Rectifying device for permanent magnet synchronous generator

Abstract

The utility model relates to the technical field of rectifying devices, and discloses a rectifying device for a permanent magnet synchronous generator, which comprises a permanent magnet synchronous generator main body, a radiator is connected to the end face of a rotor shaft of the permanent magnet synchronous generator main body through a bolt pipe, and a heat insulation gasket is arranged between the radiator and the rotor shaft. A common anode rectifier module and a common cathode rectifier module are fixedly mounted on the radiator through bolts; a through hole of a conical structure is formed in the center of the heat insulation gasket, a conical rubber plug seat is clamped into the through hole, a first threading hole is formed in the center of the conical rubber plug seat, a connecting plate is fixedly connected to the outer end of the conical rubber plug seat, a second threading hole is formed in the center of the connecting plate, and a plurality of connecting lugs are arranged on the outer wall of the connecting plate. The connecting lugs are fixedly connected with the radiator through bolts. According to the utility model, rectifier cables can be combed and fixed, and heat of the rotor shaft can be prevented from being transmitted to the rectifier by using the heat insulation gasket and the conical rubber plug seat.

Description

Technical Field

[0001] The utility model belongs to the technical field of rectifier devices, in particular to a rectifier device for a permanent magnet synchronous generator. Background Art

[0002] A rectifier is a device that converts alternating current (AC) into direct current (DC). It is used for powering devices and detecting radio signals. Rectifiers can be made from vacuum tubes, igniter tubes, solid-state silicon semiconductor diodes, mercury arc diodes, and other materials.

[0003] Currently, rotating rectifiers are used in permanent magnet synchronous generators, such as the brushless synchronous generator rotating rectifier device disclosed in Publication No. CN212649306U. Its main features include a gasket, a heat sink, a common anode rectifier module, a common cathode rectifier module, a pressure-sensitive module, and three connecting plates. The gasket is embedded and positioned in one end of the heat sink, and the other end of the heat sink is fixed to the end face of the non-drive end of the rotor shaft via several heat sink connecting screws. The common anode rectifier module and the common cathode rectifier module are fixed symmetrically to the other end of the heat sink, and the two ends of the pressure-sensitive module are respectively fixed to one end of the common anode rectifier module and one end of the common cathode rectifier module.

[0004] During actual use of the rectifier device in the above application, the applicant discovered that when the rectifier device is installed, the cable passes from the rotor shaft through the gasket and the heat sink to be connected to the rectifier bridge. When the rectifier is installed and operated, the cable is prone to shaking, causing the connector between the cable and the rectifier to fall off. At the same time, the heat from the operation of the rotor shaft is easily transferred to the radiator, thereby affecting the operation of the rectifier. In order to solve the above problems, a rectifier device for a permanent magnet synchronous generator is provided. Utility Model Content

[0005] The purpose of the present utility model is to provide a rectifier device for a permanent magnet synchronous generator in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model is as follows: a rectifier device for a permanent magnet synchronous generator, comprising a permanent magnet synchronous generator body, a rotor shaft being arranged in the permanent magnet synchronous generator body, a radiator being connected to the end surface of the rotor shaft via a bolt tube, a thermal insulation washer being arranged between the radiator and the rotor shaft, a connecting bolt between the radiator and the rotor shaft passing through the thermal insulation washer, and a common anode rectifier module and a common cathode rectifier module being fixedly mounted on the radiator via bolts;

[0007] A through hole with a conical structure is provided in the center of the thermal insulation gasket, a conical rubber plug is inserted into the through hole, a threading hole 1 is provided in the center of the conical rubber plug, a clamping gap is provided on the side wall of the insertion end of the conical rubber plug, the outer end of the conical rubber plug is fixedly connected to a connecting plate, a threading hole 2 is provided in the center of the connecting plate, a plurality of connecting ears are provided on the outer wall of the connecting plate, and the connecting ears are fixedly connected to the radiator by bolts.

[0008] In a preferred embodiment, a boss is provided on the end face of the rotor shaft, a limiting groove is provided on the bottom of the thermal insulation gasket, and the boss is adapted to be engaged with the limiting groove.

[0009] In a preferred embodiment, the radiator includes a touch plate and a plurality of heat sinks, the heat sink and the touch plate are an integrated structure, the touch plate is connected to the rotor shaft, the common anode rectifier module and the common cathode rectifier module are mounted on the touch plate, and the connecting ear is connected to the touch plate.

[0010] In a preferred embodiment, a circular hole is opened in the center of the touch panel, and the conical rubber plug passes through the circular hole.

[0011] In a preferred embodiment, a limiting ring is provided on the bottom surface of the touch panel, and the top of the thermal insulation gasket is engaged with the limiting ring.

[0012] In a preferred embodiment, embedding grooves are provided around the circular hole and are opened on the touch panel, and the connecting ears are adapted to be snap-fitted into the embedding grooves.

[0013] In a preferred embodiment, a shield mounted on the permanent magnet synchronous generator body is provided outside the common anode rectifier module and the common cathode rectifier module.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. In the present invention, the cable connected to the rectifier passes through the rotor shaft and then passes through the through hole of the thermal insulation gasket, the first threading hole of the conical rubber plug and the second threading hole of the connecting plate in sequence, and is finally connected to the rectifier. When the cable and the rectifier are fixed, the personnel use bolts to lock the second connection to the radiator. At this time, the conical rubber plug cooperates with the conical through hole of the thermal insulation gasket, so that the insertion end of the conical rubber plug passes through the tight gap to the inside to clamp the cable, thereby fixing and combing the cable to prevent the cable from shaking during rotation and causing the connection between the cable and the rectifier to loosen and fall off.

[0016] 2. In the present invention, the conical rubber plug can block the thermal insulation gasket, thereby preventing the heat at the rotor shaft from being transferred from the through hole of the thermal insulation gasket to the rectifier and affecting the heat dissipation of the rectifier. At the same time, the thermal insulation gasket 4 is used as the installation position of the external radiator, while preventing the rotor shaft from directly transferring heat to the radiator, reducing the heat dissipation effect on the rectifier. The mutual coordination of the structures can reduce the influence of the rotor operating temperature on the rectifier and ensure stable heat dissipation of the rectifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the decomposition structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the radiator in the present invention;

[0020] Figure 4 This is a schematic diagram showing the three-dimensional structure of the thermal insulation gasket in the present invention.

[0021] Markings in the figure: 1-permanent magnet synchronous generator body, 2-rotor shaft, 3-radiator, 4-thermal insulation gasket, 5-anode rectifier module, 6-common cathode rectifier module, 7-through hole, 8-conical rubber plug, 9-threading hole 1, 10-clamping gap, 11-connecting plate, 12-threading hole 2, 13-connecting ear, 14-boss, 15-limiting groove, 16-touch plate, 17-heat sink, 18-round hole, 19-limiting ring, 20-embedded groove, 21-shield. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] The following will be combined Figure 1-Figure 4 A rectifier device for a permanent magnet synchronous generator according to an embodiment of the present utility model is described in detail.

[0024] Example:

[0025] The present invention provides a rectifier device for a permanent magnet synchronous generator, referring to Figures 1 to 4As shown, it includes a permanent magnet synchronous generator body 1, a rotor shaft 2 is arranged in the permanent magnet synchronous generator body 1, a radiator 3 is connected to the end face of the rotor shaft 2 through a bolt tube, a thermal insulation gasket 4 is arranged between the radiator 3 and the rotor shaft 2, and the connecting bolts between the radiator 3 and the rotor shaft 2 pass through the thermal insulation gasket 4, and a common anode rectifier module 5 and a common cathode rectifier module 6 are fixedly installed on the radiator 3 by bolts. In the above structure, the common anode rectifier module 5 and the common cathode rectifier module 6 are used to form a rotating rectifier of the permanent magnet synchronous generator, and the radiator 3 is used to dissipate heat from the rectifier, and the thermal insulation gasket 4 is used to serve as the installation position of the extended radiator 3, while preventing the rotor shaft from directly transferring heat to the radiator 3, thereby reducing the heat dissipation effect on the rectifier.

[0026] It should be noted that the thermal insulation gasket 4 is made of a high-temperature insulating material, specifically mica, DPFC high-temperature insulating pads, and ceramics. The common anode rectifier module 5 and the common cathode rectifier module 6 are both conventional rectifiers equipped with MXG25-15 diodes.

[0027] refer to Figures 1 to 4 As shown, a through hole 7 of a conical structure is provided in the center of the thermal insulation gasket 4, and a conical rubber plug seat 8 is inserted into the through hole 7. A threading hole 9 is provided in the center of the conical rubber plug seat 8, and a clamping gap 10 is provided on the side wall of the insertion end of the conical rubber plug seat 8. The outer end of the conical rubber plug seat 8 is fixedly connected to a connecting plate 11, and a threading hole 2 12 is provided in the center of the connecting plate 11. A plurality of connecting ears 13 are provided on the outer wall of the connecting plate 11, and the connecting ears 13 are fixedly connected to the radiator 3 by bolts. The cable connected to the rectifier of this structure passes through the rotor shaft 2 and then passes through the through hole 7 of the thermal insulation gasket 4 and the threading hole 1 of the conical rubber plug seat 8 in sequence. 9 and the wire threading hole 2 12 of the connecting plate 11, and finally connected to the rectifier. When the cable and the rectifier are fixed, the personnel use bolts to lock the connection 2 13 and the radiator 3. At this time, the conical rubber plug 8 cooperates with the conical through hole 7 of the thermal insulation gasket 4, so that the insertion end of the conical rubber plug 8 passes through the tight gap 10 to the inside to clamp the cable, thereby fixing and combing the cable to avoid the cable shaking during rotation, causing the connection between the cable and the rectifier to loosen and fall off. At the same time, the conical rubber plug 8 can block the thermal insulation gasket 4, thereby preventing the heat at the rotor shaft 2 from being transferred from the through hole 7 of the thermal insulation gasket 4 to the rectifier and affecting the heat dissipation of the rectifier.

[0028] It should be noted that the conical rubber plug seat 8 is made of high-temperature resistant styrene-butadiene rubber, nitrile rubber and silicone rubber.

[0029] refer to Figures 1 to 4As shown, a boss 14 is provided on the end face of the rotor shaft 2, and a limiting groove 15 is provided on the bottom of the thermal insulation gasket 4. The boss 14 and the limiting groove 15 are adapted to be engaged. This structure uses the boss 14 and the limiting groove 15 to locate the connection position between the thermal insulation gasket 4 and the rotor shaft 2.

[0030] refer to Figures 1 to 4 As shown, the radiator 3 includes a touch plate 16 and a plurality of heat sinks 17. The heat sink 17 and the touch plate 16 are an integrated structure. The touch plate 16 is connected to the rotor shaft 2. The common anode rectifier module 5 and the common cathode rectifier module 6 are mounted on the touch plate 16. The connecting ear 13 is connected to the touch plate 16. This structure utilizes the touch plate 16 to conduct the heat of the rectifier to the heat sink 17. The heat sink 17 is utilized to increase the heat dissipation area, thereby quickly dissipating the heat of the rectifier and ensuring the heat dissipation effect.

[0031] refer to Figures 1 to 4 As shown, a circular hole 18 is opened in the center of the touch plate 16, and the conical rubber plug seat 8 passes through the circular hole 18. This structure uses the circular hole 18 to facilitate the conical rubber plug seat 8 to pass through the touch plate 16 and connect with the thermal insulation gasket 4.

[0032] refer to Figures 1 to 4 As shown, a limiting ring 19 is provided on the bottom surface of the touch plate 16, and the top of the thermal insulation gasket 4 is clamped with the limiting ring 19. In this structure, the thermal insulation gasket 4 is clamped into the limiting ring 19, thereby limiting the rotation of the thermal insulation gasket 4 and the radiator 3 to this position.

[0033] refer to Figures 1 to 4 As shown, the circular hole 18 is surrounded by embedding grooves 20 opened on the touch plate 16, and the connecting ear 13 is adapted to be snap-fitted into the embedding grooves 20. This structure utilizes the embedding grooves 20 to cooperate with the connecting ear 13 to locate and limit the installation position of the conical rubber plug 8, while improving the connection stability.

[0034] refer to Figures 1 to 4 As shown, a shield 21 installed on the permanent magnet synchronous generator body 1 is provided outside the common anode rectifier module 5 and the common cathode rectifier module 6. This structure uses the shield to protect the rectifier structure.

[0035] It should be noted that the above-mentioned shield 21 is provided with a ventilation hole.

[0036] The implementation principle of a rectifier device for a permanent magnet synchronous generator in an embodiment of the present application is as follows: when the rectifier is installed, the cable connected to the rectifier passes through the rotor shaft 2 and then passes through the through hole 7 of the thermal insulation gasket 4, the wire hole 9 of the conical rubber plug 8 and the wire hole 2 12 of the connecting plate 11 in sequence, and is finally connected to the rectifier. When the cable and the rectifier are fixed, the personnel use bolts to lock the connection 2 13 with the radiator 3. At this time, the conical rubber plug 8 cooperates with the conical through hole 7 of the thermal insulation gasket 4, so that the insertion end of the conical rubber plug 8 passes through the tight gap 10 to the inside to clamp the cable, thereby fixing and combing the cable to prevent the cable from shaking during rotation and causing the connection between the cable and the rectifier to loosen and fall off. At the same time, the conical rubber plug 8 can block the thermal insulation gasket 4, thereby preventing the heat at the rotor shaft 2 from being transferred from the through hole 7 of the thermal insulation gasket 4 to the rectifier and affecting the heat dissipation of the rectifier;

[0037] When in use, the heat insulating gasket 4 serves as the installation position of the epitaxial heat sink 3, while preventing the rotor shaft from directly transferring heat to the heat sink 3, thereby reducing the heat dissipation effect on the rectifier.

[0038] It should be noted that the rectifier device disclosed in the above embodiment is applied to a permanent magnet synchronous generator.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rectifier device for a permanent magnet synchronous generator, comprising a permanent magnet synchronous generator body (1), characterized in that: A rotor shaft (2) is provided in the permanent magnet synchronous generator body (1); a radiator (3) is connected to the end surface of the rotor shaft (2) via a bolted tube; a heat insulating washer (4) is provided between the radiator (3) and the rotor shaft (2); a connecting bolt between the radiator (3) and the rotor shaft (2) passes through the heat insulating washer (4); and a common anode rectifier module (5) and a common cathode rectifier module (6) are fixedly mounted on the radiator (3) via bolts; A through hole (7) with a conical structure is provided at the center of the thermal insulation gasket (4), a conical rubber plug (8) is inserted into the through hole (7), a threading hole (9) is provided at the center of the conical rubber plug (8), a clamping gap (10) is provided on the side wall of the insertion end of the conical rubber plug (8), the outer end of the conical rubber plug (8) is fixedly connected to a connecting plate (11), a threading hole (12) is provided at the center of the connecting plate (11), a plurality of connecting ears (13) are provided on the outer wall of the connecting plate (11), and the connecting ears (13) are fixedly connected to the radiator (3) by bolts.

2. A rectifier device for a permanent magnet synchronous generator according to claim 1, characterized in that: The end surface of the rotor shaft (2) is provided with a boss (14), the bottom of the thermal insulation gasket (4) is provided with a limiting groove (15), and the boss (14) is adapted to be engaged with the limiting groove (15).

3. The rectifier device for a permanent magnet synchronous generator according to claim 1, wherein: The heat sink (3) includes a touch plate (16) and a plurality of heat sinks (17), the heat sinks (17) and the touch plate (16) are an integrated structure, the touch plate (16) is connected to the rotor shaft (2), the common anode rectifier module (5) and the common cathode rectifier module (6) are mounted on the touch plate (16), and the connecting ear (13) is connected to the touch plate (16).

4. A rectifier device for a permanent magnet synchronous generator according to claim 3, characterized in that: A circular hole (18) is provided at the center of the touch plate (16), and the conical rubber plug seat (8) passes through the circular hole (18).

5. A rectifier device for a permanent magnet synchronous generator according to claim 4, characterized in that: A limiting ring (19) is provided on the bottom surface of the touch plate (16), and the top of the thermal insulation gasket (4) is engaged with the limiting ring (19).

6. A rectifier device for a permanent magnet synchronous generator according to claim 4, characterized in that: The circular hole (18) is provided with embedding grooves (20) opened on the touch plate (16) around its periphery, and the connecting ear (13) is adapted to be snap-connected with the embedding grooves (20).

7. A rectifier device for a permanent magnet synchronous generator according to claim 1, characterized in that: The common anode rectifier module (5) and the common cathode rectifier module (6) are provided with a shield (21) mounted on the permanent magnet synchronous generator body (1) on the outside.

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