CN213585315U - Light high-speed large-capacity air-water cooling synchronous generator - Google Patents

Light high-speed large-capacity air-water cooling synchronous generator Download PDF

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Publication number
CN213585315U
CN213585315U CN202022812396.3U CN202022812396U CN213585315U CN 213585315 U CN213585315 U CN 213585315U CN 202022812396 U CN202022812396 U CN 202022812396U CN 213585315 U CN213585315 U CN 213585315U
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China
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air
axial flow
stator
top plate
shaped guide
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CN202022812396.3U
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Inventor
王晓俊
赵强
吴宣东
蔡合超
赵现伟
张磊
孙征
麻晓慧
蒋娟
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Wolong Electric Drive Group Co Ltd
Wolong Electric Nanyang Explosion Protection Group Co Ltd
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Wolong Electric Group Co Ltd
Wolong Electric Nanyang Explosion Protection Group Co Ltd
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Abstract

The utility model discloses a light-duty high-speed large capacity air-water cooling synchronous generator, include: the air-water cooler is arranged on the base, the stator is arranged on the air-water cooler, the salient pole rotor is arranged on the salient pole rotor, and the excitation unit is arranged on the excitation unit. The air-water cooler comprises a shell and cores, wherein a plurality of L-shaped guide plates are arranged on one opposite sides of the two cores, one end of each L-shaped guide plate is connected with the core, and the other end of each L-shaped guide plate is connected with the top plate; the stator comprises a stator core and a stator winding, an air duct is arranged between the stator core and the top plate, and the air duct is communicated with the airflow channel; the two ends of the stator winding are respectively provided with a wind shield fixed on the lower end surface of the top plate; two axial flow fans are arranged on the salient pole rotor, and the positions of the axial flow fans correspond to the positions of the wind shields. The generator adopts the salient pole rotor with short axial dimension, the L-shaped guide plate is arranged in the shell of the cooler, and the hot air flowing out of the machine base is guided and partitioned, so that the inlet vortex and the flow pressure loss are reduced.

Description

Light high-speed large-capacity air-water cooling synchronous generator
Technical Field
The utility model belongs to the technical field of the generator, specifically a light-duty high-speed large capacity air-water cooling synchronous generator.
Background
Along with the high-speed growth of the demand of the electric power market and the improvement of economic and technical indexes, the development of the manufacturing industry of modern generators, the capacity of a single machine of the generator is urgently required to be increased, and along with the increase of heat load, the conventional generator cooling structure cannot meet the requirement of large-capacity ventilation and heat dissipation of the high-speed generator, so that the temperature of each part of the motor is increased, and the service life and the operation reliability of the motor are influenced. When a large-capacity generator runs at a high speed, a non-salient pole generator is usually adopted due to the influence of centrifugal force, the processing time of a rotor shaft embedding slot of the non-salient pole generator is long, the embedding of a rotor winding is difficult, and the manufacturing process is complex; the generator base adopts a combination form of a cylinder and a box welded by a steel plate, the upper part of the shaft center line is semicircular, and the lower part of the shaft center line is of a box-type structure, so that the requirement on the processing precision of the generator base is high, and the generator base structure is heavy; the exciting unit needs to be separately provided with a fan power element to realize cooling; the air-water cooler is arranged below the main generator bottom plate, so that the field installation and debugging are inconvenient; the support adopts a seat type sliding bearing, so that the axial size of the motor rotor is long, the rigidity of the rotor is reduced, the deflection is increased, and the stability is poor.
Disclosure of Invention
The utility model aims at the not enough of above-mentioned prior art, provide a light-duty high-speed large capacity air-water cooling synchronous generator that cooling performance, structural stability improve.
For solving the above technical problem, the utility model discloses a technical scheme is:
a light-duty high-speed large capacity air-water cooling synchronous generator includes: the air-water cooler is arranged on the base, the stator is arranged on the air-water cooler, the salient pole rotor is arranged on the salient pole rotor, and the excitation unit is arranged on the excitation unit.
The engine base comprises a front end cover, a rear end cover and a top plate, and an accommodating space is formed inside the engine base.
The air-water cooler comprises a shell and two cores, wherein a heat exchange space is formed in the shell, and two ends of the heat exchange space are communicated with the accommodating space; two the relative one side of core is equipped with a plurality of L type guide plates, L type guide plate one end with the core is connected, and the other end with the roof is connected, L type guide plate with the core forms a plurality of airflow channel of different regions of intercommunication core.
The stator comprises a stator core and a stator winding, the stator winding is embedded on the stator core, a ventilation slot pipe is arranged between the stator core and the top plate, and the ventilation slot pipe is communicated with the airflow channel; and wind shields fixed on the lower end face of the top plate are respectively arranged outside two ends of the stator winding.
The salient pole rotor is connected with the front end cover and the rear end cover through bearings, two axial flow fans are arranged on the salient pole rotor, the axial flow fans correspond to the wind shield in position, and a gap is reserved between the axial flow fans and the wind shield.
The excitation unit is connected to the rear end cover and is provided with an air inlet guide pipe and an air outlet guide pipe, the air inlet guide pipe is connected with the rear end cover, and the air outlet guide pipe is connected with the wind shield.
The salient pole rotor comprises a rotating shaft, bosses, magnetic pole coils, magnetic pole shoes, pressing plates and insulating bolts, wherein the magnetic pole coils are wound outwards from the bottoms of the bosses along the same direction, the magnetic pole shoes are fixed at the ends of the bosses and press the magnetic pole coils, and the pressing plates are connected between the bosses through the insulating bolts and are used for pressing the side faces of the magnetic pole coils.
The top plate of the engine base and the shell of the cooler are sealed through rubber pads.
The axial flow fans adopt large-attack-angle blades, and the two axial flow fans form a symmetrical circulating air path for air inlet from two sides in the motor.
The clearance between the axial flow fan and the wind shield is 2.5-5 mm.
The utility model has the advantages that: the generator adopts the salient pole rotor, the axial size of a rotor winding is short, the wind resistance of the rotor is reduced, the contact area of a rotor magnetic pole coil and circulating air is increased, and the good cooling effect of the rotor is ensured; the salient pole rotor is provided with the high-efficiency wing type axial flow fan, the air volume can be increased by adopting a large attack angle of the blades, and the high-efficiency wing type axial flow fan is very beneficial to ventilation and heat dissipation of a high-speed large-capacity generator; an air-water cooler is arranged above the base, an L-shaped guide plate is arranged in a shell of the cooler, and hot air flowing out of the base is guided and divided, so that the uniform flow of air flow is ensured, and the inlet vortex and the flow pressure loss are reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a partial schematic view of a salient pole rotor shaft in cross section.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
As shown in fig. 1 to 2, a light-weight, high-speed, large-capacity air-water-cooled synchronous generator includes: the device comprises a machine base 1, an air-water cooler 4, a stator 2, a salient pole rotor 3 and an excitation unit 5.
The engine base 1 comprises a front end cover 11, a rear end cover 12 and a top plate 13, and an accommodating space is formed inside the engine base;
the air-water cooler 4 comprises a shell 41 and two cores 42, wherein a heat exchange space is formed in the shell 41, and two ends of the heat exchange space are communicated with the accommodating space; and three L-shaped guide plates 43 are arranged on the opposite sides of the two cores 42, one end of each L-shaped guide plate 43 is connected with the core 42, the other end of each L-shaped guide plate 43 is connected with the top plate 13, and the L-shaped guide plates 43 and the cores 42 form a plurality of air flow channels 44 which are communicated with the cores 42 and are arranged in different areas from top to bottom.
The stator 2 comprises a stator core 21 and a stator winding 22, the stator winding 22 is embedded on the stator core 21, a ventilation slot pipe 23 is arranged between the stator core 21 and the top plate 13, and the ventilation slot pipe 23 is communicated with the airflow channel 44; and wind shields 15 fixed on the lower end surface of the top plate 13 are respectively arranged outside two ends of the stator winding 22.
The salient pole rotor 3 is connected with the front end cover 11 and the rear end cover 12 through bearings, two axial flow fans 31 are arranged on the salient pole rotor 3, the axial flow fans 31 correspond to the wind shield 15 in position, and a gap is reserved between the axial flow fans 31 and the wind shield 15.
The excitation unit 5 is connected to the rear end cover 12 and is provided with an air inlet guide pipe 14 and an air outlet guide pipe 16, the air inlet guide pipe 14 is connected with the rear end cover 12, and the air outlet guide pipe 16 is connected with the wind shield 15. A one-way air path circulating structure is formed, and the cooling air path structure of the excitation unit 5 is simpler and more effective.
The salient pole rotor 3 comprises a rotating shaft 33, bosses 34, pole coils 36, pole shoe 35, a pressing plate 37 and insulating bolts 38, wherein the pole coils 36 are wound outwards from the bottoms of the bosses 34 along the same direction, the pole shoe 35 is fixed at the end of each boss 34 and presses the pole coil 36, and the pressing plate 37 is connected between the bosses 34 through the insulating bolts 38 and is used for pressing the side faces of the pole coils 36.
The top plate 13 of the housing 1 and the housing 41 of the cooler are sealed by rubber gaskets.
The axial flow fans 31 adopt blades with large attack angles, and the two axial flow fans 31 form symmetrical circulating air paths for air inlet from two sides inside the motor.
The clearance between the axial flow fan 31 and the wind shield 15 is 2.5-5 mm.
When the generator starts to work, under the power action of the axial flow fans 31 at the two ends of the salient pole rotor 3, cold air flowing out of the core 42 is sucked from the areas at the two ends of the containing space in the base 1, part of the cold air enters the exciting unit 5 along the air duct, internal airflow flows by the pressure generated by the rotating part of the exciting motor to cool the exciting unit 5, a unidirectional circulation air path of the exciting unit 5 is formed, the cold air flows out of the air outlet along the air duct, enters the end coil area to be converged with main airflow blown to the end winding by the axial flow fans 31, then flows out of the back of the stator core 21 along the ventilation slot pipe 23 at the end part of the stator 2, and then directly flows into the air-water cooler 4 to perform enhanced heat exchange and temperature reduction with external cooling water in the water pipe of the cooler core 42.
Meanwhile, the salient pole rotor 3 rotates to drive the air to boost pressure, and the air flow is driven to be close to the inlet of the stator 2 iron core radial ventilation channel, flows out along the stator 2 iron core radial ventilation channel and then enters the air-water cooler 4 for cooling; after the hot air is cooled by the cooler core 42, the cold air enters the inner area of the motor base 1 from both ends along the wind shields 15 again, and the next cooling cycle is started.
The generator adopts the salient pole rotor 3, the axial size of a rotor winding is short, the wind resistance of the rotor is reduced, the contact area of a rotor pole coil 36 and circulating air is increased, and the good cooling effect of the rotor is ensured; the salient pole rotor 3 is provided with a high-efficiency wing type axial flow fan 31, and the large attack angle of the blades can increase the air quantity, so that the high-efficiency wing type axial flow fan is very beneficial to ventilation and heat dissipation of a high-speed large-capacity generator; an air-water cooler 4 is arranged above the base 1, an L-shaped guide plate 43 is arranged in a cooler shell 41, and hot air flowing out of the base 1 is guided and divided, so that uniform air flow is ensured, and inlet vortex and flow pressure loss are reduced. The top of the accessory of the outlet of the cooler core body 42 is also provided with a circular arc-shaped guide plate, so that the top vortex is prevented from rotating around to cause flow loss, and the motor efficiency can be effectively improved by adopting a guide plate structure.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.

Claims (5)

1. The utility model provides a light-duty high-speed large capacity air-water cooling synchronous generator which characterized in that includes:
the engine base comprises a front end cover, a rear end cover and a top plate, and an accommodating space is formed in the engine base;
the air-water cooler comprises a shell and two cores, wherein a heat exchange space is formed in the shell, and two ends of the heat exchange space are communicated with the accommodating space; a plurality of L-shaped guide plates are arranged on one opposite sides of the two cores, one end of each L-shaped guide plate is connected with the core, the other end of each L-shaped guide plate is connected with the top plate, and the L-shaped guide plates and the cores form a plurality of airflow channels communicated with different areas of the cores;
the stator comprises a stator core and a stator winding, the stator winding is embedded on the stator core, an air duct is arranged between the stator core and the top plate, and the air duct is communicated with the airflow channel; the two ends of the stator winding are respectively provided with a wind shield fixed on the lower end surface of the top plate;
the salient pole rotor is connected with the front end cover and the rear end cover through bearings, two axial flow fans are arranged on the salient pole rotor, the axial flow fans correspond to the wind shield in position, and a gap is reserved between the axial flow fans and the wind shield;
and the excitation unit is connected to the rear end cover and is provided with an air inlet guide pipe and an air outlet guide pipe, the air inlet guide pipe is connected with the rear end cover, and the air outlet guide pipe is connected with the wind shield.
2. The light-duty high-speed large-capacity air-water-cooled synchronous generator according to claim 1, characterized in that: the salient pole rotor comprises a rotating shaft, bosses, magnetic pole coils, magnetic pole shoes, pressing plates and insulating bolts, wherein the magnetic pole coils are wound outwards from the bottoms of the bosses along the same direction, the magnetic pole shoes are fixed at the ends of the bosses and press the magnetic pole coils, and the pressing plates are connected between the bosses through the insulating bolts and are used for pressing the side faces of the magnetic pole coils.
3. The light-duty high-speed large-capacity air-water-cooled synchronous generator according to claim 1, characterized in that: the top plate of the engine base and the shell of the cooler are sealed through rubber pads.
4. The light-duty high-speed large-capacity air-water-cooled synchronous generator according to claim 1, characterized in that: the axial flow fans adopt large-attack-angle blades, and the two axial flow fans form a symmetrical circulating air path for air inlet from two sides in the motor.
5. The light-duty high-speed large-capacity air-water-cooled synchronous generator of claim 4, characterized in that: the clearance between the axial flow fan and the wind shield is 2.5-5 mm.
CN202022812396.3U 2020-11-30 2020-11-30 Light high-speed large-capacity air-water cooling synchronous generator Active CN213585315U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022812396.3U CN213585315U (en) 2020-11-30 2020-11-30 Light high-speed large-capacity air-water cooling synchronous generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022812396.3U CN213585315U (en) 2020-11-30 2020-11-30 Light high-speed large-capacity air-water cooling synchronous generator

Publications (1)

Publication Number Publication Date
CN213585315U true CN213585315U (en) 2021-06-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022812396.3U Active CN213585315U (en) 2020-11-30 2020-11-30 Light high-speed large-capacity air-water cooling synchronous generator

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114498989A (en) * 2021-12-29 2022-05-13 西安中车永电捷力风能有限公司 Wind driven generator with cooling function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114498989A (en) * 2021-12-29 2022-05-13 西安中车永电捷力风能有限公司 Wind driven generator with cooling function
CN114498989B (en) * 2021-12-29 2024-03-26 西安中车永电捷力风能有限公司 Wind driven generator with cooling function

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