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Lightning protection and lightning protection scheme for HZS75 concrete mixing plant

Author: admin Release time: January 13, 2018 Number of visits:

Thunderstorms in summer HZS75 concrete mixing plant The lightning protection work must be done in place. The manufacturer of Zhengzhou Xinfeng mechanical concrete mixing plant thinks that the powder tank of 75 type concrete mixing plant is high in height, high in altitude, and in thunderstorm weather, lightning protection measures should be taken and lightning rod of concrete mixing station should be installed. HZS75 concrete mixing plant includes 4 powder tanks. Considering the high height of powder tanks, high altitude and thunderstorm weather, lightning protection measures should be taken and lightning rods should be set. HZS75 concrete mixing plant

1、 When the electric charge of HZS75 lightning rod is always on the top of the concrete mixing station, the electric charge of the lightning rod is always on the top of the concrete mixing station. At the same time, the lightning rod forms a capacitor with these charged clouds. Because it is sharp and has little charge, the air between the lightning rod and the cloud is easy to be broken down and become a conductor. In this way, the charged cloud layer and the lightning rod form a path, and the lightning rod is grounded, which can lead the charge on the cloud into the earth, so that it does not pose a danger to the powder tank.

2、 The installation of HZS75 concrete mixing station lightning rod is specific work. A 4 m high lightning rod frame is welded on the top of the tank of the concrete mixing station. The bottom is triangular and tightly welded with the tank top. The top is needle shaped tip, and then a 78.5mm2 aluminum wire with cross section is connected to the ground from the bottom. The four powder cans are connected in series with connecting wires, and the grounding connecting wires are connected with steel connecting wires. To ensure that from the top to the bottom as a whole, so as to achieve the role of lightning protection.

3、 Zhengzhou Great Wall special reminder: 1. In order to ensure that all grounding wires can meet the grounding resistance of no more than 10 Ω, the length of welding seam shall be ensured during the construction of steel bar connection grounding, and the process control shall be strengthened by full-time welding personnel during the joint construction. 2. In order to ensure that the lightning rod can maintain good lightning protection status for a long time, a full-time electrician is arranged to conduct regular inspection and maintenance on the lightning rod.

4、 Acceptance items of lightning rod of HZS75 concrete mixing plant 1. The top of lightning rod is made of Φ 12 steel bar, 4 meters high, and its bottom is welded to the top of ore powder storage tank. 2. The lightning rod is connected to the reinforcement at the bottom of tank body with aluminum wire. 3. Four powder cans are welded together in series with steel bars. 4. The grounding wire is 75cm into the ground with Φ 22 reinforcement. 5. The field test shows that the resistance is 9.2 Ω, which meets the requirements of lightning resistance.