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Title:
【発明の名称】回転再生式空気予熱器用半径方向シール装置
Document Type and Number:
Japanese Patent JP3239141
Kind Code:
B2
Abstract:
A rotary regenerative air preheater having a rotor mounted to a central rotor post for rotation within a surrounding housing whereby heat absorbent material carried in the rotor is alternately exposed to a flow of heating gas and a gas to be heated. A radial seal assembly including a flexible sealing strip is mounted to the hot end edge of each radially extending partition of the rotor to establish a seal between the partitions and the confronting face of the sector plate of the housing as the rotor is rotated. The flexible sealing strip has a tapered configuration such that the distal edge of the sealing strip and the confronting face of the sector plate define a controlled radially extending gap when the air preheater is in a hot-operating condition. A protective tip is mounted on the distal edge of the flexible sealing strip to prevent premature failure due to edge fracturing. The rigid back support leaf biases the flexible sealing strip, pretensioning the flexible sealing strip to eliminate gapping due to gas-air pressure differentials.

Inventors:
Fierce kurt michael
Application Number:
JP53550497A
Publication Date:
December 17, 2001
Filing Date:
March 31, 1997
Export Citation:
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Assignee:
Alstom Power, Inc.
International Classes:
F28D19/04; (IPC1-7): F28D19/04
Domestic Patent References:
JP54149059A
JP5347646A
JP5771981A
JP59231396A
Other References:
【文献】米国特許4593750(US,A)
【文献】米国特許4940080(US,A)
【文献】米国特許4997028(US,A)
Attorney, Agent or Firm:
Katsuzo Asakura