CN202978660U - Short shaft type brushless synchronous generator - Google Patents

Abstract

The utility model relates to a generator field especially relates to a brushless synchronous generator. The utility model provides a brushless synchronous generator of minor axis formula, includes casing, pivot, generator stator, generator rotor, exciter stator, exciter armature, rotary rectifier and terminal box, the casing is passed in the pivot, generator rotor, exciter armature fixed mounting are in order in the pivot, generator stator and exciter stator fixed mounting are in the casing, and generator stator cooperatees with generator rotor, and exciter stator cooperatees with exciter armature, terminal box fixed mounting is outside the casing, and the electricity is connected between generator rotor and the exciter armature, rotary rectifier fixed mounting on exciter armature. The utility model discloses a rotatory rectifier snap-on need not additionally to occupy the epaxial position of commentaries on classics on the exciter armature, has reduced the length of generator, has practiced thrift the space that the generator occupy to a certain extent, specially adapted small-size generator.

Description

Short shaft brushless synchronous generator

technical field

The utility model relates to the field of generators, in particular to a brushless synchronous generator.

Background technique

Because electric energy has the advantages of relatively economical production and transformation, relatively easy transmission and distribution, and convenient use and control, it has become the most commonly used energy source in modern times. And with the continuous development of the national economy, the degree of automation is getting higher and higher, and the demand for electricity is increasing. Not only the quantity of electricity consumption is required, but also the quality of electricity consumption is required, which undoubtedly affects the performance of synchronous generators. made high demands. The excitation method directly affects the performance, reliability and technical requirements of the generator, so the research on the excitation method has become an important topic in the development of the motor. Originally, DC generators were used for excitation, that is, DC generators were used to generate direct current, and the rotors of synchronous generators were introduced along the ring and brushes. However, with the continuous increase of motor capacity, the commutation of DC motors has been Becomes a big problem and requires carbon brushes and bezels, there are carbon brush wear and carbon brush dust pollution coil insulation and other parts problems.

The brushless synchronous generator is composed of main parts such as main generator, AC exciter, and rotating rectifier. The rotor of the main generator, the armature of the exciter and the rotating rectifier are all installed on the same shaft in order to rotate together, so that the length of the shaft will be There are certain requirements, which increase the volume of the generator to a certain extent, and have a greater impact on small generators.

Contents of the invention

The technical problem to be solved by the utility model is to provide a short-shaft brushless synchronous generator. The rotary rectifier of the generator is directly fixed on the armature of the exciter, which saves the space occupied by the generator to a certain extent and is beneficial to realize the miniaturization.

The utility model is realized in the following way: a short-axis brushless synchronous generator, including a casing, a rotating shaft, a generator stator, a generator rotor, an exciter stator, an exciter armature, a rotary rectifier and a junction box, the rotating shaft Through the casing, the generator rotor and the exciter armature are fixedly installed on the rotating shaft in sequence, the generator stator and the exciter stator are fixedly installed in the casing, the generator stator cooperates with the generator rotor, and the exciter The stator cooperates with the exciter armature, the junction box is fixedly installed outside the casing, the generator rotor is electrically connected with the exciter armature, and the rotating rectifier is fixedly installed on the exciter armature.

The casing is provided with cooling vents.

The front end of the rotating shaft is connected with the connecting steel sheet through a coupling.

The front and rear ends of the casing are respectively provided with a front end cover and a rear end cover, and the rotating shaft is connected with the front end cover and the rear end cover through bearings.

A fan is also fixedly installed on the rotating shaft, and the fan is arranged in the casing, and the blowing surface of the fan faces the generator stator and the generator rotor.

The junction box is equipped with an excitation regulator.

The junction box is fixedly installed on the top of the casing.

The rotary rectifier of the short-shaft brushless synchronous generator of the utility model is directly fixed on the armature of the exciter, which does not need to occupy an additional position on the rotating shaft, reduces the length of the generator, and saves the space occupied by the generator to a certain extent. Suitable for small generators.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the short shaft brushless synchronous generator of the present invention.

In the figure: 1 casing, 2 front end cover, 3 rear end cover, 4 rotating shaft, 5 generator stator, 6 generator rotor, 7 exciter stator, 8 exciter armature, 9 rotating rectifier, 10 junction box, 11 heat dissipation port , 12 couplings, 13 connecting steel sheets, 14 excitation regulators, 15 fans.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Example 1

As shown in Figure 1, a short-shaft brushless synchronous generator includes a casing 1, a rotating shaft 4, a generator stator 5, a generator rotor 6, an exciter stator 7, an exciter armature 8, a rotating rectifier 9 and wiring Box 10, the rotating shaft 4 passes through the casing 1, the generator rotor 6 and the exciter armature 8 are fixedly installed on the rotating shaft 4 in sequence, and the generator stator 5 and the exciter stator 7 are fixedly installed on the casing 1 Inside, the generator stator 5 cooperates with the generator rotor 6, the exciter stator 7 cooperates with the exciter armature 8, and the junction box 10 is fixedly installed outside the casing 1, between the generator rotor 6 and the exciter armature 8 Electrically connected, the rotary rectifier 9 is fixedly installed on the armature 8 of the exciter.

In this embodiment, the casing 1 is provided with a cooling vent 11

The utility model can be further described as, the front end of the rotating shaft 4 is connected with the connecting steel sheet 13 through the coupling 12, and the connecting steel sheet 13 is connected with a diesel engine or a steam turbine to drive the rotating shaft 4 to rotate and generate electricity.

In this embodiment, the front and rear ends of the casing 1 are provided with a front end cover 2 and a rear end cover 3 respectively, and the rotating shaft 4 is connected with the front end cover 2 and the rear end cover 3 through bearings.

In this embodiment, in order to ensure the heat dissipation effect inside the motor, a fan 15 is fixedly installed on the rotating shaft 4, and the fan 15 is arranged in the casing 1, and the blowing surface of the fan 15 faces the generator stator 5 and the power generator. Machine rotor 6.

In this embodiment, the junction box 10 is equipped with an excitation regulator 14 .

In this embodiment, the junction box 10 is fixedly installed on the top of the casing 1, and a junction board is installed in the junction box 10 to facilitate the extraction of alternating current.

Claims (7)

1. A short shaft type brushless synchronous generator, comprising casing (1), rotating shaft (4), generator stator (5), generator rotor (6), exciter stator (7), exciter armature ( 8), rotating rectifier (9) and terminal box (10), described rotating shaft (4) passes through casing (1), described generator rotor (6), exciter armature (8) are fixedly installed on rotating shaft in sequence (4), the generator stator (5) and the exciter stator (7) are fixedly installed in the casing (1), the generator stator (5) cooperates with the generator rotor (6), and the exciter stator ( 7) Cooperate with the exciter armature (8), the junction box (10) is fixedly installed outside the casing (1), and the generator rotor (6) is electrically connected with the exciter armature (8), the characteristic is : the rotating rectifier (9) is fixedly installed on the exciter armature (8). 2. The short-shaft brushless synchronous generator according to claim 1, characterized in that: the casing (1) is provided with a heat dissipation port (11). 3. The short-shaft brushless synchronous generator according to claim 1 or 2, characterized in that: the front end of the rotating shaft (4) is connected to the connecting steel plate (13) through a coupling (12). 4. The short-shaft brushless synchronous generator according to claim 1 or 2, characterized in that: the front and rear ends of the casing (1) are respectively provided with a front end cover (2) and a rear end cover (3) , the rotating shaft (4) is connected with the front end cover (2) and the rear end cover (3) through bearings. 5. The short-shaft brushless synchronous generator according to claim 1 or 2, characterized in that: a fan (15) is fixedly mounted on the rotating shaft (4), and the fan (15) is arranged in the casing (1), the blowing face of the fan (15) faces the generator stator (5) and the generator rotor (6). 6. The short-shaft brushless synchronous generator according to claim 1 or 2, characterized in that: the junction box (10) is equipped with an excitation regulator (14). 7. The short-shaft brushless synchronous generator according to claim 6, characterized in that: the junction box (10) is fixedly installed on the top of the casing (1).

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