Research On The Intelligence Control Equip For Cathode Protection

Nowadays, with high speed development of modernization industry, the requirement of people in city for water and natural gas increases day by day, which causes underground steel piping structure increase day by day, but this metals piping is easily suffered the erosion of corrosion medium. Therefore, to construct a thing of protection to the underground metals becomes more and more important. Cathode Protection Technique is one of the most widely used methods.Cathode protection is in a certain way, to give enough cathode electric current at metals structures being protected, with cathodic polarization to make metals electric potential move, thus makes the fuse speed of metals anode decreased greatly, even come to a halt. In this way, the metals structure can be protected from encountering decay break.The research foundation of this topic is the spot of underground piping cathode protection. Collect ratio electric potential value from the spots of metals piping protection and carry on theoretic analysis towards the collection of a great deal data, get changing regulation from it, then make use of misty control calculate way to finish intelligent control, which can according to the change of parameter regulate output current automatically, then make the electric potential value of the metals protection spot be placed in the best value. So reach the purpose of Cathode protection.The main innovation points of this topic are the following :(1) With intelligent control calculate way make the quilt protection piping all attain the best protection electric potential;(2) The use of control and management systems of two class computers. There are two main functions of the hypostasis computer constituted by the list slice computers, first, measure the electrode electric potential of the quilt protection metals; second, transfer the values of two parameters: output electric current and protection electric potential, in fixed time through the wireless net to main computer;(3) Pulse type protection power supply replace former direct current type protection power supply. Pulse power supply is a type power of making use of list slice machine to fulfill the vein breadth modulation and combining control calculate way to change exportation pulse width (share empty ratio), thus change cathode protection electric potential. Besides, each examination spot is provided a main pulse type protection power supply and one with assurance. The performance of the powers is also watched, if some abnormality happens, supervision device should alarm and automatically cut over back up to the power supply with assurance so as to make quilt protection piping in normal usage often year;(4) Wireless net transmit the main circulate parameters of protection piping to the main computer which manifest, save main circulate parameters.