149 results about "Tidal range" patented technology

The invention relates to a test method for lossless monitoring and detection for the material accelerated corrosion under a simulated marine environment, which comprises a corrosion accelerating test under the simulated marine environment and a test for the lossless monitoring and detection for the corrosion potential of material, wherein the corrosion accelerating test under the simulated marine environment is performed on a corrosion accelerating module, which can be used for finishing the tests for the marine or industrial atmospheric corrosion, splashed spoondrift corrosion, tidal range corrosion, full-soaking corrosion and sea mud microbiological corrosion. The test for the lossless monitoring and detection for the corrosion potential of material is finished by using a corrosion potential lossless monitoring and detection module. The method provided by the invention has the advantages that an environment for simulating each corrosion area in the ocean is supplied, the test period is shortened by performing the corrosion accelerating test, and the corrosion degree of the material is monitored and detected in the whole process. The method is used for supplying a technical support for evaluating the corrosion resistance of the material under the marine environment, thereby shortening the period of researching and testing the material.

The invention relates to an in-situ monitoring method for rusting and a stress state of a reinforcing steel bar in concrete. The method comprises the following steps of establishing an automatic prestress balance system, applying initial prestress to a reinforcing steel bar sheet which is made of a same material with that of the reinforcing steel bar in the concrete, and embedding the reinforcing steel bar sheet into a concrete structure; arranging continuous strain measuring points on different heights of the reinforcing steel bar sheet, and monitoring the stress state of the area in which the strain measuring points are arranged; and forming a plane stress state on the reinforcing steel bar sheet, generating stress concentration after the reinforcing steel bar sheet is locally corroded, and reflecting the initial rusting time, rusting rate and rusting degree of the reinforcing steel bar according to the strain variation of the continuous measuring points on the different heights of the cross section. The reinforcing steel bar sheet can be embedded in different depths from the surface of the concrete, and the monitoring and rusting risk evaluation on the rusting degree of the reinforcing steel bar and the stress state of the embedded area in the different depths can be realized. The method is not subjected to the influence of ambient factors such as different ions, temperature and humidity in the concrete and is particularly suitable for evaluating the rusting risk and the rusting degree of the reinforcing steel bar in the reinforced concrete structure in a wave erosion environment wave splashing area and a tidal range zone.

The invention discloses an automatic spiral elevating active ice-resisting device, comprising a fixed support which is arranged around and fixed with the outside of a leg of a protected object, a hydraulic self-elevating system fixed with the fixed support, a cylinder-type movable support which is fixed with a plunger of the hydraulic self-elevating system and is arranged around the outside of the leg of the protected object, and an ice-resisting cone which is arranged around and connected with the outside of the cylinder-type movable support. The ice-resisting cone is a combined body of a positive cone and an inverted cone; the inner surface of the combined of the positive cone and the inverted cone is in threaded connection with the outer surface of the cylinder-type part of the cylinder-type movable support; a propeller is arranged on the lower end face of the combined of the positive cone and the inverted cone. The device can automatically adapt to tidal range changes, can realize the functions of breaking ice actively, operating fully automatically, reducing the threat to a platform from the accumulation and climbing phenomena of ice sheets, is especially suitable for the sea areas under serious ice conditions, and can effectively protect ocean engineering structures in iced sea areas.

An apparatus for pumping and compressing fluids using floats which ride on the tides, swells and waves of the sea lowering an impeller by gravity when the tide falls and discharging fluid through back flow prevention valves above impeller when sea level rises for any reason. Pump will deliver sea water at any selected pressure determined by buoyancy of floats. Increasing buoyancy increases discharge pressure or lift or volume. Sea water pump is open to sea on inlet side when pumping sea water. Sea water seeks its own level rising to sea surface through impeller and back flow prevention valve. When pumping other fluids, pump is not open to sea and connects to fluid sources of supply. The pump is modified to prevent leakage to sea when pumping all other fluids. Fluid volume lift is increased by adding tidal range multipliers to pump and increasing float buoyancy making it possible to deliver greater volumes of fluids each time tide rises.

The invention discloses a river mouth salt tide forecasting method based on tides and runoff. The method specifically comprises the following steps of A00, parameter selection, B00, parameter quantization, C00, estimation of salinity and a tidal range statistic model, D00, initial estimation of the salinity and a runoff volume statistic model, E00, initial estimation of a salinity statistic model, F00, correction of the salinity statistic model, G00, obtainment of a salinity forecasting model. According to the river mouth salt tide forecasting method based on tides and runoff, the salt tide upstream forecasting model based on chlorosity and the relation of the runoff and the tidal range is established, forecasting can be achieved 1-7 days ahead of schedule, and middle or short term salt tide forecasting is achieved; the forecasting model only has one main unknown runoff parameter, the complex problem of salt tide forecasting is simplified, and the method has the outstanding advantages of being simple, convenient and practical.

The invention relates to an automatic lifting, active anti-ice vibration; damping device, comprising upper layer, middle layer and lower layer of annular wing plates, lining boards which are erected between different layers of wing plates and play a supporting role, a hole is established on the middle layer of wing plate; a plurality of anti-ice cables are distributed between the three layers of wing plates, the anti-ice cables pass through the middle layer of wing plate, and are fixed on the upper layer and the lower layer of wing plates; the upper layer of wing plate is connected with the lifting device; a buoy is arranged under the lower layer of wing plate. The automatic lifting, active anti-ice vibration; damping device has the advantages of automatic lifting by adapting the tidal range, eliminating the effect of ice-induced vibration, effectively protecting the ocean engineering structures in winter ice zone.

The invention provides a sinking and floating seaweed cultivating device. The device comprises a cultivating net screen and a floating rope or an edge rope. The device is characterized in that the device also comprises a desiccation device; the desiccation device comprises a column; an upper floater, a lower floater and a sinker are respectively arranged on the column from top to bottom; the sinker is connected with the lower end of the column via a rope; the floating rope or edge rope is connected on the upper part or the upper floater of the column; and the cultivating net screen is connected on the floating rope or edge rope via the rope. The device has more reasonable structure, is convenient to use, is hardly limited by water depth and is suitable for wider offshore areas, especially the deepwater gulfs away from wind. The device adopts the natural tidal range for desiccation, is beneficial to mechanical harvesting and has good capability of resisting wind and waves. Popularization and application of the device give a great push to the development of the coastal seaweed cultivation industry in China.

The invention discloses a method for automatically cleaning a seawater fence breeding netting underwater. A set of device is additionally arranged on the outer side of a fence breeding netting; for the device, according to the difference of seawater depths in a breeding sea, two or more rows of strip floater net scrapers are vertically pulled to form a distance according to a tidal range and are mutually parallel; the strip floater net scrapers are sequentially and vertically connected through hanging ropes; and the lower part of each hanging rope is connected with a seabed sinker. The fence netting is segmented into a plurality of zones by transverse stay cords; and the vertical distance of each zone is equal to an average tidal range of a sea area where the netting is positioned, and steel reinforcing sinkers are assembled below two transverse stay cords at the lowest part of the netting. Round holes are formed in strip battens of the strip floater net scrapers; and guiding ropes are fixedly arranged at the upper end of the netting, penetrate through the round holes on the strip battens and are sequentially connected with the transverse stay cords on the netting. The device can realize automatic cleaning of the fence netting underwater, depending on the tiding and heaving of sea waves. The method disclosed by the invention has the beneficial effects that the cleaning cost of the seawater fence breeding netting is reduced, avoidance of labor force, energy consumption and pollution, and zero discharge.

The invention relates to an underwater geotextile fabric laying method and belongs to a coastal engineering building construction technology. The underwater geotextile fabric laying method the following steps of: surveying geological geomorphology and hydrometeorology conditions; planning to determine a laying position; carrying out GPS (Global Positioning System) positioning, intelligent control, basal plane obstacle clearing, error correction, splicing and shipping of underwater geotextile fabrics, sand bag in-place placement and drum put-down; fixing an anchor position; carrying out moving spreading, bag pressing and riprapping; and dumping broken stones. By one set of laying operation method, a construction process flow and a safety quality guarantee system, the difficult problem of laying the underwater geotextile fabrics is well solved, floating drifting of the geotextile fabrics is effectively prevented and the geotextile fabrics are smoothly laid without being wrinkled. Stable construction and all-weather normal operation can be ensured in the environment with a water depth of 2 to 20m, a flow rate of 0 to 3m/s, a tidal range of less than or equal to 9m, a wind force of less than or equal to 7 grades and wave power of less than or equal to 2 grades. Moreover, the underwater geotextile fabric laying method has the characteristics of accuracy for positioning, small error, high quality, low cost and high efficiency.

The invention relates to a determination method of maximal transverse flow of an entrance channel of an encircling-type breakwater. A relation between the transverse flow and tidal range of the channel is discussed by stimulating and calculating the maximal transverse flow of the entrance channel of the encircling-type breakwater under different tidal types through adopting a two-dimensional tide mathematical model, and an empirical calculation formula of the transverse flow of the entrance channel is put forward. The maximal transverse flows of the entrance channel under corresponding cumulative frequencies can be obtained by substituting forecasted tidal ranges under different cumulative frequencies into the formula to be calculated by virtue of the empirical formula according to one-to-one linear relation between the transverse flows and the forecasted tidal ranges of the entrance channel, and the distribution of the cumulative frequencies of the transverse flow can be further obtained; and the maximal forecasted tidal range in a concerned period is obtained according to a tidal table, and the maximal transverse flow of the entrance channel in the period can be obtained by estimating so as to guide design of channel scale and daily management of entering and leaving of ships in a harbor district.

The invention relates to a tidal river reach fishway inlet design method and a fishway inlet. The method comprises the steps of: typical tide process selection; tide level calculation; fishway inlet section hydraulic characteristic calculation; fishway inlet arrangement and water level design; and fishway inlet parameter determination. The method builds a flux and reflux model of a tidal river reach by tide current principles and tidal river reach hydraulic characteristics, calculates various types of tidal ranges and the tide level change conditions through the model, calculates and determines optimal fishway inlet positions of various tide levels to adapt to the flows, the flowing directions and the water level changes of different tide currents through the fishway inlet section hydraulic characteristics, improves the fishway fish passing efficiency, reduces the influence on fish stop by the hydraulic engineering construction, and achieves important significance on protection or repair of the river ecological environment.

The invention discloses a vibration decreasing-isolating ice-resisting device with automatic adaptation to tidal range changes, comprising a fixed support which is arranged around and fixed with the outside of a leg of a protected object, a hydraulic self-elevating system fixed with the fixed support, a cylinder-type movable support which is fixed with a plunger of the hydraulic self-elevating system and is arranged around the outside of the leg of the protected object, and an ice-resisting cone which is arranged around and connected with the outside of the cylinder-type movable support. A plurality of horizontal spring vibration isolators are connected between the inner surface of the ice-resisting cone and the outer surface of the cylinder-type part of the cylinder-type movable support; a plurality of vertical spring vibration isolators are connected between the lower part of the ice-resisting cone and the upper surface of a base part of the cylinder-type movable support. The device does not need to be operated manually, automatically adjusts the position of the ice-resisting cone along with tidal range changes, can keep the stability of the ice-resisting cone when ice sheets act on the ice-resisting cone, is especially suitable for the sea areas with large tidal range change range and high change speed, and reduces the adverse effect of ice-induced vibration phenomena on a platform to the utmost extent.

The invention discloses an estuary-tidal-range fast prediction method. The estuary-tidal-range fast prediction method includes the steps that 1, real-time tidal level data and average water depth data at starting points of estuaries are collected; 2, the collected data is combined, relation curves between the cross sections of riverbeds and the along-journey distance of the estuaries are fitted, and an estuary-tidal-range prediction model is constructed; 3, the collected real-time tidal level data and the collected average water depth data are substituted into the estuary-tidal-range prediction model to compute and obtain the tidal-range predictive values of all the along-journey cross sections of the estuaries. The estuary-tidal-range fast prediction method is low in computation complexity, high in computational efficiency and prediction accuracy and easy to operate, and can be widely applied to water conservancy industries, and estuary-tidal prediction can be carried out in real time.

The invention belongs to the field of waterway transportation science and technology, and relates to a new method for reducing silt of a large and medium tidal range river mouth bar sand section channel. A beach reservoir is built nearby the channel, and the dyke of the reservoir is provided with a water taking gate and a water draining gate; and by using the power of natural tidal range, the water with low sand content on the outer marine surface layer is filled into the reservoir through the water taking gate at a high tide level, and then the water is injected into the channel at a low tide level, so that the method plays an effective role in silt reduction of the channel. The method comprises the following steps of: (1) filling the water with low sand content on the outer marine surface layer into the reservoir through the water taking gate at the high tide level; (2) closing the water taking gate; (3) injecting the water into the channel which needs silt reduction through the water draining gate at the low tide lever; (4) closing the water draining gate when the water injection is finished; and (5) circulating the 1st step after the 4th step is finished till the channel which needs silt reduction achieves silt reduction. According to the method, the sand in the channel is taken away through clean water to effectively reduce the silt of the channel; and effective silt reduction of the channel is realized by adjusting the flow of the water in the channel.

The invention discloses a coating anti-corrosion process for the wave splash and tidal range area of ​​the multi-tubular pile steel structure foundation of offshore wind power. Anti-corrosion coating construction method, which solves the complex structure of multi-pipe piles, and the construction process of PTC coating technology that is difficult to construct in the Y-shaped and K-shaped structures of intersecting lines, enabling "smearing petrolatum paste, winding petrolatum tape, and making glass fiber reinforced plastic shells" The PTC cladding construction is applied to the multi-tubular pile steel foundation.

The invention relates to a single-pole attachment fabricated mooring structure for an offshore wind turbine foundation and a construction method. The single-pole attachment fabricated mooring structure is characterized by comprising a concrete bearing platform and a plurality of steel pipe piles of which the upper ends are obliquely inserted into the concrete bearing platform; the upper portion of the side wall of the concrete bearing platform is provided with a steel platform and a vertical steel ladder of which the upper portion is arranged in the steel platform in a penetrating mode; the concrete bearing platform and the side edges of the steel pipe piles are provided with a vertical berthing member; the berthing member comprises a plurality of horizontally-arranged mooring steel columns and a plurality of vertically-arranged berthing steel pipes, and the multiple horizontally-arranged mooring steel columns and the multiple vertically-arranged berthing steel pipes are connected with one another; the upper portion of the bearing member and connection steel pipes on the side surface of the concrete bearing platform are connected through flanges; and all subsections of the steel ladder are connected through flange bolts. According to the single-pole attachment fabricated mooring structure for the offshore wind turbine foundation and the construction method, safe and convenient ship mooring and operation and maintenance work in a wide-tidal-range sea area with heavy storm waves can be achieved, the mooring structure can be replaced and maintained conveniently, the adaptability of wind turbine foundation mooring to the severe sea condition is improved, the structural strength and stability of a wind turbine foundation mooring system are improved, and the mooring structure and the construction method have wide application prospects in ocean engineering.

The invention relates to a tidal range level signal measuring device and a combined oscillating buoy type wave power generating device with the same. The tidal range level signal measuring device comprises a level floating ball switch mounted on a closed flange connected to a regulating rod, a floating ball of the level floating ball switch is mounted in a tubular sealed chamber, the bottom of the sealed chamber is provided with a tubular member communicated with the sealed chamber in a connected manner, the tubular member can sleeve the sealed chamber, the other end of the tubular member is provided with a water penetrating segment, the end of the water penetrating segment is connected to a water penetrating plate, and the water penetrating is provided with a plurality of water penetrating holes. The tidal range level signal measuring device has the advantages that tidal range level signal measurement can be implemented accurately, since the device is controlled through electric signals, the signals are collected stably and are free of influences of the scales of waves, the signal collecting accuracy can be in the range of +/- 3mm, signal processing is simple, system logic judgment is easy, and instruction sending is accurate.

The invention relates to a novel double-turbine tidal current energy generating device capable of self adapting tidal range. The novel double-turbine tidal current energy generating device comprises an upright post, wherein a sleeve matched with the upright post is slidably connected to the upright post, and a crane is arranged at the top of the upright post; a generator is fixedly connected withthe upper part of the sleeve, generator rotating shafts are symmetrically arranged on both sides of the generator, and generator gears are arranged at the ends of the generator rotating shafts; an upper floating body, a turbine supporting mechanism and a lower floating body are sequentially arranged on the sleeve from top to bottom, turbine rotating shafts are symmetrically arranged on the two sides of the turbine supporting mechanism, an assembling port matched with the sleeve is formed in the turbine supporting mechanism, and the turbine supporting mechanism is fixedly connected with the sleeve through the assembling port; turbines are fixedly connected with the ends of the turbine rotating shafts, and the turbines are in transmission connection with the generator gears through belts; anair inlet in communication with an annular tube is formed in the upper side portion, near one end of the upper floating body, of the annular tube, and the air inlet is in communication with the lowerfloating body through a vent pipe; and a water outlet in communication with the lower floating body is further formed in the bottom end of the lower floating body. The novel double-turbine tidal current energy generating device has the advantages that the novel double-turbine tidal current energy generating device is simple, reliable and easy to maintain, can realize the high-efficiency operationof the tidal current generator, and can realize the self-adaptive tidal range change of the power generation device.

The invention provides an automatic ebb drying device for laver culture, a culture device and a method. The automatic ebb drying device for laver culture comprises a hollow lifting rod and a floating rod. One end of the hollow lifting rod is vertically and fixedly connected to the middle portion of the floating rod and the other end of the hollow lifting rod is provided with a plurality of tail wings used for stabilizing the hollow lifting rod in the circumferential direction of the rod body uniformly. The hollow lifting rod is sleeved with a large floater between the tail wings and the floating rod. Stay ropes are arranged between the large floater and the two ends of the floating rod. An ebb drying root cable used for lifting the floating rod together with the large floater penetrates through the inside of the hollow lifting rod along the axis of the rod body. With the automatic ebb drying device, automatic ebb drying and water falling of curtain nets can be realized, the ebb drying workload is reduced and the quality of lavers is improved; the tail wings and the stay ropes can improve the balance of the lifting rod. Contraction and release ropes are arranged, so that the ebb drying can be performed manually; ebb drying root cables and culture net field root cables are arranged, so that the wind and wave resistance of the whole culture device is improved; automatic ebb drying of laver culture net fields is realized by fully utilizing natural tides, so that the culture cost is reduced; mechanical harvesting is realized and the culture device can be used for deep sea culture and open sea culture.

The invention discloses an ocean platform cathode protection simulation experiment device and method. The ocean platform cathode protection simulation experiment device comprises a water circulation unit, a sensor unit and a data processing unit. The water circulation unit comprises a water reservoir, a circulating pump, a wave generator, an adjusting tank, a temperature controlling element and astirrer, wherein the circulating pump and the adjusting tank are connected between a water outlet and a water inlet of the water reservoir in series through a circulating pipeline, and the wave generator and the stirrer are disposed in the water reservoir. The sensor unit comprises an ocean platform scaling model, scaling anode body models and annular reference electrodes, wherein the ocean platform scaling model is disposed in the water reservoir, and the plurality of annular reference electrodes and scaling anode body models are fixed to the ocean platform scaling model in sequence from topto bottom and are connected with the data processing unit through conducting wires. The ocean platform cathode protection simulation experiment device and method have the advantages that by adopting the mode of simulated accelerated experiments of the experiment device, the ocean platform cathode protection simulation experiment device and method can be used for simulating the influence, on the platform cathode protection effect, of environmental factors such as ocean tidal range, ocean current, waves and ocean temperature, the result is close to the actual working conditions, and the purposeof evaluating the feasibility of a platform cathode protection scheme is achieved.

The invention discloses a bridge pier fence netting of a cross-sea bridge. The bridge pier fence netting comprises two symmetrical steel cables arranged outside a bridge pier facing tides, at least five supporting bars are connected between the two symmetrical steel cables, a protective net is arranged in the two symmetrical steel cables, floating ropes are arranged on the two sides of the protective net and are fixedly connected with the at least five supporting bars, each floating rope is provided with at least five colored floaters, each steel cable is connected with at least five pile cables, and the pile cables are connected with undersea fixing piles. Therefore, frontal sea waves, tidal ranges and sundries along with the tides can be blocked by the bridge pier fence netting, impactive abrasion of the sea waves and the sundries in water on bridge piers is reduced, and the bridge piers of the cross-sea bridge are protected.