CN102588020B - 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, the Turbo-generator Set of especially a kind of solar electrical energy generation and thermal power generation compound and implementation method.
Background technique
Thermal power generating technology is the technology chemical energy of fuel being become electric energy by heat to power output method, its process is as follows: the heat energy first by boiler, the converts chemical energy of fuel being become steam, and then change steam thermal energy into rotary machine energy by steam turbine, finally can change rotary machine into electric energy by generator again.Fig. 1 is the schematic diagram of existing thermal power generation Turbo-generator Set and system, as shown in Figure 1, fuel is combustion heat release in boiler 1, water in boiler is become the steam of high temperature, high pressure, steam is admitted in the high-pressure cylinder 2 of steam turbine, intermediate pressure cylinder 3 and low pressure (LP) cylinder 4 by pipeline and carries out expansion work, turbine rotor is rotated and drive electrical generators 5 rotates and sends electric energy.Do the steam completed to discharge from turbine low pressure cylinder 4, water is condensed into after being cooled by vapour condenser 6, after the condensate pump 7 in thermodynamic system, low-pressure heater 8, deaerator and water tank 9, squeezed into boiler (wherein by way of high-pressure heater 11) by feed water pump 10 continuous print, define a complete thermodynamic cycle.The power stage of steam turbine generator can be controlled by the fuel quantity of the admission flow and increase and decrease boiler that control steam turbine easily, meet the generated output of electric power system and the requirement of power quality.
Solar steam generation technology is technology solar energy being become electric energy by heat to power output method, its process is as follows: the heat energy first by collecting system, the radiation energy of the sun being converted into working medium, then be the heat energy of water vapor by heat exchange by the thermal energy of working medium, last is electric energy by steam turbine and generator by thermal energy again, Fig. 2 is the schematic diagram of existing solar steam generator set and system, as shown in Figure 2 (only for groove type heat collector in figure), heat collector 13 utilizes the radiation energy of the sun to heat oil resistant, water is converted into steam by the heat of recycling high temperature oil in vaporizer 16, in superheater 15, steam superheating is heated up, superheated vapor enters expansion work in steam turbine 20, make turbine rotor rotate also drive electrical generators 5 rotate thus send electric energy.Radiation energy due to the sun be along with season, round the clock, the change of the 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 to increase auxiliary fuel boiler 23 and auxiliary fuel heater 22 in systems in which, can make that Turbo-generator Set is stable, continuous print runs, and meets the adjustable requirement of Turbo-generator Set electromotive power output.Because jumbo energy-storage system and auxiliary fuel steam generator system make the investment of solar energy thermal-power-generating engineering increase considerably, have a strong impact on applying of solar energy thermal-power-generating technology.
Summary of the invention
The object of this invention is to provide Turbo-generator Set and the implementation method of a kind of solar electrical energy generation and thermal power generation compound, can make when there is no energy-storage system that the Turbo-generator Set of solar energy is stable, continuous print runs, and meeting the adjustable requirement of Turbo-generator Set electromotive power output, the investment solving solar energy thermal-power-generating engineering is large, be difficult to the technical problem promoted.
To achieve these goals, the invention provides the Turbo-generator Set of a kind of solar electrical energy generation and thermal power generation compound, comprising:
Thermal power generation system, for: obtain high-temperature steam by fuel, generated electricity by Steam Actuation thermal power steam turbine;
Solar steam power generation system, for: obtain high-temperature steam by solar energy, generated electricity by Steam Actuation solar electrical energy generation steam turbine;
Described solar electrical energy generation steam turbine and described thermal power steam turbine are coaxially arranged, and share a generator, constitute compound Turbo-generator Set;
By the power regulating the admission flow of described thermal power steam turbine to regulate described compound Turbo-generator Set, thus described solar steam power generation system no longer arranges energy-storage system, auxiliary fuel heater and auxiliary fuel boiler.
Preferably, in above-mentioned Turbo-generator Set, the steam that described solar electrical energy generation steam turbine is discharged enters into the vapour condenser of described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser, condensate pump, low-pressure heater, deaerator and water tank.
Preferably, in above-mentioned Turbo-generator Set, also comprise: solar steam power generation system humidity control system, for: when the vapor (steam) temperature of described solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, thus ensures that described solar electrical energy generation steam turbine normally works.
Preferably, in 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 enter described solar electrical energy generation steam turbine, enable described solar electrical energy generation steam turbine obtain good cooling.
In order to better realize above-mentioned purpose, present invention also offers the implementation method of the Turbo-generator Set of a kind of solar electrical energy generation and thermal power generation compound, described Turbo-generator Set comprises:
Thermal power generation system, for: obtain high-temperature steam by fuel, generated electricity by Steam Actuation thermal power steam turbine;
Solar steam power generation system, for: obtain high-temperature steam by solar energy, generated electricity by Steam Actuation solar electrical energy generation steam turbine;
Described implementation method comprises the steps:
Described solar electrical energy generation steam turbine and described thermal power steam turbine are coaxially arranged, shares a generator, constitute compound Turbo-generator Set;
By the power regulating the admission flow of described thermal power steam turbine to regulate described compound Turbo-generator Set, thus make described solar steam power generation system that energy-storage system, auxiliary fuel heater and auxiliary fuel boiler are no longer set.
Preferably, in above-mentioned implementation method, also comprise: the vapour condenser steam that described solar electrical energy generation steam turbine is discharged being entered into described thermal power generation system, thus described firepower electricity turbine generator system and described solar steam power generation system share described vapour condenser, condensate pump, low-pressure heater, deaerator and water tank.
Preferably, in above-mentioned implementation method, also comprise: when the vapor (steam) temperature of described solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, vapor (steam) temperature is regulated, thus ensures that described solar electrical energy generation steam turbine normally works.
Preferably, in above-mentioned implementation method, also comprise: when solar steam power generation system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to enter described solar electrical energy generation steam turbine, enable described solar electrical energy generation steam turbine obtain good cooling.
At least there is following technique effect in the embodiment of the present invention:
1) steam turbine due to solar heat power generation system is coaxial with thermal power generation unit, the power stage of generator is mediated by thermal power generation unit completely, do not need to build jumbo energy-storage system and auxiliary fuel boiler, both can meet the reconciliation requirements of electric power system to generator set.
2) steam that solar electrical energy generation steam turbine 20 is discharged enters into the vapour condenser 6 of described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser 6, condensate pump 7, low-pressure heater 8, deaerator and water tank 9.Solar steam power generation system no longer needs again to build these steam treatment devices, has greatly saved the construction investment of solar steam power generation system.
3) when the vapor (steam) temperature of solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, and steam regulation temperature, makes solar energy steam turbine keep it normally to work.
4) when solar steam power generation system is out of service, the intermediate pressure cylinder steam discharge of thermal power steam turbine can be utilized to enter solar electrical energy generation steam turbine, good cooling can be obtained.
5) in a word, the system that provides of the embodiment of the present invention is provided and builds separately compared with solar steam power generation system, greatly can reduce construction investment, meanwhile, free adjusting can to surf the Net generated output and quality, meet the requirement of dispatching of power netwoks.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing thermal power generation Turbo-generator Set and system;
Fig. 2 is the schematic diagram of existing solar steam generator set and system;
Fig. 3 is that the sun that the embodiment of the present invention provides generates electricity and the Turbo-generator Set of thermal power generation compound and the schematic diagram of system;
Fig. 4 is the flow chart of the implementation method that the embodiment of the present invention provides.
In Fig. 1, Fig. 2, Fig. 3, device numbering is described as follows:
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-deaerator 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 making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with accompanying drawing, specific embodiment is described in detail.
As shown in Figure 3, the Turbo-generator Set of solar electrical energy generation and thermal power generation compound, comprising:
Thermal power generation system, for: obtain high-temperature steam by fuel, generated electricity by Steam Actuation thermal power steam turbine (comprising high-pressure cylinder 2, intermediate pressure cylinder 3 and low pressure (LP) cylinder 4);
Solar steam power generation system, for: obtain high-temperature steam by solar energy, generated electricity by Steam Actuation solar electrical energy generation steam turbine 20;
Described solar electrical energy generation steam turbine 20 is coaxially arranged with described thermal power steam turbine, shares a generator 5;
By the power regulating the admission flow of described thermal power steam turbine to regulate described compound Turbo-generator Set, thus described solar steam power generation system no longer arranges energy-storage system 21, auxiliary fuel heater 22 and auxiliary fuel boiler 23.
Visible, solar electrical energy generation steam turbine 20 is positioned between fired power generating unit turbine low pressure cylinder 4 and generator 5 by the present invention, is combined, defines the Turbo-generator Set of solar electrical energy generation and thermal power generation compound with fired power generating unit steam turbine set.Because the steam turbine of solar power system is coaxial with thermal power generation unit, the power stage of generator is mediated by thermal power generation unit completely, do not need to build jumbo energy-storage system and auxiliary fuel boiler, both can meet the reconciliation requirements of electric power system to generator set.
Wherein, the steam that described solar electrical energy generation steam turbine 20 is discharged enters into the vapour condenser 6 of described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser 6, condensate pump 7, low-pressure heater 8, deaerator and water tank 9.Visible, solar steam power generation system no longer needs again to build these steam treatment devices, has greatly saved the construction investment of solar steam power generation system.
Wherein, also comprise: when the vapor (steam) temperature of described solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, thus ensures that described solar electrical energy generation steam turbine 20 normally works.
Wherein, also comprise: when solar steam power generation system is out of service, the exhaust of thermal power steam turbine intermediate pressure cylinder can be utilized to enter solar electrical energy generation steam turbine, good cooling can be obtained.
Shown in Fig. 3, the steam that solar steam output system produces enters solar electrical energy generation steam turbine 20 expansion work, solar electrical energy generation and thermal power generation common generator 5, vapour condenser 6, condensate pump 7, low-pressure heater 8, deaerator and water tank 9, meanwhile, the exhaust of intermediate pressure cylinder 3 or other levels can also be utilized to draw gas temperature adjustment is carried out to solar energy vapor generation system.When solar irradiance is more weak or disappear completely, solar electrical energy generation steam generating system can be excised, the exhaust of thermal power steam turbine intermediate pressure cylinder or other levels can be utilized to draw gas, enter solar energy steam turbine and it is cooled.Therefore, the system that provides of the embodiment of the present invention is provided and builds separately compared with solar power system, greatly can reduce construction investment, meanwhile, free adjusting can to surf the Net generated output and quality, meet the requirement of dispatching of power netwoks.
In the embodiment of the present invention, described thermal power generation system is reheating embrittlement or non-reheating embrittlement; The thermal-arrest mode of described solar steam power generation system adopts slot type, tower or dish-style.
The embodiment of the present invention additionally provides the implementation method of the compound power-generating Turbo-generator Set of a kind of solar energy and fossil fuel, wherein, described compound power-generating Turbo-generator Set comprises: thermal power generation system, for: obtain high-temperature steam by fuel, generated electricity by Steam Actuation thermal power steam turbine; Solar steam power generation system, for: obtain high-temperature steam by solar energy, generated electricity by Steam Actuation solar electrical energy generation steam turbine; Fig. 4 is the flow chart of the implementation method that the embodiment of the present invention provides, and as shown in Figure 4, described implementation method comprises:
Step 401, coaxially arranges described solar electrical energy generation steam turbine 20 with described thermal power steam turbine, shares a generator 5, constitute compound Turbo-generator Set;
Step 402, by the power regulating the admission flow of described thermal power steam turbine to regulate described compound Turbo-generator Set, thus makes described solar steam power generation system no longer arrange energy-storage system 21, auxiliary fuel heater 22 and auxiliary fuel boiler 23.
Described implementation method can also comprise: the vapour condenser 6 steam that described solar electrical energy generation steam turbine 20 is discharged being entered into described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser 6, condensate pump 7, low-pressure heater 8, deaerator and water tank 9.
Described implementation method can also comprise: when the steam of described solar steam power generation system output sharply changes, and drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, thus ensures that described solar electrical energy generation steam turbine 20 normally works.
Described implementation method can also comprise: when solar steam power generation system is out of service, the intermediate pressure cylinder of thermal power steam turbine can be utilized to be vented and enter solar electrical energy generation steam turbine, can obtain good cooling.
In actual applications, when the fired power generating unit of various initial conditions is built in the area that solar energy resources enriches, all can be designed to the Turbo-generator Set of solar electrical energy generation and thermal power generation compound, namely, on the basis of thermoelectricity Turbo-generator Set, 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 is set up.Generator 5 capacity should be determined through optimizing calculating according to the concrete condition of fired power generating unit steam turbine capacity and the engineering such as the part throttle characteristics of solar power system capacity and unit place electrical network and the operating mode of unit.
This compound electricity generation system can have two kinds of design proposals:
The first scheme: the design rating of former thermal power generation unit does not need to adjust, when solar power system works, unit output does not increase, but reduces the fuel quantity of boiler, namely utilize solar electrical energy generation power to instead of the power of fired power generating unit, save fuel.This scheme will carry out appropriate adjustment according to thermodynamic computing situation to the vapour condenser 6 shared, condensate pump 7, low-pressure heater 8, exerting oneself of deaerator and water tank.
First scheme: in the electrical network that the high crest segment of solar irradiance time and network load matches, on the basis can exerted oneself at fired power generating unit equipment, improve the design rating of the shared devices such as generator 5, vapour condenser 6, condensate pump 7, low-pressure heater 8, deaerator and water tank 9, on the design rating of fired power generating unit, namely superpose the design rating of solar electrical energy generation.
In order to change sharply does not occur the steam parameter ensureing to enter solar electrical energy generation steam turbine, can according to the match condition of 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, direct or indirect adjustment is carried out to the steam parameter in solar power system.
Under the steam of solar power system output can not meet the condition that solar electrical energy generation steam turbine generator normally works, solar power system can be excised.According to the match condition of 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, enter solar electrical energy generation steam turbine, good cooling can be obtained.
As from the foregoing, the embodiment of the present invention has following advantage:
1) steam turbine due to solar heat power generation system is coaxial with thermal power generation unit, the power stage of generator is mediated by thermal power generation unit completely, do not need to build jumbo energy-storage system and auxiliary fuel boiler, both can meet the reconciliation requirements of electric power system to generator set.
2) steam that solar electrical energy generation steam turbine 20 is discharged enters into the vapour condenser 6 of described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser 6, condensate pump 7, low-pressure heater 8, deaerator and water tank 9.Solar steam power generation system no longer needs again to build these steam treatment devices.
3) when the vapor (steam) temperature of solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, thus ensures that described solar electrical energy generation steam turbine normally works.
4) when solar steam power generation system is out of service, the intermediate pressure cylinder of thermal power steam turbine can be utilized to be vented and to enter solar electrical energy generation steam turbine, good cooling can be obtained.
5) in a word, the system that provides of the embodiment of the present invention is provided and builds separately compared with solar power system, greatly can reduce construction investment, meanwhile, free adjusting can to surf the Net generated output and quality, meet the requirement of dispatching of power netwoks.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a Turbo-generator Set for solar electrical energy generation and thermal power generation compound, comprising:
Thermal power generation system, for: obtain high-temperature steam by fuel, generated electricity by Steam Actuation thermal power steam turbine (2,3,4);
Solar steam power generation system, for: obtain high-temperature steam by solar energy, generated electricity by Steam Actuation solar electrical energy generation steam turbine (20);
It is characterized in that,
Described solar electrical energy generation steam turbine (20) and described thermal power steam turbine (2,3,4) are coaxially arranged, and share a generator (5), constitute compound Turbo-generator Set;
By the power regulating the admission flow of described thermal power steam turbine to regulate described compound Turbo-generator Set, thus described solar steam power generation system no longer arranges energy-storage system (21), auxiliary fuel heater (22) and auxiliary fuel boiler (23);
Also comprise:
Solar steam power generation system humidity control system, for: when the vapor (steam) temperature of described solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, thus ensures that described solar electrical energy generation steam turbine (20) normally works.
2. Turbo-generator Set according to claim 1, is characterized in that,
The steam that described solar electrical energy generation steam turbine (20) is discharged enters into the vapour condenser (6) of described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser (6), condensate pump (7), low-pressure heater (8), deaerator and water tank (9).
3. Turbo-generator Set according to claim 1, is characterized in that, also comprises:
When solar steam power generation system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to enter described solar electrical energy generation steam turbine (20), make described solar electrical energy generation steam turbine (20) that good cooling can be obtained.
4. an implementation method for the Turbo-generator Set of solar electrical energy generation and thermal power generation compound, described Turbo-generator Set comprises:
Thermal power generation system, for: obtain high-temperature steam by fuel, generated electricity by Steam Actuation thermal power steam turbine (2,3,4);
Solar steam power generation system, for: obtain high-temperature steam by solar energy, generated electricity by Steam Actuation solar electrical energy generation steam turbine (20);
It is characterized in that, described implementation method comprises the steps:
Described solar electrical energy generation steam turbine (20) and described thermal power steam turbine (2,3,4) are coaxially arranged, shares a generator (5), constitute compound Turbo-generator Set;
By the power regulating the admission flow of described thermal power steam turbine to regulate described compound Turbo-generator Set, thus make described solar steam power generation system that energy-storage system (21), auxiliary fuel heater (22) and auxiliary fuel boiler (23) are no longer set;
Also comprise:
When the vapor (steam) temperature of described solar steam power generation system output sharply changes, drawing gas of described thermal power steam turbine is introduced described solar steam power generation system, vapor (steam) temperature is regulated, thus ensures that described solar electrical energy generation steam turbine (20) normally works.
5. implementation method according to claim 4, is characterized in that, also comprises:
The steam that described solar electrical energy generation steam turbine (20) is discharged is entered into the vapour condenser (6) of described thermal power generation system, thus described thermal power generation system and described solar steam power generation system share described vapour condenser (6), condensate pump (7), low-pressure heater (8), deaerator and water tank (9).
6. implementation method according to claim 4, is characterized in that, also comprises:
When solar steam power generation system is out of service, utilize the steam discharge of thermal power steam turbine intermediate pressure cylinder to enter described solar electrical energy generation steam turbine (20), make described solar electrical energy generation steam turbine (20) that good cooling can be obtained.
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| CN102900478B (en) * | 2012-09-29 | 2014-10-29 | 华北电力大学 | Novel heat supply steam turbine system and regulation method thereof |
| US9200799B2 (en) * | 2013-01-07 | 2015-12-01 | Glasspoint Solar, Inc. | Systems and methods for selectively producing steam from solar collectors and heaters for processes including enhanced oil recovery |
| CN103115348B (en) * | 2013-03-05 | 2014-11-26 | 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 |
| CN108894546B (en) * | 2018-07-11 | 2020-10-02 | 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 incineration power generation integrated main workshop layout structure |
| CN109138541B (en) * | 2018-07-11 | 2020-10-02 | 中国光大绿色环保有限公司 | Biomass and domestic garbage incineration power generation integrated plant area arrangement structure |
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| US7640746B2 (en) * | 2005-05-27 | 2010-01-05 | Markon Technologies, LLC | Method and system integrating solar heat into a regenerative rankine steam cycle |
| US20080127647A1 (en) * | 2006-09-15 | 2008-06-05 | Skyfuel, Inc. | Solar-Generated Steam Retrofit for Supplementing Natural-Gas Combustion at Combined Cycle Power Plants |
| US8544273B2 (en) * | 2008-09-17 | 2013-10-01 | Siemens Concentrated Solar Power Ltd. | Solar thermal power plant |
| EP2187051A1 (en) * | 2008-11-12 | 2010-05-19 | Siemens Aktiengesellschaft | Method and device for intermediate heating in a solar thermal power plant with indirect steam |
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