CN218868028U

CN218868028U - Permanent magnet synchronous generator

Info

Publication number: CN218868028U
Application number: CN202223296670.1U
Authority: CN
Inventors: 陈钦松
Original assignee: Shanghai Weihang Equipment Technology Co ltd
Current assignee: Shanghai Weihang Equipment Technology Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-14
Anticipated expiration: 2032-12-08

Abstract

The application discloses permanent magnet synchronous generator, which comprises a housing, be provided with stator core in the casing, rotor core, the apparatus further comprises a rotating shaft, all overlap on stator core and the rotor core is established in the pivot, the stator slot has been seted up on the stator core, be provided with armature winding in the stator slot, be provided with the permanent magnet on the rotor core, be provided with radiator unit on the casing, radiator unit includes circulating pipe and the cooling jacket of setting at the casing both ends, the circulating pipe inlays to be established on the inner wall of casing, two cooling jackets all communicate with the circulating pipe, all leave the transfusion mouth on two cooling water jackets, be provided with the transfer pump on the casing, two transfer lines, the liquid reserve tank, the one end of two transfer lines all communicates with the liquid reserve tank, the other end and arbitrary transfusion mouth of a transfer line are connected, the other end and the port of transfer pump of another transfer line communicate, another port and another transfusion mouth intercommunication of transfer pump have been seted up on the liquid reserve tank, liquid feeding mouth department is provided with the sealing plug. This application is rational in infrastructure, and this application has the effect that improves the radiating efficiency.

Description

Permanent magnet synchronous generator

Technical Field

The application relates to the technical field of generators, in particular to a permanent magnet synchronous generator.

Background

A permanent magnet synchronous generator, also called a brushless synchronous generator, refers to a power generation device that converts mechanical energy converted from heat energy into electrical energy.

In the prior art, chinese patent No. CN102889181B discloses a strong wind resistant small wind power generator, which includes a generator main shaft, blades, a housing, a generator rotor, and a generator stator, wherein the blades are fixed on the generator main shaft, the housing supports the generator main shaft through a bearing, the housing includes a stator housing, a front end cover located at the front end of the stator housing, and a rear end cover located at the rear end of the stator housing, the generator rotor is located in the housing and fixed on the generator main shaft, and the generator stator is fixed on the inner surface of the stator housing of the housing corresponding to the generator rotor.

In realizing this application in-process, the inventor finds that there is following problem at least in this technique, and the installation shell is with permanent magnet generator seal installation, and permanent magnet generator dispels the heat through the installation shell, because the radiating efficiency of installation shell is lower, and the heat dissipation is slower, can lead to the temperature to rise gradually in the installation shell to cause the damage to permanent magnet generator.

SUMMERY OF THE UTILITY MODEL

In order to improve the heat dissipation efficiency of the generator, the application provides a permanent magnet synchronous generator.

The application provides a permanent magnet synchronous generator, adopts following technical scheme:

the utility model provides a permanent magnet synchronous generator, includes the casing, be provided with stator core, rotor core, pivot in the casing, stator core with all the cover is established in the pivot, stator slot has been seted up on the stator core, the stator slot is provided with armature winding, be provided with the permanent magnet on the rotor core, be provided with radiator unit on the casing, radiator unit includes cooling jacket and circulating pipe, the cooling jacket is provided with two, two the cooling jacket is established respectively the cover is established the both ends tip of casing, the circulating pipe inlays to be established on the inner wall of casing, two the cooling jacket all with the circulating pipe intercommunication, two all leave the transfusion mouth on the cooling water jacket, be provided with transfer pump, two transfer pipes, liquid reserve tank on the casing, two the one end of transfer pipe all with the liquid reserve tank intercommunication, one the other end of transfer pipe with arbitrary the transfusion mouth is connected, another the other end of sealing plug with the port intercommunication of transfer pump, another port and another the transfusion mouth intercommunication, the liquid filling opening has been seted up on the liquid reserve tank, liquid filling opening department is provided with the transfer pipe.

Through adopting above-mentioned technical scheme, add radiator unit on the basis of generator natural heat dissipation itself, start the transfer pump and go into the coolant pump in the liquid reserve tank and dispel the heat to the casing in coolant jacket and the circulating pipe when the generator is worked to realize improving radiating efficiency's purpose.

Optionally, a plurality of heat pipes are further arranged in the casing, and each heat pipe is evenly embedded on the casing along the circumferential direction of the casing.

Through adopting above-mentioned technical scheme, set up many heat pipes, utilize the extremely high thermal conductivity of heat pipe to transmit the heat in the middle part of the casing to the casing both ends fast, avoid casing middle part high temperature, promote the temperature uniformity nature of casing.

Optionally, an internal fan is further disposed in the casing, the internal fan is disposed on the rotating shaft, and a rotating shaft of the internal fan is coaxially and fixedly connected with the rotating shaft.

Through adopting above-mentioned technical scheme, set up inside fan in the casing, the generator during operation pivot rotates, and inside fan rotates thereupon to cool off the heat pipe and the casing.

Optionally, the rotor core is disposed between the casing and the stator core, and each of the permanent magnets is uniformly attached to the inner wall of the rotor core.

Through adopting above-mentioned technical scheme, rotor core sets up between casing and stator core, and rotor core exposes the area increase in the air, can realize the effectual air cooling of large tracts of land to it to guarantee the heat dissipation, reduce rotor core temperature rise and then improve motor reliability.

Optionally, a gap between the armature winding and the housing is filled with a heat conducting and insulating material.

Through adopting above-mentioned technical scheme, fill heat conduction insulating material in the gap between armature winding and casing can promote the radiating efficiency of motor with heat rapid transfer to casing, cooperation radiator unit.

Optionally, a hollow cavity is formed in the casing, and a phase change material with a low melting point and high phase change latent heat is filled in the hollow cavity.

By adopting the technical scheme, the phase-change material with low melting point and high phase-change latent heat is filled in the hollow cavity, so that the temperature rise of the end winding is inhibited.

Optionally, the infusion pump is in drive connection with the rotating shaft.

By adopting the technical scheme, when the generator works and generates electricity by driving the rotating shaft externally, the rotating shaft drives the infusion pump to work in a rotating way, so that the synchronous work of the generator and the infusion pump is realized, the heat generated in the permanent magnet generator is continuously dissipated by water circulation,

optionally, a plurality of radiating fins are uniformly arranged on the outer wall of the casing at equal intervals.

Through adopting above-mentioned technical scheme, set up radiating fin on the casing outer wall and be convenient for with the heat effluvium on the casing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heat dissipation component is additionally arranged on the basis of natural heat dissipation of the generator, and when the generator works, the infusion pump is started to pump cooling liquid in the liquid storage tank into the cooling jacket and the circulating pipe to dissipate heat in the shell, so that the aim of improving the heat dissipation efficiency is fulfilled;

2. rotor core sets up between casing and stator core, and rotor core exposes the area increase in the air, can realize the effectual air cooling of large tracts of land to it to guarantee the heat dissipation, reduce rotor core temperature rise and then improve the motor reliability.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a cross-sectional view of the overall structure of an embodiment of the present application;

fig. 3 is a partial structural schematic diagram of an embodiment of the present application, which is used for embodying an armature winding and a permanent magnet.

Description of reference numerals:

1. a housing; 2. a stator core; 3. a rotor core; 4. a rotating shaft; 5. a stator slot; 6. an armature winding; 7. a permanent magnet; 8. a heat dissipating component; 9. a cooling jacket; 10. a circulation pipe; 11. an infusion port; 12. an infusion pump; 13. a transfusion tube; 14. a liquid storage tank; 15. a heat pipe; 16. an internal fan; 18. a hollow cavity; 20. a heat dissipating fin; 21. a housing; 22. an end cap; 23. a fixed block; 24. positioning a block; 25. a rubber ring; 26. a liquid adding port; 27. and (4) sealing plugs.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a permanent magnet synchronous generator, as shown in fig. 1 and fig. 3, the permanent magnet synchronous generator comprises a casing 1, a stator core 2, a rotor core 3 and a rotating shaft 4 are arranged in the casing 1, the stator core 2 and the rotor core 3 are both sleeved on the rotating shaft 4, a stator slot 5 is arranged on the stator core 2, an armature winding 6 is arranged in the stator slot 5, the armature winding 6 adopts a concentrated winding, namely, the pitch is 1, the invalid winding length of the armature winding 6 can be reduced, the weight and the resistance of the armature winding 6 are reduced, the stator slot 5 of the generator adopts an inclined shoulder flat slot, the wire of the armature winding 6 adopts an H-level insulated flat copper wire, the slot filling rate and the power density of the motor are improved, a permanent magnet 7 is arranged on the rotor core 3, rotor core 3 sets up between casing 1 and stator core 2, because expose the area increase in the air, can realize the effectual air cooling of large tracts of land to it, thereby guarantee the heat dissipation, reduce 3 temperature rise of rotor core and then improve motor reliability, each permanent magnet 7 is evenly hugged closely on rotor core 3's inner wall, the magnetic leakage is favorable to improving motor air gap magnetic density at a minimum, one of the best magnetic pole form for permanent magnet synchronous generator, permanent magnet 7 adopts high magnetic energy product neodymium iron boron permanent magnet material, improve motor power density, when generator work electricity generation, rotor core 3 is high-speed rotatory, centrifugal force can strengthen permanent magnet 7 and rotor core 3's laminating, can avoid the additional measure that need do fixed protection with inner rotor core 3 to permanent magnet 7.

As shown in fig. 2 and 3, a heat dissipation assembly 8 is disposed on a casing 1, the heat dissipation assembly 8 includes two cooling jackets 9 and a circulation pipe 10, the two cooling jackets 9 are respectively sleeved on the end portions of two ends of the casing 1, the circulation pipe 10 can be set to be one of a circular flow passage structure, a spiral flow passage structure, an axial flow passage structure or a composite flow passage structure, the circulation pipe 10 is embedded on the inner wall of the casing 1, the two cooling jackets 9 are both communicated with the circulation pipe 10, infusion ports 11 are respectively reserved on the two cooling water jackets, an infusion pump 12, two infusion pipes 13 and a liquid storage tank 14 are disposed on the casing 1, one ends of the two infusion pipes 13 are both communicated with the liquid storage tank 14, the other end of one infusion pipe 13 is connected with any one of the infusion ports 11, the other end of the other infusion pipe 13 is communicated with a port of the infusion pump 12, and the other port of the infusion pump 12 is communicated with the other infusion port 11, the liquid delivery pump 12 is in driving connection with the rotating shaft 4, an internal fan 16 is further arranged in the casing 1, the internal fan 16 is arranged on the rotating shaft 4, a rotating shaft of the internal fan 16 is coaxially and fixedly connected with the rotating shaft 4, a plurality of heat pipes 15 are further arranged in the casing 1, each heat pipe 15 is evenly embedded on the casing 1 along the circumferential direction of the casing 1, the heat in the middle of the casing 1 is quickly transferred to two ends of the casing 1 by utilizing the extremely high heat conductivity of the heat pipes 15, the overhigh temperature in the middle of the casing 1 is avoided, the temperature uniformity of the casing 1 is improved, the rotating shaft 4 rotates when the generator works, the liquid delivery pump 12 starts to work, the internal fan 16 rotates along with the heat pipes, the liquid delivery pump 12 pumps the cooling liquid in the liquid storage tank 14 into one cooling jacket 9, the cooling liquid flows through the circulating pipe 10 and then is discharged from the other cooling jacket 9 into the liquid storage tank 14 to form a complete heat dissipation cycle, a plurality of heat dissipation fins 20 are evenly arranged on the outer wall of the casing 1 at equal intervals, the heat on the machine shell 1 is conveniently dissipated, the liquid storage tank 14 is further provided with a liquid adding opening 26, a sealing plug 27 is arranged at the liquid adding opening 26, sealing of the liquid storage tank 14 is guaranteed, a worker can conveniently add cooling liquid into the liquid storage tank 14, and the cooling liquid can be selected from one of water, transformer oil, water-ethylene glycol and the like.

The heat generated by the armature winding 6 can not be quickly transferred to the casing 1, so that a large amount of heat is accumulated in key parts of the generator to form a local high-temperature area, a gap between the armature winding 6 and the casing 1 is filled with a heat-conducting insulating material which can quickly transfer the heat to the casing 1, the problem of heat dissipation of high-heating parts in the generator is solved, the heat-conducting insulating material can be selected from heat-conducting resin, heat-conducting glue, heat-conducting ceramic and the like, a hollow cavity 18 is formed in the casing 1, a phase-change material with low melting point and high phase-change latent heat is filled in the hollow cavity 18, and the phase-change material with the low melting point and the high phase-change latent heat can obviously inhibit the temperature rise of an end winding, the phase-change material can be gallium and paraffin, the gallium and the paraffin are respectively the best metal and nonmetal phase-change material for inhibiting the temperature rise of the end winding, the casing 1 is processed into a hollow structure and is filled with the paraffin, so as to avoid the leakage of the liquid paraffin, a plurality of heat pipes 15 are also arranged in the casing 1, each heat pipe 15 is uniformly embedded on the casing 1 along the circumferential direction of the casing 1, each heat pipe 15 mainly comprises a shell, a liquid absorbing core and a working medium, the shell of each heat pipe 15 is a sealing structure and is vacuumized, the liquid absorbing core is attached to the inner wall of the shell, and the working medium is vaporized and absorbs a large amount of heat when meeting heat in an evaporation section, so that the gas pressure in the evaporation section rises and the working medium gas is driven to move to a condensation section; the steam is liquefied and releases heat when meeting cold in the condensation section, and the condensed liquid working medium returns to the evaporation section under the driving of the liquid absorption core so as to finish the heat dissipation work.

Casing 1 includes casing 21 and the end cover 22 of setting at casing 21 both ends tip, cooling jacket 9 cover is established on end cover 22, cooling jacket 9 passes through bolted connection with end cover 22, it is provided with fixed block 23 still to fix on cooling jacket 9, be provided with the locating piece 24 with fixed block 23 adaptation on the casing 21, fix end cover 22 at casing 21 tip through fixed block 23 and locating piece 24, it is convenient to make the generator dismantle, cooling jacket 9 is last to be provided with rubber circle 25 with the fixed intercommunication mouth department of circulating pipe 10, rubber circle 25 takes place to deform and tightly supports with the outer wall of circulating pipe 10 when the tip of circulating pipe 10 inserts, promote being connected between circulating pipe 10 and the cooling jacket 9, sealed effect.

The implementation principle of the embodiment is as follows: when the permanent magnet generator works, the rotating shaft 4 rotates, the stator core 2, the rotor core 3 and accessories of the stator core are matched to generate electricity, the internal fan 16 rotates, the infusion pump 12 works to pump cooling liquid in the liquid storage tank 14 into the cooling jacket 9 and the circulating pipe 10 to dissipate heat generated when the generator works, the phase-change material filled in the hollow cavity 18 can obviously inhibit the temperature rise of the armature winding 6 at the moment, the heat-conducting insulating material filled between the armature winding 6 and the machine shell 1 can rapidly transfer the heat to the machine shell 1, and the heat is rapidly dissipated by matching the heat dissipation fins 20 and the heat pipes 15.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a permanent magnet synchronous generator, includes casing (1), be provided with stator core (2), rotor core (3), pivot (4) in casing (1), stator core (2) with all the cover is established on rotor core (3) on pivot (4), stator slot (5) have been seted up on stator core (2), be provided with armature winding (6) in stator slot (5), be provided with permanent magnet (7) on rotor core (3), be provided with radiator unit (8) on casing (1), its characterized in that: radiating component (8) are including cooling jacket (9) and circulating pipe (10), cooling jacket (9) are provided with two, two cooling jacket (9) cover is established respectively the both ends tip of casing (1), circulating pipe (10) are inlayed and are established on the inner wall of casing (1), two cooling jacket (9) all with circulating pipe (10) intercommunication, two infusion mouth (11) all are left on cooling jacket (9), be provided with on casing (1) transfer pump (12), two transfer lines (13), liquid reserve tank (14), two the one end of transfer line (13) all with liquid reserve tank (14) intercommunication, one the other end and the arbitrary of transfer line (13) infusion mouth (11) are connected, another the other end of transfer line (13) with the port intercommunication of transfer pump (12), another port and another of transfer line (12) infusion mouth (11) intercommunication, liquid reserve tank (14) have seted up infusion mouth (26), filling mouth (26) department is provided with sealing plug (27).

2. A permanent magnet synchronous generator according to claim 1, characterized in that: the heat pipe heat dissipation device is characterized in that a plurality of heat pipes (15) are further arranged in the machine shell (1), and each heat pipe (15) is evenly embedded in the machine shell (1) along the circumferential direction of the machine shell (1).

3. A permanent magnet synchronous generator according to claim 2, characterized in that: an internal fan (16) is further arranged in the machine shell (1), the internal fan (16) is arranged on the rotating shaft (4), and a rotating shaft of the internal fan (16) is coaxially and fixedly connected with the rotating shaft (4).

4. A permanent magnet synchronous generator according to claim 3, characterized in that: the rotor core (3) is arranged between the casing (1) and the stator core (2), and the permanent magnets (7) are uniformly attached to the inner wall of the rotor core (3).

5. A permanent magnet synchronous generator according to claim 2, characterized in that: and a gap between the armature winding (6) and the shell (1) is filled with a heat-conducting insulating material.

6. A permanent magnet synchronous generator according to claim 5, characterized in that: the shell (1) is provided with a hollow cavity (18), and the hollow cavity (18) is filled with a phase-change material with a low melting point and high phase-change latent heat.

7. A permanent magnet synchronous generator according to claim 1, characterized in that: the infusion pump (12) is in driving connection with the rotating shaft (4).

8. A permanent magnet synchronous generator according to claim 1, characterized in that: the outer wall of the machine shell (1) is evenly provided with a plurality of radiating fins (20) at equal intervals.