90 results about "Trapezia" patented technology

The method is used for calculating ocean mesoscale vortex Lagrange average vorticity deviation based on sea surface two-dimensional flow field data. The acceleration method for the calculation processis studied, the GPU is used for accelerating the particle integration process and carrying out trapezoidal integration along the time axis in the acceleration process, and the method is novel in content and clear in target and has reference significance for global high-spatial-resolution long-time-span vector field calculation. Meanwhile, the problems that time consumed for solving an ordinary differential equation and extracting isolines is too long, and the memory occupancy rate is too large are solved, and good robustness and objectivity are achieved.

The invention relates to a dimension measurement method of central diameters of two symmetrical beveled pockets of a cage. A measured cage is similar to an isosceles trapezoid, the pockets are arranged at the width part of a beveled end; the inclined angle between the bevels at the upper end of the pockets and the upper end surface of the isosceles trapezoid is alpha; the minimal tolerance and the maximal tolerance between the dimensions of the central diameters of the two symmetric pockets are H1 and H2 respectively; through repeated measurement, the average value of the maximal external diameter is D, the average value of the internal diameter of a small end is d, the average value of the bevel end width is B, and then the minimal detection tolerance H01 and the maximal detection tolerance H02 of the central diameters of the two symmetric pockets of the measured cage are calculated according to the formulas that H01 is equal to D minus B*Cos alpha and H02 is equal to d plus B*Cos alpha, and H01 and H1 as well as H02 and H2 are compared, whether the to-be-measured cage meets the design requirement can be intuitively judged, and the measurement method is simple and feasible, the operation is convenient, and the measurement accuracy is high.

The invention provides an offshore oil-gas subsea pipeline protection device. The device comprises a trapezoidal long frame, bionic waterweeds, a U-shaped pile, rolling assemblies and a cathode protection assembly, the top of the trapezoidal long frame is fixedly connected with the U-shaped pile through a second transverse frame, a pillow plate is arranged in the trapezoidal long frame, a set of guide rails are installed on the pillow plate, and an arch-shaped plate is fixedly connected to the guide rails. The bionic waterweeds are installed on a seabed, first transverse frames are installed at the two sides of the U-shaped pile, and the first transverse frames are fixedly connected with the two side edges of the arch-shaped plate through damping pieces. Pipelines are fixedly connected with each other through a flexible pipe, a pair of rolling assemblies are arranged in the flexible pipe, each rolling assembly comprises a ball and a sleeve, the sleeves are rotatably connected with theflexible pipe through the balls and pipe inner cavities, and the cathode protection assembly is fixed in the pipelines through a mounting plate. The device is suitable for protecting the offshore oil-gas subsea pipelines, scouring of water flow to the pipelines can be effectively reduced, eddy current oscillation is reduced, and chemical corrosion and the heat effect in the pipelines can be resisted.

The invention relates to a pollutant collecting-and-discharging system for pond internal-circulation aquaculture. The pollutant collecting-and-discharging system comprises a big-end-up trapezoidal pollutant collecting groove (11) formed in the portion, close to the back portion of a breeding area (4), in the bottom of a pollutant collecting area (5), a turbidity monitor (13) is arranged at the portion, close to an outlet side of the pollutant collecting area (5), of the pollutant collecting groove (11), and the height of the water outlet side of the pollutant collecting area (5) is coincidentwith the height of the bottom face of the breeding area (4); a punching pollutant discharging pipe (7) is arranged at the bottom of the pollutant collecting groove (11), one end of the punching pollutant discharging pipe (7) is closed, and the other end of the punching pollutant discharging pipe (7) is connected into a pollutant discharging pipe (8); pollutants in a breeding water body are precipitated in the pollutant collecting groove (11) and discharged through the punching pollutant discharging pipe (7) and the pollutant discharging pipe (8). Construction is easy, movable equipment is notarranged, the sedimentation effect of fish manure and residual feed can be enhanced, residence time of the fish manure in the breeding water body is shortened, real-time monitoring is carried out through the turbidity monitor (13), collecting and discharging efficiency of the pollutant are improved, cleaning of the breeding water body is guaranteed, and the management difficulty and the working amount of equipment maintenance are effectively reduced.

The invention relates to a suspended matter collecting device for aquaculture, which comprises a trapezoidal box, a filter box is arranged in the trapezoidal box, the side wall of the filter box extends outwards to form a fixed edge, a plurality of positioning bolts used in cooperation with the trapezoidal box are arranged on the fixed edge, and a filter screen piece is arranged in the filter box;a water pumping mechanism is arranged at the bottom of the trapezoidal box, a reset mechanism used in cooperation with the water pumping mechanism is arranged in the filtering box, a moving plate isfixedly connected to the side wall of the trapezoidal box, a lifting mechanism used in cooperation with the trapezoidal box is arranged on the moving plate, and an isolation net is fixedly connected to the moving plate. The mode that the filter screen piece is matched with the isolation net is adopted, the isolation net can prevent large floaters and cultured fishes from being sucked in, a first filter net and a second filter net are filter nets of different mesh numbers, suspended solids of different sizes can be filtered step by step, and therefore the different suspended solids can be efficiently filtered.

The invention discloses a device for cascaded culture of fishes and shrimps by separately using river water according to quality. The device comprises a culture pond, an up-flow water distribution pipe is arranged in the middle of the culture pond, a trapezoidal fish pond is built around the up-flow water distribution pipe, a trapezoidal shrimp pond is built outside the trapezoidal fish pond, the up-flow water distribution pipe is connected with a river channel through a water supply pipe network, a biological river water pretreatment tank with a jet aeration device is mounted along the bank of the river channel according to the trend of the river channel, an efficient biological bed and a water inlet with a water suction pump machine are formed in the pretreatment tank, an overflow weir is arranged in the pretreatment tank to form a water collecting sump, and the water collecting sump is connected with the water supply pipe network. The device is simple and low in cost, by a culture method of the device, culture water is supplied for fish and shrimp varieties with different requirements for water quality by separately using the river water according to the quality, and the water is purified by the pretreatment tank and the efficient biological bed so that water bodies can be recycled.

The invention discloses a bionic marine antifouling skin and a preparation method thereof, and belongs to the technical field of bionic materials. The bionic marine antifouling skin is composed of a bottom layer, a porous microstructure layer, microcapsules, coral-imitating tentacles and coral-imitating mucus; the bottom layer is formed by compounding silicone rubber and polyurethane, and the thickness of the bottom layer is 1-5 mm; the porous structure layer is made of a silicon rubber material, and the thickness of the porous structure layer is 1-5mm; the aperture of the porous structure is 1-100mu m, and the porous structure layer also comprises 1-3wt% of microcapsules, wherein the microcapsules wrap silicone oil or edible oil; the surface of the porous structure layer is also provided with coral-imitating tentacles, the coral-imitating tentacles are made of silicon rubber, the tentacles are trapezoidal cylinders or circular truncated cones, the height h of the tentacles is 5-15mm, the distance a of circle centers of the tentacles ranges from 1 mm to 5 mm, and the ratio m: n of the diameter of the tail ends of the tentacles to the diameter of the bottoms of the tentacles ranges from 0.5 to 0.8; and the coral-imitating mucus is silicone oil or edible oil and is coated on the surface of the porous structure layer. The material has the characteristics of strong adsorption and antifouling property, and by adding the microcapsule, the stability of SLIPS is improved.

The invention provides an artificial fish reef capable of promoting water mixing, and relates to the field of ocean engineering and ocean ranch construction. The artificial fish reef capable of promoting water mixing comprises a central core body which is arranged to be a hollow cube, twelve trapezoidal inclined plates and overflow holes, wherein channels are formed in six faces of the central core body, and the six channels form three-dimensional multi-pass structures which communicate with one another; the twelve trapezoidal inclined plates are arranged on the outer side of the central core body, the narrower upper top edges of the twelve trapezoidal inclined plates are connected with the twelve edges of the central core body, and every three adjacent trapezoidal inclined plates are connected through respective inclined edges; and the overflow holes are formed in the trapezoidal inclined plates and used for overflowing. According to the artificial fish reef capable of promoting the water mixing, the water mixing effect is effectively promoted, a better flow field effect and a better flow field mixing effect are provided, the effect of a water flow field can be utilized, and external energy supply is not needed.

The invention relates to the technical field of partition wall battens, and discloses a light partition wall batten mounting structure and a preparation method thereof. The light partition wall batten mounting structure comprises a first batten and a second batten, side grooves are formed in the two sides of the first batten and the two sides of the second batten correspondingly, slope grooves with the cross sections being isosceles trapezoids are formed in the inward sides of the side grooves, clamping grooves are formed in the inward sides of the slope grooves, and fixing pins are movably arranged on the inner walls of the side grooves, the slope grooves and the clamping grooves. When the first batten and the second batten are connected, the fixing pins are embedded in the side grooves, the slope grooves and the clamping grooves in the opposite sides of the first batten and the second batten, slope plates and clamping plates on the two sides of the fixing pins are embedded in the slope grooves and the clamping grooves of the first batten and the second batten correspondingly and connected through connecting columns, and under blocking of the side grooves, the slope plates and the clamping plates cannot be transversely separated from the first batten and the second batten, connection is very convenient, and the installation efficiency is greatly improved.

The invention discloses a hole-weir combined type ecological fishway transition section and a design method thereof. The transition section is a trapezoidal side slope open channel with decreasing water depth, increasing top width and decreasing bottom width, and multi-level submerged weirs are disposed along the transition section; the top width of the submerged weirs gradually increases from upstream to downstream, and the bottom width of the submerged weirs gradually decreases from upstream to downstream; the height of the submerged weirs decreases stepwise from upstream to downstream of the transition section; and fish pass holes are disposed on the bottom of the submerged weirs. The transition section utilizes the characteristic of different overflowing of an overflow weir and an orifice, the hole-weir combined type ecological fishway transition section is innovatively designed, and the purpose of enabling water to flow from the upper part, enabling fishes to swim from the lower part, controlling the flow rate, and maintaining ecological characteristics of a fishway is achieved.

The invention discloses a rice and shrimp breeding separation efficient comprehensive planting and breeding method, which comprises the following steps: S1, field engineering standardization transformation: selecting a field with sufficient water source, excellent water quality and convenient irrigation and drainage to carry out rice and shrimp comprehensive planting and breeding, the area of a single field is preferably 20-60 mu, the field is rectangular, and the length-width ratio is 2: 1; the water inlet system is an open channel, the depth is 50cm, the bottom width is 30-40cm, and the section of the cement slope protection is trapezoidal; s2, green cultivation of rice: raising seedlings from late May to early June, and transplanting in mid-to-late June; base fertilizer is mainly applied, and 100-150 kg/mu decomposed manure and 15-20 kg/mu compound fertilizer are used as the base fertilizer; s3, accurately and efficiently culturing the crayfishes: promoting the crayfishes to mate in advance, lay eggs, incubate and grow juvenile crayfishes through a method at least comprising the steps of erecting a sunshade net for cooling, drying a field or pond to fortify parent crayfishes to live in holes, returning water and planting grass, and increasing nutrition; according to the method, the purpose of continuously producing large-size crayfish is achieved by adopting a breeding mode of rice and crayfish breeding separation and stubble rotation field cleaning, the market competitiveness of the crayfish is high, and the economic benefit is improved.

The invention discloses a bionic fish propelling device which comprises a bottom plate, the bottom plate is provided with a flow guide plate and a supporting column, the top of the supporting column is provided with a concave guide rail block, the concave guide rail block is provided with a sliding groove, a concave clamping rod is installed in the sliding groove of the concave guide rail block in a sliding mode through a sliding block, and the concave clamping rod is provided with a fish-tail-imitating elastic plate. The tail portions of the two fish-tail-imitating elastic plates are connected, the tail portions of the two fish-tail-imitating elastic plates are connected with tail fin-imitating trapezoidal elastic plates, a first V-shaped elastic supporting plate and a second V-shaped elastic supporting plate are arranged between the two fish-tail-imitating elastic plates, two driving devices are installed on the bottom plate, and push rods of the two driving devices are hinged to the corresponding concave clamping rods. According to the bionic fish propelling device, passive staggered propelling deformation of the crossed fishtail-imitating elastic plates is utilized, the similar fishtail swimming posture is achieved, and the excellent hydrodynamic characteristic can be shown; multi-frequency propulsion and stepless steering can be achieved through driving of the double water-imitating servo motors.

The invention discloses a mixing device for breeding. The mixing device comprises a first mixing shell, feeding cavities are fixedly connected to the left side and the right side of the upper end of the first mixing shell, baffles are fixedly connected to inner cavities of the feeding cavities, rotating rollers are movably connected to the inner cavities of the first mixing shell, and trapezoidal grooves are formed in the outer sides of the rotating rollers; a material mixing groove is formed in the middle of each rotating roller, the lower end of the first material mixing shell is connected with a second material mixing shell through a connecting column, a feeding cavity is formed in the middle of the connecting column, a speed reducing mechanism is fixedly connected to the interior of the feeding cavity, and the speed reducing mechanism comprises a speed reducing plate, a partition plate, a speed reducing cavity, a feeding port, a discharging hole, a speed reducing impeller and a speed reducing shaft. According to the mixing device for breeding, through the arrangement of the structure of the speed reducing plate, falling materials are fully mixed; and through the arrangement of the structure of the speed reducing shaft and the speed reducing impeller, the materials are mixed more fully.

The invention discloses a multi-purpose overground artificial reservoir which comprises a reservoir body and a bearing body, wherein an impermeable layer is paved at the bottom of the reservoir body, and the periphery of the reservoir body is trapezoidal; the bearing body is located in the reservoir body, a reinforcing layer is paved on the bearing body, and a house is built on the reinforcing layer; two water inlets and a water outlet are formed in the reservoir body, the first water inlet is connected with a well water supply pipe, the second water inlet is connected with a domestic sewage pipe of the house, and the water outlet is connected with an agricultural water supply pipe; seedlings of aquatic animals and plants are input into the reservoir body with water for culture and proliferation in the fishery industry. The multi-purpose overground reservoir disclosed by the invention integrates irrigation, cultivation, flood-fighting and housing providing and not only can satisfy the irrigation requirements but also cultivates to increase the economic benefit. The house is built on the reservoir to avoid immigration of residents caused by construction of the reservoir, so that not only is the shortage of houses alleviated, but also invasion of flood can be further effectively avoided.

The invention discloses a simulated ecological breeding water tank for fishes laying demersal eggs or floating eggs. The breeding water tank comprises water tank bottom plates, wherein the water tank bottom plates are trapezoidal and are horizontally placed, the upper surfaces of the water tank bottom plates are downwards inclined from the water inlet end to the water outlet end, the front sides and the rear sides of the upper surfaces of the water tank bottom plates are both provided with water tank side plates in a vertical state, the two ends of each water tank side plate are flush with the end faces of the adjacent water tank bottom plates, a plurality of flow generation cross beams are arranged on the upper surfaces of the water tank bottom plates at intervals, the two ends of each flow generation cross beam are connected with the inner surfaces of the corresponding water tank side plates, and a plurality of flow generation round protrusions arranged at equal intervals are arranged on the upper surfaces of the water tank bottom plates on the two sides of each flow generation cross beam. According to the breeding water tank, in the using process, the device can be used for spawning and breeding of fishes laying demersal eggs or floating eggs in the device, the problems that the surfaces of the fishes laying demersal eggs are injured, and the breeding effect is affected due to the fact that fish eggs are deposited at the bottom of the breeding water tank can be solved, and application and popularization are facilitated.

The invention discloses a water surface floating object fishing device based on an unmanned ship. The water surface floating object fishing device comprises a ship body, wherein a storage battery is arranged in the ship body; a driver is fixedly installed at the lower end of the ship body; a first air cylinder is fixedly installed on the inner side of the left end of the ship body; a first air cylinder rod is arranged at the right end of the first air cylinder; the first air cylinder rod is slidably connected in the ship body in a sleeved mode; a steel ball is fixedly connected to the left endof the first air cylinder rod; a box body is slidably connected to the outer side of the steel ball in a sleeving mode; a rolling groove is formed in the right end of the box body; the steel ball isslidably connected in the rolling groove in a sleeved mode; a connecting rod is fixedly connected to the left end of the ship body; a trapezoidal block is hinged to the left end of the connecting rod;a dovetail groove is formed in the right end of the box body; the trapezoidal block is slidably connected in the dovetail groove; and a box cover is hinged to the upper end of the box body. The watersurface floating object fishing device based on the unmanned ship has the characteristics that the fishing efficiency is higher, and the device can contain more fished objects.