CN106064122A - Sawtooth injecting type evacuation - Google Patents
Sawtooth injecting type evacuation Download PDFInfo
- Publication number
- CN106064122A CN106064122A CN201510198077.9A CN201510198077A CN106064122A CN 106064122 A CN106064122 A CN 106064122A CN 201510198077 A CN201510198077 A CN 201510198077A CN 106064122 A CN106064122 A CN 106064122A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- sawtooth
- section
- supersonic speed
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a kind of supersonic speed sawtooth nozzle and the sawtooth injecting type evacuation device of this nozzle is installed.Described supersonic speed sawtooth nozzle includes entrance, nozzle throat, jet expansion section and the triangle of jet expansion trailing edge or recessed fan-shaped correction of the flank shape.The described sawtooth injecting type evacuation device being provided with supersonic speed sawtooth nozzle includes: 1) mainstream fluid entrance section；2) supersonic speed sawtooth nozzle；3) suction chamber and the secondary inflow entrance that is connected with suction chamber；4) mixing diffusion room.Mixing diffusion room includes: 1) mixing section, is made up of two parts, and one is intake section, and two is contraction section；2) throat；3) diffuser.The present invention has high mass ratio of induced-to-inducing air and work efficiency in mechanism and effect, can be with accompanied by substantial power saving.
Description
Technical field
The invention belongs to the industry device technical fields such as oil, petrochemical industry, chemical industry, metallurgy, electric power, refrigeration, pharmacy, desalinization, specifically relate to
And a kind of supersonic speed sawtooth nozzle for producing vacuum and sawtooth injecting type evacuation thereof.
Additionally, the present invention relates to a kind of liquid-jet vacuum pump producing vacuum.
Additionally, the present invention relates to ejector or the ejector pump of a kind of conveyance fluid.
Background technology
Evacuation is by the fluid media (medium) (referred to as main flow) of certain pressure and temperature, enters mixing after Lavalle (Laval) nozzle decompressing speed-increasing
Diffusion room, carries out energy exchange with the fluid (the most secondary stream) taken out and mixes in mixing diffusion room, and carries by withdrawing fluid in mixing diffusion room
Interior deceleration, mixing, supercharging, finally overcome outlet back pressure to discharge, thus reaches extraction or the purpose of conveying time stream.In actual production, main flow is situated between
What matter was conventional is water vapour, so being commonly referred to as water vapour evacuation, steam ejector, Steam Jetting Vacuum System in engineering.
Evacuation have simple in construction, do not have movement parts, stable and reliable in work, install and use that maintenance is simple, rate of air sucked in required is very big, can extract out and contain
The feature of the fluids such as a large amount of water vapour, dust, granules, maximum can be that technique provides the vacuum environment being typically no less than 1.33-0.13Pa absolute pressure,
It is one of field key equipments such as oil, chemical industry, metallurgy, electric power, machinery, refrigeration, desalinization, pharmacy and military project.Although evacuation is tied
Structure is fairly simple, but flow field complicated mechanism in evacuation, and its pumping theory and method for designing etc. are not perfect.
The Laval nozzle structure that water vapour evacuation uses at present, pumpage is little, steam consumption is big, efficiency is low, noise is big, is to produce dress
Put one of big power consumer.The work efficiency of evacuation depends primarily on two aspects: one, is also of paramount importance, has been energy conversion, has produced
The nozzle arrangements form of raw vacuum；Its two, the runner form of the evacuation matched with nozzle.
In the prior art, Authorization Notice No. is that the patent of CN201949953U discloses a kind of energy-efficient nozzle and is provided with the steaming of this nozzle
Vapour ejector pump, this kind of nozzle is the target by using nozzle straight length to strive for reducing steam consumption.
In the prior art, Authorization Notice No. is that the patent of CN2475476Y discloses a kind of injector nozzle, and this kind of injector nozzle is by adopting
Realize reducing the target of steam consumption with variable nozzle throat sectional area.The big then steam consumption of nozzle throat diameter is big, nozzle throat diameter
Little then steam consumption is little, but this kind of version simply facilitates regulation load, does not has the mass ratio of induced-to-inducing air of Improvement steam jet ejector and evacuates effect
Rate.
Summary of the invention
The main object of the present invention is to increase substantially evacuation mass ratio of induced-to-inducing air and work efficiency from mechanism and effect, has invented a kind of supersonic speed saw
Tooth nozzle and sawtooth injecting type evacuation device thereof, replace the most a large amount of Laval nozzle evacuation used, and improves mainstream fluid ejection from mechanism
The flowing of nozzle and distributional pattern, and be sucked fluid flowing in mixing diffusion room and distributional pattern, the main flow of evacuation is greatly reduced
The consumption of fluid, reduces aerodynamic noise.
The present invention it is still a further object to provide the liquid-jet vacuum pump of a kind of generation vacuum matched with supersonic speed sawtooth nozzle.
The present invention it is still a further object to provide ejector or the ejector pump of a kind of conveyance fluid matched with supersonic speed sawtooth nozzle.
According to embodiments of the present invention, the supersonic speed sawtooth nozzle that a kind of working medium is fluid is disclosed, including 3 parts: 1) nozzle entrance section (figure
Symbol 1 in 1)；2) nozzle throat (symbol 2 in Fig. 1)；3) jet expansion section (symbol 3 in Fig. 1).These 3 parts are sequentially connected with, shape
Become complete sawtooth nozzle arrangements.
The entrance streamwise cross-sectional area of sawtooth nozzle is gradually reduced, and its wall molded line is tapered tube configuration or preferable Vito this fundamental mode line pungent
Bus axial symmetry convergence structure or with Vito this fundamental mode line pungent circular arc line, hyperbola or parabola molded line bus structure as prototype.Nozzle throat is
The circular channel of diameter.Jet expansion section is the Lavalle spray of trailing edge sawtooth correction of the flank shape (symbol 4 in Fig. 1) or recessed fan correction of the flank shape (symbol 4 in Fig. 2)
Mouth expansion segment.
Trailing edge sawtooth correction of the flank shape (symbol 4 in Fig. 1) is the most equal or unequal cutting in the profile of Laval nozzle expansion segment trailing edge
Fall some pieces of trianglees, the shaped angles of triangle and size can arbitrarily select.
Trailing edge recessed fan correction of the flank shape (symbol 4 in Fig. 2) is the most equal or unequal cutting in the profile of Laval nozzle expansion segment trailing edge
Falling some pieces of recessed sectors, the shape of recessed sector is: circle, ellipse, hyperbola, parabola shaped, trigonometric function shape etc. and theirs is any
Combination, size is any.
One is provided with [009] to [015] described supersonic speed sawtooth nozzle evacuation device, it is characterised in that described sawtooth injecting type evacuation device
Including: 1) mainstream fluid entrance section (symbol 5 in Fig. 3)；2) sawtooth nozzle (symbol 6 in Fig. 3)；3) suction chamber (symbol in Fig. 3
7) the secondary inflow entrance section (symbol 13 in Fig. 3) and with suction chamber being connected；4) mixing diffusion room mixing section (symbol 8 in Fig. 3), it is by two
Being grouped into: one is mixing diffusion room mixing section intake section (symbol 9 in Fig. 3), two is mixing diffusion room mixing section contraction section (symbol in Fig. 3
10)；5) mixing diffusion room throat (symbol 11 in Fig. 3)；6) mixing diffusion room diffuser (symbol 12 in Fig. 3).At described supersonic speed sawtooth
Nozzle (symbol 6 in Fig. 3) is arranged in suction chamber, sawtooth nozzle entrance section (Fig. 1,2 in symbol 1) and mainstream fluid entrance section (figure
Symbol 5 in 3) joint use welding, or gasket seal adds threaded, or gasket seal adds the mode of Flange joint and connects.
One is provided with [009] to [015] described supersonic speed sawtooth nozzle evacuation device, it is characterised in that at described supersonic speed sawtooth nozzle (figure
Symbol 6 in 3) outlet section is trailing edge sawtooth correction of the flank shape (symbol 4 in Fig. 1) or the Laval nozzle expansion segment of recessed fan correction of the flank shape (symbol 4 in Fig. 2).
Compared with prior art, the invention has the beneficial effects as follows: mainstream fluid ramps up in sawtooth nozzle entrance section；Lucky at nozzle throat
Reaching critical state, speed is local velocity of sound；In jet expansion section, supersonic flow continues to expand and accelerates.Tail end section in jet expansion section
On, speed reaches maximum, and pressure minimizes value, thus forms a low-pressure area.Because secondary stream fluid pressure is higher than this low-pressure area pressure, institute
It is drawn in evacuation under the effect of pressure differential with secondary stream fluid.Meanwhile, because the trailing edge correction of the flank shape of the viscous effect of fluid and sawtooth nozzle
Structure, so compared to existing Laval nozzle, sawtooth nozzle downstream mainstream fluid contacts and effective contact area in advance with time stream fluid
Considerably increase, i.e. the active force of dilatory stream of main flow viscosity is greatly improved.It addition, supersonic speed sawtooth jet expansion section trailing edge correction of the flank shape, change master
Nowed forming after stream fluid exiting nozzles and streamline distribution, improve mainstream fluid with by the secondary flow medium flowing shape in mixing diffusion room of injection
State.Finally sawtooth injecting type evacuation mass ratio of induced-to-inducing air and work efficiency is made to be greatly improved from mechanism, so supersonic speed sawtooth injecting type evacuation can
Under same mainstream fluid mass flow, considerably increase the secondary current mass flow of injection, or greatly reduce under same injection time current mass flow
Mainstream fluid consumption, the highest mass ratio of induced-to-inducing air and work efficiency.
Accompanying drawing explanation
Fig. 1 represents the basic schematic diagram of a kind of supersonic speed sawtooth nozzle front view of embodiment of the present invention.Wherein, in Fig. 1, symbol 1 represents
Nozzle entrance section, in Fig. 1, symbol 2 represents nozzle throat, and in Fig. 1, symbol 3 represents jet expansion section, and in Fig. 1, symbol 4 represents jet expansion section
In the gable that cuts away.
Fig. 2 represents the basic schematic diagram of the second supersonic speed sawtooth nozzle front view of embodiment of the present invention.Wherein, symbol 1 table in Fig. 2
Showing nozzle entrance section, in Fig. 2, symbol 2 represents nozzle throat, and in Fig. 2, symbol 3 represents jet expansion section, and in Fig. 2, symbol 4 represents jet expansion
The recessed fan part cut away in Duan.
Fig. 3 represents the sawtooth basic schematic diagram of injecting type evacuation being provided with supersonic speed sawtooth nozzle of embodiment of the present invention.Wherein, Fig. 3
Middle symbol 5 represents mainstream fluid entrance section, and in Fig. 3, symbol 6 represents sawtooth nozzle, and in Fig. 3, symbol 7 represents suction chamber, symbol in Fig. 3
8 represent mixing diffusion room mixing section, and in Fig. 3, symbol 9 represents mixing diffusion room mixing section intake section, and in Fig. 3, symbol 10 represents mixing diffusion room
Mixing section contraction section, in Fig. 3, symbol 11 represents mixing diffusion room throat, and in Fig. 3, symbol 12 represents mixing diffusion room diffuser, accords with in Fig. 3
Numbers 13 represent the secondary inflow entrance being connected with suction chamber.
Detailed description of the invention
By 3 parts of sawtooth nozzle in Fig. 1 or Fig. 2: nozzle entrance section (Fig. 1,2 in symbol 1), nozzle throat (Fig. 1,2 in symbol 2),
Jet expansion section (Fig. 1,2 in symbol 3), is sequentially connected with, forms complete supersonic speed sawtooth nozzle arrangements.Then, by complete supersonic speed saw
In tooth nozzle (symbol 6 in Fig. 3) is arranged on suction chamber (symbol 7 in Fig. 3), sawtooth nozzle entrance section (Fig. 1,2 in symbol 1) and main flow
The joint of fluid (such as water vapour, air, process fluid) entrance section (symbol 5 in Fig. 3) uses welding, or gasket seal adds screw thread even
Connect, or gasket seal adds Flange joint；Process unit will need the process pipe being sucked fluid use welding, or gasket seal add threaded,
Or gasket seal adds flange and is connected to time inflow entrance (symbol 13 in Fig. 3)；Will mixing diffusion room diffuser outlet (symbol 12 in Fig. 3) and technique
The process pipe carrying fluid-mixing in device uses welding, or gasket seal adds threaded, or gasket seal adds Flange joint.
It is last it should be understood that above-mentioned each technical scheme, Design and analysis methods and embodiment are embodiments of the present invention and unrestricted, to the greatest extent
The present invention has been described in detail by pipe with reference to embodiment, for those skilled in the art, in principle disclosed by the invention, technical scheme, side
On the basis of method or application etc., it is easy to make various types of amendment, deformation or equivalent, and without departing from the principle of the invention, technical scheme, side
The spirit and scope of method or application etc., it all should be contained in the middle of scope of the presently claimed invention.
Claims (7)
1. the supersonic speed sawtooth nozzle for evacuation, it is characterised in that this nozzle includes 3 parts: nozzle entrance section, nozzle throat, jet expansion section, these 3 parts are sequentially connected with, and form complete supersonic speed sawtooth nozzle arrangements.
2. supersonic speed sawtooth nozzle as claimed in claim 1, it is characterised in that jet expansion section is trailing edge sawtooth correction of the flank shape or the Laval nozzle expansion segment of recessed fan correction of the flank shape.
3. supersonic speed sawtooth nozzle as claimed in claim 1, it is characterised in that the most equal or unequal in the profile of Laval nozzle expansion segment trailing edge cut away some pieces of trianglees, shaped angles and the size of triangle are any.
4. supersonic speed sawtooth nozzle as claimed in claim 1, it is characterized in that, the most equal or unequal in the profile of Laval nozzle expansion segment trailing edge cut away some pieces of recessed sectors, the shape of recessed sector is: circle, ellipse, hyperbola, parabola shaped, trigonometric function shape, asymptotic linear and their combination in any, the size of recessed sector is any.
5. a band is just like the sawtooth injecting type evacuation device of the supersonic speed sawtooth nozzle according to any one of Claims 1-4, it is characterised in that by: 1) mainstream fluid entrance section；2) supersonic speed sawtooth nozzle；3) suction chamber and the secondary inflow entrance that is connected with suction chamber；4) mixing diffusion room composition.
6. device as claimed in claim 5, it is characterised in that mixing diffusion room by: 1) mixing section；2) throat；3) this 3 part of diffuser composition.
7. device as claimed in claim 5, it is characterized in that: supersonic speed sawtooth nozzle is arranged in suction chamber, jet expansion cross section is parallel or not parallel with the mixing section entrance cross-section of mixing diffusion room, design principle is both flow field matchings, preferably, sawtooth injecting type evacuation uses CFD design, makes flow field, mixing diffusion room mate with supersonic speed sawtooth Nozzle Flow Field, reaches maximum draught jet capacity ratio and optimum flow losses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198077.9A CN106064122B (en) | 2015-04-24 | 2015-04-24 | Sawtooth jet type evacuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198077.9A CN106064122B (en) | 2015-04-24 | 2015-04-24 | Sawtooth jet type evacuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106064122A true CN106064122A (en) | 2016-11-02 |
| CN106064122B CN106064122B (en) | 2019-12-24 |
Family
ID=57419720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510198077.9A Expired - Fee Related CN106064122B (en) | 2015-04-24 | 2015-04-24 | Sawtooth jet type evacuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106064122B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348518A (en) * | 2016-11-04 | 2017-01-25 | 北京绿源众邦节能科技有限公司 | Cavitation water liquid state magnetic field purification system |
| CN107489462A (en) * | 2017-09-18 | 2017-12-19 | 中国船舶重工集团公司第七0四研究所 | Sector crosssection superonic flow nozzzle of the turbine along streamline adjacent circumferential expansion |
| CN108050111A (en) * | 2017-08-16 | 2018-05-18 | 山东天境环保科技有限公司 | Multistage multi |
| CN109458274A (en) * | 2018-06-25 | 2019-03-12 | 西北工业大学 | A kind of variable cross-section petaloid mixer-ejector suitable for pulse-knocking engine |
| CN109779788A (en) * | 2018-12-13 | 2019-05-21 | 西安航天动力研究所 | A kind of solution-air coaxial shear formula nozzle based on the design of lip sawtooth |
| CN112118901A (en) * | 2018-06-14 | 2020-12-22 | 斗山能捷斯有限责任公司 | Reactor for cleaning flue gases by dry or quasi-dry adsorption processes |
| CN113164996A (en) * | 2018-07-24 | 2021-07-23 | 卡莱尔液体科技(英国)公司 | Spray gun nozzle |
| DE102020125565A1 (en) | 2020-09-30 | 2022-03-31 | Norma Germany Gmbh | Vehicle drive with vacuum system and ejector |
| CN115234524A (en) * | 2022-07-03 | 2022-10-25 | 中国船舶重工集团公司第七0三研究所 | Detachable low-noise steam jet compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155106A (en) * | 1984-02-29 | 1985-09-18 | Chlorine Eng Corp Ltd | Steam ejector |
| JP2002130200A (en) * | 2000-10-27 | 2002-05-09 | Nippon Steel Corp | Steam ejector for evacuation and control method therefor |
| US6877960B1 (en) * | 2002-06-05 | 2005-04-12 | Flodesign, Inc. | Lobed convergent/divergent supersonic nozzle ejector system |
| CN101660545A (en) * | 2008-08-14 | 2010-03-03 | 通用电气公司 | Ejectors with separably secured nozzles, adjustable size nozzles, or adjustable size mixing tubes |
| CN201827162U (en) * | 2010-10-29 | 2011-05-11 | 国家海洋局天津海水淡化与综合利用研究所 | Steam jetting pump with adjustable nozzle |
-
2015
- 2015-04-24 CN CN201510198077.9A patent/CN106064122B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155106A (en) * | 1984-02-29 | 1985-09-18 | Chlorine Eng Corp Ltd | Steam ejector |
| JP2002130200A (en) * | 2000-10-27 | 2002-05-09 | Nippon Steel Corp | Steam ejector for evacuation and control method therefor |
| US6877960B1 (en) * | 2002-06-05 | 2005-04-12 | Flodesign, Inc. | Lobed convergent/divergent supersonic nozzle ejector system |
| CN101660545A (en) * | 2008-08-14 | 2010-03-03 | 通用电气公司 | Ejectors with separably secured nozzles, adjustable size nozzles, or adjustable size mixing tubes |
| CN201827162U (en) * | 2010-10-29 | 2011-05-11 | 国家海洋局天津海水淡化与综合利用研究所 | Steam jetting pump with adjustable nozzle |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348518A (en) * | 2016-11-04 | 2017-01-25 | 北京绿源众邦节能科技有限公司 | Cavitation water liquid state magnetic field purification system |
| CN108050111A (en) * | 2017-08-16 | 2018-05-18 | 山东天境环保科技有限公司 | Multistage multi |
| CN107489462A (en) * | 2017-09-18 | 2017-12-19 | 中国船舶重工集团公司第七0四研究所 | Sector crosssection superonic flow nozzzle of the turbine along streamline adjacent circumferential expansion |
| CN112118901A (en) * | 2018-06-14 | 2020-12-22 | 斗山能捷斯有限责任公司 | Reactor for cleaning flue gases by dry or quasi-dry adsorption processes |
| CN109458274A (en) * | 2018-06-25 | 2019-03-12 | 西北工业大学 | A kind of variable cross-section petaloid mixer-ejector suitable for pulse-knocking engine |
| CN113164996A (en) * | 2018-07-24 | 2021-07-23 | 卡莱尔液体科技(英国)公司 | Spray gun nozzle |
| CN113164996B (en) * | 2018-07-24 | 2023-03-07 | 卡莱尔液体科技(英国)公司 | Spray gun nozzle |
| CN109779788A (en) * | 2018-12-13 | 2019-05-21 | 西安航天动力研究所 | A kind of solution-air coaxial shear formula nozzle based on the design of lip sawtooth |
| DE102020125565A1 (en) | 2020-09-30 | 2022-03-31 | Norma Germany Gmbh | Vehicle drive with vacuum system and ejector |
| CN115234524A (en) * | 2022-07-03 | 2022-10-25 | 中国船舶重工集团公司第七0三研究所 | Detachable low-noise steam jet compressor |
| CN115234524B (en) * | 2022-07-03 | 2024-05-17 | 中国船舶重工集团公司第七0三研究所 | Detachable low-noise steam jet compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106064122B (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106064122A (en) | Sawtooth injecting type evacuation | |
| CN104772239B (en) | Supersonic speed chrysanthemum type nozzle and the gas blowing type vacuum pump for being equipped with the nozzle | |
| CN104772241B (en) | Ejector with convergent-divergent nozzle type receiving chamber | |
| CN104847708B (en) | Supersonic Ejector | |
| CN104929990B (en) | Injector jet pipe | |
| WO2018045606A1 (en) | Low-noise, self-priming and composite pump | |
| CN102635578A (en) | Multilevel lobed nozzle ejector with secondary-fluid sucking function | |
| CN201763702U (en) | Chemical evacuation equipment | |
| CN103016425B (en) | Three-level multi-spray-pipe central ejector | |
| CN204610381U (en) | A kind of centrifugal blower of impeller air inlet end band labyrinth seal structure | |
| CN106286420B (en) | Lobe evacuation | |
| CN106874536B (en) | Hierarchical optimization method for multistage multi-nozzle ejector | |
| CN104069961B (en) | Raindrop type layering sphere purge nozzle | |
| CN204755420U (en) | Six grades of steam jet pump vacuum pumping system | |
| CN111570106A (en) | Rectangular air knife | |
| CN204458511U (en) | High-pressure axial flow fan impeller | |
| CN202040129U (en) | Air suction device of water jet air ejector of turbine | |
| CN206071890U (en) | A kind of vortex combination pump for strengthening self-priming | |
| CN104265697B (en) | A kind of jet pump | |
| CN108050111B (en) | Multi-stage multi-tube high-efficiency jet pump | |
| CN103573723B (en) | Gas Jet compression system | |
| RU106924U1 (en) | LIQUID-JET COMPRESSOR | |
| CN206972310U (en) | A kind of curved hole preswirl nozzle for structure of being prewhirled for cold air | |
| CN104132006A (en) | Ejector for jet pump | |
| CN106762671B (en) | Exhaust pipe structure and compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210424 |