44results about How to "Improve lightning protection performance" patented technology

The invention discloses a transformer box with a lightning protection function and a lightning protection method for the transformer box, and relates to the technical field of electric equipment supporting facilities. The invention comprises a box body, an inner wall of the box body is fixed with a line assembly; an inner wall of the box body is fixed with an electrical installation plate; a surface of the box body is fixed with a plurality of first lightning protection components; a surface of the box body is fixed with a plurality of second lightning protection components ; A first round rod is fixed between the second lightning protection components; one surface of the box body is connected with a box door through a hinge; one surface of the box door is fixed with a door lock; one surface of the box body is fixed with a ventilation component; Both are fixed with a first bracket; the opposite surface of the box body has a first rectangular hole. The invention prevents lightning strikes through the double insurance of the first lightning protection component and the second lightning protection component, the ventilation component effectively prevents rainwater from being blown into the box by the wind, and the cable management component fixes and protects the electrical appliances in the box, which has the advantages of safety and reliability.

The invention provides an underground electric vehicle wireless charging device. The underground electric vehicle wireless charging device is arranged below the ground of a parking place, and comprises a charging main machine core, charging transmitting coils, a heat dissipation circulation device and a dehumidifying device. The heat dissipation circulation device is used for dissipating heat of the charging main machine core, and the dehumidifying device is used for dehumidifying the interior of a cavity of the heat dissipation circulation device. The charging main machine core comprises an NFC module, a microcontroller, a Bluetooth communication module, a power conversion circuit, a working state indicator, a power switch controller, a wireless communication module and a metering circuit. The functions of machine starting, remote payment management and charging management can be achieved. The underground electric vehicle wireless charging device has the advantages of being high in safety and good in lightening-protection effect, occupying a few city space resources, beautifying the city environment and the like.

The invention aims to provide a tower node connection device made from a composite material and an installation and application method. The connection device adopts all composite material for connection, and solves the influence of a metal connection member, adopted to connect a main pole and a cross arm, on the insulating performance of a composite material tower and the problems on tower weight and lightning proof arrangement brought about by the metal connection member. The device mainly comprises the main pole, a hoop and the cross arm. The hoop includes a hoop main body, an insert-connection base and a reinforcing wall. The cross arm has a round or polygonal cross section. The main pole adopts a composite material winding structure, and has a tapered whole body. The cross arm is formed by pultrusion or winding molding and has a conical or columnar structure, and the external part of the cross arm is of shed structure. The node hoop is formed by resin transfer molding, and has a boss reverse locking structure at the part insert-connected with the cross arm. The device makes full use of the insulation gap between the electrified part of the tower head and the grounding part to realize line corridor compression and lightning protection improving effects.

The invention relates to a lightning protection device which comprises a shell and electrodes. Arc extinguishing chambers and at least two electrode chambers are formed in the shell, the inner-wall surface of each arc extinguishing chamber is round and smooth, the arc extinguishing chambers and the electrode chambers are arranged in a staggered manner, each arc extinguishing chamber is provided with two openings which are communicated with the two adjacent electrode chambers respectively, and each arc extinguishing chamber is communicated with the outside through an arc blowing passage; a lightning receiving face is arranged at each of two ends of each electrode, the electrodes are placed in the electrode chambers, the lightning receiving faces at the two ends of the electrodes are exposed in the arc extinguishing chambers on two sides of the electrode chambers at the same time to communicate the arc extinguishing chambers on the two sides, and a flashover gap is reserved between the two lightning receiving faces in each arc extinguishing chamber. The lightning protection device is free of charge accumulation effect, less prone to being broken down under identical gap voltage and capable of improving line insulation level; especially when being on a high-voltage power distribution line network, influence on power distribution quality caused by voltage fluctuation of the power distribution network due to great lowering of voltage of the power distribution network because of frequent misoperation discharging of the lightning protection device can be avoided.

The invention belongs to the technical field of wires and cables, and particularly relates to an aluminium alloy conductor coaxial electrical unit type optical power composite cable. The aluminium alloy conductor coaxial electrical unit type optical power composite cable consists of a cable core, a shielding layer (12) coated outside the cable core in an overlapping manner, and an outer sheath (13) extruded and coated outside the shielding layer in a semi-extruding process manner; rip cords (11) are arranged between the outer gap of the cable core and the shielding layer; and the cable core comprises optical cable units and power line units. The aluminium alloy conductor coaxial electrical unit type optical power composite cable is characterized in that the cable core is formed by an inner layer unit and an outer layer unit positioned outside the inner layer unit. The aluminium alloy conductor coaxial electrical unit type optical power composite cable has the beneficial technical effects of excellent corrosion resistance, light weight, low price, good creep resistance, no relaxation phenomenon of a joint at a low temperature, high shielding performance, excellent lightning resistance, good bending performance, capability of achieving one path of power supply by a single coaxial power line, and the like.