CN106130256A - A kind of integration paperback efficient excitation mixed-flow wheel electromotor - Google Patents

A kind of integration paperback efficient excitation mixed-flow wheel electromotor Download PDF

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Publication number
CN106130256A
CN106130256A CN201610468634.9A CN201610468634A CN106130256A CN 106130256 A CN106130256 A CN 106130256A CN 201610468634 A CN201610468634 A CN 201610468634A CN 106130256 A CN106130256 A CN 106130256A
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China
Prior art keywords
armature
cover
excitation
fixing cover
paperback
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CN201610468634.9A
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Chinese (zh)
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郭远军
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Individual
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Priority to CN201610468634.9A priority Critical patent/CN106130256A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • 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
    • 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

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  • 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)

Abstract

The invention discloses a kind of integration paperback efficient excitation mixed-flow wheel electromotor, including the first armature mechanism, second armature mechanism, excitation mechanism, seal closure body mechanism, draft tube, stator mechanism, runner and spiral case, spiral case, stator mechanism, runner and draft tube constitute water stream channel successively, seal closure body mechanism includes rotary cover and fixing cover, rotary cover and fixing cover connect and compose the toroidal cavity of closing coaxially through sealing bearing, first armature mechanism, excitation mechanism and the first armature mechanism sequentially coaxially go up, in, lower floor is arranged in toroidal cavity side by side, excitation mechanism is arranged on middle part in rotary cover, first armature mechanism is arranged on fixing cover internal upper part, second armature mechanism is arranged on bottom in fixing cover；Integration paperback efficient excitation mixed-flow wheel generator life of the present invention is long, and construction cost is relatively low with production management cost, and excitation efficiency is high, water energy transformation efficiency height.

Description

A kind of integration paperback efficient excitation mixed-flow wheel electromotor
Technical field
The present invention relates to hydroelectric facility field, particularly relate to a kind of integration paperback efficient excitation mixed-flow wheel generating Machine.
Background technology
Hydroturbine generator can be divided into impulse turbine and the big class of reaction turbine two by operation principle.Impact type water The runner of turbine is rotated by the impact of current, and in work process, the pressure of current is constant, mainly the conversion of kinetic energy；Counterattack The runner of the formula hydraulic turbine is rotated by the counteracting force of current in water, and in work process, the pressure of current all can have with kinetic energy Change, but mainly pressure can conversion.
Impulse turbine, owing to its active wheel only part crosses water, part bucket stress, therefore such hydraulic turbine necessary flow Less, relatively it is suitable for the generating place of low discharge high water head.Impulse turbine, can be divided into by the flow direction of current and cut the formula of hitting (again Claim bucket-type) and tilt-impulse type two class, under the conditions of isometrical water wheels, the stress arm of force cutting the formula of hitting is relatively big relative to tilt-impulse type, but runs Water wheels rotating speed is relatively small.
Reaction turbine can be divided into mixed-flow, axial-flow type, diagonal flow type and tubular.In Francis turbine, current Radially into stator mechanism, axially flow out runner；In axial flow hydraulic turbine, current radially into stator, axially into and stream Go out runner；In inclined flow turbine, current flow to runner radially into stator favouring the direction of a certain angle of main shaft, Or flow to stator and runner to favour the direction of main shaft；In tubular turbine, current flow to stator and runner vertically. Axial-flow type, tubular and inclined flow turbine also can be divided into by its structure determines paddle and rotary propeller type.The runner bucket determining paddle is Fix；The runner bucket of rotary propeller type can be in operation and rotate, to adapt to the change of head and load around sharf.Currently make With relatively broad mainly axial-flow type and Francis turbine.
The generally existing problem of the existing hydraulic turbine is: 1) impeller of the hydraulic turbine need to pass through with electromotor and excitation electromotor Longer transmission shaft driven, and generally, the installation for the ease of power transmission shaft is changed, power transmission shaft junction can use flange Connect, simultaneously in order to maintain power transmission shaft stable rotation, it is to avoid eccentric rotary, can arrange multiple in the junction of rotating shaft and middle part Bearing, bearing increase the friction energy-dissipating that can strengthen in rotation process, bearing easily burns out because of temperature arrising caused by friction, and longer power transmission shaft When eccentric rotary occurs, it is easily caused and electromotor is caused damage；2) electromotor and the exciter of existing hydroturbine generator exists Work can produce substantial amounts of used heat (mainly by heavy current heat production in wire and bearing pivoting friction heat production), need to install specially Heat radiation, cooling system, when heat radiation, cooling system go wrong, be easily caused movement, bearing burns out, even and if Cooling system normally works down, and owing to stator and rotor are that inside and outside layer is distributed, the used heat of the rotor generation being positioned at internal layer need to pass through Stator is transmitted to the external world with rotor every space gap layer, and little every the heat conduction rate of space gap layer, internal layer rotor is deposited with outer layer stator In the bigger temperature difference, internal layer rotor easily burns；3), there are bigger current owing to utilizing at flow energy in the existing hydraulic turbine Kinetic energy is remaining and frictional heat is lost, and the utilization rate of flow energy is relatively low, present stage, the relatively high stable of axial flow hydraulic turbine Efficiency is only 90%；4) existing often group hydrogenerator is all the customization machine for different terrain, causes raw material, assembly, line Material and parts can not be general, it is impossible to enough batch productions；5) due to the stator in hydrogenerator, rotor, salient pole, power transmission shaft Needing to bear the stress of higher temperature or bigger Deng parts, the parts such as its stator, rotor, salient pole, power transmission shaft are to the strength of materials Require height；6) magnetic pole of Exciting Windings for Transverse Differential Protection is only capable of utilizing a wherein magnetic pole, and excitation efficiency is relatively low, and excitation energy consumption is bigger.Above-mentioned factor Causing bigger input cost and production management's cost to the construction in power station, and power station production production capacity is relatively low, part is little Type may utilize hydraulic power potentials and is wasted.
Summary of the invention
The technical problem to be solved is: 1) in existing hydroturbine generator, power transmission shaft and bearing be due to stress relatively Greatly, friction produce temperature higher, its loss is bigger；2) electromotor and the exciter of existing hydroturbine generator can produce greatly at work The used heat of amount, needs to install special cooling system, and the cooling effect of its cooling system is not good enough, easily burn movement；3) existing There is the relatively high stable efficiency of the hydraulic turbine only about 90%；4) existing hydrogenerator is all the customization machine for different terrain, There is larger difference in volume, it is impossible to enough batch productions；5) parts pair such as the stator in hydrogenerator, rotor, salient pole, power transmission shaft The strength of materials requires height；6) excitation efficiency of Exciting Windings for Transverse Differential Protection is low.
For solving its technical problem the technical solution adopted in the present invention it is: a kind of integration paperback efficient excitation mixed-flow Hydrogenerator, including the first armature mechanism, the second armature mechanism, excitation mechanism, seal closure body mechanism, draft tube, stator machine Structure, runner and spiral case；Spiral case, stator mechanism, runner and draft tube constitute water stream channel successively；
Seal closure body mechanism includes rotary cover and fixing cover, and rotary cover connects and composes closing with fixing cover coaxially through sealing bearing Toroidal cavity；
First armature mechanism, excitation mechanism and the second armature mechanism sequentially coaxially upper, middle and lower layer is arranged on toroidal cavity side by side In；
Excitation mechanism is arranged on middle part in rotary cover, and the first armature mechanism is arranged on fixing cover internal upper part, the second armature mechanism peace It is contained in bottom in fixing cover；
First armature mechanism includes that the first armature winding and the second armature winding, the first armature winding and the second armature winding are coaxial Inside and outside layer annular spread is at fixing cover internal upper part；
Second armature mechanism includes the 3rd armature winding and the 4th armature winding, and the 3rd armature winding and the 4th armature winding are coaxial Inside and outside layer annular spread bottom in fixing cover；
Excitation mechanism includes the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection, the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection coaxially in, Outer annular is distributed in middle part in rotary cover；
The lower ring excircle of runner is fixing connects rotary cover inner periphery, and fixing cover is fixedly mounted on draft tube upper end；
As optimizing explanation further, described rotary cover is provided with conduction brush at the joint gap of fixing cover, and conduction brush is used for The input of exciting current.
As optimizing further, the position, gap of described draft tube and stator mechanism and rotary cover arranges ceramic seal axle Hold；This kind of structure can improve the sealing of toroidal cavity, improves the working environment sealing bearing, and the stress reducing sealing bearing is born Lotus, reduces the friction of fixing cover and rotary cover.
As optimizing further, in order to have more preferable water resistance, described rotary cover sets with junction, fixing flaring angle Being equipped with the folding shape centrifugal drying waterside ring cooperated, the clearance aperture of folding shape centrifugal drying waterside ring is radially outward.
As optimizing further, in order to preferably strengthen water dumping effect and the wearability of folding shape centrifugal drying waterside ring, described It is also equipped with resin wear ring in the ring of folding shape centrifugal drying waterside.
Operation principle: this invention described integration paperback efficient excitation mixed-flow wheel electromotor, during work, current pass through The guiding of stator mechanism and control, flow into runner, and runner is rotated cover common rotation, rotary cover under the driving of water flow pressure Driving the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection to rotate, the upper end magnetic pole of the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection is cut respectively The lower end magnetic pole cutting the first armature winding and the coil of the second armature winding, the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection is cut respectively Cutting the 3rd armature winding and the 4th armature winding, the electric current of the first armature winding and the 3rd armature winding is powered for excitation, the Two armature winding and the 4th armature winding are used for exporting.
Integration paperback efficient excitation mixed-flow wheel electromotor of the present invention, due to its first armature mechanism and encouraging Magnetic mechanism is directly arranged between draft tube and runner by seal closure body mechanism, and the used heat that power generation operation process produces can be direct Reject heat in current by rotary cover and fixing cover, effectively eliminate special cold true cooling system.And, of the present invention Integrated paperback efficient excitation mixed-flow wheel electromotor, relative to the rotor structure pattern of conventional generator, its heat passes Lead without by between rotor and stator every dead level, its first armature mechanism and excitation mechanism used heat can directly reject heat to current In, compare existing generator heat-radiation mode, there is more preferable radiating effect, the problem burning movement can be prevented effectively from, increase The service life of equipment.
Additionally, due to the magnetic flux of two magnetic poles of generating Exciting Windings for Transverse Differential Protection is all used in cutting generator armature winding, Under equal exciting current, the relatively conventional excitation mode of excitation efficiency doubles
Beneficial effect: integration paperback efficient excitation mixed-flow wheel electromotor of the present invention, effectively eliminates routine Cold true cooling system, there is more preferable radiating effect, can be prevented effectively from the problem burning movement, increase the use longevity of equipment Life；Simultaneously as the first armature mechanism, excitation mechanism are integrated with runner, power transmission is without passing by power transmission shaft parts Dynamic, integration paperback efficient excitation mixed-flow wheel generating function of the present invention effectively avoid power transmission shaft eccentricity issues and Bearing friction energy consumption issues, simplifies the structure of hydroturbine generator, reduces material requirements, reduces equipment volume largely, The versatility of enhancing equipment, reduces power plant construction cost and production management's cost.
Additionally, integration paperback efficient excitation mixed-flow wheel electromotor of the present invention has higher transmission effect Rate, the stabilization efficiency of its hydraulic turbine generator is up to more than 93%, and excitation efficiency is high.
Accompanying drawing explanation
Fig. 1 is the vertical cross section TV structure schematic diagram of the present invention program one；
Fig. 2 is the excitation mechanism horizontal cross-sectional structural representation of the present invention program one；
Fig. 3 is the first armature mechanism horizontal cross-sectional structural representation of the present invention program one；
Fig. 4 is the second armature mechanism horizontal cross-sectional structural representation of the present invention program one；
Fig. 5 is the vertical cross section TV structure schematic diagram of the present invention program two；
Fig. 6 is to roll over shape centrifugal drying waterside ring structure enlarged diagram in the present invention program two；
Fig. 7 is to roll over shape centrifugal drying waterside ring structure enlarged diagram in the present invention program three；
In figure: 1a be the first armature mechanism, 11a be the first armature winding, 12a be the second armature winding, 1b be the second armature machine Structure, 11b are that the 3rd armature winding, 12b are the 4th armature winding, 2 are excitation mechanism, 21 are the first Exciting Windings for Transverse Differential Protection, 22 are second Exciting Windings for Transverse Differential Protection, 3 be seal closure body mechanism, 31 be rotary cover, 32 be fixing cover, 33 for seal bearing, 34 be toroidal cavity, 35 be Ceramic seal bearing, 36 be folding shape centrifugal drying waterside ring, 37 be resin wear ring, 4 be draft tube, 5 be stator mechanism, 6 for turn Wheel, 7 be spiral case, 8 be conduction brush.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe wholely；Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.
Scheme one (as shown in Figure 1, Figure 2, Figure 3 and Figure 4): a kind of integration paperback efficient excitation mixed-flow wheel generating Machine, including the first armature mechanism 1a, the second armature mechanism 1b, excitation mechanism 2, seal closure body mechanism 3, draft tube 4, stator mechanism 5, runner 6 and spiral case 7；Spiral case 7, stator mechanism 5, runner 6 and draft tube 4 constitute water stream channel successively；
Seal closure body mechanism 3 includes rotary cover 31 and fixing cover 32, and rotary cover 31 and fixing cover 32 are coaxially through sealing bearing 33 Connect and compose the toroidal cavity 34 of closing；
First armature mechanism 1a, excitation mechanism 2 and the second armature mechanism 1b sequentially coaxially upper, middle and lower layer are arranged on annular side by side In cavity 34；
Excitation mechanism 2 is arranged on middle part in rotary cover 31, and the first armature mechanism 1a is arranged on fixing cover 32 internal upper parts, the second armature Mechanism 1b is arranged on bottom in fixing cover 32；
First armature mechanism 1a includes the first armature winding 11a and the second armature winding 12a, the first armature winding 11a and second The coaxial inside and outside layer annular spread of armature winding 12a is at fixing cover 32 internal upper part；
Second armature mechanism 1b includes the 3rd armature winding 11b and the 4th armature winding 12b, the 3rd armature winding 11b and the 4th The coaxial inside and outside layer annular spread of armature winding 12b bottom in fixing cover 32；
Excitation mechanism 2 includes the first Exciting Windings for Transverse Differential Protection 21 and the second Exciting Windings for Transverse Differential Protection 22, the first Exciting Windings for Transverse Differential Protection 21 and the second Exciting Windings for Transverse Differential Protection 22 coaxial inside and outside layer annular spread are middle part in rotary cover 31；
Fixing rotary cover 31 inner periphery that connects of the lower ring excircle of runner 6, fixing cover 32 is fixedly mounted on draft tube 4 upper end；
Rotary cover 32 is provided with conduction brush 8 at the joint gap of fixing cover 33, and conduction brush 8 is used for being conductively connected extraneous rectification and sets Standby with excitation mechanism 2.
As further illustrating, in order to reduce the friction that rotary cover 32 is subject to, improve its sealing, described stator machine simultaneously Structure 5 arranges ceramic seal bearing 35 with the position, gap of rotary cover 32.
By such scheme one embodiment, the stable effect of described integration paperback efficient excitation mixed-flow wheel electromotor Rate, up to 93%, compares traditional axial flow type hydro-turbo generator, and efficiency improves about 4%.
Scheme two (as shown in Figure 5 and Figure 6): be with scheme one difference: in order to have more preferable water resistance, institute State rotary cover 32 to be connected edge with fixing cover 33 and be provided with the folding shape centrifugal drying waterside ring 36 cooperated, roll over shape and be centrifuged water dumping The clearance aperture of side ring 36 is radially outward.
Scheme three (as shown in Figure 7): be with scheme one difference: in order to preferably strengthen folding shape centrifugal drying waterside ring The water dumping effect of 36 and wearability, be also equipped with resin wear ring 37 in described folding shape centrifugal drying waterside ring 36.
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, Although being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it still may be used So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent, All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's Within protection domain.

Claims (5)

1. an integrated paperback efficient excitation mixed-flow wheel electromotor, including the first armature mechanism (1a), the second armature machine Structure (1b), excitation mechanism (2), seal closure body mechanism (3), draft tube (4), stator mechanism (5), runner (6) and spiral case (7)；Snail Shell (7), stator mechanism (5), runner (6) and draft tube (4) constitute water stream channel successively, and seal closure body mechanism (3) includes rotating Cover (31) and fixing cover (32), rotary cover (31) and fixing cover (32) connect and compose the ring of closing coaxially through sealing bearing (33) Shape cavity (34), the first armature mechanism (1a), excitation mechanism (2) and the second armature mechanism (1b) sequentially coaxially upper, middle and lower layer are also Row are arranged in toroidal cavity (34), and excitation mechanism (2) is arranged on middle part in rotary cover (31), and the first armature mechanism (1a) is installed At fixing cover (32) internal upper part, the second armature mechanism (1b) is arranged on fixing cover (32) interior bottom, and the first armature mechanism (1a) is wrapped Include the first armature winding (11a) and the second armature winding (12a), the first armature winding (11a) and the second armature winding (12a) same Axle inside and outside layer annular spread is at fixing cover (32) internal upper part, and the second armature mechanism (1b) includes the 3rd armature winding (11b) and Four armature winding (12b), the 3rd armature winding (11b) and the coaxial inside and outside layer annular spread of the 4th armature winding (12b) are fixing Cover (32) interior bottom, excitation mechanism (2) includes the first Exciting Windings for Transverse Differential Protection (21) and the second Exciting Windings for Transverse Differential Protection (22), the first Exciting Windings for Transverse Differential Protection (21) inside and outside layer annular spread coaxial with the second Exciting Windings for Transverse Differential Protection (22) middle part, lower ring cylindrical of runner (6) in rotary cover (31) Week fixing connection rotary cover (31) inner periphery, fixing cover (32) is fixedly mounted on draft tube (4) upper end.
Integration paperback efficient excitation mixed-flow wheel electromotor the most according to claim 1, it is characterised in that: described rotation Turn cover (31) and be provided with conduction brush (8) at the joint gap of fixing cover (32).
Integration paperback efficient excitation mixed-flow wheel electromotor the most according to claim 2, it is characterised in that: described rotation Turn cover (31) and be provided with pottery with the position, gap of draft tube (4) and the position, gap of rotary cover (31) and stator mechanism (5) Porcelain seals bearing (35).
Integration paperback efficient excitation mixed-flow wheel electromotor the most according to claim 3, it is characterised in that: described rotation Turn cover (31) and fixing cover (32) junction, corner is provided with folding shape centrifugal drying waterside ring (36) cooperated, roll over shape centrifugal drying The clearance aperture of waterside ring (36) is radially outward.
Integration paperback efficient excitation mixed-flow wheel electromotor the most according to claim 4, it is characterised in that: described folding Resin wear ring (37) it is also equipped with in shape centrifugal drying waterside ring (36).
CN201610468634.9A 2016-06-25 2016-06-25 A kind of integration paperback efficient excitation mixed-flow wheel electromotor Withdrawn CN106130256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610468634.9A CN106130256A (en) 2016-06-25 2016-06-25 A kind of integration paperback efficient excitation mixed-flow wheel electromotor

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Application Number Priority Date Filing Date Title
CN201610468634.9A CN106130256A (en) 2016-06-25 2016-06-25 A kind of integration paperback efficient excitation mixed-flow wheel electromotor

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Publication Number Publication Date
CN106130256A true CN106130256A (en) 2016-11-16

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Application publication date: 20161116