CN104821675B - A kind of non salient pole machine end magnetic shielding device that can improve cooling effect - Google Patents
A kind of non salient pole machine end magnetic shielding device that can improve cooling effect Download PDFInfo
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- CN104821675B CN104821675B CN201510211406.9A CN201510211406A CN104821675B CN 104821675 B CN104821675 B CN 104821675B CN 201510211406 A CN201510211406 A CN 201510211406A CN 104821675 B CN104821675 B CN 104821675B
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Abstract
The invention discloses a kind of non salient pole machine end magnetic shielding device that can improve cooling effect, it is related to machine field.The present invention is serious in order to solve the problems, such as the magnetic screen heating of existing non salient pole machine end.Excitation trim ring refers to upper end installed in pressure, magnetic screen is arranged on excitation trim ring upper end, pressing plate is arranged on magnetic screen upper end, fixing muscle and positioning bar be used for fixing pressure refer to, excitation trim ring, magnetic screen and pressing plate, positioning bar is arranged on the outer radius that pressure refers to, circumferential air duct is left between every piece of stepped magnetic screen in a circumferential direction, radial air openings are offered inside every piece of stepped magnetic screen, leaves radial ducts between every piece of stepped magnetic screen in the axial direction.Wind-guiding channel-section steel is arranged in the radial ducts between every piece of stepped magnetic screen, and is fixedly clamped by the stepped magnetic screen in both sides.The present invention is simple in construction, facilitates feasible, saves material, reduces cost, is advantageous to strengthen the cooling effect in non salient pole machine end regions.
Description
Technical field
The present invention relates to a kind of non salient pole machine end magnetic shielding device that can improve cooling effect, belong to machine field.
Background technology
As the capacity of large-scale non salient pole machine is constantly increasing, non salient pole machine end regions magnetic is close and the whirlpool of end construction part
Stream loss will increase therewith, and this will cause end construction part temperature rise substantially to increase, and cause end regions hot-spot, especially exist
During non salient pole machine leading phase operation, in end regions the temperature rise of the close and each structural member of magnetic sharply increase, highly impact non-salient pole electricity
The safety and reliability of machine operation.
Existing non salient pole machine end member magnetic screen is the monoblock circumference shielding construction made of stage shape metal plate, its
The eddy-current loss of end member magnetic screen is high, and ventilating and cooling effect is poor, and it is more serious to result in the heating of end member magnetic screen,
Development of the large-scale non salient pole machine to more Large Copacity is limited, it is necessary to be effectively reduced end using reasonably ventilation cooling structure
The temperature of component magnetic screen.
The content of the invention
It is hidden to solve it is an object of the invention to provide a kind of non salient pole machine end magnetic shielding device that can improve cooling effect
The problem of pole motor causes magnetic screen temperature too high because magnetic screen loss in end is high poor with ventilating and cooling effect, can be effective
Improve the cooling effect of end magnetic screen in ground.
A kind of non salient pole machine end magnetic shielding device that can improve cooling effect of the present invention, it refers to including pressure, excitation pressure
Circle, stepped magnetic screen, pressing plate, fixing muscle, positioning bar, circumferential air duct, radial air openings, radial ducts and wind guide tank
Steel.Excitation trim ring refers to upper end installed in pressure, and stepped magnetic screen is arranged on excitation trim ring upper end, and pressing plate is arranged on stepped magnetic cup
Cover upper end, fixing muscle and positioning bar are used for fixing that pressure refers to, excitation trim ring, stepped magnetic screen and pressing plate, positioning bar are arranged on pressure
The outer radius of finger, leaves circumferential air duct in a circumferential direction between every piece of stepped magnetic screen, in every piece of stepped magnetic screen
Portion offers radial air openings, leaves radial ducts between every piece of stepped magnetic screen in the axial direction.Wind-guiding channel-section steel is pacified
In radial ducts between every piece of stepped magnetic screen, and it is fixedly clamped by the stepped magnetic screen in both sides.
Described device includes the stepped magnetic screen of a blocks along the circumferential direction installed, and a span is 8 pieces to 16 pieces.
The width of circumferential air duct on circumferencial direction between every piece of stepped magnetic screen is 6 mm to 15 mm.Every piece of stepped magnetic cup
The inside covered offers radial air openings, and radial air openings are located in the ladder section of every piece of stepped magnetic screen, and through
Every piece of stepped magnetic screen.The quantity of radial air openings is b in each ladder section, and b span is 2 to 6.In axle
The width of radial ducts on to direction between every piece of stepped magnetic screen is 6 mm to 12 mm.Between stepped magnetic screen
The total number of radial ducts is 3 to 6, it is necessary to be determined according to the capacity of non salient pole machine.Every piece of stepped magnetic screen
Between wind-guiding channel-section steel quantity be 2 to 4.The material of described wind-guiding channel-section steel is any one of steel, alloy or aluminium.Wind-guiding
Channel-section steel serves the effect for reducing fluid vortex in radial ducts.
Preferably, the inner surface of described stepped magnetic screen is along the circumferential direction provided with zigzag radiating fin, increase
Cooling fluid and the contact area of stepped magnetic screen.
Preferably, the inner surface of described stepped magnetic screen along the circumferential direction equably open up it is fluted, increase it is cold
But fluid and the contact area of stepped magnetic screen.
Advantages of the present invention：Circumferential air duct, radial air openings are offered in the solid step shape magnet shielding structure of end
With the radial ducts with wind-guiding channel-section steel, on the basis of the original runnability of non salient pole machine is not changed, cooling stream is increased
Body and the contact area of the stepped magnetic screen in end, the speed of cooling fluid around the stepped magnetic screen in end is accelerated, is improved
Cooling fluid can significantly reduce non salient pole machine end to the cooling effect of the stepped magnetic screen in end in non salient pole machine
The temperature of stepped magnetic screen.The invention is easy for installation, simple in construction, has saved the material of magnetic screen and has reduced cost, can
To provide foundation for the design of the aeration structure of non salient pole machine.
Brief description of the drawings：
For ease of explanation, the present invention is described in detail by following specific implementations and accompanying drawing.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the M-M of the present invention to sectional view；
Fig. 3 is the N-N of the present invention to sectional view；
Fig. 4 is the structural representation inside stepped magnetic screen in the present invention.
In figure：1- pressures refer to；2- excitation trim rings；The stepped magnetic screens of 3-；4- pressing plates；5- fixing muscles；6- positioning bars；7- is circumferential
Air duct；8- radial air openings；9- radial ducts；10- wind-guiding channel-section steels.
Embodiment：
It is specific below by what is shown in accompanying drawing to make the object, technical solutions and advantages of the present invention of greater clarity
Embodiment describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit the model of the present invention
Enclose.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring the present invention's
Concept.
As shown in Figures 1 to 4, present embodiment uses following technical scheme：It including pressure refer to 1, excitation trim ring 2,
Stepped magnetic screen 3, pressing plate 4, fixing muscle 5, positioning bar 6, circumferential air duct 7, radial air openings 8, radial ducts 9 and wind-guiding
Channel-section steel 10.Excitation trim ring 2 refers to 1 upper end installed in pressure, and stepped magnetic screen 3 is arranged on the upper end of excitation trim ring 2, and pressing plate 4 is arranged on
The stepped upper end of magnetic screen 3, fixing muscle 5 and positioning bar 6 refer to 1, excitation trim ring 2, stepped magnetic screen 3 and pressing plate for fixing pressure
4, positioning bar 6 is arranged on the outer radius that pressure refers to 1, leaves circumferential air duct between every piece of stepped magnetic screen 3 in a circumferential direction
7, radial air openings 8 are offered inside every piece of stepped magnetic screen 3, are stayed in the axial direction between every piece of stepped magnetic screen 3
There is radial ducts 9.Wind-guiding channel-section steel 10 is arranged in the radial ducts 9 between every piece of stepped magnetic screen 3, and passes through both sides
Stepped magnetic screen 3 is fixedly clamped.
Described device includes the stepped magnetic screen 3 of a blocks along the circumferential direction installed, and a span is 8 pieces to 16 pieces,
The present embodiment is taken as 12 pieces.In a circumferential direction the width of the circumferential air duct 7 between every piece of stepped magnetic screen 3 be 6 mm extremely
15 mm, the present embodiment are taken as 10 mm.The inside of every piece of stepped magnetic screen 3 offers radial air openings 8, radial air openings 8
In the ladder section of every piece of stepped magnetic screen 3, and through every piece of stepped magnetic screen 3.In each ladder section radially
The quantity of air vent 8 is b, and b span is 2 to 6, and the present embodiment is taken as 2.Every piece of ladder in the axial direction
The width of radial ducts 9 between shape magnetic screen 3 be 6 mm to 12 mm, the present embodiment is taken as 8 mm.Stepped magnetic screen 3
Between radial ducts 9 total number for 3 to 6, it is necessary to be determined according to the capacity of non salient pole machine, the present embodiment is taken as
4.The quantity of wind-guiding channel-section steel 10 is 2 to 4 between every piece of stepped magnetic screen 3, and the present embodiment is taken as 2.Described leads
The material of wind groove steel 10 is any one of steel, alloy or aluminium, and the present embodiment selects Steel material.Wind-guiding channel-section steel 10, which serves, reduces footpath
The effect of fluid vortex into ventilating duct 9.
Further, the inner surface of described stepped magnetic screen 3 is along the circumferential direction provided with zigzag radiating fin, increase
Cooling fluid and the contact area of stepped magnetic screen 3.
Further, the inner surface of described stepped magnetic screen 3 along the circumferential direction equably opens up fluted, and increase is cold
But fluid and the contact area of stepped magnetic screen 3.
Specific cooling fluid is only flowed by original around the stepped surface of magnetic screen 3 in end, is changed into stepped
Flowed and from the circumferential air duct 7 inside stepped magnetic screen 3, radial air openings 8 and with wind-guiding around the surface of magnetic screen 3
Flowed in the radial ducts 9 of channel-section steel 10, increase the contact area of cooling fluid and stepped magnetic screen 3, accelerate ladder
The speed of cooling fluid around shape magnetic screen, cooling effect of the cooling fluid to the stepped magnetic screen in end 3 is effectively improved,
Significantly reduce the temperature of stepped magnetic screen 3, it is ensured that the safe and stable operation of non salient pole machine.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
- A kind of 1. non salient pole machine end magnetic shielding device for improving cooling effect, it is characterised in that：It refers to (1), excitation including pressure Trim ring (2), stepped magnetic screen (3), pressing plate (4), fixing muscle (5), positioning bar (6), circumferential air duct (7), radial air openings (8), radial ducts (9) and wind-guiding channel-section steel (10), excitation trim ring (2) refer to (1) upper end, stepped magnetic screen (3) installed in pressure Installed in excitation trim ring (2) upper end, pressing plate (4) is arranged on stepped magnetic screen (3) upper end, and fixing muscle (5) and positioning bar (6) are used Refer to (1), excitation trim ring (2), stepped magnetic screen (3) and pressing plate (4) to fix pressure, positioning bar (6) is arranged on pressure and refers to the outer of (1) At footpath, circumferential air duct (7), every piece of stepped magnetic screen (3) are left between every piece of stepped magnetic screen (3) in a circumferential direction Inside offers radial air openings (8), leaves radial ducts (9) between every piece of stepped magnetic screen (3) in the axial direction, Wind-guiding channel-section steel (10) is arranged in the radial ducts (9) between every piece of stepped magnetic screen (3), and passes through the stepped magnetic in both sides Shielding (3) is fixedly clamped；Described device includes the stepped magnetic screen of a blocks (3) along the circumferential direction installed, and a span is 8 - 16 pieces of block；The width of the circumferential air duct (7) between every piece of stepped magnetic screen (3) is 6mm-15mm in a circumferential direction；Often The inside of the stepped magnetic screen of block (3) offers radial air openings (8), and radial air openings (8) are located at every piece of stepped magnetic screen (3) in ladder section, and through every piece of stepped magnetic screen (3)；The quantity of radial air openings (8) is in each ladder section B, b span is 2-6；Radial ducts (9) between every piece of stepped magnetic screen (3) in the axial direction Width is 6mm-12mm；The total number of radial ducts (9) is 3-6, it is necessary to according to hidden between stepped magnetic screen (3) The capacity of pole motor determines；The quantity of wind-guiding channel-section steel is 2-4 between every piece of stepped magnetic screen (3)；Described wind-guiding The material of channel-section steel (10) is any one of alloy or aluminium.
- A kind of 2. non salient pole machine end magnetic shielding device for improving cooling effect according to claim 1, it is characterised in that： The inner surface of described stepped magnetic screen (3) is along the circumferential direction provided with zigzag radiating fin.
- A kind of 3. non salient pole machine end magnetic shielding device for improving cooling effect according to claim 1, it is characterised in that： The inner surface of described stepped magnetic screen (3) along the circumferential direction equably opens up fluted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211406.9A CN104821675B (en) | 2015-04-29 | 2015-04-29 | A kind of non salient pole machine end magnetic shielding device that can improve cooling effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510211406.9A CN104821675B (en) | 2015-04-29 | 2015-04-29 | A kind of non salient pole machine end magnetic shielding device that can improve cooling effect |
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| CN104821675A CN104821675A (en) | 2015-08-05 |
| CN104821675B true CN104821675B (en) | 2018-01-05 |
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| CN105720745B (en) * | 2016-04-11 | 2018-04-03 | 哈尔滨理工大学 | A kind of turbine generator stator end magnetic conduction construction |
| CN105939070B (en) * | 2016-05-11 | 2018-03-09 | 哈尔滨理工大学 | A kind of air-draft-type stator of steam turbine generator for being beneficial to radiating |
| CN113014038B (en) * | 2021-03-11 | 2022-11-22 | 哈尔滨理工大学 | Novel two-side multistage counter-flow type axial-radial ventilation cooling system of half-speed steam turbine generator |
| CN113346678B (en) * | 2021-06-09 | 2022-06-07 | 哈尔滨理工大学 | Hybrid excitation turbogenerator with multistage axial flow-centrifugal ventilation cooling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10109105C2 (en) * | 2001-02-24 | 2003-01-09 | Mfh Hyperthermiesysteme Gmbh | Magnetic coil arrangement of a magnetic field applicator for heating magnetic or magnetizable substances or solids in biological tissue |
| CN102064635B (en) * | 2011-01-12 | 2012-06-06 | 哈尔滨理工大学 | Steam turbine generator provided with axial-radial ventilating and cooling system |
| CN202309390U (en) * | 2011-10-31 | 2012-07-04 | 上海电气电站设备有限公司 | Magnetic shielding structure of million-class nuclear power turbogenerator stator end |
| CN103078436B (en) * | 2013-01-28 | 2014-10-29 | 哈尔滨理工大学 | Split piano type shielding device on end part of steam-turbine generator |
| CN103151858A (en) * | 2013-03-25 | 2013-06-12 | 哈尔滨电机厂有限责任公司 | Large-scale nuclear power half-speed steam turbine power generator |
| CN204559273U (en) * | 2015-04-29 | 2015-08-12 | 哈尔滨理工大学 | A kind of non salient pole machine end magnetic shielding device that can improve cooling effect |
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Inventor after: Han Jichao Inventor after: Jiang Jingang Inventor after: Zheng Ping Inventor after: Sun Yutian Inventor after: Wang Lei Inventor after: Ge Baojun Inventor after: Sui Yi Inventor after: Bai Jingang Inventor before: Han Jichao Inventor before: Jiang Jingang Inventor before: Li Weili Inventor before: Ge Baojun Inventor before: Tao Dajun |
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