CN107070020A - The stator aeration structure being distributed many channel-section steels more - Google Patents
The stator aeration structure being distributed many channel-section steels more Download PDFInfo
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- CN107070020A CN107070020A CN201610777165.9A CN201610777165A CN107070020A CN 107070020 A CN107070020 A CN 107070020A CN 201610777165 A CN201610777165 A CN 201610777165A CN 107070020 A CN107070020 A CN 107070020A
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary 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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Abstract
The invention discloses the stator aeration structure being distributed many channel-section steels more, mainly include sectionalized stator unshakable in one's determination, Radial ventilation duct and ventilation steel channel, wherein sectionalized stator iron core is axially distributed, it is Radial ventilation duct between adjacent sectionalized stator is unshakable in one's determination, it is formed by circumferential ventilation steel channel, stator core includes stator tooth and stator slot, adjacent sectionalized stator stator tooth unshakable in one's determination and stator slot are corresponded in the axial direction, winding is placed with stator slot, ventilation steel channel is arranged between the stator tooth of adjacent sectional stator core.A square-section linear pattern channel-section steel is placed between each stator tooth of the adjacent sectional stator core, a piece streamlined channel-section steel in square-section and a streamlined channel-section steel in I-shaped cross-section, structure of the present invention can effectively reduce windmill in ventilating duct and be lost, solve existing motor stator radiating effect poor, the problem of stator coil afterbody local temperature rise is too high.
Description
Technical field
The present invention relates to the stator aeration structure being distributed a kind of many channel-section steels more, and in particular to a kind of motor stator radial ventilation
System, belongs to motor ventilation technical field.
Background technology
For the large-size machine using radial ventilation system, the loss of motor stator portion is main cold by Radial ventilation duct
But air flow outwards radiates.But, when cooling gas is by Radial ventilation duct, because wind path section narrows suddenly, flow velocity
Become big；When cooling gas flows out from stator bar afterbody, due to the gas of the gas and stator bar afterbody of stator bar both sides
Rate of flow of fluid differs greatly, and causes stator coil afterbody formation vortex, and vortex middle part wind speed is minimum, has a strong impact on stator coil
The radiating of afterbody.If the aeration structure design of motor is unreasonable, causes motor local temperature rise too high or uneven, have a strong impact on
The service life of motor.
In motor radial ventilation system, ventilation steel channel typically uses linear pattern, V-type and many replicated structures.Chinese patent
Number for the linear pattern stator ventilation steel channel described in 201220141957.4, although simple in construction, but stator footpath can not be changed
To air duct interior air-flow direction, stator coil afterbody eddy-current loss is big；China Patent No. is the V-type described in 201520770017.5
Stator ventilation steel channel, although can change stator wind path flow direction, but exist wind path flow to unbalanced, stator bulk temperature compared with
It is high；The ventilation steel channel of many replicated structures described in China Patent No. 201410835452.1, due to its replicated structures, its structure is not
Smooth, cooling gas windmill loss in air duct is larger, and radiating effect is not good.In addition, either linear pattern channel-section steel, V-groove
The ventilation steel channel of steel or many replicated structures, section is square, and square ventilation steel channel mechanical performance is poor, and in air duct
Windmill loss is larger, is unfavorable for stationary part ventilation and heat.
The content of the invention
The technology of the present invention solves problem：Overcome the deficiencies in the prior art to change wind path there is provided one kind to flow to, again
The stator ventilation steel channel of windmill loss can be reduced.
The present invention technical solution be：The stator aeration structure being distributed many channel-section steels, mainly includes sectionalized stator iron more
The heart (1), Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator iron core (1) are axially distributed, and its hop count n is by stator
The external diameter of unshakable in one's determination (1) is determined, is n=D/55~D/50, and D is electric machine stator iron external diameter, adjacent sectionalized stator (1) unshakable in one's determination it
Between be Radial ventilation duct (2), it is formed by circumferential ventilation steel channel (3), the axial width L of Radial ventilation duct (2)dWith
Electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator
Unshakable in one's determination (1) includes stator tooth (4) and stator slot (5), and the stator tooth (4) and stator slot (5) of adjacent sectionalized stator iron core (1) exist
Corresponded on axial direction, winding is placed with stator slot (5), ventilation steel channel (3) is arranged on determining for adjacent sectional stator core (1)
Between sub- tooth (4).Three channel-section steels are placed between each stator tooth of the adjacent sectional stator core (1), i.e., one rectangle is cut
Face linear pattern channel-section steel, a streamlined channel-section steel in square-section and a streamlined channel-section steel in I-shaped cross-section, wherein square-section are straight
Line style channel-section steel width is L1, L1With stator facewidth btIt is relevant, there is following relation：L1=bt/ 5~bt/ 3, square-section linear pattern
Channel cross-section width is L2, L2With channel-section steel width L1It is relevant, L2=L1, section thickness L3, its size and air duct axial width Ld
It is relevant, there is following relation：L3=Ld, the streamlined channel cross-section width in square-section is L4, L4With stator facewidth btIt is relevant, exist
Following relation：L4=bt/ 5~3bt/ 7, the streamlined channel cross-section thickness in square-section is L5, itself and air duct axial width LdHave
Close, there is following relation：L5=Ld, the streamlined channel-section steel width L in square-section6, L6With the streamlined channel cross-section width in square-section
L4It is relevant, L6=L4, square-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd the high h of stator toothsHave
Close, i.e. r=bt/ 6~bt/ 3,Wherein deflection distance r is that the streamlined channel-section steel in square-section is maximum
Radial distance between bending point and two neighboring bending midpoint, angle of bend θ is that midpoint is cut between two neighboring bending
Angle between line and two neighboring bending midpoint line.The streamlined wide L of channel-section steel sole in I-shaped cross-section7, its size with
Stator facewidth btIt is relevant, L7=1bt/ 7~3bt/ 8, the streamlined channel-section steel sole thickness L in I-shaped cross-section10With air duct axial width
LdIt is relevant, it is L10=Ld/ 10~Ld/ 7, the streamlined wide L of channel-section steel web in I-shaped cross-section9, its size and the wide L of channel-section steel sole7Have
Close, be L9=L7/ 3~L7/ 2, the streamlined channel cross-section thickness in I-shaped cross-section is L8, its size and air duct axial width LdHave
Close, i.e. L8=Ld, I-shaped angle beta and the streamlined wide L of channel-section steel sole in I-shaped cross-section7And the streamlined channel-section steel in I-shaped cross-section is thick
Spend L8It is relevant, beWherein I-shaped angle beta is that the streamlined channel-section steel in I-shaped cross-section is I-shaped
Angle between section horizontal edge and hypotenuse.The streamlined channel-section steel width in I-shaped cross-section is L11, L11With I-shaped cross-section streamline type groove
The wide L of steel sole7It is relevant, L11=L7, I-shaped cross-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd it is fixed
The sub- high h of toothsIt is relevant, i.e. r=bt/ 6~bt/ 3,Wherein deflection distance r flows for I-shaped cross-section
Radial distance between line style channel-section steel maximum deflection point and two neighboring bending midpoint, angle of bend θ is two neighboring bending
Between midpoint tangent line and two neighboring bending midpoint line between angle.
Three channel-section steels of long, medium and short are placed between each stator tooth (4) of the adjacent sectional stator core (1), wherein long
Channel-section steel is the streamlined channel-section steel in I-shaped cross-section, is made up of six bendings, and middle channel-section steel is square-section linear pattern channel-section steel, and short channel-section steel is
The streamlined channel-section steel in square-section, is made up of five bendings, and each channel-section steel straight length and electric machine stator iron outer diameter D and stator tooth are high
hsIt is relevant, i.e., long channel-section steel straight length Ls1=0.13 (D-2hs(the D-2h of)~0.18s), middle channel-section steel straight length Ls2=0.1 (D-
2hs(the D-2h of)~0.15s), short channel-section steel straight length Ls3=0.09 (D-2hs(the D-2h of)~0.11s), in channel-section steel proximal ends, three
Channel-section steel distance Edge Distance unshakable in one's determination is ht1, length is 7mm~10mm, middle channel-section steel and long channel-section steel ultimate range and most-small distance
Respectively it is ht2And ht3, ht2And ht3Size and the streamlined channel-section steel deflection distance r in I-shaped cross-section, square-section linear pattern channel-section steel
Width L1, the streamlined channel-section steel width L in square-section6And the streamlined channel-section steel width L in I-shaped cross-section11It is relevant, ht2=0.3L1+
r-0.2L6-0.02L11~0.8L1+r-0.4L6+0.02L11, ht3=0.5L1+0.8r-0.7L6-0.02L11~0.7L1-0.6r+
0.3L6+0.02L11, middle channel-section steel and short channel-section steel ultimate range and minimum range and middle channel-section steel and long channel-section steel ultimate range and most narrow spacing
From identical, long channel-section steel center and nearside tooth back gauge bt1With short channel-section steel center and nearside tooth back gauge bt4It is equal, its
Distance and stator facewidth btAnd the streamlined channel-section steel deflection distance r in I-shaped cross-section is relevant, i.e. bt1=bt4=0.15bt+ 0.3r~
0.18bt+ 0.4r, the middle long channel-section steel centre distance b of channel-section steel centre distancet2With the centre distance b apart from short channel-section steelt3It is equal, and should be away from
From with the streamlined channel-section steel width L in square-section6, stator facewidth btAnd the streamlined channel-section steel deflection distance r in I-shaped cross-section is relevant,
bt2=bt3=0.5bt-0.3L6-0.8r~0.5bt-0.55L6+ 0.2r, on the whole, channel-section steel is by period profile in whole radially logical
In wind ditch, using three teeth as a cycle, on three teeth in a cycle, the preferred mounting means of channel-section steel in the direction of the clock according to
It is secondary for " the streamlined long channel-section steel in I-shaped cross-section ", " channel-section steel in the linear pattern of square-section ", " the streamlined short channel-section steel in square-section ",
" the streamlined long channel-section steel in I-shaped cross-section ", " channel-section steel in the linear pattern of square-section ", " the streamlined short channel-section steel in square-section ", " rectangle
Gross section streamlines type short channel-section steel ", " channel-section steel in the linear pattern of square-section ", " the streamlined long channel-section steel in I-shaped cross-section ".
The advantage of the present invention compared with prior art is：Ventilating system of the present invention has compared with prior art
Following effect：The square-section channel-section steel invented is easy to process, but can not change the flow direction of cooling gas in ventilating duct,
By the way that square-section linear pattern channel-section steel, the streamlined channel-section steel of the streamlined channel-section steel in square-section and I-shaped cross-section are effectively combined, no
But effectively reduction coil afterbody eddy-current loss, and windmill loss is substantially reduced in air duct, in addition, by changing channel-section steel quantity
And length distribution, strengthen motor radiating effect, and motor radiating efficiency increase by 13% or so.
Brief description of the drawings
Fig. 1 is electric machine stator iron aeration structure schematic diagram；
Fig. 2 is motor stator Radial ventilation duct schematic enlarged-scale view；
Fig. 3 is square-section linear pattern channel-section steel overall structure diagram；
Fig. 4 is the streamlined channel-section steel overall structure diagram in square-section；
Fig. 5 is the streamlined channel-section steel left view in square-section；
Fig. 6 is the streamlined channel-section steel overall structure diagram in I-shaped cross-section；
Fig. 7 is the streamlined channel-section steel top view in I-shaped cross-section and left view, and wherein Fig. 7 a are I-shaped cross-section streamline type groove
Steel top view, Fig. 7 b are its left view；
Fig. 8 is that stator between cog installs the different channel-section steel partial enlarged drawings of three length；
Fig. 9 is part A enlarged drawing in Fig. 8.
Embodiment
The preferred embodiment of the present invention is elaborated below according to accompanying drawing.
The parameter of electric machine that the present embodiment is related to：Frame diameter D=1260mm, stator core axial length Lfe=
1340mm, stator facewidth bt=19.3mm, the high h of stator tooths=81.4mm.As shown in figure 1, being distributed many channel-section steels of the present invention more
Stator aeration structure, mainly include sectionalized stator unshakable in one's determination (1), Radial ventilation duct (2) and ventilation steel channel (3), wherein segmentation is fixed
Sub- iron core (1) is axially distributed, and its hop count n is determined by the external diameter of stator core (1), is n=D/55~D/50, and D is fixed for motor
It is Radial ventilation duct (2) between sub- iron core external diameter, adjacent sectionalized stator (1) unshakable in one's determination, it is by circumferential ventilation steel channel
(3) formed, the axial width L of Radial ventilation duct (2)dWith electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=
(0.1D+0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator core (1) includes stator tooth (4) and stator slot (5), adjacent
The stator tooth (4) and stator slot (5) of sectionalized stator iron core (1) are corresponded in the axial direction, and winding is placed with stator slot (5),
Ventilation steel channel (3) is arranged between the stator tooth (4) of adjacent sectional stator core (1), by optimization design, can obtain sectionalized stator
Hop count n=22.9~25.2 unshakable in one's determination, preferably 24, the axial length L of Radial ventilation ductd=9.6mm~11mm, preferably 10mm.
Existing motor stator ventilation steel channel structure is single, and windmill loss is big, and ventilation effect is not good, and do not take into full account groove
Guide functions of the steel to cooling gas.In order to more preferably improve ventilation effect, coil afterbody eddy-current loss, electricity of the present invention are reduced
Machine uses square-section linear pattern channel-section steel, the streamlined channel-section steel of the streamlined channel-section steel in square-section and I-shaped cross-section, and adjacent sectional
Placed between each stator tooth of stator core (1) in each unequal channel-section steel of three length, i.e., one square-section linear pattern
Channel-section steel, the streamlined long channel-section steel of a streamlined short channel-section steel in square-section and an I-shaped cross-section, its three-dimensional structure such as Fig. 2 institutes
Show.
Described square-section linear pattern channel-section steel (3) section uses rectangle, and linear form extends, as shown in Figure 3.Rectangle
Section linear pattern channel-section steel width is L1, L1With stator facewidth btIt is relevant, there is following relation：L1=bt/ 5~bt/ 3, i.e. L1=
3.86mm~6.43mm, preferably 4.06mm.Square-section linear pattern channel cross-section width is L2, L2With channel-section steel width L1It is relevant, L2
=L1, i.e. L2=4.06mm, section thickness L3, its size and air duct axial width LdIt is relevant, there is following relation：L3=Ld,
That is L3=10mm.
The streamlined channel-section steel overall structure in square-section is as shown in figure 4, the streamlined channel cross-section width in square-section is L4, L4
With stator facewidth btIt is relevant, there is following relation：L4=bt/ 5~3bt/ 7, i.e. L4=3.86mm~8.27mm, preferably 5.12mm.
The streamlined channel cross-section thickness in square-section is L5, equally, L5With air duct axial width LdIt is relevant, there is following relation：L5=
Ld, i.e. L5=10mm.In order to clearly describe the streamline construction of the streamlined channel-section steel in the square-section, it is research pair to take channel-section steel left view
As shown in figure 5, the wherein streamlined channel-section steel width L in square-section6, L6With the streamlined channel cross-section width L in square-section4Have
Close, L6=L4, i.e. L6=5.12mm.Square-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd it is fixed
The sub- high h of toothsIt is relevant, i.e. r=bt/ 6~bt/ 3,Then r=3.2mm~6.5mm, preferably 4mm, θ
=14.7 °~27.8 °, preferably 17 °, part shown in W represents a bending of channel-section steel in wherein Fig. 5, and deflection distance r is that rectangle is cut
Radial distance between surface current line style channel-section steel maximum deflection point and two neighboring bending midpoint, angle of bend θ is two neighboring curved
Angle between song between the tangent line of midpoint and two neighboring bending midpoint line, the design is reducing coil afterbody vortex damage
Maximum ventilation radiating effect is ensure that while consumption.
For the streamlined channel-section steel in I-shaped cross-section, as shown in fig. 6, the channel-section steel is complicated, in order to clearly describe the channel-section steel
Structure, it is analysis object to take the streamlined channel-section steel top view in I-shaped cross-section and left view, as shown in fig. 7, wherein Fig. 7 a are I-shaped
The streamlined channel-section steel top view of tee section, Fig. 7 b are the streamlined channel-section steel left view in I-shaped cross-section.The I-shaped cross-section is streamlined
Channel cross-section as shown in Figure 7a, the streamlined wide L of channel-section steel sole in I-shaped cross-section7, its size and stator facewidth btIt is relevant, L7=
1bt/ 7~3bt/ 8, i.e. L7=2.78mm~7.23mm, preferably 4.88mm, the streamlined channel-section steel sole thickness L in I-shaped cross-section10With
Air duct axial width LdIt is relevant, it is L10=Ld/ 10~Ld/ 7, i.e. L10=0.96mm~1.57mm, preferably 1.2mm, I-shaped
The streamlined wide L of channel-section steel web of tee section9, its size and the wide L of channel-section steel sole7It is relevant, it is L9=L7/ 3~L7/ 2, i.e. L9=2.57mm
~4.82mm, in order to ensure that the channel-section steel mechanical performance is optimal, L9Preferably 4mm, the streamlined channel cross-section thickness in I-shaped cross-section
For L8, its size and air duct axial width LdIt is relevant, i.e. L8=Ld, L8=10mm.I-shaped angle beta and I-shaped cross-section streamline
The wide L of type groove steel sole7And the streamlined channel-section steel thickness L in I-shaped cross-section8It is relevant, according to optimization design,Then β=22.28 °~53.57 °, are lost, β is preferably to reduce windmill in ventilating duct
36 °, wherein I-shaped angle beta is the angle between the streamlined channel-section steel I-shaped cross-section horizontal edge in I-shaped cross-section and hypotenuse.I-shaped
The streamlined channel-section steel of tee section (as shown in Fig. 7 b left views) width is L11, L11With the streamlined wide L of channel-section steel sole in I-shaped cross-section7Have
Close, L11=L7, i.e. L11=4.88mm.I-shaped cross-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd
The high h of stator toothsIt is relevant, i.e. r=bt/ 6~bt/ 3,Then r=3.2mm~6.5mm, preferably
4mm, θ=14.7 °~27.8 °, preferably 17 °, wherein deflection distance r is the streamlined channel-section steel maximum deflection point in I-shaped cross-section and phase
Radial distance between adjacent two bendings midpoint, angle of bend θ is the tangent line and adjacent two of midpoint between two neighboring bending
Angle between the line of individual bending midpoint, while the design ensures maximum ventilation radiating effect, windmill is lost most in ventilating duct
It is small.
In order to further improve the ventilation effect of stator, each stator of adjacent sectional stator core (1) of the present invention
Three channel-section steels of long, medium and short are placed between tooth (4), wherein long channel-section steel is the streamlined channel-section steel in I-shaped cross-section, by six bending groups
Into middle channel-section steel is square-section linear pattern channel-section steel, and short channel-section steel is the streamlined channel-section steel in square-section, is made up of five bendings, such as Fig. 8
It is shown, each channel-section steel straight length and electric machine stator iron outer diameter D and the high h of stator toothsIt is relevant, i.e., long channel-section steel straight length Ls1=
0.13(D-2hs(the D-2h of)~0.18s), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short channel-section steel straight line
Length Ls3=0.09 (D-2hs(the D-2h of)~0.11s), then Ls1=142.6mm~197.5mm, preferably 164mm, Ls2=109.8mm
~164.7mm, preferably 128mm, Ls3=98.7mm~120.7mm, preferably 106mm.Each channel-section steel is installed in air duct on each tooth,
Three channel-section steels are laid on each tooth, channel-section steel is integrally extended in a radial direction.Fig. 9 is the enlarged drawing of part A in Fig. 8, three channel-section steels
Represented respectively by a, b and c, wherein a represents the streamlined channel-section steel in I-shaped cross-section, b represents square-section linear pattern channel-section steel, and c is represented
The streamlined channel-section steel in square-section.In channel-section steel proximal ends, three channel-section steel distance Edge Distances unshakable in one's determination are ht1, length be 7mm~
10mm, preferably 8.5mm, it is h that centre position b channel-section steels are respectively with a channel-section steels ultimate range and minimum ranget2And ht3, ht2And ht3Greatly
Small and the streamlined channel-section steel deflection distance r in I-shaped cross-section, square-section linear pattern channel-section steel width L1, the streamlined channel-section steel in square-section
Width L6And the streamlined channel-section steel width L in I-shaped cross-section11It is relevant, pass through optimization design, ht2=0.3L1+r-0.2L6-
0.02L11~0.8L1+r-0.4L6+0.02L11, ht3=0.5L1+0.8r-0.7L6-0.02L11~0.7L1-0.6r+0.3L6+
0.02L11, i.e. ht2=4.09mm~5.3mm, preferably 5.04mm, ht3=1.74mm~2.08mm, preferably 1.84mm, b channel-section steels and c
Channel-section steel ultimate range and minimum range are identical with foregoing description, repeat no more.In addition, a channel-section steels center and nearside tooth back gauge
From (b in Fig. 9t1) with c channel-section steels center and nearside tooth back gauge (b in Fig. 9t4) equal, its distance and stator facewidth btAnd work
The streamlined channel-section steel deflection distance r of shaped sections is relevant, i.e. bt1=bt4=0.15bt+ 0.3r~0.18bt+ 0.4r, i.e. bt1=bt4
=4.1mm~5.07mm, preferably 4.56mm；B channel-section steel centre distance a channel-section steels centre distance (b in Fig. 9t2) and in c channel-section steels
Heart distance (b in Fig. 9t3) equal, and the distance and the streamlined channel-section steel width L in square-section6, stator facewidth btAnd I-shaped cross-section
Streamlined channel-section steel deflection distance r is relevant, bt2=bt3=0.5bt-0.3L6- 0.8r~0.5bt-0.55L6+ 0.2r, i.e. bt2=
bt3=4.91mm~7.63mm, preferably 5.19mm.On the whole, channel-section steel presses period profile in whole Radial ventilation duct, with three
Tooth is a cycle, on three teeth in a cycle, and the preferred mounting means of channel-section steel is followed successively by " 164mm works in the direction of the clock
The streamlined long channel-section steel of shaped sections ", " channel-section steel in the linear pattern of 128mm square-sections ", " the streamlined short groove in 106mm square-sections
Steel ", " the streamlined long channel-section steel in 164mm I-shaped cross-sections ", " channel-section steel in the linear pattern of 128mm square-sections ", " 106mm square-sections
Streamlined short channel-section steel ", " the streamlined short channel-section steel in 106mm square-sections ", " channel-section steel in the linear pattern of 128mm square-sections ", " 164mm
The streamlined long channel-section steel in I-shaped cross-section ", channel-section steel is distributed as shown in Figure 8 above.The design has very to cooling gas in ventilating duct
Good water conservancy diversion effect, and stator coil afterbody eddy-current loss is obviously reduced, motor radiating rate improves 15% or so.
The foregoing is only a specific embodiment of the invention, but the protection of the present invention is not limited thereto, this area skill
Art personnel are not in the case where 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. more than the stator aeration structure that is distributed channel-section steel more, it is characterised in that：Mainly include sectionalized stator (1) unshakable in one's determination, radial ventilation
Ditch (2) and ventilation steel channel (3), wherein sectionalized stator iron core (1) are axially distributed, and external diameters of its hop count n by stator core (1) is true
It is fixed, it is n=D/55~D/50, D is electric machine stator iron external diameter, is Radial ventilation duct between adjacent sectionalized stator (1) unshakable in one's determination
(2), it is formed by circumferential ventilation steel channel (3), the axial width L of Radial ventilation duct (2)dWith outside electric machine stator iron
Footpath D and axial length LfeIt is relevant, Ld=(0.1D+0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator core (1) includes stator
Tooth (4) and stator slot (5), the stator tooth (4) and stator slot (5) of adjacent sectionalized stator (1) unshakable in one's determination are corresponded in the axial direction,
Winding is placed with stator slot (5), ventilation steel channel (3) is arranged between the stator tooth (4) of adjacent sectional stator core (1).Institute
State three channel-section steels of placement, i.e., one square-section linear pattern channel-section steel, one between each stator tooth of adjacent sectional stator core (1)
The streamlined channel-section steel in root square-section and a streamlined channel-section steel in I-shaped cross-section, wherein square-section linear pattern channel-section steel width is
L1, L1With stator facewidth btIt is relevant, there is following relation：L1=bt/ 5~bt/ 3, square-section linear pattern channel cross-section width is
L2, L2With channel-section steel width L1It is relevant, L2=L1, section thickness L3, its size and air duct axial width LdIt is relevant, exist with ShiShimonoseki
System：L3=Ld, the streamlined channel cross-section width in square-section is L4, L4With stator facewidth btIt is relevant, there is following relation：L4=
bt/ 5~3bt/ 7, the streamlined channel cross-section thickness in square-section is L5, itself and air duct axial width LdIt is relevant, exist with ShiShimonoseki
System：L5=Ld, the streamlined channel-section steel width L in square-section6, L6With the streamlined channel cross-section width L in square-section4It is relevant, L6=L4,
Square-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd the high h of stator toothsIt is relevant, i.e. r=bt/ 6~
bt/ 3,Wherein deflection distance r be the streamlined channel-section steel maximum deflection point in square-section with it is adjacent
Two bending midpoints between radial distance, angle of bend θ be two neighboring bending between midpoint tangent line with it is two neighboring
Bend the angle between the line of midpoint.The streamlined wide L of channel-section steel sole in I-shaped cross-section7, its size and stator facewidth btHave
Close, L7=1bt/ 7~3bt/ 8, the streamlined channel-section steel sole thickness L in I-shaped cross-section10With air duct axial width LdIt is relevant, it is L10
=Ld/ 10~Ld/ 7, the streamlined wide L of channel-section steel web in I-shaped cross-section9, its size and the wide L of channel-section steel sole7It is relevant, it is L9=L7/3
~L7/ 2, the streamlined channel cross-section thickness in I-shaped cross-section is L8, its size and air duct axial width LdIt is relevant, i.e. L8=Ld,
I-shaped angle beta and the streamlined wide L of channel-section steel sole in I-shaped cross-section7And the streamlined channel-section steel thickness L in I-shaped cross-section8It is relevant, beWherein I-shaped angle beta be the streamlined channel-section steel I-shaped cross-section horizontal edge in I-shaped cross-section with
Angle between hypotenuse.The streamlined channel-section steel width in I-shaped cross-section is L11, L11With the streamlined wide L of channel-section steel sole in I-shaped cross-section7
It is relevant, L11=L7, I-shaped cross-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd the high h of stator toothsHave
Close, i.e. r=bt/ 6~bt/ 3,Wherein deflection distance r is the streamlined channel-section steel in I-shaped cross-section
Radial distance between maximum deflection point and two neighboring bending midpoint, angle of bend θ is midpoint between two neighboring bending
Tangent line and two neighboring bending midpoint line between angle.
2. the stator aeration structure being distributed many channel-section steels according to claim 1 more, it is characterised in that：The adjacent sectional is determined
Three channel-section steels of long, medium and short are placed between each stator tooth (4) of sub- iron core (1), wherein long channel-section steel is that I-shaped cross-section is streamlined
Channel-section steel, is made up of six bendings, and middle channel-section steel is square-section linear pattern channel-section steel, and short channel-section steel is the streamlined channel-section steel in square-section, by
Five bending compositions, each channel-section steel straight length and electric machine stator iron outer diameter D and the high h of stator toothsIt is relevant, i.e., long channel-section steel length
Spend Ls1=0.13 (D-2hs(the D-2h of)~0.18s), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short groove
Steel straight length Ls3=0.09 (D-2hs(the D-2h of)~0.11s), in channel-section steel proximal ends, three channel-section steel distance Edge Distances unshakable in one's determination
It is ht1, length is 7mm~10mm, and it is h that middle channel-section steel is respectively with long channel-section steel ultimate range and minimum ranget2And ht3, ht2With
ht3Size and the streamlined channel-section steel deflection distance r in I-shaped cross-section, square-section linear pattern channel-section steel width L1, square-section it is streamlined
Channel-section steel width L6And the streamlined channel-section steel width L in I-shaped cross-section11It is relevant, ht2=0.3L1+r-0.2L6-0.02L11~0.8L1+
r-0.4L6+0.02L11, ht3=0.5L1+0.8r-0.7L6-0.02L11~0.7L1-0.6r+0.3L6+0.02L11, middle channel-section steel with
Short channel-section steel ultimate range and minimum range are identical with long channel-section steel ultimate range and minimum range with middle channel-section steel, long channel-section steel center
With nearside tooth back gauge bt1With short channel-section steel center and nearside tooth back gauge bt4It is equal, its distance and stator facewidth btAnd I-shaped
The streamlined channel-section steel deflection distance r of tee section is relevant, i.e. bt1=bt4=0.15bt+ 0.3r~0.18bt+ 0.4r, middle channel-section steel centre-to-centre spacing
From long channel-section steel centre distance bt2With the centre distance b apart from short channel-section steelt3It is equal, and the distance and the streamlined channel-section steel in square-section
Width L6, stator facewidth btAnd the streamlined channel-section steel deflection distance r in I-shaped cross-section is relevant, bt2=bt3=0.5bt-0.3L6-
0.8r~0.5bt-0.55L6+ 0.2r, on the whole, channel-section steel press period profile in whole Radial ventilation duct, using three teeth as one
On cycle, three teeth in a cycle, the preferred mounting means of channel-section steel is followed successively by that " I-shaped cross-section is streamlined in the direction of the clock
Long channel-section steel ", " channel-section steel in the linear pattern of square-section ", " the streamlined short channel-section steel in square-section ", " the streamlined elongated slot in I-shaped cross-section
Steel ", " channel-section steel in the linear pattern of square-section ", " the streamlined short channel-section steel in square-section ", " the streamlined short channel-section steel in square-section ", " square
Channel-section steel in tee section linear pattern ", " the streamlined long channel-section steel in I-shaped cross-section ".
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11289957B2 (en) * | 2018-09-06 | 2022-03-29 | Xinjiang Goldwing Science & Technology Co., Ltd. | Generator and wind turbine |
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| 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 |
| 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 |
|---|---|---|---|---|
| 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 |
| 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 |
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| US11289957B2 (en) * | 2018-09-06 | 2022-03-29 | Xinjiang Goldwing Science & Technology Co., Ltd. | Generator and wind turbine |
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Application publication date: 20170818 |