CN202606018U - Air-cooling type air-atomizing spraying gun - Google Patents
Air-cooling type air-atomizing spraying gun Download PDFInfo
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- CN202606018U CN202606018U CN 201220241163 CN201220241163U CN202606018U CN 202606018 U CN202606018 U CN 202606018U CN 201220241163 CN201220241163 CN 201220241163 CN 201220241163 U CN201220241163 U CN 201220241163U CN 202606018 U CN202606018 U CN 202606018U
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- air
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Abstract
The utility model discloses an air-cooling type air-atomizing spraying gun, comprising a spraying gun body and a spraying nozzle component, wherein the spraying nozzle component is embedded into an air blowing pipe of the spraying gun body; the spraying gun body comprises a water solution pipe; one end of the water solution pipe is connected with a reducing-agent main pipe, and the other end of the water solution pipe is provided with a spraying gun head; one end of an air atomizing pipe outside the water solution pipe is connected with an air atomizing main pipe, and the other end of the air atomizing pipe is connected with the spraying gun head 3; the air blowing pipe is also arranged between the air atomizing pipe and an outer pipe of the spraying gun body; one end of the air blowing pipe is connected with an air blowing main pipe; the water solution pipe and the air atomizing pipe are connected with a detachable joint by a supporting structures; the detachable joint is connected with the spraying gun body by threads; the spraying nozzle component comprises a liquid cap which is connected with an outer-thread joint of the spraying gun body; and an air cap is connected with the liquid cap and is provided with an air cap spraying port. The air-cooling type air-atomizing spraying gun disclosed by the utility model has the advantages that the bonding of dust at the front section of a spraying nozzle is avoided, and the service life of the spraying nozzle is prolonged.
Description
Technical field
The utility model belongs to recirculating fluidized bed (CFB) boiler SNCR method (SNCR) denitration applied technical field, is specifically related to a kind of air-cooled type air atomization spray gun.
Background technology
The SNCR denitration technology is suitable for CFBB especially at present as one of main flow denitration technology.The SNCR denitration technology is under the situation of not adding catalyst, denitrification reducing agent (urea liquid, ammoniacal liquor etc.) is sprayed in the high-temperature flue gas (850 ℃ ~ 1150 ℃) at burner hearth or other position, with NO
XGeneration selective reduction reaction, product is H
2O and N
2, realize reducing NO
XThe discharging purpose.
Spray gun is one of nucleus equipment of SNCR denitrating system, and the stable of spray gun performance is to guarantee the reducing agent aqueous solution and the well-mixed key of flue gas.At present, the existing spray gun that is applied to the SNCR denitrating system mainly contains following several kinds: mechanical atomization spray gun, air atomization spray gun etc.The spray gun of the type is applicable to that generally low temperature, high dust concentration are perhaps in high temperature, the use of high dust concentration environment.When the SNCR denitrating system is applied to the CFB boiler; Its outside environment for use is extremely abominable; Be high temperature, high flow rate, high ash concentration environment, and reductant solution has caustic corrosion property, common spray gun uses with this understanding; Easy burn-out, obstruction, and then cause resistance increase, nozzle flow change, atomizing mixed effect variation, denitration efficiency reduction, amount of ammonia slip increase etc.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art; The purpose of the utility model is to provide a kind of air-cooled type air atomization spray gun; In cooling, promoted the purging intensity of nozzle, avoided the bonding of dust effectively, can increase substantially the service life of nozzle at the nozzle leading portion.
In order to achieve the above object, the utility model adopts technical scheme to be:
A kind of air-cooled type air atomization spray gun comprises spray gun body and nozzle assembly, and nozzle assembly is embedded in the purging air pipe 12 of spray gun body; The spray gun body comprises aqueous suction pipes 1; One end of aqueous suction pipes 1 is provided with aqueous suction pipes joint 2, is connected through the female gas thread of aqueous suction pipes joint 2 and reducing agent, and the other end is provided with lance head 3; The aqueous suction pipes 1 outer atomized air tube 11 that is provided with; Atomized air tube 11 1 ends are connected through the female gas thread of atomizing air pipe joint 13 and atomizing air, and the other end is connected with lance head 3, also is provided with purging air pipe 12 between atomized air tube 11 and the spray gun body outer tube; One end of purging air pipe 12 is connected through the female gas thread of purging air pipe joint 14 and purging air; Aqueous suction pipes 1, atomized air tube 11 are connected through the detachable connector 18 of supporting construction 15 with band abrasionproof coating, and detachable connector 18 is connected through screw thread 16 with the spray gun body, and is provided with the 3rd gasket seal 17;
Nozzle assembly comprises liquid cap 4; Liquid cap 4 is connected with spray gun body male connection 5, and is provided with first gasket seal 6, and air cap 7 is connected through liquid cap male connection 8 with liquid cap 4; And being provided with second gasket seal 9, air cap 7 is provided with air cap spout 10.
Said supporting construction 15 adopts welding manner to be connected with the firm of atomized air tube 11 with the aqueous solution 2 to guarantee purging air pipe 12.
The front end of said purging air pipe 12 is exposed to flue gas and partly scribbles the high-temperature wearable layer.
The utility model parts adopt stainless steel.
Compared with prior art, the utlity model has following advantage:
1) the utility model is a kind of air-cooled type air atomization spray gun of the CFB of being applicable to boiler SNCR denitrating system; Compressed air is got into by purging air pipe 12; The top forms high velocity air, effectively cooling jet through dwindling discharge area; Make nozzle be in optimum Working, solved in the past the nozzle long term exposure is prone to scaling loss, blocking problem in high-temperature flue gas.
2) through after 12 throttlings of purging air pipe, strengthened purging effect, avoided the residual reductant solution in nozzle place directly to contact high temperature corrosion and the adhesion problem that causes with high temperature/high ash concentration flue gas to the nozzle dust stratification.
3) the utility model detachable connector 18, liquid cap 4 and air cap 7 can separate with the spray gun body easily, and be easy to replace and maintain, and detachable connector 18 design abrasion-proof structures make to the utlity model has applicability and operability widely.
4) the utility model is a kind of air-cooled type air atomization spray gun of the CFB of being applicable to boiler SNCR denitrating system, and purging air pipe 12 front ends are exposed to flue gas and partly scribble the high-temperature wearable layer, have further prolonged the service life of spray gun.
Description of drawings
Fig. 1 is the utility model overall structure sketch map.
Fig. 2 is the utility model spray gun supporting surface cross-sectional view.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
See figures.1.and.2, a kind of air-cooled type air atomization spray gun comprises spray gun body and nozzle assembly; Nozzle assembly is embedded in the purging air pipe 12 of spray gun body, and the spray gun body comprises aqueous suction pipes 1, and an end of aqueous suction pipes 1 is provided with aqueous suction pipes joint 2; Be connected through the female gas thread of aqueous suction pipes joint 2 and reducing agent; The other end is provided with lance head 3, the aqueous suction pipes 1 outer atomized air tube 11 that is provided with, and atomized air tube 11 1 ends pass through atomizing air pipe joint 13 and are connected with the female gas thread of atomizing air; The other end is connected with lance head 3; Also be provided with purging air pipe 12 between atomized air tube 11 and the spray gun body outer tube, an end of purging air pipe 12 is connected through the female gas thread of purging air pipe joint 14 and purging air, and aqueous suction pipes 1, atomized air tube 11 are connected through the detachable connector 18 of supporting construction 15 with band abrasionproof coating; Detachable connector 18 is connected through screw thread 16 with the spray gun body, and is provided with the 3rd gasket seal 17;
Nozzle assembly comprises liquid cap 4; Liquid cap 4 is connected with spray gun body male connection 5, and is provided with first gasket seal 6, and air cap 7 is connected through liquid cap male connection 8 with liquid cap 4; And being provided with second gasket seal 9, air cap 7 is provided with air cap spout 10.
Said supporting construction 15 adopts welding manner to be connected with the firm of atomized air tube 11 with the aqueous solution 2 to guarantee purging air pipe 12.
The front end of said purging air pipe 12 is exposed to flue gas and partly scribbles the high-temperature wearable layer.
The utility model parts adopt stainless steel.
The operation principle of the utility model is:
Spray gun can be designed to corresponding size according to actual needs, and nozzle can also be adjusted thereupon, also can under the situation that does not change the nozzle outward appearance, change performance parameters such as nozzle flow, operating pressure.
Liquid cap 4 is embedded in the purging air pipe 12 with air cap 7 nozzle assemblies such as grade, has avoided direct contact high temperature, high ash concentration, high flow rate flue gas.Prolong the service life of nozzle assembly, guaranteed the long-term stability operation of nozzle.
The utility model air purge pipe 12 arranges that along the spray gun body place dwindles outlet to the rifle head, forms high-speed air flow, can effectively nozzle be cooled off and purge.Avoided dust to deposit in nozzle.
The utility model adopts the fixed nozzle body, and the structure of movable liquid cap 4, air cap 7 is convenient to change nozzle, as long as guarantee that nozzle profile is consistent, the nozzle of replaceable different parameters has strengthened the widely applicable property of the utility model.
The utility model adopts all steel design, the use of stainless first gasket seal 6 and second gasket seal 9, guaranteed the utility model can be for a long time in high-temperature flue gas, stablize use.
The design of the utility model employing straight barrel type, design length only needs in certain distance, add cartridge support structure 15 as required, the distance between guaranteeing respectively to manage and the intensity of spray gun.
The above is merely an instantiation of the utility model, and unrestricted the utility model, and the utility model can have various changes and variation.All within the spirit and principle of this practical information, any modification of being done, improvement etc. all should be included within the protection domain of the utility model.
Claims (4)
1. air-cooled type air atomization spray gun; Comprise spray gun body and nozzle assembly; It is characterized in that: nozzle assembly is embedded in the purging air pipe (12) of spray gun body, and the spray gun body comprises aqueous suction pipes (1), and an end of aqueous suction pipes (1) is provided with aqueous suction pipes joint (2); Be connected through the female gas thread of aqueous suction pipes joint (2) and reducing agent; The other end is provided with lance head (3), the outer atomized air tube (11) that is provided with of aqueous suction pipes (1), and atomized air tube (11) one ends are connected through the female gas thread of atomizing air pipe joint (13) and atomizing air; The other end is connected with lance head (3); Also be provided with purging air pipe (12) between atomized air tube (11) and the spray gun body outer tube, an end of purging air pipe (12) is connected through the female gas thread of purging air pipe joint (14) and purging air, and aqueous suction pipes (1), atomized air tube (11) are connected through the detachable connector (18) of supporting construction (15) with band abrasionproof coating; Detachable connector (18) is connected through screw thread (16) with the spray gun body, and is provided with the 3rd gasket seal (17);
Nozzle assembly comprises liquid cap (4); Liquid cap (4) is connected with spray gun body male connection (5); And be provided with first gasket seal (6); Air cap (7) is connected through liquid cap male connection (8) with liquid cap (4), and is provided with second gasket seal (9), and air cap (7) is provided with air cap spout (10).
2. a kind of air-cooled type air atomization spray gun according to claim 1 is characterized in that: said supporting construction (15) adopts welding manner to guarantee purging air pipe (12) and firm being connected of the aqueous solution (2) with atomized air tube (11).
3. a kind of air-cooled type air atomization spray gun according to claim 1 is characterized in that: the front end of said purging air pipe (12) is exposed to flue gas and partly scribbles the high-temperature wearable layer.
4. a kind of air-cooled type air atomization spray gun according to claim 1 is characterized in that: the utility model parts adopt stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241163 CN202606018U (en) | 2012-05-25 | 2012-05-25 | Air-cooling type air-atomizing spraying gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241163 CN202606018U (en) | 2012-05-25 | 2012-05-25 | Air-cooling type air-atomizing spraying gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202606018U true CN202606018U (en) | 2012-12-19 |
Family
ID=47339751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220241163 Withdrawn - After Issue CN202606018U (en) | 2012-05-25 | 2012-05-25 | Air-cooling type air-atomizing spraying gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202606018U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688681A (en) * | 2012-05-25 | 2012-09-26 | 中国华能集团清洁能源技术研究院有限公司 | Air cooling type air atomization spray gun applicable to denitration by SNCR (selective non-catalytic reduction) method |
| CN103801475A (en) * | 2014-03-03 | 2014-05-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for cleaning gas channel branch pipe of atomizer |
| CN106163678A (en) * | 2014-02-21 | 2016-11-23 | 纽勤公司 | Liquid dispenser, nozzle assembly and assembling thereof and using method |
-
2012
- 2012-05-25 CN CN 201220241163 patent/CN202606018U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688681A (en) * | 2012-05-25 | 2012-09-26 | 中国华能集团清洁能源技术研究院有限公司 | Air cooling type air atomization spray gun applicable to denitration by SNCR (selective non-catalytic reduction) method |
| CN106163678A (en) * | 2014-02-21 | 2016-11-23 | 纽勤公司 | Liquid dispenser, nozzle assembly and assembling thereof and using method |
| CN103801475A (en) * | 2014-03-03 | 2014-05-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for cleaning gas channel branch pipe of atomizer |
| CN103801475B (en) * | 2014-03-03 | 2016-04-27 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of cleaning atomizer gas circuit arm |
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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: 20121219 Effective date of abandoning: 20140611 |
|
| RGAV | Abandon patent right to avoid regrant |