KR101614928B1 - Organic rankine cycle system - Google Patents
Organic rankine cycle system Download PDFInfo
- Publication number
- KR101614928B1 KR101614928B1 KR1020150087609A KR20150087609A KR101614928B1 KR 101614928 B1 KR101614928 B1 KR 101614928B1 KR 1020150087609 A KR1020150087609 A KR 1020150087609A KR 20150087609 A KR20150087609 A KR 20150087609A KR 101614928 B1 KR101614928 B1 KR 101614928B1
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- KR
- South Korea
- Prior art keywords
- flow path
- storage tank
- working fluid
- lubricant
- lubricating oil
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/98—Lubrication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to an organic Rankine cycle system comprising an evaporator for heating and evaporating a working fluid, an expander for generating a driving force using a working fluid evaporated in the evaporator, a condenser for condensing the working fluid discharged from the expander, And a circulation pump for pressurizing the working fluid condensed by the condenser and returning the working fluid to the evaporator, wherein the one side is connected to the evaporator side and the other side is connected to the inflator side, And a high-pressure region and a low-pressure region; And a lubricant storage tank connected to the high pressure region of the lubricant supply portion through a first flow path and connected to the low pressure region of the lubricant supply portion through a second flow path and storing lubricant oil, And the lubricating oil stored in the lubricating oil storage tank is supplied to the low pressure region having a low internal pressure of the lubricating portion through the second flow path.
Description
The present invention relates to an organic Rankine cycle system, and more particularly to an organic Rankine cycle system that can easily supply lubricant to an expander using the working fluid's own pressure in an organic Rankine cycle system.
Recently, environmental and energy issues have become heavy issues in all countries around the world, and the environment and energy industry are becoming important factors for promising industries and national competitiveness.
In order to cope with global warming and prepare for the era of high oil prices, it is essential to supply and expand renewable energy that can replace current fossil fuel energy. It recognizes the renewable energy industry as a high value added next generation industry worldwide, We are continuously supporting industry upbringing.
In particular, the development of technologies for improving the efficiency of systems that use renewable energy rather than fossil fuels has attracted the most attention as a preliminary issue. As part of such efforts, technical studies on the improvement of efficiency of organic Rankine cycle using industrial waste heat and renewable energy Is going on.
A typical organic Rankine cycle system is a system in which a gaseous working fluid having a high pressure of 10 bar or more while passing through an evaporator is converted into an electric energy, which is generated by rotating an expander such as a turbine.
In the organic Rankine cycle system as described above, lubricating oil is generally supplied for the purpose of preventing abrasion of components in the expander, and lubricating oil must be supplied on the route of the high-pressure working fluid, The high pressure oil pump should be used or the low pressure oil pump should be supplied from the low pressure side of the pump. As a result, the system becomes complicated and the efficiency of the evaporator deteriorates, resulting in an increase in cost.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an organic Rankine cycle system capable of easily supplying lubricant to an inflator through the use of a self- I have to.
According to an aspect of the present invention, there is provided an evaporator comprising: an evaporator for heating and evaporating a working fluid; an expander for generating driving force using a working fluid evaporated in the evaporator; a condenser for condensing the working fluid discharged from the expander; And a circulation pump for pressurizing the working fluid condensed by the condenser and returning the working fluid to the evaporator, wherein the one side is connected to the evaporator side, the other side is connected to the inflator side, A refueling section in which a high-pressure region and a low-pressure region are formed by setting the distribution differently according to the location; And a lubricant storage tank connected to the high pressure region of the lubricant supply portion through a first flow path and connected to the low pressure region of the lubricant supply portion through a second flow path and storing lubricant oil, And the lubricating oil stored in the lubricating oil storage tank is supplied to the low pressure region having a low internal pressure of the lubricating portion through the second flow path.
According to the present invention, the refueling portion includes a pipe portion including an inlet portion having one side connected to the evaporator side and a discharge portion having the other side connected to the inflator side, and between the inlet portion and the discharge portion of the pipe portion, Pressure region formed on the inlet portion side and the low-pressure region formed on the discharge portion side with respect to the blocking portion as a reference, and a first portion connected to the lubricant storage tank, A flow path and a second flow path are provided.
According to the present invention, there is further provided an oil separator between the inflator and the condenser, which separates the lubricating oil from the working fluid discharged from the inflator and recovers the lubricating oil to the lubricating oil storage tank.
According to the present invention, the first opening and closing valve for selectively opening and closing the respective flow paths is provided in the first flow path and the second flow path, and the return line between the oil separator and the lubricant storage tank is selectively opened and closed A second on-off valve is provided.
According to the present invention, the oil separator is disposed at a position higher than the position of the lubricant storage tank so that the lubricant separated from the oil separator can be recovered to the lubricant storage tank by gravity.
According to the present invention, a low-pressure pump is provided in the recovery line so that the lubricating oil separated from the oil separator can be recovered to the lubricating oil storage tank.
According to the organic Rankine cycle system of the present invention having the above-described structure, lubricating oil can be easily supplied to the inflator using only the self-pressure of the working fluid flowing from the evaporator without a separate driving source.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the flow of a working fluid and lubricant in an organic Rankine cycle system according to the present invention; FIG.
2 is a perspective view showing an oil feed unit of the organic Rankine cycle system according to the present invention.
3 is a view showing the results of the analysis of the pressure gradient of the fuel supply portion according to the present invention.
4 is a configuration diagram showing the flow of working fluid and lubricant in the organic Rankine cycle system according to another embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 4. FIG.
1, an organic Rankine cycle system according to the present invention includes an
Referring to FIG. 1, there is shown an
The rotary driving force of the
As shown in Figure 1, in the organic Rankine cycle system according to the present invention, the
According to an embodiment of the present invention, a lubricating oil supply device is provided between the lubricating
The
The
2, according to the embodiment of the present invention, the
The inside of the
As shown in FIG. 3, the
A
Accordingly, the
The
Accordingly, since the speed of the fluid in the
The lubricating oil supplied to the
The lubricant separated by the
As shown in FIG. 4, the
When the
On the other hand, when the amount of lubricating oil stored in the lubricating
Therefore, the organic Rankine cycle system according to the present invention can supply the lubricant to the
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It should be understood that various modifications made by the person skilled in the art are also within the scope of protection of the present invention.
10: feeding part 11: piping part
12: inlet portion 13: outlet portion
14: breaking portion 15: first flow path
16: second flow path 17: first opening / closing valve
20: second opening / closing valve
Claims (6)
A supply section having one side connected to the evaporator side, the other side connected to the inflator side, and a high pressure area and a low pressure area formed by setting an internal pressure distribution according to a position; And
And a lubricant storage tank connected to the high pressure region of the lubricant supply portion through a first flow path and connected to the low pressure region of the lubricant supply portion through a second flow path,
The back pressure of the working fluid flowing into the lubricant storage tank through the first flow path acts to supply the lubricating oil stored in the lubricant storage tank to the low pressure region having a low inner pressure of the lubricant supply portion through the second flow path. Organic Rankine Cycle System.
Wherein the refueling portion includes a piping portion including an inlet portion having one side connected to the evaporator side and a discharge portion having the other side connected to the inflator side,
A blocking portion for partially blocking the flow path of the piping portion and generating a pressure gradient in the piping portion is provided between the inlet portion and the discharge portion of the piping portion,
Wherein a first flow path and a second flow path are provided in the high pressure region formed toward the inlet portion and the low pressure region formed toward the discharge portion with respect to the blocking portion, respectively, the first and second flow paths being connected to the lubricant storage tank.
Further comprising an oil separator between the expansion unit and the condenser for separating the lubricating oil from the working fluid discharged from the inflator and recovering the lubricating oil into the lubricating oil storage tank.
Wherein the first flow path and the second flow path are provided with a first opening / closing valve for selectively opening and closing each flow path,
And a second on-off valve for selectively opening and closing the recovery line is installed on the recovery line between the oil separator and the lubricant storage tank.
Wherein the oil separator is disposed at a position higher than a position of the lubricant storage tank so that the lubricant separated from the oil separator can be recovered to the lubricant storage tank by gravity.
And the low-pressure pump is provided in the recovery line so that the lubricating oil separated in the oil separator can be recovered to the lubricating oil storage tank.
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KR1020150087609A KR101614928B1 (en) | 2015-06-19 | 2015-06-19 | Organic rankine cycle system |
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KR1020150087609A KR101614928B1 (en) | 2015-06-19 | 2015-06-19 | Organic rankine cycle system |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101836729B1 (en) * | 2016-10-24 | 2018-03-08 | 현대자동차주식회사 | Lubricating oil regenration apparatus and method |
KR101869161B1 (en) * | 2016-10-12 | 2018-06-19 | 한국수력원자력 주식회사 | Recovery system of Turbine lubricating oil |
CN108733932A (en) * | 2018-05-24 | 2018-11-02 | 奥克斯空调股份有限公司 | Circuit design method and apparatus |
Citations (3)
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JP2012127231A (en) | 2010-12-14 | 2012-07-05 | Kobe Steel Ltd | Rankine cycle system and power generation system |
JP2013108439A (en) | 2011-11-21 | 2013-06-06 | Kobe Steel Ltd | Apparatus for utilizing thermal energy and operating method thereof |
JP2014001667A (en) | 2012-06-18 | 2014-01-09 | Nippon Soken Inc | Rankine cycle device |
-
2015
- 2015-06-19 KR KR1020150087609A patent/KR101614928B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012127231A (en) | 2010-12-14 | 2012-07-05 | Kobe Steel Ltd | Rankine cycle system and power generation system |
JP2013108439A (en) | 2011-11-21 | 2013-06-06 | Kobe Steel Ltd | Apparatus for utilizing thermal energy and operating method thereof |
JP2014001667A (en) | 2012-06-18 | 2014-01-09 | Nippon Soken Inc | Rankine cycle device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101869161B1 (en) * | 2016-10-12 | 2018-06-19 | 한국수력원자력 주식회사 | Recovery system of Turbine lubricating oil |
KR101836729B1 (en) * | 2016-10-24 | 2018-03-08 | 현대자동차주식회사 | Lubricating oil regenration apparatus and method |
US10407643B2 (en) | 2016-10-24 | 2019-09-10 | Hyundai Motor Company | Apparatus and method for regenerating lubricating oil |
CN108733932A (en) * | 2018-05-24 | 2018-11-02 | 奥克斯空调股份有限公司 | Circuit design method and apparatus |
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