Integrated design of exciter and rotary rectifying device in generator

Abstract

The invention discloses an integrated design of an exciter and a rotary rectifying device in a generator, and relates to the technical field of generators, the integrated design comprises a shaft body and the rotary rectifying device, the shaft body is sleeved with an exciter rotor iron core, and an exciter rotor winding is embedded in an exciter rotor iron core groove; the rotary rectifying device is composed of a fixing plate, a supporting ring, a collecting ring, a pressure-sensitive module and a rotary rectifying module, a coil of the exciter rotor iron core is welded and then leads out an outgoing line, and the outgoing line is connected to the rotary rectifying module through a cold pressing end; the support ring is fixed on the end face of the exciter rotor core through a rivet and is integrated with the exciter rotor core. The excitation rotor and the rotary rectification module are integrally designed into an integrated structure, a rotary rectification hub is omitted, a supporting ring is added, the risk that the rotary rectification module falls off when the generator rotates at a high speed is reduced, the axial length of the generator is shortened, materials are saved, and cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of generators, and in particular to an integrated design of an exciter and a rotating rectifier in a generator. Background Art

[0002] Generally speaking, when the rotor shaft of a three-phase brushless synchronous generator is long, the rotating rectifier is located between the main rotor and the exciter rotor. When the generator is limited in axial space, the rotating rectifier cannot be placed between the two, and the space for the rotating rectifier needs to be considered.

[0003] like Figure 3 As shown, the generator rotor in the prior art is composed of a main engine rotor core, a main engine rotor winding, a fan, an exciter rotor core, an exciter rotor winding, a rotating rectifier, etc. Usually, the rotating rectifier is fixed to the shaft surface, and the main engine rotor winding lead wire and the exciter rotor winding lead wire are connected to the rotating rectifier module through a collector ring to form a rotating rectifier.

[0004] However, from Figure 3 It can be found that the existing technology has the following problems:

[0005] 1. The main engine rotor, exciter rotor and rotating rectifier are in series structure, which makes the axial length of the generator very long and the weight of the generator increased.

[0006] 2. The rotating rectifier module is installed axially, and the centripetal force it receives is completely concentrated on the mounting bolts of the rotating rectifier module. When the rotor rotates at high speed, there is a risk that the rotating rectifier module will fall off.

[0007] 3. The lead wires of the main engine rotor and the exciter rotor are respectively led to the rotating rectifier device. Longer lead wires are at risk of breaking when the generator rotates at high speed. Summary of the invention

[0008] The present invention provides an integrated design structure of an exciter and a rotating rectifier, which shortens the axial length of the generator. The main engine rotor is led to the rotating rectifier module through an axial slot, and the lead wires of the exciter rotor winding are welded to the cold-pressed terminal and directly led to the rotating rectifier, which solves the risk of breakage of the longer lead wires when the generator rotates at high speed, and can also reduce the size of the generator and reduce the weight of the generator.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] The integrated design of the exciter and the rotating rectifier in the generator includes a shaft body and a rotating rectifier, wherein the shaft body is provided with an exciter rotor core, and the exciter rotor winding is embedded in the exciter rotor core slot;

[0011] The rotary rectifier device is composed of a fixed plate, a support ring, a collector ring, a pressure-sensitive module and a rotary rectifier module, and the collector ring is installed on the support ring;

[0012] The lead wires are led out after the coils of the exciter rotor core are welded, and the lead wires are connected to the rotating rectifier module through cold-pressed terminals. The support ring is fixed to the end surface of the exciter rotor core through rivets and becomes one with the exciter rotor core.

[0013] As a preferred technical solution of the present invention, the fixing plate, the pressure-sensitive module and the rotating rectifier module are all fixed to the end face of the exciter rotor core by bolts.

[0014] The beneficial effects of the present invention are:

[0015] The present invention integrates the excitation rotor and the rotating rectifier module into an integral structure, eliminating the rotating rectifier hub, adding a support ring, reducing the risk of the rotating rectifier module falling off when the generator rotates at high speed, shortening the axial length of the generator, saving materials and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a front view structural schematic diagram of the present invention;

[0018] Figure 2 It is a side structural schematic diagram of the rotary rectifier of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of an existing generator rotor.

[0020] In the figure: 1. shaft; 2. bolts; 3. rotating rectifier module; 4. cold-pressed end; 5. support ring; 6. lead-out wire; 7. exciter rotor core; 8. exciter rotor winding; 9. fixing plate; 10. collector ring; 11. pressure-sensitive module; 12. end face of exciter rotor core; 13. rivet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example, see Figure 1-2The integrated design of the exciter and the rotating rectifier in the generator includes a shaft body 1 and a rotating rectifier, the shaft body 1 is provided with an exciter rotor core 7, and the slots of the exciter rotor core 7 are embedded with an exciter rotor winding 8;

[0023] In this embodiment, the rotary rectifier device is composed of a fixed plate 9, a support ring 5, a collector ring 10, a pressure-sensitive module 11 and a rotary rectifier module 3. The collector ring 10 is mounted on the support ring 5. The fixed plate 9, the pressure-sensitive module 11 and the rotary rectifier module 3 are all fixed to the end face 12 of the exciter rotor core by bolts 2.

[0024] In this embodiment, the lead wire 6 is led out after the coil of the exciter rotor core 7 is welded, and the lead wire 6 is connected to the rotating rectifier module 3 through the cold-pressed terminal 4. The support ring 5 is fixed to the end surface 12 of the exciter rotor core through the rivet 13 and becomes one with the exciter rotor core 7.

[0025] This embodiment integrates the exciter rotor and the rotating rectifier device into an integrated structure. Compared with the original generator, the rectifier hub is removed, the axial length of the generator is shortened, and the space occupancy rate of the generator is reduced, thereby saving materials and reducing costs.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An integrated design of an exciter and a rotating rectifier in a generator, comprising a shaft (1) and a rotating rectifier, characterized in that: The shaft body (1) is provided with an exciter rotor core (7), and an exciter rotor winding (8) is embedded in a slot of the exciter rotor core (7); The rotary rectifying device is composed of a fixing plate (9), a supporting ring (5), a collector ring (10), a pressure-sensitive module (11) and a rotary rectifying module (3), and the collector ring (10) is installed on the supporting ring (5); After the coil of the exciter rotor core (7) is welded, a lead wire (6) is led out, and the lead wire (6) is connected to the rotating rectifier module (3) through a cold-pressed terminal (4), and the support ring (5) is fixed to the end surface (12) of the exciter rotor core through a rivet (13) and becomes one with the exciter rotor core (7).

2. The integrated design of the exciter and the rotating rectifier in the generator according to claim 1 is characterized in that: The fixing plate (9), the pressure-sensitive module (11) and the rotary rectifier module (3) are all fixed to the end surface (12) of the exciter rotor core by means of bolts (2).

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