117 results about "Splash zone" patented technology

A system for use in petroleum production at sea includes a guide frame for one or more riser pipes, on a semisubmersible production vessel. One or more main buoyancy member are arranged separately on at least one riser to carry the main part of the riser's weight. Each riser separately carries a Christmas tree on its top, near a main deck of the vessel. The guide frame comprises vertical main elements extending vertically downwards from the deck, through the splash zone and through the upper, more wave- and current-influenced zone of the sea. The guide frame also includes horizontal guide plates comprising vertically open cells formed of a horizontally arranged framework of beams. Lateral stabilization devices guide the risers' and the main buoyancy members' vertical movement relative to the vessel and restrict horizontal movement of the risers with respect to the guide frame. The guide plates are arranged in at least two levels on the guide frame. A lower guide plate is arranged at the lower ends of the vertical main elements', and a guide plate is arranged just below or near the splash zone. At least one main buoyancy member is held on the riser in level with, and guided by, lateral stabilization devices arranged in one or more guide plates below the upper, more wave- and current-influenced zone near the sea surface. The risers are without buoyancy elements through the splash zone, and thus are less exposed to the water forces in the upper zone of the sea.

The invention provides a super-thick film anticorrosion coating of a splash zone marine steel structure. The super-thick film coating consists of base paint, surface paint and mat coat surface paint, wherein the base paint is double-component epoxy base paint; the curing agent is amine; the surface paint comprises double components A and B; and the mat coat surface paint is one of double-component acrylic surface paint, double-component fluorocarbon surface paint and organic silicon surface paint. The super-thick film anticorrosion coating ensures that a marine steel facility can safely serve for more than 30 years in the severe environment of a splash zone, and has extremely high application value; and the surface paint is thick film epoxy surface paint, so the construction thickness can be reached by one to two procedures, the construction process is simplified and the construction expense is reduced.

The invention discloses an automated test device for simulating an ocean level fluctuation zone and a wave splash zone. The automated test device comprises a water storage tank, wherein the water storage tank is connected with a corrosive water tank through a tide control system, a wave splash control system is connected between the water storage tank and the corrosive water tank, the corrosive water tank is internally provided with an ocean temperature control system and is provided with an air blowing system, the tide control system, the wave splash control system, the ocean temperature control system and the air blowing system are connected with a PLC (Programmable Logic Controller) system, and the PLC system receives a temperature control parameter, an air blowing control parameter, a tide control parameter and a wave splash control parameter and sequentially transmits the parameters to the ocean temperature control system, the air blowing system, the tide control system and the wave splash control system. The automated test device can be used to control water inlet/outlet time, retention time of high/low tide level, cycle times, wave splash time, wave splash interval and the like in a full automatic manner; and in addition, an air blowing process can be added optionally as required so as to accelerate the test, so that the labor intensity is reduced greatly and the test efficiency is improved.

The invention discloses a bridge prefabricated foundation and a bed-burying method thereof. The bridge prefabricated foundation consists of a bridge lower part pier body, an undercut bearing platform and a cavity formed by enclosing the pier body and the bearing platform. The undercut bearing platform is reserved with a guide hole, an exhausting recharging hole and a supporting liner plate. The bed-burying method comprises the following steps of: integrally prefabricating the lower part pier body and the bearing platform in a factory; excavating a foundation ditch, and then paving a crash pad layer; and sinking a pile which passes through the crash pad layer and is inserted into a sea (or river) bed. A range of 5 to 30 m below a designed height mark of the top of the pile and is filled with core filling concrete, and a supporting pile and a bearing pile are cut to the designed height mark underwater. The prefabricated foundation is positioned through a guide pile, and is placed on the supporting pile which is provided with a supporting component. The guide pile is cut underwater, and the cavity is poured with concrete to ensure that the prefabricated foundation is firmly connected with the pile. The top surface of the lower part pile body of the bridge prefabricated foundation must be higher than water surface and higher than a splash zone. The bearing platform of the prefabricated foundation is completely buried into the sea (or river) bed to ensure that the water resistance ratio can be reduced, the construction period can be shortened, the influence on the environment can be reduced, and the engineering cost is low.

The invention provides a seawater corrosion resistant submerged arc welding wire rod and a welding wire thereof. Both the wire rod and the welding wire comprises the following elements (according to the weight percent): C is equal to or less than 0.12, Si is equal to or less than 0.3, Mn is 1.0 to 1.8, S is equal to or less than 0.020, P is equal to or less than 0.020, Cr is 0.60 to 1.50, Ni is 0.15 to 0.50, Mo is 0.10 to 0.30, Cu is 0.05 to 0.30, Ti is 0.01 to 0.08, B is equal to or less than 0.005, Al is equal to or less than 0.030, and the rest is Fe and inevitable impurity elements. The invention also provides the application of the welding wire to the submerged arc welding wire matched with the seawater corrosion resistant steel Q345C-NHY3. The deposited metal of the welding wire provided by the invention has the advantages of excellent dynamic performance, welding performance and seawater corrosion resistant performance, which can be used for welding the seawater corrosion resistant steel. The welding wire rod and the welding wire of the invention are applicable to the structure with high corrosion resistance requirement in the immersion zone and the splash zone of the sea.

The invention relates to the technical field of material corrosion testing and discloses an intermittent immersion corrosion test method and intermittent immersion device based on a slow tensile stress corrosion testing machine. A tensile section of a sample is fixed to the intermittent immersion device, the two ends of the sample are fixed to a connection rod (12) and a base (13) of the slow tensile stress corrosion testing machine respectively, corrosion media can soak the sample in the corrosion box (1) at intervals through a corrosion box (1), a pump (3) and a liquid inlet hole (6) and a liquid outlet hole (7) in the corrosion box (1), slow tensile stress corrosion testing is combined with intermittent immersion testing, and stress corrosion resistance of a metal material in the tidal and splash zone environment can be evaluated more scientifically. The method has the advantages of being high in operability, low in reformation cost, high in practicality and the like, and can adapt to different types of slow tensile stress corrosion testing machines, round bar samples, rectangular samples and samples in other forms. The testing device is simple in structure and convenient to disassemble and assemble, and normal use of the slow tensile stress corrosion testing machine is not affected.

The invention provides a method for repairing and reinforcing pile foundations in ocean splash zones. The method is characterized by comprising the following steps: firstly carrying out interface treatment on the splash zones and the zones needing repair near the splash zones aiming at different pile body types, fixing end hoops for bearing upper construction loads on the lower edges of the repaired zone, installing external molds and then continuously pouring a self-compaction ultra high toughness cementitious composite (UHTCC). The method has the following beneficial effect: erosion of dry-wet alternation and chloride ion permeation in the splash zones, temperature difference and sea wave impact effect can be effectively resisted, thus ensuring the durability of pile bodies under the environmental condition of severe corrosion.

The invention discloses a compound of a metal organic framework encapsulation corrosion inhibitor and a preparation method and application thereof. The compound is composed of a ZIF metal organic framework material and the corrosion inhibitor encapsulated in the ZIF metal organic framework material. A composite material system is applied to a sea wave splashing zone, and carbon steel or a metal product make a metal organic framework generate defects due to the local acidic environment in the initial stage of dry-wet circulation alternating corrosion, so that the corrosion inhibitor is released, and targeted protection of a corrosion-induced region can be realized. Furthermore, the copper ion modified thiazole corrosion inhibitor is encapsulated in the metal organic framework so that highertransfer capacity can be obtained. Meanwhile, copper ions are desorbed from a pre-coordinated corrosion inhibitor shielding site under an acidic microenvironment, and microbial corrosion caused by growth of various aerobic bacteria on the surface of a substrate can be further inhibited. The corrosion inhibition system is high in targeting property, efficient, durable, high in cost performance, remarkable in application value and wide in market prospect.

The invention belongs to the technical field of environment test and observation. An impeller blade provided with teeth at the edge is utilized for rotating and flapping a test medium to produce waves and stirring liquid to move, and by virtue of comprehensive adjustment of liquid level in a corrosion test box, rotating speed of the blade and height of a sample frame, three corrosion regional environments, namely a splash zone, a tidal and splash zone and an immersion zone are simulated at the same time. The accelerated corrosion test device capable of simulating the marine environment is composed of a test box, an impeller provided with a driving system, the sample frame and the test medium, wherein the impeller is horizontally arranged in the test box (1) in the axial direction, an impeller shaft (2) is arranged above the liquid level, a blade (3) is a toothlike edge, and the sample frame (4) is fixed on the inner wall and/or bottom of the test box. The accelerated corrosion test device provided by the invention is simple in structure, strong in designability, wide in application range, easy to operate and high in efficiency, can simulate marine environment corrosion tests in different corrosion areas and different intensities, guarantees repeatability of test results and is applicable to simulation of the marine environment corrosion tests on various marine materials and components.

The invention discloses a solvent-free epoxy glass flake coating for sea splash zone steel structures and a preparation method thereof. The coating is composed of a component A and a component B. The component A comprises a bisphenol A epoxy resin, a hydrogenated bisphenol A epoxy resin, a reactive diluent, a defoaming agent, a leveling agent, a wetting and dispersing agent, a thickening thixotropic agent, a silane coupling agent, an ultraviolet absorbent, a salt-mist-resistant aid, titanium white, ferrophosphorus powder, mica powder, an antirust filler, 160-mesh glass flakes and 325-mesh glass flakes. The component B comprises a modified polyamide curing agent, a modified phenol formaldehyde amine hardener and an adhesion promoter. The coating is a solvent-free product, and has the advantages of environment friendliness, no toxicity and favorable constructability. The paint film has the advantages of favorable corrosion resistance, favorable seawater immersion resistance, favorable aging resistance and favorable cathodic disbonding resistance.

The invention relates to a marine concrete impacting and grinding test device and a test method thereof. The test device comprises a test container for accommodating simulated seawater and a test piece, a temperature control device for controlling a test environment temperature in the test container, a stirring device for driving a water flow and simulating wave washing, and a communication tube for being connected with the test container and the temperature control device. The test piece is arranged in the test container. When the test device is in use, the test container is filled with an artificial sea water solution. An impacting and grinding medium is paved on the upper surface of the test piece; and stirring impellers of the stirring device are arranged in the test container. The test device having a simple structure is operated conveniently. The development and study of the anti-impacting anti-grinding performance evaluation method of the cement-based material and the novel material of the marine concrete under effects of multiple coupling factors in an actual marine environment, especially in a splash zone can be simulated and promoted. The test device and the test method have characteristics of wide application range, real marine environment simulation, energy conservation, and environment protection and the like.

The invention relates to a researching device and a researching method of a corrosion electrochemistry behavior in a splashing zone. The device includes a first guide rail support, a second guide rail support, an X-Y axial moving bench, a displacement sensor, an insulating cylinder, a high-precision digital-display meter, a multi-channel data recorder, a platinum wire probe, a working electrode, a T-shaped electrode carrying bench, a bottom bench and a container. With the multi-channel data recorder, a displacement change and abrupt voltages during contact of the platinum wire probe to a liquid film and the working electrode are recorded at the same time, thereby ensuring authenticity, accuracy and reliability of data. By means of change of a relative position of the working electrode to a liquid level, a thickness of a thin-layer liquid film can be adjusted so that the thickness of the thin-layer liquid film can be adjusted continuously, thereby providing a convenient and effective method for researching a corrosion behavior under the thin-layer liquid film during a researching process of the corrosion electrochemistry behavior in the splashing zone. The method and the device are simple in operation and high in precision.

The disclosure relates to a device and method for a dry-wet cycle simulation test of concrete in a tidal zone and a splash zone. A main structure includes a liquid storage tank, a test chamber, a communicating pipe, air holes of the liquid storage tank, air holes of the test chamber, ceiling fans, steel pipes, a support frame, an upper water level sensor, a lower water level sensor, a temperature and humidity sensor, a temperature sensor, a chamber body support, a communication valve, a pipe support, a water inlet pump, a water inlet valve, a water outlet pipe, a water outlet pump, a water outlet valve, spray water pipes, spray heads, and a control box. The control box can control and record test parameters in real time, so that the boundary between the tidal zone and the splash zone is clear.

The invention provides a manufacture method of novel marine corrosion resistance stainless steel and a steel cable thereof. The marine corrosion resistance stainless steel comprises chemical compositions in the respective mixture ratio: less than 0.03 of C, less than 0.80 of Si, less than 0.50 of Mn, less than 0.03 of P, less than 0.01 of S, 22.0 to 25.0 of Cr, 13.0 to 15.0 of Ni, 3.0 to 5.0 of Mo, 2.0 to 4.0 of Cu, 0.10 to 0.20 of Nb, 0.30 to 0.45 of N, 0.03 to 0.06 of RE and the balance of Fe and unavoidable impurities. Steel wires required by the steel cable carry out electrolytic polishing processing before stranding. Compared with 316 stainless steel cables under the conditions of the same structure and the same cable diameter, the steel cable manufactured by the method of the invention has the advantages that the breaking force of the whole cable is improved by 3 to 4 KN, at the same time, the marine corrosion resistance annual corrosion speed rate in the environment such as marine atmosphere, splash zones, tidal zones, deep sea and the like is improved by more than ten times, and the maximum annual corrosion resistance depth is reduced by more than 5 times.

The invention relates to a cathodic disbanding resistant anti-corrosion epoxy coating and a making method thereof; bisphenol A epoxy resin, novolac epoxy and petroleum resin are added into a xylene and n-butanol mixed solvent, then wet sericite powder, barite powder, titanium dioxide, carbon black, fumed silica, an active diluent, a silane coupling agent, silicone oil and fluorocarbon modified polyacrylate are added for mixing, stirring and grinding to prepare an A component of the cathodic disbanding resistant anti-corrosion epoxy coating, cashew nut shell oil modified phenolic amine and modified aliphatic amine are mixed to prepare a B component, when in use, the A component and the B component are mixed; the cathodic disbanding resistant anti-corrosion epoxy coating has good compatibility with an electrochemical protection system, has excellent cathodic disbanding resistant performance and good adhesion, flexibility, sea water resistance and chemical resistance, and can be used for corrosion protection of splash zones and full immersion zones of ships, offshore platforms and marine steel structures and the like.

The invention relates to a three-point bending test device for simulating the corrosion fatigue of a splash zone of an ocean. The three-point bending test device comprises a three-point bending test block, a main box for fixing the three-point bending test block, an auxiliary box for keeping the test water level, a seawater spraying pipeline for simulating wave splashing, and a seawater circulating power device for providing power for seawater flowing. The three-point bending test device can not only guarantee that cracks are in impurity-free circulating seawater but also prevent seepage, is easy to operate, and integrates the functions of environmental protection, automation and intelligentization.

The invention discloses a rock-fill concrete construction method used for a wave wall foundation platform. The rock-fill concrete construction method used for the wave wall foundation platform comprises the following steps of laying a grout stop layer on the upper surface of a dike body; respectively constructing a formwork at the two sides of the grout stop layer; embedding drain pipes between the two formworks and laying rock-fill; pre-embedding wave wall steel reinforcements between the two formworks; casting and filling the rock-fill by self-compacting concrete, and forming the rock-fill concrete. The construction method provided by the invention has the advantages of high construction efficiency, simple construction technology and easy quality guarantee, and can be well applied to the construction of the wave wall foundation platforms on the sea located at a splash zone and a water level fluctuation zone.

The invention discloses a coating material for construction in the existence of water and rust and a preparation method of the coating material. The coating material comprises a component A and a component B which are in the weight ratio of (7-10):1, wherein the component A comprises the raw materials in percentage by weight: 50-60 percent of epoxy resin with ultra-low molecular weight, 5-10 percent of organic silicon resin, 5-10 percent of water-based phosphate chelate, 5-10 percent of barium sulfate, 5-10 percent of talcum powder, 5-10 percent of silicon carbide, 1-1.5 percent of silicone resin and 0.1-0.5 percent of organic silicon defoaming agent. The coating material has the characteristics of convenience and rapidness in construction, long service life, and can be coated on a steel structure in the sea in the existence of water, rust and dirt, realizes long-lasting anti-corrosion effect and thick coating, and effectively overcomes the technical difficulty in anti-corrosion operation of the steel structure under a severe environment of a splash zone. Furthermore, the invention also provides the preparation method of the coating material.

The invention discloses on-line detection equipment for corrosion of a splash zone of an offshore wind power single pile foundation. A wind driven generator erected on the sea includes a tower foundation extending from the seabed to the sea surface, and the vertical cylindrical tower foundation penetrates through a sea mud zone, a continuous immersion zone, a tidal zone and a splash zone of the sea in sequence from bottom to top until entering and exiting an atmospheric zone. The detection equipment comprises an annular platform installed on the periphery of the tower foundation of the splashzone in a sleeving mode, and the annular platform is installed on the tower foundation through a lifting device. The annular platform is provided with a plurality of waterproof-treated cameras, and lenses of the cameras are oriented towards the tower foundation in the splash zone to perform image shooting on the outer wall surface of the tower foundation in the splash zone during the up-down movement of the annular platform driven by the lifting device. Through the above arrangement, the annular platform is driven by the lifting device to perform corresponding lifting and lowering displacementin a wave zone, so that the purpose that the cameras arranged on the annular platform comprehensively photograph the tower foundation in the wave area to accurately obtain the corrosion detection information of the tower foundation in the wave area is achieved.

The invention discloses a preparation method of a graphene-based steel anticorrosive coating, and relates to a preparation method of the graphene-based anticorrosive coating with excellent isolation and blocking effects on an erosion medium. The preparation method effectively solves the problem of poor corrosion resistance of a built steel structure anticorrosive coating in a high-salinity seawater environment. According to the method, the surface of steel is subjected to oil removal, rust removal and polishing treatment, then a epoxy resin coating is applied on the surface of the polished steel by using underwater curing epoxy resin, by adopting a silane coupling agent, a silane coupling agent aqueous graphene composite layer and an oily graphene layer transition process, the anticorrosive coating with excellent corrosion resistance which can be applied in a tidal zone, a splash zone and a high-humidity environment is obtained, and the single-channel graphene-based steel anticorrosivecoating can have the effects of improving self-corrosion potential by 100 mV, and reducing the corrosion current density by 1 order of magnitude. The method is applicable to the field of civil engineering.

The invention discloses a device for corrosion prevention of a steel structure splash zone with cathode protection. The device is characterized by comprising a water-absorbing material layer coating the surface of the steel structure splash zone, wherein the water-absorbing material layer is fixed through hoops, and the hoops adopt hollowed-out structures. In order to solve problems that the steel structure splash zone is low in seawater immersion rate and effective corrosion prevention cannot be performed on the steel structure splash zone with common cathode protection technologies, a conductive coating technology which is relatively simple, convenient and lower in cost is provided, and the conductive coating technology is applicable to corrosion prevention of newly-built offshore steel structure splash zones with cathode protection as well as renewal and repair of existing facilities with cathode protection after corrosion.