CN102588020A - Solar power generation and thermal power generation combined turbine-generator unit and realizing method - Google Patents
Solar power generation and thermal power generation combined turbine-generator unit and realizing method Download PDFInfo
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Abstract
The invention provides a solar power generation and thermal power generation combined turbine-generator unit and a realizing method. The turbine-generator unit for combined power generation comprises a solar steam power generation system, a thermal power generation system, a solar generation turbine and a thermal power turbine, wherein the solar steam power generation system and the thermal power generation system are integrally combined; the solar generation turbine and the thermal power turbine are coaxially arranged and share a same generator; and the power of the turbine-generator unit for combined power generation is regulated by regulating steam inlet flow of the thermal power turbine, so that mediation requirements of the power system on the power generator unit can be fulfilled without arranging an energy storage system, an auxiliary fuel heater and an auxiliary fuel boiler on the solar steam power generation system. The turbine-generator unit for combined power generation further comprises a condenser, a condensation water pump, a low-pressure heater, a deaerator and a water tank. The realizing method further comprises the step of introducing the extracted steam of the thermal power turbine into the solar steam power generation system and regulating the temperature of the steam, so that the solar power generation turbine is guaranteed to work normally.
Description
Technical field
The present invention relates to thermal power generation and solar steam power field, Turbo-generator Set and implementation method that especially a kind of solar electrical energy generation and thermal power generation are compound.
Background technique
Thermal power generating technology is the technology that the chemical energy of fuel is become electric energy through the hot merit conversion method; Its process is following: the heat energy that at first through boiler the chemical energy of fuel is transformed into steam; And then through steam turbine with steam thermal energy change into rotary machine can, can change rotary machine into electric energy through generator more at last.Fig. 1 is the schematic representation of existing thermal power generation Turbo-generator Set and system; As shown in Figure 1; The fuel heat release of in boiler 1, burning; Water in the boiler is become the steam of high temperature, high pressure, and steam is admitted to the acting of expanding in high-pressure cylinder 2, intermediate pressure cylinder 3 and the low pressure (LP) cylinder 4 of steam turbine through pipeline, turbine rotor is rotated and drive generator 5 to rotate and send electric energy.Doing the steam of completion discharges from turbine low pressure cylinder 4; Condensed into water after vapour condenser 6 coolings; Behind the condensate pump in the thermodynamic system 7, low-pressure heater 8, oxygen-eliminating device and water tank 9; By feed water pump 10 continuous squeeze into boiler (wherein by way of high-pressure heater 11), formed a complete thermodynamic cycle.Admission flow through the control steam turbine is exported with the power that the fuel quantity of increase and decrease boiler can be controlled steam turbine generator easily, satisfies the generated output of electric power system and the requirement of electric power quality.
The solar steam generation technology is the technology that solar energy is become electric energy through the hot merit conversion method; Its process is following: the heat energy that at first through collecting system the radiation energy of the sun is converted into working medium; Through heat exchange the heat energy of working medium is changed into the heat energy of water vapor then; Change heat energy into electric energy through steam turbine and generator more at last, Fig. 2 is the schematic representation of existing solar steam generator set and system, (only being example with the groove type heat collector among the figure) as shown in Figure 2; Heat collector 13 utilizes the radiation energy of the sun to heat oil resistant; Utilize the heat of high temperature oil in vaporizer 16, water to be converted into steam, in superheater 15, steam superheating to be heated up again, the acting of expanding in the superheated vapor entering steam turbine 20 is sent electric energy thereby turbine rotor is rotated and drive generator 5 rotations.Since the radiation energy of the sun be Along with season, round the clock, the variation of factor such as cloud amount and changing constantly; Therefore; Solar heat power generation system must the jumbo energy-storage system 21 of auxiliary construction; Also need in system, increase auxiliary fuel boiler 23 and auxiliary fuel heater 22, can make stable, the continuous operation of Turbo-generator Set, and satisfy the can regulate requirement of Turbo-generator Set electromotive power output.Because jumbo energy-storage system and auxiliary fuel steam generator system increase considerably the investment of solar energy thermal-power-generating engineering, had a strong impact on applying of solar energy thermal-power-generating technology.
Summary of the invention
The purpose of this invention is to provide compound Turbo-generator Set of a kind of solar electrical energy generation and thermal power generation and implementation method; Can be in stable, the continuous operation of Turbo-generator Set that does not have to make under the situation of energy-storage system solar energy; And satisfy the can regulate requirement of Turbo-generator Set electromotive power output, the technical problem that the investment that solves the solar energy thermal-power-generating engineering is big, be difficult to promote.
To achieve these goals, the invention provides the compound Turbo-generator Set of a kind of solar electrical energy generation and thermal power generation, comprising:
Thermal power generation system is used for: obtain high-temperature steam through fuel, promote thermal power steam turbine through steam and generate electricity;
The solar steam power generation system is used for: obtain high-temperature steam through solar energy, promote the solar electrical energy generation steam turbine through steam and generate electricity;
Said solar electrical energy generation steam turbine and the coaxial setting of said thermal power steam turbine, a shared generator has constituted compound Turbo-generator Set;
Admission flow through regulating said thermal power steam turbine is regulated the power of said compound Turbo-generator Set, thereby said solar steam power generation system no longer is provided with energy-storage system, auxiliary fuel heater and auxiliary fuel boiler.
Preferably; In the above-mentioned Turbo-generator Set; The steam that said solar electrical energy generation steam turbine is discharged enters into the vapour condenser of said thermal power generation system, thus said thermal power generation system and the shared said vapour condenser of said solar steam power generation system, condensate pump, low-pressure heater, oxygen-eliminating device and water tank.
Preferably; In the above-mentioned Turbo-generator Set; Also comprise: solar steam power generation system humidity control system; Be used for: when the vapor (steam) temperature rapid change of said solar steam power generation system output, drawing gas of said thermal power steam turbine introduced said solar steam power generation system, thereby ensure said solar electrical energy generation steam turbine proper functioning.
Preferably, in the above-mentioned Turbo-generator Set, also comprise: when sun steam generating system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to get into said solar electrical energy generation steam turbine, make said solar electrical energy generation steam turbine can access good cooling.
In order better to realize that above-mentioned purpose, the present invention also provide the implementation method of the compound Turbo-generator Set of a kind of solar electrical energy generation and thermal power generation, said Turbo-generator Set comprises:
Thermal power generation system is used for: obtain high-temperature steam through fuel, promote thermal power steam turbine through steam and generate electricity;
The solar steam power generation system is used for: obtain high-temperature steam through solar energy, promote the solar electrical energy generation steam turbine through steam and generate electricity;
Said implementation method comprises the steps:
With said solar electrical energy generation steam turbine and the coaxial setting of said thermal power steam turbine, a shared generator has constituted compound Turbo-generator Set;
Admission flow through regulating said thermal power steam turbine is regulated the power of said compound Turbo-generator Set, thereby makes said solar steam power generation system that energy-storage system, auxiliary fuel heater and auxiliary fuel boiler no longer are set.
Preferably; In the above-mentioned implementation method; Also comprise: the steam that said solar electrical energy generation steam turbine is discharged enters into the vapour condenser of said thermal power generation system, thus said firepower electricity steamer power generation system and the shared said vapour condenser of said solar steam power generation system, condensate pump, low-pressure heater, oxygen-eliminating device and water tank.
Preferably; In the above-mentioned implementation method; Also comprise: when the vapor (steam) temperature rapid change of said solar steam power generation system output; Drawing gas of said thermal power steam turbine introduced said solar steam power generation system, vapor (steam) temperature is regulated, thereby ensure said solar electrical energy generation steam turbine proper functioning.
Preferably, in the above-mentioned implementation method, also comprise: when the solar steam power generation system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to get into said solar electrical energy generation steam turbine, make said solar electrical energy generation steam turbine can access good cooling.
There is following technique effect at least in the embodiment of the invention:
1) because the steam turbine of solar heat power generation system is coaxial with the thermal power generation unit; The power output of generator is mediated by the thermal power generation unit fully; Need not build jumbo energy-storage system and auxiliary fuel boiler, both can satisfy the conciliation requirement of electric power system generator set.
2) solar electrical energy generation steam turbine 20 steam of discharging enters into the vapour condenser 6 of said thermal power generation system, thus the shared said vapour condenser of said thermal power generation system and said solar steam power generation system 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank 9.The solar steam power generation system no longer need be built these steam treatment devices again, has practiced thrift the construction investment of solar steam power generation system greatly.
3) when the vapor (steam) temperature rapid change of solar steam power generation system output, drawing gas of said thermal power steam turbine introduced said solar steam power generation system, the steam regulation temperature makes the solar energy steam turbine keep its proper functioning.
4) when the solar steam power generation system is out of service, can utilize the intermediate pressure cylinder steam discharge of thermal power steam turbine to get into the solar electrical energy generation steam turbine, make it can access good cooling.
5) in a word, the system that adopts the embodiment of the invention to provide compares with independent construction solar steam power generation system, can reduce construction investment greatly, simultaneously, can free adjusting online generated output and quality, satisfy the requirement of dispatching of power netwoks.
Description of drawings
Fig. 1 is the schematic representation of existing thermal power generation Turbo-generator Set and system;
Fig. 2 is the schematic representation of existing solar steam generator set and system;
Fig. 3 is the sun generating that provides of the embodiment of the invention and the compound Turbo-generator Set of thermal power generation and the schematic representation of system;
Fig. 4 is the flow chart of the implementation method that provides of the embodiment of the invention.
The device numbering explanation is as follows among Fig. 1, Fig. 2, Fig. 3:
1-boiler 2-high-pressure cylinder 3-intermediate pressure cylinder 4-low pressure (LP) cylinder 5-generator 6-vapour condenser 7-condensate pump 8-low-pressure heater 9-oxygen-eliminating device and water tank 10-feed water pump 11-high-pressure heater 12-solar electrical energy generation feed water pump 13-solar thermal collector 14-heat-storage thermoregulation device 15-superheater 16-vaporizer 17-oil storage tank 18-thermal cycle oil pump 19-isolating valve 20-solar electrical energy generation steam turbine 21-heat reservoir 22-auxiliary fuel heater 23-auxiliary fuel boiler 24-solar generator
Embodiment
For the purpose, technological scheme and the advantage that make the embodiment of the invention is clearer, will combine accompanying drawing that specific embodiment is described in detail below.
Turbo-generator Set as shown in Figure 3, that solar electrical energy generation and thermal power generation are compound comprises:
Thermal power generation system is used for: obtain high-temperature steam through fuel, promote thermal power steam turbine (comprising high-pressure cylinder 2, intermediate pressure cylinder 3 and low pressure (LP) cylinder 4) through steam and generate electricity;
The solar steam power generation system is used for: obtain high-temperature steam through solar energy, promote solar electrical energy generation steam turbine 20 through steam and generate electricity;
Said solar electrical energy generation steam turbine 20 and the coaxial setting of said thermal power steam turbine, a shared generator 5;
Admission flow through regulating said thermal power steam turbine is regulated the power of said compound Turbo-generator Set, thereby said solar steam power generation system no longer is provided with energy-storage system 21, auxiliary fuel heater 22 and auxiliary fuel boiler 23.
It is thus clear that the present invention is positioned over solar electrical energy generation steam turbine 20 between fired power generating unit turbine low pressure cylinder 4 and the generator 5, lumps together with the fired power generating unit steam turbine set, has formed the compound Turbo-generator Set of solar electrical energy generation and thermal power generation.Because the steam turbine of solar power system is coaxial with the thermal power generation unit; The power output of generator is mediated by the thermal power generation unit fully; Need not build jumbo energy-storage system and auxiliary fuel boiler, both can satisfy the conciliation requirement of electric power system generator set.
Wherein, The steam that said solar electrical energy generation steam turbine 20 is discharged enters into the vapour condenser 6 of said thermal power generation system, thus the shared said vapour condenser of said thermal power generation system and said solar steam power generation system 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank 9.It is thus clear that the solar steam power generation system no longer need be built these steam treatment devices again, practiced thrift the construction investment of solar steam power generation system greatly.
Wherein, also comprise: when the vapor (steam) temperature rapid change of said solar steam power generation system output, drawing gas of said thermal power steam turbine introduced said solar steam power generation system, thereby ensure said solar electrical energy generation steam turbine 20 proper functioning.
Wherein, also comprise: when the solar steam power generation system is out of service, can utilize the exhaust of thermal power steam turbine intermediate pressure cylinder to get into the solar electrical energy generation steam turbine, make it can access good cooling.
Specifically referring to shown in Figure 3; The steam that solar steam output system produces gets into the 20 expansion actings of solar electrical energy generation steam turbine; Solar electrical energy generation and thermal power generation common generator 5, vapour condenser 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank 9; Simultaneously, can also utilize exhaust or other level of intermediate pressure cylinder 3 to draw gas solar energy vapor generation system is carried out temperature regulation.During more weak or complete obiteration, can excise the solar electrical energy generation steam generating system when solar irradiance, thermal power steam turbine intermediate pressure cylinder capable of using exhaust or other levels are drawn gas, and get into the solar energy steam turbine it is cooled off.Therefore, the system that adopts the embodiment of the invention to provide compares with independent construction solar power system, can reduce construction investment greatly, simultaneously, can free adjusting online generated output and quality, satisfy the requirement of dispatching of power netwoks.
In the embodiment of the invention, said thermal power generation system is hot unit again or non-hot again unit; The thermal-arrest mode of said solar steam power generation system adopts slot type, tower or dish formula.
The embodiment of the invention also provides the implementation method of the compound power-generating Turbo-generator Set of a kind of solar energy and fossil fuel; Wherein, Said compound power-generating Turbo-generator Set comprises: thermal power generation system; Be used for: obtain high-temperature steam through fuel, promote thermal power steam turbine through steam and generate electricity; The solar steam power generation system is used for: obtain high-temperature steam through solar energy, promote the solar electrical energy generation steam turbine through steam and generate electricity; Fig. 4 is the flow chart of the implementation method that provides of the embodiment of the invention, and as shown in Figure 4, said implementation method comprises:
Said implementation method can also comprise: the steam that said solar electrical energy generation steam turbine 20 is discharged enters into the vapour condenser 6 of said thermal power generation system, thus the shared said vapour condenser of said thermal power generation system and said solar steam power generation system 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank 9.
Said implementation method can also comprise: when the steam rapid change of said solar steam power generation system output, drawing gas of said thermal power steam turbine introduced said solar steam power generation system, thereby ensure said solar electrical energy generation steam turbine 20 proper functioning.
Said implementation method can also comprise: when the solar steam power generation system is out of service, can utilize the intermediate pressure cylinder exhaust of thermal power steam turbine to get into the solar electrical energy generation steam turbine, make it can access good cooling.
In practical application; When the solar energy resources abundant area is built the fired power generating unit of various initial conditionses; All can it be designed to solar electrical energy generation and the compound Turbo-generator Set of thermal power generation; Promptly on the basis of thermoelectricity Turbo-generator Set, set up solar energy steam turbine 20, solar electrical energy generation feed water pump 12, solar thermal collector 13, heat-storage thermoregulation device 14, superheater 15, vaporizer 16, oil storage tank 17, thermal cycle oil pump 18 and relevant pipeline and valve.Generator 5 capacity should be definite through computation optimization according to the concrete condition of the engineerings such as operating mode of the part throttle characteristics of fired power generating unit steam turbine capacity and solar power system capacity and unit place electrical network and unit.
This compound electricity generation system can have two kinds of design proposals:
First kind of scheme: the design rating of former thermal power generation unit need not adjusted; When solar power system was worked, unit output did not increase, but reduced the fuel quantity of boiler; Promptly utilize solar electrical energy generation power to substitute the power of fired power generating unit, saved fuel.This scheme will be carried out an amount of adjustment to exerting oneself of shared vapour condenser 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank according to the heating power calculated case.
Second kind of scheme: in the electrical network that the high crest segment of solar irradiance time and network load matches; Can be on the basis that fired power generating unit equipment is exerted oneself; Improve the design rating of shared devices such as generator 5, vapour condenser 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank 9, i.e. the design rating of stack solar electrical energy generation on the design rating of fired power generating unit.
In order to guarantee that rapid variation does not take place the steam parameter that gets into the solar electrical energy generation steam turbine; Can be according to the match condition of the draw gas parameter and the solar power system steam parameters at different levels of thermal power steam turbine; Select certain one-level of thermal power steam turbine to draw gas, the steam parameter in the solar power system is carried out direct or indirect adjusting.
Steam in the solar power system output can not satisfy under the condition of solar electrical energy generation steam turbine generator proper functioning, can excise solar power system.According to the match condition of the draw gas parameter and the solar power system steam parameters at different levels of thermal power steam turbine, select certain one-level of thermal power steam turbine to draw gas, get into the solar electrical energy generation steam turbine, make it can access good cooling.
By on can know that the embodiment of the invention has following advantage:
1) because the steam turbine of solar heat power generation system is coaxial with the thermal power generation unit; The power output of generator is mediated by the thermal power generation unit fully; Need not build jumbo energy-storage system and auxiliary fuel boiler, both can satisfy the conciliation requirement of electric power system generator set.
2) solar electrical energy generation steam turbine 20 steam of discharging enters into the vapour condenser 6 of said thermal power generation system, thus the shared said vapour condenser of said thermal power generation system and said solar steam power generation system 6, condensate pump 7, low-pressure heater 8, oxygen-eliminating device and water tank 9.The solar steam power generation system no longer need be built these steam treatment devices again.
3) when the vapor (steam) temperature rapid change of solar steam power generation system output, drawing gas of said thermal power steam turbine introduced said solar steam power generation system, thereby ensure said solar electrical energy generation steam turbine proper functioning.
4) when the solar steam power generation system is out of service, can utilize the intermediate pressure cylinder exhaust of thermal power steam turbine to get into the solar electrical energy generation steam turbine, make it can access good cooling.
5) in a word, the system that adopts the embodiment of the invention to provide compares with independent construction solar power system, can reduce construction investment greatly, simultaneously, can free adjusting online generated output and quality, satisfy the requirement of dispatching of power netwoks.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (8)
1. solar electrical energy generation and the compound Turbo-generator Set of thermal power generation comprise:
Thermal power generation system is used for: obtain high-temperature steam through fuel, promote thermal power steam turbine (2,3,4) through steam and generate electricity;
The solar steam power generation system is used for: obtain high-temperature steam through solar energy, promote solar electrical energy generation steam turbine (20) through steam and generate electricity;
It is characterized in that,
Said solar electrical energy generation steam turbine (20) and the coaxial setting of said thermal power steam turbine (2,3,4), a shared generator (5) has constituted compound Turbo-generator Set;
Admission flow through regulating said thermal power steam turbine is regulated the power of said compound Turbo-generator Set, thereby said solar steam power generation system no longer is provided with energy-storage system (21), auxiliary fuel heater (22) and auxiliary fuel boiler (23).
2. Turbo-generator Set according to claim 1 is characterized in that,
The steam that said solar electrical energy generation steam turbine (20) is discharged enters into the vapour condenser (6) of said thermal power generation system, thus said thermal power generation system and the shared said vapour condenser of said solar steam power generation system (6), condensate pump (7), low-pressure heater (8), oxygen-eliminating device and water tank (9).
3. Turbo-generator Set according to claim 1 and 2 is characterized in that, also comprises:
Solar steam power generation system humidity control system; Be used for: when the vapor (steam) temperature rapid change of said solar steam power generation system output; Drawing gas of said thermal power steam turbine introduced said solar steam power generation system, thereby ensure said solar electrical energy generation steam turbine (20) proper functioning.
4. Turbo-generator Set according to claim 1 is characterized in that, also comprises:
When sun steam generating system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to get into said solar electrical energy generation steam turbine (20), make said solar electrical energy generation steam turbine (20) can access good cooling.
5. the implementation method of the compound Turbo-generator Set of solar electrical energy generation and thermal power generation, said Turbo-generator Set comprises:
Thermal power generation system is used for: obtain high-temperature steam through fuel, promote thermal power steam turbine (2,3,4) through steam and generate electricity;
The solar steam power generation system is used for: obtain high-temperature steam through solar energy, promote solar electrical energy generation steam turbine (20) through steam and generate electricity;
It is characterized in that said implementation method comprises the steps:
With said solar electrical energy generation steam turbine (20) and the coaxial setting of said thermal power steam turbine (2,3,4), a shared generator (5) has constituted compound Turbo-generator Set;
Admission flow through regulating said thermal power steam turbine is regulated the power of said compound Turbo-generator Set, thereby makes said solar steam power generation system that energy-storage system (21), auxiliary fuel heater (22) and auxiliary fuel boiler (23) no longer are set.
6. implementation method according to claim 5 is characterized in that, also comprises:
The steam that said solar electrical energy generation steam turbine (20) is discharged enters into the vapour condenser (6) of said thermal power generation system, thus said firepower electricity steamer power generation system and the shared said vapour condenser of said solar steam power generation system (6), condensate pump (7), low-pressure heater (8), oxygen-eliminating device and water tank (9).
7. implementation method according to claim 5 is characterized in that, also comprises:
When the vapor (steam) temperature rapid change of said solar steam power generation system output, drawing gas of said thermal power steam turbine introduced said solar steam power generation system, vapor (steam) temperature is regulated, thereby ensure said solar electrical energy generation steam turbine (20) proper functioning.
8. implementation method according to claim 5 is characterized in that, also comprises:
When the solar steam power generation system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to get into said solar electrical energy generation steam turbine (20), make said solar electrical energy generation steam turbine (20) can access good cooling.
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| CN102900478A (en) * | 2012-09-29 | 2013-01-30 | 华北电力大学 | Novel heat supply steam turbine system and regulation method thereof |
| CN103115348A (en) * | 2013-03-05 | 2013-05-22 | 何敬东 | Device and method for reducing regenerative cycle coal burning heat consumption by using of solar energy |
| CN106318416A (en) * | 2015-06-25 | 2017-01-11 | 中国电力工程顾问集团有限公司 | Baking device |
| CN107916960A (en) * | 2017-12-12 | 2018-04-17 | 中广核工程有限公司 | Nuclear power turbine-generator unit dual-gripper spring discharges and locking logical method and system |
| CN108894546A (en) * | 2018-07-11 | 2018-11-27 | 中国电力工程顾问集团中南电力设计院有限公司 | Biomass and domestic garbage burning electricity generation integration main building arrangement structure |
| CN109138541A (en) * | 2018-07-11 | 2019-01-04 | 中国光大绿色环保有限公司 | Biomass and domestic garbage burning electricity generation integration plant area arragement construction |
| CN110469832A (en) * | 2013-01-07 | 2019-11-19 | 玻点太阳能有限公司 | For selectively being used to include the system and method for improving oil recovery process from solar thermal collector and heater production steam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109138541A (en) * | 2018-07-11 | 2019-01-04 | 中国光大绿色环保有限公司 | Biomass and domestic garbage burning electricity generation integration plant area arragement construction |
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| CN102588020B (en) | 2015-07-15 |
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