236results about How to "Increase jet speed" patented technology

The invention relates, in case that a thermally tempered glass is produced by allowing an impact jet flow from quenching nozzles to blow against the glass, to a process for producing a curved shape, thermally tempered glass, characterized in that a quenching is conducted by simultaneously using at least two types of quenching nozzles having different exit diameters of the quenching nozzles. Furthermore, the invention relates to a curved, thermally tempered glass produced by this process and to an apparatus for producing the thermally tempered glass. In the invention, it is preferable that a exit diameter d is from φ1 mm to φ8 mm, a distance Z between the nozzle and the glass is 1 to 80 mm, a chamber pressure P is in a range of 0.1 to 0.8 MPa, and a heat flux difference is 150 kW/m² or less. Furthermore, in the thermally tempered glass, it is preferable that a difference of surface compressive stress values within a glass surface is 20 MPa or less.

A cooling system for a turbine airfoil of a turbine engine having suction and pressure side serpentine cooling channels formed between an internal support core and an outer wall of the turbine airfoil. The suction and pressure side serpentine cooling channels may be formed from legs extending in a general chordwise direction between leading and trailing edges of the airfoil. The suction and pressure side serpentine cooling channels may receive cooling fluids from a cooling fluid supply source through a cooling fluid inlet, pass the cooling fluids through the cooling system and exhaust the cooling fluids through a cooling fluid exhaust orifice proximate to the tip section. The cooling system is particularly suitable for use with low cooling fluid flow.

The invention discloses a deepwater net cage feeding method based on a suction type onboard automatic feeding system. The automatic feeding system comprises a stock bin, a sucking pipe, a sealing bin, a blocking valve, an air inlet pipe, a Roots blower, an air-feed mixing and spraying device, a discharge pipe and a power device. The sucking pipe and the discharge pipe are hoses. A feed port of the blocking valve is communicated with a sealed inner cavity of the sealing bin, and a discharge port of the blocking valve is communicated with a feed port of the air-feed mixing and spraying device. An air outlet of the Roots fan is communicated with an air inlet of the air-feed mixing and spraying device, an air-feed mixing outlet of the air-feed mixing and spraying device is communicated with an inlet of the discharge pipe, and an outlet of the discharge pipe extends from a head position of a cultivation work ship. The deepwater net cage feeding method includes loading, work ship positioning and feeding. The deepwater net cage feeding method has the advantages of shortened feeding time, high feed conveying efficiency, large coverage area and capability of saving labor, increasing feed utilization ratio and cultivation efficiency.

The invention discloses a nozzle, an ejector based on the nozzle and having an adjustable flow characteristic, and application of the ejector. The nozzle comprises a nozzle body, a small nozzle, a large nozzle and an elastic part; a thin and long hollow pipe with a valve is adopted as the small nozzle, and the elastic part is arranged between the set of large nozzle and the set of small nozzle; one end of the elastic part jacks the valve part of the small nozzle, and the other end of the elastic part jacks the large nozzle; and the elastic part can change the position of the valve of the smallnozzle under the effect of to-be-ejected gas, and then a flowing path of the to-be-ejected gas is controlled. The supply quantities of hydrogen and recycled hydrogen are automatically controlled by the nozzle according to system loads; when the low load exists, the small nozzle acts, the pressure of a nozzle outlet is small, the recovery rate of the recycled hydrogen is high, and the hydrogen utilization rate is increased; when the medium-high loads exist, the two sets of nozzles act simultaneously, and the large nozzle is used for enlarging the circulating area to provide the larger fuel flow; and the small nozzle is used for increasing the ejecting speed to improve properties of the ejector.

The invention discloses a direct-current argon arc plasma powder spray gun and a manufacturing method and belongs to the field of flame spraying equipment and technology of metal powder and metal ceramic powder.Two novel technologies including a hollow tungsten cathode outer surface annular arcing direct-current plasma heating method and an axial powder feeding mechanism penetrating the core of an argon arc are adopted, and position matching of a negative voltage pressure of the electric arc and the powder feeding mechanism is utilized, so that stability of the spray gun during long-time working is improved, and uniformity in heating temperature of metal powder particles, uniformity in spray speed and stability of spray layer quality are guaranteed.In addition, due to structural changing of a gun body, technology application field of the gun is expanded obviously, and the gun is expected to make a beneficial contribution to development of high technology in the future.

The invention discloses a piezoelectric ink jet head and a printing device with the piezoelectric ink jet head, and belongs to the technical field of ink jet printing. The ink jet head comprises a piezoelectric ceramic and a nozzle plate. The piezoelectric ceramic is provided with a plurality of strip-shaped channel walls, a groove is formed between every two adjacent channel walls, metal inner electrodes are embedded in the channel walls to form a piezoelectric bimorph structure, and the outer surfaces of the channel walls are provided with outer electrodes. The nozzle plate covers the far end faces of the channel walls, a flexible sealing substance is arranged between the nozzle plate and the channel walls at intervals, the nozzle plate is provided with nozzles, the number of the nozzles is equal to the number of grooves, and the nozzles correspond to the grooves in position. According to the piezoelectric ink jet head, the channel walls are powered up and deformed in a d31 transverse bending mode, large deformation can be produced, large deformation pressure can be produced on ink in an ink channel, large-grain-size ink can be ejected, and the ejecting speed can be improved.

The invention relates to a method and device for sandblasting, especially removing in a precise manner and/or compacting and/or coating solid surfaces, such as removing defective spots of paint from coats of lacquer, smoothing out soldered and welded joints, removal of contaminated concrete coatings or rust coatings, hardening, planing or coating metal surfaces, wherein a sandblasting agent is added by means of gravity and/or due to the effect of an injector to a carrier air flow produced by an underpressure, conveyed in a flexible hose- line system (13) to a jet lance (14) before being guided via a processing surface subject to low pressure by a sandblasting chamber, whereupon it is returned in the air flow, purified and returned to the circuit, whereby acceleration of the sandblasting agent is produced by the low pressure and the sandblasting chamber is displaced from one processing surface to another. The aim of the invention is to increase the sandblasting speed in a significant manner while at the same time economically adjusting the amount of power furnished to the processing surface for various wide-ranging fields of application using as little power as possible yet providing high flexibility and ecologically compatible recovery and reutilization of the sandblasting means. In order to achieve this, the sandblasting agent receives at least one additional energy pulse from a gas flow which is placed at least under atmospheric pressure and suctioned by the low pressure in order to reach a final speed which is significantly greater than the speed of the carrier air flow downstream from the area where dosing occurs. The final speed makes it possible to adjust the amount of power applied to the surface to be processed according to the following parameters: type and forms of the surface to be processed and the sandblasting agent, degree in which the carrier air flow is charged with the sandblasting agent, low pressure in the carrier air flow, and time and temperature of sandblasting.

Disclosed is a gas turbine combustor with an active fuel distribution control function. The gas turbine combustor comprises an end cover, a fixing plate and a fuel distribution control unit. The fuel distribution control unit comprises a motor, a transmission mechanism and a rotating plate. The end cover is fixedly connected with the fixing plate, and an internal cavity is formed between the end cover and the fixing plate. The fixing plate is provided with K positioning holes located at a first circumference, and a main fuel tube is arranged in each positioning hole. The motor is arranged outside the end cover. The rotating plate is arranged in the internal cavity. The motor is connected with the rotating plate through the transmission mechanism. The rotating plate is provided with m groups of allocation holes located at a second circumference. The numbers Qi of the allocation holes in the groups are different, and Qi is smaller than or equal to K. The motor drives the rotating plate to rotate so that the i group of allocating holes can be aligned with the Qi main fuel tube, and accordingly Qi main fuel channels are formed. According to the gas turbine combustor, different numbers of main fuel channels are formed on different load conditions, so that the combustion stability of the combustor is guaranteed and the pollution emission amount is lowered.

The invention discloses a spark discharge self-excitation jet plasma generating device which comprises at least one miniature discharge chamber. The discharge chamber is provided with one jet hole. The spark discharge self-excitation jet plasma generating device is characterized in that: the spark discharge self-excitation jet plasma generating device generates charged particles through applying a pulse high voltage and creating spark discharge in the miniature discharge chamber; and furthermore under the function of the air pressure which instantly increase in the discharge chamber, plasma is jet from a jet hole of the discharge chamber. According to the spark discharge self-excitation jet plasma generating device, the spark discharge manner is adopted. On condition that no outer blowing air exists, the plasma which is jet in high speed is generated under the function of the air pressure which increases instantly. The spark discharge self-excitation jet plasma generating device has high jet speed and high activity of the plasma and can be used for common-pressure and high-pressure environments because of adoption of the spark discharge manner, relatively high applied pulse voltage and relatively high obtained initial energy of the plasma.

Specifically provided is a single pass-curable ink having high color reproducibility and high curing properties at the same time and having high dischargeability when used in printing at high frequency and high jetting speed, as compared with conventional ones. An active energy ray-curable inkjet ink composition contains a metal lake pigment of a rhodamine dye as a pigment, and the active energy ray-curable inkjet ink composition may contain 0.5 to 10% by weight of Pigment Violet 1, Pigment Violet 1:1, Pigment Violet 2, Pigment Violet 2:2, Pigment Red 81, Pigment Red 81:1, Pigment Red 81:2, Pigment Red 81:3, Pigment Red 81:4, Pigment Red 81:5, Pigment Red 169, or Pigment Red 173 as the metal lake pigment of the rhodamine dye based on the total weight of the ink.

The invention relates to an ammonia torch burner which comprises a gas inlet barrel, a pilot burner ignition assembly, a fuel gas conveying part, a premixer and a combustion chamber. The premixer comprises a mixing cavity and an expanded cavity which is formed at the upper end of the mixing cavity and is communicated with the mixing cavity; the mixing cavity is formed at the upper end of the gas inlet barrel and is communicated with the gas inlet barrel; the upper end face of the gas inlet barrel extends into the mixing cavity; the combustion chamber is formed at the upper end of the expanded cavity and is communicated with the expanded cavity; the fuel gas conveying part comprises a fuel gas conveying main pipe, a fuel gas ring-shaped pipe communicated with the fuel gas conveying main pipe, and a plurality of fuel gas output tubes which are peripherally distributed on the fuel gas ring-shaped pipe and are communicated with the fuel gas ring-shaped pipe; the fuel gas ring-shaped pipe sleeves the periphery of the gas inlet barrel; spray nozzles of the fuel gas output tubes are radially inclined towards the axis of the gas inlet barrel and axially extend upwards into the mixing cavity; the spray nozzles adopt a necking-down form. The ammonia torch burner can realize complete combustion of ammonia and avoid the environment problem caused by residual ammonia.

The invention discloses a fuel injector. The fuel injector comprises a needle valve and a valve seat, wherein the needle valve comprises a needle valve head and a needle valve tail; the needle valve tail is in a cavity structure; a cylindrical tube body forms between the surface of the needle valve head and the inner ring surface of the valve seat, and a gradually shrunk and expanded flow pipeline of the fuel injector forms in the cavity between the cylindrical tube body and the needle valve tail. According to the fuel injector, the fuel injection speed at the injection hole of the fuel injector can be improved, the fuel atomizing characteristics of the injection hole outlet are improved without increasing external conditions such as increasing of injection pressure or other parts, and the eddy current at the nozzle outlet can be further increased under the action of the aerodynamic force of the supersonic speed airflow to atomize towards the axis, so that the atomized particle size can be further detailed and the atomizing characteristics can be improved.

The invention provides a laser head of a laser cutting machine. The laser head comprises an optical fiber connector, a shell, a frame, a protective mirror, a nozzle, a linear motor, a sliding block, aphotometric cylinder, a beam splitter prism and a lens group; the optical fiber connector is cooperated with an optical fiber to connect the laser head with a laser generating device; a laser beam issplit by the beam splitter prism after passing through a zoom lens; most laser penetrates through the beam splitter prism, linearly penetrates through the protective mirror and is emitted out of thenozzle for laser cutting; a small amount of laser is reflected into the photometric cylinder through the beam splitter prism; a light sensing mechanism in the photometric cylinder senses the light irradiation position; and the beam splitter prism is connected with the nozzle; the positions of the transmitted laser and the reflected laser are synchronously changed along with change of the positionof the laser beam irradiated to the beam splitter prism, the movement of the frame is controlled according to the position information of the reflected laser, so that the position of the laser beam irradiated to the beam splitter prism is changed, and the transmitted laser can be always coaxial with the nozzle.

The invention relates to a structure of a burner, in particular to a tube furnace burner. The tube furnace burner comprises an outer wall, an air inlet tube bank, an air inlet and an ignition tip, wherein a regulating door for regulating the air inlet amount is arranged on the outer wall; a pneumatic propeller is arranged at the bottom of the burner; a burning stabilizing cover is arranged at the top of the burner; a flame detection mounting pipe is arranged at the bottom or the side of the burner; and a flame viewing hole is also arranged at the bottom of the burner. The invention has the advantages of compact structure, stable burning, large regulation ratio, low noise, good flame spreadability, complete burning and easy control of burning and can be internally provided with a burning torch and a flame detection alarm system. The invention meets the current requirement on environmental protection, better saves the fuel and improves the burning efficiency.

The invention relates to a portable three-phase jet extinguishing method. In the method, a portable two-phase flow water mist extinguishing device is used as a carrier; the surface of ABC dry powder is modified to be hydrophobic; the modified dry powder is shaken up with water and then injected into a gas-water mixed loading bottle of the extinguishing device; nitrogen or other inert gases are charged into the bottle; then the extinguishing device is placed for later use; and the dry powder is sprayed out from the portable two-phase flow water mist extinguishing device under the extrusion of high-pressure gas when the device is used for extinguishing. The method has a comprehensive gas-liquid-solid extinguishing effect; the temperature can be reduced, the oxygen concentration can be diluted, the surface of a fuel can be cooled, a combustion reaction chain can be quickly obstructed, and the like; a type-A fire disaster and a type-B fire disaster can be effectively extinguished; the extinguishing efficiency is high; the method is basically pollution-free to a protected place; and the extinguishing effect is obviously superior to those of a single-phase flow portable extinguishing device and a two-phase flow portable extinguishing device.

The invention discloses a tail gas purification device, and specifically relates to the technical field of manufacturing of environmental protection equipment. The tail gas purification device comprises a tank body with hollow interior, wherein a gas inlet and a gas outlet are formed in the tank body; a buffer plate is connected to the top of the tank body; a filtering area is formed on one side,which is near the gas outlet, of the buffer plate; a plurality of sloping plates are rotatably connected to the inner wall of the filtering area; a first spring is connected between each of the sloping plates and the inner wall of the filtering area; a bouncing ball is slidingly connected to each of the sloping plates; a second spring is connected with each of the bouncing balls and the inner wallof the filtering area; a rotating shaft is rotatably connected into the filtering area; three blades are distributed on the rotating shaft at equal intervals in the circumferential direction; a watercollecting groove is also arranged at the top of the filtering area; a water inlet pipe is arranged in the water collecting groove; a water pump fixed outside the tank body is connected with the water inlet pipe; a circulation water pipe is connected between the water pump and the bottom of the tank body. Through adoption of the technical scheme, the problem that in the prior art, the contact time of tail gas and water is short is solved, and the tail gas purification device can be used for purifying the tail gas of an automobile part baking room.

The invention relates to an ash removing device of the tail flue of a fluidized boiler. The ash removing device comprises a smoke inlet pipe, a cooling pipe, a separation pipe and a sedimentation pipe, wherein the axis of the columnar pipeline of the separation pipe is vertical to the ground, the open end of the columnar pipeline faces to the ground, and the smoke inlet pipe is arranged on the lateral wall of the columnar pipeline; one end of the smoke inlet pipe is communicated with the interior of the columnar pipeline, and the other end thereof is communicated with the tail flue of the fluidized boiler; the cooling pipe is mounted at the sealed end at the top of the separation pipe, the other end of the cooling pipe is communicated with the interior of the separation pipe, and a spraying component is mounted in the cooling pipe; a separator is disposed on the wall face of the separation pipe and comprises a plurality of filter plates, and the filter plates are arranged on the inner wall of the separation pipe in a zigzag and staggered manner; an exhaust pipe is arranged at the bottom of the separation pipe. The ash removing device has the advantages that smoke is absorbed through water, and separation of waste gas, particles and soluble impurities is achieved by the filtering separation mechanism.

The invention relates to a main air-jet system used for weft insertion. The invention comprises a gas-holder used for holding high pressure gas, a chief nozzle used for spraying high speed air flow, and a solenoid valve which is connected with the gas-holder and the chief nozzle and used for controlling on-off of air flow. A pressure intensifier is arranged between the solenoid valve and the chief nozzle, and the pressure intensifier comprises a hollow pressure intensifier body and a piston which is arranged in the pressure intensifier body and slides along an inner cavity of the pressure intensifier body. The inner cavity of the pressure intensifier body is separated into a first air chamber and a second air chamber by the piston. The cross-sectional area of the first air chamber is smaller than the cross-sectional area of the second air chamber. A one-way valve arranged on the first air chamber conducts to the chief nozzle by a single way. At least two communicating states exist among the first air chamber, the second sir chamber, the gas- holder and atmosphere: under the first communicating state, the gas-holder conducts to the first air chamber and the second air chamber respectively; under the second communicating sate, the second air chamber conducts to atmosphere. The main air-jet system used for weft insertion can not only regulate the on-off of the air flow, but also increase the air flow pressure of the chief nozzle to obtain a larger jet velocity of the air flow and to improve the performance of accelerating weft.

A transmission type laser-electromagnetic field coupling thruster comprises a laser system, an electromagnetic accelerating electrode assembly, a working medium, a transparent base layer and an electrostatic field assembly. Focused laser beams enter the transparent base layer from a round hole formed in an electrostatic field accelerating positive electrode, the laser beams penetrate the transparent base layer and then erode the working medium, then laser plasma is generated, discharge arcs can be induced to be generated when the laser plasma sequentially penetrates a round hole in an electrostatic field accelerating negative electrode and a round hole in a high-temperature-resisting insulation plate to move to the position between an electromagnetic accelerating anode and an electromagnetic accelerating cathode after being accelerated by an electrostatic field, and the laser plasma is heated and further ionized through the discharge arcs; and a self-induced magnetic field is formed through a fast-changing alternating electric field between the electromagnetic accelerating electrodes, Lorentz force on the plasma is generated under the action of the electromagnetic field, and therefore the higher ionization rate and injection rate of the plasma are achieved, and then thrust pulses are formed. The transmission type laser-electromagnetic field coupling thruster has the beneficialeffects of being adjustable in thrust, high in propulsive efficiency, large in thrust density, small in pollution and the like.