CN102678635A - Primary-secondary ejector - Google Patents
Primary-secondary ejector Download PDFInfo
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- CN102678635A CN102678635A CN2011102555186A CN201110255518A CN102678635A CN 102678635 A CN102678635 A CN 102678635A CN 2011102555186 A CN2011102555186 A CN 2011102555186A CN 201110255518 A CN201110255518 A CN 201110255518A CN 102678635 A CN102678635 A CN 102678635A
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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
The two-fluid ejector is with the inferior fluid of higher pressure main fluid injection low pressure (or not having pressure), accomplishes main fluid suction time fluid and joins the device that is mixed and presses mixed flow to carry.It is simple and reliable, is used for multiple fluid equipment.Existing typical venturi ejector is made up of main fluid inlet, nozzle, inferior fluid input, mixing chamber, trunnion or mixing diffuser pipe.The inferior fluid that feeds mixing chamber is pumped into mixing tube by the jet of main fluid nozzle, and the 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 is leveraged to the modern agent structure of using a single circle jet pipe that do not change yet.The advantage of this single tube structure be simple, working stability is reliable; But have following shortcoming: existing injection ejector mainly leans on the turbulent fluctuation diffusion of jet in mixing the pipe range stroke; Make main fluid and time mutual blending of fluid; The turbulent fluctuation of jet diffusion needs a process that in mixing tube, produces development and strengthen, thereby ejector all must need elongated mixing tube (or mixing diffuser pipe), and big flow ejector needs the heavy caliber mixing tube; The bigger length that just need increase mixing tube more greatly of bore; Thereby cause big specification ejector axial dimension and the excessive shortcoming of weight, this is concerning big flow small volume of needs and underloaded big occasion, and it installs and uses very unfavorable.
Patent No. ZL200920106414.7 fixed type multi-nozzle jet pump patent, discloses a mining annular jet pump, which is set by the outer annulus into the middle of a lap through the duct is constituted of the small jet, each of the small injector consists of a nozzle, a hose, a diffusion tubes; it installed in the underground, the use of high voltage power fluid ejector formation fluid, oil Francis lifted to the ground to achieve the purpose.This device is actual to be a Jet injector that is composed in parallel by the little single tube liquid jetting device of a circle.Although the use of multiple small parallel may constitute a large jet jet pump, but their main function is to pump underground mining output, its structure is relatively complex and special, so as the requirements of small and light weight with high flow ejector and 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 ejector, volleys the low shortcoming of rate; Performance was good when a kind of big flow was provided, the primary and secondary ejector that length is short, in light weight, injection efficient is high.
Technological scheme of the present invention is: the primary and secondary ejector, and its central ejector is arranged in the annular ejector coaxially, common total mixing chamber and the total mixing tube of being communicated with of both outlets; The part of main fluid is sprayed to the central mixing tube inlet from central ejector top through central nozzle, and the injection inferior fluid that inlet gets into the central mixing chamber from annular ejector upper side position gets into together in the central mixing pipe and mixes; Another part of main fluid sprays to annular mixing tube inlet from the annular ejector top through ring nozzle, and the injection inferior fluid that inlet gets into annular mixing chamber from annular ejector upper side position gets into together in the annular mixing tube and mixes; The outlet jet flow of central mixing pipe total mixing tube of the annular common entering of mixing tube outlet jet flow around the injection in total mixing chamber mixes for the third time, accomplishes the mixed flow of high pressure main fluid draws low pressure time fluid and carries.
In the enforcement structure of recommending: described central ejector input end is coaxial to be fixed in the described annular ejector input end extension diameter section inlet, in the said central ejector, back segment is coaxial is suspended in the described annular ejector; It is central that described central ejector output terminal spout is enclosed in described annular ejector output terminal, their straight-through jointly described total mixing chamber and described total mixing tubes;
Said central ejector comprises the central nozzle and the stair-stepping interior pipe of coaxial package; This central nozzle is located at the inlet of pipe middle part hole enlargement inner chamber in this, and this hole enlargement inner chamber forms described central mixing chamber, and said central mixing chamber sidewall is uniformly distributed with time fluid input; Should interior pipe back segment be the said central mixing pipe of path; Said central nozzle goes out end and aligns the contraction conical outlet of said central mixing chamber and level and smooth with it straight-through said central mixing pipe;
Said annular ejector is made up of above-mentioned interior pipe, connecting sleeve and the stepped outer tube of coaxial package; This outer tube front end extension diameter section port is connected with this connecting sleeve is concentric, above-mentioned in the pipe and the endoporus fixed seal connection of this connecting sleeve, make above-mentioned in coaxial this outer tube central authorities that are suspended at of pipe; Annular chamber between this outer tube front end extension diameter section endoporus and this connecting sleeve outer wall and the above-mentioned interior pipe middle part outer wall forms described annular mixing chamber; This connecting sleeve and above-mentioned in be positioned at the part looping nozzle carrier of said annular mixing chamber apical ring wall between the pipe, the hole of lopping or groove or seam or its constitute described ring nozzle on this ring nozzle seat; Annular chamber between next section endoporus of this outer tube front end extension diameter section and the above-mentioned interior pipe rear portion outer wall constitutes described annular mixing tube; The outlet of said ring nozzle is shunk conical ring outlet and the said annular mixing tube smoothly straight-through with this conical ring outlet over against said annular mixing chamber;
The main fluid inlet of being located at said central ejector center of top is communicated with said central nozzle and said ring nozzle respectively; The inferior fluid input of said annular ejector is located on the outer side wall of said annular mixing chamber, and the inferior fluid input of said central mixing chamber is distributed on the perisporium of said central mixing chamber and by described annular mixing chamber and centers on;
Manage out in outer axial tube upwards is longer than end in, back segment constitutes said total mixing chamber in band convergent footpath and said total mixing tube of straight length in order.
This by central nozzle, stair-stepping in pipe, 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.
In the overall technical solution based on one kind of picture ejector: the inner tube into the inlet end of said main body flared peripheral rung round table, the cascade of secondary flaring round table round table surrounded by communicating with the uniform radial the main body of the main fluid inlet communicating hole, the diameter-enlarged cascade frustum of fluid around the vertical through-holes uniformly distributed times, the second fluid, and the main body through-holes each hole misalignment isolation; the rung enlarged diameter circle diameter section is sealed and fixed NTU in said connecting kit, both together form said annular nozzle seat and said annular nozzle fixed to said connection sleeve closed at the distal end of the outer tube inlet aperture in the enlarged diameter section; the mainstream fluid inlet through said central nozzle and through said periphery of the inner tube into the end stage of the cascade of the enlarged diameter circular main body communication hole communicating said annular nozzle; said secondary fluid inlet has two kinds, one in said annular sidewall of the mixing chamber and said mixing chamber wall surrounding a central, and both connected to each other; another end of said inner tube into the expanded diameter of the round table cascade around and through the vertical uniform the top wall of the mixing chamber an annular secondary fluid inlet holes.
On above-mentioned total technical scheme basis, another primary and secondary injector: described straight-through described central nozzle of main fluid inlet and described nozzle ring; Said outer tube front end extension diameter section inlet and basin shape adapter sleeve outer wall be concentric fixedlys connected or is threaded, and this basin shape connection is extracted and held the periphery diapire as described nozzle ring seat, establishes described nozzle ring on it; Described nozzle ring is suspended from the described annular mixing chamber and over against described annular mixing chamber and exports and described annular mixing tube; The centre bore of this basin shape adapter sleeve and said interior concentric being tightly connected of tube inlet section cylindrical, perhaps the centre bore of this basin shape adapter sleeve directly extends described interior pipe downwards, and promptly this basin shape adapter sleeve and described interior pipe are integral piece; Tube inlet is established described central nozzle in said.
On above-mentioned total technological scheme basis; Another primary and secondary ejector: pipe is the ladder pipe of the big footpath of upper end band cup-shaped recess in described; The endoporus of wherein big footpath cup-shaped recess is described main fluid inlet; The cylindrical of big footpath cup-shaped recess is threaded in the described connecting sleeve; The said connecting sleeve upper end collar extension and the said outer tube top hole enlargement mouth of pipe are fixed, and the bottom of said connecting sleeve inverted cone is suspended in the said annular mixing chamber of said outer tube top hole enlargement tube chamber formation, said connecting sleeve lower end center hole and said interior pipe stage casing close joining of cylindrical; In said, be uniformly distributed with a circle main fluid passageway hole at the bottom of the cup-shaped recess of the big footpath of pipe on the cross wall, above-mentioned main fluid passageway hole makes described main fluid inlet be communicated with the annular chamber of said connecting sleeve diapire top sealing; Each spray orifice of said ring nozzle is distributed on the said connecting sleeve annular bottom wall, or said ring nozzle be located at be sandwiched in said between pipe stage casing cylindrical and the said connecting sleeve independently on the ring nozzle seat; Establish described time fluid input on the described annular mixing chamber sidewall.
The said annular mixing tube of primary and secondary ejector is uniform section runner or convergent cross section runner are arranged on axially and to be to going out to hold the back taper formula annular mixing tube of undergauge gradually.This structure helps the injection of the jet of center mixing tube output to annular mixing tube output jet, and hitting mutually of self effluenting of annular mixing tube and mixing.
The described ring nozzle of primary and secondary ejector is the narrow annular channel on the ring nozzle seat; The structure of this ring nozzle is the simplest, is easy to most realize.Or said ring nozzle is for being many straight trough/skewed slots that are uniformly distributed with of ring configuration around the ring nozzle seat; This ring nozzle has the function of eddy flow, is beneficial to improve efficient main, that inferior fluid mixes at annular mixing tube confidential reference items.Or a plurality of straight circular hole/oblique circular hole of said ring nozzle on the ring nozzle seat, being the circle distribution; Annular recess with auspicious circle on the outlet of above-mentioned each circular hole and the said ring nozzle seat passes through mutually; This annular recess is located at this ring nozzle seat and is gone out on the 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 laterally moving of the interior main fluid of annular mixing tube, helps the diffusion of jet flow in annular mixing tube and is full of, thereby increase the suction piston action, the raising wall attachment effect; Make between master, inferior fluid and mix more even closely, can significantly improve to join and mix intensity and heat and mass speed from the initial just ginseng of confluxing.
When the main body of liquid, said annular nozzle using circular spray nozzles; said annular nozzle using circular spray nozzles; spray nozzle structure of the ring is a ring are disposed in the annular nozzle cloth seat more eye-shaped holes, each eye-shaped hole is defined by a spray hole and a groove configuration, the groove is at the outlet of the nozzle hole cut out of the nozzle hole through the radial center wedge grooves; or that the annular structure of the spray nozzle is uniformly distributed into the ring disposed in the annular nozzle having a plurality of base core swirl atomizing spray nozzle; or spray nozzle of the annular ring structure is a seat provided in the annular nozzle having a plurality of pairs to cross each other impact jet orifice.Annular nozzle atomization using a ring with spray nozzle allows the primary and secondary fluids to mix more from the confluence of the initial uniform closely, it can significantly increase the present invention picture ejector heat and mass transfer rates, and increased dust, rapid evaporation, condensation and other specific functions quickly.
The annular mixing tube of the said annular ejector of primary and secondary ejector is provided with one section annular trunnion; This annular trunnion has minimum transverse section latus rectum in the said annular mixing tube runner whole process; The conical ring undergauge that this annular trunnion is located at said annular mixing chamber goes out end, the straight-through annular mixing tube that enlarges axial latus rectum gradually of this annular trunnion.Use trunnion that the jet of annular ejector output can be disperseed or atomizing by bunchy, it can make the main flow physical efficiency adhere to, carry more time fluid, shortens primary and secondary injector length and increases specific functions such as dedusting, rapid evaporation, rapid condensation thereby show chopsticks.
The said central mixing pipe stage casing of the said central ejector of primary and secondary ejector is established concentric inner cavity and is formed resonant cavity, resonant cavity aperture＞central mixing pipe outlet aperture＞central mixing tube inlet aperture, and this resonance lumen pore axial length is adjustable.Resonant cavity can make the resonant pulses of the fluid-mixing generation certain frequency in the central mixing pipe under proper condition, can cause the beneficial effect of the blending ability that strengthens whole primary and secondary ejector to defeated stream resonant feedback of mixing of upstream and downstream both direction and stack.
The 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, perhaps between the outer tube of described central ejector and described ring nozzle and described annular ejector, be provided with and change spiral, the pad class controlling mechanism of relative axial position each other; To change nozzle distance or the nozzle distance and the annular mixing tube cross section of fluid channel of total ejector and annular ejector, to obtain the good ejector structural parameter of adaptation condition.
The main fluid of primary and secondary ejector input of the present invention can be gas, liquid or the gas-liquid mixed flow body of elevated pressures, and inferior fluid can be the lower or stress-free gas of pressure, liquid or heterogeneous fluid-mixings such as gas-liquid mist and flue dust.Primary and secondary injector of the present invention mixes the long single tube venturi of tradition injection, turns to the short structure of central two-stage injection and circumferential annular injection output in parallel.Keeping certain larynx face than under the situation; The annular mixing tube runner latus rectum of inner and outer pipe dress all diminishes relatively; This makes the primary fluid jetstream of central mixing pipe and annular mixing tube can be full of sooner to reach to attach the wall pumping action; Thereby than with the single tube ejector of flow more big piston suction capactity being arranged, this can improve the injection ratio.
Owing to the speed of the outlet mixed flow of two mixing tubes, pressure, mix difference such as degree, when making them get into total mixing chamber, total mixing tube, increased that both run foul of each other, the whirlpool mixes the secondary mixed function; Can tiltedly spray eddy flow because the outer shroud nozzle has the hole or the groove of peripheral, oblique, and the spout of V-arrangement, channel section groove is arranged, can cause laterally moving of the interior main fluid of annular mixing tube; Can adopt the atomized spray aspiration drainage in addition; These all can make between the primary and secondary fluid and mix more even closely from the initial just ginseng of confluxing, and the ginseng that can significantly improve the primary and secondary injector is mixed intensity and heat and mass speed.
Compare with traditional single tube ejector, primary and secondary ejector of the present invention is through stronger with the process fluid ability, and big flow performance in man-hour is good, and axial dimension and weight greatly reduce and injection and mixing efficiency heighten.Characteristics with economical with materials, saving saving in space energy and work efficiency.
A kind of or two kinds of time fluids of the available as required a kind of main fluid injection of primary and secondary ejector of the present invention are exported a kind of mixed flow, and being suitable in big flow place if can source, environmental protection or suction mixed flow element is made in the conditional traffic tool of dimensional weight place used.
Description of drawings
Fig. 1 is first embodiment's of primary and secondary ejector of the present invention structural representation.
Fig. 2 be among Fig. 1 A to the structural representation of ring nozzle.
Fig. 3 be among Fig. 1 A to the structural representation of another kind of ring nozzle.
Fig. 4 be ring nozzle among 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 among Fig. 5 G to structural representation.
Fig. 7 be ring nozzle among 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, going up among Fig. 1 is actual the place ahead, is actual rear down.This primary and secondary ejector is made up of short and small interior pipe 1, central nozzle 2, connecting sleeve 3, thick long outer tube 4 and ring nozzle 7.In pipe 1 form central ejector with central nozzle 2, interior pipe 1, outer tube 4, connecting sleeve 3 and ring nozzle 7 are formed annular ejectors.Central authorities' ejector input end is coaxial to be fixed in annular ejector input end extension diameter section 41 inlets coaxial being suspended in the annular ejector in central ejector posterior segment.Pipe 1 goes out in the outer tube 4 of end in being longer than axially, back segment constitutes 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 of total mixing chamber 45 outlets is the 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, their straight-through jointly total mixing chambers 45, total mixing tube 51 and.Diffuser pipe 52
Interior pipe 1 is the stepped shaft pipe; Main fluid inlet 11 is established in going into of it in the end; The main fluid 11 outer periphery step hole enlargement round platforms that enter the mouth; The front portion of this step hole enlargement round platform is the evagination round platform of flanged pin 17, and secondary round platform is formed at the contraction tapering that shrink backward gradually at the middle part and the rear portion of intermediate diameters, and step hole enlargement round platform is later on the straight pipe of minor diameter.In leave annular groove 19 on pipe 1 the evagination round platform front-end face, annular groove 19 bottoms are uniformly distributed with the bottom surface of a plurality of vertical first time of fluid through-hole 15 straight-through step hole enlargement round platforms; Also be uniformly distributed with a plurality of connection main fluid inlets 11 and the radially main fluid through hole 16 that shrinks the tapering outer circumferential face on the step hole enlargement round platform of interior pipe 1.Fluid through-hole 15 is interconnected with each main fluid through hole 16 mutual isolation for the first time for each.
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 big footpath of interior pipe 1 anterior step hole enlargement round platform section evagination round platform are fixed on connecting sleeve 3 front end endoporus middle part.The narrow tube portion of interior pipe 1 is inserted in the narrow tube portion of outer tube 4, and above-mentioned central ejector is sleeved on the outer tube 4 from the front portion coaxially.Constitute the annular mixing chamber 43 with contractile ring conical outlet between the hole enlargement hole of interior pipe 1 and outer tube 4, each on interior pipe 1 step hole enlargement round platform fluid input 15 for the first time is communicated with annular mixing chamber's 43 roofs from the inboard.Be uniformly distributed with a plurality of second time of fluid input 42 on the outer tube 4 front end expansion tube sidewalls, fluid input 42 is communicated with annular mixing chamber 43 from the outside for the second time; On 12 sidewalls of central mixing chamber for the first time fluid input 14 communicate with annular mixing chamber 43.Constitute the annular mixing tube 44 of back taper formula between the outer wall that inwardly shrink at interior pipe 1 narrow tube portion rear portion and the narrow tube portion inwall of outer tube 4.Annular mixing tube 44 has the runner in uniform section or convergent cross section.
The step hole enlargement round platform of interior pipe 1 and the connecting part of connecting sleeve 3 endoporus form the ring nozzle seat that annular pass 6 is arranged.Annular pass 6 is communicated with main fluid inlet 11 through each main fluid intercommunicating pore 16 of interior pipe 1 step hole enlargement round platform.Establish ring nozzle 7 on the ring nozzle seat.Referring to Fig. 2, ring nozzle 7 is the step hole enlargement round platform bottom 18 of interior pipe 1 and the circle narrow annular channel between the connecting sleeve 3 endoporus lower wall 31.Perhaps referring to Fig. 3 and Fig. 4, ring nozzle 7-1 also can be a circle skewed slot 71 or a straight trough that is uniformly distributed with at 18-1 place, interior pipe 1 step hole enlargement round platform bottom.The outlet of ring nozzle 7 (7-1) is over against annular mixing chamber's 43 contractile rings awl outlet and back taper formula annular mixing tube 44.
Part and expansion tube 5 that outer tube 4 is positioned at after annular mixing tube 44 outlets constitute total output tube that mixes.Total inner chamber that mixes the anterior tapered cone of output tube constitutes total mixing chamber 45.The inner chamber that total mixing chamber 45 goes out the prolonged section straight tube of end constitutes total mixing tube 51, and the inner chamber of the expansion tube at straight tube rear portion is total diffuser pipe 52.
Be provided with between the front port 41 of connecting sleeve 3 and outer tube 4 and change each other spiral, the pad class controlling mechanism of relative axial position and do to move and be connected; In order to the nozzle distance between the contraction awl mouth of ring nozzle 7 and annular mixing chamber 44 on the adjusting annular ejector; And the runner latus rectum that changes annular mixing tube 44, to seek and to regulate the ejector optiaml characteristics parameter that adaptation condition changes.
Before the use, earlier each time fluid input 15,42 is communicated with same fluid source, is communicated with main fluid inlet 11 with primary fluid source.Primary fluid source pressure is higher, and inferior fluid source pressure is lower or do not have a pressure.They can be liquid or gas or gas or liquid aerosol; Inferior fluid also can be the solid mist of gas-liquid.Characteristics and fluid phase state according to main fluid injection time fluid; Can be with the inferior fluid of gas or gas main fluid injection liquid; Perhaps use the main fluid injection gas of liquid or the inferior fluid of gas or gas-solid mixture; Perhaps use the inferior fluid of the main fluid injection liquid of liquid, perhaps, perhaps use the main fluid injection gas of gas-liquid mixture or the inferior fluid of gas-solid mixture etc. with the inferior fluid of the main fluid injection gas-solid mixture of gas or gas-liquid mixture.
Main fluid from main fluid inlet 11; A part is through central nozzle 2; Spray working fluids through central mixing chamber 12 to central mixing pipe 13, entrainment simultaneously from each for the first time around fluid through-hole 15 and the annular mixing chamber 43 for the second time fluid input 42 get into the inferior fluids of central mixing chambers 12 through fluid inputs 14 for the first time; The inferior fluid that feeds central mixing chamber 12 on the central ejector is pumped into the central mixing pipe 13 on the central ejector through central nozzle on the central ejector 2 and the periphery that shrinks the awl outlet by main fluid; Make both in central mixing pipe 13 contact heat transfer, mass transfer, all speed, all press central mixing pipe 13 terminal output first fluid-mixings from the central ejector again.
From another part of the main fluid of main fluid inlet 11 through each intercommunicating pore 16; Through ring nozzle 7; Annular mixing tube 44 inlets to annular ejector spray working fluid at a high speed; Entrainment simultaneously from the second time fluid input 42 with each for the first time fluid through-hole 15 get into annular mixing chamber 43 by injection time fluid, inferior fluid that feeds annular mixing chamber 43 is pumped into the annular mixing tube 44 of back taper formula of annular ejector by main fluid through the ring nozzle 7 and the periphery of contractile ring awl outlet.Make both in annular mixing tube 44 contact heat transfer, mass transfer, all speed, all press, again from annular mixing tube 44 terminal output second fluid-mixings.
The second fluid-mixing jet flows from the central ejector central mixing pipe 13 terminal first fluid-mixing jet flow injections of exporting from annular mixing tube 44 terminal outputs; The common entering carried out the and mixed for the third time in total mixing chamber 45, total mixing tube 51 and the total diffuser pipe 52, finally accomplish high pressure main fluid draws low pressure time fluid and carry out mixed flow and carry.
Present embodiment can have multiple function as required: toply explained orally a kind of main fluid injection and export a kind of mixed flow with a kind of fluid.Can also be with a kind of fluid source of each fluid input through hole 15 connections for the first time, with the another kind of time fluid sources of each fluid input 42 connections for the second time; With two kinds of different inferior fluids of a kind of main fluid injection, export a kind of mixed flow.These characteristics make its use wider, and being particularly suitable in big flow place if can source, environmental protection or suction mixed flow element is made in the conditional traffic tool of dimensional weight place used.
Two, embodiment two
Second embodiment's of primary and secondary ejector of the present invention structure, as shown in Figure 5.Going up among Fig. 5 is actual the place ahead, is actual rear down.This primary and secondary ejector is made up of short and little interior pipe 10, central nozzle 20, connecting sleeve 30, thick and long outer tube 40.Interior pipe 10 is formed central ejector with central nozzle 20.In pipe 10, connecting sleeve 30, outer tube 40 form annular ejectors.Central authorities' ejector is arranged in the 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 interior pipe 10 is the directly round central holes of major diameter, and the middle part is by the straight circular hole portion of diameter maximum and the hole enlargement hole section of forming to the aftershrinkage tapering, and hole enlargement hole section is later on the straight circular hole of minor diameter.Interior pipe 10 anterior straight round central holes are established internal thread, are uniformly distributed with a plurality of circular holes 140 on the sidewall of the straight circular hole portion in interior pipe 10 middle parts.In being located at, central nozzle 20 manages in the central hole at 10 tops, in the central mixing chamber 120 of the central ejector that the hole enlargement hole section at pipe 10 middle parts formed in the outlet of central nozzle 20 was stretched into.A plurality of circular holes 140 that central mixing chamber 120 sidewalls are uniformly distributed with are the fluid input first time of central ejector.Central mixing chamber 120 is shunk awl and is exported the central mixing pipe 130 that the straight circular hole of minor diameter that connects interior pipe rear portion becomes central ejector.The outlet 210 of central nozzle 20 is over against the outlet of contraction awl and the central mixing pipe 130 that leave central mixing chamber 120.
The apical pore of adapter sleeve 30 is a main fluid inlet 110; The suit and the interior pipe 10 top cylindricals that are sealedly connected and fixed with one heart in the bottom centre hole of adapter sleeve 30.The extension diameter section that the front end of outer tube 40 is made up of the bigger straight pipe of diameter and the contraction tapering of shrinking gradually backward, half inwardly contraction gradually backward before the narrow tube portion at rear portion later halfly is truncated into straight pipe.Be uniformly distributed with a plurality of second time of fluid input 420 on the straight pipe sidewall of outer tube 40 front end extension diameter sections.Outer tube 40 front end extension diameter sections inlets and connecting sleeve 30 outer walls are concentric to be fixedly connected or to be threaded; The connecting sleeve 30 that pipe 10 and front end thereof connect in making seals and is fixedly connected the front port 410 of outer tube 40, and the narrow tube portion of interior pipe 10 is inserted in the inside contraction section of outer tube 40 narrow tube portions.The looping ejector has the annular mixing chamber 430 of contractile ring awl outlet between the extension diameter section of interior pipe 10 middle parts and outer tube 40, and a plurality of circular holes 140 that constitute the central ejector fluid input first time on the interior pipe 10 are communicated with annular mixing chamber 430 from the inboard.On the outer tube 40 each fluid input 420 for the second time is communicated with annular mixing chamber 430 from the outside.The back taper formula annular mixing tube 440 of the inside contraction of looping ejector between the inwall of the outer wall that inwardly shrink at interior pipe 10 rear portions and the inside contraction section of narrow tube portion of outer tube 40.Its other a kind of distortion is, annular mixing tube 430 has the uniform section runner on axially, and the also optional inlet of perhaps annular mixing tube 430 has the runner in convergent cross section on axially with the annular trunnion in cross section, small larynx footpath or annular mixing tube 430.
Basin shape connecting sleeve 30 goes out to hold center hole periphery diapire as the ring nozzle seat, is uniformly distributed with the oblique spray orifice 310 of at least one circle, and these oblique spray orifices 310 surround the ring nozzle 407 of annular ejector.The main fluid inlet 110 straight-through central nozzle 20 and ring nozzle 407 of basin shape connecting sleeve 30.Referring to Fig. 6; Nozzle ring 407 adopts annular spray nozzle; Each oblique spray orifice 310 outlet is passed through mutually with the annular groove 406 with V-arrangement or U-shaped cross section and is formed V-arrangement or U-shaped spout; Annular groove 406 is provided in a side of at least one circle concentric grooves in adapter sleeve 30 bottoms, and each oblique spray orifice 310 export center is 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 laterally moving of annular mixing tube 440 interior main fluid, helps the diffusion of jet flow in annular mixing tube 440 and is full of.
Perhaps as shown in Figure 7; The structure of the annular spray nozzle that nozzle ring 407-1 adopts is that lopping is uniformly distributed with a plurality of shape holes that are arranged on the nozzle ring seat 30-1; Each shape hole is made of a spray orifice 310-1 and a groove 312, and this groove 312 is the radial wedge grooves at this spray orifice of mistake 310-1 center of in the outlet of this spray orifice 310-1, cutting out.
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 the outer tube 40 from the front portion coaxially.Adjustment connecting sleeve 30 screws in the position of outer tube 40 front ends; Perhaps be provided with and change the pad class controlling mechanism of relative axial position each other at the front port 410 of connecting sleeve 30 and outer tube 40; Can change position in outer tube 40 of central ejector and ring nozzle 407, change the runner latus rectum and the nozzle distance of annular ejector back taper formula annular mixing tube 440, to seek and to regulate the ejector optiaml characteristics parameter that adaptation condition changes.
The part that outer tube 40 is positioned at after annular mixing tube 440 outlets is total output tube that mixes, and always mixes the diminishing backward inner chamber of output tube and constitutes total mixing chamber 450.The straight length inner chamber of total mixing chamber 450 rear ends is total mixing tube 460.
Before the use, should be communicated with time fluid input 420 with external inferior fluid line earlier, be communicated with main fluid inlet 110 with external main fluid conduit.
During work, inferior fluid is sent into time fluid line, main fluid is sent into main fluid conduit.Main fluid is said with time fluid such as last embodiment, repeats no more.
Main fluid from main fluid inlet 110; A part is through the central nozzle on the central ejector 20; Spray to central mixing pipe 130 inlets at a high speed; Entrainment simultaneously from the second time fluid input 420 on annular mixing chamber 430 and central ejector for the first time each circular hole 140 of fluid input get into central mixing chambers 120 by injection time fluid, inferior fluid that feeds central mixing chamber 120 through central nozzle 20 with shrink the periphery that awl exports and be pumped into central mixing pipe 130 by main fluid.Both are mixed, again from central mixing tube 130 terminal output first fluid-mixings in central mixing pipe 130.
The ring nozzle 407 that each the oblique spray orifice 310 that is uniformly distributed with through annular on connecting sleeve 30 diapires from another part of the main fluid of main fluid inlet 110 is formed; Back taper formula annular mixing tube 440 inlets to annular ejector spray working fluid at a high speed; Entrainment simultaneously from the second time fluid input 420 get into annular mixing chamber 430 by injection time fluid, inferior fluid that feeds annular mixing chamber 430 is pumped into the annular mixing tube 440 of back taper formula through the periphery of ring nozzle 407 and the outlet of contractile ring awl by main fluid.Make both in back taper formula annular mixing tube 440 contact heat transfer, mass transfer, all speed, all press, again from back taper formula annular mixing tube 440 terminal second fluid-mixings of exporting.
The second fluid-mixing jet flow of annular mixing tube 440 terminal outputs around the first fluid-mixing jet flow injection of central mixing pipe 130 terminal outputs; Carry out mixing for the third time in the total mixing chamber 450 of common entering and the total mixing tube 460, finally accomplish high pressure main fluid draws low pressure time fluid and carry out the mixed flow conveying.
The reaming resonant cavity 1310 of concentric indent is established in central mixing pipe 130 stage casings, the circular hole footpath＞central mixing pipe 130 outlet sections aperture＞central mixing pipe 130 entrance apertures of resonant cavity 1310.The circular hole length of resonant cavity 1310 is preferably adjustable, and the simplest method is to make the movable exit pipe that is spirally connected with resonant cavity 1310 circular holes to central mixing pipe 130 outlet sections.Rotate this outlet and just can change the length of resonator, produce suitable whirlpool when seeking central mixing pipe mixed flow to mix pulse, and swim the beneficial effect of both direction stack that feedback causes up and down, strengthen whole injector blending ability.
A kind of malformation of present embodiment is: the cancellation of the joint face between the interior pipe 10 of the adapter sleeve 30 of present embodiment and present embodiment, both are become one; Promptly cancel the adapter sleeve 30 of present embodiment, make new interior pipe top expand to present embodiment basin shape adapter sleeve 30 the position and have its shape.So, what sealing was fixedly connected outer tube 40 front end extension diameter sections inlet no longer is the connecting sleeve 30 of present embodiment, but the enlarging outer wall of new interior pipe front end; This moment, ring nozzle was directly arranged on the basin shape chamber base ring wall of new interior pipe top expansion.The working method of obvious this malformation is identical with present embodiment with effect, has just increased the difficulty of processing of new interior pipe.
Three, embodiment three
Referring to Fig. 8, present embodiment and embodiment's two structure is basic identical.Going up among Fig. 8 is actual the place ahead, is actual rear down.This primary and secondary ejector is made up of short and small interior pipe 100, central nozzle 200, connecting sleeve 300, thick long outer tube 400.In pipe 100 form central ejector with central nozzle 200, interior pipe 100, outer tube 400, connecting sleeve 300 are formed annular ejectors.Central authorities' ejector input end is coaxial to be fixed in the annular ejector input end extension diameter section inlet coaxial being suspended in the annular ejector in central ejector posterior segment.The posterior segment that pipe 100 went out end in outer tube 400 was longer than on axially constitutes total output tube that mixes; Total entrance inner chamber that mixes output tube is total mixing chamber 4500, and the convergent footpath inner chamber smooth excessiveness of total mixing chamber 4500 outlets is the diffuser pipe 4700 of 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, their straight-through jointly total mixing chambers 4500, total mixing tube 4600 and diffuser pipe 4700.
The interior pipe 100 of present embodiment is three sections concentric ladder pipes of upper coarse and lower fine undergauge one by one, and its upper end is a big footpath cup-shaped recess 1100, and the endoporus of big footpath cup-shaped recess 1100 is a main fluid inlet 1101; Establish the central nozzle 200 of adjustable upper and lower position in the middle footpath pipe 1001 in its stage casing, middle footpath is managed on the perisporium of 1001 cavity of resorption band contraction mouths and is uniformly distributed with fluid input 1400 for the first time, and the central mixing chamber 1200 that 1001 cavity of resorptions constitute central ejector is managed in middle footpath; In the footpath manage 1001 cavity of resorptions downwards to shrink the path straight tube that extends into be the central mixing pipe 1300 of central ejector.Central nozzle 200 is inserted central mixing chamber 1200 and is aligned the central mixing pipe 1300 that central mixing chamber 1200 cavity of resorption contraction mouths link to each other.Be uniformly distributed with a circle main fluid passageway hole 1600 on big footpath cup-shaped recess 1100 end cross wall of interior pipe 100.
Big footpath cup-shaped recess 1100 suits of interior pipe 100 also are fixed on centre bore 3001 tops in the adapter sleeve 300, and interior pipe 100 seals into an annular chamber with the centre bore 3001 of adapter sleeve 300.In each main fluid passageway hole 1600 on pipe 100 big footpath cup-shaped recess 1100 end cross walls main fluid inlet 1101 is communicated with this annular chamber.The spray orifice 3100,3200 that is distributed in the circle of two on connecting sleeve 300 diapires oblique is formed ring nozzle.Paired oblique spray orifice 3100,3200 can produce the jet flow of bump mutually on this inside and outside circle, 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 that is sandwiched between interior pipe 100 stage casings, 1001 cylindricals and the connecting sleeve 300.
Establish fluid input for the second time on straight pipe 4100 sidewalls of outer tube 400 front end extension diameter sections, one fluid input pipe 4200 of this fluid input installation for the second time.Straight pipe 4100 mouths of pipe of connecting sleeve 300 upper end collar extension sealings and the 400 top hole enlargements of fixed connection outer tube; Connecting sleeve 300 upper end endoporus are threaded with the cylindrical of big footpath, interior pipe 100 upper ends cup-shaped recess 1100; Connecting sleeve 300 lower end center holes 3100 are managed 1001 peripheries with the middle footpath in interior pipe 100 stage casings and can be engaged rotationally and close joining, and the narrow tube portion of interior pipe 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 common looping ejector has the annular mixing chamber 4300 of contractile ring awl outlet between the extension diameter section in the inside contraction section in interior pipe 100 bottoms and outer tube 400 middle parts, and ring nozzle protrudes into annular mixing chamber 4300 on the connecting sleeve 300.In on the pipe 100 central ejector each for the first time fluid input 1400 be communicated with annular mixing chamber 4300 from the inboard.Inferior fluid input pipe 4200 on the outer tube 400 is communicated with annular mixing chamber 4300 from the outside.The annular mixing tube 4400 of looping ejector between the straight pipe portion inwall of the outer wall that inwardly shrink at interior pipe 100 rear portions and the inside contraction section of outer tube 400.Each spray orifice 3100,3200 of ring nozzle is towards annular mixing tube 4400 on the connecting sleeve 300.Export one section annular trunnion that level and smooth straight-through annular mixing tube 4400 entrances have minimum transverse section latus rectum at annular mixing chamber's 4300 conical ring undergauges, straight-through annular mixing tube 4400 back segments that enlarge axial latus rectum gradually of this annular trunnion.
During work, inferior fluid is sent into time fluid input pipe 4200, main fluid is sent into main fluid inlet 1101.Main fluid is said with the selection such as the last embodiment of time fluid, repeats no more.
Main fluid from main fluid inlet 1101; A part is through the central nozzle on the central ejector 200; Spray to central mixing pipe 1300 inlets at a high speed; Entrainment simultaneously from inferior fluid input pipe 4200 on annular mixing chamber 4300 and central ejector for the first time fluid input 1400 get into central mixing chambers 1200 by injection time fluid, inferior fluid that feeds central mixing chamber 1200 through central nozzle 200 with shrink the periphery that awl exports and be pumped into central mixing pipe 1300 by main fluid.Both are mixed, again from central mixing tube 1300 terminal output first fluid-mixings in central mixing pipe 1300.
The ring nozzle of forming through the oblique spray orifice 3100,3200 of two circles that is uniformly distributed with on the connecting sleeve 300 base ring walls from another part of the main fluid of main fluid inlet 1101; Annular mixing tube 4400 inlets to annular ejector spray working fluid at a high speed; Entrainment simultaneously from inferior fluid input pipe 4200 get into annular mixing chamber 4300 by injection time fluid, inferior fluid that feeds annular mixing chamber 4300 is bored the periphery that exports through ring nozzle and contractile ring and is pumped into annular mixing tube 4400 by main fluid.Make both in annular mixing tube 4400 contact heat transfer, mass transfer, all speed, all press, again from back taper formula annular mixing tube 4400 terminal output second fluid-mixings.
The second fluid-mixing jet flow of annular mixing tube 4400 terminal outputs around the first fluid-mixing jet flow injection of central mixing pipe 1300 terminal outputs; The common entering in total mixing chamber 4500 and the total mixing tube 4600 mixed for the third time, and from flaring diffuser pipe 4700 outputs directly.The final high pressure main fluid draws low pressure time fluid of accomplishing carries out the mixed flow conveying.
The big footpath of adjustment cup-shaped recess 1100 screws in the position of connecting sleeve 300; Can change the axial position of pipe 100 in annular ejector in the central ejector; Thereby change annular mixing tube 4400 runner latus rectum and ring nozzle spray orifice 3100,3200 to the nozzle of annular mixing tube 4400 inlets apart from and 1300 outlets of central mixing pipe to the spout distance of total mixing chamber 4500 inverted cones outlet, to seek and to regulate the ejector optiaml characteristics parameter that adaptation condition changes.
When the present embodiment main fluid was used liquid, nozzle ring can adopt annular spray nozzle, is uniformly distributed with like lopping on adapter sleeve 300 diapires a plurality of spray nozzles with swirling flow atomizing core are set.Or nozzle ring can adopt branch two circle to be uniformly distributed with the collision jet spray nozzle that is arranged in pairs on adapter sleeve 300 diapires (being the nozzle ring seat), like many annular spray nozzles to spray orifice 3100,3200 with the collision jet that crosses one another.Although the ring leading to the spray nozzle ejector output pressure is reduced, but it will enable the mainstream physical adhesion, carrying more secondary fluid, make the primary and secondary contact between the fluid from the bus, began mixing and more uniform closely, which can shorten the length of the ejector picture and add specific functions, such as dust, rapid evaporation, rapid cooling and so on.This is applicable to the occasion that requires high mass ratio of induced-to-inducing air not require high output pressure with accelerating heat and mass speed very much.
The above is merely preferred embodiment of the present invention, does not limit the scope that the present invention implements with this, and the equivalence of doing according to technological scheme of the present invention and description changes and modification, all should belong to the scope that the present invention is contained.
Claims (11)
1. primary and secondary ejector, it is characterized in that: its central ejector is arranged in the annular ejector coaxially, common total mixing chamber and the total mixing tube of being communicated with of both outlets; The part of main fluid is sprayed to the central mixing tube inlet from central ejector top through central nozzle, and the injection inferior fluid that inlet gets into the central mixing chamber from annular ejector upper side position gets into together in the central mixing pipe and mixes; Another part of main fluid sprays to annular mixing tube inlet from the annular ejector top through ring nozzle, and the injection inferior fluid that inlet gets into annular mixing chamber from annular ejector upper side position gets into together in the annular mixing tube and mixes; The outlet jet flow of central mixing pipe total mixing tube of the annular common entering of mixing tube outlet jet flow around the injection in total mixing chamber mixes for the third time, accomplishes the mixed flow of high pressure main fluid draws low pressure time fluid and carries.
2. primary and secondary ejector according to claim 1; It is characterized in that: described central ejector input end is coaxial to be fixed in the described annular ejector input end extension diameter section inlet, in the said central ejector, back segment is coaxial is suspended in the described annular ejector; It is central that described central ejector output terminal spout is enclosed in described annular ejector output terminal, their straight-through jointly described total mixing chamber and described total mixing tubes;
Said central ejector comprises the central nozzle and the stair-stepping interior pipe of coaxial package; This central nozzle is located at the inlet of pipe middle part hole enlargement inner chamber in this, and this hole enlargement inner chamber forms described central mixing chamber, and said central mixing chamber sidewall is uniformly distributed with time fluid input; Should interior pipe back segment be the said central mixing pipe of path; Said central nozzle goes out end and aligns the contraction conical outlet of said central mixing chamber and level and smooth with it straight-through said central mixing pipe;
Said annular ejector is made up of above-mentioned interior pipe, connecting sleeve and the stepped outer tube of coaxial package; This outer tube front end extension diameter section port is connected with this connecting sleeve is concentric, above-mentioned in the pipe and the endoporus fixed seal connection of this connecting sleeve, make above-mentioned in coaxial this outer tube central authorities that are suspended at of pipe; Annular chamber between this outer tube front end extension diameter section endoporus and this connecting sleeve outer wall and the above-mentioned interior pipe middle part outer wall forms described annular mixing chamber; This connecting sleeve and above-mentioned in be positioned at the part looping nozzle carrier of said annular mixing chamber apical ring wall between the pipe, the hole of lopping or groove or seam or its constitute described ring nozzle on this ring nozzle seat; Annular chamber between next section endoporus of this outer tube front end extension diameter section and the above-mentioned interior pipe rear portion outer wall constitutes described annular mixing tube; The outlet of said ring nozzle is shunk conical ring outlet and the said annular mixing tube smoothly straight-through with this conical ring outlet over against said annular mixing chamber;
The main fluid inlet of being located at said central ejector center of top is communicated with said central nozzle and said ring nozzle respectively; The inferior fluid input of said annular ejector is located on the outer side wall of said annular mixing chamber, and the inferior fluid input of said central mixing chamber is distributed on the perisporium of said central mixing chamber and by described annular mixing chamber and centers on;
Manage out in outer axial tube upwards is longer than end in, back segment constitutes said total mixing chamber in band convergent footpath and said total mixing tube of straight length in order.
3 according to claim 2, wherein the ejector picture, wherein: said inner tube into the inlet end of said main body enlarged diameter circular cascade peripheral units, the steps of the secondary expanding frustum both radially around the circular table communicating with the main body fabric of the primary fluid inlet communicating hole, the diameter-enlarged frustum rung uniform vertical views of fluid around the through hole, the second fluid, and the main body through-holes each hole misalignment isolation; the rung enlarged diameter circle diameter NTU section is connected to said seal holder kit, the two nozzles together to form said annular seat and said annular nozzle fixed to said connection sleeve closed end of the outer tube in the enlarged diameter section of the inlet port; The primary fluid inlet through said central nozzle and through said periphery of the inner tube into the end stage of the cascade of the enlarged diameter circular main body communication hole communicating said annular nozzle; wherein there are two secondary fluid inlet, one kind is provided in the side wall of the annular mixing chamber and said mixing chamber wall around the center, and both connected to each other; other end of said inner tube into the enlarged diameter of the stepped vertical uniformly distributed around the circular table and the mixing chamber through the top wall of said annular secondary fluid inlet holes.
4. primary and secondary injector according to claim 2 is characterized in that: described straight-through described central nozzle of main fluid inlet and described nozzle ring; Said outer tube front end extension diameter section inlet and basin shape adapter sleeve outer wall be concentric fixedlys connected or is threaded, and this basin shape connection is extracted and held centre bore periphery diapire as described nozzle ring seat, establishes described nozzle ring on it; Described nozzle ring is suspended from the described annular mixing chamber and over against described annular mixing chamber and exports and described annular mixing tube; The centre bore of this basin shape adapter sleeve and said interior concentric being tightly connected of tube inlet section cylindrical, perhaps the centre bore of this basin shape adapter sleeve directly extends described interior pipe downwards, and promptly basin shape adapter sleeve and described interior pipe are integral piece; Tube inlet is established described central nozzle in said.
5. primary and secondary ejector according to claim 2; It is characterized in that: pipe is the ladder pipe of the big footpath of upper end band cup-shaped recess in described; The endoporus of wherein big footpath cup-shaped recess is described main fluid inlet; The cylindrical of big footpath cup-shaped recess is threaded in the described connecting sleeve; The said connecting sleeve upper end collar extension and the said outer tube top hole enlargement mouth of pipe are fixed, and the bottom of said connecting sleeve inverted cone is suspended in the said annular mixing chamber of said outer tube top hole enlargement tube chamber formation, said connecting sleeve lower end center hole and said interior pipe stage casing close joining of cylindrical; In said, be uniformly distributed with a circle main fluid passageway hole at the bottom of the cup-shaped recess of the big footpath of pipe on the cross wall, above-mentioned main fluid passageway hole makes described main fluid inlet be communicated with the annular chamber of said connecting sleeve diapire top sealing; Each spray orifice of said ring nozzle is distributed on the said connecting sleeve annular bottom wall, or said ring nozzle be located at be sandwiched in said between pipe stage casing cylindrical and the said connecting sleeve independently on the ring nozzle seat; Establish described time fluid input on the described annular mixing chamber sidewall.
6. primary and secondary ejector according to claim 2 is characterized in that: described annular mixing tube is uniform section runner or convergent cross section runner are arranged on axially and to be to going out to hold the back taper formula annular mixing tube of undergauge gradually.
7. primary and secondary ejector according to claim 2 is characterized in that: described ring nozzle is the narrow annular channel on the ring nozzle seat; Or said ring nozzle is for being many straight trough/skewed slots that are uniformly distributed with of ring configuration around the ring nozzle seat; Or a plurality of straight circular hole/oblique circular hole of said ring nozzle on the ring nozzle seat, being the circle distribution; Annular recess with auspicious circle on the outlet of above-mentioned each circular hole and the said ring nozzle seat passes through mutually; This annular recess is located at this ring nozzle seat and is gone out on the end face, and has V-arrangement or channel section.
8. primary and secondary injector according to claim 2 is characterized in that: described nozzle ring adopts annular spray nozzle; The structure of this annular spray nozzle is that lopping is uniformly distributed with a plurality of shape holes that are arranged on the said nozzle ring seat, and each shape hole is made of a spray orifice and a groove, and this groove is the radial wedge groove of this orifice center of mistake of in the outlet of this spray orifice, cutting out; Structure that perhaps should the annular spray nozzle is that lopping is uniformly distributed with a plurality of spray nozzles with swirling flow atomizing core that are arranged on the said nozzle ring seat; Structure that perhaps should the annular spray nozzle is that lopping is arranged on many to having the spray orifice of the collision jet that crosses one another on the said nozzle ring seat.
9. primary and secondary ejector according to claim 2; It is characterized in that: the annular mixing tube of said annular ejector is provided with one section annular trunnion; This annular trunnion has minimum transverse section latus rectum in the said annular mixing tube runner whole process; The conical ring undergauge that this annular trunnion is located at said annular mixing chamber goes out end, the straight-through annular mixing tube that enlarges axial latus rectum gradually of this annular trunnion.
10. primary and secondary ejector according to claim 2; It is characterized in that: the said central mixing pipe stage casing of said central ejector is established concentric inner cavity and is formed resonant cavity; Resonant cavity aperture＞central mixing pipe outlet aperture＞central mixing tube inlet aperture, this resonance lumen pore axial length is adjustable.
11. based on each described primary and secondary injector among the claim 1-10; It is characterized in that: between described central injector and described annular ejector, be provided with and change spiral, the pad class governor motion of relative axial position each other, perhaps between the outer tube of described central injector and described nozzle ring and described annular ejector, be provided with and change spiral, the pad class governor motion of relative axial position each other; To change the nozzle distance or the annular mixing tube cross section of fluid channel of total injector and annular ejector, to obtain the good injector structural parameters of adaptation condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110255518.6A CN102678635B (en) | 2011-08-31 | 2011-08-31 | Primary-secondary ejector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110255518.6A CN102678635B (en) | 2011-08-31 | 2011-08-31 | Primary-secondary ejector |
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| CN102678635B CN102678635B (en) | 2014-09-10 |
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| WO2013029475A1 (en) * | 2011-08-31 | 2013-03-07 | Han Tiefu | Composite jet mixer |
| CN103115027A (en) * | 2013-02-05 | 2013-05-22 | 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. |
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| WO2013029475A1 (en) * | 2011-08-31 | 2013-03-07 | Han Tiefu | Composite jet mixer |
| CN103115027A (en) * | 2013-02-05 | 2013-05-22 | 中国人民解放军国防科学技术大学 | Supersonic velocity circular flow nozzle with injector |
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| CN102678635B (en) | 2014-09-10 |
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