38 results about "Wind drift" patented technology

The invention relates to a solar cell backboard packaging material and preparing method thereof. Components and weight quotient of the solar cell backboard packaging material are: PET resin of 40-60 quotient, polyamide of 20-40 quotient, polyvinyl fluoride of 15-25 quotient, titanium pigment of 0.5-2 quotient, anti-aging agent of 0.5-2 quotient, and EVA resin of 10-30 quotient. The preparing method includes steps: (1) mixing the PET resin, the polyamide, the polyvinyl fluoride, the titanium pigment and the anti-aging agent equally, drying, heating, extruding, and stretching to basal film; (2) coating the EVA resin on one side of the basal film and obtaining the solar cell backboard packaging material. Advantages of the prepared solar cell backboard packaging material are simple preparing technique and excellent capability. Solar panel packaged by the solar cell backboard packaging material is high and low temperature resistant, acid and base resistant, wind drift sand resistant, not delaminated, not chapped, and not aging for 25 years.

The invention discloses a ZigBee-based system for monitoring the wind drift of a power transmission line on line, which comprises a ZigBee wireless wind drift detector, a rod tower monitoring sub-machine, a general packet radio service (GPRS) communication module and a monitoring center, which are connected in turn, wherein the rod tower monitoring sub-machine and the GPRS communication module are connected with a power supply module respectively; and the rod tower monitoring sub-machine is connected with a wired wind drift detector. In a method using the system for monitoring, the actual wind drift condition of an insulator string of the power transmission line can be obtained accurately by acquiring the wind drift angles of the topmost and bottommost insulators of the insulator string of the power transmission line in real time or fixed time and by quantitative calculation and qualitative analysis, and thus, the most direct and efficient monitoring of the wind drift of the insulator string of the power transmission line is realized.

A digital rangefinder system indicates to a user a projectile trajectory to a target. The digital rangefinder system comprises a computing element, digital display, a memory, a range sensor, a tilt sensor in a housing. Embodiments include a digital camera, a high-resolution digital display, and GPS. Embodiments may comprise mobile smart phones with removable range sensors, handheld digital rangefinder devices, weapon mounted scopes, or simulation games. The system is capable of dynamically displaying an aiming point and adjusting for wind drift. The system may capture images and videos, create animations, and upload them to the Internet. The system may visually highlight obstacles or objects having a predetermined distance. A method aspect is calibrating the system to an individual bow having a bow sight.

The invention discloses a method for establishing a maritime distress target wind-drift model based on multi-source data. The method comprises the steps that S10, a maritime test range is designed, and a stereo observation network is established; S20, an unpowered floater is released in the range, and the drift velocity of the floater is calculated, wherein power factors of a sea area nearby the floater are continuously tracked and observed in a first time period of a test; S30, multi-source observation data is assimilated, a marine meteorology and power data reanalysis field with a high spatial-temporal resolution in a sea trial area is constructed in combination with a numerical simulation technology, and the wind-caused drift velocity of the maritime floater is decomposed; S40, on the basis of a wind-drift model fitting relation, displacement of the floater per unit time step is simulated, and a genetic algorithm is introduced to perform optimal solving on fitting wind-drift coefficients; and S50, a wind-caused drift forward vector diagram of the floater is drawn, and a relational model of motion characteristics of the maritime floater and maritime wind pressure is obtained. Through the method, continuous tracking and observation on an experiment target during sea trial are avoided, and test difficulty and cost are effectively lowered.

A monitoring system for turbulence of the atmospheric boundary layer under a wind drift sand flow or sand dust storm environment comprises: a meteorological tower (6), a hot-wire bracket (9) and a plurality of observation frames (10), which are vertically and cooperatively arranged in parallel. The hot-wire bracket (9) is arranged close to the meteorological tower (6), and the plurality of observation frames (10) are symmetrically distributed on the two sides of a region formed by the meteorological tower (6) and the hot-wire bracket (9). The meteorological tower (6) is cooperatively provided thereon with a first group of experimental instruments for measurements; the hot-wire bracket (9) is cooperatively provided thereon with a hot-wire probe assembly (8); and each observation frame (10) is cooperatively provided thereon with a second group of experimental instruments for measurements. The monitoring system for turbulence of the atmospheric boundary layer under a wind drift sand flow or sand dust storm environment can realize the advantages of measuring a wall turbulence 3D structure with a high Reynolds number, measuring the flow field characteristics of wind drift sand flow or sand dust storm, and synchronizing turbulence measurement with sand dust transport measurement.

The invention relates to a tying and placing method for a vertical sand barrier, which adopts a nonuniform structure, namely, the porosity or ventilation coefficients at the upper part and the lower part are different; the sand barrier is layered in the vertical direction; and the lower structure is compact, the middle structure is sparse, and the upper structure is ventilative. The high vertical structure tied and placed through adopting the method adapts to the vertical distribution of concentration of wind-drift sand, thereby not only effectively withholding the sand delivery of wind-drift sand, but also reducing the wind pressure on the sand barrier, reducing the breakage damage of wind power, meanwhile reducing the material consumption and sand-prevention cost; and the method provided by the invention can be applied in the mechanical sand-prevention engineering at all areas with sand storms.

The invention is relates to the wind ward and sand fix method in the desert area, wherein the wind ward method is to fill the plastic packaging pouch with sand in the desert area, and to place the sand pouches to a wind ward dam in the perpendicular of the wind direction, or to stack the sand to a perpendicular in the perpendicular of the wind direction, the surface of the sand hill is cover with a grass cushion or a plastic colorful cloth, the sand fix method is to cover the sand area or the sand hill surface with a grass cushion or a plastic colorful cloth, then to press with sand pouches and ropes. The invention is easy to operate with low cost, the sand hurricane damage could be effectively supposed.

The invention discloses a power transmission line bow-shaped wire sag measuring method, belonging to the measurement method technology field. The power transmission line bow-shaped wire sag measuring method comprises steps of measuring characteristics of angles and distances through a total station, determining part of the side length and the angle of two triangles, and performing calculation according to the triangle cosine law so as to obtain the maximum sag of the bow-shaped wire. The invention, on the one hand, reduces the measurement errors and improves the pertinency of the wind drift risk alteration. On the other hand, the invention does not need the worker to clime the pole and perform wire outgoing measurement, reduces the consumption of the labor and material resources, saves the cost, greatly reduces the safety risks, guarantees the safety of the working staff and greatly improves the safety benefit. The power transmission line bow-shaped wire sag measuring method is widely applicable to the power transmission line bow-shaped wire sag measurement.

The invention relates to the field of comprehensive wind-drift sand control and discloses a lap-joint slope wrapping wind prevention and sand fixation method. Control parameters of a sand accumulated road segment, including the dune moving direction, the dune size, the dune length, the size of an included angle between the dune and the route, the bury speed of wind-drift sand, and the frequency of wind, are measured and analyzed, and the sand accumulated road segment is subjected to lap-joint slope wrapping sand prevention treatment according to the control parameters. As the lap-joint slope wrapping sand prevention method is adopted, the durability of a sand prevention system is improved; and through scientific and reasonable selection of the position of a sand barrier, the utilization ratio of the sand barrier is improved, sand accumulation on roads is retarded, such adjunctive jobs as sand cleaning are reduced, and the desert road maintenance cost is lowered.

The invention relates to a measuring device and a measuring method for wind-drift sand of a blown sand drifting layer. The measuring device (1) provided by the invention is used for measuring the wind-drift sand of the blown sand drifting layer. The measuring device (1) comprises a plurality of collecting parts (3); collecting cavities are formed in all the collecting parts (3); inlets are arranged on all the collecting cavities; the inlets are located on the upper surfaces of the collecting parts (3); and the inlets are same in equivalent lengths and are different in areas. The invention also provides the method for measuring the wind-drift sand of the blown sand drifting layer. According to the method, the wind-drift sand of the blown sand drifting layer is obtained by utilizing a leastsquare fitting equation set.

The invention relates to a stacked type multi-layer wind prevention and sand resistance comprehensive structural body. The structural body is structurally characterized in that slice layer sand filtration and ventilation type grids are arranged between two butt joint stand columns, the lower portions of the stand columns are connected with bearings of slide wheels in a butt joint mode, sand prevention type rail grooves are formed by welding porous type sand leaking slide plates, sand discharge holes and square rails, the sand prevention type rail grooves are located on a tooth-shaped embedment mortise and tenon cellular base, the slice layer sand filtration and ventilation type grids are connected through stacked lock catches, and automatic telescopic regulating valves are located in the middles of stacked lock catch crossed supports. By means of the stacked type multi-layer wind prevention and sand resistance comprehensive structural body, a traditional two-dimensional fixed vertical sand prevention fence is improved into a fence of a push-pull stacked three-dimensional structure, a solid base is changed into a base of a cellular ventilation structure, it is avoided that airflow streams nearby the stand columns, and near-surface transited wind-drift sand can be effectively intercepted. By means of the telescopic regulating valves, the interval of the slice layer sand filtration and ventilation type grids and the relative positions of fence vent holes can be automatically regulated, the overall porosity degree of the comprehensive structural body can be improved, and railway sand storm protection measure benefits are maximized.

A field spraying device for spraying a liquid on a crop, includes a liquid supply tank, at least one spray boom extending from the device, the spray boom having a forward side facing the directional movement of the field spraying device in operation and an opposing rearward side, wherein the boom includes a liquid supply line connected to a plurality of nozzles along the length of the boom for spraying a field with the liquid. Further, there are a plurality of wind drift spoiler devices wherein each wind drift spoiler device is position adjacent each of the nozzles on the forward side of the spray boom. The wind drift spoiler devices include a downwardly depending deflector surface adjacent each of the nozzles. The wind drift spoiler device may also be equipped with a downwardly depending brush element, wherein the brush element is positioned to depend downwardly from the deflector surface.

The invention discloses a mooring-free automatic restoring deep and high sea fixed-point observation buoy and a method. The mooring-free automatic restoring deep and high sea fixed-point observation buoy comprises a buoy body and a power positioning system. An observation small platform is arranged at the top of the buoy body, a meteorological observation sensor can be mounted on the observation small platform, and the meteorological observation sensor and the buoy body are connected into a whole through a mast tube. The power positioning system is constituted by an anemorumbometer, an air pressure gauge, a positioning gauge, a plane solar cell panel, a flexible solar cell panel on the mast tube, an ocean current meter mounted on the lower portion of the buoy body, a propulsion motor, a propeller, a controller and software, wherein the anemorumbometer, the air pressure gauge, the positioning gauge and the plane solar cell panel are mounted on the observation small platform. The problemthat during deep sea buoy fixed-point observation, a long mooring system is needed for anchorage is solved, and fixed-point sea factor observation can also be achieved without anchorage through the mooring system; and the buoy can automatically stay at the point for long-time observation according to the set standing position and the allowable action radius, and once the buoy drifts out of the set action radius range under the effect of wind drift, the buoy automatically restores to the set standing position to observe continuously under the help of the power system of the buoy.

The invention discloses a noise source positioning method of a high-speed train module in an acoustic wind tunnel. The method comprises steps of carrying out rapid Fourier transformation on each matrix element in a cross spectrum formed by a microphone array; calculating a pointing vector of an array for any one scanning point near a scanning panel of an acoustic test module; calculating a output power spectrum of the array for each scanning point; and calculating a noise amplitude value in any requirement scanning face, thereby obtaining a noise source graph of the high-speed train module in the acoustic wind tunnel. Compared with the prior art, the beneficial effects of the positioning method are that the pneumatic noise source position of the high-speed train module can be precisely and quickly positioned, and a sound source propagation path can be precisely given in a large acoustic wind tunnel; wind drift distance is corrected without calibration of a noise source; the result of the positioning method is more precise and reliable than numerical simulation; the cost is quite low and the efficiency is quite high compared with real train measurement; and the positioning method is free from restrictions like the railway landform, environment and weather.

The invention discloses a preparation method of a sandy wind solidification polymerizing agent which is that under the normal temperature and pressure, magnesium oxide dissolved by the water is made into A solution; formaldehyde and urea fully dissolved are made into B solution and acetone and rare earth salt fully dissolved are made into C solution. Three well-distributed solutions after aging for over 4 hours are mixed and then are fully stirred to prepare the sandy wind solidification polymerizing agent. With simple technique, the preparation method has no harmful and toxic residues in the process of the preparation. When used for producing the building bricks, the method uses the aeolian sand as the main raw material, thus really realizing turning sand into treasure and inaugurating a new approach to curing desert. As the building bricks are produced by the sandy wind solidification polymerizing agent, plentiful coals, natural gases and water can be saved with wide application prospect, low production cost and easy popularization.

The invention provides a sand fixation cultivation medium for wind-drift sand in a high attitude area and a using method thereof and relates to the field of sand prevention and treatment. The sand fixation cultivation medium comprises the following components in percentage by volume: 50-55% of sandy loam, 30-35% of wood flour, 10-15% of distillers' grains, 1-2% of slow release fertilizer, 0.02-0.04% of an aggregate agent, 0.02-0.04% of a water-retaining agent and 3-5% of a thermal insulation material, wherein the wood flour is powder ground from plate and wood processing leftover materials andhas a particle size of less than 5mm; the distillers' grains are distillers' grains produced by beer production in local brewery in a cultivation area and are ground to pass through a 5-mm sieve; thecontent of active ingredients such as nitrogen, phosphorus and potassium in the slow release fertilizer is more than or equal to 45%; the thermal insulation material refers to one or more of papermaking black liquid, liquid emulsified asphalt and humic acid. The medium using method comprises the steps: adding water into all sand fixation cultivation medium materials in a hydroseeder to be uniformly stirred, mixing sand fixation plant seeds, and spraying onto the sand surface, wherein the spraying thickness is 2-6cm. The sand fixation cultivation medium disclosed by the invention has beneficial effects of being good in heat insulation, water-retaining, resistant to freezing and thawing, wind erosion and rain wash and difficult to crack.

A pesticide composition includes a pesticide component. The pesticide component is an herbicide and is mixed with water for commercial and residential application. The pesticide composition also includes an alkylphenol ethoxylate surfactant and propylene glycol, which increase the effectiveness of the pesticide component. The pesticide composition further includes a thickener component having a terminal group formed from a 1,2-linear alkyl epoxide having from 16 to 18 carbon atoms. The thickener component includes the reaction product of a combination of ethylene oxide and propylene oxide, 1,1,1-trimethyolpropane, and the 1,2-linear alkyl epoxide. The thickener component modifies rheological properties of the pesticide composition to reduce a tendency of the pesticide composition to disperse when sprayed, to reduce a potential wind-drift of the pesticide composition, to increase a shear viscosity and retention, and to increase a rain fastness of the pesticide composition, resulting in a decrease in costs and potential environmental pollution.

The invention discloses a vegetation innovation material for governing desertification quickly. The material comprises a degradable non-woven fabric surface layer, a vegetation nutrient matrix layer and a degradable non-woven fabric bottom layer which are successively arranged from top to bottom; the edge of the degradable non-woven fabric surface layer and the edge of the degradable non-woven fabric bottom layer are pressed integrally, and a plurality of buckle rings are arranged at the pressed part; insertion labels inserted into a sandy land are inserted into the buckle rings. The inventionalso discloses the application of the material in governing desertification. The vegetation innovation material is attached to the surface of the sandy land and prevents the formation of wind-drift sand effectively, thereby providing a steady growing environment for vegetation. The material fully plays water absorbing and water retaining and efficient water saving roles by means of natural rainfall, so that restoration of ecological vegetation is further promoted.

The invention belongs to the technical field of special equipment for power transmission lines, and particularly relates to a wind-drift-resistant insulator mounting device for a jumper wire in an angle-steel tower of a power transmission line. The wind-drift-resistant insulator mounting device comprises the angle-steel tower. The angle-steel tower is of a bilateral symmetry structure, a left middle wing and a right middle wing are respectively arranged on the left side and the right side of the middle of the angle-steel tower, a left top wing and a right top wing are respectively arranged on the left side and the right side of the top of the angle-steel tower, a left connecting rod made of angle steel is connected to the left end of the left top wing, a right connecting rod made of angle steel is connected to the right end of the right top wing, protective fences are arranged on the upper sides of the left connecting rod and the right connecting rod, radar anti-bird instruments are arranged on the tops of the protective fences, mounting angle steel is arranged on the lower sides of the left connecting rod and the right connecting rod, wind-drift-resistant insulators are fixedly connected with the mounting angle steel, a left insulating protective frame is connected to the middle of the left middle wing, and a right insulating protective frame is connected to the middle of the right middle wing. The wind-drift-resistant insulator mounting device has the advantage that the wind-drift-resistant insulators with line turning angles larger than 45 degrees can be mounted by the aid of the wind-drift-resistant insulator mounting device.

The invention relates to a wind correction method for multiple working modes in the deceleration landing phase of a spacecraft. Through the method, landing point deviation caused by drifting of a re-entry capsule descending by taking a parachute due to a wind field can be acquired, a deviation value is injected into a manned spacecraft in a parameter form, and landing accuracy of the spacecraft is unaffected by the wind field. According to the method, an algorithm solving process is divided by taking the working modes as bases, the process is composed of multiple feature calculation modules, all the modules use a resistance feature parameter and working phase matching method, and solving control of working modules is detailed. By execution of the solving process integrated with the multiple feature calculation modules, accurate wind drift deviation of the deceleration landing phase is acquired, and the problem of deviation in landing accuracy due to wind field changes, the working modes and the like after the spacecraft opens the parachute is solved. The method can be applied to wind correction control on the landing accuracy in the working phase of a spacecraft deceleration landing system.

A pile array sand fixing method relates to an engineering sand control method. Piles are inserted in sand directly to form a pile array. The piles are vertically fixed through the underground portions of the piles, and overground portions of the piles disturb wind-drift sand. The ratio of total surface area of the overground portions of the pile array to floor area is larger than 25%, and drift sand is basically fixed. When the ratio of total surface area of the overground portions of the pile array to floor area is little, semi-fixed effect of different degrees can be achieved. When sand accumulated in the pile array reaches a certain thickness, the height of pile bodies is uplifted correspondingly, and new sand fixing performance can be recovered. The pile array sand fixing method overcomes the shortcoming that an existing glass check sand fixing method wastes labor and time, is low in work efficiency, high in cost, short in service life and the like, and has the advantages of being simple and reasonable in structure, low in cost, strong in practicability, convenient to pave and bury, long in service life and the like.

The invention relates to a triangular sand control dam applied to prevention and treatment of sandstorm. The triangular sand control dam is arranged in windward direction of an object to be protected, the section of a dam body is in shape of an isosceles triangle with an inclination angle of 40 degrees, the height H of the dam body is 6.0-7.5m, the length L of the dam body is equal to the length S of the object to be protected, and the maximum space between the object to be protected and the sand control dam is the 17 times the height of the sand control dam. The invention provides a new type of a sand control engineering which can block wind-drift sand at a windward slope and can also form a large-range effective protective distance on the leeward side. The triangular sand control dam disclosed by the invention is already applied to the prevention and treatment of sandstorm at a second double-line Yumen section of Lanxin and obtains excellent sand control effect. Based on the practice, the triangular sand control dam with the inclination angle of 40 degrees exerts the excellent sand control effect and provides successful experience and theoretical direction for the prevention and the treatment of the sandstorm in gravel gobi, the maintenance of transport lines and the protection of important cultural objects and historic monuments and economic facilities in China.