CN110821586A - Thermodynamic cycle power generation system and method - Google Patents
Thermodynamic cycle power generation system and method Download PDFInfo
- Publication number
- CN110821586A CN110821586A CN201911035145.4A CN201911035145A CN110821586A CN 110821586 A CN110821586 A CN 110821586A CN 201911035145 A CN201911035145 A CN 201911035145A CN 110821586 A CN110821586 A CN 110821586A
- Authority
- CN
- China
- Prior art keywords
- power generation
- low
- working medium
- pressure side
- gas working
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The application discloses a thermodynamic cycle power generation system and a thermodynamic cycle power generation method, and relates to the technical field of power generation. The thermodynamic cycle power generation system comprises a thermodynamic power generation device, a high-temperature heat regenerator, a low-temperature heat regenerator, a main compressor, a cooler, a first recompressor and a second recompressor to form three loops, wherein a second split stream is pressurized by the second recompressor and then fed back to the thermodynamic power generation device; the received gas working medium is heated by the thermal power generation device to do work for power generation, the gas working medium is divided twice by the thermal cycle power generation system, the flow of the gas working medium entering the cooler is reduced, the heat dissipation loss is reduced, the flow of the gas working medium on the high-pressure side of the high-temperature heat regenerator is smaller than that of the gas working medium on the low-pressure side due to the division of the third loop, the heat exchange efficiency of the high-temperature heat regenerator is improved, meanwhile, the temperature of a pinch point inside the high-temperature heat regenerator and the low-temperature heat regenerator is low, the heat regeneration amount in the high-temperature heat regenerator and the low-temperature heat regenerator is greatly improved, and the heat.
Description
Technical Field
The application relates to the technical field of power generation, in particular to a thermodynamic cycle power generation system and method.
Background
For the coal-fired power generation field, use is made of gaseous working substances (e.g. CO)2) The Brayton cycle has wide application prospect in power generation, and the power generation efficiency of the Brayton cycle at the grade of 600 ℃ can reach the power generation efficiency of a steam Rankine cycle at 650-700 ℃.
In the prior art, a steam circulation system is commonly used for generating electricity, but the efficiency of generating electricity by using the steam circulation system is low. In addition, the process of generating electricity by utilizing gas working medium circulation and the process of generating electricity by utilizing water vapor circulation are greatly different, if a typical gas working medium circulation mode is directly applied to a coal-fired generator set, because the temperature of the working medium at the inlet of the first economizer is far higher than that of the water vapor circulation unit under the same parameter, the temperature of the flue gas at the outlet of the first economizer is too high, and the catalytic reduction device cannot normally work, therefore, the coal-fired generator set is provided with the second economizer, and the low-temperature working medium is introduced into the second economizer to absorb heat so as to reduce the exhaust gas temperature of the boiler. However, the coal-fired power generating unit with the structure has low heat exchange efficiency and large heat dissipation loss.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a thermodynamic cycle power generation system, including a thermodynamic power generation device, a high-temperature regenerator, a low-temperature regenerator, a main compressor, a cooler, a first recompressor and a second recompressor;
the thermal power generation device, the high-pressure side of the high-temperature heat regenerator, the high-pressure side of the low-temperature heat regenerator, the cooler, the main compressor, the low-pressure side of the low-temperature heat regenerator, the low-pressure side of the high-temperature heat regenerator and the thermal power generation device are sequentially connected to form a first loop;
the thermal power generation device, the high-pressure side of the high-temperature regenerator, the high-pressure side of the low-temperature regenerator, the first recompressor, the low-pressure side of the high-temperature regenerator and the thermal power generation device are sequentially connected to form a second loop;
the thermal power generation device, the high-pressure side of the high-temperature heat regenerator, the second recompressor and the thermal power generation device are sequentially connected to form a third loop.
In a second aspect, the embodiment of the present application further provides a thermodynamic cycle power generation method, which is applied to the thermodynamic cycle power generation system described above, and the method includes:
the high-pressure side of the high-temperature heat regenerator enables a gas working medium output by the thermal power generation device to release heat and cool, and then the gas working medium is divided into a first flow divider and a second flow divider;
the high-pressure side of the low-temperature heat regenerator enables the first shunt of the gas working medium output by the high-temperature heat regenerator to release heat and cool, and then the first shunt is shunted again to obtain a third shunt and a fourth shunt;
the cooler cools the third sub-stream and inputs the third sub-stream into the main compressor, and the main compressor pressurizes the third sub-stream and inputs the third sub-stream to the low-pressure side of the low-temperature heat regenerator;
the low-pressure side of the low-temperature heat regenerator enables the third shunt to absorb heat and raise the temperature, and the low-pressure side of the high-temperature heat regenerator enables the third shunt output by the low-temperature heat regenerator to absorb heat and raise the temperature again and feed the third shunt back to the thermal power generation device;
after the first recompressor pressurizes the fourth split stream, the low-pressure side of the high-temperature heat regenerator enables the third split stream output by the first recompressor to absorb heat and raise the temperature, and the third split stream is fed back to the thermal power generation device;
the second recompressor pressurizes the second split stream and feeds the second split stream back to the thermal power generation device;
the thermal power generation device heats the received gas working medium to do work and generate power.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: the thermodynamic cycle power generation system is provided with three loops, and the working process is as follows: the high-pressure side of the high-temperature heat regenerator enables a gas working medium output by the thermal power generation device to release heat and cool, and then the gas working medium is divided into a first flow divider and a second flow divider; the first shunt of the gas working medium output by the high-temperature heat regenerator is subjected to heat release and temperature reduction through the high-pressure side of the low-temperature heat regenerator, and then the first shunt is shunted again to obtain a third shunt and a fourth shunt; cooling the third sub-stream by the cooler and inputting the cooled third sub-stream into the main compressor, and pressurizing the third sub-stream by the main compressor and inputting the pressurized third sub-stream to the low-pressure side of the low-temperature heat regenerator; the third shunt is subjected to heat absorption and temperature rise through the low-pressure side of the low-temperature heat regenerator, and the third shunt output by the low-temperature heat regenerator is subjected to heat absorption and temperature rise again through the low-pressure side of the high-temperature heat regenerator and is fed back to the thermal power generation device; after the fourth split stream is pressurized by the first secondary compressor, the low-pressure side of the high-temperature heat regenerator enables the third split stream output by the first secondary compressor to absorb heat and raise the temperature, and the third split stream is fed back to the thermal power generation device; the second split stream is pressurized by a second recompressor and then fed back to the thermal power generation device; the received gas working medium is heated by the thermal power generation device to do work for power generation, the thermal cycle power generation system shunts the gas working medium twice, the flow of the gas working medium entering the cooler is reduced, the heat dissipation loss is greatly reduced, in addition, the shunting of the third loop enables the flow of the gas working medium on the high-pressure side of the high-temperature heat regenerator to be smaller than the flow of the gas working medium on the low-pressure side, the heat exchange efficiency of the high-temperature heat regenerator is improved, meanwhile, the temperature of a pinch point inside the high-temperature heat regenerator and the low-temperature heat regenerator is low, the heat regeneration amount in the high-temperature heat regenerator and the low-temperature heat regenerator is greatly improved, and the.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a block diagram of a thermodynamic cycle power generation system provided in an embodiment of the present application;
fig. 2 is a block diagram of a thermal power generation device according to an embodiment of the present disclosure;
fig. 3 is a block diagram of another embodiment of a thermal power generation device provided in an embodiment of the present application;
FIG. 4 is a flow chart of a thermodynamic cycle power generation method provided by an embodiment of the present application;
FIG. 5 is a detailed sub-flowchart of one implementation of S47 provided by an embodiment of the present application;
fig. 6 is a detailed sub-flowchart of an implementation manner of S47 provided in this embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present application provides a thermodynamic cycle power generation system, which includes a thermodynamic power generation device 101, a high-temperature regenerator 102, a low-temperature regenerator 103, a main compressor 105, a cooler 104, a first recompressor 106, and a second recompressor 107. In the embodiment of the present application, part of the devices of the thermal power generation apparatus 101 are located in a coal-fired boiler, and heat generated by burning coal in the coal-fired boiler heats CO2, so as to generate supercritical CO2 as a gas working medium to perform thermal cycle in a first loop, a second loop and a third loop, which are described below, respectively.
Specifically, the thermal power generation device 101, the high-pressure side of the high-temperature regenerator 102, the high-pressure side of the low-temperature regenerator 103, the cooler 104, the main compressor 105, the low-pressure side of the low-temperature regenerator 103, the low-pressure side of the high-temperature regenerator 102, and the thermal power generation device 101 are sequentially connected to form a first loop.
Specifically, the thermal power generation device 101, the high-pressure side of the high-temperature regenerator 102, the high-pressure side of the low-temperature regenerator 103, the first recompressor 106, the low-pressure side of the high-temperature regenerator 102, and the thermal power generation device 101 are sequentially connected to form a second loop.
Specifically, the thermal power generation device 101, the high-pressure side of the high-temperature regenerator 102, the second recompressor 107, and the thermal power generation device 101 are sequentially connected to form a third loop.
The thermodynamic cycle power generation system is provided with three loops, and the working process is as follows: the high-pressure side of the high-temperature heat regenerator 102 enables the gas working medium output by the thermal power generation device 101 to release heat and cool, and then the gas working medium is divided into a first flow divider and a second flow divider; the first split flow of the gas working medium output by the high-temperature heat regenerator 102 is subjected to heat release and temperature reduction through the high-pressure side of the low-temperature heat regenerator 103, and then the first split flow is split again to obtain a third split flow and a fourth split flow; cooling the third split stream by a cooler 104 and inputting the cooled third split stream into a main compressor 105, and pressurizing the third split stream by the main compressor 105 and inputting the pressurized third split stream to the low-pressure side of the low-temperature heat regenerator 103; the third split stream is subjected to heat absorption and temperature rise through the low-pressure side of the low-temperature heat regenerator 103, and the third split stream output by the low-temperature heat regenerator 103 is subjected to heat absorption and temperature rise again through the low-pressure side of the high-temperature heat regenerator 102 and fed back to the thermal power generation device 101; after the fourth split stream is pressurized by the first recompressor 106, the low-pressure side of the high-temperature heat regenerator 102 makes the third split stream output by the first recompressor 106 absorb heat and raise the temperature, and the third split stream is fed back to the thermal power generation device 101; the second split stream is pressurized by a second recompressor 107 and then fed back to the thermal power generation device 101; the received gas working medium is heated by the thermal power generation device 101 to do work for power generation, the gas working medium is divided twice by the thermal power cycle power generation system, the flow of the gas working medium entering the cooler 104 is reduced, the heat dissipation loss is greatly reduced, in addition, the flow of the gas working medium on the high-pressure side of the high-temperature heat regenerator 102 is smaller than that of the gas working medium on the low-pressure side due to the division of the third loop, the heat exchange efficiency of the high-temperature heat regenerator 102 is improved, meanwhile, the temperature of a clamping point inside the high-temperature heat regenerator 102 and the low-temperature heat regenerator 103 is low, the heat return amount in the high-temperature heat regenerator 102 and the low-temperature heat regenerator 103 is greatly improved.
Specifically, as one embodiment, as shown in fig. 2, the thermal power generation device 101 includes a first economizer 108, a main heater 109, a high pressure turbine 110, a reheater 111, a low pressure turbine 112, and a generator 114, which are connected in this order. The first economizer 108 is connected to the low-pressure side of the high-temperature regenerator 102, the low-pressure turbine 112 is connected to the high-pressure side of the high-temperature regenerator 102, and the high-pressure turbine 110 and the low-pressure turbine 112 are respectively connected to the generator 114.
The power generation principle of the thermal power generation device 101 of this embodiment is as follows: the first economizer 108 heats the received gas working medium and inputs the gas working medium into the main heater 109 for heating; the high-pressure turbine 110 applies work to the generator 114 according to the heated gas working medium to generate power, and then inputs the gas working medium to the reheater 111 to reheat; the low pressure turbine 112 applies work to the generator 114 according to the reheated gas working medium to generate power, and then inputs the gas working medium to the low pressure side of the high temperature regenerator 102.
As another embodiment, as shown in fig. 3, the thermal power generation device 101 includes a second economizer 113, a first economizer 108, a main heater 109, a high pressure turbine 110, a reheater 111, a low pressure turbine 112, and a generator 114, which are connected in sequence, wherein an air inlet of the first economizer 108 and an air outlet of the second economizer 113 are both connected to a low pressure side of the high temperature regenerator 102, and an air inlet of the second economizer 113 is connected to the second recompressor 107.
The power generation principle of the thermal power generation device 101 of this embodiment is as follows: the second economizer 113 receives the gas working medium output by the second recompressor 107, heats the gas working medium and inputs the heated gas working medium into the first economizer 108; the first economizer 108 heats the received gas working medium output by the low-pressure side of the high-temperature regenerator 102 and the second economizer 113, and inputs the gas working medium into the main heater 109 for heating; the temperature of the gas working medium raised by the second economizer 113 is greater than a preset threshold value, the high-pressure turbine 110 applies work to the generator 114 according to the heated gas working medium to generate power, and then the gas working medium is input to the reheater 111 to be reheated; the low pressure turbine 112 applies work to the generator 114 according to the reheated gas working medium to generate power, and then inputs the gas working medium to the low pressure side of the high temperature regenerator 102.
Because the temperature of the gas working medium in the second economizer 113 is increased to be higher than the preset threshold value, the heat absorption capacity of the gas working medium in the second economizer 113 is higher, the smoke temperature at the outlet of the second economizer 113 can be reduced to a reasonable level, and the heat efficiency of the boiler is improved. In addition, based on the fact that the temperature of the gas working medium heated in the second economizer 113 is greater than the preset threshold value, it is doubtful that the gas working medium is continuously heated at the outlet of the first economizer 108, the gas working medium continuously absorbs heat in the first economizer 108, and the smoke temperature at the outlet of the first economizer 108 is also reduced to a reasonable level, so that the thermal efficiency of the boiler is further improved.
In addition, the number of the second recompressors 107 may be one. Alternatively, the number of the second recompressors 107 is at least two (for example, two, three, four, etc., which are not limited herein), the number of the third circuits is the same as the number of the compressors, and the thermal power generation device 101, the high-pressure side of the high-temperature regenerator 102, each second recompressor 107, and the thermal power generation device 101 are connected in sequence to form one third circuit.
Referring to fig. 4, an embodiment of the present application further provides a thermodynamic cycle power generation method applied to a thermodynamic cycle power generation system. The thermodynamic cycle power generation system includes a thermal power generation device 101, a high temperature regenerator 102, a low temperature regenerator 103, a main compressor 105, a cooler 104, a first recompressor 106, and a second recompressor 107. The method comprises the following steps:
s41: the high-pressure side of the high-temperature heat regenerator 102 releases heat and cools the gas working medium output by the thermal power generation device 101, and then the gas working medium is divided into a first flow divider and a second flow divider.
S42: the high-pressure side of the low-temperature regenerator 103 releases heat and lowers the temperature of the first split flow of the gas working medium output by the high-temperature regenerator 102, and then the first split flow is split again to obtain a third split flow and a fourth split flow.
S43: the cooler 104 cools the third split stream and inputs the cooled third split stream to the main compressor 105, and the main compressor 105 pressurizes the third split stream and inputs the pressurized third split stream to the low-pressure side of the low-temperature regenerator 103.
S44: the low-pressure side of the low-temperature heat regenerator 103 absorbs heat from the third split stream to increase the temperature, and the low-pressure side of the high-temperature heat regenerator 102 absorbs heat from the third split stream output by the low-temperature heat regenerator 103 to increase the temperature again, and feeds the third split stream back to the thermal power generation device 101.
S45: after the first recompressor 106 pressurizes the fourth split stream, the low-pressure side of the high-temperature regenerator 102 absorbs heat from the third split stream output by the first recompressor 106 to raise the temperature, and feeds the third split stream back to the thermal power generation device 101.
S46: the second recompressor 107 pressurizes the second split stream and feeds it back to the thermal power plant 101.
S47: the thermal power generation device 101 heats the received gas working medium to do work and generate power.
The thermodynamic cycle power generation system is provided with three loops, and the thermodynamic cycle power generation method enables a gas working medium output by a thermodynamic power generation device 101 to release heat and cool through the high-pressure side of a high-temperature heat regenerator 102, and then divides the gas working medium into a first branch flow and a second branch flow; the first split flow of the gas working medium output by the high-temperature heat regenerator 102 is subjected to heat release and temperature reduction through the high-pressure side of the low-temperature heat regenerator 103, and then the first split flow is split again to obtain a third split flow and a fourth split flow; cooling the third split stream by a cooler 104 and inputting the cooled third split stream into a main compressor 105, and pressurizing the third split stream by the main compressor 105 and inputting the pressurized third split stream to the low-pressure side of the low-temperature heat regenerator 103; the third split stream is subjected to heat absorption and temperature rise through the low-pressure side of the low-temperature heat regenerator 103, and the third split stream output by the low-temperature heat regenerator 103 is subjected to heat absorption and temperature rise again through the low-pressure side of the high-temperature heat regenerator 102 and fed back to the thermal power generation device 101; after the fourth split stream is pressurized by the first recompressor 106, the low-pressure side of the high-temperature heat regenerator 102 makes the third split stream output by the first recompressor 106 absorb heat and raise the temperature, and the third split stream is fed back to the thermal power generation device 101; the second split stream is pressurized by a second recompressor 107 and then fed back to the thermal power generation device 101; the received gas working medium is heated by the thermal power generation device 101 to do work for power generation, the gas working medium is divided twice by the thermal power cycle power generation system, the flow of the gas working medium entering the cooler 104 is reduced, the heat dissipation loss is greatly reduced, in addition, the flow of the gas working medium on the high-pressure side of the high-temperature heat regenerator 102 is smaller than that of the gas working medium on the low-pressure side due to the division of the third loop, the heat exchange efficiency of the high-temperature heat regenerator 102 is improved, meanwhile, the temperature of a clamping point inside the high-temperature heat regenerator 102 and the low-temperature heat regenerator 103 is low, the heat return amount in the high-temperature heat regenerator 102 and the low-temperature heat regenerator 103 is greatly improved.
Specifically, the thermal power generation device 101 includes a first economizer 108, a main heater 109, a high-pressure turbine 110, a reheater 111, a low-pressure turbine 112, and a generator 114, which are connected in sequence, wherein the first economizer 108 is connected to a low-pressure side of the high-temperature regenerator 102, the low-pressure turbine 112 is connected to a high-pressure side of the high-temperature regenerator 102, the high-pressure turbine 110 and the low-pressure turbine 112 are respectively connected to the generator 114, and S47 includes:
s51: the first economizer 108 heats the received gas working medium and inputs the gas working medium into the main heater 109 for heating.
Specifically, the first economizer 108 heats the received gas working medium, inputs the heated gas working medium into the gas-cooled wall of the coal-fired boiler for continuous heating, and finally enters the main heater 109 for heating.
S52: the high pressure turbine 110 applies work to the generator 114 according to the heated gas working medium to generate power, and then inputs the gas working medium to the reheater 111 to reheat.
S53: the low pressure turbine 112 applies work to the generator 114 according to the reheated gas working medium to generate power, and then inputs the gas working medium to the low pressure side of the high temperature regenerator 102.
As another embodiment, the thermal power generation device 101 includes a second economizer 113, a first economizer 108, a main heater 109, a high-pressure turbine 110, a reheater 111, a low-pressure turbine 112, and a generator 114, which are connected in sequence, wherein an air inlet of the first economizer 108 and an air outlet of the second economizer 113 are both connected to a low-pressure side of the high-temperature regenerator 102, and a temperature rise of the gas working medium by the second economizer 113 is greater than a preset threshold value. The second economizer 113 has an inlet connected to the second recompressor 107, and S47 includes:
s61: the second economizer 113 receives the gas working medium output by the second recompressor 107, heats the gas working medium and inputs the heated gas working medium to the first economizer 108.
S62: the first economizer 108 heats the received gas working medium output by the second economizer 113 and the low-pressure side of the high-temperature regenerator 102, and inputs the gas working medium into the main heater 109 for heating.
S63: the high pressure turbine 110 applies work to the generator 114 according to the heated gas working medium to generate power, and then inputs the gas working medium to the reheater 111 to reheat.
S64: the low pressure turbine 112 applies work to the generator 114 according to the reheated gas working medium to generate power, and then inputs the gas working medium to the low pressure side of the high temperature regenerator 102.
Alternatively, the number of the second recompressors 107 may be one; or, the number of the second recompressors 107 is at least two, the number of the third circuits is the same as that of the compressors, and the thermal power generation device 101, the high-pressure side of the high-temperature regenerator 102, each second recompressor 107 and the thermal power generation device 101 are connected in sequence to form one third circuit.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Claims (10)
1. A thermal cycle power generation system is characterized by comprising a thermal power generation device, a high-temperature heat regenerator, a low-temperature heat regenerator, a main compressor, a cooler, a first recompressor and a second recompressor;
the thermal power generation device, the high-pressure side of the high-temperature heat regenerator, the high-pressure side of the low-temperature heat regenerator, the cooler, the main compressor, the low-pressure side of the low-temperature heat regenerator, the low-pressure side of the high-temperature heat regenerator and the thermal power generation device are sequentially connected to form a first loop;
the thermal power generation device, the high-pressure side of the high-temperature heat regenerator, the high-pressure side of the low-temperature heat regenerator, the first recompressor, the low-pressure side of the high-temperature heat regenerator and the thermal power generation device are sequentially connected to form a second loop;
the thermal power generation device, the high-pressure side of the high-temperature heat regenerator, the second recompressor and the thermal power generation device are sequentially connected to form a third loop.
2. The thermodynamic cycle power generation system of claim 1, wherein the thermodynamic power generation device comprises a first economizer, a main heater, a high pressure turbine, a reheater, a low pressure turbine and a generator connected in sequence, wherein the first economizer is connected to a low pressure side of the high temperature regenerator, the low pressure turbine is connected to a high pressure side of the high temperature regenerator, and the high pressure turbine and the low pressure turbine are respectively connected to the generator.
3. The thermodynamic cycle power generation system of claim 1, wherein the thermodynamic power generation device comprises a second economizer, a first economizer, a main heater, a high pressure turbine, a reheater, a low pressure turbine and a generator, which are connected in sequence, wherein a gas inlet of the first economizer and a gas outlet of the second economizer are both connected to a low pressure side of the high temperature regenerator, a gas inlet of the second economizer is connected to the second recompressor, and wherein the temperature rise of the second economizer on the gas working medium is greater than a preset threshold value.
4. The thermodynamic cycle power generation system of claim 1, wherein the number of the second recompressors is one.
5. The thermodynamic cycle power generation system of claim 1, wherein the number of the second recompressors is at least two, the number of the third circuits is the same as the number of the compressors, and the thermodynamic power generation device, the high-pressure side of the high-temperature regenerator, each of the second recompressors, and the thermodynamic power generation device are connected in sequence to form one of the third circuits.
6. A thermodynamic cycle power generation method applied to the thermodynamic cycle power generation system according to claim 1, the method comprising:
the high-pressure side of the high-temperature heat regenerator enables a gas working medium output by the thermal power generation device to release heat and cool, and then the gas working medium is divided into a first flow divider and a second flow divider;
the high-pressure side of the low-temperature heat regenerator enables the first shunt of the gas working medium output by the high-temperature heat regenerator to release heat and cool, and then the first shunt is shunted again to obtain a third shunt and a fourth shunt;
the cooler cools the third split stream and inputs the cooled third split stream into the main compressor, and the main compressor pressurizes the third split stream and inputs the third split stream into the low-pressure side of the low-temperature heat regenerator;
the low-pressure side of the low-temperature heat regenerator enables the third shunt to absorb heat and raise the temperature, and the low-pressure side of the high-temperature heat regenerator enables the third shunt output by the low-temperature heat regenerator to absorb heat and raise the temperature again and feed the third shunt back to the thermal power generation device;
after the first recompressor pressurizes the fourth split stream, the low-pressure side of the high-temperature heat regenerator enables the third split stream output by the first recompressor to absorb heat and raise the temperature, and the third split stream is fed back to the thermal power generation device;
the second recompressor pressurizes the second split stream and feeds the second split stream back to the thermal power generation device;
the thermal power generation device heats the received gas working medium to do work and generate power.
7. The thermodynamic cycle power generation method according to claim 6, wherein the thermodynamic power generation device comprises a first economizer, a main heater, a high-pressure turbine, a reheater, a low-pressure turbine and a generator, which are connected in sequence, wherein the first economizer is connected to a low-pressure side of the high-temperature regenerator, the low-pressure turbine is connected to a high-pressure side of the high-temperature regenerator, the high-pressure turbine and the low-pressure turbine are respectively connected to the generator, and the thermodynamic power generation device heats the received gas working medium to perform work and power generation comprises:
the first economizer heats the received gas working medium and inputs the gas working medium into the main heater for heating;
the high-pressure turbine applies work to the generator to generate power according to the heated gas working medium, and then the gas working medium is input into the reheater to be reheated;
and the low-pressure turbine applies work to the generator to generate power according to the reheated gas working medium, and then inputs the gas working medium to the low-pressure side of the high-temperature heat regenerator.
8. The thermodynamic cycle power generation method according to claim 6, wherein the thermodynamic power generation device comprises a second economizer, a first economizer, a main heater, a high-pressure turbine, a reheater, a low-pressure turbine and a generator, which are connected in sequence, wherein a gas inlet of the first economizer and a gas outlet of the second economizer are both connected to a low-pressure side of the high-temperature regenerator, a gas inlet of the second economizer is connected to the second recompressor, and the thermodynamic power generation device heats the received gas working medium to apply work to generate power comprises:
the second economizer receives the gas working medium output by the second recompressor, heats the gas working medium and inputs the gas working medium to the first economizer;
the first economizer heats the received gas working medium output by the second economizer on the low-pressure side of the high-temperature regenerator and inputs the gas working medium into the main heater for heating, wherein the temperature rise of the second economizer on the gas working medium is greater than a preset threshold value;
the high-pressure turbine applies work to the generator to generate power according to the heated gas working medium, and then the gas working medium is input into the reheater to be reheated;
and the low-pressure turbine applies work to the generator to generate power according to the reheated gas working medium, and then inputs the gas working medium to the low-pressure side of the high-temperature heat regenerator.
9. The thermodynamic cycle power generation method of claim 6, wherein the number of the second recompressors is one.
10. The thermodynamic cycle power generation method of claim 6, wherein the number of the second recompressors is at least two, the number of the third circuits is the same as the number of the compressors, and the thermodynamic power generation device, the high-pressure side of the high-temperature regenerator, each of the second recompressors, and the thermodynamic power generation device are connected in sequence to form one third circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035145.4A CN110821586B (en) | 2019-10-29 | 2019-10-29 | Thermodynamic cycle power generation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035145.4A CN110821586B (en) | 2019-10-29 | 2019-10-29 | Thermodynamic cycle power generation system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110821586A true CN110821586A (en) | 2020-02-21 |
| CN110821586B CN110821586B (en) | 2022-08-19 |
Family
ID=69550856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911035145.4A Active CN110821586B (en) | 2019-10-29 | 2019-10-29 | Thermodynamic cycle power generation system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110821586B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727868A (en) * | 2015-03-17 | 2015-06-24 | 西安热工研究院有限公司 | Coal-based novel supercritical working medium multistage distribution reheat efficient power generation system |
| CN107131016A (en) * | 2017-04-19 | 2017-09-05 | 华北电力大学 | Supercritical CO2Combine coal-fired thermal power generation system with organic Rankine bottoming cycle |
| CN108612573A (en) * | 2018-07-05 | 2018-10-02 | 华北电力大学 | A kind of supercritical carbon dioxide Brayton cycle electricity generation system |
| CN110030048A (en) * | 2019-04-28 | 2019-07-19 | 三峡大学 | A kind of S-CO2Recycle the nuclear power generating system combined with ORC circulation and heat circulation method |
-
2019
- 2019-10-29 CN CN201911035145.4A patent/CN110821586B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727868A (en) * | 2015-03-17 | 2015-06-24 | 西安热工研究院有限公司 | Coal-based novel supercritical working medium multistage distribution reheat efficient power generation system |
| CN107131016A (en) * | 2017-04-19 | 2017-09-05 | 华北电力大学 | Supercritical CO2Combine coal-fired thermal power generation system with organic Rankine bottoming cycle |
| CN108612573A (en) * | 2018-07-05 | 2018-10-02 | 华北电力大学 | A kind of supercritical carbon dioxide Brayton cycle electricity generation system |
| CN110030048A (en) * | 2019-04-28 | 2019-07-19 | 三峡大学 | A kind of S-CO2Recycle the nuclear power generating system combined with ORC circulation and heat circulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110821586B (en) | 2022-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101567712B1 (en) | Hybrid power generation system and method using a supercritical CO2 cycle | |
| US5564269A (en) | Steam injected gas turbine system with topping steam turbine | |
| US20100242429A1 (en) | Split flow regenerative power cycle | |
| CN110030048B (en) | S-CO 2 Nuclear power generation system combining cycle and ORC cycle and thermal energy cycle method | |
| CN107327325B (en) | Supercritical carbon dioxide and liquid metal combined cycle system | |
| CN110230518B (en) | Coal-based supercritical CO 2 Brayton cycle power generation system and method | |
| Moroz et al. | Study of a supercritical CO2 power cycle application in a cogeneration power plant | |
| CN113153462A (en) | Waste heat auxiliary heating condensed water system and method for supercritical carbon dioxide circulation cold end | |
| CN214741510U (en) | Waste heat auxiliary heating condensate system for supercritical carbon dioxide circulation cold end | |
| CN110821586B (en) | Thermodynamic cycle power generation system and method | |
| CN109372600B (en) | Backheating coal-based supercritical CO 2 Secondary reheating power generation system | |
| CN110318961B (en) | Steam turbine set of power station and power generation method thereof | |
| CN109488401B (en) | Heat pump type waste heat utilization system | |
| KR101936327B1 (en) | Combined Heat and power system using supercritical carbon dioxide power cycle | |
| CN109715916B (en) | Power cycle system and method | |
| CN114382562B (en) | Shunt recompression pure oxygen combustion circulation system | |
| Tahmasebipour et al. | Conceptual design of a super-critical CO2 brayton cycle based on stack waste heat recovery for shazand power plant in Iran | |
| Valentin et al. | Optimization of a decoupled combined cycle gas turbine integrated in a particle receiver solar power plant | |
| CN210768960U (en) | Coal-fired power generation system with carbon capturing device | |
| CN210317417U (en) | Coal-fired power generation system | |
| CN114038600A (en) | Reheating power generation system for high-temperature gas cooled reactor and working method thereof | |
| JPS60138214A (en) | Gas turbine composite cycle power generating plant | |
| CN209800038U (en) | S-CO2Nuclear power generation system with cycle and ORC cycle combined | |
| CN218151091U (en) | S-CO2 power generation system based on fluidized bed and steam turbine | |
| JP2004044533A (en) | Turbine equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |