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Heating systems for rotor in-situ in turbomachines

A technology for heating systems and turbines, applied in the field of heating systems, can solve problems such as flow path weakening

Inactive Publication Date: 2017-06-09
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat blanket arrangement also detrimentally weakens the flow path of the heat that should be conducted to and through the rotor 24 through the working fluid 18

Method used

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  • Heating systems for rotor in-situ in turbomachines
  • Heating systems for rotor in-situ in turbomachines
  • Heating systems for rotor in-situ in turbomachines

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Embodiment Construction

[0048] As noted above, the present invention provides an in-situ heating system for a rotor in a turbomachine. Embodiments of the present invention heat the rotor directly, compared to conventional systems that only conduct heat from the outer casing. The heating system can take various embodiments. In one embodiment, the heating system includes a heating element to heat in situ a portion of the outer surface of the rotor in the turbomachine. In another embodiment, the heating system may include a heating element positioned at least partially within the rotor to heat the rotor in situ in the turbine. Each embodiment may include a controller to control operation of the heating element. The heating systems described in this invention can provide advantages such as but not limited to: closed loop temperature control to supplement and / or counteract internal heat flow from thermal blankets to maintain desired component temperatures , control the temperature ramp rates (ramp rate...

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PUM

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Abstract

Heating systems for a rotor in-situ in a turbomachine are provided. In contrast to conventional systems that merely heat from an external turbine casing, embodiments of the disclosure heat the rotor. In one embodiment, a heating system includes a heating element to heat a portion of an exterior surface of the rotor. In another embodiment, the heating system may include a heating element(s) at least partially positioned within the rotor, and the rotor including the heating system. Each embodiment may include a controller to control operation of the heating element(s).

Description

[0001] Cross References to Related Applications [0002] This application is related to concurrently filed and currently pending US Application Nos. 14 / 877991 and 14 / 877996, Docket Nos. 282941A and 282941B, respectively. technical field [0003] The present invention relates generally to heating systems, and more particularly to heating systems for in-situ use in rotors in turbomachines and associated rotors. Background technique [0004] In order to start some turbomachines, such as steam turbines, it is often necessary to ensure that the parts of the turbomachine are at the proper temperature. It is desirable to initiate temperature control whether the turbine is started from a cold start, a warm start, or a hot start after a temporary cessation of power production. Start-up temperature control is necessary, for example, to ensure and optimize proper tolerances and clearances between parts, to prevent slow starts due to having to heat parts with the working fluid, and to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/08
CPCF01D5/08F05D2260/85F01D19/02F01D25/10F05D2220/31F01K3/186F01K3/26F22B35/14
Inventor K.J.弗鲁特施C.L.赛克斯D.E.韦尔奇E.L.库拉奇
Owner GENERAL ELECTRIC CO