41results about How to "Enhanced entrainment" patented technology

The invention relates to a centrifugal separator for cleaning of gas from solid or liquid particles suspended therein which are of greater density than the gas. A main object of the present invention is to accomplish a centrifugal separator which does not have said inactive regions and thereby achieves efficient separation of particulate contaminants from a gas. This object is achieved by the centrifugal separator initially defined, which is characterised in that the interspaces between the separation discs at least at their radially outer parts are substantially open for flow of the gas in the circumferential direction and that mutually adjacent separation discs are arranged at mutual spacing such that rotation of the rotor causes a pumping action in the interspaces, which pumping action drives the gas from the gas inlet, through the interspaces between the separation discs and out via the gas outlet.

A flare burner that is particularly suitable for use in connection with ground flares and other types of flares in which it is important to control the height of the flame envelope created by the burner is provided. The flare burner includes a pre-mix zone including a pre-mix chamber into which air is entrained. A uniform mixture of fuel and air is formed in the pre-mix zone and caused to exit an air / fuel outlet in the top of the pre-mix chamber. In one embodiment, the amount of air in the fuel / air mixture that exits the air / fuel outlet is in excess of the stoichiometric amount of air required to support combustion of the fuel in the mixture. Fuel is injected around the perimeter of the air / fuel outlet, combustion is initiated and a flame envelope is created. By injecting a mixture of fuel and air that includes excess air into the center of the flame envelope, combustion of the central portion of the flame envelope is accelerated which allows more fuel to be flared with a given flame envelope height. The invention also includes a ground flare and a method of flaring fuel with a flare burner.

An Inhaler for delivering an aerosolized dose of a powdered drug for inhalation by a user is disclosed. The inhaler comprises a drug entrainment device vice to a receive a package having a piercable lid containing a dose to be delivered, the device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when a package is located in the inhaler, a secondary piercing member to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the package via said peripheral openings to scour the interior of a pierced package such that all or substantially all of the dose is entrained in the gas and flows out of the package via the drug outlet tube. A medicament pack is also disclosed.

An oxy-fuel burner arrangement having a first conduit having a nozzle aperture with an aspect ratio, D1 / D2, of greater than or equal to about 2.0. The first conduit is arranged and disposed to provide a first fluid stream, where the first fluid stream is a combustible fuel. The burner arrangement further includes at least one second conduit arranged and disposed to provide a second gas stream circumferentially around the first fluid stream, where the second gas stream includes oxygen. A precombustor is arranged and disposed to receive the first fluid stream and second gas stream where an oxy-fuel flame is produced. The geometry of the nozzle aperture and the cross-sectional geometry of the first conduit are dissimilar.

An exhaust system for expelling air from a building includes an outlet nozzle that improves entrainment of ambient air with the building exhaust air. The improved air entrainment results in increased exhaust air dilution and plume height to better disperse the exhaust air away from the building. The nozzle has an H-shaped outlet configuration with two lateral outlet sections joined by a central transverse outlet section. The nozzle has a pair of outer lateral walls, a pair of outer transverse walls, and a pair of sloped inner lateral walls that angle outwards from near an inlet end of the nozzle towards corresponding outer lateral walls. The nozzle can be part of the exhaust system at the outlet side of the exhaust fan within a windband that aids in entraining ambient air with the exhaust air exiting the nozzle.

The invention relates to an air-assisted wide plant protection unmanned helicopter and an operation method implemented by the same. The air-assisted wide plant protection unmanned helicopter comprises an air-assisted air duct device, a support frame, a storage battery, an electric diaphragm pump, a chemical tank and a foldable spray rod. The air-assisted air duct device, the support frame, the storage battery, the electric diaphragm pump, the chemical tank and the foldable spray rod are mounted on an unmanned helicopter, spray nozzles are distributed on the foldable spray rod, the foldable spray rod is divided into a middle main spray rod, first spray rods and second spray rods, and the first spray rods and the second spray rods are arranged on the two sides of the foldable spray rod. Downwash airflow formed by the unmanned helicopter is accelerated by the aid of conical pipeline structures, and high-speed airflow flows through vertical flat columnar air pipes and then flows into horizontal flat tapered air pipes; an air curtain is formed on the spray rods in the width direction of the spray rods by the high-speed airflow, the air speed of the air curtain is downwardly uniformly distributed, accelerating, carrying and secondary atomizing effects can be realized for fog-drops by the air curtain, and the fog-drops are atomized by the spray nozzles. The air-assisted wide plant protection unmanned helicopter and the operation method have the advantages that the working widths of the spray rods are increased, so that the chemical application rate can be increased under the condition that the chemical liquid carrying amount of the unmanned helicopter is unchanged, the operation time can be shortened, the chemical application efficiency can be improved, and power consumption of the unmanned helicopter can be reduced.

The invention relates to a cross orifice typed injection nozzle for an internal-combustion engine and belongs to an oil injection device of a fuel system of the internal-combustion engine. The nozzle is a precision coupling formed by an injector valve body and an injector valve. The head of the injector valve body is provided with at least one cross sub-orifice and each cross orifice is formed by crossing and collecting of at least two sub-orifices. As the collection of fuel in the sub-orifices of the cross orifice can form intense disturbance, the turbulent kinetic energy is increased and the atomization is improved; as an outlet of the cross orifice is formed by the collection of the sub-orifices, the flow area of the outlet is less than the sum of the outlet areas of all the sub-orifices, the injection nozzle is characterized by improving discharge coefficient like an analogous V-shaped gradually shrinking orifice. In brief, the crossing of the sub-orifices increases the internal flow, improves the turbulent intensity, causes the cross orifice to improve atomization, improves the quality of the mixed gas and leads to rapid, sufficient and perfect combustion, thus being beneficial to the further improvement of the economic performance, discharging performance and kinetic performance of the motor.

The invention discloses an olefin polymerization reactor. The reactor comprises a polymerization kettle body, a stirring device, a feeding port and an overflowing port, wherein the polymerization kettle body is composed of a reaction segment, an enlargement segment, and a connection segment located between the reaction segment and the enlargement segment; the stirring device is arranged at the center inside the polymerization kettle body, is used for stirring raw materials in the kettle, and is composed of a transmission device, a stirring shaft and a stirring turbine which are sequentially connected; the feeding port is arranged on the side wall of the reaction segment of the polymerization kettle body and is used for adding solvent, catalyst and the like; and the overflowing port is used for discharging the slurry and controlling the liquid level in the kettle. By using the reactor, the entrainment can be effectively reduced.

The invention discloses a gas-liquid mixing device and application thereof. The gas-liquid mixing device comprises a gas-liquid mixing device shell, wherein a plurality of parallel gas-liquid mixing assemblies are contained in the shell; the gas-liquid mixing assemblies are of a cavity structure, and are sequentially provided with preliminary gas-liquid mixing sections, accelerating gas-liquid mixing sections and gas releasing sections in the material flow direction, and the sections communicate with one another; the accelerating gas-liquid mixing sections are of a conical contraction structure, the starting ends of the accelerating gas-liquid mixing sections are connected with high-pressure gas dispersing equipment, gas phase outlets for releasing escaped gas are formed in the middle rearpart of the gas releasing sections, liquid phase outlets are formed in the tail ends of the gas releasing sections. The 'oil-covering-gas type' gas-liquid mixed fluid formed by the gas-liquid mixingdevice is homogeneous and stable, the liquid mass transfer area can be greatly increased, the gas-liquid reaction process can be enabled to continuously maintain a higher rate, and the problems of large amount of liquid circulation, high material consumption and energy consumption, long residence time and the like existing in the prior art are solved.

An inclined conveyor for a combine harvester has at least two endless traction elements (drive elements) which extend in parallel to one another and which are interconnected by carrier bars. The carrier bars are situated transversely with respect to the conveying direction. The inclined conveyor is configured so that the load on the drive element is reduced due to the low weight of the carrier bars and a lower conveying speed. The carrier bars on the conveyor have at least two rods situated one on top of the other, have a circular cross section, and are fastened to the drive element as individual rods.

The invention discloses a rotary water jet flow nozzle structure for a washing gun. A head body combination port, a liquid medicine spraying pipe, a spiral generator, a liquid medicine recycling pipe,a first protection cover and a second protection cover are included. The liquid medicine spraying pipe is sleeved with the liquid medicine recycling pipe, the liquid medicine spraying pipe and the liquid medicine recycling pipe are connected in a washing gun cavity, and the head end of the liquid medicine recycling pipe is connected with the position of the head body combination port. The spiralgenerator is fixedly connected to the outlet position in the liquid medicine spraying pipe through a support. The outlet position of the liquid medicine spraying pipe is provided with a conical cavitystructure and a transition area. The first protection cover is connected with the liquid medicine spraying pipe. The second protection cover is connected with the liquid medicine recycling pipe. Thespiral generator is adopted so that longitudinal impact flowing can be converted into three-dimensional flowing with a certain tangential speed, the jetted fluid has the longitudinal speed and also has radial and tangential component speed, rotary jet flow is formed, the jet flow entrainment and mixing are enhanced through washing liquid, the impact area is enlarged, the impact pressure intensityis reduced, and a more ideal wound surface washing effect is achieved.

A fuel lance for a burner of a combustor has a fuel lance body defining a fuel flow passage and a liquid fuel tip attached thereto and in flow communication with fuel flow passage. The liquid fuel tip has a fuel outlet and an array of air passages having outlets which are arranged outside a blank sector of a circumference around the fuel outlet, the blank sector defined by an angle from 30° to 160°. A burner includes the fuel lance and the igniter and a main air flow passage to direct at least a part of a main air flow over the fuel lance and over the igniter, the blank sector has a centre-line angled between +120° and −120° from a radial line from the axis and passing through the fuel lance. A method includes rotating the fuel lance between a start-up condition and a second condition.

The invention relates to a local forced circulation desalting method for a multi-effect evaporating system, belonging to the field of chemical separation engineering. The local forced circulation desalting method comprises the following steps: each effect evaporator maintains a boiling point temperature of a material liquid and evaporates continuously under an operating pressure, and a dissolved salt reaches a saturation state and is separated out; solid substances such as separated salt enter a local forced circulation pipeline under the effects of sedimentation and material liquid circulation of heat exchange and gas-liquid separation for the evaporating system, and part of salt-containing material liquid is extracted from the local forced circulation pipeline under the effect of a circulation pump; solid and liquid phases with different densities are separated in a cyclone hydraulic separator and are discharged to a salt slurry collecting tank under the effect of centrifugal force;and the liquid phase extracted from the cyclone hydraulic separator returns to the entrance of the local forced circulation pipeline again so as to complete the local external circulation of primary material liquid. The method can transfer the solid salt separated from the material liquid out of the multi-effect evaporating system in time, and can be used for the heterogeneous system separation procedure of the multi-effect evaporating system with separated solids.

An exhaust system for expelling air from a building includes an outlet nozzle that improves entrainment of ambient air with the building exhaust air. The improved air entrainment results in increased exhaust air dilution and plume height to better disperse the exhaust air away from the building. The nozzle has an H-shaped outlet configuration with two lateral outlet sections joined by a central transverse outlet section. The nozzle has a pair of outer lateral walls, a pair of outer transverse walls, and a pair of sloped inner lateral walls that angle outwards from near an inlet end of the nozzle towards corresponding outer lateral walls. The nozzle can be part of the exhaust system at the outlet side of the exhaust fan within a windband that aids in entraining ambient air with the exhaust air exiting the nozzle.

The airlift pump with helical flow pattern includes a nozzle body having a fluid passage therethrough. A plurality of air or gas injector nozzles surrounds the central passage. The outward side of each nozzle is tangent to the fluid passage wall through the body to produce circumferential flow in the fluid passage. Each of the air injector nozzles is also inclined in the direction of flow through the body, the tangential inclination resulting in a helical flow pattern through the body. The centrifugal force generated by the circumferential and helical flow through the body results in a pressure decrease through the core of the fluid passage, thereby enhancing entrainment of fluid into the device to increase its efficiency. The fluid passage through the nozzle body is devoid of any structure, and the inlet end of the passage is smoothly radiused to further increase the efficiency of the device.

The invention is the outer cyclone inner direct flow main combustor device and belongs to the combustor device of boiler. The purpose of the invention is to produce the backflow area and the stable combustion. One device of the invention is to evenly arrange the delivery blades between the primary air diverting tube and the delivery tube, and the inside diameter of the delivery tube is as 0.5-0.7 times as the diameter of the primary air diverting tube. The other device is to evenly arrange the delivery blades in the inner chamber of the primary air diverting tube, and the axial height of the delivery blades is as 0.1-0.5 time as the semi-diameter of the primary air diverting tube. The invention through changing the opposite angles, the number, the length and the height of the delivery blades and the lengths and the section of the delivery tube to change the intensity and the size of the cyclone amount to adapt the characteristics of different fuels and ensure the stability and economy of the boiler combustion. The invention has simple structure and convenient equipment.

An inclined conveyor for a combine harvester has two drive elements which define a conveying direction and revolve in a conveying duct. Conveying duct is divided into an overshot return duct and an undershot conveying duct by a separating element situated between the upper run and the lower run of the drive element. Drive element is interconnected by carriers situated transversely with respect to conveying direction that convey harvested crop in undershot conveying duct. The difference in speed between the carrier bars and harvested crop stream is eliminated, and at least reduced, by additional acceleration of harvested crop stream. Carrier bars serve as carriers, and as acceleration elements for the harvested crop. That is because the cross section of each of the carrier bars viewed in conveying direction, occupies at least 30% of the smallest internal cross section of undershot conveying duct.

The invention discloses a combustion system suitable for flexible peak regulation of a four-corner tangential boiler, and an operation method thereof. According to the system, a layer of swirling pulverized coal burner is compactly arranged between two layers of direct-current pulverized coal burners, and air-powder mixtures of the swirling burner are from an independent air-powder conveying system; Coal for combustion of the swirling burner is high-quality coal with high volatile components and heat values, and primary air and secondary air of the swirling burner are both swirl flow; and theswirl strength can be adjusted by 0-100% through a pull rod. When the boiler needs to be subjected to deep peak regulation, the turbulent burner and the adjacent direct-current pulverized coal burnerare put into operation; When the boiler operates at medium and high loads, the swirling burner is stopped, and only secondary air is introduced to participate in boiler combustion; and the situation that the boiler nozzle is coked or burnt out at medium and high loads is avoided. According to the combustion system and the operating method thereof, the deep peak regulation capacity of the coal-fired boiler can be effectively improved, and the consumption capacity of a power grid for new energy power generation is improved.

A liquid applicator comprises a guide roll for guiding a sheet, and a slit die, having a slit with an opening extending in an axial direction of the guide roll, for applying a liquid to a surface of the sheet guided by the guide roll. On the rear side of the opening in a rotating direction of the guide roll, the slit die further includes a front lip having a concave surface corresponding to the guide roll. The front lip opposes the guide roll by such a length FA in the rotating direction RD of the guide roll as to have a central angle θ of 0.95° to 3.0° about an axis O of the guide roll.

The invention relates to a wet-process magnetic separator and a waste catalyst wet-process recovery system, and relates to the technical field of catalyst recovery. A permanent magnet cylinder is fixedly connected to the rack, the field intensity of the permanent magnet cylinder is gradually increased from bottom to top, and a notch is formed in the uppermost end of the permanent magnet cylinder and is formed in the axial direction of the permanent magnet cylinder; an eccentric cylinder is arranged on the rack in a penetrating manner, the eccentric cylinder is arranged in the permanent magnet cylinder in a penetrating manner, and the axis of the eccentric cylinder deviates towards the upper side of the permanent magnet cylinder; and the rack is further provided with a driving mechanism used for driving the eccentric cylinder to rotate. A collecting mechanism is further arranged on the machine frame and comprises a hopper arranged in the eccentric cylinder in a penetrating mode. According to the invention, the magnetic material is not easy to fall off from the eccentric cylinder, so that the recovery rate of the magnetic material is improved.

The invention discloses a feeding and oxygenating integrated device for fishery, and relates to the technical field of agriculture. In order to solve the problems that an existing oxygen generator isfixed in position, a large number of oxygen generators are needed, and the function is single, the feeding and oxygenating integrated device specifically comprises a floating body, a sealing cover isfixedly installed at the top end of the floating body, a discharging mechanism and a supporting frame are fixedly installed at the top end of the sealing cover, a storage tank is fixedly installed between the discharging mechanism and the supporting frame, and a control mechanism and a storage battery pack which are electrically connected with each other are fixedly installed in the supporting frame; and a guide mechanism is fixedly mounted at the bottom end of the floating body, and a conveying pump electrically connected with the control mechanism is fixedly mounted in the guide mechanism. According to the feeding and oxygenating integrated device, when water is subjected to flowing oxygenation, water flow can carry and spray out feed falling from the discharging mechanism, then the feeding work of fish food is completed, oxygenation and feeding are combined, oxygenation and feeding are conducted on a pond in the moving process, the feeding range is widened, the oxygenation range iswidened, and the breeding cost is reduced.

The invention relates to a local forced circulation desalting method for a multi-effect evaporating system, belonging to the field of chemical separation engineering. The local forced circulation desalting method comprises the following steps: each effect evaporator maintains a boiling point temperature of a material liquid and evaporates continuously under an operating pressure, and a dissolved salt reaches a saturation state and is separated out; solid substances such as separated salt enter a local forced circulation pipeline under the effects of sedimentation and material liquid circulation of heat exchange and gas-liquid separation for the evaporating system, and part of salt-containing material liquid is extracted from the local forced circulation pipeline under the effect of a circulation pump; solid and liquid phases with different densities are separated in a cyclone hydraulic separator and are discharged to a salt slurry collecting tank under the effect of centrifugal force;and the liquid phase extracted from the cyclone hydraulic separator returns to the entrance of the local forced circulation pipeline again so as to complete the local external circulation of primary material liquid. The method can transfer the solid salt separated from the material liquid out of the multi-effect evaporating system in time, and can be used for the heterogeneous system separation procedure of the multi-effect evaporating system with separated solids.

According to the combustion chamber, an annular flange protruding in the direction of an oil nozzle is arranged on the circumferential wall face of a combustion chamber pit, and the annular flange is located below the upper top face of a piston and is closer to the center line of the pit than the upper edge of the combustion chamber pit. The edge of the protruding top end of the annular flange is connected with the upper edge of the combustion chamber pit through a pit transition face, and the pit transition face comprises first to fourth flow guide faces which are sequentially connected from inside to outside in the radial direction of the combustion chamber pit and gradually get close to the upper top face of the piston. The second flow guide face and the third flow guide face form an annular boss protruding towards the bottom face of the air cylinder cover, the first flow guide face and the second flow guide face form a first annular groove, and the third flow guide face and the fourth flow guide face form a second annular groove. According to the scheme, oil beams form jet flow through the annular boss, the oil-gas mixing uniformity in the combustion chamber is improved, meanwhile, an air interlayer is formed in the second annular groove, the heat transfer loss of the piston is reduced, and the engine efficiency is improved.

An Inhaler for delivering an aerosolised dose of a powdered drug for inhalation by a user is disclosed. The inhaler comprises a drug entreinment device to a receive a package having a piercable lid containing a dose to be delivered, the device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when a package is located in the inhaler, a secondary piercing member to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the package via said peripheral openings to scour the interior of a pierced package such that all or substantially all of the dose is entrained in the gas and flows out of the package via the drug outlet tube. A medicament pack is also disclosed.

The invention relates to an air-assisted wide plant protection unmanned helicopter and an operation method implemented by the same. The air-assisted wide plant protection unmanned helicopter comprises an air-assisted air duct device, a support frame, a storage battery, an electric diaphragm pump, a chemical tank and a foldable spray rod. The air-assisted air duct device, the support frame, the storage battery, the electric diaphragm pump, the chemical tank and the foldable spray rod are mounted on an unmanned helicopter, spray nozzles are distributed on the foldable spray rod, the foldable spray rod is divided into a middle main spray rod, first spray rods and second spray rods, and the first spray rods and the second spray rods are arranged on the two sides of the foldable spray rod. Downwash airflow formed by the unmanned helicopter is accelerated by the aid of conical pipeline structures, and high-speed airflow flows through vertical flat columnar air pipes and then flows into horizontal flat tapered air pipes; an air curtain is formed on the spray rods in the width direction of the spray rods by the high-speed airflow, the air speed of the air curtain is downwardly uniformly distributed, accelerating, carrying and secondary atomizing effects can be realized for fog-drops by the air curtain, and the fog-drops are atomized by the spray nozzles. The air-assisted wide plant protection unmanned helicopter and the operation method have the advantages that the working widths of the spray rods are increased, so that the chemical application rate can be increased under the condition that the chemical liquid carrying amount of the unmanned helicopter is unchanged, the operation time can be shortened, the chemical application efficiency can be improved, and power consumption of the unmanned helicopter can be reduced.

A liquid fuel lance for a burner of a combustor of a gas turbine combustor, a liquid fuel system incorporating the liquid fuel lance and a method of operating the liquid fuel system. The liquid fuel lance has an elongate liquid fuel lance body and a liquid fuel tip. The elongate liquid fuel lance body includes a fuel flow passage and at least a first air passage and a second air passage. A liquid fuel tip defines a fuel outlet and arranged about the fuel outlet at least a first outlet and a second outlet to which air is independently supplied by the first air passage and the second air passage respectively, and wherein the amount of air supplied to the first air passage is variable.

The invention relates to a waterproof structure of a building exterior wall top, and relates to the technical field of building construction. The waterproof structure comprises a top wall, a female wall and a waterproof layer, wherein the top wall is connected with the female wall; the waterproof layer is laid on the top wall; a drainage channel is embedded between the top wall and the female wall; the drainage channel is lower than the waterproof layer; a drainage pipe is embedded in the female wall; the drainage pipe communicates with the drainage channel; the drainage channel is further provided with a filtering mechanism used for filtering impurities; the filtering mechanism comprises a filtering roller, a scraper and a driving assembly; the filtering roller is rotatably connected to the drainage channel; the outer circumferential surface of the filtering roller abuts against the side wall, away from the female wall, of the drainage channel; the scraper is arranged on the side, close to the female wall, of the filtering roller; one end face of the scraper abuts against the outer circumferential surface of the filtering roller; and the direction of the speed of the contact portion of the filtering roller and the drainage channel is opposite to the direction of the speed of rainwater flowing through the portion between the drainage channel and the filtering roller. The waterproof structure of the building exterior wall top has the advantages that the probability that the filtering mechanism is blocked can be reduced, the drainage efficiency of the building exterior wall top is improved, and the probability that corrosion and moisture leakage occur on the wall top is reduced.