CN107448246A - A kind of supercritical carbon dioxide turbine generators - Google Patents
A kind of supercritical carbon dioxide turbine generators Download PDFInfo
- Publication number
- CN107448246A CN107448246A CN201710621043.5A CN201710621043A CN107448246A CN 107448246 A CN107448246 A CN 107448246A CN 201710621043 A CN201710621043 A CN 201710621043A CN 107448246 A CN107448246 A CN 107448246A
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- Prior art keywords
- bearing
- carbon dioxide
- turbine
- supercritical carbon
- stator
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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
- 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
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
- F01D25/22—Lubricating arrangements using working-fluid or other gaseous fluid as lubricant
-
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
Abstract
The invention discloses a kind of supercritical carbon dioxide turbine generators, the supercritical carbon dioxide generator main will be by electric machine casing and its internal stator coil set, rotor, bearing forms, bearing is using supercritical carbon dioxide as lubrication working medium, bearing exhaust is introduced into turbine exit flow, turbine generators structure proposed by the present invention, motor, turbine is coaxially connected with sealing structure, eliminate traditional shaft coupling connection, with compact-sized and simple, the advantages that power density is high, the exhaust of bearing gas is introduced into turbine exit flow, realize zero leakage, the turbine generators of the present invention simultaneously, oil-free in whole experimental prototype, without air, suitable for microminiature supercritical carbon dioxide power cycle.
Description
Technical field
The present invention relates to a kind of TRT, especially a kind of supercritical carbon dioxide turbine generators.
Background technology
It is the supercritical carbon dioxide electricity generation system of core technology in cogeneration side using supercritical carbon dioxide turbine machine
There is a broad application advantage in face, all technical be better than water vapour Rankine cycle system and current state-of-the-art
Organic rankine cycle system, particularly there is obvious advantage in terms of generating efficiency and equipment volume.
In supercritical carbon dioxide power cycle, supercritical carbon dioxide turbine generator is as heat-work(- electricity conversion
Core drive equipment, one of be its subsequent applications with the key of development.Using 10MWe generated outputs as boundary, generated electricity more than 10MWe
The supercritical carbon dioxide turbine machine of power can use commercial technology, and its technology maturity and financial cost are relatively low, and small
It is saturating in supercritical carbon dioxide turbine generator integrated high-speed magneto, gas bearing, the high parameter of 10MWe generated outputs
Equality high-tech, it is to influence supercritical carbon dioxide power cycle using the key with demonstration.
The content of the invention
(1) technical problems to be solved
In view of this, the present invention provides a kind of supercritical carbon dioxide turbine generators, to solve the above problems.
(2) technical scheme
A kind of supercritical carbon dioxide turbine generators, including electric machine casing, stator, rotor and bearing, stator are fixed on
In electric machine casing, bearing is set between rotor and electric machine casing, for supporting rotor to be rotated relative to stator, the axle
Hold using supercritical carbon dioxide as lubrication working medium.
In some exemplary embodiments of the invention, rotor includes turbine wheel, and generator is provided with turbine at turbine wheel
Import and turbine outlet, turbine import are used to supercritical carbon dioxide being passed through turbine wheel acting, and turbine, which exports, to be used for acting
Supercritical carbon dioxide discharge turbine generators afterwards.
In some exemplary embodiments of the invention, electric machine casing is provided with bearing air admission hole, for from hull outside to axle
Hold and be passed through supercritical carbon dioxide；Electric machine casing is provided with bearing steam vent, for the supercritical carbon dioxide that will be discharged from bearing
Discharge housing.
In some of the invention exemplary embodiments, bearing air admission hole connection turbine import, for from turbine entrance
Part supercritical carbon dioxide is distributed in supercritical carbon dioxide air-flow and is passed through bearing；The outlet of bearing steam vent connection turbine,
Supercritical carbon dioxide for will be discharged from bearing is imported in turbine exit flow.
In some exemplary embodiments of the invention, air accumulator and pressure are provided between turbine import and bearing air admission hole
Control valve；Air accumulator entrance connects turbine import, divides for storing from the supercritical carbon dioxide air-flow of turbine entrance
The part supercritical carbon dioxide of outflow；Pressure control valve is connected between reservoir outlet and bearing air admission hole, for controlling
System is passed through the pressure of the supercritical carbon dioxide of bearing；Suction pump is provided between bearing steam vent and turbine outlet, for inciting somebody to action
The supercritical carbon dioxide of bearing discharge is imported in turbine exit flow.
In some exemplary embodiments of the invention, stator includes stator core and stator coil, is set in stator core
There is a stator cooling duct, electric machine casing, which offers, to be led to the stator cooling gas passed to outside electric machine casing from stator cooling duct and enter
Mouth and the outlet of stator cooling gas；The outlet of stator cooling gas import connection turbine, the overcritical dioxy of low temperature for turbine to be exported
Change carbon is introduced into stator cooling duct to be cooled down to stator；Stator cooling gas outlet connection turbine outlet, for stator is cold
But the supercritical carbon dioxide in passage leads back turbine outlet.
In some exemplary embodiments of the invention, the electric machine casing also includes spiral case and air deflector, overcritical dioxy
Change carbon working medium and enter spiral case from turbine import first, the supercritical carbon dioxide in spiral case is then introduced by turbine by air deflector
Wheel.
In some exemplary embodiments of the invention, rotor also includes permanent magnetism rotating shaft, and turbine wheel is by way of micro- interference
Permanent magnetism rotating shaft one end is connected to, is fixed axially through locking nut.
In some exemplary embodiments of the invention, electric machine casing also includes pressure-bearing shell, bearing holder (housing, cover), end cap, bearing pressure
The static element of lid and dry gas seals；Pressure-bearing shell is cylindrical in shape, and the static element of bearing holder (housing, cover), bearing gland and dry gas seals, which is arranged on, to be held
One end of pressure shell body, bearing gland are provided with the shaft hole worn for permanent magnetism rotating shaft, and permanent magnetism rotating shaft is arranged in the rotating shaft hole site
There is a revolving part of dry gas seals, the bearing holder (housing, cover), bearing gland, the revolving part of the static element of dry gas seals and dry gas seals will be held
Press shell one end sealing；End cap is arranged on the pressure-bearing shell other end, for the pressure-bearing shell other end to be sealed；The bearing gland
On be additionally provided with labyrinth seal.
In some of the invention exemplary embodiments, bearing include purely radial bearing, radial direction-thrust joint bearing and it is pure only
Thrust bearing；Purely radial bearing is set between bearing holder (housing, cover) and permanent magnetism rotating shaft, and radial direction-thrust joint bearing connects with pure thrust bearing
In the permanent magnetism rotating shaft other end, it is set between pressure-bearing shell and permanent magnetism rotating shaft.
(3) beneficial effect
A kind of supercritical carbon dioxide turbine generators proposed by the present invention, it is coaxial with high-speed permanent magnet motor using turbine
Integrated design mode, electric generator structure is compact, and power density is high；Bearing lubrication uses supercritical carbon dioxide with motor cooling
Working medium, oil-free is without air, simple system；Using dry gas seals by the way of close encapsulation is combined, zero leakage is realized, is applied to
Microminiature supercritical carbon dioxide power cycle.
Brief description of the drawings
Fig. 1 is the structure sectional view of supercritical carbon dioxide turbine generators provided in an embodiment of the present invention；
Fig. 2 is turbine wheel provided in an embodiment of the present invention and volute structure schematic diagram；
Fig. 3 is supercritical carbon dioxide greasing provided in an embodiment of the present invention and cooling procedure schematic diagram.
【Symbol description】
1- pressure-bearing shells；2- bearing holder (housing, cover)s；3- end caps；4- spiral cases；5- air deflectors；6- dry gas seals static elements；7- dry gas is close
Seal revolving part；8- permanent magnetism rotating shafts；9- turbine wheels；10- locking nuts；The purely radial bearings of 11-；12- radial direction-thrust combined bearings；
The pure thrust bearings of 13-；14- stator coils；15- bearing steam vents；16- bearing air admission holes；17- stator cores；18- stators cool down
Passage；19- labyrinth seals；20- bearing glands；21- stators cool down gas import；The outlet of 22- stators cooling gas.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in further detail.
The embodiment of the present invention provides a kind of supercritical carbon dioxide turbine generators, and Fig. 1 is provided in an embodiment of the present invention
The structure sectional view of supercritical carbon dioxide turbine generators, as shown in figure 1, supercritical carbon dioxide turbine generators includes electricity
Casing body and its internal stator, rotor and the bearing set.
It is close that electric machine casing includes pressure-bearing shell 1, bearing holder (housing, cover) 2, end cap 3, spiral case 4, air deflector 5, bearing gland 20 and dry gas
The static element 6 of envelope.Pressure-bearing shell 1 is substantially cylindrical, and the static element 6 of bearing holder (housing, cover) 2, bearing gland 20 and dry gas seals is arranged on
One end of pressure-bearing shell, bearing gland 20 are provided with the shaft hole worn for permanent magnetism rotating shaft 8, and permanent magnetism rotating shaft 8 is in the rotating shaft hole site
Place is arranged with the revolving part of dry gas seals, the rotation of the bearing holder (housing, cover), bearing gland, the static element of dry gas seals and dry gas seals
Part seals pressure-bearing shell one end, and air deflector 5 and spiral case 4 are arranged on the outside of the sealed end, and end cap 3 is arranged on pressure-bearing shell 1
The other end.The other end of pressure-bearing shell is sealed.
Stator includes stator core 17 and stator coil 14, and stator core 17 is fixed on pressure-bearing shell by way of interference
In 1.
Rotor includes permanent magnetism rotating shaft 8, turbine wheel 9, the revolving part 7 and locking nut 10 of dry gas seals, and permanent magnetism rotating shaft 8 is set
In the cental axial position of pressure-bearing shell 1, permanent magnet is provided with the position of corresponding stator coil 14, the permanent magnetism in permanent magnetism rotating shaft 8
Body is radially fixed, turbine wheel 9 and dry gas seals revolving part 7 are logical using the annular magnetic steel of double semi-ring magnet steel compositions with protective case
The mode for crossing micro- interference is connected to the one end of permanent magnetism rotating shaft 8, is fixed axially through locking nut 10.Rotor is connected to by bearing and held
On pressure shell body.Turbine wheel 9 and high-speed permanent magnetic rotating shaft are coaxially connected, eliminate traditional coupler structure, make overcritical titanium dioxide
Carbon turbine generators structure is compacter.
Turbine wheel can be radial-flow type or axial-flow type, and in the present embodiment, turbine wheel uses radial-flow type, and Fig. 2 is real for the present invention
The turbine wheel and volute structure schematic diagram of example are applied, as shown in Fig. 2 supercritical carbon dioxide working medium enters snail from turbine import first
Shell 4, the supercritical carbon dioxide in spiral case 4 is then introduced by turbine wheel 9 by air deflector 5, supercritical carbon dioxide is from turbine
Wheel radial enters, and discharge is exported from central axial turbine wheel after being done work to turbine wheel, and turbine wheel is by supercritical carbon dioxide work
Interior energy in matter is converted into rotation function, drives the high-speed permanent magnetic electrical power generators of coaxial rotating, exports electric energy.
Bearing includes purely radial bearing 11, radial direction-thrust joint bearing 12 and pure thrust bearing 13, and purely radial bearing 11 is pacified
Between bearing holder (housing, cover) 2 and permanent magnetism rotating shaft 8, radial direction-thrust joint bearing 12 and pure thrust bearing 13 are another installed in permanent magnetism rotating shaft 8
One end, it is set between housing and permanent magnetism rotating shaft 8, radial direction-thrust joint bearing 12 is positioned at the pure outside of thrust bearing 13.It is purely radial
Bearing 11, radial direction-thrust joint bearing 12 and pure thrust bearing 13 are gas bearing, using supercritical carbon dioxide as profit
Sliding working medium, bearing air admission hole 16 is being provided with the purely radial correspondence position of bearing 11, bearing holder (housing, cover) 2 and pressure-bearing shell, for pure footpath
Supercritical carbon dioxide is passed through to bearing；In the correspondence position with radial direction-thrust joint bearing 12 and pure thrust bearing 13, pressure-bearing
Housing is also provided with bearing air admission hole 16, for being passed through overcritical dioxy to radial direction-thrust joint bearing 12 and pure thrust bearing 13
Change carbon；Bearing steam vent 15 is also provided with bearing holder (housing, cover) and pressure-bearing shell simultaneously, for super facing what is discharged from purely radial bearing
Boundary's carbon dioxide discharge housing, and the overcritical titanium dioxide that radial direction-thrust joint bearing 12 and pure thrust bearing 13 are discharged
Carbon discharges housing.
The supercritical carbon dioxide part that external air source provides enters spiral case by turbine import, fractional transmission to bearing,
A part of supercritical carbon dioxide is distributed from the supercritical carbon dioxide air-flow of turbine entrance be passed through bearing.Such as Fig. 3
Shown, bearing air admission hole 16 is connected with bearing air supply system in generator external, and bearing air supply system includes air accumulator and pressure
Control valve, the supercritical carbon dioxide part that external air source provides enter spiral case by turbine import, partly into air accumulator,
A part of supercritical carbon dioxide that air accumulator storage distributes from turbine inlet air flow, reservoir outlet and bearing air admission hole
Pressure control valve is connected between 16, for controlling the pressure for the supercritical carbon dioxide for being passed through bearing.
The supercritical carbon dioxide of bearing discharge is imported in the supercritical carbon dioxide air-flow of turbine outlet discharge, such as Fig. 2
Shown, bearing steam vent 15 is connected with suction pump in generator external, and the supercritical carbon dioxide for bearing to be discharged introduces
In the air-flow of turbine outlet.
The thrust performance design of pure thrust bearing, radial direction-thrust combined bearing need to combine supercritical carbon dioxide turbine and produce
Axial force caused by raw axial force and Design of PM Motor carries out co-design.
The sealing means of supercritical carbon dioxide turbine generators move by the way of dynamic sealing mixes sealing with static seal
Sealing is mixed with labyrinth seal 19 using dry gas seals seal by the way of, static seal is by the way of close encapsulation, wherein dry gas
Sealing means form dynamic pressure blanket gas using dynamic pressure helicla flute between dry gas seals revolving part 7 and the static element of dry gas seals 6
Film, reaches sealing effectiveness, end cap 3 in close encapsulation mode such as Fig. 1.
Turbine generators is cooled down using supercritical carbon dioxide working medium, as shown in figures 1 and 3, in stator core 17
Stator cooling duct 18 is provided with, stator cooling duct 18 offers stator cooling gas import 21 and stator cooling gas outlet 22.
The low temperature supercritical carbon dioxide part for being exported turbine by stator cooling gas import 21 and pipeline introduces stator cooling duct
Stator core 17 is cooled down in 18, gas outlet 22 is then cooled down by stator again and pipeline imports supercritical carbon dioxide
The air-flow discharge of turbine outlet.
The supercritical carbon dioxide turbine generators of the present invention, running speed exist in more than 60000rpm, generated output
50kW~200kW, turbine generators only have a kind of working medium of supercritical carbon dioxide, and oil-free is without air；Turbine wheel and high-speed permanent magnetic
Rotating shaft is coaxially connected, eliminates traditional coupler structure, makes turbine generators compact-sized, and power density is high；Bearing gas
Exhaust is introduced into turbine exit flow, realizes zero leakage, and supercritical carbon dioxide turbine generators of the invention is applied to small
Type supercritical carbon dioxide power cycle generator.
It should also be noted that, the direction term mentioned in embodiment, for example, " on ", " under ", "front", "rear", " left side ",
" right side " etc., only it is the direction of refer to the attached drawing, is not used for limiting the scope of the invention.Through accompanying drawing, identical element by
Same or like reference represents.When the understanding of the present invention may be caused to cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each part do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present invention
Content.In addition, in the claims, any reference symbol between bracket should not be configured to the limit to claim
System.
Unless there are known entitled phase otherwise meaning, the numerical parameter in this specification and appended claims are approximations, energy
Enough required characteristic changings according to as obtained by present disclosure.Specifically, it is all to be used in specification and claim
The numeral of the middle content for representing composition, reaction condition etc., it is thus understood that repaiied by the term of " about " in all situations
Decorations.Generally, the implication of its expression refers to include by specific quantity ± 10% change in certain embodiments, at some
± 5% change in embodiment, ± 1% change in certain embodiments, in certain embodiments ± 0.5% change.
Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.Before element
Word "a" or "an" does not exclude the presence of multiple such elements.
In addition, unless specifically described or the step of must sequentially occur, the order of above-mentioned steps, which has no, is limited to above institute
Row, and can change or rearrange according to required design.And above-described embodiment can based on design and reliability consideration, that
This mix and match uses using or with other embodiment mix and match, i.e., the technical characteristic in different embodiments can be with independent assortment
Form more embodiments.
Similarly, it will be appreciated that in order to simplify the present invention and help to understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the invention should be construed to reflect following intention：I.e. required guarantor
The application claims of shield features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, inventive aspect is less than all features of single embodiment above invented.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail bright, it should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., the protection of the present invention should be included in
Within the scope of.
Claims (10)
1. a kind of supercritical carbon dioxide turbine generators, including electric machine casing, stator, rotor and bearing, stator are fixed on electricity
In casing body, bearing is set between rotor and electric machine casing, for supporting rotor to be rotated relative to stator, the bearing
Using supercritical carbon dioxide as lubrication working medium.
2. supercritical carbon dioxide turbine generators according to claim 1, wherein, rotor includes turbine wheel, generator
Turbine import and turbine outlet are provided with turbine wheel, turbine import is done for supercritical carbon dioxide to be passed through into turbine wheel
Work(, turbine are exported for the supercritical carbon dioxide after acting to be discharged into turbine generators.
3. supercritical carbon dioxide turbine generators according to claim 1 or 2, wherein,
Electric machine casing is provided with bearing air admission hole, for being passed through supercritical carbon dioxide from hull outside to bearing；
Electric machine casing is provided with bearing steam vent, and the supercritical carbon dioxide for will be discharged from bearing discharges housing.
4. supercritical carbon dioxide turbine generators according to claim 3, wherein,
Bearing air admission hole connects turbine import, super for distributing part from the supercritical carbon dioxide air-flow of turbine entrance
Critical carbon dioxide is passed through bearing；
The outlet of bearing steam vent connection turbine, the supercritical carbon dioxide for will be discharged from bearing import turbine exit flow
In.
5. supercritical carbon dioxide turbine generators according to claim 4, wherein,
Air accumulator and pressure control valve are provided between turbine import and bearing air admission hole；Air accumulator entrance connection turbine enters
Mouthful, for storing the part supercritical carbon dioxide distributed from the supercritical carbon dioxide air-flow of turbine entrance；Pressure
Control valve is connected between reservoir outlet and bearing air admission hole, for controlling the pressure for the supercritical carbon dioxide for being passed through bearing
Power；
Suction pump is provided between bearing steam vent and turbine outlet, the supercritical carbon dioxide for bearing to be discharged imports saturating
In flat exit flow.
6. supercritical carbon dioxide turbine generators according to claim 2, wherein,
Stator includes stator core and stator coil, is provided with stator cooling duct in stator core, electric machine casing offer from
Lead to the stator cooling gas import passed to outside electric machine casing and the outlet of stator cooling gas in stator cooling duct；
The outlet of stator cooling gas import connection turbine, the low temperature supercritical carbon dioxide for turbine to be exported introduce stator cooling
Stator is cooled down in passage；
The outlet of stator cooling gas outlet connection turbine, goes out for the supercritical carbon dioxide in stator cooling duct to be led back into turbine
Mouthful.
7. supercritical carbon dioxide turbine generators according to claim 2, wherein, the electric machine casing also includes spiral case
, then will be super in spiral case by air deflector and air deflector, supercritical carbon dioxide working medium enter spiral case from turbine import first
Critical carbon dioxide introduces turbine wheel.
8. supercritical carbon dioxide turbine generators according to claim 2, wherein, rotor also includes permanent magnetism rotating shaft, thoroughly
Flat wheel is connected to permanent magnetism rotating shaft one end by way of micro- interference, is fixed axially through locking nut.
9. supercritical carbon dioxide turbine generators according to claim 8, wherein,
Electric machine casing also includes the static element of pressure-bearing shell, bearing holder (housing, cover), end cap, bearing gland and dry gas seals；
Pressure-bearing shell is cylindrical in shape, and the static element of bearing holder (housing, cover), bearing gland and dry gas seals is arranged on one end of pressure-bearing shell, bearing
Gland is provided with the shaft hole worn for permanent magnetism rotating shaft, and permanent magnetism rotating shaft is arranged with the rotation of dry gas seals in the rotating shaft hole site
Part, the bearing holder (housing, cover), bearing gland, the revolving part of the static element of dry gas seals and dry gas seals seal pressure-bearing shell one end；
End cap is arranged on the pressure-bearing shell other end, for the pressure-bearing shell other end to be sealed；
Labyrinth seal is additionally provided with the bearing gland.
10. supercritical carbon dioxide turbine generators according to claim 9, wherein, bearing includes purely radial bearing, footpath
To-thrust joint bearing and pure thrust bearing；
Purely radial bearing is set between bearing holder (housing, cover) and permanent magnetism rotating shaft, and radial direction-thrust joint bearing and pure thrust bearing are connected to
The permanent magnetism rotating shaft other end, is set between pressure-bearing shell and permanent magnetism rotating shaft.
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Cited By (7)
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| CN108223557A (en) * | 2018-01-10 | 2018-06-29 | 东方电气集团东方汽轮机有限公司 | A kind of bearing arrangement lubricated using supercritical carbon dioxide |
| CN110439634A (en) * | 2019-08-19 | 2019-11-12 | 哈尔滨电气股份有限公司 | One kind being used for direct connection natural gas radial-inflow turboexpaner generating equipment |
| CN112112689A (en) * | 2020-09-22 | 2020-12-22 | 联优机械(常熟)有限公司 | ORC waste heat power generation turbo expander and high-speed motor matching structure |
| CN112385125A (en) * | 2018-07-09 | 2021-02-19 | 西门子能源美国公司 | Supercritical CO2 cooled electric machine |
| CN113606006A (en) * | 2021-08-18 | 2021-11-05 | 重庆江增船舶重工有限公司 | Supercritical carbon dioxide turbine compression all-in-one machine |
| CN113931705A (en) * | 2021-11-02 | 2022-01-14 | 上海发电设备成套设计研究院有限责任公司 | Turbine rotor device and operation method thereof |
| US11725536B2 (en) | 2020-12-22 | 2023-08-15 | Hamilton Sundstrand Corporation | Combination seal for a supercritical carbon dioxide turbo generator |
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| CN205840927U (en) * | 2016-07-28 | 2016-12-28 | 中国核动力研究设计院 | A kind of turbine power generation unit with supercritical carbon dioxide as working medium |
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| CN108223557B (en) * | 2018-01-10 | 2020-06-23 | 东方电气集团东方汽轮机有限公司 | Bearing structure lubricated by supercritical carbon dioxide |
| CN112385125A (en) * | 2018-07-09 | 2021-02-19 | 西门子能源美国公司 | Supercritical CO2 cooled electric machine |
| US11689080B2 (en) | 2018-07-09 | 2023-06-27 | Siemens Energy, Inc. | Supercritical CO2 cooled electrical machine |
| CN110439634A (en) * | 2019-08-19 | 2019-11-12 | 哈尔滨电气股份有限公司 | One kind being used for direct connection natural gas radial-inflow turboexpaner generating equipment |
| CN112112689A (en) * | 2020-09-22 | 2020-12-22 | 联优机械(常熟)有限公司 | ORC waste heat power generation turbo expander and high-speed motor matching structure |
| CN112112689B (en) * | 2020-09-22 | 2021-09-21 | 联优机械(常熟)有限公司 | ORC waste heat power generation turbo expander and high-speed motor matching structure |
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| CN113931705A (en) * | 2021-11-02 | 2022-01-14 | 上海发电设备成套设计研究院有限责任公司 | Turbine rotor device and operation method thereof |
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Application publication date: 20171208 |