一种冲击式水轮机配水环管排沙结构及排沙方法

By setting arc-shaped sand discharge ports between adjacent nozzles in the water distribution ring pipe of the impulse turbine and monitoring the sand concentration, the wear problem caused by sand accumulation was solved, and the safety and economy of the equipment were improved.

CN120798624BActive Publication Date: 2026-07-17HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV
Filing Date
2025-06-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In rivers with high sediment content, the distribution ring pipes of impulse turbines suffer severe wear due to sediment accumulation, affecting the safety and lifespan of the unit. Existing treatment solutions are costly and ineffective.

Method used

An arc-shaped sand discharge port is installed between adjacent nozzles in the water distribution ring pipe. The sand concentration is monitored by a sand monitor and a valve controller. The opening and closing of the sand discharge port is controlled to discharge some sand into the tailwater pipe and reduce the concentration in the pipe.

Benefits of technology

It effectively alleviates sediment buildup, reduces wear and tear, extends equipment life, and lowers costs.

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Abstract

本发明公开一种冲击式水轮机配水环管排沙结构及排沙方法。本发明在相邻喷嘴间的管道外壁设置弧切结构的排沙口，同时在配水环管入口处配置泥沙监测器用于检测入口泥沙浓度，当检测到泥沙达到允许通过的最大浓度时，发出开阀信号，位于排沙口处的工作阀打开，排出部分泥沙。本发明能够有效降低管内泥沙浓度，减轻部件磨损程度，能够延长部件使用寿命。
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Citation Information

Patent Citations

  • Suspended load silt purifying and discharging device

    CN204491542U

  • Water distribution ring pipe of impulse turbine

    CN217354580U