CN104454056A - Dual-working-medium cycle power generation system - Google Patents

Dual-working-medium cycle power generation system Download PDF

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Publication number
CN104454056A
CN104454056A CN201410566472.3A CN201410566472A CN104454056A CN 104454056 A CN104454056 A CN 104454056A CN 201410566472 A CN201410566472 A CN 201410566472A CN 104454056 A CN104454056 A CN 104454056A
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CN
China
Prior art keywords
heat
working medium
double
decompressor
spray
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Pending
Application number
CN201410566472.3A
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Chinese (zh)
Inventor
松原利男
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RENYUAN AIR CONDITIONER EQUIPMENT CO Ltd YANTAI CITY
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RENYUAN AIR CONDITIONER EQUIPMENT CO Ltd YANTAI CITY
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Priority to CN201410566472.3A priority Critical patent/CN104454056A/en
Publication of CN104454056A publication Critical patent/CN104454056A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The invention provides a dual-working-medium cycle power generation system which comprises a steam generator, an expander, an electric generator, an evaporative condenser and a working medium pump. The steam generator is used for heating a working medium through waste heat and converting the working medium into high pressure steam entering the expander; the expander is used for working under driving of the high pressure steam; the electric generator is coaxially connected with the expander and generates power under driving of the expander; the evaporative condenser is used for cooling a low pressure steam working medium discharged from the expander into a liquid working medium through a cooling medium; the working medium pump is used for conveying the liquid working medium discharged from the evaporative condenser to the steam generator. Because the structure of the evaporative condenser is compact, the size of cooling equipment in the power generation system decreases, expenses for cooling water distribution pipes are also omitted, and more cost is saved.

Description

A kind of double-work medium cycle generating system
Technical field
The present invention relates to and utilize waste-heat power generation technical field, particularly a kind of double-work medium cycle generating system.
Background technique
At present, the double-work medium cycle generating system being carried out utilizing by the used heat in factory is more common, such as, utilizes the used heat, underground heat etc. of the used heat of fume emission, hot water emission, lower boiling working medium is evaporated, to drive decompressor and electrical power generators.
See Fig. 1, this figure is double-work medium cycle generating system schematic diagram of the prior art.
The meaning of the label representative in Fig. 1 is as follows:
1, steam generator; 2, decompressor; 3, generator; 4, condenser; 5, cooling tower; 6, cooling waterpump; 7, working medium pump.
Used heat w1 enters steam generator 1, and used heat w1 heats working medium.The steam of High Temperature High Pressure is become by the working medium after heating.The steam of High Temperature High Pressure arrives decompressor 2, is worked by pressure differential decompressor 2, drives simultaneously and generates electricity with the coaxial generator 3 be connected of decompressor 2.
Enter condenser 4 from the working medium of decompressor 2 low pressure steam out, the cooling medium w2 in cooling tower 5 is transported to condenser 4 by cooling waterpump 6.As can be seen from Figure 1, need between cooling tower 5 with condenser 4 to be connected by cooling water pipe.
Working medium cooled medium w2 cooling in condenser 4 of low pressure steam becomes liquid refrigerant.Be sent to steam generator 1 from condenser 4 liquid refrigerant out by working medium pump 7, a so far circulation terminates.
Cooling equipment in this power generation system that Fig. 1 provides comprises condenser 4, cooling tower 5, cooling waterpump 6 and cooling water pipe, and the number of obvious equipment is many, causes that volume is large, cost is high.
Therefore, those skilled in the art need to provide a kind of double-work medium cycle generating system, can reduce volume and the cost of cooling equipment.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of double-work medium cycle generating system, can reduce volume and the cost of cooling equipment.
The embodiment of the present invention provides a kind of double-work medium cycle generating system, comprising: steam generator, decompressor, generator, evaporative condenser and working medium pump;
Described steam generator, for being heated working medium by used heat, being become high pressure steam by described working medium and entering described decompressor;
Described decompressor, for working under the driving of described high pressure steam;
Described generator, is coaxially connected with described decompressor, generates electricity under the driving of described decompressor;
Described evaporative condenser, for being cooled to liquid refrigerant by cooling medium by the low pressure steam working medium of discharging from described decompressor;
Described working medium pump, for being delivered to described steam generator by the liquid refrigerant of discharging from described evaporative condenser.
Preferably, described evaporative condenser comprises: heat transfer nest of tubes, the first spray device, spray pump and blower fan;
Described heat transfer nest of tubes, the low pressure steam working medium of discharging for making described decompressor is circulation in pipe;
Described first spray device, sprays on the surface of described heat transfer nest of tubes for the cooling medium sent by described spray pump;
Described blower fan, for drying to described heat transfer nest of tubes surface.
Preferably, in described heat transfer nest of tubes, the cross section of heat-transfer pipe is oval, and the air flow that the long axis direction of described ellipse and described blower fan are blown parallels.
Preferably, temperature transducer and controller is also comprised;
Described temperature transducer, for measures ambient temperature, sends to described controller by the ambient temperature of measurement;
Described controller, for controlling the rotating speed of described spray pump or closing described spray pump according to described ambient temperature.
Preferably, described controller, also for controlling the rotating speed of described blower fan according to described ambient temperature or closing described blower fan.
Preferably, described controller is arranged independent of described blower fan and described spray pump.
Preferably, described controller is integrated in described spray pump or is integrated in described blower fan.
Preferably, described steam generator is falling film type steam generator, and described falling film type steam generator comprises: heat-transfer pipe and the second spray device;
Described heat-transfer pipe inside passes into described used heat;
Described second spray device, sprays on the surface of described heat-transfer pipe for the described liquid refrigerant sent from described evaporative condenser by working medium pump.
Preferably, arrange according to in-line arrangement between the heat-transfer pipe in described heat conduction nest of tubes, or row is arranged according to fork.
Preferably, described cooling medium is water.
Compared with prior art, the present invention has the following advantages:
The power generation system evaporative condenser that the embodiment of the present invention provides instead of the cooling tower+condenser+cooling waterpump+cooling water pipe in Fig. 1.Namely the evaporative condenser that the present embodiment provides can realize the identical function of above cooling equipment in Fig. 1, due to the compact structure of evaporative condenser, therefore, and smaller volume, and also eliminate this part expense of cooling water pipe, therefore also more save cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is double-work medium cycle generating system schematic diagram of the prior art;
Fig. 2 is double-work medium cycle generating system embodiment one schematic diagram provided by the invention;
Fig. 3 is double-work medium cycle generating system embodiment three schematic diagram provided by the invention;
Fig. 4 a is the schematic cross-section of heat transfer nest of tubes in-line arrangement provided by the invention;
Fig. 4 b is the schematic cross-section of heat transfer nest of tubes provided by the invention fork row.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment one:
See Fig. 2, this figure is double-work medium cycle generating system embodiment one schematic diagram provided by the invention.
The implication of the reference character in Fig. 2 is as follows:
1, steam generator; 2, decompressor; 3, generator; 7, working medium pump; 8, evaporative condenser; 9, temperature transducer; W1, used heat; 8a, heat transfer nest of tubes; 8b, spray pump; 8c, the first spray device; 8d, blower fan; 8e, fan motor.
The double-work medium cycle generating system that the present embodiment provides, comprising: steam generator 1, decompressor 2, generator 3, evaporative condenser 4 and working medium pump 7;
Described steam generator 1, for being heated working medium by used heat, being become high pressure steam and entering described decompressor 2 by described working medium;
Become high pressure steam by the working medium heated, arrive decompressor 2, by pressure differential decompressor 2.
Described decompressor 2, for working under the driving of described high pressure steam;
Described generator 3, is coaxially connected with described decompressor 2, generates electricity under the driving of described decompressor 2;
Described evaporative condenser 8, for being cooled to liquid refrigerant by cooling medium by the low pressure steam working medium of discharging from described decompressor 2;
Described working medium pump 7, for being delivered to described steam generator by the liquid refrigerant of discharging from described evaporative condenser 8.
Can obviously find out compared with Fig. 1 of prior art, the power generation system evaporative condenser that the embodiment of the present invention provides instead of the cooling tower+condenser+cooling waterpump+cooling water pipe in Fig. 1.Namely the evaporative condenser that the present embodiment provides can realize the identical function of above cooling equipment in Fig. 1, due to the compact structure of evaporative condenser, therefore, and smaller volume, and also eliminate this part expense of cooling water pipe, therefore also more save cost.
Embodiment two:
Continue see Fig. 2.
The described evaporative condenser that the present embodiment provides comprises: heat transfer nest of tubes 8a, spray pump 8b, the first spray device 8c and blower fan 8d;
Described heat transfer nest of tubes 8a, the low pressure steam working medium of discharging for making described decompressor 2 is circulation in pipe;
Be understandable that, the low pressure steam working medium of coming from decompressor 2 circulates in heat transfer nest of tubes 8a.
Described first spray device 8c, sprays on the surface of described heat transfer nest of tubes 8a for the cooling medium sent by described spray pump 8b;
Described blower fan 8d, for drying to described heat transfer nest of tubes 8a surface.
Be water below with cooling medium for example composition graphs 2 introduces the cooling principle of the power generation system that the present embodiment provides.
The heat transfer nest of tubes 8a entering evaporative condenser 8 from decompressor 2 low pressure steam is out inner.Water bottom evaporative condenser 8 is delivered to spray equipment 8c by spray pump 8b, and the water sprayed by spray equipment 8c, along the outside of heat transfer nest of tubes 8a, falls into below successively.The spraying water fallen carries out heat exchange with the low pressure steam working medium of heat transfer nest of tubes 8a internal flow, a part of spraying water evaporation.The spraying water of evaporation and blower fan 8d take out together with the air that draws and are released in air.Air makes the spraying water of evaporation shift, simultaneously the spraying water on Cooling Heat Transfer nest of tubes 8a surface.
As can be seen here, utilize evaporative condenser can realize the condensation of working medium in the present embodiment, utilize used heat to generate electricity.
In addition, temperature transducer 9 and controller (not shown) can also be comprised in the power generation system that the present embodiment provides;
Described temperature transducer 9, for measures ambient temperature, sends to described controller by the ambient temperature of measurement;
Described controller, during for judging described ambient temperature lower than preset temperature value, closes described blower fan 8d.
Be understandable that, except closing blower fan 8d, the rotating speed of spray pump 8b can also be controlled.
Described temperature transducer 9, for measures ambient temperature, sends to described controller by the ambient temperature of measurement;
It should be noted that, temperature transducer 9 can carry out measures ambient temperature by measurement dry-bulb temperature or wet-bulb temperature.
Described controller, for controlling the rotating speed of spray pump 8b according to described ambient temperature.Such as, during ambient temperature height, the rotating speed controlling spray pump 8b raises; When ambient temperature is lower, the rotating speed controlling spray pump 8b reduces.
Be understandable that, except closing blower fan 8d, described controller is also for controlling the rotating speed of described blower fan 8d according to described ambient temperature.Such as, when ambient temperature is higher, the rotating speed controlling blower fan 8d raises, and when the temperature of the surroundings is low, the rotating speed controlling blower fan 8d reduces.
It should be noted that, described controller is arranged independent of described blower fan and described spray pump.
In addition, described controller also can be integrated in described spray pump 8b or be integrated in described blower fan 8d.
Be understandable that, by controlling the working condition of blower fan and/or spray pump to the detection of ambient temperature, can realize energy-conservation well.Such as, when the temperature of the surroundings is low, close spray pump, evaporative condenser can be made to be operated in air-cooling type, namely run in air cooled condenser mode.
Embodiment three:
See Fig. 3, this figure is double-work medium cycle generating system embodiment three schematic diagram provided by the invention.
In the present embodiment, described steam generator 1 is falling film type steam generator 1, and described falling film type steam generator 1 comprises: heat-transfer pipe and the second spray device 1a;
Described heat-transfer pipe inside passes into described used heat;
Described second spray device 1a, sprays on the surface of described heat-transfer pipe for the described liquid refrigerant sent from described evaporative condenser 8 by working medium pump.
Adopt falling film type steam generator 1 in the present embodiment, the loading of working medium can be saved.Steam generator 1 of the prior art is generally full-liquid type, namely the loading of working medium needs liquid level very high, the a lot of working medium of such needs, and in the present embodiment, adopt falling film type steam generator restrain evaporation temperature to rise along with working medium liquid level, thus can heat exchange efficiency be improved.
See Fig. 4 a, this figure is the schematic cross-section of heat transfer nest of tubes in-line arrangement provided by the invention.
Arrange according to in-line arrangement between heat-transfer pipe in described heat conduction nest of tubes, or,
See Fig. 4 b, this figure is the schematic cross-section of heat transfer nest of tubes provided by the invention fork row.
Except can adopting the in-line arrangement mode shown in Fig. 4 a, can also arrange according to fork row between the heat-transfer pipe in described heat conduction nest of tubes, as shown in Figure 4 b.
It should be noted that, as can be seen from Fig. 4 a and Fig. 4 b, in heat transfer nest of tubes, the cross section of heat-transfer pipe is oval, and the air flow that the long axis direction of described ellipse and described blower fan are blown parallels, and can reduce the resistance of air like this.
Heat-transfer pipe is mined massively downward with oval long axis normal, and the cooling medium of spray not only can be made to flow down from heat transfer nest of tubes equably.But also the area of contact of the cooling medium of heat-transfer pipe and spray can be strengthened, thus make the working medium in heat-transfer pipe and extraneous cooling working medium heat-shift more.
And the cross section of the nest of tubes that conducts heat in prior art adopts circle usually, and there is a shortcoming in circular pipe, and the cooling medium being exactly pipe foot spray not easily flows, and this part heat transfer area can not play a role effectively like this.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.

Claims (10)

1. a double-work medium cycle generating system, is characterized in that, comprising: steam generator, decompressor, generator, evaporative condenser and working medium pump;
Described steam generator, for being heated working medium by used heat, being become high pressure steam by described working medium and entering described decompressor;
Described decompressor, for working under the driving of described high pressure steam;
Described generator, is coaxially connected with described decompressor, generates electricity under the driving of described decompressor;
Described evaporative condenser, for being cooled to liquid refrigerant by cooling medium by the low pressure steam working medium of discharging from described decompressor;
Described working medium pump, for being delivered to described steam generator by the liquid refrigerant of discharging from described evaporative condenser.
2. double-work medium cycle generating system according to claim 1, is characterized in that, described evaporative condenser comprises: heat transfer nest of tubes, the first spray device, spray pump and blower fan;
Described heat transfer nest of tubes, the low pressure steam working medium of discharging for making described decompressor is circulation in pipe;
Described first spray device, sprays on the surface of described heat transfer nest of tubes for the cooling medium sent by described spray pump;
Described blower fan, for drying to described heat transfer nest of tubes surface.
3. double-work medium cycle generating system according to claim 2, is characterized in that, in described heat transfer nest of tubes, the cross section of heat-transfer pipe is oval, and the air flow that the long axis direction of described ellipse and described blower fan are blown parallels.
4. the double-work medium cycle generating system according to any one of claim 1-3, is characterized in that, also comprises temperature transducer and controller;
Described temperature transducer, for measures ambient temperature, sends to described controller by the ambient temperature of measurement;
Described controller, for controlling the rotating speed of described spray pump or closing described spray pump according to described ambient temperature.
5. double-work medium cycle generating system according to claim 4, is characterized in that, described controller, also for controlling the rotating speed of described blower fan according to described ambient temperature or closing described blower fan.
6. double-work medium cycle generating system according to claim 5, is characterized in that, described controller is arranged independent of described blower fan and described spray pump.
7. double-work medium cycle generating system according to claim 5, is characterized in that, described controller is integrated in described spray pump or is integrated in described blower fan.
8. double-work medium cycle generating system according to claim 1, is characterized in that, described steam generator is falling film type steam generator, and described falling film type steam generator comprises: heat-transfer pipe and the second spray device;
Described heat-transfer pipe inside passes into described used heat;
Described second spray device, sprays on the surface of described heat-transfer pipe for the described liquid refrigerant sent from described evaporative condenser by working medium pump.
9. double-work medium cycle generating system according to claim 3, is characterized in that, arranges between the heat-transfer pipe in described heat conduction nest of tubes according to in-line arrangement, or row is arranged according to fork.
10. double-work medium cycle generating system according to claim 1, is characterized in that, described cooling medium is water.
CN201410566472.3A 2014-10-22 2014-10-22 Dual-working-medium cycle power generation system Pending CN104454056A (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1851364A (en) * 2006-05-22 2006-10-25 袁君 Intelligent frequency-variable evaporation-type condensator
CN2924457Y (en) * 2006-07-14 2007-07-18 华南理工大学 Intermittent spiral oval coiled-tube evaporating condensator
CN102000438A (en) * 2010-10-19 2011-04-06 大连理工大学 Horizontal elliptical tube falling film evaporator/condenser
CN201926217U (en) * 2011-01-15 2011-08-10 颜汉兴 Evaporation type condenser
CN202485286U (en) * 2012-03-09 2012-10-10 浙江奥星制冷设备有限公司 Evaporative condenser with elliptical tubes
CN102997510A (en) * 2013-01-03 2013-03-27 刘玉岭 Evaporative type condenser, refrigeration and air conditioning unit applies the same and control method thereof
CN203132218U (en) * 2013-03-12 2013-08-14 毕节金河化工有限公司 Evaporative condenser
CN203249525U (en) * 2013-04-09 2013-10-23 华北水利水电学院 Heat pipe type organic working medium falling film evaporator utilizing low temperature exhaust heat
CN203655373U (en) * 2013-10-31 2014-06-18 北京华航盛世能源技术有限公司 Organic Rankine cycle electric generating set adopting evaporative condenser and generating system thereof
CN204225946U (en) * 2014-10-22 2015-03-25 烟台荏原空调设备有限公司 A kind of double-work medium cycle generating system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1851364A (en) * 2006-05-22 2006-10-25 袁君 Intelligent frequency-variable evaporation-type condensator
CN2924457Y (en) * 2006-07-14 2007-07-18 华南理工大学 Intermittent spiral oval coiled-tube evaporating condensator
CN102000438A (en) * 2010-10-19 2011-04-06 大连理工大学 Horizontal elliptical tube falling film evaporator/condenser
CN201926217U (en) * 2011-01-15 2011-08-10 颜汉兴 Evaporation type condenser
CN202485286U (en) * 2012-03-09 2012-10-10 浙江奥星制冷设备有限公司 Evaporative condenser with elliptical tubes
CN102997510A (en) * 2013-01-03 2013-03-27 刘玉岭 Evaporative type condenser, refrigeration and air conditioning unit applies the same and control method thereof
CN203132218U (en) * 2013-03-12 2013-08-14 毕节金河化工有限公司 Evaporative condenser
CN203249525U (en) * 2013-04-09 2013-10-23 华北水利水电学院 Heat pipe type organic working medium falling film evaporator utilizing low temperature exhaust heat
CN203655373U (en) * 2013-10-31 2014-06-18 北京华航盛世能源技术有限公司 Organic Rankine cycle electric generating set adopting evaporative condenser and generating system thereof
CN204225946U (en) * 2014-10-22 2015-03-25 烟台荏原空调设备有限公司 A kind of double-work medium cycle generating system

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Application publication date: 20150325