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Turbo-generator with helical bi-directional water-cooled end cooling system

A technology for turbogenerators and cooling systems, applied in cooling/ventilation devices, electrical components, electromechanical devices, etc., can solve problems such as unreasonable ventilation design, copper shielding of end components, and high pressure ring temperature, so as to save materials, Enhanced cooling effect and improved heat resistance

Active Publication Date: 2018-03-30
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a turbo generator with a helical two-way water-cooled end cooling system to solve the problem of excessively high temperature of the copper shield and pressure ring of the end components caused by the unreasonable ventilation design of the end area of ​​the turbo generator problem, effectively reducing the temperature of the copper shield and pressure ring of the end member, and improving the long-term stable operation of the turbogenerator

Method used

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  • Turbo-generator with helical bi-directional water-cooled end cooling system
  • Turbo-generator with helical bi-directional water-cooled end cooling system
  • Turbo-generator with helical bi-directional water-cooled end cooling system

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8Describe this embodiment, the turbogenerator with the helical two-way water-cooled end cooling system described in this embodiment, it includes a copper shield 1, a pressure ring 2, a pressure finger 3, a stator end core 4, and an air deflector 5 , Upper side circulating water cooler 6, lower side circulating water cooler 7, ventilation ditch 8, wind guide ditch 9, inner surrounding waterway 10, outer surrounding waterway 11 and outer coating type annular waterway 12. The copper shield 1 is composed of a copper shield lower section 1-1, a copper shield middle section 1-2 and a copper shield upper section 1-3. The pressing finger 3 is composed of a long pressing finger 3-1 and a short pressing finger 3-2. The inner surrounding waterway 10 is composed of an inlet guide pipe 10-1 of the inner surrounding waterway, a main body of the...

specific Embodiment approach 2

[0030] Specific implementation mode two: combination Figure 9 This embodiment will be described. The difference between this embodiment and Embodiment 1 is that the width of the ventilation groove 8 between the copper shield 1 and the pressure ring 2 is increased. The flow rate of the cooling fluid entering the ventilation groove 8 between the copper shield 1 and the pressure ring 2 is increased, the speed of the cooling fluid in the ventilation groove 8 is accelerated, the ability of the cooling fluid to take away heat from the pressure ring 2 is improved, and the pressure is further reduced. The temperature of circle 2. Other components and connections are the same as those in Embodiment 1.

specific Embodiment approach 3

[0031] Specific implementation mode three: combination Figure 10 The present embodiment is described. The difference between this embodiment and Embodiment 1 is that the inner surrounding waterway main body 10-2 and the outer surrounding waterway main body 11-2 are alternately arranged. The ability of the cooling water to take away heat from the copper shield 1 and the pressure ring 2 is improved, and the temperature of the copper shield 1 and the pressure ring 2 is further reduced. Other components and connections are the same as those in Embodiment 1.

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Abstract

The invention discloses a turbo-generator with a spiral bidirectional water-cooled end portion cooling system, and relates to the motor field. The turbo-generator with spiral bidirectional water-cooled end portion cooling system aims at solving the problem that the temperature of the end portion area of a current turbo-generator is too high. The turbo-generator with a spiral bidirectional water-cooled end portion cooling system is characterized in that: copper shield is arranged at the outside of a clamping ring; a ventilation trench is arranged between the copper shield and the clamping ring; a wind-guiding plate is arranged at the external diameter of the copper shield; an upper side water recirculator and a lower side water recirculator are respectively arranged on the upper side and the lower side of the wind-guiding plate; the main body of an inner encircling water channel and the main body of an outer encircling water channel move ahead in the axial direction in a spiral type; both the main body of the inner encircling water channel and the main body of the outer encircling water channel are arranged at the lower side segment of the copper shield, the middle segment of the copper shield and the inner circle area of the clamping ring; the external applying annular water channels closely attach to the inner surface of the copper shield; and the flowing directions of the cooling water in the inner encircling water channel and the outer encircling water channel are opposite. The turbo-generator with a spiral bidirectional water-cooled end portion cooling system effectively increase the cooling effect of the end portion area of the turbo-generator, and is simple in structure and is convenient to implement.

Description

technical field [0001] The invention relates to a steam turbine generator with a helical bidirectional water-cooled end cooling system, which belongs to the field of motors. Background technique [0002] The single unit capacity and electromagnetic load of large turbogenerators are relatively large, and the structure and leakage magnetic field distribution in the end area of ​​the generator are relatively complex, resulting in the magnetic density of the copper shield, pressure finger, pressure ring and stator end core of the generator end components. higher. The copper shield installed outside the pressure ring of the end member of the generator can effectively resist the magnetic flux leakage in the end area, thereby reducing the magnetic density of other end members behind the copper shield. Due to the large eddy current loss, thin thickness, and small volume of the copper shield, the heat density of the copper shield is very high, which in turn causes the copper shield ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/20H02K9/19H02K11/01
CPCH02K5/20H02K9/19
Inventor 韩继超郑萍孙玉田戈宝军王磊陶大军白金刚隋义
Owner HARBIN UNIV OF SCI & TECH