Frist，Introduction

Lightning rod, also known as lightning needle is used to protect buildings and other means to avoid the lightning. Lift is a lightning rod lightning rod in one. Lift lightning rod specifications must comply with GB standards require every level of lightning protection lightning rod specifications are not the same. Install a metal rod at the top of tall buildings, connected by a wire buried in the ground with a metal plate, using a metal rod tip discharge, the electric power of the cloud and the ground gradually brought in and, so as not to cause accident.

My company's lift lightning rod designed for lifting structure, set up to solve the high altitude aviation obstacle lights flash unable maintenance and replacement problems at high altitude, and can also ensure that the contact surface lift pass mine safety and reliability, aviation, aviation lights and lightning pick as a whole, to avoid damage by lightning discharge aviation obstruction lights. Because all power lines, electrical appliances and lifting devices are located in the interior lightning rod bushing enables lifting device from damage, long-term stability, and with easy installation, maintenance and replacement is easy, beautiful appearance characteristics.

(Lift lightning rod structure diagram)

Second, the principle

Charged clouds appear in thunderstorms, high-rise over time, lift and tall lightning rod on top of a large number of charges have been induced due to lightning rod lift the needle is sharp, so the electrostatic induction, conductor tip always gathered the largest number of charges. Thus, the lift lightning rod to gather a majority of the charge. Those charged with lightning and clouds form a capacitor, because it more pointed that the two plates of the capacitor is on the small size, capacitance also small, which means it can hold a charge very little. And it most of the charge accumulation, so that when the charge clouds more air lift between the lightning cloud and breakdown easily become conductive. Thus, the charged clouds and lightning rod lightning rod forming pathway is grounded lightning rod can lift the clouds on the charge into the earth, it does not rise buildings pose a danger to ensure its safety.

Third, the main role

Conventional lightning can be divided into anti Watch lightning, lightning sensors and integrated anti-lightning. Watch the anti-lightning arrester is generally composed of three parts, namely, air terminals, down conductors and grounding; air terminals are divided into lightning, lightning conductor, lightning belt, lightning network. To lift lightning air terminals of lightning as the principle is: the lightning rod through the wire access underground formation with the ground potential difference, using its height, so that the electric field strength of the electric field to limit distortion cloud lightning, began ionization and downward leader discharge; lift the tip of lightning discharge generated in the strong electric field, forming up a pilot discharge; both joined to form a path of lightning, followed spilled into the earth, to lightning effect. In fact, lightning is triggered lightning needle can be led around by lightning and early discharge lightning current will pass through its own grounding conductor to the ground to avoid the protected object directly struck by lightning.

Fourth, the installation requirements

Note that if you install the air terminal building but no ground or ground effect is not good, when lightning actually building or one of the staff would cause greater damage than did not install air terminals buildings actually more secure. 2007 occurred in Kaixian lightning accident, because the classroom is composed of reinforced concrete roof panels, which do not have a good grounding reinforcement, occurs when the thunder and lightning, nowhere to bleed, which through the roof and walls of the classroom interior personnel to discharge, resulting in primary school classroom seven people were killed and dozens injured in the tragic accident.

According to the chapter 'lightning protection devices' requirements GB50057 "Building Lightning Protection Design Code" 5, the receptor can use copper, tin-plated copper, aluminum, aluminum, hot-dip galvanized steel, stainless steel, copper plated outer surface steel and other materials, as long as the minimum cross-section and meet the requirements of their thickness can be. In other words, as long as not so easy to rust, not because of wind and rain and easily damaged, the most common metal materials can be used to make air terminals. The most common lightning rod of iron for example, GB50057 require a minimum diameter of not less than 8 mm can be.

In this sense, the vast majority of construction steel market, as long as its diameter greater than 8 mm, can be used to produce lift lightning rod, just after the installation of brushing up on its surface can be one to two layers of rust , the price is very cheap. In this sense, there is no brand of lightning, because lightning air terminals in only a small class, and any metal components can be used for air terminals. Only emphasized the role of lightning rod lift, emphasizing the brand's famous lightning rod, while ignoring the role of other common lightning air terminals, ignoring the lightning arrester out deflectors and grounding devices can not play the role of objective fact, this the idea is harmful and needs to be corrected.

(Lift lightning rod structure diagram)

Bowls law in accordance with scientific principles, careful investigation of the scene, well-designed, calculated and verified in accordance with national norms honestly construction site, to the protection of places are done, so that we can achieve safe, reliable and affordable purposes.

The so-called ball method, is to assume a certain radius (depending on the degree of protection of buildings, 100 meters, 60 meters, 45 meters, 30 meters range) sphere, rolling along the outer surface of the building, when lightning hit the ball just when the device to the ground, without touching the parts need to be protected, the protected portion of the receptor is obtained. In layman's terms, this sphere is to be able to reach places where lightning can hit, the ball is in the reach of the scope of protection of the air terminals.

Calculate the scope of air terminals, and in GB50057 "Building Lightning Protection Design Code" Appendix D 'grounder method to determine the scope of protection of the receptor's' lists calculation of single lightning rod (lightning), two high lightning rod, two non-high lightning rod, a rectangular arrangement of four high lightning rod, lightning single line (with lightning, lightning protection zone), lightning protection two contour lines the scope of protection of the calculation method, and the related schematic drawing.

For the majority of the lightning protection industry and technical personnel, in accordance with the method GB50057 given, you can use the manual way to calculate some simple cases, but in their daily work, often encounter cases listed on much more complex than the standard site conditions, such as: multi-branch does not contoured arranged in a regular manner lightning rod, no contour line of lightning, lightning rod and joint range of lightning protection line, the calculation of these complex situations , it was impossible to manually conducted, GB50057 did not give a specific method of calculation. This problem is a technical problem in lightning protection industry often encountered.

Fifth, we provide professional services include:

(A) Pre-sale services: We accept product customization and OEM production needs lift lightning rod. Even with a standard product, due to different customers different requirements, some indicators are not the same concern. As long as you put forward arguments about lightning rod lift requirements, from total height, shut height, wind resistance, vertical load, partial load, lifting time,, yaw to the power requirements of form, weight, installation methods, we are responsible for your custom a part of your lift lightning rod.

(B) Service: Our company can provide our customers and friends arrange technical staff to guide the installation. Warranty: One year replacement, a three-year warranty and lifetime maintenance (within 48 hours to reach the scene).

Lift lightning and more product details, please visit our Web site and collections：http://www.wxgallo.com/

(Figure: lift lightning rod bracket)