CN114567120B - Outer rotor permanent magnet hydraulic generator and hydraulic generator set - Google Patents
Outer rotor permanent magnet hydraulic generator and hydraulic generator set Download PDFInfo
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- CN114567120B CN114567120B CN202210157831.4A CN202210157831A CN114567120B CN 114567120 B CN114567120 B CN 114567120B CN 202210157831 A CN202210157831 A CN 202210157831A CN 114567120 B CN114567120 B CN 114567120B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000007789 sealing Methods 0.000 claims abstract description 64
- 238000010248 power generation Methods 0.000 claims abstract description 54
- 238000004804 winding Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 108091006146 Channels Proteins 0.000 description 19
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 241000883990 Flabellum Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
-
- 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
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1846—Rotary generators structurally associated with wheels or associated parts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
-
- 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)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses an outer rotor permanent magnet hydraulic generator and a hydraulic generator set, comprising: the shaft seat is provided with a main shaft which is used for being arranged in water flow; the rotating wheel is rotationally arranged on the main shaft and provided with a first rotation axis, and a power generation cavity is arranged in the rotating wheel; the fan blades are arranged on the outer side wall of the rotating wheel and are driven by water flow to drive the rotating wheel to rotate around the main shaft; the stator is arranged on the outer side wall of the main shaft, is positioned in the power generation cavity and can be electrically connected with a power grid; the rotor is arranged on the inner side wall of the power generation cavity; and the first sealing device is used for sealing the power generation cavity. The structure of the generator and the water turbine can be simplified, and the cost is lower. The invention is applied to the field of hydroelectric power generation equipment.
Description
Technical Field
The invention relates to the field of hydroelectric power generation equipment, in particular to an outer rotor permanent magnet hydraulic generator and a hydraulic generator set.
Background
The structure of the current hydroelectric generating set has been extended for more than hundred years, the water turbine and the generator are separately arranged, the synchronous rotation is formed by connecting a main shaft flange, the vertical structure adopts a two-layer factory building structure, the civil construction cost is high, the investment cost of electromechanical equipment is high, and the set size is huge.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the outer rotor permanent magnet hydraulic generator which can simplify the structures of the generator and the hydraulic turbine and has lower cost.
A water turbine generator set is also provided, and the water turbine generator set is provided with the outer rotor permanent magnet water turbine generator.
The technical scheme adopted by the embodiment of the first aspect of the invention is as follows: an outer rotor permanent magnet hydro-generator comprising: a shaft seat provided with a main shaft; the rotating wheel is rotatably arranged on the main shaft, and a power generation cavity is arranged in the rotating wheel; the fan blades are arranged on the outer side wall of the rotating wheel and are driven by water flow to drive the rotating wheel to rotate around the main shaft; the stator is arranged on the outer side wall of the main shaft, is positioned in the power generation cavity and can be electrically connected with a power grid; the rotor is arranged on the inner side wall of the power generation cavity, and the rotor and the stator are oppositely arranged at intervals; and the first sealing device is used for sealing a gap between the main shaft and the rotating wheel so as to seal the power generation cavity.
The outer rotor permanent magnet hydraulic generator according to the embodiment of the first aspect of the invention has at least the following beneficial effects:
1. the generator is directly hidden in the power generation cavity of the rotating wheel, and when the fan blades are driven by water flow, the rotor rotates relative to the stator when the rotating wheel is driven to rotate, so that power generation is realized, a factory building for independently placing the generator is not required to be built, and the manufacturing cost is reduced;
2. the power generation cavity and the water flow are isolated through the first sealing device, so that the power generator can smoothly generate power, and the waterproof effect of the power generator when the power generator is independently arranged is achieved.
According to some embodiments of the invention, the rotating wheel has a first rotation axis, the rotating wheel comprises an upper end cover, a lower end cover and a hollow rotating wheel cylinder, the rotating wheel cylinder is arranged along the first rotation axis, the upper end cover is covered at one end of the rotating wheel cylinder, the lower end cover is covered at the other end of the rotating wheel cylinder, the upper end cover, the lower end cover and the rotating wheel cylinder are surrounded to form the power generation cavity, and the upper end cover and the lower end cover are rotationally connected with the main shaft.
According to some embodiments of the invention, the first sealing device comprises an upper sealing cover and a lower sealing cover, wherein the upper end cover is rotationally connected with the main shaft through an upper bearing, and the lower end cover is rotationally connected with the main shaft through a lower bearing;
the upper sealing cover is covered at the joint of the upper bearing and the upper end cover and is positioned on one surface of the upper end cover, which is far away from the power generation cavity, an upper main shaft sealing sleeve is arranged on one surface of the upper sealing cover, which is far away from the upper end cover, and the upper main shaft sealing sleeve extends out of the upper sealing cover and is used for sleeving and dynamically sealing the main shaft;
the lower sealing cover is arranged at the joint of the lower bearing and the lower end cover and is positioned on one surface of the lower end cover, which is far away from the power generation cavity, a lower main shaft sealing sleeve is arranged on one surface of the lower sealing cover, which is far away from the lower end cover, and the lower main shaft sealing sleeve extends out of the lower sealing cover and is used for sleeving and dynamically sealing the main shaft.
According to some embodiments of the invention, the power generation device further comprises a water discharge cone, wherein the water discharge cone is arranged on one surface of the lower end cover, which is far away from the power generation cavity.
According to some embodiments of the invention, the stator is provided with a stator winding, and the winding material of the stator winding is water-resistant winding wire of a crosslinked polyethylene insulating nylon sheath.
According to some embodiments of the invention, a cooling duct is provided within the main shaft, the cooling duct passing through the power generation chamber to cool the stator within the power generation chamber.
According to some embodiments of the invention, the electric power system further comprises a stator outgoing cable, wherein one end of the stator outgoing cable is electrically connected with the stator, and the other end of the stator outgoing cable penetrates through the main shaft to be electrically connected with the power grid.
The technical scheme adopted by the embodiment of the second aspect of the invention is as follows: a permanent magnet hydro-generator unit comprising: an embodiment of the first aspect of the invention is an outer rotor permanent magnet hydraulic generator.
The permanent magnet water turbine generator set according to the embodiment of the second aspect of the invention has at least the following beneficial effects: by arranging the outer rotor permanent magnet hydraulic generator, a factory building of the generator is not required to be arranged independently during installation, and the construction cost is saved.
According to some embodiments of the invention, the water pump further comprises an upper fixing seat, a lower fixing seat and a volute, wherein the volute is arranged between the upper fixing seat and the lower fixing seat, a first transverse water flow channel is formed by surrounding the volute, the upper fixing seat and the lower fixing seat, a second longitudinal water flow channel is arranged on the lower fixing seat, the second water flow channel is positioned at the center of the volute and is communicated with the first water flow channel, water can enter the second water flow channel from the first water flow channel, a runner chamber is arranged at the joint of the second water flow channel and the first water flow channel, the runner is arranged in the runner chamber, a supporting cover is arranged at the opposite position of the upper fixing seat and the second water flow channel, the shaft seat is arranged on the supporting cover, and the main shaft extends from the shaft seat to the second water flow channel.
According to some embodiments of the invention, a draft tube is further provided on the second water flow passage, and the draft tube is communicated with the runner chamber and is located at the rear of the runner chamber along the water flow direction, and the diameter of the draft tube is larger than the diameter of the runner chamber.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of an outer rotor permanent magnet hydro-generator according to an embodiment of the invention;
fig. 2 is a schematic diagram of a permanent magnet hydro-generator unit according to an embodiment of the invention.
Reference numerals:
100-shaft seats; 110-a main shaft; 111-cooling pipes;
200-rotating wheels; 210-a power generation chamber; 220-upper end cap; 230-a lower end cap; 240-a runner cylinder;
300-flabellum;
400-stator; 410-stator outlet cable;
500-rotor;
600-a first sealing device; 610-upper sealing cover; 611-upper spindle sealing sleeve; 620-lower sealing cover; 621-lower spindle sealing sleeve;
700-draining cone;
800-an upper fixing seat; 810-a support cover;
900-lower fixing seat; 910-a second water flow path; 911-wheel chamber; 912-draft tube;
1000-volute; 1010-first water flow path.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
Referring to fig. 1, in some embodiments of the invention, an outer rotor permanent magnet hydro-generator comprises:
the shaft seat 100 is provided with a main shaft 110;
the rotating wheel 200 is rotatably arranged on the main shaft 110, and a power generation cavity 210 is arranged in the rotating wheel 200;
the fan blades 300 are arranged on the outer side wall of the rotating wheel 200 and are driven by water flow to drive the rotating wheel 200 to rotate around the main shaft 110;
the stator 400 is disposed on the outer sidewall of the main shaft 110, and is located in the power generation chamber 210, and can be electrically connected to a power grid;
the rotor 500 is arranged on the inner side wall of the power generation cavity 210, and the rotor 500 and the stator 400 are arranged opposite to each other at intervals;
a first sealing means 600 for sealing the gap between the main shaft 110 and the rotating wheel 200 to seal the power generation chamber 210.
Specifically, during use, the water flow impacts the fan blade 300, so that the fan blade 300 drives the rotating wheel 200 to rotate around the spindle 110 on the shaft seat 100, and when the rotating wheel rotates, the rotor 500 located in the power generation chamber 210 rotates relative to the stator 400 on the spindle 110, and the stator 400 outputs induced electromotive force at this time, so as to realize power generation.
Compared with the conventional water turbine, the rotating wheel 200 and the generator are respectively and independently arranged, the generator is directly hidden in the power generation cavity 210 of the rotating wheel 200, and when the fan blades 300 are driven by water flow, the rotor 500 rotates relative to the stator 400 to realize power generation, a factory building for independently placing the generator is not required to be built, and the manufacturing cost is reduced.
The power generation chamber 210 is isolated from the water flow by the first sealing device 600, so that the power generator can smoothly generate power to approach the waterproof effect when the power generator is separately arranged.
Referring to fig. 1, in some embodiments of the present invention, the rotor 200 has a first rotation axis, the rotor 200 includes an upper end cover 220, a lower end cover 230, and a hollow rotor cylinder 240, the rotor cylinder 240 is disposed along the first rotation axis, the upper end cover 220 covers one end of the rotor cylinder 240, the lower end cover 230 covers the other end of the rotor cylinder 240, the upper end cover 220, the lower end cover 230, and the rotor cylinder 240 form a power generation chamber 210, and the upper end cover 220 and the lower end cover 230 are rotatably connected to the main shaft 110.
Specifically, by providing the rotor cylinder 240, the upper end cover 220 and the lower end cover 230 to surround the power generation chamber 210, when the rotor 500 and the stator 400 are installed in the power generation chamber 210, the installation can be realized only by detaching the upper end cover 220 or the lower end cover 230, and the installation is simpler and more convenient.
Referring to fig. 1, in some embodiments of the present invention, the first sealing means 600 includes an upper sealing cap 610 and a lower sealing cap 620, the upper end cap 220 is rotatably coupled to the main shaft 110 through an upper bearing, and the lower end cap 230 is rotatably coupled to the main shaft 110 through a lower bearing;
the upper sealing cover 610 covers the connection part between the upper bearing and the upper end cover 220 and is positioned on one surface of the upper end cover 220 far away from the power generation cavity 210, an upper main shaft sealing sleeve 611 is arranged on one surface of the upper sealing cover 610 far away from the upper end cover 220, and the upper main shaft sealing sleeve 611 extends out of the upper sealing cover 610 and is used for sleeving and dynamically sealing the main shaft 110;
the lower sealing cover 620 is covered at the connection part of the lower bearing and the lower end cover 230 and is positioned on one surface of the lower end cover 230 far away from the power generation cavity 210, a lower spindle sealing sleeve 621 is arranged on one surface of the lower sealing cover 620 far away from the lower end cover 230, and the lower spindle sealing sleeve 621 extends out of the lower sealing cover 620 for sleeving and dynamically sealing the spindle 110.
Specifically, in this embodiment, by providing the upper sealing cover 610, the upper sealing cover 610 can seal the connection between the upper end cover 220 and the main shaft 110, so as to seal one end of the power generation chamber 210, and then the lower sealing cover 620 seals the connection between the lower end cover 230 and the main shaft 110, so as to seal the other end of the power generation chamber 210, so as to seal the whole power generation chamber 210.
Referring to fig. 1, in some embodiments of the present invention, the first sealing device 600 further includes a water drain cone 700, where the water drain cone 700 is disposed on a side of the lower end cap 230 away from the power generation chamber 210, for changing the flow direction of the water flow.
Specifically, the water discharge cone 700 is configured such that when the water flow impacts the water discharge cone 700, the water flow can flow along the axial direction of the main shaft 110, so as to reduce the rebound of the water flow, thereby reducing the formation of vortex, and being more beneficial to the movement of the water flow along the flow direction of the water flow.
Referring to fig. 1, in some embodiments of the present invention, stator 400 is provided with stator windings, and the wire-assembling material of the stator windings is water-resistant winding wire with a crosslinked polyethylene insulating nylon sheath.
Specifically, the material of the stator winding assembly line is set to be the water-resistant winding line of the crosslinked polyethylene insulating nylon sheath, so that the water-resistant and oil-resistant effects of the stator winding assembly line are better, and the long-term use of the stator winding is facilitated.
Referring to fig. 1, in some embodiments of the present invention, a cooling pipe 111 is provided in the main shaft 110, and the cooling pipe 111 passes through the power generation chamber 210 to cool the stator 400 in the power generation chamber 210.
Specifically, because the stator 400 and the rotor 500 are both disposed in the power generation chamber 210, more heat is easily generated when the rotor 500 rotates, and the outer wall side of the rotor 200 contacts with water flow, the rotor 500 can dissipate heat through flowing water flow, the stator 400 can dissipate heat through the cooling pipe 111 disposed on the main shaft 110, and the heat dissipation of the stator 400 is achieved, so that the service environments of the stator 400 and the rotor 500 are improved, and the power generation efficiency is improved.
Referring to fig. 1, in some embodiments of the present invention, a stator outlet cable 410 is further included, where one end of the stator outlet cable 410 is electrically connected to the stator 400, and the other end passes through the main shaft 110 for electrical connection to the power grid.
Specifically, the stator 400 generates electric energy to be transmitted to the power grid by providing the stator outlet cable 410, so as to realize power supply.
Referring to fig. 2, the technical solution adopted by the embodiment of the second aspect of the present invention is: a permanent magnet hydro-generator unit comprising: the outer rotor permanent magnet hydro-generator used in the embodiment of the first aspect of the invention is described above.
Specifically, through setting up above-mentioned external rotor permanent magnet hydraulic generator, when the installation, need not to set up the factory building of generator alone, save construction cost.
In addition, other structures of the hydro-generator set are known to those skilled in the art, and will not be described herein.
Referring to fig. 1, in some embodiments of the present invention, the spiral case 1000 is transversely disposed between the upper fixing base 800 and the lower fixing base 900, a first transverse water flow channel 1010 is formed around the spiral case 1000, the upper fixing base 800 and the lower fixing base 900, a second longitudinal water flow channel 910 is disposed on the lower fixing base 900, the second water flow channel 910 is located at the center of the spiral case 1000 and is communicated with the first water flow channel 1010, water can enter the second water flow channel 910 from the first water flow channel 1010, a rotating wheel chamber 911 is disposed at the connection position of the second water flow channel 910 and the first water flow channel 1010, the rotating wheel 200 is disposed in the rotating wheel chamber 911, a supporting cover 810 is disposed at the opposite position of the upper fixing base 800 and the second water flow channel 910, the shaft seat 100 is disposed on the supporting cover 810, and the main shaft 110 extends from the shaft seat 100 to the second water flow channel 910.
Specifically, all be equipped with water guiding device on the conventional hydraulic turbine, water guiding device can dredge rivers to speed and the size of control rivers, and directly generate electricity through the rotation of runner 200 and flabellum 300, realize the variable speed operation electricity generation of runner 200, structurally simpler, reduced manufacturing cost, and have water can directly generate electricity, the generated energy is more.
Of course, a water guide may be provided in the present invention.
Referring to fig. 1, in some embodiments of the present invention, a draft tube 912 is further provided on the second water flow path 910, the draft tube 912 is in communication with the runner chamber 911, and is located at the rear of the runner chamber 911 in the water flow direction, and the diameter of the draft tube 912 is larger than the diameter of the runner chamber 911.
Specifically, the diameter of the draft tube 912 is larger than the diameter of the wheel housing 911 so that the flow rate of the water is slowed down as it flows through the draft tube 912 along the wheel housing 911 to smoothly guide the water downstream.
Of course, the present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the claims.
Claims (8)
1. An outer rotor permanent magnet hydro-generator, comprising:
a shaft seat (100) provided with a main shaft (110);
the rotating wheel (200) is rotatably arranged on the main shaft (110), and a power generation cavity (210) is arranged in the rotating wheel (200);
the fan blades (300) are arranged on the outer side wall of the rotating wheel (200) and are driven by water flow to drive the rotating wheel (200) to rotate around the main shaft (110);
a stator (400) disposed on an outer side wall of the main shaft (110) and located in the power generation chamber (210) and capable of being electrically connected to a power grid;
a rotor (500) disposed on an inner side wall of the power generation chamber (210), the rotor (500) being disposed opposite to the stator (400) with a space therebetween;
-first sealing means (600) for sealing a gap between the main shaft (110) and the rotor (200) to seal the power generation chamber (210);
the rotating wheel (200) is provided with a first rotating axis, the rotating wheel (200) comprises an upper end cover (220), a lower end cover (230) and a hollow rotating wheel cylinder body (240), the rotating wheel cylinder body (240) is arranged along the first rotating axis, the upper end cover (220) is covered at one end of the rotating wheel cylinder body (240), the lower end cover (230) is covered at the other end of the rotating wheel cylinder body (240), the upper end cover (220), the lower end cover (230) and the rotating wheel cylinder body (240) are surrounded to form the power generation cavity (210), and the upper end cover (220) and the lower end cover (230) are rotationally connected with the main shaft (110);
the first sealing device (600) comprises an upper sealing cover (610) and a lower sealing cover (620), the upper end cover (220) is rotationally connected with the main shaft (110) through an upper bearing, and the lower end cover (230) is rotationally connected with the main shaft (110) through a lower bearing;
the upper sealing cover (610) is covered at the joint of the upper bearing and the upper end cover (220), and is positioned on one surface of the upper end cover (220) far away from the power generation cavity (210), an upper main shaft sealing sleeve (611) is arranged on one surface of the upper sealing cover (610) far away from the upper end cover (220), and the upper main shaft sealing sleeve (611) extends out of the upper sealing cover (610) and is used for sleeving and dynamically sealing the main shaft (110);
the lower sealing cover (620) is covered at the joint of the lower bearing and the lower end cover (230), and is positioned on one surface of the lower end cover (230) away from the power generation cavity (210), a lower main shaft sealing sleeve (621) is arranged on one surface of the lower sealing cover (620) away from the lower end cover (230), and the lower main shaft sealing sleeve (621) extends out of the lower sealing cover (620) and is used for sleeving and dynamically sealing the main shaft (110).
2. The outer rotor permanent magnet hydro-generator of claim 1 wherein: the water leakage device further comprises a water leakage cone (700), wherein the water leakage cone (700) is arranged on one surface, far away from the power generation cavity (210), of the lower end cover (230).
3. An outer rotor permanent magnet hydro-generator as defined in any one of claims 1 to 2 wherein: the stator (400) is provided with a stator winding, and the winding material of the stator winding is water-resistant winding wires of a crosslinked polyethylene insulating nylon sheath.
4. An outer rotor permanent magnet hydro-generator as defined in any one of claims 1 to 2 wherein: a cooling pipe (111) is arranged in the main shaft (110), and the cooling pipe (111) passes through the power generation chamber (210) to cool the stator (400) in the power generation chamber (210).
5. An outer rotor permanent magnet hydro-generator as defined in any one of claims 1 to 2 wherein: the electric power generation device further comprises a stator outgoing cable (410), wherein one end of the stator outgoing cable (410) is electrically connected with the stator (400), and the other end of the stator outgoing cable passes through the main shaft (110) and is used for being electrically connected with a power grid.
6. A hydro-generator set, comprising: the outer rotor permanent magnet hydro-generator of any one of claims 1 to 5.
7. The hydro-generator set of claim 6, wherein: still include fixing base (800), fixing base (900) and spiral case (1000) down, spiral case (1000) set up in between fixing base (800) and the fixing base (900) down, spiral case (1000) go up fixing base (800) with surround between fixing base (900) down and form horizontal first water runner (1010), be equipped with fore-and-aft second water runner (910) down on fixing base (900), second water runner (910) are located the center department of spiral case (1000) and with first water runner (1010) are linked together, rivers can follow first water runner (1010) get into in second water runner (910), second water runner (910) with the junction of first water runner (1010) is equipped with runner room (911), runner (200) set up in runner room (911), go up fixing base (800) with the opposite of second water runner (910) is equipped with supporting lid (810), shaft seat (100) set up in main shaft (100) are followed in shaft seat (110) stretch out to second water runner (910).
8. The hydro-generator set of claim 7, wherein: and a draft tube (912) is further arranged on the second water flow passage (910), the draft tube (912) is communicated with the rotating wheel chamber (911) and is positioned behind the rotating wheel chamber (911) along the water flow direction, and the diameter of the draft tube (912) is larger than that of the rotating wheel chamber (911).
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| CN202210157831.4A CN114567120B (en) | 2022-02-21 | 2022-02-21 | Outer rotor permanent magnet hydraulic generator and hydraulic generator set |
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| CN202210157831.4A CN114567120B (en) | 2022-02-21 | 2022-02-21 | Outer rotor permanent magnet hydraulic generator and hydraulic generator set |
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| CN114567120B true CN114567120B (en) | 2024-02-06 |
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| CN201065807Y (en) * | 2007-07-10 | 2008-05-28 | 中国水利水电科学研究院 | High specific speed packaged axial flow fixed paddle type turbine generation unit |
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| CN114567120A (en) | 2022-05-31 |
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