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Thermoplastic last-stage blade

A thermoplastic, blade technology, applied in blade support elements, engine elements, machines/engines, etc., can solve problems such as poor efficiency, complex workload, trouble, etc., and achieve the effect of improving vibration damping performance

Inactive Publication Date: 2011-03-23
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the blade geometry, these damping lines or shrouds often have to be placed on the blade with great difficulty, which in turn leads to poor efficiency and requires a complex workload

Method used

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  • Thermoplastic last-stage blade
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  • Thermoplastic last-stage blade

Examples

Experimental program
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Embodiment Construction

[0040] Identical or similar components are identified with the same reference numerals in the figures. The schematic illustrations in the figures are schematic and not to scale.

[0041] figure 1 An exemplary embodiment of a turbine blade 100 according to an exemplary embodiment of the invention is shown. The turbine blade 100 has a damping region 101 provided with a damping layer 103 . The damping layer 103 has a fiber-matrix system 200 (see figure 2 ). The fiber-matrix system 200 has a thermoplastic matrix 201 (see figure 2 ), the reinforcing fibers 202 are embedded in the thermoplastic matrix 201 (see figure 2 ).

[0042] The turbine blade 100 is as figure 1 There are shown two vane regions 102 surrounding the damping region 101 . The blade region 102 is formed, for example, from another composite layer 107 , which in turn can be composed of a plurality of further fiber layers 105 . If the further fiber layer 105 is made, for example, of reinforcing fibers 202 o...

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Abstract

The present invention provides a thermoplastic last-stage blade. The present invention provides a turbine blade (100). The turbine blade (100) includes a damping zone (101) with a damping layer (103) and the damping layer (103) has a fiber matrix system (200). The fiber matrix system (200) has a thermoplastic matrix (201). Reinforcing fibers (202) are embedded in the thermoplastic matrix (201).

Description

technical field [0001] The invention relates to a turbine blade. Furthermore, the invention relates to a turbomachine, in particular a steam turbine. The invention also relates to a method for manufacturing a turbine blade. Background technique [0002] Rotor blades mainly made of steel are currently used in turbomachines, especially in steam turbines. Especially for large stationary steam turbines with a large diameter, the achievable speed of rotation for rotor blades made of steel is limited due to the high dead weight. It is conceivable here to use rotor blades made of fiber composite material in order to significantly reduce the mass of the blades, which in turn enables an increase in rotational speed. [0003] For stationary steam turbines with a large diameter and thus a large blade length, undesired vibrations also occur which have to be damped. Therefore, currently by means of additional damping lines placed on the blade surface ( ) or bands for vibration damp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/16F01D5/28F01D5/26
CPCF01D5/282F05D2300/436
Inventor C·埃伯特D·哈耶A·朗坎普M·曼泰
Owner SIEMENS AG