CN109505724A - A kind of axial-flow type counter rotating fish friendly turbine installation - Google Patents
A kind of axial-flow type counter rotating fish friendly turbine installation Download PDFInfo
- Publication number
- CN109505724A CN109505724A CN201811558518.1A CN201811558518A CN109505724A CN 109505724 A CN109505724 A CN 109505724A CN 201811558518 A CN201811558518 A CN 201811558518A CN 109505724 A CN109505724 A CN 109505724A
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- Prior art keywords
- rotor
- wheel
- fish
- axial
- turbine installation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/04—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. propeller turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
-
- 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
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention belongs to field of fluid machinery, disclose a kind of axial-flow type counter rotating fish friendly turbine installation, the turbine installation makes full use of inner-outer birotor to turning the advantages that permanent-magnetic synchronous motor rotor iron core utilization rate is high, power density is high, compact-sized, traditional single-turn wheel unit is designed as birotor to the structure of rotation, double runner blade carries out fish close friend design, not only efficiently reduce unit vibration, and the lift of pump operating condition is improved under conditions of guaranteeing hydraulic turbine efficient operation, and improve the performance of reverse flow；Since forward and reverse pump operating condition revolving speed is relatively high, the revolving speed of pump inlet runner is reduced to reduce the fish death rate by frequency converter, compared to traditional bulb tubular hydraulic generating set, not only protects ecological environment, but also improves water energy comprehensive utilization.
Description
Technical field
The invention belongs to field of fluid machinery, in particular to a kind of axial-flow type counter rotating fish friendly turbine installation.
Background technique
The energy is the basis and premise of a national national economic development.Low-carbon, cleaning, sustainable new energy have become
For the inevitable requirement of social development, fewer and fewer with fossil fuels such as coal, petroleum, the specific gravity of thermoelectricity will subtract gradually
It is few.So instead will be Non-energy-consumption and free of contamination generation of electricity by new energy, hydroelectric generation because of its reserves and feasibility,
Maximum one piece will be become in generation of electricity by new energy.
The common Tubular Pump hydraulic turbine has a large amount of piscine organisms to pass through power generation since its runner diameter is larger in rivers and lakes
Life is all seriously threatened when unit, and hydroelectric generator is hydroelectric pith, hydroelectric generator it is reasonable efficiently
Using that will be hydroelectric key technique, present hydroelectric generator be all single blade wheel structure, and waterpower utilization rate is lower,
Bilobed wheel is such as made into rotation structure, it can be achieved that water energy secondary use, and leads to more double runners designs, it can effectively less fish
The death rate, as the development and application of double-rotor machine make it possible bilobed wheel to rotation structure formula generating set.Difference
In generating set traditional on tidal power station, two runners just generate two opposite unilateral torques when counter-rotation simultaneously, when
Rationally, two torques can be completely counterbalanced by for power of motor distribution.Inner-outer birotor using special construction is to turning permanent-magnet synchronous
Motor has many advantages, such as that rotor core utilization rate is high, power density is high, compact-sized compared with the conventional motors with power.
Patent publication No. is a kind of fish friendly based on fish survival rate prediction of CN105626573A in the prior art
Axial-flow pump, the design method of the invention provides a kind of fish friendly axial-flow pump based on fish survival rate prediction, using mathematics
Model prediction pumps design parameter and fish by the relationship between survival rate, and the fish friendly of axial-flow pump is thus instructed to set
Meter.Mathematical model mainly includes blade inlet edge hit probability and impact death rate, and hit probability is that fish pass through at blade inlet edge
The time of flow section and impeller turn over a ratio of the blade away from required time, and impact death rate and stroke speed, fish are long
Degree is related with blade inlet edge thickness, and stroke speed takes the velocity component of vertical leading, which effectively improves fish and pass through greatly
The survival rate of medium-sized axial-flow pump avoids fish damage and death, but the invention does not reduce fish and enters the general of rotating machinery
Rate, fish still damage larger in the case where the operating of runner higher speed.
Patent publication No. is a kind of fish close friend axis sky axial-flow pump of CN106015013A in the prior art, this removes traditional axis
The axle construction of pump is flowed, originally axis, impeller and guide vane structure is replaced by Zhou Kong axial wheel mechanism, Zhou Kong guide vane mechanism, entire axis
Empty axial wheel mechanism drives its rotation by external belt pulley, the firm part of the wheel of impeller and guide vane be it is hollow, not only increase
The area of passage of liquid, and a channel has been stayed by axial-flow pump to the rivers such as fish sea class biology, in Zhou Kong axial wheel mechanism
The preceding imitative cone-shaped of installation is slipped through the net, and when axial-flow pump work, for fish under the drive of liquid, cone-shaped, which is slipped through the net, plays protection work
With, pass through it from the empty part of the hub spindle of impeller and guide vane, ensure that the life security of the rivers such as fish sea class biology, but the hair
It is bright so that set structure becomes complicated huge, too many energy can be lost under generating operation mode, is not particularly suited for multi-state turbine
Tool.
Summary of the invention
It is asked for the generally existing reversed efficiency of the more single impeller tubular turbine of current domestic and international application is lower
Topic and raising power station fish survival rate, the present invention provides a kind of axial-flow type counter rotating fish friendly turbine installations.The present invention
It is designed using birotor symmetrical structure, realizes that birotor is counter-rotation to magneto is turned by centre, efficiently avoid passing
The problem of guide vane of uniting is interfered with impeller, by traditional S type airfoil fan Transform Type design, effectively improve fish survival rate；In addition,
The lift of pump operating condition is also improved under conditions of meeting hydraulic turbine efficient operation to rotation dual-rotor structure, double-rotor machine is also
Have many advantages, such as that rotor core utilization rate is high, power density is high, compact-sized, outer coil shares a line end, not only saves
Material, also reduces rotary inertia.The present invention has rational design, stable to rotation double runner, and axial torque is small, and inside and outside
Birotor is small in size, with small vibration to permanent magnet synchronous motor is turned.
What the invention is realized by the following technical scheme:
A kind of axial-flow type counter rotating fish friendly turbine installation, the turbine installation include two to the left wheel of rotation, turn right
Wheel, the straight guide vane of activity and double-rotor machine part；Left wheel and right wheel are axially and symmetrically installed, and double-rotor machine two is arranged in
Side, the straight guide vane of activity are evenly arranged in double-rotor machine surrounding；Left wheel is connect by axis one with rotor one, and right wheel is logical
Axis two is crossed to connect with rotor two；Motor stator is arranged between rotor one and rotor two, and passes through bearing one
It is fixed with bearing two；Rotor two is fixedly mounted on axis two, and axis two is fixed by bearing two and bearing three；Rotor one
It is fixed by bearing one and bearing three；
Tell that two are designed as friendly " S " type of fish to the left wheel and right wheel vane airfoil profile of rotation.
The turbine installation is in positive pump condition infralevoversion wheel speed n1Less than right-hand rotation wheel speed n2, under reversed pump condition
Right-hand rotation wheel speed n2Less than left-hand rotation wheel speed n1, the equal no more than 3 of the number of blade of left wheel and right wheel.
The left wheel and right wheel are separately connected independent frequency converter, and runner direction of rotation is depending on work operating condition.
The motor shares a set of stator winding, and two rotors are connectionless independently of each other.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention is by the way that turning, magneto realization birotor is counter-rotation, and birotor is arranged in the structure of motor two sides
Design had not only met the lift for improving pump operating condition under conditions of hydraulic turbine efficient operation, but also has efficiently avoided tradition and lead
Leaf and impeller interfere serious problem, to improve survival rate of the fish in runner.
2. the inner-outer birotor of special construction of the present invention is to turning permanent magnet synchronous motor, compared with the conventional motors with power
Have many advantages, such as that rotor core utilization rate is high, power density is high, compact-sized, outer coil shares a line end, not only saves
Material, also reduces rotary inertia, and magneto small volume is conducive to bimodal current flowing and stablizes.
3. the left wheel in the present invention is counter-rotation with right wheel, it is different from traditional tubular generator group, two turn
Wheel just generates two opposite unilateral torques when counter-rotation simultaneously, when power of motor distribution is reasonable, two torques can be complete
It is complete to offset, unit vibration can be effectively reduced.
4. left wheel and right-hand rotation impeller blade redesign in the present invention, it is few that traditional single impeller multiple-blade is reduced to bilobed wheel
Blade rotary wheel retrofits to vane inlet section, reduces hit probability and impact force that fish are subject to by impeller.
5. the present invention by frequency converter, reduces the revolving speed of import runner under forward and reverse pump condition, outlet runner is improved
Revolving speed, under the premise of ensure that pump performance, the reduction of import runner revolving speed is conducive to be detached from turbine fortune during fish swimming
Suction when turning fundamentally has prevented the phenomena of mortality that fish are involved in rotating machinery.
6. the present invention makes full use of inner-outer birotor to turning, permanent-magnetic synchronous motor rotor iron core utilization rate is high, power density
Traditional single-turn wheel tubular generator group is designed as birotor to the structure of rotation, double runner leaf by the advantages that high, compact-sized
Piece carries out fish close friend design, not only efficiently reduces unit vibration, but also mention under conditions of guaranteeing hydraulic turbine efficient operation
The high lift of pump operating condition, and improve the performance of reverse flow；Since forward and reverse pump operating condition revolving speed is relatively high, lead to
Crossing frequency converter reduces the revolving speed of pump inlet runner to reduce the fish death rate, compared to traditional scaled bulb tubular hydraulic generator
Group not only protects ecological environment, but also improves water energy comprehensive utilization.
Detailed description of the invention
Fig. 1 is a kind of tidal power station of the present invention with to rotation double runner fish close friend's turbine；
Fig. 2 is runner bucket remodeling schematic diagram of the present invention；
In figure, 1. left wheels；2. axis one；3. rotor one；4. motor stator；5. rotor two；6. axis two；7. right
Runner；8. bearing one；9. bearing two；10. bearing three；11. the straight guide vane of activity.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention
It is not limited to this.
Fig. 1 show a kind of tidal power station of the present invention with to rotation double runner fish close friend's turbine, and the tidal power station is with to rotation
Double runner fish close friend's turbine, including left wheel 1, axis 1, rotor 1, motor stator 4, rotor 25, axis 26, the right side
Runner 7, the straight guide vane 11 of activity；
Main two, the turbine to the left wheel 1 and right wheel 7 of rotation, the straight guide vane 11 of activity and double-rotor machine part group
At；Left wheel 1 and right wheel 7 are axially and symmetrically installed, and double-rotor machine two sides are arranged in, and the straight guide vane 11 of activity is evenly arranged in double
Rotor electric machine surrounding；Left wheel 1 is connect by axis 1 with rotor 1, and right wheel 7 passes through axis 26 and rotor 25
Connection；Motor stator 4 is arranged between rotor 1 and rotor 25, and fixed by bearing 1 and bearing 29；
Rotor 25 is fixedly mounted on axis 26, and axis two is fixed by bearing 29 and bearing 3 10；Rotor 1 passes through axis
It is fixed with bearing 3 10 to hold 1
Tell that two are designed as friendly " S " type of fish to the left wheel 1 and 7 vane airfoil profile of right wheel of rotation.
Preferably, the turbine installation is in positive 1 revolving speed n of pump condition infralevoversion wheel1Less than 7 revolving speed n of right wheel2, reversing pump
7 revolving speed n of operating condition lower right runner2Less than 1 revolving speed n of left wheel1, single runner number of blade no more than 3.
Preferably, the left wheel 1 and right wheel 7 are separately connected independent frequency converter, and runner direction of rotation is according to work
Depending on operating condition.
Preferably, the motor shares a set of stator winding, and two rotors are connectionless independently of each other.
It is illustrated in figure 2 runner bucket remodeling schematic diagram of the present invention.By traditional tubular runner bucket aerofoil profile inlet segment
Remove, water exit end is counterclockwise 180 ° of swivel replication obtain S aerofoil profile, profile thickness is thickeied by 791 aerofoil profiles, to S aerofoil profile intake-outlet
Cavetto.With the angle of runner bucket entrance when modified aerofoil profile reduces fish vertically into runner, fish are improved
Survival rate.
Working principle of the present invention:
According to the corner for needing the straight guide vane 11 of adjusting activity in power station, when forward and reverse hydraulic turbine condition, water flow makees driving source,
Assuming that water flow flows to right side from left side, left wheel 1 rotates in the forward direction under the action of water flow, and the motor being connected with axis 1 is driven to turn
Son 1 rotates in same direction, and right wheel 7 reversely rotates under the action of water flow, drives the rotor 25 being connected with axis 26 in the same direction
Rotation；When forward and reverse pump operating condition, motor makees driving source, and motor, which is powered, generates rotating excitation field, it is assumed that rotor 1 is just
To rotation, the left wheel 1 being connected with axis 1 is driven to rotate in same direction, rotor 25 reversely rotates, what drive was connected with axis 26
Right wheel 7 rotates in same direction, and frequency divider controls the revolving speed of left wheel 1 and right wheel 7 respectively.Those listed above is a series of in detail
Illustrate illustrating only for possible embodiments of the invention, the protection model that they are not intended to limit the invention
Enclose, it is all without departing from equivalent embodiment made by technical spirit of the present invention or change should be included in protection scope of the present invention it
It is interior.
Claims (4)
1. a kind of axial-flow type counter rotating fish friendly turbine installation, which is characterized in that the turbine installation includes two left sides to rotation
Runner (1), right wheel (7), the straight guide vane (11) of activity and double-rotor machine part；Left wheel (1) and right wheel (7) are axially symmetric
Installation, is arranged in double-rotor machine two sides, and the straight guide vane (11) of activity is evenly arranged in double-rotor machine surrounding；Left wheel (1) is logical
It crosses axis one (2) to connect with rotor one (3), right wheel (7) is connect by axis two (6) with rotor two (5)；Motor stator
(4) it is arranged between rotor one (3) and rotor two (5), and fixed by bearing one (8) and bearing two (9)；Motor
Rotor two (5) is fixedly mounted on axis two (6), and axis two (6) is fixed by bearing two (9) and bearing three (10)；Rotor one
(3) fixed by bearing one (8) and bearing three (10)；
Tell two left wheels (1) to rotation) and right wheel (7) vane airfoil profile be designed as friendly " S " type of fish.
2. a kind of axial-flow type counter rotating fish friendly turbine installation as described in claim 1, which is characterized in that in positive pump condition
Infralevoversion wheel (1) revolving speed n1Less than right wheel (7) revolving speed n2, in reversed pump condition infradextroversion wheel (7) revolving speed n2Less than left wheel
(1) revolving speed n1。
3. a kind of axial-flow type counter rotating fish friendly turbine installation as described in claim 1, which is characterized in that left wheel (1) and
The equal no more than 3 of the number of blade of right wheel (7).
4. a kind of axial-flow type counter rotating fish friendly turbine installation as described in claim 1, which is characterized in that the left wheel
(1) and right wheel (7) is separately connected independent frequency converter, and runner direction of rotation is depending on work operating condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558518.1A CN109505724A (en) | 2018-12-19 | 2018-12-19 | A kind of axial-flow type counter rotating fish friendly turbine installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558518.1A CN109505724A (en) | 2018-12-19 | 2018-12-19 | A kind of axial-flow type counter rotating fish friendly turbine installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109505724A true CN109505724A (en) | 2019-03-22 |
Family
ID=65753714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811558518.1A Pending CN109505724A (en) | 2018-12-19 | 2018-12-19 | A kind of axial-flow type counter rotating fish friendly turbine installation |
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| Country | Link |
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| CN (1) | CN109505724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123995A (en) * | 2021-04-21 | 2021-07-16 | 清华大学 | Fish-friendly axial-flow type vane pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040042897A1 (en) * | 2001-01-11 | 2004-03-04 | Paolo Pietricola | Turbine engine |
| CN102400843A (en) * | 2011-10-26 | 2012-04-04 | 哈尔滨工程大学 | Flow guide reaction type double-rotor tidal current energy water turbine |
| US20140021722A1 (en) * | 2012-07-17 | 2014-01-23 | Romax Technology Limited | Dual Rotor Wind or Water Turbine |
| CN204741395U (en) * | 2015-06-25 | 2015-11-04 | 金陵科技学院 | Sub - permanent magnetism linear generator of low -speed cylindric double acting |
| CN106930893A (en) * | 2015-12-31 | 2017-07-07 | 吴华秀 | Pneumatic Wave Power machine |
| CN206957856U (en) * | 2017-07-20 | 2018-02-02 | 三峡大学 | A kind of runner system of parent population profile shaft flow water turbine |
-
2018
- 2018-12-19 CN CN201811558518.1A patent/CN109505724A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040042897A1 (en) * | 2001-01-11 | 2004-03-04 | Paolo Pietricola | Turbine engine |
| CN102400843A (en) * | 2011-10-26 | 2012-04-04 | 哈尔滨工程大学 | Flow guide reaction type double-rotor tidal current energy water turbine |
| US20140021722A1 (en) * | 2012-07-17 | 2014-01-23 | Romax Technology Limited | Dual Rotor Wind or Water Turbine |
| CN204741395U (en) * | 2015-06-25 | 2015-11-04 | 金陵科技学院 | Sub - permanent magnetism linear generator of low -speed cylindric double acting |
| CN106930893A (en) * | 2015-12-31 | 2017-07-07 | 吴华秀 | Pneumatic Wave Power machine |
| CN206957856U (en) * | 2017-07-20 | 2018-02-02 | 三峡大学 | A kind of runner system of parent population profile shaft flow water turbine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123995A (en) * | 2021-04-21 | 2021-07-16 | 清华大学 | Fish-friendly axial-flow type vane pump |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190322 |
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| RJ01 | Rejection of invention patent application after publication |