Anti-demagnetization tool for rotor of hybrid excitation synchronous generator

Abstract

The utility model discloses an anti-degaussing tool for a rotor of a hybrid excitation synchronous generator. The anti-degaussing tool comprises an upper surface copper pipe, a middle insulating nylon pipe, a bottom copper pipe, a copper bar, a cylinder, a fixed copper bar and a telescopic copper bar. According to the utility model, the rotor of the hybrid excitation synchronous generator is fixedly placed in the tool, and the current of the upper claw pole of the electric welding machine is guided in the spot welding process to directly pass through the copper bar instead of passing through the lower claw pole, so that the generation of a magnetic field is avoided, and magnets in the rotor are prevented from being demagnetized or magnetized.

Description

Technical Field

[0001] The utility model belongs to the field of anti-demagnetization tooling, and particularly relates to an anti-demagnetization tooling for the rotor of a hybrid excitation synchronous generator. Background Art

[0002] During the spot welding process of the rotor of a conventional hybrid excitation synchronous generator, a large current is required for welding. When the current passes from the upper claw pole to the lower claw pole of the spot welder, a magnetic field will be generated, resulting in demagnetization or magnetization of one of the magnets in the rotor of the hybrid excitation synchronous generator. Therefore, to solve the above problems, the utility model discloses an anti-demagnetization tooling for the rotor of a hybrid excitation synchronous generator to solve the above problems. Content of the Utility Model

[0003] Purpose of the Utility Model: To solve the deficiencies of the prior art, the utility model provides an anti-demagnetization tooling for the rotor of a hybrid excitation synchronous generator.

[0004] Technical Solution: An anti-demagnetization tooling for the rotor of a hybrid excitation synchronous generator, comprising: an upper surface copper tube, an intermediate insulating nylon tube, a bottom copper tube, a copper bar, a cylinder, a fixed copper bar, and a telescopic copper bar;

[0005] The upper surface copper tube, the intermediate insulating nylon tube, and the bottom copper tube are fixedly connected in sequence from top to bottom to form an integrated tooling. A copper bar is fixedly arranged on the side of the integrated tooling to guide the current of the upper claw pole of the electric welding machine directly through the copper bar during the spot welding process; an empty slot is formed inside the integrated tooling, and the empty slot can fixedly place the rotor of the hybrid excitation synchronous generator to be spot welded. A fixed shaft slot is provided at the center of the bottom of the empty slot, and the fixed shaft slot is used to fixedly hold the main shaft of the rotor of the hybrid excitation synchronous generator;

[0006] The upper surface copper tube is provided with a fixed copper bar and a telescopic copper bar, and the fixed copper bar and the telescopic copper bar are used to jointly fix the surface of the rotor of the hybrid excitation synchronous generator; the fixed copper bar is fixed for limiting; the telescopic copper bar can be adjusted in length according to the surface size of the rotor of the hybrid excitation synchronous generator, and the telescopic copper bar is fixedly connected with the cylinder, and the cylinder provides power support for the telescopic movement of the telescopic copper bar;

[0007] The anti-demagnetization tooling for the rotor of the hybrid excitation synchronous generator can fixedly place rotors of different sizes of the hybrid excitation synchronous generator into the tooling, avoid generating a magnetic field during the spot welding process, and prevent the magnets in the rotor from being demagnetized or magnetized.

[0008] As an optimization: There are 2 fixed copper bars.

[0009] As an optimization: There are 4 telescopic copper bars.

[0010] As an optimization: The fixed copper bars and the retractable copper bars are evenly distributed on the upper surface copper tube.

[0011] Beneficial effects: The tooling of the present utility model can fix rotors of hybrid excitation synchronous generators with different sizes into the tooling, and guide the current of the upper claw pole of the electric welding machine directly through the copper bars during the spot welding process, without passing through the lower claw pole, thereby avoiding the generation of a magnetic field and preventing the magnets in the rotor from being demagnetized or magnetized. Description of the Drawings

[0012] Figure 1 is the front view structural schematic diagram of the present utility model;

[0013] Figure 2 is the top view structural schematic diagram of the present utility model;

[0014] Figure 3 is the structural schematic diagram of the upper surface copper tube 1, the middle insulating nylon tube 2 and the bottom copper tube 3 in the present utility model. Detailed Implementation Manner

[0015] Embodiment

[0016] As Figures 1-3 shown, a tooling for preventing demagnetization of a hybrid excitation synchronous generator rotor includes: an upper surface copper tube 1, a middle insulating nylon tube 2, a bottom copper tube 3, a copper bar 4, a cylinder 5, a fixed copper bar 6 and a retractable copper bar 7.

[0017] The upper surface copper tube 1, the middle insulating nylon tube 2 and the bottom copper tube 3 are fixedly connected in sequence from top to bottom to form an integrated tooling. A copper bar 4 is fixedly arranged on the side of the integrated tooling to guide the current of the upper claw pole of the electric welding machine directly through the copper bar 4 during the spot welding process; an empty slot 8 is formed inside the integrated tooling, and a hybrid excitation synchronous generator rotor to be spot welded can be fixedly placed in the empty slot 8. A fixed shaft slot 9 is provided at the center of the bottom of the empty slot 8, and the fixed shaft slot 9 is used to fixedly hold the main shaft of the hybrid excitation synchronous generator rotor.

[0018] Two fixed copper bars 6 and four retractable copper bars 7 are evenly distributed on the upper surface copper tube 1. The fixed copper bars 6 and the retractable copper bars 7 are used to jointly fix the surface of the hybrid excitation synchronous generator rotor; the fixed copper bars 6 are fixed for limiting; the retractable copper bars 7 can be adjusted in length according to the surface size of the hybrid excitation synchronous generator rotor. The retractable copper bars 7 are fixedly connected to the cylinder 5, and the cylinder 5 provides power support for the expansion and contraction of the retractable copper bars 7.

[0019] The tooling of the present utility model can fix rotors of hybrid excitation synchronous generators with different sizes and place them into the tooling. During the spot welding process, it guides the current of the upper claw pole of the electric welding machine to directly pass through the copper bar without passing through the lower claw pole, thereby avoiding the generation of a magnetic field and preventing the magnets in the rotor from being demagnetized or magnetized.

[0020] The above content describes clearly and completely the technical solutions in the embodiments of the present utility model, so that those skilled in the art can better understand the advantages and features of the present utility model, and thus make a clearer definition of the protection scope of the present utility model. The described embodiments of the present utility model are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

Claims

1. A rotor anti-demagnetization tooling for a hybrid-excitation synchronous generator, characterized in that: Including: Upper surface copper tube (1), intermediate insulating nylon tube (2), bottom copper tube (3), copper bar (4), cylinder (5), fixed copper bar (6) and telescopic copper bar (7); The upper surface copper tube (1), intermediate insulating nylon tube (2) and bottom copper tube (3) are fixedly connected in sequence from top to bottom to form an integrated tooling. A copper bar (4) is fixedly arranged on the side of the integrated tooling to guide the current of the upper claw pole of the electric spot welder directly through the copper bar (4) during the spot welding process. An empty groove (8) is formed inside the integrated tooling. The empty groove (8) can fixedly place the rotor of the hybrid excitation synchronous generator that needs to be spot welded. A fixed shaft groove (9) is provided at the center of the bottom of the empty groove (8), and the fixed shaft groove (9) is used to fixedly hold the main shaft of the rotor of the hybrid excitation synchronous generator; The upper surface copper tube (1) is provided with a fixed copper bar (6) and a telescopic copper bar (7). The fixed copper bar (6) and the telescopic copper bar (7) are used to jointly fix the surface of the rotor of the hybrid excitation synchronous generator. The fixed copper bar (6) is fixed for limiting. The telescopic copper bar (7) can be adjusted in length according to the surface size of the rotor of the hybrid excitation synchronous generator. The telescopic copper bar (7) is fixedly connected to the cylinder (5), and the cylinder (5) provides power support for the expansion and contraction of the telescopic copper bar (7); The anti-demagnetization tooling for the rotor of the hybrid excitation synchronous generator can fixedly place rotors of different sizes of the hybrid excitation synchronous generator into the tooling, and avoid generating a magnetic field during the spot welding process, so that the magnets in the rotor will not be demagnetized or magnetized.

2. The rotor anti-demagnetization tooling for the hybrid excitation synchronous generator according to claim 1, characterized in that: There are 2 fixed copper bars (6).

3. The rotor demagnetization prevention and elimination tooling for the hybrid excitation synchronous generator according to claim 1, characterized in that: There are 4 telescopic copper bars (7).

4. The rotor demagnetization prevention and elimination tooling for the hybrid excitation synchronous generator according to any one of claims 1-3, characterized in that: The fixed copper bars (6) and the telescopic copper bars (7) are evenly distributed on the upper surface copper tube (1).

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