CN106014772A

CN106014772A - Double-rotor through flat assembling fixed blade through-flow type hydraulic generator

Info

Publication number: CN106014772A
Application number: CN201610468624.5A
Authority: CN
Inventors: 郭远军
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-25
Filing date: 2016-06-25
Publication date: 2016-10-12

Abstract

The invention discloses a double-rotor through flat assembling fixed blade through-flow type hydraulic generator. The double-rotor through flat assembling fixed blade through-flow type hydraulic generator comprises an armature rotor mechanism, an excitation rotor mechanism, a first turning wheel mechanism, a second turning wheel mechanism, a guide vane mechanism, a water inlet tube and a draft tube. The armature rotor mechanism and the excitation rotor mechanism are coaxially arranged in parallel front and back and are hollow; the circumferential inner diameter part of the armature rotor mechanism is fixedly connected with the first turning wheel mechanism; the circumferential inner diameter part of the excitation rotor mechanism is fixedly connected with the second turning wheel mechanism; the front side of the first turning wheel mechanism is in butt joint with the water inlet tube through a rotary bearing; the guide vane mechanism is installed inside the water inlet tube; and the rear side of the second turning wheel mechanism is in butt joint with the draft tube through a rotary bearing. The double-rotor through flat assembling fixed blade through-flow type hydraulic generator is free of ventilation systems or cooling water systems, high in power generation efficiency, good in universality, small in size, low in requirement for materials and long in service life, and a few consumables are needed.

Description

In a kind of birotor, logical paperback determines oar tubular-turbine generator

Technical field

The present invention relates to hydroelectric facility field, particularly relate to logical paperback in a kind of birotor and determine oar tubular-turbine generator.

Background technology

The hydraulic turbine can be divided into impulse turbine and the big class of reaction turbine two by operation principle.

The runner of impulse turbine is rotated by the impact of current, and in work process, the pressure of current is constant, mainly the conversion of kinetic energy；

The runner of reaction turbine is rotated by the counteracting force of current in water, in work process current pressure can and kinetic energy all change, but mainly pressure can conversion.

Impulse turbine can be divided into the formula of hitting of cutting (also known as bucket-type) and tilt-impulse type two class by the flow direction of current.

Reaction turbine can be divided into mixed-flow, axial-flow type, diagonal flow type and tubular；In Francis turbine, current, radially into water distributor, axially flow out runner；In axial flow hydraulic turbine, current radially into stator, axially into flow 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, diagonal flow type and tubular turbine also can be divided into by its structure determines paddle and rotary propeller type.The runner bucket determining paddle is fixing；The runner bucket of rotary propeller type can be in operation and rotate, to adapt to the change of head and load around sharf.

The water resource head of China is the most on the low side, wherein the water resource at about 10m accounts for the 5% of the total water resource of China, and the exploitation of this low water head resource are more difficult is suitable for by impulse turbine, axial flow hydraulic turbine and inclined flow turbine, thus the more low head hydropower station of China uses tubular turbine mostly.

The research work of China's tubular turbine is started late, but development is very fast, and the runner peak efficiency of present stage China's tubular turbine is 93%, but universal efficiency is about 86%.

The existing tubular turbine hydraulic turbine is all to connect electromotor by main shaft, thus drive the generator amature circumgyration incision magnetic line of force to generate electricity, the structure of the hydraulic turbine and electromotor at least needs three bearings, and indivedual models also need to use the servomotor that structure is complicated, involve great expense.

And existing hydrogenerator is required to design ventilating system to generator heat-radiation, design seals, need cooling water system to generator heat-radiation, need at least one thrust point, multiple bearings, stator, rotor, salient pole requires height to the strength of materials, temperature of rotor can not be measured in real time, often group hydrogenerator is all the customization machine for different terrain, cause raw material, assembly, wire rod and parts can not be general, can not produce in batches, owing to hydrogenerator uses water wheels, electromotor, exciter tandem attachment structure, cause bulky, need material many, directly contribute cost high.In the case of shell is constant, capacity can not arbitrarily adjust.

Summary of the invention

It is desirable to provide it is a kind of without ventilating system or the tubular-turbine generator of cooling water system；Meanwhile, this tubular-turbine generator, it is only necessary to two bearings, its stator, rotor can use conventionally fabricated, can measure temperature of rotor in real time, raw material can be general, and hydrogenerator can be produced in batches, small volume, cost is relatively low, and in the case of shell is constant, capacity can arbitrarily adjust.

Present invention provide the technical scheme that in a kind of birotor, logical paperback determines oar tubular-turbine generator, including armature rotor mechanism, excitation rotor mechanism, the first rotating wheel mechanisms that, the second rotating wheel mechanisms that, stator mechanism, water inlet pipe and draft tube；

It is characterized in that: before and after armature rotor mechanism is coaxial with excitation rotor mechanism side by side, armature rotor mechanism and excitation rotor mechanism are respectively at two parallel planes, hollow in the middle part of armature rotor mechanism and excitation rotor mechanism；

The circumference internal diameter of armature rotor mechanism is fixedly connected with the first rotating wheel mechanisms that, the circumference internal diameter of excitation rotor mechanism is fixedly connected with the second rotating wheel mechanisms that, the front side of the first rotating wheel mechanisms that is docked with water inlet pipe by rolling bearing, stator mechanism is arranged in water inlet pipe, and the rear side of the second rotating wheel mechanisms that is docked with draft tube by rolling bearing；

Armature rotor mechanism includes armature rotor iron core, interior armature post, external armature post, the first armature winding and the second armature winding, armature rotor iron core is patty, interior armature band of column shape is distributed on rear side of armature rotor iron core in the middle part of disc, external armature band of column shape is distributed on rear side of armature rotor iron core outside disc, and the side of interior armature post and external armature post is wound with the first armature winding and the second armature winding respectively；

Excitation rotor mechanism includes excitation rotor iron core, interior excitation post, outer excitation post, the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection, excitation rotor iron core is patty, interior excitation band of column shape is distributed on front side of excitation rotor iron core in the middle part of disc, outer excitation band of column shape is distributed on front side of excitation rotor iron core outside disc, and the side of interior excitation post and outer excitation post is wound with the first Exciting Windings for Transverse Differential Protection and the second Exciting Windings for Transverse Differential Protection respectively；

First rotating wheel mechanisms that includes the first rotating vane and the first runner, and the first rotating vane annular stationary distribution is at the first runner inner periphery；

Second rotating wheel mechanisms that includes the second rotating vane and the second runner, and the second rotating vane annular stationary distribution is at the second runner inner periphery；

The armature rotor iron core inner periphery of armature rotor mechanism fixes the first runner excircle connecting the first rotating wheel mechanisms that, the excitation rotor iron core inner periphery of excitation rotor mechanism fixes the second runner excircle connecting the second rotating wheel mechanisms that, the blade angle of the first rotating vane and the second rotating vane is contrary, turns to contrary；

The interior armature post of armature rotor mechanism and external armature the post flat interior excitation post to excitation rotor mechanism and outer excitation post, interior armature post and external armature post respectively rotate around its center axis.

As optimizing further, powering to simplify excitation, reduce external electric lead, described interior excitation post and the first Exciting Windings for Transverse Differential Protection can be substituted by permanent magnetism tappet.

As optimizing further, for the ease of monitoring the temperature of excitation rotor mechanism, the interior excitation post of excitation rotor mechanism or the inner core of outer excitation post are provided with temperature sense pipe.

As optimizing further, in order to reduce the magnetic strength eddy current heat production of armature rotor iron core in armature rotor mechanism, interior armature post and external armature post, and reduce excitation rotor iron core, interior excitation post and the magnetic strength eddy current heat production of outer excitation post in excitation rotor mechanism, in described armature rotor mechanism, armature rotor iron core, interior armature post and external armature post are built up by the stalloy of punching press, and in described excitation rotor mechanism, excitation rotor iron core, interior excitation post and outer excitation post are built up by the stalloy of punching press.

As optimizing further, in order to reduce magnetic flux leakage between excitation rotor iron core and interior excitation post and outer excitation post in excitation rotor mechanism, described excitation rotor iron core is built up by the stalloy of disjunctor with interior excitation post and outer excitation post.

As optimizing further, for the ease of the first armature winding in armature rotor mechanism and the installation of the second armature winding or capacity extensions, movable dismantled and assembled connection is taked in the connection between described interior armature post and external armature post and armature rotor iron core；As being uniformly arranged draw-in groove at armature rotor iron core disc, and interior armature post or external armature post are arranged in draw-in groove.

Operation principle: in birotor of the present invention, logical paperback determines oar tubular-turbine generator, during work, current enter from water inlet, and by the guiding of stator mechanism, flow to the first rotating vane and the second rotating vane successively, first rotating vane and the second rotating vane are obtained thrust by current counteracting force, and drive the first runner and the second runner to rotate respectively, and the first runner turns on the contrary with the second runner；When first runner rotates, armature rotor iron core is driven to rotate, when second runner rotates, excitation rotor iron core is driven to rotate, and make the first Exciting Windings for Transverse Differential Protection that the first armature winding in armature rotor mechanism and the second armature winding is respectively cut in excitation rotor mechanism and the magnetic field that the second Exciting Windings for Transverse Differential Protection produces, make the first armature winding and the second armature winding produce induced voltage.Wherein, the induced voltage of the first armature winding, for input the second Exciting Windings for Transverse Differential Protection, produces stronger excitation field, and the induced voltage of the second armature winding arrives the external world for output.

In birotor of the present invention, logical paperback determines oar tubular-turbine generator, traditional rotary wheel device, rotor machine are achieved integrated with excitation unit, the armature rotor mechanism heat production making rotor machine and excitation unit can directly reject heat in current by runner and rotating vane, can save the ventilating system in conventional power plants or cooling water system；Simultaneously as it possesses the prominent effect that thermal diffusivity is good, its stator, the thermostability of rotor material, heat conductivity, the requirement of thermal deformation reduce, and can use conventionally fabricated.

In addition, in birotor of the present invention, logical paperback determines oar tubular-turbine generator, owing to its rotary wheel device, rotor machine are integrated with excitation unit, power transmission is without by power transmission shaft parts transmission, bearing can not only be reduced use, can effectively avoid power transmission shaft eccentricity issues and bearing friction energy consumption issues simultaneously, enormously simplify the structure and material of hydroturbine generator, reduce equipment volume largely, and improve energy conversion efficiency；This equipment all can overall use under many situations of power plant construction, enhances the versatility of equipment significantly, decreases power plant construction cost and production management's cost.

In birotor of the present invention, logical paperback determines oar tubular-turbine generator, its armature rotor mechanism and excitation rotor mechanism are respectively at two parallel planes, the used heat of armature rotor mechanism and excitation rotor mechanism can reject heat in extraneous current by armature rotor iron core and excitation rotor iron core respectively, with the conventional radiating effect difference that rotor is built-in or the exterior existence of rotor is bigger, this kind of paperback frame mode, improves radiating efficiency largely.

Beneficial effect: in birotor of the present invention, logical paperback is determined oar tubular-turbine generator and has the advantage that 1. manufactures, installation cost are low; 2. eliminate the ventilation of routine, cooling system; 3. scale can produce (conventional hydrogenerator is customization) in batches; 4. volume saves more than 45%; 5. the relatively conventional hydroelectric station design of cost saves 40%, and 6. runner efficiency improves more than 8%；7. stator, rotor steel requirement of strength reduce, and can use conventional material manufacture, 8. save multiple bearings and power transmission shaft.

Accompanying drawing explanation

Fig. 1 is the vertical transverse sectional structure schematic diagram of the present invention program one；

Fig. 2 is vertical longitudinal sectional structure schematic diagram of armature rotor mechanism in the present invention program one；

Fig. 3 is vertical longitudinal sectional structure schematic diagram of excitation rotor mechanism in the present invention program one；

In figure: 1 be armature rotor mechanism, 11 be armature rotor iron core, 12 be interior armature post, 13 be external armature post, 14 be the first armature winding, 15 be the second armature winding, 2 be excitation rotor mechanism, 21 be excitation rotor iron core, 22 be interior excitation post, 23 be outer excitation post, 24 be the first Exciting Windings for Transverse Differential Protection, 25 be the second Exciting Windings for Transverse Differential Protection, 3 be the first rotating wheel mechanisms that, 31 be the first rotating vane, 32 be the first runner, 4 be stator mechanism, 5 be water inlet pipe, 6 be draft tube, 7 for temperature sense pipe.

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 clearly and completely described；Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

Scheme one (as depicted in figs. 1 and 2): in a kind of birotor, logical paperback determines oar tubular-turbine generator, including armature rotor mechanism 1, excitation rotor mechanism the 2, first rotating wheel mechanisms that 3a, the second rotating wheel mechanisms that 3b, stator mechanism 4, water inlet pipe 5 and draft tube 6；Before and after armature rotor mechanism 1 is coaxial with excitation rotor mechanism 2 side by side, armature rotor mechanism 1 and excitation rotor mechanism 2 are respectively at two parallel planes, hollow in the middle part of armature rotor mechanism 1 and excitation rotor mechanism 2；

The circumference internal diameter of armature rotor mechanism 1 is fixedly connected with the first rotating wheel mechanisms that 3a, the circumference internal diameter of excitation rotor mechanism 2 is fixedly connected with the second rotating wheel mechanisms that 3b, the front side of the first rotating wheel mechanisms that 3a is docked with water inlet pipe 5 by rolling bearing, stator mechanism 4 is arranged in water inlet pipe 5, and the rear side of the second rotating wheel mechanisms that 3b is docked with draft tube 6 by rolling bearing；

Armature rotor mechanism 1 includes armature rotor iron core 11, interior armature post 12, external armature post the 13, first armature winding 14 and the second armature winding 15, armature rotor iron core 11 is in patty, interior armature post 12 annular spread is on rear side of armature rotor iron core 11 in the middle part of disc, external armature post 13 annular spread is on rear side of armature rotor iron core 11 outside disc, and the side of interior armature post 12 and external armature post 13 is wound with the first armature winding 14 and the second armature winding 15 respectively；

Excitation rotor mechanism 2 includes excitation rotor iron core 21, interior excitation post 22, outer excitation post the 23, first Exciting Windings for Transverse Differential Protection 24 and the second Exciting Windings for Transverse Differential Protection 25, excitation rotor iron core 21 is in patty, interior excitation post 22 annular spread is on front side of excitation rotor iron core 21 in the middle part of disc, outer excitation post 23 annular spread is on front side of excitation rotor iron core 21 outside disc, and the side of interior excitation post 22 and outer excitation post 23 is wound with the first Exciting Windings for Transverse Differential Protection 24 and the second Exciting Windings for Transverse Differential Protection 25 respectively；

First rotating wheel mechanisms that 3a includes the first rotating vane 31a and the first runner 32a, and the first rotating vane 31a annular stationary distribution is at the first runner 32a inner periphery；Second rotating wheel mechanisms that 3b includes the second rotating vane 31b and the second runner 32b, and the second rotating vane 31b annular stationary distribution is at the second runner 32b inner periphery；

Armature rotor iron core 11 inner periphery of armature rotor mechanism 1 fixes the first runner 32a excircle connecting the first rotating wheel mechanisms that 3a, excitation rotor iron core 21 inner periphery of excitation rotor mechanism 2 fixes the second runner 32b excircle connecting the second rotating wheel mechanisms that 3b, the blade angle of the first rotating vane 31a and the second rotating vane 31b is contrary, turns to contrary；

The interior armature post 12 of armature rotor mechanism 1 and external armature the post 13 flat interior excitation post 22 to excitation rotor mechanism 2 and outer excitation post 23, interior armature post 12 and external armature post 13 respectively rotate around its center axis.

Concrete optimization as above-mentioned embodiment, in order to be able to reduce the magnetic strength eddy current heat production of armature rotor iron core 11 in armature rotor mechanism 1, interior armature post 12 and external armature post 13, and reduce excitation rotor iron core 21, interior excitation post 22 and the magnetic strength eddy current heat production of outer excitation post 23 in excitation rotor mechanism 2, in described armature rotor mechanism 1, armature rotor iron core 11, interior armature post 12 and external armature post 13 are built up by the stalloy of punching press, and in described excitation rotor mechanism 2, excitation rotor iron core 21, interior excitation post 22 and outer excitation post 23 are built up by the stalloy of punching press；

Concrete optimization as above-mentioned embodiment, in order to reduce magnetic flux leakage between excitation rotor iron core 21 and interior excitation post 22 and outer excitation post 23 in excitation rotor mechanism 2, described excitation rotor iron core 21 is built up by the stalloy of disjunctor with interior excitation post 22 and outer excitation post 23.

By such scheme one embodiment, in described birotor, logical paperback determine the stabilization efficiency of oar tubular-turbine generator up to 92%, compares the tubular-turbine generator of routine, efficiency raising about 6%.

Scheme two: be with scheme one difference: described interior excitation post 22 can be substituted by permanent magnetism tappet with the first Exciting Windings for Transverse Differential Protection 24；This kind of structure can simplify excitation and power, and reduces external electric lead.

Scheme three: be with scheme one difference: for the ease of monitoring the temperature of excitation rotor mechanism 2, the interior excitation post 22 of excitation rotor mechanism 2 or the inner core of outer excitation post 23 are provided with temperature sense pipe 7.

Scheme four: and scheme one difference is: movable dismantled and assembled connection is taked in the connection between described interior armature post 12 and external armature post 13 and armature rotor iron core 11, the rear side disc of armature rotor iron core 11 is uniformly arranged draw-in groove, and interior armature post 12 or external armature post 13 are arranged in draw-in groove, this kind of structure is easy to the first armature winding 14 and the installation of the second armature winding 15 or capacity extensions in armature rotor mechanism 1.

Last it is noted that the foregoing is only the preferred embodiments of the present invention; it is not limited to the present invention; although the present invention being described in detail with reference to previous embodiment; for a person skilled in the art; technical scheme described in foregoing embodiments still can be modified by it; or wherein portion of techniques feature is carried out equivalent; all within the spirit and principles in the present invention; the any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims

null1. in a birotor, logical paperback determines oar tubular-turbine generator，Including armature rotor mechanism (1)、Excitation rotor mechanism (2)、First rotating wheel mechanisms that (3a)、First rotating wheel mechanisms that (3b)、Stator mechanism (4)、Water inlet pipe (5) and draft tube (6)，It is characterized in that: before and after armature rotor mechanism (1) is coaxial with excitation rotor mechanism (2) side by side，Armature rotor mechanism (1) and excitation rotor mechanism (2) middle part is hollow,The circumference internal diameter of armature rotor mechanism (1) is fixedly connected with the first rotating wheel mechanisms that (3a)，The circumference internal diameter of excitation rotor mechanism (2) is fixedly connected with the second rotating wheel mechanisms that (3b)，The front side of the first rotating wheel mechanisms that (3a) is docked with water inlet pipe (5) by rolling bearing，Stator mechanism (4) is arranged in water inlet pipe (5)，The rear side of the second rotating wheel mechanisms that (3b) is docked with draft tube (6) by rolling bearing，Armature rotor mechanism (1) includes armature rotor iron core (11)、Interior armature post (12)、External armature post (13)、First armature winding (14) and the second armature winding (15)，Armature rotor iron core (11) is in ring cheese，Interior armature post (12) annular spread is in the middle part of armature rotor iron core (11) rear side disc，External armature post (13) annular spread is outside armature rotor iron core (11) rear side disc，The side of interior armature post (12) and external armature post (13) is wound with the first armature winding (14) and the second armature winding (15) respectively，Excitation rotor mechanism (2) includes excitation rotor iron core (21)、Interior excitation post (22)、Outer excitation post (23)、First Exciting Windings for Transverse Differential Protection (24) and the second Exciting Windings for Transverse Differential Protection (25)，Excitation rotor iron core (21) is in ring cheese，Interior excitation post (22) annular spread is in the middle part of the disc of excitation rotor iron core (21) front side，Outer excitation post (23) annular spread is outside the disc of excitation rotor iron core (21) front side，The side of interior excitation post (22) and outer excitation post (23) is wound with the first Exciting Windings for Transverse Differential Protection (24) and the second Exciting Windings for Transverse Differential Protection (25) respectively，First rotating wheel mechanisms that (3a) includes the first rotating vane (31a) and the first runner (32a)，First rotating vane (31a) annular stationary distribution is at the first runner (32a) inner periphery，Second rotating wheel mechanisms that (3b) includes the second rotating vane (31b) and the second runner (32b)，Second rotating vane (31b) annular stationary distribution is at the second runner (32b) inner periphery，Fixing the first runner (32a) excircle connecting the first rotating wheel mechanisms that (3a) of armature rotor iron core (11) inner periphery of armature rotor mechanism (1),Fixing the second runner (32b) excircle connecting the second rotating wheel mechanisms that (3b) of excitation rotor iron core (21) inner periphery of excitation rotor mechanism (2),First rotating vane (31a) is contrary with the blade angle of the second rotating vane (31b)，Turn to contrary，The interior armature post (12) of armature rotor mechanism (1) and external armature post (13) the flat interior excitation post (22) to excitation rotor mechanism (2) and outer excitation post (23) respectively，Interior armature post (12) and external armature post (13) rotate around its center axis.
In birotor the most according to claim 1, logical paperback determines oar tubular-turbine generator, it is characterised in that: described interior excitation post (22) can be substituted by permanent magnetism tappet with the first Exciting Windings for Transverse Differential Protection (24).
In birotor the most according to claim 1, logical paperback determines oar tubular-turbine generator, it is characterised in that: the interior excitation post (22) of excitation rotor mechanism (2) or the inner core of outer excitation post (23) are provided with temperature sense pipe (7).
In birotor the most according to claim 1, logical paperback determines oar tubular-turbine generator, it is characterized in that: in described armature rotor mechanism (1), armature rotor iron core (11), interior armature post (12) and external armature post (13) are built up by the stalloy of punching press, in described excitation rotor mechanism (2), excitation rotor iron core (21), interior excitation post (22) and outer excitation post (23) are built up by the stalloy of punching press.
In birotor the most according to claim 1, logical paperback determines oar tubular-turbine generator, it is characterised in that: described excitation rotor iron core (21) is built up by the stalloy of disjunctor with interior excitation post (22) and outer excitation post (23).
In birotor the most according to claim 1, logical paperback determines oar tubular-turbine generator, it is characterised in that: movable dismantled and assembled connection is taked in the connection between described interior armature post (12) and external armature post (13) and armature rotor iron core (11).