28 results about "Spray characteristics" patented technology

The invention discloses an accurate feeding system and method based on machine vision. The system comprises an image acquisition module, an image processing module, a satiation degree evaluation module, an automatic feeding machine and a control module. The image acquisition module is used for acquiring a water surface spray image of the fishpond in real time; the image processing module is in signal connection with the image acquisition module and is used for carrying out segmentation and feature extraction on the water surface spray image acquired in real time by adopting a convolutional neural network to obtain spray features of the water surface spray image, and the spray features comprise the size and the duration of the spray; the water spray features before feeding, during feeding and after feeding are stored in a feeding water spray image database; and the satiation degree evaluation module is used for evaluating the ingestion active degree and the satiation degree of the fish school according to the ingestion spray characteristics on the basis of a satiation degree evaluation model. According to the method, the feeding speed is adjusted according to the collected and analyzed water spray characteristics on the water surface, so that the feeding speed is coordinated with the feeding speed, precise feeding is achieved, and residual feed is reduced.

The invention discloses a forward development and optimization design method for an engine liquid fuel atomization system, and relates to the field of optimization of a spray combustion system.The forward development and optimization design method comprises the steps that a numerical simulation method is adopted to conduct spray simulation, and high-precision transient three-dimensional spray characteristics are calculated; sampling by using a scrambling Holton sampling method, and constructing an initial sample library; constructing an agent model and training to obtain a low-precision agent model; performing multi-objective optimization by using an NSGA-II genetic algorithm based on the model to obtain a Pareto frontier solution; adopting K-means clustering to classify Pareto frontier solutions, select a finite solution set and calculate prediction and simulation errors, if requirements are met, outputting a high-precision proxy model, otherwise, screening potential optimal sample points based on an expected improvement function, and adding the potential optimal sample points into a sample library for retraining; and on the basis of the high-precision agent model, according to the optimization target, structure parameters and injection parameters are reversely deduced. By comprehensively adjusting the structure and working condition parameters, the mixing quality of fuel and air is remarkably improved, the combustion efficiency is improved, and emission is reduced.

The invention belongs to the technical field of gas turbine combustion chamber test devices, and discloses a gas turbine combustion chamber spray characteristic optical measurement device based on window heating, which comprises a combustion chamber, one side of the top of the combustion chamber is provided with an inner groove annular plate, and one side of the inner cavity of the inner groove annular plate is rotatably connected with an annular sliding plate I; and one side of the annular sliding plate I is fixedly connected with an annular rack I. According to the device, a motor is started to enable the annular rack II to be meshed with the gear II to drive a threaded rod to rotate, the threaded rod drives a sliding block to slide in an output groove when rotating, and at the moment, the sliding block can drive a moving plate and a metal scraper to move; at the moment, the metal scraping plate abuts against the surface of the inner layer of the double-layer glass through the elastic force of the first spring, carbon deposit attached to the inner layer of the double-layer glass is scraped and cleaned away through the metal scraping plate in the moving process, and it is avoided that the carbon deposit is attached to the surface of the inner layer of the double-layer glass to affect the clearness of optical measurement.

This invention discloses a method and system for simulating the consistency of droplet generator spreading characteristics between ground and space, used to obtain the spreading characteristics of droplet generators in a vacuum environment. It can equivalently convert ground test results into space test results, solving the problem of equivalent measurement for consistency between ground and space. By scaling down the operating parameters of the jet spreader under rated conditions, it overcomes the adverse effects caused by ground test environment limitations leading to excessively thick droplets that do not match the actual spreading effect in the space environment, thus achieving equivalent measurement for consistency between ground and space. Furthermore, by placing several droplet collectors with the same surface area and material at different locations and measuring the mass increment of multiple droplet collectors, it achieves measurement of liquid film thickness uniformity.

The invention discloses a method for predicting spraying characteristics of an internal combustion engine. The method comprises the following steps: establishing an original data set comprising data of working condition parameters and data of spraying characteristic parameters; calculating the deviation between the measured value and the calculated value of the existing spray characteristic formula, and correcting the existing spray characteristic formula; constructing a physical constraint system of spraying characteristics; extrapolating and expanding by adopting a Gaussian process regression method; performing interpolation enhancement by adopting a generative adversarial network; constructing a spray prediction model through deep learning; according to the method, an existing spraying characteristic formula is corrected through the deviation value, and the data expansion accuracy is improved; the limitation of small sample experimental data is effectively solved through data enhancement, Gaussian process regression extrapolation with priori knowledge is utilized to expand and cover limit working conditions, a correction formula and physical constraints are added into a generative adversarial network, details are further complemented, data breakpoints are eliminated, and a high-quality data set is constructed. And the generalization ability, the prediction precision and the physical rationality of the deep learning model are improved.

The invention is directed to a method and apparatus (150) for determining a spray characteristic of a test coating material sprayed onto a test substrate using a spraying device operated in accordance to a predetermined set of spray parameters (124), that comprises receiving thickness data (126) associated with thickness distribution obtained by spraying the coating material on a test substrate using the predetermined set of spray parameters, and determining and providing, using the received thickness data, film build kernel function data (127) indicative of a film build kernel function associated to a circularly-symmetric spray pattern and representing the spray pattern associated to the predetermined set of spray parameters. The use film build kernel function data enables a cost efficient process for troubleshooting and / or optimizing the spraying process of a coating material on a substrate.

The embodiment of the application discloses a spraying verification tool and a spraying verification system. The tool is used for verifying the spraying characteristics of an experimental sheet, and the experimental sheet is provided with an oil injection hole. The tool comprises an oil inlet pipe, a base and a metering plate. The oil inlet pipe is used for connecting an oil pump; the base is provided with a first oil inlet hole; and the surface of the metering plate is provided with a line segment feature for indicating the spraying characteristics. The base and the metering plate are provided with a containing cavity, the experimental sheet is arranged in the containing cavity, and the oil inlet pipe, the first oil inlet hole and the oil injection hole are sequentially in fluid communication, so that the fluid can be sprayed to the metering plate through the oil injection hole. The tool has the advantages of simple structure, convenient installation, good experimental accuracy, high test efficiency, rapid iteration and optimization of the oil injection structure in the early development stage and low research and development cost. The spraying verification system has the spraying verification tool and all the advantages of the spraying verification tool.

An aerosol hair spray product having a spray device and an environmentally friendly pressurizable container. The container includes a container wall that encloses a reservoir for storing a compressed gas propellant and a hair spray composition. Spray characteristics of the product, including spray rate, median droplet size, and spray diameter, are maintained throughout the life of the product.

The application discloses a double-valve oil injector reliability test system, and belongs to the technical field of monitoring of test systems, and comprises a fuel supply and recovery subsystem, an oil tank, an oil injection part, an oil injector tool and a control unit, the inlet end of the oil injection part is communicated with the oil tank, the outlet end of the oil injection part is communicated with the oil inlet end of the double-valve oil injector through the oil injector tool, the oil injector tool is further used for bearing the oil injector and taking fuel, and the control unit is used for controlling fuel pressure, fuel injection amount and fuel injection frequency; and a monitoring subsystem is used for controlling and monitoring the operation of the fuel supply and recovery module and comprises an image acquisition module, wherein the image acquisition module is used for acquiring spray characteristic images of the double-valve oil injector. The application can timely monitor whether the double-valve oil injector leaks oil.

This invention discloses an adaptive air-assisted swirl nozzle with automatic cleaning function and its operating method, relating to the field of internal combustion engine exhaust gas treatment and purification. It includes a ball valve, a ball valve seat, a flow divider, an orifice plate, a housing, and a sliding sleeve. It can simultaneously control gas and liquid flow and achieve self-cleaning by purging residual urea solution from the nozzle flow channel after injection. This invention controls the connection state between the ball head air orifice and the valve seat air inlet by controlling the relative displacement between the ball valve and the ball valve seat. This achieves air-assisted atomization characteristics under conditions of small ball valve lift and low injection flow rate, and swirl spray characteristics under conditions of large ball valve lift and high injection flow rate, and enables adaptive switching between the two spray characteristics.

A robot programming device (100) for creating an operation program for an application operation in which a spray material sprayed from nozzles of a spray device is applied to a member to which the application is to be carried out while the spray device is moved by a robot (110) to which the spray device is attached, the robot programming device (100) comprising an operation pattern storage unit (25) which stores a plurality of types of operation patterns showing the operation of the spray device and consisting of a continuous path containing a periodic repetition of a specific pattern;and a step distance determining unit (28) which, for one of the plurality of types of operation patterns stored in the operation pattern storage unit (25), determines step distances of the periodic repetition of the determined pattern in this one operation pattern based on spray parameters indicating the spraying characteristics of the spray material by the nozzles of the spraying device;

This utility model discloses a spray gun for a sludge direct injection and co-firing system, including a sludge conveying pipe. An atomizing nozzle is provided at the end hole of the sludge conveying pipe, and a sludge inlet connector is provided at the middle left side of the upper end of the sludge conveying pipe. This utility model uses two compressed air streams to simultaneously blow and push the sludge at multiple points and angles. By optimizing the size, number, distribution, and tilt angle of the airflow nozzles, it solves the problems of poor atomization effect of sludge material dispersion and even obstruction of sludge flow. In addition, by optimizing the cross-sectional size of the flow channel between the outer conical surface of the nozzle seat and the inner hole surface of the nozzle sleeve along the entire flow path of the air-sludge mixture, it achieves good uniformity of air-sludge mixing and good spray characteristics of the air-sludge mixture. Its structure is simple, the atomization effect is good, the reliability of use is high, and it can ensure complete combustion of sludge. It has wide applicability in this technical field.

A control system for operating a showering system using load-based occupancy detection includes a spray head actuator, a position sensor, and a controller. The spray head actuator is configured to control a spray generated by a spray head. The position sensor is configured to generate a position signal indicative of a user location within a shower enclosure based on a load applied to the position sensor. The controller is communicably coupled to the position sensor and the spray head actuator, and is configured to determine a spray characteristic of a spray produced by the spray head based on the position signal, and control the spray head actuator based on the spray characteristic.

The present invention discloses a device and a test method for measuring the airway spray characteristics of a methanol engine, comprising a support, the support is fixedly connected to a constant volume combustion chamber cavity through a coupling, a wall-impacting plate is arranged inside the constant volume combustion chamber cavity, a transient thermocouple is arranged on the wall-impacting plate, a methanol nozzle is arranged on the top of the constant volume combustion chamber cavity, a fixing clamp is arranged on the methanol nozzle, a bolt is arranged on the fixing clamp, and the methanol nozzle is installed on the top of the constant volume combustion chamber cavity through the fixing clamp and the bolt. The device of the present invention is exquisitely designed and relatively simple in structure, and traditional complex and cumbersome measuring equipment is abandoned. This simplicity not only reduces the manufacturing cost, but also makes the operation process extremely convenient. Users can easily get started to accurately measure the airway spray characteristics of a methanol engine without long-term training or complex settings.

The utility model belongs to the field of diesel engine spray characteristic test, and particularly relates to a diesel engine spray characteristic measurement test platform under an ultrahigh pressure condition, which comprises an oil tank, a high-pressure oil pump, a common rail pipe, a supercharging device, an oil sprayer, a constant-volume combustion bomb, a spray image acquisition device and a control unit, the oil tank is connected with the high-pressure oil pump through a pipeline, the high-pressure oil pump is connected with the common-rail pipe through a pipeline, the common-rail pipe is connected with the supercharging device through a pipeline, the supercharging device is connected with the oil sprayer through a pipeline, and the output end of the oil sprayer is arranged in the constant-volume combustion bomb. The spray image acquisition device acquires a spray image in the constant volume combustion bomb; and a control circuit of the supercharging device, a control circuit of the oil sprayer and a control circuit of the spray image acquisition device are all connected with the control unit. The device is simple in design and reliable in performance, and can test the spraying characteristics of the diesel engine under the condition of ultrahigh-pressure injection. And the situation that images are not captured in time or are not captured in time can be avoided, and snapshot efficiency is improved.

This invention belongs to the technical field of gas turbine combustion chamber test devices, and discloses an optical measurement device for the spray characteristics of a gas turbine combustion chamber based on window heating. The device includes a combustion chamber, with an inner groove annular plate installed on one side of the top of the combustion chamber. An annular sliding plate is rotatably connected to one side of the inner cavity of the annular plate, and an annular rack is fixedly connected to one side of the annular sliding plate. In this invention, turning on the motor causes the annular rack to mesh with a gear, driving a threaded rod to rotate. As the threaded rod rotates, it causes a slider to slide within the output groove. This slider then moves a moving plate and a metal scraper. The metal scraper, through the elasticity of a spring, contacts the surface of the inner layer of the double-layered glass. During movement, the metal scraper cleans the carbon deposits adhering to the inner layer of the double-layered glass, preventing these deposits from affecting the clarity of the optical measurements.

The invention relates to the technical field of high-pressure pumps, and discloses a normally-open high-pressure pump which comprises an outer shell, a pressure cavity is formed in the outer shell, a plunger component located in the outer shell is installed below the pressure cavity, and an electric control component located in the outer shell is installed on one side of the pressure cavity. A pressure cavity is formed in one side of the outer shell, a valve body component located in the outer shell is installed on the other side of the pressure cavity, a buffering component is installed at the top end of the outer shell and comprises an upper shell body and a buffering cavity, and the upper shell body is fixedly installed on the upper surface of the outer shell body. Through cooperation of the overall structure of the device, multiple key parameters such as the spraying characteristic, the response speed, the fuel injection rate and the reliability of the system are achieved, and due to the fact that the fuel injection system has the characteristic that fuel injection timing, the fuel injection duration, the fuel injection pressure and the fuel injection rule can be flexibly adjusted; by means of the device, the economical efficiency, the dynamic property and the emission performance of the engine can be further improved.

Provided are a two-fluid nozzle, an inner nozzle member, and an outer nozzle member that suppress variations in spray characteristics. A two-fluid nozzle (1) is provided with: a guide section (6) which is capable of relatively displacing an inner nozzle (10) and an outer nozzle (70) in a first direction (101) by sliding between the inner nozzle (10) and the outer nozzle (70), and which regulates the relative displacement of the inner nozzle (10) and the outer nozzle (70) in a second direction (102) orthogonal to the first direction (101); and a holding part (9) capable of restricting the relative position of the inner nozzle (10) and the outer nozzle (70) in the first direction (101).

The invention discloses a heaven and earth consistency simulation test method and a heaven and earth consistency simulation test system for the spreading characteristics of a liquid drop generator, which are used for obtaining the spreading characteristics of the liquid drop generator in a vacuum environment. A ground test result can be equivalently converted into a space test result, and the problem of space-ground consistency equivalent measurement is solved. The working parameters of the jet spreader under the rated working condition are subjected to scale reduction design, so that the adverse effects caused by the fact that the jet spreader under the rated working condition is adopted to work due to limitation of ground test environment conditions, the thickness of liquid drops is too large, and the space environment real spreading effect is not met are overcome, and heaven and earth consistency equivalent measurement is achieved. A plurality of liquid drop collectors with the same surface area and material are placed at different positions, and the mass increment of the plurality of liquid drop collectors is measured, so that the thickness uniformity of the liquid film is measured.

The invention belongs to the field of engine working performance analysis, and particularly relates to a cylinder pressure rapid calculation method and system for a compression ignition type methanol engine based on the actual spraying characteristic. The method comprises the steps that 1, initial conditions of cylinder pressure calculation are determined according to model parameters of the compression ignition type methanol engine, discretization processing is conducted on the working process of the whole engine from compression starting to combustion ending, and the discretization processing is divided into equal-interval calculation step lengths; 2, after oil injection is started, the penetration distance, the air entrainment rate, the turbulence energy and the evaporation rate of methanol mist spray in each step length are calculated through a manifestation discretization model; 3, based on the parameters in the step 2, the ignition delay period and the combustion rate of evaporated methanol are calculated; and 4, according to the combustion rate calculated in the step 3, the overall heat release rate in the cylinder can be calculated, and rapid calculation of the cylinder pressure is achieved. According to the method, modeling is carried out on the basis of the in-cylinder manifestation characteristic of the methanol spray, and the in-cylinder pressure is quickly and accurately predicted, so that the performance prediction and control optimization capability of the compression ignition type methanol engine is enhanced.

The application discloses an optical measuring device and a test method for a nozzle test cabin, and belongs to the technical field of nozzle atomization characteristic testing. The optical measuring device comprises a guide rail assembly, a camera, a light source and a laser particle size analyzer. The guide rail assembly comprises a first guide rail and two second guide rails arranged in parallel with each other. The camera, the light source and the laser particle size analyzer are respectively movable along the corresponding guide rails through a moving platform. The light source is arranged on the second guide rails and is oppositely arranged, and is used for forming an illumination area for spray imaging in the nozzle test cabin. The emitting end and the receiving end of the laser particle size analyzer are arranged on different second guide rails respectively, and are used for forming laser rays passing through the spray area of the nozzle. The application can realize continuous testing of various spray characteristics under the same test working condition and unified spatial reference, and improve the spatial consistency and repeatability of the test results.

The invention discloses a self-adaptive air-assisted swirl nozzle with an automatic cleaning function and a working method, and relates to the field of internal combustion engine tail gas treatment and purification, the self-adaptive air-assisted swirl nozzle comprises a ball valve, a ball valve seat, a splitter plate, a pore plate, a shell and a sliding sleeve, the function of controlling gas circulation and liquid circulation at the same time can be achieved, and the self-cleaning function is achieved by purging residual urea solution in a nozzle flow channel after spraying is finished. The communication state of the ball head air hole and the valve seat air inlet hole is controlled by controlling the relative displacement between the ball valve and the ball valve seat, so that the air-assisted atomizing characteristic is achieved under the working condition of small lift and low injection flow of the ball valve, and the rotational flow atomizing characteristic is achieved under the working condition of large lift and large injection flow of the ball valve; and self-adaptive switching of spraying with two characteristics is realized.

There is provided a system and method for determining spray characteristics of a powder or liquid spray. The method including: receiving spray characteristics of the powder or liquid spray; generating a spray map comprising correlating the received spray characteristics to spray application characteristics, operational parameters of a spray apparatus, or both, the correlations determined using a calibration of the scanning measurements; and outputting the spray map. In a particular case, the method further including adjusting operational parameters of the spray apparatus to achieve a specific performance of application of the spray using the spray map.

The invention relates to an aerosol model analyzer, which relates to the technical field of inhalation and nasal preparation spray characteristic determination and evaluation equipment, and comprises a protection device, a trigger device, a laser device, an imaging device and a control analysis device, the protection device is used for providing a dark environment for the laser device and the imaging device; the triggering device is used for triggering the nasal preparation or the inhalation aerosol preparation; the laser device is arranged opposite to the trigger device and is configured to irradiate spray formed by the trigger device and form a laser lamp plate when the trigger device works; and the imaging device is used for shooting the spray. According to the aerosol model analyzer, the aerosol model analyzer capable of accurately measuring the inhalation and nasal preparation spraying mode and plume geometry and analyzing parameters is arranged, so that the requirements of analysis and test of the inhalation aerosol preparation and the inhalation aerosol preparation are met.

The invention discloses a data processing method and device for an injection system in a vehicle and the vehicle, and the method comprises the steps that current state information of the injection system is determined, and the current state information is used for representing the working state of the injection system; based on the current state information, injection data of the injection system are corrected, first injection data are obtained, and the injection data are used for representing injection characteristics already possessed by a tail gas treatment object injected by the injection system; a processing strategy of the first injection data is determined, and the processing strategy is used for representing a rule for processing the first injection data; based on the processing strategy and the first injection data, second injection data of the injection system are determined, and the second injection data are used for representing to-be-possessed injection characteristics of the tail gas processing object injected by the injection system. The technical problem that the failure rate of an injection system in a vehicle is high is solved.

To provide a two fluid nozzle in which variation in spray characteristics is suppressed.SOLUTION: The two fluid nozzle 1 includes the guide portion 6 in which the inner nozzle 10 and the outer nozzle 70 can be relatively displaced in the first direction 101 by the sliding between the inner nozzle 10 and the outer nozzle 70 and the relative displacement between the inner nozzle 10 and the outer nozzle 70 is restrained in the second direction 102 orthogonal to the first direction 101, and the holding portion 9 in which the relative position between the inner nozzle 10 and the outer nozzle 70 can be restrained in the first direction 101.SELECTED DRAWING: Figure 1

A system and method for determining spray characteristics of a powder or liquid spray is provided. The method includes: receiving spray characteristics of a powder or liquid spray; generating a spray map, including associating the received spray characteristics with spray application characteristics, operating parameters of the spray device, or both, the association being determined using calibration of scan measurements; and outputting a spray map. In particular cases, the method further includes adjusting operating parameters of the spray device to achieve particular performance of the spray application using the spray map.

The invention relates to the technical field of gas-liquid two-phase flow, and discloses a gas-phase turbulence characteristic measurement and prediction method in gas-liquid two-phase jet flow, which comprises the following steps: establishing a PDA (Personal Digital Assistant) system for air-assisted spray measurement, and measuring spray characteristic parameters for multiple times under the same working condition, the accuracy and the repeatability of the spraying characteristic parameters in the spraying field are verified; liquid drops with specific sizes in the spray field are selected as tracer liquid drops, the average value of the axial speed of the tracer liquid drops is calculated to be used for evaluating the local gas phase flow speed, and the terminal speed of the tracer liquid drops is calculated; calculating the Stokes number of the tracer liquid drop, comparing the Stokes number with a known flow following characteristic standard, and verifying the flow following characteristic of the tracer liquid drop in a gas phase; according to the gas-liquid two-phase flow field measuring device, the local gas-phase flow velocity is utilized, the characteristics of gas-phase turbulence motion are analyzed, a PDA system is utilized, gas-liquid two-phase flow field information is synchronously measured, and meanwhile the gas-liquid two-phase jet flow turbulence characteristics are measured.