CN202111606U - Three-phase brushless AC generator - Google Patents
Three-phase brushless AC generator Download PDFInfo
- Publication number
- CN202111606U CN202111606U CN2011202124710U CN201120212471U CN202111606U CN 202111606 U CN202111606 U CN 202111606U CN 2011202124710 U CN2011202124710 U CN 2011202124710U CN 201120212471 U CN201120212471 U CN 201120212471U CN 202111606 U CN202111606 U CN 202111606U
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- casing
- lug nut
- rear end
- stator
- phase brushless
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Abstract
Provided is a three-phase brushless AC (Alternating Current) generator, relating to AC generators and aiming to solve the problems of present generators of inconvenience in processing, large quantity of materials and small ventilation quantity. The three-phase brushless AC generator comprises a stator, a rotor, an exciter, a rear end cover, a flange cover, a shaft coupling sheet, an end cover and a wire box; the casing is formed by wholly curling a steel plate; the bolt aperture end of a second link nut for connecting the flange cover and the casing is upward arranged so as to increase use space in the flange cover; provided that the gap between the outer periphery of fan blades and the radial direction of the flange cover is 5mm, the diameter of a fan in use can be maximized and the cooling efficiency can be raised.
Description
Technical field
The utility model relates to alternator construction, refers in particular to a kind of structure of three-phase brushless alternating current generator.
Background technology
The excitation mode of existing 120KW～200KW three-phase brushless alternating current generator is that brushless controllable silicon is directly encouraged, absolute damping, stator H level, rotor H level.This alternating current generator has single shaft to hold and two kinds of structural shapes of duplex bearing, and single shaft holds to dock with diesel engine with the shaft coupling sheet and saves fore bearing, shortens length; 12 leading-out ends of stator lead-out wire can use two kinds of frequencies through changing; Four kinds of power under four kinds of voltages, and can be made monophase machine and use; Of many uses, but have following shortcoming:
Referring to Fig. 1; In existing 120KW～160KW three-phase brushless alternating current generator; Casing 11 is the casing structures that adopt the steel plate cans; Have that volume is little, the inorganic shell characteristics of welding sequence (the flange circle promptly need not freeze) radially, but satisfy power demand because the restriction (promptly under the casing condition of same diameter size) of its outside dimension has only through increasing core length (comprising stator core 15 length and rotor core 16 length), cause stock utilizations such as silicon steel sheet, enamelled wire low; Because it has increased core length, increased the use of iron aluminums such as axle, damping system simultaneously.Secondly; As shown in Figure 1; The structure that has adopted lug nut 121,122 to be connected with end cap 13 in this alternating current generator in wherein lug nut 121,122 bolt nose ends (being nose) are packed casing 11 perforates downwards into, is connected end cap 13, blind flange 18 respectively with bolt 171,172 with lug nut 121,122; Adopted this kind structural limitations the outside dimension of fan (promptly under the casing condition of same diameter size), ventilation quantity can't maximize.Mark 17 is a footing among Fig. 1.
Referring to Fig. 2; In existing 160KW～200KW three-phase brushless alternating current generator; Casing 21 adopts the structure of the curling coating of iron plate, two ends welded flange circle 251,252; Connect rear end cap 24 and flange circle 251 through bolt 231,232, blind flange 22 and flange circle 252, this also is the frame mode that generally adopts in the market.This structural volume is big, weight big, the operation that freezes is many.And since this structure casing that must freeze earlier, the technological process of rule again, and excessive can't the use of volume immersed machine continuously when causing the stator dipping lacquer, prolonged the operation circulation time greatly.Mark 25 is a footing among Fig. 2.
In sum, there are shortcomings such as stock utilization is low, processing technology complicacy in existing generator stator structure, has increased production cost, is unfavorable for market competition.
The utility model content
The purpose of the utility model is in order to solve the problem that prior art exists, to provide a kind of simple in structure, and the materials saving is easy to process, the three-phase brushless alternating current generator that ventilation quantity is big.
The purpose of the utility model realizes through following technical scheme:
A kind of three-phase brushless alternating current generator comprises stator, rotor, and exciter, rear end cap, blind flange, the shaft coupling sheet, end shield, wire box, wherein:
Said stator comprises the stator core that has stator winding, the casing that places the stator core outside and the footing that places bottom of shell, and wherein casing adopts the whole cans of steel plate, at its two ends seam is set;
Said rear end cap places the rear end of casing, and the rear end of casing is provided with one second lug nut, and its bolt nose end is placed downwards, passes on the rear end cap installing hole with second bolt and screws in the second lug nut to connect casing and rear end cap;
Said blind flange places the front end of casing, and the front end of casing is provided with one first lug nut, and its bolt nose end is upwards placed, and passes with first bolt that installing hole screws in the first lug nut with connection casing and blind flange on the blind flange;
Said rotor comprises rotor core, rotating shaft, bearing that has the rotor winding and the fan that is connected with rotating shaft, and all parts all adopt hot jacket to install on its shaft, and the neighboring of fan blade and the blind flange gap between radially is 5mm.
Said footing is by two symmetries and angle steel of relatively putting and the frame structure that is welded on the two end plates be combined at two angle steel two ends, and the central authorities of end plate be the circular shape that the external diameter with said casing matees.
Said upward lug nut is in the outer position of casing and is covered with a lug nut cover.
The beneficial effect of the utility model:
1, the first lug nut at blind flange place adopts the mode that the screw thread nose end is outwards installed in the utility model, enlarges the available radius of gyration in the blind flange; Under the casing condition of same diameter dimension; Can amplify fan diameter, improve the ventilation quantity of rotor, improve generator power;
2, the utility model has improved the stator mechanical structure of existing three-phase brushless generator, adopts integral plate cans casing and the outside mounting structure of lug nut thread nose end; Its technology is simple, and is easy to assembly, the materials saving; And safe and reliable, reduced production cost;
3, the utility model adopts integral plate cans casing and the outside mounting structure of lug nut thread nose end.This kind structure can be used the technology mode of outer pressing machine shell behind the first interlocking stator winding, and the volume when having reduced the stator dipping lacquer greatly can effectively utilize and immerse this advanced rotor of machine continuously and soak baking equipment, has improved production efficiency.
The utility model is applicable to 120KW～200KW three-phase brushless alternating current generator mechanical structure.
Be above-mentioned purpose, design feature and the effect that further specifies the utility model, below will combine accompanying drawing that the utility model is elaborated.
Description of drawings
Fig. 1 is existing 120KW～160KW electric generator structure sketch map;
Fig. 2 is existing 160KW～200KW electric generator structure sketch map;
Fig. 3 is the electric generator structure diagram intention of the utility model;
Fig. 4 is the bottom stud structure figure of the utility model;
Fig. 5 is the lug nut assembly structure partial cutaway schematic of the utility model;
Embodiment
Be elaborated below in conjunction with the accompanying drawing of embodiment embodiment to the utility model.
The structure of the three-phase brushless alternating current generator of the utility model is referring to Fig. 3, and it is the same with existing three-phase brushless alternating current generator, mainly comprises stator, rotor, and exciter 36, rear end cap 34, blind flange 316, shaft coupling sheet 317, end shield 31, wire box 37 etc., wherein:
Said stator comprises the stator core 310 that has stator winding 38, the footing 319 that places the casing 39 of stator core 310 outsides and place casing 39 bottoms.Wherein casing 39 adopts the whole cans of steel plates, treat casing 39 moulding during assembling after, again stator core 310 is press-fited in this casing 39, have good covering property and thermal diffusivity, whole mechanism is simple, in light weight; Be used for assembling at the direct turning seams 51 in casing 39 two ends (referring to Fig. 5).Wherein the structure of footing 319 is referring to Fig. 4; It is by two symmetries and angle steel of putting relatively 41 and the frame structure that is welded on two end plates 42 be combined intos at two angle steel 41 two ends; The central authorities of end plate 42 are the circular shape with the external diameter of said casing 39 coupling; To strengthen the integrated support ability of footing, reduce radially weld length of 39 of footing 319 and casings, cause casing 39 to be out of shape when avoiding welding.
Said rear end cap 34 places the rear end of casing 39, and the rear end of casing 39 is provided with one second lug nut 33, and its bolt nose end is placed downwards, passes with second bolt 32 that installing hole screws in the second lug nut 33 on the rear end cap 34, to connect casing 39 and rear end cap 34.
Said blind flange 316 places the front end of casing 39; Stator front end (drive end) is as shown in Figure 5; The front end of casing 39 is provided with one first lug nut 313; Its bolt nose end is upwards placed, and passes with first bolt 314 that installing hole screws in the first lug nut 313 on the blind flange 316, to connect casing 39 and blind flange 316.The first lug nut 313 is in casing 39 outer positions and is covered with a lug nut cover 52 (referring to Fig. 5), is convenient to assembling to locate the first lug nut 313, plays the effect that hides pilot hole slit on the casing 39 simultaneously.
Said rotor comprises rotor core 311, rotating shaft 318, bearing 320 that has rotor winding 312 and the fan 315 that is connected with rotating shaft 318.All parts all adopt hot jacket to install on its shaft 318, and the neighboring of fan 315 blades is left under the condition of 5mm movement clearance between radially with blind flange 316 guaranteeing, the maximization fan diameter maximizes with the exhausting amount that guarantees fan.Mark 35 is a rotating rectifier among Fig. 3.
The structure of the utility model can adopt when the stator dipping lacquer immerses machine continuously; Immersing machine continuously can transmit the process flow of a plurality of workpiece by preliminary drying, dipping lacquer, a lacquer, oven dry by selected pitch time automatically in proper order; Reduce the manpower haulage time, improve the insulating varnish utilance, but it transmits the size that the road has limited the entering workpiece; The utility model just can utilize this high-efficiency appliance to boost productivity after adopting integral plate cans casing structure.The rotor temperature rise is the important performance indexes of generator, and the first lug nut adopts the screw thread nose end outwards to install to have reduced the blind flange volume inside and takies, and makes the fan diameter maximization, improves the exhausting dynamics, reduces the rotor temperature rise, improves generator power.The utility model has also solved the problem that the stator structure stock utilization is low, processing technology is complicated, machining period is long.
The utility model is applicable to the mechanical structure of 120KW～200KW three-phase brushless alternator frame.
Those of ordinary skill in the art will be appreciated that; Above embodiment only is the purpose that is used for explaining the utility model; And be not with the qualification of doing the utility model; As long as in the essential scope of the utility model, in the scope to the variation of the above embodiment, claim that modification all will drop on the utility model.
Claims (3)
1. a three-phase brushless alternating current generator comprises stator, rotor, and exciter (36), rear end cap (34), blind flange (316), shaft coupling sheet (317), end shield (31), wire box (37) is characterized in that:
Said stator comprises the stator core (310) that has stator winding (38), places the casing (39) of stator core (310) outside and the footing (319) that places casing (39) bottom; Wherein casing (39) adopts the whole cans of steel plate, and seam (51) is set at its two ends;
Said rear end cap (34) places the rear end of casing (39); The rear end of casing (39) is provided with one second lug nut (33); Its bolt nose end is placed downwards, passes the last installing hole of rear end cap (34) with second bolt (32) and screws in the second lug nut (33) to connect casing (39) and rear end cap (34);
Said blind flange (316) places the front end of casing (39); The front end of casing (39) is provided with one first lug nut (313); Its bolt nose end is upwards placed, and passes blind flange (316) with first bolt (314) and goes up installing hole and screw in the first lug nut (313) to connect casing (39) and blind flange (316);
Said rotor comprises rotor core (311), rotating shaft (318), bearing (320) that has rotor winding (312) and the fan (315) that is connected with rotating shaft (318); Its shaft (318) is gone up all parts and is all adopted hot jacket to install, and the neighboring of fan (315) blade and blind flange (316) gap between radially is 5mm.
2. three-phase brushless alternating current generator as claimed in claim 1 is characterized in that:
Said footing (319) is by two symmetries and angle steel of relatively putting (41) and the frame structure that is welded on two end plates (42) be combined at two angle steel (41) two ends, and the central authorities of end plate (42) be the circular shape that the external diameter with said casing (39) matees.
3. three-phase brushless alternating current generator as claimed in claim 1 is characterized in that:
The said first lug nut (313) is in the outer position of casing (39) and is covered with a lug nut cover (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202124710U CN202111606U (en) | 2011-06-21 | 2011-06-21 | Three-phase brushless AC generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202124710U CN202111606U (en) | 2011-06-21 | 2011-06-21 | Three-phase brushless AC generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111606U true CN202111606U (en) | 2012-01-11 |
Family
ID=45437055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202124710U Expired - Fee Related CN202111606U (en) | 2011-06-21 | 2011-06-21 | Three-phase brushless AC generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111606U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710080A (en) * | 2012-04-16 | 2012-10-03 | 东莞市高创电机科技有限公司 | High airflow high voltage direct current motor and packaging technology thereof |
| CN102723826A (en) * | 2012-06-26 | 2012-10-10 | 东方电气（乐山）新能源设备有限公司 | Wind power generator structure facilitating air gap adjustment and air gap adjustment assembly method of wind power generator |
| CN108683299A (en) * | 2018-05-07 | 2018-10-19 | 中车永济电机有限公司 | The major-minor integrated generator of brushless synchronous |
-
2011
- 2011-06-21 CN CN2011202124710U patent/CN202111606U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710080A (en) * | 2012-04-16 | 2012-10-03 | 东莞市高创电机科技有限公司 | High airflow high voltage direct current motor and packaging technology thereof |
| CN102723826A (en) * | 2012-06-26 | 2012-10-10 | 东方电气（乐山）新能源设备有限公司 | Wind power generator structure facilitating air gap adjustment and air gap adjustment assembly method of wind power generator |
| CN102723826B (en) * | 2012-06-26 | 2013-09-25 | 东方电气（乐山）新能源设备有限公司 | Wind power generator structure facilitating air gap adjustment and air gap adjustment assembly method of wind power generator |
| CN108683299A (en) * | 2018-05-07 | 2018-10-19 | 中车永济电机有限公司 | The major-minor integrated generator of brushless synchronous |
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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: 20120111 Termination date: 20200621 |