Novel motor rotor punching sheet for multistage pump

Abstract

The utility model provides a novel motor rotor punching sheet for a multistage pump, and a punching sheet groove adopts an inverted pear-shaped design, so that a rotor can reach a required rotating speed more quickly when being started. Due to the special shape of the inverted pear-shaped groove, the distribution of a magnetic field can be more effectively utilized, so that the motor can obtain larger torque in the starting stage, and the starting capability is improved. Meanwhile, due to the design, the energy loss of the motor in the starting process is reduced, and the utilization efficiency of energy is improved. In addition, the design of the inverted pear-shaped groove also simplifies the processing technology of the punching sheet, the processing process is easier to control, and the requirements on equipment and technology are reduced.

Description

Technical Field

[0001] The utility model mainly relates to the field of motor design, and in particular to a novel rotor punching sheet for a multi-stage pump motor. Background Art

[0002] Multi-stage electric pumps, owing to their high efficiency and energy-saving properties, have been widely used in numerous industries. However, in practical application, they also face numerous challenges that need to be addressed. Voltage stability is particularly prominent and has become a key factor restricting improved performance and stable operation. The design of the rotor lamination slots has a significant impact on the performance of multi-stage electric pumps. Traditional rotor slots for multi-stage pump motors typically utilize pear-shaped slots or double-cage slots, which, to a certain extent, meet the operational requirements of multi-stage pump motors.

[0003] However, the pear-shaped slot design results in a larger area of ​​the rotor lamination slot near the outer circumference of the rotor lamination. However, due to the skin effect, the current is primarily concentrated on the slot surface during startup, rather than being effectively and evenly distributed within the slot, which in turn affects starting capability. The double-cage slot design offers significant advantages in enhancing starting capability, but its manufacturing process is relatively complex, resulting in higher processing costs. Utility Model Content

[0004] The utility model overcomes the defects in the prior art and solves the problem of poor starting ability of a horizontal multi-stage electric pump caused by unstable voltage during use, thereby improving the stability and reliability of the equipment.

[0005] Traditional motor rotor slots typically use pear-shaped slots or double squirrel-cage slots. While these designs can meet the motor's operating requirements to a certain extent, they have certain limitations in terms of starting performance and processing technology. The present invention, on the other hand, employs an inverted pear-shaped slot design, which breaks through the constraints of traditional slot shapes and provides the motor with superior performance.

[0006] A novel multi-stage pump motor rotor punching sheet is characterized in that it consists of a punching sheet body (1), a punching sheet groove (2), a punching sheet shaft hole (3), a positioning groove (4), and a positioning groove (5).

[0007] The punching groove (2) is composed of a first groove edge (6), a second groove edge (7), and a third groove edge (8) to form an "inverted pear-shaped" groove; wherein the radius of the first groove edge (6) is 1.45 mm, and the radius of the third groove edge (8) is 1.5 mm; wherein the arc radius distance between the first groove edge (6) and the third groove edge (8) is 11.9 mm.

[0008] The punching slots (2) are 16 evenly distributed around the circumference.

[0009] A punching shaft hole (3) is provided in the middle of the punching body (1) for connecting with a pump shaft; the positioning grooves (4) and (5) facilitate the positioning of the punching body (1).

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. The inverted pear-shaped slot design enables the rotor to reach the required speed more quickly during startup. Due to the special shape of the inverted pear-shaped slot, it can more effectively utilize the distribution of the magnetic field, allowing the motor to obtain greater torque during the startup phase, thereby improving the starting ability.

[0012] 2. The inverted pear-shaped slot design optimizes the slot shape and size to achieve more uniform current distribution within the slot, reducing the skin effect and improving slot utilization. This not only helps improve motor efficiency but also helps extend the motor's service life.

[0013] 3. This design also reduces energy loss during motor startup, improving energy efficiency. Furthermore, the inverted pear-shaped slot design simplifies the manufacturing process. Traditional double-cage slots require more complex processes and higher precision during processing, which undoubtedly increases production costs and manufacturing difficulty. The inverted pear-shaped slot design is simpler and clearer, making the processing easier to control and reducing the requirements for equipment and technology, thereby simplifying the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the rotor punching of the utility model.

[0015] Figure 2 This is a schematic diagram of the dimensions of the rotor punching of the utility model.

[0016] Among them: 1. Punch body; 2. Punch slot; 3. Punch shaft hole; 4. Positioning slot; 5. Positioning slot; 6. First slot edge; 7. Second slot edge; 8. Third slot edge. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, a novel rotor punching sheet for a multi-stage pump motor is characterized in that it consists of a punching sheet body 1, a punching sheet slot 2, a punching sheet shaft hole 3, a positioning slot 4, and a positioning slot 5.

[0018] like Figure 2As shown, the punching groove 2 is composed of a first groove edge 6, a second groove edge 7, and a third groove edge 8 to form an "inverted pear-shaped" groove; wherein the radius of the first groove edge 6 is 1.45 mm, and the radius of the third groove edge 8 is 1.5 mm; wherein the arc radius distance between the first groove edge 6 and the third groove edge 8 is 11.9 mm.

[0019] The punching slots 2 are evenly distributed in a circle in 16 pieces.

[0020] A punching shaft hole 3 is provided in the middle of the punching body 1 for connecting the pump shaft; the positioning grooves 4 and 5 facilitate the positioning of the punching body 1.

Claims

1. A new type of multi-stage pump motor rotor punching, characterized in that: The punching plate is composed of a punching plate body (1), a punching plate groove (2), a punching plate shaft hole (3), a positioning groove (4), and a positioning groove (5). The punching plate groove (2) is composed of a first groove edge (6), a second groove edge (7), and a third groove edge (8) to form an "inverted pear-shaped" groove; the radius of the first groove edge (6) is 1.45 mm, and the radius of the third groove edge (8) is 1.5 mm; and the arc radius distance between the first groove edge (6) and the third groove edge (8) is 11.9 mm.

2. A novel multi-stage pump motor rotor punching according to claim 1, characterized in that: The punching slots (2) are 16 evenly distributed around the circumference.

3. A novel multi-stage pump motor rotor punching according to claim 1, characterized in that: A punching shaft hole (3) is provided in the middle of the punching body (1) for connecting with a pump shaft; the positioning grooves (4) and (5) facilitate the positioning of the punching body (1).

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