CN106329781A - Motor rotor ventilation structure with multi-structure combined-type channel steel - Google Patents
Motor rotor ventilation structure with multi-structure combined-type channel steel Download PDFInfo
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- CN106329781A CN106329781A CN201610776704.7A CN201610776704A CN106329781A CN 106329781 A CN106329781 A CN 106329781A CN 201610776704 A CN201610776704 A CN 201610776704A CN 106329781 A CN106329781 A CN 106329781A
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- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a motor rotor ventilation structure with a multi-structure combined-type channel steel, and the structure mainly comprises a radial ventilation duct, rotor teeth, axial ventilation channels, a rotor core, and a channel steel. The rotor core is uniformly divided into a plurality of segments, and gaps are respectively disposed between the adjacent iron cores, thereby forming the radial ventilation duct. The rotor teeth of the adjacent rotor core segments are axially corresponding to each other in a one-to-one manner. The ventilation channels are located in the radial ventilation duct, are arranged along the periphery and are respectively installed between the rotor teeth of the adjacent rotor core segments. Two linear channel steels with the rectangular cross section and one streamline channel steel with the I-shaped cross section are disposed between the rotor teeth of the adjacent rotor core segments. A part, close to a rotating shaft, of the rotor core is slotted, thereby forming the axial ventilation channel, and providing a path for the flowing of a cooling medium. The structure can improve the flowing path of the cooling medium in a rotor, and improves the flowing efficiency of the cooling medium.
Description
Technical field
The present invention relates to a kind of motor rotor ventilation structure with many structural groupings formula channel-section steel, belong to motor ventilation technology
And manufacture and design field.
Background technology
In high power density motor internal, electric machine rotor iron core segmentation, between stack of lamination, form radial ducts, included groove
Steel, plays the effect of support member.Meanwhile, during electric machine rotation, rotor ventilation channel-section steel can play to a certain extent
The effect of fan, and cooling medium flow behavior can be improved.China Patent No. is the work shape described in 201320330289.4
Cross section channel-section steel, can effectively promote intensity, but not take into full account that channel-section steel changes the effect of gas flowing；China Patent No. is
Many replicated structures channel-section steel described in 201420848187.6, beats the boundary region between the cooling gas flowing through brokenly air duct, increases
Area of dissipation, but junction windage easily forms eddy current relatively greatly.Above two channel-section steel structure all fails efficiently to utilize leading of channel-section steel
Fluidity energy and pectinid performance.
Summary of the invention
The technology of the present invention solves problem: overcome existing motor to cause owing to rotor ventilation channel-section steel utilization rate is the highest
The problem of ventilation effect difference, proposes effectively to promote the aeration structure of rotor wind dispelling ability, makes motor internal cooling medium flowing effect
Rate improves relatively, and cooling effect makes moderate progress.
The technical solution of the present invention is: with the motor rotor ventilation structure of many structural groupings formula channel-section steel, mainly wrap
Include Radial ventilation duct (1), rotor tooth (2), axial ventilation road (3), rotor core (4) and channel-section steel (5).Rotor core (4) edge
Axially uniformly being divided into several sections, hop count n length D axial with rotor is relevant, i.e. n=5.3 × 10-3D～4.8 × 10-3D.Adjacent
Leave a fixed gap between rotor core (4), form Radial ventilation duct (1), the axial width L of Radial ventilation duct (1) and motor
Rotor internal diameter R1, rotor diameter R2Relevant with axial length D, i.e. L=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130
]2.Rotor tooth (2) one_to_one corresponding in the axial direction of adjacent segmented rotor (4) unshakable in one's determination, channel-section steel (5) is positioned at Radial ventilation duct (1)
In and circumferentially, and be arranged between the rotor tooth (2) of adjacent sectional rotor core (4), adjacent sectional rotor core (4)
Each rotor tooth (2) between be placed with three channel-section steels (5), rotor core (4) is slotted at the rotating shaft, forms axial ventilation road
(3), providing path for cooling medium flowing, wherein, axial ventilation road (3) Cross section Design is circular, diameter of phi and rotor
Internal diameter R1, rotor diameter R2Relevant, i.e. Φ=1/7 (R2-R1)～1/6 (R2-R1), axial ventilation road (3) from rotating shaft the most nearby with
Radial distance W=1/2 Φ between rotor core (4) inner circle, adjacent two axial ventilation road (3) central points and rotor core (4)
Angle α=18 ° of initial point line.Described three channel-section steels are divided into three kinds of specifications, and one is square-section linear type channel-section steel, and it is divided into
Two kinds of different lengths, longer square-section linear type channel-section steel refers to " long steel ", and shorter square-section linear type channel-section steel is used
" short steel " refers to；Another kind is the streamlined channel-section steel in I-shaped cross-section, and its length is between above two square-section linear type channel-section steel
Between length, refer to " middle steel ".I-shaped cross-section streamlined channel-section steel height L2With rotor internal diameter R1, rotor diameter R2With
Axial length D is relevant, for L2=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2, channel cross-section width W2High with channel-section steel
Degree L2Relevant, for W2=1/2L2～1/3L2, channel-section steel web width W3With channel cross-section width W2Relevant, for W3=1/2W2～1/3W2, groove
Steel listrium height L3With channel-section steel height L2Relevant, for L3=0.09L2～0.11L2, the channel-section steel listrium hypotenuse near web side and web
Limit angle β is designed as 130 °～136 °, square-section linear type channel-section steel height L4With rotor internal diameter R1, rotor diameter R2With
Axial length D is relevant, for L4=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2, channel cross-section width W4High with channel-section steel
Degree L4Relevant, for W4=1/2L4～1/3L4.I-shaped cross-section streamlined channel-section steel width W1With channel cross-section width W2Relevant, for W1
=1.79W2～1.85W2, the segmental arc radius R of the streamlined channel-section steel in I-shaped cross-section3With channel-section steel height L2Relevant, for R3=4.3L2~
4.6L2, the straight length L of a segmental arc1=1.93R3。
Described long steel length L7=(2R2-R1)/15～(2R2-R1)/13, short steel length L5=(2R2-R1)/36～(2R2-
R1)/33.Middle steel is the streamlined channel-section steel in I-shaped cross-section, is made up of 3.5 segmental arcs, length and rotor internal diameter R1Outside with rotor
Footpath R2Relevant, for L6=(2R2-R1)/21～(2R2-R1)/19.Described each channel-section steel be installed on two rotor pinions between logical
In wind ditch, each tooth is installed three channel-section steels, respectively one above-mentioned long steel, an above-mentioned middle steel and an above-mentioned short steel.
Channel-section steel distance Edge Distance W unshakable in one's determination5With tooth width L8Relevant, i.e. W5=L8/10.At channel-section steel distal shaft end, short steel is away from its nearest neighbours tooth
Distance L on limit9With channel-section steel height L2Relevant, L9=L2/ 2～2L2/3.Long steel at channel-section steel distal shaft end away from its nearest tooth back gauge L10
With short steel distance L away from its nearest neighbours tooth limit9Equal, i.e. L10=L9, middle steel and distance L on distance steel nearest tooth limit11With streamline
Type channel-section steel width W1, facewidth L8With channel cross-section width W2Relevant, i.e. L11=L8/2-(W1-W2)/4.Between middle steel and short steel the shortest
Spacing is L12=L8/5-(W1-W2)/4, on the whole, long steel, middle steel and short steel are circumferentially in regularity distribution, and adjacent three turn
The channel-section steel that sub-tooth is corresponding is one group, and the preferably mounting means of the channel-section steel (I, II, III in Fig. 8) on three teeth of any one group is by suitable
Clockwise is followed successively by " short steel ", " middle steel ", " long steel ", " short steel ", " middle steel ", " long steel ", " long steel ", " middle steel ", " short steel ".
Present invention advantage compared with prior art is: be placed with between each rotor tooth of adjacent sectional rotor core
Two square-section linear type channel-section steels and a streamlined channel-section steel in I-shaped cross-section, flow through rotor air quantity from changing in various degree,
Strengthen motor internal gas flow capability, reach more preferable cooling effect, make motor temperature under identical running status lower.
Accompanying drawing explanation
Fig. 1 is electric machine rotor iron core aeration structure schematic diagram；
Fig. 2 is part A enlarged drawing in Fig. 1；
Fig. 3 is front view and the right view of electric machine rotor iron core aeration structure in Fig. 1, and wherein Fig. 3 a is front view, Fig. 3 b
For right view；
Fig. 4 is I-shaped cross-section streamlined rotor channel-section steel schematic diagram and top view, and wherein Fig. 4 a is I-shaped cross-section streamline
Shape rotor channel-section steel schematic diagram, Fig. 4 b is I-shaped cross-section streamlined rotor channel-section steel top view；
Fig. 5 is square-section linear rotor channel-section steel schematic diagram；
Fig. 6 is I-shaped cross-section streamlined channel-section steel and square-section linear channel-section steel sectional view, and wherein Fig. 6 a is I-shaped
Gross section streamlines shape channel cross-section figure, Fig. 6 b is square-section linear channel-section steel sectional view；
Fig. 7 is channel-section steel distribution schematic diagram in one rotor radial air duct cross section of motor；
Fig. 8 is part B enlarged drawing in Fig. 7；
Fig. 9 is C portion enlarged drawing in Fig. 8.
Detailed description of the invention
The preferred embodiment of the present invention is elaborated below according to accompanying drawing.
(Fig. 2 is part A enlarged drawing in Fig. 1, and Fig. 3 a is Fig. 1 front view, and Fig. 3 b is that Fig. 1 is right as shown in Figure 1, Figure 2 and Figure 3
View), the motor rotor ventilation structure with many structural groupings formula channel-section steel of the present invention, mainly include Radial ventilation duct
(1), rotor tooth (2), axial ventilation road (3), rotor core (4) and channel-section steel (5).For big at 1MW～1000MW of capacity
In type motor, rotor core (4) is the most uniformly divided into several sections, and hop count n length D axial with rotor is relevant, i.e. n=5.3
×10-3D～4.8 × 10-3D.Adjacent rotor leaves a fixed gap between (4) unshakable in one's determination, forms Radial ventilation duct (1), radial ventilation
The axial width L of ditch (1) and rotor internal diameter R1, rotor diameter R2Relevant with axial length D, i.e. L=[(D-3R2+3R1)/
150]2～[(D-3R2+3R1)/130]2.Rotor tooth (2) one_to_one corresponding in the axial direction of adjacent segmented rotor (4) unshakable in one's determination, groove
Steel (5) is positioned in Radial ventilation duct (1) and circumferentially, and be arranged on adjacent sectional rotor core (4) rotor tooth (2) it
Between, it being placed with three channel-section steels (5) between each rotor tooth (2) of adjacent sectional rotor core (4), rotor core (4) is near turning
Slot at axle, form axial ventilation road (3), provide path, wherein, axial ventilation road (3) Cross section Design for cooling medium flowing
For circle, diameter of phi and rotor internal diameter R1, rotor diameter R2Relevant, i.e. Φ=1/7 (R2-R1)～1/6 (R2-R1), axially
Ventilating duct (3) is from rotating shaft radial distance W=1/2 Φ the most nearby and between rotor core (4) inner circle, adjacent two axial ventilation roads
(3) central point and angle α=18 ° of rotor core (4) initial point line.In the present embodiment, rotor internal diameter is R1=
1800mm, rotor diameter is R2=2842mm, rotor core (4) axial length D=3570mm, through optimizing design, can turn
The hop count n=17～19 of son (4) segmentation unshakable in one's determination, preferably 18, the axial length L=8.78mm of Radial ventilation duct (1)～
11.62mm, preferably 10mm, diameter of phi=148.86, axial ventilation road～173.67mm, preferably 166.42mm, W=83.21mm.
In order to more preferably improve ventilation effect, channel-section steel of the present invention is divided into three kinds of specifications, and one is square-section linear type
Channel-section steel, it is divided into two kinds of different lengths, and channel-section steel extends straight structure, as it is shown in figure 5, wherein, longer square-section is straight
Line style channel-section steel refers to " long steel ", and shorter square-section linear type channel-section steel refers to " short steel "；Another kind is I-shaped cross-section
Streamlined channel-section steel, its length is between the linear type channel-section steel length of above two square-section, and channel-section steel undulate formula extends
Structure, as shown in fig. 4 a one section of actual whole channel-section steel (this figure only show), hereinafter refer to " middle steel ".Described I-shaped cross-section
As shown in Figure 6, wherein Fig. 6 a is the streamlined channel-section steel in I-shaped cross-section in the cross section of streamlined channel-section steel and square-section linear type channel-section steel
Sectional view, Fig. 6 b is square-section linear type channel cross-section figure.For ensureing the intensity of the streamlined channel-section steel in I-shaped cross-section, to I-shaped
The tee section streamlined channel-section steel height (L in Fig. 6 a2), channel cross-section width (W in Fig. 6 a2), channel-section steel web width (W in Fig. 6 a3) and
High (the L in Fig. 6 a of channel-section steel listrium3) it is optimized design.Wherein, channel-section steel height L2With rotor internal diameter R1, rotor diameter R2
Relevant with axial length D, for L2=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2, channel cross-section width W2With channel-section steel
Highly L2Relevant, for W2=1/2L2～1/3L2, channel-section steel web width W3With channel cross-section width W2Relevant, for W3=1/2W2～1/3W2,
Channel-section steel listrium height L3With channel-section steel height L2Relevant, for L3=0.09L2～0.11L2, in the present embodiment, rotor internal diameter is R1
=1800mm, rotor diameter is R2=2842mm, rotor core (4) axial length D=3570mm, therefore L2=8.78mm～
11.62mm, preferably 10mm, W2=3.33mm～5.00mm, preferably 4.11mm, W3=1.37mm～2.06mm, preferably 1.52mm,
L3=0.9mm～1.1mm, preferably 1mm.The channel-section steel listrium hypotenuse near web side and web limit angle β be designed as 130 °～
136 °, in this example preferably 135 °.Square-section linear type channel-section steel height L4With rotor internal diameter R1, rotor diameter R2And axle
Relevant to length D, for L4=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2, channel cross-section width W4With channel-section steel height
L4Relevant, for W4=1/2L4～1/3L4.Wherein, L4=8.78mm～11.62mm, preferably 10mm, W4=3.33mm～5.00mm,
Preferably 4.11mm.I-shaped cross-section streamlined channel-section steel top view as shown in Figure 4 b, I-shaped cross-section streamlined channel-section steel width W1With
Channel cross-section width W2Relevant, i.e. W1=1.79W2～1.85W2, W herein1=7.36mm～7.60mm, preferably 7.51mm.Design
I-shaped cross-section streamlined channel-section steel size is as follows: segmental arc radius R3(for the radius of maximum deflection point), design and channel-section steel height L2Have
Close, i.e. R3=4.3L2～4.6L2, i.e. R3=43mm～46mm, preferably 45mm.The straight length L of one segmental arc1=1.93R3, i.e.
86.85mm.It is so designed that pectinid effect is the most obvious.Adjacent two arc segment structures are equivalently-sized, and bending direction is contrary.
In Fig. 7, Fig. 8 and Fig. 9 are a rotor radial air duct cross section, (Fig. 8 is part B in Fig. 7 to channel-section steel scheme of installation
Enlarged drawing, Fig. 9 is C portion enlarged drawing in Fig. 8).Described in the present embodiment, square-section linear type channel-section steel is divided into long steel and short steel, its
Length and rotor internal diameter R1With rotor diameter R2Relevant, the longest steel length L7=(2R2-R1)/15～(2R2-R1)/13,
Short steel length L5=(2R2-R1)/36～(2R2-R1)/33.Middle channel-section steel is the streamlined channel-section steel in I-shaped cross-section, by 3.5 segmental arcs
(i.e. 3 whole arcs and 1 half arc) form, length also with rotor internal diameter R1With rotor diameter R2Relevant, length L6=(2R2-
R1)/21～(2R2-R1)/19.In the present embodiment, rotor internal diameter R1=1800mm, rotor diameter R2=2842mm, then L7
=258.93mm～289.77mm, preferably 275mm, L6=184.95mm～204.42mm, preferably 195mm, L5=107.89mm～
117.7mm, preferably 110mm.Described each channel-section steel be installed on two rotor pinions between air duct in, on each tooth install three
Root channel-section steel, respectively one above-mentioned long steel, an above-mentioned middle steel and an above-mentioned short steel.Three channel-section steels distance edge unshakable in one's determination away from
From W5With tooth width L8Relevant, i.e. W5=L8/10.In channel-section steel distal shaft end, short steel distance L away from its nearest neighbours tooth limit9High with channel-section steel
Degree L2Relevant, L9=L2/ 2～2L2/ 3, direction radially extends to axle.Long steel at channel-section steel distal shaft end away from its nearest tooth back gauge L10
With short steel distance L away from its nearest neighbours tooth limit9Equal, i.e. L10=L9, middle steel and distance L on distance steel nearest tooth limit11With streamline
Type channel-section steel width W1, facewidth L8With channel cross-section width W2Relevant, i.e. L11=L8/2-(W1-W2)/4, direction all radially extend to
Axle.Owing to middle steel is streamlined, in, between short channel-section steel, spacing is variate, and channel-section steel width W streamlined with I-shaped cross-section1, tooth
Wide L8With channel cross-section width W2Relevant, shortest spacing L12=L8/5-(W1-W2)/4, channel-section steel extends to axle.In the present embodiment, tooth
Wide L8=40mm, W1=7.51mm, W2=4.11mm, i.e. L9=L10=5mm～6.67mm, preferably 6.01mm；L11=19.24mm,
L12=7.24mm.On the whole, long steel, middle steel and short steel circumferentially in regularity distribution, the groove that adjacent three rotor tooths are corresponding
Steel is one group, and the preferably mounting means of the channel-section steel (I, II, III in Fig. 8) on three teeth of any one group is the most successively
For " short steel ", " middle steel ", " long steel ", " short steel ", " middle steel ", " long steel ", " long steel ", " middle steel ", " short steel ".In like manner, by motor
All tooth is divided into the most misaligned some groups counterclockwise, and the rule of each group is identical.
The above, the only detailed description of the invention of the present invention, but the protection of the present invention is not limited thereto, this area skill
Art personnel are not in the case of changing principle, and any improvement without substantial variations made also should be regarded as the protection model of the present invention
Enclose.
The content not being described in detail in description of the invention belongs to prior art known to professional and technical personnel in the field.
Claims (2)
1. with the motor rotor ventilation structure of many structural groupings formula channel-section steel, it is characterised in that: mainly include Radial ventilation duct
(1), rotor tooth (2), axial ventilation road (3), rotor core (4) and channel-section steel (5).Rotor core (4) is the most uniformly divided into
Several sections, hop count n length D axial with rotor is relevant, i.e. n=5.3 × 10-3D～4.8 × 10-3D.Adjacent rotor is unshakable in one's determination to (4)
Between leave a fixed gap, form Radial ventilation duct (1), the axial width L of Radial ventilation duct (1) and rotor internal diameter R1、
Rotor diameter R2Relevant with axial length D, i.e. L=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2.Adjacent divides
Rotor tooth (2) one_to_one corresponding in the axial direction of section rotor core (4), channel-section steel (5) is positioned in Radial ventilation duct (1) and circumferentially divides
Cloth, and be arranged between the rotor tooth (2) of adjacent sectional rotor core (4), each rotor tooth of adjacent sectional rotor core (4)
(2) being placed with three channel-section steels (5) between, rotor core (4) is slotted at rotating shaft, forms axial ventilation road (3), is situated between for cooling
The dynamic path that provides of mass flow, wherein, axial ventilation road (3) Cross section Design is circular, diameter of phi and rotor internal diameter R1, outside rotor
Footpath R2Relevant, i.e. Φ=1/7 (R2-R1)～1/6 (R2-R1), axial ventilation road (3) from rotating shaft the most nearby with in rotor core (4)
The angle of the radial distance W=1/2 Φ between circle, adjacent two axial ventilation road (3) central points and rotor core (4) initial point line
α=18 °.Described three channel-section steels are divided into the square-section linear type channel-section steel of two different lengths and an I-shaped cross-section streamlined
Channel-section steel, I-shaped cross-section streamlined channel-section steel height L2With rotor internal diameter R1, rotor diameter R2Relevant with axial length D, for L2
=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2, channel cross-section width W2With channel-section steel height L2Relevant, for W2=1/
2L2～1/3L2, channel-section steel web width W3With channel cross-section width W2Relevant, for W3=1/2W2～1/3W2, channel-section steel listrium height L3With channel-section steel
Highly L2Relevant, for L3=0.09L2～0.11L2, the channel-section steel listrium hypotenuse near web side and web limit angle β are designed as
130 °～136 °, square-section linear type channel-section steel height L4With rotor internal diameter R1, rotor diameter R2It is relevant with axial length D,
For L4=[(D-3R2+3R1)/150]2～[(D-3R2+3R1)/130]2, channel cross-section width W4With channel-section steel height L4Relevant, for W4=
1/2L4～1/3L4.I-shaped cross-section streamlined channel-section steel width W1With channel cross-section width W2Relevant, for W1=1.79W2~
1.85W2, the segmental arc radius R of the streamlined channel-section steel in I-shaped cross-section3With channel-section steel height L2Relevant, for R3=4.3L2～4.6L2, one
The straight length L of segmental arc1=1.93R3。
Motor rotor ventilation structure with many structural groupings formula channel-section steel the most according to claim 1, it is characterised in that: institute
Stating square-section linear type channel-section steel is divided into two kinds of different lengths, longer square-section linear type channel-section steel to refer to, relatively with " long steel "
Short square-section linear type channel-section steel refers to " short steel "；The streamlined channel-section steel in described I-shaped cross-section, its length is between above-mentioned two
Plant between the linear type channel-section steel length of square-section, refer to " middle steel ".The longest steel length L7=(2R2-R1)/15～(2R2-
R1)/13, short steel length L5=(2R2-R1)/36～(2R2-R1)/33.Middle steel is the streamlined channel-section steel in I-shaped cross-section, by 3.5
Segmental arc forms, length and rotor internal diameter R1With rotor diameter R2Relevant, for L6=(2R2-R1)/21～(2R2-R1)/19.Institute
State each channel-section steel be installed on two rotor pinions between air duct in, on each tooth install three channel-section steels, on respectively one
The long steel stated, an above-mentioned middle steel and an above-mentioned short steel.Three channel-section steel distance Edge Distance W unshakable in one's determination5With tooth width L8It is relevant,
I.e. W5=L8/10.In channel-section steel distal shaft end, short steel distance L away from its nearest neighbours tooth limit9With channel-section steel height L2Relevant, L9=L2/ 2～
2L2/3.Long steel at channel-section steel distal shaft end away from its nearest tooth back gauge L10With short steel distance L away from its nearest neighbours tooth limit9Equal, i.e. L10
=L9, middle steel and distance L on distance steel nearest tooth limit11With streamlined channel-section steel width W1, facewidth L8With channel cross-section width W2Have
Close, i.e. L11=L8/2-(W1-W2)/4.Between middle steel and short steel, shortest spacing is L12=L8/5-(W1-W2)/4, on the whole, long
Steel, middle steel and short steel are circumferentially in regularity distribution, and the channel-section steel that adjacent three rotor tooths are corresponding is one group, any one group
Channel-section steel mounting means on three teeth is followed successively by " short steel ", " middle steel ", " long steel ", " short steel ", " middle steel ", " length in the direction of the clock
Steel ", " long steel ", " middle steel ", " short steel ".
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| CN201610776704.7A CN106329781A (en) | 2016-08-29 | 2016-08-29 | Motor rotor ventilation structure with multi-structure combined-type channel steel |
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| CN104617690A (en) * | 2015-03-04 | 2015-05-13 | 哈尔滨电机厂有限责任公司 | Overflowing fanning strip for strengthening cooling of motor stator |
| CN204559256U (en) * | 2015-03-05 | 2015-08-12 | 哈尔滨电机厂有限责任公司 | A kind of novel gas flow parts |
| CN104953766A (en) * | 2015-06-17 | 2015-09-30 | 北京金风科创风电设备有限公司 | Radial ventilation cooling structure of motor |
| CN105680602A (en) * | 2016-04-18 | 2016-06-15 | 哈尔滨理工大学 | Motor convenient for fluid flowing |
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| CN201466817U (en) * | 2009-06-30 | 2010-05-12 | 上海电气电站设备有限公司 | Laser welded airduct wall structure for stator core of generator |
| CN103269138A (en) * | 2013-06-17 | 2013-08-28 | 哈尔滨理工大学 | Multi-inner cavity U-shaped cooling system of motor |
| CN203607943U (en) * | 2013-11-13 | 2014-05-21 | 南阳防爆集团股份有限公司 | High-efficiency high-rotating speed high-capacity self-lubricating flame-proof motor rotor structure |
| CN104617690A (en) * | 2015-03-04 | 2015-05-13 | 哈尔滨电机厂有限责任公司 | Overflowing fanning strip for strengthening cooling of motor stator |
| CN204559256U (en) * | 2015-03-05 | 2015-08-12 | 哈尔滨电机厂有限责任公司 | A kind of novel gas flow parts |
| CN104953766A (en) * | 2015-06-17 | 2015-09-30 | 北京金风科创风电设备有限公司 | Radial ventilation cooling structure of motor |
| CN105680602A (en) * | 2016-04-18 | 2016-06-15 | 哈尔滨理工大学 | Motor convenient for fluid flowing |
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Application publication date: 20170111 |