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Guide vane assembly for continuous flow machines

A technology of guide vanes and flow machinery, applied in the direction of engine components, mechanical equipment, engine functions, etc.

Inactive Publication Date: 2017-05-03
ANDRITZ HYDRO GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem is that its ductility and breaking point can only be defined and set within very narrow limits

Method used

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  • Guide vane assembly for continuous flow machines
  • Guide vane assembly for continuous flow machines

Examples

Experimental program
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Embodiment Construction

[0007] Now, the present invention will be described based on the example shown in the accompanying drawings, in which, figure 1 Showing a guide vane assembly for a Francis turbine with a bent fractured connecting rod according to the invention, figure 2 A detailed demonstration of a bending fracture link according to the present invention is provided.

[0008] figure 1 A cross-section of a guide vane assembly of a Francis turbine is shown. The shaft 2 of the guide vane can be seen in the figure, which shaft 2 is fixed via a guide vane rod 3 and a connecting rod 4 via a hinged connection to the adjusting ring or rod on the adjusting ring 5 . Thus, by turning the adjusting ring 5 , all the guide vanes can be adjusted uniformly via the guide vane shaft 2 . In an end position, the guide vanes also serve as shut-off valves. Since foreign matter can enter the turbine and the guide vane assembly in the water flow, there is a risk that foreign matter becomes trapped by the guide ...

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PUM

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Abstract

The invention relates to a flow guide device for turbomachinery, in particular for Francis or Kaplan turbines or for pumps or pump turbines, having a plurality of guide vanes ( 3 ) which ( 3) Actuated in each case by a link (4) on the common adjustment element (5). Here, each guide vane or each second guide vane is equipped with a safety element. Its principle is characterized in that an anti-bending link (6), which can have a threaded connection and a bending body (7), is provided as a safety element. The threaded connection is prestressed and configured with a predetermined rupture section (12). Thus, the triggering force on the bending breaking link (6) and the holding force after breaking of the safety element can be selected independently of each other. In this guide device, the guide vanes are protected from being damaged by foreign objects.

Description

technical field [0001] The present invention relates to a guide vane assembly for continuous flow machines, in particular for Francis or Kaplan turbines or for pumps or pump turbines, the guide vane assembly having a plurality of guide vanes, each guide vane The blades are each actuated by a link on a common adjustment element, wherein safety elements are provided and bending breaking elements are provided as said safety elements. Background technique [0002] Adjusting elements on guide vane assemblies are known, wherein each second transmission has a safety element which limits the torque transmitted to the guide vanes during the closing operation. These safety elements are used to prevent the entire torque that the actuating device can exert on the common adjustment element from being concentrated on the guide vane that is prevented from closing if a solid body accidentally enters between two adjacent guide vanes. This concentration of torque can cause damage to the guid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B3/18
CPCF03B3/183F05B2260/3011F05B2260/506F05B2260/79Y02E10/20F01D17/16F01D25/00
Inventor 彼得·诺维茨基克里斯托弗·阿贝利克劳斯·库恩
Owner ANDRITZ HYDRO GMBH
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