CN106703914A - Device for improving Rankine cycle heat efficiency - Google Patents
Device for improving Rankine cycle heat efficiency Download PDFInfo
- Publication number
- CN106703914A CN106703914A CN201710038619.5A CN201710038619A CN106703914A CN 106703914 A CN106703914 A CN 106703914A CN 201710038619 A CN201710038619 A CN 201710038619A CN 106703914 A CN106703914 A CN 106703914A
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- CN
- China
- Prior art keywords
- steam
- outlet
- inlet
- liquid separator
- boiler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/006—Auxiliaries or details not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a device for improving Rankine cycle heat efficiency, which can recover one part of waste steam and effectively uses heat energy of the waste steam to reduce external heat input to save the energy so as to reduce the heat energy loss of the waste steam and to improve the Rankine cycle heat efficiency. The device comprises a boiler, a steam turbine, a generator, a steam condenser, a water feeding pump, a circulating pump, a mixed water tank, a steam-liquid separator and a press; an inlet of the boiler is connected with an outlet of the water feeding pump; an outlet of the boiler is connected with an inlet of the steam turbine; an outlet of the steam turbine is connected with inlets of the steam-liquid separator and the steam condenser; the steam turbine is connected with the generator; an outlet of the steam condenser is connected with an inlet of the circulating pump and an outlet of the steam-liquid separator; an outlet of the circulating pump is connected with a liquid inlet on one corresponding side of the mixed water tank; a steam inlet of the mixed water tank is connected with an outlet of the press; a liquid outlet on the other side of the mixed water tank is connected with an inlet of the water feeding pump; a steam outlet of the steam-liquid separator is connected with an inlet of the press; and cooling medium inlet and outlet of the steam condenser are respectively connected with a cold source.
Description
Technical field
The present invention relates to be heat-treated and equipment technical field, specially a kind of device for improving the Rankine cycle thermal efficiency.
Background technology
Steam thermal energy is converted to the steam engine of mechanical energy and the Steam Power Circulation of steam turbine, the state change of its working medium
Process is carried out by rankine cycle, and wherein rankine cycle is main by boiler, steam turbine, generator, condenser and feedwater pump group
Into, steam turbine is entered by pipeline from boiler steam out, the partial heat energy of steam is converted to mechanical energy and drives hair wherein
Electric power generation, the low pressure exhaust steam for having made work(enters condenser, and water, permanent set water are condensed into after releasing the latent heat of vaporization to cooling water
By feedwater pumped back boiler, so far, working medium completes a closed process, i.e. rankine cycle, but in this cyclic process,
Heat has been released in the low pressure exhaust steam for having made work(to external world, have lost the almost all heat energy of exhaust steam, reduces rankine cycle thermal effect
Rate.
The content of the invention
Regarding to the issue above, the invention provides a kind of device for improving the Rankine cycle thermal efficiency, it can be with recovery section
Exhaust steam, and effectively using the heat energy of exhaust steam, the input of outside heat is reduced with save energy, so that the heat energy for reducing exhaust steam is damaged
Lose, improve the rankine cycle thermal efficiency.
Its technical scheme is such：It includes boiler, steam turbine, generator, condenser, feed pump, and the boiler enters
Mouth is connected with the feedwater pump discharge, and the boiler export is connected with the steam turbine import, it is characterised in that it also includes following
Ring pump, mixing tank, vapour liquid separator, pressuring machine, steam turbine outlet respectively with the vapour liquid separator, condenser import
Connection, and being connected by power transmission shaft between the steam turbine and the generator, condenser outlet respectively with the circulation
Pump inlet, vapour liquid separator outlet connection, the liquid-inlet connection of circulating-pump outlet side corresponding to the mixing tank,
The outlet of the steam inlet of the mixing tank and the pressuring machine is connected, the liquid outlet of the mixing tank opposite side with it is described
Feedwater pump inlet connection, the vapour liquid separator steam (vapor) outlet is connected with the pressuring machine import, and the cooling of the condenser is situated between
Matter import and export is connected with low-temperature receiver respectively.
Useful achievement of the invention is, during boiler steam out respectively enters condenser, vapour liquid separator through steam turbine,
A part of low pressure exhaust steam in vapour liquid separator carries out vapor-liquid separation, and the gas after separation pressurizes into pressuring machine, improves and separates
The pressure and temperature of gas, another part low pressure exhaust steam in condenser carry out heat release to cooling medium, release the latent heat of vaporization
After condense into liquid, subsequent coagulating liq is mixed with the liquid separated from vapour liquid separator, mixing liquid via
Circulation is pumped into mixing tank, and cooling medium is come by low-temperature receiver, sends low-temperature receiver cooling after being absorbed heat in condenser back to again, forms cooling
Circulation, in mixing tank, the gas come from pressuring machine is heated to mixing liquid, improves the temperature of liquid, its gas
Condense into liquid after heat release to be incorporated in mixing liquid, the liquid after temperature raising out, boiler is pumped into by feedwater from blending bin
Heated, as high temperature and high pressure steam, then high temperature and high pressure steam goes successively to steam turbine work done, and steam power is completed with this
Circulation, wherein the kinetic energy of input of pressurizeing is again much smaller than the kinetic energy for increasing part after raising efficiency, it is achieved thereby that with a small amount of energy
A large amount of heat energy of exhaust steam can be just utilized, the temperature that bears water into boiler is not only increased, the energy input of boiler is reduced again, subtracted
The input of the internal circulating load and kinetic energy of cooling medium is lacked, so as to substantially increase the thermal efficiency of Rankine cycle.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Specific embodiment
As shown in figure 1, the present invention include boiler 1, steam turbine 2, generator 3, condenser 4, circulating pump 5, mixing tank 6,
Feed pump 7, vapour liquid separator 8, pressuring machine 9, wherein, boiler 1 is energy conversion, and input energy sources heat liquid to produce steaming
Vapour；Steam turbine 2 is that steam thermal energy is changed into the device of mechanical energy and drives generator 3 to generate electricity；Condenser 4 is exhaust steam cooling dress
Put, exhaust steam is cooled to liquid in the presence of cooling medium；Circulating pump 5 provides power for working medium circulation；The liquid of mixing tank 6 adds
Heat and bunkerage, are mixed into steam direct heating liquid；Feed pump 7 provides power for working medium circulation；8 vapour of vapour liquid separator,
Liquid centrifugation；Pressuring machine 9 is steam boosting heating device；The import of boiler 1 is exported with feed pump 7 by pipeline and is connected, boiler 1
Outlet is connected by pipeline with the import of steam turbine 2, and the outlet of steam turbine 2 is entered with vapour liquid separator 8, condenser 4 respectively by pipeline
Mouthful connection, and between steam turbine 2 and generator 3 by power transmission shaft connect, condenser 4 outlet by pipeline respectively with circulating pump 5
Import, the outlet connection of vapour liquid separator 8, the outlet of circulating pump 5 are connected by pipeline to the liquid-inlet of the corresponding side of mixing tank 6
Connect, the steam inlet of mixing tank 6 is exported with pressuring machine 9 by pipeline and is connected, and the liquid outlet of the opposite side of mixing tank 6 passes through
Pipeline is connected with the import of feed pump 7, and the steam (vapor) outlet of vapour liquid separator 8 is connected by pipeline with the import of pressuring machine 9, condenser 4
Cooling medium import and export is connected with low-temperature receiver respectively.
Operation principle of the invention is to enter steam turbine 2 by pipeline from the steam out of boiler 1, and steam is in steam turbine 2
Interior adiabatic expansion work done, the partial heat energy of steam is converted to mechanical energy and drives generator 3 to generate electricity wherein, and the low pressure for having made work(is weary
Vapour respectively enters condenser 4, vapour liquid separator 8 by pipeline, and a part of low pressure exhaust steam in vapour liquid separator 8 carries out vapour-liquid
Separate, the gas after separation is pressurizeed by pipeline into pressuring machine 9, the pressure and temperature for separating gas are improved, while in condensing
Another part low pressure exhaust steam in device 4 carries out heat release to cooling medium, and liquid, subsequent condensation water are condensed into after releasing the latent heat of vaporization
Body is mixed with the liquid separated from vapour liquid separator 8, and mixing liquid is sent into via circulating pump 5 by pipeline and mixed
Water tank 6, cooling medium is come by low-temperature receiver, sends low-temperature receiver cooling back to again after heat absorption in condenser 4, cooling circulation is formed, in mixing
In water tank 6, the gas come from pressuring machine 9 is heated to mixing liquid, improves the temperature of liquid, is condensed after its gas heat release
It is incorporated in mixing liquid into liquid, the liquid after temperature raising out, boiler 1 is sent into by pipeline from blending bin 6 by feed pump 7
Heated, as high temperature and high pressure steam, then high temperature and high pressure steam enters steam turbine 2 by pipeline, so far, completes one
New Steam Power Circulation, i.e., in Rankine cycle of the invention, using a part of exhaust steam with the latent heat of vaporization, by pressurization
Mix intensification after intensification with the weary vapor condensed water of another part, that improves boiler bears water temperature, and improve boiler and bear water temperature and can have
Effect improves the Steam Power Circulation thermal efficiency.
Claims (1)
1. it is a kind of improve the Rankine cycle thermal efficiency device, it includes boiler, steam turbine, generator, condenser, feed pump, institute
State boiler inlet to be connected with the feedwater pump discharge, the boiler export is connected with the steam turbine import, it is characterised in that its
Also include circulating pump, mixing tank, vapour liquid separator, pressuring machine, steam turbine outlet respectively with the vapour liquid separator, solidifying
The import of vapour device is connected, and is connected by power transmission shaft between the steam turbine and the generator, condenser outlet respectively with
The pump inlet, vapour liquid separator outlet connection, the liquid of circulating-pump outlet side corresponding to the mixing tank
Import is connected, and the steam inlet of the mixing tank is connected with pressuring machine outlet, the liquid of the mixing tank opposite side
Outlet is connected with the feedwater pump inlet, and the vapour liquid separator steam (vapor) outlet is connected with the pressuring machine import, the condensing
The cooling medium import and export of device is connected with low-temperature receiver respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038619.5A CN106703914A (en) | 2017-01-19 | 2017-01-19 | Device for improving Rankine cycle heat efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038619.5A CN106703914A (en) | 2017-01-19 | 2017-01-19 | Device for improving Rankine cycle heat efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106703914A true CN106703914A (en) | 2017-05-24 |
Family
ID=58907018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710038619.5A Pending CN106703914A (en) | 2017-01-19 | 2017-01-19 | Device for improving Rankine cycle heat efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703914A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6432401U (en) * | 1987-08-24 | 1989-03-01 | ||
| CN1473766A (en) * | 2003-05-16 | 2004-02-11 | 上海交通大学 | Double stage absorptive compressing type high temperature heat pump sea water desalination device |
| EP1482131A1 (en) * | 2003-05-24 | 2004-12-01 | Rerum Cognitio | Indirectly heated process for generating electric power in a cycle and device for the implementation thereof |
| CN2809525Y (en) * | 2005-04-11 | 2006-08-23 | 北京工业大学 | Heat pump system with injector and liquid storing and overcooling device |
| CN201508080U (en) * | 2009-08-27 | 2010-06-16 | 东莞市象能电气设备有限公司 | Double energy source multifunctional all-in-one machine |
| DE102014014151A1 (en) * | 2014-09-22 | 2016-03-24 | Christoph Feiler | Method for operating a steam power plant and devices for carrying out the method |
| CN206468383U (en) * | 2017-01-19 | 2017-09-05 | 无锡雪浪环境科技股份有限公司 | Improve the device of the Rankine cycle thermal efficiency |
-
2017
- 2017-01-19 CN CN201710038619.5A patent/CN106703914A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6432401U (en) * | 1987-08-24 | 1989-03-01 | ||
| CN1473766A (en) * | 2003-05-16 | 2004-02-11 | 上海交通大学 | Double stage absorptive compressing type high temperature heat pump sea water desalination device |
| EP1482131A1 (en) * | 2003-05-24 | 2004-12-01 | Rerum Cognitio | Indirectly heated process for generating electric power in a cycle and device for the implementation thereof |
| CN2809525Y (en) * | 2005-04-11 | 2006-08-23 | 北京工业大学 | Heat pump system with injector and liquid storing and overcooling device |
| CN201508080U (en) * | 2009-08-27 | 2010-06-16 | 东莞市象能电气设备有限公司 | Double energy source multifunctional all-in-one machine |
| DE102014014151A1 (en) * | 2014-09-22 | 2016-03-24 | Christoph Feiler | Method for operating a steam power plant and devices for carrying out the method |
| CN206468383U (en) * | 2017-01-19 | 2017-09-05 | 无锡雪浪环境科技股份有限公司 | Improve the device of the Rankine cycle thermal efficiency |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |