CN102380307A - Multi-nozzle ejector with inner flexible connection structure - Google Patents
Multi-nozzle ejector with inner flexible connection structure Download PDFInfo
- Publication number
- CN102380307A CN102380307A CN2011102479394A CN201110247939A CN102380307A CN 102380307 A CN102380307 A CN 102380307A CN 2011102479394 A CN2011102479394 A CN 2011102479394A CN 201110247939 A CN201110247939 A CN 201110247939A CN 102380307 A CN102380307 A CN 102380307A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- sleeve
- inner sleeve
- ejector
- outer layer
- 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
- 238000005507 spraying Methods 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 12
- 239000002826 coolant Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Nozzles (AREA)
Abstract
The invention relates to a piece of boiler burning equipment, which aims at to providing a multi-nozzle ejector with an inner flexible connection structure. The multi-nozzle ejector with the inner flexible connection structure comprises an outer sleeve and at least one inner sleeve which are coaxially arranged. The space formed by the outer sleeve and the inner sleeve is adopted as a working medium channel, and the outer sleeve is provided with a plurality of nozzles along the length of the ejector. The nozzle is not contacted with the inner sleeve, and the joints on each nozzle and each inner sleeve are connected through a flexible pipeline. The invention ensures the free expansion of different sleeve layers in the ejector through changing the method for fixing the nozzles on the ejector, the method for feeding the ejecting medium to the nozzle and the inner welding method of the sleeves, eliminates the possibility of the damages of the inner nozzles and the connection pieces caused by the different expansion quantity of the different sleeves, and directly improves the service time of the equipment and the adaptability under adverse conditions.
Description
Technical field
The present invention relates to boiler combustion equipment, particularly a kind of multiple nozzle spraying device that possesses the inner flexible syndeton.
Background technology
In the large-sized boiler SNCR method denitration technology, use injector at present through regular meeting.This is a kind of plug-in type injector with cooling medium outside, and is similar with soot blower.Injector divides two kinds of single injector and multiinjectors: wherein the former is arranged in the spray gun end with single spray orifice, and the latter arranges nozzle along the spray gun outer wall.
The structure more complicated of multiple nozzle spraying device, usually by interior, in, which floor sleeve pipe is formed outward, a plurality of nozzles embed in the outermost layer casing walls, and are connected through welding manner with intermediate casing, thus the medium of realization intermediate casing is to the conveying of nozzle.Can carry out the long distance of single-phase or multiphase medium and spray, to satisfy the better mixing of denitrifier and flue gas according to the demands of different such as area coverage of built-in length, required injection working medium through this injector.But, if it is more to spray the kind of working medium, then mean the increase of the intermediate casing number of plies, correspondingly, then need nozzle to pass one deck intermediate casing at least to realize and being connected of center sleeve.
Because multiple jet needs long-term work in high-temperature boiler, in its sleeve pipe, need to arrange cooling water water inlet and return water system.Owing to have the huge temperature difference between the cooling water temperature in the external firing high ambient temperature of multiple nozzle spraying device and its inner sleeve, cause the swell increment between the internal and external casing different, be easy to cause junction fracture between nozzle and the inner sleeve, damage.Simultaneously, in running, also need keep watch on cooling water flow and temperature constantly, note abnormalities in time to return and remove injector, automatic control system is had higher requirement.
For these reasons, a kind of internal and external casing swell increment different defects that overcomes is provided, seems very necessary with the technology of avoiding the injector deformed damaged.
Summary of the invention
The technical problem that the present invention will solve is, overcomes deficiency of the prior art, and a kind of multiple nozzle spraying device that possesses the inner flexible syndeton is provided.
Be the technical solution problem, technical scheme provided by the invention is:
A kind of multiple nozzle spraying device that possesses the inner flexible syndeton is provided; Comprise outer layer sleeve and the coaxial sheathed inner sleeve of one deck at least; The space that outer layer sleeve and inner sleeve form each other is as the working medium passage, and outer layer sleeve upper edge injector length is embedded plurality of nozzles; Do not contact mutually between said nozzle and the inner sleeve, be connected by flexible conduit between the interface on each nozzle and each inner sleeve.
As improvement, said flexible conduit is the pipeline that is bending, fold back shape or arranges around shape.
As improvement, between outer layer sleeve and adjacent inner sleeve, gripper shoe is set along the injector length direction, said flexible conduit is located between gripper shoe and the outer layer sleeve.
As improvement, this injector outer layer sleeve and each inner sleeve are only fixed in the root weld of injector, and does not weld at other positions.
Beneficial effect of the present invention is:
Through welding manner in change injector top nozzle fixed form, the mode of spraying working medium access nozzle and the sleeve pipe; Guaranteed the free wxpansion of different casing layers in the injector; Eliminated owing to the different inwardly projecting orifices that cause of swell increment of different sleeve pipes and the possibility of connector damage, directly improved the service life of equipment and the adaptive capacity under the unfavorable operating mode.
Description of drawings
The structural representation of multiple nozzle spraying device in Fig. 1 present embodiment;
The part side view of Fig. 2 injector working medium inlet;
Fig. 3 working medium passage and nozzle connected mode sketch map;
Fig. 4 is the cross sectional representation of working medium passage;
Fig. 5 is working medium pipeline and nozzle connected mode sketch map.
Reference numeral:
1 injector working medium intake assembly (seeing Fig. 2 for details), 2 cooling medium flow channels, 3 atomizing mediums (compressed air) passage, 4 cooling mediums flow out arrangement space, 8 nozzles and working medium coupling assembling (seeing Fig. 3 and Fig. 4 for details), 9 nozzles, 10 injector head, 11 atomizing mediums and nozzle tube connector, 12 reducing agents and nozzle tube connector, 13 gripper shoes of pipeline, 5 reducer channels, 6 reducing agent interfaces, 7 connection pipelines; A, b, c, d are respectively coolant inlet, reducing agent import, atomizing medium import, coolant outlet among Fig. 2.
The specific embodiment
Be example explanation practical implementation method with a kind of typical strength atomizing multiple nozzle spraying device below:
This multiple nozzle spraying device comprises outer layer sleeve and 3 layers of coaxial sheathed inner sleeve, and each layer sleeve pipe is cylindrical tube.The space that outer layer sleeve and inner sleeve form each other is as the working medium passage, and ecto-entad is followed successively by: cooling medium flow channel 2, atomizing medium passage 3, reducer channel 5 and cooling medium flow pass 4; Outer layer sleeve upper edge injector length is embedded plurality of nozzles 9; Do not contact mutually between nozzle 9 and the inner sleeve, realize being connected by flexible conduit (atomizing medium and nozzle tube connector 11, reducing agent and nozzle tube connector 12) between the interface on each nozzle 9 and atomizing medium passage 3, the reducer channel 5.
As shown in Figure 4, (arrangement space 7 that connects pipeline) is provided with gripper shoe 13 along the injector length direction between outer layer sleeve and adjacent inner sleeve, and flexible conduit is located between gripper shoe 13 and the outer layer sleeve.Gripper shoe 13 is the steel plate of tiling, is convenient to the crooked and fixing of atomizing medium and nozzle tube connector 11, reducing agent and nozzle tube connector 12.
As shown in Figure 5, said flexible conduit is bending arranges, can certainly be to be the fold back shape or to arrange around shape.
The high temperature resistant part material that the multiple nozzle spraying device gets into boiler adopts 316L (stainless steel), does not have annexation between nozzle and the inner sleeve, can prevent like this to cause the different and defective nozzle of swell increment owing to temperature difference is different with outer layer sleeve and inner sleeve.Outer layer sleeve and each inner sleeve are only fixed in the root weld of injector, and does not weld at other positions, guarantee that outer layer sleeve and inner sleeve can be distinguished freely to stretch.
Atomizing medium from separately interface is drawn and is got into nozzle with nozzle tube connector 12 with the mode of scalable bend pipe with nozzle tube connector 11, reducing agent and mixes, thereby can utilize the compensation naturally of pipe bending to overcome the pipeline differential expansion that the inner and outer pipes temperature difference causes.
The occupation mode of multiple nozzle spraying device is following:
Injector gets in the high-temperature boiler with the plant equipment transmission; Cooling water, reducing agent and the atomizing medium a from Fig. 2, b, c, d mouth respectively get into injector; Various media get into passage separately respectively; Atomizing medium and reducing agent enter into nozzle 9 with nozzle tube connector 11, reducing agent with nozzle tube connector 12 from atomizing medium respectively to be mixed, and sprays into the operating point after the atomizing.
The invention solves large-sized boiler furnace injection device because long-term work causes injector to damage easily under hot environment; Utilize internal and external casing free wxpansion and adopt special crooked gas-liquid pipeline to be connected the mode of nozzle; Prevented because the sleeve pipe internal-external temperature difference is excessive, caused nozzle and injector internals owing to the even problem that is damaged of non-homogeneous expansion.
The above only is one of several case study on implementation of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferable case study on implementation; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; Make a little change or modification when the structure of utilizing above-mentioned announcement and technology contents, be regarded as the equivalent case study on implementation of equivalent variations.Every content that does not break away from technical scheme of the present invention, any simple modification, equivalent variations and modification according to technical spirit of the present invention is done above case study on implementation all still belong in the technical scheme scope of the present invention.
Claims (3)
1. the multiple nozzle spraying device that possesses the inner flexible syndeton comprises outer layer sleeve and the coaxial sheathed inner sleeve of one deck at least, and the space that outer layer sleeve and inner sleeve form each other is as the working medium passage, and outer layer sleeve upper edge injector length is embedded plurality of nozzles; It is characterized in that, do not contact mutually between said nozzle and the inner sleeve, be connected by flexible conduit between the interface on each nozzle and each inner sleeve.
2. multiple nozzle spraying device according to claim 1 is characterized in that, said flexible conduit is the pipeline that is bending, fold back shape or arranges around shape.
3. according to claim 1 or 2 any described multiple nozzle spraying devices, it is characterized in that between outer layer sleeve and adjacent inner sleeve, along the injector length direction gripper shoe is set, said flexible conduit is located between gripper shoe and the outer layer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110247939 CN102380307B (en) | 2011-08-24 | 2011-08-24 | Multi-nozzle ejector with inner flexible connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110247939 CN102380307B (en) | 2011-08-24 | 2011-08-24 | Multi-nozzle ejector with inner flexible connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102380307A true CN102380307A (en) | 2012-03-21 |
| CN102380307B CN102380307B (en) | 2013-08-07 |
Family
ID=45820385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110247939 Active CN102380307B (en) | 2011-08-24 | 2011-08-24 | Multi-nozzle ejector with inner flexible connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102380307B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106029208A (en) * | 2015-01-20 | 2016-10-12 | 通用电器技术有限公司 | Boiler and device for selective non catalytic reduction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459089Y (en) * | 2000-12-29 | 2001-11-14 | 魏仕英 | Water sprayer with multiple diffusing tube |
| JP3376511B2 (en) * | 1995-12-21 | 2003-02-10 | 日立造船株式会社 | Ammonia gas injection device in denitration equipment |
| CN101003755A (en) * | 2006-01-19 | 2007-07-25 | 神华集团有限责任公司 | Gasification stove with multi nozzle, and gasification method |
| CN202224055U (en) * | 2011-08-24 | 2012-05-23 | 浙江百能科技有限公司 | Multi-nozzle jet with internal flexible connecting structure |
-
2011
- 2011-08-24 CN CN 201110247939 patent/CN102380307B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3376511B2 (en) * | 1995-12-21 | 2003-02-10 | 日立造船株式会社 | Ammonia gas injection device in denitration equipment |
| CN2459089Y (en) * | 2000-12-29 | 2001-11-14 | 魏仕英 | Water sprayer with multiple diffusing tube |
| CN101003755A (en) * | 2006-01-19 | 2007-07-25 | 神华集团有限责任公司 | Gasification stove with multi nozzle, and gasification method |
| CN202224055U (en) * | 2011-08-24 | 2012-05-23 | 浙江百能科技有限公司 | Multi-nozzle jet with internal flexible connecting structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106029208A (en) * | 2015-01-20 | 2016-10-12 | 通用电器技术有限公司 | Boiler and device for selective non catalytic reduction |
| US10434470B2 (en) | 2015-01-20 | 2019-10-08 | General Electric Technology Gmbh | Boiler and device for selective non catalytic reduction |
| CN106029208B (en) * | 2015-01-20 | 2020-10-02 | 通用电器技术有限公司 | Boiler and device for selective non-catalytic reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102380307B (en) | 2013-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101749711B (en) | Combustor housing for combustion of low-BTU fuel gases and methods of making and using the same | |
| US8037690B2 (en) | Fuel manifold for gas turbine engine | |
| CN101509670B (en) | Fuel nozzle for a gas turbine engine and method for fabricating the same | |
| CN102537968B (en) | Late lean injection manifold | |
| US8894407B2 (en) | Combustor and method for supplying fuel to a combustor | |
| CN201535508U (en) | Gas combustor | |
| CN104379879A (en) | Fluid conduit | |
| JP2009103133A5 (en) | ||
| EP1918561A3 (en) | Combustion nozzle fluidic injection assembly | |
| CN102834168A (en) | Spray system and method for spraying a secondary fluid into a primary fluid | |
| CN106050431A (en) | Integrated dual fuel delivery system | |
| CN102162643A (en) | Fuel injector nozzle | |
| CN204017797U (en) | Feed distributor for ammonia oxidation reactor | |
| CN103104917A (en) | Combustor and method for supplying fuel to a combustor | |
| CN102016410A (en) | Radiant coolers and methods for assembling same | |
| CN102380307B (en) | Multi-nozzle ejector with inner flexible connection structure | |
| CN202224055U (en) | Multi-nozzle jet with internal flexible connecting structure | |
| US20100229555A1 (en) | Fuel manifold with reduced losses | |
| CN102162640A (en) | Fuel injector nozzle | |
| CN102472485A (en) | Stabilizing the flame of a burner | |
| RU2573072C2 (en) | Burner nozzle and coal gasification plant | |
| CN101749725B (en) | Fuel transport system and assembling method thereof | |
| CN102287826B (en) | Combustion nozzle and coal gasification furnace | |
| CN215721019U (en) | Gas water-sealed tank with uninterrupted flow guide pipe | |
| CN202182473U (en) | Combustion nozzle and coal gasifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170420 Address after: 310007 Zhejiang, Hangzhou, Wensanlu Road, China, No., Huaxing Times Square, block C, building 2 Co-patentee after: Zhejiang University Patentee after: Zhejiang Pyneo Technology Co., Ltd. Address before: 310007 Zhejiang, Hangzhou, Wensanlu Road, China, No., Huaxing Times Square, block C, building 2 Patentee before: Zhejiang Pyneo Technology Co., Ltd. |