A lightning rod vibration absorbing device for a substation

Abstract

A lightning rod vibration absorbing device for a substation comprises a ring hoop circumferentially sleeving on the outer wall surface of the top of the lightning rod body, the outer horizontal sleeveof the ring hoop is provided with an annular mass block, a spring and a damper are connected between the outer wall of the ring hoop and the inner wall of the annular mass block, a bracket is fixed on the lightning rod body above the ring hoop and extends outward, and the bracket is connected with the upper end face of the annular mass block through a suspension cable. The support frame adopts aplurality of support rods welded on the lightning rod body, and the support rods extend outward and are uniformly distributed on the outer periphery of the lightning rod. The utility model has the advantages of reasonable stress, firmness and reliability, and can effectively fix the vertical height of the annular mass. The annular mass is connected with the ring hoop fixed on the lightning rod surface by spring and damper, and the resonant energy absorption is achieved by using the inertial force or active control force of the annular mass to reduce the structural response, and then the influence of wind-induced vibration is effectively reduced.

Description

technical field [0001] The invention belongs to the field of lightning rod design, and in particular relates to a vibration damping device for a lightning rod in a substation. Background technique [0002] Lightning rod, also known as lightning protection rod, is widely used in power plants and substations as a device to protect buildings or electrical equipment from lightning strikes. The principle of the lightning rod is to install a metal rod on the top of a tall building (or tower), connect a piece of metal buried in the ground with a metal wire, and use the tip of the metal rod to discharge, so that the electricity carried by the cloud layer and the electricity on the ground gradually neutralized so as not to cause an accident. The lightning rods of substations in areas with high frequency of strong winds such as Northwest my country, North China, and Northeast China are affected by the combined influence of strong wind intensity and frequency. The lightning rods are i...

AI Technical Summary

Problems solved by technology

The lightning rods of substations in areas with high frequency of strong winds such as Northwest my country, North China, and Northeast China are affected by the combined influence of strong wind intensity and frequency. The lightning rods are in a swinging state for a long time. Fracture damage occurs in the part, which may eventually cause the fall of the lightning rod

However, the breaking and falling of the lightning rod in the substation will cause damage to other equipment and affect the normal operation of the substation.

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