CN206517266U - A kind of high Large Copacity high-speed and high-efficiency threephase asynchronous in low center - Google Patents

Abstract

The utility model relates to a low-center, high-capacity, high-speed, high-efficiency three-phase asynchronous motor, which includes a motor casing, and a stator core with windings is fixedly connected inside the motor casing, and the rotating shaft of the motor passes through the stator core and is located in the stator core. The rotating shaft of the motor is covered with a copper bar rotor. The stator core is connected to the motor casing by a heat-shrinkable sleeve structure, and the winding is a low-harmonic winding. The rotating shafts at both ends of the bar rotor are equipped with internal fans, and both ends of the inner side of the motor casing are equipped with fixed plates, which are located on both sides of the stator core, and the fixed plates are fixedly connected with windshields, and the windshields A distance is provided between the lower end and the inner fan, a positive pressure air sealing cover is provided between the fixed plate and the motor casing, and the positive pressure air sealing cover is fixedly connected with the fixed plate. The center of the three-phase asynchronous motor is high and low, occupies a small space, has a large capacity and high efficiency, and can meet the needs of production.

Description

A low-center, high-capacity, high-speed, high-efficiency three-phase asynchronous motor

technical field

The utility model relates to the technical field of three-phase asynchronous motors, in particular to a low-center, high-capacity, high-speed, high-efficiency three-phase asynchronous motor.

Background technique

With the continuous increase of the single capacity of large-scale equipment, the motors driving the equipment are also becoming larger and larger, causing the power consumption of the motor to account for an increasing proportion of the total power consumption in production, and it takes up a lot of space, while the existing large-scale The high-voltage box-type three-phase asynchronous motor has relatively high frame center height, small capacity, and low efficiency, which cannot meet the needs of production.

Contents of the invention

Aiming at the defects in the prior art, the utility model provides a low center height, large capacity, high speed and high efficiency three-phase asynchronous motor, which reduces the center height of the three-phase asynchronous motor, increases capacity and improves efficiency.

The technical scheme adopted by the utility model for solving the above-mentioned problems is to provide a low-center, high-capacity, high-speed, high-efficiency three-phase asynchronous motor, including a motor casing, a main junction box and an auxiliary junction box are fixedly connected to the motor casing, and the motor casing Both ends are provided with end covers, the outer upper end of the motor casing is fixedly connected with a water cooler, the water cooler is provided with a water inlet pipe and a water outlet pipe, the motor casing is fixedly connected with a stator core with windings, and the rotating shaft of the motor Through the stator core, a copper bar rotor is sheathed on the rotating shaft located in the stator core. The stator core and the motor casing are connected by a heat-shrinkable sleeve structure. The winding is a low-harmonic winding. It is connected with the motor casing through sliding bearings. The rotating shafts at both ends of the copper bar rotor are equipped with internal fans. Both ends of the inner side of the motor casing are equipped with fixing plates. The fixing plates are located on both sides of the stator core and fixed on the fixing plates. A windshield is connected, and a distance is provided between the lower end of the windshield and the inner fan, and a positive pressure air sealing cover is provided between the fixed plate and the motor casing, and the positive pressure air sealing cover is fixedly connected with the fixed plate.

The lower end of the windshield is in the shape of a curved arc wrapping the winding.

The stator core is made of cold-rolled silicon steel.

The end cover is fixedly connected with the motor casing by screws.

The water cooler is provided with a water leakage monitor.

The beneficial effects of the utility model are: the center height of the three-phase asynchronous motor is small, the occupied space is small, the capacity is large, and the efficiency is high, which can meet the needs of production.

Description of drawings

Fig. 1 is the front view of the utility model;

FIG. 2 is a side view of FIG. 1 .

detailed description

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the following will further describe the implementation of the utility model in detail in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the utility model provides a low-center, high-capacity, high-speed, high-efficiency three-phase asynchronous motor, including a motor casing 1, and a main junction box 2 and an auxiliary junction box 3 are fixedly connected to the motor casing 1. Both ends of the casing 1 are provided with end caps 4, and the end caps 4 are fixedly connected with the motor casing 1 by screws. The outer upper end of the motor casing 1 is fixedly connected with a water cooler 5, and the water cooler 5 is provided with a water inlet pipe 6 and an outlet pipe. The water pipe 7 and the water cooler 5 are provided with a water leakage monitoring instrument 17, and when the water leakage situation occurs in the water cooler 5, the water leakage monitoring instrument 17 can send an alarm in time. A stator core 9 with a winding 8 is fixedly connected to the motor casing 1, and the winding 8 is a low-harmonic winding, which improves the magnetic potential waveform of the motor and reduces miscellaneous and copper losses. The rotating shaft 10 of the motor passes through the stator core 9, and the rotating shaft 10 located in the stator core 9 is covered with a copper bar rotor 11, and the stator core 9 is connected with the motor casing 1 by a heat-shrinkable sleeve structure, thereby reducing The center of the frame of the three-phase asynchronous motor is high, which reduces the floor space. The stator core 9 is made of cold-rolled silicon steel material, which reduces iron consumption, reduces power loss, and increases the capacity of the motor. The two ends of the rotating shaft 10 of the motor are connected with the motor casing 1 through sliding bearings 12, and the rotating shaft 10 at both ends of the copper bar rotor 11 is equipped with an inner fan 13, which is set to operate in a high-efficiency area to increase the ventilation area. Reduce the wind resistance, reduce the loss of the inner fan 13, improve the efficiency of the motor, and ensure that it reaches the national secondary energy efficiency standard. Both ends of the inner side of the motor housing 1 are provided with a fixed plate 14, the fixed plate 14 is located on both sides of the stator core 9, the fixed plate 14 is fixedly connected with a windshield 15, and the lower end of the windshield 15 is curved to wrap the winding 8 Arc-shaped, and the lower end of the windshield 15 and the inner fan 13 are provided with a distance, and a positive pressure air sealing cover 16 is provided between the fixed plate 14 and the motor casing 1, and the positive pressure air sealing cover 16 is fixedly connected with the fixed plate 14.

The stator core 9 of the three-phase asynchronous motor is connected with the motor casing 1 by a heat-shrinkable sleeve structure, thereby reducing the center height of the three-phase asynchronous motor base and reducing the occupied space. The winding 8 is a low-harmonic winding, which improves the magnetic properties of the motor. Potential waveform, reduce miscellaneous consumption and copper consumption, make the capacity of the motor reach 30,000KW, high efficiency, and meet the national second-level energy efficiency standard.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and equivalents.

Claims (5)

1. fixed on a kind of high Large Copacity high-speed and high-efficiency threephase asynchronous in low center, including motor housing, motor housing connect Main junction box and assistant junction box are connected to, the two ends of motor housing are equipped with end cap, and the outer upper end of motor housing is fixedly connected There is water cooler, water cooler is provided with water inlet pipe and outlet pipe, motor housing and is fixedly connected with the stator iron with winding Core, the rotary shaft of motor passes through stator core, is arranged with copper bar rotor in the rotary shaft in stator core, its feature exists In：The stator core is connected with motor housing using pyrocondensation nested structure, and winding is low harmonic winding, the rotating shaft terminal of motor It is connected with motor housing by sliding bearing, internal fan is equipped with the rotary shaft at copper bar rotor two ends, motor housing Inner side two ends are equipped with fixed plate, and fixed plate, which is located in the both sides of stator core, fixed plate, is fixedly connected with deep bead, and keeps out the wind Spacing is provided between the lower end of plate and internal fan, malleation air sealing cover is provided between fixed plate and motor housing, and malleation is airtight Capping is fixedly connected with fixed plate.

2. a kind of low high Large Copacity high-speed and high-efficiency threephase asynchronous in center according to claim 1, it is characterised in that： The lower end of the deep bead is in the bending arcuation for wrapping up winding.

3. a kind of low high Large Copacity high-speed and high-efficiency threephase asynchronous in center according to claim 2, it is characterised in that： The stator core is made up of cold rolled silicon steel material.

4. a kind of low high Large Copacity high-speed and high-efficiency threephase asynchronous in center according to claim 3, it is characterised in that： The end cap is fixedly connected with motor housing by screw.

5. a kind of low high Large Copacity high-speed and high-efficiency threephase asynchronous in center according to claim 4, it is characterised in that： The water cooler is provided with water-leakage monitoring meter.