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43 results about "Wind stress" patented technology
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In physical oceanography and fluid dynamics, the wind stress is the shear stress exerted by the wind on the surface of large bodies of water – such as oceans, seas, estuaries and lakes. It is the force component parallel to the surface, per unit area, as applied by the wind on the water surface. The wind stress is affected by the wind speed, the shape of the wind waves and the atmospheric stratification. It is one of the components of the air–sea interaction, with others being the atmospheric pressure on the water surface, as well as the exchange of heat and mass between the water and the atmosphere.
Triangular warning board
The invention discloses a triangular warning board. The triangular warning board comprises three board bodies which are connected with one another and define a triangle, a reflecting coating is arranged on each board body, connecting blocks are arranged in all positions where the board bodies are connected, rotating structures are arranged between two ends of each board body and the connecting blocks, the rotating structures at the two ends of the same board body are coaxial, the connecting blocks are connected with support bars, and fixing blocks are connected below the support bars. After the triangular warning board in the structure is blown by the wind, the board bodies forming the triangular warning board can rotate, and the stressed area of the triangular warning board is reduced through rotation, so that the wind stress on the triangular warning board is reduced, and the possibility that the triangular warning board is broken by the wind is decreased.
Owner:NINGBO YONGJIA AUTO PARTS
Motor internal stator and manufacturing method thereof
InactiveCN101488688AIncrease profitSave punching costsManufacturing stator/rotor bodiesBand shapeEngineering
Owner:NINGBO POLARIS TECH
Preparation method of optic fiber sensing ring capable of releasing internal winding stress force
ActiveCN104251709AEliminate the effects ofReduce thermal stressMeasurement devicesGyroscopePolarization-maintaining optical fiber
The present invention belongs to the technical field of optic fiber gyroscopes, and in particular relates to a preparation method of an optic fiber sensing ring capable of releasing internal winding stress force. The method comprises: filling a half cylinder into the concave groove on the outer circumference of the ring skeleton; adopting winding tool equipment to fix the ring skeleton, wherein the hole opening portion of the winding tool equipment and the concave groove of the ring skeleton are arranged in a staggered form; carrying out a dehumidifying treatment on the polarization maintaining optical fiber and the ring skeleton; adopting a quadrupole symmetry method to closely wind the polarization maintaining optical fiber on the ring skeleton in a side-by-side manner so as to form the optic fiber ring; curing the optic fiber ring, and under the semi-solidification state, pulling out the half cylinder; carrying out secondary curing on the optic fiber ring; and disassembling the winding tool equipment to complete the production of the optic fiber sensing ring. According to the present invention, the adverse effects of the winding stress force on the gyroscope performance are eliminated, and the work stability and the precision of the gyroscope under the temperature change environment are improved.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST
Square lithium battery lamination machine and lamination technology
ActiveCN106532134AHigh degree of automationWithout human interventionFinal product manufactureSecondary cellsOperation modeEngineering
The invention discloses a square lithium battery lamination machine and a lamination technology used for solving the problem of a poor lamination effect in the prior art. The square lithium battery lamination machine comprises a first diaphragm release mechanism, a first positive plate release part, a second diaphragm release mechanism, a first negative plate release part, a third diaphragm release mechanism, a positive plate heat sealing part, a folding part, a second negative plate release part, a second positive plate release part and an arrangement part which are sequentially arranged from an initializing end to a terminating end, wherein main plates of positive plates and negative plates superpose and electrode parts do not superpose, and the positive plates and the negative plates are fixed between three diaphragms and discontinuously and uniformly distributed to form a diaphragm strip; and a laminated sheet is finally formed through folding. By adopting a Z-shaped folding mode, the winding stress is avoided, the product uniformity is good, an assembly operation mode is better in uniformity than a traditional lamination mode, and by adopting double-layer heat sealing, the efficiency is high.
Owner:蜂巢能源(武汉)有限公司
Automatic cable twisting and winding production line and method thereof for precisely controlling pitch
InactiveCN106743980AQuality improvementPrecise control of transmission speedFilament handlingWinding machineProduction line
Owner:DONGGUAN ZHI HAN ELECTRICAL MACHINERY
Winding stress assessment method based on three-dimensional electromagnetic coupling model of transformer
ActiveCN105488290AHigh utility valueDesign optimisation/simulationSpecial data processing applicationsElectromagnetic couplingEngineering
The invention discloses a winding stress assessment method based on a three-dimensional electromagnetic coupling model of a transformer. The method is characterized by comprising: establishing the three-dimensional electromagnetic coupling model of the transformer and solving the model; calculating a leakage magnetic field of the transformer based on a vector magnetic potential node finite element method; and by simulating magnetic field distribution in the transformer, performing calculation and analysis on a stress on a winding. After the winding deforms, a geometric structure of the winding is no longer regular and a magnetic structure coupling model programmed by utilizing a current loading principle is not applicable, so a winding stress value is calculated from a two-dimensional model corresponding to a three-dimensional model and then the stress value is loaded into the corresponding three-dimensional model through a related program to calculate the stress on the winding. The deformation of the winding is reflected through a difference of the sunken degrees of the winding between two supporting strips, so that the conditions of stresses on the model in different accumulation situations are observed. The method provides a basis for judging the structural stability of the winding of the transformer, and has the advantages of being scientific, reasonable, real, effective, high in practical value and the like.
Owner:NORTHEAST DIANLI UNIVERSITY +2
Distributed optical fiber-based transformer winding stress monitoring system
InactiveCN105973511AFully grasp the stress situationHigh speed demodulationForce measurement by measuring optical property variationEngineeringElectromotive force
The invention belongs to the on-line monitoring system technical field and relates to a distributed optical fiber-based transformer winding stress monitoring system. The distributed optical fiber-based transformer winding stress monitoring system is characterized in that a plurality of fully-distributed optical fiber stress sensors (1) are pre-embedded in electromagnetic wires of a high-voltage winding (3); the fully-distributed optical fiber stress sensors (1) are connected together by an optical fiber (2) and are fixed through clamping devices (4); the optical fiber (2) is led out from the fully-distributed optical fiber stress sensors (1) and is connected with a high-speed demodulation system; the output end of the high-speed demodulation system is connected with a stress acquisition system; and therefore, real-time monitoring of the stress of the transformer winding can be realized. With the distributed optical fiber-based transformer winding stress monitoring system adopted, rapid detection and distributed measurement of the stress of the winding can be realized; stress conditions at different positions of the winding can be mastered accurately under the effect of an impact force; the defect of low resolution of an existing demodulation instrument can be eliminated; and fast distributed monitoring of the electromotive force of the winding can be realized.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Terminal electric tape automatic winding apparatus
InactiveCN108054687AGuaranteed reliabilityThe same degree of elastic deformationApparatus for joining/termination cablesArticle deliveryEngineeringConductor Coil
The invention discloses a terminal electric tape automatic winding apparatus, and belongs to the field of engineering daily tools. A handheld base frame is connected with a sliding rail, a controlleris installed on the handheld base frame, and a friction wheel is installed on a motor. A rotating ring is arranged in the sliding rail, and an insulating tape roll is fixed on an anti-slip ball. A fixed screw rod is installed on the two sides of a damping wheel, an anti-skid ball is arranged at one end of the fixed screw rod, a damping shaft is installed below one end of a third support, and an electromagnet is installed above a second support. The friction wheel is driven to rotate through rotation of the motor, so that the friction wheel drives the rotating ring to rotate, and the process ofmanual winding of workers is replaced. Damping rotation is carried out through the damping wheel and the damping shaft, so that the insulation adhesive tape wound on the wire core is ensured to havethe same elastic deformation degree, and the winding stress of the adhesive tape is uniform. The work of workers is replaced, and the winding quality and efficiency of the adhesive tape are improved.
Owner:杨雪锋
Joined wing structure-form wing load measurement method
ActiveCN107766612AEliminate the effects ofHigh precisionGeometric CADSustainable transportationLoad profileWind stress
The invention relates to a joined wing structure-form wind load measurement method. The method is characterized in that a joined wing structure wing load measurement strain meter arrangement and loadcalibration experiment process is formulated according to joined wing structure-form wind stress characteristics, coupled loads at joined wind structure wing connections are identified, and wind loadmodeling influences caused by connection forms are eliminated, so as to form a joined wing structure form-oriented wind load measurement method. According to the method, influences, on wing measurement load profile strain bridge strain output, of coupled loads caused by the joined wing structure form can be eliminated, so that precision of a joined wing structure-form wing load equation is improved, flight loads of joined wing structure-form wings can be correctly measured, and reliability of flight load measurement results can be improved.
Owner:CHINESE FLIGHT TEST ESTAB
A simultaneous calibration method for multiple ocean model parameters
ActiveCN109902136AAvoid the disadvantages of not considering the physical meaningImprove forecast accuracySustainable transportationGeographical information databasesPositive pressureModel parameters
The invention provides a simultaneous calibration method for multiple ocean model parameters, which comprises the following steps: constructing a ground wave radar observation system, and obtaining surface flow field observation data; Acquiring seawater stratification and water depth of the research sea area, and deriving a flow field with average depth from a surface flow field; Constructing a two-dimensional positive pressure ocean accompanying assimilation model considering wind stress and sea surface air pressure under a spherical coordinate system; Giving an empirical formula of the windstress drag coefficient and the bottom friction coefficient in the two-dimensional positive pressure ocean accompanying assimilation model, and giving an empirical coefficient adjustment strategy in the empirical formula; Based on a two-dimensional positive pressure ocean accompanying assimilation model, assimilating flow field data with average depth, and meanwhile, carrying out optimization adjustment on the wind stress drag coefficient and an empirical coefficient in a bottom friction coefficient empirical formula, so that simultaneous calibration of the wind stress drag coefficient and thebottom friction coefficient is realized. According to the method, the model parameters are ensured to have certain physical significance, and a plurality of model parameters are efficiently determined at the same time.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Typhoon center positioning method based on wind stress disturbance
The invention discloses a typhoon center positioning method based on wind stress disturbance, and relates to the technical field of ocean remote sensing. The method comprises the following steps: selecting a remote sensing image waveband as typhoon center positioning input data; selecting and generating sea-land mask data with corresponding resolution; calculating gradients of the infrared image along the longitude direction and the latitude direction respectively; calculating a sea surface wind field disturbance factor; taking the maximum disturbance factor position of the sea surface wind field as a circle center, taking a set threshold value as a radius, and determining the minimum disturbance factor position in the range as the typhoon center position. Aiming at the problem of sea surface typhoon center positioning, the invention provides a sea surface typhoon center positioning method based on a wind stress disturbance theory, and the position of a typhoon center can be determinedby utilizing a far infrared remote sensing image and combining with the approximate position of a forecast typhoon.
Owner:南京海气智绘信息技术有限公司
Track wheel with division of work between track and chain, methods for fitting pitch rails to flexible chain and for buffering pre-stress, and open-close type wheel axle
InactiveUS20150336624A1Easy to disassembleIncrease power consumptionMetal-working apparatusEndless track vehiclesWork distributionTransmitted power
The present invention relates to a caterpillar track wheel with division of work between track and chain, methods for fitting unit track with flexible chain ring, methods for buffering prestress, and an open-dose type axle housing. Since a structure that each unit track is separated from a flexible chain ring is adopted, the thickness of the unit tracks does not influence the winding stress of the flexible chain ring and the unit tracks without thickness limitation can effectively disperse stress from the ground to more supporting wheels. Since the thinner flexible chain ring is only responsible for serially connecting the unit tracks and transmitting power, the winding stress and the tension change are reduced.
Owner:CHONGQING NENGMA TECH
Steelwire winder stress fluctuation control method and stress fluctuation control device employing same
InactiveCN102689816AReduce transient stressStress fluctuations are smallFilament handlingPull forceEngineering
The invention belongs to the field of stress control of a PCCP (Prestressed Concrete Cylinder Pipe) winder and particularly relates to a steelwire winder stress fluctuation control method. Two stress fluctuation controllers are arranged between a stress wheel and a guide wheel of the steelwire winder to adjust and control the winding stress twice. The invention also relates to a stress fluctuation control device employing the method. The device comprises two stress fluctuation controllers which are sequentially arranged between the stress wheel and the guide wheel of the steelwire winder, a shock-absorbing guide wheel is arranged between the two controllers, and the second stress fluctuation controller is provided with a tension sensor. According to the invention, unstable stress of the traditional steelwire winder is overcome, stress fluctuation amplitude is reduced, product quality is ensured, and steelwire winding speed and winding efficiency are improved.
Owner:SHANDONG LONGQUAN PIPELINE ENG
Paint dipping device for windings of power transformer
ActiveCN102683002AEven by forceTake advantage ofLiquid surface applicatorsCoatingsElectricityTransformer
A paint dipping device for windings of a power transformer consists of an upper pressing plate, a lower pressing plate and three pull screws, wherein three groups of round paint spilling holes and square paint spilling holes are formed on the upper pressing plate, as well as the lower pressing plate. The paint dipping device overcomes the shortcoming that a traditional single or single group of winding has to be fixed by a steel plate for paint dipping and vacuum drying, has a reasonable structure, is uniform in winding stress and good in paint dipping effect and can complete paint dipping ofthree windings of one power transformer at one time. By adopting the paint dipping device provided by the invention, a plurality of windings can be subjected to vacuum drying in each tank, so that the electricity-saving and insulating paint utilization effects are remarkable, the operating efficiency is high and the cost is lowered.
Owner:常德国力变压器有限公司
Charged winding stress release device
InactiveCN104612856AReduce tanglingEasy to wind in batchesRocket engine plantsEngineeringConductor Coil
The invention discloses a charged winding stress release device which resolves the problems that an engine works abnormally or even shuts down when the charging is subjected to winding stress in the winding process. The charged winding stress release device is composed of a mould core, a front check ring, a rear check ring, a front clamping groove, a rear clamping groove, a front positioning ring, a rear positioning ring and throat hoops, wherein the front positioning ring and the rear positioning ring are arranged in the front clamping groove and the rear clamping groove respectively to form two independent positioning tools and hooped tightly through the throat hoops, the front and rear positioning tools are arranged at the two ends of the charging respectively, and the mould core is inserted and positioned through the front and rear check rings. The charged winding stress release device is suitable for releasing the stress generated in the charged winding process of a screwing star hole.
Owner:XIAN MODERN CHEM RES INST
Simulated movable comb-shaped branch/leaf skeleton and manufacturing method thereof
InactiveCN102524997AImprove elastic deformation abilityWith simulated dynamic effectArtificial flowers and garlandsCarrying capacityEngineering
The invention relates to the technical field of artificial plants and particularly relates to a simulated movable comb-shaped branch / leaf skeleton and a manufacturing method thereof. The branch / leaf skeleton comprises a branch rod and a plurality of leaf rods, wherein the branch rod comprises a plurality of round spring steel bars, the numbers of the spring steel bars are gradually increased in the direction from the tail to the root of the branch rod, a plurality of steel wire hoops are bound outside the spring steel bars, and the steel wire hoops are distributed in sequence with a certain distance in the direction from the tail to the root of the branch rod. The branch rod is formed by binding the round spring steel bars, has a good elastic deformation property, can automatically recover after deformation, can swing along with wind under the wind action, has simulation and movable effects, can effectively eliminate wind stress fatigue, and has strong resistance to plastic deformation. Besides, the numbers of the spring steel bars are gradually increased from the tail to the root of the branch rod according to different loads on individual parts of the branch rod, so that the mechanical strengths of the branch rod are gradually increased from the tail to the root of the branch rod and the load-carrying capacity and the wind resistance are enhanced, as a result, the outdoor service life of the branch / leaf skeleton is greatly increased.
Owner:东莞市荣昊工艺实业有限公司
Track wheel with division of work between track and chain, methods for fitting pitch rails to flexible chain and for buffering pre-stress, and open-close type wheel axle
InactiveUS9469357B2Facilitate assembling and disassemblingReduce consumptionEndless track vehiclesWork distributionPre stress
The present invention relates to a caterpillar track wheel with division of work between track and chain, methods for fitting unit track with flexible chain ring, methods for buffering prestress, and an open-dose type axle housing. Since a structure that each unit track is separated from a flexible chain ring is adopted, the thickness of the unit tracks does not influence the winding stress of the flexible chain ring and the unit tracks without thickness limitation can effectively disperse stress from the ground to more supporting wheels. Since the thinner flexible chain ring is only responsible for serially connecting the unit tracks and transmitting power, the winding stress and the tension change are reduced.
Owner:CHONGQING NENGMA TECH
Transformer winding stress monitoring device and monitoring method thereof
InactiveCN106052911AQuick checkAccurately grasp the stress situation at different positionsForce measurement by measuring optical property variationCross sensitivityFiber
The invention discloses a transformer winding stress monitoring device, which comprises a first fiber, fiber stress sensors, a second fiber, a broadband light source, a wavelength division multiplexing device, a photoelectric detector, a signal amplifier, a signal processor and a display screen. An electromagnetic wire of a transformer winding is internally provided with the first fiber, and the first fiber is provided with the plurality of fiber stress sensors, so that a plurality of points on the transformer winding can be monitored, quick detection and distributed measurement of the transformer winding can be realized, and stress information of the transformer winding at different positions can be accurately known under the function of impact force; through the arrangement of the signal processor and the display screen, real-time analysis and display of quick impact force of the winding can be realized; and each fiber stress sensor is internally provided with a first grating and a second grating to obtain overall information of stress and temperature and temperature information respectively, and thus the problem of temperature cross-sensitivity when carrying out stress monitoring on the transformer winding is solved.
Owner:DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
Automatic-winding-device-based rotary transformer winding method
ActiveCN104701004AIncrease productivityOptimizing Winding ParametersTransformersInductancesGlass fiberElectrostatic coating
The invention relates to an automatic-winding-device-based rotary transformer winding method. According to the technical scheme of the method, an insulation treatment manner of electrostatic coating on an iron core is carried out for replacing the insulation treatment manner of padding 6050 polyimide films and pasting 3240 epoxy glass fiber end pieces on the conventional iron core; research and smooth clamping of the rotary transformer iron core are realized according to the difference of winding manners and slot fullness rates, the parameters of winding span and winding tension are adjusted, and an automatic winding program is set and programmed to finish winding automatically; winding parameters and programs are optimized according to the rotary transformer test data after winding to wind qualified products. By virtue of the automatic-winding-device-based rotary transformer winding method, the rotary transformer processing period is shortened; meanwhile, the machine winding stress is uniform; the consistency is good; the survival rate of the rotary transformer is increased.
Owner:FLIGHT AUTOMATIC CONTROL RES INST
Wind stress coefficient expression method and system comprehensively considering influences of wind speed, blowing range and water depth
ActiveCN111723461ATo overcome the shortcomings of only considering the single factor of wind speedImprove limitationsDesign optimisation/simulationSpecial data processing applicationsAtmospheric sciencesWater level
The invention discloses a wind stress coefficient expression method and system comprehensively considering wind speed, blowing range and water depth influences, and belongs to the field of wind-wave-flow numerical simulation research. The method is based on a wind-wave-flow coupling action mechanism of water areas such as lakes and oceans. Two dimensionless numbers, namely a blowing range Froude number and a blowing range Reynolds number, capable of representing wind-wave-flow action intensity are constructed, a wind stress coefficient expression form containing an undetermined coefficient isestablished, then the undetermined coefficient is obtained by adopting a nonlinear regression method in combination with experiment and actual measurement data, and a final wind stress coefficient expression is obtained. According to the method, the defect that a traditional wind stress coefficient expression only considers the influence of a single wind speed factor is overcome, the limitation that the traditional wind stress coefficient expression is difficult to adapt to lake numerical simulation is broken through, and a Taihu lake water level verification result shows that the constructedwind stress coefficient expression has good rationality and great superiority. The method can be widely popularized in the field of wind-wave-flow numerical simulation research of water areas such aslakes and oceans.
Owner:NANJING HYDRAULIC RES INST
Well drilling exploration guide rope
The invention provides a well drilling exploration guide rope which comprises a rope core and a guide rope protection layer wrapping the rope core. A lubricating material is coated between the rope core and the guide rope protection layer. Compared with the prior art, the well drilling exploration guide rope has the advantages that the outer layer guide rope protection layer is made of austenitic stainless steel, Vaseline is filled between the guide rope protection layer and the rope core, the rope core is not prone to being broken by winding stress in a guide rope winding process when the submergence depth of the exploration guide rope increases, and the service life of the guide rope is prolonged.
Owner:海安发达石油仪器科技有限公司
Honeysuckle cultivation method
InactiveCN104969735AHigh light transmittanceImprove photosynthetic efficiencyHorticultureLateral rootBorder line
The invention relates to a honeysuckle cultivation method comprising the specific steps of field preparation, seed selection, field planting, fertilization and water delivery, field management, tree body trimming and pruning, and pest control and disease control. In the field preparation step, wide line spacing and narrow line spacing are arranged alternately, wherein the width of a wide line is 150-200cm and the width of a narrow line is 50-70cm, and water pipes are laid in the middle of the narrow lines. Vigorous seedlings of improved varieties are selected, wherein the heights of the seedlings are higher than 0.35m and the base diameters of the seedling are larger than 0.015m. A taproot retention length is higher than 0.155m, and a lateral root number is larger than 16. In the field planting step, a sowing pit spacing is 30-40cm, and one plant is planted in one pit. According to the method, a narrow line is arranged between every two lines, such that a plant border line dominance is artificially created, light transmittance between honeysuckle plants is increased, and photosynthetic efficiency is improved. The method facilitates honeysuckle plant top dressing, water delivery and harvesting, and facilitates nutrient balanced application and absorption. Wind stress on the plants is reduced, and honeysuckle yield is improved.
Owner:天津市利源祥苗木种植专业合作社
Sand fixation agent spraying trailer adopting solar battery as power supply
ActiveCN102877462AReduce consumptionThe desert is flat and unobstructedClimate change adaptationSoil preservationEngineeringThermal expansion
The invention relates to a sand fixation agent spraying trailer adopting a solar battery as a power supply, which belongs to the technical field of environmental protection application. A solar battery is connected with a photovoltaic controller through a conducting wire, the photovoltaic controller is connected with an energy storage battery through a conducting wire, the energy storage battery is connected with a control device through a conducting wire, and the control device is connected with a push bucket adjusting device, a pressure device, an electric heat conversion device, a sand stop wall outlet pipe adjusting device and a sand stirring auger power device through a conducting wire. The sand fixation agent is adequately mixed with sand particles to be squeezed into a sand wall, the sand wall is discharged onto the desert sand surface to form a sand stop wall, and the sand stop wall is firmer since the sand particles and the sand fixation agent are adequately mixed and squeezed; and when the sand fixation agent to be heated is utilized, the mixture of the sand fixation agent and the sand particles are heated. A sand stop wall system is built on the desert sand surface according to the requirement on control and prevention of desertification, the influence of hot expansion and cold shrinkage on the sand stop wall is small, and the intersected sand stop wall can defuse the wind stress and is free from being easily covered by drift sand.
Owner:WUXI TONGCHUN NEW ENERGY TECH
Walnut cultivation method
InactiveCN104969811AHigh light transmittancePromote absorptionCultivating equipmentsJuglans sigillataBorder line
The invention relates to a walnut cultivation method comprising the specific steps of field preparation, seed selection, field planting, fertilization and water delivery, field management, tree body trimming and pruning, and pest control and disease control. In the field preparation step, wide line spacing and narrow line spacing are arranged alternately, wherein the width of a wide line is 100-120cm and the width of a narrow line is 29-33cm, and water pipes are laid in the middle of the narrow lines. Vigorous seedlings of improved varieties are selected, wherein the seedlings are juglans sigillata dode or XiXiang walnut seedlings with heights higher than 0.35m and base diameter larger than 0.015m are selected. A taproot retention length is higher than 0.155m, and a lateral root number is larger than 16. In the field management step, with the water delivery pipe, soil water content is maintained at 70-85% of a maximal field water capacity, and fertilizer is delivered during water delivery. According to the method, a narrow line is arranged between every two lines, such that a plant border line dominance is artificially created, light transmittance between walnut plants is increased, and photosynthetic efficiency is improved. The method facilitates walnut plant top dressing, water delivery and harvesting, and facilitates nutrient balanced application and absorption. Wind stress on the plants is reduced, and walnut yield is improved.
Owner:天津市利源祥苗木种植专业合作社
Bladeless fan with mirror
The invention discloses a bladeless fan with a mirror, wherein the bladeless fan with the mirror comprises a fan body; a base of the fan body is internally provided with a turbine fan; the turbine fan extracts air beside the base and blows the air out at a circular ring air outlet above; the rear side of the circular ring air outlet of the bladeless fan is provided with a wind blocking mirror; and the wind blocking mirror is arranged at the air outlet at the rear side. The air blown out by the fan provided by the invention can be collected to one surface, the wind stress is intensified, also the bladeless fan part of the fan is provided with the mirror, and convenience is provided for making up and looking into the mirror for people.
Owner:罗赟
Corn growing and cultivation method
The invention relates to a corn growing and cultivation method comprising specific steps of field preparation, seed selection, sowing, fertilization, water delivery, and field management. Sowing, pipe laying, mulching and soil covering are completed with an air-suction precision seeder. A sowing hole space is 35-45cm, and one seed is sowed in one hole. After sowing, a water delivery pipe is connected, and seedling water is delivered, wherein 16-30m<3> of water is delivered to every 500m<2> of field. The fertilizer is applied with water during the water delivery process. In the field management step, with the water delivery pipe, soil water content is maintained at 70-85% of a maximal field water capacity, and fertilizer is delivered during water delivery. According to the method, a narrow row is arranged between every two rows, such that a plant border row dominance is artificially created, light transmittance between corn plants is increased, and photosynthetic efficiency is improved. The method facilitates corn plant top dressing, water delivery and harvesting, and facilitates nutrient balanced application and absorption. Wind stress on the plants is reduced, and corn yield is improved.
Owner:TIANJIN JI COUNTY LIANZHONG GRAIN GROWING SPECIALIZED COOP
Test device for rapidly evaluating atmospheric wind stress corrosion and test method thereof
PendingCN111896460ARapid evaluation of erosion behaviorRapid Evaluation LawWeather/light/corrosion resistanceEngineeringTest chamber
Owner:GUANGDONG OCEAN UNIVERSITY
Paint dipping device for windings of power transformer
ActiveCN102683002BEven by forceTake advantage ofLiquid surface applicatorsCoatingsElectricityTransformer
A paint dipping device for windings of a power transformer consists of an upper pressing plate, a lower pressing plate and three pull screws, wherein three groups of round paint spilling holes and square paint spilling holes are formed on the upper pressing plate, as well as the lower pressing plate. The paint dipping device overcomes the shortcoming that a traditional single or single group of winding has to be fixed by a steel plate for paint dipping and vacuum drying, has a reasonable structure, is uniform in winding stress and good in paint dipping effect and can complete paint dipping ofthree windings of one power transformer at one time. By adopting the paint dipping device provided by the invention, a plurality of windings can be subjected to vacuum drying in each tank, so that the electricity-saving and insulating paint utilization effects are remarkable, the operating efficiency is high and the cost is lowered.
Owner:常德国力变压器有限公司
A drug-wound stress release device
The invention discloses a charged winding stress release device which resolves the problems that an engine works abnormally or even shuts down when the charging is subjected to winding stress in the winding process. The charged winding stress release device is composed of a mould core, a front check ring, a rear check ring, a front clamping groove, a rear clamping groove, a front positioning ring, a rear positioning ring and throat hoops, wherein the front positioning ring and the rear positioning ring are arranged in the front clamping groove and the rear clamping groove respectively to form two independent positioning tools and hooped tightly through the throat hoops, the front and rear positioning tools are arranged at the two ends of the charging respectively, and the mould core is inserted and positioned through the front and rear check rings. The charged winding stress release device is suitable for releasing the stress generated in the charged winding process of a screwing star hole.
Owner:XIAN MODERN CHEM RES INST
Typhoon-proof high-rise building
InactiveCN103132764BReduce bending momentEfficient defenseProtective buildings/sheltersRenewable energy source integrationEavesArchitectural engineering
The invention provides a typhoon-proof high-rise building which comprises a building main body formed by concrete and rebars, wherein the building main body is in a cylindrical shape, continuous spiral wind guiding eaves are made on the periphery of the building main body from top to bottom, the spiral wind guiding eaves are formed by the concrete and the rebars, the periphery of the building main body is a smooth surface, the surfaces of the spiral wind guiding eaves are in a wind stressed structure, and therefore resistance of the spiral wind guiding eaves to wind flow is improved, a large amount of wind power is consumed on the spiral wind guiding eaves, wind resistant capability of the high-rise building can be improved through structural improvement of the typhoon-proof high-rise building on the basis of saving building materials as far as possible.
Owner:孙家宏
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