CN208816195U - A kind of double pressure ORC electricity generation systems - Google Patents
A kind of double pressure ORC electricity generation systems Download PDFInfo
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- CN208816195U CN208816195U CN201821464040.1U CN201821464040U CN208816195U CN 208816195 U CN208816195 U CN 208816195U CN 201821464040 U CN201821464040 U CN 201821464040U CN 208816195 U CN208816195 U CN 208816195U
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Abstract
The utility model discloses a kind of double pressure ORC electricity generation systems, it includes taking hot systems, hiigh pressure stage electricity generation system and low-pressure stage electricity generation system, hiigh pressure stage electricity generation system includes circuiting sequentially connection high pressure pre-heater by high-pressure working medium pipeline, high pressure evaporator, high pressure expansion machine and high pressure condenser, generator I is connected on high pressure expansion machine, it the water inlet of high pressure evaporator and takes and is connected with heating agent waterpipe between hot systems, the heating agent water outlet pipe of high pressure evaporator is divided into two-way, enter the heating agent water inlet of high pressure pre-heater all the way, another way enters low-pressure stage electricity generation system, it the water outlet of high pressure pre-heater and takes and is connected with heat medium water outlet conduit between hot systems, low-pressure stage electricity generation system includes the heat exchanger that connection is circuited sequentially by low pressure working fluid pipeline, low-pressure expander and low-pressure condenser, generator II is connected on low-pressure expander , it is connected to exchanger heat water inlet from the heat medium water of hiigh pressure stage electricity generation system, heat exchanger water outlet is connected to by the road takes hot systems.
Description
Technical field
The utility model relates to a kind of double pressure ORC electricity generation systems, belong to cogeneration technology field.
Background technique
ORC(Organic Rankine Cycle) generation technology is widely used in middle low-temperature heat source recycling field, there is high efficiency, low
It is great to improve Significance for Environment for optimizing current energy resource structure for the advantages such as cost, environmentally friendly.For traditional single pressure ORC hair
Electric system, system thermal efficiency reaches highest under optimal evaporation pressure, but takes the heat source fluid temperature after heat higher, and heat source does not have
It is fully utilized, to cause energy loss.
Summary of the invention
The purpose of this utility model is to provide a kind of double pressure ORC electricity generation systems, can reduce the discharge temperature of heat source, can be more
The energy is made full use of, system generating efficiency is improved.
The utility model adopts the following technical solution: a kind of double pressure ORC electricity generation systems comprising take hot systems, hiigh pressure stage
Electricity generation system and low-pressure stage electricity generation system, take hot systems to be equipped with inlet and outlet, and hiigh pressure stage electricity generation system includes passing through
High-pressure working medium pipeline circuits sequentially connection high pressure pre-heater, high pressure evaporator, high pressure expansion machine, high pressure condenser and high-pressure working medium
Pump, is connected with generator I on high pressure expansion machine, the water outlet of high pressure evaporator by pipeline with take hot systems water inlet to connect,
The heating agent water exit conduit of high pressure evaporator is divided into two-way, enters all the way into the heating agent water inlet of high pressure pre-heater, another way
Low-pressure stage electricity generation system, the water outlet of high pressure pre-heater by pipeline with take hot systems water inlet to connect, low-pressure stage electricity generation system
Heat exchanger, low-pressure expander, low-pressure condenser and low pressure working fluid pump including circuiting sequentially connection by low pressure working fluid pipeline are low
It is connected with generator II on compression swelling device, is connected by the heat medium water that hiigh pressure stage electricity generation system enters low-pressure stage electricity generation system by pipeline
It connects and is connect with the hot water inlet of heat exchanger, the water outlet of heat exchanger is connect by pipeline with hot systems water inlet is taken, the high pressure
It is equipped with cooler I in grade electricity generation system, the water outlet of hot systems is taken to connect by pipeline with the hot water inlet of cooler I, it is cooling
The hot water outlet of device I is connect by pipeline with the water inlet of hot systems is taken, and cooler II is equipped in the low-pressure stage electricity generation system,
Take the water outlets of hot systems connect by pipeline with the hot water inlet of cooler II, the hot water outlet of cooler II pass through pipeline and
The water inlet of hot systems is taken to connect.
The heat medium water into low-pressure stage electricity generation system is the heat medium water between high pressure evaporator and high pressure pre-heater
It is picked out on pipeline.
The regulating valve that be respectively equipped with aperture opposite on the heating agent water inlet of the high pressure evaporator and bypass, high pressure expansion machine
Setting bypass, and high pressure expansion machine bypass is equipped with automatic switch valve；On the heating agent water inlet of the heat exchanger and bypass respectively
Equipped with the opposite regulating valve of aperture, low-pressure expansion machine setting bypass, and the bypass of low-pressure expansion machine is equipped with automatic switch valve.
The heat exchanger is unitized exchanger, and unitized exchanger is existed by the low pressure preheater (LPP and setting that lower part is arranged in
The low pressure evaporator on top shares a shell combination and forms.
It is from high pressure evaporator and high pressure pre-heater by the heat medium water that hiigh pressure stage electricity generation system enters low-pressure stage electricity generation system
Between heating agent waterpipe on pick out.
The heat medium water water outlet of the high and low electricity generation system of arbitrarily downgrading is merged into all the way, is passed into after hot water circulating pump and is taken heat
System.The beneficial effects of the utility model are: the workflow of the double pressure ORC electricity generation system heat source sides of the utility model: taking hot system
The high-temperature hot fluid of system first flows through high pressure evaporator and organic working medium exchanges heat.High pressure evaporator outlet fluid point under nominal situation
Two-way: hot fluid circulation pump inlet pipeline is returned to after high pressure pre-heater preheats organic working medium all the way；Another way enters low pressure
Electricity generation system.The workflow of double pressure ORC electricity generation system organic working medium sides is as follows: hiigh pressure stage and the organic work of low-pressure stage electricity generation system
Matter side is independent of one another, and organic working medium is preheated in high pressure pre-heater in hiigh pressure stage electricity generation system, high in high pressure evaporator
Warm fluid heating, generates high pressure steam driving high pressure expansion machine generating set power generation, and lack of gas pass through working medium after condenser condenses
Pump pressurization returns to high pressure pre-heater and completes circulation；Organic working medium first preheats in heat exchanger in low-pressure stage electricity generation system evaporates afterwards,
Low-pressure steam driving low-pressure expansion machine generating set power generation is generated, lack of gas return to after condenser condenses by working medium pump pressurization low
Preheater is pressed to complete circulation.
The double pressure ORC electricity generation systems of the utility model are additionally contemplates that under fault condition that system is able to achieve automatic control.Work as high pressure
When evaporator pressure reaches alarming value, the inlet valve of cooler I is opened, and high pressure evaporator heat medium water by-pass switch valve is also opened,
Guarantee that a part of hot fluid directly returns to circulation line after cooler I is cooling in this way, another part hot fluid enters low pressure hair
Electric system power generation.Into the heat medium water of low-voltage power generating system, directly through heat exchanger, (low pressure evaporator and low pressure preheater (LPP close two
For one), heating organic working medium generates low-pressure steam and is sent into low pressure turbine power generation, final fluid after cooling returns to hot water circulating pump
After pressurization, returns to and take hot systems.In order to guarantee the even running of technique master device, when low pressure evaporator pressure reaches alarming value
When, the imported valve of cooler II is opened, heat medium water pressurizes through hot water circulating pump after cooling, returns to and take hot systems.
Double pressure ORC electricity generation systems described in the utility model, can significantly improve the heat source occurred in existing ORC electricity generation system
Heat be unable to fully be utilized and cause the defect of energy loss, realize the classified utilization of energy, high and low grade electricity generation system
Different optimal evaporation pressure is chosen respectively, and generated energy highest, the temperature of heat source discharge system is lower at this time, the utilization rate of heat source
It is higher.It is controlled moreover, the system is provided with more perfect safety interlocking, improves the degree of automation of system, to greatest extent
The safety and stability reliability service that ensure that electricity generation system.
Detailed description of the invention
Fig. 1 is flow chart (not showing cooler II in figure) under double pressure ORC electricity generation system nominal situations；
Fig. 2 is that flow chart (only shows cooler under double pressure ORC electricity generation system hiigh pressure stage electricity generation system fault conditions in figure
I)；
Fig. 3 is that flow chart (only shows cooler under double pressure ORC electricity generation system low-pressure stage electricity generation system fault conditions in figure
II).
In figure, 1. high pressure pre-heaters, 2. high pressure evaporators, 3. high pressure expansion machines, 4. generators I, 5. high pressure condensers,
6. high-pressure working medium pumps, 7. heat exchangers, 8. low-pressure expansion machines, 9. generators II, 10. low-pressure condensers, 11. low pressure working fluids pump,
12. hot water circulating pump, 13. coolers I, 14. coolers II.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
The system diagram of double pressure ORC electricity generation systems of the present embodiment is as shown in Figure 1 to Figure 3, double pressure ORC power generation of the present embodiment
System, including hot systems, hiigh pressure stage electricity generation system and low-pressure stage electricity generation system are taken, take hot systems to be equipped with water inlet and water outlet
Mouthful, hiigh pressure stage electricity generation system includes that connection high pressure pre-heater 1, high pressure evaporator 2, high pressure are circuited sequentially by high-pressure working medium pipeline
Expanding machine 3, high pressure condenser 5 and high-pressure working medium pump 6, and generator I 4 is connected on high pressure expansion machine 3, and high pressure evaporator 2 goes out
The mouth of a river by pipeline with take hot systems water inlet to connect, the heating agent water exit conduit of high pressure evaporator 2 is divided into two-way, enters all the way
The heating agent water inlet of high pressure pre-heater 1, another way enter low-pressure stage electricity generation system, and the water outlet of high pressure pre-heater 1 passes through pipeline
With take hot systems water inlet to connect, low-pressure stage electricity generation system include the heat exchanger 7 that connection is circuited sequentially by low pressure working fluid pipeline,
Low-pressure expander 8, low-pressure condenser 10 and low pressure working fluid pump 11, generator II 9 are connected on low-pressure expander 10, by hiigh pressure stage
The heat medium water that electricity generation system enters low-pressure stage electricity generation system is connected by pipeline to be connect with the hot water inlet of heat exchanger 7, heat exchanger 7
Water outlet connect with hot systems water inlet is taken by pipeline, equipped with cooler I 13 in the hiigh pressure stage electricity generation system, take hot system
The water outlet of system is connect by pipeline with the hot water inlet of cooler I 13, and the hot water outlet of cooler I 13 by pipeline and takes heat
The water inlet of system connects, and cooler II 14 is equipped in the low-pressure stage electricity generation system, the water outlet of hot systems is taken to pass through pipeline
It is connect with the hot water inlet of cooler II 14, the hot water outlet of cooler II 14 by pipeline and takes the water inlet of hot systems to connect
It connects.
The heat medium water into low-pressure stage electricity generation system is the heating agent between high pressure evaporator 2 and high pressure pre-heater 1
It is picked out on waterpipe.
The regulating valve that be respectively equipped with aperture opposite on the heating agent water inlet of the high pressure evaporator 2 and bypass, high compression swelling
The setting bypass of machine 3, and the bypass of high pressure expansion machine 3 is equipped with automatic switch valve；On the heating agent water inlet and bypass of the heat exchanger 7
It is respectively equipped with the opposite regulating valve of aperture, the setting bypass of low-pressure expansion machine 8, and the bypass of low-pressure expansion machine 8 is equipped with and opens automatically
Close valve.
In the present embodiment, the heat exchanger 7 is unitized exchanger, and unitized exchanger is pre- by the low pressure that lower part is arranged in
Hot device and the low pressure evaporator that top is arranged in share a shell combination and form.Low-pressure stage hair is entered by hiigh pressure stage electricity generation system
The heat medium water of electric system is picked out on heating agent waterpipe between high pressure evaporator 2 and high pressure pre-heater 1.The high and low pressure
The heat medium water water outlet of grade electricity generation system is merged into all the way, is passed into after hot water circulating pump 12 and is taken hot systems.
The system heat medium water effluent journey of the present embodiment:
125 DEG C of high-temperature-hot-waters after taking hot systems to take heat first flow through high pressure evaporator 2 and organic working medium exchanges heat, high pressure
Organic working medium is generated steam feeding high pressure expansion machine 3 and generator I 4 is driven to generate electricity, under nominal situation by thermal evaporation in evaporator 2
High pressure evaporator 2 goes out moisture two-way: entering after high pressure pre-heater 1 preheats organic working medium back to hot water circulating pump 12 take all the way
Hot systems；Another way enters low-voltage power generating system.One regulating valve of the outlet of high pressure pre-heater 1 setting, by adjusting hot water flow,
Guarantee its leaving water temperature at 63 DEG C or so.Hot water into low-voltage power generating system flows through heat exchanger 7, and hot water returns to heat after cooling
The water inlet manifold of water-circulating pump 12.
2 hot water inlet of high pressure evaporator and bypass regulating valve is respectively set, two control valve openings on the contrary, by adjust into
Enter the hot water flow of high pressure evaporator 2, guarantees 2 pressure of high pressure evaporator in 1.26MPa or so.When 2 pressure of high pressure evaporator reaches
When to alarming value, high pressure evaporator 2 is imported and exported switch valve and is closed, and 3 bypass valve of high pressure expansion machine is opened, and high-pressure working medium gas is subtracted
High pressure condenser 5 is directly discharged into after pressure, the hot water inlet and cooling medium inlet valve of cooler I 13 are opened, 2 heat of high pressure evaporator
Water by-pass switch valve is also opened.Hot water a part of so directly returns to the water inlet of hot water circulating pump 12 after cooler I 13 is cooling
General pipeline, another part hot water enter low-voltage power generating system power generation.
Regulating valve is respectively set in 7 hot water inlet of heat exchanger and bypass, and two control valve openings are opposite.It is changed by adjusting to enter
The hot water flow of hot device 7 guarantees 7 pressure of heat exchanger in 0.75MPa or so.When 7 pressure of heat exchanger reaches alarming value, import
Switch valve is closed, and 8 bypass valve of low-pressure expansion machine is opened, and low-pressure condenser 10 will be directly discharged into after low pressure working fluid gas decompression, cold
But the hot water inlet of device II 14 and cooling medium inlet valve are opened, and will be sent after hot water cooling to hot water circulating pump water inlet manifold.
Organic working medium effluent journey:
High pressure evaporator 2 generates 1.26MPa steam and enters the drive power generation of generator I 4 of high pressure expansion machine 3, the steaming after workmanship
Gas enters high pressure condenser 5 and cooling medium heat exchange is cooled to liquid.Organic working medium after liquefaction is forced by high-pressure working medium pump 6
1.46MPa is preheated to 90 DEG C through high pressure pre-heater 1, is re-fed into high pressure evaporator 2 and generates 1.26MPa steam completion circulation.
Heat exchanger 7, which generates 0.75MPa steam and enters low-pressure expansion machine 8, drives generator II 9 to generate electricity, the steam after workmanship into
Enter low-pressure condenser 10 and cooling medium heat exchange is cooled to liquid.Organic working medium after liquefaction is forced by low pressure working fluid pump 11
0.95MPa is sent into heat exchanger 7 and generates 0.75MPa steam completion circulation.
Total generated output not only reduces the low low-pressure steam of technique master device up to 1289kW when system normal operation
The dosage of discharge and recirculated water, has recycled the waste heat of process unit, has also reduced energy consumption and produce electric energy, in the same of energy-saving and emission-reduction
When also create considerable economic benefit.Using double pressure ORC electricity generation systems described in the utility model, electric energy is not only created,
The energy consumption of technique master device is also reduced, making full use of for the energy is realized and is promoted with the grade of energy.
Certain factory carries out heat exchange as the steam after heating agent, with process gas and high temperature condensate flash using desalted water,
The Low Temperature Thermal of removal process, heat medium water ~ 300t/h are heated to ~ 125 DEG C, to reduce low low-pressure steam discharge and recirculated water
Dosage.
It should be noted that specific implementation citing described above is only used for explaining the utility model.It is not used to limit
Determine the utility model.
Although being expounded above in conjunction with example to the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, above-mentioned embodiment are only adaptability.Those skilled in the art is not departing under the enlightenment of the utility model
Under ambit required by the objective and rights protection of the utility model, many forms can also be made, are belonged to practical
Within novel protection scope.
Claims (5)
1. a kind of double pressure ORC electricity generation systems, it is characterised in that: it includes taking hot systems, hiigh pressure stage electricity generation system and low-pressure stage hair
Electric system, takes hot systems to be equipped with inlet and outlet, and hiigh pressure stage electricity generation system includes successively being followed by high-pressure working medium pipeline
Ring connects high pressure pre-heater (1), high pressure evaporator (2), high pressure expansion machine (3), high pressure condenser (5) and high-pressure working medium pump (6),
Generator I (4) is connected on high pressure expansion machine (3), the water outlet of high pressure evaporator (2) by pipeline and takes hot systems water inlet
Connection, the heating agent water exit conduit of high pressure evaporator (2) is divided into two-way, all the way into high pressure pre-heater (1) heating agent water inlet,
Another way enters low-pressure stage electricity generation system, the water outlet of high pressure pre-heater (1) by pipeline with take hot systems water inlet to connect, it is low
Electricity generation system of arbitrarily downgrading includes the heat exchanger (7) that connection is circuited sequentially by low pressure working fluid pipeline, low-pressure expansion machine (8), low pressure cold
Condenser (10) and low pressure working fluid pump (11), low-pressure expansion machine is connected with generator II (9) on (8), by hiigh pressure stage electricity generation system into
The heat medium water for entering low-pressure stage electricity generation system is connected by pipeline to be connect with the hot water inlet of heat exchanger (7), the water outlet of heat exchanger (7)
Mouth is connect by pipeline with hot systems water inlet is taken, and cooler I (13) is equipped in the hiigh pressure stage electricity generation system, takes hot systems
Water outlet is connect by pipeline with the hot water inlet of cooler I (13), and the hot water outlet of cooler I (13) by pipeline and takes heat
The water inlet of system connects, and cooler II (14) is equipped in the low-pressure stage electricity generation system, the water outlet of hot systems is taken to pass through pipe
Road is connect with the hot water inlet of cooler II (14), and the hot water outlet of cooler II (14) passes through pipeline and the water inlet for taking hot systems
Mouth connection.
2. double pressure ORC electricity generation systems according to claim 1, it is characterised in that: the heat medium water of the high pressure evaporator (2)
The regulating valve that be respectively equipped with aperture opposite in import and bypass, high pressure expansion machine (3) setting bypass, and high pressure expansion machine (3) is other
Road is equipped with automatic switch valve；The regulating valve that be respectively equipped with aperture opposite on the heating agent water inlet of the heat exchanger (7) and bypass,
Low-pressure expansion machine (8) setting bypass, and the bypass of low-pressure expansion machine (8) is equipped with automatic switch valve.
3. double pressure ORC electricity generation systems according to claim 1, it is characterised in that: the heat exchanger (7) is combined type heat exchange
Device, unitized exchanger share a shell group by the low pressure preheater (LPP of lower part is arranged in and the low pressure evaporator on top is arranged in
It closes.
4. double pressure ORC electricity generation systems according to claim 1, it is characterised in that: enter low pressure by hiigh pressure stage electricity generation system
The heat medium water of grade electricity generation system is picked out on heating agent waterpipe between high pressure evaporator (2) and high pressure pre-heater (1).
5. double pressure ORC electricity generation systems according to claim 1 or 2 or 3 or 4, it is characterised in that: the high and low hair of arbitrarily downgrading
The heat medium water water outlet of electric system is merged into all the way, is passed into after hot water circulating pump (12) and is taken hot systems.
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| CN201821464040.1U CN208816195U (en) | 2018-09-07 | 2018-09-07 | A kind of double pressure ORC electricity generation systems |
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| CN201821464040.1U CN208816195U (en) | 2018-09-07 | 2018-09-07 | A kind of double pressure ORC electricity generation systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173370A (en) * | 2019-05-07 | 2019-08-27 | 吉林大学 | A kind of internal combustion engine cooling circulation system |
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2018
- 2018-09-07 CN CN201821464040.1U patent/CN208816195U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173370A (en) * | 2019-05-07 | 2019-08-27 | 吉林大学 | A kind of internal combustion engine cooling circulation system |
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