CN107131132B - A kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems - Google Patents
A kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems Download PDFInfo
- Publication number
- CN107131132B CN107131132B CN201710299027.9A CN201710299027A CN107131132B CN 107131132 B CN107131132 B CN 107131132B CN 201710299027 A CN201710299027 A CN 201710299027A CN 107131132 B CN107131132 B CN 107131132B
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- Prior art keywords
- axial flow
- flow compressor
- axis stream
- turning
- carbon dioxide
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of supercritical carbon dioxide axial flow compressor and axis stream to turning turbine systems, including axial flow compressor, axis stream are to turning turbine, load and heater；Axis stream forms coaxial configuration by low-pressure shaft and axial flow compressor to the first output end for turning turbine；Axis stream forms coaxial configuration by high-pressure shaft and load to the second output terminal for turning turbine；The entrance of the sender property outlet connection heater of axial flow compressor, the outlet connecting shaft stream of heater is to the working medium entrances for turning turbine.Using this new structure, so that structural volume is small, simple and compact for structure and have higher efficiency, and shaft is to turning so that structure Whole power square reduces, to improve the safety and stability of structure.
Description
Technical field
The present invention relates to axial flow impeller machine power output structures, in particular to one kind is using supercritical carbon dioxide as work
The axial flow compressor of matter and axis stream are to turning turbine systems.
Background technique
Using air as traditional Brayton cycle power output structure of working medium often have volume is larger, temperature parameter it is high with
And auxiliary system it is more the disadvantages of.
Summary of the invention
The purpose of the present invention is to propose to a kind of axial flow compressors of supercritical carbon dioxide and axis stream to turbine systems are turned, in fact
Existing power output small in size, simple and compact for structure and high-efficient.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems, including axial flow compressor, axis stream pair
Turn turbine, load and heater；Axis stream forms coaxial knot by low-pressure shaft and axial flow compressor to the first output end for turning turbine
Structure；Axis stream forms coaxial configuration by high-pressure shaft and load to the second output terminal for turning turbine；The sender property outlet of axial flow compressor
The entrance of heater is connected, the outlet connecting shaft stream of heater is to the working medium entrances for turning turbine.
Further, axial flow compressor and axis stream are supercritical carbon dioxide to the working medium for turning to flow in turbine.
Further, carbon dioxide working medium pressure rise in axial flow compressor, temperature increases in the heater, thus shape
Be higher than 7.38MPa at pressure, temperature is higher than 500 DEG C of supercritical carbon dioxide, then in axis stream to turning expansion work in turbine；
Axis stream will can be converted into rotational kinetic energy in the carbon dioxide working medium of high temperature and pressure to turbine is turned, and be compressed by low-pressure shaft band moving axis stream
Machine work, is exported by high pressure axial load.
Further, the sender property outlet side of axial flow compressor and axis stream are provided with the working medium entrances side for turning turbine dry
Hermetic seal component.
Further, axial flow compressor uses single-stage or double-stage compressor.
Further, to turn turbine be 2+1/2+1 level Four turbine.
Further, to turning the preceding two-stage of turbine and rear two-stage respectively on both axes, and preceding two grade blade and rear two-stage leaf
Piece has opposite established angle, and high-pressure shaft is fixedly connected with to two-stage before turning turbine, and low-pressure shaft is fixed with to two-stage after turning turbine
Connection.
Further, high-pressure shaft and low-pressure shaft are formed to turn, and rotation direction is opposite.
Further, a kind of supercritical carbon dioxide axial flow compressor and axis stream are to the output power for turning turbine systems
For 40-50MW.
Further, system two sides shaft end is equipped with transverse bearing.
Further, axial flow compressor is connected with starting motor.
Compared with the existing technology, the present invention has the effect that
The Brayton cycle using supercritical carbon dioxide as working medium is used, so that structural volume is small, simple and compact for structure
And it has higher efficiency；Using axial flow compressor and axis stream to the system for turning turbine, pneumatic efficiency is improved, is further subtracted
Light architecture quality, and shaft is to turning so that structure Whole power square reduces, to improve the safety and stabilization of structure
Property.
Detailed description of the invention
Fig. 1 is a kind of supercritical carbon dioxide axial flow compressor of the present invention and axis stream to the schematic diagram for turning turbine systems；
Fig. 2 is the present invention to the schematic diagram for turning turbine.
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
Compared to air, supercritical carbon dioxide has the characteristics that density is big, viscosity is small, is able to achieve under lesser pressure drop
Larger enthalpy drop, so having the superperformance applied to power cycle, and its power output structure often has small in size, efficiency
The advantages that high, can be effectively reduced device fabrication and operation expense.Based on the above advantage, the present invention proposes a kind of overcritical
The axial flow compressor of carbon dioxide and axis stream are small in size, simple and compact for structure and high-efficient to realize to turning turbine systems
Power output.
It please referring to described in Fig. 1, the present invention is a kind of supercritical carbon dioxide axial flow compressor and axis stream to turning turbine systems,
Include: left radial bearing 1, axial flow compressor 2, dry gas seals 3, axis stream to turn turbine 4, right radial bearing 5, load 6, plus
Hot device 7.Axis stream forms coaxial configuration, the end of low-pressure shaft A by low-pressure shaft A and axial flow compressor 2 to the last two-stage for turning turbine 4
It is mounted on left radial bearing 1；Axis stream forms coaxial configuration by high-pressure shaft B and load 6 to the preceding two-stage for turning turbine 4；It is high
The end of last item B is mounted on right radial bearing 5.The entrance of the sender property outlet connection heater 7 of axial flow compressor 2, heater 7
Outlet connecting shaft stream to the working medium entrances for turning turbine 4.The sender property outlet side of axial flow compressor 2 and axis stream are to turning turbine 4
Working medium entrances side is provided with dry gas seals component 3.Axial flow compressor 2 is connected with starting motor (not shown).
Working medium is successively flowed by axial flow compressor 2, heater 7 and axis stream to turning turbine 4.Carbon dioxide is in axis stream pressure
Pressure rise in contracting machine 2, temperature increases in heater 7, so that it is super higher than 500 DEG C higher than 7.38MPa, temperature to form pressure
Critical carbon dioxide, then in axis stream to turning expansion work in turbine 4.Axis stream is to turning turbine 4 for the carbon dioxide of high temperature and pressure
It can be converted into rotational kinetic energy in working medium, drive axial flow compressor 2 to work by low-pressure shaft A, carried out by high-pressure shaft B to load 6
Output.
Axial flow compressor 2 uses single-stage or double-stage compressor, and axis stream uses the level Four turbine of 2+1/2+1 to turbine 4 is turned.
Axis stream of the present invention to the schematic diagram for turning turbine 4 as shown in Fig. 2, wherein low-pressure shaft A connect the turbine two-stage it is low
It arbitrarily downgrades, wherein penult does not have stator blade structure, only includes movable vane C；High-pressure shaft B connects the two-stage hiigh pressure stage of the turbine.Two-stage
The blade of hiigh pressure stage and two-stage low-pressure stage is respectively provided with opposite established angle, so that the rotation direction phase of low-pressure shaft A and high-pressure shaft B
Instead, thus formed to turn.Supercritical carbon dioxide successively passes through two-stage high pressure grade blade and two-stage low pressure along Working fluid flow direction
Grade blade pushes low-pressure shaft A and high-pressure shaft B to turn, is externally exported, output power can reach 40-50MW.
Using the axial flow compressor and axis stream of this supercritical carbon dioxide to turning turbine systems so that structural volume it is small,
It is simple and compact for structure and have higher efficiency；In addition, axis stream improves pneumatic efficiency to turbine structure is turned, further mitigate
Architecture quality, and shaft to turn so that structure Whole power square reduce, to improve the safety and stability of structure.
Claims (6)
1. a kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems, which is characterized in that compressed including axis stream
Machine (2), axis stream are to turning turbine (4), load (5) and heater (7)；
Axis stream forms coaxial configuration by low-pressure shaft (A) and axial flow compressor (2) to the first output end for turning turbine (4)；Axis stream
Coaxial configuration is formed by high-pressure shaft (B) and load (5) to the second output terminal for turning turbine (4)；
The entrance of sender property outlet connection heater (7) of axial flow compressor (2), the outlet connecting shaft stream of heater (7) is to turning saturating
The working medium entrances of flat (4)；
Axial flow compressor (2) uses single-stage or double-stage compressor；
Axis stream is distinguished on both axes the level Four turbine that turbine (4) are 2+1/2+1, preceding two-stage and rear two-stage is turned, and preceding two
Grade blade and rear two grade blade have opposite established angle, and high-pressure shaft is fixedly connected with to two-stage before turning turbine, low-pressure shaft with it is right
Two-stage is fixedly connected after turning turbine.
2. a kind of supercritical carbon dioxide axial flow compressor according to claim 1 and axis stream are to turning turbine systems, special
Sign is that the pressure rise in axial flow compressor (2) of carbon dioxide working medium, temperature increases in heater (7), to form pressure
Power is higher than 7.38MPa, temperature is higher than 500 DEG C of supercritical carbon dioxide, then in axis stream to turning expansion work in turbine (4)；
Axis stream will can be converted into rotational kinetic energy in the carbon dioxide working medium of high temperature and pressure to turbine (4) is turned, and pass through low-pressure shaft (A) band moving axis
Compressor (2) work is flowed, is exported by high-pressure shaft (B) to load (5).
3. a kind of supercritical carbon dioxide axial flow compressor according to claim 1 and axis stream are to turning turbine systems, special
Sign is, it is close that the sender property outlet side of axial flow compressor (2) and axis stream are provided with dry gas to the working medium entrances side for turning turbine (4)
It seals component (3).
4. a kind of supercritical carbon dioxide axial flow compressor according to claim 1 and axis stream are to turning turbine systems, special
Sign is, a kind of supercritical carbon dioxide axial flow compressor and axis stream are 40-50MW to the output power for turning turbine systems.
5. a kind of supercritical carbon dioxide axial flow compressor according to claim 1 and axis stream are to turning turbine systems, special
Sign is that low pressure the tip of the axis and high pressure the tip of the axis are mounted on transverse bearing.
6. a kind of supercritical carbon dioxide axial flow compressor according to claim 1 and axis stream are to turning turbine systems, special
Sign is that axial flow compressor is connected with starting motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299027.9A CN107131132B (en) | 2017-04-27 | 2017-04-27 | A kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299027.9A CN107131132B (en) | 2017-04-27 | 2017-04-27 | A kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems |
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| Publication Number | Publication Date |
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| CN107131132A CN107131132A (en) | 2017-09-05 |
| CN107131132B true CN107131132B (en) | 2019-10-11 |
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| CN201710299027.9A Active CN107131132B (en) | 2017-04-27 | 2017-04-27 | A kind of supercritical carbon dioxide axial flow compressor and axis stream are to turning turbine systems |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0242103A (en) * | 1988-08-02 | 1990-02-13 | Mitsubishi Heavy Ind Ltd | Pressure reducing turbine and steam compressor |
| JP2012145092A (en) * | 2011-01-12 | 2012-08-02 | Shintaro Ishiyama | Centrifugal blower (compressor) for compressing supercritical carbon dioxide (co2), supercritical co2 gas turbine, and supercritical co2 gas turbine electric power generation technique including electric power generator |
| US9388817B1 (en) * | 2011-03-24 | 2016-07-12 | Sandia Corporation | Preheating of fluid in a supercritical Brayton cycle power generation system at cold startup |
| KR20130047952A (en) * | 2011-11-01 | 2013-05-09 | 대우조선해양 주식회사 | Liquid cargo carrier and operating method of it |
| US20160047308A1 (en) * | 2014-08-15 | 2016-02-18 | General Electric Company | Mechanical drive architectures with low-loss lubricant bearings and low-density materials |
| KR101674804B1 (en) * | 2015-04-22 | 2016-11-09 | 두산중공업 주식회사 | Supercritical CO2 generation system |
| KR101638287B1 (en) * | 2015-04-22 | 2016-07-11 | 두산중공업 주식회사 | Supercritical CO2 generation system |
| CN105201579A (en) * | 2015-10-16 | 2015-12-30 | 上海晶电新能源有限公司 | Supercritical carbon dioxide power generation system based on secondary reflection condensation heat-absorption technique |
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| CN107131132A (en) | 2017-09-05 |
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