Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

2777 results about "Vertical axis" patented technology

Receptacle delivery system

A receptacle delivery system for an instrument includes a carriage, a puck supported by the carriage, and a first shelf. The carriage is configured to move from a first location of the instrument to a second location of the instrument. The puck is configured to removably support a receptacle such that a longitudinal axis of the receptacle is substantially coincident with a vertical axis of the puck. The first shelf comprises (a) a base extending substantially transverse to the vertical axis of the puck and (b) a first opening defined by the base, and when the carriage is positioned at the second location, the longitudinal axis of a receptacle seated in the puck extends through the first opening.
Owner:GEN PROBE INC

Vertical axis wind turbine power prediction method based on multi-dimensional environment data

The invention provides a vertical axis wind turbine power prediction method based on multi-dimensional environment data, and relates to the technical field of vertical axis wind turbine power based on the multi-dimensional environment data. Multi-dimensional data are collected in real time based on a sensor network, and the multi-dimensional data comprise environment parameters such as wind speed, turbulence intensity and temperature and humidity, and operation states such as rotor rotating speed and pitch angle; secondly, performing empirical mode decomposition on a vibration acceleration signal, constructing a physical information neural network, taking environmental data and an aerodynamic load frequency domain energy spectrum as input, outputting a real-time wind energy utilization coefficient and an aerodynamic coefficient, and finally, determining the aerodynamic load based on an aerodynamic load time domain signal. A load cyclic spectrum is extracted by adopting online rain flow counting of dynamic window length, an accumulated damage value is calculated in combination with a fatigue damage model of humidity correction, and when the residual life is lower than a threshold value, load peak suppression and power generation efficiency balance are realized through cooperative control of magnetic resistance torque linear attenuation and flap fuzzy PID (Proportion Integration Differentiation).
Owner:INNER MONGOLIA UNIV OF TECH

Deep ultraviolet spherical catadioptric detection objective lens

The invention discloses a deep ultraviolet spherical catadioptric detection objective lens, and relates to the technical field of optics, the deep ultraviolet spherical catadioptric detection objective lens comprises a first lens group, a second lens group and a diaphragm, one side of the first lens group is arranged to be an object plane, the first lens group is located between the second lens group and the object plane, the first lens group is used for converging light and correcting residual aberration of the second lens group, and the diaphragm is arranged between the second lens group and the object plane. The diaphragm is arranged in the middle of the second lens group, and the second lens group and the diaphragm are used for correcting vertical axis aberrations such as coma of the system. The objective lens adopts a spherical catadioptric structure, can realize deep ultraviolet band application, has a large numerical aperture, the numerical aperture can reach 0.8, the smaller wavelength and the larger numerical aperture have higher resolution, so that smaller defects can be detected, the working distance can be greater than 10mm, and the detection precision is improved on the basis of realizing the large NA design. The length of the system is reduced, the number of original parts is reduced, only five lenses are needed, the structure is simple, and installation and detection are convenient.
Owner:CHANGCHUN ZHIRAN PHOTOELECTRIC TECH CO LTD

Two-degree-of-freedom clamp capable of adjusting bending moment and direction of turbine blade and test method

The invention discloses a two-degree-of-freedom clamp capable of adjusting the bending moment and direction of a turbine blade and a test method. The two-degree-of-freedom clamp comprises a blade clamping component, an upper adjustable U-shaped head, a lower adjustable U-shaped head, an upper clamping rod and a lower clamping rod. The blade clamping component is in threaded connection with the upper adjustable U-shaped head and the lower adjustable U-shaped head, the other end of the upper adjustable U-shaped head and the other end of the lower adjustable U-shaped head are connected with the upper clamping rod and the lower clamping rod respectively, and the other end of the upper clamping rod and the other end of the lower clamping rod are connected with an upper clamping head and a lower clamping head of the fatigue testing machine respectively. The upper clamping rod and the upper adjustable U-shaped head are adjustably connected in pairs in the transverse direction intersecting with the vertical axis so as to adjust the eccentricity of the turbine blade load. The eccentric angle of the blade load can be adjusted by adjusting the rotation cycle of the blade clamping component. According to the clamp disclosed by the invention, by adjusting the eccentricity and the eccentricity angle during a turbine blade test, different bending moment directions and relative sizes of different sections during the turbine blade test can be realized, so that the aim of simulating a real load is fulfilled.
Owner:AECC HUNAN AVIATION POWERPLANT RES INST

Bracket for a vehicle door

The invention relates to a holder (10) for a vehicle door, in particular for a side door or rear revolving door of a motor vehicle, comprising a rotatable door holder arm which is fastened at a first end to the body and at a second end to the vehicle door, wherein the door holder arm, during an opening movement of the vehicle door, simultaneously executes a rotation about a substantially vertical axis (Z) and a rotation about an axis (X1, X2) running transversely thereto, wherein a distance between the vehicle door and the body can be changed during the opening process by means of the combined rotation movement.
Owner:MERCEDES BENZ GROUP AG

Transcatheter deliverable prosthetic heart valves and methods of delivery

A prosthetic valve includes a frame and a flow control component. The frame has an aperture extending through the frame about a central axis. The flow control component is mounted within the aperture and is configured to permit blood flow in a first direction approximately parallel to the vertical axis from an inflow end to an outflow end of the flow control component and to block blood flow in a second direction, opposite the first direction. The frame has an expanded configuration with a first height along the central axis, a first lateral width along a lateral axis perpendicular to the central axis, and a first longitudinal length along a longitudinal axis perpendicular to the central axis and the lateral axis. The frame has a compressed configuration with a second height less than the first height and a second lateral width less than the first lateral width.
Owner:VDYNE INC

Accessory mount for environmental surface

An accessory mount allows accessories to be removably and adjustably mounted to a surface. In an example, the surface may be that of a watercraft, and the accessory may be a fishing rod. The mount may be used with a track fixable to an environmental surface or mounted directed to the environmental surface. When used with a track, a post of the accessory mount releasably engages the track. Slidable engagement of the post allows lateral or horizontal adjustment of the accessory. An accessory engaging member is adjustable in relation to the post about a horizontal axis and a vertical axis, so that angular and azimuthal rotational adjustments of the accessory are enabled. A single lever is used to make angular and rotational adjustments, and to release the accessory engaging member from the post.
Owner:YAKATTACK LLC

Aero-engine part machining quality detection method based on data management

The invention relates to the technical field of aero-engine quality inspection, and discloses an aero-engine part machining quality detection method based on data management. The method comprises the following steps: collecting multi-source machining data of a part, wherein the multi-source machining data comprises dimensional tolerance, surface roughness and material hardness data; key quality features are extracted according to a design drawing, and the key quality features and the multi-source processing data are subjected to time sequence alignment according to process stages; a three-dimensional mass space model with the process stage as the horizontal axis, the key quality features as the longitudinal axis and the multi-source machining data as the depth axis is constructed, and a mass distribution thermodynamic diagram is generated; identifying an abnormal process region based on the thermodynamic diagram, extracting a corresponding data subset, inputting the data subset into the dynamic convolution kernel quality analysis network, and outputting a process abnormal probability value; when the probability value exceeds a threshold value, triggering cross-process correlation analysis, and fusing upstream and downstream process data to generate a composite quality feature vector; and an abnormal type is judged through a cascade classifier, and a compensation strategy library is called to generate a machining parameter adjustment instruction set.
Owner:CHENGDU SEN BO PRECISION MASCH CO LTD

Automated storage tower with carousel

A storage tower for storing storage containers includes a vertically extending supporting structure having a vertical axis, and m horizontally oriented container supports arranged along the vertical axis of the supporting structure and supported by container supporting frameworks to provide different levels where storage containers can be stored. The container supports are distributed at vertical intervals and m is a positive integer of 2 or more. Each container support is rotationally connected to the support structure and configured to support at least one storage container. Each level of the l container supports that are arranged above the remaining levels of m−l container supports each displays at least one opening having a size being at least a maximum horizontal cross section of the storage containers to be stored, l being a positive integer of 1 to m−1. The l container supports can be rotated about the vertical axis independently such that at least one opening of each level of the l container supports is vertically alignable with at least one opening of the other levels of the l container supports by individual rotation of the container supports.
Owner:AUTOSTORE TECH AS

Bumper arrangement for a motor vehicle

A bumper arrangement for a motor vehicle, having an upper main crossmember, which is able to be coupled to the motor vehicle by way of crash boxes, and a lower auxiliary crossmember, wherein main crossmember and auxiliary crossmember are coupled to one another by way of vertical struts. The main crossmember and the auxiliary crossmember run so as to be curved about the vertical axis at least in certain portions, wherein main crossmember and auxiliary crossmember have different radii of curvature from one another, and / or in that the auxiliary crossmember is set back with respect to the main crossmember in a motor vehicle longitudinal direction in the direction directed toward the motor vehicle, and / or in that the auxiliary crossmember has a central portion which is offset in relation to the vertical direction.
Owner:BENTELER AUTOMOBILTECHNIK GMBH

High-precision digital slice Z-axis light path system based on rotary imaging

The utility model discloses a high-precision digital slice Z-axis light path system based on rotary imaging, which comprises a vertical plate, and a camera, a barrel lens, a fluorescent mechanism, a panorama camera, a lifting lens and a whole set of light source are sequentially arranged on the same side of the vertical plate in the vertical axis direction to form a Z-axis light path; the barrel lens is arranged on the side wall of the upper part of the vertical plate, and the upper end part of the barrel lens is connected with a camera; the fluorescent mechanism is arranged on the side wall of the middle part of the vertical plate, the fluorescent mechanism directly faces the lower end part of the barrel lens, and the panoramic camera is arranged on the side part of the fluorescent mechanism; the lifting lens and the whole set of light source are sequentially arranged on the side wall of the lower part of the vertical plate; wherein the fluorescent mechanism comprises a rotatable rotating disc, a plurality of fluorescent assemblies are arranged on the rotating disc, and the rotating path of the rotating disc sequentially passes through the lower end portion of the barrel lens.
Owner:WUHAN VITAL INTELLIGENCE TECH CO LTD

Organic matter processing apparatus and methods of use thereof

Embodiments disclosed herein provide an organic matter processing apparatus and method for the use thereof to convert organic matter into a ground and substantially dried product. The apparatus uses a bucket assembly that can grind, paddle, and heat organic matter contained therein. The bucket assembly can include a metal housing that has a flat bottom surface with multiple support structures that hold respective impeller assemblies that rotate about respective vertical axes. The impeller assemblies each include cutting structures and other structures designed to mix and agitate matter contained in the bucket assembly. One or more blade arrays can be mounted in a vertical orientation on a side of the metal housing plate and assist in fracture cutting and grinding of contents contained in the bucket.
Owner:CHEWIE LABS INC

Shading apparatus with panels

A shading apparatus with panels, such as, for example solar panels, connected to a spindle assembly rotatable about a vertical axis. Two or more panels are arranged in a series and connected to the spindle assembly and each panel is rotatable on a horizontal-longitudinal axis and form an array configured to provide a shade canopy. Certain embodiments include a payload area, such as, for example, a seating platform which may be either affixed or releasably attachable to the spindle assembly and / or central pole and rotatable about the vertical axis as a carousel.
Owner:SUNCATCHER LLC

Optically transparent microwave absorber for stealth applications

A transparent wideband microwave absorber unit cell, a transparent wideband microwave absorber and a method of forming a transparent wideband microwave absorber, include a metal substrate, a first layer of glass attached to the metal substrate and having a first pattern of indium tin oxide (ITO) configured as a square loop centered about a central vertical axis and a second pattern of ITO including four equidistant square patches, a second layer of glass attached to the first layer of glass and having a third pattern of ITO configured as a dipole having a cross shape with a center axis coaxial with the central vertical axis, and a third layer of glass attached to the second layer of glass and having a fourth pattern of ITO configured as five circular patches, with a first circular patch located coaxially with the central vertical axis and four equidistant circular patches.
Owner:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Operation control method and device for vertical axis wind turbine generator

The invention discloses an operation control method and device for a vertical axis wind turbine generator, and belongs to the technical field of wind power generation. The method comprises the steps that a pitch angle of a lower blade is driven to be gradually increased to a preset angle at a preset angular speed through a variable pitch controller; when the rotating speed of the wind wheel reaches the cut-in rotating speed, the optimal tip speed ratio is tracked until the rotating speed of the wind wheel rises to the rated rotating speed; when the rotating speed of the wind wheel reaches the rated rotating speed, the rotating speed of the wind wheel is stabilized at the rated rotating speed; when the driving torque under the action of the aerodynamic load continuously exceeds the rated torque of the generator and the rotating speed of the generator reaches an early-warning rotating speed threshold value, a shutdown control strategy is triggered; and under the shutdown control strategy, the connection between the generator and the power grid is cut off, and mechanical braking is applied, so that the wind wheel stops rotating. According to the technical scheme, smooth starting of the wind wheel, stable operation at the rated rotating speed and safe shutdown in the fault state are achieved, the starting and stopping capacity and power stability of the unit are effectively improved, the wind speed application range is expanded, and it is guaranteed that the whole-process operation of the unit is safe and reliable.
Owner:中国船舶集团风电发展有限公司

Steel plate floor support plate and implementation method

The invention discloses a steel plate floor support plate and an implementation method, and aims at solving the problems that a traditional floor support plate is insufficient in rigidity and strength, large in steel consumption, complex in construction, low in material utilization rate and the like. The floor support plate comprises a wide upper flange (the minimum width is larger than or equal to 30 mm), a wave-shaped reinforcing steel bar web member, a lower chord reinforcing steel bar and a profiling thin-bottom steel plate, the wide upper flange is of a combined type or thin steel plate type or trapezoidal steel pipe structure, and a side plate forming an inclination angle with a vertical shaft enhances the out-of-plane stability; the inclination angles of the steel bar web members are consistent with those of longitudinal ribs (trapezoidal ribs, closed inverted triangular ribs and the like) of the upper flange side plates and the profiled thin-bottom steel plates, so that line-surface contact welding is realized; the profiled thin-bottom steel plate is provided with longitudinal ribs and transverse ribs, so that the overall rigidity is improved; the lower chord steel bar adopts a double-layer design to strengthen node stress. According to the implementation method, industrial production is achieved through cold roll forming, automatic resistance welding and other processes. A traditional triangular truss is optimized into a trapezoid and four-side box type space structure, the bending rigidity is remarkably improved (the inertia distance between the upper flange and the profiling thin bottom steel plate is increased by 40% or above), the steel consumption is reduced by about 30%, the connection reliability is enhanced, meanwhile, the concrete consumption is reduced, the construction process is simplified, and the structure is suitable for various building scenes such as large span and heavy load.
Owner:WUXI LEI CONCRETE ENG TECH CO LTD

Cradle head dynamic control method and device

The invention discloses a cradle head dynamic control method and device, and the method comprises the steps: obtaining a two-dimensional pixel coordinate of a target object on a display plane, converting the two-dimensional pixel coordinate into a physical space coordinate through a coordinate conversion algorithm, and obtaining the pixel offset of the target object relative to the center of a cradle head; based on the pixel offset and the pixel density parameter, performing angle calculation by using a trigonometric function calculation module to obtain rotation angle parameters required by the horizontal axis and the vertical axis of the holder; pWM control signal conversion is carried out on the rotation angle parameter, a corresponding number of pulse waveforms are generated through a stepping motor driving module, and a holder double-shaft motor is controlled to rotate; and based on the deviation value between the current position of the holder and the target angle, real-time error correction is performed by adopting a PID control algorithm, so that the holder tracks the target object in real time and keeps pointing to the position of the target object. Through the solid geometry correction technology, the problems of precise positioning and dynamic tracking of a traditional pan-tilt control system in a complex scene are solved, and the precision and stability of pan-tilt control are improved.
Owner:BEIJING ETERNAL CREATIVE TECH CO LTD

Embryo transfer device and warmer

ActiveCN117962281BEmbryo transferBottle
The present application relates to the technical field of warming machine, disclose a kind of embryo inserting device and warming machine.Warming machine includes embryo inserting device and rack, embryo inserting device includes rotating mechanism and several bottom supporting mechanisms, rotating mechanism can be rotated relative to rack around vertical axis, rotating mechanism is provided with several first matching parts along the circumference, and the first matching part is used to limit the upper end of bottle embryo;Several bottom supporting mechanisms are connected with rotating mechanism and are correspondingly arranged below several first matching parts, and bottom supporting mechanism can move upward along vertical direction at preset time, to lift and guide the lower end of bottle embryo located at corresponding first matching part.The warming machine of the present application can ensure that the bottle embryo clamping mechanism is accurately inserted and grasped by setting the above-mentioned embryo inserting device, and improve the yield of bottle embryo processing.
Owner:GUANGZHOU TECH LONG PACKAGING MACHINERY CO LTD

Firefighting mist turbine, firefighting mist turbine assembly and method for the application of firefighting agent

The invention relates to a firefighting mist cannon (1) having a firefighting agent connection (20) for connecting to a pressurized firefighting agent supply, a housing (7) that can be pivoted about a vertical axis (Z) and a horizontal axis (Y) relative to the firefighting agent connection (20) and having a first, inlet-side housing opening (19) and a second, outlet-side housing opening (22), a flow generator arranged in the housing (7), which is designed to provide an air flow (L) from the first housing opening (19) in the direction of the second housing opening (22), and a firefighting nozzle arrangement (25) associated to the second housing opening (22), fluidically connected to the firefighting agent connection (20) and designed to output firefighting agent in such a way that the firefighting agent is captured by the air flow (L). It is proposed for the firefighting nozzle arrangement (25) to have at least one central tube (27), which is arranged within the housing (7) and oriented in an output direction (W), and which is fluidically connected to a horizontally and vertically pivotable distributor device (37) by means of a supply line section (44), wherein the supply line section (44) is designed with a harmonic curvature.
Owner:MINIMAX VIKING RES & DEV GMBH +1

Gate systems and methods for rotating loading platform

Present embodiments are directed to a gate system for an amusement park attraction. The gate system includes a loading platform configured to rotate about a central vertical axis of the loading platform, and a gate positioned on the loading platform. The gate is configured to transition between a closed position and an open position. A gate actuation system is coupled to the loading platform and is configured to actuate the gate between the closed position and the open position based on feedback indicative of a position of a ride vehicle relative to the gate.
Owner:UNIVERSAL CITY STUDIOS LLC

Historical building operation and maintenance management method and system based on digital twinning

The invention relates to the technical field of operation and maintenance management, and discloses a historical building operation and maintenance management method and system based on digital twinning, and the method comprises the steps: building a digital substrate based on historical data and point cloud, dividing a monitoring region according to a bearing structure, value elements and a function space, and associating an identifier. And mapping the operation data to a corresponding component storage space according to the area to which the operation data belongs, and forming a dynamic operation and maintenance file and a monitoring data stream. And performing visual coding on the data stream by taking the acquisition time as a horizontal axis and the spatial topology as a longitudinal axis to generate a spatial-temporal distribution map. And determining an abnormal area according to fluctuation form difference and trend deviation degree of real-time and historical data in the map, and binding identifiers and time periods to generate an abnormal list. Updating the file by taking the list as an index, and matching the disease record with a historical maintenance record to generate an operation and maintenance management scheme; the efficiency of historical building operation and maintenance management based on digital twinning can be improved.
Owner:LONGYAN UNIV

Electro-hydraulic control underground angle-adjustable device

The invention discloses an electro-hydraulic control underground adjustable angle device and an adjusting method thereof. A translation assembly and a rotating assembly in a shell assembly are sequentially arranged from outside to inside, a sliding sleeve of the translation assembly slides in the axial direction of a shell of the shell assembly, and a spiral rod of the rotating assembly is matched with the sliding sleeve through a spiral key to achieve rotating movement and axial movement of the spiral rod; the lower end of the rotating assembly is meshed with the rotating joint assembly through a spherical gear to realize rotation of a rotating joint; the lower end of the shell is connected with the rotary connector through a gear ring, and the included angle between the axis of the gear ring and the vertical axis of the shell is larger than 0 degree. The device has the advantages of being simple in structure, convenient to operate, reliable in performance and high in structure bending angle adjustment control precision; the bend angle is adjusted underground, the requirement for track control of a well with a complex structure is met, and the purpose of completing drilling track control of the well with the complex structure with low cost, high efficiency and high precision is achieved.
Owner:CHINA NAT PETROLEUM CORP +1

Automatic high precision battery material assessment system

Apparatus and associated methods relate to evaluating impurity content in battery materials. In an illustrative example, a battery material impurity assessment system (BMIAS) may include a slurry mixing system and an impurity extraction system (IES). The slurry mixing system, for example, may include a motor configured to rotate a vertical axis of a slurry container. For example, the motor may pause a movement of the slurry container when the vertical axis is rotated at a predetermined angle. For example, the IES may include a translatable magnetic mass (TMM) enclosed within a sheath. For example, by operating a position of the TMM, the IES may release non-target impurity and retain target substances. In some implementations, the target substance may be ionized by an acid treatment solution rapidly without direct heating. In some implementations, the target substances may be dispersed on a conductive filter to be directly used in subsequent analysis. Various embodiments may advantageously rapid high precision and rapid impurity testing for battery manufacturing.
Owner:MAG IA INC

Fan

A fan includes a vertically oriented body positioned between a base and a top housing. The body is configured to rotate or oscillate about a vertical axis while the base and top housing remain stationary. A connecting member is secured between the base and the top housing and positioned rearward of the body. The connecting member houses a rearward-facing light source configured to emit ambient light. The base of the fan also includes an upward-facing light source positioned encircling the body to provide 360-degree radial illumination. An oscillation mechanism is housed within the base and includes a motor-driven gear assembly that imparts horizontal oscillatory movement to the body. Lighting elements on the base and connecting member are controllable via a user interface or wireless communication module to produce customizable lighting effects including color and brightness.
Owner:VORNADO AIR LLC

Glazed device for a vehicle door, comprising a flush-fitted movable panel, and corresponding door

The invention relates to a glazed device intended to be mounted on an inner door shell to form a motor vehicle door or on a bodywork element, comprising a glazed fixed part and a mobile glazed panel that can slide relative to said fixed part along a substantially vertical axis, and can selectively at least partially cover or uncover an opening in said fixed part, said fixed panel being guided along rails supported by said fixed part. Said rails are secured to said fixed part along the side edges by a bead of glue, and a frame, which extends at least on the side edges and the upper edge of said opening, is secured to the rails for its side edges and is glued to said fixed part by means of said bead of glue, for its upper edge.
Owner:ADVANCED COMFORT SYST FRANCE ACS

Front engine attachment system intended for an aircraft engine and having a compact structure

A system for attaching a front engine of an aircraft, having: a vertical median plane, an engine pylon with a nose having a main female clevis, and a cylindrical housing around a vertical axis, a main link fastened to a front casing of the engine by a secondary ball-joint connection about a secondary axis perpendicular to the median plane by a secondary shaft, a main shaft, perpendicular to the median plane and forming a main ball-joint connection of the main link in the main female clevis about a main axis, the main and secondary axes in the plane perpendicular to the median plane, and an outer cylinder, coaxial with the vertical axis and a first end of which fastened in the cylindrical housing and a second end of which mounted, via an annular linear connection, around the vertical axis with respect to the front casing.
Owner:AIRBUS OPERATIONS (SAS)

A vertical axis wind power generation fan blade and a vertical axis wind power generation device

The present invention discloses a vertical-axis wind turbine blade and a vertical-axis wind turbine generator device, primarily comprising a frame and a fan. The fan is disposed within the frame and includes a fixed fan and a movable fan. Several fixed fans are spaced apart from several movable fans, and the movable fan can rotate through an angle of 0-90 degrees. This application addresses the challenges of large-scale wind turbines, including difficult transportation, installation, maintenance, and high costs. It can be used in any terrain, regardless of topography, as long as there is sufficient wind power, while also achieving dual carbon emission reductions.
Owner:BLUE GRANARY MARINE ENG EQUIP (SHENZHEN) CO LTD

Multi-partition variable pitch control strategy for floating vertical axis wind turbine

The invention relates to the field of wind driven generators, and particularly discloses a floating type vertical axis wind turbine multi-partition variable pitch control strategy which comprises the steps that S1, basic parameters and operating condition parameters of a unit are obtained; s2, establishing an aerodynamic model based on a double-disk multi-flow management theory and a superposition wind speed method; s3, measuring parameters through a sensor, and calculating a theoretical attack angle of the blade; s4, establishing a multi-partition pitch angle change function based on the theoretical attack angle; s5, constructing an NSGA-II multi-target optimization model, and taking maximization of an average power coefficient and minimization of a blade thrust standard deviation as targets; s6, substituting a function to obtain an optimal variable pitch control factor and an optimal pitch angle; and S7, the optimal pitch angle is converted into a variable pitch actuator instruction. The problems that an existing strategy is limited in partition, the wind direction influence is ignored, and optimal parameters for working condition adaptation are lacked are solved, the wind energy capture efficiency is improved, the load fluctuation is reduced, and the variable pitch control accuracy is improved.
Owner:FUZHOU UNIV

Gas chromatography sampling device and gas chromatograph

The invention discloses a gas chromatography sampling device and a gas chromatograph, and relates to the technical field of gas chromatographs. The gas chromatography sampling device comprises a supporting frame and further comprises a main lifting device which is fixedly installed on the supporting frame, the telescopic end of the main lifting device is fixedly connected with a supporting column, a rotating disc is rotatably installed on the outer wall of the supporting column, three sets of syringes which are distributed circumferentially are rotatably installed on the rotating disc, and the three sets of syringes are connected with the main lifting device. A switching part for driving the turntable to rotate is arranged on the supporting column; the sample disc is rotationally mounted on the supporting frame through a first vertical shaft, a disc is rotationally mounted on the supporting frame through a second vertical shaft, and a plurality of circular holes are circumferentially distributed in the disc; by means of the sample feeding device, alternate sample feeding work of a plurality of samples can be rapidly achieved, the sample feeding and detecting efficiency of the samples is remarkably improved, the rubber pads used each time in the detecting process can be replaced, and the detecting efficiency and accuracy of the samples are guaranteed.
Owner:ZHONGKE ASMAI (JIANGSU) INSPECTION & TESTING CO LTD

Method for calculating aerodynamic characteristics of vertical axis wind turbine

The invention discloses a method for calculating aerodynamic characteristics of a vertical axis wind turbine. The method comprises the following steps: establishing a computational fluid mechanics model and a free vortex wake model and forming interaction, segmenting a blade and establishing a two-dimensional local area, and initializing flow field and vortex wake parameters; calculating an induced flow velocity sum of each vortex element in the center of a local area, and loading the induced flow velocity sum and a far-field incoming flow velocity to a boundary node; the airfoil action is equivalent to point vortex and dipole flow at the circle center, and induced velocities of the point vortex and the dipole flow at boundary nodes are loaded; carrying out fluid mechanics parameter calculation on the flow in each two-dimensional local area; integrating the airfoil surface pressure to obtain a lift force, and calculating a circular rector to update the point vortex intensity; the dipole flow intensity is calculated and updated through the flow velocities of the three specific observation points. The method for calculating the aerodynamic characteristics of the vertical axis wind turbine is high in calculation efficiency and reliable in precision, the aerodynamic characteristics of the vertical axis wind turbine are accurately obtained with small calculation amount, and powerful support is provided for structural design and optimization of the vertical axis wind turbine.
Owner:SHENGZHOU SHAODA MECHANICAL & ELECTRICAL INNOVATION RESEARCH INSTITUTE +1