14 results about "Water column" patented technology

The invention relates to the technical field of ocean new energy technology utilization, and discloses an oscillating water column type wave energy power generation system with an energy gathering structure at the bottom, which comprises a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow velocity sensor, a control host and a bottom energy gathering assembly, the bottom energy-gathering assembly is installed at the lower end of the air chamber and provided with a transmission mechanism, reflection and diversion of seawater at the bottom of the air chamber are achieved through the arranged horizontal bottom plate and the two symmetrically-arranged energy-gathering plates, energy gathering beyond the width of the air chamber is completed, and opening and closing of the energy-gathering plates are synchronously controlled through the transmission mechanism. And the amount of seawater flowing into the air chamber from the water inlet is changed. According to the wave energy power generation system, the oscillation intensity of the water column in the air chamber can be adjusted according to changes of sea surface waves, the speed of the generated air flow can be matched with the optimal working frequency of the turbine power generation system, the power generation efficiency of the device is guaranteed, and the oscillation water column type wave energy power generation device can be protected and prevented from being impacted by sea waves.

The invention relates to the technical field of trestle construction platforms, in particular to an offshore lamplight trestle construction platform which comprises a supporting column, a bridge floor is detachably installed at the upper end of the supporting column, limiting seats are fixedly connected to the upper end and the lower end of the supporting column, the outer surface of the supporting column is sleeved with a movable barrel, the outer surface of the supporting column is further sleeved with a balance weight ring, and the balance weight ring is located below the movable barrel. The outer surface of the movable cylinder is sleeved with an auxiliary ring, the outer surface of the auxiliary ring is rotationally provided with a plurality of extension rods, the outer surfaces of the extension rods are sleeved with floating belts, the floating belts can float above the sea level, the movable cylinder automatically ascends and descends along with the sea level under the buoyancy action of the floating belts, and the communication cylinder is kept in isobaric communication with an external water body. The water column pressure formed in the rising process of sea waves and tides can automatically drive the turbofan in the driving barrel to rotate, so that continuous mechanical energy output can be achieved without additional power, and then the cleaning ring is driven to circularly clean the outer surface of the supporting column.

A sonar target enhancement system and method are provided for consumer fish finder live sonar image processing. The system and method identify and enhance the visualization of specific targets, such as fish and lures, detected by such live sonar imaging systems. A sonar image enhancement pipeline utilizes a target enhancement kernel sized in accordance with the subject targets to provide enhancement thereof without also enhancing other sonar return data. The output of the enhancement pipeline is combined with the sonar data from the normal image filtering pipeline to produce a sonar image for display on the consumer fish finder that greatly increases the visibility of the targets without affecting the non-target sonar returns for, e.g., the bottom and structure in the water column.

The invention relates to the technical field of ocean engineering and renewable energy sources, and discloses a back wave water inlet type oscillating water column structure based on long wave reduction and energy extraction, which comprises a wave absorption main body, a support, a pile foundation and a turbine generator set with an air turbine, and further comprises an arc-shaped moving door, the two arc-shaped moving doors are connected into an interlayer of the wave absorbing body in a sliding mode, and a back water inlet matched with the two arc-shaped moving doors is formed in one side of the wave absorbing body. Water level modulation caused by the phase difference between the liquid level fluctuation of the cavity and the liquid level fluctuation outside the cavity is formed to reduce waves. According to the technical scheme, wave response optimization under different wave periods can be achieved by synchronously adjusting the size of the water inlet, the energy extraction efficiency is improved, the wave transmissivity is reduced, and the device is suitable for various layout forms of offshore and open sea areas and has the good wave adaptability and the integration characteristic of wave reduction and energy extraction.

The invention discloses a marine environment monitoring system based on inertial navigation, and the system comprises an inertial navigation system which is used for collecting three-dimensional attitude angle and three-dimensional linear acceleration data; the Doppler log is used for collecting moving speed data of the carrier relative to the seabed; the satellite navigation receiver is used for collecting a geographic position and a UTC time signal; and the temperature-salinity-depth instrument is used for collecting temperature, salinity and pressure data of seawater. And the acoustic Doppler flow velocity profiler is used for collecting relative velocity and direction data of water flows at different depths in a water column below the carrier. The inherent accumulated position drift error of the inertial navigation system is corrected in real time by comparing and fusing the real-time position, speed and attitude angle of the carrier provided by the inertial navigation system with the ground speed of the carrier provided by the Doppler log. And the existing residual position error is reset to zero by using the absolute geographic position, so that the problem of precision maintenance during long-endurance and long-distance operation of the carrier is thoroughly solved.

This application relates to the field of wave energy simulation technology and discloses a simulation method and system for dual-mode frequency tuning of oscillating water columns in a double-slit caisson. The method includes: establishing a two-degree-of-freedom dynamic equation system based on the displacements of the water columns in the front and rear cavities, using the slit transmission coefficient as a parameter to obtain the coupling stiffness; substituting the coupling stiffness into the eigenvalue equation to decompose the oscillation modes of the two cavities to obtain the mode transformation matrix and mode amplitude ratio; performing convolution integration on the mode amplitude ratio and the wave power spectrum of the target sea area to obtain the first-order mode weight and second-order mode weight; using a preset target first-order mode weight as the outer convergence target and a preset target natural frequency as the inner convergence constraint to perform a double-layer nested iterative solution on the slit transmission coefficient and the rear cavity volume to obtain the optimal slit width and the optimal rear cavity volume. This application solves the problem of unobservable and undesignable energy contribution ratios of each mode in existing technologies, leading to spectral mismatch.

This invention relates to the field of marine new energy technology utilization, and discloses an oscillating water column wave energy generation system with a bottom-mounted energy-concentrating structure. The system includes a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow velocity sensor, and a control unit. It also includes a bottom energy-concentrating component installed at the lower end of the air chamber and equipped with a transmission mechanism. A horizontal bottom plate and two symmetrically arranged energy-concentrating plates reflect and guide seawater at the bottom of the air chamber, concentrating energy beyond the width of the air chamber. The transmission mechanism synchronously controls the opening and closing of the energy-concentrating plates, changing the amount of seawater entering the air chamber at the inlet. This wave energy generation system can adjust the oscillation intensity of the water column in the air chamber according to changes in sea waves, ensuring that the generated airflow velocity matches the optimal operating frequency of the turbine power generation system, guaranteeing the power generation efficiency of the device. It also protects the oscillating water column wave energy generation device from wave impacts.

The present application relates to a kind of deep water unconsolidated sediment cap rock sealing capacity determination method, it is related to oil and gas field development technical field, comprising: obtaining the geological data of multiple sample wells in target area, the geological data includes the particle size of reservoir, cap rock at each sample well, mineral composition and the overburden water depth of cap rock;According to the particle size of reservoir, cap rock, mineral composition and overburden water depth, determine the particle size, mineral composition data of simulation reservoir, simulation cap rock in mud sand sealing simulation device and multiple overburden water column height;Carrying out cap rock breakthrough pressure test simulation experiment, obtains the experimental breakthrough pressure of simulation cap rock under each overburden water column height condition;According to experimental breakthrough pressure, calculate the actual breakthrough pressure of cap rock at each sample well;Based on the overburden water depth and actual breakthrough pressure of cap rock at each sample well, build the cap rock sealing capacity model of target area;According to cap rock sealing capacity model, determine the sealing capacity of cap rock at target point in target area.

This invention discloses a shallow water columnar sampler, specifically relating to the technical field of underwater sampling equipment. It includes a telescopic column with a ladder base fixedly connected to its bottom end. Two sets of dual-cylinder sampling components are connected to the top of the telescopic column via a fixing mechanism. This invention utilizes the telescopic nature of the telescopic rod and the lever principle formed by the two sets of dual-cylinder sampling components on the telescopic column to successfully achieve balanced force distribution on both ends of the hull during sampling. This significantly improves the stability of the hull and avoids the danger of the hull tilting to one side or even capsizing due to the small size of the hull and the weight of the sampling device. Furthermore, in shallow water areas, the telescopic rod can be detached from the fixing mechanism, rotated, and its length adjusted to directly place the top cavity above the water surface for sampling. Sampling is convenient even when the hull is no longer under stress, greatly improving the flexibility of the device. The structure is simple and efficient.

The invention discloses a service time improvement-oriented wave energy efficient in-situ energy supply ocean profile buoy system, which belongs to the field of ocean observation and comprises a main buoy subsystem, a floating drum subsystem and an anchoring subsystem. Wherein the main buoy subsystem is provided with an ocean profile element sensor, a communication system and the like, is used for observing an ocean profile, and is also provided with an oscillating water column wave energy conversion device for capturing long-period waves; the floating drum subsystem is provided with an oscillating water column wave energy conversion device used for capturing short-period waves, the oscillating water column wave energy conversion device is complementary with the wave energy capturing frequency band of the main buoy subsystem, and stable electric energy supply is provided for the buoy system. And the anchoring subsystem is used for anchoring the buoy system at a fixed position to guarantee fixed-point observation. According to the method, the conversion of the anchoring type ocean profile buoy from a battery dependent type to an in-situ energy supply type is promoted, the operation and maintenance cost of an ocean observation network can be remarkably reduced, and high-reliability technical support is provided for real-time monitoring of deep and far sea and early warning of extreme climate.

The present application belongs to the technical field of ocean renewable energy development and utilization, and discloses an integrated device of a floating structure-oscillating water column wave energy conversion device. A vertical column and a lateral support column form a lattice design, reducing wave load and ensuring structural stability. Energy concentrating plates are arranged on the side of the vertical column. The control system controls the movement of the energy concentrating plates to form reflected energy concentration after monitoring by the monitoring system, improving wave energy conversion efficiency. At the same time, the energy concentrating plates are lifted under extreme sea conditions to reduce wave load. A flow regulating system is arranged inside the air chamber of the oscillating water column wave energy conversion device to regulate the flow of air in the air chamber into the turbine generator, so that the power generation efficiency of the turbine generator reaches the maximum value, improving the conversion efficiency of the device. The present application has stable structure, high energy conversion efficiency, strong adaptability and high survival ability under extreme sea conditions, and can concentrate waves through the oscillating water column wave energy conversion device.

The application discloses a kind of based on oscillating water column gradient array deep sea farming platform and its array configuration method, belong to marine aquaculture engineering technical field.The platform includes buoyancy cabin, column, truss, net, oscillating water column device and oscillating float;Multiple oscillating water column devices are arranged outside truss and net, and the inherent frequency gradient array is formed by differentiating the effective volume of air chamber or the immersion depth of water column, and each device air passage is independent and is provided with a turbine power generation unit;Oscillating float is connected to the periphery of column, and the frequency response of oscillating water column array is complementary.Configuration method determines the structure parameters of each device according to the wave frequency distribution of target sea area and arranges gradient along the wave direction.The application widens wave energy capture band, improves array stability and energy utilization efficiency.

The present application relates to the technical fields of ocean engineering and renewable energy, and discloses a back wave water inlet type oscillating water column structure based on long wave reduction and energy extraction, comprising a wave reduction main body, a support, a pile foundation and a turbine generator set with an air turbine, further comprising an arc-shaped movable door, which is provided with two interlayers and is slidingly connected to the wave reduction main body, and a back water inlet opening is formed on one side of the wave reduction main body and matched with the two arc-shaped movable doors. By setting the back water inlet opening on the back wave side of the wave reduction main body, the wave reduction is achieved by the phase difference between the water level modulation caused by the cavity liquid surface fluctuation and the cavity external liquid surface fluctuation. The technical solution can optimize the wave response under different wave periods by synchronously adjusting the size of the water inlet opening, enhance the energy extraction efficiency and reduce the wave transmission rate, and is suitable for various layout forms in offshore and open sea areas, and has good wave adaptation ability and integrated characteristics of wave reduction and energy extraction.

The invention relates to the technical field of coast protection engineering and sea tide viewing, in particular to a seawall reinforcing structure and method for improving an eagre landscape. The reinforcing structure comprises a tooth wall bottom plate arranged on a seabed, a retaining wall is arranged on the side, opposite to a seawall, of the tooth wall bottom plate, the retaining wall is obliquely arranged, a tidal bore landscape platform is arranged on the top of the retaining wall, and a protective fence is arranged on the edge of the tidal bore landscape platform. A water column group is formed through the tidal bore, a natural dynamic water curtain is formed, the viewing angle is increased to 180 degrees, the seawall is protected, meanwhile, the landscape function is achieved, the tide viewing experience feeling is improved, the protective net and the protective fence are arranged, and the safety is improved.