CN102678635B - Primary-secondary ejector - Google Patents
Primary-secondary ejector Download PDFInfo
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- CN102678635B CN102678635B CN201110255518.6A CN201110255518A CN102678635B CN 102678635 B CN102678635 B CN 102678635B CN 201110255518 A CN201110255518 A CN 201110255518A CN 102678635 B CN102678635 B CN 102678635B
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Abstract
The invention provides a primary-secondary ejector and relates to a fluid mixing element for fluids. A central ejector of the primary-secondary ejector is coaxially arranged in an annular ejector; outlets of the central ejector and the annular ejector are communicated with a main mixing chamber and a main mixing tube; one part of a main fluid is ejected from the top of the central ejector to an inlet of a central mixing tube through a central nozzle, is utilized to inject a secondary fluid entering into a central mixing chamber from an inlet in a side position on the upper part of the annular ejector into the central mixing tube and is mixed with the secondary fluid; the other part of the main fluid is ejected from the top of the annular ejector to the inlet of an annular mixing tube through an annular nozzle, is utilized to inject the secondary fluid entering into an annular mixing chamber from the inlet in the side position on the upper part of the annular ejector into the annular mixing tube and is mixed with the secondary fluid; and an ejected fluid at the outlet of the central mixing tube in the main mixing chamber is utilized to inject the surrounding ejected fluid at the outlet of the annular mixing tube into the main mixing tube and is mixed for the third time, thereby finishing the mixed fluid conveying in a way that the high-pressure main fluid pumps the low-pressure secondary fluid. The primary-secondary ejector is short in axial size and high in pumping and ejecting efficiency.
Description
Technical field
The present invention relates to a kind of mixed flow element of two-fluid, relate in particular to a kind of primary and secondary ejector.
Background technique
Two-fluid ejector is with the inferior fluid of higher pressure main fluid injection low pressure (or with no pressure), completes main fluid suction time fluid and joins the device that is mixed and presses mixed flow to carry.It is simple and reliable, for multiple fluid equipment.Now is made up of main fluid entrance, nozzle, inferior fluid input, mixing chamber, trunnion or mixing diffuser pipe typical Venturi transmission ejector.The inferior fluid that passes into mixing chamber is pumped into mixing tube by the jet of main fluid nozzle, and primary and secondary fluid is exported through mixing all to press from mix diffuser pipe.This ejector is established central nozzle, and single elongated mixing diffusion pipe.Existing single tube ejector adopts and does not change yet so far the agent structure that uses a single circle jet pipe.The advantage of this single tube structure is simple, working stability is reliable, but there is following shortcoming: existing injection ejector is the turbulent diffusion in mixing pipe range stroke by jet mainly, make main fluid and time mutual blending of fluid, the turbulent fluctuation diffusion of jet need to have a process that produces development and strengthen in mixing tube, thereby ejector all must will have elongated mixing tube (or mixing diffuser pipe), and large flow ejector needs heavy caliber mixing tube, the larger length that just more needs greatly to increase mixing tube of bore, thereby cause larger specification ejector axial dimension and the excessive shortcoming of weight, this is concerning the large flow small volume of needs and underloaded large occasion, it is very unfavorable that Qi An Installed uses.
The patent No. is the fixed multi-nozzle jet pump patent of ZL200920106414.7, a kind of annular jet oil extraction pump is disclosed, it forms by the little liquid jetting device that a circle all passes into intermediate manifold is set in ring sleeve outside, and each little liquid jetting device is made up of a nozzle, a trunnion, a diffusing tube; It is contained in down-hole, uses high-energy power liquid injection low-pressure stratum liquid, and mixed flow gives rise to ground and reaches oil recovery object.This device is actual is a Jet injector being composed in parallel by the little single tube liquid jetting device of a circle.Although adopt multiple little liquid jetting device parallel connections can form large stream pump, their function is mainly that underground mining oil pump is defeated, its structure is also comparatively complicated and special, and therefore as wanting, cube is little and lightweight large flow ejector use is very not applicable.
Summary of the invention
It is oversize that the present invention is intended to overcome the axial dimension of above-mentioned single tube Venturi transmission ejector, volleys the shortcoming that rate is low; When a kind of large flow is provided, performance is good, the primary and secondary ejector that length is short, lightweight, induction efficiency is high.
Technological scheme of the present invention is: primary and secondary ejector, and its central ejector is arranged in annular ejector coaxially, common total mixing chamber and the total mixing tube of being communicated with of both outlets; A part for main fluid is sprayed to central mixing tube inlet from central ejector top by central nozzle, and the inferior fluid that injection enters central mixing chamber from annular ejector upper side position entrance enters together in central mixing pipe and mixes; Another part of main fluid sprays to annular mixing tube entrance from annular ejector top by ring nozzle, and the inferior fluid that injection enters annular mixing chamber from annular ejector upper side position entrance enters together in annular mixing tube and mixes; The outlet jet flow of central mixing pipe annular mixing tube outlet jet flow around injection in total mixing chamber enters total mixing tube jointly mixes for the third time, and the mixed flow that completes high pressure main fluid draws low pressure time fluid is carried.
In the enforcement structure of recommending: described central ejector input end is coaxially fixed in described annular ejector input end extension diameter section entrance, in described central ejector, back segment is coaxially suspended in described annular ejector; Described central ejector output terminal spout is enclosed in described annular ejector output terminal central authorities, and they lead directly to described total mixing chamber and described total mixing tube jointly;
Described central ejector comprises central nozzle and the stair-stepping inner tube of coaxial package; This central nozzle is located at the entrance of this inner tube middle part hole enlargement inner chamber, and this hole enlargement inner chamber forms described central mixing chamber, uniform fluid input of described central mixing chamber sidewall; The described central mixing pipe that this inner tube back segment is path; Described central nozzle outlet aligns contraction conical outlet and the described central mixing pipe of described central mixing chamber, and the contraction conical outlet of described central mixing chamber and described central mixing pipe are smoothly straight-through;
Described annular ejector is made up of described inner tube, connecting sleeve and the stepped outer tube of coaxial package; This outer tube front end extension diameter section entrance is connected with this connecting sleeve is concentric, and the endoporus fixed seal connection of described inner tube and this connecting sleeve makes described inner tube coaxially be suspended at this outer tube central authorities; Annular chamber between this outer tube front end extension diameter section endoporus and this connecting sleeve outer wall and described inner tube middle part outer wall forms described annular mixing chamber; Between this connecting sleeve and described inner tube, be positioned at the part looping nozzle carrier of described annular mixing chamber apical ring wall, on this ring nozzle seat, the hole of lopping or groove or seam or its constitute described ring nozzle; Annular chamber between next section of endoporus of this outer tube front end extension diameter section and described inner tube rear portion outer wall forms described annular mixing tube; The described annular mixing tube that the outlet of described ring nozzle is just being shunk conical ring outlet and smoothly led directly to this conical ring outlet described annular mixing chamber;
The main fluid entrance of being located at described central ejector center of top is communicated with respectively described central nozzle and described ring nozzle; The inferior fluid input of described annular ejector is located on the outer side wall of described annular mixing chamber, the inferior fluid input of described central mixing chamber be distributed on the perisporium of described central mixing chamber and by described annular mixing chamber around;
Outer axial tube be upwards longer than inner tube go out end in, back segment forms described total mixing chamber with convergent footpath and described total mixing tube of straight length in turn.
This by central nozzle, stair-stepping inner tube, connecting sleeve and stepped outer tube segmentation composite construction central authorities ejector, annular ejector and the structure of always mixing output tube, be easy to processing and assembling.
On above-mentioned total technological scheme basis, a kind of primary and secondary ejector: the described main fluid entrance that described inner tube enters end encloses step hole enlargement round platform outward, around the secondary round platform of this step hole enlargement round platform, radial equipartition is communicated with the main fluid intercommunicating pore of described main fluid entrance, this step hole enlargement round platform is vertical uniform fluid through-hole around, the isolation that misplaces mutually of this fluid through-hole and this main fluid through hole; This large footpath of step hole enlargement round platform section is sealed to be fixed in described connecting sleeve, both common described ring nozzle seat and described ring nozzles of forming, and described connecting sleeve sealing is fixed in the front end extension diameter section inlet opening of described outer tube; The straight-through described central nozzle of described main fluid entrance is also communicated with described ring nozzle through this main fluid intercommunicating pore; Described inferior fluid input has two kinds, a kind of being located on described annular mixing chamber's sidewall and around described central mixing chamber sidewall, and both interconnect; Another kind of enter this step hole enlargement round platform of end through hole of vertical uniform and straight-through described annular mixing chamber roof around for described inner tube.
On above-mentioned total technological scheme basis, another primary and secondary ejector: the described straight-through described central nozzle of main fluid entrance and described ring nozzle; Described outer tube front end extension diameter section entrance is fixedly connected with or is threaded with basin shape connecting sleeve outer wall is concentric, and this basin shape connects and extracts end periphery diapire as described ring nozzle seat, establishes described ring nozzle on it; Described ring nozzle is suspended from described annular mixing chamber and just to described annular mixing chamber's outlet and described annular mixing tube; The center hole of this basin shape connecting sleeve and described inner tube enter to hold that cylindrical is concentric is tightly connected, or the center hole of this basin shape connecting sleeve directly extends described inner tube downwards, and this basin shape connecting sleeve and described inner tube are integrated part; Described inner tube enters end and establishes described central nozzle.
On above-mentioned total technological scheme basis, another primary and secondary ejector: described inner tube is the ladder pipe of the large footpath of front end band cup-shaped recess, wherein the endoporus of large footpath cup-shaped recess is described main fluid entrance, the cylindrical of large footpath cup-shaped recess is threaded in described connecting sleeve, described connecting sleeve front end periphery and described outer tube front end extension diameter section entrance are fixed, the rear portion of described connecting sleeve inverted cone is suspended in the described annular mixing chamber of the anterior extension diameter section endoporus formation of described outer tube, described connecting sleeve lower end center hole and described inner tube stage casing close joining of cylindrical; A uniform circle main fluid passageway hole on cross wall at the bottom of the cup-shaped recess of the large footpath of described inner tube, described main fluid passageway hole makes described main fluid entrance be communicated with the annular chamber of described connecting sleeve diapire closed front; Each spray orifice of described ring nozzle is distributed on described connecting sleeve annular bottom wall, or described ring nozzle is located at and is sandwiched between described inner tube stage casing cylindrical and described connecting sleeve independently on ring nozzle seat; On described annular mixing chamber's sidewall, establish described inferior fluid input.
The described annular mixing tube of primary and secondary ejector is have uniform section runner or convergent cross section runner and be to going out to hold the inverted-cone annular mixing tube of undergauge gradually on axially.The injection of the jet that this structure is conducive to the output of center mixing tube to annular mixing tube output jet, and annular mixing tube self goes out hitting mutually and mixing of stream.
The described ring nozzle of primary and secondary ejector is the narrow annular channel on ring nozzle seat; The structure of this ring nozzle is the simplest, is easy to most realize.Or described ring nozzle is many uniform straight trough/skewed slots that are ring configuration around ring nozzle seat; This ring nozzle has the function of eddy flow, is beneficial to and improves primary and secondary fluid in the mixed efficiency of annular mixing tube internal reference.Or described ring nozzle is on ring nozzle seat, to be multiple straight circular hole/tiltedly circular hole that circle distributes, the outlet of above-mentioned each circular hole is passed through mutually with the annular recess on described ring nozzle seat, this annular recess is located at this ring nozzle seat and is gone out on end face, and has V-arrangement or channel section.Because ring nozzle has V-arrangement or U-shaped circular groove spout, the jet flow of ring nozzle can cause the transverse shifting of main fluid in annular mixing tube, is conducive to the diffusion of jet flow in annular mixing tube and is full of, thereby increase suction piston action, improves wall attachment effect; Make to mix more even closely from the initial just ginseng of confluxing between primary and secondary fluid, can significantly improve the mixed intensity of ginseng and heat and mass speed.
In the time that main fluid is used liquid, described ring nozzle adopts annular spraying nozzle; Described ring nozzle adopts annular spraying nozzle; The structure of this annular spraying nozzle is uniform multiple the shape holes that are arranged on described ring nozzle seat of lopping, and each shape hole is made up of a spray orifice and a groove, and this groove is the radial wedge groove of this orifice center of mistake of cutting out in the outlet of this spray orifice; Or the structure of this annular spraying nozzle is the uniform multiple spraying nozzles with swirling flow atomizing core that are arranged on described ring nozzle seat of lopping; Or the structure of this annular spraying nozzle is that lopping is arranged on the multipair spray orifice with the collision jet that crosses one another on described ring nozzle seat.Ring nozzle adopts the annular spraying nozzle with atomizing functions, can make to be initially just mixed to get from confluxing between primary and secondary fluid more even close, therefore can significantly improve the heat and mass speed of primary and secondary ejector of the present invention, and increase the specific functions such as dedusting, flash evaporation, rapid condensation.
The annular mixing tube of the described annular ejector of primary and secondary ejector is provided with one section of annular trunnion, this annular trunnion has minimum transverse section latus rectum in described annular mixing tube runner whole process, the conical ring undergauge that this annular trunnion is located at described annular mixing chamber goes out end, the straight-through annular mixing tube that expands gradually axial latus rectum of this annular trunnion.Use trunnion can make the jet energy bunchy of annular ejector output disperse or atomization, it can make main flow physical efficiency adhere to, carry more time fluid, thereby aobvious chopsticks shortens primary and secondary ejector length and increases the specific functions such as dedusting, flash evaporation, rapid condensation.
The described central mixing pipe stage casing of the described central ejector of primary and secondary ejector is established concentric inner cavity and is formed resonant cavity, > central mixing tube inlet aperture, > central mixing pipe outlet aperture, resonant cavity aperture, this resonance lumen pore axial length is adjustable.Resonant cavity can make the resonant pulses of the fluid-mixing generation certain frequency in central mixing pipe under proper condition, can, to the raw resonant feedback of the mixed defeated miscarriage of upstream and downstream both direction and stack, cause the beneficial effect of the mixing capacity that strengthens whole primary and secondary ejector.
Primary and secondary ejector can in establish axial displacement mechanism: between described central ejector and described annular ejector, be provided with and change spiral, the pad class controlling mechanism of relative axial position each other, or be provided with and change spiral, the pad class controlling mechanism of relative axial position each other between described central ejector and described ring nozzle and the outer tube of described annular ejector; To change nozzle distance or nozzle distance and the annular mixing tube cross section of fluid channel of total ejector and annular ejector, to obtain the ejector structure parameter that adaptation condition is good.
The main fluid of primary and secondary ejector of the present invention input can be gas, liquid or the gas-liquid mixed flow body of elevated pressures, and inferior fluid can be the heterogeneous fluid-mixings such as pressure lower or stress-free gas, liquid or gas-liquid mist and flue dust.Primary and secondary ejector of the present invention mixes long tradition single tube venturi injection, turns to the short structure of central two-stage injection and circumferential annular injection output in parallel.Keeping certain larynx face than in situation, the annular mixing tube runner latus rectum of inner and outer pipe dress all diminishes relatively, this can be full of the primary fluid jetstream of central mixing pipe and annular mixing tube to reach attached wall pumping action sooner, thereby than having larger piston suction capactity with the single tube ejector of flow, this can improve injection ratio.
Due to differences such as the speed of the outlet mixed flow of two mixing tubes, pressure, mixed degree, while making them enter total mixing chamber, total mixing tube, increase that both collide with each other, whirlpool mixes secondary mixed function; Hole or the groove due to outer shroud nozzle with peripheral, oblique can tiltedly spray eddy flow, and have the spout of V-arrangement, channel section groove, can cause the transverse shifting of main fluid in annular mixing tube; In addition can adopt atomized spray aspiration drainage; These all can make between primary and secondary fluid more even closely mixed from the initial just ginseng of confluxing, and can significantly improve the mixed intensity of ginseng and the heat and mass speed of primary and secondary ejector.
Compared with traditional single tube ejector, primary and secondary ejector of the present invention by and to process fluid capacity stronger, large flow performance in man-hour is good, and axial dimension and weight greatly reduce and injection and mixing efficiency increase.Have the advantages that to save material, save space saving energy and work efficiency.
Primary and secondary ejector of the present invention as required can be with a kind of main fluid injection a kind of or two kinds fluids export a kind of mixed flow, be suitable in large flow place if source, environmental protection or suction mixed flow element is made in the conditional traffic tool of dimensional weight place use.
Brief description of the drawings
Fig. 1 is first embodiment's of primary and secondary ejector of the present invention structural representation.
Fig. 2 be in Fig. 1 A to the structural representation of ring nozzle.
Fig. 3 be in Fig. 1 A to the structural representation of another kind of ring nozzle.
Fig. 4 be ring nozzle in Fig. 3 T to structural representation.
Fig. 5 is second embodiment's of primary and secondary ejector of the present invention structural representation.
Fig. 6 be ring nozzle in Fig. 5 G to structural representation.
Fig. 7 be ring nozzle in Fig. 5 G to another kind of structural representation.
Fig. 8 is the 3rd embodiment's of primary and secondary ejector of the present invention structural representation.
Embodiment
One, embodiment one
First embodiment's of primary and secondary ejector of the present invention structure, as shown in Figure 1, upper in Fig. 1 is actual front, lower is actual rear.This primary and secondary ejector is made up of short and small inner tube 1, central nozzle 2, connecting sleeve 3, thick long outer tube 4 and ring nozzle 7.Inner tube 1 and central nozzle 2 form central ejector, and inner tube 1, outer tube 4, connecting sleeve 3 and ring nozzle 7 form annular ejector.Central authorities' ejector input end is coaxially fixed in annular ejector input end extension diameter section 41 entrances, and central ejector posterior segment is coaxially suspended in annular ejector.Axially, be longer than in the outer tube 4 that inner tube 1 goes out end, back segment forms total output tube that mixes, total entrance inner chamber that mixes output tube is total mixing chamber 45, and the convergent footpath tube chamber smooth excessiveness that total mixing chamber 45 exports is total mixing tube 51 in straight tube chamber and the diffuser pipe 52 of flaring footpath tube chamber.Central authorities' ejector output terminal spout is enclosed in annular ejector output terminal central authorities, they jointly straight-through total mixing chamber 45, total mixing tube 51 and.Diffuser pipe 52
Inner tube 1 is stepped shaft pipe, main fluid entrance 11 is established in entering in end of it, the outer step hole enlargement round platform that encloses of main fluid entrance 11, the front portion of this step hole enlargement round platform is the evagination round platform of flanged pin 17, the contraction tapering that shrink backward gradually at middle part and the rear portion of intermediate diameters form secondary round platform, and step hole enlargement round platform is the straight pipe of minor diameter later.On the evagination round platform front-end face of inner tube 1, output annular groove 19, the bottom surface of the annular groove 19 uniform multiple vertical 15 straight-through step hole enlargement round platforms of fluid through-hole for the first time in bottom; Uniform multiple connection main fluid entrance 11 and shrink the radially main fluid through hole 16 of tapering outer circumferential face also on the step hole enlargement round platform of inner tube 1.Respectively fluid through-hole 15 is isolated mutually interconnected with each main fluid through hole 16 for the first time.
Central nozzle 2 is arranged on main fluid entrance 11 and goes out end central authorities.Inner tube 1 hole enlargement chamber around central nozzle 2 outlets becomes central mixing chamber 12, uniform multiple fluid inputs for the first time 14 on 12 sidewalls of central mixing chamber, and the narrow tube portion that inner tube 1 rear portion of cone outlet connection is shunk in central mixing chamber 12 becomes central mixing pipe 13.The outlet 21 of central nozzle 2 is just shunk cone outlet and central mixing pipe 13 to central mixing chamber 12, the outlet 21 of central nozzle 2 is shunk conical outlet with central mixing chamber 12 and is spaced a distance, and central nozzle 2 exports the area that 21 area is less than central mixing pipe 13 transverse section.
Connecting sleeve 3 sealings are fixed in the front end extension diameter section inlet opening 41 of outer tube 4.Flange 17 sealings of the large footpath of the anterior step hole enlargement of inner tube 1 round platform section evagination round platform are fixed on connecting sleeve 3 front end endoporus middle parts.The narrow tube portion of inner tube 1 is inserted in the narrow tube portion of outer tube 4, and above-mentioned central ejector is sleeved on outer tube 4 from front portion coaxially.Between the hole enlargement hole of inner tube 1 and outer tube 4, form the annular mixing chamber 43 with contractile ring conical outlet, each on inner tube 1 step hole enlargement round platform for the first time fluid through-hole 15 is communicated with annular mixing chamber's 43 roofs from inner side.Uniform multiple fluid inputs for the second time 42 on outer tube 4 front end expansion tube sidewalls, fluid input 42 is communicated with annular mixing chamber 43 from outside for the second time; On 12 sidewalls of central mixing chamber, fluid input 14 communicates with annular mixing chamber 43 for the first time.Between the outer wall that inwardly shrink at inner tube 1 narrow tube portion rear portion and the narrow tube portion inwall of outer tube 4, form inverted-cone annular mixing tube 44.Annular mixing tube 44 has the runner in uniform section or convergent cross section.
The connecting part of the step hole enlargement round platform of inner tube 1 and connecting sleeve 3 endoporus forms a ring nozzle seat that has annular pass 6.Annular pass 6 is communicated with main fluid entrance 11 through each main fluid intercommunicating pore 16 of inner tube 1 step hole enlargement round platform.On ring nozzle seat, establish ring nozzle 7.Referring to Fig. 2, ring nozzle 7 is the circle narrow annular channel between the step hole enlargement round platform bottom 18 of inner tube 1 and connecting sleeve 3 endoporus lower wall 31.Or referring to Fig. 3 and Fig. 4, ring nozzle 7-1 also can be circle skewed slot 71 or a straight trough uniform at inner tube 1 18-1 place, step hole enlargement round platform bottom.The outlet of ring nozzle 7 (7-1) is just to annular mixing chamber's 43 contractile ring cone outlets and inverted-cone annular mixing tube 44.
Part and expansion tube 5 that outer tube 4 is positioned at after annular mixing tube 44 outlets form total output tube that mixes.Total inner chamber that mixes the anterior tapered cone of output tube forms total mixing chamber 45.The inner chamber that total mixing chamber 45 goes out the prolonged section straight tube of end forms total mixing tube 51, and the inner chamber of the expansion tube at straight tube rear portion is total diffuser pipe 52.
Between the front port 41 of connecting sleeve 3 and outer tube 4, be provided with and change each other spiral, the pad class controlling mechanism of relative axial position and do to move and be connected, in order to regulate the nozzle distance between ring nozzle 7 and the contraction cone mouth of annular mixing chamber 44 on annular ejector, and change the runner latus rectum of annular mixing tube 44, with the ejector optiaml characteristics parameter of seeking and regulating adaptation condition to change.
Before use, first each fluid input 15,42 is communicated with to same fluid source, with primary fluid source connection main fluid entrance 11.Primary fluid source pressure is higher, and inferior fluid source pressure is lower or with no pressure.They can be liquid or gas or gas or liquid aerosol; Inferior fluid also can be gas-liquid-solid mist.According to feature and the fluid phase state of main fluid injection time fluid, can be with the inferior fluid of gas or gas main fluid injection liquid, or with the main fluid ejection gas of liquid or the inferior fluid of gas or gas-solid mixture, or with the inferior fluid of the main fluid injection liquid of liquid, or with the inferior fluid of the main fluid injection gas-solid mixture of gas or gas-liquid mixture, or with main fluid ejection gas or the inferior fluid of gas-solid mixture etc. of gas-liquid mixture.
From the main fluid of main fluid entrance 11, a part is by central nozzle 2, spray working fluid through central mixing chamber 12 to central mixing pipe 13, entrainment simultaneously from each for the first time fluid through-hole 15 and annular mixing chamber's 43 surroundings for the second time fluid input 42 enter the inferior fluid of central mixing chamber 12 through fluid input 14 for the first time; The inferior fluid that passes into central mixing chamber 12 on central ejector is pumped into the central mixing pipe 13 on central ejector through the central nozzle 2 on central ejector and the periphery that shrinks cone outlet by main fluid, make both at the interior contact heat transfer of central mixing pipe 13, mass transfer, average rate, all press, then central mixing pipe 13 ends from central ejector are exported the first fluid-mixing.
From another part of the main fluid of main fluid entrance 11 through each intercommunicating pore 16, by ring nozzle 7, spray working fluid to annular mixing tube 44 entrances of annular ejector at a high speed, entrainment simultaneously from fluid input for the second time 42 and each for the first time fluid through-hole 15 enter annular mixing chamber 43 by injection time fluid, inferior fluid that passes into annular mixing chamber 43 is pumped into the annular mixing tube 44 of inverted-cone of annular ejector by main fluid through ring nozzle 7 and the periphery of contractile ring cone outlet.Make both at the interior contact heat transfer of annular mixing tube 44, mass transfer, average rate, all press, then export the second fluid-mixing from annular mixing tube 44 ends.
The second fluid-mixing jet flow of exporting from annular mixing tube 44 ends from the first fluid-mixing jet injection of central ejector central mixing pipe 13 end outputs, jointly enter in total mixing chamber 45, total mixing tube 51 and total diffuser pipe 52 and carry out mixing for the third time, finally complete high pressure main fluid draws low pressure time fluid and carry out mixed flow conveying.
The present embodiment can have several functions as required: explained orally a kind of main fluid injection same time fluid above and exported a kind of mixed flow.Can also by each for the first time fluid through-hole 15 be communicated with fluid source a kind of time, by each for the second time fluid input 42 be communicated with another kind of time fluid source; With two kinds of different inferior fluids of a kind of main fluid injection, export a kind of mixed flow.These features make its use wider, are particularly suitable in large flow place if source, environmental protection or suction mixed flow element is made in the conditional traffic tool of dimensional weight place use.
Two, embodiment two
Second embodiment's of primary and secondary ejector of the present invention structure, as shown in Figure 5.Upper in Fig. 5 is actual front, and lower is actual rear.This primary and secondary ejector is made up of short and little inner tube 10, central nozzle 20, connecting sleeve 30, thick and long outer tube 40.Inner tube 10 and central nozzle 20 form central ejector.Inner tube 10, connecting sleeve 30, outer tube 40 form annular ejector.Central authorities' ejector is arranged in annular ejector coaxially, common total mixing chamber 450 and the total mixing tube 460 of being communicated with of the outlet of central ejector and annular ejector.
The front portion of inner tube 10 is directly round central holes of major diameter, and middle part is by the straight circular hole portion of diameter maximum and the hole enlargement hole section that forms to aftershrinkage tapering, and hole enlargement hole section is the straight circular hole of minor diameter later.The straight round central hole of inner tube 10 front portions is established internal thread, uniform multiple circular holes 140 on the sidewall of the inner tube 10 straight circular hole portions in middle part.Central nozzle 20 is located in the central hole at inner tube 10 tops, and the outlet of central nozzle 20 is stretched in the central mixing chamber 120 of central ejector of the hole enlargement hole section formation at inner tube 10 middle parts.The fluid input for the first time that 120 sidewalls uniform multiple circular holes 140 in central mixing chamber are central ejector.The straight circular hole of minor diameter at 120 contraction cone outlet connection inner tube rear portions, central mixing chamber becomes the central mixing pipe 130 of central ejector.The outlet 210 of central nozzle 20 is just to leaving the outlet of contraction cone and the central mixing pipe 130 of central mixing chamber 120.
The apical pore of connecting sleeve 30 is main fluid entrance 110; Suit the inner tube 10 top cylindricals that are sealedly connected and fixed with one heart in the bottom centre hole of connecting sleeve 30.The front end of outer tube 40 is by the larger straight pipe of diameter with the extension diameter section that form of contraction tapering shrinking gradually backward, and half inwardly contraction gradually backward before the narrow tube portion at rear portion is later halfly truncated into straight pipe.Uniform multiple fluid inputs for the second time 420 on the straight pipe sidewall of outer tube 40 front end extension diameter sections.Outer tube 40 front end extension diameter section entrances are fixedly connected with or are threaded with connecting sleeve 30 outer walls are concentric, the connecting sleeve 30 that inner tube 10 and front end thereof are connected seals and is fixedly connected with the front port 410 of outer tube 40, and the narrow tube portion of inner tube 10 is inserted in the inside contraction section of outer tube 40 narrow tube portions.Between inner tube 10 middle parts and the extension diameter section of outer tube 40, looping ejector has the annular mixing chamber 430 of contractile ring cone outlet, in inner tube 10, form central ejector for the first time multiple circular holes 140 of fluid input be communicated with annular mixing chamber 430 from inner side.Each on outer tube 40 for the second time fluid input 420 is communicated with annular mixing chamber 430 from outside.The inverted-cone annular mixing tube 440 that between the inwall of the outer wall that inwardly shrink at inner tube 10 rear portions and the inside contraction section of narrow tube portion of outer tube 40, looping ejector inwardly shrinks.Its another distortion is, annular mixing tube 430 has uniform section runner on axially, or annular mixing tube 430 also the annular trunnion in cross section, the small larynx footpath of optional entrance band or annular mixing tube 430 have the runner in convergent cross section on axially.
Basin shape connecting sleeve 30 goes out to hold center hole periphery diapire as ring nozzle seat, the oblique spray orifice 310 of uniform at least one circle, and these oblique spray orifices 310 surround the ring nozzle 407 of annular ejector.The straight-through central nozzle 20 of main fluid entrance 110 and the ring nozzle 407 of basin shape connecting sleeve 30.Referring to Fig. 6, ring nozzle 407 adopts annular spraying nozzle, each oblique spray orifice 310 outlets are passed through mutually and are formed V-arrangement or U-shaped spout with the annular groove 406 with V-arrangement or U-shaped transverse section, annular groove 406 is provided in a side of the connecting sleeve 30 at least one circle concentric grooves in bottom, and each oblique spray orifice 310 export center are distributed on the annular center line of annular groove 406.The jet flow of V-arrangement or U-shaped spout can spread to both sides, causes the transverse shifting of annular mixing tube 440 interior main fluid, is conducive to the diffusion of jet flow in annular mixing tube 440 and is full of.
Ring nozzle 407 is suspended from annular mixing chamber 430, the center line of each oblique spray orifice 310 of connecting sleeve 30 bottoms is harmonious with inverted-cone annular mixing tube 440 center lines substantially, the import of this ring nozzle 407 is communicated with main fluid entrance 110, and the outlet of ring nozzle 407 is just to annular mixing chamber's 430 contractile ring cone outlets and inverted-cone annular mixing tube 440.Should make each circular hole 140 that forms central ejector fluid input last time in inner tube 10 misplace mutually with the radially direct of each oblique spray orifice 310 of connecting sleeve 30 bottom looping ejector ring nozzles 407.
Or as shown in Figure 7, the structure of the annular spraying nozzle that ring nozzle 407-1 adopts is uniform multiple the shape holes that are arranged on ring nozzle seat 30-1 of lopping, each shape hole is made up of a spray orifice 310-1 and a groove 312, and this groove 312 is the radial wedge grooves at mistake this spray orifice 310-1 center of cutting out in the outlet of this spray orifice 310-1.
As shown in Figure 5, connecting sleeve 30 is erected to be screwed in the front port 410 of outer tube 40, and central ejector is sleeved on outer tube 40 from front portion coaxially.Adjust the position that connecting sleeve 30 screws in outer tube 40 front ends, or be provided with and change the pad class controlling mechanism of relative axial position each other with the front port 410 of outer tube 40 at connecting sleeve 30, can change position in outer tube 40 of central ejector and ring nozzle 407, change runner latus rectum and the nozzle distance of annular ejector inverted-cone annular mixing tube 440, with the ejector optiaml characteristics parameter of seeking and regulating adaptation condition to change.
The part that outer tube 40 is positioned at after 440 outlets of annular mixing tube is total output tube that mixes, always mix output tube backward diminishing inner chamber form total mixing chamber 450.The straight length inner chamber of total mixing chamber 450 rear ends is total mixing tube 460.
Before use, should first be communicated with time fluid input 420 with external inferior fluid line, with external main fluid conduit connection main fluid entrance 110.
When work, inferior fluid is sent into time fluid line, main fluid is sent into main fluid conduit.Main fluid and time fluid, as described in last embodiment, repeat no more.
From the main fluid of main fluid entrance 110, a part is by the central nozzle 20 on central ejector, spray to central mixing pipe 130 entrances at a high speed, entrainment simultaneously from fluid input 420 for the second time through annular mixing chamber 430 and central ejector for the first time each circular hole 140 of fluid input enter central mixing chamber 120 by injection time fluid, inferior fluid that passes into central mixing chamber 120 through central nozzle 20 with shrink the periphery that cone exports and be pumped into central mixing pipe 130 by main fluid.Make both in the interior mixing of central mixing pipe 130, then export the first fluid-mixing from central mixing tube 130 ends.
From another part of the main fluid of main fluid entrance 110 by the ring nozzle 407 that on connecting sleeve 30 diapires, the uniform each oblique spray orifice 310 of annular forms, spray working fluid to inverted-cone annular mixing tube 440 entrances of annular ejector at a high speed, entrainment simultaneously from fluid input 420 for the second time enter annular mixing chamber 430 by injection time fluid, inferior fluid that passes into annular mixing chamber 430 is pumped into the annular mixing tube 440 of inverted-cone through ring nozzle 407 and the periphery of contractile ring cone outlet by main fluid.Make both in the interior contact heat transfer of inverted-cone annular mixing tube 440, mass transfer, average rate, all press, then export the second fluid-mixing from inverted-cone annular mixing tube 440 ends.
The second fluid-mixing jet flow of the first fluid-mixing jet injection of central mixing pipe 130 end outputs annular mixing tube 440 end outputs around, jointly enter in total mixing chamber 450 and total mixing tube 460 and carry out mixing for the third time, finally complete high pressure main fluid draws low pressure time fluid and carry out mixed flow conveying.
The reaming resonant cavity 1310 of concentric indent is established in central mixing pipe 130 stage casings, the Circular Aperture > central mixing pipe 130 > central mixing pipe 130 entrance apertures, outlet section aperture of resonant cavity 1310.The circular hole length of resonant cavity 1310 is preferably adjustable, and the simplest method is that central mixing pipe 130 outlet sections are made to the movable exit pipe being spirally connected with resonant cavity 1310 circular holes.Rotate this outer pipe and just can change the length of resonant cavity, produce the mixed pulse in suitable whirlpool when seeking central mixing pipe mixed flow, and swim up and down the beneficial effect of both direction stack that feedback causes, strengthen whole ejector mixing capacity.
A kind of malformation of the present embodiment is: the junction surface between the connecting sleeve 30 of the present embodiment and the inner tube 10 of the present embodiment is cancelled, both are become one; Cancel the connecting sleeve 30 of the present embodiment, make new inner tube top expand to the present embodiment basin shape connecting sleeve 30 position and there is its shape.So, what sealing was fixedly connected with outer tube 40 front end extension diameter section entrances is no longer the connecting sleeve 30 of the present embodiment, but the enlarging outer wall of new inner tube front end; Now ring nozzle is directly arranged on the basin shape chamber base ring wall of new inner tube top expansion.The working method of obvious this malformation is identical with the present embodiment with effect, has just increased the difficulty of processing of new inner tube.
Three, embodiment three
Referring to Fig. 8, the present embodiment and embodiment's two structure is basic identical.Upper in Fig. 8 is actual front, and lower is actual rear.This primary and secondary ejector is made up of short and small inner tube 100, central nozzle 200, connecting sleeve 300, thick long outer tube 400.Inner tube 100 and central nozzle 200 form central ejector, and inner tube 100, outer tube 400, connecting sleeve 300 form annular ejector.Central authorities' ejector input end is coaxially fixed in annular ejector input end extension diameter section entrance, and central ejector posterior segment is coaxially suspended in annular ejector.On outer tube 400 is axial, be longer than the total output tube that mixes of posterior segment formation that inner tube 100 goes out end, total entrance inner chamber that mixes output tube is total mixing chamber 4500, and the convergent footpath inner chamber smooth excessiveness that total mixing chamber 4500 exports is the diffuser pipe 4700 of the total mixing tube 4600 of straight tube inner chamber and flaring footpath inner chamber.Central authorities' ejector output terminal spout is enclosed in annular ejector output terminal central authorities, and they are straight-through total mixing chamber 4500, total mixing tube 4600 and diffuser pipe 4700 jointly.
The inner tube 100 of the present embodiment is three sections of concentric ladder pipes of upper coarse and lower fine successively undergauge, Wei great footpath, its upper end cup-shaped recess 1100, and the endoporus of large footpath cup-shaped recess 1100 is main fluid entrance 1101; In the central diameter pipe 1001 in its stage casing, establish the central nozzle 200 of adjustable upper and lower position, uniform fluid input for the first time 1400 on the perisporium of central diameter pipe 1001 cavity of resorption band contraction mouths, central diameter pipe 1001 cavity of resorptions form the central mixing chamber 1200 of central ejector; The central mixing pipe 1300 that the central diameter pipe 1001 cavity of resorptions path straight tube that contraction extends into is downwards central ejector.Central nozzle 200 is inserted central mixing chamber 1200 and is aligned the connected central mixing pipe 1300 of central mixing chamber 1200 cavity of resorption contraction mouths.A uniform circle main fluid passageway hole 1600 on large footpath cup-shaped recess 1100 end cross wall of inner tube 100.
The large footpath cup-shaped recess 1100 of inner tube 100 is set with and is fixed on center hole 3001 tops in connecting sleeve 300, and the center hole of connecting sleeve 300 3001 is sealed into an annular chamber by inner tube 100.Each main fluid passageway hole 1600 on 1100 end of the cup-shaped recess cross wall of the large footpath of inner tube 100 makes main fluid entrance 1101 be communicated with this annular chamber.Be distributed in spray orifice 3100, the 3200 composition ring nozzles of the circle of two on connecting sleeve 300 diapires oblique.On this inside and outside circle, paired oblique spray orifice 3100,3200 can produce the jet flow of clashing into mutually, and it has along the atomizing of circumferential direction diffusion.Ring nozzle also can be provided in a side of hole or the groove on the annular nozzle carrier of independence being sandwiched between inner tube 100 stage casing 1001 cylindricals and connecting sleeve 300.
On straight pipe 4100 sidewalls of outer tube 400 front end extension diameter sections, establish fluid input for the second time, one fluid input pipe 4200 of this fluid input installation for the second time.Connecting sleeve 300 upper end collar extensions seal and are fixedly connected with straight pipe 4100 mouths of pipe of outer tube 400 top hole enlargements, connecting sleeve 300 upper end endoporus are threaded with the cylindrical of inner tube 100 large footpath, upper end cup-shaped recess 1100, connecting sleeve 300 lower end center holes 3100 can engage and close joining rotationally with central diameter pipe 1001 peripheries in inner tube 100 stage casings, and the narrow tube portion of inner tube 100 is inserted in the inside contraction section at outer tube 400 middle parts.The bottom of connecting sleeve 300 inverted cones is suspended in the straight pipe 4100 at outer tube 400 tops, and between the extension diameter section in inner tube 100 bottoms and the outer tube 400 inside contraction sections in middle part, common looping ejector has the annular mixing chamber 4300 of contractile ring cone outlet, and on connecting sleeve 300, ring nozzle protrudes into annular mixing chamber 4300.In inner tube 100 central ejector each for the first time fluid input 1400 from inner side be communicated with annular mixing chamber 4300.Inferior fluid input pipe 4200 on outer tube 400 is communicated with annular mixing chamber 4300 from outside.The annular mixing tube 4400 of looping ejector between the straight pipe portion inwall of the outer wall that inwardly shrink at inner tube 100 rear portions and the inside contraction section of outer tube 400.On connecting sleeve 300, each spray orifice 3100,3200 of ring nozzle is towards annular mixing tube 4400.There is one section of annular trunnion of minimum transverse section latus rectum at annular mixing chamber's level and smooth straight-through annular mixing tube 4400 entrances of 4300 conical ring undergauge outlet, straight-through annular mixing tube 4400 back segments that expand gradually axial latus rectum of this annular trunnion.
When work, inferior fluid is sent into time fluid input pipe 4200, main fluid is sent into main fluid entrance 1101.The selection of main fluid and time fluid, as described in last embodiment, repeats no more.
From the main fluid of main fluid entrance 1101, a part is by the central nozzle 200 on central ejector, spray to central mixing pipe 1300 entrances at a high speed, entrainment simultaneously from inferior fluid input pipe 4200 through annular mixing chamber 4300 and central ejector for the first time fluid input 1400 enter central mixing chamber 1200 by injection time fluid, inferior fluid that passes into central mixing chamber 1200 through central nozzle 200 with shrink the periphery that cone exports and be pumped into central mixing pipe 1300 by main fluid.Make both in the interior mixing of central mixing pipe 1300, then export the first fluid-mixing from central mixing tube 1300 ends.
From another part of the main fluid of main fluid entrance 1101 by the ring nozzle of oblique spray orifice 3100,3200 compositions of two circles uniform on connecting sleeve 300 base ring walls, spray working fluid to annular mixing tube 4400 entrances of annular ejector at a high speed, entrainment simultaneously from inferior fluid input pipe 4200 enter annular mixing chamber 4300 by injection time fluid, inferior fluid that passes into annular mixing chamber 4300 is bored through ring nozzle and contractile ring the periphery exporting and is pumped into annular mixing tube 4400 by main fluid.Make both at the interior contact heat transfer of annular mixing tube 4400, mass transfer, average rate, all press, then export the second fluid-mixing from inverted-cone annular mixing tube 4400 ends.
The second fluid-mixing jet flow of the first fluid-mixing jet injection of central mixing pipe 1300 end outputs annular mixing tube 4400 end outputs around, jointly enter in total mixing chamber 4500 and total mixing tube 4600 and mix for the third time, and export from the diffuser pipe 4700 in flaring footpath.Finally complete high pressure main fluid draws low pressure time fluid and carry out mixed flow conveying.
Adjust the position that large footpath cup-shaped recess 1100 screws in connecting sleeve 300, can change the axial position of central ejector inner tube 100 in annular ejector, thereby change the runner latus rectum of annular mixing tube 4400 and the spray orifice of ring nozzle 3100,3200 to the nozzle of annular mixing tube 4400 entrances apart from and central mixing pipe 1300 export the spout distance to total mixing chamber 4500 inverted cones outlets, with the ejector optiaml characteristics parameter of seeking and regulating adaptation condition to change.
When the present embodiment main fluid is used liquid, ring nozzle can adopt annular spraying nozzle, as uniform in lopping on connecting sleeve 300 diapires multiple spraying nozzles with swirling flow atomizing core is set.Or ring nozzle can adopt the uniform collision jet spraying nozzle being arranged in pairs on connecting sleeve 300 diapires (being ring nozzle seat) of points two circles, there is the annular spraying nozzle of the spray orifice 3100,3200 of the collision jet that crosses one another as multipair.Although adopting annular spraying nozzle to be directed at ejector delivery pressure reduces, but it can make main flow physical efficiency adhere to, carry more time fluid, can make the contact between primary and secondary fluid from confluxing, just start to mix, and more even close, thereby can shorten the length of primary and secondary ejector and increase specific function, as dedusting, flash evaporation, rapid condensation etc.This is applicable to require high mass ratio of induced-to-inducing air not require the occasion of high output pressure with accelerating heat and mass speed very much.
The above, be only preferred embodiment of the present invention, do not limit scope of the invention process with this, and the equivalence of doing according to technological scheme of the present invention and description changes and modifies, and all should belong to the scope that the present invention is contained.
Claims (9)
1. primary and secondary ejector, is characterized in that: its central ejector is arranged in annular ejector coaxially, common total mixing chamber and the total mixing tube of being communicated with of both outlets; A part for main fluid is sprayed to central mixing tube inlet from central ejector top by central nozzle, and the inferior fluid that injection enters central mixing chamber from annular ejector upper side position entrance enters together in central mixing pipe and mixes; Another part of main fluid sprays to annular mixing tube entrance from annular ejector top by ring nozzle, and the inferior fluid that injection enters annular mixing chamber from annular ejector upper side position entrance enters together in annular mixing tube and mixes; The outlet jet flow of central mixing pipe annular mixing tube outlet jet flow around injection in total mixing chamber enters total mixing tube jointly mixes for the third time, and the mixed flow that completes high pressure main fluid draws low pressure time fluid is carried;
Described central ejector input end is coaxially fixed in described annular ejector input end extension diameter section entrance, in described central ejector, back segment is coaxially suspended in described annular ejector; Described central ejector output terminal spout is enclosed in described annular ejector output terminal central authorities, and they lead directly to described total mixing chamber and described total mixing tube jointly;
Described central ejector comprises central nozzle and the stair-stepping inner tube of coaxial package; This central nozzle is located at the entrance of this inner tube middle part hole enlargement inner chamber, and this hole enlargement inner chamber forms described central mixing chamber, uniform fluid input of described central mixing chamber sidewall; The described central mixing pipe that this inner tube back segment is path; Described central nozzle outlet aligns contraction conical outlet and the described central mixing pipe of described central mixing chamber, and the contraction conical outlet of described central mixing chamber and described central mixing pipe are smoothly straight-through;
Described annular ejector is made up of described inner tube, connecting sleeve and the stepped outer tube of coaxial package; This outer tube front end extension diameter section entrance is connected with this connecting sleeve is concentric, and the endoporus fixed seal connection of described inner tube and this connecting sleeve makes described inner tube coaxially be suspended at this outer tube central authorities; Annular chamber between this outer tube front end extension diameter section endoporus and this connecting sleeve outer wall and described inner tube middle part outer wall forms described annular mixing chamber; Between this connecting sleeve and described inner tube, be positioned at the part looping nozzle carrier of described annular mixing chamber apical ring wall, on this ring nozzle seat, the hole of lopping or groove or seam or its constitute described ring nozzle; Annular chamber between next section of endoporus of this outer tube front end extension diameter section and described inner tube rear portion outer wall forms described annular mixing tube; The described annular mixing tube that the outlet of described ring nozzle is just being shunk conical ring outlet and smoothly led directly to this conical ring outlet described annular mixing chamber;
The main fluid entrance of being located at described central ejector center of top is communicated with respectively described central nozzle and described ring nozzle; The inferior fluid input of described annular ejector is located on the outer side wall of described annular mixing chamber, the inferior fluid input of described central mixing chamber be distributed on the perisporium of described central mixing chamber and by described annular mixing chamber around;
Outer axial tube be upwards longer than inner tube go out end in, back segment forms described total mixing chamber with convergent footpath and described total mixing tube of straight length in turn.
2. primary and secondary ejector according to claim 1, it is characterized in that: the described main fluid entrance that described inner tube enters end encloses step hole enlargement round platform outward, around the secondary round platform of this step hole enlargement round platform, radial equipartition is communicated with the main fluid intercommunicating pore of described main fluid entrance, this step hole enlargement round platform is vertical uniform fluid through-hole around, the isolation that misplaces mutually of this fluid through-hole and this main fluid through hole; This large footpath of step hole enlargement round platform section is sealed to be fixed in described connecting sleeve, both common described ring nozzle seat and described ring nozzles of forming, and described connecting sleeve sealing is fixed in the front end extension diameter section inlet opening of described outer tube; The straight-through described central nozzle of described main fluid entrance is also communicated with described ring nozzle through this main fluid intercommunicating pore; Described inferior fluid input has two kinds, a kind of being located on described annular mixing chamber's sidewall and around described central mixing chamber sidewall, and both interconnect; Another kind of enter this step hole enlargement round platform of end through hole of vertical uniform and straight-through described annular mixing chamber roof around for described inner tube.
3. primary and secondary ejector according to claim 1, is characterized in that: the described straight-through described central nozzle of main fluid entrance and described ring nozzle; Described outer tube front end extension diameter section entrance is fixedly connected with or is threaded with basin shape connecting sleeve outer wall is concentric, and this basin shape connects and extracts end center hole periphery diapire as described ring nozzle seat, establishes described ring nozzle on it; Described ring nozzle is suspended from described annular mixing chamber and just to described annular mixing chamber's outlet and described annular mixing tube; Go out to hold center hole and the described inner tube of this basin shape connecting sleeve enter to hold that cylindrical is concentric is tightly connected, or the center hole that goes out to hold of this basin shape connecting sleeve directly extends described inner tube downwards, and basin shape connecting sleeve and described inner tube are integrated part; Described inner tube enters end and establishes described central nozzle.
4. primary and secondary ejector according to claim 1, it is characterized in that: described inner tube is the ladder pipe of the large footpath of front end band cup-shaped recess, wherein the endoporus of large footpath cup-shaped recess is described main fluid entrance, the cylindrical of large footpath cup-shaped recess is threaded in described connecting sleeve, described connecting sleeve front end periphery and described outer tube front end extension diameter section entrance are fixed, the rear portion of described connecting sleeve inverted cone is suspended in the described annular mixing chamber of the anterior extension diameter section endoporus formation of described outer tube, described connecting sleeve lower end center hole and described inner tube stage casing close joining of cylindrical; A uniform circle main fluid passageway hole on cross wall at the bottom of the cup-shaped recess of the large footpath of described inner tube, described main fluid passageway hole makes described main fluid entrance be communicated with the annular chamber of described connecting sleeve diapire closed front; Each spray orifice of described ring nozzle is distributed on described connecting sleeve annular bottom wall, or described ring nozzle is located at and is sandwiched between described inner tube stage casing cylindrical and described connecting sleeve independently on ring nozzle seat; On described annular mixing chamber's sidewall, establish described inferior fluid input.
5. primary and secondary ejector according to claim 1, is characterized in that: described annular mixing tube is have uniform section runner or convergent cross section runner and be to going out to hold the inverted-cone annular mixing tube of undergauge gradually on axially.
6. primary and secondary ejector according to claim 1, is characterized in that: described ring nozzle is the narrow annular channel on ring nozzle seat; Or described ring nozzle is many uniform straight trough/skewed slots that are ring configuration around ring nozzle seat; Or described ring nozzle is on ring nozzle seat, to be multiple straight circular hole/tiltedly circular hole that circle distributes, the outlet of described each circular hole is passed through mutually with the annular recess on described ring nozzle seat, this annular recess is located at this ring nozzle seat and is gone out on end face, and has V-arrangement or channel section.
7. primary and secondary ejector according to claim 1, is characterized in that: described ring nozzle adopts annular spraying nozzle; The structure of this annular spraying nozzle is uniform multiple the shape holes that are arranged on described ring nozzle seat of lopping, and each shape hole is made up of a spray orifice and a groove, and this groove is the radial wedge groove of this orifice center of mistake of cutting out in the outlet of this spray orifice; Or the structure of this annular spraying nozzle is the uniform multiple spraying nozzles with swirling flow atomizing core that are arranged on described ring nozzle seat of lopping; Or the structure of this annular spraying nozzle is that lopping is arranged on the multipair spray orifice with the collision jet that crosses one another on described ring nozzle seat.
8. primary and secondary ejector according to claim 1, it is characterized in that: the annular mixing tube of described annular ejector is provided with one section of annular trunnion, this annular trunnion has minimum transverse section latus rectum in described annular mixing tube runner whole process, this annular trunnion is located at the conical ring undergauge outlet of described annular mixing chamber, the straight-through annular mixing tube that expands gradually axial latus rectum of this annular trunnion.
9. primary and secondary ejector according to claim 1, it is characterized in that: the described central mixing pipe stage casing of described central ejector is established concentric inner cavity and formed resonant cavity, > central mixing tube inlet aperture, > central mixing pipe outlet aperture, resonant cavity aperture, this resonance lumen pore axial length is adjustable.
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| CN201110255518.6A CN102678635B (en) | 2011-08-31 | 2011-08-31 | Primary-secondary ejector |
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| CN201110255518.6A CN102678635B (en) | 2011-08-31 | 2011-08-31 | Primary-secondary ejector |
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| CN102678635A CN102678635A (en) | 2012-09-19 |
| CN102678635B true CN102678635B (en) | 2014-09-10 |
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| CN102954047B (en) * | 2011-08-31 | 2016-01-20 | 韩铁夫 | A kind of injection mixer |
| CN103115027B (en) * | 2013-02-05 | 2015-09-16 | 中国人民解放军国防科学技术大学 | Supersonic velocity circular flow nozzle with injector |
| CN105240326A (en) * | 2015-11-10 | 2016-01-13 | 南京元道环保科技有限公司 | Injection pump with centripetal nozzle |
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| GB191023938A (en) * | 1909-10-16 | 1911-06-21 | Koerting Ag | Improvements in Water-feed Injectors. |
| SU1291730A1 (en) * | 1985-10-01 | 1987-02-23 | Ивано-Франковский Институт Нефти И Газа | Multiple-nozzle ejector |
| RU2155280C1 (en) * | 1999-04-08 | 2000-08-27 | Фисенко Владимир Владимирович | Gas-liquid jet device |
| RU2195586C2 (en) * | 2001-03-29 | 2002-12-27 | Пензенский технологический институт | Multiple nozzle jet device |
| CN101625000A (en) * | 2009-08-06 | 2010-01-13 | 河北科技大学 | Adjustable multi-streaming type steam jet heat pump |
| CN201827161U (en) * | 2010-10-27 | 2011-05-11 | 上海理工大学 | Secondary injection ejector |
| CN201884341U (en) * | 2010-07-05 | 2011-06-29 | 河南理工大学 | Parallel type jet pump |
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2011
- 2011-08-31 CN CN201110255518.6A patent/CN102678635B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191023938A (en) * | 1909-10-16 | 1911-06-21 | Koerting Ag | Improvements in Water-feed Injectors. |
| SU1291730A1 (en) * | 1985-10-01 | 1987-02-23 | Ивано-Франковский Институт Нефти И Газа | Multiple-nozzle ejector |
| RU2155280C1 (en) * | 1999-04-08 | 2000-08-27 | Фисенко Владимир Владимирович | Gas-liquid jet device |
| RU2195586C2 (en) * | 2001-03-29 | 2002-12-27 | Пензенский технологический институт | Multiple nozzle jet device |
| CN101625000A (en) * | 2009-08-06 | 2010-01-13 | 河北科技大学 | Adjustable multi-streaming type steam jet heat pump |
| CN201884341U (en) * | 2010-07-05 | 2011-06-29 | 河南理工大学 | Parallel type jet pump |
| CN201827161U (en) * | 2010-10-27 | 2011-05-11 | 上海理工大学 | Secondary injection ejector |
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