Moisture-absorbing high-voltage current collector ring

Abstract

The utility model relates to high -voltage current collecting ring technical field discloses a kind of hygroscopic high-voltage current collecting ring, including bottom plate, the bottom plate side wall is fixedly connected with multiple first conical expansion sleeve and second conical expansion sleeve, the first conical expansion sleeve and second conical expansion sleeve side wall are all provided with insulating rod assembly;The insulating rod assembly includes full insulation conducting ring connecting rod and full insulation brush holder connecting rod, and the full insulation conducting ring connecting rod and full insulation brush holder connecting rod one end are all fixedly connected in the inside of first conical expansion sleeve and second conical expansion sleeve.In the utility model, by using the full insulation conducting ring connecting rod and full insulation brush holder connecting rod of full insulation material for conducting electricity, the insulation grade is improved, the voltage-withstanding capability is enhanced, the design that traditional metal rod is used as core material, surface is coated with insulating layer, however, this structure exists in high-voltage application The risk of creeping and breakdown, improve the practical stability of high-voltage current collecting ring.

Description

Technical Field

[0001] This utility model relates to the field of high voltage slip ring technology, and in particular to a moisture-absorbing high voltage slip ring. Background Technology

[0002] High-voltage slip rings are key components in power transmission, wind power generation, and industrial equipment, used to transmit electrical energy, signals, or data between rotating and stationary parts. As modern industry develops towards higher voltage, higher current, and higher reliability, the research and optimization of high-voltage slip rings has become an important issue. High-end slip rings have long relied on imports, and China urgently needs breakthroughs in independent technology. The research background of high-voltage slip rings stems from the urgent need for highly reliable rotating transmission systems in fields such as new energy and industrial upgrading. The core challenges lie in solving the problems of high-voltage insulation, contact reliability, and multi-physics field synergistic optimization.

[0003] High-voltage slip rings typically use a metal core as the conductive component, with an insulating layer covering its surface for electrical isolation. For example, some designs use copper or stainless steel as the support rods for the conductive ring and brush holder, with the outer layer covered by injection molding or coating processes using polymer insulating materials such as epoxy resin or polyimide. Furthermore, some solutions employ segmented insulation structures or increase creepage distances to enhance withstand voltage. Regarding moisture protection, existing technologies mostly rely on sealed housings or desiccants to reduce the effects of moisture, but these methods are structurally complex and have high maintenance costs.

[0004] However, existing technologies have significant problems: the design of covering the surface of the metal core with an insulating layer still poses risks of creepage and breakdown in high-voltage applications. Due to the difference in the expansion coefficients of metal and insulating materials, long-term operation can lead to cracking or peeling of the insulation layer, which in turn forms a discharge channel, reducing the insulation level and withstand voltage of the slip ring, and in severe cases, even causing equipment failure. To address these issues, a moisture-absorbing high-voltage slip ring is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a moisture-absorbing high-voltage current collector ring, which aims to improve the design of traditional metal rods as core materials with an insulating layer on the surface in the prior art. However, this structure has problems of creepage and breakdown in high-voltage applications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A moisture-absorbing high-voltage current collector ring includes a base plate, and a plurality of first conical expansion sleeves and second conical expansion sleeves are fixedly connected to the side wall of the base plate. The side walls of the first conical expansion sleeves and the second conical expansion sleeves are provided with insulating rod assemblies.

[0008] The insulating rod assembly includes a fully insulated conductive ring connecting rod and a fully insulated brush holder connecting rod. One end of both the fully insulated conductive ring connecting rod and the fully insulated brush holder connecting rod is fixedly connected inside the first conical expansion sleeve and the second conical expansion sleeve. Multiple conductive sleeves are fixedly connected to the outer wall of the fully insulated conductive ring connecting rod. Insulating baffles are fixedly connected to both sides of each conductive sleeve. An insulating bolt is fixedly connected to one end of the fully insulated conductive ring connecting rod.

[0009] As a further description of the above technical solution:

[0010] The outer walls of the fully insulated conductive ring connecting rod and the fully insulated brush holder connecting rod are both located on the inner wall of the cylinder, and the outer wall of the conductive sleeve is located on the inner wall of the cylinder.

[0011] As a further description of the above technical solution:

[0012] A cylinder is fixedly connected to the outer wall of the base plate, and a moisture-absorbing box bracket is fixedly connected to the outer wall of the cylinder.

[0013] As a further description of the above technical solution:

[0014] The moisture-absorbing box bracket is fixedly connected to a moisture-absorbing shell on its side wall. The moisture-absorbing shell is filled with moisture-absorbing particles, which are used to absorb moisture.

[0015] As a further description of the above technical solution:

[0016] A sealing gasket is fixedly connected to the side wall of the moisture-absorbing particle, and the sealing gasket side wall is fixedly connected to the side wall of the moisture-absorbing box bracket.

[0017] As a further description of the above technical solution:

[0018] A vent pipe is fixedly connected to the side wall of the moisture-absorbing granules, and the other end of the vent pipe is fixedly connected to the outer wall of the cylinder.

[0019] As a further description of the above technical solution:

[0020] A vent valve is fixedly connected inside the moisture-absorbing shell. The other end of the vent valve is located on the side wall of the moisture-absorbing particles, and the other end of the vent valve is located on the outer wall of the moisture-absorbing shell.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by using fully insulated conductive ring connecting rods and fully insulated brush holder connecting rods made of fully insulated materials for conduction, the insulation level is improved and the withstand voltage is enhanced. This solves the problem of the traditional design of using metal rods as core materials with an insulating layer on the surface. However, this structure has the risk of creepage and breakdown in high-voltage applications, thus improving the practical stability of the high-voltage slip ring.

[0023] 2. In this utility model, the air pressure inside the cylinder is greater than that outside the cylinder. The gas flows from inside the cylinder to the outside, passes through the vent pipe, and then enters from below the moisture-absorbing particles through the small hole below the moisture-absorbing shell. After absorbing moisture through the moisture-absorbing particles, it is exhaled through the vent valve, which greatly reduces the humidity inside the cylinder, improves the insulation characteristics of the insulating components, and solves the problem that condensation easily forms inside the slip ring under high humidity and large temperature difference conditions, which leads to a decrease in insulation performance. This improves the insulation performance of the high voltage slip ring. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a moisture-absorbing high-voltage slip ring proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the outer wall structure of the cylinder of a moisture-absorbing high-voltage current collector ring proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the moisture-absorbing particle structure of a moisture-absorbing high-voltage slip ring proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the outer wall structure of the cylinder of a moisture-absorbing high-voltage current collector ring proposed in this utility model.

[0028] Legend:

[0029] 1. Base plate; 2. First conical expansion sleeve; 3. Fully insulated conductive ring connecting rod; 4. Fully insulated brush holder connecting rod; 5. Insulating bolt; 6. Second conical expansion sleeve; 7. Moisture-absorbing shell; 8. Conductive sleeve; 9. Insulating baffle; 10. Cylinder; 11. Moisture-absorbing box bracket; 12. Vent pipe; 13. Vent valve; 14. Moisture-absorbing particles; 15. Sealing gasket. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1An embodiment of this utility model provides a moisture-absorbing high-voltage current collector ring, including a base plate 1. Multiple first conical expansion sleeves 2 and second conical expansion sleeves 6 are fixedly connected to the side wall of the base plate 1. The first conical expansion sleeves 2 and second conical expansion sleeves 6 are used to achieve mechanical fixation between the insulating rod assembly and the base plate 1. The radial expansion of the conical structure forms an interference fit, which eliminates the risk of loosening of traditional threaded connections. The insulating bolt 5 cooperates with the conical expansion sleeve to perform axial pressing movement, causing the expansion sleeve to produce radial deformation and form a stable mechanical connection. The side walls of the first conical expansion sleeve 2 and the second conical expansion sleeve 6 are provided with insulating rod assemblies.

[0032] The insulating rod assembly includes a fully insulated conductive ring connecting rod 3 and a fully insulated brush holder connecting rod 4. One end of both the fully insulated conductive ring connecting rod 3 and the fully insulated brush holder connecting rod 4 is fixedly connected inside the first conical expansion sleeve 2 and the second conical expansion sleeve 6. Multiple conductive sleeves 8 are fixedly connected to the outer wall of the fully insulated conductive ring connecting rod 3. Insulating baffles 9 are fixedly connected to both sides of each conductive sleeve 8. An insulating bolt 5 is fixedly connected to one end of the fully insulated conductive ring connecting rod 3. The fully insulated conductive ring connecting rod 3 and the fully insulated brush holder connecting rod 4 are made of epoxy resin composite material, serving to establish a double insulation barrier, a well-known fact in the field of high-voltage insulation. The insulating baffles 9 on both sides of the conductive sleeves 8 are used to intercept brush toner, forming a physical isolation zone, effectively preventing toner accumulation and the formation of conductive channels, thus ensuring the long-term stability of the insulation system.

[0033] Reference Figure 2 - Figure 4The outer walls of the fully insulated conductive ring connecting rod 3 and the fully insulated brush holder connecting rod 4 are both set on the inner wall of the cylinder 10. The outer wall of the conductive sleeve 8 is set on the inner wall of the cylinder 10. The cylinder 10 is fixedly connected to the outer wall of the bottom plate 1. The moisture-absorbing box bracket 11 is fixedly connected to the outer wall of the cylinder 10. The moisture-absorbing box bracket 11 is welded from Q235 steel and is used to fix the moisture-absorbing shell 7, thus ensuring the mechanical reliability of the moisture-proof structure. The cylinder 10 is made of 304 stainless steel and serves to provide a sealed protective space. It is a conventional design for the collector ring shell. The moisture-absorbing shell 7 is fixedly connected to the side wall of the moisture-absorbing box bracket 11. The moisture-absorbing shell 7 works with the vent pipe 12 to circulate airflow. Through the adsorption and desorption of moisture-absorbing particles 14, the dynamic balance of humidity inside the cylinder 10 is achieved. The vent valve 13 is a one-way vent valve, which is used to regulate the airflow direction and is a conventional technology in the field of humidity control. The sealing gasket 15 is made of silicone rubber to ensure that the airflow completely passes through the moisture-absorbing medium. This will not be described in detail here. The moisture-absorbing shell 7 is filled with moisture-absorbing particles 14, which are used to absorb moisture. The sealing gasket 15 is fixedly connected to the side wall of the moisture-absorbing particles 14. The side wall of the sealing gasket 15 is fixedly connected to the side wall of the moisture-absorbing box bracket 11. The vent pipe 12 is fixedly connected to the side wall of the moisture-absorbing particles 14. The other end of the vent pipe 12 is fixedly connected to the outer wall of the cylinder 10. The vent valve 13 is fixedly connected to the inside of the moisture-absorbing shell 7. The other end of the vent valve 13 is located on the side wall of the moisture-absorbing particles 14, and one end of the vent valve 13 is located on the outer wall of the moisture-absorbing shell 7.

[0034] Working principle: In terms of mechanical structure operation, the fully insulated conductive ring connecting rod 3 and the fully insulated brush holder connecting rod 4 are rigidly connected to the base plate 1 through the first conical expansion sleeve 2 and the second conical expansion sleeve 6. When the insulating bolt 5 is tightened, the conical expansion sleeve expands radially under axial pressure, forming an interference fit with the insulating rod assembly. This avoids the risk of loosening under vibration conditions in traditional threaded connections, and completely eliminates interface defects between the metal core material and the insulating layer through the overall design of the fully insulated material, structurally blocking the creepage path. At the same time, the insulating baffles 9 on both sides of the conductive sleeve 8 form a physical barrier, directionally intercepting carbon powder generated by brush wear, preventing carbon powder from accumulating in the high-voltage electric field and forming a conductive channel, thus ensuring the long-term stability of the insulation system.

[0035] In terms of the moisture-proof and humidity-control mechanism, the moisture-absorbing box forms a closed-loop airflow channel with the inside of the cylinder 10 through the vent pipe 12. When the slip ring is working, the inside of the cylinder 10 generates positive pressure due to the increased temperature. Gas enters the moisture-absorbing shell 7 through the vent pipe 12, absorbs moisture through the moisture-absorbing particles 14, and is discharged through the vent valve 13. In the off state, external cold air enters through the vent valve 13, is dried by the moisture-absorbing particles 14, and then enters the inside of the cylinder 10, preventing direct intrusion of external moisture. The sealing gasket 15 ensures that the airflow completely passes through the moisture-absorbing particles 14. Combined with the one-way ventilation characteristic of the vent valve 13, dynamic humidity balance is achieved. Even in high humidity and temperature difference environments, the humidity inside the cylinder can be controlled within the insulation safety range, significantly slowing down the aging rate of the insulation material. The moisture-absorbing box bracket 11 provides stable support for the moisture-absorbing shell 7, ensuring the mechanical reliability of the entire moisture-proof structure.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A moisture-absorbing high-voltage slip ring, comprising a base plate (1), characterized in that; The bottom plate (1) has multiple first conical expansion sleeves (2) and second conical expansion sleeves (6) fixedly connected to its side wall. The side walls of the first conical expansion sleeves (2) and the second conical expansion sleeves (6) are provided with insulating rod assemblies. The insulating rod assembly includes a fully insulated conductive ring connecting rod (3) and a fully insulated brush holder connecting rod (4). One end of the fully insulated conductive ring connecting rod (3) and the fully insulated brush holder connecting rod (4) are fixedly connected inside the first conical expansion sleeve (2) and the second conical expansion sleeve (6). Multiple conductive sleeves (8) are fixedly connected to the outer wall of the fully insulated conductive ring connecting rod (3). An insulating baffle (9) is fixedly connected to both sides of each conductive sleeve (8). An insulating bolt (5) is fixedly connected to one end of the fully insulated conductive ring connecting rod (3).

2. The moisture-absorbing high-voltage slip ring according to claim 1, characterized in that: The outer walls of the fully insulated conductive ring connecting rod (3) and the fully insulated brush holder connecting rod (4) are both set on the inner wall of the cylinder (10), and the outer wall of the conductive sleeve (8) is set on the inner wall of the cylinder (10).

3. The moisture-absorbing high-voltage slip ring according to claim 1, characterized in that: The outer wall of the base plate (1) is fixedly connected to a cylinder (10), and the outer wall of the cylinder (10) is fixedly connected to a moisture-absorbing box bracket (11).

4. A moisture-absorbing high-voltage slip ring according to claim 3, characterized in that: The moisture-absorbing box bracket (11) is fixedly connected to a moisture-absorbing shell (7) on its side wall. The moisture-absorbing shell (7) is filled with moisture-absorbing particles (14), which are used to absorb moisture.

5. A moisture-absorbing high-voltage slip ring according to claim 4, characterized in that: A sealing gasket (15) is fixedly connected to the side wall of the moisture-absorbing particle (14), and the side wall of the sealing gasket (15) is fixedly connected to the side wall of the moisture-absorbing box bracket (11).

6. A moisture-absorbing high-voltage slip ring according to claim 5, characterized in that: The moisture-absorbing particle (14) has a vent pipe (12) fixedly connected to its side wall, and the other end of the vent pipe (12) is fixedly connected to the outer wall of the cylinder (10).

7. A moisture-absorbing high-voltage slip ring according to claim 6, characterized in that: The moisture-absorbing shell (7) is fixedly connected to a vent valve (13), with one end of the vent valve (13) located on the side wall of the moisture-absorbing particle (14) and the other end of the vent valve (13) located on the outer wall of the moisture-absorbing shell (7).

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