530 results about "Cathodic protection" patented technology

An example test station assembly of a cathodic protection monitoring assembly includes a face plate including a plurality of openings. In addition, the test station assembly includes a plurality of test posts to pass through the plurality of openings. Further, the test station assembly includes a plurality of electrically non-conductive identification indicators to connect to the plurality of test posts on the face plate. Each of the plurality of identification indicators including one or more identifying characteristics to identify a corresponding voltage source of a plurality of underground voltage sources associated with an at least partially buried structure, a cathodic protection system for the buried structure, or the cathodic protection monitoring assembly. Still further, the test station assembly includes a plurality of electrical conductors to electrically connect the plurality of test posts to the plurality of underground voltage sources.

The invention belongs to the technical field of buried pipeline corrosion monitoring, and provides a buried pipeline cathode protection corrosion rate on-line monitoring method and system, and the method comprises the steps: laying a multi-dimensional cooperative monitoring sensor array, collecting sensor data, evaluating the health state of a buried pipeline, and if the buried pipeline is in a healthy state, determining whether the buried pipeline is in a normal state or not; the method comprises the steps that a monitoring area is divided into a plurality of corrosion analysis units in a meshing mode, the corrosion analysis units conduct corrosion rate modeling, historical corrosion rate sequences of the corrosion analysis units are sorted, a multi-layer LSTM network model is trained to predict the corrosion rate, and a predicted corrosion rate sequence is obtained; and estimating the end point predicted wall thickness of the buried pipeline in each corrosion analysis unit in the prediction time period and analyzing the dispersion, if the dispersion is high, screening the risk corrosion unit, analyzing the end point predicted wall thickness of the risk corrosion unit or the corrosion analysis unit, judging whether to trigger the regulation and control of the constant potential rectifier, and if the regulation and control of the constant potential rectifier are triggered, judging whether to trigger the control of the constant potential rectifier. And if so, regulating and controlling the output current of the constant potential rectifier.

The invention relates to the field of intelligent fault diagnosis, and particularly discloses an intelligent fault diagnosis method for a buried pipeline cathode protection system, which comprises the following steps of: capturing a data mode hidden in multiple dimensions by fusing information (time characteristics) of test pile parameters changing along with time and position topology and spatial correlation (spatial correlation) among test piles; therefore, the identification capability of the difference between similar representation fault types is effectively improved. The space-time collaborative analysis mode provides a solid foundation for realizing intelligent fault diagnosis with high confidence, high precision and high robustness, and is an important technical path for promoting intelligent operation and maintenance management of the buried pipeline cathode protection system.

The invention provides a device for detecting corrosion rate after cathodic protection of a soil covering type storage tank, and belongs to the technical field of detection equipment for measuring electrical variables, the device comprises a tank body, a protective plate, bases, spherical seal heads, a corrosion rate detection mechanism and a calculation chip, the bases are symmetrically and fixedly connected to two sides of the bottom of the tank body, the spherical seal heads are fixedly connected to two ends of the tank body, and the calculation chip is fixedly connected to the spherical seal heads. Guide rails are symmetrically and fixedly connected to one side in the protective plate, limiting plates are fixedly connected to the two ends of each guide rail, a threaded rod is rotationally connected between the two limiting plates, guide rods are symmetrically arranged on the outer side of the threaded rod, a moving plate is in threaded connection to the outer side of the threaded rod, and the threaded rod is fixedly connected to the output end of a motor; the motor is fixedly connected to the inner top wall of the protective plate, a corrosion rate detection mechanism is arranged on one side of the movable plate, the calculation chip is electrically connected with the corrosion rate detection mechanism, and a corrosion rate calculation module is arranged and used for calculating the corrosion rate according to parameters collected by the corrosion rate detection mechanism and a preset mathematical model.

The invention relates to an energy storage type photo-generated cathode protection coating material and a preparation method thereof, and belongs to the technical field of chemical materials. The coating material is a binary composite material which is composed of nanometer MoO3 and BiVO4. The preparation method comprises the following steps: firstly, preparing nano MoO3 by a precipitation method, and then preparing a nano MoO3 and BiVO4 binary composite material in situ by a low-temperature hydrothermal method, namely the coating material disclosed by the invention. In the coating material, nano MoO3 and BiVO4 are adopted to form a heterojunction material, so that the photoresponse range of BiVO4 is widened, and the photoelectron-hole separation efficiency is effectively improved; meanwhile, nano MoO3 is used as an energy storage material with high theoretical specific capacity, part of photo-induced electrons generated by BiVO4 can be stored in the form of a compound, and in a dark state environment, the electrons stored in MoO3 are released and quickly transferred to the surface of metal or a film-forming substrate, so that cathode protection of the metal in the dark environment is realized; the technical problems that in the prior art, nano BiVO4 is low in electron-hole separation efficiency and poor in metal surface adhesive force, and the cathode protection effect cannot be continued in the dark state are solved.

The invention belongs to the technical field of die steel coatings, and provides corrosion-resistant cold work die steel and a preparation method thereof. The preparation method comprises the following steps: (1) treating the surface of a base material; (2) cold zinc spraying treatment is conducted, specifically, a zinc layer is sprayed to the surface of the cold work die steel through a cold zinc spraying coating, then natural drying is conducted, and pretreated cold work die steel is obtained; (3) PVD hard coating treatment, wherein gasified atoms react and deposit on the surface of the pretreated cold work die steel, and a coating of 3-5 microns is formed; and (4) post-treatment: polishing and cleaning. According to the preparation method, dual protection of cathode protection and a hard coating is adopted for the cold work die steel, the cold work die steel treated through the preparation method has high hardness and high abrasion resistance, the corrosion resistance of the cold work die steel can be remarkably improved, meanwhile, the adhesive force, compactness and storage stability of the coating are remarkably improved, and the cold work die steel can be applied to the field of cold work die steel. Therefore, the corrosion resistance of the cold work die steel under complex working conditions is effectively improved.

The utility model discloses a cathode protection intelligent test pile, which relates to the technical field of gas pipeline multi-parameter data acquisition, and comprises a shell, a quick release device is arranged in the shell, a storage battery is arranged in the quick release device, an electronic device is arranged above the storage battery in the shell, and the electronic device is connected with the storage battery. A pressurizing device is installed at the top end of the shell, a one-way rotating device is installed at the top end of the pressurizing device, and fan blades are rotationally connected to the top end of the one-way rotating device. Fan blades rotate to drive the eccentric rotating wheel to rotate, the first limiting spring pushes the movable end of the sealing block to make close contact with the interior of the sealing shell all the time, after a sealing cavity formed by the sealing shell passes through the air suction hole, the size of the sealing cavity is gradually reduced, and finally air is squeezed into the main body through the air inlet hole; and the air pressure at the electronic device in the shell is increased, so that the heat distribution is more uniform in a high-pressure environment, and the heat dissipation efficiency is improved.

The invention discloses a graphene nano composite material, a modified anti-corrosion coating thereof and a preparation method of the modified anti-corrosion coating. The preparation method comprises the following steps: preparing a reduced graphene oxide / iron oxide / 1-hydroxyethyl-1, 1-diphosphonic acid (rGO-Fe2O3-HEDP) nano composite material by a hydrothermal method, adding the nano composite material as a filler into a coating to prepare the anticorrosive paint, and under the synergistic effect of the three components, providing excellent physical shielding and conductive connection among zinc particles for the coating and increasing the activity of zinc. Compared with a pure zinc coating, the epoxy zinc-rich anticorrosive paint containing the nano composite material is coated on a steel base material, and the coating has more excellent corrosion resistance due to strong physical shielding effect, cathode protection effect and activity regulation and self-repairing effect of an active factor 1-hydroxyethyl-1, 1-diphosphonic acid.

The present invention belongs to the technical field of concrete, and specifically relates to a CFRP-SMA smart reinforced concrete structure that integrates cathodic protection, stress perception, and self-regulation of bearing capacity. In the CFRP-SMA smart reinforced concrete structure provided by the present invention, the SMA embedded optical fiber and the CFRP composite reinforcement wrapped with the external CFRP are concrete reinforcement bars, and are also auxiliary anodes of ICCP to prevent steel bar corrosion; at the same time, the SMA has the ability to adjust stress after excitation, and the embedded optical fiber can sense the stress state of the composite reinforcement. This structural system greatly improves the durability of concrete structures in coastal environments, solves the problem of real-time intelligent perception and bearing capacity regulation of structural service, and provides a new solution to the performance degradation problem caused by the deterioration of CFRP anodes during the use of traditional ICCP.

The utility model discloses a cathode protection device for a buried steel pipeline in a gas plant station, which comprises a test pile and a rod-shaped anode, the test pile is provided with a junction box wiring panel, the junction box wiring panel is provided with a plurality of wiring terminals, one end of a first wiring terminal and one end of a second wiring terminal are connected with the steel pipeline, and the other end of the first wiring terminal and the other end of the second wiring terminal are connected with the rod-shaped anode. The rod-shaped anode is connected to the third wiring terminal through a first cable; and the third wiring terminal, the first wiring terminal, the second wiring terminal and the fourth wiring terminal are sequentially connected through copper connecting sheets. According to the utility model, the problems that the impressed current scheme interferes with the surrounding metal stray current, the ground bed site selection distance and economy are poor, and the sacrificial anode scheme has short service life are solved.

The invention provides a method for simulating potential distribution of a cathode protection system under a complex corrosion condition, which belongs to the technical field of cathode protection and comprises the following steps of: acquiring polarization data of cathode metal under different dissolved oxygen, pH, temperature and stress conditions by using a workstation; carrying out machine learning on the polarization data to obtain a multi-dimensional polarization database of polarization behaviors of the protected metal and dissolved oxygen, pH, temperature and stress; and establishing a geometric model according to the cathode protection system, taking the multi-dimensional polarization database as an electrode boundary condition of the model, and simulating potential distribution of the cathode protection system through simulation software. The method solves the problem that an existing cathode protection numerical simulation model does not consider the influence of the complex corrosion environment on the cathode potential distribution, can accurately predict the potential distribution of the cathode surface and the evolution process thereof, and can provide reference for the protection and monitoring of a cathode protection system in the complex corrosion environment. And the corrosion risk of the cathode protection device is greatly reduced.

The utility model provides a cathode protection device for a pipeline, and belongs to the technical field of cathode protection. The cathodic protection device for the pipeline comprises a bottom plate and a mounting box, the mounting box is mounted at the top of the bottom plate, a lead screw is rotatably mounted on the inner wall of the mounting box, a connecting sleeve is mounted on the surface of the lead screw, a connecting frame is mounted at the bottom of the connecting sleeve, a clamping frame is mounted at the bottom of the connecting frame, and the clamping frame is mounted at the bottom of the connecting frame. A through groove is formed in the bottom of the inner wall of the mounting box, the clamping plate is mounted on the inner side of the clamping frame, the clamping plate is arranged in an arc shape, and a cathode mounting piece is mounted on the inner side of the clamping plate. And the protection mechanism clamps the pipeline, and the situation that when welding and other modes are adopted for connection, the pipeline needs to be manually treated, and much time is wasted is avoided.

The invention discloses a gradient polyaniline bionic anti-corrosion coating and a preparation method, and belongs to the technical field of metal surface anti-corrosion materials. A polyaniline composite system with a gradient conductive function is constructed by simulating the space electron transfer characteristic of a sulfur reducing bacteria biological membrane; comprising a low-oxidation-state polyaniline conducting layer, a semi-oxidation-state polyaniline transition layer and a high-oxidation-state polyaniline semiconductor layer which are arranged on the bottom layer, a continuous potential gradient is formed between the layers through oxidation degree differences, and a micro electric field opposite to a natural corrosion potential direction is generated on a metal matrix and a coating interface in an induced mode. A micro electric field formed by the conductive gradient of the coating effectively inhibits spontaneous migration of corrosion electrons, surface oxidation-state components compensate local potential difference through reversible oxidation-reduction reaction, and a bottom high-conductivity layer accelerates charge dissipation in the anode polarization process. The gradient polyaniline coating disclosed by the invention shows double protection effects of cathode protection and physical barrier on a metal substrate in hydrogen sulfide corrosion environments such as oil and gas conveying pipelines and ocean platforms.

A coated steel sheet providing cathodic protection and suitable for manufacturing a press hardened part with good powdering resistance during press-hardening and good corrosion performance. A method for the manufacture of hardened parts starting from a steel sheet coated with a metallic coating. The part has good characteristics with respect to corrosion and powdering resistance. The present disclosure is particularly well suited for the manufacture of automotive vehicles.

The invention relates to the technical field of equipment corrosion prevention, and discloses a life self-sensing sacrificial anode and cathode protection device which comprises a protection execution unit, a data acquisition unit and a remote sensing unit. Wherein the protection execution unit comprises an anode block, a conductive connecting piece and an adsorption device, one end of the conductive connecting piece is embedded into the anode block, the other end of the conductive connecting piece is fixed with the adsorption device, and the adsorption device is detachably connected with the protected steel structure. A working electrode of an electric quantity metering device of the data acquisition unit is electrically connected with the conductive connecting piece, and a counter electrode is electrically connected with the steel structure in the adsorption device combination area. And the remote sensing unit is in signal connection with the data acquisition unit and is used for receiving the acquired current data. According to the invention, remote real-time monitoring of cathode protection current is realized, the defect that the state of a traditional anode is unknown is overcome, and predictive maintenance is facilitated; meanwhile, the adsorption type detachable structure does not need underwater welding, the installation and replacement process is greatly simplified, and the engineering applicability and the maintenance efficiency are improved.

The utility model relates to the technical field of pipeline detection, and provides a cathodic protection potential detection device and a cathodic protection potential detection system.The cathodic protection potential detection device comprises a first detection shoe, a second detection shoe and a host, and the first detection shoe is provided with a first reference electrode; the second detection shoe is provided with a second reference electrode, and the first reference electrode and the second reference electrode are used for detecting the potential of the buried pipeline; the host is connected to the first detection shoe and the second detection shoe and is used for determining a first potential value of the first reference electrode and a second potential value of the second reference electrode, and the host is suitable for obtaining a calibration potential value by correcting the first potential value and the second potential value. According to the cathodic protection potential detection device, the first potential value obtained by the first reference electrode and the second potential value obtained by the second reference electrode are corrected through the host to obtain the calibration potential value, data measured by the reference electrodes can be corrected in real time while potential detection is completed, and the accuracy of buried pipeline detection is greatly improved.

The invention relates to the technical field of underground pipeline protection, in particular to an intelligent cathode protection device for an underground pipeline, which comprises a ground and a frame, the frame is buried below the ground, a clamping mechanism is arranged in the frame, two cushion blocks are fixedly mounted on the upper surface of the ground, and the two cushion blocks are fixedly mounted on the lower surface of the ground. The two cushion blocks are fixedly connected to the lower surface of the power box. The rotating wheel is buckled in the shell, the rotating wheel is protected, the rotating wheel is prevented from being collided, and then a first clamping plate is prevented from being separated from the underground pipeline; an electrode wire penetrates through a through hole in the frame to be connected with a power box; the frame and the underground pipeline are filled with soil to be buried, and the frame and the underground pipeline are buried below the ground; the underground pipeline is fixed through the internal structure of the frame, the frame and the internal structure can be made of stainless steel materials, the outer wall is coated with anti-corrosion paint, corrosion in soil is avoided, and the clamping mechanism cannot be cracked by insects to be broken when the clamping mechanism is located underground.

A steel bar corrosion cathodic protection intelligent regulation and control method based on magnetic induction comprises the following steps that 1, data collection and synchronization are conducted, specifically, magnetic field data around a steel bar are collected in real time through magnetic induction sensor arrays evenly distributed in the circumferential direction, and environment temperature, humidity and chloride ion concentration parameters are synchronously obtained; 2, three-dimensional corrosion parameter analysis is carried out; 3, carrying out dynamic current distribution decision making; 4, performing protection current execution and monitoring; and 5, performing prediction optimization: predicting a corrosion trend in future set time by using an LSTM neural network, and adjusting a protection strategy in advance. The invention further provides a steel bar corrosion cathode protection intelligent regulation and control system based on magnetic induction. According to the method, accurate adaptation of non-uniform corrosion is achieved, energy consumption is optimized, and the local damage risk is avoided.

The utility model discloses a cathode protection zinc alloy sacrificial anode, which belongs to the technical field of sacrificial anodes, and comprises a sacrificial anode body and a connecting block fixed on the side surface of the sacrificial anode body, a protection box is arranged outside the sacrificial anode body, and the outer surface of the protection box is fixedly connected with a fixed box. A movable mechanism is arranged in the fixing box, and a baffle is arranged above the connecting block. According to the cathode protection zinc alloy sacrificial anode, the baffle is pulled, so that the baffle does not limit the connecting block any more, the sacrificial anode body is directly taken out, the effect of being convenient to disassemble is achieved, a new sacrificial anode body is placed in the protection box, the connecting block extrudes the baffle to enter the protection box, and the sacrificial anode body is prevented from being damaged. The movable mechanism drives the baffle to reset, the baffle limits the connecting block, and therefore the connecting block and the sacrificial anode body are fixed into the protection box, the cover plate is installed, and the effect of convenient installation is achieved.

The invention provides a method and a device for testing hydrogen doping of a buried steel pipe under a cathode protection condition. The method and the device solve the technical problem that an internal hydrogen permeation-external hydrogen adsorption synergistic effect mechanism faced by a buried pipeline cannot be reflected in an existing test. The method comprises the following steps: establishing a dual test environment under a cathode protection condition, forming a control group and an experimental group of a corrosion test piece to be tested, deploying the control group in a single soil environment, and deploying the experimental group in internal and external hydrogen environments; the power-on potential and the power-off potential are continuously monitored in the dual test process; quantitative comparison of key parameters of the control group and the experimental group is formed according to the double test periods; and constructing a multiple regression model according to the key parameters in combination with potential correction data to quantify the correlation between the corrosion rate and the hydrogen embrittlement sensitivity. The double-environment coupling effect in the actual operation of the pipeline is synchronously simulated, and the diffusion path difference of hydrogen atoms in metal lattices and the influence of double-environment superposition on the corrosion rate are more truly reflected.

The application discloses a method for monitoring and controlling corrosion environment of an underwater concrete structure in a brackish water area, and the method comprises the following steps: laying a monitoring system, monitoring the concentration of chloride ions, analyzing data of the distribution of the concentration of chloride ions, dividing the area according to the concentration of chloride ions, adjusting an impressed current, and giving a warning of the corrosion environment; the brackish water area is divided into a constant saltwater area, a constant freshwater area and a brackish water interface change area by continuously collecting data of the concentration of chloride ions and constructing a concentration field and a gradient field model, so that the risk degree of the corrosion environment can be directly reflected, and the cathodic protection parameters can be dynamically adjusted according to the real-time corrected chloride ion concentration field model, thereby realizing the intelligent monitoring, early warning and control of the corrosion environment of the underwater concrete structure in the brackish water area.

Provided herein are non-invasive and non-destructive methods for classifying the type of external corrosion defect and the severity thereof in the cathodic protection system on a buried pipeline. Mathematical tools and algorithms are utilized to classify the type and the severity of the corrosion defect.

The application relates to a quick repairing device and method for underwater plug-in electric connector cathode protection, and belongs to the technical field of marine metal corrosion prevention, in particular to a quick repairing device and method for impressed current cathode protection of an underwater plug-in electric connector applied to a marine floating platform. A plurality of underwater plug-in electric connector sockets are arranged on a composite cable; underwater plug-in electric connector plugs can be inserted into the underwater plug-in electric connector sockets; one of a rod-shaped auxiliary anode and a reference electrode is separately arranged on the underwater plug-in electric connector plugs; a plurality of preset underwater plug-in electric connector sockets are arranged on the composite cable; and sealing devices with waterproof functions are arranged on the composite cable to seal the underwater plug-in electric connector sockets, the underwater plug-in electric connector plugs and the preset underwater plug-in electric connector sockets.

This invention relates to a spindle assembly for a drum-shaped filter screen, comprising: a spindle, a first bearing, a first bearing housing, a second bearing, a second bearing housing, a first brush shaft, a first brush holder, a second brush shaft, and a second brush holder. The first brush holder is sealed to the side of the first bearing housing opposite to the second bearing housing. One end of the first brush shaft is connected to the fixed end of the spindle, and the first brush shaft is located inside the first brush holder. A first current collector flange is provided on the outer wall of the first brush holder. The second brush holder is sealed to the side of the second bearing housing opposite to the first bearing housing. One end of the second brush shaft is connected to the floating end of the spindle, and the second brush shaft is located inside the second brush holder. A second current collector flange electrically connected to the second brush shaft is provided on the outer wall of the second brush holder. The cathodic protection system and the potential measuring device can be independently electrically connected to the spindle via the first brush shaft and the second brush shaft, respectively, thus the potential measuring circuit is not affected by the cathode busbar circuit.

Cathodic protection of steel in a concrete column in sea water is simplified by providing a pre-assembled unit including a jacket to surround the column carrying a bulk sacrificial anode outside the jacket and optionally an inner sacrificial anode with a cast grout inside the jacket. The jacket can also include a pre-assembled junction box and couplings to connect to the steel. The jacket is attached to the surface of the column at the water line so that the bulk anode is located below the surface of the water. The bulk anode can be formed of aluminum so as to be less toxic in sea water. An activator is applied inside the jacket either as a wicking layer or as a chemical activating material. The jacket can act only as a form work which is then removed after casting of the grout.

An anode apparatus for mounting on an external surface of a concrete structure to provide cathodic protection of metal members in the concrete uses a pre-assembled body which is typically elongate carrying a longitudinal anode, which can be sacrificial or impressed current, together with a supporting material having a front face for attachment to the surface and an impermeable plastic covering material at the rear face covering the anode and the supporting material when the front face is attached to the surface of the concrete. A channel defined on the front face is arranged to receive a layer of a conformable ionically conductive adhesive material for attachment to the external surface. A distance of the edge of the covering material is arranged to be similar to a distance of the metal from the external surface such that wetting and drying effects of environmental moisture are the same for the anode as for the metal components. 20 25 20 17 30 11 M ar 2 02 5 A B S T R A C T 2 0 2 5 2 0 1 7 3 0 1 1 M a r 2 0 2 5 m a t e r i a l w h e n t h e f r o n t f a c e i s a t t a c h e d t o t h e s u r f a c e o f t h e c o n c r e t e . A c h a n n e l

The application discloses a kind of critical conductivity simulation calculation method and system of chain structure impressed current protection, by building COMSOL simulation model, according to wire diameter, chain structure size, metal material conductivity, set current physical field related parameters in COMSOL software, for simulating calculation under different conductivity caused potential attenuation;According to the seawater conductivity obtained in test, the conductivity of metal material, polarization curve, set the secondary current distribution physical field related parameters in COMSOL software, and combine the potential attenuation obtained in current physical field as boundary condition simulation potential distribution under steady state in seawater, if potential distribution reaches the requirement of protection potential, the conductivity corresponding to potential attenuation at this time is critical conductivity.The method can accurately and conveniently evaluate the critical conductivity of chain structure impressed current cathodic protection, and provide a reference for the design of chain structure impressed current cathodic protection system.

The application discloses a kind of light-assisted anticorrosion coating materials and preparation method based on metal coordination structure, the light-assisted anticorrosion coating material is on the basis of traditional anticorrosion metal zinc layer continue to be coordinated with the metal coordination polymer Co (bpy) (dhbq) (bq) with photoelectric conversion capability, and form coordination complex Co (bpy) (dhbq) (bq) @Zn.Because metal coordination polymer Co (bpy) (dhbq) (bq) itself can additionally generate photo-generated electron and photo-generated current after being illuminated, provide redundant charge for Zn layer, make it be in lower potential, strengthen the function of cathodic protection.Corrosion can be inhibited through this mechanism, prolong the service life of Zn layer, provide efficient, green anticorrosion protection for the steel material that needs to be protected.In addition, metal coordination light-assisted anticorrosion technology can also inhibit marine bioattachment by slowly releasing metal ions Co, prevent biofilm formation, reduce microbial growth, prolong the service life of protected material in marine environment, also applicable to underwater bioinduced corrosion and the protection of fouling metal structure.

The invention discloses a photo-assisted anti-corrosion coating material based on a metal coordination structure and a preparation method, the photo-assisted anti-corrosion coating material is continuously coordinated with a metal coordination polymer Co (bpy) (dhbq) (bq) with photoelectric conversion capability on the basis of a traditional anti-corrosion metal zinc layer to form a coordination compound Co (bpy) (dhbq) (bq) (at) Zn. Due to the fact that the metal coordination polymer Co (bpy) (dhbq) (bq) can additionally generate photo-generated electrons and photo-generated currents after being illuminated, redundant charges are provided for the Zn layer, the Zn layer is made to be in a low potential, and the cathode protection function is enhanced. Through the mechanism, corrosion can be inhibited, the service life of the Zn layer can be prolonged, and efficient and green anti-corrosion protection is provided for steel and iron materials needing to be protected. In addition, by slowly releasing metal ions Co, the metal coordination light-assisted anticorrosion technology can inhibit marine organism adhesion, prevent biofilm formation, reduce microbial growth and prolong the service life of a protected material in a marine environment, and is also suitable for underwater organism induced corrosion and protection of stained metal structures.

The utility model relates to anode stick replacement technical field, especially a kind of auxiliary mechanism and in-service pipe fitting cathodic protection anode stick anti-infiltration replacement device, it includes, main component, the main component includes welded short pipe, set up on the pressure ball valve of welded short pipe;Auxiliary component, the auxiliary component includes the support piece set up on pressure ball valve, set up on the auxiliary piece of support piece, set up in the pusher of auxiliary piece, set up in the mounting piece of auxiliary piece;Wherein, the mounting piece is detachably connected with the support piece by the pusher;It can reliably, infiltration-free complete the installation and replacement operation of anode stick main body under pipeline operating state, improve the maintenance efficiency of cathodic protection system and the continuity and safety of pipeline operation, and can effectively block the infiltration path of water body in pipeline after anode stick installation after anode stick installation, ensure long-term sealing performance under pipeline operating state.