CN105391241A - Radial permanent magnet suspension impact type direct-connected micro-hydro generator - Google Patents

Radial permanent magnet suspension impact type direct-connected micro-hydro generator Download PDF

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Publication number
CN105391241A
CN105391241A CN201510930468.5A CN201510930468A CN105391241A CN 105391241 A CN105391241 A CN 105391241A CN 201510930468 A CN201510930468 A CN 201510930468A CN 105391241 A CN105391241 A CN 105391241A
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CN
China
Prior art keywords
rotor
micro
permanent magnet
bucket
runner
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Granted
Application number
CN201510930468.5A
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Chinese (zh)
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CN105391241B (en
Inventor
古亮
蒋新
贺娟
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Chongqing University of Technology
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Chongqing University of Technology
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Priority to CN201510930468.5A priority Critical patent/CN105391241B/en
Publication of CN105391241A publication Critical patent/CN105391241A/en
Application granted granted Critical
Publication of CN105391241B publication Critical patent/CN105391241B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • 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
    • F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
    • F03B1/02—Buckets; Bucket-carrying rotors
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • 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
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a radial permanent magnet suspension impact type direct-connected micro-hydro generator. The micro-hydro generator comprises a main case and a rotor shaft, a runner and a disc-shaped rotor are arranged on the rotor shaft, and an external diameter cylindrical surface of the runner is provided with buckets; the main case is provided with disc-shaped stators, two ends of the rotor shaft are respectively installed on the main case through magnetic bearings, and axial stop blocks and pressure pipelines are fixed on the main case. The water is introduced into the buckets through the pressure pipelines to drive the rotor shaft and the rotor to rotate so as to realize the generation; the disc-shaped rotor and the disc-shaped stators are adopted so that the a stator winding is capable of maximally cutting magnetic lines in the rotating process of the rotor, and the generation efficiency is high; when the water enters the pressure pipelines, impact force of symmetric waterflow enables tips of two ends of the rotor shaft to break away from the axial smooth stop blocks, the complete suspension is realized; the rotation of the rotor shaft is free from mechanical friction, the friction loss is reduced, the energy exchange efficiency can be improved, the service life of the generator can be prolonged; and meanwhile, the daily maintenance can be avoided, the motor cost and the running cost are low.

Description

The micro-water generator of radial permanent magnet suspension impact direct connection
Technical field
The present invention relates to a kind of generator, particularly a kind of minisize hydroelectric generator.
Background technology
Micro-water power utilizes the minute water resource of the low water head low discharge near electric load to generate electricity, without the need to power transformation, directly for the hydroelectric power system of user.Micro-water power is the important channel solving environment and re-sources contradiction, has important strategic importance to the general advance promoting China and other country particularly developing country's electrification of the countryside, sustainable development and society.
But current micro-water generating efficiency is general lower, as America and Europe, utilizing the mode of speed governing, make the efficiency of micro-water power reach 70-80%, and China is in order to reduce development cost, use not speed governing to coordinate the mode of dummy load to generate electricity, transformation efficiency is extremely low, about 20-40%.In order to improve conversion efficiency, particularly micro-water generating efficiency, is developed several maglev hydroelectric generator.
Patent 201220544617.6 gives a kind of magnetic suspension hydroelectric generator, and runner connects generating by pulley electric motor.Because belt pulley has friction, efficiency is not high; And rotor has no idea to land.
Magnetic levitation hydro-generator disclosed in patent 201310358998.8, due to employing is axial flow turbine, axially has comparatively high thrust, the hybrid magnetic suspension guarantee runner comprising electromagnetism must be used to suspend completely, so complex structure cost is high, there is additional electrical energy consumption.
Therefore be necessary to develop a kind of low cost, the efficient magnetic suspension hydroelectric generator of energy practical application.
Summary of the invention
In view of this, the invention provides the micro-water generator of a kind of radial permanent magnet suspension impact direct connection, existing micro-water generator energy transformation ratio be low to solve, high in cost of production problem.
The micro-water generator of radial permanent magnet suspension impact direct connection of the present invention, comprise casing and armature spindle, described armature spindle is fixedly installed runner and disk type rotor, the end face of described disk type rotor is provided with the round rotor magnet be circumferentially evenly arranged, the outer diameter cylindrical of described runner is evenly provided with bucket on the surface, the inner chamber of described bucket is made up of the left arch shaped cavity of symmetrical shape and right arch shaped cavity, and the cross section of bucket inner chamber is m shape; Described casing is fixedly installed dish type stator, the end face of described dish type stator has stator without iron core winding;
The two ends of described armature spindle are arranged on casing respectively by magnetic bearing, and armature spindle to have the circular cone stretching out magnetic bearing top, described casing is also fixed with the axial limiting block that the tip top with circular cone coordinates;
Described casing is also provided with penstock water under high pressure being introduced bucket, described penstock is arranged symmetrically with relative to the inner chamber plane of symmetry of bucket, and the arc bottommost just to left arch shaped cavity and right arch shaped cavity is distinguished at the delivery port center of penstock.
Further, the outer ring of described magnetic bearing and inner ring arranged in dislocation in the axial direction.
Further, the axial both sides of described runner are respectively arranged with a dish type stator, the end face of described runner are also provided with the rotor magnet be circumferentially evenly arranged.
Further, there is between the tip that described circular cone is top and the end face of axial limiting block the gap of 0.1 ~ 1mm.
Beneficial effect of the present invention:
The micro-water generator of radial permanent magnet suspension impact direct connection of the present invention, water is introduced bucket drives rotor shaft and rotor turns realization generating by penstock by it, it adopts disk type rotor and dish type stator, stator winding can cutting magnetic line to greatest extent in rotary course to make rotor, and generating efficiency is high; And when force pipe way water, the impulsive force of symmetrical current makes the top disengaging in armature spindle two ends axially smooth guide vane end stop, symmetric pressure duct injection water jets under high pressure out can offset the minimum out-of-balance force of axis that two ends magnetic bearing on armature spindle produces, reach the object of rotor axial permanent magnet suspension, realize suspending completely, armature spindle rotates mechanical friction, reduce frictional dissipation, energy conversion efficiency can be improved, extend the useful life of generator, it can realize exempting from regular maintenance simultaneously, motor cost and operating cost low, be particularly suitable for the generating of micro-water resources.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the micro-water generator of the present embodiment radial permanent magnet suspension impact direct connection;
Fig. 2 is when penstock is anhydrous, and bucket departs from equilbrium position view to the right;
Fig. 3 is when penstock is anhydrous, and bucket departs from equilbrium position view left;
Fig. 4 is for when penstock has water, and bucket is in equilbrium position view under water impact effect.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, the micro-water generator of the present embodiment radial permanent magnet suspension impact direct connection, comprise casing and armature spindle 1, described armature spindle is fixedly installed runner 2 and disk type rotor 3, the end face of described disk type rotor is provided with the round rotor magnet 4 be circumferentially evenly arranged, the outer diameter cylindrical of described runner is evenly provided with bucket 5 on the surface, and the inner chamber of described bucket is made up of the left arch shaped cavity 51 of symmetrical shape and right arch shaped cavity 52, and the cross section of bucket inner chamber is m shape; Described casing is fixedly installed dish type stator 6, the end face of described dish type stator has stator without iron core winding 7;
The two ends of described armature spindle are arranged on casing respectively by magnetic bearing 8, and armature spindle has the circular cone stretching out magnetic bearing top 9, described casing are also fixed with the axial limiting block 10 that the tip top with circular cone coordinates;
Described casing is also provided with the penstock 11 water under high pressure being introduced bucket, described penstock is arranged symmetrically with relative to the inner chamber plane of symmetry of bucket, and the arc bottommost just to left arch shaped cavity and right arch shaped cavity is distinguished at the delivery port center of penstock.
The micro-water generator of the present embodiment radial permanent magnet suspension impact direct connection, originally water is introduced bucket drives rotor shaft and rotor turns realization generating by penstock by it, it adopts disk type rotor and dish type stator, stator winding can cutting magnetic line to greatest extent in rotary course to make rotor, and generating efficiency is high; When force pipe way is anhydrous, rotor radial magnetic suspension, one end of axle withstands on a smooth guide vane end stop of axis; When force pipe way water, the impulsive force of symmetrical current makes the top disengaging in armature spindle two ends axially smooth guide vane end stop, symmetric pressure duct injection water jets under high pressure out can offset the minimum out-of-balance force of axis that two ends magnetic bearing on armature spindle produces, reach the object of rotor axial permanent magnet suspension, realize suspending completely; Armature spindle rotates mechanical friction, reduces frictional dissipation, and can improve energy conversion efficiency, extend the useful life of generator, it can realize exempting from regular maintenance simultaneously, motor cost and operating cost low, be particularly suitable for the generating of micro-water resources.
As the optimization to the present embodiment, the outer ring 81 of described magnetic bearing and inner ring 82 arranged in dislocation in the axial direction, magnetic bearing is made to have a little axial thrust to armature spindle, near axial limiting block bearing outer ring by bearing inner race and rotor axial armature spindle third side to pushing away, and the principle that the rotating speed of this axial thrust and armature spindle is proportional, therefore when rotor high-speed rotates, axial thrust is larger, under the thrust of two radial direction magnetic bearings, the axial suspension that armature spindle can be more stable is at the mid point of axial limiting block.
As the optimization to the present embodiment, the axial both sides of described runner 2 are respectively arranged with a dish type stator, the end face of described runner are also provided with the rotor magnet 4 be circumferentially evenly arranged; The end face of runner also arranges rotor magnet, the energy output of this micro-water generator can be improved further.
As the optimization to the present embodiment, there is between the end face of the tip that described circular cone is top and axial limiting block the gap of 0.1 ~ 1mm, top and the axial limiting block of circular cone leaves gap and can ensure that armature spindle freely rotates, gap length in the present embodiment arranges rationally, and excesssive gap can be avoided to cause rotor seriously to depart from equilbrium position in the axial direction.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.

Claims (4)

1. the micro-water generator of radial permanent magnet suspension impact direct connection, comprise casing and armature spindle, it is characterized in that: described armature spindle is fixedly installed runner and disk type rotor, the end face of described disk type rotor is provided with the round rotor magnet be circumferentially evenly arranged, the outer diameter cylindrical of described runner is evenly provided with bucket on the surface, the inner chamber of described bucket is made up of the left arch shaped cavity of symmetrical shape and right arch shaped cavity, and the cross section of bucket inner chamber is m shape; Described casing is fixedly installed dish type stator, the end face of described dish type stator has stator without iron core winding;
The two ends of described armature spindle are arranged on casing respectively by magnetic bearing, and armature spindle to have the circular cone stretching out magnetic bearing top, described casing is also fixed with the axial limiting block that the tip top with circular cone coordinates;
Described casing is also provided with penstock water under high pressure being introduced bucket, described penstock is arranged symmetrically with relative to the inner chamber plane of symmetry of bucket, and the arc bottommost just to left arch shaped cavity and right arch shaped cavity is distinguished at the delivery port center of penstock.
2. the micro-water generator of radial permanent magnet suspension impact direct connection according to claim 1, is characterized in that: the outer ring of described magnetic bearing and inner ring arranged in dislocation in the axial direction.
3. the micro-water generator of radial permanent magnet suspension impact direct connection according to claim 1, is characterized in that: the axial both sides of described runner are respectively arranged with a dish type stator, the end face of described runner are also provided with the rotor magnet be circumferentially evenly arranged.
4. the micro-water generator of radial permanent magnet suspension impact direct connection according to claim 1, is characterized in that: the gap between the end face of the tip that described circular cone is top and axial limiting block with 0.1 ~ 1mm.
CN201510930468.5A 2015-12-14 2015-12-14 The micro- water generator of radial permanent magnet suspension impact direct connection Expired - Fee Related CN105391241B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105927454A (en) * 2016-05-30 2016-09-07 重庆理工大学 Axial flow magnetic suspension permanent magnet hydro-generator
CN110011516A (en) * 2019-05-10 2019-07-12 重庆理工大学 Air energy storage permanent magnetism floats micro- water generator
CN115251606A (en) * 2022-08-01 2022-11-01 江西万橡家具集团有限公司 Layered rotary steel bookshelf

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2035804U (en) * 1988-07-19 1989-04-12 四川省仪陇县校办企业公司 Vertical single-phase alternating-current permanent magnetic water turbine-generator
JPH1189133A (en) * 1997-09-05 1999-03-30 Fujitsu General Ltd Permanent magnet type motor
CN2693980Y (en) * 2003-09-12 2005-04-20 邓纯粹 Waterwheel generator
CN200941566Y (en) * 2006-07-31 2007-08-29 林修鹏 Low resistance disk-type windpower generator
CN101555905A (en) * 2008-04-08 2009-10-14 卓向东 Magnetic suspension bearing and suspended rotating shaft
CN102926939A (en) * 2012-11-30 2013-02-13 南京工业大学 Five-freedom full suspension vertical shaft disc type wind-driven generator
CN103397974A (en) * 2013-08-16 2013-11-20 重庆同利实业有限公司 Magnetic levitation hydro-generator
CN205178763U (en) * 2015-12-14 2016-04-20 重庆理工大学 Radial permanent magnetism suspension of associated mode assaults water generator that declines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2035804U (en) * 1988-07-19 1989-04-12 四川省仪陇县校办企业公司 Vertical single-phase alternating-current permanent magnetic water turbine-generator
JPH1189133A (en) * 1997-09-05 1999-03-30 Fujitsu General Ltd Permanent magnet type motor
CN2693980Y (en) * 2003-09-12 2005-04-20 邓纯粹 Waterwheel generator
CN200941566Y (en) * 2006-07-31 2007-08-29 林修鹏 Low resistance disk-type windpower generator
CN101555905A (en) * 2008-04-08 2009-10-14 卓向东 Magnetic suspension bearing and suspended rotating shaft
CN102926939A (en) * 2012-11-30 2013-02-13 南京工业大学 Five-freedom full suspension vertical shaft disc type wind-driven generator
CN103397974A (en) * 2013-08-16 2013-11-20 重庆同利实业有限公司 Magnetic levitation hydro-generator
CN205178763U (en) * 2015-12-14 2016-04-20 重庆理工大学 Radial permanent magnetism suspension of associated mode assaults water generator that declines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105927454A (en) * 2016-05-30 2016-09-07 重庆理工大学 Axial flow magnetic suspension permanent magnet hydro-generator
CN110011516A (en) * 2019-05-10 2019-07-12 重庆理工大学 Air energy storage permanent magnetism floats micro- water generator
CN110011516B (en) * 2019-05-10 2023-10-31 重庆理工大学 Air energy-storage permanent-magnet floating micro-water generator
CN115251606A (en) * 2022-08-01 2022-11-01 江西万橡家具集团有限公司 Layered rotary steel bookshelf
CN115251606B (en) * 2022-08-01 2023-12-05 江西万橡家具集团有限公司 Layered rotary steel book shelf

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