22 results about "Jet injection" patented technology

The invention relates to the technical field of automatic control, and discloses a pressure closed-loop self-calibration method for an ultrahigh-speed jet injection process, and the method comprises the steps: initializing a system, and building a pressure and temperature combined compensation model; a high-precision sensor is used for collecting real-time pressure and temperature data; by calculating a pressure deviation intelligent switching control strategy, PID is combined with feed-forward compensation in a steady state, and a deep reinforcement learning algorithm is switched to realize quick response in a transient state; automatically triggering closed-loop self-calibration according to operation time or a deviation threshold value, executing zero point and full scale calibration and updating compensation parameters; and carrying out residual analysis by using a digital twinborn model to realize fault diagnosis and early warning. According to the invention, the problems of low control precision and poor long-term stability of an ultra-high-speed jet flow process under nonlinear and large-lag working conditions are solved, and high-precision stable control and system self-adaptive calibration under a wide speed range are realized.

The invention relates to the technical field of metallurgical furnace charge conveying and control, and discloses a top-blown furnace multi-channel supersonic jet type feeding control method and system.The method comprises the steps that flow distribution in a nozzle is achieved through a piezoelectric ceramic high-speed valve installed at a pipeline inlet, and a nozzle servo motor is controlled at the top of a spray gun to adjust the spray angle of the spray gun; the feeding speed, pressure and temperature are monitored in real time through a pressure sensor and a flow sensor arranged in an inlet area of the pipeline and an infrared thermometer mounted at the top of the furnace; the carrier gas flow, the nozzle opening degree and the spraying angle are dynamically adjusted through control of the PLC executing mechanism, and collaborative optimization of the material flow vector, the flow field in the hearth and the heat and mass transfer process is achieved. The system comprises a spray gun, a piezoelectric ceramic high-speed valve, a flow sensor, an infrared thermometer, a nozzle control servo motor, a temperature measurement control small servo motor and a control room. The comprehensive operation efficiency of energy density distribution optimization, reaction efficiency improvement and energy consumption index reduction of the molten pool reactor is finally realized.

This invention provides a high-pressure jet injection lawn loosening machine, including a frame, wheel assembly, working unit, and control unit. The working unit includes an injection assembly, a water circuit assembly, and an air circuit drive assembly. The injection assembly includes an injection cylinder, a movable circular pressure plate sleeved on the lower end of the injection cylinder, and an injection tube fixed to the lower end of the injection cylinder and passing through the movable circular pressure plate. An elastic element is provided between the movable circular pressure plate and the cylinder seat of the injection cylinder. The water circuit assembly includes a water tank, a high-pressure pump, a high-pressure storage tank, and a switch valve. The outlet of the water tank is connected to the inlet of the high-pressure pump, and the outlet of the high-pressure pump is connected to the inlet of the high-pressure storage tank. The outlet of the high-pressure storage tank is connected to the injection tube via the switch valve. The air circuit drive assembly includes an air compressor, which is connected to the injection cylinder and used to drive the injection cylinder to move the injection tube in a reciprocating injection motion. This invention allows the site to be used immediately after operation without a recovery period and can be operated by a single person.

The utility model relates to the technical field of denitration equipment, and discloses a spray head for a flue gas SNCR denitration jet spray gun, which comprises a contraction section, a throat part, an expansion section and a spray plate which are communicated in sequence, a nozzle is arranged on the spray plate, the spray plate is fixedly connected with the expansion section, the diameter of the contraction section and the diameter of the expansion section are both larger than the diameter of the throat part, and the expansion section is fixedly connected with the expansion section. The connecting positions of the contraction section, the throat portion and the expansion section are in arc transition connection, a plurality of nozzles are formed in the spraying plate and evenly distributed on the spraying plate, the spraying plate is located on the inner side of the expansion section, and the diameter of the spraying plate is matched with the diameter of the expansion section. According to the scheme, atomized liquid drops are refined, dispersed and atomized through the nozzles, and the contact effect of a denitration agent and flue gas is improved; the particle size of fog drops is reduced while the flow rate of the denitration agent is guaranteed, the particle size distribution of the fog drops is uniform, and the flue gas denitration effect is better controlled; multi-angle spraying can be formed through the spraying plate and the spraying head, and the requirement for uniform dripping and spraying of a complex hearth structure is met.

Method for electrically contacting a component (1), wherein the component (1) is arranged on a circuit carrier (10) having a first connection area (11), wherein the first connection area (11) is connected to a second connection area (3) of the component (1) by means of an electrically conductive layer (21), wherein the electrically conductive layer (21) is applied by jet injection, and wherein the component (1) is fixed to the circuit carrier (10) by means of a curable fixing layer (16) in the form of an electrically non-conductive adhesive, characterized in that the adhesive is applied to the circuit carrier (10) such that the height of the adhesive is greatest in the middle of the oppositely arranged first connection areas (11) and decreases towards the first connection areas (11) and is at its lowest height there.and that after the component (1) is placed on the adhesive, the adhesive extends to a top surface (2) of the component (1) at its lateral edge areas and a continuous, non-stepped transition area (19) is created between the connection areas (3, 11).

To realize the tracking of a gliding stage in a missile which repeats jetting intermittently.SOLUTION: When a monitoring satellite 307 having a plurality of monitoring devices detects a significant high-temperature object, the monitoring satellite 307 transmits flying object information to a satellite integrated command center 810 via a satellite information transmission system 403 having a plurality of communication satellites 308. The flying object information includes detected time information, a monitoring satellite ID, a monitoring device ID, and monitoring data. The satellite integrated command center 810 transmits the flying object information to a countermeasure system 405 including a countermeasure asset 801 and a countermeasure ground center 802. The trajectory prediction device 803 derives the position information and the traveling direction of the monitoring satellite having the ID at the detection time in the flying object information, and the line-of-sight direction of the monitoring device having the ID. Then, the trajectory prediction device 803 extracts the high-temperature object luminance from the monitoring data and derives a line-of-sight vector directed to the high-temperature object.SELECTED DRAWING: Figure 9

The utility model belongs to the technical field of cleaning equipment, and particularly relates to a handheld cleaning device which comprises a cleaning disc assembly and a handheld frame fixedly connected with the cleaning disc assembly, a rotating joint is fixedly arranged in the middle of the cleaning disc assembly in a penetrating mode, and one end of the rotating joint is connected with a high-pressure hose in a penetrating mode. One end of the cleaning disc assembly is connected with a high-pressure hose, the other end of the cleaning disc assembly is connected with a cavitation jet injection pipe in a rotating mode, the cavitation jet injection pipe is communicated with the high-pressure hose through a rotating connector, the cavitation jet injection pipe is transversely distributed in the cleaning disc assembly, and cavitation jet cleaning nozzles are obliquely installed at the two ends of the cavitation jet injection pipe.

The present application relates to a kind of large-scale ramjet fuel injection design method based on boundary layer similarity, comprising: the basic configuration of ramjet is constructed, and by the scale variation of ramjet and the actual working condition and flow variation faced, the variation of boundary layer relative thickness in ramjet is qualitatively analyzed, and qualitative analysis result is obtained;Obtain flow field related information, capture characteristic quantity, and obtain characteristic scale information according to the basic configuration of ramjet;Boundary layer displacement thickness is calculated and corrected using scale effect phenomenon;According to general jet penetration depth formula, the corrected boundary layer displacement thickness and the jet penetration depth required for design are brought in, and fuel jet dynamic pressure ratio and jet orifice size are solved;The fuel jet dynamic pressure ratio and jet orifice size obtained are applied to the fuel injection design of ramjet, and the transverse jet injection correction scheme for the variation of boundary layer relative thickness is formed.

The application provides a jet ignition combustion chamber control method and device, a jet ignition combustion chamber, an electronic device and a storage medium. The combustion chamber comprises a pre-chamber and a main combustion chamber. A spark plug is arranged in the pre-chamber. A jet injection hole is arranged at the bottom of the pre-chamber. The pre-chamber and the main combustion chamber are communicated through the jet injection hole. The method comprises the following steps: obtaining the excess air coefficient of the pre-chamber; if the excess air coefficient reaches a preset threshold value, controlling the spark plug to ignite, so that the high-temperature jet generated by the pre-chamber enters the main combustion chamber through the jet injection hole, and the main combustion chamber is caused to occur multi-point spontaneous combustion. The technical scheme of the embodiment of the application can improve the thermal efficiency of the engine and reduce harmful gas emission.

The present invention discloses a jet injector with a heating or cooling element that controls the temperature of the fluid or drug, as it flows through the body or out the outlet of the jet injector. In one example a jet injector is disclosed comprising a body, to house a fluid or drug a mechanism in which to develop a pressure in the fluid or drug an outlet that the fluid or drug is ejected out of due to the pressure developed, where in use, the fluid or drug is injected into a patient a heating or cooling element configured to control the temperature of the fluid or drug, as it flows through any one or more of: the body or the outlet.

The present application relates to a kind of oxygen-removing device low-temperature reheat steam source pressure regulating system, including entity equipment and control hub in the technical field of thermal power plant cogeneration and boiler bypass heat supply stable pressure regulation and control, entity equipment includes feedforward perception matrix, acoustic muffling flash device, residual waveform sensing node, pneumatic damping valve array and porous jet pipe network.System acquires parameters through feedforward perception matrix, utilizes evolution prediction module to output the space coordinates and pressure wave frequency band of unvaporized water droplet induced flash expansion.Stable pressure intervention module adjusts the physical volume of acoustic muffling flash device according to prediction result and activates microwave phase change excitation field, eliminates pressure pulsation and promotes water droplet instantaneous phase change.At the same time, calculate the antiphase compensation waveform to drive pneumatic damping valve array to implement fluid interference cancellation, smooth steam passes through porous jet pipe network self-excitation oscillation jet injection, eliminate vacuum negative pressure area, prevent oxygen-removing device internal transient water hammer.

An internal combustion engine control device includes a correlation index estimation unit configured to estimate a piston temperature correlation index correlated with a temperature of a piston based on an internal combustion engine operating condition parameter and an oil jet parameter for injecting oil to a back surface of the piston; and a hydraulic pressure setting unit configured to set a hydraulic pressure of an oil jet based on the piston temperature correlation index and an evaporation parameter of fuel attached to the piston, wherein when the piston temperature correlation index is less than a first predetermined value determined based on a temperature corresponding to a fuel evaporable condition as the evaporation parameter, the hydraulic pressure setting unit sets the hydraulic pressure of the oil jet to a hydraulic pressure at which oil jet injection can be stopped.

The application discloses a kind of chaotic injection bath smelting multi-physics field coupling optimization methods based on machine learning, comprising: based on the distribution of two-mode adaptive chaotic switching mechanism regulation injection gas flow, according to the bubble number density fluctuation rate of real-time monitoring electrical resistance tomography adaptive selection chaotic mode;ERT is used to monitor the bath, and the distribution of multi-physics field is reconstructed by Tikhonov regularization, and key parameters such as flow field uniformity coefficient, bubble number density, bubble average equivalent diameter and slag layer thickness are extracted;Physical information constrained deep generative adversarial network is constructed, and fluid mechanics conservation equation is embedded into generator loss function for adversarial training;According to the deviation of model prediction result and preset threshold, PID control law adjusted by particle swarm optimization is used to dynamically adjust injection parameters.The application realizes the intelligent matching of chaotic injection strategy and actual state of bath, breaks through the working condition adaptability limitation of single chaotic mapping, and significantly improves smelting efficiency and furnace condition stability.

This invention discloses a novel method for balanced infiltration of ion-adsorption rare earth minerals using radially grooved jet injection. The method includes constructing a central hole within the ore body, constructing horizontal grooves, and numerically controlled pressure regulation. The central hole comprises multiple injection holes of varying heights penetrating the ion-adsorption rare earth ore body. The horizontal grooves are constructed using a jet-grooving structure for creating horizontal grooves and discharging slurry. The jet-grooving structure includes a radial jet nozzle, a high-pressure pump, a high-pressure hose, a slag discharge hose, and a valve. Two sets of high-pressure pumps are provided. The numerically controlled pressure regulation includes a valve, an injection hose, and a connecting pipe. This invention uses a longitudinal injection master hole as the central hole and employs small-sized radial jet nozzles to construct a multi-layered, three-dimensional, horizontally circular grooved, three-dimensional injection guiding structure within the ore-bearing layer. This forms a large-scale, balanced, three-dimensional leaching space, significantly reducing the amount of injection holes required in the topsoil layer and lowering the risk of topsoil pollution and landslides induced by the large-scale intrusion of leaching solution into the topsoil layer during injection.

A jet injection system (10) comprising (i) a microfluidic device (100) for jet ejection and (ii) a laser-based heating system (200), wherein: —the microfluidic device (100) comprises a hosting chamber (110) defined by a chamber wall (120), the hosting chamber (110) having a chamber height he selected from the range of 5-400 μm, a chamber width we selected from the range of 2hc-10hc, and a chamber length lc defined by a first chamber end (111) and a second chamber end (112), wherein the second chamber end (112) comprises a first chamber opening (131) for jet ejection from the hosting chamber (110), and wherein the hosting chamber (110) is configured to host a liquid (50); —the laser-based heating system (200) is configured to provide laser radiation (201) to one or more of the chamber wall (120) and a liquid (50) in the hosting chamber (110).

This application relates to a flame stabilizer and flame stabilization method based on planar jets. The flame stabilizer includes a jet injection device with jet nozzles. The jet nozzles include a first jet nozzle and a second jet nozzle, which are arranged along the spanwise direction of the jet injection device. The jet injection device supplies air and / or fuel to the first and second jet nozzles. The first jet nozzle ejects the air and / or fuel supplied by the jet injection device along a first direction to form a first planar jet. The second jet nozzle ejects the air and / or fuel supplied by the jet injection device along a second direction to form a second planar jet. The second direction is symmetrical to the first direction relative to the jet injection device. The first and second planar jets are used to form an aerodynamic barrier and a recirculation zone behind the aerodynamic barrier under the action of a high-speed incoming flow, reducing the total pressure loss in the combustion chamber.

The invention provides a multi-stage cavitation jet jetting device. The multi-stage cavitation jet jetting device comprises an inlet pipe, a first connecting pipe, an upstream nozzle, a second connecting pipe and a downstream nozzle. The inlet pipe is connected with the first connecting pipe, and the upstream nozzle is arranged at the joint of the inlet pipe and the first connecting pipe; the first connecting pipe is connected with the second connecting pipe, an inner cavity of the first connecting pipe is communicated with an inner cavity of the second connecting pipe, and a Helmholtz resonant cavity is formed by the first connecting pipe and the second connecting pipe; the downstream nozzle is arranged at the downstream end of the second connecting pipe; fluid sequentially flows through the inlet pipe, the upstream nozzle, the Helmholtz resonant cavity and the downstream nozzle and then is sprayed out; an organ pipe cavity structure used for inducing self-oscillation of fluid is arranged in the downstream nozzle. The problems that an existing cavitation nozzle is complex in internal structure, large in machining difficulty and high in manufacturing cost are solved, and the problems that a single cavitation mechanism adopted in the prior art is insufficient in cavitation strength and efficiency are solved.

Disclosed is a liquid jet injection device for injecting a liquid medicine into a tissue of a living body without using an injection needle. The liquid jet injection device includes: a cylinder body portion having a cylinder body, a housing surrounding the cylinder body, and a hammer body housed inside the cylinder body and formed so as to be movable between one end and the other end of the cylinder body; a control valve configured so as to selectively open and close an intake passage that connects the compressed air generation unit and one end of the cylinder, and an exhaust passage that connects one end of the cylinder and the outside, the compressed air generation unit generating compressed air to be supplied to the inside of the cylinder; a pressurizing part provided with a piston facing an opening formed at the other end of the cylinder; and a nozzle part coupled to the pressurizing part and formed so as to discharge the liquid medicine stored therein to the outside when the hammer body collides with the piston, a filling part is provided between the housing and the cylinder, the filling part being communicated to the other end of the cylinder, and the filling part being filled with compressed air by compressing the compressed air when the suction passage is open. In a state of moving from one end to the other end of the cylinder by opening the intake passage, if the exhaust passage is opened, the compressed air filled by compression in the filling portion moves from the other end to the one end of the cylinder.

This invention discloses a two-stage alternative fuel pre-combustion furnace system, relating to the field of pre-combustion furnace technology. It includes a first pre-combustion furnace body and a second pre-combustion furnace body stacked vertically, a connecting device, and a jet injection system. The top of the first pre-combustion furnace body has a first top cavity, which has a first alternative fuel inlet and a first conventional fuel inlet. The top of the second pre-combustion furnace body has a second top cavity, which has a second alternative fuel inlet and a second conventional fuel inlet. The bottom of the first pre-combustion furnace body is connected to the inlet of a decomposition furnace. The connecting device connects the first and second pre-combustion furnace bodies. The inner walls of the first, second, and connecting devices are all provided with stepped hearths. The jet injection system is located below the stepped hearths.

The invention relates to the technical field of medical apparatus and instruments, in particular to an inner cylinder type airflow rotating jet dosing device which comprises a medicine storage cavity used for storing medicine, and the medicine is a powdery substance or a liquid substance; the medicine storage cavity is provided with a medicine outlet; the rotational flow generating structure is communicated with the medicine storage cavity and is used for guiding air flow into the medicine storage cavity to form rotational air flow so as to drive the medicine to rotate; and the first gas conveying pipe is communicated with the rotational flow generating structure. The rotational flow generating structure is arranged in the medicine storage cavity, air flow is guided into the medicine storage cavity to form rotational air flow, then medicine is driven to rotate, and the medicine has sufficient angular momentum. The medicine with the angular momentum has the normal momentum and also has the angular momentum, and when the medicine is in contact with a wound surface, tangential friction force can generate a drilling effect, so that the medicine can be embedded into tissue gaps more easily, rebound is reduced, anchoring stability is improved, water absorption is faster, a better blood coagulation activation effect is achieved, a firmer physical barrier is achieved, and the optimal curative effect is achieved.

This invention provides a method for adjusting turbine flow capacity based on casing jet injection, belonging to the field of turbine technology. A jet injection channel is provided in the casing, located near the throat. Airflow from the high-pressure compressor passes through the jet injection channel and enters the guide vane passage. When no jet injection is applied, the fluid near the endwall migrates towards the suction side due to the lateral pressure gradient, forming a channel vortex. By injecting jet injection into the casing, a flow separation zone is generated on the inner surface of the casing. Simultaneously, the aforementioned migrating flow is enhanced, and a portion of the mainstream flow downstream of the jet injection point is entrained by the high-momentum jet flow. The two flows mix, causing premature and extensive separation in the guide vane corner region. The low-energy fluid regions generated by these two separations affect the effective flow area of ​​the mainstream flow, altering the guide vane's flow capacity. This invention avoids the difficulties of applying existing geometric adjustments to high-pressure turbines and the increased complexity of the internal cooling structure of the blades caused by aerodynamic adjustments.