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WO2013174240A1 - 多管复式引射器 - Google Patents

多管复式引射器 Download PDF

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Publication number
WO2013174240A1
WO2013174240A1 PCT/CN2013/075831 CN2013075831W WO2013174240A1 WO 2013174240 A1 WO2013174240 A1 WO 2013174240A1 CN 2013075831 W CN2013075831 W CN 2013075831W WO 2013174240 A1 WO2013174240 A1 WO 2013174240A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
mixing
ejector
central
annular
Prior art date
Application number
PCT/CN2013/075831
Other languages
English (en)
French (fr)
Inventor
韩铁夫
韩笃坤
Original Assignee
Han Tiefu
Han Dukun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Han Tiefu, Han Dukun filed Critical Han Tiefu
Publication of WO2013174240A1 publication Critical patent/WO2013174240A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/467—Arrangements of nozzles with a plurality of nozzles arranged in series

Definitions

  • This invention relates to a mixed flow injection device, and more particularly to a multi-tube multiple ejector for mixed fluid injection.
  • the ejector is a device that uses a higher pressure primary fluid to ignite a low pressure (or no pressure) secondary fluid to complete a primary fluid pumping secondary fluid for mixed flow injection or delivery. Because the ejector has no moving parts, it is reliable and widely used in fluid equipment in many fields.
  • a typical ejector currently consists of a main fluid inlet tube, a nozzle, a secondary fluid inlet, a mixing chamber, a throat or a mixed diffuser.
  • the secondary fluid introduced into the mixing chamber is drawn into the mixing tube by the jet of the main fluid nozzle, and the primary and secondary fluids are output from the mixed diffuser via mixed pressure equalization.
  • Such ejector generally has a central nozzle and a single elongated hybrid diffuser.
  • the advantage of the single-tube ejector is that the structure is simple and reliable, but it has the following defects:
  • the existing ejector mainly relies on the turbulent diffusion of the jet in the long stroke of the mixing tube, so that the main fluid and the secondary fluid are mixed with each other.
  • the turbulent diffusion of the jet requires a process of development and reinforcement in the mixing tube, so the ejector must have an elongated mixing tube (or mixed diffuser), and a large flow ejector requires Large-diameter mixing tubes, the larger the diameter, the greater the need to greatly increase the length of the mixing tube, resulting in the disadvantage of the larger size and weight of the larger size ejector. This is very disadvantageous for many installations where small volume and light load are required.
  • Patent No. ZL200920106414.7 a fixed multi-nozzle jet pump patent, discloses a circular multi-tube parallel ejector, which is provided with a small short tube jet in the outer annular sleeve, each small-shooting flow device
  • a single nozzle ejector is formed by a nozzle and a throat (mixing tube), and their outlets are connected to an intermediate manifold for confluence output; it is installed under the well, and high-energy power liquid is used to illuminate the low-pressure formation liquid.
  • the device is actually a parallel ejector pump that is output from a small jet to the intermediate manifold.
  • the multi-tube parallel ejector pumps do not change one ejector using a single circular mixing
  • the main structure of the tube Although a plurality of small ejector are used in parallel to form a large ejector pump, it is only a multi-tube parallel pump that does not add a new ejector mixing function, and its structure is only suitable for underground oil recovery, which cannot be satisfied. In some cases, the requirements for small and lightweight high-efficiency large-flow ejector are required.
  • the object of the present invention is to overcome the shortcomings of the existing ejector structure that the uniaxial dimension is too long and the ejection efficiency is low, and provides a compact axial size, high volatility, good performance at large flow rates, and primary and secondary flow parameters. Multi-tube double ejector with mixed hooks.
  • the technical solution of the present invention is:
  • the multi-tube multiple ejector comprises a composite annular ejector of the front stage, a central ejector and a total ejector of the latter stage;
  • the central ejector is coaxially disposed on the composite annular ejector Inside, the inlets of the two share the main fluid inlet pipe;
  • the total ejector is disposed behind the composite ring ejector and the central ejector, and is integrally connected with the latter two concentrically;
  • the central ejector has a central nozzle, a central mixing chamber and a central mixing tube; the central nozzle is located at the center of the top of the central mixing chamber, the inlet end of which is directly connected to the main fluid inlet pipe, the outlet nozzle is opposite the tapered outlet of the central mixing chamber and the nozzle is retained a central mixing tube that is smoothly passed through the tapered outlet of the central mixing chamber; a secondary fluid inlet is disposed around the side wall of the central mixing chamber;
  • the composite annular ejector has a plurality of circumferentially uniform outer peripheral nozzles and an equal number of outer peripheral small mixing tubes, a peripheral mixing chamber and a large annular mixing tube; each peripheral nozzle inlet end communicates with the main fluid inlet tube and extends out
  • the peripheral mixing chamber is provided with a secondary fluid inlet;
  • the outer peripheral small mixing tube has an inlet end located in the outer circumference mixing chamber and the outlet end is directly connected to the large annular mixing tube; each of the peripheral nozzles and the corresponding outer peripheral small mixing tube The center is centered and the nozzle distance is left;
  • the total ejector has a main nozzle, a total mixing chamber and a total mixing output tube; the main nozzle is located at the center of the composite annular ejector, the front end of the main nozzle is connected to the outlet end of the central mixing tube, and the rear end of the main nozzle extends into the center of the total mixing chamber
  • the main nozzle is centered with the constricted conical outlet of the total mixing chamber and has a nozzle distance; the inlet of the total mixing chamber is connected to the output of the large annular mixing tube of the composite annular ejector, and the outlet of the total mixing chamber is connected to the total mixed output tube. .
  • a portion of the main fluid is injected into the composite ring through the peripheral nozzle of the composite annular ejector
  • the secondary fluid of the outer mixing chamber of the ejector, the outer peripheral small mixing tubes that enter the composite annular ejector are mixed and output a first-stage mixed flow to the total mixing chamber of the total ejector through the large annular mixing tube of the composite annular ejector Secondary fluid; another portion of the primary fluid is injected through the central nozzle of the central ejector into the central mixing chamber of the central ejector, and the secondary fluid is injected toward the central mixing tube of the central ejector, and from the total of the central mixing tube outlet
  • the main nozzle of the ejector ejects a primary mixed flow main fluid, and the main nozzle ejects a primary mixed flow main fluid to illuminate the primary mixed flow secondary fluid outputted by the large annular mixing tube in the total mixing chamber of the total ejector, and enters the total
  • the pre-composite annular ejector in the multi-tube multiple ejector of the present invention is a parallel composite ejector with multiple composite ejectors having the same large annular mixing tube output port, that is, each composite ejector is composed of A peripheral nozzle, a peripheral small mixing tube is formed in series with a large annular mixing tube.
  • the main fluid is easy to pull the pumping fluid only by the turbulent viscous force, so the ejector is relatively high at this time, and multiple outer small mixing tubes are connected in parallel.
  • the present invention employs a plurality of peripheral small mixing tubes and has a monomer-connected, series-combined structure in which both ends are passed through and output through a large annular mixing tube.
  • the composite annular ejector adopts a plurality of short outer peripheral small mixing tubes to be connected to a large annular mixing tube for output, and can fully exert the auxiliary pumping traction of the main fluid to the secondary fluid in each small peripheral mixing tube of each unit.
  • the mixing effect, and the mixed flow output from each of the outer small mixing tubes enters the large annular mixing tube, and the volume is expanded and the density is small, resulting in an increase in the dynamic pressure before and after the outlet of the large annular mixing tube, thereby effectively preventing the pressure from being increased by the rear end.
  • the resulting ejector is reversed.
  • the composite annular ejector adopts a plurality of short outer peripheral small mixing tubes at the outlet end and is connected to a large annular mixing tube for output. When the outer peripheral small mixing tube exits into the large annular mixing tube, the density and pressure difference are generated.
  • the lateral migration mixing causes the large annular mixing tube to converge toward the output jet around the main nozzle of the total ejector, thereby increasing its contact area with the main fluid jet of the main ejector main nozzle, which enhances the total Heat and mass transfer and mixing efficiency of primary and secondary flows in the ejector.
  • the first-stage mixed flow output of the pre-stage composite annular ejector of the present invention has a higher suction rate and a shorter mixing tube length and a larger working flow rate and a wider working adaptation than a general single-tube ejector. country.
  • the pre-composite annular ejector has: a single outer small mixing tube has a strong circular suction force, and a plurality of outer small mixing tubes can increase the total mixing amount of the secondary fluid, so the pre-combined annular ejector It has the advantages of strong total suction force, large secondary fluid total mixing amount and strong anti-backflow capability.
  • the post-stage total ejector in the multi-tube multiple ejector of the present invention uses the main nozzle in the total mixing chamber to converge the output of the central ejector to the mixed flow of the large annular mixing tube of the pre-combined annular ejector. They join together and pressurize the mixed flow output again in the total mixing output tube. Since the mixed flow output from the large annular mixing tube has a large momentum in the axial direction, the mixing of the mixed flow with the central ejector is naturally enhanced.
  • the ejector is mixed, so the mixing efficiency of the total ejector is high, so that the total mixing tube length can be shortened, and the overall structure is more compact, so that the performance at a large flow rate is good, the overall volume can be reduced, and the overall weight can be reduced.
  • the central ejector is disposed on the main fluid component and the inner tube assembly; the main fluid component is disposed with the main fluid inlet pipe at the top of the top of the main fluid component, and the central nozzle is disposed downwardly.
  • the lower part of the body assembly is provided with an annular distribution sleeve; the inner cavity of the annular distribution sleeve is docked with the conical reduced diameter inlet of the upper end of the inner tube assembly as the central mixing chamber of the central ejector; and the circumferential distribution wall of the annular distribution sleeve is provided with a plurality of horizontal and vertical cross-isolation a secondary fluid orifice and a primary fluid orifice; each of the primary fluid orifices passes through the primary fluid inlet tube and is connected to the peripheral nozzle; the secondary fluid orifices pass from the periphery into the central mixing chamber;
  • the nozzle outlet nozzle is directed toward the tapered reduced diameter inlet of the inner tube assembly; the central tube of the tapered end of the tapered tube inlet of the inner tube assembly is connected to the central mixing tube;
  • the composite annular ejector is disposed on the outer tube loop sleeve and the inner tube assembly; a plurality of the outer peripheral nozzles are evenly distributed around the front end of the inner tube assembly, and the plurality of outer peripheral small mixing tubes are evenly distributed on the outer tube loop sleeve And corresponding to the above-mentioned peripheral nozzle--; the peripheral mixing chamber is disposed between the annular transverse wall of the front end of the inner tube assembly and the front end of the outer tube collar, and the large annular mixing tube is sandwiched at the outer end of each outer small mixing tube.
  • the total ejector is disposed at a rear portion of the outer tube collar and a rear portion of the inner tube assembly; the main nozzle is formed by an outlet of a rear portion of the inner tube assembly; the total mixing chamber and the
  • the total mixed output pipe is composed of a pipe extending stepwise from the rear of the outer pipe collar, and the shrinking cone inner cavity at the front portion of the pipe constitutes the total mixing chamber, and the shrinking cone outlet of the pipe is smoothly straight through
  • the straight pipe section of the diameter is a total mixing pipe, and the straight pipe section can directly output or directly pass through the divergent pipe section of the gradually expanding diameter, and the single total mixing pipe or the total mixing pipe and the diffusing pipe together constitute the total mixed output.
  • the top wall of the large annular mixing tube is a cone-shaped surface that is inclined toward the center, and the outlet ends of the respective outer small mixing tubes are disposed on the surface of the tapered ring.
  • the outlet ends of each of the outer small mixing tubes are disposed on the surface of the tapered ring to form an oblique section-shaped outlet, so that the mixed output flow of each outer small mixing tube can be turned toward the oblique section exit direction, thereby causing the outflow of each outer small mixing tube from four weeks.
  • the jets are all concentrated toward the main nozzle, and the ability of the main fluid to collide, shear, and entrain the mixed fluid secondary fluids of each of the outer small mixing tubes is enhanced, thereby improving the ejection efficiency of the multi-tube double ejector.
  • the second annular mixing tube has the second structural form: the large annular mixing tube comprises an annular groove formed by a flat groove or a wedge groove provided on the top annular surface of the large annular mixing tube, and the annular groove passes through each outer small mixing tube.
  • the center of the outlet is and is consistent with it.
  • the large annular mixing tube is a combination of a conventional "large annular mixing tube” and an “annular groove", that is, a large annular mixing tube provided with an annular groove, which has both a "large annular mixing tube” and an annular groove.
  • the annular groove allows the outlet jets of the respective outer small mixing tubes to communicate with each other before leaving the exit end of each of the outer small mixing tubes, first performing lateral migration and preliminary homogenization distribution, and completely enclosing the annular groove at the exit end of the small mixing tube In the pore area, after entering the "large annular mixing tube", the outlet jets of the outer peripheral small mixing tubes are further homogenized and mixed, which is more advantageous for increasing the contact area with the main fluid jet of the main nozzle of the total ejector, which can strengthen Heat and mass transfer and mixing efficiency of primary and secondary fluids in the total ejector.
  • the annular groove can replace the large annular mixing tube work h
  • the third structural form of the large annular mixing tube is: the large annular mixing tube is short, and all of the outer small mixing tubes or the mutually spaced semi-fining end orifices are provided with the same direction capable of ejecting the swirling flow on the same side.
  • Inclined chamfered semicircular flare the centerline of the long axis of each semicircular flare is substantially the same as the centerline of the toroidal top wall of the large annular mixing tube Cut or consistent.
  • the semi-circular flare of the same direction inclined chamfer on the same side of the outer orifice of the outer small mixing tube may cause the outlet jet to rotate or cause the outlet swirl to collide with and rub against the outlet straight jet without the inclined chamfer.
  • the round small mixing tube outlet may also adopt a slanting flat opening, that is, the circular J, the mixing tube or all of the spaced-apart semi-fining end openings are configured to be obliquely sprayed.
  • the inclined flat mouth, each of the inclined flat sides is substantially identical to the tangential direction of the annular center line of the large annular mixing tube. The benefits are similar to the semicircular expansion of the circular small mixing tube with a slanted chamfer.
  • connection sleeve is disposed between the outer circumference of the annular distribution sleeve and the outer tube collar, and the connection sleeve surrounds the outer circumference mixing chamber to form a closed loop-shaped cavity, and the closed-loop cavity side wall is provided with a secondary fluid inlet. tube.
  • This connection sleeve structure facilitates the input of one or two low or no pressure secondary fluids from the lateral position, and is suitable for most uses of the multi-tube multiple ejector of the present invention.
  • a plurality of through holes are uniformly distributed in the inner tube assembly on the inner side of each of the outer peripheral nozzle outlets, and the through holes communicate the central mixing chamber with the outer ring inner chamber side.
  • the structure in which the central mixing chamber and the outer mixing chamber are in inner ring communication by using a plurality of through holes is matched with the connecting sleeve, so that each of the outer peripheral nozzles outputs the main fluid while the inner fluid from the central mixing chamber enters the outer mixing chamber is performed inside. Winding, wrapping the secondary fluid input from the secondary fluid inlet of the connecting sleeve sidewall secondary fluid inlet into the peripheral mixing chamber on the outside side, can improve the mixing efficiency of each outer small mixing tube of the composite annular ejector.
  • the axis of each of the peripheral nozzles and the corresponding peripheral small mixing tube is parallel to the central axis of the multi-tube multiple ejector; the central mixing tube in the center of the inner tube assembly and the outer tube ring The center hole is threaded. Rotate the integral number of the connecting thread 1/N ⁇ , N is the number of small peripheral mixing tubes, and keep the outer peripheral nozzles and the corresponding outer small mixing tube inlets still centered, and then make the central mixing tube and the outer tube ring set to each other.
  • the nozzle distance of the main ejector main nozzle from the contracted conical outlet of the total mixing chamber can be adjusted synchronously, and the flared conical inlet of the composite annular ejector outer peripheral nozzle and the corresponding outer peripheral small mixing tube The nozzle distance.
  • the reference ratio and output pressure of the primary and secondary fluids of the ejector can be changed to some extent, so as to find and determine the structural parameters of the multi-tube double ejector required for the most suitable working conditions, and design Fixed structure that is no longer adjustable; or used to adjust performance parameters that adapt to changing conditions to achieve optimal operating conditions/performance parameters.
  • the outer peripheral small mixing tubes coaxially corresponding to each of the outer peripheral nozzles are evenly distributed on the outer tube ring sleeve in a tapered shape; the peripheral lines of the outer peripheral small mixing tubes and the composite cascade jet pump The central axis is inclined or intersected with the same direction; the central hole of the outer tube sleeve is screwed or closely or fixedly connected with the central tube of the inner tube assembly.
  • This configuration allows the composite annular ejector to be self-polymerized by the primary mixed flow provided by the large annular mixing tube and produces a small angle of oblique impact with the main fluid jet jet ejected from the main nozzle, thereby acting on the primary fluid jet and the secondary fluid.
  • the mixed contact shears the contact area and causes strong frictional disturbances and mixing between the fluids, thereby enhancing the mixing efficiency of the total ejector, thereby shortening the total mixing tube length.
  • the pipe extending in a stepped manner at the rear of the outer pipe collar is an independent elongated pipe
  • the elongated pipe inlet is a total mixing chamber inlet with a contracted cone
  • the outer pipe ring is The end portion is threadedly connected to the elongated tube inlet end. Changing the threaded connection position adjusts the distance from the main nozzle to the inlet of the main mixing chamber.
  • the mixing ratio and output pressure of the primary and secondary fluids of the ejector can be changed to some extent in order to obtain the best operating conditions/performance parameters.
  • the multi-tube double ejector of the present invention is compared with the existing single-tube ejector: the existing single-mixing tube ejector has a low ejector rate and a low mixing efficiency of the mixing tube at a large diameter, and requires a long passage.
  • the mixing tube produces sufficient turbulence to allow the primary and secondary streams to be thoroughly mixed.
  • the multi-tube multiple ejector of the present invention uses a main fluid to input a high-pressure main fluid from a front end portion, and introduces a low-pressure or non-pressure secondary fluid from a side position, and outputs a mixed flow from the tail portion;
  • the graded composite annular ejector is placed over the central ejector and then cascaded to a new structure on the final stage total ejector.
  • the large annular mixing tube of the composite annular ejector outputs a peripheral mixed flow, and the secondary fluid input as the total ejector of the latter stage collides with each other in the central mixing flow of the central ejector output from the main nozzle in the total mixing chamber, and mutually ignites each other.
  • the multi-tube double ejector of the present invention overcomes the shortcomings of the single-tube ejector, especially the large-size single-tube ejector, which has a long axial length and a low pulsation rate, and can be only a central jet than the existing single-tube ejector Free diffusion reaches the priming effect of the wall suction It is much better. This allows the multi-tube multiple ejector of the present invention to have the dual advantages of the above-described front and rear stage ejector.
  • the multi-tube multiple ejector of the present invention can be used for evacuation, secondary fluid pressurization, primary and secondary fluid mixing.
  • the primary fluid may be a higher pressure gas, liquid or gas-liquid mixed fluid
  • the secondary fluid may be a multi-phase mixed fluid such as a gas with a pressure or a no pressure, a liquid or a gas mist and a soot.
  • the multi-tube multiple ejector of the present invention mixes the single-tube single-tube ejector into a parallel mixing of a central ejector with a smaller diameter and a multi-tube composite annular ejector at the periphery of the central ejector Then, the superimposed mixing of the total ejector is cascaded, and multiple composite ejectors are connected in series by a plurality of mixing tubes in parallel and two stages of mixing tubes. Due to the difference in pressure and density of the outlet mixed flow rate, the outflow strong collision and vortex mixing of the inner and outer mixing tubes increase the mutual priming and secondary acceleration mixing functions, effectively solving the low ejector efficiency of the existing ejector. The problem.
  • the ejector rate of the primary fluid to the secondary fluid and its mixing efficiency can be significantly increased, and the secondary fluid to the primary fluid ejector ratio can be increased. Therefore, it can also enhance the total suction capacity and work efficiency.
  • the multi-tube double ejector of the invention has multiple advantages such as compactness of the structural cylinder, short relative weight and size, high total ejector and mixed flow efficiency, large flow capacity of the treatment fluid, strong resistance to flow, and the like, and is particularly suitable for doing High-flow high-performance mixers have a wide range of applications.
  • FIG. 1 is a half cross-sectional structural view of a first embodiment of a multi-tube multiple ejector according to the present invention.
  • Figure 2 is a schematic view showing the structure of the A-A section of Figure 1.
  • Figure 3 is a schematic view showing the structure of the B-B section of Figure 1.
  • FIG. 4 is a half cross-sectional view showing the second embodiment of the multi-tube double ejector of the present invention.
  • Figure 4.1 is a schematic view showing the structure of the top ring wall of the large annular mixing tube shown by the K-K cross section in Figure 4.
  • Figure 5 is a half cross-sectional view showing the third embodiment of the multi-tube double ejector of the present invention.
  • Figure 5.1 is a structural view of the circular small mixing tube outlet shown by CC in Figure 5.
  • Figure 5.2 is a schematic diagram of the T-T section on Figure 5.1.
  • Figure 5.3 is another structural view of the circular small mixing tube outlet shown in Figure 5 by D-D.
  • Figure 5.4 is a schematic diagram of the 0-0-0 section expansion in Figure 5.3.
  • One embodiment of the multi-tube multiple ejector of the present invention employs the input of a high pressure main fluid from the front end portion, a low pressure or no pressure secondary fluid input from the side position, and a pressurized mixed flow output from the tail portion.
  • Its structure as shown in Fig. 1, comprises a composite annular ejector 100a of the front stage, a central ejector 100b and a total ejector 100c of the latter stage; the main components are a main fluid component 1, an inner tube assembly 2.
  • the top (front end) of the main fluid assembly 1 is provided with a main fluid inlet pipe 11 at the center, a central nozzle 15 downward, and a circular distribution sleeve 12 at the lower portion of the main fluid assembly 1, as shown in Fig. 2, and the annular distribution sleeve 12 is provided on the peripheral wall.
  • the transverse secondary fluid orifices 13 and the plurality of vertical primary fluid orifices 14 are cross-isolated from the primary fluid orifices 14.
  • the inner cavity of the annular distribution sleeve 12 is a central mixing chamber 17, and the central nozzle 15 is disposed at the top center of the central mixing chamber 17, and a circumferential groove connecting the central mixing chamber 17 is disposed between the outer periphery of the central nozzle 15 and the peripheral wall of the annular distribution sleeve 12. 16.
  • Each of the secondary fluid orifices 13 passes from the peripheral wall of the annular distribution sleeve 12 through the annular groove 16 into the central mixing chamber 17.
  • the main fluid orifices 14 in the main fluid assembly 1 pass obliquely upward through the main fluid inlet pipe 11 through the enlarged diameter section 111 of the lower end of the main fluid inlet pipe 11.
  • the outer diameter of the enlarged diameter top plate of the inner tube assembly 2 is fixed and sealed in the bottom end of the annular distribution sleeve 12, and the top end (upper end) of the inner tube assembly 2 is provided with a tapered reduced diameter inlet 23; the front end of the reduced diameter inlet 23
  • the central mixing chamber 17 on the main fluid assembly is docked, and the straight tube type central tube whose end of the reduced diameter inlet 23 is smoothly connected is the central mixing tube 24.
  • the central nozzle 15 on the main fluid assembly 1 is fed straight through the main fluid inlet pipe 11, and the outlet nozzle of the central nozzle 15 is directed toward the reduced diameter inlet 23 of the inner tube assembly 2 that abuts the central mixing chamber 17.
  • the central ejector 100b of the front stage of the multi-tube multiple ejector is invented.
  • the annular cross wall 21 of the front end (upper end) of the inner tube assembly 2 has a main fluid annular groove 22 corresponding to the main fluid porous passage, and six screw holes are arranged at the bottom of the main fluid annular groove 22, and are installed in each screw hole.
  • Each of the outer peripheral nozzles 4 is a conical necking nozzle.
  • the bottom of the annular distribution sleeve 12 of the main fluid assembly 1 is sealingly connected to the annular transverse wall 21 at the front end of the inner tube assembly 2.
  • the primary fluid annular groove 22 communicates with the primary fluid inlet pipe 11 via respective primary fluid orifices 14 in the annular distribution sleeve 12, and the primary fluid annular groove 22 communicates downwardly with the inlet of each peripheral nozzle 4.
  • the inner tube assembly 2 is provided with an external thread 25 at the center to the bottom of the center tube and a screw hole at the center of the front end portion 31 of the outer tube collar.
  • the annular peripheral wall is evenly distributed with six vertical outer small mixing tubes 33 with flared cone inlets 32.
  • the space between the front end portion 31 of the outer tube collar 3 and the rear end surface of the annular lateral wall 21 of the inner tube assembly 2 constitutes the outer peripheral mixing chamber 5.
  • the peripheral mixing chamber 5 is laterally connected to the secondary fluid inlet, and the outer peripheral nozzle 4 at the top ring wall of the outer peripheral mixing chamber 5 is respectively centered with a corresponding flared inlet 32 of the outer peripheral small mixing tube 33 and has a nozzle distance. .
  • Each peripheral nozzle 4 is coaxial with a corresponding peripheral small mixing tube 33, and this axis is parallel to the axis of the multi-tube multiple ejector of the present invention.
  • the annular space between the inner ring wall of the outer tube sleeve 3 at the outer end of each outer small mixing tube 33 and the outer tube wall of the inner tube assembly 2 constitutes a large annular mixing tube 35.
  • the outer peripheral small mixing tubes 33 which are uniformly distributed in a ring shape, are straight to the large annular mixing tube 35, see Fig. 3.
  • the top wall of the large annular mixing tube 35 is a tapered toroidal surface which is inclined toward the center, and the outer ends of the respective outer small mixing tubes 33 are provided on the surface of the tapered ring.
  • the six outer peripheral nozzles 4, the outer peripheral mixing chamber 5, the secondary fluid inlet, the six outer small mixing tubes 33 and the large annular mixing tube 35 coaxially disposed around the central ejector constitute the multi-tube multiple ejector of the present invention
  • the inner tube ring sleeve 3 reduces the diameter of the tube section to form the total mixing chamber 36, and the tube extending from the lower part of the outer tube ring sleeve 3 constitutes the total mixed output tube; the contraction cone outlet of the peripheral wall of the total mixing chamber 36 smoothly straightens through the straight tube section of the same diameter
  • the tube section of the total mixing tube 37 that passes through the gradually expanding diameter is a diffuser tube 38, and the total mixing tube and the diffusing tube constitute the total mixed output tube.
  • the outlet of the rear portion of the center tube of the inner tube assembly 2 is contracted inwardly to form a main nozzle 26 (conical neck vent).
  • the main nozzle 26 extends into the total mixing chamber 36 with its spout exiting and centering the converging tapered outlet of the total mixing chamber 36 and its through-connected total mixing output tube.
  • Main nozzle 26 The large annular mixing tube 35 outlet, the total mixing chamber 36 and the total mixing outlet tube form the total ejector 100c of the multi-tube multiple ejector of the present invention.
  • the central ejector 100b is coaxially disposed within the composite annular ejector, the two sharing a primary fluid inlet tube 11 at the front end of the multi-tube multiple ejector axis, the total ejector 100c being disposed in the composite ring ejector 100a and
  • the central ejector 100b is rearward and is integrally butt-connected concentrically with the latter two; the composite annular ejector 100a of the preceding stage, the central ejector 100b of the preceding stage, and the total ejector 100c of the subsequent stage are composed Invented a multi-tube multiple ejector.
  • the nozzle distance of the main nozzle 26 from the contraction tapered outlet of the total mixing chamber 36 and the flare of each outer peripheral nozzle 4 and the corresponding outer small mixing tube 33 can be synchronously adjusted.
  • a plurality of oblique slits 27 may be provided in the end wall of the main nozzle 26. This has the advantage of causing the central ejector's outlet flow to produce a small portion of the radial or tangential split, which can be fully blended with the mixed flow of the composite annular ejector output around the main nozzle 26, thereby reducing the total Mix the length of the output tube.
  • the main nozzle 26 can also be a straight round port.
  • the peripheral nozzle 4 may also be a straight circular orifice nozzle or a porous nozzle that converges toward the conical inlet 32 of the outer peripheral small mixing tube 33, or a spray nozzle.
  • the spray nozzle is used when the primary fluid is a liquid ejector gas secondary fluid, and the atomization jet can increase the primary fluid's ability to entrain and entrain the secondary fluid, that is, increase the efficiency of the multi-tube multiple ejector.
  • the number of the peripheral nozzles 4 may be increased or decreased according to specific needs, but the number of the peripheral small mixing tubes 33 must coincide with the number of the peripheral nozzles 4, and the axis of each of the peripheral nozzles 4 must coincide with the axis of the corresponding peripheral small mixing tube 33. .
  • the primary fluid enters the tube 11 through the primary fluid and enters the central ejector 100b and the composite annular ejector 100a.
  • a part of the main fluid is injected through the peripheral nozzles 4 of the composite annular ejector 100a into the secondary fluid entering the peripheral mixing chamber 5 from the periphery of the outer peripheral mixing chamber 5, and enters each of the outer small mixing tubes 33 to be mixed and merged through the large annular mixing tube 35.
  • a primary mixed flow secondary fluid is output to the total mixing chamber 36 of the total ejector 100c; another portion of the primary fluid is directed through the central nozzle 15 of the central ejector 100b from the peripheral wall of the annular distribution sleeve 12
  • the secondary fluid entering the central mixing chamber is injected toward the central mixing tube 24, and a primary mixed primary fluid is ejected from the main ejector main nozzle 26 disposed at the end of the central mixing tube 24, and the primary mixed flow is discharged from the primary nozzle 26.
  • the body is ignited in the total mixing chamber 36 of the total ejector to inject the primary mixed flow secondary fluid outputted from the surrounding large annular mixing tube 35, and enters the total mixed output tube of the total ejector to perform secondary mixing and boosting output to complete the high voltage.
  • the main fluid pump draws a mixed flow of the secondary fluid.
  • a high-pressure main fluid is also input from the front end portion, a low-pressure or non-pressure secondary fluid input from the lateral position is injected, and a mixed flow is output from the tail portion, and its structure is as shown in FIG.
  • the composite annular ejector 100a of the front stage, the central ejector 100b, and the total ejector 100c of the subsequent stage; the main components are the three main components of the main fluid assembly 10, the inner tube assembly 20 and the outer tube collar 30.
  • the top (front end) of the main fluid assembly 10 is provided with a main fluid inlet pipe 110 at the center, and an annular flow distribution sleeve 120 having an enlarged diameter at the lower portion thereof; and an enlarged diameter chamber 1110 is provided at the lower end of the main fluid inlet pipe 110.
  • the peripheral wall of the annular distribution sleeve 120 is provided with a plurality of lateral fluid holes 130 (perpendicular to the circumferential wall of the annular distribution sleeve 120) and a plurality of primary fluid holes 140 (parallel to the circumferential wall of the annular distribution sleeve 120), the primary fluid orifices 130. Intersecting from the main fluid hole 140.
  • the center of the inner cavity 160 of the annular distribution sleeve 120 is provided with a central nozzle 150. The outer circumference of the central nozzle 150 divides the inner cavity 160 of the annular distribution sleeve 120 into a ring groove shape.
  • the inner tube assembly 20 is fixed to the rear end portion of the annular distribution sleeve 120, and the flared outer casing 2110 of the upper end (front end) annular transverse wall 210 of the inner tube assembly 20 is sealed and fixed to the outer periphery of the lower portion of the annular distribution sleeve 120 of the main fluid assembly 10.
  • the front end (upper end) of the inner tube assembly 20 is centrally provided with a recess 220 for abutting the inner cavity 160 of the annular distribution sleeve 120 of the main fluid assembly 10, and a central portion of the bottom portion of the recess 220 is provided with a tapered reduced diameter inlet 230;
  • the radial inlet 230 and the inner chamber 160 of the annular distribution sleeve 120 on the primary fluid assembly 10 form a central mixing chamber.
  • Each secondary fluid orifice 130 passes through the peripheral wall of the annular distribution sleeve 120 into the central mixing chamber.
  • the central nozzle 150 on the main fluid assembly 10 is directed through the main fluid inlet tube 110, and the outlet nozzle of the central nozzle 150 extends through the recess 220 of the inner tube assembly 20 into the reduced diameter inlet 230.
  • the inner portion of the straight tube type central tube in which the end of the reduced diameter inlet 230 of the inner tube assembly 20 is smoothly connected is the central mixing tube 240.
  • the central nozzle 150, the respective secondary fluid holes 130, the central mixing chamber and the central mixing tube 240 thus arranged constitute the multi-tube multiple reference of the present invention
  • Each of the primary fluid orifices 140 on the primary fluid assembly 10 extends obliquely upwardly through the primary fluid inlet conduit 110 through the expanded diameter section 1110 of the lower end of the primary fluid inlet conduit 110.
  • a rear end of the annular distribution sleeve 120 has a main fluid annular groove 190 corresponding to each of the main fluid holes 140.
  • the lower convex outer ring of the annular transverse wall 210 of the inner tube assembly 20 corresponds to the main fluid annular groove 190 and is evenly distributed with a plurality of inwardly inclined outer peripheral nozzles 280.
  • the primary fluid annular groove 190 communicates with the primary fluid inlet pipe 110 via respective primary fluid orifices 140 in the annular distribution sleeve 120, and the primary fluid annular groove 190 communicates downwardly with the inlet of each peripheral nozzle 280.
  • the inner tube assembly 20 is provided with an external thread 250 at the center to the bottom of the center tube to be screwed with the screw hole at the center of the outer tube collar 30.
  • the top reaming cavity port 3110 of the outer tube collar 30 is sleeved with the flared outer sleeve 2110 of the upper end of the annular transverse wall 210 of the inner tube assembly 20, and the front end portion 310 of the outer tube collar 30 is uniformly distributed with six inwardly inclined inlet ends.
  • the outer peripheral small mixing tube 330 of the flared cone inlet 320 The annular space between the front end portion 310 of the outer tube collar 30 and the rear end surface of the annular transverse wall 210 of the inner tube assembly 20 constitutes the outer peripheral mixing chamber 50.
  • a plurality of through holes 270 are evenly distributed in the annular lateral wall 210 on the inner side of the outer end of each outer peripheral nozzle 280 to communicate the central mixing chamber with the inner ring side of the outer peripheral mixing chamber 50.
  • the outer sleeve (front end) of the annular transverse wall 210 of the flared outer casing 2110 and the outer tube collar 30 front port (upper port) are provided with a connecting sleeve 3110 which surrounds the outer peripheral mixing chamber 50 to form a closed loop-shaped cavity.
  • a plurality of secondary fluid inlets 390 are provided in the side wall of the connecting sleeve 3110. Each secondary fluid inlet 390 opens into the peripheral mixing chamber 50 from a side position.
  • the outer end of each outer peripheral nozzle 280 on the top ring wall of the peripheral mixing chamber 50 is respectively centered with a flared cone inlet 320 at the end of a corresponding outer small mixing tube 330 and a nozzle distance is left.
  • Each peripheral nozzle 280 is coaxial with a corresponding peripheral small mixing tube 330 that is oblique or intersecting in the same direction as the axis of the multi-tube multiple ejector of the present invention.
  • the annular space between the inner wall of the rear end of the outer peripheral small mixing tube 330 and the outer wall of the central tube of the inner tube assembly 20 at the rear end of the outer tube collar 30 constitutes a large annular mixing tube 350.
  • the outer peripheral small mixing tubes 330 which are uniformly distributed in a ring shape, are all straight through the large annular mixing tube 350.
  • the top wall of the large annular mixing tube 350 is an inclined torus such that the outlet ends of the respective outer small mixing tubes 330 are obliquely shaped outlets, and each of the obliquely shaped outlets faces the outlet of the large annular mixing tube 350 and the multi-tube of the present invention.
  • the axis of the compound ejector Referring to Figure 4.1, a conical groove 340 is formed in the inlet top ring wall of the large annular mixing tube 350 to form a large annular groove 340 which passes through the center of the outer circular hole of each small mixing tube 330. And with it.
  • the composite annular ejector is coaxially disposed about the central ejector 100b, which together form a pre-stage ejector mixer of the multi-tube multiple ejector of the present invention.
  • the front end portion 310 of the outer tube collar 30 is provided with a threaded extension tube 30 at the rear end, and the tube 30 is elongated, and the inside of the front end is a reduced diameter tube section 310.
  • the inner tube of the outer tube annular sleeve 30, the reduced diameter tube portion 310, the inner chamber constitutes the total mixing chamber 360, the elongated tube 30 of the outer tube ring sleeve 30, and the lower portion of the tube extending stepwise to form a total mixed output tube;
  • the output tube is formed by a converging conical outlet of the peripheral wall of the total mixing chamber 360, which smoothly passes through the total mixing tube 370 of the same diameter, and a total mixing tube 370 which extends straight through the diverging tube 380.
  • the main nozzle 260 (straight circular spout) is formed by the outlet of the rear portion of the central tube of the inner tube assembly 20, the main nozzle 260 extends into the total mixing chamber 360, the spout thereof exits and the converging tapered outlet of the center mixing chamber 360 and its The total mixed output tube for the straight-through connection.
  • the main nozzle 260, the large annular mixing tube 350 outlet, the total mixing chamber 360 and the total mixed output tube thus arranged coaxially constitute the post-stage total ejector 100c of the multi-tube double ejector of the present invention.
  • the central ejector 100b is coaxially disposed within the composite annular ejector 100a, which shares a primary fluid inlet tube 110 at the forward end of the multi-tube multiple ejector axis, the total ejector 100c being disposed in the composite ring ejector 100a and
  • the central ejector 100b is rearward and is integrally butt-connected concentrically with the latter two; the composite annular ejector 100a of the preceding stage, the central ejector 100b of the preceding stage, and the total ejector 100c of the subsequent stage are composed Invented a multi-tube multiple ejector.
  • the main nozzle 260 can also be a tapered bore or a uniform through slot on the orifice wall of the tapered orifice.
  • the peripheral nozzle 280 may be provided with a straight round hole nozzle or a tapered hole injection hole, or a multi-hole nozzle which is directed to the flared tapered inlet 320 of the outer small mixing tube 330, or a spray nozzle.
  • the number of peripheral nozzles 280 may be increased or decreased according to specific needs, but the number of peripheral small mixing tubes 330 must coincide with the number of peripheral nozzles 280, and the axis of each peripheral nozzle 280 must coincide with the axis of the corresponding peripheral small mixing tube 330. .
  • the primary fluid enters the central ejector 100b and the composite annular ejector from the primary fluid inlet tube 110. 100a.
  • a portion of the primary fluid is directed through each of the peripheral nozzles 280 of the composite annular ejector 100a from the respective secondary fluid inlets 390 of the outer casing collar 30 connecting sleeve 3110 sidewalls and from the central mixing chamber through the annular transverse wall 210 of the inner tubular assembly 20
  • the through holes 270 enter the secondary fluid of the peripheral mixing chamber 50, enter the outer peripheral small mixing tubes 330 for mixing, and output the primary mixed flow secondary fluid through the large annular mixing tube 350 to the total mixing chamber 360 of the total ejector 100c;
  • the body is injected through the central nozzle 150 of the central ejector 100b into the secondary mixing chamber 240 from the peripheral wall entering the central mixing chamber from the peripheral wall of the annular distribution sleeve 120, and is sprayed from the main nozzle 260 of the total ejector provided at the outlet of
  • the primary mixed flow main fluid is ejected, and the main nozzle 260 ejects the primary mixed flow main fluid to illuminate the primary mixed flow secondary fluid outputted by the surrounding large annular mixing pipe 350 in the total mixing chamber 360 of the total ejector, and enters the total introduction together.
  • the total mixed output tube of the emitter 100c is subjected to secondary mixing and boosting output, and the mixed flow of the high pressure main fluid pump is performed.
  • this embodiment will become a high pressure primary fluid input from the front end portion, and two of the input from the lateral position are injected. A low pressure or no pressure secondary fluid that outputs a mixed stream from the tail.
  • a high-pressure main fluid is input from the front end portion, a low-pressure or non-pressure secondary fluid input from the lateral position is injected, and a mixed flow is output from the tail portion, and its structure is as shown in FIG.
  • the top (front end) of the main fluid assembly 100 is provided with a main fluid inlet pipe 1100 at the center and a flange at the lower end thereof; the flange is sealingly abutted with the outer casing flange 21100 of the upper annular distribution sleeve 2100 of the inner tube assembly 200, and the middle is sealed.
  • the central nozzle assembly 1500 has an upper and lower double disc structure with an annular groove 15200 in the middle.
  • the upper disc having a plurality of longitudinal flow holes 15100 is disposed in the main fluid inlet tube 1100, and the lower disc is conically inserted.
  • the top circular opening of the inner cavity 21600 of the annular distribution sleeve 2100 is sealed; and the small oblique injection hole 15300 capable of collecting the jet is formed on the lower disk cone to form a porous central nozzle.
  • the circumferential wall of the annular distribution sleeve 2100 is provided with six lateral secondary fluid holes 21300 and six vertical primary fluid holes 21400.
  • the secondary fluid holes 21300 are vertically separated from the primary fluid holes 21400 and are isolated from each other.
  • Each secondary fluid aperture 21300 extends through the peripheral wall of the annular distribution sleeve 2100 into its circular lumen 21600.
  • the circular lumen 21600 and its tapered reduced diameter 2300 form a central mixing chamber that is facing and convexly centered.
  • a nozzle distance is left in the inlet taper hole 2300 of the chamber, and the taper hole smoothly passes through the central tube 2400 extending downward from the inner tube assembly 200 to form a central mixing tube;
  • the central mixing tube is formed by the central tube 2400 upper tapered reducing chamber 2300,
  • the inlet pipe 2401 of the small diameter section and the third pipe of the central expansion pipe 2402 of the lower diameter gradually expand.
  • the central nozzle, the central mixing chamber having the secondary fluid holes 21300 on the surrounding walls, and the central mixing tube axially communicating with the mixing chamber together form the central ejector 100b of the front of the multi-tube multiple ejector of the present invention.
  • the main fluid inlet pipe 1100 passes through the diversion hole 15100 of the central nozzle assembly and the lateral ring groove 15200, and passes through the expansion chamber 11100 and then opens into the six vertical main fluid holes 21400 on the peripheral wall of the upper annular distribution sleeve 2100 of the inner tube assembly 200 to form a periphery.
  • the nozzles are directed toward six vertical outer peripheral small mixing tubes 3300 uniformly disposed on the peripheral wall of the front end portion 3100 of the outer tube collar 300.
  • Each of the peripheral nozzle outlets is respectively centered with a flared cone inlet 3200 corresponding to the entrance of the outer peripheral small mixing tube 3300 and has a nozzle distance, and each of the peripheral nozzles is coaxial with the corresponding outer small mixing tube 3300, and the axis is
  • the multi-tube double ejector of the present invention has parallel axes.
  • the outer peripheral nozzle may be a straight circular nozzle or a tapered nozzle, or a porous nozzle that is directed to the outer small mixing tube 3300 conical inlet 3200, or a spray nozzle.
  • the side of the front expansion sleeve 31100 of the outer tube collar assembly 300 is provided with a secondary fluid inlet tube 31200; the end opening of the expansion sleeve 31100 is sealingly connected with the top outer circumference of the annular distribution sleeve 2100 of the inner tube assembly 200; The space between the inner bore of the expanded diameter sleeve 31100 and the upper outer surface of the annular distribution sleeve 2100 of the inner tube assembly 200 constitutes the outer peripheral mixing chamber 500.
  • the peripheral nozzles are located on the top ring wall of the outer circumference mixing chamber 500, the secondary fluid inlet tubes 3200 are passed into the outer peripheral nozzles of the outer circumference mixing chamber, and the outer peripheral small mixing tubes 3300 conical inlets 3200 are also located at the outer circumference.
  • the mixing chamber, and the inlets of the respective secondary fluid orifices 21300 on the annular distribution sleeve 2100 are also located within the peripheral mixing chamber 500, which causes the central mixing chamber to communicate with the peripheral mixing chamber 500 via the respective secondary fluid orifices 21300.
  • a connecting thread 2500 is disposed between the outer wall of the central tube 2400 of the inner tube assembly 200 and the central hole of the outer tube collar 300.
  • the outer tube collar 300 is rotated by an integral multiple of 1/6 inch to fix the position of each other. It is not necessary for the peripheral nozzles 280 and the corresponding outer small mixing tubes 330 to be respectively centered, and the nozzle distances of the flared tapered inlets 320 of the respective outer peripheral nozzles 280 and the corresponding outer small mixing tubes 330 and the main nozzles 260 may be synchronously adjusted.
  • the main nozzle distance of the converging tapered outlet of the mixing chamber 360 while changing the volume of the total mixing chamber 360.
  • annular space between the outer wall of the outer tube collar 300 axially beyond the outer wall of the outer small mixing tube 3300 and the outer wall of the central tube 2400 constitutes a short large annular mixing tube 3500, and the large annular mixing tube surrounds the main nozzle 2600.
  • the annular outlet opens smoothly into the total mixing chamber 3600.
  • the outlets of each of the outer small mixing tubes 3300 are on the annular top surface of the large annular mixing tube, and their outlets are specifically in the following forms which increase the efficiency of the jet mixing flow:
  • the top wall of the large annular mixing tube 3500 is an annular surface 33100 which is slightly inclined toward the center, and the outer circumference of the small mixing tube 3300 which is uniformly distributed in a ring shape is straight and intersects with the top wall of the large annular mixing tube 3500 toward the center.
  • the inner inclined toroidal surface 33100 is as shown.
  • the same direction inclined semicircular chamfer flare is shown in Figure 5.1 and 5.2.
  • the semi-circular flares 3302 of the same direction inclined chamfering are provided on the same side of the outer peripheral small mixing tube 3300 or on the same side of the semi-aperture outlet 3301, and the direction of each semicircular flare and the top ring of the large annular mixing tube Face 33100
  • the center loop line is generally uniform or tangent, and the inclined semi-circular chamfer flare on the outlet port of the small mixing tube can be uniaxially milled from the side of the small mixing tube hole with a sharp inclined angle by a milling cutter not larger than the diameter of the small mixing tube.
  • a swirling flow is generated, which enhances the circumferential friction and mixing of the mixed flow with the main nozzle.
  • the circular small mixing tube outlet on the annular top surface of the large annular mixing tube can also be used as the inclined flat opening as shown in Figures 5.3 and 5.4, (it is slightly larger than the small mixing tube)
  • the end mill of the aperture is formed by d, the inclined milling plane of the mixing tube orifice), that is, all or half of the semi-finished end orifices of the circular small mixing tube are set to be obliquely inclined, which can be obliquely sprayed.
  • the north side is generally tangential to the tangential direction of the annular centerline of the large annular mixing tube, even if the oblique jets of the circular small mixing tube orifices merge into the rotation in the large annular mixing tube.
  • the benefits are similar to the semi-circular expansion of the circular small mixing tube with a slanted chamfer.
  • a swirling flow is generated, which enhances the circumferential friction and mixing of the mixed flow with the main nozzle.
  • the outer peripheral small mixing tube 3300 of the plurality of shape outlets and the six outer peripheral nozzles coaxially disposed around the central ejector are disposed in the outer peripheral mixing chamber 500 having a secondary fluid inlet tube 31200, and the six outer circumferences are small.
  • the mixing tube 3300 communicates with a large annular mixing tube 3500 to form a composite annular ejector 100a of the multi-tube multiple ejector front stage of the present invention.
  • the lower end of the outer tube sleeve 300 is flanged with a flange 33200 and a lengthened tube 300, and the tube 300 is extended, and the front end is a reduced diameter tube section.
  • the lengthened tube 300, the inner cavity of the funnel-shaped reduced diameter pipe section constitutes the total mixing chamber 3600; the elongated pipe 300, the straight-shaped pipe 3700 of the funnel-shaped reduced diameter pipe smoothly connected, or the straight pipe outlet and the straight-through expansion pipe 3800 Both of them can form a total mixed output tube;
  • the outlet port of the central tube 2400 of the inner tube assembly 200 forms a main nozzle 2600, and the orifice wall of the main nozzle 2600 is uniformly distributed with an oblique groove 2601 or a radial groove (the main nozzle is also But straight round spout or other forms of low resistance spout).
  • the main nozzle 2600 extends into the total mixing chamber 3600 with its spout exiting and centering the converging tapered outlet of the total mixing chamber 3600 and its through-connected total mixing output tube.
  • the main ejector 2600 which is coaxially disposed, the large annular mixing tube 3500 outlet around the circumference, the total mixing chamber 3600, and the total mixed output tube constitute the total ejector 100c of the multi-tube multiplexer of the present invention.
  • a main nozzle having a uniformly distributed oblique groove 2601 may be provided on the wall of the orifice, and the oblique direction on the wall of the main nozzle opening may be provided.
  • the swirling direction of the outlet groove and the outer peripheral small mixing tube outlet are opposite to each other, so that the inner nozzle 100c main nozzle and the composite annular ejector 100a large annular mixing tube output inner and outer mixed flow into the total mixing chamber can be reversed strongly Friction and mixing, the pre-structure of the composite annular ejector 100a can partially replace the subsequent total ejector 100c function to greatly shorten the total mixing output tube.
  • the central ejector 100b of the present example is coaxially disposed within the composite annular ejector 100a, which shares a primary fluid inlet tube 1100 at the front end of the multi-tube multiple ejector axis, and the total ejector 100c is disposed at the composite ring ejector
  • the axis of the device 100a and the central ejector 100b are rearward and are integrally connected to each other concentrically;
  • the composite annular ejector 100a of the preceding stage, the central ejector 100b of the preceding stage, and the total ejector of the subsequent stage constitute the multi-tube multiple ejector of the present invention.
  • a portion of the primary fluid is injected through the peripheral nozzle of the composite annular ejector into the secondary fluid of the peripheral mixing chamber 500, collectively entering each of the outer small mixing tubes 3300 for mixing and passing through the large annular mixing tube 3500 to the total ejector
  • the mixing chamber 3600 outputs a primary mixed flow secondary fluid; the other portion of the primary fluid is directed through the central nozzle of the central ejector from the peripheral mixing chamber 500 through the secondary fluid passage of the peripheral wall of the annular distribution sleeve 1200 into the secondary mixing chamber to the central mixing tube 2400 is sprayed, and a primary mixed flow main fluid is sprayed from the main ejector main nozzle 2600 provided at the outlet of the central mixing tube, and the main nozzle 2600 ejects the primary mixed flow main fluid in the total mixing chamber 3600 of the total ejector
  • the first mixed flow secondary fluid outputted from the large annular mixing pipe 3500 is injected into the total mixed output pipe of the total ejector to be the secondary equal

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Abstract

一种多管复式引射器，包括前级的复合环形引射器、中央引射器和后级的总引射器；中央引射器同轴设置在复合环形引射器内，两者的入端共用主流体进管，总引射器设置在复合环形引射器和中央引射器的后方，且与两者同心串联。该多管复式引射器引射效率高、引射流量大。

Description

多管复式引射器
【技术领域】
本发明涉及混流喷射装置， 具体地说是一种用于混合流体喷射的多管复式 引射器。
【背景技术】
引射器是用较高压主流体引射低压（或无压）次流体， 完成主流体抽吸次 流体进行混流喷射或输送的装置。 由于引射器无运动零件， 使用可靠， 广泛用 于多种领域的流体设备上。
現有典型引射器由主流体进口管、 喷嘴、 次流体进口、 混合室、 喉管或混 合扩压管组成。通入混合室的次流体被主流体喷嘴的射流抽吸入混合管， 主次流 体经混合均压从混合扩压管中输出。 这种引射器一般设中央喷嘴， 和单个细长 的混合扩压圓管 。
单管引射器的优点是结构筒单、 工作稳定可靠， 但存在如下缺陷： 现有的引射器主要靠射流在混合管长行程中的紊动扩散作用， 使主流体与 次流体互相掺混的,射流的紊动扩散需要有一个在混合管中产生发展和加强的过 程， 因而引射器都必需要有细长的混合管 （或混合扩压管）， 而且大流量引射器 需要大口径混合管， 口径越大就越需要大大增加混合管的长度，从而造成较大规 格引射器轴向尺寸和重量过大的缺点。 这对需要小体积和轻负载的许多场合来 说， 其安裝使用十分不利。
专利号为 ZL200920106414.7 的固定式多喷嘴射流泵专利， 公开了一种环 形多管并联引射器，它是在外环形套管內设置一圏小短管射流器， 每个小射地面 流器都由一个喷嘴、一个喉管 (混合管)组成一个单管引射器,它们的出口都通入一 个中间总管进行汇流输出； 它装在井下， 使用高能动力液引射低压地层液， 混 流举升到达到採油目的。 该装置实际是一个由一圏小射流器向中间总管输出的 并联引射泵。 该多管并联引射泵， 它们并未改变一个引射器使用一支单圓混合 管的主体结构。 虽然採用了多个小引射器并联成大引射泵， 但它仅只是个多管 并联泵并未增加新的引射参混功能,而且其结构持殊仅适于地下採油， 它无法满 足一些场合对体积小、 重量轻的高效大流量引射器的要求。
【发明内容】
本发明的目的是克服现有引射器结构单轴向尺寸太长且引射效率较低的不 足,提供一种轴向尺寸紧凑、 抽射率高， 大流量时性能好、 主次流参混均勾的多 管复式引射器。
本发明的技术方案是： 多管复式引射器包括前级的复合环形引射器、 中央 引射器和后级的总引射器； 中央引射器同轴地设置在复合环形引射器内， 两者的 入端共用主流体进管； 总引射器设置在复合环引射器和中央引射器后方,且与后 两者同心串连整体对接；
该中央引射器有中央喷嘴、 中央混合室和中央混合管； 中央喷嘴位于中央 混合室顶部中心， 其入端直通主流体进管，出端喷口正对中央混合室的锥形出口 并保有喷嘴距， 中央混合室的锥形出口平滑直通的中央混合管； 中央混合室的 侧壁四周设次流体进口；
该复合环形引射器有多个呈环形均布的外周喷嘴及同等数目的外周小混合 管、 一个外周混合室和一个大环形混合管； 各个外周喷嘴入端连通主流体进管 而出端伸入外周混合室中； 外周混合室的侧位设次流体入口； 各个外周小混合 管的入端均位于外周混合室内而出端均直通大环形混合管； 每一个外周喷嘴与 对应外周小混合管入端对中且留有喷嘴距；
该总引射器有主喷嘴、 总混合室和总混合输出管； 主喷嘴位于复合环形引 射器的中央， 主喷嘴前端接中央混合管的出端， 主喷嘴后端伸入总混合室中央； 主喷嘴与总混合室的收缩锥形出口对中且保有喷嘴距； 总混合室的入端连接复 合环形引射器的大环形混合管的输出口， 总混合室出端连通总混合输出管。
工作时， 一部分主流体通过复合环形引射器的外周喷嘴引射进入复合环形 引射器外周混合室的次流体、 共同进入复合环形引射器的各外周小混合管进行 混合並经复合环形引射器的大环形混合管向总引射器的总混合室输出一级混流 次流体； 另一部分主流体通过中央引射器的中央喷嘴引射进入中央引射器的中 央混合室的次流体向中央引射器的中央混合管喷射， 並从设在中央混合管出口 的总引射器主喷嘴喷出一级混流主流体， 该主喷嘴喷出一级混流主流体在总引 射器的总混合室内引射周围大环形混合管输出的一级混流次流体， 共同进入总 引射器的总混合输出管做二次混合和升压输出， 完成高压主流体泵抽低压次流 体的混流输送。
本发明多管复式引射器中的前级复合环形引射器是多个复合引射器具有同 一个大环形混合管输出口的並联复合引射器， 即每个复合引射器都由一个外周 喷嘴、 一个外周小混合管串连一段大环形混合管形成。 在每个单体小直径外周 小混合管中主流体容易仅靠湍流黏滞力即能较好牵引泵抽次流体， 因而此时引 射比较高， 而採用多个外周小混合管並联又可以增加引射器总流量， 但单体小 直径外周小混合管中的混合传质性能差， 需要^艮长的混合管才能在行进中充分 混匀。 为克服此缺点，本发明採用多个外周小混合管並使其出端都通入並经过一 个大环形混合管进行输出的单体並、 串联复合结构。 复合环形引射器採用多个 短的外周小混合管出端都通入一个大环形混合管进行输出， 能充分发挥每个单 体外周小混合管中主流体对次流体的附壁泵抽牵引混合作用， 又由于各个外周 小混合管输出的混合流进入大环形混合管时瞬间体积膨大、 密变小， 造成大环 形混合管出口前后动压增大， 因此可有效防止由后端压力升高引起的引射器倒 流。 复合环形引射器採用多个短的外周小混合管出端都通入一个大环形混合管 进行输出， 当外周小混合管出端喷流进入大环形混合管时会产生由密度和压差 造成的横向迁移混和， 使大环形混合管向总引射器的主喷嘴四周的输出喷流趋 于均匀，由此增加其与总引射器主喷嘴的主流体射流的接触面积， 这能加强总引 射器中主、 次流的传热传质和参混效率。
当外周小混合管出端喷流进入大环形混合管时， 产生由压差密度不平衡而 引起大环形混合管中流体横向迁移混和， 这能加速环形空间内和前级复合环形 引射器中的主、次流体传热传质的参混效率， 尤其有利于防止前级复环形引射器 的失效倒流。 因而本发明的前级复合环形引射器输出的一级混流比一般单圓管 引射器具有更高抽吸率和更短的混合管长度和更大的工作流量和更宽的工作适 应范国。 所以前级复合环形引射器具有： 单个外周小混合管的圓活塞抽吸作用 力强， 多个外周小混合管並联能增加对次流体的总参混量， 因而前级复合环形 引射器具有总抽吸作用力强、 次流体总参混量较多和抗倒流能力強三重优点。
本发明多管复式引射器中的后级总引射器， 用总混合室中的主喷嘴把中央 引射器的输出混流引射前级复合环形引射器大环形混合管输出的混流,它们共同 进入并在总混合输出管中再次加压混流输出， 由于大环形混合管输出的混流在 轴向上有较大动量， 它与中央引射器的输出混流两者的混合自然增强了总引射 器参混效率， 因而总引射器的混合效率高， 从而可缩短总混合管长度， 使整体 结构更加紧凑， 所以大流量时性能好、 可缩小整体的体积并降低整体的重量。
在具体的实施结构中： 所述的中央引射器设在主流体组件和内管组件上； 主流体组件顶部中央向上设所述的主流体进管、向下设所述的中央喷嘴， 主流体 组件下部设环形配流套； 环形配流套的內腔与内管组件上端的锥形缩径进口对 接为所述中央引射器的中央混合室； 环形配流套周壁上设有多个横竖交叉隔离 的次流体孔和主流体孔； 各个主流体孔上通所述的主流体进管、 下接所述的外 周喷嘴； 各个次流体孔从四周通入所述的中央混合室； 所述的中央喷嘴出端喷 口朝向内管组件的锥形缩径进口； 内管组件的锥形缩径进口的出端平滑连接的 中心管为所述中央混合管；
所述的复合环形引射器设置在外管环套和内管组件上； 多个所述的外周喷 嘴均布在内管组件前端四周， 多个所述外周小混合管均布在外管环套上并与上 述的外周喷嘴——对应； 所述的外周混合室设在内管组件前端环形横壁与外管 环套前端之间， 所述的大环形混合管由夹在各外周小混合管出端的中心管外壁 和外管环套内壁之间的圓环空间构成； 所述的总引射器设在外管环套后部和内管组件的中心管后部； 所述的主喷 嘴由内管组件的中心管后部的出口形成； 所述的总混合室和所述的总混合输出 管由该外管环套后部呈阶梯状延伸出的管道构成， 该管道前部的收缩锥内腔构 成所述的总混合室， 该管道中该收缩锥出口平滑直通同径的直圓管段为总混合 管， 该直圓管段可直接输出或者再直通渐扩径的扩压管段，单总混合管或总混合 管与扩压管共同构成所述的总混合输出。
大环形混合管的结构形式之一是： 所述的大环形混合管的顶壁为向中心倾 斜的锥环面， 所述的各个外周小混合管的出端均设在该锥环面上。 各个外周小 混合管的出端均设在该锥环面上形成斜截面形出口， 可使各个外周小混合管的 混合输出流向斜截面出口方向转向， 造成各个外周小混合管的出流从四周都朝 向主喷嘴的喷流聚集， 增强主流体对各个外周小混合管输出混流次流体的碰撞、 剪切参混和卷吸的能力， 因而可以提高多管复式引射器引射效率。
大环形混合管的结构形式之二是： 所述大环形混合管包括设在大环形混合 管顶环面上的一圏扁槽或楔形槽构成的环形槽， 该环形槽经过各外周小混合管 的出端中心并与之相贯。 这里， 大环形混合管是常规的 "大环形混合管"与 "环 形槽" 的组合，也就是设有环形槽的大环形混合管,它兼具 "大环形混合管" 和环 形槽两者的优点， 环形槽使各个外周小混合管的出口喷流在离开各个外周小混 合管的出端之前提前互通，先做横向迁移和初步均化分布， 并整个充满无小混合 管出端的环形槽盲孔区 ， 在进入 "大环形混合管" 后各个外周小混合管的出口 喷流进行进一步均匀化混合， 这更有利于增加其与总引射器主喷嘴的主流体射 流的接触面积， 能加强总引射器中主、 次流体的传热传质和参混效率。 当所述 大环形混合管极短， 环形槽较大较深时， 所述环形槽即可替代大环形混合管功 h
匕。
大环形混合管的结构形式之三是： 所述大环形混合管较短， 外周小混合管 的全部或互相间隔的半敉出端孔口同侧上都设有能喷出旋流的同向倾斜倒角形 的半圓扩口， 各半圓扩口的长轴中心线与大环形混合管顶壁环面中心线大体相 切或一致。 外周小混合管出端孔口同侧上的同向倾斜倒角形的半圓扩口可造成 出口喷流旋转或使其出口旋流与不带倾斜倒角形的出口直喷流互相碰撞、 磨擦。 这不旦使外周小混合管的出口喷流加强均勾化混合， 这也有利于总混合室内从 中央引射器之中央混合管的主喷口喷出的混流对环形引射器之大环形混合管输 出的旋流混流加强磨擦和参混， 加强总引射器引射器主喷嘴输出的主流体混流 对环形引射器输出之次流体混流的传热传质能力和引射参混效率。
当所述大环形混合管较短时圓形小混合管出口也可採用斜平口， 即所述圓 形 J、混合管的全部或互相间隔的半敉出端孔口设成能产生斜喷的斜平口， 各斜 平口朝方都与大环形混合管环形中心线的切向大体一致。 其好处与上述圓形小 混合管带倾斜倒角形的半圓扩类似。
在优选的实施结构中： 所述环形配流套外围和外管环套上端口间设连接套, 该连接套包围所述的外周混合室形成密闭环形腔， 该密闭环形腔侧壁设次流体 入口管。 这种带连接套的结构能方便的从侧位输入一种或两种低压或无压次流 体,适于本发明多管复式引射器的大多数用途。
进而： 所述的各个外周喷嘴出口内侧的内管组件上均布多个通孔， 这些通 孔使中央混合室与外周混合室内环侧连通。 这种利用多个通孔将中央混合室和 外周混合室做内环连通的结构与连接套配合， 使各个外周喷嘴输出主流体的同 时在内侧对从中央混合室进入外周混合室的次流体进行裹卷、 在外侧对连接套 侧壁次流体入口进入外周混合室的次流体进口输入的次流体进行裹卷， 可提高 复合环形引射器各个外周小混合管的掺混效率。
在优选的实施结构中： 所述每个外周喷嘴及对应的外周小混合管的轴线与 多管复式引射器的中轴线平行； 所述内管组件中央的中央混合管与所述外管环 套中心孔以螺纹连接。 转动连接螺纹 1/N圏的整数倍， N为外周小混合管个数， 并使外各外周喷嘴与对应的外周小混合管入口仍保持对中， 再使中央混合管与 外管环套互相固定， 则可同步调节总引射器主喷嘴离总混合室的收缩锥形出口 的喷嘴距， 和复合环形引射器外周喷嘴与对应的外周小混合管的扩口锥形入口 的喷嘴距。 改变上述喷嘴距， 可在一定程度上改变引射器主、 次流体的参混比 和输出压， 以便寻求和确定最合适工况要求的多管复式引射器结构参数并以此 为据设计不再可调的固定结构； 或用來调节适应工况变化的性能参数， 从而获 得最佳的工况 /性能参数。
在优选的实施结构中： 所述的每个外周喷嘴同轴对应的外周小混合管呈锥 环状均布在外管环套上； 所述各外周小混合管中心线与复合串级射流泵的中轴 线同向相斜或相交； 所述外管环套中心孔与所述内管组件的中心管螺接或密配 或固定连接。 这种结构形式可使复合环形引射器由大环形混合管提供的一次混 流自行聚中并与主喷嘴喷出的主流体射流束产生小角度的斜交撞击， 从而在主 流体射流和次流体混流两者间剪切接触面积， 并造成流体间的强烈磨擦扰动和 参混， 因而能增强总引射器的混合效率， 从而可缩短总混合管长度。
在优选的实施结构中： 所述外管环套后部呈阶梯状延伸出的管道为独立的 加长管， 该加长管入口为带收缩锥形的总混合室入口， 所述外管环套的末端部 设螺纹与该加长管入端连接。 改变螺纹连接位置可调节主喷嘴到总混合室入口 的距离。 可在一定程度上改变引射器主、 次流体的参混比和输出压， 以便获得 最佳的工况 /性能参数。
本发明多管复式引射器与现有单管引射器比较：现有的单混合管引射器， 大 通径时其引射率及混合管的参混效率较低， 需要通过较长的混合管才能产生足 够的湍流使主次流充分混合。 本发明的多管复式引射器採用主流体从前端部输 入一种高压主流体入， 引射从侧位输入一种低压或无压次流体,从尾部输出一种 混合流； 並採用把前级复合环形引射器套在中央引射器上再串接后级总引射器 上的新结构。 复合环形引射器的大环形混合管输出外周混流， 做为后级总引射 器输入的次流体在总混合室中与主喷嘴输出的中央引射器的中央混流互相撞 击、 互相引射， 再经总混合输出管中二次混流输出二级混流。 本发明的多管复 式引射器克服了单管引射器尤其是大规格单管引射器的轴向尺寸长、 抽射率低 的缺点， 可比现有单管引射器仅靠中央射流自由扩散达到附壁抽吸的引射效果 要好得多。 这使本发明的多管复式引射器具有上述前后级引射器的双重优点。 而且通过改变前级复合环形引射器及后级总引射器的结构参数如喷嘴距、 喉面 比 (混合管与喷嘴孔面积比） 、 混合管长度等结构参数都可调节它的工作点,因而 其工况及工作参数可选性范围大 ，不易产生破坏工况的倒流， 工作稳定性好， 特 别适于需要较大流量、 而尺寸重量受限情况下使用。 本发明的多管复式引射器 可用以进行抽空、 次流体增压、 主次流体混流。 主流体可为较高压力的气体、 液体或气液混流体， 次流体可为压力较氏或无压力的气体、 液体或气液雾及烟 尘等多相混合流体。
本发明的多管复式引射器把大通径单管引射的筒单混合变为用较小通径的 中央引射器和中央引射器外周的多管复合环形引射器的並联混合， 再串连总引 射器的叠加混合， 经过多个混合管并联和二级混合管串连的多次复合引射参混。 由于出口混流速度压力和密度的差异使内外二种混合管的出流强力碰撞和涡 混， 因此增加了互相引射和二次加速混合的功能， 有效解决了现有引射器引射 效率低的问题。 而且能显著提高单元主流体对次流体的引射率及其混合效率， 提高次流体对主流体引射比。 因而它也能增强总抽吸能力、 工作效率。 本发明 的多管复式引射器具有结构筒约紧揍、 相对重量和尺寸较短、 总引射和混流效 率高和处理流体流量能力大， 抗到流能力強等多重优点， 特别适于做大流量高 性能的混流器， 其应用范围较广。
【附图说明】
图 1为本发明多管复式引射器实施例一的半剖结构示意图。
图 2为图 1中 A-A剖面的结构示意图。
图 3为图 1中 B-B剖面的结构示意图。
图 4为本发明多管复式引射器实施例二、 的半剖结构示意图。
图 4.1为图 4中 K-K剖视表示的大环形混合管顶环壁结构示意图。
图 5为本发明多管复式引射器实施例三、 的半剖结构示意图。 图 5.1为图 5中 用 C-C剖视表示的圓形小混合管出口的一种结构图。
图 5.2为图 5.1上的 T-T剖面的示意图。
图 5.3为图 5中用 D-D剖视表示的圓形小混合管出口的另一种结构图。 图 5.4为图 5.3上的 0-0-0剖面展开示意图。
【具体实施方式】
一、 实施例一
本发明多管复式引射器一个实施例採用从前端部输入一种高压主流体， 引 射从侧位输入的一种低压或无压次流体， 从尾部输出一种有压混合流。 它的结 构， 如图 1所示， 它包括前级的复合环形引射器 100a、 中央引射器 100b和后级 的总引射器 100c; 主要组件为一个主流体组件 1、 一个内管组件 2、 一个外管环 套 3和六个外周喷嘴 4。
主流体组件 1的顶部 （前端） 中央向上设主流体进管 11、 向下设中央喷嘴 15 , 主流体组件 1的下部设环形配流套 12, 見图 2, 环形配流套 12周壁上设有 多个横向的次流体孔 13和多个竖向的主流体孔 14, 次流体孔 13与主流体孔 14 交叉隔离。 环形配流套 12的內腔为中央混合室 17, 中央喷嘴 15设在中央混合 室 17的顶部中心， 中央喷嘴 15的外周与环形配流套 12周壁之间设有一道连通 中央混合室 17的环槽 16。各个次流体孔 13从环形配流套 12周壁四周经该环槽 16通入中央混合室 17。 主流体组件 1上的各个主流体孔 14通道经主流体进管 11下端部的扩径段 111斜向上通主流体进管 11。
内管组件 2的扩径顶盘外周固定且密封在环形配流套 12的底端大孔内， 内 管组件 2的顶端（上端）中央设锥形缩径进口 23; 该缩径进口 23的前端对接主 流体组件上的中央混合室 17,该缩径进口 23的末端平滑连接的直管型中心管为 中央混合管 24。 主流体组件 1上的中央喷嘴 15入端直通主流体进管 11 , 中央 喷嘴 15出端喷口朝向与中央混合室 17对接的内管组件 2的缩径进口 23。 主流 体进管 11、 中央喷嘴 15、 六个次流体孔 13、 中央混合室 17和中央混合管 24组 成本发明多管复式引射器前级的中央引射器 100b。
内管组件 2前端（上端）的环形横壁 21上对应主流体多孔通道开有一道主 流体环形槽 22, 并在该主流体环形槽 22的底部均布六个螺孔， 每个螺孔中安装 一个外周喷嘴 4。 各个外周喷嘴 4为圓锥形缩口喷嘴。 主流体组件 1的环形配流 套 12底部与内管组件 2前端的环形横壁 21密封固定连接。 主流体环形槽 22经 环形配流套 12上的各个主流体孔 14与主流体进管 11连通， 主流体环形槽 22 向下连通各外周喷嘴 4的入口。 内管组件 2中心管的中部到下部设外螺纹 25与 外管环套 3前端部 31中央的螺孔相螺合。
外管环套 3前端部 31环形周壁均布六个竖向的带有扩口锥入口 32的外周 小混合管 33。 外管环套 3的前端部 31与内管组件 2的环形横壁 21后端面之间 敞开的空间构成外周混合室 5。 外周混合室 5侧位连通次流体入口， 外周混合室 5顶环壁上每个外周喷嘴 4出端分别与一个对应的外周小混合管 33入端的扩口 锥入口 32对中且留有喷嘴距。 每个外周喷嘴 4与对应的外周小混合管 33同轴 线， 且该轴线与本发明多管复式引射器的轴心线平行。 夹在各外周小混合管 33 出端后侧外管环套 3的内环壁与内管组件 2中心管外环壁之间的圓环空间构成 大环形混合管 35。呈圓环状均布的各外周小混合管 33出端都直通大环形混合管 35 , 请参看图 3。 大环形混合管 35的顶壁为向中心倾斜的锥环面， 各个外周小 混合管 33的出端均设在锥环面上。 如此同轴地设于中央引射器周围的六个外周 喷嘴 4、 一个外周混合室 5、 次流体入口、 六个外周小混合管 33和一个大环形 混合管 35组成本发明多管复式引射器前级的复合环形引射器 100a。
外管环套 3缩径管段内腔构成总混合室 36, 外管环套 3下部延伸出的管道 构成总混合输出管； 总混合室 36周壁的收缩锥形出口平滑直通同径的直圓管段 为总混合圓管 37, 总混合圓管 37直通渐扩径的的管段为扩压管 38, 总混合圓 管与扩压管构成所述的总混合输出管。 内管组件 2 的中心管后部的出口向内收 缩形成主喷嘴 26 (圓锥形缩口喷口）。 主喷嘴 26伸入总混合室 36, 它的喷口离 开且对中总混合室 36的收缩锥形出口及其直通连接的总混合输出管。主喷嘴 26、 大环形混合管 35 出端、 总混合室 36和总混合输出管组成本发明多管复式引射 器的总引射器 100c。
中央引射器 100b同轴的设置在复合环形引射器内， 两者共用位于多管复式 引射器轴线前端的主流体进管 11,总引射器 100c设置在复合环引射器 100a和中 央引射器 100b后方,且与后两者同心串连整体对接；这样设置的前级的复合环形 引射器 100a、 前级的中央引射器 100b和后级的总引射器 100c组成本发明多管 复式引射器。
相对内管组件 2整圏转动外管环套 3 , 即可同步调节主喷嘴 26离总混合室 36的收缩锥形出口的喷嘴距和各个外周喷嘴 4与对应的外周小混合管 33的扩口 锥形入口 32的喷嘴距。 在调整好该喷嘴距之后， 在外管环套 3和内管组件 2上 打孔并设置定位销釘 28, 使外管环套 3与内管组件 2的相对位置固定。
在主喷嘴 26的末端管壁上可设几个斜缝切口 27。这样做的好处是使中央引 射器的出口混流产生少部分径向分流或切向分流，这部分分流能与主喷嘴 26 周 围复合环形引射器输出的混合流充分地掺混， 从而缩短总混合输出管的长度。 主喷嘴 26也可以选用直圓口。
外周喷嘴 4也可以是直圓孔喷嘴，或为汇聚指向外周小混合管 33圓锥形入 口 32的多孔喷嘴， 或为喷雾嘴。 喷雾嘴用于主流体是液体引射气体次流体时使 用， 雾化喷流可以提高主流体对次流体裹挟和卷吸能力即提高多管复式引射器 的引射效率。 外周喷嘴 4 的数量可以根据具体需要增加或减少， 但外周小混合 管 33的数量必须与外周喷嘴 4的数量一致， 且每一个外周喷嘴 4的轴线必须与 对应外周小混合管 33的轴线相一致。
工作时，主流体经主流体进管 11 ,进入中央引射器 100b和复合环形引射器 100a。 一部分主流体通过复合环形引射器 100a的各个外周喷嘴 4引射从外周混 合室 5周边进入外周混合室 5的次流体、 共同进入各外周小混合管 33进行混合 並汇经大环形混合管 35向总引射器 100c的总混合室 36输出一级混流次流体； 另一部分主流体通过中央引射器 100b的中央喷嘴 15引射从环形配流套 12周壁 进入中央混合室的次流体向中央混合管 24喷射， 並从设在中央混合管 24出端 的总引射器主喷嘴 26喷出一级混流主流体， 该主喷嘴 26喷出的一级混流主流 体在总引射器的总混合室 36内引射周围大环形混合管 35输出的一级混流次流 体，共同进入总引射器的总混合输出管做二次混合和升压输出， 完成高压主流体 泵抽氏压次流体的混流输送。
二、 实施例二、
本实施例也是从前端部输入一种高压主流体， 引射从侧位输入的一种低压 或无压次流体，从尾部输出一种混合流， 它的结构， 如图 4所示， 它包括前级的 复合环形引射器 100a、 中央引射器 100b和后级的总引射器 100c; 主要组件为主 流体组件 10、 内管组件 20和外管环套 30这三个主要部件。
主流体组件 10的顶部 （前端） 中央设主流体进管 110, 其下部设扩径的环 形配流套 120;主流体进管 110的下端设扩径腔 1110。环形配流套 120周壁上设 有多个横向 （与环形配流套 120周壁垂直） 的次流体孔 130和多个竖向 （与环 形配流套 120周壁平行）的主流体孔 140, 次主流体孔 130与主流体孔 140交叉 隔离。 环形配流套 120的内腔 160的顶部中心设中央喷嘴 150, 中央喷嘴 150的 外周将环形配流套 120的内腔 160分割成环槽状。
内管组件 20固定在环形配流套 120的后端部， 内管组件 20上端 （前端） 环形横壁 210的扩口外套 2110与主流体组件 10环形配流套 120下部的外周密 封且固连。 内管组件 20的前端 （上端） 中央设凹槽 220对接主流体组件 10上 环形配流套 120的内腔 160, 该凹槽 220的底部中央设锥形缩径进口 230; 该凹 槽 220、 缩径进口 230和主流体组件 10上环形配流套 120的内腔 160构成中央 混合室。 各个次流体孔 130穿过环形配流套 120周壁通入中央混合室。 主流体 组件 10上的中央喷嘴 150入端直通主流体进管 110, 中央喷嘴 150出端喷口穿 过内管组件 20的凹槽 220伸入缩径进口 230中。 内管组件 20的缩径进口 230 的末端平滑连接的直管型中心管内腔为中央混合管 240。 如此设置的中央喷嘴 150、 各个次流体孔 130、 中央混合室和中央混合管 240组成本发明多管复式引 射器前级的中央引射器 100b。
主流体组件 10上的各个主流体孔 140经主流体进管 110下端部的扩径段 1110斜向上通主流体进管 110。环形配流套 120后端对应各个主流体孔 140开有 一道主流体环形槽 190。 内管组件 20的环形横壁 210的下凸外环上对应主流体 环形槽 190均布一圏锥环形均布的六个向内倾斜的外周喷嘴 280。主流体环形槽 190经环形配流套 120上的各个主流体孔 140与主流体进管 110连通，主流体环 形槽 190向下连通各外周喷嘴 280的入口。 内管组件 20中心管的中部到下部设 有外螺纹 250与外管环套 30中央的螺孔相螺合。 外管环套 30顶部扩孔腔端口 3110套接内管组件 20环形横壁 210上端的扩口外套 2110, 外管环套 30前端部 310锥环形周壁均布六个向内倾斜的入端带有扩口锥入口 320 的外周小混合管 330。 外管环套 30的前端部 310与内管组件 20的环形横壁 210后端面之间的环 形空间构成外周混合室 50。 各个外周喷嘴 280出端内侧的环形横壁 210上均布 多个通孔 270, 使中央混合室与外周混合室 50的内环侧连通。
内管组件 20上端 （前端）环形横壁 210的扩口外套 2110外围和外管环套 30前端口 （上端口） 间设连接套 3110, 它包围外周混合室 50形成密闭环形腔。 在该连接套 3110侧壁设多个次流体入口 390。 各个次流体入口 390从侧位通入 外周混合室 50。外周混合室 50顶环壁上每个外周喷嘴 280出端分别与一个对应 的外周小混合管 330入端的扩口锥入口 320对中且留有喷嘴距。 每个外周喷嘴 280与对应的外周小混合管 330同轴线，该轴线与本发明多管复式引射器的轴心 线同向相斜或相交。 外管环套 30的前端部 310后端位于各外周小混合管 330出 端后侧的内壁与内管组件 20的中心管的外壁之间的圓环空间构成大环形混合管 350。 呈圓环状均布的各外周小混合管 330出端都直通大环形混合管 350。 大环 形混合管 350的顶壁为倾斜的环面， 从而使各个外周小混合管 330的出端均为 斜截面形出口， 各个斜截面形出口均朝向大环形混合管 350 出口和本发明多管 复式引射器的轴心线。 参见图 4.1 , 在大环形混合管 350入口顶环壁上设有一圏 契形槽 340构成大环形槽 340,该大环形槽经过各小混合管 330的出端圓孔中心 并与之相贯。 如上述的一个外周混合室 50和内连的多个通孔 230及其外连通的 多个次流体入口 390、六个外周喷嘴 280及其分别对中的六个外周小混合管 330、 与各外周小混合管出口相贯通的一个大环形槽 340和一个大环形混合管 350,它 们共同组成复合环形引射器 100a。 该复合环形引射器同轴地设于前述中央引射 器 100b的周围， 两者共同构成本发明多管复式引射器的前级引射混合器。
外管环套 30的前端部 310后端设螺纹连接加长管 30，， 加长管 30， 前端的 内部是缩径管段 310，。 外管环套 30的加长管 30， 缩径管段 310， 的内腔构成总 混合室 360, 外管环套 30的加长管 30， 下部呈阶梯状延伸出的管道构成总混合 输出管； 总混合输出管由总混合室 360周壁的收缩锥形出口平滑直通同径的总 混合圓管 370, 和总混合圓管 370直通渐扩径的扩压管 380构成。 由内管组件 20的中心管后部的出口形成主喷嘴 260 (直圓喷口 ), 主喷嘴 260伸入总混合室 360, 它的喷口离开且对中总混合室 360的收缩锥形出口及其直通连接的总混合 输出管。 由如此同轴设置的主喷嘴 260、 大环形混合管 350出口、 总混合室 360 和总混合输出管组成本发明多管复式引射器的后级总引射器 100c。
中央引射器 100b同轴设置在复合环形引射器 100a内， 两者共用位于多管复 式引射器轴线前端的主流体进管 110,总引射器 100c设置在复合环引射器 100a 和中央引射器 100b后方,且与后两者同心串连整体对接；这样设置的前级的复合 环形引射器 100a、 前级的中央引射器 100b和后级的总引射器 100c组成本发明 多管复式引射器。
主喷嘴 260也可以选用锥孔喷口或为在锥孔喷口的孔口壁上再加均布通槽。 外周喷嘴 280可以外加直圓孔喷嘴或锥孔喷孔， 或外加汇聚指向外周小混合管 330扩口锥形入口 320的多孔喷嘴， 或外加喷雾嘴。 外周喷嘴 280的数量可以根 据具体需要增加或减少， 但外周小混合管 330的数量必须与外周喷嘴 280的数 量一致， 且每一个外周喷嘴 280的轴线必须与对应外周小混合管 330的轴线相 一致。
工作时， 主流体从主流体进管 110进入中央引射器 100b和复合环形引射器 100a。 一部分主流体通过复合环形引射器 100a的各个外周喷嘴 280引射从外管 环套 30连接套 3110侧壁的各个次流体进口 390和从中央混合室经内管组件 20 的环形横壁 210上各个通孔 270进入外周混合室 50的次流体、 共同进入各外周 小混合管 330进行混合並经大环形混合管 350向总引射器 100c的总混合室 360 输出一级混流次流体； 另一部分主流体通过中央引射器 100b的中央喷嘴 150引 射从环形配流套 120周壁进入中央混合室的次流体向中央混合管 240喷射， 並 从设在中央混合管 240出口总引射器的主喷嘴 260喷出一级混流主流体， 该主 喷嘴 260喷出一级混流主流体在总引射器的总混合室 360内引射周围大环形混 合管 350输出的一级混流次流体， 共同进入总引射器 100c的总混合输出管做二 次混合和升压输出， 完成高压主流体泵抽氏压次流体的混流输送。
若将连接套 3110侧壁上的多个次流体进口 390封闭并改接一根次流体进口 管， 本实施例将变为从前端部输入一种高压主流体， 引射从侧位输入的两种低 压或无压次流体,从尾部输出一种混合流。
三、 实施例三：
本实施例从前端部输入一种高压主流体， 引射从侧位输入的一种低压或无 压次流体,从尾部输出一种混合流， 它的结构， 如图 5所示， 它包括前级的复合 环形引射器 100a、 中央引射器 100b和后级的总引射器 100c; 主要组件为主流体 组件 100、 内管组件 200、 中央喷嘴组件 1500、 一个外管环套组件 300及其延伸 加长管 300，。
主流体组件 100的顶部 （前端） 中央设主流体进管 1100、 其下端设法兰； 该法兰与内管组件 200上部环形配流套 2100顶端扩口 11100的外套法兰 21100 密封对接，封住中间的中央喷嘴组件 1500; 中央喷嘴组件 1500呈中部带有环形 槽 15200的上下双盘结构， 有多个纵向导流孔 15100的上盘设在主流体进管孔 1100中， 下盘圓锥插入并封住环形配流套 2100内腔 21600的顶圓口中； 所述下 盘圓锥上设几个能聚集射流的小斜喷孔 15300形成多孔中央喷嘴。 所述环形配 流套 2100周壁上设有六个横向的次流体孔 21300和六个竖向的主流体孔 21400, 次流体孔 21300与主流体孔 21400垂直交叉互相隔离。 各个次流体孔 21300横 穿过环形配流套 2100周壁通入其圓内腔 21600中， 该圓内腔 21600及其锥形缩 径 2300构成中央混合室，所述中央喷嘴正对并凸入中心混合室的入口锥孔 2300 中且留有喷嘴距， 该锥孔平滑直通内管组件 200向下延伸的中心管 2400, 构成 中央混合管； 中央混合管由中心管 2400上部锥形缩径腔 2300、 小径段的入口 喉管 2401,和下部稍渐扩径的中心扩压管 2402三段管组成。 上述中央喷嘴、 四 周壁上设次流体孔 21300 的中央混合室， 及与混合室轴向直通的中央混合管共 同组成本发明多管复式引射器前级的中央引射器 100b。
主流体进管 1100经中央喷嘴组件的导流孔 15100及横向环槽 15200, 经过 扩径腔 11100再通入内管组件 200上部环形配流套 2100周壁上的六个竖向的主 流体孔 21400形成外周喷嘴， 它们朝向外管环套 300前端部 3100周壁上均布设 置的六个竖向外周小混合管 3300。 每个外周喷嘴出端分别与一个对应外周小混 合管 3300入端的扩口锥入口 3200对中且留有喷嘴距， 每个外周喷嘴与对应的 外周小混合管 3300同轴线， 且该轴线与本发明多管复式引射器的轴心线平行。 所述外周喷嘴可以采用直圓孔喷嘴或锥孔喷嘴， 或是汇聚指向外周小混合管 3300圓锥形入口 3200的多孔喷嘴， 或是喷雾嘴。
外管环套组件 300的前部扩径套 31100的侧位设次流体进管 31200;扩径套 31100的端孔口与内管组件 200的环形配流套 2100顶部外圓面之间密封连接； 扩径套 31100的内孔与内管组件 200的环形配流套 2100上部外表面之间的空间 构成外周混合室 500。 所述各外周喷嘴位于外周混合室 500顶环壁上， 所述次流 体进管 31200通入外周混合室内的外周喷嘴恻位， 所述各外周小混合管 3300圓 锥形入口 3200也都位于外周混合室内， 而且环形配流套 2100上的各个次流体 孔 21300的入口也都位于外周混合室 500内， 这使中央混合室经各个次流体孔 21300与外周混合室 500连通。
所述内管组件 200的中心管 2400外壁与外管环套 300中央孔间设连接螺纹 2500。相对内管组件 2100使外管环套 300转动 1/6圏的整数倍再固定彼此位置， 勿必使各外周喷嘴 280与相应的外周小混合管 330分别对中、 可同步调节各个 外周喷嘴 280与对应的外周小混合管 330的扩口锥形入口 320的喷嘴距和主喷 嘴 260 离总混合室 360的收缩锥形出口的主喷嘴距， 同时可改变总混合室 360 的容积。
外管环套 300轴向超过外周小混合管 3300出口的外壁孔与中心管 2400外 壁之间的圓环空间构成较短的大环形混合管 3500 , 大环形混合管围在主喷嘴 2600周围， 其环形输出口平滑通入总混合室 3600。 各外周小混合管 3300的出 口都在大环形混合管的环形顶面上， 它们的出口特别採用以下可增加引射混流 效率的几种形式：
1、大环形混合管 3500的顶壁为稍流向中心内倾斜的环形面 33100,呈圓环 状均布的各外周小混合管 3300出口都直通且相贯与大环形混合管 3500顶壁向 中心内倾斜的环面 33100上， 如示。 此种结构外周小混合管 3300的输出混流进 入大环形混合管 3500时会向总混合室 3600集中， 这加强了与主喷嘴输出混流 的轴向磨擦和互撞参混。
2、在大环形混合管的环形顶面的圓形小混合管出端孔口同侧上都设同向倾 斜半圓形倒角扩口如图 5.1、 5.2所示。 外周小混合管 3300的全部或互相间隔的 半敉孔口出端 3301同侧上都设有同向倾斜倒角性的半圓扩口 3302,各半圓扩口 的方向与大环形混合管顶壁环面 33100 中心环线大体一致或相切， 小混合管出 端孔口上的倾斜半圓形倒角扩口， 可用不大于小混合管孔径的铣刀从小混合管 孔侧位以锐倾斜角单边铣出。 此种结构外周小混合管 3300的输出混流进入大环 形混合管 3500时会产生旋流， 这加强了与主喷嘴输出混流的周向磨擦和参混。
3、 当所述大环形混合管较短时， 在大环形混合管的环形顶面的圓形小混合 管出口也可採用斜平口如图 5.3、 5.4所示， （它由略大于小混合管孔径的端铣刀 对 d、混合管孔口斜铣平面形成)即所述圓形小混合管的全部或互相间隔的半敉出 端孔口设成能产生斜喷的斜平口， 各斜平口朝方都与大环形混合管环形中心线 的切向大体一致， 即使各圓形小混合管孔口的斜喷汇成在大环形混合管内的旋 流。 其好处与上述圓形小混合管带倾斜倒角形的半圓扩类似。 此种结构外周小 混合管 3300的输出混流进入大环形混合管 3500时会会产生旋流， 这加强了与 主喷嘴输出混流的周向磨擦和参混。
上列几种形状出口的外周小混合管 3300和同轴地设于中央引射器的周围的 六个外周喷嘴、 设在有一个次流体进口管 31200的外周混合室 500内、 六个外 周小混合管 3300连通一个大环形混合管 3500组成本发明多管复式引射器前级 的复合环形引射器 100a。
外管环套 300的下部出端用法兰 33200与加长管 300， 直通对接， 加长管 300， 前端是缩径管段。加长管 300， 漏斗形缩径管段的内腔构成总混合室 3600; 加长管 300， 漏斗形缩径管平滑连通的直圓管 3700, 或者直圓管出口再直通渐 扩径的扩压管 3800; 它们都可构成总混合输出管； 内管组件 200的中心管 2400 的出端口形成主喷嘴 2600, 主喷嘴 2600的孔口壁上均布斜向通槽 2601或径向 通槽（主喷嘴也可是直圓喷口或其它形式低阻力喷口）。 主喷嘴 2600伸入总混 合室 3600,它的喷口离开且对中总混合室 3600的收缩锥形出口及其直通连接的 总混合输出管。 由如此同轴设置的主喷嘴 2600、 环绕周围的大环形混合管 3500 出口、 总混合室 3600和总混合输出管组成本发明多管复式引射器后级的总引射 器 100c。
当设有如上述两种能产生旋流输出的外周小混合管出口时， 可配用孔口壁 上设有均布斜向通槽 2601的主喷嘴， 并使主喷嘴孔口壁上的斜向通槽与外周小 混合管出口旋流方向相反，造成中央引射器 100c主喷嘴和复合环形引射器 100a 大环形混合管输出的内外两股混流进入总混合室过程中就能互相反转强烈磨擦 和参混，这种复合环形引射器 100a的前级结构可部分替代后序的总引射器 100c 功能使其总混合输出管大为缩短。
本实例的中央引射器 100b同轴设置在复合环形引射器 100a内， 两者共用位 于多管复式引射器轴线前端的主流体进管 1100,总引射器 100c设置在复合环引 射器 100a和中央引射器 100b轴线后方， 且与后两者同心串连整体对接； 这样 设置的前级的复合环形引射器 100a、前级的中央引射器 100b和后级的总引射器 组成本发明多管复式引射器。
工作时， 一部分主流体通过复合环形引射器的外周喷嘴引射进入外周混合 室 500 的次流体、 共同进入各外周小混合管 3300进行混合並经大环形混合管 3500向总引射器的总混合室 3600输出一级混流次流体；另一部分主流体通过中 央引射器的中央喷嘴引射从外周混合室 500经环形配流套 1200周壁的次流体通 道进入中央混合室的次流体向中央混合管 2400喷射， 並从设在中央混合管出口 的总引射器主喷嘴 2600喷出一级混流主流体， 该主喷嘴 2600喷出一级混流主 流体在总引射器的总混合室 3600内引射周围大环形混合管 3500输出的一级混 流次流体，共同进入总引射器的总混合输出管做二次均压混合输出， 高效完成高 压主流体泵抽氏压次流体的混流输送。
以上所述， 仅为本发明较佳实施例， 不以此限定本发明的范围； 实施本发 明并不仅只能有上例实施例的部件结构,亦可对部件结构和配置做适当拆分、 组 合和变换， 例如交换大环形混合管的结构形式， 以完成本发明的功能， 依本发 明的技术方案及说明书内容所作的等效变化与修饰， 皆应属于本发明涵盖的范 围。

Claims

权利要求
1. 多管复式引射器， 包括： 前级的复合环形引射器、 中央引射器和后级的 总引射器；
该中央引射器有中央喷嘴、 中央混合室和中央混合管； 中央喷嘴位于中央 混合室顶部中心， 其入端直通主流体进管，出端喷口正对中央混合室的锥形出口 并保有喷嘴距， 中央混合室的锥形出口平滑直通的中央混合管； 中央混合室的 侧壁四周设次流体进口；
该复合环形引射器有多个呈环形均布的外周喷嘴及同等数目的外周小混合 管、 一个外周混合室和一个大环形混合管； 外周喷嘴入端连通主流体进管， 出 端对中外周小混合管的入口且留有喷嘴距， 每一个外周喷嘴与对应的外周小混 合管同轴； 外周混合室的侧位设次流体入口； 各个外周小混合管的入端均位于 外周混合室内而出端都直通大环形混合管， 各外周小混合管出端的孔口都均布 在所述大环形混合管的顶壁环面上；
该总引射器有主喷嘴、 总混合室和总混合输出管； 主喷嘴位于复合环形引 射器的中央， 主喷嘴前端接中央混合管的出端， 主喷嘴后端伸入总混合室中央； 主喷嘴与总混合室的收缩锥形出口对中且保有喷嘴距； 总混合室的入端连接复 合环形引射器的大环形混合管的输出口， 总混合室出端连通总混合输出管； 所述中央引射器同轴地设置在复合环形引射器内， 两者的入端共用主流体 进管； 所述总引射器设置在复合环引射器和中央引射器后方,且与后两者同心串 连整体对接， 构成多管复式引射器。
2.根据权利要求 1所述的多管复式引射器， 其中： 所述的中央引射器设在主 流体组件和内管组件上； 主流体组件顶部中央向上设所述的主流体进管、 向下 设所述的中央喷嘴， 主流体组件下部设环形配流套；环形配流套的內腔与内管组 件上端的锥形缩径进口对接为所述中央引射器的中央混合室； 环形配流套周壁 上设有多个横竖交叉隔离的次流体孔和主流体孔； 各个主流体孔上通所述的主 流体进管、 下接所述的外周喷嘴； 各个次流体孔从四周通入所述的中央混合室； 所述的中央喷嘴出端喷口朝向内管组件的锥形缩径进口； 内管组件的锥形缩径 进口的出端平滑连接的中心管为所述中央混合管。
3. 根据权利要求 2所述的多管复式引射器， 其中： 所述的复合环形引射器 设置在外管环套和内管组件上； 多个所述的外周喷嘴均布在内管组件前端四周， 多个所述外周小混合管均布在外管环套上并与上述的外周喷嘴一一对应； 所述 的外周混合室设在内管组件前端环形横壁与外管环套前端之间， 所述的大环形 混合管由夹在各外周小混合管出端的中心管外壁和外管环套内壁之间的圓环空 间构成。
4. 根据权利要求 3所述的多管复式引射器， 其中： 所述的总引射器设在外 管环套后部和内管组件的中心管后部； 所述的主喷嘴由内管组件的中心管后部 的出口形成； 所述的总混合室和所述的总混合输出管由该外管环套后部呈阶梯 状延伸出的管道构成， 该管道前部的收缩锥内腔构成所述的总混合室， 该管道 中该收缩锥出口平滑直通同径的直圓管段为总混合圓管， 该直圓管段直通渐扩 径的管段为扩压管， 总混合圓管与扩压管构成所述的总混合输出管。
5. 根据权利要求 4所述的多管复式引射器， 其中： 所述的大环形混合管的 顶壁为向中心倾斜的锥环面， 所述的各个外周小混合管的出端均设在该锥环面 上。
6. 根据权利要求 4所述的多管复式引射器， 其中： 所述大环形混合管的入 口环形面上设有一圏大环形槽， 它是设在各外周小混合管出口端的一圏扁槽或 楔形槽， 该大环形槽经过各外周小混合管的出端孔中心并与之相贯。
7. 根据权利要求 4所述的多管复式引射器， 其中： 所述环形配流套外围和 外管环套上部内孔间设有密闭的环形腔形成所述的外周混合室， 该环形腔侧壁 设次流体入口管。
8. 根据权利要求 7所述的多管复式引射器， 其中： 所述的各个外周喷嘴出 口内侧的内管组件上均布多个通孔， 这些通孔使中央混合室与外周混合室内环 侧连通。
9. 根据权利要求 4所述的多管复式引射器， 其中： 所述每个外周喷嘴及对 应的外周小混合管的轴线与多管复式引射器的中轴线平行； 所述内管组件中央 的中央混合管与所述外管环套中心孔以螺纹连接。
10. 根据权利要求 4所述的多管复式引射器， 其中： 所述的每个外周喷嘴同 轴对应的外周小混合管呈锥环状均布在外管环套上； 所述各外周小混合管中心 线与复合串级射流泵的中轴线同向相斜或相交； 所述外管环套中心孔与所述内 管组件的中心管螺接或密配或固定连接。
11. 根据权的利要求 4所述的多管复式引射器， 其中： 所述外管环套末端延 伸出的管道为独立的加长管， 该加长管为带收缩锥形总混合室的总混合输出管， 所述外管环套的末端部设螺纹或法兰与该加长管入端连接。
12. 根据权利要求 1所述的多管复式引射器， 其中： 所述大环形混合管的顶 壁环面上的圓形小混合管的孔口一侧设有倒角， 该倒角由孔口端倾斜的半圓扩 口形成， 各半圓扩口的长轴方向都与大环形混合管环形中心线的切向大体一致。
13. 根据权利要求 1所述的多管复式引射器， 其中： 所述圓形小混合管的全 部或互相间隔的半敉出端孔口上设有能产生斜喷的斜平口， 各斜平口朝向都与 大环形混合管环形中心线的切向大体一致。
14. 根据权利要求 1所述的多管复式引射器， 其中： 所述的圓形小混合管入 口段设有渐缩形圓锥口， 渐缩形圓锥口或者平滑直通圓形小混合管， 或者在渐 缩形锥口出端有短喉径孔， 短喉径孔出端平滑直通圓形小混合管， 所述短喉径 孔的长度和直径都小于圓形小混合管的直径。
15. 根据权利要求 9所述的多管复式引射器，其中利用所述中央混合管与外 管环套的连接螺纹调节两者之间的相对位置， 即转动连接螺纹的 1/N 圏的整数 倍， N 为外周小混合管个数， 并使外各外周喷嘴与对应的外周小混合管入口仍 保持对中， 再使中央混合管与外管环套互相固定， 则可同时调节外周喷嘴距和 主喷嘴距， 以改变多管复式引射器的参数和性能。
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EP3163093A1 (en) * 2015-10-30 2017-05-03 Xerex Ab High vacuum ejector
US10202984B2 (en) 2012-12-21 2019-02-12 Xerex Ab Vacuum ejector with multi-nozzle drive stage and booster
US10457499B2 (en) 2014-10-13 2019-10-29 Piab Aktiebolag Handling device with suction cup for foodstuff
US10753373B2 (en) 2012-12-21 2020-08-25 Piab Aktiebolag Vacuum ejector nozzle with elliptical diverging section
US10767662B2 (en) 2012-12-21 2020-09-08 Piab Aktiebolag Multi-stage vacuum ejector with molded nozzle having integral valve elements
US10767663B2 (en) 2012-12-21 2020-09-08 Piab Aktiebolag Vacuum ejector with tripped diverging exit flow

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CN105547634B (zh) * 2015-12-23 2018-03-06 北京航天益森风洞工程技术有限公司 环状缝隙引射器
CN106122120B (zh) * 2016-07-28 2018-11-13 浙江工业大学 复合型两级多通道气液射流泵
CN110360561B (zh) * 2019-08-21 2020-08-18 宁波方太厨具有限公司 引射管及包含其的灶具燃烧器
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10202984B2 (en) 2012-12-21 2019-02-12 Xerex Ab Vacuum ejector with multi-nozzle drive stage and booster
US10753373B2 (en) 2012-12-21 2020-08-25 Piab Aktiebolag Vacuum ejector nozzle with elliptical diverging section
US10767662B2 (en) 2012-12-21 2020-09-08 Piab Aktiebolag Multi-stage vacuum ejector with molded nozzle having integral valve elements
US10767663B2 (en) 2012-12-21 2020-09-08 Piab Aktiebolag Vacuum ejector with tripped diverging exit flow
US10457499B2 (en) 2014-10-13 2019-10-29 Piab Aktiebolag Handling device with suction cup for foodstuff
EP3163093A1 (en) * 2015-10-30 2017-05-03 Xerex Ab High vacuum ejector
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