CN101220991A - External combustion U type boiler - Google Patents
External combustion U type boiler Download PDFInfo
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- CN101220991A CN101220991A CNA2007100100349A CN200710010034A CN101220991A CN 101220991 A CN101220991 A CN 101220991A CN A2007100100349 A CNA2007100100349 A CN A2007100100349A CN 200710010034 A CN200710010034 A CN 200710010034A CN 101220991 A CN101220991 A CN 101220991A
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- boiler
- burner hearth
- external combustion
- type burner
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- Combustion Of Fluid Fuel (AREA)
Abstract
The invention relates to a U-shaped external combustion boiler, belonging to an improvement to boiler structure. The invention provides a U-shaped external combustion boiler with high heating efficiency. The invention comprises a boiler body provided with a boiler cover. The main points of the structure are that a U-shaped hearth provided with an opening at one end is arranged on the upper part of a bracket of the boiler body; a second-time air channel is arranged outside a central tube of the other end of the U-shaped hearth and the second-time air channel is connected with a fan through pipelines and spiral air channels between spiral vanes on the boiler body; a water circulation cavity provided with a water intake and a water outlet is formed among the spiral air channels, the pipelines and the U-shaped hearth.
Description
Technical field:
The present invention is the improvement that belongs to boiler structure.
Background technology:
The type of furnace complexity of traditional coal-burned industrial boiler, various in style; China's a large amount of uses at present, and representative have family burner and grate furnace.
1, chamber burner:
The chamber burner is earlier raw coal to be ground into coal dust, with air-flow coal dust is blown into burner hearth again, mixes with air in the furnace chamber space and is a kind of combustion apparatus that suspended state burns; Belong to large-scale, modernized coal-burning boiler, be mainly used in generating.The Industrial Boiler bigger for capacity also often adopts this combustion system.
2, grate furnace:
Grate furnace is the boiler of stratified combustion, and wherein representative is chain furnace, and its structure is the fairly perfect type of furnace.Its mechanical degree height, main operation such as coal, scarfing cinder, ash disposal is finished by machinery.The coal of going into stove moves with fire grate, finishes the preheating and drying of coal successively, and volatile matter is separated out and coke formation, burning, each stage of after-flame.The lime-ash in afterburnt drops down onto slag bucket by device at the slag plate shovel that removes of fire grate end, discharges out of the furnace.
But it is lower that the common drawback of above-mentioned two kinds of stoves is efficiencies of combustion; For example, the chain furnace of domestic a large amount of uses at present be 70-80% by the national regulation thermal efficiency, and the thermal efficiency of actual motion only reaches 65-72%; Wasted a large amount of fire coals.
Summary of the invention:
The present invention is exactly at the problems referred to above, provides a kind of thermal efficiency high external combustion U type boiler.
The present invention adopts following technical scheme: the present invention includes the body of heater with bell, the top of the support of its structural feature body of heater is provided with the U type burner hearth that an end has opening, the central tube of the other end of U type burner hearth is outward a secondary air duct, secondary air duct links to each other with blower fan by the spiral duct between the helical blade on the body of heater, pipeline, is the water torus with inlet opening, apopore between spiral duct, pipeline, the U type burner hearth.
Beneficial effect of the present invention:
Because secondary wind of the present invention after preheating, fully mixes high speed rotary combustion in U type burner hearth with the coal dust that enters by central tube; Enter again in the burner hearth of boiler of configuration and burn away.Therefore make coal dust in boiler of the present invention, be able to abundant burning, and combustion efficiency is very desirable, for example, compares with chain furnace: the fire coal rate 99% that burnouts, the thermal efficiency is more than 90%; Temperature is economized on coal and can be reached more than 45% more than 1700 ℃ in the stove.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the part vertical view of Fig. 1;
Fig. 4 is the full sectional view of Fig. 1;
Fig. 5 is the A-A cutaway view of Fig. 4.
The specific embodiment:
The present invention includes body of heater 1 with bell 3, the top of the support 2 of body of heater 1 is provided with the U type burner hearth 10 that an end has opening 9, outside the central tube 6 of the other end of U type burner hearth 10 is secondary air duct 12, secondary air duct 12 links to each other with blower fan by the spiral duct 14 between the helical blade 13 on the body of heater 1, pipeline 7, is the water torus 11 with inlet opening 8, apopore 5 between spiral duct 14, pipeline 7, the U type burner hearth 10.
U type burner hearth 10 is a horizontally set; The concentricity pipe 6 connection bores of U type burner hearth 10 are small end, and opening 9 place's bores are big end, and the coal dust of more convenient high speed rotary combustion is introduced in the boiler of configuration smoothly.
Boiler of the present invention can be widely used in the supporting use in stokehold of chamber burner, grate furnace Industrial Boiler.
Below in conjunction with a description of drawings course of action of the present invention:
At first, coal dust is entered U type burner hearth 10 simultaneously through central tube 6, light by fire hole 4 through blower fan; Meanwhile, secondary wind through pipeline 7, spiral duct 14, secondary air duct 12 (meanwhile, the preheating of the water in the water torus 11), enter in the U type burner hearth 10 with coal dusts and fully mix, behind the rotary combustion, in U type burner hearth 10 openings 9 enter the burner hearth of boiler of configuration, burn away again through central tube 6.
Claims (2)
1. external combustion U type boiler, comprise the have bell body of heater (1) of (3), the top that it is characterized in that the support (2) of body of heater (1) is provided with the U type burner hearth (10) that an end has opening (9), the central tube (6) of the other end of U type burner hearth (10) is outer to be secondary air duct (12), secondary air duct (12) links to each other with blower fan by the spiral duct (14) between the helical blade (13) on the body of heater (1), pipeline (7), is the water torus (11) with inlet opening (8), apopore (5) between spiral duct (14), pipeline (7), the U type burner hearth (10).
2. external combustion U type boiler according to claim 1 is characterized in that U type burner hearth (10) is a horizontally set; Concentricity pipe (6) the connection bore of U type burner hearth (10) is a small end, and opening (9) is located bore and is big end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100100349A CN101220991A (en) | 2007-01-12 | 2007-01-12 | External combustion U type boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100100349A CN101220991A (en) | 2007-01-12 | 2007-01-12 | External combustion U type boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101220991A true CN101220991A (en) | 2008-07-16 |
Family
ID=39630980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100100349A Pending CN101220991A (en) | 2007-01-12 | 2007-01-12 | External combustion U type boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101220991A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104116394A (en) * | 2013-04-24 | 2014-10-29 | 耿爱功 | U-shaped pot |
-
2007
- 2007-01-12 CN CNA2007100100349A patent/CN101220991A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104116394A (en) * | 2013-04-24 | 2014-10-29 | 耿爱功 | U-shaped pot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080716 |