Aero three-phase generator rotor structure

Abstract

The application provides an aviation three-stage generator rotor structure, which comprises a main rotor, a rotor shaft, an excitation rotor and a secondary excitation rotor; the main rotor, the excitation rotor and the secondary excitation rotor are all installed on the rotor shaft, the excitation rotor is located on one side of the main rotor, the secondary excitation rotor is located in the interior of the excitation rotor, and a fan is arranged on the other side of the main rotor; the excitation rotor is connected with the rotor shaft through an excitation rotor support, and an excitation rotor armature is sleeved on the excitation rotor support; and the excitation rotor is installed on the outer circle of the excitation rotor support. The application improves the power density of the generator, optimizes the axial space of the three-stage generator rotor, makes the axial length of the generator more compact, meets the specific space requirement, has a large dynamic balance adjustment amount for the high-power three-stage generator rotor, adopts a screw to fix a dynamic balance adjustment block, and can effectively solve the problem, directly fixes a rotary diode on the excitation rotor support, optimizes the connection mode of the rotary diode, and improves the reliability.

Description

Technical Field

[0001] This invention relates to a rotor structure for an aircraft three-stage generator, belonging to the technical field of aircraft three-stage generators. Background Technology

[0002] With the continuous upgrading of aerospace weapons and equipment, the requirements for reliability, maintainability and operability of various spacecraft are becoming increasingly stringent, and multi-electric / all-electric systems have become the mainstream trend in the development of spacecraft power systems.

[0003] Three-stage power generation systems for aircraft have significant advantages in terms of reliability, power-to-weight ratio, and power quality. Therefore, three-stage power generation systems have gradually become the mainstream development trend of aircraft main power systems. However, they have problems such as large generator weight, low power-to-weight ratio, and insufficient installation space. In addition, the main generator rotor rotating diode assembly has a complex structure, making lead wires difficult to connect and rotor dynamic balance adjustment difficult. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an aircraft three-stage generator rotor structure.

[0005] The present invention is achieved through the following technical solutions.

[0006] This invention provides a rotor structure for an aerospace three-stage generator, comprising a main rotor, a rotor shaft, an excitation rotor, and an auxiliary excitation rotor. The main rotor, excitation rotor, and auxiliary excitation rotor are all mounted on the rotor shaft. The excitation rotor is located on one side of the main rotor, and the auxiliary excitation rotor is located inside the excitation rotor. A fan is provided on the other side of the main rotor. The excitation rotor is connected to the rotor shaft via an excitation rotor bracket, and an excitation rotor armature is sleeved on the excitation rotor bracket. The excitation rotor is mounted on the outer circumference of the excitation rotor bracket. The auxiliary excitation rotor is mounted inside the excitation rotor bracket. The auxiliary excitation rotor and the excitation rotor... The support is fixed to the rotor shaft with a flat key. An auxiliary excitation stator is also provided between the auxiliary excitation rotor and the excitation rotor support. One end of the excitation rotor support is a circular ring structure, and the other end is a dynamic balance adjustment groove. A rotating diode is provided inside the circular ring structure. The output neutral line of the excitation rotor armature is fixed to the excitation rotor support through threaded posts and insulating pads, and led out to the main rotor. The six-phase output lines of the excitation rotor armature are connected to the rotating diodes. The six-phase lines of the excitation rotor are insulated from the excitation rotor support using insulating tubes. The six-phase lines of the excitation rotor are connected to the end pins of the rotating diodes by welding.

[0007] The main rotor is driven by multiple protrusions on the rotor shaft, and is limited at one end of the main rotor axis by a stop on the rotor shaft, and at the other end by screws and retaining rings.

[0008] The rotor shaft, excitation rotor, and excitation rotor support are all hollow structures. The fan is a centrifugal fan. The rotor shaft is provided with a stop for fixing the excitation rotor support.

[0009] The excitation rotor armature of the excitation rotor is fixedly connected to the excitation rotor support via a second flat key on the excitation rotor support; the auxiliary excitation rotor and the excitation rotor support share a first flat key and are fixed on the rotor shaft for transmission.

[0010] The dynamic balancing adjustment slot is equipped with a dynamic balancing adjustment block, which is connected to the dynamic balancing adjustment slot by screws. Both the dynamic balancing adjustment slot and the dynamic balancing adjustment block are inverted trapezoidal structures. The dynamic balancing adjustment slot is distributed along the circumference of the excitation rotor support, and an adjustment block inlet is provided on the dynamic balancing adjustment slot.

[0011] The auxiliary excitation rotor uses a retaining ring to make an interference fit with the rotor shaft, and the excitation rotor bracket and the auxiliary excitation rotor are axially fixed together.

[0012] The circular structure and dynamic balance adjustment groove are integrated with the excitation rotor support, and the rotating diode and the excitation rotor support form a six-phase half-wave rectifier bridge structure.

[0013] One end of the fan is provided with a dynamic balance adjustment groove, and the rotating diode is connected to the excitation rotor bracket by fasteners.

[0014] The excitation rotor armature is mounted on the outer circumference of the excitation rotor support and is connected to the excitation rotor support via a flat key.

[0015] The rotating diode is directly fixed on the ring of the excitation rotor support. The AC power output from the excitation rotor armature is rectified by the rotating diode, collected on the excitation rotor support, and then led out through the lead wire to excite the main rotor.

[0016] The beneficial effects of this invention are as follows: it increases the power density of the generator, optimizes the axial space of the three-stage generator rotor, making the axial length of the generator more compact and meeting specific space requirements; the dynamic balance adjustment range of the high-power three-stage generator rotor is large, and the use of screws to fix the dynamic balance adjustment block can effectively solve this problem; the rotating diode is directly fixed on the excitation rotor support, optimizing the connection method of the rotating diode and improving reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the excitation rotor of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the excitation rotor and rotating diode of the present invention;

[0020] Figure 4 This is a schematic diagram of the fan structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the dynamic balancing adjustment groove of the present invention;

[0022] Figure 6 This is a schematic diagram of the fan blade structure of the present invention;

[0023] In the diagram: 1-Main rotor, 2-Rotor shaft, 3-Excitation rotor, 4-Auxiliary excitation rotor, 5-Retaining ring, 6-First flat key, 7-Fan, 8-Excitation rotor bracket, 9-Main rotor excitation "-", 10-Main rotor excitation "+", 11-Rotating diode, 12-Leading neutral line, 13-Excitation rotor armature, 14-Second flat key, 15-Insulating pad, 16-Screw, 17-Copper pipe, 18-Insulating pipe, 19-"-"Leading point, 20-"+" Leading point, 21-Excitation rotor neutral line, 22-Excitation rotor six-phase line, 23-Fastener, 24-Dynamic balance adjustment slot, 25-Adjustment block inlet, 26-Dynamic balance adjustment block, 27-Fan blade. Detailed Implementation

[0024] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0025] like Figures 1-6 As shown, a rotor structure for an aviation three-stage generator includes a main rotor 1, a rotor shaft 2, an excitation rotor 3, and an auxiliary excitation rotor 4. The main rotor 1, excitation rotor 3, and auxiliary excitation rotor 4 are all mounted on the rotor shaft 2. The excitation rotor 3 is located on one side of the main rotor 1, and the auxiliary excitation rotor 4 is located inside the excitation rotor 3. A fan 7 is provided on the other side of the main rotor 1. The excitation rotor 3 is connected to the rotor shaft 2 via an excitation rotor bracket 8, and an excitation rotor armature is sleeved on the excitation rotor bracket 8. The excitation rotor 3 is mounted on the outer circumference of the excitation rotor bracket 8, and the auxiliary excitation rotor 4 is mounted inside the excitation rotor bracket 8. An auxiliary excitation stator is also provided between the excitation rotor support 8 and the excitation rotor support 8; one end of the excitation rotor support 8 is a circular ring structure, and the other end is a dynamic balance adjustment groove 24. A rotating diode 11 is provided inside the circular ring structure; the excitation rotor centerline 21 of the excitation rotor armature is fixed to the excitation rotor support 8 by threaded post and insulating pad 15 for insulation treatment; the excitation rotor six-phase wires 22 of the excitation rotor armature pass through the excitation rotor support and are connected to the pins of the rotating diode; the excitation rotor six-phase wires 22 and the excitation rotor support are insulated by an insulating tube; the excitation rotor six-phase wires 22 and the end pins of the rotating diode 11 are connected by welding.

[0026] The main rotor 1 is driven by multiple protrusions on the rotor shaft 2, and is limited at one end of the main rotor 1 by a stop on the rotor shaft 2, and at the other end by a screw 16 and a retaining ring 5.

[0027] Specifically, the protrusion is used for cooling fan 7.

[0028] The rotor shaft 2, excitation rotor 3 and excitation rotor support 8 are all hollow structures, the fan 7 is a centrifugal fan, and the rotor shaft 2 is provided with a stop for fixing the excitation rotor support 8.

[0029] The excitation rotor armature 13 of the excitation rotor 3 is fixedly connected to the excitation rotor support 8 via the second flat key 14 on the excitation rotor support 8, and the auxiliary excitation rotor 4 shares a first flat key 6 for transmission with the excitation rotor support 8.

[0030] The dynamic balance adjustment groove 24 is provided with a dynamic balance adjustment block 26. The dynamic balance adjustment block 26 is connected to the dynamic balance adjustment groove 24 by screws 16. Both the dynamic balance adjustment groove 24 and the dynamic balance adjustment block 26 are inverted trapezoidal structures. The dynamic balance adjustment groove 24 is distributed along the circumference of the excitation rotor support 8. An adjustment block inlet 25 is provided on the dynamic balance adjustment groove 24.

[0031] Furthermore, the dynamic balance adjustment block 26 is assembled into the dynamic balance adjustment groove 24 through the adjustment block inlet 25. The fan 7 is also designed with a dynamic balance adjustment groove 24, the structure of which is the same as the structure of the dynamic balance adjustment groove 24 of the excitation rotor support 8.

[0032] Furthermore, when adjusting the dynamic balance of the main rotor 1, the dynamic balance adjustment block 26 is inserted into the dynamic balance adjustment groove 24 from the adjustment block inlet 25, moved along the circumference to the position to be adjusted, and the screw 16 is screwed into the threaded hole of the dynamic balance adjustment block 26 until the dynamic balance adjustment block 26 is completely attached to the end face of the dynamic balance adjustment groove 24.

[0033] The auxiliary excitation rotor 4 is interference-fitted with the rotor shaft 2 using a retaining ring 5, and the excitation rotor bracket 8 and the auxiliary excitation rotor 4 are axially fixed together.

[0034] The annular structure and dynamic balance adjustment groove 24 are integrated with the excitation rotor support 8, and the rotating diode 11 and the excitation rotor support 8 form a six-phase half-wave rectifier bridge structure.

[0035] Specifically, the circular ring structure acts as a collector ring. The alternating current generated by the motor is rectified, and after being collected by the circular ring structure, it is led out to the main rotor 1 by the lead wire 9.

[0036] One end of the fan 7 is provided with a dynamic balance adjustment groove 24 to optimize dynamic balance, and the rotating diode 11 is connected to the excitation rotor bracket 8 through fastener 23.

[0037] The excitation rotor armature is mounted on the outer circle of the excitation rotor support 8 and connected to the excitation rotor support 8 via a flat key 6, making full use of the effective weight of the auxiliary excitation rotor 4.

[0038] The fastener 23 consists of a nut and a washer, with the washer used to prevent loosening.

[0039] Preferably, the rotating diode 11 is radially mounted on the excitation rotor support 8, and the circular ring structure serves as a collector ring. After the current rectified by the rotating diode 11 is collected, it is led out to the main rotor 1 through the main rotor excitation "-" 9 to excite it; the excitation rotor centerline 21 and the main rotor excitation "+" 10 are led out to the main rotor 1 to excite it.

[0040] Specifically, by placing the auxiliary excitation rotor 4 inside the excitation rotor 3, the length of the generator rotor shaft 2 is greatly shortened, solving the problem of excessive axial length and insufficient installation space in high-power three-stage generators.

[0041] Specifically, by fixing the rotating diode 11 to the excitation rotor bracket 8 and using a half-bridge rectification method, the six-phase AC power output from the excitation rotor 3 is rectified and then collected on the excitation rotor bracket 8 as the excitation negative pole of the main rotor 1 (main rotor excitation "-" 9) to excite the main rotor 1. At the same time, the excitation rotor neutral line 21 is fixed by screw 16 and led out to the main rotor 1 as the excitation positive pole (main rotor excitation "+" 10), thus solving the problem of difficult excitation rotor rectifier lead structure.

[0042] Specifically, by setting dynamic balancing on the excitation rotor support 8 and the rear fan 7, the dynamic balance of the rotor is adjusted. At the same time, a trapezoidal threaded dynamic balancing adjustment block 26 structure is designed to solve the problem of dynamic balance adjustment of the rotor of a high-power three-stage generator.

[0043] In summary, the main rotor 1 and the excitation rotor 3 are arranged axially, and the auxiliary excitation rotor 4 is located inside the excitation rotor 3, optimizing the space along the rotor axis 2. The excitation rotor support 8 is fitted with the excitation rotor armature, making full use of the effective weight of the auxiliary excitation rotor 4. The excitation rotor support 8 is designed with an integrated circular ring structure as a collector ring, and the rotating diode 11 is directly mounted on the circular ring structure. The AC power generated by the excitation motor 3 is rectified and then fed to the rotor excitation 3 through the circular ring structure. The end of the excitation rotor support 8 is provided with a dynamic balance adjustment groove 24 for adjusting the rotor dynamic balance. The fan 7 is a centrifugal fan, and the dynamic balance adjustment groove 24 is designed on the outer circle of the fan 7 to optimize the dynamic balance.

Claims

1. A rotor structure for an aviation three-stage generator, comprising a main rotor (1), a rotor shaft (2), an excitation rotor (3), and an auxiliary excitation rotor (4), wherein the main rotor (1), the excitation rotor (3), and the auxiliary excitation rotor (4) are all mounted on the rotor shaft (2), the excitation rotor (3) is located on one side of the main rotor (1), the auxiliary excitation rotor (4) is located inside the excitation rotor (3), and a fan (7) is provided on the other side of the main rotor (1), characterized in that: The excitation rotor (3) is connected to the rotor shaft (2) via the excitation rotor bracket (8), and the excitation rotor bracket (8) is fitted with an excitation rotor armature; the excitation rotor (3) is mounted on the outer circle of the excitation rotor bracket (8); the auxiliary excitation rotor (4) is mounted inside the excitation rotor bracket (8); the auxiliary excitation rotor (4) and the excitation rotor bracket (8) are fixed to the rotor shaft (2) by a flat key, and an auxiliary excitation stator is also provided between the auxiliary excitation rotor (4) and the excitation rotor bracket (8); one end of the excitation rotor bracket (8) is set as an annular joint. The structure has a dynamic balance adjustment groove (24) at one end and a rotating diode (11) inside the annular structure. The output center line (21) of the excitation rotor armature is fixed on the excitation rotor support (8) by threaded post and insulating pad (15) and led out to the main rotor (1). The six-phase output line (22) of the excitation rotor armature is connected to the rotating diode (11). The six-phase output line (22) is insulated from the excitation rotor support (8) by insulating tube (18). The end pins of the six-phase output line (22) and the rotating diode (11) are connected by welding.

2. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The main rotor (1) is driven by multiple protrusions on the rotor shaft (2), and is limited at one end of the main rotor (1) by the stop on the rotor shaft (2) and at the other end by the screw (16) and the retaining ring (5).

3. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The rotor shaft (2), excitation rotor (3) and excitation rotor support (8) are all hollow structures. The fan (7) is a centrifugal fan. The rotor shaft (2) is provided with a stop for fixing the excitation rotor support (8).

4. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The excitation rotor armature (13) of the excitation rotor (3) is fixedly connected to the excitation rotor support (8) via the second flat key (14) on the excitation rotor support (8), and the auxiliary excitation rotor (4) shares a first flat key (6) for transmission with the excitation rotor support (8).

5. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The dynamic balance adjustment groove (24) is provided with a dynamic balance adjustment block (26), which is connected to the dynamic balance adjustment groove (24) by screws (16). Both the dynamic balance adjustment groove (24) and the dynamic balance adjustment block (26) are inverted trapezoidal structures. The dynamic balance adjustment groove (24) is distributed along the circumference of the excitation rotor support (8), and an adjustment block inlet (25) is provided on the dynamic balance adjustment groove (24).

6. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The auxiliary excitation rotor (4) is press-fitted with the rotor shaft (2) using a retaining ring (5), and the excitation rotor bracket (8) and the auxiliary excitation rotor (4) are axially fixed together.

7. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The circular structure and dynamic balance adjustment groove (24) are integrated with the excitation rotor support (8), and the rotating diode (11) and the excitation rotor support (8) form a six-phase half-wave rectifier bridge structure.

8. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: One end of the fan (7) is provided with a dynamic balance adjustment groove (24), and the rotating diode (11) is connected to the excitation rotor bracket (8) through fasteners (23).

9. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The excitation rotor armature is mounted on the outer circle of the excitation rotor bracket (8) and is connected to the excitation rotor bracket (8) via a flat key (14).

10. The rotor structure of the three-stage aerospace generator as described in claim 1, characterized in that: The rotating diode (11) is directly fixed on the ring of the excitation rotor support (8). The AC power output from the excitation rotor armature (13) is rectified by the rotating diode (11) and then collected on the excitation rotor support (8), and then led out through the lead wire (9) to excite the main rotor (1).

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