The grounding resistance of the grounding device is usually composed of three parts. The first part: the resistance of the grounding body itself, usually the grounding electrode is made of metal, this part of the resistance only accounts for 1% to 2% of the grounding resistance, can be ignored; The second part: the grounding resistance of the grounding electrode and the soil contact part, which accounts for 20~60% of the grounding resistance in general soil; Part Three: The resistance of the current flowing into the soil after flowing through the ground electrode. The resistance of this dispersed flow is determined by the soil resistivity.
The content of active ions in the soil is one of the factors that affect the grounding resistance, and many compounds containing active electrolytic ions in the soil are relatively rare, and the simple grounding body will not meet the grounding requirements. After experimental comparison, reversible slow-release filler is added to the ground electrode. The filler has the characteristics of absorbing water, discharging water and being reversible. This reversible reaction effectively ensures the effective temperature of the environment in the shell and the stability of the grounding resistance. The filler is non-toxic and has good effect on ion formation and corrosion prevention of copper alloy in long-term cooperation with metal electrode. After the ions generated in this way absorb the ground water, the active electrolytic ions can be effectively released into the surrounding soil through the chaozing effect, so that the grounding electrode becomes an ion generating device, so as to improve the surrounding soil quality to meet the grounding requirements. The working principle of initiators and synergistic electrolytic ion fillers
Through the interaction of initiator and synergistic electrolytic ion filler, the chemical treatment for the shell soil is generated to reduce the resistivity of the shell soil. At the same time, a transitional zone is formed between the slow-release grounding electrode and the earth soil. The selection of chemical substances and the composition criteria of the chemical composition are as follows: (1) As a carrier connecting the grounding electrode and the earth, it has the characteristics of good expansibility and strong affinity, which increases the equivalent cross-section area of the grounding electrode and the contact area of the soil; (2) Good adsorption performance, eliminating the contact resistance between the grounding pole and the soil, improving the electric field distribution in the ground; (3) Good permeability, deep into the soil and rock cracks, forming a network of roots, increasing the outflow area in the ground; (4) Absorb water, maintain the balance of water in the shell, and do not lose; (5) No ionization occurs after pulsed current is passed; (6) Protect the grounding electrode from various corrosion and damage in the soil, and have anti-corrosion effect on the electrode.
The principle of the ion grounding rod is very simple, because our soil will contain a part of the active ions active ions, can directly affect the resistance. Now a lot of soil contains more active, electrolytic ions and zinc, electrolytic ions are relatively rare, so in many experiments, people choose to directly use the ionic ground rod. The advantage of the ionic ground rod is that it can maintain good adsorption and permeability, so that no ionization occurs when the electrical pulse current.
