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Components with precision surface channels and hybrid machining method

A component and channel technology, applied in the field of micro-channel cooling, can solve the problems of component temperature distribution/profile unevenness, low heat transfer rate, etc.

Inactive Publication Date: 2012-11-21
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this cooling strategy often results in relatively low heat transfer rates and uneven component temperature distribution / profile

Method used

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  • Components with precision surface channels and hybrid machining method
  • Components with precision surface channels and hybrid machining method
  • Components with precision surface channels and hybrid machining method

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Embodiment Construction

[0032] The terms "first", "second" and the like used in this specification do not indicate any order, quantity or importance, but are used to distinguish different elements. The terms "a" and "an" used in this specification do not denote a quantitative limitation, but mean that there is at least one of the referenced items. The quantitative qualifier "about" is inclusive of the stated value and has the meaning dictated by the context (eg, includes the degree of error associated with measurement of the particular quantity). Furthermore, the term "composition" includes blends, mixtures, alloys, reaction products, and the like.

[0033] Additionally, in this specification, the suffix "(s)" is generally intended to include both the singular and the plural of a defined term, and thus, one or more of that term may be included (e.g., unless otherwise stated, "flow aperture" may include one or more flow holes). Reference throughout this specification to "one embodiment," "another em...

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Abstract

Methods of forming one or more grooves in a component are provided. One method includes using a first machining technique to form one or more preliminary grooves in an outer surface of a substrate. Each preliminary groove has a base and extends at least partially along the outer surface of the substrate, and the substrate has an inner surface that defines at least one hollow, interior space. The method further includes using a second machining technique to further machine the preliminary groove(s) to form the respective groove(s). In addition, the method includes forming one or more access holes through the base of a respective groove to connect the respective groove in fluid communication with the respective hollow interior space (114). Components with grooves comprise a sidewall radius R in a range of 0 R 0.127 mm.

Description

technical field [0001] The present invention relates generally to gas turbine engines and, more particularly, to microchannel cooling in gas turbine engines. Background technique [0002] In a gas turbine engine, air is compressed in a compressor and then mixed with fuel in a combustor to produce hot combustion gases. The energy obtained from the gas from the High Pressure Turbine (HPT) drives the compressor, the energy from the gas from the Low Pressure Turbine (LPT) drives the fan in turbofan aircraft engine applications, and also in marine and industrial applications outer shaft. [0003] Engine efficiency increases with combustion gas temperature. However, the combustion gases heat various components in the corresponding flow channels / pathways, and therefore, cooling is required to prolong the life of the engine. Typically, the hot air path components are cooled by exhaust air from the compressor. This cooling process reduces engine efficiency because the exhaust air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23H9/10B23H9/16F01D25/12
CPCY02T50/672F05D2230/11F05B2230/90F05D2230/14F05D2230/13F05D2230/90F01D5/186F01D5/288Y02T50/676F01D5/183F01D5/189Y02T50/60Y10T83/0304Y10T428/24322
Inventor R·S·班克魏斌
Owner GENERAL ELECTRIC CO