High-concentricity stator punching sheet structure of generator
By adopting a high concentric stator punching structure in the generator stator, the problem of the stator and the interface end cap are solved, and cost saving and heat dissipation function are improved.
Patent Information
- Application Number
- CN202421344090.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The existing generator stator structure is prone to deviation when welding the seat post, resulting in the stator core being different from the interface end cap, increasing assembly difficulty and damage risk, and at the same time, the welding process increases cost and process complexity.
The stator punching structure with high concentricity is adopted, and the welding machine seat post is cancelled through the stator inner diameter processing cabinet stop, and the bosses and ventilation holes on the stator punching sheet are used to improve the concentricity and heat dissipation function of the stator.
The concentricity of the generator is improved, assembly difficulty and damage risk are reduced, cost is saved, and the heat dissipation function of the stator is improved by adding ventilation holes.
Smart Images
Figure CN222852056U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of generators, in particular to a stator punching structure with high concentricity of the generator. Background Art
[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by a turbine, a steam turbine, a diesel engine or other power machinery. The stator structure of the existing generator is to weld 6 machine base rods (such as Figure 2 Then fix the housing and the front cover that connects to other power sources to the base rod through bolts.
[0003] Although auxiliary tooling is used to position the machine base rod during welding, there will still be a certain deviation. After the interface end cover is subsequently installed, the motor stator core and the interface end cover are not concentric, which can easily cause damage to the motor. In addition, the machine base rod is evenly distributed around the core, and additional tooling is required to adjust the position during the stator wire embedding process, which increases the difficulty and time of wire embedding. Utility Model Content
[0004] (1) Technical solution
[0005] In order to solve the above technical problems, the utility model provides a stator punching structure with high concentricity for a generator, including a stator punching, wherein the stator punching is a circular sheet structure and a through hole is opened in the center, and four pairs of boss groups are evenly distributed in an annular manner on the outer periphery of the stator punching, each pair of the boss groups contains two bosses, the bosses protrude outward and have an arc-shaped outer periphery, a plurality of ventilation holes are provided on the bosses, and an irregular groove is provided in the middle between two bosses in each pair of the boss groups, and a stator core is formed after a plurality of the stator punchings are stacked, and the bosses on the outer periphery of the stator core are evenly distributed in an annular manner.
[0006] Preferably, the number of ventilation holes on each boss is at least 5 and they are equidistantly distributed.
[0007] Preferably, the inner wall of the irregular groove is arranged in a wave shape.
[0008] Preferably, the stator punching sheet is provided with a plurality of stator wire embedding slots.
[0009] Preferably, a plurality of stator wire embedding notches are evenly distributed in a ring shape along the inner edge of the stator punching sheet.
[0010] (2) Beneficial effects
[0011] The utility model provides a stator punching structure with high concentricity for a generator. Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The inner diameter of the stator is used to process the casing stop, which can greatly increase the concentricity of the entire generator and avoid the stator and rotor from grinding the bottom;
[0013] 2. Eliminate the welded machine base rod and add the connection to the stator punching sheet instead, which can save costs and reduce the impact of the process on the semi-finished product because there is one less process;
[0014] 3. Add ventilation holes on the punching boss to enhance the heat dissipation function of the stator. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the stator punching sheet in the prior art.
[0016] Figure 2 It is a structural schematic diagram of a stator core in the prior art.
[0017] Figure 3 It is a structural schematic diagram of the stator punching sheet in the utility model.
[0018] Figure 4 It is a structural schematic diagram of the stator core in the utility model.
[0019] The accompanying drawings are marked as: 1-stator core, 11-stator punching sheet, 2-boss, 21-ventilation hole, 3-irregular groove, 4-stator wire embedding notch, 5-machine base rod. DETAILED DESCRIPTION
[0020] The utility model is further described in conjunction with the accompanying drawings and embodiments.
[0021] Example
[0022] like Figure 2 , 3 As shown, the utility model describes a high concentricity stator sheet structure for a generator, comprising a stator sheet 11, wherein the stator sheet 11 is a circular sheet structure and a through hole is opened in the center, and four pairs of boss groups are evenly distributed in an annular manner on the outer periphery of the stator sheet 11, and each pair of the boss groups contains two bosses 2, and the bosses 2 protrude outward and have an arc-shaped outer periphery, and a plurality of ventilation holes 21 are provided on the boss 2, and an irregular groove 3 is provided in the middle between two bosses 2 in each pair of the boss groups, and a stator core 1 is formed after a plurality of the stator sheets 11 are stacked, and the bosses 2 on the outer periphery of the stator core 1 are evenly distributed in an annular manner.
[0023] The number of the ventilation holes 21 on each boss 2 is at least five and they are evenly distributed. Adding ventilation holes can enhance the heat dissipation function of the stator.
[0024] The inner wall of the irregular groove 3 is arranged in a wave shape. The stator punching sheet 11 is provided with a plurality of stator wire embedding notches 4 . The plurality of stator wire embedding notches 4 are evenly distributed in a ring shape along the inner edge of the stator punching sheet 11 .
[0025] By improving the layout of the existing stator punching sheets 11, bosses 2 are added in the four directions of the original circular outer ring of the stator. The boss 2 is in the shape of an outer arc, and a plurality of ventilation holes 21 are opened inside. An irregular groove 3 is provided in the middle of the boss 2, and specially designed stator wire embedding grooves 4 are evenly distributed inside. When stacking the punching sheets, each stack of a certain thickness is rotated at a specific angle to ensure that the bosses 2 are evenly distributed around the entire stator core 1, and then pressed into the circular casing. The casing stop is processed by positioning the inner diameter of the stator core 1.
[0026] The contents not described in detail in this specification belong to the prior art known to professionals in this field.
[0027] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but the utility model is not limited to these embodiments. It should be pointed out that for ordinary technicians in this field. Under the premise of not departing from the purpose of the utility model, any improvement made shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A stator punching structure with high concentricity for a generator, characterized in that: The invention comprises a stator punching sheet (11), wherein the stator punching sheet (11) is a circular sheet structure and has a through hole in the center. Four pairs of boss groups are evenly distributed in an annular manner on the outer periphery of the stator punching sheet (11), each pair of the boss groups contains two bosses (2), the bosses (2) protrude outwards and have an arc-shaped outer periphery, the bosses (2) are provided with a plurality of ventilation holes (21), and an irregular groove (3) is provided in the middle between the two bosses (2) in each pair of the boss groups. A plurality of the stator punching sheets (11) are stacked to form a stator core (1), and the bosses (2) on the outer periphery of the stator core (1) are evenly distributed in an annular manner.
2. A high concentricity stator punching structure for a generator according to claim 1, characterized in that: The number of the ventilation holes (21) on each boss (2) is at least five and they are evenly distributed.
3. A high concentricity stator punching structure for a generator according to claim 1, characterized in that: The inner wall of the irregular groove (3) is arranged in a wave shape.
4. A high concentricity stator punching structure for a generator according to claim 1, characterized in that: The stator punching sheet (11) is provided with a plurality of stator wire embedding slots (4).
5. A high concentricity stator punching structure for a generator according to claim 4, characterized in that: A plurality of stator wire embedding notches (4) are evenly distributed in a ring shape along the inner edge of the stator punching sheet (11).