CN202419644U - Swirl burner with variable section - Google Patents
Swirl burner with variable section Download PDFInfo
- Publication number
- CN202419644U CN202419644U CN2012200013046U CN201220001304U CN202419644U CN 202419644 U CN202419644 U CN 202419644U CN 2012200013046 U CN2012200013046 U CN 2012200013046U CN 201220001304 U CN201220001304 U CN 201220001304U CN 202419644 U CN202419644 U CN 202419644U
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- China
- Prior art keywords
- wind
- section
- air duct
- turbulent burner
- cross
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- Expired - Fee Related
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Abstract
The utility model discloses a swirl burner with a variable section. The swirl burner comprises a central wind tube, wherein the outer part of the central wind tube is sleeved with a primary wind tube; an outlet position of the primary wind tube is sleeved with a separating sleeve pipe; the primary wind tube is separated into an inner layer of space and an outer layer of space by the separating sleeve pipe; and a sliding ring-shaped stop block is mounted on the central wind tube, and is connected with a pull rod provided with one end arranged at the outer part of the swirl burner. The swirl burner has the advantages that through additionally mounting the separating sleeve pipe in the outlet position of the primary wind tube to separate the primary wind tube into the inner layer and the outer layer, and mounting the sliding ring-shaped stop block on the central wind tube, when the wind speed needs to be reduced, the sliding ring-shaped stop block is pulled backwards, and channels of inner primary air and outer primary air are ventilated at the same time, so that the area is increased and the primary wind speed is reduced; and when the sliding ring-shaped stop block is pushed frontwards, the channel of the inner layer of primary wind is blocked and only the channel of the outer layer of primary air is ventilated, so that the area is reduced and the primary wind speed is improved.
Description
Technical field
The utility model relates to a kind of power station boiler burner, especially a kind of variable cross section turbulent burner.
Background technology
The station boiler burning coal is changeable at present; When bigger variation takes place in the flammability of fuel; Can produce considerable influence to the security of combustion stability or burner, one of measure that addresses this problem is an adjustment wind of burner outlet (wind powder mixture) speed.When ature of coal is caught fire easily, improve primary air velocity, make ignition point away from burner nozzle, guarantee burner safety; When ature of coal is difficult for catching fire, reduce the primary air velocity degree, make catch fire stable.Therefore existing burner all adopts the stationary exit cross section, can't adjust the primary air velocity degree through adjusting a wind discharge area, and therefore in coal significantly under the situation of change, adaptive capacity is relatively poor.
The utility model content
The purpose of the utility model is for overcoming the deficiency of above-mentioned prior art, a kind of variable cross section turbulent burner is provided, and it can change a wind and export wind speed through wind combustor discharge area of adjustment under the prerequisite that does not change a wind total amount.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of variable cross section turbulent burner; Comprise the center air duct; The outer cover of center air duct is the wind airduct once, is with the separation sleeve a wind wind tube outlet position, and this separation sleeve is separated into inside and outside two sheaf spaces with a wind airduct; The slip collar stop is housed on the air duct of center, and the slip collar stop is arranged at the outside pull bar of turbulent burner with an end and links to each other.
Said separation sleeve is divided into interior general mood stream with a wind between center air duct and the wind airduct and flows with an outer general mood; Wherein, The wind that an interior wind passes through for the space of separating between sleeve and the center air duct is separated sleeve and is linked to each other with the center air duct through floor.
The flow area of said interior general mood stream accounts for 20%～40% of a total wind flow area.
The length of said separation sleeve is 400～1000mm.
The said cross section that slides the annular retaining is trapezoidal, and its cross-sectional height is greater than the gap of separating between sleeve and the center air duct, so that wind passage in the complete shutoff.
Said cross-section lengths of sliding the annular retaining is 150～300mm.
The bottom surface of said sliding block cross section and the angle between the side are 20～50 degree.
The adjustable range of said pull bar is 500～1500mm.
The utility model is cut apart sleeve through installing additional in wind tube outlet position of turbulent burner, and is two-layer inside and outside a wind is divided into, and the slip collar stop is housed on the air duct of center.When needs reduced wind speed, the slip collar stop pulled back, and an inside and outside wind ventilates simultaneously, and area increases, and primary air velocity reduces; When the slip collar stop is pushed ahead, wind channel jam of internal layer, an only outer wind passage ventilates, and area dwindles, and primary air velocity improves.
Slip collar stop master in the utility model comes wind passage of occluding member, but not regulates breeze airflow concentration.
The beneficial effect of the utility model is:
Can in boiler running process,, in time regulate the outlet wind speed of a wind combustor according to the ature of coal situation of change.When using inflammable coal, can reduce the burner flow area, improve primary air velocity, prevent the burner scaling loss.When using unburnable coal, can enlarge the burner flow area, reduce primary air velocity, guarantee combustion stability.With certain 600MW of power plant unit boiler is example, and its design coal is a meager coal, and designing a wind outlet wind speed is 26m/s; The back changes because of the coal source, and boiler changes burning bituminous coal, and ignition distance obviously shifts to an earlier date; Wind snout scaling loss of part; The measure of taking in the maintenance is with wind snout area of fire clay occluding member, makes a wind snout wind speed be increased to 35m/s, has solved the wind combustor burning problems one time.But transform the back boiler like this and just can only use bituminous coal, can't use meager coal again,, carry out shutdown maintenance again, the labor manpower and materials if coal changes once more.If the employing patent art then can change according to coal in boiler running process, change the burner nozzle wind speed at any time, very convenient.
The utility model adopts the internal layer passage section of a wind combustor of shutoff, and benefit is:
(1) because the center air duct is arranged, is convenient to install sliding block, also easy access simultaneously;
(2) starting point of catching fire of turbulent burner is positioned at the outer ring of a wind exit flow, behind the shutoff internal layer passage section, does not influence former burner fire behaviour basically, helps guaranteeing catching fire and steady combustion of a general mood stream;
(3) do not influence the investigative range of former burner flame detecting probe.
The flow area of a general mood stream accounts for 20%～40% of a total wind flow area in the shutoff; Can improve primary air velocity 25%～66%; Such as former design wind speed is 25m/s, can reach 31m/s～41m/s after the shutoff, can satisfy the requirement that conventional coal changes basically.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the sliding block cross sectional representation;
1. outer secondary wind air-flows wherein, 2. in the secondary wind air-flow, 3. outer general mood stream, 4. interior general mood stream is 5. separated sleeve, 6. slip collar stop, 7. pull bar, 8. center air duct, 9. wind inlet, 10. a wind airduct.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Like Fig. 1, shown in 2; A kind of variable cross section turbulent burner comprises center air duct 8, and the outer cover of center air duct 8 is wind airduct 10 once; Be with separation sleeve 5 a wind wind tube outlet position; This separation sleeve 5 is separated into inside and outside two sheaf spaces with a wind airduct 10, and slip collar stop 6 is housed on center air duct 8, and slip collar stop 6 is arranged at the outside pull bar 7 of turbulent burner with an end and links to each other.
Said separation sleeve 5 is divided into interior general mood stream 4 and outer general mood stream 3 with a wind between center air duct 8 and the wind airduct 10; Wherein, The wind that interior general mood stream 4 passes through for the space of separating between sleeve 5 and the center air duct 8, separation sleeve 5 pass through floor and link to each other with center air duct 8.
The flow area of said interior general mood stream 4 accounts for 20%～40% of a total wind flow area.
The length M of said separation sleeve 5 is 400～1000mm.
The said cross section that slides annular retaining 6 is trapezoidal, and (H-h＞5mm) is so that interior wind passage of shutoff fully greater than separating gap h between sleeve 5 and the center air duct 8 for its cross-sectional height H.
The said cross-section lengths L that slides annular retaining 6 is 150～300mm.
The bottom surface of said sliding block 6 cross sections and the angle β between the side are 20～50 degree.Sliding block 6 outer walls carry out Wear-resistant Treatment.
The adjustable range of said pull bar 7 is 500～1500mm.
The utility model is cut apart sleeve through installing additional in wind tube outlet position of turbulent burner, and is two-layer inside and outside a wind is divided into, and the slip collar stop is housed on the air duct of center.When needs reduced wind speed, the slip collar stop pulled back, and an inside and outside wind ventilates simultaneously, and area increases, and primary air velocity reduces; When the slip collar stop is pushed ahead, wind channel jam of internal layer, an only outer wind passage ventilates, and area dwindles, and primary air velocity improves.
Slip collar stop master in the utility model comes wind passage of occluding member, but not regulates breeze airflow concentration.
Use is following:
The secondary wind of turbulent burner is divided into two-way and gets into burner hearth from outer secondary wind air-flow 1 and interior secondary wind air-flow 2, and therefore a wind also be divided into two-way because the sleeve 5 of separation is arranged, and wind gets into burner hearth from a wind inlet 9 through outer general mood stream 3 and interior general mood stream 4.In running, improve primary air velocity if desired, then pushing drawing rod 7, and air duct 8 slides along the center to make slip collar stop 6, and contacts with separating sleeve 5, thus a wind internal layer of shutoff passage.Reduce primary air velocity if desired, then spur pull bar 7, air duct 8 slides along the center to make slip collar stop 6, and separates with separation sleeve 5, thereby makes a wind internal layer passage unimpeded.
Claims (8)
1. variable cross section turbulent burner; Comprise the center air duct, the outer cover of center air duct is the wind airduct once, it is characterized in that; Be with the separation sleeve a wind wind tube outlet position; This separation sleeve is separated into inside and outside two sheaf spaces with a wind airduct, and the slip collar stop is housed on the air duct of center, and the slip collar stop is arranged at the outside pull bar of turbulent burner with an end and links to each other.
2. variable cross section turbulent burner as claimed in claim 1; It is characterized in that; Said separation sleeve is divided into interior general mood stream with a wind between center air duct and the wind airduct and flows with an outer general mood; Wherein, the wind that an interior wind passes through for the space of separating between sleeve and the center air duct is separated sleeve and is linked to each other with the center air duct through floor.
3. variable cross section turbulent burner as claimed in claim 2 is characterized in that, the flow area of said interior general mood stream accounts for 20%～40% of a total wind flow area.
4. variable cross section turbulent burner as claimed in claim 2 is characterized in that, the length of said separation sleeve is 400～1000mm.
5. variable cross section turbulent burner as claimed in claim 1 is characterized in that, the said cross section that slides the annular retaining is trapezoidal, and its cross-sectional height is greater than the gap of separating between sleeve and the center air duct.
6. variable cross section turbulent burner as claimed in claim 5 is characterized in that, said cross-section lengths of sliding the annular retaining is 150～300mm.
7. variable cross section turbulent burner as claimed in claim 6 is characterized in that, the bottom surface of said sliding block cross section and the angle between the side are 20～50 degree.
8. variable cross section turbulent burner as claimed in claim 1 is characterized in that, the adjustable range of said pull bar is 500～1500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200013046U CN202419644U (en) | 2012-01-04 | 2012-01-04 | Swirl burner with variable section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200013046U CN202419644U (en) | 2012-01-04 | 2012-01-04 | Swirl burner with variable section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202419644U true CN202419644U (en) | 2012-09-05 |
Family
ID=46744403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200013046U Expired - Fee Related CN202419644U (en) | 2012-01-04 | 2012-01-04 | Swirl burner with variable section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202419644U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506426A (en) * | 2012-01-04 | 2012-06-20 | 山东中实易通集团有限公司 | Variable-section cyclone burner |
| CN111068206A (en) * | 2020-02-26 | 2020-04-28 | 山东华盛农业药械有限责任公司 | Large air volume blowing pipe combination |
-
2012
- 2012-01-04 CN CN2012200013046U patent/CN202419644U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506426A (en) * | 2012-01-04 | 2012-06-20 | 山东中实易通集团有限公司 | Variable-section cyclone burner |
| CN111068206A (en) * | 2020-02-26 | 2020-04-28 | 山东华盛农业药械有限责任公司 | Large air volume blowing pipe combination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20150104 |
|
| EXPY | Termination of patent right or utility model |