CN202132945U - CWS two-fluid electrostatic atomization spray gun - Google Patents
CWS two-fluid electrostatic atomization spray gun Download PDFInfo
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- CN202132945U CN202132945U CN201120203635U CN201120203635U CN202132945U CN 202132945 U CN202132945 U CN 202132945U CN 201120203635 U CN201120203635 U CN 201120203635U CN 201120203635 U CN201120203635 U CN 201120203635U CN 202132945 U CN202132945 U CN 202132945U
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- spray gun
- coal
- slurry
- water
- electrostatic atomization
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Abstract
The utility model discloses a CWS (Coal Water Slurry) two-fluid electrostatic atomization spray gun. The spray gun comprises a spray gun main body provided with a CWS inlet, a compressed gas inlet and a spray gun outlet, wherein the CWS inlet and the compressed gas inlet are mutually communicated and are both communicated with the spray gun outlet; and an electrostatic induction atomization device is further arranged at the spray gun outlet. In the spray gun provided by the utility model, as the electrostatic induction atomization device is arranged at the spray gun outlet, CWS fogdrop group at the spray gun outlet is loaded with the same electric charge when passing through the electrostatic field induced by an annular closed electrode of the electrostatic induction atomization device; and based on the coulombic fission effect, the CWS fogdrop can break through the Rayleigh limit under the action of electrostatic force to be subject to secondary breaking, so as to obtain a higher slurry atomization fineness.
Description
Technical field
The utility model relates to the injection apparatus field, relates to a kind of water-coal-slurry two-fluid electrostatic atomization spray gun in particular.
Background technology
Water-coal-slurry be the novel low carbon that is mixed with through Physical Processing in certain proportion by coal, water and chemical addition agent, environmental protection, energy-conservation coal-based generation oil fuel, it can be used for the burning of heat energy such as electricity generation boiler, cogeneration boiler, Industrial Boiler, oil field heating stove and oil thermal recovery stove and power-equipment.But because water-coal-slurry has the viscosity height, the atomizing resistance is big; Rheological behavior complicacy etc. is different from some characteristics of fuel oil fully; This structure and design to coal-water slurry nozzle has proposed relatively harsher requirement, and an atomizing difficult problem has restricted it to a great extent and promoted the use of all sidedly.
At present; In order to obtain good atomization quality to improve efficiency of combustion and to reduce discharging; The atomizing lance of main flow (or claiming atomizer, atomizer etc.) all is to adopt the twin pattern; Promptly impact water-coal-slurry through air or high-temperature vapor, its concrete application can see also Chinese invention patent CN101220960A and Chinese utility model patent CN2714972Y; This air or high-temperature vapor are via just getting into the water-coal-slurry spray gun after the air compressor machine processed compressed; Water-coal-slurry can have atomizing effect preferably under the impact of air or high-temperature vapor; And along with the air pressure of air or high-temperature vapor and the increase of throughput, the atomizing effect of water-coal-slurry can get a promotion.
But; Utilize air compressor machine compressed air or steam can have the problem that an energy consumes; And along with the increase of the air pressure and the flow of air or steam, this energy consumption also increases gradually, and this energy consumption specifically can adopt this index of gas consumption rate to weigh; The consumption of the high more then energy of gas consumption rate is big more, otherwise then more little; (this slurry spraying fineness is the fineness that SMD characterizes droplet with Sauter mean diameter generally in order to pursue littler slurry spraying fineness; SMD is more little; This atomized particle size is more little, and atomization quality is high more, helps the burning of water-coal-slurry and the reduction of discharging more); Then must adopt higher gas consumption rate, promptly need higher energy resource consumption.Thus, people must carry out considering of economy between the two, also promptly how to find the energy resource consumption to try one's best little to obtain to try one's best high atomization quality, it is a problem all doing of whole world researcher at present just.
With too much energy resource consumption is that cost obtains higher atomizing effect yes that we are unwilling to see, and in fact this improved the operating cost of enterprise.The research of academia at present all shows; The gas consumption rate increases within the specific limits; Can reduce atomized particle size; But after the gas consumption rate reached a certain value, continuing increased the purpose that the gas consumption rate just can not reach remarkable reduction atomized particle size again, also is that the spray gun of the present whole world various employing twin method all has a rational gas consumption rate index.Such as; Generally acknowledge the multipole atomizing coal-water slurry nozzle of impacting type of effect Zhejiang University's exploitation preferably at present; The best gas consumption rate of its actual measurement is between 16% to 21%, and the SMD of water-coal-slurry droplet is (this is wherein because of the mass concentration of water-coal-slurry, the difference difference of water-coal-slurry flow) between 20 microns to 50 microns.
In view of this, the inventor has this case to produce to the defective further investigation that can't further significantly reduce atomized particle size at present then.
The utility model content
The purpose of the utility model is to provide a kind of water-coal-slurry two-fluid electrostatic atomization spray gun, to solve the problem that water-coal-slurry twin spray gun in the prior art can't further reduce atomized particle size under with homenergic consumption.
In order to reach above-mentioned purpose, the solution of the utility model is:
A kind of water-coal-slurry two-fluid electrostatic atomization spray gun; Comprise spraygun body; This spraygun body has water-coal-slurry import, inlet for pressurised gas and spray gun outlet; This water-coal-slurry import and inlet for pressurised gas is connected and all be connected with spray gun outlet, wherein, this spray gun exit also is provided with the electrostatic induction atomising device.
Further; This electrostatic induction atomising device comprises that ring is located at the insulating ceramics of spray gun outlet; This insulating ceramics has the interior hollow bulb of annular, is provided with annular closed electrode in the hollow bulb in this, and the closed electrode of this annular links to each other with electrostatic generator through the lead-in wire that runs through insulating ceramics.
Further, the closed electrodes use copper material of this annular is processed.
Further, this spraygun body is formed with the insulated channel that is positioned at wall and the insulated openings that is positioned at sidepiece, and this insulated channel is connected with insulated openings, and this lead-in wire runs through and passes through behind the insulating ceramics to link to each other with electrostatic generator after insulated channel and the insulated openings.
Further, this electrostatic atomization spray gun also has the central passage that is communicated with water-coal-slurry import and spray gun outlet, and this central passage is shape linearly, and this water-coal-slurry import and spray gun export and align, and this inlet for pressurised gas is arranged on the sidepiece of electrostatic atomization spray gun.
Further, this electrostatic atomization spray gun is arranged at intervals with three grades of inlet for pressurised gas along the central passage bearing of trend.
Further, all form 60 between the pipeline of this each inlet for pressurised gas and the central passage
oThe impulses of angle.
Further, this every grade inlet for pressurised gas becomes 120 degree angles and is arranged as 3 on the plane of 360 degree.
After adopting said structure; A kind of water-coal-slurry two-fluid electrostatic atomization nozzle that the utility model relates to, because this spray gun exit also is provided with the electrostatic induction atomising device, the water-coal-slurry droplet crowd who promptly arrives the spray gun exit all has like charges with the induction charging mode; Based on coulomb division effect; The water-coal-slurry droplet will be broken through Rayleigh limit under the effect of electrostatic force, the second-time breakage phenomenon takes place, thereby obtain littler slurry spraying fineness.The utility model is with respect to prior art thus; It not only impacts water-coal-slurry through air or high-temperature vapor makes the water-coal-slurry atomizing; Also be provided with the electrostatic induction atomising device that plays the secondary-atomizing effect for one simultaneously again, so make the utility model can further reduce atomized particle size in the spray gun exit.
Description of drawings
The preferred embodiment of a kind of water-coal-slurry two-fluid electrostatic atomization spray gun is assembled in the cutaway view on the hearth wall to Fig. 1 for the utility model relates to;
Fig. 2 is the vertical view of inlet for pressurised gas among Fig. 1;
Fig. 3 is the cutaway view of electrostatic induction atomising device among Fig. 1.
Among the figure:
Electrostatic atomization spray gun 100 spraygun body 1
Water-coal-slurry import 11 inlet for pressurised gas 12
Electrostatic induction atomising device 2 insulating ceramicses 21
Interior hollow bulb 211 annular closed electrodes 22
23 hearth walls 200 go between.
The specific embodiment
In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.
As shown in Figure 1; A kind of water-coal-slurry two-fluid electrostatic atomization spray gun 100 that it relates to for the utility model; Comprise spraygun body 1; This spraygun body 1 has water-coal-slurry import 11, inlet for pressurised gas 12 and spray gun outlet 13, and this water-coal-slurry import 11 is connected with inlet for pressurised gas 12 and all is connected with spray gun outlet 13, and this spray gun exports 13 places and also is provided with electrostatic induction atomising device 2.Concrete, in the present embodiment, this electrostatic atomization spray gun 100 is fixed on the hearth wall 200.
Like this; Water-coal-slurry gets into spraygun body 1 via water-coal-slurry import 11, and Compressed Gas then gets into spraygun body 1 via inlet for pressurised gas 12, and both form mixed serum through mixing and arrive spray gun outlet 13; Because this electrostatic induction atomising device 2 can export 13 places at spray gun and form electrostatic field; Export the 13 water-coal-slurry droplet crowds of place and all have like charges with the induction charging mode even must arrive spray gun, based on coulomb division effect, the water-coal-slurry droplet will be broken through Rayleigh limit under the effect of electrostatic force; The second-time breakage phenomenon takes place, thereby obtains littler slurry spraying fineness.
Thus; The utility model is with respect to prior art; It not only impacts water-coal-slurry through air or high-temperature vapor makes the water-coal-slurry atomizing; Also export 13 places simultaneously and be provided with the electrostatic induction atomising device 2 that plays the secondary-atomizing effect for one again, so make the utility model can further reduce atomized particle size at spray gun.
Preferably; Please cooperate shown in Figure 3; This electrostatic induction atomising device 2 comprises that ring is located at the insulating ceramics 21 of spray gun outlet 13; This insulating ceramics 21 has the interior hollow bulb 211 of annular, is provided with annular closed electrode 22 in the hollow bulb 211 in this, and the closed electrode 22 of this annular links to each other with the electrostatic generator (not shown) through the lead-in wire 23 that runs through insulating ceramics 21.
Because the closed electrode 22 of this annular is closed, it can form very strong high-voltage electrostatic field, promptly lets annular closed electrode 22 form high-voltage; Water-coal-slurry liquid through wherein is zero potential owing to ground connection then; Like this, this water-coal-slurry fluid column with high electrical conductivity can be because of like charges on the mode band of induction charging (promptly contactless) through after this high-strength closed electrostatic field; Though this carrying capacity is very little; But be enough to make the water-coal-slurry droplet to reach the limit of enclosed pasture division, thereby let water-coal-slurry droplet generation second-time breakage, and reached the effect of further atomizing.
Need to prove; The electric current of this electrostatic generator has only microampere order; The electric energy of its required consumption is also littler than the electric quantity consumption of a common flashlight, promptly can let droplet generation second-time breakage than it and reaches the effect of assisted atomization, and the energy that it consumed is very little.
Simultaneously, this insulating ceramics 21 also has the effect of high temperature resistant burning, thereby lets spray gun outlet 13 have long service life, and this insulating ceramics 21 can be avoided annular closed electrode 22 and water-coal-slurry directly to contact and form the loop simultaneously, causes the dangerous consequences of discharge.The closed electrode 22 preferred copper materials that adopt of this annular are processed.
Further; This electrostatic generator can be through 23 voltages regulated on the annular closed electrode 22 that go between when reality is used; Thereby the size of control water-coal-slurry droplet carrying capacity; Because the droplet of different carrying capacities is different at the electric field force of the closed electrode 22 of the suffered annular of electrostatic field, can controls water-coal-slurry thus and penetrate the formed mist torch shape in back, thereby can regulate its combustion process according to actual condition from nozzle.
Please once more with reference to Fig. 1 and shown in Figure 3; This spraygun body 1 is formed with insulated channel 14 that is positioned at wall and the insulated openings 15 that is positioned at sidepiece; This insulated channel 14 is connected with insulated openings 15, and this lead-in wire 23 runs through insulating ceramics 21 backs and links to each other with electrostatic generator with insulated openings 15 backs through insulated channel 14.Like this, because this lead-in wire 23 directly enters into insulated channel 14 after by insulating ceramics 21 derivation, 23 do not bedewed by water-coal-slurry so can guarantee to go between.
Please with reference to shown in Figure 1; This electrostatic atomization spray gun 100 also has the central passage 16 that is communicated with water-coal-slurry import 11 and spray gun outlet 13; This central passage 16 is shape linearly, and this water-coal-slurry import 11 aligns with spray gun outlet 13, and this inlet for pressurised gas 12 is arranged on the sidepiece of electrostatic atomization spray gun 100.Because water-coal-slurry viscosity is bigger, and grain shape is irregular and sharp-pointed, is that central passage 16 is designed to linearity through the passage with water-coal-slurry, promptly directly advances directly, thereby can reduces flow losses and reduce the wearing and tearing that the slurry road is avoided.
Preferably, this electrostatic atomization spray gun 100 is arranged at intervals with three grades of inlet for pressurised gas 12 along central passage 16 bearing of trends, and all forms 60 between the pipeline of each inlet for pressurised gas 12 and the central passage 16
oThe impulses of angle, this impulses are meant that the gas of being come in by inlet for pressurised gas 12 except having the power that impacts water-coal-slurry, also has and the identical power of the water-coal-slurry direction of motion of being come in by central passage 16.
The experiment proof; The atomizing effect that 1 grade or 2 grades of inlet for pressurised gas 12 are set can make water-coal-slurry in spray gun outlet 13, reach high turbulivity not as the Compressed Gas of 12,3 grades of 3 grades of inlet for pressurised gas impacts continuous water-coal-slurry liquid; And after surpassing three grades; Its turbulivity increases not obvious, and the gas consumption rate is increased, and then the waste energy; Concrete, the 1st grade of turbulivity that improves about 80% the highest wherein, the 2nd grade of maximum can improve about 15%, and be just not obvious after the most about the about 3%, 4th grade of the 3rd level, therefore there is no need to be provided with the 4th grade; And further with forming 60 between the pipeline of inlet for pressurised gas 12 and the central passage 16
oAngle can promote impact effect.
More preferably, this every grade inlet for pressurised gas 12 becomes 120 degree angles and is arranged as 3 on the plane of 360 degree; If only be provided with 1, then can form asymmetric shocks, the mist torch is crooked afterwards from the spray gun ejaculation to cause coal slurry, and flame is stable when being unfavorable for burning; If only symmetric arrangement is two, two inlet for pressurised gas 12 then possibly occurs and spatter water coal slurry particle into and cause local situation about stopping up; Surpass 3 if inlet for pressurised gas 12 is arranged as, promptly the gas consumption rate will increase and be the original intention of having run counter to energy-saving and emission-reduction, and make the structure of water-coal-slurry spray gun become complicated more simultaneously, increase its manufacturing cost; In addition, reach identical air-flow percent of pass, three passages and four or with the upper channel situation; As long as it is just passable to change the area of passage (diameter just) of a lower channel, such as three passages, internal diameter is d; Then total area of passage is 3* π * d2/2, four passages, and internal diameter changes d into; Can reach and three area of passages that passage is identical, by that analogy, five passage d ... All can obtain identical area of passage so; Also promptly under the constant situation of pressure, the gas consumption rate is identical; In sum, arranging three with every grade is the best.
Product form of the foregoing description and graphic and non-limiting the utility model and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.
Claims (8)
1. water-coal-slurry two-fluid electrostatic atomization spray gun; Comprise spraygun body; This spraygun body has water-coal-slurry import, inlet for pressurised gas and spray gun outlet; This water-coal-slurry import and inlet for pressurised gas is connected and all be connected with spray gun outlet is characterized in that this spray gun exit also is provided with the electrostatic induction atomising device.
2. a kind of water-coal-slurry two-fluid electrostatic atomization spray gun as claimed in claim 1; It is characterized in that; This electrostatic induction atomising device comprises that ring is located at the insulating ceramics of spray gun outlet; This insulating ceramics has the interior hollow bulb of annular, is provided with annular closed electrode in the hollow bulb in this, and the closed electrode of this annular links to each other with electrostatic generator through the lead-in wire that runs through insulating ceramics.
3. a kind of water-coal-slurry two-fluid electrostatic atomization spray gun as claimed in claim 2 is characterized in that, the closed electrodes use copper material of this annular is processed.
4. a kind of water-coal-slurry two-fluid electrostatic atomization spray gun as claimed in claim 2; It is characterized in that; This spraygun body is formed with insulated channel that is positioned at wall and the insulated openings that is positioned at sidepiece; This insulated channel is connected with insulated openings, and this lead-in wire runs through behind the insulating ceramics through linking to each other with electrostatic generator after insulated channel and the insulated openings.
5. according to claim 1 or claim 2 a kind of water-coal-slurry two-fluid electrostatic atomization spray gun; It is characterized in that; This electrostatic atomization spray gun also has the central passage that is communicated with water-coal-slurry import and spray gun outlet; This central passage is shape linearly, and the outlet of this water-coal-slurry import and spray gun aligns, and this inlet for pressurised gas is arranged on the sidepiece of electrostatic atomization spray gun.
6. a kind of water-coal-slurry two-fluid electrostatic atomization spray gun as claimed in claim 5 is characterized in that this electrostatic atomization spray gun is arranged at intervals with three grades of inlet for pressurised gas along the central passage bearing of trend.
7. a kind of water-coal-slurry two-fluid electrostatic atomization spray gun as claimed in claim 6 is characterized in that, all forms 60 between the pipeline of this each inlet for pressurised gas and the central passage
oThe impulses of angle.
8. a kind of water-coal-slurry two-fluid electrostatic atomization spray gun as claimed in claim 6 is characterized in that, this every grade inlet for pressurised gas becomes 120 degree angles and is arranged as 3 on the plane of 360 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203635U CN202132945U (en) | 2011-06-16 | 2011-06-16 | CWS two-fluid electrostatic atomization spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203635U CN202132945U (en) | 2011-06-16 | 2011-06-16 | CWS two-fluid electrostatic atomization spray gun |
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| Publication Number | Publication Date |
|---|---|
| CN202132945U true CN202132945U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120203635U Expired - Lifetime CN202132945U (en) | 2011-06-16 | 2011-06-16 | CWS two-fluid electrostatic atomization spray gun |
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| Country | Link |
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| CN (1) | CN202132945U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230621A (en) * | 2011-06-16 | 2011-11-02 | 集美大学 | Water-coal-slurry double-fluid electrostatic atomization spray gun |
| CN104748144A (en) * | 2015-03-11 | 2015-07-01 | 江苏大学 | Gas-liquid coaxial ejection liquid fuel electrostatic atomization nozzle |
| CN104848209A (en) * | 2015-01-23 | 2015-08-19 | 江苏大学 | Electrostatic atomization combustion method and apparatus for liquid fuel |
-
2011
- 2011-06-16 CN CN201120203635U patent/CN202132945U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230621A (en) * | 2011-06-16 | 2011-11-02 | 集美大学 | Water-coal-slurry double-fluid electrostatic atomization spray gun |
| CN102230621B (en) * | 2011-06-16 | 2013-07-31 | 集美大学 | Water-coal-slurry double-fluid electrostatic atomization spray gun |
| CN104848209A (en) * | 2015-01-23 | 2015-08-19 | 江苏大学 | Electrostatic atomization combustion method and apparatus for liquid fuel |
| CN104748144A (en) * | 2015-03-11 | 2015-07-01 | 江苏大学 | Gas-liquid coaxial ejection liquid fuel electrostatic atomization nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120201 Effective date of abandoning: 20130731 |
|
| RGAV | Abandon patent right to avoid regrant |