CN110336400A - A kind of pump storage machines ventilation structure component and pump storage machines rotor - Google Patents
A kind of pump storage machines ventilation structure component and pump storage machines rotor Download PDFInfo
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- CN110336400A CN110336400A CN201910665358.9A CN201910665358A CN110336400A CN 110336400 A CN110336400 A CN 110336400A CN 201910665358 A CN201910665358 A CN 201910665358A CN 110336400 A CN110336400 A CN 110336400A
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- magnetic pole
- pole shoe
- pump storage
- storage machines
- groove
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of pump storage machines ventilation structure component and pump storage machines rotors, comprising: magnetic pole pole shoe and excitation winding, magnetic pole pole shoe tool are variable section structure there are two groove and two grooves, excitation winding；Groove is located on two side surfaces parallel with Damper Winding slot direction in magnetic pole pole shoe；Two grooves are located at two Damper Windings of the two sides of each magnetic pole pole shoe and the middle position of the Damper Winding adjacent with two Damper Windings；Variable cross-section excitation winding structure is that the straight length portion outer surface of excitation winding has certain tilt angle along short transverse, and the sectional area that variable cross-section excitation winding is contacted with upper pallet is minimum, and the sectional area contacted with lower pallet is maximum.This component can promote the heat dissipation effect of magnetic pole pole shoe, Damper Winding and excitation winding, ensure the safe operation of motor.
Description
Technical field
The present invention relates to salient pole machine rotor aeration technology and design and manufacturing technology field more particularly to a kind of water-storages
Motor rotor ventilation structure component and pump storage machines rotor.
Background technique
The rotor temperature rise of pump storage machines is smaller than the nargin of stator temperature rise, needs to turn using reduction motor in use process
The measure of sub- temperature rise.Important composition component of the Damper Winding as pump storage machines rotor, can inhibit motor-field to be mutated
And rotor oscillating, it plays a protective role to rotor field coil, improves the operation stability of motor；Meanwhile in water-storage
Under motor powered operating condition, Damper Winding is to provide starting torque under motor asynchronous starting mode.It is started in pump storage machines
When, due to flowing through biggish electric current in Damper Winding, Damper Winding bears biggish thermal stress.It is frequent in pump-storage generator
In shutdown process, be easy to cause there is Damper Winding broken strip, weld snaps and the most common failures such as position play, serious influence
The security and stability of motor parallel operation and power grid.Shadow of the magnetic pole pole shoe structure being in contact with Damper Winding by harmonic field
It rings, generates eddy-current loss on magnetic pole pole shoe surface, cause magnetic pole pole shoe surface temperature excessively high, further result in the temperature of Damper Winding
Degree rises.The main heating source excitation winding of pump storage machines rotor is cooled down by the air between adjacent pole, therefore
The flow process of inside air between adjacent pole plays crucial effect to the height of excitation winding temperature.
Therefore, it is necessary to the heat dissipation effects that one kind can effectively improve magnetic pole pole shoe, Damper Winding and excitation winding high-temperature area
Pump storage machines ventilation structure component.
Summary of the invention
The present invention provides a kind of pump storage machines ventilation structure component and pump storage machines rotors, it is intended to mention
The heat dissipation effect for having risen magnetic pole pole shoe, Damper Winding and excitation winding component ensures the safe operation of motor.
To achieve the goals above, this invention takes following technical solutions.
The present invention provides a kind of pump storage machines ventilation structure components, comprising: magnetic pole pole shoe and excitation winding,
It is characterized in that, there are two groove and two grooves for the magnetic pole pole shoe tool；
The groove is located on two side surfaces parallel with Damper Winding slot direction in magnetic pole pole shoe；
Two grooves are located at two Damper Windings of the two sides of each magnetic pole pole shoe and with described two
The middle position of the adjacent Damper Winding of a Damper Winding.
Preferably, excitation winding is variable section structure, the straight length portion outer surface edge of the variable cross-section excitation winding
Short transverse has certain tilt angle, and the sectional area that variable cross-section excitation winding is contacted with upper pallet is minimum, with lower pallet
The sectional area of contact is maximum.
Preferably, groove is circular arc type, and the arc length l of the circular arc and the magnetic pole pole shoe height meet H < l≤π H/2.
Preferably, the arc length l of circular arc is π H/2.
Preferably, groove includes hollow notch and groove core, the height of the hollow notch and magnetic pole pole shoe it is recessed
Groove top portion is equidistant to magnetic pole pole shoe surface, and the axial cross section shape of the hollow notch is inverted trapezoidal.
Preferably, the vertical range h of the groove top of magnetic pole pole shoe and magnetic pole pole shoe surface1(1) calculates according to the following formula
It arrives:
Wherein, f indicates frequency of oscillation 50Hz, μ of driving source0Magnetic conductivity, μ for vacuumrFor the relative magnetic permeability of magnetic pole pole shoe
Rate, γ are the conductivity of magnetic pole pole shoe.
Preferably, the axial length of groove and groove is equal with the axial length of motor pole.
Preferably, inclination angle alpha root of the straight length portion outer surface of the excitation winding of variable section structure along short transverse
It is calculated according to following formula (2):
α=arctan (2 π RnQ/S) (2)
Wherein, n is rotor revolving speed, R is rotor magnetic yoke radius, Q is blower total blast volume and S is that rotor rim is logical
The gross area of ducting outlet.
Preferably, the central axes of magnetic pole pole shoe and excitation winding along magnetic pole pole shoe direction are symmetrical.
Another aspect provides a kind of pump storage machines rotors, which is characterized in that turns including above-mentioned motor
Sub- aeration structure component.
The skill provided by the pump storage machines ventilation structure component and pump storage machines rotor of aforementioned present invention
Art scheme can be seen that the magnetic pole pole shoe recessing of the invention by electric machine structure and groove, in pump storage machines electricity
Under dynamic-two kinds of operating conditions of power generation, the heat dissipation performance of Damper Winding and magnetic pole pole shoe can be effectively improved, and then reduce Damper Winding
Thermal stress intensity；And by carrying out variable section structure design to excitation winding, make the straight length portion outer surface edge of excitation winding
Short transverse is in certain tilt angle, the mean speed vector of air and radial folder between the tilt angle and adjacent pole
Angle angle is equal, reduces energy loss when air flowing, promotes the heat-sinking capability of excitation winding.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of pump storage machines ventilation structure component diagram of the present embodiment；
Fig. 2 is a kind of sectional view of pump storage machines ventilation structure component of the present embodiment；
Fig. 3 is magnetic pole pole shoe structural schematic diagram；
Fig. 4 is excitation winding structural schematic diagram；
Fig. 5 is the structural schematic diagram of Damper Winding；
Fig. 6 is the pump storage machines rotor signal that the pump storage machines ventilation structure component of the present embodiment obtains
Figure；
Fig. 7 is motor rotor construction enlarged schematic partial view.
Description of symbols:
1 groove, 2 groove, 3 variable cross-section excitation winding, 4 magnetic pole pole shoe, 5 Damper Winding, 6 magnetic pole pole shoe surface, 7 pop-up
10 magnetic pole of tilt angle, 11 magnetic yoke, the 12 rotor rim ventilating duct of 8 lower pallet of plate, 9 excitation winding variable section structure
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
In order to facilitate understanding of embodiments of the present invention, further by taking specific embodiment as an example below in conjunction with attached drawing to be solved
Release explanation.
Fig. 1 is a kind of pump storage machines ventilation structure component diagram of the present embodiment, and Fig. 2 is the present embodiment
A kind of sectional view of pump storage machines ventilation structure component, referring to Figures 1 and 2, which includes: magnetic pole
Pole shoe 4 and variable cross-section excitation winding 3 (referring to Fig. 3 and Fig. 4), there are two groove 1 and two grooves 2 for the tool of magnetic pole pole shoe 4；Groove
1 is located on two side surfaces parallel with Damper Winding slot direction in magnetic pole pole shoe；For reducing magnetic pole pole shoe groove 1, hollow
Influence of the structure of slot 2 to Distribution of Magnetic Field in motor；Two grooves 2 are located at the Damper Winding of each magnetic pole pole shoe two sides
5 and the Damper Winding 5 adjacent with the Damper Winding 5 of magnetic pole pole shoe two sides middle position, wherein 6 Damper Windings 5 are circumferentially
It is evenly distributed in magnetic pole pole shoe 4.Fig. 5 is the structural schematic diagram of Damper Winding.
Variable cross-section excitation winding 3, upper pallet 7 and lower pallet 8 are wrapped on magnetic pole 10, and variable cross-section excitation winding 3
Between upper pallet 7 and lower pallet 8.Variable cross-section excitation winding 3 is the straight length portion outer surface of excitation winding along short transverse
In certain tilt angle, and the sectional area that variable cross-section excitation winding 3 is contacted with upper pallet 7 is minimum, and what is contacted with lower pallet 8 cuts
Area is maximum.
Groove 1 is circular arc type, and the arc length l of the circular arc and the magnetic pole pole shoe height H meet H < l≤π H/2.In order to make
The contact area of magnetic pole pole shoe two sides and cold air reaches maximum, and in view of notching construction is to the shadow of magnetic pole pole shoe mechanical stress
It rings, the circular arc arc length l of groove 1 is selected as π H/2.
Groove includes hollow notch and groove core, the groove top of the height of hollow notch and magnetic pole pole shoe to magnetic pole
Pole shoe surface is equidistant, and the axial cross section shape of hollow notch is inverted trapezoidal.
The groove top of magnetic pole pole shoe and the vertical range h on magnetic pole pole shoe surface 61(1) is calculated according to the following formula:
Wherein, f indicates frequency of oscillation 50Hz, μ of driving source0Magnetic conductivity, μ for vacuumrFor the relative magnetic permeability of magnetic pole pole shoe
Rate, γ are the conductivity of magnetic pole pole shoe.
The axial length of groove 1 and groove 2 is equal with the axial length of motor pole 10.
The groove 1 of magnetic pole pole shoe increases the heat dissipation area of magnetic pole pole shoe two sides, makes magnetic pole pole shoe two sides and cold air
Sufficient heat exchange is carried out, the heat dissipation effect of magnetic pole pole shoe two sides is improved.The groove of magnetic pole pole shoe two sides is equivalent to damping
The axial ventilation road of winding and magnetic pole pole shoe can effectively improve damping using the channel opening width and arc length for increasing groove
The heat dissipation effect of winding and magnetic pole pole shoe.
The straight length portion outer surface of the excitation winding of variable section structure along short transverse inclination angle alpha according to the following formula
(2) it is calculated:
α=arctan (2 π RnQ/S) (2)
Wherein, n is rotor revolving speed, R is rotor magnetic yoke radius, Q is blower total blast volume and S is that rotor rim is logical
The gross area of ducting outlet.
The mean speed vector and radial direction of air between the inclination angle alpha of variable cross-section excitation winding 3 and every adjacent pole 10
Included angle it is equal.
Magnetic pole pole shoe and excitation winding are symmetrical along the central axes of magnetic pole pole shoe.
Fig. 6 is the pump storage machines rotor signal that the pump storage machines ventilation structure component of the present embodiment obtains
Figure, Fig. 7 are motor rotor construction enlarged schematic partial view.Referring to figure 6 and figure 7, each ventilation assembly is connected by magnetic yoke 11.
Under two kinds of operating conditions of the electronic of pump storage machines and power generation, the temperature highest of magnetic pole pole shoe two sides, along magnetic
Temperature of the pole shoe circumferentially distributed Damper Winding in pole in magnetic pole pole shoe two sides reaches highest.Groove knot is used in magnetic pole pole shoe two sides
Structure increases the contact area of magnetic pole pole shoe and cold air, reduces the temperature of magnetic pole pole shoe and magnetic pole pole shoe surface；In magnetic pole
Pole shoe two sides use hollow slot structure, are equivalent to along the circumferentially distributed two sides Damper Winding of magnetic pole pole shoe and two sides Damper Winding phase
Axial ventilation road between adjacent Damper Winding, reduces the temperature of Damper Winding；The magnetic pole pole shoe when motor runs at high speed
Groove, hollow slot structure effectively improve magnetic pole pole shoe and the heat dissipation performance along the circumferentially distributed two sides Damper Winding of magnetic pole pole shoe,
Reduce its thermal stress.
Those skilled in the art will be understood that the application type of above-mentioned groove is only for example, other are existing or from now on may
The other structures of the groove of appearance are such as applicable to the embodiment of the present invention, should also be included within the scope of protection of the present invention, and
This is incorporated herein by reference.
In conclusion the embodiment of the present invention can change the flow path of cooling medium in pump storage machines rotor, increase
The contact area for having added cooling medium Yu rotor heat source makes cooling medium more effectively take away the heat of rotor heat source, improves
The heat dissipation effect of magnetic pole pole shoe, Damper Winding and excitation winding component ensures the safe operation of motor.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of pump storage machines ventilation structure component, comprising: magnetic pole pole shoe and excitation winding, which is characterized in that institute
There are two groove and two grooves for the magnetic pole pole shoe tool stated；
The groove is located on two side surfaces parallel with Damper Winding slot direction in magnetic pole pole shoe；
Two grooves are located at two Damper Windings of the two sides of each magnetic pole pole shoe and hinder with described two
The middle position of the adjacent Damper Winding of Buddhist nun's winding.
2. pump storage machines ventilation structure component according to claim 1, which is characterized in that the excitation around
Group is variable section structure, and the straight length portion outer surface of the variable cross-section excitation winding has certain inclination along short transverse
Angle, and the sectional area that variable cross-section excitation winding is contacted with upper pallet is minimum, the sectional area contacted with lower pallet is maximum.
3. pump storage machines ventilation structure component according to claim 1, which is characterized in that the groove is
Circular arc type, the arc length l of the circular arc and the magnetic pole pole shoe height meet H < l≤π H/2.
4. pump storage machines ventilation structure component according to claim 3, which is characterized in that the circular arc
Arc length l is π H/2.
5. pump storage machines ventilation structure component according to claim 1, which is characterized in that the groove
Including hollow notch and groove core, the groove top of the height of the hollow notch and magnetic pole pole shoe to magnetic pole pole shoe surface
It is equidistant, the axial cross section shape of the hollow notch is inverted trapezoidal.
6. pump storage machines ventilation structure component according to claim 5, which is characterized in that the magnetic pole pole
The groove top of boots and the vertical range h on magnetic pole pole shoe surface1(1) is calculated according to the following formula:
Wherein, f indicates frequency of oscillation 50Hz, μ of driving source0Magnetic conductivity, μ for vacuumrFor the relative permeability of magnetic pole pole shoe,
γ is the conductivity of magnetic pole pole shoe.
7. pump storage machines ventilation structure component according to claim 1, which is characterized in that the groove and
The axial length of groove and the axial length of motor pole are equal.
8. pump storage machines ventilation structure component according to claim 2, which is characterized in that the variable cross-section
The straight length portion outer surface of the excitation winding of structure is calculated according to the following formula (2) along the inclination angle alpha of short transverse:
α=arctan (2 π RnQ/S) (2)
Wherein, n is rotor revolving speed, R is rotor magnetic yoke radius, Q is blower total blast volume and S is rotor rim ventilating duct
The gross area of outlet.
9. pump storage machines ventilation structure component according to claim 1-7, which is characterized in that described
Central axes along magnetic pole pole shoe direction of magnetic pole pole shoe and excitation winding it is symmetrical.
10. a kind of pump storage machines rotor, which is characterized in that logical including the described in any item rotors of claim 1-9
Wind construction package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910665358.9A CN110336400B (en) | 2019-07-23 | 2019-07-23 | Pumped storage motor rotor ventilation structure subassembly and pumped storage motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910665358.9A CN110336400B (en) | 2019-07-23 | 2019-07-23 | Pumped storage motor rotor ventilation structure subassembly and pumped storage motor rotor |
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| Publication Number | Publication Date |
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| CN110336400A true CN110336400A (en) | 2019-10-15 |
| CN110336400B CN110336400B (en) | 2021-02-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001339883A (en) * | 2000-05-30 | 2001-12-07 | Hitachi Ltd | Rotor for salient-pole dynamo-electric machine |
| CN201430479Y (en) * | 2009-06-19 | 2010-03-24 | 泰豪科技股份有限公司 | Rotor punching sheet of single-pivot type electrical frequency-boosting generators |
| US20140265668A1 (en) * | 2011-10-06 | 2014-09-18 | Moteurs Leroy-Somer | Rotor comprising pole shoes with cooling channels |
| CN108599424A (en) * | 2018-06-13 | 2018-09-28 | 哈尔滨理工大学 | Pumped-storage power generation motor with multistage adding pressure type rotor step by step |
-
2019
- 2019-07-23 CN CN201910665358.9A patent/CN110336400B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001339883A (en) * | 2000-05-30 | 2001-12-07 | Hitachi Ltd | Rotor for salient-pole dynamo-electric machine |
| CN201430479Y (en) * | 2009-06-19 | 2010-03-24 | 泰豪科技股份有限公司 | Rotor punching sheet of single-pivot type electrical frequency-boosting generators |
| US20140265668A1 (en) * | 2011-10-06 | 2014-09-18 | Moteurs Leroy-Somer | Rotor comprising pole shoes with cooling channels |
| CN108599424A (en) * | 2018-06-13 | 2018-09-28 | 哈尔滨理工大学 | Pumped-storage power generation motor with multistage adding pressure type rotor step by step |
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| CN110336400B (en) | 2021-02-19 |
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