CN104948399A - Double-shaft double-speed steam turbine for solar power generation - Google Patents
Double-shaft double-speed steam turbine for solar power generation Download PDFInfo
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- CN104948399A CN104948399A CN201510365458.1A CN201510365458A CN104948399A CN 104948399 A CN104948399 A CN 104948399A CN 201510365458 A CN201510365458 A CN 201510365458A CN 104948399 A CN104948399 A CN 104948399A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention relates to the field of steam turbine power generation, in particular to a steam turbine for solar power generation. The steam turbine mainly solves the technical problem that a traditional axial flow type steam turbine is low in efficiency. According to the technical scheme, the double-shaft double-speed steam turbine for solar power generation comprises a cylinder, a gearbox and a power generator. The double-shaft double-speed steam turbine is characterized in that the cylinder is composed of a high-rotation-speed high-pressure cylinder and a low-rotation-speed low-pressure cylinder, the high-pressure cylinder and the low-pressure cylinder are arranged side by side, a high-rotation-speed rotor of the high-pressure cylinder and a low-rotation-speed rotor of the low-pressure cylinder share one gearbox, and the output end of the gearbox is connected with the power generator. The steam turbine has the advantages of being small in size, low in weight, high in efficiency, capable of being quickly started and stopped, high in adaptability and the like, and is mainly suitable for the fields of steam power generation in medium and low temperature environments and environments with unstable flow such as solar power generation.
Description
Technical field
The present invention relates to steam turbine power generation field, particularly relate to solar electrical energy generation steam turbine.
Background technique
Solar energy is as clean energy resource, there is the particular advantages such as inexhaustible, pollution-free, cheap, there is huge potential market, and progressively will occupy significant share in energy consumption structure, become one of the main energy sources in the whole world, various countries increase the exploitation to solar energy gradually in recent years, and solar electrical energy generation, as the important way that can utilize solar energy on a large scale, also presents good growth momentum.But solar energy utilization ratio is low is the difficult scientific problems causing cost for solar power generation high, the significant bottleneck being also restriction and hindering recent solar power system to utilize on a large scale.Research and development for the small steam turbine unit of solar power system, improve its energy conversion efficiency, also just seem particularly important specially.
Solar power system is made up of three parts usually: solar thermal collection system, accumulation of heat and heat-exchange system, heat to power output system.Three digest journals works simultaneously, completes by the conversion of luminous energy to electric energy.The total efficiency η of system is determined jointly by the component efficiency of three systems, is also η=η 1 × η 2 × η 3.As can be seen here, three digest journals is to the position contribution of total efficiency being in equality.But from the ratio between investments of solar power station three digest journals, solar thermal collection system accounts for 57% of gross investment, and accumulation of heat and heat-exchange system account for 17% of gross investment, and heat to power output system only accounts for 10% of gross investment.Therefore strengthen and the key technology of heat to power output system is researched and developed, improve its thermal efficiency, concerning the total efficiency of whole solar power system promotes, invest little, instant effect, there is obvious economic benefit.
Solar energy has himself distinguishing feature, is mainly reflected in following two aspects: one be solar energy by day with the intermittence at night; Two is that the energy flux density of solar energy is low, has wave properties simultaneously.Just because of the feature that these are different from traditional fossil energy, solar steam turbine is made to have the technical requirements of its uniqueness: (1) can realize starting and reaching working state fast, and starting time is within 20 minutes.And starting time generally wanted several hours even tens hours by traditional steam turbine.(2) higher efficiency to be had, to improve the Lang Ken cycle efficiency of whole system, reduce cost of electricity-generating.(3) will meet at least start and stop every day requirement once, traditional steam turbine is then will avoid start and stop as far as possible.(4) pulsation of steam flow and pressure to be adapted to, the fatigue life of structure is also just had higher requirement.The motivation that the steam turbine of conventional energy resource adopts sliding pressure technology to carry out regulating is the load reduction of turbogenerator, adopts sliding pressure technology keeping meeting by reducing fuel supply the requirement that load reduces under the constant prerequisite of efficiency as far as possible.And concerning solar-electricity converting system, adopt sliding pressure technology to be then the unstable inevitable outcome of heat input.
In solar electrical energy generation process, the area limitation of the solar heat-collection plate load of boiler, if ensure that higher steam initial conditions, often causes steam flow very little.When high enthalpy drop, small flow, Design of Steam Turbine generally adopts the mode of multistage, high rotating speed, partial admission.The vapour volume flow flowing through high pressure stage is especially little, and the design of partial admission can avoid the relative leaf height designed too small.Traditional axial flow steam turbine often adopts biserial velocity-compounded stage as governing stage in high pressure stage, utilizes nozzle governing to realize partial admission.Adopt velocity-compounded stage that the efficiency of steam turbine can be made to become very low, and the displacement loss caused by too small degree of partial admission also can not be ignored.When whole steam turbine all adopts axial flow, the efficiency of later stages will be very low, there is serious rotor dynamics problems simultaneously.Formation axial flow/centripetal combination steam turbine if axial flow and Inflow Steam Turbine are combined, can combined axis streaming runner level and smooth, and radial inflow volume is little, rotating speed is high, compact structure and the high feature of efficiency, realizes the little volume flow of steam turbine, height compares enthalpy drop.
Summary of the invention
The object of the present invention is to provide a kind of high-efficiency solar power generation turbine that there is twin shaft double speed structural design, adopt sliding pressure operation, mainly solve the technical problem that traditional axial flow steam turbine efficiency is low.Feature of the present invention be small, lightweight, efficiency is high, can rapid starting/stopping, adaptable etc., be mainly applicable to the steam electric power field under medium and low temperature, instability of flow environment, as solar electrical energy generation.
Technical solution of the present invention: twin shaft double speed solar electrical energy generation steam turbine, comprises cylinder, gearbox and generator.It is characterized in that described cylinder is made up of high-revolving high-pressure cylinder and slow-revving low pressure (LP) cylinder, high-pressure cylinder and low pressure (LP) cylinder are arranged side by side, and the high rotating speed rotor of high-pressure cylinder and the slow-speed of revolution rotor of low pressure (LP) cylinder share a gearbox, and gear box output end connects generator.High and low cylinder pressure can ensure that whole steam turbine runs under higher efficiency under operating in the design speed of different process optimization separately.
Described high-pressure cylinder is provided with steam (vapor) outlet, and described low pressure (LP) cylinder is provided with steam inlet, and steam (vapor) outlet and steam inlet pass through pipeline connection.
Described high-pressure cylinder adopts high-revolving centripetal turbine, and the steam turbine of small flow adopts high rotating speed can lower boundary layer loss and partial-air admission loss, ensures the Effec-tive Function of high-pressure cylinder under small flow.Adopt the high-pressure cylinder of centripetal turbine to adopt the outside cylinder of barrel shape structure, because barrel shape structure has lower structural stress, steam turbine can be realized in 0.5 hour and start fast.
Described low pressure (LP) cylinder adopts the axial-flow turbine of the three dimendional blade design with bending feature, realizes Effec-tive Function under final stage high voltage load.Compared with the axial-flow turbine of traditional small flow, internal efficiency ratio can improve about ten percentage points, reaches more than 82%.
Described steam turbine is condensing steam turbine or sucking condensing turbine, adopts sliding pressure operation., thermal parameter strong according to the intermittence of solar electrical energy generation changes sunlight heat characteristic greatly, adopts wide parameter the steam turbine of sliding pressure operation can give cooperation.
Beneficial effect of the present invention:
1. high-pressure cylinder and low pressure (LP) cylinder relatively independent, be convenient to modularization, split axle is arranged can adopt different rotating speeds, makes to reach separately optimum efficient point.And high-pressure cylinder adopts high rotating speed, high-pressure cylinder rotor weight is alleviated, be beneficial to and realize starting fast.
2. be convenient to realize reheating, high-pressure cylinder outlet vapor can be introduced reheater reheating, then enter low pressure (LP) cylinder acting.Reheating can further improve generatine set heat efficiency, but the also corresponding raising of required steam initial pressure.
3. be convenient to realization draw gas, vapour can be drawn in high-pressure cylinder outlet, thus avoid newly opening extraction opening on cylinder body, while ensureing structural compactness, reducing the loss in efficiency brought because drawing gas.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-Oil Guide recuperative furnace, 2-high-pressure cylinder, 3-high-pressure spool, 4-gearbox, 5-coupling a, 6-generator, 7-low pressure (LP) cylinder, 8-low-pressure spool, 9-condenser, 10-oxygen-eliminating device, 11-feed water pump, 12-control valve, 13-coupling b.
Embodiment
Below in conjunction with Fig. 1, the present invention is further described.
Twin shaft double speed solar electrical energy generation steam turbine, comprises high-pressure cylinder 2, low pressure (LP) cylinder 7 and gearbox 4.High-pressure cylinder 2 and low pressure (LP) cylinder 7 are arranged side by side, high-pressure cylinder 2 turn scooter 36000 revs/min, the rotating speed of low pressure (LP) cylinder 7 is 7500 revs/min, and the high rotating speed rotor of high-pressure cylinder 2 and the slow-speed of revolution rotor of low pressure (LP) cylinder 7 share a gearbox 4, and gearbox 4 output terminal connects generator 6.High pressure steam in Oil Guide recuperative furnace 1 is entered in high-pressure cylinder 2 by control valve 12 and carries out expansion work, High Rotation Speed is carried out in energizes high-pressure rotating shaft 3 simultaneously, in high-pressure cylinder 2, steam out enters low pressure (LP) cylinder 7 and proceeds expansion work, energize low-pressure rotating shaft 8 simultaneously rotates, what high-pressure cylinder 2 adopted is centripetal turbine, the outstanding feature of centripetal turbine is that it has higher rotating speed, and low pressure (LP) cylinder 7 employing is axial flow, its rotating speed is lower, by optimizing, under making high and low pressure cylinder operate in the design speed of different process optimization separately, can ensure that whole steam turbine runs under higher efficiency.High-pressure spool 3 is connected with gearbox 4 respectively by coupling b13 with low-pressure spool 8, and gearbox 4 is connected with generator 6 by coupling a 5, realizes high-pressure spool 3 and low-pressure spool 8 by a gears meshing, while drive electrical generators 6 generate electricity.
Enter in condenser 9 from low pressure (LP) cylinder 7 low pressure steam out and condense into condensed water, then (get the vapour source of high-pressure cylinder 2 exit portion steam as oxygen-eliminating device 10) after oxygen-eliminating device 10 deoxygenation, entered in Oil Guide recuperative furnace 1 by feed water pump 11 and complete a circulation.
Claims (5)
1. twin shaft double speed solar electrical energy generation steam turbine, comprise cylinder, gearbox and generator, it is characterized in that described cylinder is made up of high-revolving high-pressure cylinder and slow-revving low pressure (LP) cylinder, high-pressure cylinder and low pressure (LP) cylinder are arranged side by side, the high rotating speed rotor of high-pressure cylinder and the slow-speed of revolution rotor of low pressure (LP) cylinder share a gearbox, and gear box output end connects generator.
2. twin shaft double speed solar electrical energy generation steam turbine according to claim 1, it is characterized in that described high-pressure cylinder is provided with steam (vapor) outlet, described low pressure (LP) cylinder is provided with steam inlet, and steam (vapor) outlet and steam inlet pass through pipeline connection.
3. twin shaft double speed solar electrical energy generation steam turbine according to claim 1, is characterized in that: high-pressure cylinder adopts high-revolving centripetal turbine.
4. twin shaft double speed solar electrical energy generation steam turbine according to claim 1, is characterized in that: low pressure (LP) cylinder adopts the three dimendional blade axial-flow turbine with bending feature.
5. twin shaft double speed solar electrical energy generation steam turbine according to claim 1, is characterized in that: steam turbine is condensing steam turbine or sucking condensing turbine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510365458.1A CN104948399A (en) | 2015-06-29 | 2015-06-29 | Double-shaft double-speed steam turbine for solar power generation |
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| CN201510365458.1A CN104948399A (en) | 2015-06-29 | 2015-06-29 | Double-shaft double-speed steam turbine for solar power generation |
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| CN201510365458.1A Pending CN104948399A (en) | 2015-06-29 | 2015-06-29 | Double-shaft double-speed steam turbine for solar power generation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939459A (en) * | 2017-11-23 | 2018-04-20 | 哈尔滨汽轮机厂有限责任公司 | A kind of solar light-heat power-generation level steam turbines such as 50MW |
| CN110005483A (en) * | 2019-04-23 | 2019-07-12 | 重庆江增船舶重工有限公司 | A kind of high-efficiency turbine wheel machine |
| CN116335961A (en) * | 2023-05-31 | 2023-06-27 | 合肥化机装备制造有限公司 | Water pump and water pump system of space engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201078245Y (en) * | 2007-06-15 | 2008-06-25 | 程建平 | Single-stage double-flow steam turbine |
| CN201092939Y (en) * | 2007-08-22 | 2008-07-30 | 江昆铨 | Generator which turbine is driven by solar to generate electric power |
| CN102619961A (en) * | 2012-03-12 | 2012-08-01 | 江苏金通灵流体机械科技股份有限公司 | Double-input high-speed gear transmission box used for steam turbine |
| CN102926825A (en) * | 2012-11-14 | 2013-02-13 | 江苏金通灵流体机械科技股份有限公司 | Quick-start steam turbine set and operation process thereof |
| CN202937317U (en) * | 2012-11-14 | 2013-05-15 | 江苏金通灵流体机械科技股份有限公司 | Fast starting turboset |
| CN204738917U (en) * | 2015-06-29 | 2015-11-04 | 上海金通灵动力科技有限公司 | Biax double speed steam turbine for solar energy power generation |
-
2015
- 2015-06-29 CN CN201510365458.1A patent/CN104948399A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201078245Y (en) * | 2007-06-15 | 2008-06-25 | 程建平 | Single-stage double-flow steam turbine |
| CN201092939Y (en) * | 2007-08-22 | 2008-07-30 | 江昆铨 | Generator which turbine is driven by solar to generate electric power |
| CN102619961A (en) * | 2012-03-12 | 2012-08-01 | 江苏金通灵流体机械科技股份有限公司 | Double-input high-speed gear transmission box used for steam turbine |
| CN102926825A (en) * | 2012-11-14 | 2013-02-13 | 江苏金通灵流体机械科技股份有限公司 | Quick-start steam turbine set and operation process thereof |
| CN202937317U (en) * | 2012-11-14 | 2013-05-15 | 江苏金通灵流体机械科技股份有限公司 | Fast starting turboset |
| CN204738917U (en) * | 2015-06-29 | 2015-11-04 | 上海金通灵动力科技有限公司 | Biax double speed steam turbine for solar energy power generation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939459A (en) * | 2017-11-23 | 2018-04-20 | 哈尔滨汽轮机厂有限责任公司 | A kind of solar light-heat power-generation level steam turbines such as 50MW |
| CN110005483A (en) * | 2019-04-23 | 2019-07-12 | 重庆江增船舶重工有限公司 | A kind of high-efficiency turbine wheel machine |
| CN116335961A (en) * | 2023-05-31 | 2023-06-27 | 合肥化机装备制造有限公司 | Water pump and water pump system of space engine |
| CN116335961B (en) * | 2023-05-31 | 2023-08-04 | 合肥化机装备制造有限公司 | Water pump and water pump system of space engine |
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Application publication date: 20150930 |