CN203271829U - Double-power ORC power generation system - Google Patents
Double-power ORC power generation system Download PDFInfo
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- CN203271829U CN203271829U CN 201320291367 CN201320291367U CN203271829U CN 203271829 U CN203271829 U CN 203271829U CN 201320291367 CN201320291367 CN 201320291367 CN 201320291367 U CN201320291367 U CN 201320291367U CN 203271829 U CN203271829 U CN 203271829U
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Abstract
The utility model discloses a double-power ORC power generation system which is high in thermal energy use ratio and power generating efficiency. The double-power ORC power generation system mainly comprises a heat exchanger, an ORC turbine, a generator, an organic working medium circulation pump and a condenser, wherein the heat exchanger is connected with a heat source, and the generator is connected with the power output end of the ORC turbine. The heat source comprises a boiler and a back-pressure steam turbine. A steam outlet of the boiler is connected with a medium inlet of the back-pressure steam turbine. The power output end of the back-pressure steam turbine is connected with the power output end of the ORC turbine in series. A medium outlet of the back-pressure steam turbine is connected with a heat source inlet of the heat exchanger. A heat source outlet of the heat exchanger is connected with a water inlet of the boiler through the water circulation pump. The boiler is further provided with a smoke inlet and a smoke outlet. A water channel is arranged between a water inlet of the boiler and the steam outlet of the boiler. A flue for carrying out heat exchanging between the smoke and the water inside the water channel is arranged between the smoke inlet and the smoke outlet of the boiler.
Description
Technical field
The utility model relates to a kind of power generation system, relates in particular to a kind of double dynamical 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 is connected with thermal source and carries 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, the utilization ratio of thermal source is low, can not utilize effectively fully thermal source to generate electricity; 2, system is through after using for a long time, and inner organic working medium generation loss can't in time replenish.
At present, also have a kind of power generation system to adopt back pressure turbine to drive the generator generating, the bad adaptability of this power generation system to load variations, unit generation amount are limited by heat load and change.When low heat loads, turbine efficiency descends, thereby economic benefit is reduced.
The model utility content
The technical problem that the utility model solves is to provide the high double dynamical ORC power generation system of a kind of thermal source utilization ratio.
the technological scheme that its technical problem that solves the utility model adopts is: double dynamical ORC power generation system, comprise the heat exchanger that is connected with thermal source, the ORC turbine, the generator that is connected with the clutch end of ORC turbine, 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, the ORC turbine comprises turbine organic working medium entrance and the outlet of turbine organic working medium, the outlet of heat exchanger organic working medium is connected with turbine organic working medium entrance, condenser comprises condenser organic working medium entrance and the outlet of condenser organic working medium, the outlet of turbine organic working medium is connected with condenser organic working medium entrance, the outlet of condenser organic working medium is connected with heat exchanger organic working medium entrance by the organic working medium recycle pump, described thermal source comprises boiler and back pressure turbine, the steam outlet of boiler is connected with the medium inlet of back pressure turbine, the clutch end of back pressure turbine is connected with the clutch end of ORC turbine, the media outlet of back pressure turbine is connected with the thermal source entrance of heat exchanger, the thermal source outlet of heat exchanger is connected with the water inlet of boiler by water-circulating pump, also be provided with flue gas inlet and smoke outlet on boiler, be provided with water channel between the water inlet of boiler and steam outlet, be provided with between the flue gas inlet of boiler and smoke outlet be used to making water in flue gas and water channel carry out the flue of exchange heat.
Above-mentioned power generation system is carried out the exhaust of back pressure turbine by heat exchanger cooling, has reduced the cold source energy of whole system, and the heat energy of the exhaust of back pressure turbine is utilized effectively, and has improved the utilization ratio of heat energy.Owing to adopting double dynamical generating, generating efficiency is improved simultaneously.
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: the thermal source ingress of described heat exchanger is provided with current equalizer.
Be further: also be provided with a minute gas branch pipe structure between the thermal source entrance of the media outlet of described back pressure turbine and heat exchanger, also be provided with the return branch structure between the thermal source outlet of described heat exchanger and water-circulating pump.
Be further: also be provided with deaerating plant between the thermal source outlet of described heat exchanger and the water inlet of boiler.
The beneficial effects of the utility model are:
1, by heat exchanger, the exhaust of back pressure turbine is carried out coolingly, reduced the cold source energy of whole system, the heat utilization rate of whole power generation system is very high.
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, the uniformity due to flow of water vapor can impact the temperature of organic working medium, and the temperature fluctuation of organic working medium can exert an influence to the physical property of organic working medium again, therefore is conducive to guarantee that by current equalizer is set organic working medium works for a long time.
4, divide gas branch pipe structure and return branch structure can realize realizing cogeneration of heat and power to the purpose of user's heat supply, further improve energy utilization rate.
5, deaerating plant can be used for reducing intrasystem water to the corrosion of system.The Main Function of deaerating plant is oxygen and other incondensable gas of removing in boiler feed water, to guarantee the quality of feedwater.If oxygen in water gas will make the metal that contacts with water be corroded, if there is gas to build up simultaneously, with the thermal resistance of heat transfer is increased, reduce the heat-transfer effect of equipment in heat exchanger.Therefore it is all disadvantageous being dissolved with any gas in water, oxygen especially, and it will directly threaten the safe operation of equipment.
Description of drawings
Fig. 1 is the schematic diagram of double dynamical ORC power generation system of the present utility model;
be labeled as in figure: heat exchanger 1, thermal source entrance 11, thermal source outlet 13, heat exchanger organic working medium entrance 14, heat exchanger organic working medium outlet 12, ORC turbine 2, turbine organic working medium entrance 21, turbine organic working medium outlet 23, the clutch end 22 of ORC turbine, generator 3, back pressure turbine 4, medium inlet 41, the clutch end 42 of back pressure turbine, media 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, boiler 8, steam outlet 81, water inlet 82, flue gas inlet 83, smoke outlet 84, water-circulating pump 9, deaerating plant 100, return branch structure 200, divide gas branch pipe structure 300.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
as shown in Figure 1, double dynamical ORC power generation system of the present utility model, comprise the heat exchanger 1 that is connected with thermal source, ORC turbine 2, the generator 3 that is connected with the clutch end 22 of ORC turbine, 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, ORC turbine 2 comprises turbine organic working medium entrance 21 and turbine organic working medium outlet 23, heat exchanger organic working medium outlet 12 is connected with turbine organic working medium entrance 21, condenser 5 comprises condenser organic working medium entrance 51 and condenser organic working medium outlet 52, turbine organic working medium outlet 23 is connected with condenser organic working medium entrance 51, the outlet 52 of condenser organic working medium is connected with heat exchanger organic working medium entrance 14 by organic working medium recycle pump 7, described thermal source comprises boiler 8 and back pressure turbine 4, the steam outlet 81 of boiler 8 is connected with the medium inlet 41 of back pressure turbine 4, the clutch end 42 of back pressure turbine is connected with the clutch end 22 of ORC turbine, the media outlet 43 of back pressure turbine 4 is connected with the thermal source entrance 11 of heat exchanger 1, the thermal source outlet 13 of heat exchanger 1 is connected with the water inlet 82 of boiler 8 by water-circulating pump 9, also be provided with flue gas inlet 83 and smoke outlet 84 on boiler, be provided with water channel between the water inlet 82 of boiler and steam outlet 81, be provided with between the flue gas inlet 83 of boiler 8 and smoke outlet 84 be used to making water in flue gas and water channel carry out the flue of exchange heat.Above-mentioned condenser can adopt the multiple types of cooling such as air cooling.The flow direction of water vapour 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 utilize the flue gas that enters in boiler that the water in boiler is heated into water vapour by boiler 8, utilize water vapour to drive back pressure turbine 4 work, the water vapour of being discharged by back pressure turbine 4 enters that heat exchanger 1 is interior is heated into gaseous state with organic working medium in system, forms current after the water vapour cooling and by entering boiler 8 after water-circulating pump 9 pressurizations; Impel 2 work of ORC turbine by the gaseous state organic working medium, generate electricity by back pressure turbine 4 and the common generator 3 that drives of ORC turbine 2, ORC turbine 2 enters condenser 5 with organic working medium and is cooled to liquid organic working medium, and liquid organic working medium enters in heat exchanger 1 after 7 pressurizations of organic working medium recycle pump form the supercooled liquid organic working medium.Generate electricity by back pressure turbine 4 and the common generator 3 that drives of ORC turbine 2, can fully effectively utilize heat energy.Heat utilization rate significantly improves.Generating efficiency also is improved.
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 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.
Be further, can affect the temperature variation of organic working medium due to the temperature variation of the thermal source in heat exchanger 1, the temperature fluctuation of organic working medium can exert an influence to the physical property of organic working medium again, therefore in order to make the work of organic working medium long-term stability, the thermal source ingress of described heat exchanger 1 is provided with current equalizer.Above-mentioned current equalizer can be with flue gas flow equalizing device of the prior art.For simplified structure, above-mentioned current equalizer can be a plurality of steel plates that from top to bottom set gradually, and has a plurality of vents on steel plate, makes water vapour pass through successively a plurality of steel plates, reaches the purpose of current-sharing.
For on the basis of the above, further utilize heat energy, also be provided with a minute gas branch pipe structure 300 between the media outlet 43 of described back pressure turbine 4 and the thermal source entrance 11 of heat exchanger 1, also be provided with return branch structure 200 between the thermal source outlet 13 of described heat exchanger 1 and water-circulating pump 9.Above-mentioned minute gas branch pipe structure 300 can comprise minute gas branch pipe and a plurality of control valve.Can be to user's heat supply by this structure.Above-mentioned return branch structure 200 can comprise a return branch and a plurality of control valve.Water after using by the recyclable user of this structure, and can be with this part water for the water yield in replenishment system.
In addition, on the basis of the above, also be provided with deaerating plant 100 between the water inlet 82 of the outlet 13 of the thermal source of described heat exchanger 1 and boiler 8.
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. double dynamical ORC power generation system, comprise the heat exchanger (1) that is connected with thermal source, ORC turbine (2), the generator (3) that is connected with the clutch end (22) of ORC turbine, 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), ORC turbine (2) comprises turbine organic working medium entrance (21) and turbine organic working medium outlet (23), heat exchanger organic working medium outlet (12) is connected with turbine organic working medium entrance (21), condenser (5) comprises condenser organic working medium entrance (51) and condenser organic working medium outlet (52), turbine organic working medium outlet (23) is connected with condenser organic working medium entrance (51), condenser organic working medium outlet (52) is connected with heat exchanger organic working medium entrance (14) by organic working medium recycle pump (7), it is characterized in that: described thermal source comprises boiler (8) and back pressure turbine (4), the steam outlet (81) of boiler (8) is connected with the medium inlet (41) of back pressure turbine (4), the clutch end of back pressure turbine (42) is connected with the clutch end (22) of ORC turbine, the media outlet (43) of back pressure turbine (4) is connected with the thermal source entrance (11) of heat exchanger (1), the thermal source outlet (13) of heat exchanger (1) is connected with the water inlet (82) of boiler (8) by water-circulating pump (9), also be provided with flue gas inlet (83) and smoke outlet (84) on boiler, be provided with water channel between the water inlet of boiler (82) and steam outlet (81), be provided with between the flue gas inlet (83) of boiler (8) and smoke outlet (84) be used to making water in flue gas and water channel carry out the flue of exchange heat.
2. double dynamical 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. double dynamical ORC power generation system as claimed in claim 1 is characterized in that: the thermal source ingress of described heat exchanger (1) is provided with current equalizer.
4. double dynamical ORC power generation system as claimed in claim 1, it is characterized in that: also be provided with a minute gas branch pipe structure (300) between the media outlet (43) of described back pressure turbine (4) and the thermal source entrance (11) of heat exchanger (1), also be provided with return branch structure (200) between the thermal source outlet (13) of described heat exchanger (1) and water-circulating pump (9).
5. double dynamical ORC power generation system as claimed in claim 1, is characterized in that: also be provided with deaerating plant (100) between the thermal source outlet (13) of described heat exchanger (1) and the water inlet (82) of boiler (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320291367 CN203271829U (en) | 2013-05-24 | 2013-05-24 | Double-power ORC power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320291367 CN203271829U (en) | 2013-05-24 | 2013-05-24 | Double-power ORC power generation system |
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| CN203271829U true CN203271829U (en) | 2013-11-06 |
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| CN 201320291367 Expired - Fee Related CN203271829U (en) | 2013-05-24 | 2013-05-24 | Double-power ORC power generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277147A (en) * | 2013-05-24 | 2013-09-04 | 成都昊特新能源技术股份有限公司 | Dual-power ORC power generation system and power generation method of same |
| CN103670556A (en) * | 2013-11-27 | 2014-03-26 | 陕西擎华新能源技术有限公司 | Double-working-medium circulation waste heat power generating system |
-
2013
- 2013-05-24 CN CN 201320291367 patent/CN203271829U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277147A (en) * | 2013-05-24 | 2013-09-04 | 成都昊特新能源技术股份有限公司 | Dual-power ORC power generation system and power generation method of same |
| CN103670556A (en) * | 2013-11-27 | 2014-03-26 | 陕西擎华新能源技术有限公司 | Double-working-medium circulation waste heat power generating system |
| CN103670556B (en) * | 2013-11-27 | 2015-08-12 | 陕西擎华新能源技术有限公司 | A kind of double-work medium cycle waste heat generating system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |