CN203271840U - Solar ORC electricity generation system - Google Patents
Solar ORC electricity generation system Download PDFInfo
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- CN203271840U CN203271840U CN2013202917406U CN201320291740U CN203271840U CN 203271840 U CN203271840 U CN 203271840U CN 2013202917406 U CN2013202917406 U CN 2013202917406U CN 201320291740 U CN201320291740 U CN 201320291740U CN 203271840 U CN203271840 U CN 203271840U
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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
- Y02E10/44—Heat exchange systems
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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
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Abstract
The utility model discloses a solar ORC electricity generation system which is capable of utilizing solar energy for power generation, and is high in heat utilization rate. The solar ORC electricity generation system mainly comprises a heat exchanger connected with a solar heat source, a power output device, an electricity generator connected with the power output device, a circulation pump and a condenser, wherein the solar heat source comprises a solar heat collection panel, an oil storage tank, a conduction oil circulation pump. The solar ORC electricity generation system further comprises a heat regenerator, wherein the heat regenerator is used for carrying out heat exchange between an organic working medium discharged by the power output device and an organic working medium discharged by an organic working medium circulation pump to fully utilize the waste heat of the organic working medium discharged by the power output device. The solar ORC electricity generation system is used for generating electricity, so that the heat is effectively used, energy is saved, and the cost of system equipment is lowered.
Description
Technical field
The utility model relates to a kind of power generation system, relates in particular to a kind of solar energy ORC power generation system.
Background technique
Namely organic Rankine circulation of ORC, the power generation system of utilizing this art designs to become is the ORC power generation system.At present, existing ORC power generation system generally comprises two heat exchangers, power take-off, the generator that is connected with power take-off and a recycle pump.For example " refrigeration journal " February in 2012, the 33rd the 1st phase of volume disclosed an above-mentioned ORC power generation system.And China Patent Publication No. CN1950591A also discloses a similar ORC power generation system.Each device in above-mentioned this power generation system is connected and forms a circulation loop.Organic media circulates in this loop.One of them heat exchanger can be connected with solar source and carry out heat exchange, and organic working medium is heated into steam condition, and the organic media of steam condition enters the power take-off acting, and power take-off drives the generator generating.Organic working medium then enters another heat exchanger and carries out condensation formation liquid, and this heat exchanger is condenser namely.The organic working medium that is cooled forms the overcooled liquid state under the pressure-acting of recycle pump, then enter with heat exchanger that thermal source is connected in.Loop generating by above-mentioned.Existing this power generation system has the following disadvantages: 1, organic working medium is gone back reserve part heat energy after through the power take-off acting, and these heat energy are slatterned by the condenser heat release, and system effectiveness is very low.2, system is through after using for a long time, and inner organic working medium generation loss can't in time replenish.3, arranging not succinctly rationally of existing solar source, solar energy utilization ratio is low.
Solar energy is primary energy, is also desirable renewable energy sources.Although aboundresources both can freely use, also need not transportation, environmentally safe, because energy density is low, heat source temperature is not high, and grade is low.
The utilize technology of solar energy in generating mainly contains 2 kinds at present: solar energy generating, solar energy thermal-power-generating.
The solar energy generating is solar energy directly to be transformed into a kind of generation mode of electric energy.It comprises photovoltaic generation, photochemistry Generate, Generation, Generator induction generating and four kinds of forms of photo-biological generating, in the photochemistry generating, electrochemistry photovoltaic cell, photoelectrolytic cell and photocatalysis battery is arranged.
Solar energy thermal-power-generating is first to convert solar energy into heat energy, then heat energy is changed into electric energy, and it has two kinds of transform modes.A kind of is that solar thermal energy is directly changed into electric energy, as the thermo-electric generation of semiconductor or metallic material, and the thermoelectron in vacuum device and the generating of thermoelectricity ion, the alkali metal thermo-electric conversion, and magnetohydrodynamic generator etc.Another kind of mode is that solar thermal energy is driven the generator generating by heat engine (as steam turbine).Wherein, to drive generator generating by heat engine be to drive steam turbine power generation by converting solar energy into after heat energy is heated into steam with water to solar energy.This discharge mode has the following disadvantages:
(1) adopt conventional water vapor Rankine cycle, steam gasification latent heat ratio is large, and whole system will have very most of by condenser heat release waste from the caloric receptivity of solar energy, and system effectiveness is very low;
(2) with water vapor during as cycle fluid, as wet fluid, heat exchanger must be designed with enough superheater heat exchanger surfaces, guarantees that water vapor has enough degrees of superheat, makes the steam quality after acting reach the steam turbine last stage requirement;
(3) because heat source temperature is not high, heat exchanger can not produce very high vapor tension and acting steam specific volume is large, directly affects the size of steam turbine, causes equipment manufacturing cost to raise.
The model utility content
The technical problem that the utility model solves is to provide a kind of high solar energy ORC power generation system of heat utilization rate that can utilize solar electrical energy generation.
the technological scheme that its technical problem that solves the utility model adopts is: solar energy ORC power generation system, comprise the heat exchanger that is connected with thermal source, power take-off, the generator that is connected with the clutch end of power take-off, the organic working medium recycle pump, condenser, described heat exchanger comprises the thermal source entrance, the thermal source outlet, heat exchanger organic working medium entrance and the outlet of heat exchanger organic working medium, power take-off comprises output unit organic working medium entrance and the outlet of output unit organic working medium, the outlet of heat exchanger organic working medium is connected with output unit organic working medium entrance, condenser comprises condenser organic working medium entrance and the outlet of condenser organic working medium, described thermal source comprises solar heat-collection plate, be provided with oil duct in described solar heat-collection plate, the channel outlet of oil duct is connected with the thermal source entrance of heat exchanger, the feeder connection of oil duct is connected with the thermal source outlet of heat exchanger by heat conduction oil circulating pump,
also comprise regenerator, be provided with the first heat exchange road between the outlet of the first organic working medium entrance of regenerator and the first organic working medium, be provided with the second heat exchange road between the outlet of the second organic working medium entrance of regenerator and the second organic working medium, the first organic working medium entrance of regenerator is connected with the outlet of output unit organic working medium, the first organic working medium outlet of regenerator is connected with condenser organic working medium entrance, the outlet of condenser organic working medium is connected with the second organic working medium entrance of regenerator by the organic working medium recycle pump, the second organic working medium outlet of regenerator is connected with heat exchanger organic working medium entrance.
Above-mentioned power generation system can improve the utilization ratio of solar energy, and by regenerator is set, the residue heat energy of the organic working medium that the device that can output power is discharged takes full advantage of, and utilizes this part heat energy to heat the supercooled liquid organic working medium.
Be further: also be connected with liquid container between described condenser and organic working medium recycle pump, be provided with the organic working medium supplementary device on described liquid container.
Be further: be provided with oil storage tank between described heat conduction oil circulating pump and heat exchanger.
Be further: described power take-off is the ORC turbine.
Be further: be provided with on described ORC turbine be used to the sealing configuration that prevents that organic working medium from leaking.
The beneficial effects of the utility model are:
1, can utilize solar electrical energy generation, and heat utilization rate is high.The thermal efficiency of cycle of whole system is high.Simultaneously, when adopting organic working medium to be circulatory mediator, system need not arrange the equipment such as medicine adding device, deaerating plant, drainage, can effectively reduce equipment investment.
2, can play the effect of buffering on the one hand by liquid container, guarantee that organic working medium continues circulation smoothly in system, on the other hand also can be in time replenishing organic working medium in system.
3, can play the effect of buffering on the one hand by oil storage tank, guarantee that conduction oil continues circulation smoothly, thereby guarantee that the temperature of organic working medium in heat exchanger fluctuation can not occur, be conducive to protect organic working medium not change because of temperature fluctuation generation physical property; Can in time replenish conduction oil on the other hand.And, but the amount by conduction oil in the oil storage tank control system, and then can come the amount of conduction oil in timely adjust system to guarantee the temperature stabilization of conduction oil according to the temperature of solar heat-collection plate, thus can guarantee the temperature stabilization of organic working medium, fluctuation can not appear.
4, by sealing configuration is set, can carry out excellent sealing to the ORC turbine, prevent the organic working medium leakage.
Description of drawings
Fig. 1 is the schematic diagram of solar energy ORC power generation system of the present utility model;
be labeled as in figure: heat exchanger 1, thermal source entrance 11, heat exchanger organic working medium outlet 12, thermal source outlet 13, heat exchanger organic working medium entrance 14, power take-off 2, output unit organic working medium entrance 21, clutch end 22, output unit organic working medium outlet 23, generator 3, regenerator 4, the first organic working medium entrance 41, the first organic working medium outlet 42, the second organic working medium entrance 44, the second organic working medium outlet 43, condenser 5, condenser organic working medium entrance 51, condenser organic working medium outlet 52, liquid container 6, organic working medium recycle pump 7, solar heat-collection plate 8, channel outlet 81, feeder connection 82, oil storage tank 9, heat conduction oil circulating pump 100.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
as shown in Figure 1, solar energy ORC power generation system of the present utility model, comprise the heat exchanger 1 that is connected with thermal source, power take-off 2, the generator 3 that is connected with the clutch end 22 of power take-off 2, organic working medium recycle pump 7, condenser 5, described heat exchanger 1 comprises thermal source entrance 11, thermal source outlet 13, heat exchanger organic working medium entrance 14 and heat exchanger organic working medium outlet 12, power take-off 2 comprises output unit organic working medium entrance 21 and output unit organic working medium outlet 23, heat exchanger organic working medium outlet 12 is connected with output unit organic working medium entrance 21, condenser 5 comprises condenser organic working medium entrance 51 and condenser organic working medium outlet 52, described thermal source comprises solar heat-collection plate 8, be provided with oil duct in described solar heat-collection plate 8, the channel outlet 81 of oil duct is connected with the thermal source entrance 11 of heat exchanger 1, the feeder connection 82 of oil duct is connected with the thermal source outlet 13 of heat exchanger 1 by heat conduction oil circulating pump 100, also comprise regenerator 4, be provided with the first heat exchange road between the first organic working medium entrance 41 of regenerator 4 and the first organic working medium outlet 42, be provided with the second heat exchange road between the second organic working medium entrance 44 of regenerator 4 and the second organic working medium outlet 43, the first organic working medium entrance 41 of regenerator 4 is connected with output unit organic working medium outlet 23, the first organic working medium outlet 42 of regenerator 4 is connected with condenser organic working medium entrance 51, the outlet 52 of condenser organic working medium is connected with the second organic working medium entrance 44 of regenerator 4 by organic working medium recycle pump 7, the second organic working medium outlet 43 of regenerator is connected with heat exchanger organic working medium entrance 14.Above-mentioned condenser can adopt the types of cooling such as air cooling.Above-mentioned regenerator 4 is also a kind of heat exchanger, and its principle is identical with heat exchanger, is used for exactly the heat of the organic working medium in the heat of the organic working medium in the first heat exchange road and the second heat exchange road is exchanged.The flow direction of conduction oil is opposite with the flow direction of organic working medium, and this form is called countercurrent heat-transfer, conducts heat otherwise be called following current.Countercurrent heat-transfer is higher than following current heat transfer efficiency, can effectively reduce the heat exchanger heat exchange area, reduces the device fabrication cost.Therefore be preferably countercurrent heat-transfer.
During use, first pass through solar heat-collection plate 8 with the heat-conducting oil heating in oil duct, conduction oil after heating enters in heat exchanger, then by the conduction oil that enters in heat exchanger 1, organic working medium in system is heated into gaseous state, conduction oil flows out from heat exchanger 1 and enters in the oil duct of solar heat-collection plate 8 by heat conduction oil circulating pump 100; And above-mentioned gaseous state organic working medium impels power take-off 2 actings to drive generator 3 generatings after entering power take-off 2, the organic working medium that power take-off 2 is discharged enters condenser 5 through regenerator 4 and is cooled to liquid state, liquid organic working medium forms the supercooled liquid organic working medium through 7 pressurizations of organic working medium recycle pump, the supercooled liquid organic working medium enters the heat of the gaseous state organic working medium in the first heat exchange road that absorbs regenerator 4 behind the second heat exchange road of regenerator 4, then enters in heat exchanger.Compared with prior art, said system can take full advantage of the heat energy of solar energy, and the thermal efficiency of cycle of whole system is higher.This point can be as seen from Table 1.
Table 1, take 120 ℃ of certain engineering collecting plate temperature as example:
| ? | Unit | Prior art | System of the present utility model | |
| Heat source temperature | ℃ | 120 | 120 | |
| Cycle fluid | ? | Water | Pentane | |
| Fluid properties | ? | Wet fluid | The master stream body | |
| Critical pressure | MPa | 22.09 | 3.37 | |
| Critical temperature | ℃ | 374 | 196 | |
| | ℃ | 100 | 36.1 | |
| Main steam temperature | ℃ | 100 | 100 | |
| Main steam pressure | MPa | 0.005 | 1.3 | |
| Condenser working pressure | MPa | -0.093 | 0.1 | |
| Thermal efficiency of cycle | % | 7 | 13 |
Because organic working medium can be lossy in system, in order to keep the normal circulation of organic working medium in system, need in time to replenish organic working medium in system.As shown in Figure 1, on the basis of the above, also be connected with liquid container 6 between described condenser 5 and organic working medium recycle pump 7, be provided with the organic working medium supplementary device on described liquid container.Above-mentioned organic working medium supplementary device can be a valve, or is one and is with valvular straight tube etc.When needs during to liquid container 6 interior additional organic working medium, but Open valve to the interior additional organic working medium of liquid container 6, replenishes complete rear throttle down and gets final product.Certain above-mentioned organic working medium supplementary device can also comprise a liquid level detector, after the liquid level in liquid container 6 is lower than the standard liquid level, liquid level detector is transferred to control system with signal, and control system is by Open valve, and by transport tube to the interior conveying organic working medium of liquid container 6.
In like manner, loss in use also can occur in conduction oil, and simultaneously, the temperature fluctuation of the organic working medium in the lasting uniformity heat exchanger that conduction oil flows has a direct impact, the temperature fluctuation of organic working medium can affect the physical property of organic working medium again, affects the normal operation of organic working medium.Based on above-mentioned thinking, be provided with oil storage tank 9 between described heat conduction oil circulating pump 100 and heat exchanger 1.On oil storage tank 9, polytype oil-inlet mechanism can be set.For example can be a valve, can be oil inlet pipe and valve, can be with the oil inlet pipe of liquid level detector and valve etc.By oil storage tank 9, can play on the one hand the effect of buffering, guarantee that conduction oil continues circulation smoothly, thereby guarantee that the temperature of organic working medium in heat exchanger fluctuation can not occur, be conducive to protect organic working medium not change because of temperature fluctuation generation physical property; Can in time replenish conduction oil on the other hand.
Above-mentioned power take-off 2 can be a decompressor, is preferably: described power take-off 2 is the ORC turbine.When power take-off 2 is the ORC turbine, leak in order to prevent its inner organic working medium, corresponding sealing configuration can be set on the ORC turbine.The sealing structure can comprise medium-tight, mechanical seal or unite use with two kinds.Medium-tight makes and fills sealing medium in sealing configuration namely by corresponding sealing configuration is set, and the pressure of sealing medium can prevent the organic working medium leakage like this greater than the pressure of the organic working medium of gaseous state.Mechanical seal is by a pair of or several the end face of making relative sliding perpendicular to axle is fitted and is equipped with auxiliary seal and reaches the gland seal device of Drain Resistance in the lower maintenance of elastic force (or magnetic force) effect of hydrodynamic pressure and compensation mechanism.Above-mentioned mechanical seal and medium-tight are two kinds of common sealing means.Preferably both are applied in simultaneously on the ORC turbine and use as sealing configuration, sealing effect will be far longer than single effect of planting sealing.For example can medium-tight be set in the periphery of mechanical seal structure.
On the basis of the above, in order to prevent the leakage of intrasystem organic working medium, system is in operation process, and the pressure of intrasystem organic working medium is more than or equal to system's external pressure.Namely make the pressure of organic working medium more than or equal to the pressure of external environment condition, the outer gas of anti-locking system enters the physical property of destroying organic working medium in system.Concrete, can select according to system the organic working medium of suitable boiling point, the pressure of the interior organic working medium of feasible system is more than or equal to system's external pressure like this.Such measure is the most favourable for condenser, can guarantee that condenser moves under normal pressure or micro positive pressure condition, reduces the condenser cost of investment.
Claims (5)
1. solar energy ORC power generation system, comprise the heat exchanger (1) that is connected with thermal source, power take-off (2), the generator (3) that is connected with the clutch end (22) of power take-off (2), organic working medium recycle pump (7), condenser (5), described heat exchanger (1) comprises thermal source entrance (11), thermal source outlet (13), heat exchanger organic working medium entrance (14) and heat exchanger organic working medium outlet (12), power take-off (2) comprises output unit organic working medium entrance (21) and output unit organic working medium outlet (23), heat exchanger organic working medium outlet (12) is connected with output unit organic working medium entrance (21), condenser (5) comprises condenser organic working medium entrance (51) and condenser organic working medium outlet (52), it is characterized in that:
Described thermal source comprises solar heat-collection plate (8), described solar heat-collection plate is provided with oil duct in (8), the channel outlet of oil duct (81) is connected with the thermal source entrance (11) of heat exchanger (1), and the feeder connection of oil duct (82) is connected with the thermal source outlet (13) of heat exchanger (1) by heat conduction oil circulating pump (100);
also comprise regenerator (4), be provided with the first heat exchange road between the first organic working medium entrance (41) of regenerator (4) and the first organic working medium outlet (42), be provided with the second heat exchange road between the second organic working medium entrance (44) of regenerator (4) and the second organic working medium outlet (43), the first organic working medium entrance (41) of regenerator (4) is connected with output unit organic working medium outlet (23), the first organic working medium outlet (42) of regenerator (4) is connected with condenser organic working medium entrance (51), condenser organic working medium outlet (52) is connected with the second organic working medium entrance (44) of regenerator (4) by organic working medium recycle pump (7), the second organic working medium outlet (43) of regenerator is connected with heat exchanger organic working medium entrance (14).
2. solar energy ORC power generation system as claimed in claim 1, is characterized in that: also be connected with liquid container (6) between described condenser (5) and organic working medium recycle pump (7), be provided with the organic working medium supplementary device on described liquid container.
3. solar energy ORC power generation system as claimed in claim 1, is characterized in that: be provided with oil storage tank (9) between described heat conduction oil circulating pump (100) and heat exchanger (1).
4. solar energy ORC power generation system as claimed in claim 1 is characterized in that: described power take-off (2) is the ORC turbine.
5. solar energy ORC power generation system as claimed in claim 4, is characterized in that: be provided with on described ORC turbine be used to the sealing configuration that prevents that organic working medium from leaking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202917406U CN203271840U (en) | 2013-05-24 | 2013-05-24 | Solar ORC electricity generation system |
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| CN2013202917406U CN203271840U (en) | 2013-05-24 | 2013-05-24 | Solar ORC electricity generation system |
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| CN203271840U true CN203271840U (en) | 2013-11-06 |
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| CN2013202917406U Expired - Fee Related CN203271840U (en) | 2013-05-24 | 2013-05-24 | Solar ORC electricity generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277157A (en) * | 2013-05-24 | 2013-09-04 | 成都昊特新能源技术股份有限公司 | Solar ORC power generation system and power generation method thereof |
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- 2013-05-24 CN CN2013202917406U patent/CN203271840U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277157A (en) * | 2013-05-24 | 2013-09-04 | 成都昊特新能源技术股份有限公司 | Solar ORC power generation system and power generation method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160524 |