Swirling nozzle

FIELD: process engineering.

SUBSTANCE: invention relates to heat-and-power engineering and may be used in coolers, scrubbers and other heat exchange hardware that sprays fluids and ejects gases. Nozzle comprises distribution chamber with orifice, adapter with outlet and fluted swirler. Flutes on outer surfaces diverge from axis to periphery and smoothly flex to change into converging channels to communicate with complex-shape inner chamber and to change into blind cylindrical hole. Chamber top section features cylindrical shape while mid section is shaped to convex parabolic surface. Converging channels are directed along tangent toward swirler inner chamber without through bore along its axis. Adapter outlet is shaped to Venturi nozzle. Hemispherical ledges are arranged at nozzle confuser section and inner chamber convex parabolic section. Simultaneously, notable rarefaction is created inside swiftly swirling vortex to cause intensive fluid evaporation and to force the cone outward saturated with vapours that facilitates fluid cooling.

EFFECT: higher ejection capacity.

4 dwg

 

The invention relates to a power system and can be used as a device for dispersing liquids in Packed columns, cells irrigation, sprinkling basins and the like of heat and mass transfer units.

The most effective use of the nozzle in the scrubbers, cooling towers and other contact ejection apparatus of the type in which, along with a sprinkling of liquids, it is necessary to provide a leak large amounts of gas, because the torch dispersed liquid created by the nozzle, has a high induction capacity.

Known injector, which includes a housing with a mixing chamber, a nozzle and liner-swirl with a through axial bore and inclined channels in the peripheral part. The outlet nozzle has a cylindrical shape (see patent RU No. 2205703, C2, 7 WW 1/34, date published 2003.06.10).

This jet has the following disadvantages.

Circumferential component of velocity of movement of the peripheral jets is significantly reduced when they collide in the mixing chamber with the Central part of the stream, moving straight through the axial bore of the liner, so that the effect of centrifugal forces on the structure formation of the torch will be proportionally reduced. In addition, the nozzle creates a significant hydraulic impedance of the active ingredient is the position of the flow due to all channels flowing parts have sharp edges on the input and output.

Famous jet-swirl nozzle that is closest in its technical solutions - prototype. This nozzle includes a housing with camera turbulence and nozzle. Located inside the swirler has a tangential channels and axial flow in the form of radial grooves on the end surface facing to the camera turbulence (see as. SU, No. 657858 AND VW 1/34 1979).

This nozzle has a number of disadvantages.

The input flow in the nozzle is immediately confronted with the end wall of the swirl, resulting in retarded, changes its direction and distributed in the peripheral channels. Further, getting into the camera turbulence, the flow again hits the flat end wall of the chamber. Such clashes along with the movement of constrained channels, the total area which is several times smaller than the area of the inner section of the hull, lead to significant pressure losses.

The small slope of the channels of the liner does not provide the rapid rotation of the flow in the chamber turbulence, which is one of the conditions for the existence of active vortex.

The nozzle in the form of a cylindrical hole in a thin wall of the chamber turbulence does not detect the opening angle of the torch, affecting the efficiency of the nozzle.

Sharp edges is and the input and output of all flow channels also increase the additional energy loss, that in combination with other hydraulic resistance significantly reduce the flow of liquid through the nozzle.

In heat-exchanging apparatus of the contact type process is performed by direct contact of liquid and gas phases. Therefore, among other things, on the efficiency of the unit has a significant impact ejecting the ability torch dispersed liquid. Studies have shown that filled the flame generated by the burner, taken as a prototype, has a low coefficient of ejection. The maximum ejecting the capacity of the torch, which has the shape of a hollow cone with an angle 34-40.

The purpose of this invention is the production of jets with minimal hydraulic resistance, providing a fine dispersion liquid and a high rate of ejection.

The design of the nozzle shown in figures 1-4. Figure 1 presents a General view of the nozzle Assembly. Figure 2 - section of figure 1. The nozzle includes three main parts: distribution chamber position 1, nozzle position 2 and swirl 3. All three parts are molded from polymeric materials. Distributing chamber with the shank item 1 and the nozzle 2, is collected by using a threaded connection, form a nozzle body, which is installed inside the swirler 3. Threaded with the unity provided with sealing rings pos.4.

In the upper part of the nozzle 2 has an outlet opening 5 with smooth contours, made in the form of a Venturi nozzle. On the confused side of this nozzle are hemispherical protrusions pos.6.

The design of the swirler 3 depicted in figures 3 and 4. Figure 3 - General view of the swirl. Figure 4 - section 3. From the distribution chamber swirl is divergent from the axis to the periphery of the gutter pos.7 semi-cylindrical shape. Side nozzle swirl has an internal cavity pos.8 in the form of a body of rotation of a complex configuration. The upper part of the volume of the cavity is cylindrical, the middle portion is a convex surface parabolically form, turning into a cylindrical blind hole along the axis. Cavity pos.8 connected with gutters pos.7 smoothly curved channels position 9. Moreover, the channels are oriented tangentially to the cylindrical part of the inner cavity of the swirl. On the parabolic surface of the internal cavity of the swirl, as well as on the confused side of the nozzle, are the projections 10 a hemispherical shape.

The nozzle operates as follows. The fluid flow entering the nozzle through the shank, the volume of distribution chambers item 1 is divided into parts and moving troughs pos.7, at the end of which the line current is smoothly bent, and flows Estrella is conducted through the channels position 9 in the inner cavity of the swirl pos.8. Flows in channels acquire significant speedup due to their gradual narrowing. Part of the flow coming out of the channels, then move along a circular trajectory, forming a vortex in the volume of the cavity pos.8, rotating at very high speed. Then, the thread is pushed through the hole 5 in the neck which, on the basis of the law of conservation of momentum, the speed increases even more, because the diameter of the vortex in the neck of the nozzle is much less than its diameter inside the cavity. After the neckline rotating flow diffuser nozzle section that determines in large measure the angle of the torch. At the same time rotating in the inner cavity flow washes hemispherical protrusions pos.6 and 10, resulting in a large volume of the vortex additionally there are small local vortices. These vortices generate a lot of strongly swirling jets that define the fine structure and form of the torch in the form of a hollow cone.

Due to the rapid rotation of the flow in the Central part creates a zone of significant depression. The pressure drop is accompanied by intensive evaporation, and hence the active cooling fluid already in the volume of the torch. The presence of large quantities of steam in the plume is clearly visible when the nozzle.

Thus, large with the Aresti, the complex nature of the motion of particles, the fine dispersion liquid and the General structure of the torch to provide a high coefficient of ejection and promote intensive cooling of the liquid.

Nozzle containing a distribution chamber with the shank, a nozzle with the outlet and swirl with grooves on the outer surface diverging from the axis to the periphery, and then gently curving and turning in narrow channels, communicating with the internal cavity of a complex configuration, the upper part of which is cylindrical, the middle part has the shape of a convex parabolic surface, passing in blind cylindrical hole, wherein the tapering channels are oriented tangentially to the inner cavity of the swirl, not having the axis of the through hole, and the hole of the nozzle has the shape of a Venturi nozzle, and confused nozzle section and a convex parabolic part of the inner cavity of the swirl protrusions are hemispherical in shape.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to fluid and solution sprayers. Nozzle comprises case with swirling chamber and atomiser. Case is composed of union with fluid feed hole and coaxial cylindrical sleeve rigidly jointed thereto. Centrifugal swirler composed of blind cylindrical insert is connected to case lower section and aligned therewith. Insert has at least three tangential inlet cylindrical bores. Radial-flow swirler has communicated and aligned axial, taper and cylindrical throttling bores. Radial-flow swirler is arranged in case cylindrical chamber to form annular cylindrical chamber to feed fluid to radial-flow swirler tangential fluid inlets and communicated with two chambers: conical and cylindrical chambers aligned with said swirler. Chambers are arranged so that outlet of one chamber makes inlet for another chamber. Said tangential fluid inlets represent channels arranged tangentially to cylindrical insert inner surface. Swirling intensifier with inner helical thread is rigidly secured to cylindrical chamber edge and aligned therewith.

EFFECT: higher efficiency due to increased spray cone.

2 dwg

FIELD: process engineering.

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EFFECT: longer life.

19 cl, 16 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to fluid and solution sprayers. Confuser is rigidly secured to nozzle body bottom edge. Confuser inner surface has helical thread with trapezoidal-shape high-pitch directed opposite fluid flow swirling.

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FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to fire-fighting equipment. The installation for fire-extinguishing with water curtain comprises a main water feeder with the filter lowered to the source, and connected to the main pipeline. Besides the installation comprises a feeding system mounted parallel to the line of the main water feeder and comprising pipeline of feeding of the auxiliary water feeder and the auxiliary (automatic) water feeder. The control and signaling system comprises an alarm control valve and a warning device, such as in the form of an alarm horn. The main pipeline is connected to the network of distribution pipelines in which the drenchers are mounted. Each drencher is made in the form of a sleeve with a supply pipe, a valve and an atomising element. The housing is made in the form of a central hub with external hexagonal and internal cylindrical surfaces. From two end surfaces of the central hub a female screw is made. An inlet branch is mounted axially to one of the end surfaces through the safety nut. The spraying element is mounted on the other end surface, which is made as a hub which inner diameter is equal to the inner diameter of the inlet branch. The hub is mounted to the socket, by means of arcs located on a conical surface, which is a part of a spherical surface bounded by the inner and outer hemispheres. The center of the hemisphere is on the line connecting the central hub axes and the inlet branch axis. On the spherical surface from its outer side at least three slots are made, which axes are located on the lines radial with respect to the hemisphere. In the peripheral part of the hemisphere there are at least three orifices which centers lie in a plane parallel to the center line of the hemisphere, which is perpendicular to the axis of the inlet branch. The blocking valve is located axially to the spraying element, which is made in the form of a ball fixed by a spring located inside the central hub, to the conical surface, made at the end of the inlet branch facing the sawing element.

EFFECT: increased efficiency of fire-fighting due to introduction of high-speed elements in the overall automatic fire-fighting system circuit.

2 dwg

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to fire-fighting equipment. The installation for fire-extinguishing with water curtain comprises a main water feeder with the filter lowered to the source, and connected to the main pipeline. Besides the installation comprises a feeding system mounted parallel to the line of the main water feeder and comprising pipeline of feeding of the auxiliary water feeder and the auxiliary (automatic) water feeder. The control and signaling system comprises an alarm control valve and a warning device, such as in the form of an alarm horn. The main pipeline is connected to the network of distribution pipelines in which the drenchers are mounted. Each drencher is made in the form of a sleeve with a supply pipe, a valve and an atomising element. The housing is made in the form of a central hub with external hexagonal and internal cylindrical surfaces. From two end surfaces of the central hub a female screw is made. An inlet branch is mounted axially to one of the end surfaces through the safety nut. The spraying element is mounted on the other end surface, which is made as a hub which inner diameter is equal to the inner diameter of the inlet branch. The hub is mounted to the socket, by means of arcs located on a conical surface, which is a part of a spherical surface bounded by the inner and outer hemispheres. The center of the hemisphere is on the line connecting the central hub axes and the inlet branch axis. On the spherical surface from its outer side at least three slots are made, which axes are located on the lines radial with respect to the hemisphere. In the peripheral part of the hemisphere there are at least three orifices which centers lie in a plane parallel to the center line of the hemisphere, which is perpendicular to the axis of the inlet branch. The blocking valve is located axially to the spraying element, which is made in the form of a ball fixed by a spring located inside the central hub, to the conical surface, made at the end of the inlet branch facing the sawing element.

EFFECT: increased efficiency of fire-fighting due to introduction of high-speed elements in the overall automatic fire-fighting system circuit.

2 dwg

FIELD: process engineering.

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EFFECT: higher efficiency.

2 dwg

Fluid sprayer // 2481159

FIELD: process engineering.

SUBSTANCE: invention relates to spraying of fluids and may be used in fire fighting, agriculture, etc. Hollow cylindrical sprayer casing has outer thread for distributing pipeline to be connected thereto for feed fluid and inner thread to connection to taper nozzle. Casing and nozzle make two aligned inner chambers. Cylindrical chamber serves for feeding fluid. Taper chamber formed by the surface of nozzle truncated cone makes pressure chamber. Nozzle has a jet arranged at side opposite fluid feed side and consists of cylindrical throttling orifice and tapered orifice with expansion directed toward the object. Thread is cut at taper orifice surface. At least, two rows of cylindrical throttling orifices are made at nozzle taper side surface. Axes of orifices are perpendicular to nozzle side surface. Each line has, at least, three throttling orifices. Projections of said orifices in horizontal plane are spaced apart by 7.5-60. Plate baffle is secured to nozzle end surface axially symmetric about aforesaid casing. Said baffle consists of, at least, two parallel plates arranged perpendicular to said casing. First plate is secured to nozzle end surface by, at least, three fasteners including screw, spacer shims arranged between the plate and nozzle end surface. First plate has central opening. Second plate is secured to first one by, at least, three fasteners including screw, spacer shims arranged between the plates.

EFFECT: higher efficiency of spraying.

2 cl, 1 dwg

Fluid sprayer // 2481159

FIELD: process engineering.

SUBSTANCE: invention relates to spraying of fluids and may be used in fire fighting, agriculture, etc. Hollow cylindrical sprayer casing has outer thread for distributing pipeline to be connected thereto for feed fluid and inner thread to connection to taper nozzle. Casing and nozzle make two aligned inner chambers. Cylindrical chamber serves for feeding fluid. Taper chamber formed by the surface of nozzle truncated cone makes pressure chamber. Nozzle has a jet arranged at side opposite fluid feed side and consists of cylindrical throttling orifice and tapered orifice with expansion directed toward the object. Thread is cut at taper orifice surface. At least, two rows of cylindrical throttling orifices are made at nozzle taper side surface. Axes of orifices are perpendicular to nozzle side surface. Each line has, at least, three throttling orifices. Projections of said orifices in horizontal plane are spaced apart by 7.5-60. Plate baffle is secured to nozzle end surface axially symmetric about aforesaid casing. Said baffle consists of, at least, two parallel plates arranged perpendicular to said casing. First plate is secured to nozzle end surface by, at least, three fasteners including screw, spacer shims arranged between the plate and nozzle end surface. First plate has central opening. Second plate is secured to first one by, at least, three fasteners including screw, spacer shims arranged between the plates.

EFFECT: higher efficiency of spraying.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to fluid sprayers and may be used in machine building, chemical and food industries. Screw is inserted into casing to make cylindrical chamber above said screw and aligned with diffuser and communicated therewith. Solid screw outer surface is composed of two connected surfaces. One of said surfaces represents, at least, single-thread helical groove with LH or RH thread located inside said casing. Second smooth surface represents a body of revolution axisymmetrically connected with spraying disc located perpendicular to casing axis to extend beyond casing bottom end. Both straight line and n-order curve may make a generating line of said surface.

EFFECT: higher efficiency and simplified design.

2 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to fluid sprayers and may be used in machine building, chemical and food industries. Screw is inserted into casing to make cylindrical chamber above said screw and aligned with diffuser and communicated therewith. Solid screw outer surface is composed of two connected surfaces. One of said surfaces represents, at least, single-thread helical groove with LH or RH thread located inside said casing. Second smooth surface represents a body of revolution axisymmetrically connected with spraying disc located perpendicular to casing axis to extend beyond casing bottom end. Both straight line and n-order curve may make a generating line of said surface.

EFFECT: higher efficiency and simplified design.

2 cl, 2 dwg

FIELD: oil and gas industry.

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EFFECT: higher efficiency.

3 dwg

FIELD: sanitary equipment, particularly for domestic, medical and transport use.

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3 cl, 6 dwg

FIELD: nozzles, particularly for cleaning reservoir bottom from residual viscous, high-viscous and hardening liquids and for removing deposits near connection pipes of fire-extinguishing systems adapted for extinguishing fire in reservoirs.

SUBSTANCE: device bottom is provided with radial eccentrically located distributors formed as plates having chamfers on the first plate sides. Plate length is less than device bottom radius. Plate height exceeds width of gap defined by device body and bottom.

EFFECT: increased efficiency along with maintaining design effective volume of the reservoir, reduced reservoir damage due to corrosive action.

2 dwg

Cascade nozzle // 2253517

FIELD: heat-and-power engineering, particularly for medium and deep water spraying in cooling towers, scrubbers, gas and steam condensing plants, gas-cleaning systems, for spraying high-viscous liquids or liquids with considerable content of impurities.

SUBSTANCE: nozzle comprises connection pipe and deflecting members formed so that cone angle of each next deflecting member is less than that of previous one. Nozzle has conical body. Deflecting members made as deflecting washers are arranged along vertical axis between at least two fixing posts. Deflecting washers have inner orifices decreasing in direction away from inlet connection pipe. Each deflecting washer is made as truncated cone. Outermost deflecting washer is of hemispheric shape and adapted for water spraying into area located under nozzle connected with pipeline by straight and adapter couplings. To increase hydraulic capacity and system flexibility cascade nozzles with lesser inlet connection pipe diameters are substituted for ones with greater diameters.

EFFECT: increased cooling efficiency, simplified structure, improved flexibility, minimizing of nozzle clogging.

4 dwg

FIELD: environmental protection.

SUBSTANCE: furnace comprises combustion chamber whose bottom section is provided with the igniter and branch pipe for supplying fuel, intermediate section is provided with the branch pipe for supplying waste, and top section is provided with the exhaust branch pipe connected with the duct for discharging flue gases. The casing is mounted around the chamber to define the air passage between the casing and outer side of the chamber. The passage is in communication with the bottom section of the combustion chamber and branch pipe for supplying fuel. The casing is provided with the air supply branch pipe. The branch pipe for supplying fuel receives at least one pair of vortex cyclonic chambers whose openings for air supply are made in opposite tangential directions.

EFFECT: enhanced environmental safety.

4 cl, 1 dwg

FIELD: irrigation equipment, in particular, fine-dispersion or drop sprinkling equipment used in mobile and stationary sprinkler units for producing of sprays with droplet sizes admissible for irrigation of wide range of farm crops.

SUBSTANCE: sprinkler unit has hollow cylindrical casing with partition wall, wherein guiding rod is rigidly fixed centrally of partition wall. Conical deflector with curved grooves is fixed on guiding rod for displacement along it. Location of conical deflector in predetermined position on guiding rod is provided by means of adjustment nut which may is fixed by lock nut. In order to form uniform liquid film around perimeter of conical deflector, grooves are provided in such a manner that they do not reach edge by distance equal to width of casing outlet opening ring, when conical deflector is lifted to maximal extent. Fluoroplastic layer is built in friction surface of conical deflector.

EFFECT: increased efficiency in producing of finely dispersed uniform spray, simplified construction and enhanced reliability in operation.

3 dwg

Contrast sprays set // 2257883

FIELD: medicine.

SUBSTANCE: invention relates to equipment for carrying out health-improving and curing hydrothermal treatment. Proposed contrast sprays set has sprays panel made of two non-communicating tubular systems consisting of collecting and operating pipes installed parallel to each other at preset angle to sides of sprays panel. Operating pipes are provided with great number of holes pointed to side of operating zone. Panel is installed on supports for reciprocating in plane of panel under action of drive.

EFFECT: provision of convenience in treatment of patient, and accurately checking of main parameters.

4 cl, 6 dwg

FIELD: spraying equipment, particularly hydrodynamics of delivery pipeline adapted to be used in different industries.

SUBSTANCE: device comprises pump, liquid vessel, barrel with control arm and flexible hoses. Barrel includes valve with grooves to provide working liquid jet bypass in reverse direction to pump inlet. Device also has means aimed at reduction of losses and minimization of force to be applied to valve control arm. More particularly, valve grooves are inclined at 60° angle one to another, device comprises collars for valve securing having outer and inner packing members with seats and providing free valve rotation about valve axis. The rotation is performed around pin with packing member. Pin diameter is considerably lesser than valve diameter.

EFFECT: simplified structure, improved performance and increased safety.

4 cl, 3 dwg

Liquid sprayer // 2258567

FIELD: liquid spraying equipment, particularly used in fire-fighting, sanitary and watering facilities, for liquid fuel combustion, etc.

SUBSTANCE: sprayer has body with channels for liquid jets forming and liquid supply nipple. The channels are directed so that axes thereof cross beyond channel outlets in sprayed liquid flow generation space. Minimal distance between crossing axes does not exceed hydraulic channel radius Rh value. Distance between outlet channel sections and sprayed liquid flow generation space defined by plane with minimal distance between crossing channel axes preferably does not exceed 80Rh. Sprayer body may be provided with chamber shaped as solid of revolution and installed beyond outlet channel sections. Axial channel may be formed in the sprayer body. Channels may have equal cross-sections. Sprayer in accordance with the second embodiment has one channel with cross-sectional area, which is not more than 2 times greater than that of another one.

EFFECT: increased uniformity of droplet intensity and dispersion over flow section, reduced energy consumption.

1 cl, 7 dwg

FIELD: spraying or atomizing.

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EFFECT: improved design.

5 cl, 8 dwg

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