109 results about "Spray characteristics" patented technology

The invention discloses an agricultural unmanned gyroplane optimal working parameter testing device and method. The agricultural unmanned gyroplane optimal working parameter testing device comprises a gyroplane, a flight attitude console, a working altitude lifting platform, a pesticide spraying system, a wind speed flow field testing system and a spraying characteristic testing system, wherein the spraying characteristic testing system comprises a fogdrop flow field testing system, a fogdrop particle size measuring system and a spraying sedimentation testing system. According to the testing device and method, influences of single-rotor airplane structures, multi-rotor airplane structures, pesticide spraying parameters of pesticide application flow, pesticide application pressure, working altitudes and positions of spray nozzles relative to centers of airplane bodies, environmental influences of wind speed, wind direction, temperature and humidity and airplane attitude parameters of roll angles, pitching angles and yaw angles on fogdrop uniformity, wind speed flow field uniformity, fogdrop particle size distribution, other pesticide application effects and pesticide application efficiency can be provided comprehensively, systematically, synthetically and quantitatively, spraying characteristics of agricultural gyroplane spraying operation are tested, and optimal pesticide application combined parameters are researched.

The invention relates to a fire extinguishing system for energy storage units of lithium batteries. The fire extinguishing system mainly comprises an automatic fire alarm system, a gas fire extinguishing system, a fire extinguishing linkage control device, a fire emergent broadcasting and fire extinguishing special telephone device. Fire extinguishing devices of the fire extinguishing system can be automatically or manually started, the automatic starting is triggered mainly by a fire alarm control unit, the fire alarm control unit can receive triggering signals input by a battery management system and a detection alarm, when fire alarm conditions are met, starting signals are output to a gas fire extinguishing controller, and a fire extinguishing device is started to spray a fire extinguishing agent to the energy storage units; when an operator finds fire behavior in a protective zone, a start button outside the protective zone or on the gas fire extinguishing controller can be manually pressed down, and the manual operation of the fire extinguishment system is realized. Specific to multiple fire spraying characteristics of the lithium batteries, the two sets of fire extinguishing devices of the fire extinguishing system share one fire extinguishing cabinet, and the fire extinguishment protection of the two energy storage units of the lithium batteries is realized. The two sets of fire extinguishing devices are independent of each other and spare to each other, and the whole fire extinguishing system has a secondary fire extinguishment function.

The invention discloses a spray characteristic parameter detection device and method. The spray characteristic parameter detection device comprises an integral support rack, a two-dimensional moving unit, a servo motor, a servo control unit, a spray control system, a pulse nozzle, a high-speed camera image acquisition system and a laser particle size analyzer system. On the basis of the device, the spray characteristic parameter detection method comprises the following steps: detecting an outline shape of spray, macroscopic two-dimensional distribution of spray and the flying speed of particles of spray by virtue of the high-speed camera image acquisition system; and detecting the particle size of spray with two-dimensional distribution in a spatial two-dimensional plane travel range by a two-dimensional precise servo driving system based on a laser particle size analyzer according to the outline and the macroscopic two-dimensional distribution of spray on the basis of a spray image acquisition result.

The invention belongs to the technical field of automatic agricultural equipment, and particularly relates to a flexibly operable hand-eye mode spraying robot device which comprises a spray nozzle, a camera, a large mechanical arm, a small mechanical arm, a manipulator, a controller, a power source and a variable spray system. The flexibly operable hand-eye mode spraying robot device is arranged on a mobile platform; a hand-eye mode is formed by the camera arranged on the manipulator; contour recognition and detection of a spray operation object are realized by controlling movement of the camera; a spray strategy is formulated by the controller by combining the spray characteristic according to detected plant contour information; the spray nozzle is driven by a rotary pedestal, the large mechanical arm, the small mechanical arm and the manipulator; and accurate spray operation is realized under the control of the variable spray system. According to the flexibly operable hand-eye mode spraying robot device, the manual labor strength can be reduced, accurate spray operation is realized according to plant information, the using amount of a pesticide is reduced, the drift is reduced, the utilization rate of liquor is increased, the environment is protected, the health of laborers and consumers is protected, and sustainable development of agricultural production is realized.

A fuel nozzle and gas turbine combustor capable of operating on multiple fuels with reduced carbon build-up to the fuel nozzle and adjacent combustor components is disclosed. The fuel nozzle incorporates a reconfigured gas fuel assembly and mixing tube to eliminate known areas of recirculation. Furthermore, the liquid fuel assembly includes reconfigured spray characteristics to further reduce droplet interaction with the mixing tube.

An oscillating spray device comprising an oscillation chamber. A power nozzle for projecting a jet of liquid under pressure into the oscillation chamber in a given direction. A reversing member in the chamber has a reversing wall for reversing the direction of flow of the fluid jet in a direction 180° opposite the given direction. A system of vortices is formed thereby for alternately passing fluid to one side or the other of the reversing member. A pair of passages, one on each side of the reversing member, convey alternate pulses of fluid through the passageways in the given direction past the reversing member to an outlet to ambient, and an island barrier positioned in the outlet to ambient and forming two separate passageways to the outlet and a third passageway between the reversing member and the island barrier. The spray characteristics can be adjusted by changing the spacing between the reversing member and island barrier.

The invention discloses grease specially used for a heavy-load open-type gear and a preparation method. The grease of the invention comprises the following raw materials by weight percentage: 1-2% of MDI (diphenylmethane-4,4'-diisocyanate), 0.2-1% of octadecylamine, 0.5-2% of cyclohexylamine, 35-50% of base oil A, 30-45% of base oil B, 0.5-1.0% of anti-oxidant A, 1.5-3.0% of anti-oxidant B, 0.5% of antirust agent, 0.5-1.5% of extreme pressure antiwear additive A, 4-8% of extreme pressure antiwear additive B, 2-5% of oiliness agent A, 0.1-0.3% of oiliness agent B, 10-15% of adhesive compound and 4-8% of solid lubricant. Various raw materials are stirred and mixed under certain sequence according to different temperature while preparing, the grease of the present invention has ultra-strong extreme pressure and antiwear property, and excellent adhesiveness, anticorrosion and antirust performance, good anti-oxidizability and water resistance performance and spray characteristic, and has good adaptability with routine seal elements. The grease has no heavy metal lead or a volatile solvent, and belongs to the energy saving and environment-friendly product.

The invention relates to a coating device for researching vacuum spraying characteristics. The front end of a vacuum spraying chamber composed of a quartz glass tube is connected with a vacuum door provided with a compound vacuum gauge and various lead flanges, and the rear end of the vacuum spraying chamber is connected with an air extraction device by virtue of an air release valve CF (conflat) flange; two atomizing nozzles adopt two-fluid-induction-charging pneumatic-type nozzles, and a nozzle flapper provided with a lifting device is arranged in front of each atomizing nozzle; a fluid delivery device and a high-pressure nitrogen delivery device which are composed of four beakers and two HPLC (high performance liquid chromatography) pumps are arranged in two paths to be respectively connected with each atomizing nozzles; an external electromagnet is used for controlling the operations of moving, taking out and putting in a substrate in the spraying chamber; an infrared heating tube and a silicon rubber heater are used for heating; and a testing device is composed of a transmitting light source, a CCD (charge coupled discharge) high-speed camera, a PC (personal computer) machine and a temperature detection device. The coating device disclosed by the invention has a simple structure, is easy to operate, good in intuitiveness and low in cost, and can be used for performing tests and comprehensive research on the various characteristics of vacuum spraying and also for preparing a multi-substrate polymer function gradient film and laminated film in different concentration ratios.

The invention discloses a spray character test method and device of continuous casting two-cold-sprayer, which comprise the following steps: 1. the moving sprayer sprays water through the water-spray quality sensor and water-spray bunch pressure sensor on the downward moving gathering point; 2. the water-spray quality sensor and water-spray bunch pressure sensor transmits the real-time gathered spray quantity and increment and spray bunch pressure value to the computer; 3. the computer calculates the flow density value and bunch pressure value according to the setting parameter and program, which generates the distribution graph of spray flow density and bunch pressure. The entire course can be controlled by computer automatically, which improves the automatic degree greatly to finish the test by one person. The test result can be printed at the report pattern, which displays the distribution graph of spray flow density and bunch pressure.

Near-field spray characteristics are established from local measurements which are acquired by data acquisition sub-system capable of complete scanning of the area (volume) of interest in the spray which uses different laser-based probes (shadowgraphy, PIV, diffraction) to obtain drops related measurements. A mechanical patternator measures volume flux distribution of the spray under study. The measurement data are post-processed to obtain spatially-resolved spray characteristics which are mapped in a spherical coordinate system consistent with the kinematics of the spray. A data compression scheme is used to generate compact analytical functions describing the nozzle spray based on the measurement data. These analytical functions may be useful for initiating the nozzle spray in computational fluid dynamics (CFD) based spray dispersion and fire suppression modeling.

The invention relates to a test device for measuring the spray characteristic of a local application nozzle of a carbon dioxide fire-extinguishing system. The test device comprises a hoisting weighing device, a driving gas cylinder group, a nozzle test interface, an adjustable oil tray, a video monitoring system, a data acquisition processing system and the like, wherein the hoisting weighing device is formed by combining an electric hoist and an electronic weighing platform scale effectively to measure and record the chemical weight of a carbon dioxide fire-extinguishing agent bottle group automatically; the installation height of the nozzle can be adjusted within the height range from 0.3 to 4 meters by an adjustable rack lifting frame, so the requirement of test height of an overhead type local application nozzle and a trough rim type local application nozzle which are specified by the standard is met; and the area of the oil tray can be adjusted within the range from 0.5 to 1 m<2>by the adjustable oil tray. The test device is convenient to operate, high in automaticity and high in measuring speed, improves work efficiency, reduces test cost and saves test space.

The invention discloses a high-speed gasoline engine instantaneous condition air-fuel ratio control method. The high-speed gasoline engine instantaneous condition air-fuel ratio control method comprises the following steps of acquiring gasoline engine instantaneous condition parameters, determining the key influence factors influencing instantaneous air-fuel control through multi-parameter sensitivity analysis, and building an intake air flow predication model; building a fuel oil dynamic flow model according to dynamic flow characteristics, spray characteristics and the evaporation rate of anoil atomizer; building an air-fuel ratio predication algorithm through the intake air flow predication model and the fuel oil dynamic flow model; correcting an intake air flow prediction model through an oxygen sensor feedback control algorithm; carrying out model training optimization to obtain instantaneous air-fuel ratio control strategy; calculating oil atomizer oil injection pulse width according to the set target air-fuel ratio, and using the oil injection pulse width as an oil injection instruction to carry out oil injection actions; and repeating the steps. With the high-speed gasoline engine instantaneous condition air-fuel ratio control method, variation trend of intake air flow can be predicated quickly and accurately on the high-speed gasoline engine instantaneous conditions,accurate control over the instantaneous air-fuel ratio is effectively achieved, emission is reduced, and the good dynamic property is guaranteed at the same time.

The purpose of the invention is to provide a method to characterize a spray pattern by detecting and quantifying asymmetries resulting in detailed information on location, size, and type of asymmetries within the spray pattern, which are important for spray characterization comparability and classification. A system is provided for in-situ monitoring of the spray characteristics.

The present technique provides a system and method for improving atomization in a spray coating device. An exemplary spray coating device of the present technique has a fine finish tip with an atomization section comprising a first fluid impingement orifice, i.e., a pre-orifice, angled toward an expansion chamber and a subsequent second fluid impingement orifice. The fine finish tip is provided as a unitary assembly that may be applied to a spray gun and that provides a fixed relationship between the pre-orifice, the expansion chamber, and the second orifice, which results in refined spray characteristics, such as uniform particle distribution and uniform fan pattern shapes.

The invention discloses an engine hole type oil nozzle single-hole extruding and grinding device and a use method. The engine hole type oil nozzle single-hole extruding and grinding device comprises an oil nozzle seat, an oil nozzle body and a shaft needle single-hole circulation rod sleeve which is arranged in the oil nozzle body and can rotate. A ball head at the bottom of the shaft needle single-hole circulation rod sleeve is provided with a rod sleeve spraying hole which can be communicated with any oil nozzle spraying hole after rotating, a sealing face is arranged between the ball head and the oil nozzle body, and the bottom of the oil nozzle seat is further connected with at least one working liquid box through a discharging electromagnetic valve. By means of the structure and the method, the shaft needle single-hole circulation rod sleeve can rotate and drive the rod sleeve spraying hole to rotate so that the rod sleeve spraying hole can be communicated with any oil nozzle spraying hole, and flow or spraying characteristic detection or uniformity evaluation or repairing operation can be conducted on any independent oil nozzle spraying hole. Due to the multiple working liquid boxes, the discharging electromagnetic valve and the like, fast switching of flow detection or grinding or cleaning operation can be achieved by directly controlling the actions of feeding and discharging electromagnetic valves.

A fuel injection valve includes a valve seat having a valve-seat portion on which a valve element is seated, and a nozzle plate disposed downstream from the valve seat and having a plurality of nozzle holes. A deformable member deforms with temperature to vary a space between the valve-seat portion of the valve seat and the nozzle plate, thus achieving change in spray characteristics.

A technique is provided for enhancing fluid flow in an outwardly opening nozzle assembly. A flow enhancement assembly is provided adjacent an exit from an outwardly opening poppet to provide desired spray characteristics. The flow enhancement assembly includes converging and diverging passages and a plurality of ports to form a spray.

The invention discloses a spraying characteristic analysis device and an analysis method based on the device. Key parameters for quantitatively evaluating the spraying condition of an SCR injection system can be accurately tested, and efficiency is high. The device comprises the SCR injection system, a laser emitter, a laser receiver, a camera and processors, wherein the processors include a signal processor and an image processor; laser emitted by the laser emitter is received by the laser receiver after being subjected to spraying of urea injected by a nozzle penetrating the SCR injection system; the signal processor is connected with the laser receiver and used for acquiring laser signals received by the laser receiver and processing the laser signals, and the urea spraying particle diameter and the distribution condition of the urea spraying particle diameter are acquired; the camera is connected with the image processor and used for acquiring urea spraying images at different time moments and transmitting the images to the image processor; the image processor is used for processing the images and acquiring the urea spraying penetration length and taper angle.

The invention discloses a constant volume chamber and an oil atomizer spraying visual test system with the same and belongs to the field of oil atomizer spraying characteristic tests. The constant volume chamber comprises a constant volume chamber body which is of a cube shape; the constant volume chamber body is internally provided with through-holes in three axial directions, and the through-holes are perpendicular and crossed, so that an internal cavity is formed; one mouth portion of one of the through-holes is provided with an oil atomizer module, and the other mouth portion of the corresponding through-hole and the mouth portions of the other through-holes are each provided with a visual window module; each visual window module comprises an outer end cover, an inner side cover plate and quartz glass located between the outer end cover and the inner side cover plate; the visual test system comprises the constant volume chamber, and the two opposite sides of the constant volume chamber body are provided with an ultraviolet lamp and a camera correspondingly; and a fluorescent agent which can shine under the irradiation of the ultraviolet lamp is added to the diesel oil in the constant volume chamber. By means of the constant volume chamber and the oil atomizer spraying visual test system with the constant volume chamber, the leakproofness of the constant volume chamber can be improved, and the problem that the subsequent oil beam outline is disturbed by a background light in a visual test can also be solved.