CN103775145A - Organic Rankine circulating system with double-ejector supercharging device - Google Patents
Organic Rankine circulating system with double-ejector supercharging device Download PDFInfo
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- CN103775145A CN103775145A CN201410017962.8A CN201410017962A CN103775145A CN 103775145 A CN103775145 A CN 103775145A CN 201410017962 A CN201410017962 A CN 201410017962A CN 103775145 A CN103775145 A CN 103775145A
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Abstract
The invention discloses an organic rankine circulating system with a double-ejector supercharging device. The organic rankine circulating system comprises an evaporator, a primary expanding machine, a primary ejector, an intermediate heat exchanger, a secondary expanding machine, a secondary ejector, a secondary heat return device, a condenser, a primary heat return device and a work medium pump. The ejectors are applied to the organic rankine circulation, after the intermediate gas of the expanding machine passes through the ejectors, the intermediate gas is used for ejecting the low-pressure condensed liquid work medium, the pump power input of the liquid work medium and the back pressure of the expanding machine can be reduced, under the condition that the same heat is inputted to the system, the pump power input is reduced, so that the output power of the organic rankine circulating system is increased, and the system efficiency can be improved.
Description
Technical field
The present invention relates to organic rankine cycle system, in particular, relate to a kind of with ejector lifting condensation power pressure, the electricity generating device of raising organic rankine cycle system efficiency.
Background technique
Adopt the organic Rankine circulation (ORC) of organic working medium place of water steam though can make the expanded range of utilizing of middle low-temperature heat source, but because the difference between temperature and the ambient temperature of middle low-temperature heat source is less, inflation process working pressure is poor little, therefore acting ability is low, energy conversion efficiency is low, has limited thus the applying of organic Rankine circulating generation of low-temperature heat source in using.
Circulate domestic and international many research institutions all in active research for the organic Rankine of middle low-temperature heat source.See technically, compare traditional refrigeration cycle, the Major Difficulties of the organic rankine cycle system of middle low-temperature heat source be to optimize vaporizer design, choose reasonable decompressor form, reduce the power consumpiton of working medium pump and according to cold & heat source temperature choose reasonable working medium.Certainly all difficult points can be summed up 2 points, the organic rankine cycle system efficiency of low-temperature heat source and reduction system cost in how improving.
In the organic rankine cycle system of the middle low-temperature heat source of routine, its critical piece is vaporizer, decompressor, condenser and working medium pump.Vaporizer and condenser are as heat exchanger components, and its optimal design work is carried out in a large number, and gradual perfection, repeats no more.For decompressor and working medium circulating pump, because its input cost is larger, the two is as the core component of system, exists respectively low and large two shortcomings of input work of efficiency.How to solve above-mentioned two shortcomings, improving system effectiveness and reducing working medium pump input work becomes the focus of research.On legacy system, carry out parts improvement and system and improve, as increased regenerator, all can not meet the demands essentially.
Summary of the invention
The technical problems such as the low and working medium pump input work of existing organic rankine cycle system efficiency that what the present invention will solve is is large, a kind of organic rankine cycle system with two injection supercharging devices is provided, can effectively utilize injection principle, reduce pump input work and reduce decompressor back pressure, by the reasonable utilization of ejector, improve the efficiency of whole organic rankine cycle system.
In order to solve the problems of the technologies described above, the present invention is achieved by following technological scheme:
With an organic rankine cycle system for two injection supercharging devices, comprise vaporizer, first order decompressor, first order ejector, Intermediate Heat Exchanger, second level decompressor, second level ejector, second level regenerator, condenser, first order regenerator and working medium pump;
The sender property outlet of described vaporizer is connected with the entrance of described first order decompressor, the middle high-pressure outlet of described first order decompressor is connected with the high pressure entry of described first order ejector, the low tension outlet of described first order decompressor is connected with the working medium entrance of described Intermediate Heat Exchanger, the sender property outlet of described Intermediate Heat Exchanger is connected with the entrance of described second level decompressor, the middle high-pressure outlet of described second level decompressor is connected with the high pressure entry of described second level ejector, the low tension outlet of described second level decompressor is connected with the working medium entrance of described condenser, the sender property outlet of described condenser is connected with the low pressure working fluid entrance of described second level regenerator, the low pressure working fluid outlet of described second level regenerator is connected with the low-pressure inlet of described second level ejector, the outlet of described second level ejector is connected with the high pressure stage working medium entrance of described second level regenerator, the high pressure stage sender property outlet of described second level regenerator is connected with the low pressure stage working medium entrance of described first order regenerator, the low pressure stage sender property outlet of described first order regenerator is connected with the low-pressure inlet of described first order ejector, the outlet of described first order ejector is connected with the high pressure stage working medium entrance of described first order regenerator, the high pressure stage sender property outlet of described first order regenerator is connected with the entrance of described working medium pump, described working medium delivery side of pump is connected with the working medium entrance of described vaporizer,
High temperature heat source is connected with the high temperature heat source entrance of described vaporizer, and the high temperature heat source outlet of described vaporizer is connected with the high temperature heat source entrance of described Intermediate Heat Exchanger, and the high temperature heat source outlet of described Intermediate Heat Exchanger is used for entering Heating Cyclic;
Low-temperature heat source is connected with the low-temperature heat source entrance of described condenser, and the low-temperature heat source outlet of described condenser is used for entering cool cycles.
In the present invention, ejector is applied in the organic Rankine circulation of middle low-temperature heat source, by middle drive of high-pressure gas ejector work, for the condensed fluid working medium of injection low pressure, reduce on the one hand outlet pressure of expansion machine, improve decompressor inlet outlet pressure differential, raise the efficiency, reduce on the other hand the input work of working medium pump by ejector injection low pressure working fluid, system is under the condition of the identical heat of input, the input of pump merit reduces, and the output work of organic rankine cycle system increases, and system effectiveness improves.The fundamentally low and large shortcoming of working medium pump input work of resolution system efficiency.
The invention has the beneficial effects as follows:
(1), in organic rankine cycle system of the present invention, the ejector action by ejector, for condensed fluid provides power, reduces the merit consumption of working medium circulating pump.
(2) in organic rankine cycle system of the present invention, utilize the ejector action of ejector to reduce decompressor back pressure, improve decompressor inlet outlet pressure differential, improve working medium workmanship ability and system effectiveness.
(3) in organic rankine cycle system of the present invention, ejector entrance working medium is decompressor central exit working medium, and Temperature of Working is relatively high, improves by the mixed Temperature of Working of ejector, has reduced the heat exchange amount of high temperature heat source.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the organic rankine cycle system of the two injection supercharging devices of band provided by the present invention.
In figure: 1: vaporizer; 2: first order decompressor; 3: first order ejector; 4: Intermediate Heat Exchanger; 5: second level decompressor; 6: second level ejector; 7: second level regenerator; 8: condenser; 9: first order regenerator; 10: working medium pump.
Embodiment
Below by specific embodiment, the present invention is described in further detail, and following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
As shown in drawings, the present embodiment has disclosed a kind of organic rankine cycle system with two injection supercharging devices, the sender property outlet of vaporizer 1 is connected with the entrance of first order decompressor 2, the middle high-pressure outlet of first order decompressor 2 is connected with the high pressure entry of first order ejector 3, the low tension outlet of first order decompressor 2 is connected with the working medium entrance of Intermediate Heat Exchanger 4, the sender property outlet of Intermediate Heat Exchanger 4 is connected with the entrance of second level decompressor 5, the middle high-pressure outlet of second level decompressor 5 is connected with the high pressure entry of second level ejector 6, the low tension outlet of second level decompressor 5 is connected with the working medium entrance of condenser 8, the sender property outlet of condenser 8 is connected with the low pressure working fluid entrance of second level regenerator 7, the low pressure working fluid outlet of second level regenerator 7 is connected with the low-pressure inlet of second level ejector 6, the outlet of second level ejector 6 is connected with the high pressure stage working medium entrance of second level regenerator 7, the high pressure stage sender property outlet of second level regenerator 7 is connected with the low pressure stage working medium entrance of first order regenerator 9, the low pressure stage sender property outlet of first order regenerator 9 is connected with the low-pressure inlet of first order ejector 3, the outlet of first order ejector 3 is connected with the high pressure stage working medium entrance of first order regenerator 9, the high pressure stage sender property outlet of first order regenerator 9 is connected with the entrance of working medium pump 10, the outlet of working medium pump 10 is connected with the working medium entrance of vaporizer 1, completion system working medium circulation.
High temperature heat source is connected with the high temperature heat source entrance of vaporizer 1, and the high temperature heat source outlet of vaporizer 1 is connected with the high temperature heat source entrance of Intermediate Heat Exchanger 4, and the high temperature heat source outlet of Intermediate Heat Exchanger 4 is used for entering Heating Cyclic, completes high temperature heat source heat exchange.
Low-temperature heat source is connected with the low-temperature heat source entrance of condenser 8, and the low-temperature heat source outlet of condenser 8 is used for entering cool cycles.
The working principle of the organic rankine cycle system of the two injection supercharging devices of band of the present embodiment is as follows:
High temperature heat source, for vaporizer 1 provides heat, makes to become high pressure-temperature gaseous working medium from working medium pump 10 high-pressure liquid working medium out.High pressure-temperature gas working medium enters first order decompressor 2 acting of expanding, outputting power, the middle high-pressure outlet of first order decompressor 2 provides driving fluid for first order ejector 3, again enter Intermediate Heat Exchanger 4 from first order decompressor 2 low tension outlets high-pressure working medium out, working medium in Intermediate Heat Exchanger 4 is heated again by the high temperature heat source after vaporizer 1 heat exchange, High Temperature High Pressure working medium after heating enters second level decompressor 5 acting of expanding again, outputting power, the middle high-pressure outlet of second level decompressor 5 provides driving fluid for second level ejector 6, the gaseous working medium that second level decompressor 5 exports enters condenser 8 and carries out condensation heat transfer by low-temperature heat source, being condensed into liquid low pressure working fluid enters second level regenerator 7 and carries out entering second level ejector 6 after heat exchange, gas-liquid mixed working medium after second level ejector 6 Pressure jettings is through the further cooling heat transferring of second level regenerator 7, then enter first order regenerator 9, then working medium enters into first order ejector 3, the gas-liquid mixed working medium of Pressure jetting is through the further cooling heat transferring of first order regenerator 9, then enter working medium pump 10, after working medium pump 10, working medium enters vaporizer 1 again, complete circulation.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (1)
1. the organic rankine cycle system of the two injection supercharging devices of band, it is characterized in that, comprise vaporizer (1), first order decompressor (2), first order ejector (3), Intermediate Heat Exchanger (4), second level decompressor (5), second level ejector (6), second level regenerator (7), condenser (8), first order regenerator (9) and working medium pump (10);
The sender property outlet of described vaporizer (1) is connected with the entrance of described first order decompressor (2), the middle high-pressure outlet of described first order decompressor (2) is connected with the high pressure entry of described first order ejector (3), the low tension outlet of described first order decompressor (2) is connected with the working medium entrance of described Intermediate Heat Exchanger (4), the sender property outlet of described Intermediate Heat Exchanger (4) is connected with the entrance of described second level decompressor (5), the middle high-pressure outlet of described second level decompressor (5) is connected with the high pressure entry of described second level ejector (6), the low tension outlet of described second level decompressor (5) is connected with the working medium entrance of described condenser (8), the sender property outlet of described condenser (8) is connected with the low pressure working fluid entrance of described second level regenerator (7), the low pressure working fluid outlet of described second level regenerator (7) is connected with the low-pressure inlet of described second level ejector (6), the outlet of described second level ejector (6) is connected with the high pressure stage working medium entrance of described second level regenerator (7), the high pressure stage sender property outlet of described second level regenerator (7) is connected with the low pressure stage working medium entrance of described first order regenerator (9), the low pressure stage sender property outlet of described first order regenerator (9) is connected with the low-pressure inlet of described first order ejector (3), the outlet of described first order ejector (3) is connected with the high pressure stage working medium entrance of described first order regenerator (9), the high pressure stage sender property outlet of described first order regenerator (9) is connected with the entrance of described working medium pump (10), the outlet of described working medium pump (10) is connected with the working medium entrance of described vaporizer (1),
High temperature heat source is connected with the high temperature heat source entrance of described vaporizer (1), the high temperature heat source outlet of described vaporizer (1) is connected with the high temperature heat source entrance of described Intermediate Heat Exchanger (4), and the high temperature heat source outlet of described Intermediate Heat Exchanger (4) is used for entering Heating Cyclic;
Low-temperature heat source is connected with the low-temperature heat source entrance of described condenser (8), and the low-temperature heat source outlet of described condenser (8) is used for entering cool cycles.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016038202A1 (en) * | 2014-09-11 | 2016-03-17 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | System for energy production based on a rankine cycle |
| CN105840259A (en) * | 2016-04-11 | 2016-08-10 | 大连海事大学 | Air extraction heat regenerative organic Rankine circulation system with ejector |
| CN106640247A (en) * | 2016-12-23 | 2017-05-10 | 张承虎 | Thermal power generation system with ejector |
| CN106837442A (en) * | 2017-03-02 | 2017-06-13 | 广东工业大学 | A kind of pair of injecting type ORC system |
| CN108167040A (en) * | 2017-11-17 | 2018-06-15 | 昆明理工大学 | A kind of double compression swelling Organic Rankine Cycle recycling middle and low temperature waste heat power generation systems |
| WO2018107552A1 (en) * | 2016-12-15 | 2018-06-21 | 李华玉 | Multiple combined-cycle power device |
| CN109812309A (en) * | 2019-01-17 | 2019-05-28 | 江苏大学 | A kind of organic rankine cycle system of overcritical double expansion two-stage backheats |
| CN110242375A (en) * | 2019-05-23 | 2019-09-17 | 华电电力科学研究院有限公司 | A kind of twin-stage organic rankine cycle system and its working method based on air-bearing |
| US10436075B2 (en) | 2015-01-05 | 2019-10-08 | General Electric Company | Multi-pressure organic Rankine cycle |
| CN110552750A (en) * | 2019-08-23 | 2019-12-10 | 中国科学院广州能源研究所 | Non-azeotropic organic Rankine-dual-injection combined cooling, heating and power system |
| WO2020228357A1 (en) * | 2019-05-15 | 2020-11-19 | 李华玉 | Combined cycle power apparatus |
| CN112431644A (en) * | 2020-10-21 | 2021-03-02 | 昆明理工大学 | Cooling and supplying system by adjusting flow distribution ratio of working medium |
| CN113309678A (en) * | 2021-06-20 | 2021-08-27 | 山东电力研究院 | Two-stage turbine ocean temperature difference energy thermal cycle power generation system and method |
| CN109812309B (en) * | 2019-01-17 | 2024-06-07 | 江苏大学 | Supercritical double-expansion two-stage backheating organic Rankine cycle system |
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Cited By (19)
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| FR3025831A1 (en) * | 2014-09-11 | 2016-03-18 | Commissariat Energie Atomique | ENERGY PRODUCTION SYSTEM BASED ON RANKINE CYCLE |
| WO2016038202A1 (en) * | 2014-09-11 | 2016-03-17 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | System for energy production based on a rankine cycle |
| US10436075B2 (en) | 2015-01-05 | 2019-10-08 | General Electric Company | Multi-pressure organic Rankine cycle |
| CN105840259A (en) * | 2016-04-11 | 2016-08-10 | 大连海事大学 | Air extraction heat regenerative organic Rankine circulation system with ejector |
| WO2018107552A1 (en) * | 2016-12-15 | 2018-06-21 | 李华玉 | Multiple combined-cycle power device |
| CN106640247A (en) * | 2016-12-23 | 2017-05-10 | 张承虎 | Thermal power generation system with ejector |
| CN106640247B (en) * | 2016-12-23 | 2018-02-27 | 张承虎 | A kind of heat power generating system with injector |
| CN106837442A (en) * | 2017-03-02 | 2017-06-13 | 广东工业大学 | A kind of pair of injecting type ORC system |
| CN108167040B (en) * | 2017-11-17 | 2020-05-15 | 昆明理工大学 | Double-pressure expansion organic Rankine cycle recovery medium-low temperature waste heat power generation system |
| CN108167040A (en) * | 2017-11-17 | 2018-06-15 | 昆明理工大学 | A kind of double compression swelling Organic Rankine Cycle recycling middle and low temperature waste heat power generation systems |
| CN109812309A (en) * | 2019-01-17 | 2019-05-28 | 江苏大学 | A kind of organic rankine cycle system of overcritical double expansion two-stage backheats |
| CN109812309B (en) * | 2019-01-17 | 2024-06-07 | 江苏大学 | Supercritical double-expansion two-stage backheating organic Rankine cycle system |
| WO2020228357A1 (en) * | 2019-05-15 | 2020-11-19 | 李华玉 | Combined cycle power apparatus |
| CN110242375A (en) * | 2019-05-23 | 2019-09-17 | 华电电力科学研究院有限公司 | A kind of twin-stage organic rankine cycle system and its working method based on air-bearing |
| CN110552750A (en) * | 2019-08-23 | 2019-12-10 | 中国科学院广州能源研究所 | Non-azeotropic organic Rankine-dual-injection combined cooling, heating and power system |
| CN112431644A (en) * | 2020-10-21 | 2021-03-02 | 昆明理工大学 | Cooling and supplying system by adjusting flow distribution ratio of working medium |
| CN112431644B (en) * | 2020-10-21 | 2023-03-10 | 昆明理工大学 | Cooling and heating combined supply system by adjusting flow distribution ratio of working medium |
| CN113309678A (en) * | 2021-06-20 | 2021-08-27 | 山东电力研究院 | Two-stage turbine ocean temperature difference energy thermal cycle power generation system and method |
| CN113309678B (en) * | 2021-06-20 | 2023-02-03 | 国网山东省电力公司电力科学研究院 | Two-stage turbine ocean temperature difference energy thermal cycle power generation system and method |
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Application publication date: 20140507 |