CN111828230B - Hydropower station power generation device with flow automatic allocation system - Google Patents
Hydropower station power generation device with flow automatic allocation system Download PDFInfo
- Publication number
- CN111828230B CN111828230B CN202010637393.2A CN202010637393A CN111828230B CN 111828230 B CN111828230 B CN 111828230B CN 202010637393 A CN202010637393 A CN 202010637393A CN 111828230 B CN111828230 B CN 111828230B
- Authority
- CN
- China
- Prior art keywords
- ring
- impeller
- flow
- axis
- guide body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000009434 installation Methods 0.000 claims abstract description 16
- 230000033001 locomotion Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F03B15/06—Regulating, i.e. acting automatically
-
- 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
- F03B3/14—Rotors having adjustable blades
-
- 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
- F03B3/183—Adjustable vanes, e.g. wicket gates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- 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
Landscapes
- 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 discloses a hydropower station power generation device with an automatic flow allocation system, which comprises an overflow pipe, a flow guide body, a guide vane ring, an impeller, a connecting column and a power generator, wherein two ends of the flow guide body are installed on the inner wall of the overflow pipe through the connecting column; the guide vane ring has variable water outlet direction; the impeller comprises a wheel shell and a blade assembly, wherein the axis of the wheel shell is the rotation axis of the impeller, the blade assembly is arranged on the outer cylindrical surface of the wheel shell, the installation shaft of the blade assembly is perpendicular to and intersected with the axis of the wheel shell, and the installation angle of the blade assembly is adjustable. The inflow angle of the water entering the impeller is adjusted through the folding blades, the placement angle of the blades is adjusted to enable inflow to be smooth, and water flow set along with the tail ends of the folding blades impacts the impeller at the set angle to do work and generate electricity.
Description
Technical Field
The invention relates to the field of hydropower station devices, in particular to a hydropower station power generation device with an automatic flow allocation system.
Background
The water flow of the hydropower station is guided to the water turbine to carry out hydroelectric power generation after entering the water collecting pipe, the rotating speed of the water turbine is an important parameter, the rotating speed of a main shaft of the water turbine is directly related to the rotating speed of a generator, and the rotating speed of the generator is related to the power generation frequency, so that the rotating speed of the generator is important to maintain the power generation stability.
The rotating speed of the generator is mainly related to load and input torque, the rotating speed is increased when the torque is surplus, the rotating speed is reduced when the torque is deficient, the output torque of the water turbine is related to the peripheral speed of water flow and blades, the peripheral speed is possibly kept unchanged, and the rotating speed stability can be ensured.
The axial flow type hydraulic turbine entrance often sets up the stator structure, and when the hydraulic turbine plus this holistic upstream and downstream water pressure of stator took place undulantly, the discharge in the passageway can change, and the rivers of flow variation experience behind the stator, the change of circumferential speed can appear, is unfavorable for the electricity generation stably, how set up the automatic identification flow variation in crossing the water passageway and adjust the technical problem that the hydraulic turbine output is that a small-size axial flow type power station wants to solve.
Disclosure of Invention
The invention aims to provide a hydropower station power generation device with an automatic flow allocation system, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydropower station power generation device with an automatic flow allocation system comprises a flow passage pipe, a flow guide body, a guide vane ring, an impeller, a connecting column and a generator, wherein two ends of the flow guide body are mounted on the inner wall of the flow passage pipe through the connecting column; the guide vane ring has variable water outlet direction; the overflow pipe leads water flow from a high place, impacts the impeller to enable the impeller to rotate to do work, the rotation of the impeller drives a generator shaft to rotate, and power generation is performed through doing work.
Further, the impeller comprises a wheel shell and a blade assembly, wherein the axis of the wheel shell is the rotation axis of the impeller, the blade assembly is installed on the outer cylindrical surface of the wheel shell, the installation shaft of the blade assembly is perpendicular to and intersected with the axis of the wheel shell, and the installation angle of the blade assembly is adjustable. Since the water inlet direction is changed, in order to prevent the blade assembly from colliding with the water flow and to more smoothly flow between the blades of the impeller, the water flow does work in the flowing process, in the previous step, the water outlet direction of the guide vane ring is changed for coordinating the circumferential flow, when the blade assembly changes the blade installation angle, the rotation speed of the blade assembly along with the wheel shell is unchanged, the circumferential speed difference between the impeller and the water flow is kept unchanged, and the work power is stable.
Further, the guide vane ring comprises a ring seat, a first-stage vane and a plurality of folding vanes, wherein the axis of the ring seat is superposed with the axis of the flow guide body, the inner ring of the ring seat is fixed with the flow guide body, the outer ring of the ring seat is connected with the inner ring through a radial connecting rod, the first-stage vane and the plurality of folding vanes are arranged between the inner ring and the outer ring of the ring seat, the first-stage vane is positioned at the water inlet side of the ring seat, the plane where the first-stage vane is positioned is intersected with the axis of the ring seat, the folding vanes are sequentially folded and extend towards the water outlet side of the ring seat, when the included angle between the plane where each vane of the last-stage folding vane is positioned and the axis of the ring seat is gradually increased from the first-stage vane to the water outlet side of the ring seat, the folding vanes only need to be drawn out to the required position, the tail end of the folding vane with the larger expansion degree has a larger included angle with the axis of the ring seat, and the tail end of the folding vane with the larger folding degree has a smaller included angle with the axis of the ring seat, the outflow direction is along with the folding blade setting angle of the last stage, different water outflow angles are constructed through folding and unfolding of the blades, the simple way of changing the water flow is provided, and the water flow passing performance is still good.
The guide vane ring further comprises a push ring, a traction column is arranged at the sliding root of the last-stage folding blade, at least one of the inner ring and the outer ring of the ring seat is provided with guide grooves with the same number as the first-stage blades, the guide grooves are waist-shaped grooves with circular arc center lines, the traction column is embedded into the guide grooves and slides along the guide grooves, the guide body is internally provided with push rings with the same number as the first-stage blades, the push rings are straight waist-shaped, the length direction of the push rings is parallel to the axis of the guide body, inner holes of the push rings are embedded with the traction column, all the push rings are connected through annular round pipes with the axis of the guide body as the axis, and the push rings can be driven to rotate around the axis of the guide body. Folding and unfolding of the folding blades are carried out through the push ring, when the push ring rotates around the axis of the guide body, the push ring carries out translational motion on an unfolding plane, the pull column at the tail end of the folding blade is pushed to slide along the guide groove, so that angle change of the last stage folding blade is realized, and the rotation of the push ring is driven to be carried out, wherein the driving is rotary driving.
Further, the impeller still includes the accent to the subassembly, and the blade subassembly includes blade and accent to the gear, and blade root installation axle inserts the wheel casing wall perpendicularly, and the one end that the blade is located the wheel casing is equipped with the accent to the gear, and the accent is to the subassembly including accent to axle and ring gear, and the accent is to the axle by stretching into in the wheel casing in the baffle, and the one end that the accent is located the wheel casing is equipped with the ring gear, and the accent is to axle and the coincidence of wheel casing axis, ring gear and accent to gear engagement. The installation angle of each blade is adjusted through the direction adjusting shaft, the adjusting shaft rotates to drive the ring gear to rotate, the ring gear is meshed with the direction adjusting gear to rotate, and the gears are meshed in an intersecting mode, so that the gears are conical gears, the adjusting shaft rotates by an angle, all the blades rotate by an angle around the installation shaft at the root of each blade, and the purpose of adjusting the installation angle is achieved.
The part of the guide body, which is positioned in front of the guide vane ring, is provided with a first pressure measuring point, the part of the guide body, which is positioned behind the impeller, is provided with a second pressure measuring point, the first pressure measuring point and the second pressure measuring point respectively guide a strand of surrounding water to a section of U-shaped pipe, the U-shaped pipe is arranged in the guide body, the bent part of the U-shaped pipe is filled with liquid which is less than water in density and is immiscible with the water, a floater is arranged at a liquid interface at one side of the U-shaped pipe, the linear movement of the floater is amplified by a gear rack to form a rotating action, and the rotating action drives the push ring and the direction adjusting shaft to rotate; the pressure difference between the front and back of the detected water flow of the first pressure measuring point and the second pressure measuring point flowing through the guide vane ring and the impeller is on the same flow path, so the pressure difference is directly related to the axial flow, a larger pressure difference can cause more flow, when more flow is needed, the angle between the guide vane and the impeller needs to be adjusted, the pressure difference between the two pressure measuring points is the time when the adjusting time of the push ring and the steering shaft is determined, and the larger the pressure difference is, the larger the axial flow needed to be compensated is, the pressure difference reflects the height difference of the liquid level at two sides of the U-shaped pipe introduced after the drainage of the pressure measuring points, the height change of the floater on the interface reflects the size change of the pressure difference, the rotating angle between the push ring and the steering shaft is determined according to the linear moving distance of the floater, the linear change of the floater can be converted into rotating motion in various ways, and the gear rack is one of the pressure difference, the rack is connected with the linear motion, and the gear is connected with the rotary motion.
Furthermore, the direction adjusting gear and the ring gear are bevel gears, and the bevel gears are stable in transmission.
Further, the number of blade assemblies is coprime to the number of first stage blades. The quantity of the blades with the coprime quantity can enable water flow to flow into the impeller from the guide vane ring, no periodical fluctuation superposition exists in the circumferential direction, when a periodical circular quantity fluctuation occurs due to disturbance on a circumferential angle in the guide vane ring, the quantity of the blades on the impeller and the guide vane ring do not have a common divisor, the circular quantity fluctuation can be distributed between every two blade assemblies by taking the common divisor as a step, so that the circular quantity fluctuation is fully eliminated, if more common divisors exist, the circular quantity fluctuation only occurs on the angular distribution of the common divisor, the maximum value appears at the angular position of the maximum common divisor even causes fluctuation resonance, the normal work of the impeller is influenced, and the quantity of the blades with the coprime quantity is preferably odd-numbered.
Compared with the prior art, the invention has the beneficial effects that: the invention adjusts the inflow angle entering the impeller through the folding blade, adjusts the blade placement angle to ensure smooth inflow, and the water flow set along with the tail end of the folding blade impacts the impeller at a set angle to do work and generate electricity; when the flow rate of water flow is increased, the differential pressure of the front pressure measuring point and the rear pressure measuring point reflects the flow rate change degree, the outflow angle of the last-stage folding blade and the inflow angle of the blades are adjusted according to the differential pressure, the difference value of the circumferential speeds of the water flow and the impeller is kept unchanged, the acting power is kept consistent, and the output of the generator is stable.
Drawings
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a first partial expanded view of the vane ring of the present invention on the outer cylindrical surface;
FIG. 3 is a schematic view of the folded blade of the present invention at an unfolded angle;
FIG. 4 is a schematic view of the internal structure of the impeller of the present invention;
FIG. 5 is a schematic view of the variation of the blade angle on the exterior of the impeller according to the present invention;
FIG. 6 is a graph of velocity analysis of water flowing through the vane ring and the vanes in a circumferentially developed plane in accordance with the present invention;
FIG. 7 is a graph of velocity analysis of water flowing over the surface of a blade according to the present invention;
FIG. 8 is a graph of velocity analysis of water flow after changing axial velocity in accordance with the present invention.
In the figure: the device comprises a flow pipe 1, a flow guide body 2, a guide vane ring 3, a ring seat 31, a first-stage blade 32, a folding blade 33, a traction column 331, a guide groove 34, a push ring 35, an impeller 4, a wheel shell 41, a blade assembly 42, a blade 421, a direction adjusting gear 422, a direction adjusting assembly 43, an adjusting shaft 431, a ring gear 432, a mounting rack 44, a connecting column 5, a generator 6, a first pressure measuring point 91 and a second pressure measuring point 92.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a hydropower station power generation device with an automatic flow rate allocation system comprises an overflow pipe 1, a flow guide body 2, a guide vane ring 3, an impeller 4, a connecting column 5 and a generator 6, wherein two ends of the flow guide body 2 are mounted on the inner wall of the overflow pipe 1 through the connecting column 5, the guide vane ring 3 and the impeller 4 are mounted on the flow guide body 2, the impeller 4 is rotatably connected with the flow guide body 2, the axes of the flow guide body 2, the guide vane ring 3 and the impeller 4 are all coincided with the axis of the overflow pipe 1, and the impeller 4 is connected with the generator 6 through a shaft; the guide vane ring 3 has a variable water outlet direction; the overflow pipe 1 draws water flow from a high place to impact the impeller to rotate and do work, the rotation of the impeller drives the shaft of the generator 6 to rotate to do work and generate electricity, the water flow is a common form of a water turbine, in the application, the water outlet direction of the guide vane ring 3 can be changed in a controlled mode, so that when the water flow at the upstream of the overflow pipe 1 changes, the flow used for doing work in the circumferential direction of the impeller keeps unchanged by changing the angle of the water outlet direction, the circumferential work flow is the difference value obtained by subtracting the circumferential speed of the impeller from the absolute circumferential speed of the water flow, the difference value is multiplied by the area of blades of the impeller to be circumferential flow, the relative stability of the circumferential flow is kept, the work power of the generator is enabled to be stable, the work power of the generator is enabled not to fluctuate, and when electromagnetic induction exists, no surplus or lack of power, and the output fluctuation of electric power is caused.
As shown in fig. 4 and 5, the impeller 4 includes a wheel shell 41 and a blade assembly 42, the axis of the wheel shell 41 is the rotation axis of the impeller 4, the blade assembly 42 is mounted on the outer cylindrical surface of the wheel shell 41, the mounting shaft of the blade assembly 42 is perpendicular to and intersects with the axis of the wheel shell 41, and the mounting angle of the blade assembly 42 is adjustable. Since the water inflow direction is changed, the water flow works in the flowing process so that the vane unit 42 does not collide with the water flow and flows more smoothly between the vanes of the impeller 4, and when the vane unit 42 changes the vane attachment angle to match the circumferential flow rate, the vane unit itself does not change with the rotation speed of the hub 41, and thus the difference in the circumferential speed between the impeller 4 and the water flow is maintained, and the working power is stabilized.
As shown in fig. 1 to 3, the guide vane ring 3 includes a ring seat 31, a first stage vane 32, and a folding vane 33, the axis of the ring seat 31 coincides with the axis of the flow guiding body 2, the ring seat 31 has an inner ring and an outer ring, the inner ring of the ring seat 31 is fixed with the flow guiding body 2, the outer ring of the ring seat 31 is connected to the inner ring through a radial link, the first stage vane 32 and a plurality of folding vanes 33 are disposed between the inner ring and the outer ring of the ring seat 31, the first stage vane 32 is located on the water inlet side of the ring seat 31, the plane of the first stage vane 32 is intersected with the axis of the ring seat 31, the folding vanes 33 are folded in sequence and extend toward the water outlet side of the ring seat 31, when the included angle between the plane of each vane of the first stage vane 32 and the last stage folding vane 33 and the axis of the ring seat 31 is gradually increased to change the water outlet direction, the folding vanes 33 only need to be drawn out to the required position, as shown in fig. 2 and 3, the tip of the folding vane 33 with a larger included angle with the axis of the ring seat 31, the outflow angle is marked as a1, the end of the folding blade 33 which is folded more has a smaller included angle with the axis of the ring seat 31, the outflow angle is marked as a 1', the outflow water meets the continuity condition, namely Vc0 is marked as Va1, the outflow direction is along with the setting angle of the folding blade 33 at the last stage, and the different outflow angles of the water are constructed through the folding and unfolding of the blades, so that the simple way of changing the water flow is provided, but the good flow passing performance is still provided for the flow.
As shown in fig. 6 to 8, the water flow is deflected by the last stage blade 33 to a velocity Vc1, which has an axial velocity Va1 and a circumferential velocity Vu1, when entering the impeller 4, the designed rotation speed of the impeller 4 is Vup, the difference Δ Vu between Vup and Vu1 is the relative velocity of the water flow and the blade in the circumferential direction, Vup is greater than Vu1, the relative velocity direction is opposite to Vup, the axial relative velocity is still Va1, so that the superposition of the relative velocities is VX, the VX angle should be consistent with the angle of the blade 421, otherwise the inflow of the impeller 421 collides, and the angle a3 between VX and 1 is the angle a2 between the surface of the blade 421 and the axis of the impeller 4.
When the water flow in the flow pipe 1 increases, as shown in fig. 8, the axial speed Va1 is changed to Va1 ', in order to keep the peripheral speed constant, the angles a1 to a 1' need to be changed to be the same Δ Vu, the relative speed VX is changed to VX ', the blade 421 placement angle a3 is changed to be a 3', and the required degree of angle change is obtained from the speed analysis.
As shown in fig. 2 to 3, the guide vane ring 3 further includes a push ring 35, the sliding root of the last stage folded blade 33 is provided with a pulling column 331, at least one of the inner and outer rings of the ring seat 31 is provided with guide grooves 34 having the same number as the first stage blade 32, the guide grooves 34 are oval grooves having a central line, the pulling column 331 is embedded in the guide grooves 34 and slides along the guide grooves 34, the guide body 2 is provided with push rings 35 having the same number as the first stage blade 32, the push rings 35 are straight oval grooves, the length direction of the push rings 35 is parallel to the axis of the guide body 2, the inner holes of the push rings 35 are embedded with the pulling column 331, all the push rings 35 are connected by an annular circular pipe having the axis of the guide body 2 as the axis, and the push rings 35 can be driven to rotate around the axis of the guide body 2. The folding and unfolding of the folding blades 33 are performed by means of a push ring 35, as shown in fig. 2 and 3, when the push ring 35 rotates around the axis of the flow conductor 2, the push ring 35 performs a translational motion on the unfolding plane, and a pull column 331 pushing the end of the folding blade 33 slides along the guide slot 34, thereby performing an angular change of the last folding blade 33, and the rotation of the push ring 35 is driven, which is a rotational drive.
As shown in fig. 4, the impeller 4 further includes a direction adjustment assembly 43, the blade assembly 42 includes a blade 421 and a direction adjustment gear 422, a root installation shaft of the blade 421 is vertically inserted into a wall surface of the wheel housing 41, the direction adjustment gear 422 is disposed at one end of the blade 421 located in the wheel housing 41, the direction adjustment assembly 43 includes a direction adjustment shaft 431 and a ring gear 432, the direction adjustment shaft 431 extends into the wheel housing 41 from the flow conductor 2, the ring gear 432 is disposed at one end of the direction adjustment shaft 431 located in the wheel housing 41, the direction adjustment shaft 431 is coincident with an axis of the wheel housing 41, and the ring gear 432 is meshed with the direction adjustment gear 422. The installation angle of the blades 421 is adjusted by the direction-adjusting shaft 431, the direction-adjusting shaft 431 rotates to drive the ring gear 432 to rotate, the ring gear 432 is meshed with the direction-adjusting gear 422 to rotate, and the gears are meshed with each other in a crossed manner because the gears with vertical axes are meshed with each other, so that the gears are bevel gears, the angle of rotation of the direction-adjusting shaft 431 is one angle, and all the blades 421 rotate one angle around the installation shaft at the root of the blades 421, so that the purpose of adjusting the installation angle is achieved.
As shown in fig. 1, a first pressure measuring point 91 is formed on a part of the guide body 2 located in front of the guide vane ring 3, a second pressure measuring point 92 is formed on a part of the guide body 2 located behind the impeller 4, the first pressure measuring point 91 and the second pressure measuring point 92 respectively guide a strand of surrounding water to a section of U-shaped pipe, the U-shaped pipe is arranged in the guide body 2, a bent part of the U-shaped pipe is filled with liquid which is less in density than water and is immiscible with water, a floater is arranged at a liquid interface on one side of the U-shaped pipe, the linear movement of the floater becomes a rotation action through the amplification of torque of a gear and a rack, and the rotation action drives the push ring 35 and the direction adjusting shaft 431 to rotate; as shown in fig. 1, the pressure difference before and after the detected water flows of the first pressure measuring point 91 and the second pressure measuring point 92 pass through the guide vane ring 3 and the impeller 4 is on the same flow path, so the pressure difference is directly related to the axial flow, a larger pressure difference causes more flow, and when more flow is needed, the angle between the guide vane and the impeller needs to be adjusted, so the pressure difference between the two pressure measuring points is when the adjustment timing of the push ring 35 and the direction adjusting shaft 431 is determined, and the larger the pressure difference is, the larger the axial flow needs to be compensated is, the pressure difference reflects the liquid level difference between the two sides of the U-shaped pipe after the flow is guided by the pressure measuring points, the float height change on the interface reflects the pressure difference change, the rotation angle between the push ring 35 and the direction adjusting shaft 431 is determined by the linear movement distance of the float, and the linear change of the float can be converted into rotation movement in many ways, the rack and pinion is one of the two, the rack moves linearly, and the pinion moves rotationally.
The direction-adjusting gear 422 and the ring gear 432 are helical gears, and the helical gears are stable in transmission.
The number of blade assemblies 42 is relatively prime to the number of first stage blades 32. The quantity of the blades with the mutual qualities can enable water flow to flow from the inside of the guide vane ring 3 to the inside of the impeller 4, no periodical fluctuation superposition exists in the circumferential direction, when a circumferential angle exists in the guide vane ring 3 and the periodical circular quantity fluctuation occurs, the circular quantity fluctuation is distributed between each blade assembly 42 by taking the first common divisor as a step number because the quantity of the blades on the impeller 4 and the guide vane ring 3 do not have the common divisor, so that the circular quantity fluctuation fully eliminates the circular quantity fluctuation, if more common divisors exist, the circular quantity fluctuation only occurs in the angular distribution of the common divisors, a maximum value appears at the angular position of the maximum common divisor even causes fluctuation resonance, the normal work of the impeller 4 is influenced, and the quantity of the blades with the mutual qualities is preferably odd quantity.
The main use process of the device is as follows: the water flow flows through the flow pipe 1, enters the guide vane ring 3 and then changes in angle, and impacts the impeller 4 at a set angle along with the water flow set at the tail end of the folding blade 33 to do work and generate power; when the water flow rate is increased, the differential pressure of the front and rear pressure measuring points reflects the change degree of the flow rate, so that the outflow angle of the last-stage folding blade 33 and the inflow angle of the blade 421 are adjusted according to the change degree, the difference value of the circumferential speeds of the water flow and the impeller 4 is kept unchanged, the acting power is kept consistent, and the output of the generator is stable.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a power generation facility of power station with automatic allotment system of flow which characterized in that: the hydropower station power generation device comprises an overflow pipe (1), a flow guide body (2), a guide vane ring (3), an impeller (4), a connecting column (5) and a power generator (6), wherein two ends of the flow guide body (2) are mounted on the inner wall of the overflow pipe (1) through the connecting column (5), the guide vane ring (3) and the impeller (4) are mounted on the flow guide body (2), the impeller (4) is rotatably connected with the flow guide body (2), the axes of the flow guide body (2), the guide vane ring (3) and the impeller (4) are coincided with the axis of the overflow pipe (1), and the impeller (4) is connected with the power generator (6) through a shaft; the guide vane ring (3) has a variable water outlet direction;
the impeller (4) comprises an impeller shell (41) and a blade assembly (42), the axis of the impeller shell (41) is the rotation axis of the impeller (4), the blade assembly (42) is installed on the outer cylindrical surface of the impeller shell (41), the installation shaft of the blade assembly (42) is perpendicular to and intersected with the axis of the impeller shell (41), and the installation angle of the blade assembly (42) is adjustable;
the guide vane ring (3) comprises a ring seat (31), first-stage vanes (32) and folding vanes (33), the axis of the ring seat (31) is coincident with the axis of the flow guide body (2), the ring seat (31) is divided into an inner ring and an outer ring, the inner ring of the ring seat (31) is fixed with the flow guide body (2), the outer ring of the ring seat (31) is connected with the inner ring through a radial connecting rod, the first-stage vanes (32) and a plurality of folding vanes (33) are arranged between the inner ring and the outer ring of the ring seat (31), the first-stage vanes (32) are positioned on the water inlet side of the ring seat (31), the plane where the first-stage vanes (32) are positioned is intersected with the axis of the ring seat (31), the folding vanes (33) are sequentially folded and extend towards the water outlet side of the ring seat (31), and the included angle between the plane where each vane positioned from the beginning of the first-stage vanes (32) to the last-stage folding vanes (33) and the axis of the ring seat (31) is gradually increased;
the guide vane ring (3) also comprises a push ring (35), the sliding root part of the folding vane (33) at the last stage is provided with a traction column (331), at least one of the inner ring and the outer ring of the ring seat (31) is provided with guide grooves (34) with the same number as the first-stage blades (32), the guide groove (34) is a kidney-shaped groove with a circular arc center line, the traction column (331) is embedded in the guide groove (34) and slides along the guide groove (34), push rings (35) with the same number as the first-stage blades (32) are arranged in the guide body (2), the push ring (35) is a straight waist-round shape, the length direction of the push ring (35) is parallel to the axis of the flow guide body (2), the inner hole of the push ring (35) is embedded with the traction column (331), all the push rings (35) are connected through an annular round tube taking the axis of the flow guide body (2) as the axis, and the push ring (35) can be driven to rotate around the axis of the flow guide body (2).
2. The hydropower station power generation device with the flow automatic allocation system according to claim 1, wherein: impeller (4) still include and transfer to subassembly (43), blade subassembly (42) are including blade (421) and transfer to gear (422), blade (421) root installation axle is perpendicular to be inserted wheel casing (41) wall, and one end that blade (421) are located wheel casing (41) is equipped with and transfers to gear (422), transfer to subassembly (43) including transfer to axle (431) and ring gear (432), transfer to axle (431) by flow conductor (2) in stretching into wheel casing (41), transfer to axle (431) one end that is located wheel casing (41) and be equipped with ring gear (432), transfer to axle (431) and wheel casing (41) axis coincidence, ring gear (432) and transfer to gear (422) meshing.
3. The hydropower station power generation device with the flow automatic allocation system according to claim 2, wherein: the guide body (2) is provided with a first pressure measuring point (91) in the part located in front of the guide vane ring (3), a second pressure measuring point (92) is arranged in the part located behind the impeller (4) on the guide body (2), the first pressure measuring point (91) and the second pressure measuring point (92) respectively guide a strand of surrounding water to a section of U-shaped pipe, the U-shaped pipe is arranged in the guide body (2), the bent part of the U-shaped pipe is filled with liquid which is less than water in density and is not mutually soluble with water, a floater is arranged at the liquid interface on one side of the U-shaped pipe, the linear movement of the floater becomes a rotating action through a gear and rack amplifying moment, and the rotating action drives the push ring (35) and the direction adjusting shaft (431) to rotate.
4. The hydropower station power generation device with the flow automatic allocation system according to claim 2, wherein: the direction adjusting gear (422) and the ring gear (432) are helical gears.
5. The hydropower station power generation device with the flow automatic allocation system according to claim 2, wherein: the number of blade assemblies (42) is coprime to the number of first stage blades (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010637393.2A CN111828230B (en) | 2020-07-03 | 2020-07-03 | Hydropower station power generation device with flow automatic allocation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010637393.2A CN111828230B (en) | 2020-07-03 | 2020-07-03 | Hydropower station power generation device with flow automatic allocation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111828230A CN111828230A (en) | 2020-10-27 |
| CN111828230B true CN111828230B (en) | 2021-08-10 |
Family
ID=72900186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010637393.2A Active CN111828230B (en) | 2020-07-03 | 2020-07-03 | Hydropower station power generation device with flow automatic allocation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111828230B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915042A (en) * | 2021-09-14 | 2022-01-11 | 杭州康鹏机械制造有限公司 | Guide vane body structure of water turbine and mounting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB723798A (en) * | 1951-02-26 | 1955-02-09 | Voith Gmbh J M | Improvements in axial-flow turbines or pumps |
| EP0636787A1 (en) * | 1993-07-28 | 1995-02-01 | KSB Aktiengesellschaft | Unidirectional pumpturbine |
| CN102251902A (en) * | 2011-06-20 | 2011-11-23 | 中国海洋大学 | Variable-propeller-pitch water turbine and tide generating device |
| EP2388436A2 (en) * | 2010-05-21 | 2011-11-23 | MTU Aero Engines AG | Vane actuation system for a turbomachine |
| CN103742337A (en) * | 2013-12-27 | 2014-04-23 | 河海大学 | Bilateral guide vane through-flow turbine with elliptical runners |
| WO2016182372A1 (en) * | 2015-05-13 | 2016-11-17 | 김철수 | Apparatus for adjusting angle of blade |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8125096B2 (en) * | 2007-07-05 | 2012-02-28 | Salvatore Shifrin | Hydro turbine generator |
-
2020
- 2020-07-03 CN CN202010637393.2A patent/CN111828230B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB723798A (en) * | 1951-02-26 | 1955-02-09 | Voith Gmbh J M | Improvements in axial-flow turbines or pumps |
| EP0636787A1 (en) * | 1993-07-28 | 1995-02-01 | KSB Aktiengesellschaft | Unidirectional pumpturbine |
| EP2388436A2 (en) * | 2010-05-21 | 2011-11-23 | MTU Aero Engines AG | Vane actuation system for a turbomachine |
| CN102251902A (en) * | 2011-06-20 | 2011-11-23 | 中国海洋大学 | Variable-propeller-pitch water turbine and tide generating device |
| CN103742337A (en) * | 2013-12-27 | 2014-04-23 | 河海大学 | Bilateral guide vane through-flow turbine with elliptical runners |
| WO2016182372A1 (en) * | 2015-05-13 | 2016-11-17 | 김철수 | Apparatus for adjusting angle of blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111828230A (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111828230B (en) | Hydropower station power generation device with flow automatic allocation system | |
| JP2014512489A (en) | Hydro turbine and hydro power generator | |
| JP2015520329A (en) | Device for converting energy from fluid flow | |
| WO2001009515A1 (en) | Ribbon drive pumping apparatus and method | |
| EP3735529B1 (en) | Hydraulic turbine | |
| Li et al. | Cavitation effects on pressure fluctuation in pump-turbine hump region | |
| CN107237718A (en) | A kind of multi-stage impeller tumbler for absorbing tide energy | |
| CN111888552B (en) | Single-axis variable-speed two-stage asynchronous heart pump with difference iteration curve flow channel and use method | |
| US6592335B2 (en) | Ribbon drive pumping apparatus and method | |
| Arndt et al. | Hydraulic turbines | |
| EP2715120A1 (en) | Turbine blades with mixed blade loading | |
| Kumar et al. | Axial water jet injection in a low head Francis turbine at part load | |
| KR100990988B1 (en) | Cyclone Waterpower Generator | |
| AU2013326306B2 (en) | Turbine with radial inlet and outlet and multi-element guide vanes for oscillating flows | |
| CN217784544U (en) | Bend of pressure water delivery pipeline | |
| EP0877861A1 (en) | Hydroelectric power generation plant | |
| CN115585140A (en) | Shaftless high-cavitation-resistance low-amplitude vibration reversible axial flow fluid machine | |
| CN109185190A (en) | A kind of shaft work matching process of counter-rotating fan and counter-rotating fan | |
| Zhu et al. | Optimal hydraulic design of new-type shaft tubular pumping system | |
| CN108631424A (en) | Gas meter, flow meter and combustion gas counting component | |
| CN108252843A (en) | A kind of analysis method being had an impact based on changes in flow rate to turbine draft tube vortex rope | |
| Shukla et al. | Design of Propeller Turbine for Micro Hydro Power Station Using CFD | |
| KR102039700B1 (en) | Hihg-power generating vortex windmill wing | |
| CN203067165U (en) | Improved low-water-level current collecting power generation system for rivers | |
| CN109798215A (en) | A kind of novel super-low specific speed pump turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 325000 Wenzhou City National University Science Park incubator, No. 38 Dongfang South Road, Ouhai District, Wenzhou, Zhejiang Applicant after: WENZHOU VOCATIONAL & TECHNICAL College Address before: 325000 Cha Shan High Education Park in Wenzhou, Zhejiang and 81 Chiang Jia Qiao, Wenzhou. Applicant before: WENZHOU VOCATIONAL & TECHNICAL College |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211019 Address after: 325105 Zhejiang Wenzhou Yongjia Industrial Park (oubeibao II) Yalong Intelligent Equipment Group Co., Ltd Patentee after: YALONG INTELLIGENT EQUIPMENT GROUP Co.,Ltd. Address before: 325000 Wenzhou City National University Science Park incubator, No. 38 Dongfang South Road, Ouhai District, Wenzhou, Zhejiang Patentee before: WENZHOU VOCATIONAL & TECHNICAL College |
|
| TR01 | Transfer of patent right |