Oil-free lubrication Kaplan turbine runner

Abstract

The invention discloses an oil-free lubrication Kaplan turbine runner. The oil-free lubrication Kaplan turbine runner comprises a hub body, a blade and a blade servomotor; a water injecting hole is formed in one side of the hub body for injecting clear water or other environment-friendly liquid in a hub before an unit is operated; a drain hole is formed in the bottom of the hub body for draining water in maintenance; the blade servomotor includes a cylinder body, a cylinder cover, a cavity and a piston rod; the cylinder body or the piston rod is connected with the blade through a blade connecting rod mechanism; a blade inner and outer shaft sleeve is arranged between the blade and the hub body; and shaft sleeves on the blade inner and outer shaft sleeve, the blade servomotor and the blade connecting rod mechanism are all self-lubricating bearings. The oil-free lubrication Kaplan turbine runner can adopt the water to replace lubricating oil in a conventional runner hub body, adopts the self-lubricating bearings suitable for the runner operation environment as bearings of a runner motion pair and a friction pair to enable the runner to smoothly operate without polluting rivers, adopts an anti-leaking measure to reduce the risk of the runner leaking oil to the rivers, and can be widely applied to axial flow type and cross flow type Kaplan turbines.

Description

technical field [0001] The invention relates to a water turbine component, in particular to an oil-free lubricated propeller type water turbine runner. Background technique [0002] The inside of the traditional paddle runner is completely filled with oil, and the oil inside the runner is guaranteed to have a certain pressure. Filling the runner with oil is mainly to lubricate the bearings of the blade pivot and linkage mechanism and other components, prevent water from entering the runner, and at the same time achieve the effect of rust prevention of metal parts and lubrication of seals. Although the probability of oil leakage from the runner to the runner is very low, over time, component wear, seal aging, and unexpected accidents will increase the risk of oil leakage. When there is a problem with some parts of the runner, such as the failure of the blade seal and the breakage of the discharge cone bolt, it will cause a large amount of oil to leak into the river, causing ...

AI Technical Summary

Problems solved by technology

When there is a problem with some parts of the runner, such as the failure of the blade seal and the breakage of the discharge cone bolt, it will cause a large amount of oil to leak into the river, causing environmental pollution and causing social problems

In addition, if the inside of the runner is immersed in river water, the lubricating function of the oil will be reduced, causing damage to the runner components

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