CN109681369A - A kind of flow increasing formula intelligence hydraulic turbine system of the isometrical scroll tail water stream flow-increasing device of band - Google Patents
A kind of flow increasing formula intelligence hydraulic turbine system of the isometrical scroll tail water stream flow-increasing device of band Download PDFInfo
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- CN109681369A CN109681369A CN201811445929.XA CN201811445929A CN109681369A CN 109681369 A CN109681369 A CN 109681369A CN 201811445929 A CN201811445929 A CN 201811445929A CN 109681369 A CN109681369 A CN 109681369A
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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
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of 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
- F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis 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
- F03B3/121—Blades, their form or construction
-
- 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
- F03B3/125—Rotors for radial flow at high-pressure side and axial flow at low-pressure side, e.g. for Francis-type 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
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
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- 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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Abstract
本发明涉及一种带等径螺线形尾水流增流装置的增流式智能水轮机系统，包括贯流式水轮发电机组，其特征在于，还包括等径螺线形尾水流增流装置和尾水流状态控制器，所述等径螺线形尾水流增流装置由受力感应单元、增流传动单元、增流释放单元和带等径螺线形转轮叶片的等径螺线形转轮单元依次平行轴向设置，所述等径螺线形转轮叶片是根据等径螺线沿等径螺线形转轮轮毂轴向逐渐拉伸，呈空间交叉扭曲形状均匀布置在等径螺线形转轮轮毂的周向内壁上，所述尾水流状态控制器分别控制贯流式水轮发电机组转轮叶片的叶片角度β1的大小、等径螺线形转轮叶片的叶片角度β2的大小及感应驱动杆的移动距离x的大小。本发明能够将尾水流中大量的剩余动能用于发电。
The invention relates to a flow-increasing intelligent hydraulic turbine system with an equal-diameter helical tailwater flow increasing device, including a tubular hydro-generator set, and is characterized in that it also includes an equal-diameter helical tailwater flow increasing device and a tailwater flow The state controller, the equal-diameter helical tailwater flow increasing device consists of a force sensing unit, an increasing-current transmission unit, an increasing-current releasing unit and an equal-diameter helical runner unit with equal-diameter helical runner blades in turn parallel to the axis The equal-diameter helical runner blades are gradually stretched along the axial direction of the equal-diameter helical runner hub according to the equal-diameter spiral, and are evenly arranged in the circumferential direction of the equal-diameter helical runner hub in a spatially cross-distorted shape. On the inner wall, the tail water flow state controller respectively controls the size of the blade angle β 1 of the runner blade of the tubular hydro-generator set, the size of the blade angle β 2 of the equal-diameter helical runner blade and the movement of the induction driving rod. The size of the distance x. The present invention can utilize a large amount of residual kinetic energy in the tail water flow for power generation.
Description
Technical field
The invention belongs to technical field of hydroelectric generation, more particularly to a kind of isometrical scroll tail water stream flow-increasing device of band
Flow increasing formula intelligence hydraulic turbine system.
Background technique
China's low-head hydraulic resource very abundant, the resource are typically in the developed area of rivers middle and lower reaches.Closely
In a little years, these regional economic developments are rapid, and power demand speedup is very fast.But these areas are typically all energy shortage area,
Developable middle and high head water power resource had just been developed before the 1990s to be finished.In order to meet this area's economy
The needs of rapid development, people transfer exploitation low water head resource again.Tubular power station is that exploitation low-head hydraulic resource is best
Mode, be generally used for 25m head or less.It has stream compared with middle and high water head power station, low water head vertical axial-flow power station
Road is simple, the hydraulic loss of flow channels is small, set structure is compact, the construction period is short, investment is small, it is fast to produce effects, it is few to flood immigrant
The advantages that.
But structure is complicated, figure is huge, mechanical efficiency is relatively low for bulb-type hydraulic generating set, statistics shows: passing through
The kinetic energy of flow water turbine outlet of rotary wheel water flow accounts for about 45% of gross head or more, maximum reachable 90%.Although there is draft tube to return
This part kinetic energy is received, but due to the excavated volume problem of the Hydraulic Design of draft tube and consideration Practical Project, is recovered energy
Ability or very limited.
Chinese patent application 200810072478.X discloses a kind of " combined type water energy electric generating apparatus ", if the device includes
Dry column installing frame, each column installing frame are equipped with several lateral water flowing ducts along longitudinal direction, and correspondence is set on each column installing frame
There is the lifting eliminator plate to open and close the column installing frame, is respectively equipped with impeller on each lateral water flowing duct, is set to same row
Each impeller shaft rear end be sequentially connected respectively through a pair of of circular cone tumbler gear and a vertical power transmission shaft, through vertical power
Transmission shaft drives the generator for being set to vertical power transmission shaft upper end to work.Although the device can be according to river actual conditions, group
It closes and forms adaptable dam body formula hydroelectric installation, and structure is simple, water flow is easily controllable, but the device does not consider
When different operating conditions, the efficiency of impeller has biggish difference, thereby results in the inefficient of whole device, hydraulic performance is poor.
Chinese patent application 201410205181.1 discloses a kind of " bank base energy gathering type wave energy generating set ", the device
Wave energy can be assembled and wave is converted into the ocean current in pipeline, drive turbine generation using ocean current.Meanwhile bank shrinkage water
Road is in broadening formation, opening be ellipse and be at turbine it is round, the two has very big area ratio, therefore the water flow at turbine
Speed is opening several times, plays the role of cumulative.The device construction is simple, generator are not contacted with seawater, high reliablity, and
And effectively improve the transfer efficiency of water flow.But energy-gathering device disengaging open area is fixed, it cannot be according to speed of incoming flow
Size, dynamic adjust cumulative number, cause the electric energy frequency of output unstable, inferior quality.
Chinese patent application 201510601845.0 discloses a kind of " water conservancy diversion energy gathering type wave, tide, ocean current and wind-force four
Unify electricity generation system ", which sets several arc deflectors being uniformly distributed along the circumference on the base, when wave, tide, ocean current warp
When crossing the present apparatus, seawater will form seawater under the guiding role of arc deflector and be vortexed, since seawater eddy current effect makes thereon
The air of side is formed simultaneously air-swirl, is vortexed in seawater and impeller, air-swirl is pushed to push the collective effect underdrive of fan blade
Kinetic energy is passed to booster engine by pipe high speed rotation, transmission tube, and speedup machine driving generator high speed rotation produces electricl energy.The device gram
The problem that existing generation mode is single, generating efficiency is low has been taken, electricity generation is realized.But the present apparatus only relies on cross section
Shape is that the arc deflector of half moon comes water conservancy diversion, cumulative, and cumulative effect is very little, therefore cannot make full use of water
Can, cause the waste of resource.
In conclusion existing combined hydroelectric power generating equipment is only the series connection of different number power generator, do not consider
The problem of unit efficiency caused by the change of operating condition reduces, therefore fail to give full play to the maximum performance of device.Meanwhile it is poly-
The diminution that energy device relies solely on cross-sectional area carrys out flow increasing, can not adjust the more of flow increasing according to the size dynamic of inlet flow rate
It is few, cause the electric energy frequency of output indefinite, performance is bad.How overcome the deficiencies in the prior art has become current hydroelectric generation skill
One of important problem urgently to be resolved in art field.
Summary of the invention
The purpose of the present invention is provide a kind of isometrical scroll tail water stream flow increasing dress of band in order to overcome the deficiencies of the prior art
The flow increasing formula intelligence hydraulic turbine system set, isometrical scroll tail water stream flow-increasing device of the invention can be according to the tubular water in upstream
The tail water uninterrupted dynamic adjustment flow increasing effect of turbine generator group discharge, and controlled respectively by tail water stream mode controller
Bulb-type hydraulic generating set and isometrical scroll tail water stream flow-increasing device, to guarantee isometrical scroll tail water stream flow-increasing device
The tail water stream energy that can make full use of bulb-type hydraulic generating set discharge, can make again while improving waterpower utilization rate
The excellent electric energy of external generator output quality.
A kind of flow increasing formula intelligence hydraulic turbine system of the isometrical scroll tail water stream flow-increasing device of the band proposed according to the present invention,
Including the bulb-type hydraulic generating set with draft tube, which is characterized in that further include isometrical scroll tail water stream flow-increasing device and
Tail water stream mode controller, the isometrical scroll tail water stream flow-increasing device is by stress sensing unit, flow increasing gear unit, flow increasing
Successively parallel axial direction is arranged releasing unit with the isometrical scroll runner unit with isometrical scroll runner bucket；The isometrical spiral shell
The outlet end of the draft tube of bulb-type hydraulic generating set, the tail water stream mode control is arranged in linear tail water stream flow-increasing device
Device controls the blade angle β of bulb-type hydraulic generating set runner bucket respectively1Size, isometrical scroll runner bucket leaf
Piece angle beta2Size and incude drive rod moving distance x size, and gained deviation delta β1、Δβ2It can be to knot with Δ x
Fruit is corrected, to realize the dynamic adjustment of flow increasing formula intelligence hydraulic turbine system；The isometrical scroll runner unit includes
Pod influent side, isometrical scroll runner bucket, isometrical scroll runner boss, pod, pod water outlet side, runner branch
Support, the isometrical scroll runner bucket, isometrical scroll runner boss are placed in pod, the isometrical scroll runner blade
Piece is axially gradually to be stretched according to isometrical helical along isometrical scroll runner boss, is evenly arranged in space crossed distorted shape
In the inner circumferential wall of isometrical scroll runner boss, the aerofoil section curve key point coordinate such as following table institute of axially different distance
Show, X, Y respectively represent the spatial value of key point, and the coordinate at wheel hub leading edge axial direction 25cm is as shown in table 1:
Table 1
| Serial number | X | Y | Serial number | X | Y |
| 1 | -26.25 | -135.40 | 11 | -20.48 | -136.23 |
| 2 | -23.75 | -120.26 | 12 | -17.95 | -121.26 |
| 3 | -21.27 | -105.11 | 13 | -15.43 | -106.29 |
| 4 | -18.79 | -89.96 | 14 | -12.90 | -91.32 |
| 5 | -16.32 | -74.81 | 15 | -10.38 | -76.35 |
| 6 | -13.83 | -59.67 | 16 | -7.85 | -61.38 |
| 7 | -11.26 | -44.54 | 17 | -5.29 | -46.41 |
| 8 | -8.46 | -29.44 | 18 | -2.66 | -31.46 |
| 9 | -5.01 | -14.49 | 19 | 0.25 | -16.56 |
| 10 | 0.00 | 0.00 | 20 | 4.57 | -2.03 |
Two curvilinear equations after fitting are as follows:
Zuo Xian: y=-0.0465x2+4.7832x-20.405；
Right string: y=-0.0715x2+3.4638x+2.4311；
The coordinate at leading edge axial direction 55cm apart from wheel hub is as shown in table 2:
Table 2
Two curvilinear equations after fitting are respectively as follows:
Zuo Xian: y=0.0008x3+0.0616x2+1.343x+2.2116；
Right string: y=0.0015x3+0.1012x2+1.9534x-1.543。
The output power P of the flow increasing formula intelligence hydraulic turbine system and the blade of bulb-type hydraulic generating set runner bucket
Angle beta1, isometrical scroll runner bucket blade angle β2With the relational expression of the moving distance x of induction drive rod are as follows:In formula: ρ is the density of water, and ρ value is 1000kg/m3, Q be pass through flow increasing formula
The flow of intelligent hydraulic turbine system；The control parameter of flow increasing formula intelligence hydraulic turbine system is as shown in table 3:
Table 3
The stress sensing unit of the isometrical scroll tail water stream flow-increasing device include stress tablet and induction drive rod,
The flow increasing gear unit includes gear, rack gear, flow increasing balancing spring, the flow increasing releasing unit include upper movable rod, under
Movable rod, top sheave, lower sheave, upper rail, lower railway, upper flow control plate, lower flow control plate；The stress tablet and induction are driven
Lever connection, the induction drive rod are fixedly connected with gear, the wheel and rack engagement, the right end of the rack gear and flow increasing
The left end of balancing spring connects, and the left end of the rack gear connects with one end of upper movable rod and one end of lower movable rod respectively
It connects, the upper movable rod is connect by top sheave with upper flow control plate, and the lower movable rod passes through lower sheave and lower flow control plate
Connection, the upper flow control plate and top sheave are embedded in upper rail, and the lower flow control plate and lower sheave are embedded in lower railway.
The tail water stream mode controller includes power controller, signal processor, hydraulic controller and executing agency, institute
Stating executing agency includes push-plate and rotating bar, is divided in the bulb-type hydraulic generating set wheel hub and isometrical scroll runner boss
Not She Zhi executing agency, the push-plate by rotating bar respectively with bulb-type hydraulic generating set runner bucket, isometrical scroll
The center of runner bucket connects, and the rotating bar is around bulb-type hydraulic generating set runner bucket and isometrical scroll runner bucket
Center rotating, the hydraulic controller piston rod are connect with push-plate, the stress in the isometrical scroll tail water stream flow-increasing device
Tablet is controlled by the control signal of signal processor.
Realization principle of the invention is: after the starting of flow increasing formula intelligence hydraulic turbine system, water flow first passes around through-flow type hydro-turbo
The water inlet flow channel of generating set bypasses vertical shaft and bulb, and velocity circulation is formed at the guide vane of bulb-type hydraulic generating set
It converges afterwards and is combined into runner, water impact bulb-type hydraulic generating set runner bucket is turned by bulb-type hydraulic generating set
The energy of water flow is converted to rotating mechanical energy by impeller blade, while driving generator to turn by being placed in the intracorporal combination bearing of light bulb
Son rotation, converts mechanical energy into electric energy, subsequent water flow enters the draft tube of bulb-type hydraulic generating set, due in tail water
There is a large amount of remaining kinetic energy, therefore water flow continues into isometrical scroll tail water stream flow-increasing device；By stress tablet according to
Signal is passed to tail water stream mode controller by the size of inlet flow rate Q, and signal processor is handled and fed back to signal,
The signal of feedback controls induction drive rod, by induction drive rod successively with moving gear, rack gear, upper movable rod, lower work
Dynamic connecting rod, and then the position of upper flow control plate, lower flow control plate is adjusted, realize the purpose for changing flow increasing effect in real time；Finally
Water flow enters isometrical scroll runner unit by pod influent side, and the acting of channel angular scroll runner bucket makes remaining
Kinetic energy is converted to the rotating mechanical energy of isometrical scroll runner, then passes torque to the external generator being attached thereto and carries out
Mechanical energy is again converted to electric energy to realize by power generation, to a large amount of existing at bulb-type hydraulic generating set outlet of rotary wheel
Remaining kinetic energy is made full use of.In the flow increasing formula intelligence hydraulic turbine system operational process, tail water stream mode controller root
According to the size of flow, real-time bulb-type hydraulic generating set and isometrical scroll runner unit are calculated by power controller
Optimum Leaves angle, the blade angle β with real-time bulb-type hydraulic generating set runner bucket1And isometrical scroll runner
The blade angle β of blade2Compare, gained deviation delta β1With Δ β2Be converted to after PI correction link current signal pass to it is hydraulic
Controller；Hydraulic controller drives and pushes away by controlling hydraulic controller piston rod and being moved with real-time current vs
Disk movement, finally adjusts the blade angle of bulb-type hydraulic generating set and isometrical scroll runner unit by rotating bar
Section, makes bulb-type hydraulic generating set and isometrical scroll runner unit that can keep peak efficiency under different flow, from
And guaranteeing waterpower utilization rate highest of the entire flow increasing formula intelligence hydraulic turbine system under different operating conditions, output power is maximum.
Its remarkable advantage is the present invention compared with prior art:
First, a kind of flow increasing formula intelligence hydraulic turbine system of the isometrical scroll tail water stream flow-increasing device of band proposed by the present invention
It is to add isometrical scroll tail water stream flow-increasing device and the control of tail water stream mode on the basis of bulb-type hydraulic generating set
Device solves the problems, such as that the generally existing tubular turbine tail water kinetic energy of the prior art is remaining excessive, is tubular
The development of turbine-generator units provides new solution, has filled up the technological gap of this field.
Second, isometrical scroll tail water stream flow-increasing device proposed by the present invention can be adaptive according to the size of upstream flowrate
Adjust two flow control plates position with answering makes it under different flows, generates corresponding flow increasing effect, turns for isometrical scroll
Wheel unit is preferably provided safeguard using tail water energy and the excellent electric energy of output quality.
The structure of third, isometrical scroll runner unit proposed by the present invention is simple, and size is small, easy to process, it is economical at
This is low, and water flow in isometrical scroll runner bucket can Uniform Flow, the friction loss inside water flow is small, be able to maintain compared with
High efficiency can be used as the upgraded product of the prior art.
4th, tail water stream mode controller proposed by the present invention can either adjust the isometrical scroll tail water stream flow increasing dress of control
The flow increasing effect set, and can be according to the difference of flow, dynamic adjusts bulb-type hydraulic generating set and isometrical scroll runner
The blade angle of unit, to enable water flow utilization rate highest of the flow increasing formula intelligence hydraulic turbine system under different flow, output
Power is maximum.
Detailed description of the invention
Fig. 1 is a kind of flow increasing formula intelligence hydraulic turbine system of the isometrical scroll tail water stream flow-increasing device of band proposed by the present invention
Overall structure diagram.
Fig. 2 is structural representation when isometrical scroll tail water stream flow-increasing device proposed by the present invention is in full closing state
Figure.
Fig. 3 is structural representation when isometrical scroll tail water stream flow-increasing device proposed by the present invention is in semi-open state
Figure.
Fig. 4 is structural representation when isometrical scroll tail water stream flow-increasing device proposed by the present invention is in full open state
Figure.
Fig. 5 is the schematic perspective view of isometrical scroll runner proposed by the present invention.
Fig. 6 is the channel size labeling position schematic diagram of isometrical scroll runner unit proposed by the present invention.
Fig. 7 is the working principle block flowsheet schematic diagram of tail water stream mode controller proposed by the present invention.
Fig. 8 is the link position schematic diagram of hydraulic controller proposed by the present invention and executing agency.
Number explanation in attached drawing: water inlet flow channel 1, vertical shaft 2, combination bearing 3, guide vane 4, bulb 5, generator 6, tubular
It is seat 7, bulb-type hydraulic generating set runner bucket 8, runner 9, wheel hub 10, draft tube 11, tail water stream mode controller 12, isometrical
Scroll tail water stream flow-increasing device 13, stress tablet 13-1, induction drive rod 13-2, gear 13-3, flow increasing balancing spring 13-
4, rack gear 13-5, upper movable rod 13-7, lower movable rod 13-6, top sheave 13-8, lower sheave 13-9, upper flow control plate 13-10,
Lower flow control plate 13-13, upper rail 13-11, lower railway 13-12, pod influent side 13-14, isometrical scroll runner bucket 13-
15, isometrical scroll runner boss 13-16, pod 13-17, pod water outlet side 13-18, runner support 13-19, rotating bar
14, the diameter D of push-plate 15, hydraulic controller piston rod 16, hydraulic controller 17, isometrical scroll runner bucket 13-154, lead
The import internal diameter D of stream cover 13-171, pod 13-17 import outer diameter D2, pod 13-17 outlet diameter D3, isometrical helical
The diameter D of shape runner boss 13-16h。
Specific embodiment
A specific embodiment of the invention is described in further detail with reference to the accompanying drawings and examples.
In conjunction with Fig. 1, the invention proposes a kind of flow increasing formula intelligence hydraulic turbines of the isometrical scroll tail water stream flow-increasing device of band
System, including band 11 bulb-type hydraulic generating set of draft tube, further include isometrical scroll tail water stream flow-increasing device 13 and tail water
Stream mode controller 12, the isometrical scroll tail water stream flow-increasing device 13 is by stress sensing unit, flow increasing gear unit, flow increasing
Successively parallel axial direction is arranged releasing unit with the isometrical scroll runner unit with isometrical scroll runner bucket 13-15；It is described
The outlet end of the draft tube 11 of bulb-type hydraulic generating set, the tail water is arranged in isometrical scroll tail water stream flow-increasing device 13
Stream mode controller 12 controls the blade angle β of bulb-type hydraulic generating set runner bucket 8 respectively1Size, isometrical helical
The blade angle β of shape runner bucket 13-152Size and incude drive rod 13-2 moving distance x size, and gained is inclined
Poor Δ β1、Δβ2Result can be corrected with Δ x, to realize the dynamic adjustment of flow increasing formula intelligence hydraulic turbine system；It is described
Isometrical scroll runner unit includes pod influent side 13-14, isometrical scroll runner bucket 13-15, isometrical scroll turn
It takes turns wheel hub 13-16, pod 13-17, pod water outlet side 13-18, runner and supports 13-19, the isometrical scroll runner blade
Piece 13-15, isometrical scroll runner boss 13-16 are placed in pod 13-17, the isometrical scroll runner bucket 13-15
Quantity be 2~5, the isometrical scroll runner bucket 13-15 is according to isometrical helical along isometrical scroll runner boss
13-16 is axially gradually stretched, and is evenly arranged in the week of isometrical scroll runner boss 13-16 inwardly in space crossed distorted shape
On wall, the aerofoil section curve key point coordinate of axially different distance is as shown in the table, and the space that X, Y respectively represent key point is sat
Scale value, the coordinate at wheel hub leading edge axial direction 25cm are as shown in table 1:
Table 1
Two curvilinear equations after fitting are as follows:
Zuo Xian: y=-0.0465x2+4.7832x-20.405；
Right string: y=-0.0715x2+3.4638x+2.4311；
The coordinate at leading edge axial direction 55cm apart from wheel hub is as shown in table 2:
Table 2
| Serial number | X | Y | Serial number | X | Y |
| 1 | -78.2195 | -121.44 | 11 | -64.3183 | -126.74 |
| 2 | -77.3415 | -103.11 | 12 | -63.3745 | -109.70 |
| 3 | -75.7135 | -84.83 | 13 | -62.0647 | -92.69 |
| 4 | -72.8195 | -66.72 | 14 | -60.0177 | -75.75 |
| 5 | -68.0094 | -49.02 | 15 | -56.7177 | -59.01 |
| 6 | -60.5498 | -32.28 | 16 | -51.4981 | -42.78 |
| 7 | -49.7756 | -17.48 | 17 | -43.5944 | -27.69 |
| 8 | -35.4449 | -6.13 | 18 | -32.3517 | -14.92 |
| 9 | -18.26 | 0.04 | 19 | -17.6752 | -6.41 |
| 10 | 0 | 0.00 | 20 | -0.8578 | -4.93 |
Two curvilinear equations after fitting are respectively as follows:
Zuo Xian: y=0.0008x3+0.0616x2+1.343x+2.2116；
Right string: y=0.0015x3+0.1012x2+1.9534x-1.543；
The bulb-type hydraulic generating set include water inlet flow channel 1, vertical shaft 2, bulb 5, generator 6, combination bearing 3,
Tubed skin flap 7, guide vane 4, runner 9, bulb-type hydraulic generating set runner bucket 8, wheel hub 10, draft tube 11, the generator 6 with
Runner 9 is connected by combination bearing 3, and the generator 6 is placed in bulb 5 with combination bearing 3, and the bulb 5 is with tubular
It is supported based on seat 7, the strong and torque of institute suffered by unit all passes through support and is transmitted in concrete foundation.
In conjunction with Fig. 2, Fig. 3 and Fig. 4, the stress sensing unit packet of isometrical scroll tail water stream flow-increasing device of the present invention
Include stress tablet 13-1 and induction drive rod 13-2, the flow increasing gear unit includes that gear 13-3, rack gear 13-5, flow increasing are flat
Weigh spring 13-4, and the flow increasing releasing unit includes upper movable rod 13-7, lower movable rod 13-6, top sheave 13-8, glides
Take turns 13-9, upper rail 13-11, lower railway 13-12, upper flow control plate 13-10, lower flow control plate 13-13；The stress tablet 13-1
Area a meet relational expression:In formula: ρ is the density of water, and ρ value is 1000kg/m3, A be upper flow control plate 13-10
Or area, the Q of lower flow control plate 13-130Stress tablet 13-1 is subject to when flow, F when for rated power are rated power
Power；The stress tablet 13-1 is connect with induction drive rod 13-2, and the length of the induction drive rod 13-2 is 50~90cm,
The induction drive rod 13-2 is fixedly connected with gear 13-3, and the number of teeth of the gear 13-3 is 35~55, the gear 13-
3 centers are fixed with wall surface, make gear 13-3 is only rotatable can not move left and right, the gear 13-3 is engaged with rack gear 13-5, institute
The right end for stating the length 30~90cm, the rack gear 13-5 of rack gear 13-5 is connect with the left end of flow increasing balancing spring 13-4, described
The length of flow increasing balancing spring 13-4 is 20~35cm, the left end of rack gear 13-5 one end with upper movable rod 13-7 respectively
It is connected with one end of lower movable rod 13-6, the upper movable rod 13-7 is connected by top sheave 13-8 and upper flow control plate 13-10
Connect, the lower movable rod 13-6 is connect by lower sheave 13-9 with lower flow control plate 13-13, the upper flow control plate 13-10 with it is upper
Pulley 13-8 is embedded in upper rail 13-11, and the lower flow control plate 13-13 and lower sheave 13-9 are embedded in lower railway 13-12.
In conjunction with Fig. 5 and Fig. 6, the diameter D of isometrical scroll runner boss 13-16 of the present inventionhWith isometrical scroll
The diameter D of runner bucket 13-154Ratio be 0.43~0.78；The import internal diameter D of the pod 13-171With isometrical helical
The diameter D of shape runner bucket 13-154Ratio be 1.25~1.50；The import outer diameter D of the pod 13-172With isometrical spiral shell
The diameter D of linear runner bucket 13-154Ratio be 1.33~1.65；The outlet diameter D of the pod 13-173With it is isometrical
The diameter D of scroll runner bucket 13-154Ratio be 1.53~1.80.
In conjunction with Fig. 7, tail water stream mode controller 12 of the present invention includes power controller, signal processor, hydraulic
Controller 17 and executing agency, the stress tablet 13-1 in the isometrical scroll tail water stream flow-increasing device 13 is by signal processing
The control signal of device controls, and the tail water stream mode controller 12 controls bulb-type hydraulic generating set runner bucket 8 respectively
Blade angle β1Size, isometrical scroll runner bucket 13-15 blade angle β2Size and induction drive rod 13-2
The size of moving distance x, and gained deviation delta β1、Δβ2Result can be corrected with Δ x, to realize flow increasing formula intelligence
The dynamic of hydraulic turbine system adjusts；The output power P and bulb-type hydraulic generating set runner of flow increasing formula intelligence hydraulic turbine system
The blade angle β of blade 81, isometrical scroll runner bucket 13-15 blade angle β2And induction drive rod 13-2 movement away from
Relational expression from x are as follows:In formula: Q is to pass through flow increasing formula intelligence hydraulic turbine system
Flow；The control parameter of the flow increasing formula intelligence hydraulic turbine system is as shown in table 3:
Table 3
The configuration requirement of tail water stream mode controller 12 are as follows: PLC power controller etc. can be used in the power controller；Institute
Stating signal processor can be used digital signal processor etc.；Electric hydraulic controller etc. can be used in the hydraulic controller 17.
In conjunction with Fig. 8, bulb-type hydraulic generating set wheel hub 10 of the present invention and isometrical scroll runner boss 13-16
Executing agency is inside respectively set, the executing agency includes push-plate 15 and rotating bar 14, and the push-plate 15 is disc-shaped structure, institute
State push-plate 15 by rotating bar 14 respectively with bulb-type hydraulic generating set runner bucket 8 and isometrical scroll runner bucket 13-
15 center connection, the rotating bar 14 be right-angle structure, the quantity of the rotating bar 14 respectively with tubular-turbine generator
The quantity of group runner bucket 8 and isometrical scroll runner bucket 13-15 are equal, and the rotating bar 14 is around tubular-turbine generator
The center rotating of group runner bucket 8 and isometrical scroll runner bucket 13-15, the rotating bar 14 are connected with push-plate 15 using bolt
It connects, the quantity of bolt is 3~6, and the push-plate 15 of the hydraulic controller piston rod 16 and executing agency connects, the push-plate 15
The direction of motion it is consistent with the direction of motion of piston rod 22.
A kind of flow increasing formula intelligence hydraulic turbine system of the isometrical scroll tail water stream flow-increasing device of band proposed by the present invention is answered
It is as follows with embodiment:
The design scheme of embodiment 1 is identical with the above-mentioned overall technological scheme of the present invention, the design of main component
Parameter is announced as follows:
The quantity of isometrical scroll runner bucket 13-15 of the invention is 2；Isometrical scroll runner bucket 13-15's
Diameter D4For 300cm；The diameter D of isometrical scroll runner boss 13-16hFor 135cm；The import internal diameter D of pod 13-171For
The import outer diameter D of 405cm, pod 13-172For the outlet diameter D of 450cm, pod 13-173For 510cm；Stress tablet
The area a of 13-1 is 20cm2；The diameter of push-plate 15 is 400cm；The long 150cm of the short side of rotating bar 14, long side length 250cm；It is hydraulic
The length of controller piston rod 16 is 350cm；The length for incuding drive rod 13-2 is 60cm；The number of teeth of gear 13-3 is 40；
The length of flow increasing balancing spring 13-4 is 25cm；Flow is 3m3/s、β1For 63.75 °, β2When being 50 °, the flow increasing formula intelligence hydraulic turbine
The output power of system is 608kW.
The design scheme of embodiment 2 is identical with the above-mentioned overall technological scheme of the present invention, the design of main component
Parameter is announced as follows:
The quantity of isometrical scroll runner bucket 13-15 of the invention is 3；Isometrical scroll runner bucket 13-15's
Diameter D4For 320cm；The diameter D of isometrical scroll runner boss 13-16hFor 144cm；The import internal diameter D of pod 13-171For
The import outer diameter D of 432cm, pod 13-172For the outlet diameter D of 480cm, pod 13-173For 544cm；Stress tablet
The area a of 13-1 is 25cm2；The diameter of push-plate 15 is 400cm；The long 160cm of the short side of rotating bar 14, long side length 260cm；It is hydraulic
The length of controller piston rod 16 is 350cm；The length for incuding drive rod 13-2 is 60cm；The number of teeth of gear 13-3 is 40；
The length of flow increasing balancing spring 13-4 is 30cm；Flow is 3.6m3/s、β1For 61.5 °, β2When being 47 °, flow increasing formula intelligence water wheels
The output power of machine system is 616.4kW.
The design scheme of embodiment 3 is identical with the above-mentioned overall technological scheme of the present invention, the design of main component
Parameter is announced as follows:
The quantity of isometrical scroll runner bucket 13-15 of the invention is 5；Isometrical scroll runner bucket 13-15's
Diameter D4For 340cm；The diameter D of isometrical scroll runner boss 13-16hFor 153cm；The import internal diameter D of pod 13-171For
The import outer diameter D of 459cm, pod 13-172For the outlet diameter D of 510cm, pod 13-173For 578cm；Stress tablet
The area a of 13-1 is 30cm2；The diameter of push-plate 15 is 420cm；The long 160cm of the short side of rotating bar 14, long side length 250cm；It is hydraulic
The length of controller piston rod 16 is 350cm；The length for incuding drive rod 13-2 is 50cm；The number of teeth of gear 13-3 is 50；
The length of flow increasing balancing spring 13-4 is 35cm；Flow is 4m3/s、β1For 60 °, β2When being 45 °, flow increasing formula intelligence hydraulic turbine system
The output power of system is 618kW.
Implementation process of the invention are as follows: after the starting of flow increasing formula intelligence hydraulic turbine system, water flow first passes around through-flow type hydro-turbo
The water inlet flow channel 1 of generating set bypasses vertical shaft 2 and bulb 5, and speed is formed at the guide vane 4 of bulb-type hydraulic generating set
It is converged after circular rector and is combined into runner 9, water impact bulb-type hydraulic generating set runner bucket 8 is generated electricity by through-flow type hydro-turbo
The energy of water flow is converted to rotating mechanical energy, while 3 band of combination bearing by being placed in bulb 5 by unit runner bucket 8
Dynamic 6 rotor of generator rotation, converts mechanical energy into electric energy, subsequent water flow enters the draft tube of bulb-type hydraulic generating set
11, due to there is a large amount of remaining kinetic energy in tail water, water flow continues into isometrical scroll tail water stream flow-increasing device 13；By
Signal is passed to tail water stream mode controller 12, signal processor pair according to the size of inlet flow rate Q by stress tablet 13-1
Signal is handled and is fed back, and the signal of feedback controls induction drive rod 13-2, by induction drive rod 13-2 successively band
Moving gear 13-3, rack gear 13-5 and upper movable rod 13-7, lower movable rod 13-6, and then to upper flow control plate 13-10, upper flow control
The position of plate 13-13 is adjusted, and realizes the purpose for changing flow increasing effect in real time.When flow is larger, drive rod 13-2 is incuded
It moves right, induction drive rod 13-2 band moving gear 13-3 is rotated clockwise, and rack gear 13-5 is moved to left, and passes through upper movable rod 13-7
The opening between flow control plate is set to become larger with lower movable rod 13-6；When the flow if reduced, flow increasing balancing spring 13-4 makes rack gear 13-
5 move to left, and then reduce the opening between flow control plate, and flow increasing effect is consequently increased；Water flow is intake by pod later
Side 13-14 enters isometrical scroll runner unit, and channel angular scroll runner bucket 13-15 acting converts remaining kinetic energy
For the rotating mechanical energy of isometrical scroll runner, then passes torque to the external generator being attached thereto and generate electricity, from
And realize and mechanical energy is again converted to electric energy, last water flow is flowed out by pod water outlet side 13-18.In the flow increasing formula intelligence
In energy hydraulic turbine system operational process, tail water stream mode controller 12 calculates reality by power controller according to uninterrupted
When bulb-type hydraulic generating set and isometrical scroll runner unit Optimum Leaves angle, with real-time through-flow type hydro-turbo send out
The blade angle β of motor group runner bucket 81And the blade angle β of isometrical scroll runner bucket 13-152Compare, gained deviation
Δβ1With Δ β2Current signal is converted to after PI correction link passes to hydraulic controller 17；Hydraulic controller 17 by with reality
When current vs, control hydraulic controller piston rod 16 moved, and then drive push-plate 15 move, most by rotating bar 14
The blade angle of bulb-type hydraulic generating set and isometrical scroll runner unit is adjusted eventually, to guarantee entire flow increasing
Waterpower utilization rate highest of the formula intelligence hydraulic turbine system under different operating conditions, output power are maximum.
The explanation being not directed in a specific embodiment of the invention belongs to technology well known in the art, can refer to well-known technique
It is implemented.
The present invention achieves satisfied trial effect through validation trial.
The above specific embodiment and embodiment are to a kind of isometrical scroll tail water stream flow increasing dress of band proposed by the present invention
The specific support for the flow increasing formula intelligence hydraulic turbine system technical idea set, this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any equivalent variations or equivalent change done on the basis of the technical program,
Still fall within the range of technical solution of the present invention protection.
Claims (12)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177831A (en) * | 2020-10-28 | 2021-01-05 | 西安理工大学 | A bidirectional tubular water turbine with a zigzag structure in the runner chamber |
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