13 results about "Spray cone" patented technology

The application discloses a single-hole rotational flow urea nozzle with geometrically induced vortex line cavitation, which comprises a ball valve, a valve seat, a rotational flow sheet, a flow converging sheet, an outer shell and a hole plate, the valve seat is fixedly connected with the inner wall of the outer shell, an annular protrusion is arranged in the valve seat, a through hole is arranged in the middle of the annular protrusion and is communicated with both ends of the annular protrusion, a sealing ball is arranged at one end of the annular protrusion, and the sealing ball is fixed at one end of the ball valve; the ball valve is movably connected with the inner wall of the outer shell, and a gap for fluid flow is arranged between the ball valve and the outer shell; the other end of the annular protrusion is sequentially provided with the rotational flow sheet, the flow converging sheet and the hole plate, the rotational flow sheet is abutted against the annular protrusion, and a plurality of rotational flow channels which are inclined relative to the axis of the rotational flow sheet are arranged on the rotational flow sheet; and the flow converging sheet is provided with a flow converging channel. The rotational flow sheet provided with the rotational flow channels cooperates with the flow converging sheet, so that the spray cone angle is smaller and the spray is uniformly distributed in the circumferential direction under the working condition of determining the flow of the nozzle.

The utility model discloses a spraying device for a cooling section of an aero-engine combustion chamber testing machine. The spraying device comprises a front flange, a rear flange, a large nozzle water spraying ring unit and a small nozzle water spraying ring unit, the large nozzle water spraying ring unit, the small nozzle water spraying ring unit, the front flange and the rear flange are connected with one another through bolts and then are mounted on the combustion chamber testing machine for detachable integrated mounting; inlets of the large nozzle water spraying ring unit and the small nozzle water spraying ring unit are mutually independent and are used for selecting a cooling scheme according to cooling requirements; the small nozzle water spraying ring unit is located close to an outlet of the combustion chamber and used for achieving the maximum heat exchange function. 10 nozzles are arranged in the large nozzle water spraying ring unit and the small nozzle water spraying ring unit at equal intervals, and the spray cone angle is 30-45 degrees, so that the contact area of spray and hot air is increased while the widest spray coverage area is achieved. According to the invention, the temperature of the tail flow of the combustion chamber tester is effectively reduced, so that test equipment and environment are protected.

The invention relates to the technical field of aerosol particle size control, in particular to a multi-mode self-suction type superfine aerosol emitting device and a control method thereof. Through reasonable arrangement of the composite atomization module, the liquid supply module, the taper angle adjusting module, the particle size detection module and the central control module, full-coverage adaptation from low-viscosity liquid to high-viscosity liquid can be achieved, and the problem that in the prior art, the high-viscosity liquid atomization adaptability is poor is solved; the atomization requirements of different scenes can be met through precise adjustment of the spraying cone angle, the spraying pressure, the spraying speed and the spraying particle size; through the synergistic effect of a composite atomization mechanism and the Laval nozzle and in combination with particle size detection feedback adjustment, the spray particle size of high-viscosity liquid such as diesel oil can be accurately controlled to be a minimum value so as to meet the core requirement of aerosol preparation, and the device is low in manufacturing cost, stable in operation and high in practicability. The problems of blockage, substandard particle size, easiness in ignition and the like in the atomization process of high-viscosity liquid can be effectively solved.

The invention belongs to the technical field of petrochemical engineering, and relates to a low-power acoustic excitation device for pipeline water injection spraying and a regulation and control method. The device comprises a transducer fixed on the outer side of a thin-wall acoustic window on the outer wall of a pipeline close to a nozzle, the transducer drives the thin-wall acoustic window through an acoustic waveguide to generate a vibration radiation surface, a periodic pressure field is coaxially coupled to a near field of the nozzle, and liquid film instability and liquid drop secondary crushing are strengthened on the premise that the flow of a water injection pump and the gas speed in a pipe are not changed. According to the regulation and control method, the volume median particle size, the coverage rate, the spray cone angle and the large drop volume fraction are obtained through the observation window and the online imaging and / or particle size measurement device, and the working frequency and the driving amplitude of acoustic excitation are automatically adjusted by adopting a closed-loop strategy of frequency coarse sweeping-resonance locking-amplitude fine adjustment-hysteresis retention. The controllable sound field is coupled in the near field of the nozzle, so that the instability behavior of the liquid film / liquid column is adjustable, the volume fraction of large liquid drops is reduced, the spray coverage rate is increased, and a quantifiable acceptance index is formed.

The application provides a double-liquid-flow-channel rotary flow cone-shaped nozzle, which comprises two layers of solution channels, a first solution enters a spraying cone-shaped spraying surface from an inner layer through a first flow channel, and a second solution enters a ring-shaped spraying surface from an outer layer through a second flow channel; an inlet of the first flow channel is located at an upper middle part of the nozzle, the first flow channel is connected with a first rotary flow device, a first tangential rotary flow channel is arranged on an inner wall of the first rotary flow device, the first tangential rotary flow channel is distributed on the inner wall of the first rotary flow device, the first rotary flow device is connected with a first rotary flow cavity, and an end of the first rotary flow cavity is connected to a first cone-shaped contraction cavity and then to a first cone-shaped jet hole to realize spraying; a second liquid inlet flow channel is tangentially connected with a circular ring-shaped rotary flow cavity, the circular ring-shaped rotary flow cavity is connected with a second ring-shaped contraction cavity, and the second ring-shaped contraction cavity is connected with a second ring-shaped jet hole.

The disclosure provides an atomization state recognition method and device of an atomizing nozzle and a training method of an atomization state recognition model, which can be applied to the technical fields of image processing and computer vision. The atomization state recognition method of the atomizing nozzle comprises: performing droplet edge enhancement processing on an original atomization image generated by the atomizing nozzle in a production process to obtain a target atomization image without imaging noise; performing multi-dimensional asymmetric convolution processing on the target atomization image to obtain multi-dimensional atomization features; performing weight mask processing on the multi-dimensional atomization features based on a spatial attention mechanism to obtain spray profile features with droplet boundary information and spray cone structure information, and performing weight fusion processing on the spray profile features based on a double-head attention mechanism to obtain atomization fusion features; and performing classification processing on the atomization fusion features to obtain an atomization state recognition result of the atomizing nozzle.

This utility model discloses a rotatable and adjustable main nozzle mounting base for a cone-shaped spray tube loom. Relating to the field of textile machinery technology, the rotatable and adjustable main nozzle mounting base includes a mounting base with a support plate rotatably connected to its top. Two support plate mechanisms are fixedly connected in a linear array on the top surface of the support plate. A servo motor B is fixedly connected to the outer side of each support plate mechanism. This utility model uses the servo motor B to drive a bevel gear A, which meshes with the bevel gear B on the nozzle support, easily rotating the nozzle support and thus adjusting the angle of the nozzle assembly. Simultaneously, an tilt sensor monitors and provides feedback on angle changes in real time, ensuring the accuracy of the adjustment. This allows for precise control of the airflow direction for weft insertion in actual production, regardless of fabric type or yarn type, effectively solving the problem of unstable weft flight and significantly improving weaving quality.

Operating an engine includes energizing an electrical actuator for a valve in a fuel injector according to a waveform alternating a plurality of on-times with a plurality of dwell times, and outputting a pulsed injection of a gaseous hydrogen fuel from the fuel injector entraining air between pulses of the gaseous hydrogen fuel. Entrainment breaks are produced between the plurality of pulses in a spray cone of the pulsed injection. The gaseous hydrogen fuel and air experience enhanced in-cylinder mixing based upon the air entrainment. Related apparatus is also disclosed.

Method for applying corrosion protection wax to conservation areas of a surface to be conserved, with the following characteristics: a. The discharge is carried out by means of a robot tool (20) attached to a robot arm (12) of a robot (10) with the following features: - the robot tool (20) comprises a nozzle unit (50) which is designed for the selective discharge in one discharge direction of unatomized corrosion protection wax without the supply of compressed air in the form of a thin jet (90) and of corrosion protection wax atomized with compressed air in the form of a spray cone (92), and - the nozzle unit (50) is connected to a supply channel (70) for compressed air and to a supply channel (72) for corrosion protection wax, and - the nozzle unit (50) has an internal nozzle (59) for generating the thin jet (90) of corrosion protection wax, wherein the internal nozzle (59) is supplied via the supply channel (72) for corrosion protection wax, and - the nozzle unit (50) has an external nozzle (53) for generating the spray cone (92) of atomized corrosion protection wax, and - an atomizing chamber (74) is provided between the inner nozzle (59) and the outer nozzle (53), wherein the supply channel (70) for the compressed air opens into the atomizing chamber (74), and - the inner nozzle (59) is aligned in the discharge direction with the outer nozzle (53), so that the corrosion protection wax exiting through the inner nozzle (59) in the form of a jet (90) can be discharged as a jet through the atomization chamber (74) and the outer nozzle (53) when the atomization chamber (74) is not supplied with compressed air, and - the atomizing chamber (74) is designed to atomize the jet exiting the inner nozzle (59) by means of the supplied compressed air when the atomizing chamber (74) is supplied with compressed air, and b. the discharge is carried out for coating at least a first preservation area (18) in the form of an unatomized jet (90) of corrosion protection wax, and c. The discharge is carried out to coat at least a second preservation area (16) in the form of a spray cone (92) with corrosion protection wax atomized by means of compressed air.

The invention discloses a method and a device for improving spray characteristic prediction precision of a liquid ammonia direct injection system. The method comprises the steps that on the basis of the spraying mechanism of the liquid ammonia direct injection system, causal relationship analysis is conducted on all operation parameters and all spraying characteristic parameters of the liquid ammonia direct injection system, key operation parameters are determined on the basis of the analysis result, and all the spraying characteristic parameters comprise the spraying penetration distance, the spraying cone angle, the atomization area and the atomization volume; based on the physical characteristics of the liquid ammonia direct injection system, respectively constructing empirical models of the spraying characteristic parameters; based on the causal relationship between the key operation parameter and each spray characteristic parameter, constructing a liquid ammonia spray characteristic prediction model, and embedding each empirical model into a loss function of the prediction model in a physical constraint form; and aiming at each spraying period, respectively outputting liquid ammonia spraying characteristic parameters of the liquid ammonia direct injection system based on the prediction model. According to the invention, the prediction precision of the spray characteristics of the liquid ammonia direct injection system can be improved.

A carbon dioxide-neutral biodigester plant includes a biodigester for carbon dioxide-neutral, single-stage or multi-stage production of biogas by fermentation of biomass in a fermentation liquid agitated in presence of elemental hydrogen, hydrogenotrophic and methanogenic archaea, and activated carbon masses, a source of ammonia connected to a first ammonia line, an ammonia cracker to produce hydrogen or a hydrogen-nitrogen mixture by catalytic cracking of ammonia, a first hydrogen line for feeding the produced hydrogen or the hydrogen-nitrogen mixture directly into the biodigester, and a treating device for treating activated coal masses with hydrogen at higher pressure. The treating device includes a pressure line and a treating spray lance. Hydrogen-containing activated coal masses configured as spray cones are injected into the fermentation liquid of the biodigester.

This invention discloses a partially premixed combined nozzle with adjustable fuel adjustment range and its application. The nozzle includes a nozzle body with a dual-path, single-chamber, single-orifice design and an air-path swirl atomizing assembly. The air-path swirl atomizing assembly includes an air annular cavity and air swirl components disposed on the sidewall of the air annular cavity. The air swirl components rotate in the same direction as the main fuel path swirl components and the auxiliary fuel path swirl components. At low fuel supply pressure, the air-path swirl atomizing assembly is activated, and air and fuel rotate in the same direction within the air annular cavity, achieving partial premixing and atomization to form a stable spray cone angle. At high fuel supply pressure, the air path pressure is increased, and the fuel entering the air annular cavity achieves partial premixing under the action of air, increasing the spray cone angle. This invention can meet the requirements of good atomization performance, suitable atomization cone angle, and wide fuel adjustment range under different operating conditions and fuel supply pressures. It can also improve fuel-air premixing, reduce nozzle outlet temperature, and improve combustion efficiency.

Operating an engine includes energizing an electrical actuator for a valve in a fuel injector according to a waveform alternating a plurality of on-times with a plurality of dwell times, and outputting a pulsed injection of a gaseous hydrogen fuel from the fuel injector entraining air between pulses of the gaseous hydrogen fuel. Entrainment breaks are produced between the plurality of pulses in a spray cone of the pulsed injection. The gaseous hydrogen fuel and air experience enhanced in-cylinder mixing based upon the air entrainment. Related apparatus is also disclosed.