Stator punching sheet

Abstract

The utility model relates to the technical field of generators, and discloses a stator punching sheet, which comprises a stator punching sheet body, the outer contour of the stator punching sheet body is provided with four arcs, and the appearance of the stator punching sheet body is provided with four cut edges. Eight 'W'-shaped weld grooves are circumferentially arranged on the outer contour of the stator punching sheet body, 30 'U'-shaped wire embedding grooves are circumferentially arranged on the inner contour of the stator punching sheet body, and a 'T'-shaped tooth portion is arranged between every two adjacent wire embedding grooves. According to the stator punching sheet, only a punching die of the stator punching sheet needs to be fixed, the original assembly mode of a generator is not changed, 30 U-shaped wire embedding grooves are circumferentially arranged on the inner contour, the utilization rate of materials is improved, the number of the U-shaped wire embedding grooves of the stator is changed, the efficiency of the generator can be improved, the waveform distortion rate is reduced, and the power generation quality is improved. Electromagnetic noise is reduced, reactive power consumption of the generator can be reduced, and output power of the generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a stator punching sheet. Background Art

[0002] At present, generators are widely used in industry, agriculture, commerce, construction, transportation and other fields. They generally have defects such as low efficiency and high energy consumption, and cannot meet the requirements of high efficiency and energy conservation and emission reduction.

[0003] The generator stator is constructed from stacked monolithic stator laminations, with windings embedded within the stator's winding slots. Different generator models utilize stator laminations of varying sizes. These stator laminations are key components in the generator, and their material, inner diameter, outer dimensions, slot size, and number of slots directly impact generator efficiency. Currently, the motors used in the generator market have the same outer contour diameters of 190mm, 204mm, 210mm, and 230mm, with four trimmed edges and eight "W"-shaped weld slots arranged circumferentially on the outer contour. However, the inner contour features 36 circumferentially arranged "U"-shaped winding slots, resulting in a greater number of stator slots and reduced material utilization. A "T"-shaped tooth section separates adjacent winding slots, with the "U"-shaped slot opening to the inner contour measuring 3.3mm. The width of the "T"-shaped tooth section is 4.3mm, resulting in weak tooth compensation flux density, which affects motor voltage stability. In summary, the wire embedding groove is set to 36 slots, the width of the "T"-shaped tooth is 4.3mm, and the diameter of the circular inner contour is Φ120mm and Φ138mm. The material utilization rate decreases and the magnetic field loss increases, resulting in a 10-15K increase in motor temperature rise, a decrease in motor efficiency of about 2%, a deterioration in waveform distortion rate, and reduced power generation quality. In addition, it is found that there is still a lot of electromagnetic noise during long-term use, and fuel consumption increases under the same power conditions, which cannot meet the requirements of high efficiency and energy conservation and emission reduction. Utility Model Content

[0004] The purpose of the present utility model is to provide a stator punching sheet to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a stator punching sheet, comprising a stator punching sheet body, wherein the outer contour of the stator punching sheet body has four arcs, and the outer shape of the stator punching sheet body has four cut edges;

[0006] There are 8 "W"-shaped weld slots arranged circumferentially on the outer contour of the stator punching body, and 30 "U"-shaped wire embedding slots arranged circumferentially on the inner contour of the stator punching body, with a "T"-shaped tooth portion between two adjacent wire embedding slots.

[0007] As a further improvement of the present invention, the diameter of the stator punching body is Φ190mm, the arc diameter of the outer contour of the stator punching body is Φ190mm, the size of the "U"-shaped wire embedding groove and the inner contour opening is 3.0mm, the width of the "T"-shaped tooth portion is 5.3mm, and the diameter of the inner contour of the stator punching body is Φ120mm.

[0008] As a further improvement of the present invention, the diameter of the stator punching body is Φ204mm, the arc diameter of the outer contour of the stator punching body is Φ204mm, the size of the "U"-shaped wire embedding groove and the inner contour opening is 3.0mm, the width of the "T"-shaped tooth portion is 5.3mm, and the diameter of the inner contour of the stator punching body is Φ120mm.

[0009] As a further improvement of the present invention, the diameter of the stator punching body is Φ210mm, the arc diameter of the outer contour of the stator punching body is Φ210mm, the size of the "U"-shaped wire embedding groove and the inner contour opening is 3.0mm, the width of the "T"-shaped tooth portion is 5.3mm, and the diameter of the inner contour of the stator punching body is Φ120mm.

[0010] As a further improvement of the present invention, the diameter of the stator punching body is Φ230mm, the arc diameter of the outer contour of the stator punching body is Φ230mm, the size of the "U"-shaped wire embedding groove and the inner contour opening is 3.4mm, the width of the "T"-shaped tooth portion is 7.0mm, and the diameter of the inner contour of the stator punching body is Φ138mm.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The stator laminations only require a custom stamping die, without changing the original generator assembly method. Thirty "U"-shaped wire slots are arranged circumferentially on the inner contour, improving material utilization. Changing the number of "U"-shaped wire slots in the stator can improve generator efficiency, reduce waveform distortion, and enhance power generation quality. This reduction in electromagnetic noise can reduce the generator's reactive power consumption and increase its output power. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of a stator punching sheet of the utility model.

[0015] In the figure: 1. Stator punching body; 2. "W"-shaped weld groove; 3. "U"-shaped wire embedding groove; 4. "T"-shaped tooth part. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 are within the scope of protection of the present invention.

[0017] Example 1

[0018] See also Figure 1 The utility model provides a stator punching sheet, comprising a stator punching sheet body 1, wherein the outer contour of the stator punching sheet body 1 has four arcs, and the outer shape of the stator punching sheet body 1 has four cutting edges;

[0019] The outer contour of the stator punching body 1 is provided with 8 "W"-shaped weld slots 2 arranged circumferentially, and the inner contour of the stator punching body 1 is provided with 30 "U"-shaped wire embedding slots 3 arranged circumferentially, with a "T"-shaped tooth portion 4 between two adjacent wire embedding slots.

[0020] As a further improvement of the present invention, the diameter of the stator punching body 1 is Φ190mm, the arc diameter d1 of the outer contour of the stator punching body 1 is Φ190mm, the "U"-shaped wire embedding groove 3 and the inner contour opening size d2 are 3.0mm, the width d3 of the "T"-shaped tooth portion 4 is 5.3mm, and the diameter d4 of the inner contour of the stator punching body is Φ120mm.

[0021] Example 2

[0022] A stator punching sheet includes a stator punching sheet body 1, wherein the outer contour of the stator punching sheet body 1 has four arcs and the outer shape of the stator punching sheet body 1 has four cut edges;

[0023] The outer contour of the stator punching body 1 is provided with 8 "W"-shaped weld slots 2 arranged circumferentially, and the inner contour of the stator punching body 1 is provided with 30 "U"-shaped wire embedding slots 3 arranged circumferentially, with a "T"-shaped tooth portion 4 between two adjacent wire embedding slots.

[0024] The diameter of the stator punching body 1 is Φ204mm, the arc diameter d1 of the outer contour of the stator punching body 1 is Φ204mm, the "U"-shaped wire embedding groove 3 and the inner contour opening size d2 are 3.0mm, the width d3 of the "T"-shaped tooth portion 4 is 5.3mm, and the inner contour diameter d4 of the stator punching body is Φ120mm

[0025] Example 3

[0026] A stator punching sheet includes a stator punching sheet body 1, wherein the outer contour of the stator punching sheet body 1 has four arcs and the outer shape of the stator punching sheet body 1 has four cut edges;

[0027] The outer contour of the stator punching body 1 is provided with 8 "W"-shaped weld slots 2 arranged circumferentially, and the inner contour of the stator punching body 1 is provided with 30 "U"-shaped wire embedding slots 3 arranged circumferentially, with a "T"-shaped tooth portion 4 between two adjacent wire embedding slots.

[0028] As a further improvement of the present invention, the diameter of the stator punching body 1 is Φ210mm, the arc diameter d1 of the outer contour of the stator punching body 1 is Φ210mm, the "U"-shaped wire embedding groove 3 and the inner contour opening size d2 are 3.0mm, the width d3 of the "T"-shaped tooth portion 4 is 5.3mm, and the diameter d4 of the inner contour of the stator punching body is Φ120mm.

[0029] Example 4

[0030] A stator punching sheet includes a stator punching sheet body 1, wherein the outer contour of the stator punching sheet body 1 has four arcs and the outer shape of the stator punching sheet body 1 has four cut edges;

[0031] The outer contour of the stator lamination body 1 is provided with 8 "W"-shaped weld slots 2 arranged circumferentially, and the inner contour of the stator lamination body 1 is provided with 30 "U"-shaped wire embedding slots 3 arranged circumferentially, with a "T"-shaped tooth portion 4 between two adjacent wire embedding slots;

[0032] As a further improvement of the present invention, the diameter of the stator punching body 1 is Φ230mm, the arc diameter d1 of the outer contour of the stator punching body 1 is Φ230mm, the "U"-shaped wire embedding groove 3 and the inner contour opening size d2 are 3.4mm, the width d3 of the "T"-shaped tooth portion 4 is 7.0mm, and the diameter d4 of the inner contour of the stator punching body is Φ138mm.

[0033] Only the stamping die for the stator punching sheets needs to be customized, without changing the original assembly method of the generator. Thirty "U"-shaped wire slots are arranged circumferentially on the inner contour, improving material utilization. Changing the number of "U"-shaped wire slots in the stator can improve the efficiency of the generator, reduce the waveform distortion rate, and enhance the power generation quality. Reduced electromagnetic noise can also reduce the generator's reactive power consumption and increase the generator's output power.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stator punching sheet, comprising a stator punching sheet body (1), characterized in that: The outer contour of the stator punching body (1) has four arcs, and the outer shape of the stator punching body (1) has four cut edges; The stator punching body (1) has 8 "W"-shaped weld seam grooves (2) arranged circumferentially on its outer contour, and 30 "U"-shaped wire embedding grooves (3) arranged circumferentially on its inner contour, with a "T"-shaped tooth portion (4) between two adjacent wire embedding grooves.

2. A stator sheet according to claim 1, characterized in that: The diameter of the stator punching body (1) is Φ190 mm, the arc diameter of the outer contour of the stator punching body (1) is Φ190 mm, the size of the "U"-shaped wire embedding groove (3) and the inner contour opening is 3.0 mm, the width of the "T"-shaped tooth portion (4) is 5.3 mm, and the diameter of the inner contour of the stator punching body is Φ120 mm.

3. A stator punching sheet according to claim 1, characterized in that: The diameter of the stator punching body (1) is Φ204 mm, the arc diameter of the outer contour of the stator punching body (1) is Φ204 mm, the size of the "U"-shaped wire embedding groove (3) and the inner contour opening is 3.0 mm, the width of the "T"-shaped tooth portion (4) is 5.3 mm, and the diameter of the inner contour of the stator punching body is Φ120 mm.

4. A stator punching sheet according to claim 1, characterized in that: The diameter of the stator punching body (1) is Φ210 mm, the arc diameter of the outer contour of the stator punching body (1) is Φ210 mm, the size of the "U"-shaped wire embedding groove (3) and the inner contour opening is 3.0 mm, the width of the "T"-shaped tooth portion (4) is 5.3 mm, and the diameter of the inner contour of the stator punching body is Φ120 mm.

5. A stator punching sheet according to claim 1, characterized in that: The diameter of the stator punching body (1) is Φ230 mm, the arc diameter of the outer contour of the stator punching body (1) is Φ230 mm, the size of the "U"-shaped wire embedding groove (3) and the inner contour opening is 3.4 mm, the width of the "T"-shaped tooth portion (4) is 7.0 mm, and the diameter of the inner contour of the stator punching body is Φ138 mm.

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