What are the lightning protection measures for amusement equipment in thunderstorm weather
Author: htyl Time: 2020-04-08
Now more and more amusement equipment, amusement equipment in thunderstorm days should be how to protect it? What measures does lightning protection have in thunderstorm weather?
1. Flash connect. The equipment manufacturers are equipped with lightning rods, which are installed on the top of the steel frame, so that all the equipment, including the electrical equipment, sensors and so on, are in the scope of protection. As the distance between the electromechanical equipment is far from the steel frame of the amusement equipment, the 12mm galvanized round steel is selected as the lightning protection belt on the roof of the electromechanical equipment room.
2. Leading off. The steel frame of the amusement equipment is used as the guide wire, the upper end is firmly welded with galvanized flat steel and the top Arrester, and the lower end is firmly welded with the main steel bar in the pile foundation of the steel base of the amusement equipment. The lead-down wires between the mechanical and electrical equipment are made of two 16mm diameter steel bars in the concrete structural column. The top four corners are connected with the lightning protection belt, and the lower part is connected with two steel bars with a diameter of 16 mm in the foundation beam between the bottom and the equipment.
3. Grounding device. 1 The steel structure frame of amusement equipment and all kinds of vertical metal pipes are connected with the steel bars in the bottom of the equipment and in the ground beam as a whole. The steel guardrail of the visitor waiting area is connected with the grounding device, so that the whole place forms a complete equipotential grounding net. 3 equipotential ground plate is arranged on the wall in the mechanical and electrical equipment room, which is used for ground of power distribution box, control box and weak current equipment (broadcasting and communication system) of amusement equipment, and choose flat steel will enter the electrical equipment between the cable metal maintenance pipe, metal water pipe and such potential ground plate connection. Tn-s is selected as the distribution system, and pe conductor is connected with the grounding device in many places. Lightning protection grounding, power distribution grounding and weak current system grounding constitute a combined grounding device, since the equipment of each weak current system, including the equipment for detecting, expanding and controlling each link, is active, the earth resistance is required to be equal to or less than 1 ohm. In order to avoid the disturbance and damage of lightning transient electromagnetic pulse to the control system and the communication, broadcasting and closed-circuit television monitoring system, a surge protector is set up in the power distribution box of the electromechanical equipment room, its flow capacity is equipped with secondary maintenance. The SPD is also set up because of the decoration lighting at the top of the tower.