WO2013174240A1

WO2013174240A1 - A combined jet with multiple pipes

Info

Publication number: WO2013174240A1
Application number: PCT/CN2013/075831
Authority: WO
Inventors: 韩铁夫; 韩笃坤
Original assignee: Han Tiefu; Han Dukun
Priority date: 2012-05-25
Filing date: 2013-05-17
Publication date: 2013-11-28
Also published as: CN103423215A; CN103423215B

Abstract

A combined jet with multiple pipes comprises a fore composite annular jet, a central jet and a post main jet. The central jet is co-axially arranged within the composite annular jet, and they share a primary fluid input pipe together. The main jet is deposited behind both combined annular jet and central jet, and is also co-axially connected in series with them. The combined jet with multiple pipes has high efficiency, and the volume to be guided is relatively large.

Description

Multi-tube double ejector

[Technical Field]

This invention relates to a mixed flow injection device, and more particularly to a multi-tube multiple ejector for mixed fluid injection.

【Background technique】

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. Mixed, 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. Rise to achieve the purpose of oil recovery. 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.

[Summary of the Invention]

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. .

During operation, 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 total mixing output tube of the ejector is used for secondary mixing and boosting output, and the mixed flow of the low pressure secondary fluid of the high pressure main fluid pump is completed.

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. In each small-diameter outer peripheral small 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. It is possible to increase the total flow rate of the ejector, but the mixed mass transfer performance in the small-diameter outer peripheral small mixing tube is poor, and a long mixing tube is required to sufficiently mix in the traveling. In order to overcome this drawback, 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.

When the outer peripheral small mixing tube is sprayed into the large annular mixing tube, the pressure difference density is unbalanced. The lateral migration and mixing of the fluid in the large annular mixing tube is caused, which can accelerate the mixing efficiency of the heat and mass transfer of the primary and secondary fluids in the annular space and the pre-stage composite annular ejector, and is particularly beneficial for preventing the front-stage complex annular ejector. The failure of the device is reversed. Therefore, 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. Therefore, 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.

In a specific implementation structure, 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. a circular space between the outer wall of the central tube and the inner wall of the outer tube collar; 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.

One of the structural forms of the large annular mixing tube is: 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. Here, 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. Advantageously, 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. When the large annular mixing tube is extremely short and the annular groove is relatively deep, the annular groove can replace the large annular mixing tube work h

dagger.

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. This not only makes the exit jet of the peripheral small mixing tube strengthen and mix, which is also beneficial to the large annular mixing of the mixed flow from the main nozzle of the central mixing tube of the central ejector to the annular ejector in the total mixing chamber. The swirling flow of the tube output enhances the friction and mixing, and enhances the heat and mass transfer capability and the priming efficiency of the secondary fluid mixed flow output from the main nozzle of the total ejector ejector to the secondary fluid mixed output of the annular ejector.

When the large annular mixing tube is short, 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.

In a preferred embodiment, a 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.

Further, 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.

In a preferred embodiment, 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圏, 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. Fixed, 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. By changing the above 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.

In a preferred embodiment, 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.

In a preferred embodiment, the pipe extending in a stepped manner at the rear of the outer pipe collar is an independent elongated pipe, and the elongated pipe inlet is a total mixing chamber inlet with a contracted cone, and 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. Then, the secondary mixed flow in the total mixed output pipe outputs the secondary mixed flow. 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. Moreover, by changing the structural parameters of the pre-composite annular ejector and the post-stage total ejector, such as nozzle distance, throat ratio (mixing tube to nozzle hole area ratio), mixing tube length and other structural parameters, its working point can be adjusted. Therefore, the working condition and the working parameter have a wide range of options, and it is not easy to generate reverse flow under the working condition, and the working stability is good, and is particularly suitable for use when a large flow rate is required and the size and weight are limited. 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, and 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. Moreover, 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.

[Description of the Drawings]

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.

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.

【detailed description】

First, the first embodiment

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. An outer tube loop 3 and six outer peripheral nozzles 4.

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. Main fluid inlet pipe 11, central nozzle 15, six secondary fluid orifices 13, central mixing chamber 17, and central mixing tube 24 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. A peripheral nozzle 4. 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.

Outer tube collar 3 front end portion 31 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 composite annular ejector 100a of the pre-stage.

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 For the total mixing tube 37, 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.

Simultaneously rotating the outer tube collar 3 relative to the inner tube assembly 2, 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. The nozzle distance of the tapered inlet 32. After the nozzle distance is adjusted, the outer tube collar 3 and the inner tube assembly 2 are perforated and a positioning pin 28 is provided to fix the relative position of the outer tube collar 3 and the inner tube assembly 2.

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. .

In operation, 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.

Second, the second embodiment

In this embodiment, 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 The central ejector 100b of the front stage of the ejector.

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. a peripheral mixing chamber 50 and an interconnected plurality of through holes 230, and a plurality of secondary fluid inlets 390, six peripheral nozzles 280, and six outer peripheral small mixing tubes 330, respectively A large annular groove 340 through which the outer peripheral small mixing tube outlet passes and a large annular mixing tube 350, which together constitute a composite annular ejector 100a. 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. .

In operation, 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 central mixing tube 240. 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.

If a plurality of secondary fluid inlets 390 on the side wall of the connecting sleeve 3110 are closed and a secondary fluid inlet tube is closed, 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.

Third, the third example:

In this embodiment, 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. Stage composite annular ejector 100a, central ejector 100b and final stage total ejector 100c; main components are main fluid assembly 100, inner tube assembly 200, central nozzle assembly 1500, an outer tube collar assembly 300 and It extends to lengthen the tube 300.

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. Relative to the inner tube assembly 2100, 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.

The 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:

1. 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. When the output of the outer peripheral small mixing tube 3300 is mixed into the large annular mixing tube 3500, it is concentrated toward the total mixing chamber 3600, which enhances the axial friction and collision mixing with the main nozzle output mixed flow.

2. In the same direction as the outlet end of the circular small mixing tube on the annular top surface of the large annular mixing tube, 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. Out. When the output of the outer peripheral small mixing tube 3300 is mixed into the large annular mixing tube 3500, a swirling flow is generated, which enhances the circumferential friction and mixing of the mixed flow with the main nozzle.

3. When the large annular mixing tube is short, 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. Stream. The benefits are similar to the semi-circular expansion of the circular small mixing tube with a slanted chamfer. When the output of the outer peripheral small mixing tube 3300 is mixed into the large annular mixing tube 3500, 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.

When there are two outer small mixing tube outlets capable of generating a swirling output as described above, 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.

In operation, 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 equalizing mixed output, and the mixed flow of the high pressure main fluid pump and the secondary fluid is efficiently performed.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. The implementation of the present invention not only has the component structure of the above-described embodiment, but also can properly split the component structure and configuration. Combining and transforming, for example, exchanging the structural form of the large annular mixing tube to perform the functions of the present invention, equivalent changes and modifications made in accordance with the technical solutions and the contents of the specification of the present invention are all within the scope of the present invention.

Claims

Rights request

1. Multi-tube multiple ejector, comprising: a composite annular ejector in the front stage, a central ejector and a total ejector in the latter stage;

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; the peripheral nozzle inlet end communicates with the main fluid inlet tube, and the outlet end is centered The inlet of the small mixing tube has a nozzle distance, and each peripheral nozzle is coaxial with the corresponding outer small mixing tube; the secondary mixing chamber has a secondary fluid inlet at the lateral position; the outer peripheral small mixing tube inlets are located in the outer mixing chamber. The outlet end is directly connected to the large annular mixing tube, and the outlets of the outer peripheral small mixing tubes are uniformly distributed on the top wall annular surface of the large annular mixing tube;

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. The central ejector is coaxially disposed within the composite annular ejector, the inlet ends of which share a primary fluid inlet tube; the total ejector is disposed behind the composite ring ejector and the central ejector And the latter two are concentrically connected in series to form a multi-tube double ejector.

2. The multi-tube multiple ejector according to claim 1, wherein: said central ejector is disposed on a main fluid assembly and an inner tube assembly; said main fluid assembly is disposed at a top center of said main fluid assembly a central nozzle is disposed downwardly, and an annular distribution sleeve is disposed at a lower portion of the main fluid assembly; a lumen of the annular distribution sleeve is abutted with a tapered reduced diameter inlet of the upper end of the inner tube assembly as a central mixing chamber of the central ejector; The peripheral wall of the distribution sleeve is provided with a plurality of secondary fluid holes and main fluid holes which are vertically and vertically separated; each main fluid hole passes through the main body a fluid inlet pipe, connected to the peripheral nozzle; each secondary fluid hole passes into the central mixing chamber from the periphery; the central nozzle outlet nozzle faces the tapered reduced diameter inlet of the inner tube assembly; The center tube of the tapered end of the tapered reduced diameter inlet is the central mixing tube.

3. The multi-tube multiple ejector according to claim 2, wherein: the composite annular ejector is disposed on the outer tube collar and the inner tube assembly; and the plurality of outer circumferential nozzles are evenly distributed in the inner tube assembly Around the front end, a plurality of the outer small mixing tubes are evenly distributed on the outer tube ring sleeve and are in one-to-one correspondence with the outer peripheral nozzles; the outer circumference mixing chamber is disposed between the annular transverse wall at the front end of the inner tube assembly and the front end of the outer tube collar The large annular mixing tube is composed of a circular space sandwiched between the outer wall of the central tube of the outer peripheral small mixing tube and the inner wall of the outer tube sleeve.

4. The multi-tube multiple ejector according to claim 3, wherein: said total ejector is disposed at a rear portion of the outer tube collar and a rear portion of the inner tube assembly; said main nozzle is provided by the inner tube An outlet of the rear portion of the central tube of the assembly is formed; the total mixing chamber and the total mixed output tube are formed by a pipe extending stepwise from the rear of the outer tube sleeve, and the contraction cone cavity at the front portion of the tube Forming the total mixing chamber, the straight circular pipe section of the pipe which is smoothly straight through the same diameter is a total mixing pipe, and the pipe section of the straight pipe section which is straight through the diameter is a diffuser pipe, the total mixing pipe and the expansion pipe The pressure tube constitutes the total mixed output tube.

5. The multi-tube multiple ejector according to claim 4, wherein: the top wall of the large annular mixing tube is a cone-ring surface inclined toward the center, and the outlet ends of each of the outer small mixing tubes are provided On the surface of the cone.

6. The multi-tube multiple ejector according to claim 4, wherein: the annular annular surface of the large annular mixing tube is provided with a large annular groove, which is a flattened flat portion disposed at the outlet end of each outer small mixing tube. A groove or a wedge groove that passes through and intersects the center of the exit hole of each of the outer small mixing tubes.

7. The multi-tube multiple ejector according to claim 4, wherein: a closed annular cavity is formed between the outer circumference of the annular distribution sleeve and the upper inner hole of the outer tube collar to form the outer circumference mixing chamber, the annular chamber The side wall is provided with a secondary fluid inlet pipe.

8. The multi-tube multiple ejector according to claim 7, wherein: the inner tube assembly on the inner side of each of the outer peripheral nozzle outlets is uniformly provided with a plurality of through holes, the through holes for mixing the inner mixing chamber and the outer circumference of the inner ring Side connected.

9. The multi-tube multiple ejector according to claim 4, wherein: an axis of each of the peripheral nozzles and the corresponding peripheral small mixing tube is parallel to a central axis of the multi-tube multiple ejector; A central central mixing tube is threadedly coupled to the central bore of the outer tube collar.

10. The multi-tube multiple ejector according to claim 4, wherein: each of the peripheral nozzles coaxially corresponding to the outer peripheral small mixing tube is evenly distributed on the outer tube ring sleeve; the outer circumferences are small The center line of the mixing tube is inclined or intersected with the central axis of the composite cascade jet pump; the central hole of the outer tube sleeve is screwed or closely or fixedly connected with the central tube of the inner tube assembly.

11. The multi-tube multiple ejector according to claim 4, wherein: the pipe extending from the end of the outer pipe collar is an independent elongated pipe, and the elongated pipe is a total of the shrinking cone total mixing chamber. The output tube is mixed, and the end portion of the outer tube sleeve is provided with a thread or a flange connected to the end of the extension tube.

12. The multi-tube multiple ejector according to claim 1, wherein: a circular small mixing tube on a top wall annular surface of the large annular mixing tube has a chamfer on one side of the orifice, the chamfer is The semi-circular flared end of the orifice end is formed, and the longitudinal direction of each semicircular flare is substantially the same as the tangential direction of the annular centerline of the large annular mixing tube.

13. The multi-tube multiple ejector according to claim 1, wherein: the circular small mixing tubes are provided with a slanting slanting opening, or a slanting opening, on all or half of the spaced-apart end ports of the circular small mixing tube. The orientation is generally consistent with the tangential direction of the annular centerline of the large annular mixing tube.

14. The multi-tube multiple ejector according to claim 1, wherein: the circular small mixing tube inlet section is provided with a tapered conical opening, a tapered conical opening or a smooth straight-through circular small mixing a tube, or a short throat hole at the end of the tapered cone, the straight throat of the short throat is smoothly passed through the circular small mixing tube, and the length and diameter of the short throat hole are smaller than the diameter of the circular small mixing tube .

15. The multi-tube multiple ejector according to claim 9, wherein the relative position between the central mixing tube and the outer tube collar is adjusted, that is, 1/N of the rotational connection thread Integer multiple, N is the number of small peripheral mixing tubes, and the outer peripheral nozzles are still centered with the corresponding outer small mixing tube inlets, and then the central mixing tube and the outer tube ring sleeves are fixed to each other, so that the outer peripheral nozzle can be adjusted at the same time. The distance from the main nozzle to change the parameters and performance of the multi-tube multiple ejector.