WO2013029475A1

WO2013029475A1 - Composite jet mixer

Info

Publication number: WO2013029475A1
Application number: PCT/CN2012/080350
Authority: WO
Inventors: 韩铁夫
Original assignee: Han Tiefu
Priority date: 2011-08-31
Filing date: 2012-08-20
Publication date: 2013-03-07
Also published as: CN102954047A; CN102954047B

Abstract

A composite jet mixer comprises a central ejector, an outer ring ejector, and a total ejector. The central ejector is coaxially disposed in the outer ring ejector. Front portions of the central ejector and the outer ring ejector are concentrically fixed, and middle and rear portions of the central ejector are concentrically sleeved with middle and rear portions of the outer ring ejector. An output port of the outer ring ejector surrounds an output port of the central ejector. The central ejector and the outer ring ejector directly communicate with a total mixing chamber (14) and a total mixing pipe (6) of the total ejector. The composite jet mixer is light and has a small axial size.

Description

Composite jet mixer

[Technical Field]

This invention relates to a mixed flow injection device, and more particularly to a composite injection flow mixer for mixed fluid injection.

【Background technique】

The ejector mixer is a device that uses a higher pressure main 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 mixer has no moving parts, it is reliable and widely used in fluid equipment in many fields.

The existing typical ejector mixer consists of a main fluid inlet pipe, a nozzle, a secondary fluid inlet, a mixing chamber, a throat or a mixed diffuser. The secondary fluid flowing 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 mixing diffuser through mixed pressure equalization. Such an ejector generally has a central nozzle and a single elongated hybrid diffuser.

Patent No. ZL200920106414.7, a fixed multi-nozzle jet pump patent, discloses a ring-shaped jet pump, which is composed of a small jet that is provided in the outer annular sleeve and which is connected to the intermediate manifold, and each small jet is It consists of a nozzle, a throat, and a diffuser; it is installed under the well, using high-energy power fluid to illuminate the low-pressure formation fluid, and the mixed flow is lifted to the ground to achieve oil recovery. The device is actually a parallel jet pump that is output from a small jet to the intermediate manifold.

The single or multi-tube parallel jet pumps described above do not change the main structure of a single round tube for an ejector. The basic structure of such a single-tube ejector has not been changed. The advantage of the single-tube ejector is that the structure is simple and reliable, but it has the following drawbacks:

The existing ejector mixer 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, and the turbulent diffusion of the jet needs to have a development and reinforcement in the mixing tube. Process, therefore, the ejector must have an elongated mixing tube (or mixed diffuser), and the large-flow ejector requires a large-diameter mixing tube. The larger the diameter, the more the length of the mixing tube needs to be greatly increased, resulting in The disadvantage of the larger size and weight of the larger size ejector. This is for many fields that require small size and light load. In conclusion, its installation and use is very unfavorable. Although the use of multiple small jets in parallel can constitute a large jet pump, its function is mainly pumping, and its structure is also special, which is not suitable for the use of high-efficiency ejector mixers that require small size and light weight.

[Summary of the Invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a composite jet mixer having a small weight and axial dimension, a high pumping rate, and a high flow rate.

The general technical solution of the present invention is:

A composite jet mixer comprising a central ejector, an outer ring ejector, and a total ejector; the central ejector is coaxially disposed within the outer ring ejector, the front portions of which are concentrically fixed, both The middle and rear are concentrically nested; the outer ring ejector output is surrounded by the central ejector output spout, and is common to the total ejector's total mixing chamber and its total mixing tube; a common main fluid inlet tube and a total Mixing the output tubes and respectively located at the two ends of the composite jet mixer axis, and the secondary fluid inlet tube is disposed at the lateral position of the inlet end of the composite jet mixer;

The central ejector comprises a main fluid assembly and an inner tube assembly; a main fluid inlet tube is arranged in the center of the main fluid assembly, and an annular distribution sleeve is arranged at the bottom of the main fluid assembly; the inner cavity of the annular distribution sleeve is a central mixing chamber, and the annular distribution sleeve is on the peripheral wall. The main fluid porous passage is provided with a horizontal and vertical cross-isolation; the main fluid porous passage communicates with the main fluid inlet pipe, and the secondary fluid porous passage communicates with the central mixing chamber; the central mixing chamber has a central nozzle at the center of the top, and the central nozzle is directly connected to the main fluid inlet pipe. The nozzle of the central nozzle is directed toward the central mixing chamber to reduce the diameter outlet; the inner tube assembly is provided with a central through hole, the upper end of which is connected to the central mixing chamber, and the downwardly extending extending tube is a central mixing tube; the outer ring ejector is external The tube and the central ejector of the sleeve are formed together; the outer tube inlet end opening is sealed and fixed by the outer periphery of the central ejector; the outer tube inlet end expanding the oral wall and the middle tube with the contraction cone and the mainstream An annular mixing chamber and an annular mixing tube are formed between the body assembly and the inner tube, and the tapered annular reduced diameter outlet of the annular mixing chamber is smoothly passed through the annular mixing tube, and the annular nozzle is disposed at In the mixing chamber, the inlet of the annular nozzle communicates with the main fluid porous passage, the outlet of the annular nozzle faces and faces the conical annular constriction of the annular mixing chamber and the annular mixing tube therethrough; the secondary fluid inlet or the tube passes through the annular mixing chamber side The wall opens into the annular mixing chamber. Several technical solutions and structures of the present invention are:

The upper end of the inner tube assembly of the composite jet mixer is provided with a flared annular transverse wall, the lower convex outer ring of the annular transverse wall forms an annular nozzle seat, and the annular nozzle seat is provided with an annular nozzle, and the central hole wall of the inner tube assembly extends downward The reduced diameter inner tube is formed as a central mixing tube; the inlet of the central mixing tube is smoothly connected with the concentric conical outlet concentric of the central mixing chamber; the bottom of the annular distribution sleeve of the main fluid assembly and the upper end of the inner tube assembly are flared transverse wall and accessories The sealing connection forms a main fluid annular groove therebetween, and the main fluid annular groove communicates with the main fluid inlet pipe through the main fluid porous passage on the annular distribution sleeve, and the main fluid annular groove communicates downwardly with the inlet of the annular nozzle.

The top reaming cavity port of the outer pipe of the composite jet mixer is fixedly connected with the outer wall of the upper end of the inner pipe assembly, and the top hole of the upper end of the inner pipe assembly is sealed and fixed with the outer periphery of the lower part of the main fluid component; The first inlet of the plurality of secondary fluid passages uniformly distributed on the annular distribution sleeve is located around the main fluid inlet pipe outside the annular mixing chamber; the side wall of the annular mixing chamber is provided with a secondary fluid second inlet pipe or a plurality of inlet holes uniformly The secondary fluid first inlet and the second inlet pipe/hole may both enter the same secondary fluid or separately access the two fluids.

The annular distribution sleeve of the composite jet mixer and the inlet of the secondary fluid passage are located in the annular mixing chamber, and the central mixing chamber communicates with the annular mixing chamber via the secondary fluid passage on the annular distribution sleeve, and the secondary fluid inlet tube is annularly mixed. The side wall of the chamber opens into the annular mixing chamber.

A composite jet mixer, the main fluid assembly and the inner tube assembly of the central ejector are integrated, and the annular distribution sleeve and the secondary fluid passage inlet thereof are located in the annular mixing chamber, and the central mixing chamber is annularly distributed. The secondary fluid passage is connected to the annular mixing chamber, and the secondary fluid inlet pipe opens into the annular mixing chamber through the side wall of the annular mixing chamber; the annular nozzle is directly disposed on the peripheral wall of the annular distribution sleeve; the annular nozzle is porous by the main fluid of the annular distribution sleeve Each circular hole of the channel is directly formed, that is, a nozzle is processed or added at each circular hole outlet of the main fluid porous channel; the center line of each circular hole of the porous channel is parallel or oblique or intersects with the axis of the composite jet mixer.

The inner tube inner hole and the inner tube outer wall of the annular mixing pipe section of the composite jet mixer have a gradually decreasing inverted cone shape, and the annular mixing tube formed is an equal diameter section or a tapered diameter section; the axis of the annular nozzle The inverted cone annular center faces that are tapered along the annular mixing tube are tilted together toward the axis of the composite jet mixer.

The outlet end of the central mixing tube of the composite jet mixer is slightly longer in the axial direction than the outlet end of the annular mixing chamber, and the annular nozzle and the central nozzle are each provided with a chute/hole, and the chute of the annular nozzle and the central nozzle/ The holes are vertically inclined with respect to the axial direction of the composite jet mixer but do not intersect; the respective chutes/holes of the annular nozzle are inclined in the same direction and opposite to the oblique direction of the chute/hole of the central nozzle.

The side wall of the central mixing tube or the tapered inlet wall on the inner side of the annular nozzle outlet of the composite jet mixer is uniformly distributed with a through hole, so that the central mixing chamber or the central mixing tube communicates with the ring side of the annular mixing chamber.

The annular mixing tube is provided with a throat, the throat has a tapered inlet annular inlet bore, and has a minimum diameter in the axial direction of the annular mixing tube.

When the composite jet mixer is provided with only one main fluid inlet pipe, in order to improve the secondary fluids and to facilitate the ejector mixing, the main fluid inlet pipe axis and the composite jet mixer are disposed laterally of the annular mixing chamber. The axes may not intersect, or an annular porous flow sleeve may be provided between the main fluid inlet pipe and the annular mixing chamber cavity for uniformly distributing the secondary fluid entering from the inlet pipe to the annular nozzle.

The preferred embodiment of the nozzle structure of the present invention is:

The annular nozzle is a uniform circular hole provided on the annular nozzle seat, and each circular hole outlet is disposed at the center of the annular groove on the surface of the annular nozzle seat, and intersects the groove, and the annular groove has a V or U shape. The center of each circular hole is parallel or oblique or intersects with the axis of the composite jet mixer; or the radial wedge-shaped groove passing through the center of the nozzle is cut out at the exit of the circular hole to form an annular uniform eyelet orifice, There is an impact spray function between the oblique jets of the adjacent eyelet orifices;

The annular nozzle is a circular hole uniformly arranged on the annular nozzle seat, and the center or the misalignment of the circular hole on the inner and outer cymbals are evenly distributed or paired with each other, and the intersection of the pair of mutually intersecting intersections is located on the middle annular surface of the annular mixing tube. The centerline of each circular hole is parallel, oblique or intersects with the axis of the composite jet mixer.

The annular nozzle is composed of an annular slit or a flat annular uniform groove or a combination of the two; the annular slit is an annular slit concentric with the annular nozzle seat on the annular nozzle seat; the annular uniform flat groove is Ring Lines are parallel or diagonal.

When the main fluid is a liquid secondary fluid, the nozzle may be a spray nozzle. At this time, a filter may be disposed in front of the spray nozzle inlet, and the central nozzle or the annular nozzle is a swirling flow or an impinging flow capable of generating atomization. Membrane jet atomizing nozzle.

In use, a portion of the higher pressure main fluid (working fluid) of the main fluid inlet pipe is discharged into the central nozzle, and the secondary fluid entering from the last fluid porous passage of the annular distribution sleeve is introduced into the central mixing chamber, and then sprayed from the central mixing tube. The other part is sprayed into the annular mixing chamber from the annular nozzle through the main fluid porous passage on the annular distribution sleeve, and the secondary fluid flowing from the side wall of the annular mixing chamber to the annular mixing chamber through the main fluid inlet pipe/port is sucked. Entering the annular mixing tube for mixing output; the mixed fluid output from the central mixing tube is ignited to the mixed fluid output from the annular mixing tube, and enters through the total mixing chamber and its total mixing tube for 3 times of homogenization and pressure mixing and output.

The invention has the following advantages and benefits:

The primary fluid input by the present invention 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 or liquid or a liquid mist and a soot with low or no pressure. Compared with the existing single-tube ejector technology, the existing single-mixing tube ejector has a low injection rate and a mixed mixing efficiency of the mixing tube at a large diameter, and it is necessary to pass a long mixing tube to generate sufficient The turbulent flow fully mixes the primary and secondary flows. The present invention mixes the large-diameter single-tube mixing into the small-diameter inner tube and the outer ring tube, and then superimposes and mixes, and turns a single ejector into a central ejector and The outer ring ejector has two combined jet mixers with parallel output and common output tubes. After two times of series connection and one parallel connection of three times, the ejector rate and mixing efficiency can be greatly improved. Due to the difference between the cross-sectional diameter of the two mixing tubes inside and outside and the outlet mixing speed of the relatively small ring diameter, the mutual priming and secondary mixing functions are increased, which effectively solves the low efficiency of the existing ejector. The problem, as well as the inner and outer tube diameters can be small, the mixing tube length and size can be significantly reduced but the ejection efficiency and flow capacity are greatly increased. Due to the strong collision and vortex mixing of the two mixing tubes inside and outside, it is much better than the existing single-tube ejector to achieve the effect of the suction of the wall by the free diffusion of the central jet, which can greatly improve the secondary fluid. The volume ratio of the body ejector can also shorten the length of the mixing tube, especially in reducing the total length and weight of the ejector while improving its working efficiency and improving Value for money.

Since the central nozzle can be a plurality of swirling grooves with atomizing function, the annular nozzle can be a jetting hole having a swirling and atomizing function, and the swirling flow can be reversed, so that the primary and secondary fluids can be converged from each other. The initial mixing is more closely related, which can significantly improve the heat and mass transfer rate of the ejector. Furthermore, the use of the present invention can add or even alter the function of the ejector, thereby enabling the design of new process equipment to expand the range of applications. Thus, the present invention can effectively overcome the shortcomings of existing single-tube ejector. The axial size and weight are greatly reduced, the ability to pass and handle fluids is significantly enhanced, and the performance at high flow rates is good, making it suitable for composite jet mixers where large flow rates are required. It has the advantages and benefits of saving materials, size, and improving energy efficiency and application range.

[Description of the Drawings]

1 is a schematic structural view of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of Embodiment 2 of the present invention.

Figure 3 is a cross-sectional view taken along line D-D of Figure 2;

Figure 4 is a schematic view of the T direction of Figure 2.

Figure 5 is a cross-sectional view taken along line A-A of Figure 4;

Figure 6 is a schematic view of the C direction of Figure 4.

Figure 7 is a schematic view showing the structure of Embodiment 3 of the present invention.

Figure 8 is a cross-sectional view taken along line k-K of Figure 7.

Figure 9 is a schematic view of the P direction of Figure 8.

Figure 10 is a schematic structural view of Embodiment 4 of the present invention.

Fig. 11 is a view showing another structure of the annular nozzle shown in the direction of B in Fig. 10.

【detailed description】

Embodiment 1 See FIG. 1

The composite jet mixer of this embodiment uses a primary fluid, from the secondary fluid porous upper port 012, secondary flow The body porous side port 22 respectively introduces a secondary fluid, and a composite jet mixer that outputs a mixed fluid from the total mixed output pipe 6. The main fluid inlet pipe and the secondary fluid inlet pipe are respectively disposed at the center and side positions of the inlet end of the composite jet mixer or on both sides of the injection mixer axis, which are respectively connected to the central ejector and the outer ring ejector; the central ejector and the outer The front end of the ring ejector is concentrically fixed, and the rear part of the ring is concentrically nested; the outer ring ejector output port surrounds the central ejector output spout, and the common mixing chamber 14 of the total ejector is directly connected The total mixing pipe 6; a main fluid inlet pipe 1 and a total mixing output pipe 6 shared by the two are respectively located at the two ends of the composite jet mixer axis. Of course, the outer ring ejector and the central ejector may also be respectively set differently. The main fluid inlet pipe, so that the same or different types and pressures of the main fluid can be provided. For the present embodiment, the secondary fluid porous upper port 012 and the secondary fluid porous side port 22 are respectively set to respectively emit the secondary fluid. Therefore, it can be regarded as the first inlet of the secondary fluid and the second inlet, and the two can respectively pass into the same secondary fluid or respectively access the secondary fluids.

The central ejector is formed by the main fluid assembly 100 and the inner tube assembly 300; it includes a main fluid inlet tube 1, a central nozzle 2 formed by the central outlet of the main fluid inlet tube 1, and a central mixing of the concentric cores. The chamber 20 and its funnel taper 21 and central tube mixing tube 19. A main fluid inlet pipe 1 is arranged at the top of the main fluid assembly 100, and an annular distribution sleeve 3 is arranged at the bottom of the main fluid assembly 100. The circumferential wall of the annular distribution sleeve 3 is provided with a secondary and main fluid porous passage which are vertically and horizontally separated, and the inner cavity of the annular distribution sleeve constitutes a central portion. The mixing chamber 20; the outlet of the main fluid inlet pipe 1 is located at the center of the top of the central mixing chamber 20 and faces the outlet of the funnel taper 21 of the central mixing chamber 20 and the central mixing tube 19. The upper end of the inner tube assembly 300 is provided with a flared annular transverse wall, and the lower annular opening forms an annular nozzle seat 7. The bottom of the annular distribution sleeve 3 of the main fluid assembly is sealingly connected with the flared transverse wall and the attachment of the upper end of the inner tube assembly 300, and a main fluid annular groove is formed therebetween, and the main fluid annular groove passes through the main fluid porous passage on the annular distribution sleeve 3. It is in communication with the main fluid inlet pipe 1, and the secondary fluid passage on the peripheral wall of the annular distribution sleeve 3 allows the central mixing chamber to communicate with the secondary fluid inlet.

The outer ring ejector is formed by the outer tube assembly 400 and the outer periphery of the central ejector being nested; the end opening of the top reaming chamber top of the outer tube assembly 400 is sealed and fixed by the outer periphery of the upper portion of the central ejector; The annular expansion chamber 13 and the annular mixing tube 9 are formed between the inlet expansion chamber 013 of the tube assembly 400 and the middle tube and the inner tube with the constriction cone, and the conical annular reduction outlet of the annular mixing chamber 13 is smoothly passed through the annular mixing tube 9. Place The annular nozzle 7 is provided with an annular nozzle 5, the inlet of the annular nozzle 5 is connected to the main fluid annular groove, and the outlet of the annular nozzle 5 is located in the annular mixing chamber 13, and is oriented toward and facing the cone-shaped annular opening of the annular mixing chamber 13 and The straight annular mixing tube 9; the secondary fluid inlet or tube passes through the side wall of the annular mixing chamber 13 into the periphery of the annular nozzle 5 in the annular mixing chamber 9.

As shown in FIG. 1, the outer ring ejector is formed by an outer tube assembly 400 with a flared end and a coaxially disposed main fluid assembly 100 and an inner tube assembly 300; the outer tube assembly 400 is expanded at the top. The cavity inlet hole is externally fixed and sealed with the flared wall outer casing 15 at the top end of the inner tube assembly 300; the top hole of the upper end flared wall outer casing 15 of the inner tube assembly 300 and the annular distribution of the lower portion of the main fluid assembly 100 The large diameter outer ring of the sleeve 3 is sealed and fixed, and a main fluid annular groove 16 is formed therebetween; the main fluid annular groove 16 is upwardly connected to the porous main fluid passage 4 and the main fluid inlet pipe 1, and is passed downward to the annular nozzle 5; the annular nozzle 5 It is a circular hole uniformly distributed on the annular nozzle seat 7, and the center lines of each pair of circular holes 5.1 and 5.2 on the inner and outer turns are in pairs in the same radial plane and intersect each other, and the intersection is located at the middle ring of the inlet of the annular mixing tube 9. The surface of the circular hole on the inner and outer ridges can also be misaligned on different radial faces. The annular nozzle 5 is disposed in the annular mixing chamber 13 with its nozzle facing and conical annular outlet of the annular mixing chamber 13 and the annular throat 8, and a plurality of inlet holes 17 for communicating with the outside are uniformly distributed around the side wall of the annular mixing chamber 13. Or slots, they and each of the fluid heads 12 may all be in communication with the same fluid source. The channels of the porous main fluid passage 4 and the secondary fluid inlet 12 are uniformly spaced apart from each other in the annular distribution sleeve 3 integral with the main fluid inlet pipe 1; the central mixing tube tapered inlet wall on the inner side of the annular nozzle 5 outlet The through holes 10 are evenly distributed to allow the central mixing chamber 20 and the inner side of the tapered annular holes 18 to communicate with each other.

When the primary fluid is a liquid secondary fluid, the central nozzle 2 may be a spray nozzle, and the central nozzle 2 or the annular nozzle 5 is a swirling flow, an impinging flow (such as this example) or a membrane jet mist capable of generating atomization. The nozzle.

The inlet of the annular mixing tube 9 is provided with a section of annular throat 8, and the annular throat 8 has a tapered inlet guide bore 18 and has a minimum diameter in the axial direction of the annular mixing tube 9.

In use, a portion of the higher pressure main fluid (working fluid) of the main fluid inlet pipe 1 is discharged into the central nozzle 2, forming a central mixed flow with the secondary fluid drawn from the secondary fluid inlet 12; the other portion is passed from the main fluid inlet pipe 1 through the main flow. The main fluid of the annular groove 16 is sprayed from the annular nozzle 5 into the annular mixing chamber An annular hole 18, and sucking the secondary fluid entering the annular mixing chamber 13 from the secondary fluid inlet 17, and entering the annular mixing tube 9 for mixing output; the inner diameter of the inner tube assembly 300 is downwardly elongated It is configured as a central mixing tube 19; the converging tapered opening of the central mixing tube 19 is connected to the central mixing chamber 20 in a concentric manner. The secondary mixed fluid output from the central mixing tube 19 and the mixed fluid output from the annular mixing tube 9 are mutually ignited and joined together to enter the total mixing chamber 14 and its total mixing tube 6 for the third mixing and output; A plurality of secondary fluid inlets 12 uniformly distributed over the ejector annular distribution sleeve are located around the primary fluid inlet conduit 1 and outside the annular mixing chamber, and the secondary fluid inlet 17 can be used with the same secondary fluid source.

Embodiment 2 See Figure 2~6

The composite jet mixer of this embodiment is a composite jet mixer that uses a primary fluid to illuminate a secondary fluid and output a mixed fluid. A central ejector and an outer ring ejector are provided, the former being coaxially mounted within the latter, both having the same primary fluid inlet tube and a common total mixing output tube. The structure is substantially the same as the above example. The same part is no longer described, the differences are as follows:

In this embodiment, the inner tube is in the shape of a flat umbrella, and a funnel-shaped central hole is arranged therein, and extends downward into a central throat 37 and a slightly enlarged central mixing tube 36; as shown in FIG. 3, the central outlet of the main fluid inlet tube 27 A central nozzle 24 is disposed in the hole, and a lower portion of the main fluid inlet pipe 27 is expanded into an annular distribution sleeve 31. The vertical porous main fluid passage 04 and the transverse secondary fluid passage 012 are uniformly spaced apart from each other on the peripheral wall of the annular distribution sleeve 31; the annular distribution sleeve The central cavity of 31 constitutes a central mixing chamber 25; the central nozzle 24 is located at the center of the top of the central mixing chamber 25, the outlet of the central nozzle 24 is concentrically facing the tapered outlet of the central mixing chamber 25 and its communicating central throat 37 and central mixing tube 36. The central nozzle 24 is an outlet opening 28 in the central bottom of the main fluid inlet tube 27.

The large diameter ring of the upper end of the inner tube forms a concave convex nozzle ring 32, and the annular nozzle seat 32 is provided with an annular nozzle 33; the outer wall of the annular nozzle seat 32 is sealed with the inner hole of the annular fluid distribution sleeve 31 of the main fluid assembly. The main fluid annular groove 30 is closed between the top wall of the annular nozzle seat 32 and the bottom surface of the annular distribution sleeve 31, and the main fluid annular groove 30 passes through the vertical porous main fluid passage 04 and the main fluid on the annular distribution sleeve 31. The inlet pipe 27 is connected. As shown in FIGS. 4, 5 and 6, the outlet surface of the annular nozzle holder 32 is provided with an annular groove 44 having a V-shaped cross section, and the annular nozzle 33 is a circular hole 43 uniformly distributed on the annular groove 44. The outlet center of each circular hole 43 is located on the annular center line of the annular groove 44, and each round hole outlet Both intersect the annular groove to form a spout 45.

The top opening of the upper reaming cavity of the outer tube is sealed by the outer peripheral flange of the central ejector inlet tube and the two are fixedly connected, and an annular mixing chamber is formed between the upper expanded wall of the outer tube and the contraction cone tube of the outer tube and the outer periphery of the upper portion of the central ejector 23, the lower annular distribution sleeve 31 of the main fluid assembly and the annular nozzle seat sealed therewith are both located in the center of the annular mixing chamber 23. The tapered annular constriction 34 of the annular mixing chamber 23 is smoothly passed through the annular mixing tube 35. The annular mixing tube 35 is formed between the inner wall of the middle portion of the outer tube 41 and the outer wall of the outlet portion 36 of the inner tube, and the annular mixing tube 35 has an equal section or a taper. The inverted cone annular flow passage of the cross section; in this example, the annular mixing tube 35 can also be provided with an annular throat having a tapered inlet and an inlet annular orifice at the inlet of the annular mixing tube 35 as in the first embodiment.

The inlet end of the annular nozzle 33 communicates with the main fluid inlet pipe 27 via the main fluid annular groove 30, the vertical porous main fluid passage 04 on the peripheral wall of the annular distribution sleeve 31, and the outlet end of the annular nozzle 33 protrudes into the annular mixing chamber. Port 34, and facing the annular mixing tube 35.

The jet flow of the circular orifice nozzle with the V-shaped annular groove nozzle 45 can be diffused to both sides, and the diffusion direction is consistent with the annular direction of the annular mixing tube 35, and the jet flow which can be expanded on both sides can be caused in the annular mixing tube 35. The lateral movement of the main fluid facilitates the diffusion of the jet in the annular mixing tube 35, thereby increasing the suction piston function and also facilitating the mixing of the primary and secondary fluids in the annular mixing tube. The center line of each of the circular holes with the V-shaped nozzles may be inclined parallel to the axis of the annular mixing tube 35 or may be inclined at a small angle. The latter is more conducive to creating a lateral circulation within the mixing tube to enhance the suction and mixing functions.

A through hole 40 is uniformly distributed in the side wall of the central mixing pipe 36 on the inner side of the outlet of the annular nozzle 33, so that the central mixing pipe 36 communicates with the inner ring side of the annular mixing chamber 23, which can compensate for the suction neutral of the annular nozzle 33 composed of the injection holes. , is beneficial to balance and enhance the suction force of the primary fluid to the secondary fluid.

The outer side of the outer wall of the annular mixing chamber 23 is provided with a secondary fluid inlet pipe 22, and between the secondary fluid inlet pipe 22 and the outer periphery of the annular mixing chamber 23, a flow sleeve 29 is provided, and the current collecting sleeve 29 is an annular porous sleeve for The secondary fluid entering the secondary fluid inlet pipe 22 is evenly split to the periphery of the annular nozzle 33. The secondary fluid entering the upper portion of the annular mixing chamber 23 passes through the transverse secondary fluid passage 012 on the annular distribution sleeve 31 and is introduced into the central mixing chamber 25 to be ejected by the main fluid jet of the central nozzle 24, entering the central throat 37; entering the annular mixing chamber 23 The lower secondary fluid is injected by the main fluid jet of the annular nozzle 33, enters the annular mixing tube 35, and is centrally mixed. The outlet jet of the combined pipe 36 illuminates the outlet jet of the surrounding annular mixing tube 35, and enters the total mixing chamber 40 together. The funnel-shaped outlet of the total mixing chamber 40 smoothly passes straight into the straight tubular main throat 38, and is gradually expanded. The diameter of the diffuser tube 39 makes three mixed outputs.

Example 3 See Figures 7, 8, 9

The composite jet mixer of the present embodiment is also a composite jet mixer that uses a primary fluid to illuminate a secondary fluid and outputs a mixed fluid, which is coaxially arranged by a central ejector and an outer ring ejector. The two have a central main fluid inlet pipe and a common total mixing outlet pipe 53 with a common main fluid inlet pipe 42 disposed laterally on the side of the annular mixing chamber. This embodiment is basically the same as Embodiment 2, and the commonplace is not described again. The difference lies in:

In the present embodiment, the composite jet mixer has only one main fluid inlet pipe, and the annular mixing chamber 43 does not have a uniform annular distribution sleeve. In order to improve the uniform supply of the secondary fluid and to facilitate the priming, the main fluid inlet tube axis disposed laterally of the annular mixing chamber 43 may not perpendicularly intersect the axis of the composite jet mixer.

The annular mixing tube 45 of the present embodiment has an inverted cone-shaped short flow path that is inclined toward the axis of the composite injection mixer.

The external thread of the annular nozzle seat 49 is internally threadedly connected with the lower annular distribution sleeve 44 of the main fluid assembly, so that the upper end of the inner tube is expanded to form a concave annular main fluid annular groove between the top wall of the annular nozzle seat 49 and the bottom surface of the annular distribution sleeve 44. 46, and the inner tube upper end tapered center hole 54 and its straight central mixing tube 51 is positioned in the center of the central mixing chamber 55 at the center of the nozzle 56;

The annular nozzle housing jacket 48 upper screw hole is sealingly connected with the lower outer thread of the annular distribution sleeve 44, so that the lower nozzle sleeve of the annular nozzle seat housing 48 seals the outer conical surface of the annular nozzle holder 49. As shown in Fig. 8, a circular offset groove 47.1 is cut out from the outer conical surface of the annular nozzle seat 49, and the vertical deflection groove 47.1 is uniformly distributed in a radial direction of each outlet. The annular groove 47 is formed by the offset grooves 47.1. The vertical deviation groove 47.1 may be an oblique or straight groove of equal width, and the groove depth is preferably taken to be larger than the outlet opening degree to reduce the nozzle flow resistance and increase the spray speed. The annular nozzle 47 is in communication with the main fluid annular groove 46 at its inlet end, and has a tapered annular constriction and a short annular mixing tube 45 at its outer end facing the annular mixing chamber 43.

As shown in FIG. 9, the outer circular cone surface of the annular nozzle holder 49 of the present embodiment is uniformly distributed with a vertical deflection. The groove 47.2 forms a swirling annular nozzle 47. The central nozzle 56 is an intermittent annular tapered slit; the intermittent annular tapered slit is formed by an equal width chute 57 provided on the outer cylindrical surface of the central nozzle core cone and a bottom center hole of the main fluid inlet pipe With the cooperation, the vertical deflection groove 47.2 is opposite to the oblique direction of the central nozzle chute 57, and two outflows through the short annular mixing tube and the central mixing tube generate reverse friction in the total mixing chamber 50. The deflection causes the primary and secondary fluids to aggravate the mixed pressure transfer mass transfer, which can greatly improve the mixing efficiency and shorten the length of the ejector.

The outlet jet of the central mixing tube 51 illuminates the outlet jet of the surrounding annular mixing tube 45, and enters the total mixing chamber 50 together. The funnel-shaped outlet of the total mixing chamber 50 smoothly passes straight into the straight tubular main throat 52, and then gradually The expanded diameter expansion pipe 53 makes three mixed outputs.

Embodiment 4 See Figures 10 and 11:

The composite jet mixer of this embodiment is substantially the same as that of Embodiment 3, and the same points are not repeated here. The differences are described as follows: The main fluid component and the inner tube assembly of the central ejector are not as in the above examples. The split type is integrated, and its annular nozzle is disposed on the lower peripheral wall of the annular distribution sleeve of the main fluid assembly, and can be directly formed by the circular holes 401 of the main fluid porous passage, or in each circle of the main fluid porous passage. A nozzle is provided at the outlet of the hole 401; for example, a radial wedge groove 420 is cut out at the outlet of each round hole to form an annular uniform eyelet opening 321 , and a diagonal jet of the adjacent eyelet opening 321 is formed. Between the impact spray function;

The center line of each circular hole of the porous passage is parallel or oblique or intersects with the axis of the composite jet mixer;

The main fluid assembly and the inner tube assembly of the central ejector of the present embodiment are integrally connected. The top of the central mixing chamber is provided with a central nozzle 402 that is loaded from the main fluid inlet tube and has a plurality of straight or oblique jet orifices 403 thereon.

The inlets of the central mixing tube and the annular mixing tube of the present embodiment are respectively provided with a central throat 405 and an annular throat 404. The throat has a tapered inlet tapered bore and has a minimum diameter in the axial direction of the mixing tube. .

Claims

Rights request

What is claimed is: 1. A composite jet mixer comprising: a total ejector, a central ejector disposed centrally below a main fluid inlet in the total ejector, and an outer circulator disposed around the central ejector At least one main fluid inlet tube and a secondary fluid inlet tube; the outer ring ejector output port is disposed around the central ejector output port, and directly communicates with the total ejector of the total ejector and its total mixing tube The primary fluid inlet pipe and the secondary fluid inlet pipe are respectively disposed at the inlet end of the composite injection mixer.

2. A composite jet mixer as claimed in claim 1 wherein said composite jet mixer comprises a main fluid inlet pipe, said total ejector, outer ring ejector and said central ejector One of the main fluid inlet tubes is shared.

3. A composite jet mixer according to claim 2, wherein said jet mixer further comprises an annular distribution sleeve disposed at a lower end of said main fluid inlet tube, said annular distribution sleeve being provided with a mainstream The body branches to the main fluid porous passage of the outer ring ejector.

4. A composite jet mixer according to claim 3, wherein said annular distribution sleeve is further provided with a secondary fluid porous passage for diverting secondary fluid to a central mixing chamber of said central ejector, said The main fluid porous passage and the secondary fluid porous passage are respectively disposed on the peripheral wall of the annular distribution sleeve.

5. A composite jet mixer according to claim 4, wherein said central ejector comprises a main fluid assembly and an inner tube assembly; the top of the main fluid assembly is said main fluid inlet tube, and the lower portion thereof is The annular distribution sleeve, the inner cavity of the annular distribution sleeve is a central mixing chamber of the central ejector; the central mixing chamber has a central nozzle at the center of the top, and the central nozzle is directly connected to the main fluid inlet tube, and the nozzle of the central nozzle The inner tube assembly is provided with a central through hole, the upper end of which is connected to the central mixing chamber, and the downwardly extending extending tube is a central mixing tube.

6. A composite jet mixer according to claim 5, wherein said outer ring ejector is composed of an outer tube of said composite jet mixer and an outer circumference of a central ejector that is nested; The top opening of the oral cavity is sealed and fixed by the outer periphery of the central ejector; the outer tube is expanded into the oral wall and has a contraction cone An annular mixing chamber and an annular mixing tube are formed between the middle tube and the main fluid component and the inner tube, and the tapered annular reduced diameter outlet of the annular mixing chamber is smoothly straightened to the annular mixing tube; the upper end of the inner tube main member is provided with a flared annular transverse wall The lower annular ring mouth forms an annular nozzle seat, the annular nozzle seat is provided with an annular nozzle, the annular nozzle is disposed in the annular mixing chamber, and the inlet of the annular nozzle and the main fluid on the annular distribution sleeve are porous The passage is open, the outlet of the annular nozzle faces and faces the conical annular constriction of the annular mixing chamber and the annular mixing tube therethrough; the secondary fluid inlet or tube passes through the side wall of the annular mixing chamber into the annular mixing chamber.

7. A composite jet mixer according to claim 1, wherein the outlet section of the total mixing chamber has a conical shape of a conical shape, and the funnel-shaped outlet is smoothly connected to the inlet of the total mixed output tube. The mixed output pipe is a straight pipe or a straight pipe-shaped pipe and then directly passes through the diffuser pipe, and the diffuser pipe is a d and a sloped pipe which gradually expands the diameter in the axial direction.

8. A composite jet mixer according to claim 1 wherein said central ejector and said outer ring ejector are each provided with a different secondary fluid inlet tube.

9. A composite jet mixer comprising: a central ejector, an outer ring ejector, and a total ejector; the central ejector is coaxially disposed within the outer ring ejector, the front portions of which are concentrically fixed, The rear part of the two is concentrically nested; the outer ring ejector output is surrounded by the central ejector output spout, and is directly connected to the total ejector main mixing chamber and its total mixing tube; a common main fluid inlet tube and a total mixed output tube, respectively located at both ends of the composite jet mixer, the secondary fluid inlet tube is disposed at a side of the inflow section of the composite jet mixer;

The central ejector comprises a main fluid assembly and an inner tube assembly; a main fluid inlet tube is arranged in the center of the main fluid assembly, and an annular distribution sleeve is arranged at the bottom of the main fluid assembly; the inner cavity of the annular distribution sleeve is a central mixing chamber, and the annular distribution sleeve is on the peripheral wall. The cross-isolated secondary and main fluid porous passages; the main fluid porous passage communicates with the main fluid inlet pipe, and the secondary fluid porous passage communicates with the central mixing chamber; the central mixing chamber has a central nozzle at the center of the top, and the central nozzle passes straight through the main fluid inlet pipe, the center The nozzle of the nozzle is directed toward the central mixing chamber to reduce the diameter outlet; the inner tube assembly is provided with a central through hole, the upper end of which communicates with the central mixing chamber, and the downwardly extending extending tube is a central mixing tube;

The outer ring ejector is composed of an outer tube and a peripheral ejector of the sleeve; the outer tube inlet end opening is sealed and fixed by the outer periphery of the central ejector; the outer tube inlet end expands the oral wall and An annular mixing chamber and an annular mixing tube are formed between the middle tube with the shrink cone and the main fluid assembly and the inner tube, and the annular mixing chamber The tapered annular reduced diameter outlet smoothly passes through the annular mixing tube, the annular nozzle of the outer ring ejector is disposed in the annular mixing chamber, the inlet of the annular nozzle communicates with the main fluid porous passage, and the outlet of the annular nozzle faces and faces the cone of the annular mixing chamber An annular constriction and an annular mixing tube therethrough; the secondary fluid inlet or tube opens into the annular mixing chamber through the side wall of the annular mixing chamber.

10. A composite jet mixer according to claim 9, wherein the upper end of the inner tube assembly is provided with a flared annular transverse wall, and the lower convex outer ring of the annular transverse wall forms an annular nozzle seat, and the annular nozzle seat is provided The annular nozzle, the reduced diameter inner tube extending downward from the central hole wall of the inner tube assembly is formed as a central mixing tube; the inlet of the central mixing tube is smoothly connected with the concentric conical outlet concentric of the central mixing chamber; the ring of the main fluid assembly The bottom of the distribution sleeve is sealingly connected with the flaring transverse wall of the inner tube assembly and the accessory, and a main fluid annular groove is formed therebetween, and the main fluid annular groove is connected with the main fluid inlet pipe through the main fluid porous channel on the annular distribution sleeve, the mainstream The body annular groove communicates downwardly with the inlet of the annular nozzle.

11. A composite jet mixer according to claim 10, wherein the top reaming port of the outer tube is fixedly connected to the outer wall of the flared transverse wall of the inner tube assembly, and the top hole of the outer end of the inner tube assembly is flared. The outer circumference of the lower portion of the main fluid assembly is sealed and fixed; the first inlet of the plurality of secondary fluid passages uniformly distributed on the annular distribution sleeve is located around the main fluid inlet tube outside the annular mixing chamber; and the secondary fluid of the annular mixing chamber is provided with a secondary fluid The second inlet tube or a plurality of inlet holes are uniformly arranged; the secondary fluid first inlet and the second inlet tube/hole may both enter the same secondary fluid or respectively access the two fluids.

12. A composite jet mixer according to claim 10, wherein the annular distribution sleeve and the secondary fluid passage inlets thereof are located in the annular mixing chamber, and the central mixing chamber is mixed with the annular fluid passage through the secondary fluid passage on the annular distribution sleeve. The chamber is connected, and a secondary fluid inlet tube opens into the annular mixing chamber through the side wall of the annular mixing chamber.

13. A composite jet mixer according to claim 9, wherein the main fluid assembly and the inner tube assembly of the central ejector are integrated, and the annular distribution sleeve and the secondary fluid passage inlet thereon are both Located in the annular mixing chamber, the central mixing chamber communicates with the annular mixing chamber via the secondary fluid passage on the annular distribution sleeve, and a secondary fluid inlet tube opens into the annular mixing chamber through the side wall of the annular mixing chamber; the annular nozzle is directly disposed on the peripheral wall of the annular distribution sleeve The annular nozzle is directly formed by the circular holes of the main fluid porous passage of the annular distribution sleeve; or the nozzle is processed or added at the outlet of each circular hole of the main fluid porous passage; the center line of each circular hole of the porous passage Parallel or oblique or intersecting the axis of the composite jet mixer.

14. A composite jet mixer as claimed in claim 9 wherein the secondary fluid inlet tube axis disposed laterally of the annular mixing chamber is orthogonal or offset from the composite jet mixer axis and is in the secondary fluid inlet tube and ring. An annular porous current collecting sleeve is arranged between the mixing chambers.

15. A composite jet mixer according to claim 9, wherein the annular nozzle is formed on the annular nozzle seat to form a uniform circular hole; when the annular nozzle is a uniform circular hole, each circular outlet is Arranging at the center of the annular groove on the surface of the annular nozzle seat, and intersecting the groove, the annular groove has a V or U shape, and the center line of each circular hole is parallel or oblique or intersects with the axis of the composite jet mixer; Or a radial wedge-shaped W groove passing through the center of the orifice is cut out at the outlet of the circular hole to form an annular uniform eyelet orifice, and an oblique spray function is provided between the oblique jets of the adjacent orifice orifice;

When the annular nozzle is a two-way circular hole, the center line of the circular hole on the inner and outer rafts is crossed or misaligned in pairs, and the intersection of the pair of mutually intersecting intersections is located on the middle annular surface of the annular mixing tube; The line is parallel, oblique or intersecting with the axis of the composite jet mixer.

16. A composite jet mixer according to claim 9, wherein said annular nozzle is formed by an annular slit or a flat groove uniformly distributed or a combination of the two; said annular slit being on the annular nozzle seat An annular groove concentric with the annular nozzle seat; the annularly uniform flat grooves are radially distributed in cross section of the annular nozzle seat and are parallel or oblique to the axis of the composite jet mixer in the longitudinal direction.

17. A composite jet mixer according to claim 9, wherein said central mixing tube outlet end is slightly longer in the axial direction than the annular mixing chamber outlet end; said annular nozzle and central nozzle are each provided with a chute/hole The inclined grooves/holes of the annular nozzle and the central nozzle are inclined obliquely but not intersecting with the axial direction of the composite jet mixer; the inclined grooves/holes of the annular nozzle are inclined in the same direction and with the central nozzle The chute/hole is diagonally opposite.

18. A composite jet mixer as claimed in claim 9 wherein the outer tube inner bore and the inner tube outer wall of the annular mixing tube section each have a tapered conical shape; the annular nozzle axis is mixed along said annular shape The tapered inner surface of the inverted cone is gradually tilted toward the axis of the composite jet mixer.

19. A composite jet mixer as claimed in claim 9 wherein the annular mixing tube is provided with a throat The tube has a tapered inlet tapered bore and has a minimum diameter in the axial direction of the annular mixing tube.

20. A composite jet mixer according to claim 9, wherein a central mixing tube side wall or a tapered inlet wall on the inner side of the annular nozzle outlet is uniformly provided with a through hole for mixing the central mixing chamber or the central mixing tube with the ring The indoor ring side is connected.