Stator punching sheet structure of high-voltage motor with high rotating speed and low vibration

Abstract

The utility model relates to a high-rotating-speed low-vibration high-voltage motor stator punching sheet structure, which comprises a stator punching sheet, and the specific structure of the stator punching sheet is as follows: the stator punching sheet comprises a punching sheet body with an annular structure, the excircle of the punching sheet body is provided with a plurality of outer special-shaped grooves which are uniformly distributed at intervals, and a round hole with a notch is arranged between two adjacent outer special-shaped grooves. A plurality of grooves are formed in the punching sheet body, each groove is of an omega-shaped structure, the inner circle of the punching sheet body is provided with a plurality of inner special-shaped grooves which are uniformly distributed at intervals, the inner special-shaped grooves are of rectangular structures, and the inner wall surfaces of the inner special-shaped grooves are provided with symmetrical inner concave structures. Through the unique design of the high-voltage dipolar motor stator punching sheet structure, the high-voltage dipolar motor stator punching sheet structure can be suitable for application occasions with high rotating speed and low vibration, and the working reliability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stator punching sheets, in particular to a high-speed and low-vibration high-voltage motor stator punching sheet structure. Background Art

[0002] At present, the high-voltage motors commonly used in compressors in water pumps are mostly two-pole motors, 50Hz, 3000 rpm. However, the high-voltage motors used in some high-requirement water pumps and compressors are mostly two-pole, 60Hz, 3600 rpm. And the power requirements are also getting higher and higher, up to 3000kW. At this time, the motor required not only needs to ensure appropriate temperature rise, but also needs the vibration value to meet the requirements of standard IEC 60034-14. Therefore, the vibration value of high-power and high-speed motors should meet the standard requirements, and the motor needs to be specially designed, and it cannot be treated completely as a 50Hz two-pole motor. The primary factor of vibration comes from stator vibration. The stronger the stator core, the more stable the magnetic field transmitted to the rotor, and the smaller the vibration value of the motor. Therefore, as the core component of the core, the structural design of the motor's stator punching is particularly important.

[0003] For example, a two-pole motor with a speed of 3600 rpm, a power of 2240kW, and a voltage of 10kV is specially designed for stator punching to meet the vibration requirements of high speed. After the motor is produced, a vibration test is carried out, and the motor vibration value index is qualified at one time, which meets the requirements of standard IEC 60034-14.

[0004] At present, ordinary stator punching sheets in the existing technology cannot meet the requirements. In order to solve the vibration problem of high-voltage and high-speed motors, a stator punching sheet structure is specially designed. Its structure has the function of making the core structure more compact and firm, thereby reducing the vibration of the motor to meet the standard requirements. Utility Model Content

[0005] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a high-speed and low-vibration high-voltage motor stator punching structure, thereby ensuring that the stator core has higher rigidity, is not prone to vibration, and meets the use requirements.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A high-speed, low-vibration high-voltage motor stator punching structure comprises a stator punching, wherein the stator punching comprises a punching body in an annular structure, wherein the outer circle of the punching body is provided with a plurality of evenly spaced external special-shaped grooves, a circular hole with a notch is provided between two adjacent external special-shaped grooves to form a groove, each groove presents an "Ω"-shaped structure, and the inner circle of the punching body is provided with a plurality of evenly spaced internal special-shaped grooves, the internal special-shaped grooves present a rectangular structure, and the inner wall surface of the internal special-shaped grooves is provided with a symmetrical inner concave structure.

[0008] As a further improvement of the above technical solution:

[0009] The stator punching sheet is an integrated structure.

[0010] The material of the stator punching sheet is silicon steel sheet 50W470.

[0011] The installation structure of the stator punching sheet is as follows: a rib plate is inserted horizontally into the outer special-shaped groove, and the rib plate is welded to the stator punching sheet; a pull rod is inserted horizontally into the groove, and stator pressure rings are respectively arranged at both ends of the stator punching sheet, and nuts are used to lock the two ends of the pull rod.

[0012] The rib plate adopts a long strip structure.

[0013] The stator pressure ring and rib plate are both made of Q235A steel plate.

[0014] The material of the pull rod is No. 35 round steel.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model has a compact and reasonable structure and is easy to operate. Through the unique design of the stator punching structure of the high-voltage two-pole motor, it is suitable for high-speed and low-vibration applications. It can withstand a high speed of 3000-3600 rpm and is not only suitable for 50Hz two-pole motors, but also for the stator punching structure of 60Hz two-pole high-voltage motors, and has good working reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an application diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model.

[0019] Figure 3 for Figure 2 A partial enlarged view of part I in the middle.

[0020] Figure 4 for Figure 2 A partial enlarged view of part II.

[0021] Figure 5 for Figure 2 A partial enlarged view of part III.

[0022] Among them: 1. stator punching sheet; 2. stator pressure ring; 3. tie rod; 4. rib plate;

[0023] 101. Punch body; 102. External special-shaped groove; 103. Internal special-shaped groove; 104. Concave groove. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0025] like Figure 1-Figure 5 As shown, the high-speed and low-vibration high-voltage motor stator punching structure of this embodiment includes a stator punching sheet 1. The specific structure of the stator punching sheet 1 is: it includes a punching sheet body 101 with an annular structure, the outer circle of the punching sheet body 101 is provided with a plurality of evenly spaced external special-shaped grooves 102, a circular hole with a notch is provided between two adjacent external special-shaped grooves 102 to form a groove 104, each groove 104 is in an "Ω"-shaped structure, the inner circle of the punching sheet body 101 is provided with a plurality of evenly spaced internal special-shaped grooves 103, the internal special-shaped grooves 103 are in a rectangular structure, and the inner wall surface of the internal special-shaped grooves 103 is provided with a symmetrical concave structure.

[0026] The stator punching sheet 1 is an integrated structure.

[0027] The material of the stator punching sheet 1 is silicon steel sheet 50W470.

[0028] The installation structure of the stator punching sheet 1 is as follows: a rib plate 4 is inserted transversely into the outer special-shaped groove 102, and the rib plate 4 is welded to the stator punching sheet 1; a pull rod 3 is inserted transversely into the groove 104, and stator pressure rings 2 are respectively arranged at both ends of the stator punching sheet 1, and nuts are used to lock the two ends of the pull rod 3.

[0029] The rib plate 4 adopts a long strip structure.

[0030] The specific connection relationship and function of the high-speed and low-vibration high-voltage motor stator punching structure described in the utility model are as follows:

[0031] The outer circle of the stator punching sheet 1 is provided with an outer shaped groove 102, as shown in Figure 3 As shown, the dimension L1 is not less than 4 mm, the dimension L2 is not less than 6 mm, and the angle A is 45 degrees. The above dimensions can ensure that the stator punching sheet 1 and the rib plate 4 are in reliable contact.

[0032] A circular hole with a notch near the outer circle of the stator punching sheet 1 forms a groove 104. Specifically, the groove 104 has an "Ω"-shaped structure, as shown in the enlarged view ΙΙ. Figure 4 As shown, the L3 size is 2.5 mm, which ensures that the punching sheet is flat and not easily deformed. The L4 size is not less than 1.5 mm, which ensures that the pull rod 3 is firmly in the round hole. The R size is not less than 12 mm, and the specific size is determined according to the size of the punching sheet stacking pressure to ensure that the core is firmly stacked and does not break. The above dimensions can ensure that the stator punching sheet 1 is in reliable contact with the pull rod 3.

[0033] The inner circle of the stator punching sheet 1 is provided with an inner special-shaped groove 103, as shown in Figure 5As shown, the size of L5 is not less than 3 mm to ensure the strength of the slot of the stator punching sheet 1, the size of L6 is 1.5-2 mm, and the size of L7 is not less than 3 mm. The sizes of L6 and L7 ensure that the stator coil is in close contact in the slot, and the coil is more secure after VPI varnishing.

[0034] The material of the stator punching sheet 1 is silicon steel sheet 50W470. If you want to reduce the motor loss, you can use low-loss silicon steel sheet.

[0035] A rib plate 4 is inserted transversely into the outer special-shaped groove 102 of the stator punching sheet 1, and the rib plate 4 is welded to the stator punching sheet 1, and the welding reliability is strong; a pull rod 3 is inserted transversely into the groove 104, and a stator pressure ring 2 is respectively provided at both ends of the stator punching sheet 1, and nuts are used to lock the two ends of the pull rod 3, so that the overall rigidity of the core is higher.

[0036] The rib plate 4 is in a long strip structure, such as a rectangular structure, and has a relatively long length.

[0037] The material of the stator pressing ring 2 is Q235A steel plate.

[0038] The material of the pull rod 3 is No. 35 round steel.

[0039] The material of the rib plate 4 is Q235A steel plate.

[0040] The utility model can ensure that the stator core has higher rigidity and is not prone to vibration.

[0041] The utility model broadens the application scope of the product, and is not only suitable for 50Hz two-pole motors, but also for 60Hz two-pole high-voltage motors, and even for high-power high-speed four-pole high-voltage motors, thereby improving the competitiveness of the product.

[0042] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A high-speed, low-vibration high-voltage motor stator punching structure, Features: The invention comprises a stator punching sheet (1), wherein the specific structure of the stator punching sheet (1) is as follows: the punching sheet body (101) is annularly structured, the outer circle of the punching sheet body (101) is provided with a plurality of evenly spaced external special-shaped grooves (102), a circular hole with a notch is provided between two adjacent external special-shaped grooves (102) to form a groove (104), each groove (104) is in an "Ω"-shaped structure, the inner circle of the punching sheet body (101) is provided with a plurality of evenly spaced internal special-shaped grooves (103), the internal special-shaped grooves (103) are in a rectangular structure, and the inner wall surface of the internal special-shaped groove (103) is provided with a symmetrical inner concave structure.

2. A high-speed, low-vibration high-voltage motor stator punching structure as claimed in claim 1, Features: The stator punching sheet (1) is an integrated structure.

3. A high-speed, low-vibration high-voltage motor stator punching structure as claimed in claim 1, Features: The material of the stator punching sheet (1) is silicon steel sheet 50W470.

4. A high-speed, low-vibration high-voltage motor stator punching structure as claimed in claim 1, Features: The installation structure of the stator punching sheet (1) is as follows: a rib plate (4) is inserted transversely into the outer special-shaped groove (102), and the rib plate (4) is welded to the stator punching sheet (1); a pull rod (3) is inserted transversely into the groove (104), and stator pressure rings (2) are respectively arranged at both ends of the stator punching sheet (1), and nuts are used to lock the two ends of the pull rod (3).

5. A high-speed, low-vibration high-voltage motor stator punching structure as claimed in claim 4, Features: The rib plate (4) adopts a long strip structure.

6. A high-speed, low-vibration high-voltage motor stator punching structure as claimed in claim 4, Features: The stator pressing ring (2) and the rib plate (4) are both made of Q235A steel plate.

7. A high-speed, low-vibration high-voltage motor stator punching structure as claimed in claim 4, Features: The material of the pull rod (3) is No. 35 round steel.

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