CN107013270A - A kind of dynamic adjustable organic rankine cycle system of working medium charging amount - Google Patents
A kind of dynamic adjustable organic rankine cycle system of working medium charging amount Download PDFInfo
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- CN107013270A CN107013270A CN201710333493.4A CN201710333493A CN107013270A CN 107013270 A CN107013270 A CN 107013270A CN 201710333493 A CN201710333493 A CN 201710333493A CN 107013270 A CN107013270 A CN 107013270A
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- China
- Prior art keywords
- working medium
- storage tank
- pipeline
- organic rankine
- rankine cycle
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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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
Abstract
The present invention relates to a kind of dynamic adjustable organic rankine cycle system of working medium charging amount, working medium pump, evaporator, expanding machine and condenser including installing and constituting closed loop working medium loop in a series arrangement by working medium pipeline, it is characterized in that, working medium storage tank is also accessed on working medium pipeline between working medium pump and evaporator, the water bag of variable volume is mounted with the working medium storage tank, the water bag is also sequentially connected water pump and water tank by pipeline.Compared with prior art, being filled with or release in real time for working medium can be achieved by adjusting the pressure differential of working medium storage tank pipeline section corresponding to organic rankine cycle system in the present invention, and easy to adjust to be easily achieved, cost is low, and charge and discharge amount is dynamically adjustable etc..
Description
Technical field
The present invention relates to the power cycle using low grade residual heat as thermal source, dynamically may be used more particularly, to a kind of working medium charging amount
The organic rankine cycle system of tune.
Background technology
With the growth and the raising of environmental requirement of energy demand, the utilization of middle low-temperature heat source especially industrial exhaust heat is more next
More it is taken seriously.Industrial exhaust heat from various industrial furnaces, heat energy power mechanism, heat energy utilization equipment and various has anti-extensively
Answer in thermogenetic production process.According to the temperature counterpart of heat energy, the principle of cascade utilization, existed in some highly energy-consuming trades
Substantial amounts of middle-low temperature heat is not fully used, corresponding also ripe not enough using technology, is badly in need of greatly developing.
Organic Rankine bottoming cycle (Organic Rankine Cycle, ORC) be utilize in low-temperature heat source important technology it
One, the neck such as geothermal energy, middle low-temperature solar energy thermal-arrest, industrial exhaust heat, exhaust heat of internal combustion engine and biomass energy can be efficiently applied to
Domain.From the perspective of technological innovation, because ORC system often replaces water/water vapour to make heat using lower boiling organic working medium
The cycle fluid of Force system, can significantly reduce the final discharge temperature of waste heat, in fully reclaiming and utilizing in residual heat resources
Low grade heat energy, is translated into high-grade mechanical work.So can not only turn waste into wealth, be greatly reduced industrial enterprise to
The purchase of electricity in outside power plant；The thermal pollution that can also effectively alleviate caused by waste gas residual heat directly drains into air simultaneously is asked
Topic.
System operating characteristics under off-design behaviour are the focuses studied instantly for ORC system.Working medium charging amount it is many
The few performance to evaporator, condenser, so influence to whole system performance all can be apparent.Further, since ORC system
Working medium loop is the circulation of a closing, and the online supplement of working medium is often difficult to carry out with extraction and cost is higher, therefore dynamic
Adjust the means and strategy very imperfection of working medium charging amount.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of working medium charging amount is dynamic
The adjustable organic rankine cycle system of state.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of working medium charging amount dynamically adjustable organic rankine cycle system, including pacified in a series arrangement by working medium pipeline
Working medium pump, evaporator, expanding machine and the condenser in closed loop working medium loop are filled and constitute, the working medium between working medium pump and evaporator
Working medium storage tank is also accessed on pipeline, the water bag of variable volume is mounted with the working medium storage tank, the water bag also by pipeline successively
Connect water pump and water tank.
As preferred embodiment, separable joint is provided with the working medium pipeline between working medium pump and evaporator
Working medium charge and discharge control valve, the separable joint also connects the working medium charge and discharge pipeline imported and exported and drawn from working medium storage tank.
As preferred embodiment, in described closed loop working medium loop, the outlet port of evaporator is additionally provided with the first temperature
Sensor and first pressure sensor are spent, the outlet port of condenser also is provided with second temperature sensor and second pressure sensing
Device；
Three-temperature sensor and the 3rd pressure sensor are additionally provided with described working medium storage tank.
As above-mentioned preferred embodiment it is further preferred that described organic rankine cycle system also includes control system,
The control system is divided into Part I, Part II and Part III, wherein, Part I connects and control the expanding machine,
Working medium pump and water pump, Part II receive from the first temperature sensor, first pressure sensor, second temperature sensor, second
The data of pressure sensor, three-temperature sensor and the collection of the 3rd pressure sensor and feedback transmission, Part III is carried can
Shown depending on changing window, and for the data visualization for making Part I and Part II monitor regulation.
As the further preferred of further preferred embodiment, the import and export of described working medium storage tank is additionally provided with electromagnetism
Valve, the magnetic valve connects the Part III by joint, and controls it to be opened and closed by Part III.
As preferred embodiment, safety valve is additionally provided with described working medium storage tank.
The present invention is provided with working medium storage tank, and by under working medium pump in a working medium charge and discharge pipeline and closed loop working medium loop
Trip, the pressure duct of vaporizer upstream are connected, and it limits certain total storage volume, by working medium storage tank with closed loop working medium
Organic working medium is injected in working medium closed loop or extracted back from loop in working medium storage tank by the pressure differential in loop.Working medium charge and discharge
Magnetic valve is housed, when magnetic valve is in an open position, working medium can work as electromagnetism by the working medium charge and discharge tube runs on pipeline
Valve is when closed position, and flowing of the working medium in the working medium charge and discharge pipeline is prevented from.In addition, the working medium charging amount is dynamically adjustable
Organic Rankine bottoming cycle (ORC) system also include controller, in specific implementation process, controller and each valve phase in pipeline
Association, for being located in open position or closed position.
The filling of working medium and extraction process in organic rankine cycle system in the present invention, by adjust working medium storage tank with it is corresponding
The pressure differential of pipeline section is realized.In specific implementation process, when the water in water tank is pumped into the water bag of working medium storage tank by water pump
When interior, the volume of water bag increases and the outer working medium volume of water bag reduces, and the balance pressure in working medium storage tank rises therewith.Work as water pump
When the water of water bag memory storage is pumped in water tank, the volume of water bag reduces and the working medium volume outside water bag expands, working medium storage
Balance pressure in tank declines therewith.
Compared with prior art, the present invention is by setting working medium storage tank, and utilizes the variable elasticity of working medium storage tank inner volume
Water bag can flexibly adjust the pressure size in working medium storage tank, while monitoring what is set in whole system in real time with hop controller
Each valve and sensor, so that flexibly regulation working medium storage tank and the pressure difference in closed loop working medium loop, realizes that closed loop working medium is returned
Working medium charge and discharge amount in road is dynamically adjustable.
Brief description of the drawings
Fig. 1 is working medium charging amount of the invention dynamically adjustable organic rankine cycle system；
In figure, 10- organic rankine cycle systems, 11- evaporators, 12- expanding machines, 13- condensers, 14- working medium pumps, 15a-
Working medium storage tank, 15b- water bags, 16- water pumps, 17- water tanks, 21,22- high-pressure working medium pipelines, 23,24- low pressure working fluid pipelines,
25a- first separates joint, and 25b- second separates joint, 25c- working medium charge and discharge control valves, 31- second temperature sensors,
31a- second temperature dial plates, 32- second pressure sensors, 32a- second pressure dial plates, the temperature sensors of 33- first, 33a-
One temperature dial plate, 34- first pressure sensors, 34a- first pressure dial plates, 35- three-temperature sensors, the temperature of 35a- the 3rd
Dial plate, the pressure sensors of 36- the 3rd, the pressure dial plates of 36a- the 3rd, 37a- Part I, 37b- Part II, 37c- the 3rd
Point, 41- control pipelines, 42a- the 3rd separates joint, and 42b- the 4th separates joint, 43,44- working medium charge and discharge pipelines, 45,
46th, 47- water pipelines, 51- magnetic valves, 52,53- flow control valves, 54- safety valves.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Dynamically adjustable organic Rankine bottoming cycle (ORC) system 10 is included by evaporating a kind of working medium charging amount as shown in Figure 1
Device 11, expanding machine 12, condenser 13, working medium pump 14, and by high-pressure working medium pipeline 21,22, low pressure working fluid pipeline 23,24 groups
Into closed loop organic working medium loop.Liquid refrigerant is exported from working medium pump 14, by high-pressure working medium pipeline 21, into evaporator 11
Fully absorb heat of low-temperature heat source and vaporize.It is swollen that the working substance steam of HTHP enters expanding machine 12 by high-pressure working medium pipeline 22
Swollen output mechanical work.Working medium after expansion is then condensed by high-pressure working medium pipeline 23 into condenser 13, and passes through high pressure work
Matter pipeline 24, which is returned to, completes circulation in working medium pump 14.
The working medium charge and discharge control valve 25c that identical band first separates joint 25a is installed on high-pressure working medium pipeline 21, made
For the volume control device of charge and discharge working medium.When flow control valve 52,53 is opened, during the positive operation of water pump 16, water is from water tank 17
In be filled with water bag 15b (water bag 15b, water pump 16 and water tank 17 are sequentially connected in series by water pipeline 45,46,47), cause
Pressure in working medium storage tank 15a is begun to ramp up.When pressure rises to desired value in working medium storage tank 15a, water pump 16 is stopped,
Flow control valve 52,53 is closed, and water filling process is interrupted, and pressure inside the tank stops rising.Magnetic valve 51 is opened, the first separable joint
25a and second separates joint 25b UNICOMs immediately, opens working medium charge and discharge control valve 25c, working medium charge and discharge pipeline 44 and high pressure work
The UNICOM of matter pipeline 21, system starts to be filled with working medium；During being filled with working medium, the working medium in working medium storage tank 15a is filled by working medium
Pipeline 43,44 is put to enter in system.After enough working medium, the first separable joint 25a and second separates joint 25b
Disconnect, close working medium charge and discharge control valve 25c, working medium charge and discharge pipeline 44 is disconnected with high-pressure working medium pipeline 21, and magnetic valve 51 is closed,
The process that system is filled with working medium terminates.
When flow control valve 52,53 is opened, during 16 inverted running of water pump, water is taken out from working medium storage tank 15a water bag 15b
Go out, return in water tank 17, cause the pressure in working medium storage tank 15a to begin to decline.When pressure inside the tank drops to desired value, water
Pump 16 is stopped, and flow control valve 52,53 is closed, and pump process is interrupted, and pressure inside the tank stops declining.Magnetic valve 51 is opened,
First separable joint 25a and second separates joint 25b UNICOMs immediately, opens working medium charge and discharge control valve 25c, working medium charge and discharge
Pipeline 44 and the UNICOM of high-pressure working medium pipeline 21, system begin paying out working medium；During releasing working medium, in working medium storage tank 15a
Working medium is entered in working medium storage tank 15a by working medium charge and discharge pipeline 44,43.After enough working medium is released, the first separable joint
25a and second separates joint 25b and disconnected, and closes working medium charge and discharge control valve 25c, working medium charge and discharge pipeline 44 and high-pressure working medium pipe
Road 21 is disconnected, and magnetic valve 51 is closed, and the process that system releases working medium terminates.
System is provided with programmable controller, Part I 37a and expanding machine 12, working medium pump 14 and the water pump of controller
16 be connected, as two pumps power supply and control its rotating speed.In order to monitor the working medium degree of superheat and the condensation of the outlet of evaporator 11 in real time
The working medium degree of supercooling that device 13 is exported, the exit of evaporator 11 is provided with the first temperature sensor 31 and first pressure sensor
32, measured value can be directly read from corresponding first temperature dial plate 31a and first pressure dial plate 32a.The exit of condenser 13 is set
Second temperature sensor 33 and second pressure sensor 34 are equipped with, measured value can be pressed from corresponding second temperature dial plate 33a and second
Directly read on power dial plate 34a.Meanwhile, the 3rd pressure sensor 35 and three-temperature sensor are provided with working medium storage tank 15a
36, measured value can be read from corresponding 3rd temperature dial plate 35a and the 3rd pressure dial plate 36a.In addition, on working medium storage tank 15a also
Provided with safety valve 54, when pressure inside the tank is too high, safety valve 54 opens pressure release.The data that above-mentioned sensor is gathered are passed
In the Part II 37b for transporting to controller, state and the situation of change of charging amount for working medium in analysis system.Institute is in need
The data of monitoring and regulation can be shown in the Part III 37c of controller visualization window, while this segment controller is also
Pass through the 3rd separable joint 42a, the 4th separable joint 42b, control pipeline 41 and the magnetic valve 51 of working medium tank 15a porch
Be connected, be that it transmits electric power and controls it to be opened and closed, for controlled medium tank 15a and working medium charge and discharge pipeline 43,44 UNICOM or
Disconnect.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel are according to the announcement of the present invention, and not departing from improvement and modification that scope made all should be the present invention's
Within protection domain.
Claims (6)
1. a kind of working medium charging amount dynamically adjustable organic rankine cycle system, including installed in a series arrangement by working medium pipeline
And constitute working medium pump, evaporator, expanding machine and the condenser in closed loop working medium loop, it is characterised in that in working medium pump and evaporator
Between working medium pipeline on also access working medium storage tank, be mounted with the water bag of variable volume in the working medium storage tank, the water bag also leads to
Cross pipeline and be sequentially connected water pump and water tank.
2. a kind of dynamic adjustable organic rankine cycle system of working medium charging amount according to claim 1, it is characterised in that
The working medium charge and discharge control valve of separable joint is provided with working medium pipeline between working medium pump and evaporator, described separate connects
Head also connects the working medium charge and discharge pipeline imported and exported and drawn from working medium storage tank.
3. a kind of dynamic adjustable organic rankine cycle system of working medium charging amount according to claim 1, it is characterised in that
In described closed loop working medium loop, the outlet port of evaporator is additionally provided with the first temperature sensor and first pressure sensor, cold
The outlet port of condenser also is provided with second temperature sensor and second pressure sensor；
Three-temperature sensor and the 3rd pressure sensor are additionally provided with described working medium storage tank.
4. a kind of dynamic adjustable organic rankine cycle system of working medium charging amount according to claim 3, it is characterised in that
Described organic rankine cycle system also includes control system, and the control system is divided into Part I, Part II and the 3rd
Point, wherein, Part I connects and controls the expanding machine, working medium pump and water pump, and Part II receives from the first TEMP
Device, first pressure sensor, second temperature sensor, second pressure sensor, three-temperature sensor and the 3rd pressure sensing
Device collection and the data of feedback transmission, Part III carry visualization window, and for monitoring Part I and Part II
The data visualization of regulation is shown.
5. a kind of dynamic adjustable organic rankine cycle system of working medium charging amount according to claim 4, it is characterised in that
The import and export of described working medium storage tank is additionally provided with magnetic valve, and the magnetic valve connects the Part III by joint, and by
Three parts control it to be opened and closed.
6. a kind of dynamic adjustable organic rankine cycle system of working medium charging amount according to claim 1, it is characterised in that
Safety valve is additionally provided with described working medium storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710333493.4A CN107013270B (en) | 2017-05-12 | 2017-05-12 | Organic Rankine cycle system with dynamically adjustable working medium charging amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710333493.4A CN107013270B (en) | 2017-05-12 | 2017-05-12 | Organic Rankine cycle system with dynamically adjustable working medium charging amount |
Publications (2)
| Publication Number | Publication Date |
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| CN107013270A true CN107013270A (en) | 2017-08-04 |
| CN107013270B CN107013270B (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710333493.4A Expired - Fee Related CN107013270B (en) | 2017-05-12 | 2017-05-12 | Organic Rankine cycle system with dynamically adjustable working medium charging amount |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763607A (en) * | 2018-03-12 | 2018-11-06 | 同济大学 | A kind of predictor method of organic rankine cycle system working medium charging amount |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073929A (en) * | 1999-09-08 | 2001-03-21 | Ishikawajima Harima Heavy Ind Co Ltd | High viscous fluid supply device |
| CN2431324Y (en) * | 2000-06-22 | 2001-05-23 | 黄金乙 | Air bag type pressure flushing cistern |
| JP2008231981A (en) * | 2007-03-19 | 2008-10-02 | Sanden Corp | Waste heat recovery apparatus for internal combustion engine |
| CN103249938A (en) * | 2010-12-01 | 2013-08-14 | 斯堪尼亚商用车有限公司 | Arrangement and method for converting thermal energy to mechanical energy |
-
2017
- 2017-05-12 CN CN201710333493.4A patent/CN107013270B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073929A (en) * | 1999-09-08 | 2001-03-21 | Ishikawajima Harima Heavy Ind Co Ltd | High viscous fluid supply device |
| CN2431324Y (en) * | 2000-06-22 | 2001-05-23 | 黄金乙 | Air bag type pressure flushing cistern |
| JP2008231981A (en) * | 2007-03-19 | 2008-10-02 | Sanden Corp | Waste heat recovery apparatus for internal combustion engine |
| CN103249938A (en) * | 2010-12-01 | 2013-08-14 | 斯堪尼亚商用车有限公司 | Arrangement and method for converting thermal energy to mechanical energy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763607A (en) * | 2018-03-12 | 2018-11-06 | 同济大学 | A kind of predictor method of organic rankine cycle system working medium charging amount |
| CN108763607B (en) * | 2018-03-12 | 2022-02-18 | 同济大学 | Method for estimating working medium charge of organic Rankine cycle system |
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| Publication number | Publication date |
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| CN107013270B (en) | 2019-12-27 |
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