Marine anode controller and impressed current cathodic protection system

Abstract

The invention discloses a marine anode controller. The marine anode controller comprises a processing unit, an output unit and a local signal given circuit; the processing unit comprises a microcontroller; the output unit comprises a PWM controller, a full-bridge converter, a voltage and current detection circuit, an output quantity feedback circuit, an error detection circuit and an overvoltage and overcurrent protection circuit; the output quantity feedback circuit comprises a voltage feedback circuit and a current feedback circuit, and the error detection circuit comprises a voltage error detection circuit and a current error detection circuit; and the controller is further provided with a local remote control switching circuit and the local signal given circuit. According to the marineanode controller, the type and the amplitude of signals output to a sacrificial anode can be conveniently switched and changed according to requirements of users. Meanwhile, the invention further provides an impressed current cathodic protection system, the system is composed of a plurality of the anode controllers connected by an industrial computer, the controllers can be controlled separately,the operation is convenient, and the maintenance is convenient.

Description

technical field [0001] The invention relates to the field of anti-seawater corrosion engineering of marine underwater steel structures, in particular to an offshore impressed current anode controller and an impressed current cathodic protection system. Background technique [0002] Large ships and marine engineering require impressed current cathodic protection systems to protect metal structures against corrosion. The power supply equipment of the widely used impressed current protection system is composed of a transformer and a rectifier; the number of output anodes has been determined when the design is finalized, and the output of each anode cannot be adjusted independently; if the number of anodes needs to be increased, it can only be increased The overall number of sets of equipment. In addition, the currently used power supply equipment is relatively large in size and inconvenient to maintain. When a fault occurs and the power needs to be cut off, the power must be c...

AI Technical Summary

Problems solved by technology

The power supply equipment of the widely used impressed current protection system is composed of a transformer and a rectifier; the number of output anodes has been determined when the design is finalized, and the output of each anode cannot be adjusted independently; if the number of anodes needs to be increased, it can only be increased Overall equipment sets

In addition, the current power supply equipment is relatively large in size, and it is inconvenient to maintain.

For protected objects with complex surface structures, due to the small number of power supply anodes and reference electrodes currently used, the components of the protected object cannot be effectively cathodically polarized, and the small number of reference electrodes cannot accurately monitor and protect The potential value of each point of the body

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