Constant-current intermittent cathodic protection and corrosion acceleration system and implementation method thereof

A cathodic protection, accelerated corrosion technology, applied in the field of constant current intermittent cathodic protection and accelerated corrosion systems, can solve the problems of accelerated corrosion test and cathodic protection requirements, accelerated corrosion, etc., to avoid or weaken corrosion, electrochemical corrosion inhibition, convenient predicted effect

Inactive Publication Date: 2014-01-15
CCCC FOURTH HARBOR ENG INST +4
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing accelerated corrosion test power supply system that cannot perform accelerated corrosion at a constant rate and simultaneously meet the needs of multi-channel reinforced concrete structure specimens for accelerated corrosion tests and cathodic protection, and disclose a constant current intermittent cathode Protection and Acceleration Corrosion System and Implementation Method

Method used

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  • Constant-current intermittent cathodic protection and corrosion acceleration system and implementation method thereof
  • Constant-current intermittent cathodic protection and corrosion acceleration system and implementation method thereof
  • Constant-current intermittent cathodic protection and corrosion acceleration system and implementation method thereof

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Embodiment Construction

[0027] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of the present invention. The present invention mainly includes a cathodic protection circuit 2 that automatically recognizes load impedance changes and maintains a constant current intermittent output, an accelerated corrosion circuit 1 that automatically recognizes load impedance changes and maintains a constant current output, and a switching module 4 for switching between the two circuits. Both of them are provided with a shared circuit 3 . The common circuit 3 includes a pulse width modulation single-ended converter 31 (inverter) and a PWM constant current control module 32 .

[0028] Such as figure 1 , figure 2 As shown, the accelerated corrosion circuit 1 of this embodiment that automatically recognizes changes in load impedance and maintains a constant current output mainly includes an accelerated corrosion load module 11 , a pulse width modulation single-ended converter 31 and a PWM c...

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Abstract

The invention relates to a constant-current rate intermittent cathodic protection and corrosion acceleration system and an implementation method thereof in the field of impressed current cathodic protection technologies and the experimental investigation thereof. The constant-current rate intermittent cathodic protection and corrosion acceleration system performs multiway constant-current output intermittent cathodic protection and corrosion acceleration functions, and a corrosion acceleration system and a cathodic protection system are provided with a common PWM (pulse-width modulation) constant-current control module and PWM single-ended converter. The constant-current rate intermittent cathodic protection and corrosion acceleration system conducts cathodic protection in a constant-current intermittent manner, so the cathodic protection cost is reduced; and meanwhile, the constant-current rate intermittent cathodic protection and corrosion acceleration system also performs a function of conducting corrosion acceleration at a constant-current rate, so the corrosion states of steel bars can be accurately predicted; the constant-current adjustable characteristic of the constant-current rate intermittent cathodic protection and corrosion acceleration system satisfies technological requirements of RC (reinforced concrete) structures with different numbers of steel bars and a impressed current cathodic protection and a common system module is used for providing the two functions, so the cost is saved.

Description

technical field [0001] The patent of the present invention relates to the field of impressed current cathodic protection technology and its experimental research, specifically a constant current intermittent cathodic protection and accelerated corrosion system and its realization method. Background technique [0002] With the increasing saturation of traffic construction in my country in recent decades, more and more old bridges, old docks and old building structures have been corroded and damaged due to unfavorable environments, and urgently need to be repaired, strengthened and anti-corrosion. At present, in order to study the corrosion damage mechanism of reinforced concrete structures, the accelerated corrosion test of applied current is often used, that is, a direct current is applied between the steel bar (used as an anode) and the auxiliary cathode (such as titanium mesh or copper mesh, etc.), so that Cl -1 Such harmful media quickly accumulate on the surface of the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/06C23F13/04
Inventor 胡若邻萧澎伟刘铁根李国豹苏林王刘诗净冯晓莉檀会春
Owner CCCC FOURTH HARBOR ENG INST
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