CN104975881B - A kind of Organic Rankine Cycle power generator - Google Patents
A kind of Organic Rankine Cycle power generator Download PDFInfo
- Publication number
- CN104975881B CN104975881B CN201410139521.5A CN201410139521A CN104975881B CN 104975881 B CN104975881 B CN 104975881B CN 201410139521 A CN201410139521 A CN 201410139521A CN 104975881 B CN104975881 B CN 104975881B
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- Prior art keywords
- screw expander
- rankine cycle
- pump
- organic rankine
- working medium
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01C13/04—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving pumps or compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/24—Control of, monitoring of, or safety arrangements for, machines or engines characterised by using valves for controlling pressure or flow rate, e.g. discharge valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/28—Safety arrangements; Monitoring
Abstract
Organic Rankine Cycle power generator of the present invention, including screw expander, oil transfer pump, gs-oil separator, condenser, working medium booster pump, evaporator, generator, condensate pump and cooling tower；The device also has additional the working medium flow automatic adjusting mechanism being made of flow control valve, differential pressure transmitter, controller and two pressure sensors, and wherein differential pressure transmitter is connected with controller；The pressure sensor is separately positioned on the high and low pressure pipeline of screw expander, and is connected with differential pressure transmitter；The controller is connected with flow control valve and working medium booster pump again, and carrys out the flow that controlled medium enters screw expander whereby.The present invention enters the flow of expanding machine by automatic flow regulating mechanism to automatically adjust working medium, and improve the expansion efficiency of screw expander.
Description
Technical field
The present invention relates to organic Rankine technical field of power generation, and in particular to ground is a kind of Organic Rankine Cycle power generator.
Background technique
Conventional organic Rankine cycle power generation system is as shown in figure: including screw expander 1, oil transfer pump 2, oil
Gas separating device 3, condenser 4, working medium booster pump 5, evaporator 6, generator 7, condensate pump 8, cooling tower 9.Its specific work
Make process, be the liquid refrigerant after cooling of condenser 4, becomes the liquid of cryogenic high pressure after the pressurization of working medium booster pump 5, pass through
The heat absorption vaporization of evaporator 6 becomes the gas of high temperature and pressure, expands decompression heat release acting into screw expander 1, lead-screw turns
Son rotation, converts heat into mechanical energy, and generator 7 is driven to generate electricity, the oil and gas mixture being discharged from screw expander 1, through oil
Gas separating device 3 separates, and the Working medium gas of low pressure is again introduced into condenser 4 and is cooled to low temperature liquid working medium, and then completes the system
Circulation；Wherein oil transfer pump 2 is transported in screw expander 1 after pressurization and moistens for drawing lubricating oil from gs-oil separator 3
Slide rotor and bearing；Condensate pump 8 draws cooling water from cooling tower 9, does cooling to cycle fluid into condenser 4.
In above-mentioned organic Rankine cycle power generation system, due to entering the stable wave of 1 working medium flow pressure head of screw expander
Dynamic and variation, working medium cannot the sufficiently effective steady expansion work (expansion ratio of general screw expander in screw expander 1
Control is in 1:4 or so), cause rotary speed unstabilization fixed, influences the instantaneous unstability of the generated energy of system, reduce generating efficiency；
Simultaneously in machine Rankine cycle electricity generation system, independent oil transfer pump 2 needs external motor to drive in long-term work, increases
The energy consumption for having added entire electricity generation system affects the working efficiency and economic and reliable of system.
Summary of the invention
A kind of Organic Rankine Cycle power generator is provided the invention aims to overcome the deficiencies in the prior art.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of Organic Rankine Cycle power generator, including spiral shell
Bar expanding machine, oil transfer pump, gs-oil separator, condenser, working medium booster pump, evaporator, generator, condensate pump and cold
But water tower, wherein gs-oil separator is connected with screw expander and condenser respectively, so as to the oil that screw expander is discharged
Gas mixture isolates Working medium gas and is again introduced into condenser and recycled；The Organic Rankine Cycle power generator also has additional
The working medium flow automatic adjusting mechanism being made of flow control valve, differential pressure transmitter, controller and two pressure sensors,
Middle differential pressure transmitter is connected with controller；The pressure sensor is separately positioned on the high and low pressure pipeline of screw expander,
And it is connected with differential pressure transmitter；The controller is connected with flow control valve and working medium booster pump again, and controls whereby
Working medium processed enters the flow of screw expander.
Further, which is additionally provided with pressure check valve between high and low pressure pipeline.
Further, the pressure check valve is set as safety overflow valve, electric control one-way valve, hydraulic control one-way valve or decompression
Valve.
Further, the oil transfer pump is directly driven by screw expander or generator.
Further, the oil transfer pump and screw expander are arranged to all-in-one machine formula structure, mainly by expanding
Casing body, male rotor, female rotor, gear pump case, driving gear and driven gear composition, wherein male rotor and female rotor are mutually nibbled
Ground is closed to be arranged in expanding machine shell, and driving gear and driven gear are arranged in gear pump case；The driving gear and from
Moving gear passes through flat key respectively and is fixedly mounted on driving shaft and driven shaft, and lubrication is realized by the gyroscopic action of its engagement
The suction of oily delivery pump acts on.
Further, it is additionally provided with safety valve in the oil transfer pump, wherein the valve body of safety valve is arranged to one
Cylindrical differential piston with convex shoulder.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
Organic Rankine Cycle power generator of the present invention, by automatic flow regulating mechanism, to automatically adjust working medium
Into the flow of expanding machine, and improve the expansion efficiency of screw expander；Lubricating oil is directly driven by screw expander simultaneously
Delivery pump adds pressure check valve on high and low pressure pipeline, stablizes the device operational security, reduces energy consumption, improves operation warp
Ji safety and generating efficiency.
Detailed description of the invention
Technical scheme of the present invention is further explained with reference to the accompanying drawing:
Attached drawing 1 is the schematic diagram of Organic Rankine Cycle power generator in the prior art；
Attached drawing 2 is the schematic diagram of Organic Rankine Cycle power generator of the present invention；
Attached drawing 3 is the schematic diagram that screw expander carries oil transfer pump in the present invention；
Attached drawing 4 is the A-A cross-sectional view in attached drawing 3；
Wherein 1, screw expander；2, oil transfer pump；3, fuel and vapor separator；4, condenser；5, working medium booster pump；
6, evaporator；7, generator；8, condensate pump；9, cooling tower；10, pressure sensor；11, differential pressure transmitter；12, it controls
Device；13, flow control valve；14, pressure check valve；
101, expanding machine shell；102, male rotor；103, female rotor；104, gear pump case；105, moving gear；106, from
Moving gear；107, safety valve；108, spring；109, spring base；110, locking nut；111, screw is adjusted；112, driving shaft；
113, driven shaft.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
Organic Rankine Cycle power generator of the invention as shown in Fig. 2 is equipped with screw expander 1 in this device,
Oil transfer pump 2, gs-oil separator 3, condenser 4, working medium booster pump 5, evaporator 6, generator 7, condensate pump 8, cooling
Water tower 9, and the working medium flow being made of flow control valve 13, differential pressure transmitter 11, controller 1 and two pressure sensors 10
Automatic adjusting mechanism.Wherein gs-oil separator 3 is not connected with screw expander 1 and condenser 4, so as to by screw expander 1
The gas mixture of discharge isolates Working medium gas and is again introduced into condenser 4 and recycled；Organic Rankine Cycle power generation dress
It sets and also adds, wherein differential pressure transmitter 11 is connected with controller 12；The pressure sensor 10 is separately positioned on screw expansion
On the high and low pressure pipeline of machine 1, and it is connected with differential pressure transmitter 11；The controller 12 again with flow control valve 13 and work
Matter booster pump 5 is connected, and carrys out the flow that controlled medium enters screw expander 1 whereby.
Wherein the Organic Rankine Cycle power generator is additionally provided with pressure check valve 14 between high and low pressure pipeline；And it presses
Power check valve 14 can be set to safety overflow valve, electric control one-way valve, hydraulic control one-way valve or pressure reducing valve.Pressure sensor 10 is defeated
Pressure parameter out can be pressure value signal, be also possible to current signal；The flow control valve 13 can be by low voltage motor
Controlling opening of valve is driven, the aperture of control valve can also be directly driven by air rammer；Organic Rankine Cycle power generation
Device at work, increases and sets working medium flow automatic adjusting mechanism according to the pressure difference calculating on 1 high and low pressure pipeline of screw expander
The expansion ratio of screw expander 1 out enters the flow of screw expander 1 come the controlled medium that automatically adjusts, to improve screw rod
The unit production capacity and operation process reliability of expanding machine 1；It is specifically two pressure sensors 10 respectively to screw expander 1
High and low pressure pipeline is monitored, the pressure signal transmission that will test to differential pressure transmitter 11, is calculated automatically by controller 12
The practical expansion ratio (general control is in 1:4 or so) that screw expander 1 works out, is modified, controller according to preset numerical value
12 issue a signal to the variable-frequency motor of flow control valve 13 and working medium booster pump 5, first is that gas is driven or passed through by low voltage motor
Piston drives the aperture of control valve, second is that according to setting by changing the revolving speed of working medium booster pump 5, come automatically control into
Enter the working medium flow of expanding machine, guarantees that expanding machine is run under optimum expansion ratio state, give full play to its optimum working efficiency.Together
When to do safeguard protection to the high-pressure sides such as screw expander 1 and device pipeline, pressure check valve is also equipped between high, base pressure pipeline
14(is preferably safety overflow valve), when the device high side pressure is more than setting numerical value, pressure check valve 14 can be held automatically
It opens and closes in time, to guarantee that working medium steady-state cycle under safe pressure does work in whole device.
During the work time, oil transfer pump 2 is directly driven by screw expander 1 or generator 7 to the present invention
Dynamic.Wherein as shown in attached drawing 3,4, oil transfer pump 2 and screw expander 1 are arranged to all-in-one machine formula structure, led
Will be by expanding machine shell 101, male rotor 102, female rotor 103, gear pump case 104, driving gear 105 and 106 groups of driven gear
At, wherein male rotor 102 and female rotor 103 intermeshing ground be arranged in expanding machine shell 101, and driving gear 105 and from
Moving gear 106 is arranged in gear pump case 104；The driving gear 105 and driven gear 106 are fixedly mounted by flat key respectively
Realize that the suction of oil transfer pump 2 acts on driving shaft 112 and driven shaft 113, and through the gyroscopic action of its engagement；
It is additionally provided with safety valve 107 in the oil transfer pump 2, wherein the valve body of safety valve 107 is arranged to one with convex shoulder
Cylindrical differential piston.In order to adjust and limit the operating pressure of oil pump, oil pump is equipped with adjustable safety valve 107, safety valve
Valve body is the differential piston that a cylindrical type has convex shoulder.
And safety valve 107 has separately included spring 108, spring base 109, locking nut 110 and has adjusted screw 111.When
When pressure is more than limit value, the spring 108 of safety valve 107 is compressed and opens valve, and both ends are inhaled by the row of communication, to reach pressure release
Purpose, the pretightning force of spring 108 then can by adjust screw 111 come set adjustment oil transfer pump 2 operating pressure.Profit
Oil delivery pump 2 can directly be linked with the male rotor 102 or female rotor 103 of screw expander 1, and reaching reduces the device
Total electricity energy consumption improves the purpose of device performance driving economy.The device is in specific works, when screw expander 1 operates, drives
Oil transfer pump 2 turns round, all inflated casing body 101 in the periphery and two sides of driving gear 105 and driven gear 106 and gear
Pump case 104 surrounds, and forms sealing space, in this space, since the tooth to intermesh separates, and constitutes two each other
The cavity of isolation, i.e., the suction chamber communicated with suction line and the discharge chamber communicated with outlet, with driving gear 105 and driven
The continuous rotation of gear 106, the oil liquid between cog are brought in the higher right chamber of pressure, and lubrication is continuously conveyed in formation
The function of oil.
For the present invention during specifically used, generator 7 can be also possible to 4 poles or multipole hair with 2 pole motors simultaneously
Motor, can be using either synchronously or asynchronously or the generator of other forms；Oil transfer pump 2 can be gear pump, be also possible to
Adjustable safety valve is arranged in plunger pump or sliding-vane pump or other positive displacement pumps, oil delivery pump ontology high and low pressure interchannel；The spiral shell
The output shaft of bar expanding machine 1 can with generator coaxle, be also possible to using shaft coupling (hardness, elasticity, sprocket wheel) connection or its
The connection of its transmission mechanism, the expanding machine output shaft can be male rotor 102, be also possible to female rotor 103.
Organic Rankine Cycle power generator of the present invention, by automatic flow regulating mechanism, to automatically adjust working medium
Into the flow of expanding machine, and improve the expansion efficiency of screw expander 1；Lubrication is directly driven by screw expander 1 simultaneously
Oily delivery pump 2, adds pressure check valve 14 on high and low pressure pipeline, stablizes the device operational security, reduces energy consumption, improves
Economical operation safety and generating efficiency.
The description of this programme and application mode be it is illustrative, can be in the case where not departing from the invention principle
By other structures, in the form of, material, ratio and arrangement realize the present invention.
Claims (6)
1. a kind of Organic Rankine Cycle power generator, including screw expander (1), oil transfer pump (2), gs-oil separator
(3), condenser (4), working medium booster pump (5), evaporator (6), generator (7), condensate pump (8) and cooling tower (9), wherein
Gs-oil separator (3) is connected with screw expander (1) and condenser (4) respectively, so as to the oil that screw expander (1) is discharged
Gas mixture isolates Working medium gas and is again introduced into condenser (4) and recycled；It is characterized by: the Organic Rankine Cycle is sent out
Electric installation also has additional by flow control valve (13), differential pressure transmitter (11), controller (12) and two pressure sensors
(10) the working medium flow automatic adjusting mechanism formed, wherein differential pressure transmitter (11) is connected with controller (12)；The pressure
Sensor (10) is separately positioned on the high and low pressure pipeline of screw expander (1), and is connected with differential pressure transmitter (11)；
The controller (12) is connected with flow control valve (13) and working medium booster pump (5) again, and carrys out controlled medium whereby and enter spiral shell
The flow of bar expanding machine (1).
2. Organic Rankine Cycle power generator according to claim 1, it is characterised in that: Organic Rankine Cycle power generation dress
It sets and is additionally provided with pressure check valve (14) between high and low pressure pipeline.
3. Organic Rankine Cycle power generator according to claim 2, it is characterised in that: the pressure check valve (14) sets
It is set to safety overflow valve, electric control one-way valve, hydraulic control one-way valve or pressure reducing valve.
4. Organic Rankine Cycle power generator according to claim 1, it is characterised in that: the oil transfer pump (2)
It is directly to be driven by screw expander (1) or generator (7).
5. according to claim 1 or Organic Rankine Cycle power generator described in 4, it is characterised in that: the lubricating oil conveying
Pump (2) and screw expander (1) are arranged to all-in-one machine formula structure, including expanding machine shell (101), male rotor (102), female rotor
(103), gear pump case (104), driving gear (105) and driven gear (106), wherein male rotor (102) and female rotor (103)
The setting of intermeshing ground is in expanding machine shell (101), and driving gear (105) and driven gear (106) are arranged in gear pump
In shell (104)；The driving gear (105) and driven gear (106) respectively by flat key be fixedly mounted on driving shaft (112) and
On driven shaft (113), and realize that the suction of oil transfer pump (2) acts on by the gyroscopic action of its engagement.
6. Organic Rankine Cycle power generator according to claim 5, it is characterised in that: the oil transfer pump (2)
Safety valve (107) are inside additionally provided with, wherein the valve body of safety valve (107) is arranged to the differential work of cylinder with convex shoulder
Plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139521.5A CN104975881B (en) | 2014-04-09 | 2014-04-09 | A kind of Organic Rankine Cycle power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139521.5A CN104975881B (en) | 2014-04-09 | 2014-04-09 | A kind of Organic Rankine Cycle power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104975881A CN104975881A (en) | 2015-10-14 |
| CN104975881B true CN104975881B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410139521.5A Active CN104975881B (en) | 2014-04-09 | 2014-04-09 | A kind of Organic Rankine Cycle power generator |
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| Country | Link |
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| CN (1) | CN104975881B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837424B (en) * | 2017-02-25 | 2023-04-07 | 上海齐耀膨胀机有限公司 | Variable-speed constant-frequency power generation system and power generation method of screw expander |
| CN112253257A (en) * | 2020-11-12 | 2021-01-22 | 意朗实业（上海）有限公司 | Expander system and power generation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2292905Y (en) * | 1996-07-08 | 1998-09-30 | 余自伟 | Waste heat electric generating apparatus |
| US7334428B2 (en) * | 2005-09-30 | 2008-02-26 | Sullair Corporation | Cooling system for a rotary screw compressor |
| CN101532402A (en) * | 2009-04-22 | 2009-09-16 | 天津大学 | Dual-circulation screw expansion motor system |
| CN201599071U (en) * | 2010-01-27 | 2010-10-06 | 江西佳能新能源发展有限公司 | Environment-friendly energy saving and emission reduction reaction working medium recycling system |
| CN102996182A (en) * | 2011-09-07 | 2013-03-27 | 株式会社神户制钢所 | Power generation device |
-
2014
- 2014-04-09 CN CN201410139521.5A patent/CN104975881B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2292905Y (en) * | 1996-07-08 | 1998-09-30 | 余自伟 | Waste heat electric generating apparatus |
| US7334428B2 (en) * | 2005-09-30 | 2008-02-26 | Sullair Corporation | Cooling system for a rotary screw compressor |
| CN101532402A (en) * | 2009-04-22 | 2009-09-16 | 天津大学 | Dual-circulation screw expansion motor system |
| CN201599071U (en) * | 2010-01-27 | 2010-10-06 | 江西佳能新能源发展有限公司 | Environment-friendly energy saving and emission reduction reaction working medium recycling system |
| CN102996182A (en) * | 2011-09-07 | 2013-03-27 | 株式会社神户制钢所 | Power generation device |
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| CN104975881A (en) | 2015-10-14 |
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Effective date of registration: 20190610 Address after: 056700 Shang Cheng town Industrial Park, Cheng An county, Handan, Hebei Patentee after: Hebei constant machinery and equipment Technology Co., Ltd. Address before: Room 601, 51 lane, 711 lane, Zheng Li Road, Yangpu District, Shanghai. Patentee before: Yuan Jianhua |
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Address after: 056700 Shang Cheng town Industrial Park, Cheng An county, Handan, Hebei Patentee after: Hebei henggong precision equipment Co.,Ltd. Address before: 056700 Shang Cheng town Industrial Park, Cheng An county, Handan, Hebei Patentee before: HEBEI HENGONG MACHINERY TECHNOLOGY Co.,Ltd. |
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