CN201487952U - Combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle - Google Patents
Combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle Download PDFInfo
- Publication number
- CN201487952U CN201487952U CN2009201966470U CN200920196647U CN201487952U CN 201487952 U CN201487952 U CN 201487952U CN 2009201966470 U CN2009201966470 U CN 2009201966470U CN 200920196647 U CN200920196647 U CN 200920196647U CN 201487952 U CN201487952 U CN 201487952U
- Authority
- CN
- China
- Prior art keywords
- coal
- spout
- nozzle
- slurry
- convergent
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to liquid fuel combustion equipment, aiming at providing a combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle. The nozzle comprises a nozzle shell which is internally provided with a nozzle base; a coal slurry nozzle is arranged on the nozzle base; the coal slurry nozzle is opposite to an impact chamber which is externally connected with a porous mixing part; the end head of the porous mixing part is closely connected with the coal slurry nozzle; the bottom part of the impact chamber is communicated with the through hole vertical to the nozzle; a vertical nozzle, a ring-shaped tail nozzle and a nozzle shell form a mixing chamber; the center of the inner side of the ring-shaped tail nozzle is provided with a collision multi-mixing atomizer; the end head of the porous mixing part and the ring-shaped tail nozzle are respectively provided with scaling nozzles in an annular manner; and the scaling nozzle is a through hole; and the inner wall of the through hole contracts gradually from two ends to central part along the axial direction. By the application of the novel scaling nozzles, the coal-water slurry atomizing nozzle realizes the atomization of the coal-water slurry by using supersonic air flow, has fine atomized granularity, is characterized by high kinetic energy and low energy consumption, and simultaneously has the effect of multi-stage impact of cross supersonic jet flow.
Description
Technical field
The utility model relates to a kind of liquid fuel combustion apparatus, and more particularly, the utility model relates to a kind of combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle.
Background technology
Water-coal-slurry is low the pollution for oil fuel of a kind of novel coal-based fluid that grows up in the oil crisis seventies in 20th century.It had both kept the coal original physical characteristics, had the same flowability of oil and stable again, was called as liquid coal product.Water-coal-slurry has characteristics such as efficiency of combustion height, pollutant emission are low, has tangible environment-friendly advantage aspect storage, transportation, the burning and exhausting, also becomes the first-selected object that clean fuel is promoted in the many cities of China.Therefore compare under identical calorific value, the coal water slurry fuel price only is about 1/2 of a heavy oil, has remarkable economic efficiency with water coal slurry replacing oil, is one of present enterprise effective way of overcoming difficulties by technological transformation.Use water-coal-slurry and direct burning coal facies ratio, have remarkable advantages such as efficiency of combustion height, load easy-regulating, energy-conservation and environmental benefit be good, so also be the important branch in the clean coal technology.COAL-WATER SLURRY TECHNOLOGY is suitable generation oil, environmental protection, a power-saving technology of China's current stage, can be widely used in station boiler, Industrial Boiler and Industrial Stoves for oil, for gas, for coal combustion, also can be used as gasified raw material and is used to produce synthetic ammonia, synthesizing methanol etc.The development COAL-WATER SLURRY TECHNOLOGY is produced clean fuel with coal, and replace oil with coal is that the strategy and the reality of China's energy long-term stability development is selected.Cool water mixture burning utilizes in the process, and the filtration of water-coal-slurry, atomizing and burning are the most key sport technique segments.
In the burner that water-coal-slurry is handled, coal-water slurry nozzle is a key equipment, is used for the water-coal-slurry atomizing is made it to become boiler oil.At present, comparatively ripe coal-water slurry nozzle is executed flow pattern, Y type, T type etc.
The utility model people of this case application once proposed a kind of " the multistage water-coal-slurry atomizing nozzle of impacting type " in Chinese utility model patent CN2079257, this nozzle is compared with technology before, the design that has proposed to have new structural design aspect being provided with of internal structure.
But, no matter be to execute flow pattern, Y type, T type nozzle, or the multistage water-coal-slurry atomizing nozzle of aforementioned impacting type, the mentality of designing of these nozzles is all adjusted round the nozzle interior structure, its theoretical foundation is consistent, all is to use velocity of sound or subsonic flow to atomize.Because viscosity in aqueous coal slurries is bigger, its atomizing difficulty is a lot of greatly than conventional liq fuel, thereby aforementioned techniques adjustment does not structurally produce the variation of hop.Increase outer gas stream speed and only depend on, required energy consumption is big, and atomizing effect is unsatisfactory.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of new combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle is provided.
Full-bodied water-coal-slurry or other heavy fuels or high-viscosity material are atomized, and the momentum that needs certain high velocity air to produce impacts water-coal-slurry or other heavy fuels or high-viscosity material.According to momentum formula, the flow of the speed * gas of the momentum=gas of gas.Under the condition of same gas flow, gas velocity is high more, and the momentum of gas is big more.Perhaps, under the condition that keeps identical momentum, the speed of gas is high more, and the flow of needed gas is just few more.Because the speed of supersonic airstream is greater than velocity of sound and subsonic flow, thus adopt supersonic airstream can effectively reduce gas flow, thereby reduce the atomizing energy consumption.
According to hydromechanical basic principle, seek out supersonic airstream, except the external pressure condition, the internal gas flow passage will satisfy the condition of first contraction (actual internal area is more and more littler) back expansion (actual internal area is increasing).
The utility model provides a kind of combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle, comprises the nozzle housing of built-in nozzle base, and the coal slurry spout is installed on the nozzle base, and the coal slurry spout is relative with impulse chamber; The external porous mixer element of impulse chamber, the termination of porous mixer element and coal slurry spout close proximity; The impulse chamber bottom is communicated with the through hole of vertical spout; Vertical spout, annular tail spray and nozzle housing formation mixing chamber, annular tail spray inboard center establishes the collision atomizers that mix more; The termination of porous mixer element and annular tail are sprayed to encircle respectively and are established the convergent-divergent spout, and described convergent-divergent spout is a through hole, and the inwall of through hole is shunk to the middle part gradually by two ends vertically.
As a kind of improvement, the inside minimum diameter of described convergent-divergent spout is 3～10mm, and axial length is 5～35mm.
As a kind of improvement, the angle between the inwall of described convergent-divergent spout and its axis is 5～40 degree.
As a kind of improvement, the angle between the axial and coal slurry spout center line of the convergent-divergent spout on the termination of described porous mixer element is 30～80 degree.
As a kind of improvement, the angle between the axial and coal slurry spout center line of the convergent-divergent spout that described annular tail is sprayed is 10～70 degree.
As a kind of improvement, the transition spout is established in the described porous mixer element outside, and the transition spout is communicated to the through hole of vertical spout by vertical direction.
Compared with prior art, the beneficial effects of the utility model are:
The utility model has taken into full account the requirement of anti-blocking, good atomizing, long service life and the low gas consumption rate of nozzle when design.The utilization of the convergent-divergent spout by novelty realizes utilizing supersonic airstream to come the atomized water coal slurry.Supersonic airstream is when impacting water-coal-slurry or other heavy fuel or unclassified stores, can produce the shock wave atomizing, the huge energy of utilizing shock wave to produce is come atomized water coal slurry or other heavy fuels or material, and its atomized particle size is tiny, has the characteristics of kinetic energy and low energy consumption.Simultaneously, cooperate structural design of the present utility model, this nozzle has the effect of the multistage impact of intersection supersonic jet.Certainly, the utility model also can apply in the burner of other heavy fuels.
Description of drawings
Fig. 1 is the internal structure schematic diagram of nozzle;
Fig. 2 has the left view of the porous mixer element of convergent-divergent spout for A portion among Fig. 1;
Fig. 3 is the section enlarged diagram of convergent-divergent spout;
Fig. 4 is a convergent-divergent spout outer shape schematic diagram.
Reference numeral among the figure is:
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, but not as to qualification of the present utility model.
Combined multi-stage supersonic speed water-coal-slurry nozzle among Fig. 1 comprises nozzle housing 5, the built-in nozzle base 1 of one end, the outside integrated setting of nozzle base 1 gas channel.Coal slurry spout 2 is installed on the nozzle base 1, and coal slurry spout 2 is relative with impulse chamber 4; The cylindrical outer wall of impulse chamber 4 connects porous mixer element 3, the termination of porous mixer element 3 and coal slurry spout 2 close proximity; Impulse chamber 4 bottoms are communicated with the through hole of vertical spout 6; Transition spout 11 is established in porous mixer element 3 outsides, and transition spout 11 is communicated to the through hole of vertical spout 6.Annular tail spray 9 is connected on the nozzle housing 5, and vertical spout 6, annular tail spray 9 constitute mixing chambers 7 with nozzle housing 5, and annular tail is sprayed 9 inboard centers and established the collision atomizers 8 that mix more; Encircle respectively in the termination of porous mixer element 3 and the annular tail spray 9 and establish convergent-divergent spout 12 and convergent-divergent spout 10.
Convergent-divergent spout 12 and convergent-divergent spout 10 are through hole, and through-hole wall is shunk to the middle part gradually by two ends vertically.This is a key Design of the present utility model, just because of this design feature, satisfies the condition that the internal gas flow passage shrinks (actual internal area is more and more littler) back expansion (actual internal area is increasing) earlier just now, is achieved the supersonic airstream atomizing effect.
The inside minimum diameter of convergent-divergent spout 12 and convergent-divergent spout 10 is 3～10mm, and axial length is 5～35mm, and the angle between its inwall and the axis is 5～40 degree.
In addition, for farthest increasing the effect of the multistage impact of intersection supersonic jet, the angle between the axial and coal slurry spout center line of the convergent-divergent spout 12 on the termination of porous mixer element is 30～80 degree.Angle between the axial and coal slurry spout center line of the convergent-divergent spout that annular tail is sprayed is set to 10～70 degree then according to the burner technological requirement.
Concrete use of the present utility model is as follows:
Be atomized coal slurry and enter impulse chamber 4 (one-level impact) by coal slurry spout 2 with certain pressure, the supersonic atomization air-flow enters impulse chamber from convergent-divergent spout 12 with supersonic speed with certain pressure.Intersect bump in the exit of convergent-divergent spout and the water-coal-slurry of coal slurry spout 2 ejections, finish atomizing for the first time.The air-flow that transition spout 11 comes out flows to direction as the secondary atomization gas perpendicular to the slurry gas mixture after atomizing and enters the mixing logistics, forms crossing at right angle and atomizes for the second time.Slurry gas mixture stream behind the secondary-atomizing enters mixing chamber 7 by vertical spout 6 further to be mixed.Added in the place ahead of mixing chamber outlet simultaneously and collided the atomizers 8 (impulse member) that mix more, made the coal slurry air-flow mix collision through the front more and spray with supersonic speed from the convergent-divergent spout 10 that annular tail is sprayed on 9 again.
The collision of coal slurry air-flow mixes atomizing more belongs to mechanical atomization, and it utilizes the collision effects that mix atomizer to the coal slurry air-flow more under the condition that does not increase atomization gas, increased the one-level atomizing again, thereby improved the atomization quality of coal slurry.The convergent-divergent spout 10 of annular tail spray 9 also is the supersonic speed spout, and the slurry gas mixture in the secondary mixing chamber has been realized supersonic atomization fully mixing after convergent-divergent spout 10 penetrates with supersonic flow.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (6)
1. combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle, the nozzle housing that comprises built-in nozzle base, the coal slurry spout is installed on the nozzle base, it is characterized in that, the coal slurry spout is relative with impulse chamber, the external porous mixer element of impulse chamber, the termination of porous mixer element and coal slurry spout close proximity; The impulse chamber bottom is communicated with the through hole of vertical spout; Vertical spout, annular tail spray and nozzle housing formation mixing chamber, annular tail spray inboard center establishes the collision atomizers that mix more; The termination of porous mixer element and annular tail are sprayed to encircle respectively and are established the convergent-divergent spout, and described convergent-divergent spout is a through hole, and the inwall of through hole is shunk to the middle part gradually by two ends vertically.
2. combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle according to claim 1, the inside minimum diameter of described convergent-divergent spout is 3～10mm, axial length is 5～35mm.
3. any one combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle according to claim 1 and 2, the angle between the inwall of described convergent-divergent spout and its axis are 5～40 degree.
4. any one combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle according to claim 1 and 2, the angle between the axial and coal slurry spout center line of the convergent-divergent spout on the termination of described porous mixer element is 30～80 degree.
5. the angle between the axial and coal slurry spout center line of the convergent-divergent spout that any one combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle according to claim 1 and 2, described annular tail are sprayed is 10～70 degree.
6. any one combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle according to claim 1 and 2, the transition spout is established in the described porous mixer element outside, and the transition spout is communicated to the through hole of vertical spout by vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201966470U CN201487952U (en) | 2009-09-15 | 2009-09-15 | Combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201966470U CN201487952U (en) | 2009-09-15 | 2009-09-15 | Combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487952U true CN201487952U (en) | 2010-05-26 |
Family
ID=42426831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201966470U Expired - Lifetime CN201487952U (en) | 2009-09-15 | 2009-09-15 | Combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487952U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466226A (en) * | 2010-11-11 | 2012-05-23 | 北京航天动力研究所 | Multi-angle impact atomization coal water slurry nozzle |
| CN102466227A (en) * | 2010-11-11 | 2012-05-23 | 北京航天动力研究所 | Multi-unit multi-stage bubble impact atomization coal water slurry nozzle |
| CN102777899A (en) * | 2012-08-22 | 2012-11-14 | 常州大学 | Internal mixing type gas atomization fuel nozzle |
| CN103528073A (en) * | 2012-07-04 | 2014-01-22 | 中国石油化工股份有限公司 | Spray gun for incinerating highly-concentrated organic wastewater of acrylonitrile device |
| CN107191928A (en) * | 2017-06-23 | 2017-09-22 | 山西大学 | A kind of multistage atomizing oil gun |
-
2009
- 2009-09-15 CN CN2009201966470U patent/CN201487952U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466226A (en) * | 2010-11-11 | 2012-05-23 | 北京航天动力研究所 | Multi-angle impact atomization coal water slurry nozzle |
| CN102466227A (en) * | 2010-11-11 | 2012-05-23 | 北京航天动力研究所 | Multi-unit multi-stage bubble impact atomization coal water slurry nozzle |
| CN103528073A (en) * | 2012-07-04 | 2014-01-22 | 中国石油化工股份有限公司 | Spray gun for incinerating highly-concentrated organic wastewater of acrylonitrile device |
| CN103528073B (en) * | 2012-07-04 | 2015-08-19 | 中国石油化工股份有限公司 | A kind of spray gun for burning acrylonitrile installation high concentrated organic wastewater |
| CN102777899A (en) * | 2012-08-22 | 2012-11-14 | 常州大学 | Internal mixing type gas atomization fuel nozzle |
| CN102777899B (en) * | 2012-08-22 | 2015-04-01 | 常州大学 | Internal mixing type gas atomization fuel nozzle |
| CN107191928A (en) * | 2017-06-23 | 2017-09-22 | 山西大学 | A kind of multistage atomizing oil gun |
| CN107191928B (en) * | 2017-06-23 | 2023-09-22 | 山西大学 | Multistage atomization oil gun |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201503015U (en) | Adjustable spiral bubble atomizer | |
| CN201487952U (en) | Combined low-energy-consumption multi-stage supersonic coal-water slurry atomizing nozzle | |
| CN201015755Y (en) | Impact inner-mixing type air bubble atomizing nozzle | |
| CN102777899B (en) | Internal mixing type gas atomization fuel nozzle | |
| KR102028782B1 (en) | Injection of heavy and particulate laden fuels | |
| CN101893236B (en) | Low-pressure oil film breaking and atomizing technology and device thereof | |
| CN101398186A (en) | Self-absorption rotational flow pneumatic atomization nozzle device | |
| CN203162943U (en) | Efficient fuel oil atomization nozzle | |
| CN103045306A (en) | Coal water slurry bubble atomizing nozzle | |
| CN201344531Y (en) | Self-priming swirl pneumatic atomizing nozzle | |
| CN202733889U (en) | Internal-mixing gas atomized fuel nozzle | |
| CN109210532A (en) | A kind of reinforcement atomizing type fuel lance | |
| CN101650030A (en) | Combined low-consumption multistage supersonic speed water-coal-slurry atomizing nozzle | |
| CN105562233A (en) | Nozzle for urea pyrolysis device | |
| CN2158031Y (en) | Internal ultra-sound wave atomized spray nozzle | |
| CN209744417U (en) | Air atomizing nozzle with double oil ways and double rotational flow structures | |
| CN209147077U (en) | A kind of reinforcement atomizing type fuel lance | |
| CN202989075U (en) | Water-coal-slurry air bubble atomizing spray nozzle | |
| CN203484260U (en) | Micron-sized liquid atomizing gun | |
| CN2365524Y (en) | Oil gun burned with high viscosity liquid fuel | |
| CN101403499B (en) | Double-Y shaped fuel treble atomizing method and atomizer | |
| CN210458076U (en) | Liquid fuel swelling fission terminal | |
| CN103406220A (en) | Micron-sized liquid atomization gun | |
| CN210458077U (en) | Liquid fuel puffing fission device | |
| CN203507371U (en) | Micro water fog spray head based on bubble atomization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170428 Address after: 310012 Xihu District, Hangzhou, Wensanlu Road, China, No., Times Square, block C, layer 2, layer 478 Co-patentee after: Zhejiang University Patentee after: Zhejiang Pyneo Technology Co., Ltd. Address before: 310012 Zhejiang, Hangzhou, Wensanlu Road, No., Huaxing Times Square, block A, room 905, room Patentee before: Zhejiang Pyneo Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
|
| CX01 | Expiry of patent term |