CN208702471U - Cascade organic Rankine cycle power generation system - Google Patents
Cascade organic Rankine cycle power generation system Download PDFInfo
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- CN208702471U CN208702471U CN201821288525.XU CN201821288525U CN208702471U CN 208702471 U CN208702471 U CN 208702471U CN 201821288525 U CN201821288525 U CN 201821288525U CN 208702471 U CN208702471 U CN 208702471U
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- evaporator
- preheater
- expanding machine
- rankine cycle
- liquid pump
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Abstract
The utility model discloses a kind of Cascade organic Rankine cycle power generation system, including liquid pump, pressure transmitter, the first regulating valve, the first preheater, the first evaporator, the first expanding machine, generator, condenser, the second regulating valve, the second preheater, the second evaporator, the second expanding machine；The generator is double output shaft generator, and generator is separately connected the first expanding machine, the second expanding machine.The utility model uses a working medium pump, and working medium pump is driven by adjustable frequency motor, and PLC passes through the pressure transmitter signal of working medium pump discharge, controls the frequency of adjustable frequency motor to guarantee that the outlet pressure of working medium pump is stablized.PLC controls two flow control valve apertures respectively according to high-temperature evaporator and the respective fluid level transmitter signal of cryogenic vaporizer to realize level stability.The utility model proposes Cascade organic Rankine cycle power generation system, provide power by a liquid pump for two sub- circulatory systems, can effectively save cost.
Description
Technical field
The utility model belongs to cogeneration technology field, and being related to a kind of electricity generation system more particularly to a kind of Cascade has
Machine Rankine cycle electricity generation system.
Background technique
Referring to Fig. 2, Fig. 2 is typical Organic Rankine Cycle (Organic Rankin Cycle, an ORC) system,
Including expanding machine 1 ', generator 2 ', evaporator 3 ', liquid pump 4 ', condenser 5 '.
The liquid refrigerating working medium of low-temp low-pressure is boosted in liquid pump 4 '；It is heated vaporization subsequently into evaporator 3 ',
Until into 1 ' expansion work of expanding machine, driven generator 2 ' generates electricity after becoming overheated gas (high temperature and pressure).It is low after acting
Warm low-pressure gas enters that condenser 5 ' is cooled to condense into liquid；It returns in liquid pump 4 ', completes a circulation.
For Organic Rankine Cycle, the temperature difference between hot fluid and environment temperature is bigger, and the thermal efficiency is higher.However,
Existing organic rankine cycle system, only including one group of Organic Rankine Cycle unit (only includes an expanding machine, a power generation
Machine, an evaporator, a liquid pump, a condenser)；Heat source usually only connects an evaporator, and the thermal efficiency of system is also
Need to be further increased.
Further, since the size of expanding machine has certain limitations, it, will in some systems in order to make full use of the energy of heat source
Several groups Organic Rankine Cycle unit is in parallel, as shown in figure 3, but still without solving the problems, such as that system thermal efficiency is lower.
Then, in order to overcome drawbacks described above, the applicant devises a kind of Cascade Organic Rankine Cycle generation mode, such as
Chinese patent CN2016200112707 discloses a kind of cascade organic Rankine cycle system, comprising: the first ORC subsystem,
2nd ORC subsystem；First ORC subsystem, the 2nd ORC subsystem include evaporator, preheater, liquid pump, condenser, swollen
Swollen machine, generator；The generator is to synchronize or is asynchronous double output shaft electric machines, the first ORC subsystem and corresponding 2nd ORC
Subsystem shares a generator；First ORC subsystem shares the same condenser with corresponding 2nd ORC subsystem；It is organic
Rankine cycle system is using high-temperature hot fluid as heat source, and hot fluid is after the first evaporator, and a part is by the first preheating
Device outflow；Another part enters the 2nd ORC subsystem, and passes sequentially through the second evaporator and second of the 2nd ORC subsystem in advance
Hot device.The utility model proposes cascade organic Rankine cycle system, system thermal efficiency can be greatly improved.Concrete composition can join
Read Fig. 4.However, applicant is in process of production, it is believed that the higher cost of above system affects the wide of its to a certain extent
General application.
In view of this, nowadays there is an urgent need to design a kind of new generation mode, to overcome existing for existing generation mode
Drawbacks described above.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of Cascade organic Rankine cycle power generation systems, can
Effectively save cost.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of Cascade organic Rankine cycle power generation system, the electricity generation system include: PLC system, liquid pump, the first tune
Save valve, the first preheater, the first evaporator, the first expanding machine, generator, condenser, the second regulating valve, the second preheater, the
Two evaporators, the second expanding machine；The generator is double output shaft generator, and generator is separately connected the first expanding machine, second
Expanding machine；
Pressure transmitter is installed, the liquid refrigerating working medium of low-temp low-pressure passes through liquid pump on the liquid pump export pipeline
Pressure inverting after boost；
The pressure transmitter connects the PLC system, and the PLC system is controlled according to pressure transmitter numerical values recited
The frequency for driving the variable-frequency motor of liquid pump, to control the outlet pressure of liquid pump；
First piping connection, first preheater, the first preheater connect the first evaporator；First evaporator connects
The first expanding machine is connect, the acting of the first expander will be delivered to by the overheated gas of gasification, drive double output shaft generator
Power generation；First expanding machine connects condenser, and condenser connects liquid pump；
The first preheating pipeline is equipped in first preheater, one end of the first preheating pipeline connects the first heat exchanging pipe,
The other end exports hot fluid；
First evaporator is equipped with the first heat exchanging pipe, the first fluid level transmitter, and the both ends of the first heat exchanging pipe are distinguished
Equipped with the first thermal fluid inlet, the first hot fluid outlet ports；First thermal fluid inlet is used to access hot fluid；First hot fluid outlet ports
It is connect respectively with the first preheater, the second evaporator；First fluid level transmitter feeds back to PLC system control by liquid level signal
Make the aperture of the first regulating valve；
Second piping connection to the second preheater, the second preheater connects the second evaporator；Second evaporator
The second expanding machine is connected, the acting of the second expander, driving double output shaft power generation will be delivered to by the overheated gas of gasification
Machine power generation；Second expanding machine connects the condenser；
The second preheating pipeline is equipped in second preheater, one end of the second preheating pipeline connects the second heat exchanging pipe,
The other end exports hot fluid；
Second evaporator is equipped with the second heat exchanging pipe, the second fluid level transmitter, and the both ends of the second heat exchanging pipe are distinguished
Equipped with the second thermal fluid inlet, the second hot fluid outlet ports；Second thermal fluid inlet is used to access from the conveying of the first evaporator
Hot fluid；Second hot fluid outlet ports connect the second preheater；Second fluid level transmitter feeds back to PLC system by liquid level signal
System the second regulating valve of control.
As a kind of preferred embodiment of the utility model, the liquid pump includes variable-frequency motor, the variable-frequency motor connection
The inverter drive signal of the PLC system, variable-frequency motor passes through the signal of reading liquid pump discharge pressure transmitter by PLC system
It is controlled.
As a kind of preferred embodiment of the utility model, it can be double pump arranged side by side that the liquid pump, which can be single pump,
It can be more pumps arranged side by side.
As a kind of preferred embodiment of the utility model, the first evaporator liquid level passes through the first fluid level transmitter for liquid
Position signal teletransmission to the PLC system, PLC system controls the first control valve opening according to liquid level signal to obtain stable liquid
Position.
As a kind of preferred embodiment of the utility model, the second evaporator liquid level passes through the second fluid level transmitter for liquid
Position signal teletransmission to the PLC system, PLC system controls the second control valve opening according to liquid level signal to obtain stable liquid
Position.
As a kind of preferred embodiment of the utility model, the liquid pump is driven by variable-frequency motor.
As a kind of preferred embodiment of the utility model, the liquid pump is single pump.
As a kind of preferred embodiment of the utility model, the liquid pump is double pump arranged side by side.
As a kind of preferred embodiment of the utility model, the liquid pump is more pumps arranged side by side.
In existing scheme, two working medium pumps (liquid pump) are used, the utility model uses the tandem of a working medium pump
Organic rankine cycle system.Working medium pump is driven by adjustable frequency motor, the pressure that PLC is transmitted according to the pressure transmitter of working medium pump discharge
Force signal controls the frequency of adjustable frequency motor to guarantee the stabilization of the outlet pressure of working medium pump.PLC passes through high-temperature evaporator and low
The liquid level signal of the warm respective fluid level transmitter transmission of evaporator controls two flow control valves respectively to realize the stabilization of liquid level.
The utility model has the beneficial effects that: the utility model proposes Cascade organic Rankine cycle power generation system,
Power is provided for two sub- circulatory systems by a liquid pump, it can effectively save cost.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of the utility model Cascade organic Rankine cycle power generation system.
Fig. 2 is the composition schematic diagram of existing organic Rankine cycle power generation system.
Fig. 3 is the composition schematic diagram of existing organic Rankine cycle power generation system in parallel.
Fig. 4 is the composition schematic diagram of existing Cascade organic Rankine cycle power generation system.
Specific embodiment
The preferred embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings.
Embodiment one
Referring to Fig. 1, the utility model discloses a kind of Cascade organic Rankine cycle power generation system, the electricity generation system
Include: PLC system (not shown), liquid pump 1, the first regulating valve 2, the first preheater 3, the first evaporator 4, the first expanding machine 5,
Generator, condenser 7, the second regulating valve 8, the second preheater 9, the second evaporator 10, the second expanding machine 11；The generator is
Double output shaft generator 6, generator are separately connected the first expanding machine 5, the second expanding machine 11.
The outlet conduit of the liquid pump 1 is equipped with pressure transmitter 101, and the liquid refrigerating working medium of low-temp low-pressure passes through liquid
1 boosting of pump, the pressure after liquid pump 1 is boosted read by pressure transmitter 101 and are transmitted to PLC system.
The pressure transmitter 101 passes through the first pipeline, second piping connection the first preheater 3, the second preheater respectively
9, the first pipeline is equipped with the first regulating valve 2, and the second pipeline is equipped with the second regulating valve 8.
First piping connection, first preheater 3, the first preheater 3 connect the first evaporator 4；First evaporator
4 the first expanding machines 5 of connection will be delivered to 5 expansion work of the first expanding machine, driving double output shaft hair by the overheated gas of gasification
Motor 6 generates electricity；First expanding machine 5 connects condenser 7, and condenser 7 connects liquid pump 1.
The first preheating pipeline is equipped in first preheater 3, one end of the first preheating pipeline connects the first heat exchanging pipe,
The other end exports hot fluid.
First evaporator 4 is equipped with the first heat exchanging pipe, the first fluid level transmitter 401, the both ends of the first heat exchanging pipe
It is respectively equipped with the first thermal fluid inlet, the first hot fluid outlet ports；First thermal fluid inlet is used to access hot fluid；First hot fluid
Outlet is connect with the first preheater 3, the second evaporator 10 respectively；The liquid level signal of first fluid level transmitter 401 passes through control
For cable transmission processed to PLC system, PLC system acquires the later aperture to control the first regulating valve 2 of liquid level signal.
Second piping connection to the second preheater 9, the second preheater 9 connects the second evaporator 10；Described second steams
It sends out device 10 and connects the second expanding machine 11,11 expansion work of the second expanding machine will be delivered to by the overheated gas of gasification, driving is double
Shaft generator 6 is exported to generate electricity；Second expanding machine 11 connects the condenser 7.
The second preheating pipeline is equipped in second preheater 9, one end of the second preheating pipeline connects the second heat exchanging pipe,
The other end exports hot fluid.
Second evaporator 10 be equipped with the second heat exchanging pipe, the second fluid level transmitter 1001, the two of the second heat exchanging pipe
End is respectively equipped with the second thermal fluid inlet, the second hot fluid outlet ports；Second thermal fluid inlet is used to access from the first evaporator 4
The hot fluid of conveying；Second hot fluid outlet ports connect the second preheater 3；The liquid level signal of second fluid level transmitter 1001 is logical
Control cable transmission is crossed to PLC system, the later aperture to control the second regulating valve 8 of PLC system acquisition liquid level signal.
In the present embodiment, the liquid pump 1 is driven by variable-frequency motor.The working medium pump view working medium flow of variable-frequency motor driving
Size can be single pump, be also possible to double pump or more pumps arranged side by side.
In conclusion the utility model proposes Cascade organic Rankine cycle power generation system, pass through a liquid pump list
Member provides power for two sub- circulatory systems, can effectively save cost.
Here the description and application of the utility model are illustrative, are not wishing to for the scope of the utility model being limited in
It states in embodiment.The deformation and change of embodiments disclosed herein be it is possible, for the ordinary skill people of those this fields
The replacement of embodiment and equivalent various parts are well known for member.It should be appreciated by the person skilled in the art that not taking off
In the case where spirit or essential characteristics from the utility model, the utility model can in other forms, structure, arrangement, ratio,
And it is realized with other components, material and component.It, can be to this in the case where not departing from the scope of the utility model and spirit
In disclosed embodiment carry out other deformations and change.
Claims (5)
1. a kind of Cascade organic Rankine cycle power generation system, which is characterized in that the electricity generation system includes: PLC system, liquid
Pump, the first regulating valve, the first preheater, the first evaporator, the first expanding machine, generator, condenser, the second regulating valve, second
Preheater, the second evaporator, the second expanding machine；The generator is double output shaft generator, and it is swollen that generator is separately connected first
Swollen machine, the second expanding machine；
Pressure transmitter, pressure of the liquid refrigerating working medium of low-temp low-pressure Jing Guo liquid pump are installed on the liquid pump export pipeline
It boosts after power pick-up；
The pressure transmitter connects the PLC system, and the PLC system controls driving according to pressure transmitter numerical values recited
The frequency of the variable-frequency motor of liquid pump, to control the outlet pressure of liquid pump；
First piping connection, first preheater, the first preheater connect the first evaporator；First evaporator connection the
One expanding machine will be delivered to the acting of the first expander by the overheated gas of gasification, drive double output shaft electrical power generators；
First expanding machine connects condenser, and condenser connects liquid pump；
The first preheating pipeline is equipped in first preheater, one end of the first preheating pipeline connects the first heat exchanging pipe, another
End output hot fluid；
First evaporator is equipped with the first heat exchanging pipe, the first fluid level transmitter, and the both ends of the first heat exchanging pipe are respectively equipped with
First thermal fluid inlet, the first hot fluid outlet ports；First thermal fluid inlet is used to access hot fluid；First hot fluid outlet ports difference
It is connect with the first preheater, the second evaporator；First fluid level transmitter feeds back to PLC system control the by liquid level signal
The aperture of one regulating valve；
Second piping connection to the second preheater, the second preheater connects the second evaporator；The second evaporator connection
Second expanding machine will be delivered to the acting of the second expander, driving double output shaft generator hair by the overheated gas of gasification
Electricity；Second expanding machine connects the condenser；
The second preheating pipeline is equipped in second preheater, one end of the second preheating pipeline connects the second heat exchanging pipe, another
End output hot fluid；
Second evaporator is equipped with the second heat exchanging pipe, the second fluid level transmitter, and the both ends of the second heat exchanging pipe are respectively equipped with
Second thermal fluid inlet, the second hot fluid outlet ports；Second thermal fluid inlet is used to access the hot-fluid from the conveying of the first evaporator
Body；Second hot fluid outlet ports connect the second preheater；Second fluid level transmitter feeds back to PLC system control by liquid level signal
Make the second regulating valve.
2. Cascade organic Rankine cycle power generation system according to claim 1, it is characterised in that:
The liquid pump includes variable-frequency motor, and the variable-frequency motor connects the PLC system, the inverter drive signal of variable-frequency motor
It is controlled by PLC system by reading the signal of liquid pump discharge pressure transmitter.
3. Cascade organic Rankine cycle power generation system according to claim 1, it is characterised in that:
The liquid pump is single pump, or is double pump arranged side by side, or be more pumps arranged side by side.
4. Cascade organic Rankine cycle power generation system according to claim 1, it is characterised in that:
The first evaporator liquid level passes through the first fluid level transmitter for liquid level signal teletransmission to the PLC system, PLC system root
The first control valve opening is controlled according to liquid level signal to obtain stable liquid level.
5. Cascade organic Rankine cycle power generation system according to claim 1, it is characterised in that:
The second evaporator liquid level passes through the second fluid level transmitter for liquid level signal teletransmission to the PLC system, PLC system root
The second control valve opening is controlled according to liquid level signal to obtain stable liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288525.XU CN208702471U (en) | 2018-08-10 | 2018-08-10 | Cascade organic Rankine cycle power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288525.XU CN208702471U (en) | 2018-08-10 | 2018-08-10 | Cascade organic Rankine cycle power generation system |
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| CN208702471U true CN208702471U (en) | 2019-04-05 |
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Cited By (3)
| 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 |
| CN114483237A (en) * | 2022-01-20 | 2022-05-13 | 重庆江增船舶重工有限公司 | Liquid level balance control system and method for evaporator of organic working medium distributed energy supply system |
| CN114562346A (en) * | 2022-03-07 | 2022-05-31 | 天津大学 | Parallel configuration power system of expansion machine |
-
2018
- 2018-08-10 CN CN201821288525.XU patent/CN208702471U/en active Active
Cited By (5)
| 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 |
| CN114483237A (en) * | 2022-01-20 | 2022-05-13 | 重庆江增船舶重工有限公司 | Liquid level balance control system and method for evaporator of organic working medium distributed energy supply system |
| CN114483237B (en) * | 2022-01-20 | 2024-03-12 | 重庆江增船舶重工有限公司 | Liquid level balance control system and method for evaporator of organic working medium distributed energy supply system |
| CN114562346A (en) * | 2022-03-07 | 2022-05-31 | 天津大学 | Parallel configuration power system of expansion machine |
| CN114562346B (en) * | 2022-03-07 | 2023-10-10 | 天津大学 | Parallel configuration power system of expander |
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