CN2207522Y - Nozzle button of circulating fluidizing bed boiler - Google Patents
Nozzle button of circulating fluidizing bed boiler Download PDFInfo
- Publication number
- CN2207522Y CN2207522Y CN 94236043 CN94236043U CN2207522Y CN 2207522 Y CN2207522 Y CN 2207522Y CN 94236043 CN94236043 CN 94236043 CN 94236043 U CN94236043 U CN 94236043U CN 2207522 Y CN2207522 Y CN 2207522Y
- Authority
- CN
- China
- Prior art keywords
- overcoat
- interior cover
- wall
- blast cap
- cover
- 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.)
- Expired - Fee Related
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a nozzle button of a circulating fluidizing bed boiler. The utility model comprises an inner sleeve and an outer sleeve. The utility model is characterized in that the circumference wall of the upper part of the inner sleeve is provided with a ventilation hole, and the circumference wall of the lower part of the outer sleeve is provided with the ventilation hole. The outer wall of the top of the inner sleeve is contacted with the inner wall of the upper part of the outer sleeve, and the distance difference of the upper edge of the ventilation hole on the outer sleeve and the lower edge of the ventilation hole on the inner sleeve is 30-80 mm. The wind supply enter into an interlayer from the ventilation hole of the inner sleeve, after the wind gathers at the interlayer, the wind can be allocated on the ventilation hole of the outer sleeve. Then, the wind is blown into a boiler hearth. The utility model changes the previous wind supplying channel, which avoids clogging and slag leakage phenomena of the nozzle button. The utility model is a quite ideal novel nozzle button.
Description
The utility model relates to the annex on a kind of combustion apparatus, more properly say it is blast cap on the CFBB.
Used blast cap has two kinds on the existing CFBB, a kind of is individual layer, uniform 16 or 24 apertures in outside, this blast cap scaling loss is quite serious, when blast in service is unstable, there is lime-ash to enter air compartment from the blast cap aperture, cause the air compartment accumulated slag, the lime-ash that wind rises in the air compartment can cause the blast cap resistance to increase the little hole plug of blast cap again, air quantity reduces, and cools off deficiency and scaling loss; Another kind is the strap clamp layer, blower fan directly enters overcoat with wind from interior cover centre bore, overcoat leaves flat seam, wind is blown into burner hearth again from flat seam, and this blast cap can reduce the accumulated slag of air compartment to a certain extent, but effect is also undesirable, and the blast cap resistance is big, the power consumption of blower fan can rise, in case the overcoat scaling loss, the lime-ash air compartment that still can bleed.Because the stifled ophthalmorrhea slag phenomenon of existing blast cap is serious, the blast cap cycle of operation is short, often causes frequent start-stop, greatly reduces the service life of boiler plant.
The purpose of this utility model is intended to improve above-mentioned deficiency, a kind of design of inside and outside cover being carried out separate type is provided, interior cover is by opening circular hole, wind is delivered to overcoat, overcoat is also opened aperture, makes wind be blown into burner hearth by aperture, can thoroughly avoid the lime-ash air compartment that bleeds like this, after the overcoat scaling loss, interior cover aperture still can be finished the novel blast cap of ventilation fluidisation well.
In order to achieve the above object, the utility model improves on the prior art basis and realizes, cover 2 in it has, overcoat 1, cover 2 top circumferential wall are provided with air vent 8 in being characterized in, the lower circumference wall of overcoat 1 is provided with air vent 6, interior cover 2 top exterior walls contact with the inwall on overcoat 1 top, the difference of the upper edge of the air vent 6 on the overcoat 1 and the lower edge of the air vent 8 on the interior cover 2 distance is 30-80mm, overcoat 1 first half is closed hemispherical, the middle part is a cylindrical shape, bottom cylindrical overstriking, air vent 6 just is located at the position of overcoat 1 bottom cylindrical overstriking.The inwall of overcoat 1 bottom is provided with overcoat internal thread 10, the middle part outer wall overstriking of interior cover 2, cover external screw thread 9 in the middle part outer wall is provided with, overcoat 1 is provided with the cutter rib for the below circumferential wall of hemispherical position, be stuck in by specific purpose tool on the cutter rib of overcoat 1, by internal and external threads overcoat 1 is screwed on the interior cover 2, the outer wall at cover 2 tops contacts to best with the inwall on overcoat 1 top in just making.In order to prevent the overcoat scaling loss, can be provided with top board 11 at interior cover 2 tops, top board 11 is provided with apical pore 7, in case the overcoat wall scaling loss, the wind of blower fan also is that the air vent 8 by interior cover blows in the burner hearth with apical pore 7, is unlikely and causes a large amount of lime-ash to fall into air compartment.
The utility model is after improving on the prior art, the quantity of the blast cap of fluidized-bed combustion boiler can be reduced half even reduces 3/4, greatly reduce cost, and the effect of air-supply is unaffected, can make the cycle of operation of blast cap improve more than 5 times, reduce maintenance workload, reduced the start-stop time of equipment.Because the passage of air-supply improves, avoid the stifled eye of blast cap and leaked the slag phenomenon, reduced fan resistance, can save a large amount of station services, the utility model is the more satisfactory novel blast cap of using on the present fluidized-bed combustion boiler.
Description of drawings:
Fig. 1 is blast cap and other attachment erection structure schematic diagram of fluidized-bed combustion boiler;
Fig. 2 is the structural representation of interior cover 2 band top boards;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the structural representation of overcoat 1;
Fig. 5 is the vertical view of Fig. 4.
The explanation of accompanying drawing drawing:
1 overcoat; Cover in 2; 3 pipe layings; 4 flame retardant coatings; 5 air distribution plates; 6 air vents; 7 apical pores; 8 air vents; Cover external screw thread in 9; 10 overcoat internal threads; 11 top boards.
In order to understand better and to implement, it is as follows with the accompanying drawing to be that embodiment further specifies below: the interior overcoat of blast cap can adopt the material of prior art to make, in order to make ventilation effect better, can on interior cover 1 top circumferential wall, bore 3 row's air vents 8, evenly distributed between the Kong Yukong, hole between row and row is interlaced, can bore 12-24 air vent 8, in cover can cast solid with top board, interior cover also can weld together with top board, can bore 7 holes on the top board 11, can bore 6-12 air vent 6 on the overcoat 1 lower circumference wall, in after the cancellation of cover top board 11, interior cover top still with the outer casing inner wall sealed engagement in cover become not plugging type.Simultaneously the overcoat wall thickness is suitably strengthened, is guaranteeing overcoat by mill under the saturating situation, its practical effect with have top board identical.Overcoat with in apply mechanically and be threaded, also can weld.Fig. 1 is blast cap and other annex scheme of installation of recirculating fluidized bed, and air distribution plate 5 separates air compartment and fluid bed, plays supporting flame retardant coating 4 and blast cap.Pipe laying 3 is embedded in the flame retardant coating, the bottom is connected with air distribution plate, match with cover in the blast cap in the top, in the blast cap match with pipe laying in the cover bottom, and beat in flame retardant coating, interior cover top and overcoat top inner wall sealed engagement, matching with overcoat internal thread 10 with external screw thread 9 in interior cover middle part, is enclosed within outward more than the flame retardant coating, and pipe laying 3 inwalls can be threaded, the outer wall of interior cover bottom also can be threaded, work in coordination, can be not threaded yet, the interior cover following cylindrical overstriking in middle part, with the wall thickness reduction of interior cover bottom, interior cover is inserted on the pipe laying to cooperate also can.Air distribution plate is to distribute the first time of air-supply, area according to siege, determine blast cap quantity, also determined the number of aperture of air distribution plate, in cover be to distribute for the second time of air-supply, air-supply enters interior cover by air distribution plate, enters interlayer by the air vent of interior cover, wind converges the back at interlayer and distributes for the third time to 8 air vents of overcoat, is blown in the burner hearth then.
Claims (6)
1, the novel blast cap of a kind of CFBB, have interior cover (2), overcoat (1), it is characterized in that interior cover (2) top circumferential wall is provided with air vent (8), the lower circumference wall of overcoat is provided with air vent (6), and interior cover (2) top exterior walls contacts with the inwall on overcoat (1) top.
2, by the novel blast cap of the described CFBB of claim 1, the upper edge that it is characterized in that the air vent (6) on the overcoat (1) and the lower edge of the air vent (8) on the interior cover (2) apart from difference be 30-80mm.
3, by claim 1, the novel blast cap of 2 described circular flow fluidized bed boilers, it is characterized in that interior cover (2) top is provided with top board (11), top board (11) is provided with apical pore (7).
4, by the novel blast cap of the described CFBB of claim 1, it is characterized in that overcoat (1) first half is closed hemispherical, the middle part is a cylindrical shape, bottom cylindrical overstriking, and air vent (6) just is located at the position of overcoat (1) bottom cylindrical overstriking.
5, by the novel blast cap of the described CFBB of claim 4, the inwall that it is characterized in that overcoat (1) bottom is provided with overcoat internal thread (10), the middle part outer wall overstriking of interior cover (2), cover external screw thread (9) in the middle part outer wall is provided with, by internal and external screw thread overcoat (1) is screwed on the interior cover (2), the outer wall at interior cover (2) top is contacted to best with the inwall on overcoat (1) top.
6, by the novel blast cap of the described CFBB of claim 5, it is characterized in that overcoat (1) first half is that the below circumferential wall of closed hemispherical position is provided with the cutter rib, be stuck on the cutter rib by specific purpose tool, be screwed on the interior cover (2) by internal and external threads (10,9), the outer wall at cover top contacts to best with the inwall on overcoat (1) top in just making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236043 CN2207522Y (en) | 1994-12-15 | 1994-12-15 | Nozzle button of circulating fluidizing bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236043 CN2207522Y (en) | 1994-12-15 | 1994-12-15 | Nozzle button of circulating fluidizing bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207522Y true CN2207522Y (en) | 1995-09-13 |
Family
ID=33844139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94236043 Expired - Fee Related CN2207522Y (en) | 1994-12-15 | 1994-12-15 | Nozzle button of circulating fluidizing bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207522Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN102049350A (en) * | 2009-10-26 | 2011-05-11 | 孙刚 | Air dense medium dry separation device |
| CN105090980A (en) * | 2015-08-19 | 2015-11-25 | 河南科技大学 | Spiral-flow type fluidized bed incinerator |
| CN108793161A (en) * | 2018-06-26 | 2018-11-13 | 陕西科汇热工技术有限责任公司 | A kind of blast cap |
-
1994
- 1994-12-15 CN CN 94236043 patent/CN2207522Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049350A (en) * | 2009-10-26 | 2011-05-11 | 孙刚 | Air dense medium dry separation device |
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN105090980A (en) * | 2015-08-19 | 2015-11-25 | 河南科技大学 | Spiral-flow type fluidized bed incinerator |
| CN108793161A (en) * | 2018-06-26 | 2018-11-13 | 陕西科汇热工技术有限责任公司 | A kind of blast cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |