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Evaporation cooling combined cycle device of hydraulic generator stator

A hydro-generator, combined cycle technology, applied in cooling/ventilation devices, electromechanical devices, steam/steam condensers, etc., can solve problems such as increased risk of unreliability, and achieve simple structure, consistent operating conditions, and uniform heat. Effect

Active Publication Date: 2010-09-29
DONGFANG ELECTRIC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The internal water cooling technology of the stator of the hydro-generator has a history of more than 40 years in the world, which has solved the above problems. However, this technology increases the pump circulating pure water supply and deionization system, and the possibility of accidents caused by leakage and oxide blockage, etc. The risk of unreliability is also intensified at the same time

Method used

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  • Evaporation cooling combined cycle device of hydraulic generator stator
  • Evaporation cooling combined cycle device of hydraulic generator stator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 As shown, the evaporative cooling combined cycle device for the stator of the hydro-generator is arranged on the stator of the hydro-generator. Multiple condensers 11 are arranged around the circumference according to the structural requirements. Two pipelines are arranged at the bottom of each condenser 11. Inside the condenser 11 The evaporating medium passes through one of the pipelines, that is, the first liquid return pipe 3, enters the first general liquid collection pipe 4, and then enters the stator winding heating element 1, the first general steam collection pipe 5, and the first steam collection pipe 6 , and finally return to the condenser 11; the evaporation medium in the condenser 11 passes through another pipeline, that is, the second liquid return pipe 7, enters the second total liquid collection pipe 8, and then enters the stator collector ring heating element 2, The second total steam collecting pipe 9, the second steam collecting pipe ...

Embodiment 2

[0017] The evaporative cooling circulation device for the stator of the hydro-generator is set on the stator of the hydro-generator, which can separately evaporatively cool the heating element 2 of the stator confluence ring. The circumference of the stator is provided with a plurality of condensers 11 according to the structural requirements, and each condenser 11 The bottom is provided with a second liquid return pipe 7, and the top of each condenser 11 is provided with a second steam collection pipe 9, and the evaporation medium enters the second liquid return pipe 7 and the second total steam collection pipe sequentially from the condenser 11. 8. The heating element 2 of the stator confluence ring, the second general steam collecting pipe 9, the second steam collecting pipe 10, and finally return to the condenser 11, forming the evaporative cooling self-circulation system of the confluence ring.

Embodiment 3

[0019] Since the heating element 1 of the stator winding is a vertical structure, and the heating element 2 of the stator confluence ring is placed horizontally, self-circulation operation can be realized under the condition of ensuring a certain liquid level of the evaporating medium. At the same time, the bottom of the second liquid return pipe 7 is higher than the bottom of the first liquid return pipe 3, and the top of the second liquid return pipe 7 is lower than the top of the first liquid return pipe (3), and the first liquid return pipe 3 is used for evaporative cooling of the stator winding The circulation system uses the second liquid return pipe 7 for the stator confluence ring evaporative cooling circulation system. Since the liquid return pipe of the stator confluence ring evaporative cooling circulation system is low, the evaporation medium in the condenser is always preferentially supplied to the stator confluence ring heating element 2 , After the collector ring...

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Abstract

The invention relates to a stator evaporate cooling coupled circulator of water-wheel generator, which comprises stator winding heater immerged with evaporate medium, the condenser system for exchanging heat with coolant, and stator collector ring heater immerged via evaporate medium, wherein one end of stator winding heater via first collecting tube, first reflux tube is connected to the bottom of condenser, while another end is through to the first main gas collecting tube, which via the first gas collecting tube is through to the upper part of condenser; one end of stator collector ring heater via second collecting tube, second reflux tube is through to the bottom of condenser, while another end is through to the second main gas collecting tube, which via the second gas collecting tubeis through to the upper part of condenser. The invention has simple structure and makes the axial and circumference temperature distributed uniformly on stator winding and collector ring.

Description

technical field [0001] The invention relates to a cooling device for a stator of a hydraulic generator, in particular to a combined cycle device for evaporative cooling of a stator of a hydraulic generator. Background technique [0002] With the continuous increase of the single unit capacity of the hydro-generator, the heat load of the motor has also increased significantly, and the temperature rise and temperature difference of the windings and collector rings caused by this are all intensified. Therefore, reducing the temperature rise of motor windings and slip rings and improving the uniformity of temperature distribution are crucial to the reliable operation of large generators. [0003] The internal water cooling technology of the stator of the hydro-generator has a history of more than 40 years in the world, which has solved the above problems. However, this technology increases the pump circulating pure water supply and deionization system, and the possibility of acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/19F28B7/00
Inventor 贺建华郑小康侯小全铎林
Owner DONGFANG ELECTRIC CORP LTD