Rim sealing device of water-turbine generator set

A technology of sealing device and generator set, which is applied in the directions of hydropower generation, engine components, machines/engines, etc., can solve the problems of unreliable sealing and single sealing method, and achieve the effect of reliable sealing, guaranteeing sealing effect and good stability.

Active Publication Date: 2022-05-10
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention lies in the single sealing method and unreliable sealing between the runner rim of the hydro-generator set and the generator existing in the prior art, thereby providing a hydro-generator set rim seal device

Method used

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  • Rim sealing device of water-turbine generator set
  • Rim sealing device of water-turbine generator set
  • Rim sealing device of water-turbine generator set

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Embodiment 1

[0052] Such as Figure 1 to Figure 3 As shown, the hydroelectric generator set described in the embodiment of the present invention includes a flow channel 1, a fixed guide device 2, a movable guide vane device 3, a main shaft 4, a wheel rim sealing device 5, a runner rim 6, a generator, a water turbine Blade 10. The generator includes a rotor 9 , a stator 8 and a stator support 7 .

[0053] The inside of the flow channel 1 described in this embodiment is provided with a flow channel liner, and the rim sealing device 5 is arranged on the flow channel liner. The fixed deflectors 2 are arranged on both upstream and downstream sides of the water turbine for supporting the main shaft 4 . The turbine blades 10 are installed on the main shaft 4 . The generator rotor 9 is installed on the outer edge of the water turbine blade 10 through the runner rim 6 . The rim sealing device 5 is installed on the inside of the inner lining of the flow channel 1 and cooperates with the runner r...

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Abstract

The invention discloses a water-turbine generator set rim sealing device which is arranged between a water turbine runner and a rotating wheel rim, and the rotating wheel rim is provided with a rotor connecting part. The rim sealing device comprises a magnetic fluid sealing unit and a Y-shaped sealing unit which are arranged on the two sides of the rotor connecting part in the axis direction of the flow channel correspondingly, and the magnetic fluid sealing unit is located between the Y-shaped sealing unit and the rotor connecting part. The outer peripheral sides of the magnetic fluid sealing unit and the Y-shaped sealing unit are in sealing fit with the runner, and the inner peripheral sides are in sealing fit with the rim of the rotating wheel. Zero leakage can be achieved through the combination mode of Y-shaped sealing and magnetofluid sealing, the Y-shaped sealing unit is arranged on the outer side of the magnetofluid sealing unit, on one hand, a large amount of water in a flow channel is prevented from entering the generator, the pressure of the water is reduced, and the reliability of magnetofluid sealing is improved; on the other hand, silt and other particles in the water flow can be prevented from entering the magnetofluid sealing unit, and the sealing effect of the magnetofluid is guaranteed.

Description

technical field [0001] The invention relates to the technical field of water turbine sealing, in particular to a wheel flange sealing device of a water turbine generator set. Background technique [0002] The seal of the water turbine is an important part of the water turbine, and the seal has an important impact on the safe operation of the water turbine. In particular, the generator rotor of a full-flow turbine is directly mounted on the runner rim of the rotating turbine blade, so a seal needs to be provided between the runner and the generator rotor. In order to ensure the normal operation of the generator, it must be ensured that no If any form of water leakage occurs, it is necessary to seal the rim of the turbine so that the water flow in the flow channel cannot contact the generator rotor. The relevant prior art uses the traditional rubber sealing method to seal the rim of the runner. The sealing method is single, and there are problems of pressure resistance, poor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B11/00
CPCF03B11/006F05B2240/57Y02E10/20
Inventor 董彦同高潮张翰李向前
Owner CHINA THREE GORGES CORPORATION
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