CN211127439U

CN211127439U - Cast aluminum rotor of generator

Info

Publication number: CN211127439U
Application number: CN201922415413.7U
Authority: CN
Inventors: 郁金华
Original assignee: Jiangsu Changyi Motor Technology Co ltd
Current assignee: Jiangsu Changyi Motor Technology Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-07-28
Anticipated expiration: 2029-12-28

Abstract

The utility model provides a generator cast aluminium rotor, which comprises a housin, casing one end is equipped with the even interval distribution's of circumference a plurality of first radiator fin and a plurality of first balancing post, the casing other end is equipped with the even interval distribution's of circumference a plurality of second radiator fin and a plurality of second balancing post. The mass distribution of the rotor is changed by adding the balance pieces on the first balance column or the second balance column, so that the rotor vibration caused by eccentric centrifugal force or the dynamic load acting on the bearing is reduced to an allowable range, and the aim of balanced operation of the generator is fulfilled; the radiating blades are used for radiating heat generated by rotation of the rotor, and the balance columns rotate along with the rotor, so that the radiating effect is achieved.

Description

Cast aluminum rotor of generator

Technical Field

The utility model relates to a generator technical field specifically is a generator cast aluminium rotor.

Background

The generator is mechanical equipment which converts other forms of energy into electric energy, is driven by a water turbine, a steam turbine, a diesel engine or other power machines, converts energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits the mechanical energy to the generator, and then the generator converts the mechanical energy into electric energy.

The generator is generally composed of a stator, a rotor, an end cover, a bearing and other parts; to save costs, cast aluminum rotors are commonly used; however, due to the reasons of uneven material of the cast aluminum rotor, process errors, uneven deformation of rotor blades, uneven wear or local chipping and the like, the rotor is always unbalanced, thereby causing rotor vibration, accelerating the wear of parts such as bearings, shaft seals and the like, and reducing the service life and the efficiency of the machine.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the technical problem that the balance of a traditional cast aluminum rotor is poor is solved.

The utility model provides a generator cast aluminium rotor, which comprises a housin, casing one end is equipped with the even interval distribution's of circumference a plurality of first radiator fin and a plurality of first balancing post, the casing other end is equipped with the even interval distribution's of circumference a plurality of second radiator fin and a plurality of second balancing post.

The mass distribution of the rotor is changed by adding the balance pieces on the first balance column or the second balance column, so that the rotor vibration caused by eccentric centrifugal force or the dynamic load acting on the bearing is reduced to an allowable range, and the aim of balanced operation of the generator is fulfilled; the radiating blades are used for radiating heat generated by rotation of the rotor, and the balance columns rotate along with the rotor, so that the radiating effect is achieved.

Further, the first radiating blades and the second radiating blades have the same structure, and the first radiating blades are provided with cylindrical parts. The cylindrical part is used as a reinforcing rib of the radiating fin, so that the radiating fin has higher strength and is not easy to break.

Furthermore, the first radiating blades and the second radiating blades point to the circle center of the shell. Therefore, the area of the heat dissipation blades acting on hot air is the largest in the rotation process of the rotor, and the heat dissipation effect is improved.

Further, the cross sections of the first balance column and the second balance column are oval. The balancing pole sets up the long circular shape, the intensity of the balancing pole of increase.

Further, the first balance column and the second balance column point to the center position of the shell. Therefore, the area of the balance column acting on hot air is the largest in the rotation process of the rotor, and the heat dissipation effect of the balance column is improved.

Further, the top of the first balance column is conical. The balancing pole with the top part provided with the conical shape is generally positioned at the light end of the rotor, so that the balancing piece is convenient to mount.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view at B in FIG. 1;

FIG. 3 is a right side view of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a left side view of the present invention;

in the figure: 1. a housing; 2. a first heat dissipating fin; 3. a first balance column; 4. a second heat dissipating fin; 5. a second balance column.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, the utility model relates to a generator cast aluminum rotor, which comprises a casing 1, as shown in fig. 3, one end of the casing 1 is provided with ten first cooling blades 2 and ten first balance posts 3 which are distributed at equal intervals on the circumference, as shown in fig. 5, the other end of the casing 1 is provided with ten second cooling blades 4 and ten second balance posts 5 which are distributed at equal intervals on the circumference;

the first radiating blades 2 and the second radiating blades 4 have the same structure, and the first radiating blades 2 are provided with cylindrical parts; the cylindrical part is used as a reinforcing rib of the radiating blade, so that the radiating blade has higher strength and is not easy to break; the first radiating blades 2 and the second radiating blades 4 point to the circle center of the shell 1, and the area of the radiating blades acting on hot air is the largest in the rotating process of the rotor, so that the radiating effect is improved;

as shown in fig. 4, the cross section of the first balancing column 3 and the cross section of the second balancing column 5 are oval; increased strength of the balancing post; the first balance post 3 and the second balance post 5 point to the circle center of the shell 1, and the area of the balance posts acting on hot air is the largest in the rotation process of the rotor, so that the heat dissipation effect of the balance posts is improved; as shown in fig. 3, the top of the first balance post 3 is tapered; the balancing column with the conical top is generally positioned at one end with light weight of the rotor, so that a balancing sheet is convenient to mount;

the mass distribution of the rotor is changed by adding the balance sheets on the first balance column 3 or the second balance column 5, so that the rotor vibration caused by eccentric centrifugal force or the dynamic load acting on the bearing is reduced to an allowable range, and the aim of balanced operation of the generator is fulfilled; the radiating blades are used for radiating heat generated by rotation of the rotor, and the balance columns rotate along with the rotor, so that the radiating effect is achieved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A generator cast-aluminum rotor is characterized in that: including casing (1), casing (1) one end is equipped with a plurality of first radiator fin (2) and a plurality of first balanced post (3) of the even interval distribution of circumference, casing (1) other end is equipped with a plurality of second radiator fin (4) and a plurality of second balanced post (5) of the even interval distribution of circumference.

2. The cast aluminum rotor of an electric generator of claim 1, wherein: the first radiating blades (2) and the second radiating blades (4) are identical in structure, and the first radiating blades (2) are provided with cylindrical portions (21).

3. The generator cast aluminum rotor of claim 1 or 2, wherein: the first radiating blades (2) and the second radiating blades (4) point to the circle center of the shell (1).

4. The cast aluminum rotor of an electric generator of claim 1, wherein: the cross sections of the first balancing column (3) and the second balancing column (5) are oval.

5. The generator cast aluminum rotor of claim 4, wherein: the first balance column (3) and the second balance column (5) point to the circle center position of the shell (1).

6. The cast aluminum rotor of an electric generator of claim 1, wherein: the top of the first balancing column (3) is conical.