A reciprocating hydrogen internal cooling end ventilation cooling device for a turbogenerator

A turbogenerator, ventilation and cooling technology, applied in the direction of cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problems of copper shielding and pressure ring height, achieve the effect of increasing flow, speeding up fluid speed, and saving materials

Active Publication Date: 2018-02-02
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 reciprocating hydrogen internal cooling end ventilation cooling device of a turbogenerator to solve the problem of excessively high temperature of the copper shield and pressure ring caused by unreasonable ventilation design in the end area of ​​the turbogenerator , improve the utilization rate of the cooling fluid in the end area of ​​the turbogenerator, effectively reduce the temperature of each component in the end area of ​​the generator, reduce the temperature difference between the components at the end, and improve the safety of the turbogenerator Ability to operate stably

Method used

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  • A reciprocating hydrogen internal cooling end ventilation cooling device for a turbogenerator
  • A reciprocating hydrogen internal cooling end ventilation cooling device for a turbogenerator
  • A reciprocating hydrogen internal cooling end ventilation cooling device for a turbogenerator

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specific Embodiment approach 1

[0026] Specific implementation mode one: combine figure 1 , figure 2 and image 3 Describe this embodiment, the steam turbine generator reciprocating type hydrogen internal cooling end ventilation cooling device according to the present invention includes a pressure finger 5, a pressure ring 4 pressed on the pressure finger 5, and a copper ring fixed on the pressure ring 4. Shield 14, the bow-shaped wind deflector 6 fixed on the outer diameter of the copper shield 14, and the wind guide groove 12 is arranged between the pressure ring 4 and the bow-shaped wind deflector 6, and the copper shield 14 includes an inner core copper shield 1 and an outer copper shield 1. Shielding 2, the inner core copper shielding 1 is arranged in the cavity of the outer copper shielding 2, and its outer diameter end is fixedly connected with the bow-shaped wind deflector 6, the air duct between the inner core copper shielding 1 and the inner wall of the outer copper shielding 2 is Reciprocating ...

specific Embodiment approach 2

[0031] Specific implementation mode two: combination figure 2 , image 3 , Figure 4 This embodiment is described. The difference between this embodiment and Embodiment 1 is that it also includes a vacuum chamber 7, the vacuum chamber 7 is set inside the pressure ring 4 adjacent to the inner diameter of the pressure ring, and the inner wall of the vacuum chamber 7 is set There is a heat-reflecting layer 8 . There is no anti-heat layer 8 on the inner wall of the vacuum chamber 7 close to the inner diameter of the pressure ring. The vacuum cavity 7 in the press ring 4 can greatly hinder the heat flow in the inner diameter area of ​​the press ring 4 to the inside of the press ring 4 and the press finger 5 . The aluminum foil layer on the wall of the vacuum chamber 7 constitutes the heat-reflecting layer 8, which can effectively reflect heat radiation and reduce the heat radiated from the inner diameter area of ​​the pressure ring 4 to the inside of the pressure ring 4 and the...

specific Embodiment approach 3

[0033] Specific implementation mode three: combination figure 2 , image 3 , Figure 5 This embodiment is described. The difference between this embodiment and the second embodiment is that the section of the vacuum chamber 7 along the radial direction is "L"-shaped, and the anti-heat layer 8 is closely attached to the wall of the "L"-shaped vacuum chamber 7 . The vacuum chamber 7 with an "L"-shaped cross section has a larger contact area with the pressure ring 4, which can further hinder the flow of heat in the inner diameter area of ​​the pressure ring 4 to the inside of the pressure ring 4 and the pressure finger 5. Other specific implementation manners are the same as the second implementation manner, and details are not repeated here.

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Abstract

The invention discloses a reciprocating hydrogen inner-cooling end ventilating and cooling device of a steam-turbine generator. An inner-core copper shield and an outer copper shield are arranged, the inner-core copper shield is arranged in a cavity of the outer copper shield, reciprocating air channels are formed between the inner-core copper shield and the outer copper shield, a vacuum cavity and multiple radial air channels are arranged in a pressing ring, and a heat reflection layer is arranged on the inner wall of the vacuum cavity. Therefore, highest temperatures of the copper shields and the pressing ring are reduced effectively, the cooling effect of components in a steam-turbine generator end area is improved, the stable operation capacity of the generator is improved, the cost is reduced, and the device is simple in structure and easy to implement.

Description

Technical field: [0001] The invention relates to a reciprocating hydrogen internal cooling end ventilation cooling device of a turbogenerator, which belongs to the field of motors. Background technique: [0002] In the field of electrical engineering, the magnetic field leakage at the end of the generator is a common potential safety hazard. The magnetic flux leakage will induce eddy currents in the metal structural parts at the end of the generator, causing heating of the end components. In particular, the concentrated magnetic flux leakage at the end can easily lead to local overheating of structural parts, and may even endanger the safe operation of the generator in severe cases. [0003] The copper shielding of the end member of the turbogenerator can effectively resist the leakage magnetic field in the end area of ​​the generator, thereby reducing the magnetic density of the pressure ring, pressure finger and end core of the end member. The leakage magnetic field in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/04
CPCH02K9/04
Inventor 韩继超
Owner HARBIN UNIV OF SCI & TECH
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