CN204425073U - A kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures - Google Patents
A kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures Download PDFInfo
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- CN204425073U CN204425073U CN201520125392.4U CN201520125392U CN204425073U CN 204425073 U CN204425073 U CN 204425073U CN 201520125392 U CN201520125392 U CN 201520125392U CN 204425073 U CN204425073 U CN 204425073U
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Abstract
The utility model relates to a kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures, comprise rotor main shaft, unshakable in one's determination, magnetic pole, winding, insulation, magnetic pole radiated rib, bracer, three bracers are arranged between described magnetic pole, nut is comprised above described bracer, screw, backing plate, described screw to go deep in the counterbore in bracer supported underneath plate and runs through, described bracer passes through screw, nut is fixed in rotating shaft, described bracer axial length L 1 is identical with the axial length L 2 of supporting bracket corresponding below bracer, the quantity of described bracer is 3 bracers, bracer structure is identical, center bracer is arranged in rotor axial Central Symmetry face place, end bracer center to center bracer plane of symmetry centre-to-centre spacing is L3, for 1/2 of rotor straight section length L4, cooling-air is by magnetic supporting wedge lower air ventilating and cooling space, three parts are divided into begin to cool down circulation, motor is made to reach better cooling effect, guarantee motor safety stable operation.
Description
Technical field
the utility model relates to a kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures.
Background technology
along with China's economic strength constantly strengthens, China industry and people's lives electricity needs is increased day by day, force the single-machine capacity of motor to increase, with meet China industry and people's lives to the demand of electric power.Single-machine capacity increases, electromagnetic load and heat load also increase, the temperature rise of unit is caused relatively to raise, directly affects the performance of motor, economic index and fail safe, so to the appropriate design of motor ventilation cooling structure and select desirable cooling channel mode particularly important, it is also the key of the performance promoting large-size machine.
the loss that motor internal produces will to adjacent materials transmission after being converted into heat, and wherein part is taken away by cooling-air, and part is distributed to surrounding medium by casing outer surface.Motor in the course of the work, temperature rise is too high, can reduce the useful life of motor, motor run fail safe and economy, and hydraulic performance decline and the insulation damages of material can be caused, cause electric discharge and the short circuit of motor internal, affect the safe and reliable operation of motor device, time serious, whole equipment can be burnt, motor safety is run and causes very big potential safety hazard and great economic loss.
salient-pole synchronous motor have firm in structure, control flexibly, the advantage such as low cost of manufacture, be widely used in the driving of the high-power machinery equipment such as the elevator in compressor, water pump, air blast, metal and coal industry and miniature original paper and control appliance field.At present, the technical barrier run in air cooling synchronous motor maximization process is the ventilating and cooling problem under labyrinth, takes rational ventilating and cooling mode, is the key ensureing useful life of motor, economy and fail safe.The rotor structure of salient-pole motor has its particularity, and the heat that rotor coil produces spreads out of mainly through external cooling fin, magnetic pole surfaces heat convection mode, arranges bracer between magnetic pole, and bracer is fixed in rotating shaft by the supporting bracket of screw through its underpart.For the salient-pole synchronous motor that capacity is little, utilize fin, magnetic pole surfaces and pole shoe surface can reach good heat radiating requirement; But for Large Copacity salient-pole synchronous motor, by above-mentioned radiating mode, the temperature rise of magnetic pole bottom is higher, can not ensure the long-term security of this motor, need to develop the new cooling blast structure of such motor.So development salient-pole motor magnetic supporting wedge leg space ventilation cooling structure has important practical significance and good application prospect.
Summary of the invention
the purpose of this utility model is to provide a kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures, to realize good cooling effect of motor, reach the design of economic, safe salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structure.
the purpose of this utility model is achieved in that
the utility model relates to a kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures, its composition comprises: rotor main shaft (1), (2), magnetic pole (3) unshakable in one's determination, winding (4), insulation (5), magnetic pole radiated rib (6), bracer (7), arrange three bracers between described magnetic pole, above described bracer, comprise nut (8), screw (9), backing plate (10).
described screw to go deep in the counterbore in bracer supported underneath plate (11) and runs through, and described bracer is fixed to the upper (see figure 1) of rotating shaft (1) by screw, nut.The identical (see figure 2) of axial length L 2 of described bracer axial length L 1 and supporting bracket corresponding below bracer; The quantity of described bracer is 3 bracers, bracer structure is identical, center bracer is arranged in rotor axial Central Symmetry face place, and it is symmetrical about median plane, end bracer center to center bracer plane of symmetry centre-to-centre spacing is L3, for the 1/2(of rotor straight section length L4 is shown in Fig. 3), air draught cooling duct is formed at magnetic supporting wedge bottom, and described structure contributes to strengthening rotor section and rotates air draught.After air is sucked motor by fan, three parts are divided into begin to cool down circulation, a part enters stator end, a part enters in the air gap between rotor, and directly enter in stator ventilation ducts, remainder enters in rotor magnetic pole gap, flow while absorb the heat of each parts surface of magnetic pole in heat convection mode vertically, the air arriving bracer surface is divided into two parts again, a part is streamed bracer surface while rotating with rotor high-speed and is upwards got rid of into air gap, directly enter stator wind ditch or continue to flow vertically, another part is through bracer lower support plate, flow forward vertically, wash away the winding at the magnetic pole root position place near rotating shaft, fin surface, flowed out by the magnetic pole gap between bracer, reach better cooling effect, guarantee motor safety stable operation (see figure 4).
beneficial effect:
starting point of the present utility model is for effectively solving the higher problem of high-capacity and high-speed salient-pole synchronous motor rotor temperature rise, after air is sucked motor by fan, by magnetic supporting wedge lower air ventilating and cooling space, three parts are divided into begin to cool down circulation, a part enters stator end, a part enters in the air gap between rotor, and directly enter in stator ventilation ducts, remainder enters in rotor magnetic pole gap, flow while absorb the heat of each parts surface of magnetic pole in heat convection mode vertically, the air arriving bracer surface is divided into two parts again, a part is streamed bracer surface while rotating with rotor high-speed and is upwards got rid of into air gap, directly enter stator wind ditch or continue to flow vertically, another part is through bracer lower support plate, flow forward vertically, wash away the winding at the magnetic pole root position place near rotating shaft, fin surface, flowed out by the magnetic pole gap between bracer, reach better cooling effect, guarantee motor safety stable operation.
accompanying drawing illustrates:
accompanying drawing 1 is that salient pole synchronous motor rotor assembles 1/4 sectional view.
accompanying drawing 2 is salient pole synchronous motor rotor supporting bracket axially 1/2 plane graphs.
accompanying drawing 3 is salient-pole synchronous motor axially 1/2 profiles.
accompanying drawing 4 is the three-dimensional ventilation diagrams in salient-pole motor supporting wedge bottom.
embodiment:
embodiment 1:
a kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures, its composition comprises: rotor main shaft, iron core, magnetic pole, winding, insulation, magnetic pole radiated rib, bracer, arrange three bracers between described magnetic pole, above described bracer, comprise nut, screw, backing plate.Described screw to go deep in the counterbore in bracer supported underneath plate and runs through, and described bracer is fixed in rotating shaft by screw, nut.
embodiment 2:
one four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structure described in embodiment 1, described bracer axial length L 1 is identical with the axial length L 2 of supporting bracket corresponding below bracer, the quantity of described bracer is 3 bracers, bracer structure is identical, center bracer is arranged in rotor axial Central Symmetry face place, and it is symmetrical about median plane, end bracer center to center bracer plane of symmetry centre-to-centre spacing is L3, for 1/2 of rotor straight section length L4, air draught cooling space is formed at magnetic supporting wedge bottom, described structure contributes to strengthening rotor section and rotates air draught.
Claims (1)
1. a pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structure, its composition comprises: rotor main shaft, unshakable in one's determination, magnetic pole, winding, insulation, magnetic pole radiated rib, bracer, three bracers are arranged between described magnetic pole, nut is comprised above described bracer, screw, backing plate, described screw to go deep in the counterbore in bracer supported underneath plate and runs through, described bracer passes through screw, nut is fixed in rotating shaft, described bracer axial length L 1 is identical with the axial length L 2 of supporting bracket corresponding below bracer, described bracer structure is identical, center bracer is arranged in rotor axial Central Symmetry face place, end bracer center to center bracer plane of symmetry centre-to-centre spacing is L3, for 1/2 of rotor straight section length L4, air draught cooling space is formed at magnetic supporting wedge bottom, after air in rotor magnetic pole gap arrives bracer surface, part flows through bracer lower support plate, flow forward vertically, wash away the winding at the magnetic pole root position place near rotating shaft, fin surface, after skimming over supporting bracket, flowed out by the magnetic pole gap between bracer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520125392.4U CN204425073U (en) | 2015-03-04 | 2015-03-04 | A kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520125392.4U CN204425073U (en) | 2015-03-04 | 2015-03-04 | A kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425073U true CN204425073U (en) | 2015-06-24 |
Family
ID=53475402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520125392.4U Expired - Fee Related CN204425073U (en) | 2015-03-04 | 2015-03-04 | A kind of four pole salient-pole synchronous motor magnetic supporting wedge leg space ventilation cooling structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425073U (en) |
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2015
- 2015-03-04 CN CN201520125392.4U patent/CN204425073U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20180304 |