Generator rotor welding joint

Abstract

The utility model relates to a generator rotor welding joint, which is characterized in that a first conductor and a second conductor at the joint of a generator rotor are arranged at an interval, and the joint is connected with the first conductor and the second conductor and comprises at least two joint blocks which are perpendicular to each other; wherein one group of joint blocks covers the butt joint surfaces or the surfaces adjacent to the butt joint surfaces of the first conductor and the second conductor, a welding seam is filled in an area enclosed by the first conductor and the second conductor, and the other group of joint blocks covers the surfaces adjacent to the butt joint surfaces of the first conductor and the second conductor; a fillet weld is filled between the joint block and the non-flush position of the first conductor or the second conductor. Compared with the prior art, the requirements of mechanical strength and conductivity of the generator rotor connecting part are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of generator rotors and relates to a generator rotor welding joint. Background Art

[0002] Currently, most generator rotors on the market use brazing to connect the corresponding joints, which has the following limitations:

[0003] The traditional brazing method for copper winding welding has poor reliability and high welding quality requirements. When the rotor speed is high, the center ring and jumper wires are prone to breakage, causing failures.

[0004] Brazing and adapter joints are more suitable for copper windings, but less suitable for other materials. When the generator rotor uses aluminum windings, the end structure is compact and the welding space is small. The rotor itself is a rotating part, and the weld needs to transmit electrical energy, which places relatively high requirements on the mechanical strength and conductivity of the welding.

[0005] The existing technology uses parallel U-shaped joints to connect the upper and lower coils of the rotor. However, the rotor copper bars in this patent are generally welded horizontally, which makes clamping with the U-shaped joint difficult and prone to slipping. The U-shaped joint also has a small conductive area at the weld seam, which cannot meet the requirements of reliable electrical conductivity.

[0006] Existing technology uses C-type connectors to connect motor rotor end rings and conductor bars. However, this patent is used for welding motor end rings and conductors. The weld is small, weak, and has a small conductive area, which cannot meet the requirements of reliable conductivity.

[0007] The prior art uses a T-type connector to connect the rotor coils. However, the plug-in welding head of the patent generally uses brazing, and this structure generally has low welding strength. Utility Model Content

[0008] The purpose of the present invention is to provide a generator rotor welding joint in order to overcome at least one of the defects of the above-mentioned prior art. The present invention solves the requirements of mechanical strength and conductivity of the generator rotor connection parts.

[0009] The purpose of the utility model can be achieved through the following technical solutions:

[0010] One of the technical solutions of the present utility model is to provide a generator rotor welding joint, in which the first conductor and the second conductor at the generator rotor connection are arranged at intervals, and the joint connects the first conductor and the second conductor, including at least two mutually perpendicular joint blocks, wherein one joint block covers the butt joint surface or the adjacent surface of the butt joint surface of the first conductor and the second conductor, and the area surrounded by the first conductor and the second conductor is filled with a weld, and the other group of joint blocks covers the adjacent surface of the butt joint surface of the first conductor and the second conductor, and the non-flush portion between the joint block and the first conductor or the second conductor is filled with a fillet weld.

[0011] Furthermore, the first conductor and the second conductor are arranged vertically, the narrow side of the first conductor butts against the end face of the second conductor with a distance therebetween, and the joint is an L-shaped joint; the back of the L-shaped joint provides good support when the two butted conductors are connected, and the joint has high strength after welding; at the same time, it provides a large weld connection area, providing reliable conductivity;

[0012] One connector block of the L-shaped connector covers the wide sides of the first conductor and the second conductor, and is flush with the wide sides of the second conductor in the width direction of the conductors. The other connector block covers the end face of the first conductor and the narrow side face of the second conductor, and is spaced apart from the end face of the first conductor and the narrow side face of the second conductor in the thickness direction of the conductors.

[0013] Furthermore, an area enclosed by a joint block of the L-shaped joint, a narrow side surface of the first conductor, and an end surface of the second conductor is filled with an L-shaped first weld.

[0014] Furthermore, an L-shaped second weld is filled between another joint block of the L-shaped joint and the end face of the first conductor and the narrow side face of the second conductor, and the L-shaped second weld is a fillet weld.

[0015] Furthermore, an L-shaped third weld is filled between one joint block of the L-shaped joint and the wide side surface of the second conductor, and the L-shaped third weld is a fillet weld.

[0016] Furthermore, the first conductor and the second conductor are arranged in parallel, and the narrow sides of the first conductor and the second conductor are butted against each other with a distance therebetween. The joint is an H-shaped joint. When the two abutting conductors are connected, the shoulder and the joint provide good support, and the joint has high strength after welding. At the same time, a large weld connection area is provided, thereby providing reliable conductivity.

[0017] One connector block of the H-type connector covers the narrow side of the first conductor and the second conductor, and is flush with the narrow side of the first conductor and the second conductor in the thickness direction of the conductor. The other pair of connector blocks covers the wide side of the first conductor and the second conductor, and is spaced apart from the wide side of the first conductor and the second conductor in the width direction of the conductor.

[0018] Furthermore, the H-shaped joint is staggered with the first conductor and the second conductor, and a distance is left between the end faces of the H-shaped joint and the first conductor and the second conductor in the length direction of the conductor, leaving a larger weld connection area while retaining a good supporting effect.

[0019] Furthermore, the areas surrounded by both sides of one joint block of the H-shaped joint, between another pair of joint blocks, and the end faces of the first conductor and the second conductor are filled with an H-shaped third weld.

[0020] Furthermore, an H-shaped first weld is filled between the other pair of connector blocks of the H-shaped connector and the wide side surface of the first conductor, and the H-shaped first weld is a fillet weld.

[0021] Furthermore, an H-shaped second weld is filled between the other pair of connector blocks of the H-shaped connector and the wide side surface of the second conductor, and the H-shaped second weld is a fillet weld.

[0022] One of the technical solutions of the present invention is to provide a generator rotor welding method, which uses the joint to weld the conductor of the generator rotor, comprising the following steps:

[0023] The first conductor and the second conductor at the connection of the generator rotor are connected by selecting a corresponding joint type according to the conductor arrangement situation, arranged on the joint, and the space between the joint and the conductor is filled with a weld.

[0024] One of the technical solutions of the present invention is to provide an application of a generator rotor welding joint, wherein the joint is applied to the argon arc welding connection of the generator aluminum rotor.

[0025] As a preferred technical solution, argon arc welding is used to fill the space between the joint and the conductor.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The argon arc welding joint proposed in the present invention is used to connect the rotor winding, which can meet the advantages of small space, high welding strength and large conductive area, and solve the requirements of mechanical strength and conductivity of the generator aluminum rotor connection parts;

[0028] (2) The utility model uses argon arc welding and joints to achieve reliable connection of aluminum winding materials, can produce more welds, and has good conductivity and welding strength;

[0029] (3) The connector of the utility model has low cost and can be extruded by a mold, so the mass production efficiency is high;

[0030] (4) The joint of the utility model requires a small welding space and is easy to operate;

[0031] (5) The joint of the utility model can be filled with more solder area, and the conductive area after welding is large, which meets the rotor's requirements for the conductive area of ​​the weld;

[0032] (6) The joint of the utility model has good support for the rotor conductor and high mechanical strength after welding, which meets the requirements for the strength of the welding structure during the rotation of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a first connection structure between a generator rotor welding joint and a rotor conductor in Example 1 of the present utility model;

[0034] Figure 2 This is a schematic diagram of the second connection structure between the generator rotor welding joint and the rotor conductor in Example 1 of the present utility model;

[0035] Figure 3 This is a schematic diagram of the connection structure between the generator rotor welding joint and the rotor conductor in Example 2 of the present utility model.

[0036] Description of the marks in the figure:

[0037] 1—first conductor, 2—second conductor, 3—L-type joint, 4—H-type joint, 5—L-type first weld, 6—L-type second weld, 7—L-type third weld, 8—H-type first weld, 9—H-type second weld, 10—H-type third weld. DETAILED DESCRIPTION

[0038] The present invention is described in detail below with reference to specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., used to describe common objects, only refer to different instances of the same object, and are not intended to imply that the objects described in this way must adopt a given order, whether in time, space, order or any other manner.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] Example:

[0042] A generator rotor weld joint, wherein a first conductor 1 and a second conductor 2 are arranged at intervals at the generator rotor connection point, and the joint connects the first conductor 1 and the second conductor 2, and includes at least two mutually perpendicular joint blocks, wherein one joint block covers the butt joint surface or the adjacent surface of the butt joint surface of the first conductor 1 and the second conductor 2, and the area enclosed by the first conductor 1 and the second conductor 2 is filled with a weld, and another set of joint blocks covers the adjacent surface of the butt joint surface of the first conductor 1 and the second conductor 2, and the non-flush portion between the joint block and the first conductor 1 or the second conductor 2 is filled with a fillet weld.

[0043] The following describes two embodiments according to different conductor arrangements and corresponding connector types.

[0044] Example 1:

[0045] A generator rotor welding joint, such as Figure 1 and Figure 2 As shown, the first conductor 1 and the second conductor 2 are arranged vertically, and the narrow side of the first conductor 1 is butted against the end face of the second conductor 2 with a distance therebetween. The joint is an L-shaped joint 3. The back of the L-shaped joint 3 provides good support when the two butted conductors are connected, and the joint has high strength after welding. At the same time, it provides a large weld connection area, providing reliable conductivity.

[0046] One connector block of the L-shaped connector 3 covers the wide sides of the first conductor 1 and the second conductor 2, and is flush with the wide sides of the second conductor 2 in the width direction of the conductors. The other connector block covers the end face of the first conductor 1 and the narrow side face of the second conductor 2, and is spaced apart from the end face of the first conductor 1 and the narrow side face of the second conductor 2 in the thickness direction of the conductors.

[0047] The area enclosed by one joint block of the L-shaped joint 3, the narrow side surface of the first conductor 1 and the end surface of the second conductor 2 is filled with the L-shaped first weld 5;

[0048] An L-shaped second weld 6 is filled between the other joint block of the L-shaped joint 3 and the end face of the first conductor 1 and the narrow side face of the second conductor 2. The L-shaped second weld 6 is a fillet weld.

[0049] An L-shaped third weld 7 is filled between one joint block of the L-shaped joint 3 and the wide side surface of the second conductor 2 , and the L-shaped third weld 7 is a fillet weld.

[0050] Example 2:

[0051] A generator rotor welding joint, such as Figure 3 As shown, the first conductor 1 and the second conductor 2 are arranged in parallel, and the narrow sides of the first conductor 1 and the second conductor 2 are butted together with a distance therebetween. The joint adopts an H-type joint 4. When the two abutting conductors are connected, the shoulder and the joint provide good support. After welding, the joint has high strength. At the same time, it provides a large weld connection area, providing reliable conductivity.

[0052] One connector block of the H-type connector 4 covers the narrow side of the first conductor 1 and the second conductor 2, and is flush with the narrow side of the first conductor 1 and the second conductor 2 in the thickness direction of the conductors. The other pair of connector blocks covers the wide side of the first conductor 1 and the second conductor 2, and is spaced apart from the wide side of the first conductor 1 and the second conductor 2 in the width direction of the conductors.

[0053] The H-shaped joint 4 is arranged alternately with the first conductor 1 and the second conductor 2. A distance is left between the end faces of the H-shaped joint 4 and the first conductor 1 and the second conductor 2 in the length direction of the conductors, leaving a larger weld connection area while maintaining a good support function.

[0054] The two sides of one joint block of the H-type joint 4, the area between the other pair of joint blocks and the end faces of the first conductor 1 and the second conductor 2 are filled with the H-type third weld 10;

[0055] The H-shaped first weld 8 is filled between the other pair of connector blocks of the H-shaped connector 4 and the wide side of the first conductor 1. The H-shaped first weld 8 is a fillet weld.

[0056] The H-shaped second weld 9 is filled between the other pair of joint blocks of the H-shaped joint 4 and the wide side surface of the second conductor 2. The H-shaped second weld 9 is a fillet weld.

[0057] A generator rotor welding method uses the above-mentioned joint to weld the conductor of the generator rotor, which is used for argon arc welding connection of the generator aluminum rotor. The specific steps are as follows:

[0058] The first conductor 1 and the second conductor 2 at the generator rotor connection are connected by selecting a corresponding joint type according to the conductor arrangement, arranged on the joint, and the space between the joint and the conductor is filled with a weld using argon arc welding.

[0059] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A generator rotor welding joint, characterized in that: The first conductor (1) and the second conductor (2) at the generator rotor connection are arranged at intervals, and the joint connecting the first conductor (1) and the second conductor (2) comprises at least two mutually perpendicular joint blocks, wherein one joint block covers the butt joint surface or the surface adjacent to the butt joint surface of the first conductor (1) and the second conductor (2), and the area surrounded by the first conductor (1) and the second conductor (2) is filled with a weld, and the other group of joint blocks covers the surface adjacent to the butt joint surface of the first conductor (1) and the second conductor (2), and the non-level position between the joint block and the first conductor (1) or the second conductor (2) is filled with a fillet weld.

2. A generator rotor weld joint according to claim 1, characterized in that: The first conductor (1) and the second conductor (2) are arranged vertically, the narrow side surface of the first conductor (1) and the end surface of the second conductor (2) are butted against each other with a distance therebetween, and the joint is an L-shaped joint (3); One connector block of the L-shaped connector (3) covers the wide sides of the first conductor (1) and the second conductor (2), and is flush with the wide side of the second conductor (2) in the width direction of the conductors; the other connector block covers the end face of the first conductor (1) and the narrow side of the second conductor (2), and is spaced apart from the end face of the first conductor (1) and the narrow side of the second conductor (2) in the thickness direction of the conductors.

3. A generator rotor weld joint according to claim 2, characterized in that: An area enclosed by a joint block of the L-shaped joint (3), the narrow side surface of the first conductor (1), and the end surface of the second conductor (2) is filled with an L-shaped first weld (5).

4. The generator rotor weld joint according to claim 2, characterized in that: An L-shaped second weld (6) is filled between the other joint block of the L-shaped joint (3), the end face of the first conductor (1), and the narrow side face of the second conductor (2), and the L-shaped second weld (6) is a fillet weld.

5. The generator rotor weld joint according to claim 2, characterized in that: An L-shaped third weld (7) is filled between a joint block of the L-shaped joint (3) and the wide side surface of the second conductor (2), and the L-shaped third weld (7) is a fillet weld.

6. The generator rotor weld joint according to claim 1, characterized in that: The first conductor (1) and the second conductor (2) are arranged in parallel, the narrow sides of the first conductor (1) and the second conductor (2) are butted against each other with a distance therebetween, and the joint is an H-shaped joint (4); One connector block of the H-shaped connector (4) covers the narrow side surfaces of the first conductor (1) and the second conductor (2), and is flush with the narrow side surfaces of the first conductor (1) and the second conductor (2) in the thickness direction of the conductors; the other pair of connector blocks covers the wide side surfaces of the first conductor (1) and the second conductor (2), and is spaced apart from the wide side surfaces of the first conductor (1) and the second conductor (2) in the width direction of the conductors.

7. The generator rotor weld joint according to claim 6, characterized in that: The H-shaped connector (4) is arranged alternately with the first conductor (1) and the second conductor (2), and a distance is left between the H-shaped connector (4) and the end faces of the first conductor (1) and the second conductor (2) in the length direction of the conductors.

8. The generator rotor weld joint according to claim 7, characterized in that: The areas surrounded by the two sides of one joint block of the H-shaped joint (4), between another pair of joint blocks, and the end faces of the first conductor (1) and the second conductor (2) are filled with an H-shaped third weld (10).

9. The generator rotor weld joint according to claim 6, characterized in that: An H-shaped first weld (8) is filled between the other pair of connector blocks of the H-shaped connector (4) and the wide side surface of the first conductor (1), and the H-shaped first weld (8) is a fillet weld.

10. The generator rotor weld joint according to claim 6, characterized in that: An H-shaped second weld (9) is filled between the other pair of connector blocks of the H-shaped connector (4) and the wide side surface of the second conductor (2), and the H-shaped second weld (9) is a fillet weld.

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