CN103028506B - Gas-liquid self-locking denitration nozzle - Google Patents
Gas-liquid self-locking denitration nozzle Download PDFInfo
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- CN103028506B CN103028506B CN201210535738.9A CN201210535738A CN103028506B CN 103028506 B CN103028506 B CN 103028506B CN 201210535738 A CN201210535738 A CN 201210535738A CN 103028506 B CN103028506 B CN 103028506B
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Abstract
The invention relates to a gas-liquid self-locking denitration nozzle, which comprises a nozzle body and a spray head, wherein a slide block and a filter are additionally arranged in a gas-liquid mixed nozzle. When in normal work, gas and liquid are collided and mixed in the nozzle body and then atomized and sprayed. When a gas circuit stops the gas supply, the slide block automatically switches off the liquid supply of a liquid circuit, or when no gas supply exists in the gas circuit, the supply of the liquid in the liquid circuit is switched off by the slide block. Meanwhile, since certain impurities exist in the gas and the liquid, the filter is additionally arranged on an inlet of the nozzle body so as to filter the impurities and prevent the impurities from blocking fine holes in the nozzle. The gas-liquid self-locking denitration nozzle can be used for different gas-liquid mixed nozzles requiring the self-locking situation of the liquid circuit, has characteristics of compactness in structure and short self-locking response time and can prevent the nozzle from being blocked.
Description
Technical field
The present invention relates to a kind of long and short rifle gas-liquid self-locking spray nozzle for denitration.
Background technology
At present, the long and short rifle nozzle of denitration is adopted all not have gas-liquid auto-lock function both at home and abroad.Therefore, spray gun is in thermal power plant's use procedure, and because the reasons such as maloperation cause gas circuit closedown, fluid path is not closed, and fluid path liquid is directly injected on high-temperature boiler water-cooling wall, causes Waterwall tube failure, causes greater loss to power plant.Meanwhile, owing to there is certain impurity in gas and liquid, the narrowed flow path in meeting plug nozzle, Long-Time Service obviously can reduce denitration effect.Therefore, be necessary to design a kind of new product, overcome the deficiency of existing product, namely ensure that fluid path is in the state simultaneously responded with gas circuit all the time.
Summary of the invention
Lack gas-liquid auto-lock function with long and short rifle nozzle for solving current denitration and cause the technical problem of Waterwall tube failure, the invention provides a kind of nozzle adapting to the denitration spray gun of boiler of power plant safe operation.
Technical solution of the present invention is:
A kind of gas-liquid self-locking denitration nozzle, comprise nozzle body and shower nozzle, described nozzle body is divided into liquid approach section, gas-liquid mixed section, ejection section according to the flow direction of liquid, described shower nozzle is arranged in the cavity of ejection section, the flow channel for liquids connected is provided with in described liquid approach section, gas-liquid mixed section and shower nozzle, the both sides of described gas-liquid mixed section are provided with gas flow, and described gas flow and flow channel for liquids converge in gas-liquid mixed section
Its special character is: be provided with slideway between described liquid approach section and gas-liquid mixing section, slide block is provided with in described slideway, the aperture connected with fluid passage is provided with in described slide block, described slide block is divided into hermetic unit and lock portion, described hermetic unit and slideway suitable, described lock portion and slideway adopt matched in clearance.
Above-mentioned slideway is divided into cylindrical slideway and semi-cylindrical slideway, the hermetic unit of described slide block adopts cylinder, the lock portion of described slide block adopts semicolumn, the column part of described slide block is positioned at cylindrical slideway, described semicolumn is positioned at semi-cylindrical slideway, and described semi-cylindrical slideway and semicolumn adopt matched in clearance.
Also comprise filter, described filter is arranged on liquid approach section entrance and gas access end.
The double-layer leaching net that above-mentioned filter comprises filter screen skeleton and is welded on filter screen skeleton, described filter screen skeleton is threaded with nozzle body.
The present invention's beneficial effect is compared with prior art:
1, a kind of gas-liquid self-locking of the present invention denitration nozzle, is provided with slide block in nozzle body, and when gas circuit is interrupted suddenly, fluid path can be closed automatically, to prevent Liquid inject on high-temperature boiler water-cooling wall, causes Waterwall tube failure.
2, a kind of gas-liquid self-locking of the present invention denitration nozzle, slide block is divided into hermetic unit and lock portion, when ensureing hydraulic seal, realizes the locking of slide block in radial direction, avoid making due to sliding fast rotation being arranged on aperture on slide block and fluid passage misplaces, cause fluid passage to block.
3, a kind of gas-liquid self-locking of the present invention denitration nozzle, slideway is divided into cylindrical slideway and semi-cylindrical slideway, and the hermetic unit of slide block adopts cylinder, and the lock portion of slide block adopts semicolumn, the more convenient processing of such structure.
4, a kind of gas-liquid self-locking of the present invention denitration nozzle, is provided with filter at liquid approach section entrance and gas access end, and the impurity that can exist in filtering gas and liquid, prevents the narrowed flow path in nozzle from blocking, extend the service time of nozzle.
5, a kind of gas-liquid self-locking of the present invention denitration nozzle, filter 2 adopts with nozzle body 1 and is threaded, and is convenient for changing.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention;
Fig. 2 is the front view of slide block;
Fig. 3 is the top view of slide block.
Detailed description of the invention
As shown in Figure 1, a kind of gas-liquid self-locking denitration nozzle, comprise nozzle body 1 and shower nozzle 4, nozzle body 1 is divided into liquid approach section 11, gas-liquid mixed section 12, ejection section 13 according to the flow direction of liquid, shower nozzle 4 is arranged in the cavity 16 of ejection section, be provided with the flow channel for liquids 15 connected in liquid approach section 11, gas-liquid mixed section 12 and shower nozzle 4, the both sides of gas-liquid mixed section 12 are provided with gas flow 6, and gas flow 6 and flow channel for liquids 15 converge in gas-liquid mixed section.
Slideway 14 is provided with between liquid approach section 11 and gas-liquid mixing section 12, be provided with slide block 5 in slideway, be provided with the aperture connected with fluid passage in slide block, slide block is divided into hermetic unit and lock portion, hermetic unit and slideway suitable, lock portion and slideway adopt matched in clearance.
Slide block only moves in slideway.The sliding fast cylinder that adopts combines with semicolumn, and the size of cylinder can not be excessive or too small, can have impact to the response time of slide block.Slide block limited location designs, and restriction slide block rotates, in order to avoid affect fluid path flowing.Slide block has aperture, and when the fluid path through hole of aperture and nozzle body is through, fluid path is opened; Otherwise then fluid path is closed.Slide block controls opening and closedown of fluid path by moving left and right in slideway.By the pressure match of gas circuit and fluid path, slide block is made to move freely the open and close automatically controlling fluid path.
During normal work, gas and liquid impingement mix in nozzle body, is then atomized ejection.When gas circuit stop air feed, slide block cuts off the supply of fluid path liquid automatically, or when gas circuit not yet air feed time, the liquid in fluid path by slide block cut off supply.
Meanwhile, due to certain impurity can be there is in gas and liquid, at nozzle body inlet place, increase filter and be used for impurity screening, prevent the pore in impurity plug nozzle.
The double-layer leaching net that filter comprises filter screen skeleton and is welded on filter screen skeleton, can simultaneously to the filtering flow of fluid path and gas circuit.Filter is connected with nozzle body by the screw thread on filter screen skeleton, and compact conformation is for convenience detach.
Claims (4)
1. a gas-liquid self-locking denitration nozzle, comprise nozzle body (1) and shower nozzle (4), described nozzle body (1) is divided into liquid approach section (11) according to the flow direction of liquid, gas-liquid mixed section (12), ejection section (13), described shower nozzle (4) is arranged in the cavity (16) of ejection section, described liquid approach section (11), the flow channel for liquids (15) connected is provided with in gas-liquid mixed section (12) and shower nozzle (4), the both sides of described gas-liquid mixed section (12) are provided with gas flow (6), described gas flow (6) and flow channel for liquids (15) converge in gas-liquid mixed section,
It is characterized in that: between described liquid approach section (11) and gas-liquid mixing section (12), be provided with slideway (14), slide block (5) is provided with in described slideway, the aperture connected with fluid passage is provided with in described slide block, described slide block is divided into hermetic unit and lock portion, described hermetic unit and slideway suitable, described lock portion and slideway adopt matched in clearance.
2. a kind of gas-liquid self-locking denitration nozzle according to claim 1, it is characterized in that: described slideway is divided into cylindrical slideway and semi-cylindrical slideway, the hermetic unit of described slide block adopts cylinder, the lock portion of described slide block adopts semicolumn, the column part of described slide block is positioned at cylindrical slideway, described semicolumn is positioned at semi-cylindrical slideway, and described semi-cylindrical slideway and semicolumn adopt matched in clearance.
3. a kind of gas-liquid self-locking denitration nozzle according to claim 1 and 2, it is characterized in that: also comprise filter (2), described filter (2) is arranged on liquid approach section (11) entrance and gas access end.
4. a kind of gas-liquid self-locking denitration nozzle according to claim 3, it is characterized in that: described filter (2) comprises filter screen skeleton (21) and is welded on the double-layer leaching net (22) on filter screen skeleton, and described filter screen skeleton (21) is threaded with nozzle body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210535738.9A CN103028506B (en) | 2012-12-12 | 2012-12-12 | Gas-liquid self-locking denitration nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210535738.9A CN103028506B (en) | 2012-12-12 | 2012-12-12 | Gas-liquid self-locking denitration nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103028506A CN103028506A (en) | 2013-04-10 |
| CN103028506B true CN103028506B (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210535738.9A Active CN103028506B (en) | 2012-12-12 | 2012-12-12 | Gas-liquid self-locking denitration nozzle |
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| Country | Link |
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| CN (1) | CN103028506B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000706A (en) * | 2016-07-25 | 2016-10-12 | 西安航天源动力工程有限公司 | Desulfurization waste water multi-nozzle long-gun ejector |
| CN110743446B (en) * | 2019-09-30 | 2023-07-14 | 中国矿业大学 | Laboratory research device for coal-electricity integrated three-waste-based foaming material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073862A (en) * | 1998-09-16 | 2000-06-13 | Westport Research Inc. | Gaseous and liquid fuel injector |
| US6257370B1 (en) * | 1996-06-04 | 2001-07-10 | Rebs Zentralschmiertechnik Gmbh | Process for dividing a viscous liquid conveyed by a flow of gas |
| CN101371969A (en) * | 2008-10-09 | 2009-02-25 | 江苏中科节能环保技术有限公司 | Reducing reagent nozzle for denitration by SNCR method |
| CN202427576U (en) * | 2011-11-28 | 2012-09-12 | 向林 | Automatic electronic-control nozzle device |
| CN202983931U (en) * | 2012-12-12 | 2013-06-12 | 中国航天科技集团公司第六研究院第十一研究所 | Gas-liquid self-locking denitration spraying nozzle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6161778A (en) * | 1999-06-11 | 2000-12-19 | Spraying Systems Co. | Air atomizing nozzle assembly with improved air cap |
-
2012
- 2012-12-12 CN CN201210535738.9A patent/CN103028506B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257370B1 (en) * | 1996-06-04 | 2001-07-10 | Rebs Zentralschmiertechnik Gmbh | Process for dividing a viscous liquid conveyed by a flow of gas |
| US6073862A (en) * | 1998-09-16 | 2000-06-13 | Westport Research Inc. | Gaseous and liquid fuel injector |
| CN101371969A (en) * | 2008-10-09 | 2009-02-25 | 江苏中科节能环保技术有限公司 | Reducing reagent nozzle for denitration by SNCR method |
| CN202427576U (en) * | 2011-11-28 | 2012-09-12 | 向林 | Automatic electronic-control nozzle device |
| CN202983931U (en) * | 2012-12-12 | 2013-06-12 | 中国航天科技集团公司第六研究院第十一研究所 | Gas-liquid self-locking denitration spraying nozzle |
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|---|---|
| CN103028506A (en) | 2013-04-10 |
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