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Device for improving uniformity of axial temperature distribution of stator

A technology of temperature distribution and uniformity, applied in the direction of electromechanical device, casing/cover/support, magnetic circuit shape/style/structure, etc., can solve the uneven axial wind speed of the stator wind channel and cannot effectively reduce the stator coil and the axial temperature difference of the iron core, etc., to achieve the effect of easy implementation, simple structure and convenient adjustment

Active Publication Date: 2019-11-26
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the motor with ventilation slots in the stator disclosed in this patent document, the axial wind speed in the stator air groove is not uniform, and the axial temperature difference between the stator coil and the iron core cannot be effectively reduced.

Method used

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  • Device for improving uniformity of axial temperature distribution of stator
  • Device for improving uniformity of axial temperature distribution of stator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 and figure 2 , a device for improving the uniformity of stator axial temperature distribution, comprising a rotor core 1 and a rotor frame 2, the rotor core 1 is installed on the rotor frame 2, and a plurality of rotor magnets 3 are fixed on the rotor core 1, A plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, and also include a stator core 4, a stator pressure plate 1, a stator pressure plate 2 6, a core-through screw 7 and an axial ring plate 8, and the stator core 4 includes multiple A core segment 9, a stator wind trench 10 is arranged between any two adjacent core segments 9, and the plurality of core segments 9 are connected by a core screw 7, and one end of the core screw 7 is fixedly connected with the stator pressure plate-5, The other end is fixedly connected to the stator pressure plate 2 6, an axial ring plate 8 is fixedly connected between the stator pressure plate 1 5 and the stator pressure pla...

Embodiment 2

[0033] see figure 1 and figure 2, a device for improving the uniformity of stator axial temperature distribution, comprising a rotor core 1 and a rotor frame 2, the rotor core 1 is installed on the rotor frame 2, and a plurality of rotor magnets 3 are fixed on the rotor core 1, A plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, and also include a stator core 4, a stator pressure plate 1, a stator pressure plate 2 6, a core-through screw 7 and an axial ring plate 8, and the stator core 4 includes multiple A core segment 9, a stator wind trench 10 is arranged between any two adjacent core segments 9, and the plurality of core segments 9 are connected by a core screw 7, and one end of the core screw 7 is fixedly connected with the stator pressure plate-5, The other end is fixedly connected to the stator pressure plate 2 6, an axial ring plate 8 is fixedly connected between the stator pressure plate 1 5 and the stator pressure plat...

Embodiment 3

[0041] see figure 1 and figure 2 , a device for improving the uniformity of stator axial temperature distribution, comprising a rotor core 1 and a rotor frame 2, the rotor core 1 is installed on the rotor frame 2, and a plurality of rotor magnets 3 are fixed on the rotor core 1, A plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, and also include a stator core 4, a stator pressure plate 1, a stator pressure plate 2 6, a core-through screw 7 and an axial ring plate 8, and the stator core 4 includes multiple A core segment 9, a stator wind trench 10 is arranged between any two adjacent core segments 9, and the plurality of core segments 9 are connected by a core screw 7, and one end of the core screw 7 is fixedly connected with the stator pressure plate-5, The other end is fixedly connected to the stator pressure plate 2 6, an axial ring plate 8 is fixedly connected between the stator pressure plate 1 5 and the stator pressure pla...

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Abstract

The invention discloses a device for improving uniformity of axial temperature distribution of a stator, and belongs to the technical field of electric generators. The device comprises a rotor core and a rotor engine base; the device is characterized by further comprising a stator core, a stator pressing plate I, a stator pressing plate II, a core penetrating screw and an axial annular plate; thestator core comprises a plurality of core sections, and a stator air duct is arranged between any two adjacent core sections; the plurality of core sections are connected with each other through the core penetrating screw; the axial annular plate is fixed between the stator pressing plate I and the stator pressing plate II; circumferential annular plates are fixed on the core sections; a stator-rotor gap is arranged between the stator core and the rotor core; and the stator pressing plate I, the stator pressing plate II, the axial annular plate and the stator core enclose the stator core backspace. According to the device for improving the uniformity of the axial temperature distribution of the stator provided by the invention, the static pressure difference can be kept constant, and theaxial wind speed of the stator air duct is relatively uniform, so that favorable conditions are provided for the axial uniform distribution of a stator coil and the iron core temperature, the axial temperature difference between the stator coil and the core is reduced, the structure is simple, and the adjustment is easy.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a device for improving the uniformity of axial temperature distribution of a stator. Background technique [0002] For large rotating electrical machines, it is a very common cooling method to arrange a certain number of ventilation grooves on the stator to cool the stator coil and iron core. Cooperate with other structures to form different flow patterns. Among them, the air flow diverges from the air gap to the stator air groove, which is the same as the flow in most cases in the motor, which is called positive flow; the air flow converges from the stator air groove to the air gap, which is opposite to the flow in most cases in the motor, which is called reverse flow . [0003] For the actual structure of the motor, the space at the back of the air duct is generally large, and it can be considered that the pressure remains unchanged. As for the air gap, the flow space is u...

Claims

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Application Information

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IPC IPC(8): H02K1/20H02K1/16H02K5/20
CPCH02K1/16H02K1/20H02K5/20H02K2213/03
Inventor 王超周光厚廖毅刚
Owner DONGFANG ELECTRIC MACHINERY
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