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High starting torque induction motor for oil field

A technology of induction motor and starting torque, applied in the direction of electrical components, electromechanical devices, magnetic circuit shape/style/structure, etc., to achieve the effects of simple structure, reduced manufacturing cost, and reliable operation

Inactive Publication Date: 2016-11-23
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of using high-power induction motors to meet the requirements of high starting torque in oil field production, and there is a problem of large horse-drawn trolleys, and provides a high starting torque induction motor for oil fields

Method used

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  • High starting torque induction motor for oil field
  • High starting torque induction motor for oil field
  • High starting torque induction motor for oil field

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Embodiment Construction

[0016] Combine below figure 1 For illustration, the high starting torque induction motor used in the oilfield described in this embodiment, the structure composition of the high starting torque high efficiency induction motor is consistent with the normal cage induction motor as follows: figure 1 , is mainly divided into two parts, namely stator 1 and rotor 2. The stator mainly includes stator core 3 and stator winding 4 embedded in the stator core. The rotor part mainly includes rotor core 5 connected by a rotating shaft and end rings, Cage bars 6 and fans 7 for ventilation and cooling. In addition, there are front and rear end covers 8, a casing 9 and a frame 10 outside the stator to support and protect the motor structure.

[0017] This implementation mode is a transformation of the existing Y2 series induction motors, so as to realize the function of high starting torque and adapt to the oil field working environment under the condition that the machine frame size remains...

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Abstract

An induction motor with high starting torque for oil field belongs to the field of induction motors of Y series. The invention solves the problem of using a high-power induction motor to meet the requirement of high starting torque in oil field production, and there is a problem of large horse-drawn carts. The solution of the present invention: the three-phase winding of the motor stator is divided into two parts I and II, and the specific allocation principle is: if the number of slots in each pole and phase is an even number, the slots of the three-phase winding are equally divided into two parts I and II; The number of slots in each phase is an odd number, the number of slots of the three-phase winding is divided into two parts, I and II, and the number of slots in the second part is one more than that in the part I; in both cases, ensure that the slots in the part II The windings are connected end to end; the principle of determining the wire diameter of the three-phase winding of the motor stator: increase the winding wire diameter A c , the stator electrical density is not greater than 6A / mm 2 In degrees; the principle of determining the length of the iron core of the motor: keep the size of the casing unchanged, and select the maximum value within the allowable range of the size of the casing.

Description

technical field [0001] The invention belongs to the field of Y series induction motors. Background technique [0002] Compared with permanent magnet motors, induction motors have the characteristics of excellent running performance, durability, high reliability, wide speed range, simple control devices, and low manufacturing costs, and can be widely used in various industrial production links. Due to the special working environment of the oil field determines the special load conditions, that is, the motor is required to have a high starting torque and can run at a low load during normal operation and has the characteristics of energy saving. Induction motors used in current oil field production such as pumping units In other occasions, most of the methods used are to use high-power motors to meet the requirements of high starting torque, but in normal operation, it is inevitable that high-power motors drive lower loads, that is, the so-called "big horse-drawn car" ”, thus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K3/12H02K3/28
CPCH02K1/16H02K3/12H02K3/28H02K2213/03
Inventor 谢颖蔡翔单雪婷
Owner HARBIN UNIV OF SCI & TECH
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