30 results about "Convergence zone" patented technology

A droplet forming flow cytometer system allows high speed processing without the need for high oscillator drive powers through the inclusion of an oscillator or piezoelectric crystal within the nozzle volume and directly coupled to the sheath fluid. The nozzle contain converges so as to amplify unidirectional oscillations which are transmitted as pressure waves through the nozzle volume to the nozzle exit so as to form droplets from the fluid jet. The oscillator is directionally isolated so as to avoid moving the entire nozzle container so as to create only pressure waves within the sheath fluid. A variation in substance concentration is achieved through a movable substance introduction port which is positioned within a convergence zone to vary the relative concentration of substance to sheath fluid while still maintaining optimal laminar flow conditions. This variation may be automatically controlled through a sensor and controller configuration. A replaceable tip design is also provided whereby the ceramic nozzle tip is positioned within an edge insert in the mozzle body so as to smoothly transition from nozzle body to nozzle tip. The nozzle tip is sealed against its outer surface to the nozzle body so it may be removable for cleaning or replacement.

The invention relates to a power distribution network harmonic impedance calculating method based on canonical correlation analysis. Firstly, a bus voltage instantaneous value at a common connection spot PCC portion where a power grid is connected to a user and an instantaneous value of the current injected by the user into the grid are collected, and a harmonic voltage and a harmonic current canbe obtained through the Fourier transform; then, a fluctuation amount is obtained by using a slip method; the collected harmonic voltage and harmonic current are subjected to slip processing to obtaina harmonic voltage fluctuation amount delta dotted Vpcc and a harmonic current fluctuation amount delta dotted Ipcc; calculating an impedance sample Zpcc; setting the correlation to analyze the convergence condition of the two convergence zones and classifying the impedance sample according to the magnitude of the fundamental current fluctuation at the PCC portion; finally filtering the impedancesamples and using the canonical correlation analysis method to obtain the correlation coefficients of the harmonic voltage fluctuation amount and harmonic current fluctuation amount using canonical correlation analysis method; and according to the size of the correlation coefficients and the judgment conditions, excluding the linearly uncorrelated points, the harmonic impedance on the grid side and the harmonic impedance on the user side can be obtained and the harmonic impedance value can be more accurately estimated.

A fan nozzle for cleaning a surface with an abrasive blast media is constructed of a longitudinal body having an axial pathway through which the media is passed under pressure for release from a substantially rectangular cross-sectional outlet to release the media in a substantially flat, wide path. A first transition zone provides a conversion in the axial pathway from the inlet cross-section to the substantially rectangular cross-section of the outlet opening. A second transition or convergence zone first reduces and then expands the cross-section of the axial pathway for providing a Venturii acceleration of the media as it passes through the nozzle. The transition zone and the convergence zone may be coexistent along a portion of the axial pathway.

The invention relates to a liquid-cooled motor shell, which comprises an inner shell and an outer shell, wherein the outer shell sleeves the outside of the inner shell; the outer shell is provided with a water inlet and a water outlet; an inlet part runner convergence zone and an outlet part runner convergence zone are arranged at the positions, corresponding to the water inlet and the water outlet, of the inner shell respectively; a runner turning convergence zone is arranged on the inner shell for dispersing and converging a cooling liquid; multiple rows of isolating ribs are arranged on the inner shell for controlling the flow direction; sawtooth fins are arranged at two sides of the inlet part runner convergence zone, the outlet part runner convergence zone and the runner turning convergence zone and between the inner shell and the outer shell, and are arranged on the inner shell or the outer shell; and the sawtooth fins are multiple rows of individual fins. By the liquid-cooled motor shell, turbulent flow can be strengthened and the thermal resistance and a temperature rise of the motor shell are obviously reduced.

The invention provides a multi-segment focusing lens for effective laser processing method that allows to cut/scribe/cleave/dice or, generally speaking, separate, hard, brittle, and solid wafers or glass sheets, which are either bare or have microelectronic or MEMS devices formed on them.

The multi-segment focusing lens is used in a laser processing method comprises a step of modifying a pulsed laser beam by a shaping and focusing unit, including a multi-segment lens. Said multi-segment lens creates multiple beam convergence zones, more particularly, multiple focal points, said and interference spike shape intensity distribution exceeding the optical damage threshold of the workpiece material. Said interference spike shape intensity distribution is situated in the bulk of the workpiece. During the aforementioned step a modified area is created. The laser processing method further comprises a step of creating a number of such damage structures in a predetermined breaking line or curved trajectory by relative translation of the workpiece in relation to the focal point of the laser beam.

The invention provides a multi-carrier underwater acoustic communication method applied to a deep-sea channel, related to the field of underwater acoustic communication. According to the invention, atwo-path channel model which is transmitted in a convergence zone is established through calculating parameters such as the amplitude attenuation coefficient caused by wave surface extension and the amplitude attenuation coefficient caused by acoustic absorption when the acoustic wave is propagated in the ocean, and a two-path channel model is established for transmission in a convergence zone andis used for communication simulation; the two-path model of the deep-sea underwater acoustic channel established by the invention not only simplifies the channel model, but also truly reflects the characteristics of the underwater acoustic channel; through performing MC-DS-CDMA system simulation, the experimental results are shown in the harsh underwater acoustic channel environment; the systemhas good characteristics and can realize more stable communication; the transmission efficiency of the system is high, and the bit error rate meets the needs of practical engineering application, therefore, the system can be applied in practice.

The invention discloses a strong convergence field recognition and speed correction method based on Doppler weather radar data, and the method comprises the following steps: designing a new coordinatesystem, converting radially distributed radar data into grid point data, and completing the extraction of a high-reflectivity area; designing a detection template, and obtaining a parameter vector for describing the convergence intensity and position of a convergence point on the basis that the convergence point is located quickly; extracting a slave convergence point to generate a convergence zone, and correcting the idea and algorithm of the convergence intensity through the direction of the convergence zone, thereby effectively solving a problem of the underestimating of the strong convergence field at a single pitch angle and even the detection leakage; determining a profile line according to the strongest convergence point at the single pitch angle, obtaining the better section of the strong convergence field, and obtaining the depth information of the strong convergence field. The method can achieve the automatic detection of the strong convergence field, solves the problems ofunderestimation and detection leakage to a certain degree through a speed correction method, achieves the automatic drawing of the section map of the strong convergence field, achieves the calculationof the feature parameter of the strong convergence field, and promotes the recognition and forecast of the convective weather disasters.

The present application concerns a module for a device generating at least one water curtain aimed at confining an area of space or for a cooling tower, including at least one water supply, at least one convergence zone mounted downstream of the holding zone, and at least one nozzle mounted downstream of the convergence zone and made of two parallel walls in equal length to the module and separated by a distance defining the thickness of the water curtain. The application also concerns a device generating at least one water curtain including a module previously defined.

A nozzle is capable of producing a mixing of two primitive fluid jets and a selective and controllable angular deviation of the synthetic jet obtained by mixing the primitive jets without any moving mechanical part. The nozzle is also capable of generating a controllable deviation of the synthetic jet and of changing the direction of this jet in a continuous and dynamic manner so as to allow the jet to sweep a preset and arbitrary angle. The nozzle is constituted, in a first part thereof, by a conduit divided into two channels by a central baffle and, in a second part thereof, by a convergence zone and an outflow mouth whose walls have a curvilinear profile and are connected seamlessly to the walls of the conduit.

The present application discloses a module for a device generating at least one water curtain aimed at confining an area of space or for a cooling tower, including at least one water supply, at least one convergence zone mounted downstream of the holding zone and at least one nozzle mounted downstream of the convergence zone and made of two parallel walls in equal length to the module and separated by a distance defining the thickness of the water curtain. The application also concerns a device generating at least one water curtain including a module previously defined.

The invention discloses a Baidu map based water flow situation display method. According to the method, firstly, access is performed by using a Web browser on a system back-end management platform; a 'city switching' button is set to rapidly replace city information corresponding to a current map view; secondly, two modes for displaying a water flow situation range are set; then, the number of water flow situation records within a certain convergence zone is displayed at the current level in a map zooming mode; finally, specific situation information and summary information of all recent water flow situation records within the current zone are displayed on a page, and water flow situation values reaching or exceeding the preset danger level are marked with red in a table and are marked with different colors on a map. The Baidu map based water flow situation display method can obtain the given range in a real-time water flow situation information table and the water flow situation information within a given time and uses round markers corresponding to colors to perform visual display on pages according to situation level values.

The invention relates to an inoculation device, provides an inoculation method realized by the aid of the device simultaneously, and belongs to the technical field of pesticide biological assay for plant protection. The device comprises a vertical cylindrical tower, wherein a lifting mesh cage is suspended in the center of the top of the tower; at least three upwards inclined pneumatic nozzles are uniformly and circumferentially distributed on the side wall of the lower part of the tower; spraying spread angles of the pneumatic nozzles form an airflow convergence zone which can contain the mesh cage; and a drawer is mounted at the bottom of the tower. According to the device, conidial powder can be blown and separated from attacked leaves once by the aid of vertical airflow, separated conidial powder is floated uniformly, rotation cannot be caused when the conidial powder is blown, and obstruction is free when the conidial powder falls, so that the conidial powder can uniformly fall and spread on a host plant sample plate with a larger area, and biological assay and assessment with high identity and repeatability are realized.

A fan nozzle for cleaning a surface with an abrasive blast media is constructed of a longitudinal body having an axial pathway through which the media is passed under pressure for release from a substantially rectangular cross-sectional outlet to release the media in a substantially flat, wide path. A first transition zone provides a conversion in the axial pathway from the inlet cross-section to the substantially rectangular cross-section of the outlet opening. A second transition or convergence zone first reduces and then expands the cross-section of the axial pathway for providing a Venturii acceleration of the media as it passes through the nozzle. The transition zone and the convergence zone may be coexistent along a portion of the axial pathway.

The present invention relates to an organic luminous display. It includes several picture elements and an exterior power line. The exterior power line is divided into several interior power lines in the convergence zone of picture element, and these interior power lines can be mutually separated, so that the electric current flowed through these interior power lines can be obviously reduced, therefore the power consumption of electric current on these interior power lines can be reduced. The organic luminous display can save electricity and reduce heat production of panel.