CN106253527A - There is the motor rotor ventilation structure of I-shaped cross-section channel-section steel - Google Patents
There is the motor rotor ventilation structure of I-shaped cross-section channel-section steel Download PDFInfo
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- CN106253527A CN106253527A CN201610776777.6A CN201610776777A CN106253527A CN 106253527 A CN106253527 A CN 106253527A CN 201610776777 A CN201610776777 A CN 201610776777A CN 106253527 A CN106253527 A CN 106253527A
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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
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- 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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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to a kind of motor rotor ventilation structure with I-shaped cross-section channel-section steel, mainly include Radial ventilation duct, rotor tooth, axial ventilation road, rotor core and channel-section steel.Rotor core is the most uniformly divided into several sections, a fixed gap is left between adjacent rotor iron core, form Radial ventilation duct, the rotor tooth one_to_one corresponding in the axial direction that adjacent segmented rotor is unshakable in one's determination, channel-section steel is positioned in Radial ventilation duct and circumferentially, and be arranged between adjacent sectional rotor core rotor tooth, the streamlined channel-section steel in I-shaped cross-section and I-shaped cross-section linear type channel-section steel it is placed with between each rotor tooth of adjacent sectional rotor core, rotor core is slotted at rotating shaft, form axial ventilation road, path is provided for cooling medium flowing, structure of the present invention gives full play to its pectinid ability and direct fluid effect, largely promote rotor dispersing thermal effect, and then lifting motor work efficiency.
Description
Technical field
The present invention relates to a kind of motor rotor ventilation structure with I-shaped cross-section 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: has the motor rotor ventilation structure of I-shaped cross-section channel-section steel, mainly includes
Radial ventilation duct (1), rotor tooth (2), axial ventilation road (3), rotor core (4) and channel-section steel (5).Rotor core (4) is along axle
To being uniformly divided into several sections, hop count n length D axial with rotor is relevant, i.e. n=D/184～D/210.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/840+ (R2-R1)/240～D/700+ (R2-R1)/200.Adjacent segmentation
Rotor tooth (2) one_to_one corresponding in the axial direction of 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 two 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=0.15 (R2-R1)～0.18 (R2-R1), axial ventilation road (3) from rotating shaft the most nearby with rotor core (4)
The folder of the radial distance W=1/2 Φ between inner circle, adjacent two axial ventilation road (3) central points and rotor core (4) initial point line
α=18 °, angle.Described two channel-section steels (5) are divided into two kinds of specifications, and one is the streamlined channel-section steel in I-shaped cross-section, and its length is longer, and one
Planting is I-shaped cross-section linear type channel-section steel, and its length is shorter, channel-section steel height L1With rotor internal diameter R1, rotor diameter R2And axle
Relevant to length D, for: L1=D/840+ (R2-R1)/240～D/700+ (R2-R1)/200, channel cross-section width W1With channel-section steel height
L1Relevant, for W1=1/2L1～1/3L1, channel-section steel web width W3With channel cross-section width W1Relevant, for W3=1/2W1～1/3W1, channel-section steel
Listrium height L3With channel-section steel height L1Relevant, for L3=0.09L1～0.11L1, the channel-section steel listrium hypotenuse near web side and web limit
Angle β is designed as 130 °～136 °, I-shaped cross-section streamlined channel-section steel width W2With channel cross-section width W1Relevant, for W2=
1.84W1～1.88W1, the segmental arc radius R of the streamlined channel-section steel in I-shaped cross-section3With channel-section steel height L1Relevant, i.e. R3=4.3L1~
4.6L1, the straight length L of the I-shaped cross-section each segmental arc of streamlined channel-section steel2=1.95R3。
The streamlined channel-section steel in described I-shaped cross-section is made up of 5 segmental arcs, its length L4=0.25R2-0.26R1～0.27R2-
0.25R1, I-shaped cross-section linear type channel-section steel length L5=0.10R2-0.11R1～0.13R2-0.12R1, it is positioned over two segmentations
In rotor core, two channel-section steels between respective rotor tooth are respectively on a streamlined channel-section steel in above-mentioned I-shaped cross-section and one
State I-shaped cross-section linear type channel-section steel.Two channel-section steel distance Edge Distance W unshakable in one's determination4With tooth width L6Relevant, for W4=L6/10.?
Channel-section steel distal shaft end, the rotor tooth Edge Distance L that linear type channel-section steel is closest7=4L6/ 19～6L6/19.For I-shaped cross-section
Streamlined channel-section steel, at channel-section steel distal shaft end, closest rotor tooth Edge Distance L8With facewidth L6Relevant, for L8=L6/ 8～L6/
4.Minimum range between the streamlined channel-section steel in I-shaped cross-section and I-shaped cross-section linear type channel-section steel is L9=L6/3-19R3/100+
W2/4.On the whole, the streamlined channel-section steel in I-shaped cross-section and I-shaped cross-section linear type channel-section steel circumferentially in regularity distribution, phase
The channel-section steel that adjacent three rotor tooths are corresponding is one group, and the channel-section steel mounting means of any one group is followed successively by " I-shaped in the direction of the clock
Tee section linear type channel-section steel ", " the streamlined channel-section steel in I-shaped cross-section ", " I-shaped cross-section linear type channel-section steel ", " I-shaped cross-section flow
Line style channel-section steel ", " the streamlined channel-section steel in I-shaped cross-section ", " I-shaped cross-section linear type channel-section steel ".
Present invention advantage compared with prior art is: take I-shaped cross-section streamlined rotor ventilation steel channel
Channel-section steel and I-shaped cross-section linear type channel-section steel, from changing the air quantity flowing through rotor in various degree, strengthen the flowing of motor internal gas
Performance, reaches more preferable cooling effect, makes 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 channel-section steel schematic diagram and top view, and wherein Fig. 4 a is the streamlined groove in I-shaped cross-section
Steel schematic diagram, Fig. 4 b is I-shaped cross-section streamlined channel-section steel top view；
Fig. 5 is I-shaped cross-section linear type channel-section steel schematic diagram；
Fig. 6 is the streamlined channel-section steel in I-shaped cross-section and the sectional view of I-shaped cross-section linear type channel-section steel；
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 I-shaped cross-section 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 capacity at the large-size machine of 1MW～350MW
In, 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=D/184～D/
210.Adjacent rotor leaves a fixed gap between (4) unshakable in one's determination, forms Radial ventilation duct (1), the axial width of Radial ventilation duct (1)
L and rotor internal diameter R1, rotor diameter R2Relevant with axial length D, i.e. L=D/840+ (R2-R1)/240～D/700+ (R2-
R1)/200.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
In ditch (1) and circumferentially, and be arranged between the rotor tooth (2) of adjacent sectional rotor core (4), adjacent sectional rotor ferrum
Being placed with two channel-section steels (5) between each rotor tooth (2) of the heart (4), rotor core (4) is slotted at rotating shaft, is formed axially
Ventilating duct (3), provides path for cooling medium flowing, and wherein, axial ventilation road (3) Cross section Design is circular, diameter of phi and electricity
Machine rotor internal diameter R1, rotor diameter R2Relevant, i.e. Φ=0.15 (R2-R1)～0.18 (R2-R1), axial ventilation road (3) are from rotating shaft
Radial distance W=1/2 Φ the most nearby and between rotor core (4) inner circle, adjacent two axial ventilation road (3) central point and rotors
Angle α=18 ° of (4) initial point line unshakable in one's determination.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 obtain the hop count n of rotor core (4) segmentation
=17～19, preferably 18, axial length L=8.58mm～10.31mm of Radial ventilation duct (1), preferably 10mm, axial ventilation road
Diameter of phi=156.30mm～187.56mm, preferably 165.34mm, W=83.47mm.
In order to more preferably improve ventilation effect, channel-section steel of the present invention (5) is divided into two kinds of specifications, a kind of for I-shaped cross-section stream
Line style channel-section steel, its length is longer, and channel-section steel undulate formula extended structure, and (this figure only shows actual whole channel-section steel as shown in Figure 4
One section)；One is I-shaped cross-section linear type channel-section steel, and its length is shorter, and channel-section steel extends straight structure, as shown in Figure 5.
The cross section of the streamlined channel-section steel in described I-shaped cross-section and I-shaped cross-section linear type channel-section steel is all I-shaped, as shown in Figure 6.Existing
The I-shaped cross-section steel ventilation effect of rotor ventilation steel channel is the best, and does not take into full account that channel-section steel changes the work of gas flowing
With, the present invention is optimized design to the cross section of the streamlined channel-section steel of I-shaped cross-section linear type channel-section steel and I-shaped cross-section.As
Shown in Fig. 4 and Fig. 6, for ensureing the intensity of the streamlined channel-section steel in I-shaped cross-section, to the channel-section steel height (L in Fig. 4 and Fig. 61), channel-section steel
Width (W in Fig. 61), channel-section steel web width (W in Fig. 63) and the high (L in Fig. 6 of channel-section steel listrium3) it is optimized design.Wherein, channel-section steel
Highly L1With rotor internal diameter R1, rotor diameter R2Relevant with axial length D, for: L1=D/840+ (R2-R1)/240～D/
700+(R2-R1)/200, channel cross-section width W1With channel-section steel height L1Relevant, for W1=1/2L1～1/3L1, channel-section steel web width W3With groove
Steel cross section width W1Relevant, for W3=1/2W1～1/3W1, channel-section steel listrium height L3With channel-section steel height L1Relevant, for L3=0.09L1~
0.11L1, in the present embodiment, rotor internal diameter is R1=1800mm, rotor diameter is R2=2842mm, rotor core (4)
Axial length D=3570mm, therefore L1=8.58mm～10.31mm, preferably 10mm, W1=3.34mm～5mm, preferably 4.11mm,
W3=1.67mm～2.02mm, preferably 1.82mm, L3=0.81mm～1.19mm, preferably 1mm.Channel-section steel listrium is near web side
Hypotenuse and web limit angle β are designed as 130 °～136 °, in this example preferably 135 °.I-shaped cross-section streamlined channel-section steel top view
As shown in Figure 4 b, wherein, the streamlined channel-section steel in I-shaped cross-section width W2With channel cross-section width W1Relevant, i.e. W2=1.84W1~
1.88W1, W herein2=7.56mm～7.73mm, preferably 7.63mm, segmental arc radius R3(for the radius of maximum deflection point), design with
Channel-section steel height L1Relevant, i.e. R3=4.3L1～4.6L1, i.e. R3=43mm～46mm, preferably 45mm.The streamlined groove in I-shaped cross-section
The straight length L of each segmental arc of steel2=1.95R3, i.e. 87.75mm.It is so designed that pectinid effect is the most obvious.Adjacent two segmental arc knots
Structure is 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).The streamlined channel-section steel in I-shaped cross-section described in the present embodiment is by 5 segmental arc groups
Become, its length L4=0.25R2-0.26R1～0.27R2-0.25R1, L herein4=242.50mm～317.34mm, preferably 275mm.
I-shaped cross-section linear type channel-section steel length L5=0.10R2-0.11R1～0.13R2-0.12R1, L herein5=86.2mm～
153.46mm, preferably 110mm.Two channel-section steels being positioned in two segmented rotor iron cores between respective rotor tooth are respectively one
The streamlined channel-section steel in above-mentioned I-shaped cross-section and an above-mentioned I-shaped cross-section linear type channel-section steel.Two channel-section steels distance edge unshakable in one's determination away from
From (W in Fig. 94) and tooth width L6Relevant, i.e. W4=L6/10.At channel-section steel distal shaft end, I-shaped cross-section linear type channel-section steel distance is
Near rotor tooth Edge Distance L7=4L6/ 19～6L6/ 19, direction radially extends to axle.Groove streamlined for I-shaped cross-section
Steel, at channel-section steel distal shaft end, closest rotor tooth Edge Distance L8With facewidth L6Relevant, i.e. L8=L6/ 8～L6/4.I-shaped
Minimum range between gross section streamlines type channel-section steel and I-shaped cross-section linear type channel-section steel is L9=L6/3-19R3/100+W2/4.This
In example, facewidth L6=40mm, R3=45mm, W2=4mm, i.e. L7=8.42mm～12.63mm, preferably 10.53mm, L8=
5.00mm～10.00mm, preferably 7.50mm, L9=5.75mm.On the whole, the streamlined channel-section steel in I-shaped cross-section and I-shaped cross-section
Linear type channel-section steel is circumferentially in regularity distribution, and the channel-section steel that adjacent three rotor tooths are corresponding is one group, the groove of any one group
Steel (I, II, III in Fig. 8) mounting means is followed successively by " I-shaped cross-section linear type channel-section steel ", " I-shaped cross-section in the direction of the clock
Streamlined channel-section steel ", " I-shaped cross-section linear type channel-section steel ", " the streamlined channel-section steel in I-shaped cross-section ", " the streamlined groove in I-shaped cross-section
Steel ", " I-shaped cross-section linear type channel-section steel ", whole for motor rotor tooths are divided into counterclockwise the most misaligned some
Group, the rule of each group is identical.When ventilation steel channel is designed to described I-shaped cross-section streamline section structure, entrance can be made to lead to
Flow direction and the speed of the fluid of wind ditch have significant change, can be effectively improved mobile performance, due to the bending of streamlined channel-section steel,
The difference of rotor direction of rotation can affect the flow velocity in cooling medium flow ventilation ditch and flow, is arranged such, when motor up time
When pin rotates, air quantity maximum can improve 16%～23%.
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. there is the motor rotor ventilation structure of I-shaped cross-section 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=D/184～D/210.Adjacent rotor leaves certain sky between (4) unshakable in one's determination
Gap, forms Radial ventilation duct (1), the axial width L of Radial ventilation duct (1) and rotor internal diameter R1, rotor diameter R2Axially
Length D is relevant, i.e. L=D/840+ (R2-R1)/240～D/700+ (R2-R1)/200.Turning of adjacent segmented rotor (4) unshakable in one's determination
Sub-tooth (2) one_to_one corresponding in the axial direction, channel-section steel (5) is positioned in Radial ventilation duct (1) and circumferentially, and is arranged on adjacent point
Between the rotor tooth (2) of section rotor core (4), between each rotor tooth (2) of adjacent sectional rotor core (4), it is placed with two
Channel-section steel (5), rotor core (4) is slotted at rotating shaft, forms axial ventilation road (3), provides path for cooling medium flowing, its
In, axial ventilation road (3) Cross section Design is circular, diameter of phi and rotor internal diameter R1, rotor diameter R2Relevant, i.e. Φ=
0.15(R2-R1)～0.18 (R2-R1), axial ventilation road (3) are from rotating shaft radial direction the most nearby and between rotor core (4) inner circle
Angle α=18 ° of distance W=1/2 Φ, adjacent two axial ventilation road (3) central points and rotor core (4) initial point line.Described
Two channel-section steels (5) are divided into two kinds of specifications, one to be the streamlined channel-section steel in I-shaped cross-section, and another kind is I-shaped cross-section linear type groove
Steel, channel-section steel height L1With rotor internal diameter R1, rotor diameter R2Relevant with axial length D, for: L1=D/840+ (R2-R1)/
240～D/700+ (R2-R1)/200, channel cross-section width W1With channel-section steel height L1Relevant, for W1=1/2L1～1/3L1, channel-section steel web
Wide W3With channel cross-section width W1Relevant, for W3=1/2W1～1/3W1, channel-section steel listrium height L3With channel-section steel height L1Relevant, for L3=
0.09L1～0.11L1, the channel-section steel listrium hypotenuse near web side and web limit angle β be designed as 130 °～136 °, I-shaped section
Surface current line style channel-section steel width W2With channel cross-section width W1Relevant, for W2=1.84W1～1.88W1, the streamlined groove in I-shaped cross-section
The segmental arc radius R of steel3With channel-section steel height L1Relevant, i.e. R3=4.3L1～4.6L1, the I-shaped cross-section each segmental arc of streamlined channel-section steel
Straight length L2=1.95R3。
The motor rotor ventilation structure with I-shaped cross-section channel-section steel the most according to claim 1, it is characterised in that: described
The streamlined channel-section steel in I-shaped cross-section is made up of 5 segmental arcs, its length L4=0.25R2-0.26R1～0.27R2-0.25R1, I-shaped
Cross section linear type channel-section steel length L5=0.10R2-0.11R1～0.13R2-0.12R1, it is positioned in two segmented rotor iron cores correspondence
Two channel-section steels between rotor tooth are respectively a streamlined channel-section steel in above-mentioned I-shaped cross-section and an above-mentioned I-shaped cross-section is straight
Line style channel-section steel.Two channel-section steel distance Edge Distance W unshakable in one's determination4With tooth width L6Relevant, for W4=L6/10.At channel-section steel distal shaft end, directly
The rotor tooth Edge Distance L that line style channel-section steel is closest7=4L6/ 19～6L6/19.Channel-section steel streamlined for I-shaped cross-section,
Channel-section steel distal shaft end, closest rotor tooth Edge Distance L8With facewidth L6Relevant, for L8=L6/ 8～L6/4.I-shaped cross-section is flowed
Minimum range between line style channel-section steel and I-shaped cross-section linear type channel-section steel is L9=L6/3-19R3/100+W2/4.On the whole, work
The streamlined channel-section steel of shaped sections and I-shaped cross-section linear type channel-section steel circumferentially in regularity distribution, adjacent three rotor tooths pair
The channel-section steel answered is one group, and the channel-section steel mounting means of any one group is followed successively by " I-shaped cross-section linear type groove in the direction of the clock
Steel ", " the streamlined channel-section steel in I-shaped cross-section ", " I-shaped cross-section linear type channel-section steel ", " the streamlined channel-section steel in I-shaped cross-section ", " work
The streamlined channel-section steel of shaped sections ", " I-shaped cross-section linear type channel-section steel ".
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20161221 |