CN110005490A - A kind of ORC electricity generation system of controllable expander inlet working medium temperature overheat - Google Patents
A kind of ORC electricity generation system of controllable expander inlet working medium temperature overheat Download PDFInfo
- Publication number
- CN110005490A CN110005490A CN201810006658.1A CN201810006658A CN110005490A CN 110005490 A CN110005490 A CN 110005490A CN 201810006658 A CN201810006658 A CN 201810006658A CN 110005490 A CN110005490 A CN 110005490A
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- China
- Prior art keywords
- working medium
- temperature
- expanding machine
- pressure sensor
- valve element
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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
- 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
-
- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
-
- 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
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
Abstract
The present invention relates to a kind of ORC electricity generation systems of controllable expander inlet working medium temperature overheat, the system comprises evaporators, gas-liquid separator, expanding machine, generator, condenser, liquid storage device and working medium pump, the system also includes have throttle valve element, pressure sensor and temperature sensor, the pressure sensor and temperature sensor are set between the gas-liquid separator and the temperature control lines of expanding machine connection, the throttle valve element is set to throttle pipe road, the input terminal of the throttling pipeline connects the output end of the working medium pump, the output end of the throttling pipeline is connect with the temperature control lines, the pressure sensor and temperature sensor are located at the throttling pipeline and temperature control lines junction close to the side of the expanding machine, the pressure sensor, temperature sensor and throttle valve element are controlled with system Chip or PLC controller electrical connection.The embodiment of the present invention avoids thermal energy from wasting to a certain degree, so that generating efficiency is higher.
Description
Technical field
The present invention relates to hair low-temperature electricity-generating technical fields, particularly relate to a kind of controllable expander inlet working medium body temperature and spend
ORC (Organic Rankine Cycle, ORC) electricity generation system of heat.
Background technique
The problem of energy shortage, environmental pollution have developed into world wide, energy-saving and emission-reduction reduce energy consumption, improve the energy
Comprehensive utilization ratio is the fundamental way for solving energy problem.At present in the world for utilizing 300 DEG C or less even lower low temperature
Thermal energy, the method generally used are Organic Rankine Cycle (Organic Rankine Cycle, ORC) generation technologies.
By thermodynamics it is found that working medium is in level pressure endothermic process in evaporator, working medium enters steam in liquid form at this time
Device is sent out, after working medium is completely transformed into gaseous state from liquid, since organic working medium and waste heat source still have the temperature difference, working medium be will continue to
Heat is absorbed from waste heat source, working medium is at the state of overheat at this time, it is assumed that the temperature of evaporator exit working medium is at this time
T1, then the degree of superheat is exactly △ T=T1-Ts(TsFor saturation temperature), it is organic inside evaporator in the case where pressure is certain
The saturation temperature of working medium is also certain, if the degree of superheat is excessive, illustrates that organic working medium can be heated to one by evaporator
Very high outlet temperature T1, this indicates that evaporator has enough energy to go heating organic working medium, but having inside evaporator
Machine working medium is but not enough to absorb these heats, it is evident that will lead in this way can waste most.That is, inside evaporator
When organic working medium amount is fewer, in the case where heat source is certain, the temperature of evaporator outlet organic working medium will necessarily be very high,
I.e. the degree of superheat is very big.In this case, the part energy in evaporator loses in vain, prevent evaporator is from complete
Using waste heat energy, so, the value is too large will cause the waste of energy for the degree of superheat, and it is worthless that system effectiveness, which reduces,.
Summary of the invention
For above-mentioned problems of the prior art, the present invention provides a kind of controllable expander inlet working medium body temperature
The ORC electricity generation system of heat is spent, the system comprises evaporator, gas-liquid separator, expanding machine, generator, condenser, liquid storage devices
And working medium pump, the evaporator, gas-liquid separator, expanding machine, condenser, liquid storage device and working medium pump are sequentially connected by pipeline,
The generator is connected with the expanding machine；The system also includes having throttle valve element, pressure sensor and temperature sensor,
The pressure sensor and temperature sensor are set between the gas-liquid separator and the temperature control lines of expanding machine connection,
The throttle valve element is set to throttle pipe road, and the input terminal of the throttling pipeline connects the output end of the working medium pump, described
The output end of throttling pipeline is connect with the temperature control lines, and the pressure sensor and temperature sensor are located at the throttling
Pipeline and temperature control lines junction are close to the side of the expanding machine, the pressure sensor, temperature sensor and described
Throttle valve element is electrically connected with system control chip or PLC controller.
Optionally, the throttle valve element is direct-acting electromagnetic valve or distribution direct-acting electromagnetic valve.
Optionally, temperature sensor type is thermocouple, platinum resistance, thermistor or heating power expansion valve temperature sensing packet.
Optionally, the pressure sensor types are diffusion silicon, condenser type, silicon on sapphire, ceramic thick film or metal strain
Piece.
Optionally, the expanding machine pattern is vortex, screw, radial inflow, rotator type or piston type.
One technical solution of above-mentioned technical proposal have the following advantages that or the utility model has the advantages that
In one embodiment of the invention, when pressure sensor and temperature sensor detect expander inlet organic working medium gas
When the body degree of superheat is excessive, system control chip or PLC controller are to throttle valve element transmission signal instruction, to open throttle pipe road
Throttle valve element, draw a part of organic working medium liquid from the outlet of working medium pump, and the organic working medium liquid of extraction is directly sprayed
Enter the temperature control lines in expander inlet, makes the reduction of its overtemperature with the organic working medium gas mixing of heating, work as pressure
When sensor and temperature sensor detect that expander inlet organic working medium gas superheat degree reduces and reaches setting value, system control
Coremaking piece or PLC controller send signal instruction to throttle valve element again, to close the throttle valve element, to realize to overheat
The temperature of the organic working medium gas of degree controls.The embodiment of the present invention passes through the control to expander inlet organic working medium gas superheat degree
System keeps the utilization of heat source more abundant, avoids waste, and the operation of expanding machine is made to be more nearly organic working medium theoretical circulation
Characteristic, so that generating efficiency is higher.
Detailed description of the invention
Fig. 1 is that a kind of structure of the ORC electricity generation system of controllable expander inlet working medium temperature overheat of the present invention is implemented
It illustrates and is intended to.
Specific embodiment
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
As shown in Figure 1, the embodiment of the invention provides a kind of ORC hairs of controllable expander inlet working medium temperature overheat
Electric system, the system comprises evaporator 1, gas-liquid separator 2, expanding machine 3, generator 4, condenser 5, liquid storage device 6 and working medium
Pump 7, the evaporator 1, gas-liquid separator 2, expanding machine 3, condenser 5, liquid storage device 6 and working medium pump 7 are sequentially connected by pipeline,
The generator 4 is connected with the expanding machine 3；The system also includes have throttle valve element 8, pressure sensor 9 and temperature to pass
Sensor 10, the pressure sensor 9 and temperature sensor 10 are set to the temperature that the gas-liquid separator 2 and expanding machine 3 connect
Between control piper, the throttle valve element 8 is set to throttle pipe road, and the input terminal of the throttling pipeline connects the working medium pump
The output end of 7 output end, the throttling pipeline is connect with the temperature control lines, and the pressure sensor 9 and temperature pass
Sensor 10 is located at the side of the throttling pipeline and the closely described expanding machine 3 in temperature control lines junction, the pressure sensor
9, temperature sensor 10 and the throttle valve element 8 are electrically connected with system control chip or PLC controller (not shown).
The main operational principle of the embodiment of the present invention is as follows: low-boiling organic working medium enters in evaporator 1, from heat source
Thermal energy is obtained at (industrial exhaust heat, geothermal energy, solar energy, biomass energy and ocean energy), so that organic working medium be made to absorb acquisition
Thermal energy, and then the steam with certain pressure and temperature is generated, the steam of generation is after gas-liquid separator 2, it is ensured that steam is not
Band liquid enters 3 expansion work of expanding machine, makes expanding machine 3 that generator 4 be driven to generate electricity, after the decompression cooling that expanding machine 3 is discharged
Organic working medium heat is taken away and is condensed by cooling medium in condenser 5 by steam, and condensed organic working medium enters storage
Liquid device 6 comes back to evaporator 1 after finally pressurizeing again by working medium pump 7, so constantly recycles, to realize using lower
The purpose of temperature thermal energy power generation.It should be noted that the cooling medium in the condenser 5 includes but is not limited to water body or sky
Gas, such as condenser connect water tower, condense using water source as cooling medium to organic working medium.
In the present embodiment, realize that the technology contents of control expander inlet working medium temperature overheat are as follows:
The pressure sensor 9 and temperature sensor 10 of temperature control zone road setting are respectively in real time to 3 entrance of expanding machine
The temperature and pressure of organic working medium gas is detected, and the overheat degree of expander inlet is calculated using detection pressure and temperature
It is worth size, and is compared with the degree of superheat numerical value of system control program setting, when the organic working medium gas for entering 3 entrance of expanding machine
When the temperature overheating of body, i.e. the degree of superheat of testing result has been greater than preset degree of superheat setting value, system control chip or PLC control
Device processed sends signal instruction to throttle valve element 8, and the throttle valve element 8 adjusts aperture according to signal instruction, working medium pump 7 is exported
A part of organic working medium liquid by throttle pipeline be delivered to throttling pipeline and temperature control lines junction, and with heating
Organic working medium gas mixing is reduced its overtemperature, when pressure sensor 9 and temperature sensor 10 detect expanding machine 3
When entrance organic working medium gas superheat degree is reduced to setting value, then signal instruction is sent to throttle valve element 8 again, with adjustment
The aperture of the throttle valve element 8 controls the temperature of the organic working medium gas of the degree of superheat to realize.System control chip or
The position of PLC controller is configured according to entire electricity generation system each unit, the layout design of component, utmostly guarantees power generation
The stability of system temperature control.
The embodiment of the present invention makes the utilization of heat source more by the control to 3 entrance organic working medium gas superheat degree of expanding machine
Add sufficiently, avoid waste, and the operation of expanding machine 3 is made to be more nearly organic working medium theoretical circulation characteristic, so that power generation effect
Rate is higher.
Optionally, the throttle valve element 8 is direct-acting electromagnetic valve or distribution direct-acting electromagnetic valve.
Optionally, 10 type of temperature sensor is thermocouple, platinum resistance, thermistor or heating power expansion valve temperature sensing
Packet.
Optionally, 9 type of pressure sensor is diffusion silicon, condenser type, silicon on sapphire, ceramic thick film or metal strain
Piece.
Optionally, 3 pattern of expanding machine is vortex, screw, radial inflow, rotator type or piston type.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of ORC electricity generation system of controllable expander inlet working medium temperature overheat, which is characterized in that the system comprises
Evaporator, gas-liquid separator, expanding machine, generator, condenser, liquid storage device and working medium pump, the evaporator, gas-liquid separator,
Expanding machine, condenser, liquid storage device and working medium pump are sequentially connected by pipeline, and the generator is connected with the expanding machine；Institute
The system of stating further includes having throttle valve element, pressure sensor and temperature sensor, the pressure sensor and temperature sensor setting
Between the temperature control lines that the gas-liquid separator and expanding machine connect, the throttle valve element is set to throttle pipe road,
The input terminal of the throttling pipeline connects the output end of the working medium pump, and the output end of the throttling pipeline and the temperature control
Piping connection, the pressure sensor and temperature sensor are located at the throttling pipeline and temperature control lines junction close to institute
The side of expanding machine is stated, the pressure sensor, temperature sensor and the throttle valve element are controlled with system control chip or PLC
Device electrical connection processed.
2. the ORC electricity generation system of controllable expander inlet working medium temperature overheat according to claim 1, feature exist
In the throttle valve element is direct-acting electromagnetic valve or distribution direct-acting electromagnetic valve.
3. the ORC electricity generation system of controllable expander inlet working medium temperature overheat according to claim 1, feature exist
In the temperature sensor type is thermocouple, platinum resistance, thermistor or heating power expansion valve temperature sensing packet.
4. the ORC electricity generation system of controllable expander inlet working medium temperature overheat according to claim 1, feature exist
In the pressure sensor types are diffusion silicon, condenser type, silicon on sapphire, ceramic thick film or metal strain plate.
5. the ORC electricity generation system of controllable expander inlet working medium temperature overheat according to claim 1, feature exist
In the expanding machine pattern is vortex, screw, radial inflow, rotator type or piston type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006658.1A CN110005490A (en) | 2018-01-04 | 2018-01-04 | A kind of ORC electricity generation system of controllable expander inlet working medium temperature overheat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006658.1A CN110005490A (en) | 2018-01-04 | 2018-01-04 | A kind of ORC electricity generation system of controllable expander inlet working medium temperature overheat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005490A true CN110005490A (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006658.1A Pending CN110005490A (en) | 2018-01-04 | 2018-01-04 | A kind of ORC electricity generation system of controllable expander inlet working medium temperature overheat |
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| CN (1) | CN110005490A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030790A (en) * | 2022-08-10 | 2022-09-09 | 中国核动力研究设计院 | Brayton cycle system and control method thereof |
-
2018
- 2018-01-04 CN CN201810006658.1A patent/CN110005490A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030790A (en) * | 2022-08-10 | 2022-09-09 | 中国核动力研究设计院 | Brayton cycle system and control method thereof |
| CN115030790B (en) * | 2022-08-10 | 2022-10-25 | 中国核动力研究设计院 | Brayton cycle system and control method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190712 |
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| WD01 | Invention patent application deemed withdrawn after publication |