35 results about "Anodic protection" patented technology

The invention discloses an aluminum pipe, a heat exchanger and application thereof, and belongs to the technical field of heat exchange materials. The aluminum pipe comprises an aluminum pipe base material layer and a zinc impregnation layer arranged on the surface of the aluminum pipe base material layer. The zinc impregnation layer has a zinc concentration gradient which is gradually reduced from outside to inside; the maximum zinc concentration of the zinc impregnation layer is 0.01 to 10 weight percent; the thickness of the zinc impregnation layer is larger than 0 and smaller than or equal to 400 micrometers. The zinc impregnation layer is formed on the surface of the aluminum pipe base material layer, corrosion can be limited from expanding to the inner layer, longitudinal expansion of corrosion is avoided, pitting corrosion is inhibited, the zinc content distribution of the zinc impregnation layer at different zinc impregnation depths can be controlled by controlling the maximum zinc concentration and thickness of the zinc impregnation layer, and the corrosion resistance of the aluminum pipe is improved. The zinc impregnation layer has a good anodic protection effect on the aluminum pipe, pitting corrosion extension is effectively inhibited, the corrosion resistance of the aluminum pipe is improved, and the service life of the aluminum pipe is prolonged.

The utility model relates to the technical field of sacrificial anode protection, more specifically, a kind of petroleum pipeline thickening anticorrosion sacrificial anode discharge tube. Including pipe body, pipe body is coaxial integrated structure, pipe body includes thickening section, left end thin tube section and right end thin tube section, the wall thickness of thickening section is greater than the wall thickness of left end thin tube section and right end thin tube section, thickening section is set between left end thin tube section and right end thin tube section, left end thin tube section and right end thin tube section length are equal, symmetrically set. The device is a kind of new sacrificial anode discharge tube with optimized structure, efficient protection, stable installation and reliable strength. The utility model is mainly applied to the aspect of petroleum pipeline thickening anticorrosion sacrificial anode discharge tube.

The application discloses a neodymium-iron-boron permanent magnet surface anticorrosion coating and a preparation method thereof, and the preparation method comprises the following steps: pretreating the neodymium-iron-boron permanent magnet, depositing an aluminum-based alloy coating on the surface of the pretreated neodymium-iron-boron permanent magnet through arc spraying, and performing vacuum heat treatment and coating of a sealing agent, wherein the temperature of the vacuum heat treatment is 400 DEG C to 600 DEG C, so that the neodymium-iron-boron permanent magnet surface anticorrosion coating is obtained. The neodymium-iron-boron permanent magnet surface anticorrosion coating of the application can greatly improve the bonding strength and the anticorrosion performance through the construction of a composite protection system of a "metallurgical bonding diffusion layer (bottom layer) + Al sacrificial anode protection layer (middle layer) + sealing agent barrier layer (surface layer)", which has important industrial value for improving the service life of the neodymium-iron-boron magnet in severe environments and widening the application scenarios of the neodymium-iron-boron magnet.

A kind of pipeline's sacrificial anode boost power cathodic protection system, in order to solve the problem that pipeline protection distance is shorter when pipeline without external power supply is often used in sacrificial anode protection, cannot realize synchronous power-off test and cathodic protection and corrosion parameter remote monitoring, detection and other automation management, the technical scheme adopted is: using DC / DC boost module to increase the voltage between sacrificial anode and grounding body as power supply, to improve the protection potential of pipeline and realize each automation management function.Pipeline protected by sacrificial anode boost power cathodic protection system can be adjusted to the upper limit of protection potential to increase the length of cathodic protection of pipeline under the premise of meeting cathodic protection criteria, and realize the automation management functions such as synchronous on-off test, cathodic protection and corrosion parameter remote monitoring, detection of pipeline without external power supply cathodic protection with low cost. Figure 1 is the abstract drawing of the present application.

Embodiments described herein relate to a method of forming a sub-pixel. The method includes depositing an intermediate layer material over a substrate and an anode. The anode is disposed over the substrate. A separation structure material is disposed over the intermediate layer material. A portion of the separation structure material is removed to form separation structures. A first structure material and second structure material are deposited over the substrate. A portion of the first structure material and the second structure material are removed to form a first structure and a second structure. A portion of the intermediate layer material is removed to form an intermediate layer. An OLED material, a cathode, and an encapsulation layer are deposited over the intermediate layer. A resist is patterned in a first sub-pixel. A portion of the OLED material, the cathode, and the encapsulation layer exposed by the second resist are removed.

Embodiments described herein relate to a method of forming a sub-pixel. The method includes depositing an intermediate layer material over a substrate and an anode. The anode is disposed over the substrate. A separation structure material is disposed over the intermediate layer material. A portion of the separation structure material is removed to form separation structures. A first structure material and second structure material are deposited over the substrate. A portion of the first structure material and the second structure material are removed to form a first structure and a second structure. A portion of the intermediate layer material is removed to form an intermediate layer. An OLED material, a cathode, and an encapsulation layer are deposited over the intermediate layer. A resist is patterned in a first sub-pixel. A portion of the OLED material, the cathode, and the encapsulation layer exposed by the second resist are removed.

The invention relates to the technical field of coating preparation, in particular to a formula of a cold zinc spraying anticorrosive coating. The high-performance zinc-aluminum alloy material is prepared by mixing the following raw materials in parts by weight: 1400 to 2700 parts of zinc powder, 1100 to 1500 parts of zinc silicate, 1300 to 2500 parts of aluminum powder, 1100 to 2100 parts of acrylic resin, 1600 to 2000 parts of graphene oxide, 1500 to 1800 parts of polycarbonate and 1000 to 1300 parts of ethylene glycol monomethyl ether. The invention has the following beneficial effects: the zinc powder is used as a main functional filler, can play a role in sacrificial anode protection on the substrate metal under the conditions of coating damage and the like, and delays the corrosion process of the substrate metal through preferential corrosion of the zinc powder; zinc silicate contributes to improving the structural stability of the coating, meanwhile, the zinc silicate and zinc powder have a synergistic effect in an anti-corrosion system, the protection effect on a substrate is enhanced, part of micro-pores in the coating can be filled, and invasion of a corrosive medium is blocked; and the aluminum powder can further improve the oxidation resistance of the coating and the adhesive force to substrate metal, and can participate in formation of a stable protective film layer to a certain extent, so that the overall corrosion resistance is improved.

The utility model relates to the technical field of steel bar rust prevention, and discloses a steel bar rust prevention device with a cathode protected by a sacrificial anode, which comprises two bottom plates, horizontal I-shaped steel brackets are fixedly mounted at the tops of the two bottom plates, and a vertical I-shaped steel bracket is mounted between the two horizontal I-shaped steel brackets; the two sets of supporting and protecting assemblies comprise anode protection metal supporting angle steel installed on the opposite sides of the two horizontal I-shaped steel supports, and an anode protection metal supporting bracket is fixedly installed at the end, away from the anode protection metal supporting angle steel, of the anode protection metal sliding support. The vertical I-shaped steel support can effectively support the steel bars during rust prevention, so that the stability of the steel bars during rust prevention is improved, meanwhile, the subsequent treatment cost of the steel bars due to corrosion can be greatly reduced, the structure is simple, the steel bars only need to be connected with protected metal, and the installation efficiency of the device is greatly improved.

This application relates to the field of hot-air expansion part forming and manufacturing technology, and particularly to a method for preparing highly corrosion-resistant hot-air expansion parts. The method includes: hot-air expanding non-zinc-based coated hot-formed steel to obtain a heat-treated substrate; quenching the heat-treated substrate to obtain a quenched hot-air expansion part; hot-dip coating the quenched hot-air expansion part with a zinc-based coating using a zinc-containing plating solution to obtain a hot-air expansion part containing a zinc-based coating; wherein the hot-dip coating temperature is proportional to the thickness of the quenched hot-air expansion part; and heat-treating the hot-air expansion part containing the zinc-based coating to obtain a zinc-based coated hot-air expansion part. This preparation method, through full-process control of "substrate pretreatment → precise hot-dip coating → coating structure optimization," synergistically optimizes the formation quality, structural stability, and bonding performance with the substrate of the zinc-based coating, improving the corrosion resistance of the hot-air expansion part from three dimensions: physical barrier, sacrificial anode protection, and structural reinforcement.

The application discloses a crown ether polymer and a preparation method and application thereof, and relates to the technical field of material preparation. The preparation method of the crown ether polymer provided by the application comprises the following steps: mixing HHT (4,4',4'',4'''-(6,7,9,10,17,18,20,21-octahydrodibenzo[B,K][1,4,7,10,13,16]hexaoxacyclooctadecine-2,3,13,14-tetrayl) tetrakisbenzaldehyde) and DBD (2,5-diamino-1,4 benzodithiophene) to prepare a reticular crown ether polymer with rich crown ether and thiazole structures. When the crown ether polymer is used as a light anode protective layer, the active specific surface area of an electrode surface can be improved, and Cl ‑ penetration into the light anode can be prevented, so that the active specific surface area of the light anode cannot be reduced, and the cycle performance of the light anode cannot be reduced. Meanwhile, the crown ether polymer has semiconductor characteristics, and can improve the photo-generated carrier separation efficiency of the light anode.

The utility model belongs to the technical field of river and lake bottom mud remediation, and discloses a heavy metal polluted bottom mud in-situ electric remediation device which comprises a double-layer isolation cover, the cathode module is arranged at one end of the bottom of the double-layer isolation cover and comprises a cathode protection cover, the interior of the cathode protection cover is divided into a first cavity and a second cavity through a partition plate with holes, a cation exchange membrane and a cathode electrode are arranged in the first cavity, and a heavy metal adsorption material is arranged in the second cavity; the cathode module is arranged at the other end of the bottom of the double-layer isolation cover and comprises an anode protection cover, and an anode electrode is arranged in the anode protection cover; the cathode protection cover and the anode protection cover are made of insulating hard materials with holes, and the anode electrode and the cathode electrode are connected with a power source through waterproof wires respectively. And the electrolyte supply device is used for conveying acidic electrolyte to the cathode protection cover. The in-situ electrokinetic remediation device for the heavy metal polluted bottom mud is good in remediation effect.

Lithium-magnesium alloy anodes and fluorinated ether electrolytes for lithium-sulfur batteries. The lithium-magnesium alloy anode includes about 90 wt% lithium and 10 wt% magnesium. The lithium-magnesium alloy anode includes at least one anodic protective coating. The electrolyte includes about 0.4 M LiTFSi and about 2 wt% LiNO3 in a fluorinated ether solvent.

The invention provides a reliable detection device and detection method for the potential of an offshore wind power sacrificial anode based on an electromagnet principle, and belongs to the technical field of offshore wind power detection. The detection device comprises a reference electrode, a multimeter, a wire, an electromagnet, a wire length automatic calculation device and a power supply, the reference electrode is connected with the multimeter through the wire, the electromagnet is closely close to the reference electrode, the wire length automatic calculation device is matched with the wire, and the power supply controls the electromagnet to be powered on and powered off. According to the detection method, the wire placement length is set through the wire length automatic calculation device, the electromagnet is powered on to adsorb the surface of the steel structure to achieve positioning, detection points are switched after potential detection is completed, and all-directional detection is achieved through the orientation calibration module. Accurate positioning of the reference electrode is achieved through gravity and magnetism of the electromagnet, environment and man-made interference is eliminated through automatic calculation of the length of the wire and orientation calibration, the detection accuracy is improved, and a reliable basis is provided for sacrificial anode protection effect analysis.

The application discloses a processing method of a five-in-one membrane electrode assembly and relates to the technical field of fuel cells, solves the problems of cutting deviation and difficulty in removing the frame cover film in the manufacturing process of the membrane electrode assembly in the prior art, has the beneficial effects of fewer processes and improved processing efficiency, and specifically has the following technical scheme: a processing method of a five-in-one membrane electrode assembly, which comprises the following steps: preparing a cathode protection film assembly and an anode protection film assembly; cutting the edge side of the cathode protection film assembly and removing the cathode mask raw material on the edge side after cutting; compounding a cathode frame assembly with the cathode protection film assembly after cutting, cutting the active area part of the cathode frame assembly, and removing the cathode active area frame film; cutting the edge side of the anode protection film assembly and removing the anode mask raw material on the edge side after cutting; compounding an anode frame assembly with the anode protection film, cutting the active area part of the anode frame assembly, and removing the anode active area frame film; and packaging a catalyst coating film.

The invention provides a method of improving the cycle-life of a lithium metal secondary battery containing a non-solid state electrolyte, the method comprising implementing an anode-protecting layer between an anode active material layer and a cathode active material layer without using a porous separator, wherein the anode-protecting layer is in a close physical contact with the anode active material layer, has a thickness from 1 nm to 100 μm and comprises an elastomer having a fully recoverable tensile elastic strain from 2% to 1,000% and a lithium ion conductivity from 10−8 S / cm to 5×10−2 S / cm when measure at room temperature and wherein the anode active material layer contains a layer of lithium or lithium alloy, in a form of a foil, coating, or multiple particles aggregated together, as an anode active material.

The invention belongs to the field of non-aqueous lithium oxygen batteries, and discloses a heme-based nano-enzyme and boric acid additive electrolyte and preparation and application thereof. The electrolyte comprises a common electrolyte and a functional additive, wherein the functional additive comprises a heme-based nano enzyme and boric acid. According to the invention, the heme-based nano-enzyme is used for accelerating the redox reaction by removing superoxide anions, so that the discharge capacity of the Li-O2 battery is improved by 67%, and the cycle life is prolonged by nearly 40 circles. Secondly, boric acid is added to promote formation of an SEI layer containing lithium borate, so that the cycle life of the Li-O2 battery containing the nano-enzyme is prolonged by 60 circles, and the deep discharge capacity is improved by 51%. And the two are combined to realize collaborative optimization of cathode catalysis-anode protection, so that the Li-O2 battery is promoted to be practical.

This application relates to the field of water heater technology, and discloses an electronic anode protection device and a water heater. The electronic anode protection device is installed in a water tank and includes: an electronic anode control module, a monitoring module, and a status indication module. The electronic anode control module includes an electronic anode interface for connecting to the electronic anode. The monitoring terminal of the monitoring module is connected to the electronic anode control module, and the control terminal of the monitoring module is connected to the status indication module. The electronic anode control module provides different operating voltages to the electronic anode through the electronic anode interface. The monitoring module monitors the operating status of the electronic anode control module and the operating voltage of the electronic anode, and outputs control commands to the status indication module. The status indication module outputs different indication states. This electronic anode protection device achieves low-cost, pollution-free corrosion protection.

The utility model discloses a composite cathode protection system of an offshore platform stand column, and discloses a composite cathode protection system of an offshore platform stand column, which can combine a dual protection mechanism of sacrificial anode protection and impressed current protection and realize energy conservation and environmental protection through solar power supply. A combined type cathode protection system of an offshore platform stand column comprises a stand column body, a sacrificial anode module, an impressed current protection module and a solar power supply module. The sacrificial anode module provides cathode protection for the stand column body through electrochemical reaction. The impressed current protection module is arranged on the offshore platform and connected with the stand column body. And the impressed current protection module is used for automatically starting and providing supplementary current protection when the allowance of the sacrificial anode module is insufficient. The solar power supply module is used for providing electric energy for the impressed current protection module. The sacrificial anode is combined with an impressed current technology, so that the corrosion protection system can continuously work for more than ten years.

The invention discloses a preparation method of a high-corrosion-resistance coated steel plate, and belongs to the technical field of corrosion prevention of metal materials. The core of the method is that specific zinc pot plating solution components are adopted and comprise, by mass, larger than or equal to 15% and smaller than 21% of Al, larger than or equal to 5% and smaller than or equal to 11% of Mg, larger than or equal to 0.05% and smaller than or equal to 0.5% of Si, larger than or equal to 0.05% and smaller than or equal to 2.0% of CeO is creatively added to serve as a grain refiner, and the balance is Zn and inevitable impurities; wherein CeO is added in the form of oxide. Key parameters of the hot dipping process are as follows: the temperature of a zinc pot is 10-20 DEG C higher than the melting point of a plating solution, the temperature of a plate in the pot is 5-20 DEG C higher than the temperature of the zinc pot, and the cooling rate after plating is not lower than 9 DEG C / s. By adding CeO, the microstructure of the coating is effectively refined, the successfully prepared coating has excellent plate corrosion resistance, sacrificial anode protection capability and good processing formability, the process is stable, and industrial continuous production is easy to realize.

Disclosed is an all-solid-state battery (ASSB) comprising an anode layer, an anode protective layer, a solid electrolyte layer, and a cathode layer in the order, wherein the anode protective layer comprises a carbonaceous material and a particle of a lithiophilic material at least partially coated by a carbon layer doped with nitrogen. In some embodiments, the ASSB comprising the anode protective layer exhibits an improved electrochemical performance.

An electrochemical cell assembly comprising: at least one electrochemical cell or cells comprising—a cathode comprising an electrochemically active material; —an anode comprising an alkali metal or alkali metal alloy layer and a protection layer containing a first layer and a second layer; wherein the first layer comprises a metal and / or non-metal that alloys with an alkali metal and is formed on the alkali metal or alkali metal alloy layer, and an second layer deposited on the first layer, wherein the second layer is an ionically conducting layer having an electronic conductivity of less than 10−5 S cm−1; and—an electrolyte, and wherein the cell assembly further comprises a means of applying pressure to the at least one electrochemical cell or cells.

Disclosed is an all-solid-state battery (ASSB) comprising an anode layer, an anode protective layer, a solid electrolyte layer, and a cathode layer in the order, wherein the anode protective layer comprises a carbonaceous material and a particle of a lithiophilic material at least partially coated by a carbon layer doped with nitrogen. In some embodiments, the ASSB comprising the anode protective layer exhibits an improved electrochemical performance.

The present application relates to the technical field of corrosion-resistant coating, and particularly relates to a preparation method of conductive metal anticorrosion coating, and the coating prepared by the present application can significantly improve the corrosion resistance of the surface of 304 type stainless steel. Compared with the 304SS bare steel without coating, the corrosion potential of the 304SS under the protection of the coating is obviously increased, and the corrosion current density is obviously decreased. The ZIFs / GO composite material is used as the filler of the epoxy resin coating, and helps to prepare the anticorrosion coating with PPY. The ZIFs has unique crystal structure and chemical properties, the GO has excellent barrier performance and mechanical properties, and the PPY has good conductivity and redox performance. The three are mutually synergistic, so that the coating has better comprehensive performance. The ZIFs / GO composite material can enhance the adhesion between the coating and the substrate, and simultaneously improve the barrier performance of the coating. The PPY surface layer can further improve the conductivity of the coating, which is conducive to the anodic protection performance in the corrosive environment, so as to better protect the substrate metal.

This invention discloses a container plate anti-corrosion system and its preparation process. The container plate anti-corrosion system includes a substrate, a pre-base coating on the surface of the substrate, and an electrostatic anti-corrosion coating on the surface of the pre-base coating. The thickness of the pre-base coating is 5-10 μm. The VOC content of the pre-base coating is less than 50 g / L. The container plate anti-corrosion system of this invention significantly improves the anti-corrosion performance, forming a triple synergistic anti-corrosion closed loop. The alloy coating of the zinc-aluminum-magnesium coated steel plate, through the dual effects of sacrificial anode protection and barrier protection, combined with the passivation enhancement effect of the pre-base integrated reagent and the dense shielding function of the electrostatic powder coating, forms a triple synergistic anti-corrosion system of "sacrificial anode protection → interface passivation enhancement → external medium shielding", rather than a simple superposition of the properties of each coating.

This utility model relates to the technical field of mattress netting, and more particularly to a galvanized mattress netting with a double anti-corrosion structure. It includes high-carbon steel wire, with mattress springs connected to the surface of the high-carbon steel wire. Reinforcing components are provided on the outer sides of the high-carbon steel wire and mattress springs. A hot-dip galvanized layer and a passivation layer are provided on the surfaces of the high-carbon steel wire and mattress springs. Anti-corrosion components are provided at the connection points between the high-carbon steel wire and mattress springs. This galvanized mattress netting with a double anti-corrosion structure, through the setting of the hot-dip galvanized layer and passivation layer, effectively blocks the damage to the steel substrate by sacrificial anodic protection and a dense physical barrier, significantly improving the anti-corrosion performance of the netting. The anti-corrosion components continuously prevent the intrusion of corrosive media in humid environments when the coating wears or develops micro-scratches, delaying rust formation and effectively extending the service life of the netting.

The application discloses an alkali-activated gel material for anode coating and a preparation method thereof, and belongs to the technical field of building engineering. The alkali-activated agent solvent is prepared by using lithium hydroxide or a mixture of lithium hydroxide and sodium hydroxide, and by adding specific zinc powder material, the alkali-activated gel material for anode coating has the characteristics of moderate setting time, good electrical conductivity, stable strength, high anode current efficiency after coating and the like, can serve as a conductive medium, and can meet the demand of the market for the sacrificial anode protection of building steel bars.

The invention relates to an oil well downhole casing state online monitoring and protecting device and an operation method, and belongs to the technical field of oil well casing corrosion protection. The device comprises an underground sacrificial anode protection unit, an underground corrosion online monitoring unit and a ground monitoring analysis unit. The underground sacrificial anode protection unit is electrically connected with a casing through an oil sleeve contactor and is used for providing cathode protection current for an underground target casing section; the underground corrosion on-line monitoring unit is arranged below an oil sleeve contactor and is used for monitoring the corrosion state of a sleeve in real time; and the ground monitoring analysis unit is in wireless communication connection with the underground corrosion online monitoring unit and is used for receiving and analyzing the corrosion data and optimizing protection parameters. According to the invention, closed-loop control of corrosion protection and on-line monitoring of the underground casing of the oil well is realized, and the system has the advantages of strong protection pertinence, real-time and accurate monitoring and high intelligent degree.

The utility model relates to the technical field of sacrificial anode monitoring, and discloses a monitoring device for current emitted by a sacrificial anode of an ocean platform, which comprises a sacrificial anode body, a mounting plate fixedly mounted on the side wall of the sacrificial anode body, and a connecting flange fixedly mounted at the bottom of the mounting plate, the sacrificial anode comprises a sacrificial anode body and a monitoring assembly arranged at the side position of the sacrificial anode body, the monitoring assembly comprises a monitoring mechanism arranged at the side position of the sacrificial anode body, the monitoring assembly comprises a detection system, the monitoring mechanism comprises a stabilizing part and a signal conditioner, the stabilizing part is fixedly installed at the top of the sacrificial anode body, and the signal conditioner is fixedly installed at the bottom of the sacrificial anode body. And a current sensor body is fixedly mounted at the other end of the stabilizing piece. The sacrificial anode protection system solves the problems that an existing sacrificial anode protection system lacks an effective current monitoring means, the real-time condition of current emitted by a sacrificial anode cannot be accurately known, and the working state of the sacrificial anode is difficult to judge in time.

The utility model belongs to the technical field of bridge cables, in particular to a bridge cable anti-corrosion protection device which comprises a cable body for a bridge, two stainless steel semi-rings and two plugging covers, one end of each plugging cover is fixedly connected with a connecting rod, a sacrificial anode protection mechanism is arranged between each connecting rod and the corresponding plugging cover, and the other end of each plugging cover is fixedly connected with the corresponding stainless steel semi-ring. An anti-corrosion combined layer is fixedly arranged on the outer side of the cable body, the two stainless steel semi-rings are rotationally connected with each other, and the cable body is movably arranged in the two stainless steel semi-rings in a sleeved mode. The corrosion-resistant cable is reasonable in structural design, through the arrangement of the sacrificial anode bar, the plugging cover, the connecting ring, the stainless steel semi-ring and the corrosion-resistant combined layer, the cable body can be comprehensively subjected to a corrosion-resistant effect, so that the cable body is not prone to being corroded and damaged, the service life of the cable body is prolonged, the sacrificial anode bar which is seriously corroded can be conveniently disassembled, assembled and replaced at regular intervals, and the service life of the cable body is prolonged. The anti-corrosion effect is improved, and the reliability is high.

The utility model provides an optical fiber composite submarine cable joint device, which comprises a connecting cylinder, an optical cable joint box, an intermediate joint and connecting flanges arranged at two ends of the connecting cylinder, the connecting flanges are provided with anchoring devices, and each anchoring device comprises an anchoring base with a first conical connecting part and an anchoring locking piece arranged on the anchoring base. The anchoring locking piece is provided with a second conical connecting part; a stop flange is further arranged in the connecting cylinder, and an anode block is arranged on the outer surface of the connecting cylinder. Through the cooperation of the first conical connecting part and the second conical connecting part, the conical surface generates a self-locking effect under the action of tension, the anchoring contact area and friction force are increased, the steel wire is prevented from slipping, and the reliability in a large-tension scene is improved; the stop flange fixes the position of the cable core, thereby preventing the internal structure of the joint from being damaged due to the suspension and shaking of the cable core in the transportation and installation process, and improving the mechanical stability of the joint. The anode block delays seawater corrosion of the metal shell through a sacrificial anode protection method, and the service life of the connector is prolonged.