A Lightning Protection, Shear Resistant Hydraulic Cylinder Device

Abstract

The invention relates to an anti-thunder anti-shear hydraulic cylinder device and belongs to the technical field of application for sealing a wind driven generator brake. The anti-thunder anti-shear hydraulic cylinder device comprises a cylinder body, a piston and a seal ring; the seal ring is arranged between the inner wall of the cylinder body and the outer wall of the piston; the seal ring is made of nitrile rubber and fluorine rubber; a pressure bearing ring protruded out of the surface of the inner wall of the cylinder body is arranged between the inner wall of the cylinder body and the outer wall of the piston; the pressure bearing ring is made of a plastic composite steel plate; the front end of the piston is connected with a vertical screw rod and a horizontal screw rod. Two ends of the horizontal screw rod are connected with a universal iron ball respectively. The universal iron balls tightly cling to the inner wall of the cylinder body. The lateral force generated in the work process of the piston is borne by additionally arranging a guide ring, capable of bearing larger load, in the sealing structure of a piston cavity, so the bias pressure phenomenon of the hydraulic cylinder is greatly reduced, the work condition of the hydraulic cylinder is improved to achieve the aim of prolonging the service life of the hydraulic cylinder, and the maintenance cost of a wind driven generator is reduced.

Description

technical field [0001] The invention relates to a lightning protection and anti-shear hydraulic cylinder device, which belongs to the technical field of wind power generator brake sealing applications. Background technique [0002] With the development of science and technology, the society's demand for energy is constantly increasing, and human awareness of environmental protection is constantly increasing, and the requirements for air quality are getting higher and higher. International and domestic requirements for various non-polluting clean energy, renewable The utilization ratio of new energy sources such as energy continues to increase. Among all new energy sources, wind energy is an energy source that is more convenient to use and has a lower cost of use. The sealing problem is one of the key problems existing in the wind turbine brakes in the international and domestic markets. The working position of the brake of the wind turbine is in the nacelle, which is highe...

AI Technical Summary

Problems solved by technology

[0007] The lateral force of the above two sealing structures is borne by the hydraulic cylinder, which will cause the bias phenomenon of the hydraulic cylinder, and the service life of the hydraulic cylinder will be reduced under the long-term bias

[0008] In addition, the electrical conductivity of the existing hydraulic cylinder piston is poor. When thunder strikes, the charge passes through the hydraulic cylinder, causing the discharge phenomenon between the piston and the cylinder wall, resulting in raised spots on the piston. During the working process, the spots on the piston rub against the hydraulic cylinder. wall, causing scratches on the cylinder wall, causing oil leakage and resulting in maintenance costs

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