An energy-dissipating ferrule for reducing the wind-induced response of a lightning rod and its construction method
A wind vibration response, lightning rod technology, applied in the field of lightning rods, can solve problems such as weak lateral stiffness, lightning rod structure damage, fracture damage, etc., to achieve the effects of easy construction, changing structural damping, and changing mode shapes
Active Publication Date: 2020-10-16
STATE GRID GANSU ELECTRIC POWER CORP
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Problems solved by technology
However, the structure of the lightning rod is a towering structure, and it is composed of multiple thin-walled hollow circular steel pipes. The lateral stiffness is weak, and strong vibrations often occur under the action of wind load. Fracture damage occurs near the weak position, resulting in damage to the structure of the lightning rod
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] refer to Figure 1-Figure 3 , an energy-dissipating ferrule for reducing the wind-induced response of a lightning rod, including an inner ferrule 1, an outer ferrule 2, a flexible steel plate 3 and a windshield 4, and the inner ferrule 1 and the outer ferrule 2 are each composed of two semicircular hoops A bolt connecting plate is arranged at the butt joint of the two semi-circular hoops, and the two semi-circular hoops are fastened and connected by connecting bolts 5 on the bolt connecting plate. The method of bolt connection is conducive to quick replacement of the ferrule after it is cor...
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The invention discloses an energy consumption hoop for reducing wind vibration response of a lightning rod and a construction method of the energy consumption hoop. The energy consumption hoop comprises an inner hoop and an outer hoop. The inner hoop is sleeved and fixed on the lightning rod steel pipe; an outer hoop is arranged outside the inner hoop, a flexible steel plate is arranged between the inner hoop and the outer hoop, the flexible steel plate surrounds the periphery of the inner hoop to form a bent ring shape, an inner ring of the bent ring shape is fixedly connected with the periphery of the inner hoop, an outer ring of the bent ring shape is fixedly connected with the inner wall of the outer hoop, and a wind shield is arranged on the outer side of the outer hoop. According tothe invention, wind is not directed, the energy consumption hoop is arranged outside the lightning rod steel pipe; the wind load drives the outer hoop to rotate under the action of the outer wind shield, the outer hoop drives the outer ring of the flexible steel plate to rotate while the inner ring of the flexible steel plate is fixed, the flexible steel plate is deformed, kinetic energy of the wind load acting on the outer hoop is converted into internal energy of deformation of the flexible steel plate to be consumed, and accordingly vortex-induced vibration effect of the lightning rod is weakened. The whole device is simple in structure, convenient to assemble and disassemble and easy to construct.
Description
technical field [0001] The invention belongs to the technical field of lightning rods, and in particular relates to an energy-dissipating ferrule for reducing the wind-induced response of lightning rods and a construction method thereof. Background technique [0002] With the development and application of information technology, the demand for electricity consumption is growing rapidly, and the pace of substation development is also accelerating. At present, the substation frame structure and lightning rod gradually adopt steel structure frame, and the steel structure frame has also been more and more widely used in the substation frame structure. However, the structure of the lightning rod is a towering structure, and it is composed of multiple thin-walled hollow circular steel pipes. The lateral stiffness is weak, and strong vibrations often occur under the action of wind load. Nearby, fracture and damage occur at the weak position, resulting in damage to the structure o...
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IPC IPC(8): H02G13/00
CPCH02G13/80
Inventor 艾宪仓张广平王秀丽黄炜张四江尚建国梁岩涛程荣荣朱中城
Owner STATE GRID GANSU ELECTRIC POWER CORP