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Reinforced concrete gas turbine outer case

A technology for outer casings and turbines, which is applied in mechanical equipment, engine components, machines/engines, etc., and can solve problems affecting the rotor alignment blade tip clearance and other issues

Inactive Publication Date: 2012-04-18
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal outer casings have thermal structural issues that affect rotor alignment and blade tip clearance within the hot gas path

Method used

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  • Reinforced concrete gas turbine outer case
  • Reinforced concrete gas turbine outer case
  • Reinforced concrete gas turbine outer case

Examples

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Embodiment Construction

[0026] Referring first to FIGS. 1 and 2, the foundation turbine section 10 includes an outer casing 12 that encloses an internal rotor system 14. In this exemplary embodiment, the turbine is a gas turbine, but the present invention is not limited to the gas turbine. The internal rotor system includes multiple stages, as can be understood by those skilled in the art, each of which includes a turbine wheel equipped with an annular row of blades or buckets. Three stages are shown schematically at 16, 18 and 20 in Figure 1.

[0027] The annular outer shell or shell 12 includes an upper substantially semi-cylindrical shell half 22 and a lower substantially semi-cylindrical shell half 24, as best seen in FIG. 2. The upper shell half and the lower shell half are passed through suitable bolts or other equivalent fasteners at aligned horizontal flange pairs 25, 26 and 28, 30 extending longitudinally along the outer shell 12 (Shown), the bolt or other equivalent fastener extends through ...

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PUM

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Abstract

A turbomachine outer case includes a pair of outer case sections, each provided with attachment flanges for securing said pair of outer case sections about an internal rotor structure, the pair of outer case sections constructed of a cement composite material. The outer case sections may be lined with a relatively thin metal alloy.

Description

Technical field [0001] The present invention relates to a foundation-based turbine, and generally relates to an outer structural casing that supports axial and torsional loads transmitted through the turbine during engine operation. Background technique [0002] A conventional turbine outer casing is formed by a large metal-based sand casting, which installs an inner casing structure for supporting (in the case of a gas turbine) the components of the hot gas passage. However, the metal outer casing has a thermal structure problem, which affects the rotor alignment and the blade tip clearance in the hot gas passage. Some attempts have been made to solve the problems associated with metal outer casings by using multiple casings to isolate heat and axial structural loads. [0003] There will be a need to develop less complex casing structures, for example for removing or isolating thermal properties from the outer casing of a turbine such as a gas turbine, and thereby reducing the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/26
CPCF01D25/24F05C2253/04F05D2300/603F01D25/265
Inventor D·戴维森H·罗伯茨
Owner GENERAL ELECTRIC CO