88results about How to "Increase jet velocity" patented technology

A high velocity cold plasma array generator of atmosphere radio frequency discharge consists of cylindrical shell and generator array formed by multiple single coaxial type of cold plasma generator .It featured as building generator array in cylindrical shell, setting a switching in hole of radio frequency power supply and inlet of cold plasma operation air on said shell, connecting internal electrodes of said generator to radio frequency power supply after they are parallel-connected and external electrodes to earthing after they are parallel-connected ,setting side director or axial direction operation air inlet on said generator and setting a cooling media inlet and outlet on said shell .

The method discloses a method and device for forming high-pressure and low-temperature jet flow by cutting coolant. The method includes that compressed air stored inside an air storage tank is filtered and dried and connected to a tee joint through a hose to divide an output pipe into two branches, air in one branch is cooled by a cooling device to become low-temperature high-pressure air, and inputted into an air inlet end of a pneumatic spray nozzle after being connected with one or more than one tee joint, the air in the other branch is inputted into a well-sealed cutting fluid storage container after pressure in the air is regulated by a pressure regulating valve, the cutting fluid is pressed out, and connected into liquid inlet ends of a plurality of pneumatic spray nozzles after passing one or more than one tee joint prior through the hose, the air and the liquid are mixed outside a jet nozzle to produce high-speed jet flow. By the method, usage amount of cooling lubricating liquid is reduced, cooling and lubricating functions of fluid medium are fully performed, cutting temperature is greatly lowered, and tool durability is conspicuously improved.

The invention discloses a quick-response direct force generating device. A power supply system (1) comprises a high-voltage pulse circuit (11), a high-voltage direct-current circuit (12) and a charging and discharging capacitor (13). A spark discharge plasma synthetic jet actuator (2) of the device comprises an actuator body (24) provided with a cover plate (26), and a main discharge electrode (21), an ignition positive electrode (22) and an ignition negative electrode (23) which are inserted in the actuator body (24) at intervals. A jet outlet (25) is opened in the cover plate (26). The main discharge electrode (21) is connected with the high-voltage direct-current circuit (12), and the ignition positive electrode (22) and the ignition negative electrode (23) are connected in parallel with the high-voltage pulse circuit (11). According to the device, the pulse jet frequency and the jet energy can be adjusted according to needs, a novel generating mode is provided for controlling quick-response direct force of a high-speed air vehicle, and the device can be used an actuator in active flow control in high-speed internal and external flow fields.

The invention discloses a circumferential staggered self-circulating casing treating method for an axial-flow compressor and aims to solve the technical problem that an existing self-circulating casing treating method is poor in stability extension capacity. The technical scheme includes that a bridge and an air entraining device are provided, and the air entraining device is rotated circumferentially to fit in the flowing direction of absolute air flows of outlets of rotor blade tops and to be staggered in the circumferential direction of an air injector, so that air entraining amount is increased, and the problem that a self-circulating treated casing is poor in stable axial-flow compressor working range extending capability due to the fact that the air entraining device cannot fit in the air flowing direction of the outlets of the rotor blade tops is solved. By circumferentially rotating the air entraining device by a certain angle, the direction of an inlet, on the casing side, of the air entraining device is enabled to fit in the flowing direction of the absolute air flows of the outlets of the rotor blade tops, namely the air flowing direction of the outlets of the rotor blade tops is in alignment with the inlet of the air entraining device, so that air entraining amount is increased, air injecting speed is increased, and the problem that self-circulating treated casing is poor in stable axial-flow compressor working range extending capability is solved.

A mixer (100) for a continuous flow reactor (330) and methods for forming the mixer and the operation thereof. The mixer allows for segmentation of a primary reactant flow through a plurality of ports (124) into many smaller flows that are injected as jets into a secondary reactant flow in channels of the mixer. The channel (126) has a constant width dimension to enhance even flow distribution and local, turbulence of the primary and secondary reactant flows. The constant width dimension of the channel and the size and number of the ports of the mixer can be configured to ensure the primary reactant flow injected into the channel directly impinges on a surface (116) of the channel that is opposite the injection point at normal operating conditions.

The invention discloses a sodium alginate nanofiber as well as a large-scale electrospinning preparation method and application thereof. A sodium alginate micro-nanofiber is prepared by an airflow-assisted electrospinning method, wherein the content of sodium alginate in the micro-nanofiber is 75% or higher; the fiber diameter is 50-900 nm; the sodium alginate nanofiber is prepared according to the air-assisted electrospinning method; airflow same as a spinning jet direction is provided by a gas producing mechanism in the spinning process, so as to accelerate the evaporation of a solvent and promote the formation of spun silk; the sodium alginate nanofiber is simple in preparation method, low in requirement on spinning conditions, high in yield, and suitable for large-scale production; spinning precursor liquid is simple in formula, without adding a cross-linking agent and an irritant or toxic solvent; the content of sodium alginate in the obtained nanofiber is high, so that the sodium alginate nanofiber has significant advantage in application in fields of biological tissue engineering materials, wound repair materials or beauty and cosmetics.

The invention belongs to the petroleum production field and in particular relates to a novel perforating bullet. The perforating bullet is based on the prior perforating bullet; the bullet is inside provided with a detonation wave reshaper which effectively blocks the transmission of a detonation wave, delays the time for transmitting the detonation wave to the bottom of the reshaper and ensures that the detonation wave in a booster explosive channel can firstly reach a main interface in order that the detonation wave generated in main explosive can effectively act on a shaped charge liner, thereby improving the utilization rate of explosive energy, increasing the speed, quality and kinetic energy of the shooting flow, strengthening perforation capacity so that the perforating depth of the oil well is deeper.

The invention provides an atmospheric dielectric barrier discharge plasma sterilization device. The device comprises sensors (a temperature sensor, an air pressure sensor and a wind power sensor), an analysis circuit, a power supply control circuit, a plasma generation device and the like. The device adopts the principles of dielectric barrier discharge, preionization and self-inductance, so that the needed power supply voltage can be effectively reduced, the device volume is decreased, and the actual use of the sterilization device is convenient. And above all, breakdown voltage is reduced to more easily ionize gas, that is, plasma is more easily generated under the atmospheric condition, so that the density of the plasma is increased, and the sterilization efficiency of the device is improved. As thin needle tubing is adopted, the jet speed of the plasma is quickened, and the sterilization range of the plasma sterilization device is improved. In addition, the appearance design is more humanized, so that more convenience is brought to the actual operation; and for materials, heat-resistant and insulative engineering plastics with antibacterial effect after the plasma injection treatment are adopted.

The invention provides a three-electrode-layout DBD exciter. The three-electrode-layout DBD exciter is composed of a high-voltage electrode (1), a ground electrode (2), a third electrode (3) and a blocking dielectric layer (4). Based on this, the invention provides a device for increasing an induced jet velocity of a surface DBD exciter. The device comprises a short pulse high-voltage high-frequency plasma power supply (5), the three-electrode-layout DBD exciter and a bias high-voltage direct-current power (6). The invention further provides a method for increasing the induced jet velocity ofthe surface DBD exciter. According to the method, the plasma induced jet velocity is remarkably increased, and the discharge induced near wall jet can reach more than 10m/s.

The invention relates to a circumferential-deflecting self-circulation casing treatment for a contra-rotating gas compressor, and belongs to the technical field of internal flow control of turbomachinery. The circumferential-deflecting self-circulation casing treatment for the contra-rotating gas compressor comprises an air suction section, a bridge road and an air injection section. The two-dimensional molded line of the air suction section is composed of two semicircular arc lines, and the two-dimensional molded line of the air injection section is formed by NURBS fitting. The stall margin of a contra-rotating compressor rotor R2 can be remarkably improved through self-circulation casing treatment. Compared with casing treatment of other forms, the self-circulation casing treatment of the design can reduce efficiency loss. The stability expansion effect of the self-circulation casing treatment on a certain two-stage contra-rotating gas compressor is examined. A self-circulation casing treatment air suction port is spaced from the downstream of the front edge of the blade top of the rear-row rotor R2 by 25% of the axial chord length, an air jet port is spaced from the upstream of the front edge of the blade top of the rear-row rotor R2 by 40% of the axial chord length, the air jet angle and the air suction angle are 10 degrees, and the throat area ratio is 4.0. Researches show that the stall margin of the contra-rotating gas compressor can be obviously improved through self-circulation casing treatment at the designed rotating speed of 70%-100%.

The invention belongs to the field of oil production, and particularly relates to a deep penetration large-aperture perforating bullet which is composed of a casing, a charging portion, a metal powder composite chemical cover and a detonating device. The deep penetration large-aperture perforating bullet mainly solves the problem that a deep penetration perforating bullet and a large-aperture perforating bullet cannot form large apertures on sleeves simultaneously and the problem of deep penetration of an oil and gas well stratum. After the charging portion detonates, the metal powder composite chemical cover generates high-speed jet flow to fly to the end face of a perforating bullet hole. After the jet flow formed on the inner surface of the chemical cover penetrates through a center hole of a truncated-cone-shaped lower cover body, the high-speed jet flow which is good in continuity and even in diameter and has a certain velocity gradient is formed so as to carry out deep penetration to the oil and gas well stratum.

The invention discloses a mechanical internal circulation jet-flow anaerobic reactor and a wastewater treatment method thereof, and belongs to the technical field of biological sewage treatment. The mechanical internal circulation jet-flow anaerobic reactor comprises a reactor tank body, a multi-phase separator, a water outlet weir and an internal circulation jet-flow device, wherein the internal circulation jet-flow device comprises an upper part and a lower part; the upper part comprises a jet-flow hole, a diffusion hole, a flow guide pipe and a flow stabilization hole; the lower part comprises a motor, a rotary shaft and high-speed blades. The wastewater treatment method comprises the following steps: forming a fluidized bed layer, forming a suspended bed layer, separating a separation region and discharging water from the water outlet weir. Due to the use of the internal circulation jet-flow device, the difficult problems of low treatment load, instable effect and relatively narrow application range in the treatment process of an existing conventional anaerobic reactor are solved; the mechanical internal circulation jet-flow anaerobic reactor has the advantages of high treatment load, good water impact resistance, high concentration of biological toxicity resistance matters, quick starting and the like.

The invention belongs to the technical field of high-pressure water jet cutting machines, and particularly discloses an ultrahigh-pressure water jet cutting machine nozzle. The ultrahigh-pressure water jet cutting machine nozzle comprises a conical hollow nozzle body and a material grinding device, wherein the material grinding device is used for transporting a grinding material and comprises a spiral reamer, a drive gear and a conical hollow cylinder body; the hollow cylinder body is provided with a material inlet and a discharge pipe communicated with a nozzle body; the spiral reamer is arranged in the hollow cylinder body; one end of the drive shaft is fixedly connected with a material receiving end of the spiral reamer, and the other end of the drive shaft is provided with the drive gear; an output end of a driving motor is provided with a driving gear which is meshed with drive gears on the first drive shaft and the second drive shaft; a guide channel is communicated with a liquid outlet of the nozzle body; the pore diameter of the guide channel is equal to the pore diameter of a liquid outlet of the nozzle body; the length of the guide channel is equal to 2-3 times of the pore diameter. Compared with the traditional ultrahigh-pressure water jet cutting machine, the cutting machine is used for mixing grinding materials with high-pressure water skillfully, and water and the grinding materials act as the cutting media together, so that the cutting efficiency is enhanced.

The invention discloses a blasting cutting device with a composite charging structure and a construction method of the blasting cutting device. The blasting cutting device is composed of a shaped blasting tube, a tail connector, explosives, a detonating cord and a reverse detonating cartridge, wherein the shaped blasting tube comprises an explosive groove with a horn-shaped groove and an outer buckling explosive groove cover; a tube is filled with the explosives and is provided with the detonating cord; the reverse detonating cartridge can be connected with the tail of the tube through the tail connector, and therefore the blasting cutting device is formed; and the blasting cutting device is fixed in a blasting hole by a positioning block. According to the horn-shaped groove in the shapedexplosive tube, the charging structure of the horn-shaped groove can generate higher jet velocity than the charging structure of a cone-angle-shaped groove, and the cutting ability on rock mass is higher. The shaped blasting tube has two types including a common type and a reinforced type. A groove of the common type shaped blasting tube is an opening, a groove notch of the reinforced type shapedblasting tube is closed, a shaped cavity is formed in the groove, on the one hand, the rigidity of the structure can be enhanced, on the other hand, after water is injected into the shaped cavity, high-pressure jet water can be generated during blasting to form a water jet, the cutting ability on the rock mass can be enhanced, and the generated water mist can further play a role in dust removal.

The invention belongs to the technical field of engineering blasting and relates to a double-focusing linear jet cutter. The double-focusing linear jet cutter consists of a liner, explosive, a waveform regulator and a shell. The liner with the structure can be viewed as two traditional wedge-shaped covers which are relatively combined. The way of initiation is to initiate from the central points of two edges of a charged top. After the explosive is charged and initiated, the two wedge-shaped covers respectively form two jet flows along respective axes. The two jet flows are converged again on the symmetrical surface of the two wedge-shaped covers to form one condensed jet to cut metal and other materials. Compared with the existing devices for cutting the metal and other materials, the double-focusing linear jet cutter has the beneficial effects that the jetting speed and the continuous jetting length of the linear cutter are effectively improved, the power of the linear cutter is improved and the application prospect is wide.

The invention discloses a gas mixed pulse cleaning device for an intelligent toilet bowl, and relates to the field of water jet cleaning devices low in pressure and small in flow. The gas mixed pulsecleaning device comprises a hollow shaft, a water supply pipe, a nozzle fixing device, a water supply path, a bottom plate, a throttling pipe, a gas mixing chamber, a gas suction pipe A, a gas mixed pulse nozzle, a gas suction pipe B and an upper cover. The nozzle fixing device is arranged on the hollow shaft in a sleeving mode and can move leftward and rightward. The water supply pipe is placed in the hollow shaft. One end of the water supply path is connected with the water supply pipe, and the other end of the water supply path is connected with the throttling pipe. The water supply path isarranged on the bottom plate. The bottom plate is connected with the gas mixing chamber through laser welding. The throttling pipe is connected at the center of the gas mixing chamber. The center ofthe gas mixed pulse nozzle and the center of the throttling pipe coincide and are connected to the gas mixing chamber. The gas suction pipe A and the gas suction pipe B are arranged on the two sides of the gas mixed pulse nozzle, and the gas suction pipe A, the gas suction pipe B and the gas mixed pulse nozzle are arranged on the upper cover. The upper cover is connected with the gas mixing chamber through laser welding. Lots of water and electricity resources can be saved, the structure is simple, and the gas mixed pulse cleaning device is good in cleaning effect, water saving effect and energy saving effect through actual trial use.

The invention discloses a device and a method for synergistically enhancing a two-fluid atomization performance. The device is formed by connecting multiple stages of two-fluid atomization units in series, wherein the output of a gas-liquid mixing unit in the previous stage of two-fluid atomization unit is connected with the input of a liquid feeding unit in the next stage of two-fluid atomization unit; the output of the last stage of two-fluid atomization unit is used as the output of the whole device; and a heating device is further arranged in the liquid feeding unit. According to the device and the method for synergistically enhancing the two-fluid atomization performance provided by the invention, liquid or fog drops are heated, so that the acting force between liquid molecules is reduced, and the liquid drops can be broken easily. Through the multi-stage series connection mode, the flow of gas-liquid mixed liquid is greatly increased compared with the previous stage, the reaction in each two-fluid atomization device unit is more violent compared with the previous stage, the effect of generating high-speed jet flow with low energy consumption can be achieved, and the quality of generated fog drops is higher.

The invention discloses a self-feeding type composite rock breaking high-pressure sprayer for a radial horizontal well. The self-feeding type composite rock breaking high-pressure sprayer is provided with a sprayer shell which is provided with a forward nozzle, a backward nozzle and spiral and special-shaped flow guiding grooves. The spiral and special-shaped flow guiding grooves are located between the forward nozzle and the backward nozzle. A fluid shock excitation device is arranged in the shell and connected with the sprayer shell through threads. Four extending composite rock breaking nozzles are mounted at the front end of the sprayer shell and connected with the sprayer shell through threads. Under the condition that hydraulic power energy of the forward nozzle is not lost, the jet speed of the backward nozzle is increased to the maximum extent, so that the self-feeding force of the sprayer is increased; direct-spiral mixed jetting is adopted by the central forward nozzle, a large impact area can be formed, forward impact force and circumferential cutting force can be exerted on rock in the rock breaking process, and thus the rock breaking speed is increased; and the self-feeding type composite rock breaking high-pressure sprayer is relatively simple and reliable in structure, and broad in application prospect.

The invention discloses a coal water slurry flame-free oxygen-enriched combustion system. The system comprises a hearth, a high-speed atomization combustor, a slurry supply system, an oxygen supply system, a flue gas circulating system and a flue gas discharging and recycling system. The high-speed atomization combustor comprises a primary air nozzle, a secondary air nozzle and a coal water slurry atomization nozzle; the slurry supply system comprises a slurry storage tank, a slurry conveying pump, a stirring filter and a slurry supply pump; the oxygen supply system comprises an oxygen tank, a gas heater and a gas pressurizing pump; the flue gas circulating system comprises a flue gas heat exchanger, a dust remover, a circulating draught fan and a condenser; and the flue gas discharging and recycling system comprises a CO2 compression and storage device and a chimney. According to a coal water slurry flame-free oxygen-enriched combustion technology provided by the invention, oxygen is pressurized and heated and is mixed with circulating flue gas, and mixed gas is sprayed into a furnace to form volume combustion; coal water slurry is subjected to heat exchange through the flue gas heat exchanger, so that the initial temperature is improved and ignition heat is reduced; and the problems of a current coal water slurry boiler that the combustion efficiency is relatively low, the emission of NOx is high and the capturing cost of CO2 is high and the like can be solved.