Vertical face sealing strips for guide vanes of water turbine

A technology for sealing strips and water turbines, which is applied in engine sealing, mechanical equipment, hydropower generation, etc., can solve the problems of difficult water wheel guide vanes, and achieve the effect of easy replacement and easy installation

Inactive Publication Date: 2010-08-04
天津市发电技术设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure can only be used if it is prefabricated when the new unit is designed
For the hydraulic turbine water guide mechanism with hollow sealing strip structure in the power station that has been put into operation, when the sealing strip is to be re

Method used

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  • Vertical face sealing strips for guide vanes of water turbine
  • Vertical face sealing strips for guide vanes of water turbine
  • Vertical face sealing strips for guide vanes of water turbine

Examples

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Example Embodiment

[0012] The specific implementation methods provided according to the present invention are described in detail below in conjunction with the preferred embodiments.

[0013] See the accompanying drawings for details, a water turbine generator guide vane façade sealing strip, including a sealing strip body 1, the sealing strip body is composed of a left sealing strip 2 and a right sealing strip 3 to form an integral sealing strip body, and the sealing The section of the bar body is an isosceles trapezoid with a circular arc on the upper part. In the middle of the integral sealing strip body composed of the left sealing strip and the right sealing strip, there is a reinforcing rib slot 4 with an angle of 25° with the bottom edge, and a reinforcing rib 5 cooperating with it is built in the groove, and the reinforcing rib Stainless steel bars are used. The integral sealing strip body is divided into several sections along the length direction, and the length of each section is 400...

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Abstract

The invention relates to vertical face sealing strips for movable guide vanes of a water turbine, which comprise sealing strip bodies of which the cross sections are in a shape of an isosceles trapezoid with a circular arc on the upper part. The sealing strips are characterized in that each integral sealing strip body consists of a left sealing strip and a right sealing strip, and have the advantages that the sealing strips are improved according to the water wheel guide vanes of operated power stations and are prevented from being torn and falling off by using a non-pressure plate structure with washing resistance, gas etching material resistance and convenient overhauling and replacement; the periphery and upper and lower joints of the sealing strips are insusceptible to water seepage; the sealing strips are convenient to install due to loose manufacturing; and soft adhesive glue is adopted to perform filling and cementation, so that the installation problem of the last sealing strip of each guide vane is solved.

Description

technical field [0001] The invention belongs to water turbines, and in particular relates to a water turbine movable guide vane facade sealing strip for the sealing structure transformation of a power station that has been put into operation. Background technique [0002] The guide vane of the water guide mechanism of the turbine rotates around its own axis between the top cover and the bottom ring to achieve the purpose of adjusting the flow into the turbine according to the change of working conditions. Therefore, in order to make the guide vane rotate flexibly between the top cover and the bottom ring, there is inevitably a gap between the end face and the vertical face, and the existence of this gap has a great influence on the start-up and shutdown of the unit. During the operation of the unit, the brake system is used to stop the machine. After the brake is released, the unit rotates slowly due to the water leakage of the guide vane, which directly affects the safe ope...

Claims

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Application Information

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IPC IPC(8): F03B3/18F16J15/06
CPCY02E10/223Y02E10/20Y02P70/50
Inventor 何凯
Owner 天津市发电技术设备有限公司
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