CN203478179U - Boiler with furnace arch structure - Google Patents
Boiler with furnace arch structure Download PDFInfo
- Publication number
- CN203478179U CN203478179U CN201320405523.5U CN201320405523U CN203478179U CN 203478179 U CN203478179 U CN 203478179U CN 201320405523 U CN201320405523 U CN 201320405523U CN 203478179 U CN203478179 U CN 203478179U
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- arch
- header
- boiler
- tube
- furnace
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Abstract
The utility model discloses a boiler with a furnace arch structure. A front arch is positioned on the front part of a hearth; a rear arch is positioned in the middle and rear parts of the hearth; a sedimentation arch is positioned behind the rear arch, and forms an arched passage together with the rear arch; the boiler also comprises a front header and a front arch tube; the front header is arranged below a front wall of the boiler horizontally, and is connected with lower headers on the left and right sides; one end of the front arch tube is welded on the front header, extends upwards to the 40% of the height of the hearth in a way of forming a 30-degree angle with the horizontal plane, and then extends upwards in the plumb direction; the other end of the front arch tube extends upwards in the plumb direction, and the tail end of the front arch tube is connected with a boiler barrel; the front arch tube is covered by a casting material so as to form the front arch; the total length of the rear arch is three fourths of the length of the hearth; the front end of the rear arch has the same height with the front arch; the front end of the rear arch extends backwards in a way of forming a 40-degree angle with the horizontal plane to the 80% of the height of the hearth; the sedimentation arch is positioned behind the rear arch, and forms the arched passage with the rear arch. The radiation heating surface of the front header and the front arch tube is increased, heat storage of the front arch is absorbed, the temperature in the hearth is reduced; and the concentration of smoke and dust is reduced due to the rear arch and the sedimentation arch.
Description
Technical field
The utility model belongs to heating boiler technical field, relates to a kind of furnace arch structure boiler, is specially adapted to biomass boiler.
Background technology
Biomass fuel has the features such as ignition point lower (conventionally at 200 ℃-300 ℃), volatile matter high (in 70% left and right), ash fusion point low (800 ℃-1200 ℃).Biomass boiler need to have enough combustion spaces, guarantee that volatile matter fully burns, and fire box temperature can not be too high.Existing biomass boiler structure is all transformation a little on coal-burning boiler basis distortion, and face arch is hemispherical, and rear arch is shorter, hearth combustion narrow space, and volatile matter can not completing combustion; The heat that fuel combustion produces is put aside in a large number in burner hearth, and fire box temperature raises, and the ignition point of biomass fuel is lower, and the fuel in the hopper that easily ignites, causes disaster hidden-trouble, and this phenomenon especially more easily occurs when fire grate rotating speed reduces.In addition,, because fire box temperature is too high, the easy coking of living beings lime-ash, affects complete combustion of fuel, and brings hidden danger to slagging-off.Separately, the arch of this structure, is unfavorable for the sedimentation of flue dust, and smoke dust discharge concentration is increased, and has increased environmental pollution; Flue dust is dense to be increased, and has increased the washing away and wear and tear of the water screen tube of boiler rear arch rear side and smoke pipe, and has reduced the life-span of boiler.
Summary of the invention
The utility model discloses a kind of furnace arch structure boiler, solving face arch in prior art, the unreasonable combustion space of back arch structure is narrow and small, volatile matter can not completing combustion; Fire box temperature is too high, the easy coking of living beings lime-ash; Smoke dust discharge concentration is high, has increased environmental pollution, has reduced the problems such as boiler service life.
The disclosed furnace arch structure boiler of the utility model, comprises drum, down-comer, lower header, front header, front arch tube, water-cooling wall, face arch, rear arch, sedimentation arch; Face arch is positioned at furnace front; Rear arch is arranged in burner hearth, rear portion; Sedimentation arch is positioned at the rear of rear arch, forms arch cave shape passage with rear arch; Drum is arranged on upper furnace; Down-comer upper end is communicated with connection with drum, lower end is communicated with connection with arranged on left and right sides lower header; Water-cooling wall is arranged on arranged on left and right sides furnace wall, and lower end is communicated with connection with arranged on left and right sides lower header, and upper end is communicated with connection with drum; It is characterized in that: also comprise front header, front arch tube; Front header is horizontally placed on boiler front wall below, is connected with arranged on left and right sides lower header; Front arch tube one end is welded on front header, and is 30 degree and extends to obliquely 40% of furnace height and be vertical shape and upwards extend, and the other end vertical shape terminal that upwards extends is connected with drum; On front arch tube, cover castable and form face arch; Rear arch total length is 3/4 of burner hearth length, and front end is identical with the front pitch of arch, and is miter angle and to back upper place, extends to 80% of furnace height; Sedimentation arch is positioned at the rear of rear arch, forms arch cave shape passage with rear arch; Front header, front arch tube have increased radiation heating-surface, have absorbed face arch accumulation of heat, have reduced fire box temperature; Rear arch and sedimentation arch have reduced dust concentration.
The course of work: boiler feedwater enters drum, enters both sides lower header through down-comer, and a part is got back to drum after water-cooling wall heating, and a part enters front arch tube heating through front header and returns drum.
The utility model good effect is: anticorrosion, anti-wear, low emission, high energy efficiency; Front sagitta and short, rear arch is longer, combustion space expands, and guarantees the completing combustion of volatile matter energy; Front header, front arch tube have absorbed face arch accumulation of heat, have reduced fire box temperature, have reduced alkali metal and chloride is separated out, and boiler water-wall tube corrosion is reduced greatly, have prevented that tempering from burning stokehold hopper and lime-ash coking, have extended boiler service life; Increase boiler output, improved boiler efficiency; Under the effect of rear arch and sedimentation arch, reduce the concentration of flue dust, reduced environmental pollution, reduced flue dust to the washing away and wear and tear of boiler tube, extended the service life of boiler.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model rear arch, sedimentation arch structure schematic diagram.
In figure: 1 drum, 2 down-comers, 3 lower headers, 4 front headers, 5 front arch tubes, 6 water-cooling walls, 7 face arch, 8 rear arches, 9 sedimentation arches.
The specific embodiment
Embodiment of the present utility model, as shown in Figure 1 and Figure 2: comprise drum 1, down-comer 2, lower header 3, front header 4, front arch tube 5, water-cooling wall 6, face arch 7, rear arch 8, sedimentation arch 9; Drum 1 is arranged on upper furnace; Down-comer 2 upper ends are communicated with connection with drum 1, and lower end is communicated with connection with the lower header 3 of arranged on left and right sides; Water-cooling wall 6 is arranged on arranged on left and right sides furnace wall, and lower end is communicated with connection with the lower header 3 of arranged on left and right sides, and upper end is communicated with connection with drum 1; Front header 4 is horizontally placed on boiler front wall below, is connected with arranged on left and right sides lower header 3; Front arch tube 5 one end are welded on front header 4, and are 30 degree and extend to obliquely 40% of furnace height and be vertical shape and upwards extend, and the other end vertical shape terminal that upwards extends is connected with drum 1; Face arch 7 is positioned at furnace front; On front arch tube 5, cover castable and form face arch 7; Rear arch 8 is arranged in burner hearth, rear portion; Rear arch 8 total lengths are 3/4 of burner hearth length, and front end is highly identical with face arch 7, and are miter angle and to back upper place, extend to 80% of furnace height; Sedimentation arch 9 is positioned at the rear of rear arch 8, forms arch cave shape passage (referring to Fig. 2) with rear arch 8; Front header 4, front arch tube 5 have increased radiation heating-surface, have absorbed face arch accumulation of heat, have reduced fire box temperature; Under the effect of rear arch 8 and sedimentation arch 9, reduce the concentration of flue dust, reduced environmental pollution, reduced flue dust to the washing away and wear and tear of boiler tube, extended the service life of boiler.
The course of work:
Boiler feedwater enters drum 1, through down-comer 2, enters both sides lower header 3, and a part is got back to drum 1 after water-cooling wall 6 heating, and a part enters front arch tube 5 heating through front header 4 and returns drum 1.
Claims (1)
1. a furnace arch structure boiler; Comprise drum, down-comer, lower header, front header, front arch tube, water-cooling wall, face arch, rear arch, sedimentation arch; Face arch is positioned at furnace front; Rear arch is arranged in burner hearth, rear portion; Sedimentation arch is positioned at the rear of rear arch, forms arch cave shape passage with rear arch; Drum is arranged on upper furnace; Down-comer upper end is communicated with connection with drum, lower end is communicated with connection with arranged on left and right sides lower header; Water-cooling wall is arranged on arranged on left and right sides furnace wall, and lower end is communicated with connection with arranged on left and right sides lower header, and upper end is communicated with connection with drum; It is characterized in that: also comprise front header, front arch tube; Front header is horizontally placed on boiler front wall below, is connected with arranged on left and right sides lower header; Front arch tube one end is welded on front header, and is 30 degree and extends to obliquely 40% of furnace height and be vertical shape and upwards extend, and the other end vertical shape terminal that upwards extends is connected with drum; On front arch tube, cover castable and form face arch; Rear arch total length is 3/4 of burner hearth length, and front end is identical with the front pitch of arch, and is miter angle and to back upper place, extends to 80% of furnace height; Sedimentation arch is positioned at the rear of rear arch, forms arch cave shape passage with rear arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320405523.5U CN203478179U (en) | 2013-07-09 | 2013-07-09 | Boiler with furnace arch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320405523.5U CN203478179U (en) | 2013-07-09 | 2013-07-09 | Boiler with furnace arch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203478179U true CN203478179U (en) | 2014-03-12 |
Family
ID=50226504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320405523.5U Expired - Fee Related CN203478179U (en) | 2013-07-09 | 2013-07-09 | Boiler with furnace arch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203478179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165455B (en) * | 2014-08-12 | 2016-12-07 | 杭州华源前线能源设备有限公司 | A kind of waterpipe type high-temperature hot-water boiler |
-
2013
- 2013-07-09 CN CN201320405523.5U patent/CN203478179U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165455B (en) * | 2014-08-12 | 2016-12-07 | 杭州华源前线能源设备有限公司 | A kind of waterpipe type high-temperature hot-water boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |