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Method and cooling system for cooling blades of at least one blade row

A cooling system, a technology for blades, applied in the field of blades and cooling systems for cooling at least one blade row, capable of solving problems such as pressure rise, insufficiency, complexity, etc.

Active Publication Date: 2014-03-26
ANSALDO ENERGIA SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complex design has separate parts attached to the necessary rotor
[0006] Also many solutions are known which feed cooling air to the blades via rotor holes, however, these solutions can lead to lifetime problems as there is not enough space for feeding cooling air into the rotating blades, the pressure will rise and eventually can be inadequate

Method used

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  • Method and cooling system for cooling blades of at least one blade row

Examples

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Embodiment Construction

[0038] figure 1 A side view of a blade 1 installed in a blade row of a rotary flow machine is shown. The rotary flow machine comprises a flow channel 2 that is radially bounded on the inside by a rotor unit 3 and radially bounded on the outside by at least one stationary component. Typically, the stationary member 4 is a heat shield mounted at the inner wall of the housing surrounding the rotating flow machine. Each blade 1 of the blade row comprises: a shovel foot 5, which is detachably connected to the rotor unit 3; an airfoil 6, which extends radially through the axial flow channel 2 and is exposed to the hot gas flow of the flow channel; and finally the shroud 7 at the end of the blade tip.

[0039] In order to cool the blade 1 it is inventively proposed to feed cooling air 8 radially outwards from the stationary components into the blade 1 through an opening 9 at the tip of the shrouded blade. By supplying the blade 1 with radial cooling air from radially outside throu...

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PUM

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Abstract

The invention refers a method and to a cooling system for cooling blades (1) of at least one blade row, espeically for cooling the blades (1) of the at least one blade row in a rotating flow machinery. The rotating flow machinery comprises an axial flow channel (2) which is radially limited on the inside by a rotor unit (3) and at the outside by at least one stationary component (4), said blades (1) are arranged at the rotary unit (3) and provide a shrouded blade tip facing radially to said stationary component (4). The invention is characterized in that pressurized cooling air (8) is fed through from radially outside towards the tip of each of said blades (1) in the at least one blade row, and said pressurized cooling air (8) enters the blades (1) through at least one opening (9) at the shrouded blades' tip.

Description

technical field [0001] The invention relates to a method and a cooling system for cooling the blades of at least one blade row in a rotary flow machine, such as a gas or steam turbine machine or a compressor unit, comprising an axial flow channel defined by The rotor unit is radially bounded on the inner side and radially at the outer side by at least one stationary member, said blades being arranged at the rotating unit and providing shrouded blade tips radially facing said stationary member. blade tip). Background technique [0002] Cooling heat-exposed components of rotating flow machinery is a common technique used to improve engine efficiency and performance. Cooling of the turbine blades in gas or steam turbine engines is especially important in order to operate such turbines at higher temperatures than would be permitted using uncooled turbine blades. [0003] One well-known cooling technique for rotating blades in rotary flow machines is based on feeding the blades...

Claims

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Application Information

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IPC IPC(8): F01D5/18
CPCF01D5/08F01D5/187F01D5/225F01D11/10F02C7/12F02C7/18F01D5/186
Inventor S.贾斯特C.西蒙-德加多A.海德科S.奥梅斯
Owner ANSALDO ENERGIA SWITZERLAND AG