Heat dissipation structure of brushless doubly-fed alternating-current generator

Abstract

The utility model discloses a heat dissipation structure of a brushless doubly-fed alternating current generator, which relates to the technical field of generators and comprises a generator body, a first clamping groove, a thread groove and a fixing ring are arranged on the side wall of the generator body, and internal threads are arranged on the inner side wall of the fixing ring. The inner side wall of the fixing ring is provided with a second clamping groove, the second clamping groove is located at the end away from the internal thread, the side wall of the generator body is provided with an installation plate, the side wall, away from the generator body, of the installation plate is provided with a heat dissipation plate, and the output end of the generator body is provided with fan blades. The heat dissipation mode of the generator body is increased, the heat dissipation efficiency of the heat dissipation plate can be improved through wind output by the fan blades, the heat dissipation efficiency of the generator body is further improved, the structure is simple, operation is easy, and the service life of the generator is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a heat dissipation structure of a brushless double-fed AC generator. Background Art

[0002] A generator is a device that converts mechanical energy into electrical energy by installing its kinetic energy components inside a fuselage, and then generating electromotive force through electromagnetic induction of the internal kinetic energy components. The fuselage is equipped with a stator core and a rotor. During the operation of the generator, heat is generated. If the heat is not dissipated in time, it will easily affect the normal operation of the generator. In order to solve this problem, heat dissipation holes are often opened on the fuselage. However, the cooling air blown into the fuselage through the heat dissipation holes mostly flows between the stator core and the inner wall of the fuselage, and the main heat generation site is between the stator core and the rotor, and then flows out directly through the heat dissipation holes. The heat dissipation time is relatively short, which will make the heat dissipation of the generator relatively poor and shorten the service life of the generator.

[0003] Chinese patent document CN209134227U discloses a heat dissipation structure for a generator, including a fuselage, wherein the outer wall of the fuselage is provided with heat dissipation holes along its circumferential direction, the fuselage is equipped with a stator core and a rotor, and further includes a wind shield ring, which is installed between the fuselage and the stator core, the inner wall of the fuselage is connected with a rib plate along its circumferential direction, the wind shield ring located at the rib plate is provided with a through hole, the wind shield ring is embedded in the rib plate arranged along the circumferential direction of the inner wall of the fuselage through the through hole, the fuselage is provided with a wire outlet, the wind shield ring located at the wire outlet is provided with an air outlet, and the diameter of the air outlet is larger than the diameter of the wire outlet. The above-mentioned heat dissipation structure for the generator has shortcomings. Although the device can achieve heat dissipation for the generator, it has limitations. It has heat dissipation holes opened through the fuselage, and then uses external wind energy for heat dissipation. Its heat dissipation efficiency is low, and the external wind is divided into artificial wind and natural wind. The natural wind has a relatively small wind force and limited heat dissipation capacity. Secondly, artificial wind needs to use a fan to output wind energy. Although the wind force output by the fan is large, the fan requires an external power supply, which causes energy waste and increases the heat dissipation cost.

[0004] Therefore, in order to solve such problems, we propose a heat dissipation structure of a brushless doubly-fed AC generator. Utility Model Content

[0005] The utility model aims to provide a heat dissipation structure for a brushless double-fed AC generator, aiming to solve the problem in the above-mentioned background technology that the existing heat dissipation structure for the generator has low heat dissipation efficiency during use, which easily causes energy waste.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a heat dissipation structure of a brushless doubly-fed AC generator, comprising a generator body, a first slot is provided on the side wall of the generator body, a thread groove is provided on the side wall of the generator body, a fixing ring is provided on the side wall of the generator body, an internal thread is provided on the inner side wall of the fixing ring, a second slot is provided on the inner side wall of the fixing ring, and the second slot is located at an end away from the internal thread, a mounting plate is provided on the side wall of the generator body, two ends of the mounting plate are respectively located in the first slot and the second slot, a heat dissipation plate is provided on the side wall of the mounting plate away from the generator body, and a fan blade is provided at the output end of the generator body.

[0007] Preferably, a mounting frame is provided at the output end of the generator body, the fan blades are located in the mounting frame, a plurality of connecting columns are provided at one end of the mounting frame close to the generator body, and one end of the connecting columns away from the mounting frame is fixedly connected to the generator body.

[0008] Preferably, the mounting plate is fan-shaped, eight mounting plates are provided in total, and the mounting plates are components made of aluminum material.

[0009] Preferably, five heat dissipation plates are provided on each side wall of the mounting plate, and the heat dissipation plates are made of aluminum.

[0010] Preferably, the length of the heat dissipation plate is shorter than the length of the mounting plate.

[0011] Preferably, there are six fan blades arranged at the output end of the generator body.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, a fixing ring, an internal thread, a second slot, a mounting plate, a heat sink and fan blades are provided. The fan blades and the heat sink are used to perform secondary heat dissipation on the generator body, thereby increasing the heat dissipation method for the generator body. Secondly, the wind output by the fan blades can also accelerate the heat dissipation efficiency of the heat sink, further accelerating the heat dissipation efficiency of the generator body. Secondly, a mounting frame is provided to prevent the fan blades from accidentally injuring the staff and increase the safety of the device. The structure of the arrangement is simple and easy to operate, thereby extending the service life of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional schematic diagram of the heat dissipation structure of a brushless double-fed AC generator proposed in the utility model Figure 1 ;

[0015] Figure 2 A three-dimensional schematic diagram of the heat dissipation structure of a brushless double-fed AC generator proposed in the utility model Figure 2 ;

[0016] Figure 3A three-dimensional exploded diagram of a heat dissipation structure of a brushless double-fed AC generator proposed in the utility model Figure 1 ;

[0017] Figure 4 A three-dimensional exploded diagram of a heat dissipation structure of a brushless double-fed AC generator proposed in the utility model Figure 2 .

[0018] Legend:

[0019] 1. Generator body; 101. First slot; 102. Threaded slot; 11. Fixing ring; 111. Internal thread; 112. Second slot; 12. Mounting plate; 13. Heat sink; 2. Fan blades; 3. Mounting frame; 31. Connecting column. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] Reference Figure 1-4The utility model provides an embodiment: a heat dissipation structure of a brushless double-fed AC generator, including a generator body 1, a first slot 101 is provided on the side wall of the generator body 1, a thread groove 102 is provided on the side wall of the generator body 1, a fixing ring 11 is provided on the side wall of the generator body 1, an internal thread 111 is provided on the inner wall of the fixing ring 11, a second slot 112 is provided on the inner wall of the fixing ring 11, and the second slot 112 is located at an end away from the internal thread 111, a mounting plate 12 is provided on the side wall of the generator body 1, two ends of the mounting plate 12 are respectively located in the first slot 101 and the second slot 112, a heat dissipation plate 13 is provided on the side wall of the mounting plate 12 away from the generator body 1, and a fan blade 2 is provided at the output end of the generator body 1.

[0023] This arrangement starts the generator body 1 to drive the fan blades 2 arranged at the output end to rotate, and then uses the wind energy output by the fan blades 2 to dissipate the heat of the generator body 1. Secondly, the heat dissipation plate 13 arranged on the side wall of the generator body 1 absorbs the heat generated by the generator body 1 and dissipates the heat, thereby increasing the heat dissipation method and increasing the heat dissipation effect of the generator body 1.

[0024] A mounting frame 3 is provided at the output end of the generator body 1, and the fan blades 2 are located in the mounting frame 3. A plurality of connecting columns 31 are provided at one end of the mounting frame 3 close to the generator body 1, and the end of the connecting column 3 away from the mounting frame 3 is fixedly connected to the generator body 1, so as to protect the fan blades 2 through the mounting frame 3 and the connecting column 31, and at the same time avoid accidental injury to the staff due to the high-speed rotation of the fan blades 2.

[0025] The mounting plate 12 is fan-shaped, and there are eight mounting plates 12 in total. The mounting plates 12 are made of aluminum and are used to surround the generator body 1 with eight mounting plates 12 , and then use the heat dissipation plates 13 on the side walls of the mounting plates 12 to dissipate heat.

[0026] Five heat sinks 13 are provided on the side wall of each mounting plate 12, and the heat sinks 13 are made of aluminum material, and are used to fully absorb the heat generated by the generator body 1 by utilizing the excellent thermal conductivity of aluminum, and then dissipate the heat.

[0027] The heat dissipation plate 13 is shorter than the mounting plate 12 , and is used to insert two ends of the mounting plate 12 into the first slot 101 and the second slot 112 respectively, so as to install the mounting plate 12 .

[0028] A total of six fan blades 2 are provided at the output end of the generator body 1 , which are used to increase the wind energy output by the fan blades 2 and accelerate the heat dissipation of the generator body 1 .

[0029] Working principle: first, rotate the fixing ring 11 so that the internal thread 111 slides in the thread groove 102, so that the fixing ring 11 rotates to the end close to the output end of the generator body 1, and then clamps one end of the mounting plate 12 into the first clamping groove 101, and then rotate the fixing ring 11 in the opposite direction, so that the second clamping groove 112 at one end of the fixing ring 11 clamps the other end of the mounting plate 12, and then starts the generator body 1 to drive the fan blades 2 arranged at the output end to rotate, and then uses the wind energy output by the fan blades 2 to dissipate the heat of the generator body 1, and then uses the heat dissipation plate 13 arranged on the side wall of the generator body 1 to absorb the heat generated by the generator body 1 and dissipate the heat, thereby increasing the heat dissipation method and increasing the heat dissipation effect of the generator body 1.

[0030] 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. A heat dissipation structure of a brushless double-fed AC generator, comprising a generator body (1), characterized in that: The generator body (1) has a first slot (101) on its side wall, a threaded slot (102) on its side wall, a fixing ring (11) on its side wall, an internal thread (111) on its inner side wall, a second slot (112) on its inner side wall, and the second slot (112) is located at an end away from the internal thread (111), a mounting plate (12) on its side wall, two ends of the mounting plate (12) are respectively located in the first slot (101) and the second slot (112), a heat sink (13) is provided on the side wall of the mounting plate (12) away from the generator body (1), and a fan blade (2) is provided at the output end of the generator body (1).

2. The heat dissipation structure of a brushless double-fed AC generator according to claim 1, characterized in that: The output end of the generator body (1) is provided with a mounting frame (3), the fan blades (2) are located in the mounting frame (3), a plurality of connecting columns (31) are provided at one end of the mounting frame (3) close to the generator body (1), and the end of the connecting column (31) away from the mounting frame (3) is fixedly connected to the generator body (1).

3. The heat dissipation structure of a brushless double-fed AC generator according to claim 1, characterized in that: The mounting plate (12) is fan-shaped, eight mounting plates (12) are provided in total, and the mounting plates (12) are components made of aluminum.

4. The heat dissipation structure of a brushless double-fed AC generator according to claim 1, characterized in that: Five heat dissipation plates (13) are provided on the side wall of each mounting plate (12), and the heat dissipation plates (13) are made of aluminum.

5. The heat dissipation structure of a brushless double-fed AC generator according to claim 1, characterized in that: The length of the heat dissipation plate (13) is shorter than the length of the mounting plate (12).

6. The heat dissipation structure of a brushless double-fed AC generator according to claim 1, characterized in that: A total of six fan blades (2) are arranged at the output end of the generator body (1).

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