Non-salient pole generator having encircling water-cooled type stator end portion iron core cooling system
A technology for stator ends, cooling systems, applied in cooling/ventilation devices, electrical components, electromechanical devices, etc.
Active Publication Date: 2015-09-09
HARBIN UNIV OF SCI & TECH
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Problems solved by technology
[0004]The purpose of the present invention is to provide a secluded pole generator with a surrounding water-cooled stator end core cooling system to solve the problem of high loss and ventilation cooling effect of the stator end core The temperature of the stator end core caused by the temperature difference is too high and the temperature difference with other stator core segments is large, which effectively improves the cooling effect of the stator end core in the hidden pole generator
Method used
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specific Embodiment approach 1
[0020] Specific implementation mode two: combination image 3 This embodiment is described. The difference between this embodiment and Embodiment 1 is that it is provided with a stator axial ventilation hole 13 at the middle position of the teeth and the position of the yoke of the first stage stator end core 1-1, and the stator shaft The ventilation hole 13 runs through the entire first section of the stator end core 1-1, so that the cooling fluid in the end area of the hidden pole generator directly enters the radial ventilation groove 5 of the stator, which speeds up the cooling in the radial ventilation groove 5 of the stator The speed of the fluid effectively reduces the temperature of the iron core 1-1 at the end of the first section of the stator that is seriously heated. Other components and connections are the same as those in Embodiment 1.
[0021] Specific implementation mode three: combination Figure 4 Describe this embodiment. The difference between this embo...
specific Embodiment approach 2
specific Embodiment approach 3
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The invention, which relates to the motor filed, discloses a non-salient pole generator having an encircling water-cooled type stator end portion iron core cooling system. With the generator, a problem that the stator end portion iron core temperature of the existing non-salient pole generator is too high can be solved. A pressure finger is pressed at an outer side surface of a first-segment stator end portion iron core and is in contact with an encircling water pipe; and the encircling water pipe is installed inside the inner and outer side surfaces of the stator end portion iron core. A water pipe valve is located at an inlet of a water-circulation cooling device; the water pipe valve is connected with the upper end of the encircling water pipe; and the turning parts of the encircling water pipe are respectively located at the bottom tooth part and the yoke top part of the stator end portion iron core. An outlet of the water-circulation cooling device is connected with the lower end of the encircling water pipe. Water flowing out of the outlet of the water-circulation cooling device is cooled and then circulates to the inlet of the water-circulation cooling device, thereby forming an encircling water-cooled type cooling system for the stator end portion iron core. According to the invention, the cooling effect of the stator end portion iron core is enhanced; the structure is simple; and the generator can be realized conveniently.
Description
technical field [0001] The invention relates to a secluded pole generator with a water-cooled stator end iron core cooling system, which belongs to the field of motors. Background technique [0002] The increase of the unit capacity of a large secluded pole generator will lead to a significant increase in the magnetic density at the end of the generator, and a sharp increase in the loss and temperature rise of the iron core at the end of the stator. The iron core at the end of the stator is warped and deformed due to extrusion due to the restraint of the internal fixings, resulting in the loosening of the iron core at the end of the stator, especially in the special working conditions of the secluded pole generator, such as the stator with high temperature during phase advance operation. The iron core at the end may even break and squeeze the stator windings. In severe cases, the iron core at the end of the stator may be burned, affecting the service life and safe operation ...
Claims
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IPC IPC(8): H02K9/197
Inventor 韩继超戈宝军姜金刚李伟力
Owner HARBIN UNIV OF SCI & TECH