High-voltage three-phase asynchronous motor with overvoltage protector

Abstract

The utility model discloses a high-voltage three-phase asynchronous motor with an overvoltage protector, which relates to the technical field of high-voltage three-phase asynchronous motors, and comprises a shell, a motor body is arranged in the shell, an output end is arranged at the upper end of the motor body, a power supply end is fixedly arranged on one side of the outer surface of the motor body, and an overvoltage protector is arranged at the other side of the outer surface of the motor body. The high-voltage three-phase asynchronous motor with the overvoltage protector comprises a shell, a power supply end is arranged at one end of the shell, a through groove used in cooperation with the power supply end is formed in one side of the outer surface of the shell, a voltage protector body is arranged on one side of the shell, and a connecting end is arranged at one end of the voltage protector body. The voltage protector monitors the voltage input to the motor in real time, and once overvoltage occurs in a power grid, the voltage protector limits or bypasses the overhigh voltage through an internal protection circuit to protect the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage three-phase asynchronous motors, and specifically relates to a high-voltage three-phase asynchronous motor with an overvoltage protector. Background Art

[0002] With the development of the industrial revolution, the scale of industrial production has been continuously expanding, and the demand for power equipment has been increasing day by day. In many industrial fields, such as mining, metallurgy, and textile, a more powerful and stable power source is required to drive large-scale mechanical equipment. The high-voltage three-phase asynchronous motor came into being. It can meet the high-power demand and adapt to the requirements of large-scale industrial production. In the metallurgical industry, equipment such as blast furnace blowing and rolling mills requires high-power motors to drive. The three-phase asynchronous motor can provide sufficient torque and power under high-voltage conditions to ensure the smooth progress of the production process.

[0003] However, the following problems still exist in the prior art:

[0004] Most of the existing high-voltage three-phase asynchronous motors lack a special overvoltage protection device and cannot monitor the voltage input to the motor in real time. This makes the motor in a relatively vulnerable state when facing abnormal situations such as switching overvoltage or lightning overvoltage in the power grid. In some industrial production environments, due to the lack of overvoltage protection measures, when there is an instantaneous overvoltage caused by switch operation in the power grid, the excessive voltage will directly act on the motor, easily causing damage to the insulation of the motor winding and shortening the service life of the motor.

[0005] In view of the above problems, the inventor proposes a high-voltage three-phase asynchronous motor with an overvoltage protector to solve the above problems. Content of the Utility Model

[0006] In order to solve the problem of the lack of a special overvoltage protection device; the purpose of the utility model is to provide a high-voltage three-phase asynchronous motor with an overvoltage protector.

[0007] To solve the above technical problems, the present utility model adopts the following technical solutions: A high-voltage three-phase asynchronous motor with an overvoltage protector, including a housing. Inside the housing is provided a motor body, the outer surface of the motor body fits with the inner surface of the housing. The motor body is specifically a high-voltage three-phase asynchronous motor. At the upper end of the motor body is provided an output end, and on one side of the outer surface of the motor body is fixedly provided a power supply end. On one side of the outer surface of the housing is opened a through groove for cooperating with the power supply end, and on one side of the housing is provided an overvoltage protector body. One end of the overvoltage protector body is provided with a connection end, and at one end of the connection end is opened a mating groove for cooperating with the power supply end. The overvoltage protector body is electrically connected to the motor body through the power supply end and the connection end to protect the high-voltage three-phase asynchronous motor. At the lower end of the overvoltage protector body is provided a bracket, the upper end of the bracket is connected to the overvoltage protector body through bolts, and one end of the bracket is fixedly connected to the housing.

[0008] Preferably, on the inner surface of the housing is opened a toothed groove for cooperating with the outer surface of the motor body. At the lower side of the outer surface of the motor body are fixedly provided a plurality of positioning grooves distributed in a ring shape, and at the lower side of the inner surface of the housing are fixedly provided a plurality of positioning posts for cooperating with the positioning grooves. Both the positioning posts and the positioning grooves are six in number.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. By setting an overvoltage protector at the power access of the motor, the present utility model can monitor the voltage input to the motor in real time. Once an overvoltage situation occurs in the power grid, such as switching overvoltage or lightning overvoltage, etc., the overvoltage protector can respond quickly and limit or bypass the excessive voltage through the internal protection circuit, preventing the overvoltage from directly acting on the motor, thereby protecting key components such as the windings of the motor from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0013] Figure 2 It is an exploded view of the partial cross-sectional structure of the housing of the present utility model.

[0014] Figure 3 It is an exploded view of the overvoltage protector body of the present utility model from another perspective.

[0015] In the figure: 1. Motor body; 11. Output end; 12. Power supply end; 13. Mounting block; 14. Positioning groove; 2. Housing; 21. Vertical plate; 22. Reinforcing plate; 23. Output groove; 24. Tooth groove; 25. Heat dissipation groove; 26. Positioning column; 27. Through groove; 3. Overvoltage protector body; 31. Bracket; 32. Connection end; 33. Fitting groove. Specific embodiments

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1: As Figures 1-3 shown, the present invention provides a high-voltage three-phase asynchronous motor with an overvoltage protector, including a housing 2. The inside of the housing 2 is provided with a motor body 1. The upper end of the motor body 1 is provided with an output end 11. One side of the outer surface of the motor body 1 is fixedly provided with a power supply end 12. One side of the outer surface of the housing 2 is provided with a through groove 27 for use in cooperation with the power supply end 12. And one side of the housing 2 is provided with an overvoltage protector body 3. One end of the overvoltage protector body 3 is provided with a connection end 32. And one end of the connection end 32 is provided with a fitting groove 33 for use in cooperation with the power supply end 12. The lower end of the overvoltage protector body 3 is provided with a bracket 31. The upper end of the bracket 31 is connected to the overvoltage protector body 3 by bolts in cooperation. And one end of the bracket 31 is fixedly connected to the housing 2. When the high-voltage three-phase asynchronous motor is connected to the power supply, the power supply end 12 of the motor body 1 is connected to the fitting groove 33 on the connection end 32 at one end of the overvoltage protector body 3 through the through groove 27 on the housing 2. The bracket 31 provides protection and support for the overvoltage protector body 3. In the normal working state, the overvoltage protector body 3 is in a monitoring state, and the voltage input to the motor body 1 is monitored in real time. Once an overvoltage situation occurs in the power grid, such as switching overvoltage or lightning overvoltage, etc., the overvoltage protector body 3 can quickly respond and limit or bypass the excessive voltage through the internal protection circuit, preventing the overvoltage from directly acting on the motor body 1, thereby protecting key components such as the windings of the motor body 1 from damage.

[0018] Embodiment 2: As Figures 1-3As shown in the figure, the inner surface of the housing 2 is provided with a tooth groove 24 for mating with the outer surface of the motor body 1. The outer surface of the housing 2 is provided with a plurality of through heat dissipation grooves 25. The lower side of the outer surface of the motor body 1 is fixedly provided with a plurality of annularly distributed positioning grooves 14, and the lower side of the inner surface of the housing 2 is fixedly provided with a plurality of positioning posts 26 for mating with the positioning grooves 14. The motor body 1 is installed inside the housing 2. The inner surface of the housing 2 is provided with a tooth groove 24, which mates with the outer surface of the motor body 1, playing a certain positioning and fixing role. At the same time, the plurality of positioning grooves 14 on the lower side of the outer surface of the motor body 1 cooperate with the positioning posts 26 inside the housing 2 to further ensure the accurate and stable installation position of the motor body 1 inside the housing 2. The heat dissipation grooves 25 are convenient for ensuring the ventilation and heat dissipation effect of the motor.

[0019] One side of the outer surface of the housing 2 is fixedly provided with a vertical plate 21. One end of the motor body 1 is fixedly provided with a mounting block 13, and the mounting block 13 and the vertical plate 21 are connected by bolts. The upper end of the vertical plate 21 is fixedly provided with a reinforcing plate 22, and the upper end of the reinforcing plate 22 is provided with a through output groove 23 for mating with the output end 11. The lower end of the reinforcing plate 22 and the motor body 1 are connected by four bolts. The mounting block 13 at one end of the motor body 1 is connected to the vertical plate 21 on one side of the outer surface of the housing 2 by bolts, providing a lateral fixed support for the motor body 1. The reinforcing plate 22 at the upper end of the vertical plate 21, on the one hand, provides a channel for the output end 11 of the motor body 1 through the output groove 23, and on the other hand, enhances the stability of the overall structure of the motor through the bolt connection with the motor body 1.

[0020] Working principle: When the high-voltage three-phase asynchronous motor is connected to the power supply, the power supply end 12 of the motor body 1 is connected to the mating groove 33 on the connection end 32 at one end of the voltage protector body 3 through the through groove 27 on the housing 2. The bracket 31 provides protection and support for the voltage protector body 3. In the normal working state, the voltage protector body 3 is in a monitoring state, and the voltage input to the motor body 1 is monitored in real time. Once an overvoltage situation occurs in the power grid, such as switching overvoltage or lightning overvoltage, etc., the voltage protector body 3 can respond quickly and limit or bypass the excessive voltage through the internal protection circuit, preventing the overvoltage from directly acting on the motor body 1, thereby protecting key components such as the windings of the motor body 1 from damage;

[0021] The motor body 1 is installed inside the housing 2. The inner surface of the housing 2 is provided with a tooth groove 24, which mates with the outer surface of the motor body 1, playing a certain positioning and fixing role. At the same time, the plurality of positioning grooves 14 on the lower side of the outer surface of the motor body 1 cooperate with the positioning posts 26 inside the housing 2 to further ensure the accurate and stable installation position of the motor body 1 inside the housing 2. The heat dissipation grooves 25 are convenient for ensuring the ventilation and heat dissipation effect of the motor;

[0022] The mounting block 13 at one end of the motor body 1 is connected to the vertical plate 21 on one side of the outer surface of the housing 2 by bolts, providing lateral fixed support for the motor body 1. The strengthening plate 22 at the upper end of the vertical plate 21, on the one hand, provides a channel for the output end 11 of the motor body 1 through the output groove 23, and on the other hand, enhances the stability of the overall structure of the motor through the bolt connection with the motor body 1.

[0023] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A high-voltage three-phase asynchronous motor with an overvoltage protector, comprising a housing (2), characterized in that: Inside the housing (2), there is a motor body (1). At the upper end of the motor body (1), there is an output end (11). On one side of the outer surface of the motor body (1), there is a power supply end (12) fixedly provided. And on one side of the housing (2), there is a voltage protector body (3). One end of the voltage protector body (3) has a connection end (32), and a fitting groove (33) for cooperating with the power supply end (12) is provided at one end of the connection end (32). At the lower end of the voltage protector body (3), there is a bracket (31), and one end of the bracket (31) is fixedly connected to the housing (2).

2. The high-voltage three-phase asynchronous motor with an overvoltage protector according to claim 1, characterized in that: On the inner surface of the housing (2), there are tooth grooves (24) for cooperating with the outer surface of the motor body (1). On the lower side of the outer surface of the motor body (1), there are a plurality of positioning grooves (14) distributed in a ring shape fixedly provided, and on the lower side of the inner surface of the housing (2), there are a plurality of positioning posts (26) for cooperating with the positioning grooves (14).

3. The high-voltage three-phase asynchronous motor with an overvoltage protector as described in claim 1, characterized in that: The upper end of the bracket (31) and the voltage protector body (3) are connected by bolts in cooperation.

4. A high-voltage three-phase asynchronous motor with an overvoltage protector according to claim 1, characterized in that: On the outer surface of the housing (2), there are a plurality of through heat dissipation grooves (25) provided.

5. A high-voltage three-phase asynchronous motor with an overvoltage protector according to claim 1, characterized in that: On one side of the outer surface of the housing (2), there is a vertical plate (21) fixedly provided. One end of the motor body (1) has a mounting block (13), and the mounting block (13) and the vertical plate (21) are connected by bolts in cooperation.

6. The high-voltage three-phase asynchronous motor with an overvoltage protector as described in claim 5, characterized in that: At the upper end of the vertical plate (21), there is a reinforcing plate (22) fixedly provided, and a through output groove (23) for cooperating with the output end (11) is provided at the upper end of the reinforcing plate (22).

7. The high-voltage three-phase asynchronous motor with an overvoltage protector according to claim 6, characterized in that: Between the lower end of the reinforcing plate (22) and the motor body (1), they are connected by four bolts in cooperation.

8. A high-voltage three-phase asynchronous motor with a lightning arrester according to claim 1, characterized in that: On one side of the outer surface of the housing (2), there is a through groove (27) for cooperating with the power supply end (12).

Images