermodynamic perfection is high.

(6) The driving heat load realizes graded utilization, the irreversible loss of the temperature difference of the system is small, and the heat change work efficiency and the thermodynamic perfection are high.

(7) The conventional fuel can be used for or is beneficial to reducing the boosting ratio of a circulating system, improving the flow of a gas circulating working medium and being beneficial to constructing a large-load photo-thermal integrated fuel combined cycle power device.

(8) By utilizing the characteristics of working media, the temperature difference utilization level in the heat transfer process is improved by adopting a simple technical means, and the heat efficiency is improved.

(9) And a plurality of heat regeneration technical means are provided, so that the coordination of the device in the aspects of power, thermal efficiency, step-up ratio and the like is effectively improved.

(10) The flow is reasonable, the structure is simple, and the scheme is rich; the combined cycle power device is beneficial to improving the energy utilization level and expanding the application range of the combined cycle power device with the photo-thermal energy and the fuel.

Claims (10)

1. The combined cycle power device with the photo-thermal and the fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside is provided with an air channel which is communicated with the compressor (1), the compressor (1) is also provided with a first air channel which is communicated with the expander (2) through the heat regenerator (6), the expander (2) is also provided with an air channel which is communicated with the outside through the evaporator (7), the compressor (1) is also provided with a second air channel which is communicated with the combustion chamber (4), the outside is provided with a fuel channel which is communicated with the combustion chamber (4), the combustion chamber (4) is also provided with a gas channel which is communicated with the gas turbine (3) through the solar heat collection system (5), and the gas turbine (3) is also provided with a gas channel which is communicated with the outside through the heat regenerator (6) and the evaporator (7); the condenser (10) is provided with a condensate pipeline which is communicated with the evaporator (7) through a booster pump (9), the evaporator (7) is further provided with a steam channel which is communicated with the steam turbine (8), and the steam turbine (8) is also provided with a low-pressure steam channel which is communicated with the condenser (10); the condenser (10) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form the photo-thermal combined cycle power plant with the fuel.

2. The combined cycle power device with the photo-thermal and the fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump and a condenser; the outside is provided with an air channel which is communicated with the compressor (1), the compressor (1) is also provided with a first air channel which is communicated with the expander (2) through the heat regenerator (6), the expander (2) is also provided with an air channel which is communicated with the outside through the evaporator (7), the compressor (1) is also provided with a second air channel which is communicated with the combustion chamber (4), the outside is provided with a fuel channel which is communicated with the combustion chamber (4), the combustion chamber (4) is also provided with a gas channel which is communicated with the gas turbine (3) through the solar heat collection system (5), and the gas turbine (3) is also provided with a gas channel which is communicated with the outside through the evaporator (7) after the gas channel is communicated with the gas turbine (3) through the heat regenerator (6); the condenser (10) is provided with a condensate pipeline which is communicated with the evaporator (7) through a booster pump (9), the evaporator (7) is further provided with a steam channel which is communicated with the steam turbine (8), and the steam turbine (8) is also provided with a low-pressure steam channel which is communicated with the condenser (10); the condenser (10) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form the photo-thermal combined cycle power plant with the fuel.

3. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside is provided with an air channel which is communicated with the compressor (1), the compressor (1) is also provided with a first air channel which is communicated with the expander (2) through the heat regenerator (6), the expander (2) is also provided with an air channel which is communicated with the outside through the evaporator (7), the compressor (1) is also provided with a second air channel which is communicated with the combustion chamber (4) through the second heat regenerator (11), the outside is provided with a fuel channel which is communicated with the combustion chamber (4), the combustion chamber (4) is also provided with a gas channel which is communicated with the gas turbine (3) through the solar heat collecting system (5), and the gas turbine (3) is also provided with a gas channel which is communicated with the outside through the second heat regenerator (11), the heat regenerator (6) and the evaporator (7); the condenser (10) is provided with a condensate pipeline which is communicated with the evaporator (7) through a booster pump (9), the evaporator (7) is further provided with a steam channel which is communicated with the steam turbine (8), and the steam turbine (8) is also provided with a low-pressure steam channel which is communicated with the condenser (10); the condenser (10) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form the photo-thermal combined cycle power plant with the fuel.

4. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside is provided with an air channel which is communicated with the compressor (1), the compressor (1) is also provided with a first air channel which is communicated with the expander (2) through the heat regenerator (6), the expander (2) is also provided with an air channel which is communicated with the outside through the evaporator (7), the compressor (1) is also provided with a second air channel which is communicated with the combustion chamber (4) through the second heat regenerator (11), the outside is provided with a fuel channel which is communicated with the combustion chamber (4), the combustion chamber (4) is also provided with a gas channel which is communicated with the gas turbine (3) through the solar heat collecting system (5), and the gas turbine (3) is also provided with a gas channel which is communicated with the outside through the evaporator (7) after the gas channel is also communicated with the gas turbine (3) through the second heat regenerator (11) and the heat regenerator (6); the condenser (10) is provided with a condensate pipeline which is communicated with the evaporator (7) through a booster pump (9), the evaporator (7) is further provided with a steam channel which is communicated with the steam turbine (8), and the steam turbine (8) is also provided with a low-pressure steam channel which is communicated with the condenser (10); the condenser (10) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form the photo-thermal combined cycle power plant with the fuel.

5. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside is provided with an air channel which is communicated with the compressor (1), the compressor (1) is also provided with a first air channel which is communicated with the expander (2) through the heat regenerator (6), the expander (2) is also provided with an air channel which is communicated with the outside through the evaporator (7), the compressor (1) is also provided with a second air channel which is communicated with the compressor (1) through the second heat regenerator (11) and then is communicated with the combustion chamber (4), the outside is provided with a fuel channel which is communicated with the combustion chamber (4), the combustion chamber (4) is also provided with a fuel channel which is communicated with the gas turbine (3) through the solar heat collection system (5), and the gas turbine (3) is also provided with a fuel channel which is communicated with the outside through the second heat regenerator (11), the heat regenerator (6) and the evaporator (7); the condenser (10) is provided with a condensate pipeline which is communicated with the evaporator (7) through a booster pump (9), the evaporator (7) is further provided with a steam channel which is communicated with the steam turbine (8), and the steam turbine (8) is also provided with a low-pressure steam channel which is communicated with the condenser (10); the condenser (10) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form the photo-thermal combined cycle power plant with the fuel.

6. The photo-thermal combined cycle power device with the same fuel mainly comprises a compressor, an expander, a gas turbine, a combustion chamber, a solar heat collection system, a heat regenerator, an evaporator, a steam turbine, a booster pump, a condenser and a second heat regenerator; the outside is provided with an air channel which is communicated with the compressor (1), the compressor (1) is also provided with a first air channel which is communicated with the expander (2) through the heat regenerator (6), the expander (2) is also provided with an air channel which is communicated with the outside through the evaporator (7), the compressor (1) is also provided with a second air channel which is communicated with the compressor through the second heat regenerator (11), the compressor (1) is also provided with an air channel which is communicated with the combustion chamber (4), the outside is provided with a fuel channel which is communicated with the combustion chamber (4), the combustion chamber (4) is also provided with a fuel channel which is communicated with the gas turbine (3) through the solar heat collecting system (5), and the gas turbine (3) is also provided with a fuel channel which is communicated with the outside through the heat regenerator (6) and the evaporator (7) after the gas channel is also communicated with the compressor (3) through the second heat regenerator (11); the condenser (10) is provided with a condensate pipeline which is communicated with the evaporator (7) through a booster pump (9), the evaporator (7) is further provided with a steam channel which is communicated with the steam turbine (8), and the steam turbine (8) is also provided with a low-pressure steam channel which is communicated with the condenser (10); the condenser (10) is also communicated with the outside through a cooling medium channel, and the gas turbine (3) is connected with the compressor (1) and transmits power to form the photo-thermal combined cycle power plant with the fuel.

7. In the combined cycle power plant with photo-thermal and fuel, a diffuser pipe and a second evaporator are added in any one of the combined cycle power plant with photo-thermal and fuel of claims 1-6, the air channel of the evaporator (7) is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator (13), and the gas channel of the evaporator (7) is communicated with the outside and is adjusted to be communicated with the outside through the second evaporator (13); the condensate pipe of the booster pump (9) is communicated with the evaporator (7) and is adjusted to be that after the condensate pipe of the booster pump (9) is communicated with the second evaporator (13), the second evaporator (13) is communicated with the evaporator (7) through a diffusion pipe (12) to form the photo-thermal integrated fuel combined cycle power device.

8. A photo-thermal integrated fuel combined cycle power plant is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the photo-thermal integrated fuel combined cycle power plants in claims 1-7, a condensate pipeline of a condenser (10) is communicated with the booster pump (9) and is adjusted to be communicated with the low-temperature heat regenerator (15) through the second booster pump (14), a steam turbine (8) is additionally provided with a steam extraction channel which is communicated with the low-temperature heat regenerator (15), and the low-temperature heat regenerator (15) is further communicated with the booster pump (9) through the condensate pipeline, so that the photo-thermal integrated fuel combined cycle power plant is formed.

9. The photo-thermal co-fuel combined cycle power plant is formed by adding an expansion speed increaser (A) and replacing a steam turbine (8) in any photo-thermal co-fuel combined cycle power plant in claim 7.

10. A photo-thermal co-fuel combined cycle power plant is characterized in that an expansion speed increaser (A) is added to replace a steam turbine (8), a new diffusion pipe (B) is added to replace a booster pump (9) in any one of the photo-thermal co-fuel combined cycle power plants in claims 1-8, so that the photo-thermal co-fuel combined cycle power plant is formed.