Water turbine and turbine guide bearing thereof

Abstract

The invention discloses a turbine guide bearing of a water turbine. The turbine guide bearing comprises a bearing body. The end of the bearing body is connected with a magnetofluid sealing device. The magnetofluid sealing device comprises an electromagnetic device and a bush which is arranged outside a large shaft of the water turbine in a sleeving mode and has magneto-conductivity. The electromagnetic device comprises a magnetic ring arranged outside the bush in a sleeving mode, an electromagnetic coil is wound on the magnetic ring, and annular magnetic poles are arranged at the two ends of the magnetic ring correspondingly. A gap is formed between the inner end surface of each magnetic pole and the bush, and oil-based nanometer Fe3O4 magnetic fluid is absorbed inside the gaps. By using the turbine guide bearing provided by the invention, contact sealing with the large shaft is realized, oil of the turbine guide bearing is prevented from flowing outwards, and outside water is prevented from flowing into the turbine guide bearing. Oil leakage at the end is avoided, the ecological environment is improved, oil loss is reduced, the cooling effect is ensured, and the bush temperature is stabilized. Water flowing along the large shaft or jetted water from a main shaft seal is prevented from entering the turbine guide bearing, the quality of lubricating oil is ensured, the operation cost is lowered, and the power generation quantity is improved. The invention further discloses the turbine comprising the turbine guide bearing.

Description

technical field [0001] The present invention relates to the technical field of water conservancy power generation equipment, more specifically, to a water guide bearing of a water turbine, and to a water turbine including the above water guide bearing. Background technique [0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. The water guide bearing is an important part of the turbine. It is used to support the high-speed rotating large shaft. The gap between the large shaft and the water guide bearing is filled with continuously circulating thin oil to cool and lubricate the large shaft. [0003] see figure 1 , figure 1 It is a schematic diagram of a common water guiding operation structure in the prior art. The blade 06 drives the large shaft to rotate in the water-filled flow channel 01 of the water turbine. The function of the seal 05 of the main shaft of the water turbine is to prevent the water in the f...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the first object of the present invention is to provide a water guide bearing of a water turbine. The structural design of the water guide bearing of the water turbine can effectively solve the problems of oil throwing and creeping along the large axis of the water guide bearing of the water turbine. Water causes oil system pollution and the resulting environmental pollution, waste of water resources, and reduced power generation. The second object of the present invention is to provide a water turbine comprising the above-mentioned water guide bearing

Images