Wear-resistant type shaft sealing device and high-speed gear

Abstract

The invention provides a wear-resistant type shaft sealing device and a high-speed gear, and relates to the technical field of shaft sealing. The wear-resistant type shaft sealing device comprises a shaft sealing piece body, an oil feeding device, a fluid feeding device and an air balance device; the shaft sealing piece body sleeves a rotary shaft, and is provided with a clamping ring, a first sealing component and a second sealing component; the first sealing component and the second sealing component are arranged at the two ends of the clamping ring separately and each comprise cooling fluid sealing parts and oil sealing parts; the cooling fluid sealing parts and the corresponding oil sealing parts are arranged in a spaced manner, thus cavities are formed; the oil feeding device communicates with the oil sealing parts; the fluid feeding device communicates with the cooling fluid sealing parts; the air balance device comprises an air feeder and an air balance valve; the air feeder conveys balance air to the cavities through a first pipeline, and conveys the balance air to the oil feeding device; and the air balance valve communicates with the cavities. The wear resistance of the rotary shaft is improved effectively, the rotating speed and the automation degree of the rotary shaft are raised effectively, the service life of the rotary shaft is prolonged, the service and maintenance cost of the rotary shaft is reduced and the economic benefits are increased.

Description

technical field [0001] The invention relates to the technical field of shaft seals, in particular to a wear-resistant shaft seal device and a high-speed gear. Background technique [0002] At present, the high-speed gear transmissions and other equipment required for major equipment such as petrochemical, aviation, aerospace, ships, nuclear pumps, electric power, papermaking, steel, cement, general machinery, etc. The rotational speed is generally up to 3000 ~ 30000RPM. The high-speed running gears make the lubricating oil distributed in itself subject to a large centrifugal force, and at the same time, the meshing surface generates a lot of heat due to the high-speed running, resulting in accelerated aging and damage of the gears. Therefore, the high-speed rotating shaft and its sealing device are one of the key components in the design of the high-speed gear propulsion system and its use management. How to extend the service life of the shaft seal and how to achieve conve...

AI Technical Summary

Problems solved by technology

The high-speed operation of the gear makes the lubricating oil distributed on itself receive a large centrifugal force, and at the same time, the meshing surface generates a large amount of heat due to high-speed operation, resulting in accelerated aging and damage of the gear

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