CN105174336A - Ejector used for seawater desalination device - Google Patents
Ejector used for seawater desalination device Download PDFInfo
- Publication number
- CN105174336A CN105174336A CN201510695659.8A CN201510695659A CN105174336A CN 105174336 A CN105174336 A CN 105174336A CN 201510695659 A CN201510695659 A CN 201510695659A CN 105174336 A CN105174336 A CN 105174336A
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- China
- Prior art keywords
- nozzle
- suction chamber
- undergauge
- expanding
- secondary nozzle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Jet Pumps And Other Pumps (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to an ejector used for a seawater desalination device. The ejector mainly comprises a primary nozzle, a secondary nozzle and a diffusion tube, which are coaxially communicated, wherein a primary suction chamber and a secondary suction chamber are respectively connected outside the primary nozzle and the secondary nozzle in a sleeving manner; the primary nozzle and the secondary nozzle are provided with flowing space similar to a cone; a reducing end of the primary nozzle extends into an expanding end of the secondary nozzle; the primary suction chamber and the secondary suction chamber are two hollow chambers which are independent of each other and are sequentially connected outside the primary nozzle and the secondary nozzle in a sleeving manner; material suction inlets are reserved in the primary suction chamber and the secondary suction chamber respectively; the diffusion tube is provided with flowing space used for materials to circulate from the side of a cylinder end to the side of the expanding end; and the cylinder end of the diffusion tube passes through the secondary suction chamber and is dead against an outlet of a reducing end of the secondary nozzle. Compared with the traditional equipment, the ejector has the advantages of structure simplification, size reduction, fault rate reduction, cost reduction and energy consumption reduction.
Description
Technical field
The present invention relates to a kind of second injector that can extract steam simultaneously and manufacture vacuum and extract unnecessary seawater, be exclusively used in vacuum distilling formula marine desalination equipment.This special-purpose ejecting device belongs to component and the jet apparatus technical field of ship's fitting.
Background technology
The sea water desalinating plant that oceangoing vessel uses generally adopts vacuum distillation technique, and it is based on the boiling point lowering principle of water under vacuum environment.Traditional sea water desalinating plant structural principle as shown in Figure (1) shows.Still-process needs to keep carrying out in the enclosed space D of more than 90% vacuum tightness at one.Sea-water pump A export containing sea brine, enter enclosed space D from original water inlet I, by heating of seawater to 40 DEG C ~ 50 DEG C, there is boiling and form steam in well heater F, more cooled device E condensation, obtains the fresh water that saliferous rate is very low, be pumped out from water outlet IV.Manufacture the fresh water of 1 unit, need the seawater supplementing 3 ~ 6 times from original water inlet I, unnecessary seawater must export II from strong brine and extract.Traditional sea water desalinating plant needs two single-stage injectors, and injector B is used for extracting steam and manufactures vacuum environment, and injector C is used for extracting unnecessary seawater.Single-stage injector B and C is based on venturi principle, the pressure energy of actuating fluid is converted into the kinetic energy sucking fluid.Use the sea water desalinating plant pipeline structure more complicated of two single-stage injectors, equipment needs the space that takies larger.Two single-stage injectors all may break down, and cause the failure rate of equipment higher.Meanwhile, two single-stage injectors need two-way to drive water, and the pressure difference of injector import and outlet is on the low side, and the utilization ratio of pressure energy is not high, causes the energy consumption of equipment higher.In addition, the manufacturing cost of two injectors is higher.The limited space in oceangoing vessel cabin, so wish that equipment size is little as far as possible, and on long voyage, sea water desalinating plant needs work every day, therefore the good stability of equipment, failure rate is low is needed, simultaneously because the various uncertainty and risks of oceangoing voyage exist, so the energy consumption of ship's machinery is lower, be more conducive to the oceangoing voyage ability improving ship.
Summary of the invention
The object of the invention is to overcome above-mentioned technical disadvantages, the sea water desalinating plant injector that a kind of volume is little, Stability Analysis of Structures, energy consumption are low is provided.
Technical scheme disclosed by the invention is: a kind of sea water desalinating plant injector, primarily of the first order jet nozzle of coaxial communication, secondary nozzle and diffuser tube composition, one-level suction chamber, secondary suction chamber is socketed with respectively in the outside of first order jet nozzle and secondary nozzle, wherein: first order jet nozzle and secondary nozzle all have the fluid-space for the approximate circular cone making material circulate from expanding side to undergauge side, the undergauge end of first order jet nozzle stretches in the expanding end of secondary nozzle; One-level suction chamber and secondary suction chamber are two hollow chamber separate, order is socketed in first order jet nozzle and secondary nozzle outside, one-level suction chamber and secondary suction chamber are reserved with material suction port respectively, and wherein the two ends of one-level suction chamber seal fixing respectively with the expanding end of first order jet nozzle, the expanding end of secondary nozzle; One end of secondary suction chamber and the expanding end of secondary nozzle seal fixing, in the undergauge end of secondary nozzle is wrapped in by its other end; Diffuser tube has for making material from the fluid-space of cylinder end side direction expanding side circulation, and the cylinder end of diffuser tube passes secondary suction chamber just to the outlet of secondary nozzle undergauge end.
The principle of this injector is: be disposed in series in same injector by two diminishing nozzles of internal diameter, two corresponding two suction ports of nozzle and two suction chambers.High drive water forms injection stream by first order jet nozzle, thus forms vacuum at one-level suction chamber, can from one-level suction port aspirate excess seawater.Drive water and one-level to be re-used as the actuating fluid of second injector by the fluid that the gas taken out or liquid mixing are formed, by secondary nozzle, again form injection stream, form vacuum at two suction chambers, thus can from secondary suction port draws vapor.The mixed stream formed by the unnecessary seawater of steam driving water and two-stage to suck, through the diffuser tube that internal diameter expands gradually, speed reduces, pressure recovery normal pressure, discharges finally by injector outlet.
The technical scheme that the present invention limits further is:
Further, first order jet nozzle undergauge end comprises the undergauge end and secondary undergauge end that end expanding with it be linked in sequence, the axial length of a undergauge end is greater than the length of secondary undergauge end, the large end internal diameter of secondary undergauge end equals the internal diameter of a undergauge end small end, and a undergauge end large end external diameter is not more than the internal diameter of the large end of the expanding end of secondary nozzle, arranging one large, little two undergauge ends is reach higher jet velocity to the seawater of suction be carried out twice acceleration to what make it smooth-going.
Further, the opening direction of the material suction port on one-level suction chamber and secondary suction chamber is perpendicular to the axis of first order jet nozzle, secondary nozzle, and this is to ensure that material can be more prone to be inhaled into.
Further, the diameter reducing rate of a undergauge end is less than the diameter reducing rate of secondary undergauge end, secondary undergauge end stretches in the expanding end of secondary nozzle, such setting is to ensure: slowly accelerate in the undergauge end that seawater elder generation is longer at axial distance, diameter reducing rate is little, enter afterwards in the secondary undergauge end that axial distance is short, diameter reducing rate is large and be rapidly accelerated to required jet velocity.(note: the angle of diameter reducing rate herein between inwall and axis represents.）
Further, the outer wall of expanding end, the outer wall of the expanding end of secondary nozzle seal fixing with first order jet nozzle respectively at the two ends of one-level suction chamber; The outer wall of one end of secondary suction chamber and the expanding end of secondary nozzle seals fixing, in the undergauge end of secondary nozzle is wrapped in by its other end; Diffuser tube has for making material from the fluid-space of cylinder end side direction expanding side circulation, and the cylinder end of diffuser tube passes secondary suction chamber just to the outlet of secondary nozzle undergauge end.
The present invention's secondary special-purpose ejecting device replaces two single-stage injectors, and meet the function needs extracting steam and manufacture vacuum and extract unnecessary seawater, sea water desalinating plant structure is simplified, and integrated level improves, and the probability broken down reduces simultaneously.This special-purpose ejecting device decreases a suction chamber and a diffuser tube than original two single-stage injectors simultaneously, and therefore manufacturing cost also reduces.In addition, this special-purpose ejecting device only needs a road to drive water, and the mixed stream that first order jet nozzle exports is as the driving medium of secondary, and make the pressure difference of injector import and outlet higher, pressure energy is fully utilized, and reduces the energy consumption of equipment.
Accompanying drawing explanation
Fig. 1 is the sea water desalinating plant structure principle chart that tradition joins two single-stage injectors;
Fig. 2 is special-purpose ejecting device structure principle chart of the present invention;
Fig. 3 is the sea water desalinating plant structure principle chart adopting special-purpose ejecting device of the present invention.
Embodiment
embodiment 1
Below in conjunction with accompanying drawing, the present invention is described in further detail:
The present invention relates to a kind of second injector that can extract steam simultaneously and manufacture vacuum and extract unnecessary seawater, be exclusively used in vacuum distilling formula marine desalination equipment.The structural principle of this special-purpose ejecting device as shown in Figure 2, be made up of main suction chamber A, first order jet nozzle B, secondary nozzle C, secondary suction chamber D and diffuser tube E, wherein be provided with a undergauge end B1 and secondary undergauge end B2 in one-level spray jet B, be not difficult to find out from figure, the diameter reducing rate of a undergauge end B1 is significantly less than the diameter reducing rate of secondary undergauge end B2, and the angle between diameter reducing rate inwall herein and axis is measured.
High drive water enters injector from import I, is compressed by the diminishing undergauge end B1 of internal diameter and secondary undergauge end B2, and flow velocity increases, and forms injection stream.One-level suction chamber A communicates with one-level suction port III, seals with the left side outside wall surface of first order jet nozzle B, seals with the left end outside wall surface of secondary nozzle C simultaneously.Based on venturi principle, the jet that secondary undergauge end B2 exports forms vacuum at one-level suction chamber A, can suck unnecessary seawater from one-level suction port III.The large end internal diameter of secondary nozzle C is greater than the large end external diameter of a undergauge end B1, and has a bit of overlap.The jet that first order jet nozzle B exports, before not contacting secondary nozzle C inner-wall surface, naturally is dispersed, is mixed gas or the liquid of suction, mixed stream enlargement in section simultaneously, flow velocity reduction, and pressure rises gradually, is equivalent to an inner single-stage injector.
Mixed stream as the actuating fluid of the second stage, is compressed by internal diameter diminishing taper secondary nozzle C simultaneously, forms injection stream.Secondary suction chamber D communicates with secondary suction port IV, isolates with one-level suction chamber.Based on venturi principle, the jet that secondary nozzle C exports forms vacuum again at secondary suction chamber, can suck steam from secondary suction port IV.The steam driving water and I and II to suck and unnecessary sea water mixing, finally by the conic diffuse E that internal diameter expands gradually, speed reduces, and pressure also recovers normal pressure, discharges, be equivalent to second interior injectors from outlet II.
Adopt the sea water desalinating plant structural principle of this special-purpose ejecting device as shown in Figure 3.The sea brine that contains of sea-water pump outlet enters injector from injection import, and extract the unnecessary seawater of enclosed space from one-level suction port, extract steam simultaneously, in closed environment, manufacture vacuum from secondary suction port, mixed stream is finally discharged from injector outlet.Visible, two single-stage injectors are integrated into a second injector by the present invention, make an ejector for two functions, and a road drives water by twice utilization, and injector integrated level improves, and structure simplifies, and capacity usage ratio is high, and part reduces, and cost reduces.Simultaneously this special-purpose ejecting device is identical with the principle of work of single-stage injector, the influence factor of major failure unanimously, so use the sea water desalinating plant probability of malfunction of this special-purpose ejecting device to be the half of use two single-stage injector probabilities of malfunction.
In sum, adopt sea water desalinating plant structure of the present invention to simplify, take up room little, failure rate is low, energy consumption is low, and cost reduces.
The sea water desalinating plant of corresponding different model, the flow needing steam and the unnecessary seawater extracted is different.Special-purpose ejecting device of the present invention can adjust first order jet nozzle B, secondary nozzle C and diffuser tube E internal diameter, injector import and outlet size and I and II suction chamber size, forms sizes combination, meets the flow needs of different model sea water desalinating plant.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (5)
1. a sea water desalinating plant injector, primarily of the first order jet nozzle of coaxial communication, secondary nozzle and diffuser tube composition, one-level suction chamber, secondary suction chamber is socketed with respectively in the outside of described first order jet nozzle and secondary nozzle, it is characterized in that: described first order jet nozzle and secondary nozzle all have the fluid-space for the approximate circular cone making material circulate from expanding side to undergauge side, the undergauge end of described first order jet nozzle stretches in the expanding end of described secondary nozzle; Described one-level suction chamber and secondary suction chamber are two hollow chamber separate, order is socketed in described first order jet nozzle and secondary nozzle outside, described one-level suction chamber and secondary suction chamber are reserved with material suction port respectively, and the two ends of wherein said one-level suction chamber seal fixing respectively with the expanding end of described first order jet nozzle, the expanding end of secondary nozzle; One end of described secondary suction chamber and the expanding end of secondary nozzle seal fixing, in the undergauge end of described secondary nozzle is wrapped in by its other end; Described diffuser tube has for making material from the fluid-space of cylinder end side direction expanding side circulation, and the cylinder end of described diffuser tube passes described secondary suction chamber just to the outlet of secondary nozzle undergauge end.
2. sea water desalinating plant injector according to claim 1, it is characterized in that: described first order jet nozzle undergauge end comprises the undergauge end and secondary undergauge end that end expanding with it be linked in sequence, the axial length of a described undergauge end is greater than the length of secondary undergauge end, the large end internal diameter of described secondary undergauge end equals the internal diameter of a undergauge end small end, and a described undergauge end large end external diameter is not more than the internal diameter of the large end of the expanding end of described secondary nozzle.
3. sea water desalinating plant injector according to claim 1, is characterized in that: the opening direction of the material suction port on described one-level suction chamber and secondary suction chamber is perpendicular to the axis of described first order jet nozzle, secondary nozzle.
4. sea water desalinating plant injector according to claim 2, is characterized in that: the diameter reducing rate of a described undergauge end is less than the diameter reducing rate of described secondary undergauge end, and secondary undergauge end stretches in the expanding end of described secondary nozzle.
5. sea water desalinating plant injector according to claim 1, is characterized in that: the two ends of described one-level suction chamber seal fixing respectively with the outer wall of the expanding end of described first order jet nozzle, the outer wall of the expanding end of secondary nozzle; One end of described secondary suction chamber and the outer wall of the expanding end of secondary nozzle seal fixing, in the undergauge end of described secondary nozzle is wrapped in by its other end; Described diffuser tube has for making material from the fluid-space of cylinder end side direction expanding side circulation, and the cylinder end of described diffuser tube passes described secondary suction chamber just to the outlet of secondary nozzle undergauge end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695659.8A CN105174336A (en) | 2015-10-21 | 2015-10-21 | Ejector used for seawater desalination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695659.8A CN105174336A (en) | 2015-10-21 | 2015-10-21 | Ejector used for seawater desalination device |
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| Publication Number | Publication Date |
|---|---|
| CN105174336A true CN105174336A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510695659.8A Pending CN105174336A (en) | 2015-10-21 | 2015-10-21 | Ejector used for seawater desalination device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519504A (en) * | 2016-11-08 | 2017-03-22 | 江苏润海能源科技有限公司 | Nozzle of seawater desalting device |
| CN114832576A (en) * | 2022-04-08 | 2022-08-02 | 中南大学 | Multi-stage injection type molecular sieve purifier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2348163Y (en) * | 1998-04-24 | 1999-11-10 | 王修同 | Two-stage sucking pump for water pump |
| JP2001259583A (en) * | 2000-03-16 | 2001-09-25 | Matsushita Electric Ind Co Ltd | Garbage disposal device |
| CN101113743A (en) * | 2007-08-30 | 2008-01-30 | 上海汉盛船舶技术有限公司 | Squirtpump special for vacuum distillation type sea water desalting apparatus for ship |
| CN104454670A (en) * | 2014-10-22 | 2015-03-25 | 江苏振华泵业制造有限公司 | Vapor-liquid mixed-pumping type injection pump |
| CN205099393U (en) * | 2015-10-21 | 2016-03-23 | 南京中船绿洲环保有限公司 | Sprayer for sea water desalination device |
-
2015
- 2015-10-21 CN CN201510695659.8A patent/CN105174336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2348163Y (en) * | 1998-04-24 | 1999-11-10 | 王修同 | Two-stage sucking pump for water pump |
| JP2001259583A (en) * | 2000-03-16 | 2001-09-25 | Matsushita Electric Ind Co Ltd | Garbage disposal device |
| CN101113743A (en) * | 2007-08-30 | 2008-01-30 | 上海汉盛船舶技术有限公司 | Squirtpump special for vacuum distillation type sea water desalting apparatus for ship |
| CN104454670A (en) * | 2014-10-22 | 2015-03-25 | 江苏振华泵业制造有限公司 | Vapor-liquid mixed-pumping type injection pump |
| CN205099393U (en) * | 2015-10-21 | 2016-03-23 | 南京中船绿洲环保有限公司 | Sprayer for sea water desalination device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519504A (en) * | 2016-11-08 | 2017-03-22 | 江苏润海能源科技有限公司 | Nozzle of seawater desalting device |
| CN114832576A (en) * | 2022-04-08 | 2022-08-02 | 中南大学 | Multi-stage injection type molecular sieve purifier |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |