17 results about "Spray characteristics" patented technology

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.

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.

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.

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.

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 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.

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