CN203081666U - Combined heating and power system of heat source complementary Stirling engine - Google Patents
Combined heating and power system of heat source complementary Stirling engine Download PDFInfo
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- CN203081666U CN203081666U CN 201220565184 CN201220565184U CN203081666U CN 203081666 U CN203081666 U CN 203081666U CN 201220565184 CN201220565184 CN 201220565184 CN 201220565184 U CN201220565184 U CN 201220565184U CN 203081666 U CN203081666 U CN 203081666U
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- thermal source
- stirling engine
- water tank
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- heater
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Abstract
The utility model discloses a combined heating and power system of a heat source complementary Stirling engine. A disc-type secondary reflector is used for focusing solar light onto a hybrid heat source heater; the hybrid heat source heater is connected with a heat end of the Stirling engine, and an output end of the Stirling engine is connected with a generator; a cold water tank, a water pump, one path of a cooler of the Stirling engine and a smoke gas side heat exchanger in the hybrid heat source hater are sequentially connected with a hot water tank; the other path of the cooler of the Stirling engine is directly connected with the hot water tank; a fuel compensating device and an electric control valve are sequentially connected with a heat source heater; and the output end of the Stirling engine, a data acquiring and detecting device, an auxiliary heat source controller and the electric control valve are sequentially connected. According to the combined heating and power system, problems of instable electric output, poor durability and difficult grid connection of the conventional solar generating system; meanwhile, the system realizes combined heating and power; and competitiveness of a solar heat generating grid and entire economic benefit of the system are greatly improved.
Description
Technical field
The utility model relates to a kind of thermal source complementary type Stirling engine cogeneration system, the Stirling engine cogeneration system of particularly a kind of solar energy---auxiliary thermal source complementary drive.
Background technique
Solar energy is as the abundantest renewable and clean energy resource of reserves on the earth, and under the background of present global energy crisis, renewable energy sourcess such as exploitation solar energy replace traditional fossil energy to become the inexorable trend of human development.But because low, the poor stability of solar energy density, and be subjected to geographical distribution, seasonal variations, influence such as day alternates with night, cause its power supply very unstable.In case this renewable energy sources large-scale development also is incorporated into the power networks, unsettled power supply is to threaten greatly and burden to the safe and stable operation of domestic big electrical network.The renewable energy sources difficult problem of generating electricity by way of merging two or more grid systems is limiting the application and the popularization of solar energy generation technology for a long time.According to National Energy Board's statistics, China in 2011 photovoltaic installation is 3,000,000 kilowatts, and the electric motor power of being incorporated into the power networks is 2,140,000 kilowatts, and the rate that is incorporated into the power networks only is 71%; And in these solar power stations that can be incorporated into the power networks, it only is 1500 hours (62.5 days) that annual mean can utilize hour number, only is 1/4 of thermoelectricity.In actual moving process, phenomenon takes place often because solar power station power supply instability causes electrical network " to abandon light ".
The solar power generation grid-connecting technology is still a jejune technology in China.National Energy Board has announced " 12 " object of planning of Chinese renewable energy sources development in December, 2011, and by 2015, Chinese solar electrical energy generation will reach 1,500 ten thousand kilowatts, annual electricity generating capacity 20000000000 kilowatt hours.So big solar grid-connected scale is to threaten greatly and burden to the safe operation and the scheduling of domestic big electrical network, make solar energy generation technology can access extensive utilization, really accomplish to make full use of new energy, it is especially important that the research and development of its interconnection technology just seems.
The solar power system major part that is incorporated into the power networks of China all adopts solar photovoltaic technology at present.The solar power system that is incorporated into the power networks is made up of photovoltaic module, combining inverter, measuring apparatus and electrical distribution system.Photovoltaic generation is instant type, and photoelectricity transforms and finishes in the short time at the utmost point, and this makes the electric power output of photovoltaic generation influenced by illumination variation, and the electric power output fluctuation is violent; And the photothermal power generation mode is because the thermal capacitance of working medium and the effect of regenerative system, and its output power is subjected to the influence of illumination variation not have photovoltaic direct, and the quality of electric power output is good than photovoltaic.
The solar energy thermal-power-generating technology be field of solar energy commercialization degree the highest, apply one of the most general technology.The solar heat power generation system of Success in Experiment mainly contains three kinds at present: slot type, tower and dish formula.Wherein the hot generation mode of disc type solar energy has optically focused than high, the efficiency height, and mechanism's compactness, easy for installation, but Distributed Application, also the characteristics of centralized power generation on a large scale more and more have been subjected to public attention.
The core of disc type solar energy heat generating system---Stirling engine is the reciprocating engine of a kind of outside heat supply (or burning), and it does working medium with gas, carries out work by enclosed backheat circuit mode.Stirling engine mainly is made up of outside heat supply (or burning) system, work cycle system (heat energy-mechanical energy conversion system), legacy system (mechanical energy output system), auxiliary system and supervisory system etc.Its working principle circulates based on Stirling, and entire work process comprises isothermal compression; Absorb heat Deng body; Isothermal expansion; Deng 4 processes of appearance cooling.
Summary of the invention
The purpose of this utility model is bigger at the output fluctuation of present domestic solar power system electric power, and the problem of large-sized solar electric station grid connection difficulty provides a kind of thermal source complementary type Stirling engine cogeneration system.
Thermal source complementary type Stirling engine cogeneration system comprises hot water tank, dish formula secondary reflection mirror, mixes thermal source heater, Stirling engine, water pump, cold-water tank, generator, data capture and detector, auxiliary thermal source controller, electrically-controlled valve and fuel compensation device; Dish formula secondary reflection mirror arrives solar light focusing and mixes the thermal source heater, mixing the thermal source heater links to each other with the hot junction of Stirling engine, the output terminal of Stirling engine links to each other with generator, cold-water tank, water pump, the cooler one tunnel of Stirling engine, the fume side heat exchanger that mixes in the thermal source heater links to each other in turn with hot water tank, another road of Stirling engine cooler directly links to each other with hot water tank, fuel compensation device, electrically-controlled valve links to each other the output terminal of Stirling engine in turn with mixing thermal source heater, data capture and detector, the auxiliary thermal source controller, electrically-controlled valve links to each other in turn.
Described mixing thermal source heater comprises solar energy receive window, back-end ductwork, fume side heat exchanger, heating chamber, auxiliary thermal source inlet and air inlet; The fume side heat exchanger is placed in the back-end ductwork outlet port, back-end ductwork is installed in heating chamber exhaust outlet place, and the heating chamber lateral opening is used to install the solar energy receive window, air inlet and auxiliary thermal source inlet are installed in the heating chamber bottom, and the auxiliary thermal source inlet can feed the auxiliary thermal source of various ways; The back-end ductwork that mixes thermal source heater model is square, and 90 ° of bendings, and the fume side heat exchanger is a tubular heat exchanger, and the heating chamber bottom has three row's apertures, and it is 50～60mm window that leading flank has diameter, and settles silica glass.
Described data capture and detector are infrared rays revolution speed sensing detector and BH175FVI light intensity sensor.Described auxiliary thermal source controller is the ATmega128 single-chip microcomputer.
The utility model compared with prior art has following beneficial effect:
(1), relative and traditional solar photovoltaic generation system and bigger defective of photothermal power generation systematic electricity output fluctuation, the design is by adding auxiliary thermal source, and design mixes thermal source heater and corresponding auxiliary thermal source control system, realized that solar energy and other multiple thermal source complementaries drive the Stirling engine generating, improve the stability and the persistency of system's output power, helped being incorporated into the power networks of solar energy thermal-power-generating;
(2), add bootstrap system, waste heat, the hybrid heater smoke discharging residual heat of Stirling engine cold junction used, realized the cascade utilization of the cogeneration and the energy, improved the comprehensive efficiency of system greatly.
Description of drawings
Fig. 1 is a thermal source complementary type Stirling engine cogeneration system structural representation;
Fig. 2 is a mensuration performance curve of the present utility model;
Fig. 3 is the utility model motor output parameter bar chart under the different heat sources heating state;
Fig. 4 is a hybrid heater structural representation of the present utility model;
Fig. 5 (a) is a Stirling engine of the present utility model hot junction structural representation;
Fig. 5 (b) is a Stirling engine of the present utility model hot junction STRUCTURE DECOMPOSITION schematic representation;
Fig. 6 is an auxiliary thermal source controlling schemes block diagram of the present utility model;
Fig. 7 is control unit interface figure of the present utility model;
Fig. 8 is infrared rotating speed testing module of the present utility model and illumination intensity testing module circuit diagram;
Fig. 9 is an engine performance curve change curve (0.03MPa) before and after bootstrap system of the present utility model is opened;
Among the figure, hot water tank 1, dish formula secondary reflection mirror 2, mixing thermal source heater 3, Stirling engine 4, water pump 5, cold-water tank 6, generator 7, data capture and detector 8, auxiliary thermal source controller 9, electrically-controlled valve 10, fuel compensation device 11, solar energy receive window 12, back-end ductwork 13, fume side heat exchanger 14, heating chamber 15, auxiliary thermal source inlet 16, air inlet 17.
Embodiment
The contrast accompanying drawing is described further the utility model.
As shown in Figure 1, thermal source complementary type Stirling engine cogeneration system comprises hot water tank 1, dish formula secondary reflection mirror 2, mixes thermal source heater 3, Stirling engine 4, water pump 5, cold-water tank 6, generator 7, data capture and detector 8, auxiliary thermal source controller 9, electrically-controlled valve 10 and fuel compensation device 11; Dish formula secondary reflection mirror 2 arrives solar light focusing and mixes thermal source heater 3, mixing thermal source heater 3 links to each other with the hot junction of Stirling engine 4, the output terminal of Stirling engine 4 links to each other with generator 7, cold-water tank 6, water pump 5, the cooler one tunnel of Stirling engine 4, the fume side heat exchanger that mixes in the thermal source heater 3 links to each other in turn with hot water tank 1, another road of Stirling engine 4 coolers directly links to each other with hot water tank 1, fuel compensation device 11, electrically-controlled valve 10 links to each other the output terminal of Stirling engine 4 in turn with mixing thermal source heater 3, data capture and detector 8, auxiliary thermal source controller 9, electrically-controlled valve 10 links to each other in turn.
As shown in Figure 4, described mixing thermal source heater 3 comprises solar energy receive window 12, back-end ductwork 13, fume side heat exchanger 14, heating chamber 15, auxiliary thermal source inlet 16 and air inlet 17; Fume side heat exchanger 14 is placed in back-end ductwork 13 outlet ports, back-end ductwork 13 is installed in heating chamber 15 exhaust outlet places, heating chamber 15 lateral openings, be used to install solar energy receive window 12, air inlet 17 and auxiliary thermal source inlet 16 are installed in the heating chamber bottom, and auxiliary thermal source inlet 16 can feed the auxiliary thermal source of various ways; The back-end ductwork that mixes thermal source heater model is square, and 90 ° of bendings, and fume side heat exchanger 14 is a tubular heat exchanger, and heating chamber 15 bottoms have three row's apertures, and it is 50～60mm window that leading flank has diameter, and settles silica glass.
Described data capture and detector 8 are infrared rays revolution speed sensing detector and BH175FVI light intensity sensor.Described auxiliary thermal source controller 10 is ATmega128 single-chip microcomputers.
Thermal source complementary type Stirling engine combined heat and power method adopts solar energy as main heat source, sunlight is by dish formula secondary reflection mirror 2 optically focused, the optically focused ratio is 200～250, see through the solar energy receive window 12 of hybrid heater 3, project in the heating chamber 15, the hot cylinder of Stirling engine 4 is heated; The auxiliary fuel of the various ways electrically-controlled valve 10 of flowing through in the fuel compensation device 11, spray into heating chamber 15 from the auxiliary thermal source inlet 16 of hybrid heater 3 foots, air enters heating chamber 15 by air inlet 17, auxiliary fuel and solar energy heat the hot cylinder of Stirling engine 4 jointly, and smoke evacuation is discharged by back-end ductwork 13; Working medium in the Stirling engine 4 is carried out the Stirling circulation, and demonstrating model working medium is air, and hot junction working medium temperature is 300～340 ℃, cold junction working medium temperature is 50～60 ℃, average circulating pressure is 0.1Mpa, drives the external output kinetic energy of flywheel at last, drives generator 7 generatings; The control mode of " flywheel speed feedback-illumination intensity feedforward " is adopted in the supply of auxiliary thermal source, and the BH175FVI light intensity sensor can detect intensity variations when solar radiation is fluctuateed, be converted into electrical signal; Infrared rays revolution speed sensing detector is installed on the flywheel-bracket, 10mm * 3mm is set on flywheel detects white line, realize the flywheel tachometric survey by white line infrared signal reflection sense, light barrier is set around infrared tube simultaneously, the assurance system is the energy proper functioning under high light; Rotating speed and light intensity signal enter auxiliary thermal source controller 9 by sensor, auxiliary thermal source controller 9 is according to the variation of testing signal, the output control command, the aperture of control electrically-controlled valve 10, the fuel duty of fuel metering supplementary device 11, thereby there is stable heat input in the hot junction that guarantees Stirling engine 4, and the working medium temperature is constant relatively, guarantees the stable of system's output power; In the UTILIZATION OF VESIDUAL HEAT IN pipeline, cooling water in the cold-water tank 6 is through water pump 5 pressurizations, flow through respectively Stirling engine 4 cooler and mix fume side heat exchanger 14 in the thermal source heater 3, two-part waste heat is reclaimed, hot water converges in the hot water tank 1, finally obtain 40～50 ℃ hot water, the smoke evacuation flow hour, the hot water of cooler outlet can directly import in the hot water tank 1 by bypass.
Claims (4)
1. a thermal source complementary type Stirling engine cogeneration system is characterized in that system comprises hot water tank (1), dish formula secondary reflection mirror (2), mixes thermal source heater (3), Stirling engine (4), water pump (5), cold-water tank (6), generator (7), data capture and detector (8), auxiliary thermal source controller (9), electrically-controlled valve (10) and fuel compensation device (11); Dish formula secondary reflection mirror (2) arrives solar light focusing and mixes thermal source heater (3), mixing thermal source heater (3) links to each other with the hot junction of Stirling engine (4), the output terminal of Stirling engine (4) links to each other with generator (7), cold-water tank (6), water pump (5), the cooler one tunnel of Stirling engine (4), the fume side heat exchanger that mixes in the thermal source heater (3) links to each other in turn with hot water tank (1), another road of Stirling engine (4) cooler directly links to each other with hot water tank (1), fuel compensation device (11), electrically-controlled valve (10) links to each other the output terminal of Stirling engine (4) in turn with mixing thermal source heater (3), data capture and detector (8), auxiliary thermal source controller (9), electrically-controlled valve (10) links to each other in turn.
2. a kind of thermal source complementary type Stirling engine cogeneration system according to claim 1 is characterized in that described mixing thermal source heater (3) comprises solar energy receive window (12), back-end ductwork (13), fume side heat exchanger (14), heating chamber (15), auxiliary thermal source inlet (16) and air inlet (17); Fume side heat exchanger (14) is placed in back-end ductwork (13) outlet port, back-end ductwork (13) is installed in heating chamber (15) exhaust outlet place, heating chamber (15) lateral opening, be used to install solar energy receive window (12), air inlet (17) and auxiliary thermal source inlet (16) are installed in the heating chamber bottom, and auxiliary thermal source inlet (16) can feed the auxiliary thermal source of various ways; The back-end ductwork that mixes thermal source heater model is square, and 90 ° of bendings, and fume side heat exchanger (14) is a tubular heat exchanger, and heating chamber (15) bottom has three row's apertures, and it is 50～60mm window that leading flank has diameter, and settles silica glass.
3. a kind of thermal source complementary type Stirling engine cogeneration system according to claim 1 is characterized in that described data capture and detector (8) are infrared rays revolution speed sensing detector and BH175FVI light intensity sensor.
4. a kind of thermal source complementary type Stirling engine cogeneration system according to claim 1 is characterized in that described auxiliary thermal source controller (10) is the ATmega128 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565184 CN203081666U (en) | 2012-10-30 | 2012-10-30 | Combined heating and power system of heat source complementary Stirling engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565184 CN203081666U (en) | 2012-10-30 | 2012-10-30 | Combined heating and power system of heat source complementary Stirling engine |
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| Publication Number | Publication Date |
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| CN203081666U true CN203081666U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220565184 Withdrawn - After Issue CN203081666U (en) | 2012-10-30 | 2012-10-30 | Combined heating and power system of heat source complementary Stirling engine |
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| CN (1) | CN203081666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878037A (en) * | 2012-10-30 | 2013-01-16 | 浙江大学 | Combined heating and power system of heat source complementary Stirling engine and method of system |
| CN106894916A (en) * | 2017-01-18 | 2017-06-27 | 昆明理工大学 | One kind recycles TRT based on Embedded Waste Heat Recovery |
-
2012
- 2012-10-30 CN CN 201220565184 patent/CN203081666U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878037A (en) * | 2012-10-30 | 2013-01-16 | 浙江大学 | Combined heating and power system of heat source complementary Stirling engine and method of system |
| CN102878037B (en) * | 2012-10-30 | 2014-09-10 | 浙江大学 | Combined heating and power system of heat source complementary Stirling engine and method of system |
| CN106894916A (en) * | 2017-01-18 | 2017-06-27 | 昆明理工大学 | One kind recycles TRT based on Embedded Waste Heat Recovery |
| CN106894916B (en) * | 2017-01-18 | 2018-08-10 | 昆明理工大学 | One kind recycling power generator based on Embedded Waste Heat Recovery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130724 Effective date of abandoning: 20140910 |
|
| RGAV | Abandon patent right to avoid regrant |