83results about How to "Improved swirl" patented technology

The device includes a pair of flat planar vanes securely mounted within a cylindrical housing. The vanes have a medial slit extending from the center to a longitudinal end of the vane. The vanes are interconnected at the slits so that they are in criss-cross positioning. The vanes are axially angled so that when positioned in an intake air duct the vanes impart a swirling motion to the air entering the engine providing more complete mixing of the air and fuel and when positioned in an exhaust passageway the vanes impart a swirling motion to the exhaust gases exiting the engine providing scavenging of the exhaust gases.

A fuel nozzle for a gas turbine engine is disclosed which includes a nozzle body having a longitudinal axis, an elongated annular air passage defined within the nozzle body, and a plurality of circumferentially spaced apart axially extending swirl vanes disposed within the annular air passage, wherein each swirl vane has multiple joined leads and a variable thickness along the axial extent thereof.

A fire suppressing gas generator includes a cylindrical housing comprising an array of discharge ports distributed generally uniformly therearound; a cylindrical filter disposed within the housing and spaced from the interior wall of the housing; a plurality of azide-based propellant grains inside the cylindrical filter; and at least one ignition device associated with the propellant grains. The propellant grains when ignited by the ignition device generate a fire suppressing gas which passes through the filter and out of the discharge ports of the cylindrical housing for delivery into a space.

The invention relates to an ultrasonic gas cyclone condensing and separating device applied to the field of gas purification, in particular to the field of natural gas dewatering and heavy hydrocarbon separation. Natural gas generates a cyclone by spiral cyclone blades, enters an Laval nozzle to adiabatically expand to an ultrasonic velocity and form low temperature and low pressure so that water and heavy hydrocarbon in the natural gas are condensed into liquid drops; meanwhile, a higher tangential velocity is generated to fling the water and the heavy hydrocarbon which are condensed to the wall surface under the action of a strong cyclone field; liquid flows into a liquid-collecting cavity from a liquid shunt hole and is discharged from a liquid outlet by a liquid-discharging pipe; and dry gas enters a circular diffuser pipe, is recovered by pressure and is discharged from a dry gas outlet. The shrinking section of the Laval nozzle of the device is designed by using a bicubic curve method to reduce flowing loss; the spiral cyclone blades can enhance the cyclone, generate greater tangential velocity and have good enhance effect. The device has simple structure, easy process and stable and reliable operation without movable parts.

A plate convex is formed on the upstream side of the injection hole plate and a plate concave is formed on the downstream side of the injection hole plate so as to form a pair together, a minimum of one set of the plate convexes and the plate concaves are formed, and the injection holes are arranged so that the radial centerline which connects the centerline of the plate convex from the axial center of the fuel injection valve does not overlap the center of the injection hole on an upstream flat surface of the injection hole plate, and the plate convex is arranged so as to straddle the injection hole on the upstream flat surface of the injection hole plate, and the top surface of the plate convex.

A bolt-on replacement intake manifold has an asymmetrical plenum with a first end including an inlet, a closed terminal end, a concave top surface and a convex bottom surface; a flange; and a plurality of runners extending from the bottom surface of the plenum and terminating at the flange. The plenum defines an interior space in flow communication with the runners. The bottom surface of the plenum is wider than he top surface. The plenum initially widens from the inlet to the first runner and then begins to narrow from the first runner toward the last runner adjacent to the closed terminal end. The runners are tapered, curved, and vary in length. The intake manifold causes air to exit each of the plurality of runners at substantially the same angle. The manifold balances airflow across each runner and increases swirl inside the cylinders enhancing fuel economy, power output, and torque.

The invention discloses a novel multi-blade centrifugal fan. The novel multi-blade centrifugal fan comprises a volute, a volute tongue and a plurality of fan blades fixed in the volute, wherein one lateral side of the volute tongue is fixed on the inner lateral side of the air outlet of the volute, the other lateral side of the volute tongue is a concave face, a plurality of air guide grooves are formed in the concave face, the two end faces of each fan blade are arc-shaped faces, a zigzag structure is arranged on one arc-shaped face of each fan blade, a bionic non-smooth structure is arranged on the other arc-shaped face of each fan blade, and airflow sequentially passes the bionic non-smooth structures and the zigzag structures and then is discharged from the air outlet of the volute. The novel multi-blade centrifugal fan has the advantages that the air quantity and air pressure of the fan are increased effectively, the noise of the fan is lowered effectively, and the efficiency of the fan is increased effectively.

The invention relates to a multicylinder internal combustion engine (1) comprising intake valves and exhaust valves that are provided with at least one additional valve (10) for each cylinder (C1, C2, C3, C4, C5, C6), a preferably tubular pressure container (9) with a gas chamber (90) into which extend ducts (11) originating from the valves (10) such that gas can be exchanged between individual cylinders (C1, C2, C3, C4, C5, C6) when the valves (10) are actuated. The pressure container (9) is provided with a device (17) for cooling the quantities of gas exchanged between individual cylinders (C1, C2, C3, C4, C5, C6). In order to increase the cooling capacity, the cooling device (17) encompasses at least one cooling pipe (17) which is axially inserted into the pressure container (9) and is penetrated by coolant. The outer jacket (171) of the cooling pipe (170) borders the gas chamber (90), the gas that is exchanged between individual cylinders (C1, C2, C3, C4, C5, C6) flowing around said outer jacket (171).

This invention concerns a flow seal (42) for location between opposing components of a fluid flow machine, such as rotor (44) and stator (46) components of a turbomachine (10). The seal (42) has an upstream fin (24) depending from one of components (44) towards an opposing surface (28) of the other (46) of the components and a wall (26) downstream of the fin (24) defining a flow cavity between the fin (24) and wall (26). The fin (24) terminates at a fin tip (24A) so as to define a gap between the fin tip (24A) and the opposing surface (28), through which a leakage flow enters the flow cavity in use. The seal (42) also has a flow guide member (30A) located in the cavity, the flow guide member (30A) being arranged to define a flow path that promotes a vortical flow regime in the cavity. The flow cavity geometry is altered to promote a desired vortical flow regime, such as by way of a projection (39) in an intermediate wall portion of the flow cavity. The vortical flow regime may hinder flow leakage.

The invention relates to an air supersonic-velocity condensation and cyclone separation spray pipe. The air supersonic-velocity condensation and cyclone separation spray pipe mainly comprises a central body, a cyclone blade, a contraction section and an expansion section, and is mainly applied to air purification, particularly the field of natural gas dehydration and heavy hydrocarbon separation.The cyclone blade is designed by an elliptical blade method, and can effectively strength cyclone; the central body can effectively reduce eddy dissipation, and the curve of the contraction section can guarantee that the velocity of air flow can be stably increased to sound velocity; the contraction section has a gradually expanded structure, and simple linear design in the conventional device isabandoned; and the curve design can avoid the influence of expansion waves, and the spray pipe is good in aerodynamic performance. In the spray pipe, the velocity of the air flow is supersonic velocity, the residence time is very short, hydrate is avoided, and chemical agents and relative recovery systems are not needed to be added. Moreover, the spray pipe has the advantages of supporting unmanned operation, along with no movement component, compact structure, small occupied space and the like, is particularly suitable for development of oil and gas fields of boundary and desert, and offshore oil and gas fields, and has a wide application range.

A uniflow engine includes a cylinder having a cylinder wall, an inlet channel, an extension of a central axis of the inlet channel first intersecting the cylinder wail in a first portion of the cylinder and next intersecting the cylinder wail in a second portion of the cylinder opposite the first portion of the cylinder, an intake air gallery, the intake air gallery having a gallery wall and being in flow communication with the inlet channel, and a plurality of intake ports extending between the cylinder wail and the gallery wall, at least some of the intake ports having different areas at the cylinder wall measured perpendicular to longitudinal axes of the intake ports, and wherein an area of at least one in take port in the first portion of the cylinder is larger than an area of at least one intake port in the second portion of the cylinder.

In a method for controlling an inlet valve of an internal combustion engine having at least one cylinder with at least a first inlet valve and a second inlet valve, wherein the closing time of the first inlet valve is adjustable and the first inlet valve is so controlled that, at a first engine speed, the first inlet valve is closed before the closing of the second inlet valve and, at a second engine speed which is higher than the first engine speed, the first inlet valve is closed after the closing time of the second inlet valve.

The invention discloses an anti-blocking molten iron blowing desulfurization spray gun with a multi-strand cyclone dispersion function. The anti-blocking molten iron blowing desulfurization spray gun is composed of a connection section, a gun body section and a blowing section, wherein the connection section is composed of a connection flange and a composite gun core in sequence, and the outer walls of the gun body section and the blowing section are a refractory material gun lining formed through pouring a refractory material; and a gun body outer diameter D of the blowing section is greater than a gun body outer diameter d of the gun body section, the composite gun core sequentially comprises an inner insertion tube, a main tube and a reinforcing tube from the inside to the outside, an inner insertion tube connector is installed on the inner wall of the bottom end of the reinforcing tube, the bottom end surface of the inner insertion tube is level with the bottom end surface of a graphite blowing tube, and wrapped with the refractory material gun lining to form a spray gun nozzle, and grooves are formed at the nozzle. According to the invention, the inherent shortages of poor reaction kinetics performance and high blocking frequency of a nozzle existing in a conventional spray gun are effectively solved through said structural design and optimization for the related structural dimensions; and meanwhile, the anti-damage capacity of the blowing section and the gun body section of the spray gun is effectively reinforced, and the purpose of prolonging the service life of the spray gun is achieved.

The invention relates to a multi-fluid mixer which comprises a gas mixing base and a mixing core. The mixing core is arranged inside the gas mixing base; the gas mixing base comprises a top plate and a bottom plate, an outer cavity wall, a middle cavity wall and an inner cavity wall are coaxially arranged between the top plate and the bottom plate, a first fluid cavity is formed between the outer cavity wall and the middle cavity wall, a second fluid cavity is formed between the middle cavity wall and the inner cavity wall, and a gas mixing cavity is formed inside the inner cavity wall; and the mixing core comprises a middle support, a first fluid gas mixing blade and a second fluid gas mixing blade, one end of the first fluid gas mixing blade is fixedly connected with the outer wall of the middle support, the other end of the first fluid gas mixing blade (22) penetrates the inner cavity wall to be fixedly connected with the middle cavity wall, one end of the second fluid gas mixing blade is fixedly connected with the outer wall of the middle support, and the other end of the second fluid gas mixing blade is fixedly connected with the inner cavity wall. By means of the design, mixing of three kinds of fluid can be achieved, and the uniform mixing integration level is high.

An internal combustion engine having one or more modules each employing fluidly-communicating, oscillating, power cylinder and air cylinder. The power and air cylinders oscillate about separate, individually supporting sets of trunnions positioned non-linearly with respect to each other and permitting the passage of air therethrough. The air cylinder includes a pre-combustion chamber for the purpose of withholding the delivery of a portion of compressed air to the power cylinder until all spent gases have been evacuated from the power cylinder. Means for enhancing fuel dispersion and/or vaporization is provided whereby cavities are provided in the cap of both the air cylinder and the power cylinder that are in selective synchronous fluid communication. A blower is provided to not only assist in the elimination of exhaust from the combustion chamber but also purge the combustion piston cap cavity of exhaust backflow prior to the delivery of fresh charge

The invention provides a diffusion device, a fan and a dust collector. The diffusion device comprises a base and a plurality of stationary blades, wherein the multiple stationary blades are sequentially arranged in multiple rows in the axial direction of the base, multiple stationary blades are arranged in each row, the multiple stationary blades in each row are arranged in the circumferential direction of the base, the cross section of the base is circular, and the thickness of each stationary blade in at least one row of stationary blades in the multiple rows of stationary blades is not constant from the head part to the tail part of the stationary blade. According to the diffusion device, by arranging the multiple rows of stationary blades in the circumferential direction of the base, airflow is gradually guided through the multiple rows of stationary blades, the absolute speed of the airflow is reduced, and then the pressurization effect is improved; and the thickness of each stationary blade in at least one row of stationary blades in the multiple rows of stationary blades is not constant from the head part to the tail part of the stationary blade, so that the flow separation can be relieved, the flow separation loss can be reduced, the diffusion effect can be improved, and the pneumatic noise can be lowered.