阅读说明：本技术 一种兼有旋转整流器功能的副励磁机转子结构 (Auxiliary exciter rotor structure with function of rotating rectifier ) 是由 焦保君 杨杰 郭文文 赵明 马晓勇 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种兼有旋转整流器功能的副励磁机转子结构,解决了如何将旋转整流器与副励磁转子集成在一起的问题。包括副励磁机转子铁芯(1)和同步发电机转轴的非驱动端的轴端段(3),非驱动端的轴端段(3)为空心轴,在副励磁机转子铁芯(1)的外侧立面上设置有盘形凹槽(5),在盘形凹槽(5)中分别设置有正极旋转整流模块安装座(6)和负极旋转整流模块安装座(7),在正极旋转整流模块安装座(6)上设置有正极旋转整流模块(8),在负极旋转整流模块安装座(7)上设置有负极旋转整流模块(9),在正极旋转整流模块(8)与负极旋转整流模块(9)之间连接有压敏保护电阻(10)；节省轴向空间,结构简单、紧凑,装配方便。(The invention discloses an auxiliary exciter rotor structure with the function of a rotating rectifier, which solves the problem of how to integrate the rotating rectifier and an auxiliary exciter rotor together. The synchronous generator rotor comprises an auxiliary exciter rotor core (1) and a shaft end section (3) of a non-driving end of a synchronous generator rotating shaft, wherein the shaft end section (3) of the non-driving end is a hollow shaft, a disc-shaped groove (5) is formed in the outer side vertical surface of the auxiliary exciter rotor core (1), a positive rotating rectifying module mounting seat (6) and a negative rotating rectifying module mounting seat (7) are respectively arranged in the disc-shaped groove (5), a positive rotating rectifying module (8) is arranged on the positive rotating rectifying module mounting seat (6), a negative rotating rectifying module (9) is arranged on the negative rotating rectifying module mounting seat (7), and a voltage-sensitive protective resistor (10) is connected between the positive rotating rectifying module (8) and the negative rotating rectifying module (9); the axial space is saved, the structure is simple and compact, and the assembly is convenient.)

1. A vice exciter rotor structure with rotating rectifier function comprises a vice exciter rotor core (1) and a shaft end section (3) of a non-driving end of a synchronous generator rotating shaft, wherein the vice exciter rotor core (1) is installed on the shaft end section (3) of the non-driving end of the synchronous generator rotating shaft, and is characterized in that the shaft end section (3) of the non-driving end is a hollow shaft, a disc-shaped groove (5) is formed in the outer side vertical face of the vice exciter rotor core (1), a positive rotating rectifier module installing seat (6) and a negative rotating rectifier module installing seat (7) are respectively arranged in the disc-shaped groove (5), a positive rotating rectifier module (8) is arranged on the positive rotating rectifier module installing seat (6), a negative rotating rectifier module (9) is arranged on the negative rotating rectifier module installing seat (7), and a pressure-sensitive protective resistor (10) is connected between the positive rotating rectifier module (8) and the negative rotating rectifier module (9) The current lead-in lead-out wire on the positive pole rotating rectifying module (8) and the current lead-in lead-out wire on the negative pole rotating rectifying module (9) are connected in the hollow of the shaft end section (3) in a penetrating mode.

2. The auxiliary exciter rotor structure with the function of a rotating rectifier as claimed in claim 1, characterized in that a magnetic steel (2) and a magnetic steel pressing plate (11) are arranged on the outer circle of the auxiliary exciter rotor core (1), and a pressing plate clamping bolt (12) is arranged between the magnetic steel pressing plate (11) and the auxiliary exciter rotor core (1); a wire feed groove (4) is arranged on the hollow outer circumference of the shaft end section (3).

Technical Field

The invention relates to an auxiliary exciter in a synchronous generator set, in particular to an auxiliary exciter rotor structure with the function of a rotating rectifier.

Background

The existing synchronous generator structure is generally that a three-phase generating winding is arranged on a stator, an exciting winding is arranged on a rotor, an exciter stator is arranged on the inner side vertical surface of an end cover of a non-driving end of a synchronous generator, an auxiliary exciter stator is arranged on an outer cover of a bearing of the non-driving end, and a rotary rectifier, an exciter rotor and an auxiliary exciter rotor are sequentially arranged on a rotating shaft of the non-driving end of a rotor of the synchronous generator, so that the arrangement of the parts can be completed only when a hollow rotating shaft of the synchronous generator has a certain length requirement; the permanent magnet steel is distributed on the auxiliary exciter rotor, when the synchronous generator rotor is driven by the driving end equipment to rotate, the three-phase coil of the auxiliary exciter stator is cut by the magnetic field of the rotor, three-phase alternating current is generated, direct current is rectified by an Automatic Voltage Regulator (AVR) and supplied to the magnetic pole coil of the exciter stator, the magnetic field of the exciter is generated, the three-phase coil of the exciter rotor cuts the magnetic field, three-phase alternating current of an exciter rotor winding is generated, the three-phase alternating current is rectified into direct current by a rotating rectifier and then supplied to the exciting coil on the synchronous generator rotor, and therefore the excitation of the synchronous generator is completed; in the conventional structure, the rotating rectifier is installed between the rotor of the synchronous generator and the rotor of the exciter, and generally occupies an axial distance of about 300 mm, when the synchronous generator is installed in a place with limited space on the site such as a ship, the problem that the axial installation space of the synchronous generator is not enough is often encountered, and how to shorten the axial distance of the synchronous generator becomes a problem to be urgently solved on the site.

The structure of the existing auxiliary exciter is generally split, namely an auxiliary exciter rotor and an auxiliary exciter stator are arranged in a split mode; during assembly, the auxiliary exciter stator is assembled on the outer cover of the bearing at the non-driving end of the motor, the auxiliary exciter rotor is independently installed at the tail end of the shaft end of the non-driving end of the rotating shaft of the synchronous generator, the outward space of the outer side vertical surface of the auxiliary exciter rotor is open, and generally no part can be arranged.

Disclosure of Invention

The invention provides an auxiliary exciter rotor structure with the function of a rotating rectifier, and solves the technical problem of how to integrate the rotating rectifier and an auxiliary exciter rotor together.

The invention solves the technical problems by the following technical scheme:

the general concept of the invention is: the shaft end on the non-driving end side of the synchronous generator rotating shaft is arranged into a hollow shaft form, and the shaft end is arranged in a shaft hole of the hollow shaft: three-phase winding lead-out wires of the exciter rotor, namely three-phase lead-in wires of the rotating rectifier, and connecting wires of exciting coil lead-in wires of the synchronous generator rotor, namely rectified output end lead-out wires of the rotating rectifier; the rotary rectifying module and the protective resistor are arranged on the outer side vertical surface of the rotor of the auxiliary exciter, so that a hub which is arranged on a rotating shaft of the synchronous generator and is provided with the rectifying module in the traditional way is omitted, and the length of the rotating shaft of the synchronous generator is shortened.

A secondary exciter rotor structure with the function of a rotary rectifier comprises a secondary exciter rotor core and a shaft end section of a non-driving end of a synchronous generator rotating shaft, wherein the secondary exciter rotor core is arranged on the shaft end section of the non-driving end of the synchronous generator rotating shaft, the shaft end section of the non-driving end is a hollow shaft, a disc-shaped groove is arranged on the outer vertical surface of the secondary exciter rotor core, a positive rotary rectifying module mounting seat and a negative rotary rectifying module mounting seat are respectively arranged in the disc-shaped groove, a positive rotary rectifying module is arranged on the positive rotary rectifying module mounting seat, a negative rotary rectifying module is arranged on the negative rotary rectifying module mounting seat, a voltage-sensitive protection resistor is connected between the positive rotary rectifying module and the negative rotary rectifying module, a current lead-in wire on the positive rotary rectifying module and a current lead-in wire on the negative rotary rectifying module, is inserted into the hollow of the shaft end section.

A magnetic steel and a magnetic steel pressing plate are arranged on the excircle of the auxiliary exciter rotor core, and a pressing plate clamping bolt is arranged between the magnetic steel pressing plate and the auxiliary exciter rotor core; and a wire passing groove is arranged on the hollow outer circumference of the shaft end section.

The invention realizes that the rotary rectifier and the auxiliary exciter are designed into an integrated nested type, is different from the traditional rotary rectifier installation mode, and has the advantages of light generator design, axial space saving, simple and compact structure, convenient assembly and reference significance for other light generator designs.

Drawings

FIG. 1 is a schematic structural view of the secondary exciter rotor of the present invention;

FIG. 2 is a schematic side view of the secondary exciter rotor of the present invention;

fig. 3 is a schematic structural view of the secondary exciter rotor core 1 of the present invention;

FIG. 4 is a schematic structural view of the stator and rotor of the synchronous generator of the present invention.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

a vice exciter rotor structure with the function of a rotating rectifier comprises a vice exciter rotor core 1 and a non-driving end shaft end section 3 of a rotating shaft of a synchronous generator, wherein the vice exciter rotor core 1 is arranged on the non-driving end shaft end section 3 of the rotating shaft of the synchronous generator, the non-driving end shaft end section 3 is a hollow shaft, a disc-shaped groove 5 is arranged on the outer vertical surface of the vice exciter rotor core 1, a positive rotating rectifying module mounting seat 6 and a negative rotating rectifying module mounting seat 7 are respectively arranged in the disc-shaped groove 5, a positive rotating rectifying module 8 is arranged on the positive rotating rectifying module mounting seat 6, a negative rotating rectifying module 9 is arranged on the negative rotating rectifying module mounting seat 7, a voltage-sensitive protection resistor 10 is connected between the positive rotating rectifying module 8 and the negative rotating rectifying module 9, a current lead-out wire on the positive rotating rectifying module 8 and a current lead-out wire on the negative rotating rectifying module 9, is inserted into the hollow of the shaft end section 3; the positive pole rotating rectifier module 8, the negative pole rotating rectifier module 9 and the voltage dependent protection resistor 10 form an embedded rotating rectifier 18 on a disc-shaped groove 5 arranged on the outer side vertical surface of the auxiliary exciter rotor core 1.

A magnetic steel 2 and a magnetic steel pressing plate 11 are arranged on the excircle of the auxiliary exciter rotor core 1, and a pressing plate clamping bolt 12 is arranged between the magnetic steel pressing plate 11 and the auxiliary exciter rotor core 1; a wire feed groove 4 is provided on the hollow outer circumference of the shaft end section 3.

A synchronous generator capable of shortening axial length comprises a synchronous generator rotating shaft, a synchronous generator excitation rotor 19 is arranged on the synchronous generator rotating shaft, a synchronous generator rotor excitation coil is arranged in the synchronous generator excitation rotor 19, an automatic voltage regulator 21 is arranged on a base provided with a synchronous generator stator 20, an exciter stator 16 is arranged on the inner vertical surface of a synchronous generator non-drive end cover 15, an auxiliary exciter stator 14 is arranged on the outer vertical surface of the synchronous generator non-drive end cover 15, a shaft end section 3 of the non-drive end of the synchronous generator rotating shaft is a hollow shaft, an exciter rotor 17 and an auxiliary exciter rotor 13 are respectively arranged on the shaft end section 3 of the hollow shaft, a disc-shaped groove 5 is arranged on the outer vertical surface of an auxiliary exciter rotor core 1 of the auxiliary exciter rotor 13, a positive pole rotating rectifier module 8 and a negative pole rotating rectifier module 9 are respectively arranged in the disc-shaped groove 5, a voltage-sensitive protection resistor 10 is connected between the positive electrode rotating rectification module 8 and the negative electrode rotating rectification module 9; the outgoing lines of the three-phase windings in the auxiliary exciter stator 14 are connected to the input end of the automatic voltage regulator 21, the output end of the automatic voltage regulator 21 is connected to the exciter pole coil in the exciter stator 16, the outgoing lines of the three-phase coils in the exciter rotor 17 are connected to the input end of the positive rotating rectifier module 8 and the input end of the negative rotating rectifier module 9 after passing through the hollow in the shaft end section 3, and the outgoing lines of the output end of the positive rotating rectifier module 8 and the outgoing lines of the output end of the negative rotating rectifier module 9 are connected to the field coil of the synchronous generator rotor after passing through the hollow in the shaft end section 3.

A positive electrode rotating rectifying module mounting seat 6 and a negative electrode rotating rectifying module mounting seat 7 are respectively arranged in the disc-shaped groove 5, a positive electrode rotating rectifying module 8 is arranged on the positive electrode rotating rectifying module mounting seat 6, and a negative electrode rotating rectifying module 9 is arranged on the negative electrode rotating rectifying module mounting seat 7; a magnetic steel 2 and a magnetic steel pressing plate 11 are arranged on the excircle of the auxiliary exciter rotor core 1, and a pressing plate clamping bolt 12 is arranged between the magnetic steel pressing plate 11 and the auxiliary exciter rotor core 1; a wire feed groove 4 is provided on the hollow outer circumference of the shaft end section 3.