Generator rotor main shaft cable installation device

Abstract

The utility model discloses a generator rotor main shaft cable installation device, and aims to solve the problems that a cable on a generator rotor main shaft is complex to install and difficult to maintain and replace. The rotor comprises a rotor main shaft, excitation copper bars, a cable and a fixing assembly. The excitation copper bar is parallel to the axis of the rotor main shaft, the excitation copper bar is parallel to the cable, the cable penetrates through the fixing assembly and can move in the fixing assembly, the fixing assembly is connected with the excitation copper bar, and the fixing assembly is fixedly connected with the rotor main shaft. The excitation copper bar and the cable are fixed on the rotor main shaft through the fixing assembly, so that the stability of the cable on the rotor main shaft is ensured. The cable can move in the fixing assembly and can be directly detached from the fixing assembly, so that the operation process is simplified, the cable laying efficiency is improved, the cable can be easily replaced, the easy maintenance performance is improved, the utilization rate of the generator is improved, and the cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of secondary wiring technology for motor equipment, and in particular to a generator rotor spindle cable installation device. Background Technology

[0002] Hydroelectric generators have complex structures and fluctuating operating conditions, especially the rotor section, which has numerous wiring and components, high safety requirements, and significant on-site construction challenges. When secondary lines (fiber optic cables or electrical cables) need to be laid along the rotor shaft, current methods involve burying the cables under the lead wires or using adhesive to secure them along the excitation lead wires. However, once the cables are damaged, they are almost impossible to replace.

[0003] Hydroelectric generators have a highly complex structure and exhibit diverse operating characteristics. The rotor section, in particular, presents extremely high safety requirements due to its intricate layout of wiring and components, significantly increasing the difficulty of on-site construction. In practice, when secondary wiring (including optical fibers or cables) needs to be laid along the rotor shaft, the common methods are to bury the cables under the lead wires or to glue them along the excitation lead wires. However, these methods are problematic because if the cables are damaged, replacement is difficult or even impossible, leading to equipment downtime or scrapping. Utility Model Content

[0004] The purpose of this invention is to provide a generator rotor spindle cable installation device, which aims to solve the problems of complex cable installation, maintenance and replacement on the generator rotor spindle.

[0005] To solve the above problems, this utility model provides a generator rotor spindle cable installation device, including: a rotor spindle, an excitation copper busbar, a cable, and a fixing assembly;

[0006] The excitation copper busbar is arranged parallel to the axis of the rotor main shaft, the excitation copper busbar is arranged parallel to the cable, the cable passes through the fixing assembly, the cable can move within the fixing assembly, the fixing assembly is connected to the excitation copper busbar, and the fixing assembly is fixedly connected to the rotor main shaft.

[0007] Preferably, the fixing component includes a wire clamp and a preset pipe, the preset pipe is sleeved on the cable, the preset pipe abuts against the excitation copper busbar, and the excitation copper busbar and the preset pipe are fixedly connected to the rotor main shaft through the wire clamp.

[0008] Preferably, the wire clamp has a U-shaped structure, and the wire clamp includes a first side, a second side, and a connecting bottom. The first side and the second side are connected through the connecting bottom. The first side is fixedly connected to the rotor main shaft, the second side is fixedly connected to the rotor main shaft, and the connecting bottom abuts against the excitation copper busbar.

[0009] Preferably, the preset pipe is located on the side of the excitation copper busbar, and the preset pipe is connected to the first side.

[0010] Preferably, the fixing component includes a first groove formed on the rotor spindle, the excitation copper busbar is connected to the first groove, and the cable abuts against the inner side of the excitation copper busbar.

[0011] Preferably, the fixing assembly further includes a second groove formed on the rotor spindle, the second groove being located at the bottom of the first groove and communicating with the first groove, the cable being disposed in the second groove, and the excitation copper busbar being connected to the bottom of the first groove.

[0012] Preferably, the fixing component further includes a second groove and a preset pipe formed on the rotor spindle. The second groove is located at the bottom of the first groove and communicates with the first groove. The preset pipe is disposed in the second groove, sleeved on the cable, and abuts against the inner side of the excitation copper busbar.

[0013] Preferably, the outer side of the excitation copper busbar is flush with the surface of the rotor main shaft.

[0014] Preferably, the rotor spindle is a hollow shaft;

[0015] The excitation copper busbar and the cable are connected to the inner wall of the rotor main shaft via the fixing assembly; and / or,

[0016] The excitation copper busbar and the cable are fixedly connected to the outer wall of the rotor main shaft through the fixing assembly.

[0017] Preferably, the rotor spindle is a solid shaft, and the excitation copper busbar and the cable are fixedly connected to the outer wall of the rotor spindle through the fixing assembly.

[0018] With this configuration, the excitation copper busbar is arranged parallel to the axis of the rotor main shaft. The excitation copper busbar and cables are fixed to the rotor main shaft using a fixing assembly, ensuring that the relative positions of the excitation copper busbar, cables, and rotor main shaft remain constant during generator operation, thus guaranteeing the stability of the cables on the rotor main shaft. By installing the fixing assembly within the rotor main shaft, the cables can move within the assembly. When cable maintenance or replacement is required, the cables can be directly detached from the fixing assembly. When installing new cables, they are simply inserted into the fixing assembly, and then the cables are connected to other generator components. This simplifies the operation process, improves cable laying efficiency, facilitates easy cable replacement, enhances maintainability, and ultimately increases generator utilization and saves costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a generator rotor spindle cable mounting device according to an embodiment of the present invention;

[0020] Figure 2 This is a front view of a generator rotor spindle cable mounting device according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 AA section diagram;

[0022] Figure 4 yes Figure 3 A schematic enlarged view of part B in the middle;

[0023] Figure 5 yes Figure 3 A schematic enlarged view of a portion C in the middle;

[0024] Figure 6 yes Figure 3 A schematic enlarged view of a portion of point D in the diagram;

[0025] Figure 7 This is a top structural schematic diagram of a generator rotor spindle cable mounting device according to another embodiment of the present utility model;

[0026] Figure 8 yes Figure 7 A schematic enlarged view of part E in the middle;

[0027] Figure 9 This is a top structural schematic diagram of a generator rotor spindle cable mounting device according to another embodiment of the present utility model;

[0028] Figure 10 yes Figure 9 A schematic enlarged view of a local part of F.

[0029] Figure label:

[0030] 1. Rotor spindle;

[0031] 2. Excitation copper busbar;

[0032] 3. Cables;

[0033] 4. Fixing component; 41. Wire clamp; 411. First side; 412. Second side; 413. Connecting bottom; 42. Pre-set pipe; 4a. First groove; 4b. Second groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0035] The accompanying drawings show schematic diagrams of layer structures according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0036] In the description of this utility model, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Combination Figure 1This utility model provides a generator rotor main shaft cable installation device, hereinafter referred to as the device, which includes: a rotor main shaft 1, an excitation copper busbar 2, a cable 3, and a fixing component 4; the excitation copper busbar 2 is arranged parallel to the axis of the rotor main shaft 1, the excitation copper busbar 2 is arranged parallel to the cable 3, the cable 3 passes through the fixing component 4, the cable 3 can move within the fixing component 4, the fixing component 4 is connected to the excitation copper busbar 2, and the fixing component 4 is fixedly connected to the rotor main shaft 1. Specifically, the excitation copper busbar 2, as an inherent component in the generator, is usually connected to the rotor main shaft 1. The axes of the excitation copper busbar 2 and the rotor main shaft 1 are set parallel to each other, and a magnetic field is generated through the excitation copper busbar 2. The cable 3 is arranged parallel to the excitation copper busbar 2. The original direction of the excitation copper busbar 2 on the rotor main shaft 1 provides a guiding foundation for the laying path of the cable 3, so that the laying path of the cable 3 on the rotor main shaft 1 is relatively fixed. A certain degree of freedom is reserved between the cable 3 and the fixing component 4. On the one hand, the cable 3 can be directly installed or replaced without disassembling the rotor main shaft 1 and the fixing component 4, which improves the installation and maintenance efficiency. On the other hand, it avoids stress concentration or damage to the cable 3 caused by rigid fixing, thus improving the service life of the cable 3.

[0038] With this configuration, the excitation copper busbar 2 is arranged parallel to the axis of the rotor main shaft 1. The excitation copper busbar 2 and the cable 3 are fixed to the rotor main shaft 1 by the fixing component 4, ensuring that the relative positions of the excitation copper busbar 2, cable 3, and rotor main shaft 1 are fixed during generator operation, and ensuring the stability of the cable 3 on the rotor main shaft 1. By setting the fixing component 4 in the rotor main shaft 1, the cable 3 is designed to move within the fixing component 4. When the cable 3 needs to be repaired or replaced, it can be directly removed from the fixing component 4. When installing a new cable 3, it is simply inserted into the fixing component 4, and then the cable 3 and other components of the generator that need to be connected are installed. This simplifies the operation process, improves the efficiency of cable laying, enables easy replacement of the cable 3, enhances maintenance performance, thereby improving the utilization rate of the generator and saving costs.

[0039] It should be noted that, Figure 1 The diagram only schematically shows the various components of the device, illustrating the approximate positional relationship of the rotor shaft 1 within the generator. Figure 1 The circular structure outside the rotor main shaft 1 is merely a schematic representation of other structures within the generator, such as bearings, frame, and fan. Its main purpose is to demonstrate that after the excitation copper busbar 2 and cable 3 are installed on the rotor main shaft 1, they can pass normally through other structures within the generator and operate stably. It does not constitute a structural limitation on the device in this invention. The specific type of cable is also not limited; it can be optical fiber or electrical cable, and the cable selection can be based on the generator's specific needs.

[0040] The specific method by which the cable 3 can move within the fixing component 4 is not limited, nor is the specific structural form of the fixing component 4 limited. It can be that the relevant fixing components are installed on the rotor main shaft 1 to fix the excitation copper busbar 2. At the same time, the fixing component contains a pipe structure for installing the cable 3 or other structures that can provide space for the cable 3 to move, and the cable 3 is directly laid in the pipe, so that the cable 3 can move within the fixing component 4; or the fixing component 4 is a structure formed directly on the rotor main shaft 1. For example, an installation groove is formed on the rotor main shaft 1, and the excitation copper busbar 2 and the cable 3 are directly installed in the groove, and space is provided for the cable 3 to move within the groove.

[0041] Example 1

[0042] Combination Figures 1 to 4 , Figure 9 and Figure 10 The fixing component 4 includes a wire clamp 41 and a pre-installed conduit 42. The pre-installed conduit 42 is fitted onto the cable 3 and abuts against the excitation copper busbar 2. The excitation copper busbar 2 and the pre-installed conduit 42 are fixedly connected to the rotor main shaft 1 via the wire clamp 41. Specifically, by setting the pre-installed conduit 42 as a laying channel for the cable 3, the pre-installed conduit 42 is installed along the setting direction of the excitation copper busbar 2. That is, the excitation copper busbar 2 provides the installation support foundation for the pre-installed conduit 42, thereby forming the effect that the position of the pre-installed conduit 42 is fixed, while the cable 3 within the pre-installed conduit 42 is movable. With this setting, the pre-installed conduit 42 is responsible for fixing the laying direction and position of the cable 3, while the cable 3 can be freely pulled out within the pre-installed conduit 42. After the pre-installed conduit 42 is installed, the laying of the cable 3 is simple, and the cable 3 can be recycled and replaced, improving installation and maintenance efficiency.

[0043] It should be noted that the specific structure of the wire clamp 41 is not limited here; it is sufficient to fix the excitation copper busbar 2 and the preset pipe 42 to the rotor main shaft 1 using the wire clamp 41. In a preferred embodiment, such as... Figure 4 As shown, the wire clamp 41 has a U-shaped structure and includes a first side 411, a second side 412, and a connecting bottom 413. The first side 411 and the second side 412 are connected by the connecting bottom 413. The first side 411 and the second side 412 are fixedly connected to the rotor main shaft 1, and the connecting bottom 413 abuts against the excitation copper busbar 2. The first side 411 and the second side 412 achieve a fixed connection between the wire clamp 41 and the rotor main shaft 1, and the connecting bottom 413 and the side wall of the rotor main shaft 1 form a closed fixed space. The excitation copper busbar 2 abuts against the connecting bottom 413, thereby fixing its position on the rotor main shaft 1. The specific connection method between the first side 411 and the second side 412 and the rotor main shaft 1 is not limited here; it can be screwed, riveted, or welded, etc.

[0044] In a preferred embodiment, the preset conduit 42 is located on the side of the excitation copper busbar 2, and the preset conduit 42 is connected to the first side 411. Specifically, as shown... Figure 4 and Figure 10 As shown, the pre-set pipe 42 and the excitation copper busbar 2 are arranged side by side with respect to the rotor main shaft 1. At this time, both the excitation copper busbar 2 and the pre-set pipe 42 can abut against the side wall of the rotor main shaft 1, and the pre-set pipe 42 is connected to the first side 411, further improving the fixing strength of the pre-set pipe 42 in the rotor main shaft 1. In addition, the rotor main shaft 1 often adopts a cylindrical structure, and its side wall is usually arc-shaped. The parallel arrangement of the excitation copper busbar 2 and the pre-set pipe 42 makes it easier to fit against the arc-shaped side wall of the rotor main shaft 1, improving the utilization rate of the limited space on the rotor main shaft 1.

[0045] Example 2

[0046] Combination Figures 1 to 3 , Figure 5 The fixing component 4 includes a first groove 4a formed on the rotor main shaft 1, an excitation copper busbar 2 connected to the first groove 4a, and a cable 3 abutting against the inner side of the excitation copper busbar 2. Specifically, Figure 1 As shown, a first groove 4a is provided in the vertical direction of the rotor main shaft 1, and the excitation copper busbar 2 is arranged along the first groove 4a. Figure 5 The cable 3 is set between the excitation copper busbar 2 and the rotor spindle 1. At this time, a preset pipe 42 can be set, which is sleeved on the cable 3. The preset pipe 42 abuts against the inner side of the excitation copper busbar 2, that is, the side near the bottom of the first groove 4a, so as to fix the position of the preset pipe 42. Alternatively, the preset pipe 42 can be not set, and an installation space is formed between the inner side of the excitation copper busbar 2 and the first groove 4a, and the cable 3 is directly laid in the installation space.

[0047] This design allows for the direct formation of the first groove 4a on the rotor spindle 1, facilitating the installation of the excitation copper busbar 2 and the cable 3. No other structures are required, reducing the weight of the rotor spindle 1 and maximizing the use of space. Furthermore, the groove design enables rapid positioning of the cable 3, allowing for quick extraction along the groove's path during installation and maintenance, thus improving work efficiency.

[0048] Example 3

[0049] Combination Figures 1 to 3 , Figure 6The fixing component 4 includes a first groove 4a and a second groove 4b formed on the rotor main shaft 1. The second groove 4b is located at the bottom of the first groove 4a and communicates with the first groove 4a. The cable 3 is disposed in the second groove 4b, and the excitation copper busbar 2 is connected to the first groove 4a. Specifically, the second groove 4b is provided at the bottom of the first groove 4a, and the excitation copper busbar 2 is installed in the first groove 4a, so that the second groove 4b is in a relatively fixed position. The cable 3 is disposed in the second groove 4b, which provides the cable 3 with an installation base and space for movement. The specific positions of the excitation copper busbar 2 and the first groove 4a are not limited here. A gap can be provided between the side of the excitation copper busbar 2 and the bottom of the first groove 4a, or the excitation copper busbar 2 can be directly abutted against the bottom of the first groove 4a. In the preferred case, the excitation copper busbar 2 is connected to the bottom of the first groove 4a to ensure that the cable 3 is only in the second groove 4b, increasing the stability of the cable 3 laying.

[0050] It should be noted that, in an optional configuration, the fixing component 4 further includes a pre-set conduit 42, which is disposed within the second groove 4b, providing space for the cable 3 to be laid and move. In a preferred configuration, the pre-set conduit 42 and the second groove 4b are structurally compatible, i.e., the pre-set conduit 42 is disposed within the second groove 4b. This configuration forms a second groove 4b on the rotor shaft 1 for cable 3 laying, reducing interference from the excitation copper busbar 2 to the cable 3. Simultaneously, it creates space for cable 3 laying between the inner side of the excitation copper busbar 2 and the rotor shaft 1, which helps improve the stability of the cable 3 during operation.

[0051] In the preferred case, such as Figure 5 and Figure 6 As shown, the outer side of the excitation copper busbar 2 is flush with the surface of the rotor main shaft 1. Specifically, after the excitation copper busbar 2 is installed in the first groove 4a, the surface of the rotor main shaft 1 has no protrusions and a smooth transition, with the cable 3 hidden inside the excitation copper busbar 2. This arrangement improves the flatness of the rotor main shaft 1 surface, reduces the impact on the rotation of the rotor main shaft 1, and improves energy efficiency. At the same time, the smooth transition of the rotor main shaft 1 surface can effectively avoid interference with other structures during rotation, reduce wear, and enhance the safety of the overall structure.

[0052] It should be noted that the specific structural form of the rotor main shaft 1 is not limited here. In common generator structures, the rotor main shaft 1 can be a hollow shaft or a solid shaft, as long as the excitation copper busbar 2 and the cable 3 can be fixed on the rotor main shaft 1.

[0053] In optional cases, such as Figure 9 and 10As shown, when the rotor main shaft 1 is a hollow shaft, the excitation copper busbar 2 and the cable 3 are connected to the inner wall of the rotor main shaft 1 through the fixing assembly 4. That is, the excitation copper busbar 2 and the cable 3 are set on the hollow inner wall of the rotor main shaft 1. The specific fixing method can be the aforementioned method using the wire clamp 41 or forming a groove on the inner wall of the rotor main shaft 1, which will not be elaborated here. It should be noted that when the rotor main shaft 1 is a hollow shaft, the excitation copper busbar 2 and the cable 3 can also be fixedly connected to the outer wall of the rotor main shaft 1 through the fixing assembly 4; for example... Figure 1 As shown, when multiple sets of excitation copper busbars 2 and cables 3 need to be laid, they can also be combined and set on the inner and outer sides of the hollow rotor spindle 1, which can meet the requirements of normal operation of rotor spindle 1 and cable 3 laying.

[0054] In another alternative scenario, such as Figure 7 and Figure 8 As shown, the rotor main shaft 1 is a solid shaft, and the excitation copper busbar 2 and the cable 3 are fixedly connected to the outer wall of the rotor main shaft 1 through the fixing assembly 4. The specific fixing method can be the aforementioned method using the wire clamp 41 or forming a groove on the inner wall of the rotor main shaft 1, which will not be elaborated here. It should be noted that when the excitation copper busbar 2 and the cable 3 are fixed to the outer wall of the rotor main shaft 1, the wire clamp 41 can also be used. In this case, the excitation copper busbar 2 and the cable 3 are located outside the rotor main shaft 1, passing through other structures in the motor and rotating together or relative to other structures in the motor.

[0055] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A generator rotor spindle cable mounting device, characterized in that, The generator rotor spindle cable mounting device includes: rotor spindle (1), excitation copper busbar (2), cable (3) and fixing assembly (4); The excitation copper busbar (2) is arranged parallel to the axis of the rotor main shaft (1). The excitation copper busbar (2) is arranged parallel to the cable (3). The cable (3) passes through the fixing component (4). The cable (3) can move within the fixing component (4). The fixing component (4) is connected to the excitation copper busbar (2). The fixing component (4) is fixedly connected to the rotor main shaft (1).

2. The generator rotor spindle cable mounting device according to claim 1, characterized in that, The fixing component (4) includes a wire clamp (41) and a preset pipe (42). The preset pipe (42) is sleeved on the cable (3). The preset pipe (42) abuts against the excitation copper busbar (2). The excitation copper busbar (2) and the preset pipe (42) are fixedly connected to the rotor spindle (1) through the wire clamp (41).

3. The generator rotor spindle cable mounting device according to claim 2, characterized in that, The wire clamp (41) has a U-shaped structure. The wire clamp (41) includes a first side (411), a second side (412), and a connecting bottom (413). The first side (411) and the second side (412) are connected through the connecting bottom (413). The first side (411) is fixedly connected to the rotor main shaft (1), the second side (412) is fixedly connected to the rotor main shaft (1), and the connecting bottom (413) abuts against the excitation copper busbar (2).

4. The generator rotor spindle cable mounting device according to claim 3, characterized in that, The preset pipe (42) is located on the side of the excitation copper busbar (2), and the preset pipe (42) is connected to the first side (411).

5. The generator rotor spindle cable mounting device according to claim 1, characterized in that, The fixing component (4) includes a first groove (4a) formed on the rotor spindle (1), the excitation copper busbar (2) is connected to the first groove (4a), and the cable (3) abuts against the inner side of the excitation copper busbar (2).

6. The generator rotor spindle cable mounting device according to claim 5, characterized in that, The fixing component (4) further includes a second groove (4b) formed on the rotor spindle (1), the second groove (4b) being located at the bottom of the first groove (4a), the second groove (4b) communicating with the first groove (4a), the cable (3) being disposed in the second groove (4b), and the excitation copper busbar (2) being connected to the bottom of the first groove (4a).

7. The generator rotor spindle cable mounting device according to claim 5, characterized in that, The fixing component (4) further includes a second groove (4b) and a preset pipe (42) formed on the rotor spindle (1). The second groove (4b) is located at the bottom of the first groove (4a) and communicates with the first groove (4a). The preset pipe (42) is disposed in the second groove (4b) and is sleeved on the cable (3). The preset pipe (42) abuts against the inner side of the excitation copper busbar (2).

8. The generator rotor spindle cable mounting device according to claim 7, characterized in that, The outer side of the excitation copper busbar (2) is flush with the surface of the rotor main shaft (1).

9. The generator rotor spindle cable mounting device according to any one of claims 1-8, characterized in that, The rotor main shaft (1) is a hollow shaft; The excitation copper busbar (2) and the cable (3) are connected to the inner wall of the rotor main shaft (1) via the fixing assembly (4); and / or, The excitation copper busbar (2) and the cable (3) are fixedly connected to the outer wall of the rotor spindle (1) through the fixing assembly (4).

10. The generator rotor spindle cable mounting device according to any one of claims 1-8, characterized in that, The rotor spindle (1) is a solid shaft, and the excitation copper busbar (2) and the cable (3) are fixedly connected to the outer wall of the rotor spindle (1) through the fixing assembly (4).

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