Electromagnetic protection structure of brushless AC generator

Abstract

The utility model relates to the technical field of brushless alternating-current generators, and discloses an electromagnetic protection structure of a brushless alternating-current generator, which comprises a support frame, a generator shell arranged above the support frame, a magnetic winding arranged in the rear end of the generator shell, a pipe groove arranged in the generator shell, and a cooling pipe arranged in the pipe groove. A condensate water tank is arranged at the top of the supporting frame, a circulating pump is arranged outside the cooling pipe, a protection assembly is arranged outside the magnetic winding and comprises a moving groove formed in the inner wall of the generator shell, a sliding block is movably arranged in the moving groove, a mounting frame is fixedly connected to the sliding block, and an anti-interference layer is laid on the inner side of the mounting frame. The sliding block is provided with the limiting clamping piece, cooling liquid is conveyed into the cooling pipe through the circulating pump, air around the magnetic winding is cooled, external electromagnetic interference is shielded through the protection assembly, and the problem that an existing protection structure of the brushless alternating-current generator is difficult to protect electromagnetism in the generator is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless AC generators, in particular to an electromagnetic protection structure of a brushless AC generator. Background Art

[0002] The brushless generator is actually composed of two generators, one as the exciter and the other as the main generator, and a rotating rectifier composed of diodes. The excitation winding of the main generator is on the rotor and the armature winding is on the stator. The armature winding of the exciter is on the rotor and the excitation winding is on the stator. In order to protect the brushless AC generator from long-term continuous operation, it is generally equipped with a protective structure that can resist external interference.

[0003] Chinese patent document CN219499106U discloses a protective device for a brushless AC generator, which relates to the technical field of motor protection equipment. The protective device for the brushless AC generator comprises a brushless AC generator body, a base is arranged on the bottom surface of the brushless AC generator body, a first shield is installed on the top surface of the base and located on one side of the output end of the brushless AC generator body, a second shield is installed on one end of the first shield through an accordion cover, and the second shield and the bottom of the two side walls of the first shield are both provided with fixing plates, and the fixing plates are connected to the top surface of the base through screws, the inner wall of the first shield is connected to the inner wall of the second shield through multiple groups of guide components, the guide components are used to strengthen the connection between the first shield and the second shield, and the guide components include a pull-out telescopic rod. The utility model can protect brushless AC generator bodies of various models, thereby improving the scope of use and functionality of the protective device. However, this device is difficult to protect the electromagnetics in the generator, resulting in external electromagnetic interference affecting the operation of the generator. At the same time, the brushless AC generator will generate high temperature during operation. If the heat of the motor is not dissipated in a timely and effective manner, the increase in temperature will cause the resistance in the electromagnetic coil to increase and the inductance to decrease, resulting in a decrease in the working efficiency of the electromagnetic.

[0004] Therefore, in order to solve such problems, we propose an electromagnetic protection structure for a brushless AC generator. Utility Model Content

[0005] The purpose of the utility model is to provide an electromagnetic protection structure for a brushless AC generator, aiming to solve the problem in the above-mentioned background technology that the existing protection structure of the brushless AC generator is difficult to protect the electromagnetics in the generator, resulting in external electromagnetic interference affecting the operation of the generator, and the generator does not dissipate heat in time, which easily leads to a decrease in electromagnetic working efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electromagnetic protection structure of a brushless AC generator, comprising a support frame, a generator housing is arranged above the support frame, a magnetic winding is arranged inside the rear end of the generator housing, a pipe groove is opened in the generator housing outside the magnetic winding, a cooling pipe is arranged inside the pipe groove, a condensing water tank is arranged on the top of the support frame, a water inlet of the cooling pipe is connected to the output end of the condensing water tank, a water outlet of the cooling pipe is connected to the input end of the condensing water tank, a circulating pump is arranged outside the cooling pipe, and a protective component is arranged outside the magnetic winding through a fixing component;

[0007] The protective component includes a movable groove opened on the inner wall of the generator casing, a slider is movably arranged inside the movable groove, an installation frame is fixedly connected to the slider, the installation frame is movably sleeved on the outside of the magnetic winding, an anti-interference layer is laid on the inner side of the installation frame, a limit card is arranged on the slider, and the limit card is inserted into the inside of the fixed component.

[0008] Preferably, a front end cover is provided at the front end of the generator housing, a vent is provided inside the front end cover, a filter element is provided inside the vent, a rear end cover is provided at the front end of the generator housing, a heat dissipation groove is provided on the rear end cover, and a dustproof net is provided inside the heat dissipation groove.

[0009] Preferably, the limit clamp includes a sleeve arranged on one side of the slider, a convex tube is connected to the lower side of the sleeve, a limit rod is slidably arranged inside the convex tube, the upper end of the limit rod movably extends through the inside of the sleeve, the top of the limit rod is cut into a wedge surface, and a spring is arranged outside the limit rod in the convex tube.

[0010] Preferably, the fixing assembly includes a connecting block installed on the inner wall of the generator housing, the connecting block is arranged on the side of the movable groove inside the generator housing, a column one is arranged on the side of the connecting block close to the movable groove, a column two is arranged at one end of the column one, a positioning block is arranged at the end of the column two away from the column one, a movable groove is arranged inside the positioning block, and a slip ring is arranged on the outside of the column two.

[0011] Preferably, a guide rod is movably provided inside the installation frame, and one end of the guide rod is fixedly mounted on the generator housing.

[0012] Preferably, a rotating shaft is provided inside the generator housing, and a blowing fan is fixedly sleeved outside the rotating shaft, and the blowing port of the blowing fan faces the magnetic winding.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, firstly, the slider drives the sleeve to approach the connecting block until the positioning block is inserted into the sleeve, and the positioning block moves to push the limiting rod to retract toward the convex tube. When the positioning block completely passes through the limiting rod, the limiting rod is pushed by the spring to re-extend into the sleeve to limit the positioning block, and the installation frame is fixed. The coolant in the condensation water tank is transported into the cooling pipe through the circulating pump to cool the air around the magnetic winding to prevent high temperature from affecting the operation of the magnetic winding. The device can protect the electromagnetic in the generator, prevent external electromagnetic interference from affecting the operation of the generator, and improve the working efficiency of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional schematic diagram of an electromagnetic protection structure of a brushless AC generator proposed by the utility model;

[0016] Figure 2 A schematic plan view of an electromagnetic protection structure of a brushless AC generator proposed by the utility model;

[0017] Figure 3 The internal structure of the electromagnetic protection structure of a brushless AC generator proposed by the utility model is schematically shown. Figure 1 ;

[0018] Figure 4 The internal structure of the electromagnetic protection structure of a brushless AC generator proposed by the utility model is schematically shown. Figure 2 ;

[0019] Figure 5 It is a three-dimensional exploded schematic diagram of a protection component in an electromagnetic protection structure of a brushless AC generator proposed by the utility model;

[0020] Figure 6 The utility model is a three-dimensional exploded schematic diagram of a fixed component in an electromagnetic protection structure of a brushless AC generator.

[0021] Legend:

[0022] 1. Support frame; 2. Generator housing; 21. Front cover; 22. Ventilation port; 23. Filter element; 24. Rear cover; 25. Heat sink; 26. Dust screen; 3. Magnetic winding; 4. Protective assembly; 41. Moving slot; 42. Slider; 43. Mounting frame; 44. Anti-interference layer; 45. Limiting card; 451. Sleeve; 452. Convex pipe; 453. Limiting rod; 454. Wedge surface; 455. Spring; 5. Fixing assembly; 51. Connecting block; 52. Column one; 53. Column two; 54. Positioning block; 55. Movable slot; 56. Slip ring; 6. Guide rod; 7. Blowing fan; 8. Pipe slot; 9. Cooling pipe; 91. Circulating pump; 10. Condensate tank. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Reference Figure 1-6 The utility model provides an embodiment: an electromagnetic protection structure of a brushless AC generator, comprising a support frame 1, a generator housing 2 is arranged above the support frame 1, a magnetic winding 3 is arranged inside the rear end of the generator housing 2, a pipe groove 8 is opened in the generator housing 2 outside the magnetic winding 3, a cooling pipe 9 is arranged inside the pipe groove 8, and the cooling pipe 9 is wrapped around the pipe groove 8. A condensing water tank 10 is arranged on the top of the support frame 1 to provide cooling liquid, a water inlet of the cooling pipe 9 is connected to the output end of the condensing water tank 10, and a water outlet of the cooling pipe 9 is connected to the input end of the condensing water tank 10. A circulating pump 91 is arranged outside the cooling pipe 9, and the coolant in the condensing water tank 10 is transported into the cooling pipe 9 through the circulating pump 91 to cool the air around the magnetic winding 3 to prevent high temperature from affecting the operation of the magnetic winding 3. A protective component 4 is arranged outside the magnetic winding 3 through a fixing component 5, and the protective component 4 shields external electromagnetic interference to prevent affecting the electromagnetic group in the generator;

[0026] The protection component 4 includes a movable groove 41 opened on the inner wall of the generator housing 2, and a slider 42 is movably arranged inside the movable groove 41. A mounting frame 43 is fixedly connected to the slider 42. The mounting frame 43 is annular and movably sleeved on the outside of the magnetic winding 3. An anti-interference layer 44 is laid on the inner side of the mounting frame 43 to shield external electromagnetic interference. A limit card 45 is arranged on the slider 42, and the limit card 45 is inserted into the inside of the fixed component 5 to fix the mounting frame 43. The fixed component 5 is arranged at one end inside the movable groove 41. The slider 42 is inserted into the movable groove 41, and the slider 42 is pushed to slide into the inner end of the movable groove 41, so that the limit card 45 is inserted into the fixed component 5 to fix the mounting frame 43.

[0027] A front end cover 21 is provided at the front end of the generator housing 2, and a vent 22 is opened inside the front end cover 21. Wind enters the generator housing 2 from the vent 22 to cool the electromagnetic group. A filter element 23 is provided inside the vent 22 to filter dust and impurities to prevent dust from entering and accumulating inside the generator housing 2. A rear end cover 24 is spirally connected to the rear end of the generator housing 2. A heat dissipation groove 25 is provided on the rear end cover 24 for heat dissipation and ventilation. A dustproof net 26 is provided inside the heat dissipation groove 25.

[0028] The limiting clamp 45 includes a sleeve 451 arranged on one side of the slider 42, a convex tube 452 is connected to the lower side of the sleeve 451, a limiting rod 453 is slidably arranged inside the convex tube 452, the lower end of the limiting rod 453 passes through the bottom of the convex tube 452, and a limiting block is arranged, the upper end of the limiting rod 453 is movably extended to the inside of the sleeve 451, the top of the limiting rod 453 is cut into a wedge surface 454, which is convenient for sliding along the surface of the positioning block 54, and a spring 455 is arranged outside the limiting rod 453 in the convex tube 452, and the spring 45 One end of the spring 455 is fixedly installed inside the convex tube 452, and the other end of the spring 455 is fixedly connected to the limiting rod 453. The fixing assembly 5 includes a connecting block 51 installed on the inner wall of the generator housing 2. The connecting block 51 is arranged on the side of the movable groove 41 located inside the generator housing 2. A column 1 52 is arranged on the side of the connecting block 51 close to the movable groove 41, a column 2 53 is arranged at one end of the column 1 52, and a positioning block 54 is arranged at the end of the column 2 53 away from the column 1 52. A movable groove 55 is arranged inside the positioning block 54. The outer part of the second column 53 is provided with a slip ring 56. The slider 42 drives the sleeve 451 to move, so that the sleeve 451 is close to the connecting block 51, until the positioning block 54 is inserted into the sleeve 451. The positioning block 54 moves to push the limiting rod 453 to retract toward the convex tube 452. When the positioning block 54 completely passes through the limiting rod 453, the limiting rod 453 is pushed by the spring 455 to re-extend into the sleeve 451, and the positioning block 54 is limited, so that the installation frame 43 is fixed inside the generator housing 2. When the installation frame 43 needs to be disassembled, The installation frame 43 is pushed inward, and the slider 42 drives the sleeve 451 to move inward, so that the limit rod 453 retracts under the pressure of the slip ring 56, and the limit rod 453 passes over the slip ring 56 and re-extends under the push of the spring 455. Then, the installation frame 43 is pulled outward, and the limit rod 453 drives the slip ring 56 to move on the column 2 53. After the slip ring 56 moves to the inside of the movable groove 55, it is held immovable. The limit rod 453 slides over the positioning block 54 along the slip ring 56, so that the positioning block 54 is separated from the sleeve 451, and the installation frame 43 can be removed.

[0029] A guide rod 6 is provided inside the installation frame 43 and moves therethrough. One end of the guide rod 6 is fixedly mounted on the generator housing 2. The guide rod 6 limits the installation frame 43 so that the movement of the installation frame 43 is more stable.

[0030] A rotating shaft is arranged inside the generator housing 2, and a blowing fan 7 is fixedly sleeved on the outside of the rotating shaft. The blowing port of the blowing fan 7 faces the magnetic winding 3. The blowing fan 7 blows air toward the magnetic winding 3 to increase the air circulation around the magnetic winding 3 and cool it down.

[0031] Working principle: first, insert the slider 42 into the movable groove 41, push the slider 42 to slide into the inner end of the movable groove 41, and the slider 42 drives the sleeve 451 to move, so that the sleeve 451 is close to the connecting block 51, until the positioning block 54 is inserted into the sleeve 451, and the positioning block 54 moves to push the limiting rod 453 to retract toward the convex tube 452. When the positioning block 54 completely passes through the limiting rod 453, the limiting rod 453 is pushed by the spring 455 to re-extend into the sleeve 451 to limit the positioning block 54, so that the mounting frame 43 is fixed inside the generator casing 2, and the anti-interference layer 44 on the mounting frame 43 shields external electromagnetic interference. The coolant in the condensation water tank 10 is transported into the cooling pipe 9 through the circulating pump 91 to cool the air around the magnetic winding 3 to prevent high temperature from affecting the operation of the magnetic winding 3.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic protection structure of a brushless AC generator, comprising a support frame (1), characterized in that: A generator housing (2) is arranged above the support frame (1), a magnetic winding (3) is arranged inside the rear end of the generator housing (2), a pipe groove (8) is opened in the generator housing (2) outside the magnetic winding (3), a cooling pipe (9) is arranged inside the pipe groove (8), a condensing water tank (10) is arranged on the top of the support frame (1), a water inlet of the cooling pipe (9) is connected to the output end of the condensing water tank (10), a water outlet of the cooling pipe (9) is connected to the input end of the condensing water tank (10), a circulating pump (91) is arranged outside the cooling pipe (9), and a protective component (4) is arranged outside the magnetic winding (3) through a fixing component (5); The protection component (4) comprises a movable groove (41) provided on the inner wall of the generator housing (2); a slider (42) is movably provided inside the movable groove (41); a mounting frame (43) is fixedly connected to the slider (42); the mounting frame (43) is movably sleeved outside the magnetic winding (3); an anti-interference layer (44) is provided on the inner side of the mounting frame (43); a limit clamp (45) is provided on the slider (42); and the limit clamp (45) is inserted into the interior of the fixed component (5).

2. The electromagnetic protection structure of a brushless AC generator according to claim 1, characterized in that: The generator housing (2) is provided with a front end cover (21) at the front end, a vent (22) is provided inside the front end cover (21), a filter element (23) is provided inside the vent (22), the generator housing (2) is provided with a rear end cover (24) at the front end, a heat dissipation groove (25) is provided on the rear end cover (24), and a dustproof net (26) is provided inside the heat dissipation groove (25).

3. The electromagnetic protection structure of a brushless AC generator according to claim 1, characterized in that: The limiting clamp (45) comprises a sleeve (451) arranged on one side of the slider (42); the lower side of the sleeve (451) is connected to a convex tube (452); a limiting rod (453) is slidably arranged inside the convex tube (452); the upper end of the limiting rod (453) movably extends through the inside of the sleeve (451); the top of the limiting rod (453) is cut into a wedge surface (454); and a spring (455) is arranged outside the limiting rod (453) in the convex tube (452).

4. The electromagnetic protection structure of a brushless AC generator according to claim 1, characterized in that: The fixing assembly (5) comprises a connecting block (51) mounted on the inner wall of the generator housing (2); the connecting block (51) is arranged on a side of the movable groove (41) located inside the generator housing (2); a first column (52) is arranged on the side of the connecting block (51) close to the movable groove (41); a second column (53) is arranged at one end of the first column (52); a positioning block (54) is arranged at one end of the second column (53) away from the first column (52); a movable groove (55) is arranged inside the positioning block (54); and a slip ring (56) is arranged on the outside of the second column (53).

5. The electromagnetic protection structure of a brushless AC generator according to claim 1, characterized in that: A guide rod (6) is movably provided inside the installation frame (43) and penetrates therethrough, and one end of the guide rod (6) is fixedly mounted on the generator housing (2).

6. The electromagnetic protection structure of a brushless AC generator according to claim 1, characterized in that: A rotating shaft is arranged inside the generator housing (2), and a blowing fan (7) is fixedly sleeved outside the rotating shaft, with the blowing port of the blowing fan (7) facing the magnetic winding (3).

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