CN104632308B - Compact turbine machine device based on supercritical carbon dioxide Bretton circulation - Google Patents
Compact turbine machine device based on supercritical carbon dioxide Bretton circulation Download PDFInfo
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- CN104632308B CN104632308B CN201410766348.1A CN201410766348A CN104632308B CN 104632308 B CN104632308 B CN 104632308B CN 201410766348 A CN201410766348 A CN 201410766348A CN 104632308 B CN104632308 B CN 104632308B
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- carbon dioxide
- supercritical carbon
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- planetary gear
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Abstract
The invention discloses a compact turbine machine device based on supercritical carbon dioxide Bretton circulation. The compact turbine machine device comprises a plurality of turbines and a plurality of planet wheels; each turbine comprises an output shaft; a gear is fixed to each output shaft; the gears on the output shafts of the multiple turbines are meshed with the planet wheels. The turbines are supercritical carbon dioxide turbines with supercritical carbon dioxide as working media. According to the compact turbine machine device, the supercritical carbon dioxide serves as the working media to drive turbine machines; due to the special physical property of the supercritical carbon dioxide, the structure sizes of the turbine machines can be reduced under the condition that the same power is achieved, the compact turbine machine device has the advantages of controlling the cost of the turbine machines and controlling the mechanical layout, and low-power shaft work output can be achieved through the extremely-small turbine machine size. The multiple supercritical carbon dioxide turbine machines are used as units, the multiple units are connected through the structures of the planet wheels in the same torque direction, and the torque of each unit is transmitted to a main shaft of the total device so as to be capable of achieving larger shaft power output.
Description
[technical field]
The invention belongs to turbomachinery field, particularly relate to a kind of turbomachinery based on supercritical carbon dioxide Brayton cycle
High-power integrating device.
[background technology]
Turbomachinery is the dynamic power machine that the energy, chemical industry and national defence are important, and working medium can produce shaft work by turbomachinery
In order to generate electricity or power drive.Conventional turbomachinery often uses the water vapour deriving from boiler as working medium to drive blade
Rotating, due to the build-in attribute of water vapour, along with the increase of rated power, the increase of turbomachinery size is clearly, logical
Often the TRT Turbine section axial length of 400MW can reach about 30m.The size of turbomachinery determines to a great extent
Its processing cost and installing space, the overall dimensions therefore reducing turbomachinery has great importance.
Supercritical carbon dioxide refers to the supercriticality of carbon dioxide, and the density of medium, specific enthalpy are relatively big in this condition, due to
Its special physical property, the application for supercritical carbon dioxide in recent years starts gradually to increase, such as strengthening convection heat transfer' heat-transfer by convection etc..
As the Brayton cycle that turbomachinery field is common, it is made in the circulating cycle than the working medium of circulation merit, i.e. unit mass
Net work be in an important index, the especially field such as aviation, naval vessel.Promote and can be implemented in equal merit than circulation merit
Reducing the size of machinery under rate, layout and cost control to equipment have important effect.
[summary of the invention]
It is an object of the invention to provide a kind of close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle,
When employing supercritical carbon dioxide is working medium, turbine size less under Same Efficieney can be accomplished.
For achieving the above object, the technical solution of the present invention is:
Close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle, including some turbines and planetary gear；Often
Individual turbine all includes an output shaft；It is respectively and fixedly provided with gear on described output shaft；Gear on the output shaft of some turbines all with
Planetary gear engages.
Preferably, all gears are uniformly distributed in the periphery of planetary gear.
Preferably, described close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle also includes main shaft, main
Axle is fixedly and coaxially connected with planetary gear.
Preferably, described turbine is to use supercritical carbon dioxide as the supercritical carbon dioxide turbine of working medium.
Relative to prior art, the present invention has following technical effect that
1, drive turbomachinery with supercritical carbon dioxide for working medium, due to the physical property that supercritical carbon dioxide is special, reaching
Turbomachinery physical dimension can be reduced under equal-wattage, control turbomachinery cost and mechanical arrangement aspect are had bigger
Advantage, it is possible to achieve minimum turbomachinery size reach low power shaft work output.
2, using multiple supercritical carbon dioxide turbomachinery is unit, utilizes planetary gear structure by multiple unit along same torsion
Square direction connects, and is transferred to the moment of torsion of each unit on overall apparatus main shaft to realize bigger shaft power output.
3, the high-power integrating device of this turbomachinery is fexible unit, can be according to power parameter when actual design type selecting
Choose cell type and quantity, be conducive to the large-scale promotion application of this device.
[accompanying drawing explanation]
Fig. 1 is single supercritical carbon dioxide turbine operating diagram；
Fig. 2 is supercritical carbon dioxide turbine and conventional steam turbine size comparison's schematic diagram under equal proportion；
Fig. 3 is the planetary gear structure of present invention close-coupled based on supercritical carbon dioxide Brayton cycle turbomachinery device
Schematic diagram；
Fig. 4 is the moment of torsion transmission schematic diagram of each turbomachinery unit and main shaft on planetary gear.
[detailed description of the invention]
The a great problem of supercritical carbon dioxide working medium turbomachinery is that dynamic power machine energy-flux density is high, is limited to turbomachinery material
Material mechanical property, it is difficult to realize unit high-power, therefore to realize the general power that its circulation is bigger, the present invention provides a kind of
Close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle, by multiple supercritical carbon dioxide turbine units
Utilizing planetary structure to be combined into a high-power integrating device, this device in order to generate electricity or power drive, and can be greatly reduced
The size of device.
Refer to shown in Fig. 1, for supercritical carbon dioxide turbine operating diagram, supercritical carbon dioxide gas is passed through main
Steam pipe road 1 is passed through in turbine 2, expands and the acting of leaf grating part is formed moment of torsion in turbine 2, and the shaft work that moment of torsion provides leads to
Cross the output shaft 21 that be connected fixing with turbine 2 to export, can be in order to generate electricity or power drive.
Refer to shown in Fig. 2, for the size comparison of supercritical carbon dioxide turbine 2 with conventional water vapour turbine 3, with 400MW
As a example by generating turbomachinery, the axial length of conventional steam turbine is close to 30m, and typically requires and be divided into high, medium and low voltage
A few major part of cylinder, comprises more turbine stage；And when to use supercritical carbon dioxide be working medium, the axial length of carbon dioxide turbine
Only need about 3m, and only need what turbine stage of single cylinder to realize, the structure of Turbine section can be made to simplify significantly.
Refer to shown in Fig. 3, a kind of close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle of the present invention,
Including multiple turbines 2, planetary gear C and principal axis A；It is respectively and fixedly provided with gear B on the output shaft 21 of each turbine 2；Multiple
Gear B on the output shaft 21 of flat 2 all engages with planetary gear C, and is uniformly distributed in the periphery of planetary gear C；Planetary gear
The center of C is fixedly and coaxially connected with principal axis A.In the present invention, the physical dimension of all turbines 2 is identical, and it uses supercritical
Carbon dioxide is as working medium, relative to steam turbine, can reduce size greatly.
Due to the physical property that supercritical carbon dioxide is special, the power of supercritical carbon dioxide turbine can't be accomplished too big at present,
Multiple supercritical carbon dioxide turbine units are connected by the planetary gear structure in the present invention, produce and turn round during the work of each separate unit
Square, moment of torsion is transferred on the main shaft of device produce shaft work by planetary gear structure, and Fig. 4 is each turbomachinery unit and main shaft
Moment of torsion transmission force diagram, the shaft work of all of supercritical carbon dioxide turbine unit all exports to the main shaft of power integration device
Externally acting.
Claims (1)
1. close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle, it is characterised in that if including parching
Flat (2) and planetary gear (C)；Each turbine (2) all includes an output shaft (21)；On described output shaft (21) the most solid
Surely there is gear (B)；Gear (B) on the output shaft (21) of some turbines (2) all engages with planetary gear (C)；
All gears (B) are uniformly distributed in the periphery of planetary gear (C)；
Described close-coupled turbomachinery device based on supercritical carbon dioxide Brayton cycle also includes main shaft (A), main shaft (A)
It is fixedly and coaxially connected with planetary gear (C)；
Described turbine (2) is to use supercritical carbon dioxide as the supercritical carbon dioxide turbine of working medium；
Supercritical carbon dioxide gas is passed through in corresponding turbine (2) by live steam piping (1), expands also in turbine (2)
The acting of leaf grating part is formed moment of torsion, and the shaft work that moment of torsion provides is exported by the output shaft (21) being connected fixing with turbine (2),
Output shaft drives corresponding gear (B) to rotate；All gears (B) rotate to drive planetary gear (C) to rotate, and pass through main shaft
(A) output acting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410766348.1A CN104632308B (en) | 2014-12-11 | 2014-12-11 | Compact turbine machine device based on supercritical carbon dioxide Bretton circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410766348.1A CN104632308B (en) | 2014-12-11 | 2014-12-11 | Compact turbine machine device based on supercritical carbon dioxide Bretton circulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632308A CN104632308A (en) | 2015-05-20 |
| CN104632308B true CN104632308B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410766348.1A Active CN104632308B (en) | 2014-12-11 | 2014-12-11 | Compact turbine machine device based on supercritical carbon dioxide Bretton circulation |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059495A1 (en) * | 2015-10-07 | 2017-04-13 | The University Of Queensland | A turbine |
| CN112796844B (en) * | 2021-01-25 | 2021-12-07 | 北京前沿动力科技股份有限公司 | Connecting structure of single valve and air cylinder of supercritical carbon dioxide power generation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102758653A (en) * | 2011-04-28 | 2012-10-31 | 中国科学院工程热物理研究所 | Multilevel centripetal turbine system |
| 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 |
| CN103806957A (en) * | 2012-11-13 | 2014-05-21 | 曼柴油机和涡轮机欧洲股份公司 | Geared turbine machine |
| CN104047646A (en) * | 2014-06-09 | 2014-09-17 | 中国科学院工程热物理研究所 | Expansion unit with integration of gearbox with dual bisecting surfaces and multistage turbines |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005002702A1 (en) * | 2005-01-19 | 2006-07-27 | Man Turbo Ag | Multi-stage turbocompressor |
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2014
- 2014-12-11 CN CN201410766348.1A patent/CN104632308B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758653A (en) * | 2011-04-28 | 2012-10-31 | 中国科学院工程热物理研究所 | Multilevel centripetal turbine system |
| CN103806957A (en) * | 2012-11-13 | 2014-05-21 | 曼柴油机和涡轮机欧洲股份公司 | Geared turbine machine |
| 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 |
| CN104047646A (en) * | 2014-06-09 | 2014-09-17 | 中国科学院工程热物理研究所 | Expansion unit with integration of gearbox with dual bisecting surfaces and multistage turbines |
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| 燃气轮机业将为太阳能廉价发电铺平道路;李群等;《中国航空报》;20141125;第1-5页 * |
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| CN104632308A (en) | 2015-05-20 |
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