26 results about "Splash zone" patented technology

The invention discloses a corrosion-resistant offshore wind power FRP-steel composite tower tube structure multi-objective optimization design method. The method comprises the following steps that a composite tower tube structure in an outer layer GFRP-steel tube-inner layer GFRP composite section form is adopted below the sea level and in a splash zone; mapping the coupling load time history to a parameterized finite element model of the composite tower tube structure; constructing a multi-objective optimization function by taking the minimization of the total manufacturing cost of the composite tower drum structure, the minimization of the total mass of the composite tower drum structure and the maximization of the total volume proportion of the GFRP material of the composite tower drum structure as objectives; and establishing a constraint evaluation system, carrying out iterative optimization on the multi-objective function by adopting a fast non-dominated sorting genetic algorithm with an elitist retention strategy, outputting a Pareto optimal solution set, and selecting a final implementation scheme. The problems that a traditional pure steel tower drum is large in corrosion loss and the design is difficult to balance multiple performance targets in the severe ocean environment can be solved.

The present application relates to the technical field of material performance testing, and discloses a material corrosion testing device and testing method for simulating ocean acidification environment, comprising: a closed simulation testing cabin, which is internally divided into a top-down salt mist simulation cabin, a wet heat simulation cabin and a high-pressure immersion simulation cabin by horizontally arranging openable and closable upper and lower insulation boards, and is provided with a cabin door with a sealing structure at the top; through the independent modular design of the salt mist simulation cabin, the wet heat simulation cabin and the high-pressure immersion simulation cabin, and the automatic switching function of the rotatable lifting sample holder, the present device realizes precise coupling and seamless switching of corrosion environments such as salt mist spraying, high temperature and high humidity, and deep sea high pressure, and the sample can complete the whole cycle corrosion behavior research of the marine atmospheric zone, the splash zone, the tidal zone and the full immersion zone on the same platform, and eliminates the interface effect caused by the traditional multiple equipment series connection testing.

A valve box applied to valve group protection in an ocean splash zone comprises a valve box body, a box cover, a transition plate and a seal of the transition plate which are matched with one another. A box cover inclined strut and a box cover buffering and sealing structure are arranged between the valve box body and the box cover. The transition plate is connected with the valve block and the valve box main body so as to reduce the specification of the valve box and adapt to different valve block specifications, and meanwhile, the rubber sheet is used for sealing; the inner wall of the valve box is provided with plates in the form of crossed holes so as to facilitate cable routing on the inner wall of the valve box; the cable penetrates through the wall to ensure waterproof sealing through an electrical wall-penetrating joint; the structure is reliable in sealing, convenient to operate and suitable for protection of different valve bank styles.

This invention relates to the field of stainless steel materials technology, specifically to a nickel-chromium-molybdenum-containing marine splash zone-resistant and corrosion-inhibiting stainless steel material and its preparation process. The chemical composition of the stainless steel material, by mass percentage, includes: carbon ≤0.04%, silicon 0.5%-0.8%, manganese ≤0.8%, phosphorus ≤0.02%, sulfur ≤0.0015%, chromium 22%, nickel 10%-11%, molybdenum 3.0%-3.5%, copper 1.2%-1.5%, titanium 0.2%-0.25%, niobium 0.1%-0.15%, with the remainder being iron. This invention's stainless steel material, through scientific chemical composition design, constructs a stable basic corrosion-resistant system. Simultaneously, the introduction of specific elements exerts a synergistic effect, effectively enhancing the stability and density of the passivation film on the material surface. This significantly improves the material's resistance to pitting corrosion in marine splash zones, reduces the risk of chloride ion damage to the passivation film, effectively inhibits intergranular corrosion, greatly improves the material's corrosion resistance stability, and extends its service life in harsh marine environments.

The present application relates to a kind of water-repellent breathable carbon mineralization protective coating and its preparation method and application, by mass parts, including the following components: γ-dicalcium silicate powder: 3~6 parts;Carbonization template: 0.3~0.9 parts;Crystal form regulator: 0.8~1.8 parts;Surface hydrophobic modifier: 0.01~0.1 parts;Water-retention and pore control agent: 2~5 parts.The present application water-repellent breathable carbon mineralization protective coating is based on the carbonization reaction of γ-dicalcium silicate, induces aragonite crystal form growth by crystal form regulator, gives coating surface hydrophobicity by surface hydrophobic modifier, improves pore and water retention by water-retention and pore control agent, can realize the function of water (liquid) blocking not gas (vapor) blocking, give consideration to water-repellent and breathability, effectively avoid the problem that coating is bubbled and falls off due to internal steam pressure is too large, especially suitable for coastal splash zone and tidal zone concrete protection.

The invention provides a compensation rope winding and unwinding method for a marine heavy-load folding-arm crane, which comprises the following steps of: deploying and recovering a load through an offshore crane, and connecting the load with a winch hook of the offshore crane when deploying the load; hoisting the load to the sea level by using a winch speed mode; when a sea level splash zone is reached, the winch speed mode is switched into a winch splash zone mode; the load continues to descend, and the winch splash zone mode is switched into a winch AHC mode; when the load is recovered, a winch AHC mode is used, and the lifting hook is connected with the load; the winch AHC mode is switched to the winch AT mode, and the load is hoisted away from the seabed; a winch AT mode is switched to a winch AHC mode, and the load is lifted to a sea level splash zone; the winch AHC mode is switched to the winch splash zone mode, and the load is hoisted away from the sea level splash zone; the winch splash zone mode is switched to the winch speed mode, the load is lifted to the needed height, and the lifting effect is good.

The application discloses a kind of corrosion-resistant offshore wind power FRP-steel composite tower drum structure multi-objective optimization design method, comprising the following steps: below sea level and splash zone are adopted with outer layer GFRP-steel pipe-inner layer GFRP composite cross-section form composite tower drum structure;Coupling load time history is mapped to the parameterized finite element model of composite tower drum structure;With the total manufacturing cost minimization of composite tower drum structure, the total mass minimization of composite tower drum structure, the total volume proportion maximization of GFRP material of composite tower drum structure is as target, and multi-objective optimization function is constructed;Establish constraint evaluation system, and the fast non-dominated sorting genetic algorithm with elite reservation strategy is used to iteratively optimize multi-objective function, and output pareto optimal solution set and select final implementation scheme.The application can solve the problem that traditional pure steel tower drum is greatly corroded and difficult to balance multiple performance targets in harsh marine environment.

The invention discloses a sacrificial anode device of a steel structure and a preparation method thereof, the sacrificial anode device comprises a fixing device, a plurality of sacrificial anodes and a filler, the fixing device is arranged on the outer side of the steel structure, the plurality of sacrificial anodes are arranged between the fixing device and the steel structure, and the filler is suitable for filling the peripheral sides of the plurality of sacrificial anodes. The sacrificial anodes are connected to the steel structure through wires, and the sacrificial anodes are formed by wrapping active metal in long-acting activation mortar. According to the method, the problem that traditional coating protection, underwater sacrificial anode protection and impressed current cathode protection cannot fully protect the steel structure in a tidal range zone and a splash zone can be effectively solved.

The present invention provides a hot-rolled strip steel for building structure, including a base layer, a corrosion-resistant layer, and an interfacial transition layer between the base layer and the corrosion-resistant layer. The hot-rolled strip steel for building structure of the present invention has a yield strength of ≥ 390 MPa, a tensile strength of ≥ 515 MPa, a yield-to-tensile ratio of ≤ 0.75, an impact energy at -40 °C of ≥ 190 J, a corrosion rate resistant to sea wave splash of ≤ 0.006 mm / year, an interfacial transition layer thickness of ≤ 8 µm, and an interfacial shear strength of ≥ 260 MPa, which exhibits an excellent overall performance. The present invention also provides a method for manufacturing the above hot-rolled strip steel.

This invention provides a nozzle arrangement method for secondary cooling of continuously cast billets, comprising: dividing the secondary cooling area of ​​the continuously cast billet into a spray zone for spraying and covering the billet body, an air-cooling zone to avoid spraying and cooling the corners of the billet, and a splashing zone located between the spray zone and the air-cooling zone; arranging nozzles at corresponding positions in the secondary cooling area according to the positions and areas of the spray zone, splashing zone, and air-cooling zone, so that the spray range of the nozzles covers the spray zone, and simultaneously forms the splashing zone and the air-cooling zone. This invention solves the problem in the prior art where adjusting the secondary cooling process alone cannot solve the problem of corner cracks under existing nozzle arrangements.

The utility model relates to a kind of offshore wind power suction pile foundation submarine cable protection pipe;Including suction pile body, suction pile connecting section, guide pipe support main leg, diagonal brace, transition section, main steel pipe, upper section submarine cable pipe, lower section submarine cable pipe, horn mouth, sealing plate, submarine cable pipe support, water filling hole, exhaust pipe, exhaust pipe support etc.。By setting upper and lower section submarine cable protection pipe in guide pipe support main leg inside, make full use of main leg internal space, avoid mutual conflict with additional current protection system and other accessory components;And upper section submarine cable protection pipe is set in main leg inside, can increase submarine cable pipe bending radius, be favorable to submarine cable threading.Carry out upper section submarine cable pipe to below splash zone and close upper guide pipe support main leg, effectively avoid the corrosion problem of splash zone main guide pipe inner wall.Simultaneously compared with full-length submarine cable pipe has the advantage of steel saving, project cost bottom.In addition, the upper horn mouth of lower section submarine cable pipe is extended to the form of guide pipe support main leg inside, which is convenient for cable traction rope threading.

The invention provides a construction method of an anti-corrosion coating of a foundation steel pile of an offshore wind power pile, which adopts a flexible composite sheet formed by an adhesive layer, a fiber reinforced layer and a fluorocarbon resin protective layer through a gradient hot-pressing composite process, and simplifies a plurality of traditional complex on-site coating processes into a standardized installation process. The construction efficiency and the quality controllability are remarkably improved, the offshore operation period is shortened, super-strong marine environment corrosion resistance, impact resistance and lasting bonding performance are achieved by means of the innovative composite structure of the coating material, and therefore the construction efficiency of the offshore wind power steel pile, especially a splash zone and a water change zone, is greatly improved, and the service life of the offshore wind power steel pile is prolonged. An efficient, reliable and ultra-long-life anti-corrosion protection solution is provided, the structural safety is effectively guaranteed, and the full-life-cycle maintenance cost is reduced.

The utility model relates to the technical field of wind power generation, in particular to a splash zone single pile anti-corrosion structure which comprises a single pile body, an anti-corrosion device is arranged on a splash zone of the single pile body, and the anti-corrosion device comprises an impressed current anti-corrosion device and a composite coating anti-corrosion device. The impressed current anti-corrosion device comprises a platform arranged on the upper portion of a single pile body, a constant potential rectifier placed on the platform, a current sensor and an auxiliary anode arranged on a splash zone, a reference electrode arranged at the bottom of the single pile body, and the constant potential rectifier, the current sensor and the auxiliary anode are connected in series through a cable. The composite coating anti-corrosion device comprises a composite anti-corrosion paste layer arranged outside the splash zone of the single pile body, an anti-corrosion buffer strip layer arranged outside the composite anti-corrosion paste layer, a waterproof ring layer arranged outside the anti-corrosion buffer strip layer, and a winding adhesive tape layer arranged outside the waterproof ring layer.

The invention provides construction equipment for repairing damage of a coating of a steel pipe pile in a splash zone and a maintenance method of the construction equipment, the construction equipment comprises three cabins with fan-shaped arc empty shell structures, a track and a top cover, and the three cabins are respectively a water tank cabin, a comprehensive operation cabin and a water quality detection cabin. Water obtained after a to-be-repaired structure is cleaned can be taken out through the water tank cabin, the ion removal condition can be effectively represented through the water quality detection cabin, in addition, surface treatment-spraying-maintenance integrated work can be achieved through the comprehensive operation cabin, the overall working efficiency is improved, the service life of a repairing coating is prolonged, and the overall operation life of the structure is prolonged.

The invention discloses an environment simulation accelerated corrosion test method for a spray splash zone, which comprises the following steps: sorting material attributes, environmental factors and corrosion state data corresponding to a series, and respectively carrying out importance evaluation on the environmental factors influencing the corrosion rate and corrosion behavior of the splash zone; counting and analyzing an atmospheric environment value quantization interval and a change condition to form a splash zone atmospheric environment accumulation spectrogram; carrying out statistical analysis on a seawater environment value quantization interval and a change condition to form a splashing region seawater environment accumulation spectrogram; corresponding test environment parameter conditions and cycle combinations are determined through equivalent conversion in the effective corrosion action process of the atmosphere and seawater environment in the splash zone; carrying out a real sea splash zone coupon corrosion test; carrying out an indoor simulation accelerated corrosion test; and carrying out correlation analysis on the real sea test data and the indoor acceleration simulation test data of the splash zone. The acceleration multiplying power is determined through a real sea experiment result and an indoor simulation experiment result, and iterative optimization design is carried out on environment factor data.

A system for performing an operation on a partially submerged body (600) of a structure or vessel comprises: a primary vehicle (100) configured to traverse the body (600) above a splash zone, the primary vehicle (100) using magnetic or vacuum attachment (120a, 120b) to secure itself to the body; and a secondary vehicle (200) configured to move within or below the splash zone, the second vehicle (200) being tethered to the primary vehicle (100), and the secondary vehicle (200) comprising at least one tool (230) for performing the operation on the body (600).

A spray developing hood and spraying method for circulating and purifying a two-fluid process environment are disclosed. The hood includes a stacked top cover, a sealing gasket, and a top cover. The top cover consists of a conical guide hood and a truncated cylindrical confluence section, forming a liquid splash zone. A splash buffer zone is formed between the top cover and the conical hood to buffer and capture rising mist. The truncated cylindrical confluence section utilizes the potential energy difference generated by the continuous change in sidewall height to force the intercepted liquid to flow directionally towards the lowest sidewall section for discharge, and forms a transport avoidance port below the highest sidewall section. This application uses a double-layer spatial structure to stage and intercept high-kinetic-energy atomized fluid. Combined with the gravity guiding characteristics of the truncated section, it effectively prevents developer splashing and escaping from the outside and accumulating on the inner wall, eliminating the risk of droplets falling during film removal. This significantly improves process cleanliness and yield while reducing equipment height.

The invention relates to the technical field of berthing component construction, and discloses a splash zone berthing component dynamic self-adaptive mounting support system which comprises a longitudinal beam assembly, a foundation steel hoop assembly fixed to a high-pile wharf pile foundation, a fixing assembly mounted on a berthing component and a central control unit mounted on a wharf operation platform. According to the dynamic self-adaptive mounting bracket system for the ship berthing component in the splash zone and the construction method, the hydraulic buffer assembly, the angle sensor assembly and the central control unit are arranged, and wave impact energy is absorbed by utilizing the dynamic damping characteristic of the hydraulic buffer assembly; meanwhile, the central control unit adjusts the damping force in a closed loop mode according to real-time monitoring data of the sensor assembly, and the technical problem that due to the fact that a traditional rigid supporting system cannot adapt actively under wave disturbance, the precision of the installation position of a berthing component is low is solved; high-precision installation that the final installation deviation of the component is stably controlled at the millimeter level under the dynamic sea condition is achieved.

The application provides a bidirectional water-stopping hydraulic centralized control gate and a hydraulic control system, the gate comprising a gate plate, an eccentric flange, a hydraulic cylinder and a connecting piece; the gate plate is hingedly connected to the top of the eccentric flange in a rotatable manner through the connecting piece; the two ends of the hydraulic cylinder are connected to the gate plate and the inner side of the base through connecting pieces respectively; the gate plate is driven to move under the action of the hydraulic cylinder, thereby realizing the opening and closing of the gate; wherein the top of the eccentric flange is provided with a bidirectional sealing piece; the bidirectional water-stopping hydraulic centralized control gate and the hydraulic control system can adapt to harsh environments in splash zones, have the characteristics of high corrosion resistance, high bearing alternating impact resistance, zero leakage sealing, precise automatic control and long-term stable operation.

This application relates to the technical field of water conservancy and hydropower engineering, and in particular to a prefabricated splash zone protection sleeve and installation method for offshore wind power steel monopile foundations. This protective sleeve includes a prefabricated composite shell, a grouting layer, and fasteners. The prefabricated composite shell, which surrounds the outside of the steel monopile, is a segmented prefabricated component, with a UHPC outer layer and an ECC inner layer arranged radially from the outside to the inside. The grouting layer, formed by curing high-performance grout, has a continuous annular structure and fills the annular cavity between the ECC inner layer and the steel monopile. Fasteners are used to achieve a mechanical connection between the prefabricated composite shell and the steel monopile. The prefabricated composite shell has fastening holes, grouting holes, and venting holes. The segments of the shell are spliced ​​together by fasteners to form a closed protective sleeve. This protective sleeve can achieve a synergistic effect of outer layer impermeability, wear resistance, and impact resistance, and inner layer crack control and coordinated deformation, reducing the frequency of high-risk offshore maintenance.

The present application relates to the technical field of corrosion monitoring, and particularly relates to a marine wind power tower corrosion monitoring system based on multidimensional data, which comprises an acquisition module, a determination module, an identification module, a determination module, a warning module and an adjustment module. The present application takes the fast available image features such as rust layer coverage and color gradient as the first layer trigger signal according to the particularity of the dry-wet alternation and multi-mechanism coupling corrosion of the splash zone of the marine wind power tower, and activates the subsequent composite corrosion identification only when the corrosion is significant. At the same time, the composite corrosion index is constructed by the spatial aggregation degree and type distribution of the corrosion points, the local corrosion behavior is mapped to the risk quantization index of the tower drum level and the whole field level, and the preset threshold is closed-loop adjusted by using the historical warning accuracy and the corrosion event timing density, so that the problem of low corrosion detection accuracy caused by the dependence on fixed threshold and the inability to adapt to dynamic marine environment is effectively solved.

The utility model belongs to the technical field of ocean engineering, and provides an ocean engineering high-strength corrosion-resisting steel pile which comprises a pair of rigid embracing plates, a pair of flexible embracing plates and a hoop ring, the pair of rigid embracing plates embraces a spray splashing area of a pile body in an edge-to-edge mode, combination columns are arranged on the outer sides of the plate edges of the rigid embracing plates in a protruding mode in the radial direction, and the flexible embracing plates are arranged on the combination columns. Every two adjacent combination columns are horizontally opposite, the inner side of the rigid holding plate is covered with a rubber pad, the edge of the rubber pad extends in the radial direction to form an ear pad, and the ear pad is located between every two adjacent combination columns; the opposite sides of the pair of flexible embracing plates are mutually pressed and covered so as to surround the outer portions of the two rigid embracing plates, the overlapping positions of the two flexible embracing plates are connected into a whole through jackscrews, and the heads of the jackscrews sequentially penetrate through the overlapping positions of the two flexible embracing plates and the middles of the rigid embracing plates and then abut against the rubber pads. According to the utility model, the spray splashing area of the steel pile can be effectively protected, the corrosion resistance of the steel pile is greatly enhanced, the service life of the steel pile is greatly prolonged, and the maintenance frequency is reduced.

The invention discloses a sacrificial anode device of a reinforced concrete structure and a preparation method of the sacrificial anode device, reinforced concrete comprises a concrete outer layer and reinforcing steel bars wrapped by the concrete outer layer, the sacrificial anode device comprises an outer layer structure, a plurality of sacrificial anodes and a filling material, and the outer layer structure is arranged on the outer side of the concrete outer layer; the sacrificial anodes are arranged on the concrete outer layer and located on the outer sides of the steel bars, the sacrificial anodes are connected with the steel bars through wires, the filling materials are suitable for being filled on the peripheral sides of the sacrificial anodes, the sacrificial anodes are made by wrapping active metal with conductive mortar, and the active metal is electrically connected with the steel bars. According to the scheme, the problem that traditional coating protection, underwater sacrificial anode protection and impressed current cathode protection insufficiently protect the steel bars in a tidal range zone and a splash zone can be effectively solved.

A computer-implemented method includes: activating a control unit coupled to a chamber in which a lab environment is being created to include at least one splash zone as seen by an offshore oil and gas platform, wherein a lab environment accommodates a mock structure that resembles a construction characteristics of the offshore oil and gas platform; generating, in the lab environment, the at least one splash zone that immerse, at least in part, the mock structure so that varied levels of immersion are created in the splash zone; generating, in the at least one splash zone, waves that impact the mock structure, wherein the generated waves mimic actual waves that impact the offshore oil and gas platform; monitoring, using a set of electrical resistance (ER) probes, a spatial pattern of surface polarization inside the splash zone; and comparing the spatial pattern of surface polarization with a benchmark.

The invention relates to the technical field of material performance testing, and discloses a material corrosion testing device and a material corrosion testing method for simulating a marine acidification environment. The interior of the simulation cabin is divided into a salt mist simulation cabin, a damp and hot simulation cabin and a high-pressure soaking simulation cabin from top to bottom through an upper isolation plate and a lower isolation plate which are horizontally arranged and can be opened and closed, and a switch cabin door with a sealing structure is arranged at the top; according to the device, through the independent modular design of the salt mist simulation cabin, the damp and hot simulation cabin and the high-pressure soaking simulation cabin, and in combination with the automatic switching function of the rotatable lifting sample rack, accurate coupling and seamless switching of corrosion environments such as salt mist spraying, high temperature and high humidity, deep sea high pressure and the like are realized; the test sample can be used for completing full-period corrosion behavior research of a marine atmospheric zone, a splash zone, a tidal range zone and a total immersion zone on the same platform, and an interface effect caused by a traditional multi-device series connection test is eliminated.