Improved insulation structure of slip-ring of ship electrically excited slip-ring generator

Abstract

This utility model discloses an improved insulation structure for the slip ring of a marine shaft-driven electrically excited generator, relating to the technical field of marine shaft-driven generators. It includes a slip ring seat, a slip ring connecting plate, a first slip ring, a second slip ring, an insulating sleeve, and an insulating ring. The split-type slip ring seat provided by this utility model can be installed without disassembling the ship's main shaft, greatly simplifying the installation process and saving time and labor costs. Both the slip ring and its insulation device adopt an axial mounting hole fit method, which provides better support performance compared to the traditional radial hole structure, better adapting to the complex spatial environment inside the ship's cabin and effectively solving the problems of limited installation space and difficult assembly. The slip ring and its insulation device of this utility model do not require modification of the existing ship's main shaft, disassembly, or welding. The structure is simple and the support is stable, adaptable to various ship modification conditions, and has significant practical value and broad application prospects.

Description

Technical Field

[0001] This utility model relates to the field of marine shaft-driven generator technology, specifically to an improved insulation structure of the slip ring for a marine shaft-driven electrically excited generator. Background Technology

[0002] With the continuous development of marine technology, marine shaft-driven generators have been increasingly widely used in the field of ship modification due to their significant advantages, such as fully utilizing the ship's redundant power and reducing fuel consumption. However, during the ship modification process, users often do not want to involve the machining of intermediate shafts, which brings certain challenges to the installation and modification of shaft-driven generators.

[0003] Traditional marine shaft-driven generator slip rings and their insulation devices typically require insertion through the end of the main shaft or drilling into the shaft during installation. However, the limited and complex interior space of most ship cabins results in extremely limited installation space around the main shaft, making assembly very difficult. Furthermore, some converted ships, due to their structural and design limitations, cannot accommodate main shaft drilling, further restricting the applicability of traditional slip rings and their insulation devices. Summary of the Invention

[0004] The purpose of this utility model is to provide an improved insulation structure for the slip ring of a marine shaft-mounted electric excitation generator, in order to solve the problem mentioned in the background art that most ship cabins have limited internal space and complex layout, resulting in extremely limited installation space for the motor around the ship's main shaft and extremely difficult assembly work.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved insulation structure for a marine shaft-mounted electric excitation shaft generator slip ring, comprising a slip ring seat with an interference fit installed on the ship's main shaft, wherein a first slip ring and a second slip ring are connected to the slip ring seat via a slip ring connecting plate; the slip ring seat includes a slip ring seat sleeve fitted on the ship's main shaft, wherein radially protruding annular symmetrical ring ribs are respectively provided on the outer side wall of the slip ring seat sleeve near both ends, and multiple axial threaded holes are evenly distributed on each of the two symmetrical ring ribs, wherein the two symmetrical ring ribs are respectively connected through the axial threaded holes to allow Multiple collector ring connecting plates are evenly installed with bolts; each collector ring connecting plate has two connecting plate through holes near its inner and outer edges, and the connecting plate through holes near the inner edge correspond one-to-one with the bolt holes of the collector ring seat and are coaxially arranged and fixed by bolts; the multiple connecting plate through holes near the outer edge of the collector ring connecting plate are respectively connected to the corresponding first collector ring and second collector ring by bolts; the first collector ring and the second collector ring are both arranged in half of a circular ring, and the joint surfaces of the half of the first collector ring and the second collector ring are respectively machined with stepped grooves in the axial direction and are connected into one piece by bolts.

[0006] Preferably, the collector ring seat is a split type, consisting of an upper collector ring seat and a lower collector ring seat. The collector ring seat sleeve is provided with a collector ring seat connecting plate extending outward and perpendicular to the symmetrical ring rib at the joint of the upper and lower collector ring seats. The collector ring seat connecting plate is provided with a through hole and is connected as a whole by bolts.

[0007] Preferably, the collector ring connecting plates are respectively placed on one side of the symmetrical ring ribs near the end of the collector ring seat; a collector ring seat groove is provided on the outer wall of the collector ring seat sleeve on one side of the collector ring connecting plate.

[0008] Preferably, the collector ring connecting plate is a plurality of circumferentially distributed sector-shaped blocks.

[0009] Preferably, an annular insulating ring is provided between the symmetrical ring rib and the first and second collector rings, respectively. The insulating ring is provided with a through hole coaxial with the axial threaded hole and is bolted between the symmetrical ring rib and the collector ring connecting plate.

[0010] Preferably, the two adjacent sector blocks of the collector ring connecting plate are connected as one unit by an insulating ring and bolts.

[0011] Preferably, the first slip ring and the second slip ring are connected as one piece using a stainless steel screw; an insulating sleeve is fitted on the outer side of the stainless steel screw between the first slip ring and the second slip ring.

[0012] Preferably, the same end of the stainless steel screw passing through the first and second slip rings is connected as one piece using a connecting copper plate.

[0013] Preferably, the outer wall of the insulating sleeve has a convex surface as the positive direction.

[0014] Preferably, the insulating ring is made of glass fiber cloth.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The collector ring seat provided by this utility model adopts a split design, which is divided into an upper collector ring seat and a lower collector ring seat. This design allows the collector ring and its insulation device to be installed without disassembling the ship's main shaft, which greatly simplifies the installation process and saves installation time and labor costs.

[0017] 2. The slip ring and its insulation device both adopt the axial mounting hole fit method. Compared with the traditional radial hole structure, this design makes the assembly more convenient, the support performance is better, and it can better adapt to the complex space environment inside the ship's cabin, effectively solving the problems of small installation space and difficult assembly.

[0018] 3. This utility model uses a stainless steel screw to connect the first and second slip rings, and connects the circuit through a copper plate. Although the conductivity of the copper screw is better than that of the stainless steel screw, comparative tests have shown that the mechanical properties of the copper screw are slightly inferior, making it prone to breakage. The stainless steel screw, considering both mechanical strength and conductivity, better meets the practical application requirements, ensuring the stability and reliability of the device during operation.

[0019] 4. The slip ring and its insulation device of this utility model do not require modification of the existing ship main shaft, disassembly, or welding. The structure is simple and the support is stable, making it adaptable to various ship modification conditions. After actual trial production and operational testing, the device has been successfully applied to 1700kW and 1550kW shaft-driven generators, maintaining good structural integrity and achieving the expected results. It has broad application value.

[0020] In summary, the marine shaft-mounted electro-excited generator slip ring and its insulation device of this utility model have significant advantages in terms of structural design, mechanical performance, conductivity, insulation performance and adaptability. It can effectively solve the problems existing in the prior art, meet the high requirements for shaft-mounted generator slip rings and their insulation devices during ship modification, and has important practical value and broad application prospects. Attached Figure Description

[0021] Figure 1 This is an isometric drawing of the present invention;

[0022] Figure 2 for Figure 1 Structural diagram;

[0023] Figure 3 A cross-sectional view showing the installation of the first and second collector rings;

[0024] In the diagram: Slip ring seat-1, slip ring seat sleeve-11, symmetrical ring rib-12, axial threaded hole-13, slip ring seat groove-14, slip ring seat connecting plate-15, slip ring connecting plate-2, connecting plate through hole-21, stainless steel screw-22, connecting copper plate-23, first slip ring-3, second slip ring-4, insulating sleeve-5, insulating ring-6. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to Figure 1-3 , Figure 1This is an isometric drawing of the present invention; Figure 2 for Figure 1 Structural diagram; Figure 3 A cross-sectional view showing the installation of the first and second collector rings.

[0027] This utility model provides an improved insulation structure for the slip ring of a marine shaft-driven electric excitation generator, including a slip ring seat 1 that is interference-fitted onto the main shaft of the ship. The slip ring seat 1 is connected to a first slip ring 3 and a second slip ring 4 via a slip ring connecting plate 2.

[0028] The current collector ring seat 1 includes a current collector ring seat sleeve 11 sleeved on the main shaft of the ship. On the outer side wall of the current collector ring seat sleeve 11, near both ends, there are radially protruding annular symmetrical ring ribs 12. Multiple axial threaded holes 13 are evenly distributed on each of the two symmetrical ring ribs 12. Multiple current collector ring connecting plates 2 are evenly installed on each of the two symmetrical ring ribs 12 through the axial threaded holes 13 using bolts. The current collector ring connecting plates 2 are respectively placed on the side of the symmetrical ring rib 12 near the end of the current collector ring seat 1. At the same time, a current collector ring seat groove 14 is provided on the outer wall of the current collector ring seat sleeve 11 on one side of the current collector ring connecting plate 2.

[0029] A circular insulating ring 6 is provided between the symmetrical ring rib 12 and the first collector ring 3 and the second collector ring 4. The insulating ring 6 is provided with a through hole coaxial with the axial threaded hole 13 and is bolted between the symmetrical ring rib 12 and the collector ring connecting plate 2. The insulating ring 6 is made of glass fiber cloth, which provides support while ensuring the creepage distance between the collector ring seat 1 and the collector ring.

[0030] The collector ring seat 1 is a split type, consisting of an upper collector ring seat and a lower collector ring seat. The collector ring seat sleeve 11 is provided with a collector ring seat connecting plate 15 extending outward and perpendicular to the symmetrical ring rib 12 at the joint of the upper collector ring seat and the lower collector ring seat. The collector ring seat connecting plate 15 is provided with a through hole and is connected as a whole by bolts.

[0031] The collector ring connecting plate 2 is divided into multiple circumferentially distributed fan-shaped blocks, and two connecting plate through holes 21 are respectively provided near its inner and outer edges. The connecting plate through holes 21 near the inner edge correspond one-to-one with the axial threaded holes 13 and are coaxially arranged and fixed by bolts. The multiple connecting plate through holes 21 near the outer edge of the collector ring connecting plate 2 are respectively connected to the corresponding first collector ring 3 and second collector ring 4 by bolts.

[0032] The two adjacent sector blocks of the slip ring connecting plate 2 are connected as one unit by an insulating ring 6 and bolts, thereby enabling both the slip ring seat and the insulating ring to cooperate, as well as the insulating ring and the slip ring to cooperate, which greatly enhances the stability of the slip ring device structure and the ease of installation.

[0033] The first slip ring 3 and the second slip ring 4 are also connected as one unit using a stainless steel screw 22; an insulating sleeve 5 is provided on the outer side of the stainless steel screw 22 between the first slip ring 3 and the second slip ring 4; and the same end of the stainless steel screw 22 that passes through the first slip ring 3 and the second slip ring 4 is connected as one unit using a connecting copper plate 23.

[0034] The insulating sleeve 5 is used to ensure the electrical clearance between conductive devices with different polarities. At the same time, the outer wall of the insulating sleeve is provided with a convex surface as the positive direction to avoid incorrect installation orientation.

[0035] The first collector ring 3 and the second collector ring 4 have the same structure, both being split-ring arrangements. The joint surfaces at the split points of the first collector ring 3 and the second collector ring 4 are respectively machined with stepped grooves in the axial direction and connected as a whole by bolts, which effectively avoids the problem of flash gaps at the axial split points of the collector rings.

[0036] Although embodiments of the present invention have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, it will be understood by those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention and without creative effort are within the scope of protection of the present invention.

Claims

1. An improved insulation structure of a slip ring for a shipboard electrically excited shaft generator of a shaft-borne type, characterized by: The system includes an interference fit mounting of a slip ring seat (1) on the main shaft of a ship. The slip ring seat (1) is connected to a first slip ring (3) and a second slip ring (4) via slip ring connecting plates (2). The slip ring seat (1) includes a slip ring seat sleeve (11) fitted onto the main shaft of the ship. Radially protruding circular symmetrical ring ribs (12) are respectively provided on the outer side wall of the slip ring seat sleeve (11) near both ends. Multiple axial threaded holes (13) are evenly distributed on each of the two symmetrical ring ribs (12). Multiple slip ring connecting plates (2) are evenly installed on each of the two symmetrical ring ribs (12) using bolts through the axial threaded holes (13). The collector ring connecting plate (2) is provided with two connecting plate through holes (21) near its inner and outer edges respectively. The connecting plate through holes (21) near the inner edge correspond one-to-one with the axial threaded holes (13) and are coaxially arranged and fixed by bolts. The multiple connecting plate through holes (21) near the outer edge of the collector ring connecting plate (2) are connected to the corresponding first collector ring (3) and second collector ring (4) by bolts respectively. The first collector ring (3) and the second collector ring (4) are both arranged in half of a circular ring. The joint surfaces of the half of the first collector ring (3) and the second collector ring (4) are respectively machined with stepped grooves in the axial direction and are connected into one piece by bolts.

2. The improved insulation structure of the slip ring of the electrically excited maglev shaft generator for ships according to claim 1, characterized in that: The collector ring seat (1) is divided into an upper collector ring seat and a lower collector ring seat. The collector ring seat sleeve (11) is provided with a collector ring seat connecting plate (15) extending outward and perpendicular to the symmetrical ring rib (12) at the joint of the upper collector ring seat and the lower collector ring seat. The collector ring seat connecting plate (15) is provided with a through hole and is connected as a whole by bolts.

3. The improved insulation structure of the slip ring of the electrically excited maglev shaft generator for ships according to claim 2, characterized in that: The collector ring connecting plate (2) is placed on the side of the symmetrical ring rib (12) near the end of the collector ring seat (1); a collector ring seat groove (14) is provided on the outer wall of the collector ring seat sleeve (11) on one side of the collector ring connecting plate (2).

4. The improved electrically insulated structure of slip ring for electrically excited magnetic ship shaft generator according to claim 3, characterized in that: The collector ring connecting plate (2) consists of multiple circumferentially distributed sector-shaped blocks.

5. The improved electrically insulated structure of slip ring for electrically excited magnetic shaft generator of ship according to claim 4, characterized in that: A circular insulating ring (6) is provided between the symmetrical ring rib (12) and the first collector ring (3) and the second collector ring (4). The insulating ring (6) is provided with a through hole coaxial with the axial threaded hole (13) and is bolted between the symmetrical ring rib (12) and the collector ring connecting plate (2).

6. The improved electrically insulated structure of slip ring for electrically excited magnetic shaft generator of ship according to claim 5, characterized in that: The two adjacent sector blocks of the collector ring connecting plate (2) are connected as one unit by an insulating ring (6) and bolts.

7. The improved electrically insulated structure of slip ring for electrically excited magnetic ship shaft generator according to claim 6, characterized in that: The first collector ring (3) and the second collector ring (4) are also connected as one piece by a stainless steel screw (22); an insulating sleeve (5) is sleeved on the outside of the stainless steel screw (22) between the first collector ring (3) and the second collector ring (4).

8. The insulation structure of the improved marine shaft-mounted electric excitation generator slip ring according to claim 7, characterized in that: The same end of the stainless steel screw (22) that runs through the first collector ring (3) and the second collector ring (4) is connected as one piece by a connecting copper plate (23).

9. The improved electrically insulated structure of slip ring for electrically excited magnetic ship shaft generator according to claim 8, characterized in that: The insulating sleeve (5) has a convex surface on its positive outer wall as the positive direction.

10. The improved insulation structure of slip-ring for electrically excited shaft-alignment type generator of ship as claimed in any one of claims 5 to 9, wherein: The insulating ring (6) is made of glass fiber cloth.

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