Synchronous motor magnetic pole with waterproof function

Abstract

The utility model discloses a synchronous motor magnetic pole with a waterproof function, which relates to the technical field of synchronous motor magnetic poles, and comprises a magnetic pole body arranged along the vertical direction, an excitation winding wound on the magnetic pole body, and a protection sheet which corresponds to the magnetic pole body in height and has two ends connected in a matched manner to form a protection ring, the magnetic pole body and the magnetic pole gasket are positioned in the protective ring; the airbag ball is arranged on the outer surface of the protective sheet; the two ends of the protection sheet and the two ends of the waterproof sheet are connected in a welded mode, the stability of connection of the protection sheet and the waterproof sheet can be improved, matching of the protection sheet and the waterproof sheet can be improved, the magnetic pole body and the excitation winding can be protected, and therefore the waterproof effect can be achieved; at the moment, the excitation winding can extrude the protection sheet and the air bag ball to generate deformation, and the problem that the waterproof structure of the protection sheet and the waterproof sheet cracks can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of synchronous motor magnetic pole technology, specifically to synchronous motor magnetic poles with waterproof function. Background Technology

[0002] In recent years, as synchronous motors have been used more and more in harsh working environments, there have been more and more cases of motor insulation to ground, low resistance, or even burnout caused by factors such as water ingress and moisture. Therefore, improving the waterproof performance of the internal structure of the motor is an inevitable choice to ensure the long-term safe operation of the motor and reduce losses. As a result, synchronous motor magnetic poles with waterproof function have emerged.

[0003] For example, an existing Chinese patent (publication number: CN203481947U) discloses a waterproof synchronous motor pole. The characteristic of this waterproof pole structure is that the coil is directly wound on the pole core, sealed with epoxy resin, and then baked and cured, integrating the pole core and coil to achieve waterproofing. The pole can thus provide moisture and water resistance, improving the reliability and lifespan of the motor when operating in harsh conditions such as coastal or humid environments.

[0004] The waterproof synchronous motor magnetic poles designed above still have some drawbacks in use: Although the waterproof synchronous motor magnetic poles can be sealed with epoxy resin and cured by baking to integrate the magnetic pole core and coil and achieve waterproofing, the synchronous motor magnetic poles generate heat during use. This causes the epoxy resin sealant to crack due to thermal expansion and contraction after curing. Alternatively, the magnetic pole body may expand due to thermal expansion, which can also cause the epoxy resin sealant to crack.

[0005] To address these issues, we designed waterproof synchronous motor poles. Utility Model Content

[0006] The purpose of this invention is to provide waterproof synchronous motor magnetic poles to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides a waterproof synchronous motor magnetic pole, comprising a magnetic pole body arranged vertically and an excitation winding wound around the magnetic pole body, and further comprising...

[0008] The protective sheet is height-corresponding to the magnetic pole body, and its two ends are connected to form a protective ring. The magnetic pole body and the magnetic pole pad are both located inside the protective ring.

[0009] The airbag is placed on the outer surface of the protective sheet and is filled with gas.

[0010] The waterproof sheet is of the same height as the protective sheet, and the two ends are connected to form a waterproof ring. The magnetic pole body, magnetic pole pad, and protective sheet are all inside the waterproof ring.

[0011] Furthermore, there are multiple airbags, which are installed at equal intervals around the perimeter of the protective sheet.

[0012] Furthermore, the gas filled inside the airbag is nitrogen.

[0013] Furthermore, the protective sheet is coated with epoxy resin on the side away from the airbag bulb, and the epoxy resin abuts against the excitation winding.

[0014] Furthermore, magnetic pole pads are provided at the top and bottom of the magnetic pole body, and the opposite sides of the two magnetic pole pads abut against the top and bottom of the protective sheet and the waterproof sheet, respectively.

[0015] Furthermore, both ends of the protective sheet and both ends of the waterproof sheet are welded.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: by welding the two ends of the protective sheet and the waterproof sheet together, the stability of the connection between the protective sheet and the waterproof sheet can be improved, and the cooperation between the protective sheet and the waterproof sheet can be improved. This can protect the magnetic pole body and the excitation winding, thereby achieving a waterproof effect. In addition, when the magnetic pole body and the excitation winding are subjected to thermal expansion and contraction, the excitation winding can compress the protective sheet and the airbag ball to cause deformation, which can avoid the problem of cracking of the waterproof structure of the protective sheet and the waterproof sheet.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the gas inside the airbag to nitrogen, which is an inert gas, not easily combustible, and has a large molecular weight and stable chemical properties, the airbag is not easily affected by temperature and will expand on its own; by setting epoxy resin, the excitation winding can be sealed, and since the epoxy resin only abuts against the excitation winding and moves with the protective sheet, the problem of cracking can be avoided while sealing the excitation winding. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the internal half-section of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the overall external structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the external excitation winding of this utility model.

[0021] In the diagram: 1. Magnetic pole body; 2. Magnetic pole pad; 3. Excitation winding; 4. Protective sheet; 5. Airbag ball; 6. Waterproof sheet; 7. Epoxy resin. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a waterproof synchronous motor magnetic pole, including a magnetic pole body 1 arranged vertically and an excitation winding 3 wound around the magnetic pole body 1, and further including...

[0024] The protective plate 4 is height-corresponding to the magnetic pole body 1, and its two ends are connected to form a protective ring. The magnetic pole body 1 and the magnetic pole pad 2 are both located inside the protective ring.

[0025] The airbag 5 is disposed on the outer surface of the protective sheet 4 and is filled with gas.

[0026] The waterproof sheet 6 is corresponding in height to the protective sheet 4, and the two ends are connected to form a waterproof ring. The magnetic pole body 1, the magnetic pole pad 2, and the protective sheet 4 are all inside the waterproof ring. The top and bottom of the magnetic pole body 1 are provided with magnetic pole pads 2. The opposite sides of the two magnetic pole pads 2 abut against the top and bottom of the protective sheet 4 and the waterproof sheet 6, respectively.

[0027] In practice, the protective sheet 4 and the waterproof sheet 6 work together to protect the magnetic pole body 1 and the excitation winding 3, thereby achieving a waterproof effect. In addition, when the magnetic pole body 1 and the excitation winding 3 are subjected to thermal expansion and contraction, the excitation winding 3 can compress the protective sheet 4 and the airbag ball 5 to cause deformation, which can prevent the waterproof structure of the protective sheet 4 and the waterproof sheet 6 from cracking.

[0028] See Figure 1-3 There are multiple airbags 5, which are installed at equal intervals around the perimeter of the protective sheet 4. The equal spacing of the multiple airbags 5 ensures that the force on the protective sheet 4 is uniform, avoiding the problem of deformation of the protective sheet 4.

[0029] See Figure 1-3 The gas inside the airbag bulb 5 is nitrogen. By setting the gas inside the airbag bulb 5 to nitrogen, which is an inert gas, not easily combustible, has a large molecular weight, and is chemically stable, the airbag bulb 5 is not easily affected by temperature and will expand on its own.

[0030] See Figure 1-3 The protective plate 4 is coated with epoxy adhesive 7 on the side away from the airbag bulb 5, and the epoxy adhesive 7 abuts against the excitation winding 3. By setting the epoxy adhesive 7, the excitation winding 3 can be sealed. Since the epoxy adhesive 7 only abuts against the excitation winding 3 and moves with the protective plate 4, it can seal the excitation winding 3 while avoiding the problem of cracking.

[0031] It should be noted that epoxy adhesive 7, after curing, forms a strong and dense adhesive layer. This structure gives it excellent waterproof and moisture-proof capabilities. Its waterproof performance is mainly due to the epoxy groups in the epoxy resin molecules. These groups have good hydrophobicity and can effectively block the penetration of water. Since epoxy adhesive 7 is existing technology, it will not be discussed further.

[0032] See Figure 1-3 Both ends of the protective sheet 4 and both ends of the waterproof sheet 6 are welded together. By welding the two ends of the protective sheet 4 and the waterproof sheet 6, the stability of the connection between the protective sheet 4 and the waterproof sheet 6 can be improved.

[0033] Working principle: In use, by welding the two ends of the protective sheet 4 and the waterproof sheet 6 together, the stability of the connection between the protective sheet 4 and the waterproof sheet 6 can be improved. Through the cooperation of the protective sheet 4 and the waterproof sheet 6, the magnetic pole body 1 and the excitation winding 3 can be protected, thereby achieving a waterproof effect. In addition, when the magnetic pole body 1 and the excitation winding 3 are subjected to thermal expansion and contraction, the excitation winding 3 can compress the protective sheet 4 and the airbag ball 5 to cause deformation, which can prevent the waterproof structure of the protective sheet 4 and the waterproof sheet 6 from cracking.

[0034] By setting the gas inside the airbag bulb 5 to nitrogen, which is an inert gas that is not easily combustible, has a large molecular weight, and is chemically stable, the airbag bulb 5 is not easily affected by temperature and will expand on its own.

[0035] By setting epoxy adhesive 7, the excitation winding 3 can be sealed. Since epoxy adhesive 7 only abuts against the excitation winding 3 and moves with the protective sheet 4, it can seal the excitation winding 3 while avoiding cracking.

Claims

1. A magnetic pole of a synchronous motor with waterproof function, comprising a magnetic pole body (1) arranged in a vertical direction and an excitation winding (3) wound on the magnetic pole body (1), characterized in that, Also include, The protection sheet (4) height corresponds to the magnetic pole body (1), and both ends of the matching connection form a protective ring, the magnetic pole body (1) and the magnetic pole gasket (2) are located in the protective ring; Air bag ball (5), set in the outer surface of the protection sheet (4), and the inside is filled with gas; Waterproof sheet (6), the height corresponds to the protection sheet (4), and both ends of the matching connection form a waterproof ring, the magnetic pole body (1), the magnetic pole gasket (2) and the protection sheet (4) are in the waterproof ring.

2. The magnetic pole of the synchronous machine with waterproof function according to claim 1, characterized in that: The number of said air bag ball (5) is multiple, multiple said air bag ball (5) equidistantly installed in the protection sheet (4) outside a week.

3. The magnetic pole of a synchronous machine with a waterproof function according to claim 1, characterized in that: The gas filled in the air bag ball (5) is nitrogen.

4. The magnetic pole of a synchronous machine with a waterproof function according to claim 1, characterized in that: The side of the protection sheet (4) away from the air bag ball (5) is coated with epoxy glue (7), and the epoxy glue (7) is in contact with the excitation winding (3).

5. The magnetic pole of a synchronous machine with a waterproof function according to claim 1, characterized in that: The top and bottom of the magnetic pole body (1) are provided with magnetic pole gasket (2), and the opposite sides of the two magnetic pole gasket (2) are respectively in contact with the top and bottom of the protection sheet (4) and the waterproof sheet (6).

6. The magnetic pole of a synchronous machine with a waterproof function according to claim 1, characterized in that: Both ends of the protection sheet (4) and the waterproof sheet (6) are welded.

Images