A rpt type water turbine main shaft sealing device

Abstract

The invention discloses an RPT type water turbine main shaft sealing device, which comprises an adjusting cylinder, an end cover, an inner ring, an O-shaped sealing ring, a sealing ring and a rotating ring. The lower end of the cover, the end cover is set on the upper end of the inner ring, and the lower end of the inner ring is connected to the telescopic end of the adjusting cylinder; the upper end of the inner ring is provided with a water inlet hole, and the lower end of the inner ring is provided with an annular groove. A sealing ring is arranged in the groove, and the thickness of the sealing ring is greater than the depth of the annular groove, and a through hole is also provided in the circumferential direction of the sealing ring; The upper end surface is in contact, and the end cover, inner ring, O-ring, sealing ring, rotating ring and turbine main shaft end cover form an airtight sealing chamber; the RPT type hydraulic turbine main shaft sealing device designed in the present invention prevents pressure water from flowing from the main shaft of the water turbine and the water turbine The leakage between the main shaft end covers into the machine pit floods the water guide bearing and affects the operation.

Description

technical field [0001] The invention relates to a sealing device, in particular to a RPT type water turbine main shaft sealing device. Background technique [0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy, and it belongs to the turbomachinery in fluid machinery. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the turbine through the diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the tail water pipe. The higher the water head and the greater the flow, the greater the output power of the turbine. The sealing device of the main shaft of the water turbine is an important part of the water turbine. The sealing device of the main shaft of the water turbine in t...

AI Technical Summary

Problems solved by technology

The sealing device of the main shaft of the water turbine is an important part of the water turbine. The sealing device of the main shaft of the water turbine in the prior art adopts nylon end face seal. Sand clogging and component corrosion, and the use of packing has high requirements on the main shaft of the turbine, and it is easy to damage the sealing performance of the entire sealing device due to vibration or the beating of the main shaft of the turbine itself, causing accidents and other problems

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