DK146366B - Hearth for a boiler plant for combusting solid fuel - Google Patents
Hearth for a boiler plant for combusting solid fuel Download PDFInfo
- Publication number
- DK146366B DK146366B DK346380A DK346380A DK146366B DK 146366 B DK146366 B DK 146366B DK 346380 A DK346380 A DK 346380A DK 346380 A DK346380 A DK 346380A DK 146366 B DK146366 B DK 146366B
- Authority
- DK
- Denmark
- Prior art keywords
- hearth
- solid fuel
- fuel
- boiler plant
- feed
- Prior art date
Links
Landscapes
- Solid-Fuel Combustion (AREA)
Description
i 146366in 146366
Opfindelsen angår en herd til et kedelanlæg for afbrænding af fast brændsel, der indfødes automatisk gennem et indfødnings-rør med et fremføringsapparat, fortrinsvis en snegl.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a solid fuel boiler for burning solid fuel which is automatically fed through a feed tube with a feeding apparatus, preferably a auger.
I sådanne anlæg foregår selve forbrændingen i herden ved at 5 tilsætte luft. Når kedeltermostaten melder, at vandet i kedelen er varmere end den indstillede værdi, stopper indfødnin-gen i herden. Herved opstår der en tilbagebrænding i indfød-ningsrøret. Por at forhindre en tilbagebrænding i indfød-ningsrøret, er sneglen lidt kortere end røret, hvorved der 10 dannes en prop af brændselet. Samtidig indfødes i jævne tidsintervaller mindre mængder brændsel for at forny den del af proppen, der er brændt væk. Dette giver en dårlig brændselsøkonomi ved lav kapacitet på anlægget.In such plants, the actual combustion takes place by adding 5 air. When the boiler thermostat announces that the water in the boiler is warmer than the set value, the inlet stops. This causes a backfire in the feed tube. To prevent a backfire in the feed tube, the auger is slightly shorter than the tube, thereby forming a plug of the fuel. At the same time, small amounts of fuel are fed in at regular intervals to renew the part of the plug that has been burnt away. This results in poor fuel economy at low capacity of the plant.
Herden ifølge opfindelsen er ejendommelig ved, at indfødnings-15 røret er omsluttet af en vandkappe, der gennemstrømmes af vand fra kedelanlægget, og hvor vandkappen er så lang, set mod brændselets fremføringsretning i indfødningsrøret, at den omslutter det sidste stykke af fremføringsapparatet.The hearth according to the invention is characterized in that the feed pipe is enclosed by a water jacket which is flowed by water from the boiler system, and where the water jacket is so long, seen against the direction of the fuel in the feed pipe, that it encloses the last part of the feed apparatus.
Indfødningsrørets vandkappe køler brændselsproppen og et styk-20 ke af fremføringsapparatet. Når indfødningen i herden stopper, begynder tilbagebrændingen i indfødningsrøret. Vandkappen køler brændselsproppen så meget, at den brænder meget langsomt.The feed tube water jacket cools the fuel plug and a portion of the feed apparatus. When the feed in the hearth stops, the backfire in the feed tube begins. The water jacket cools the fuel plug so much that it burns very slowly.
Hvis brændselsproppen når at brænde væk før næste indfødning, vil den mindre brændselsmængde, der ligger i bunden af indfød-25 ningsrøret, på det stykke hvor fremføringsapparatet går ind, være så kølet af vandkappen, at det ikke kan brænde.If the fuel plug reaches burning away before the next feed, the smaller amount of fuel lying at the bottom of the feed tube at the portion where the feed device enters will be so cooled by the water jacket that it cannot burn.
Som følge heraf kan man undgå den mængde brændsel, der ellers skulle indfødes for at modvirke tilbagebrænding i indfødningsrøret, når kedeltermostaten har nået den indstillede værdi.As a result, the amount of fuel that would otherwise have to be fed in to counteract back-burning in the feed pipe can be avoided when the boiler thermostat has reached the set value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK346380A DK146366C (en) | 1980-08-12 | 1980-08-12 | HEAT TO A BOILER FOR FUEL FIRE BURNING |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK346380 | 1980-08-12 | ||
DK346380A DK146366C (en) | 1980-08-12 | 1980-08-12 | HEAT TO A BOILER FOR FUEL FIRE BURNING |
Publications (3)
Publication Number | Publication Date |
---|---|
DK346380A DK346380A (en) | 1982-02-13 |
DK146366B true DK146366B (en) | 1983-09-19 |
DK146366C DK146366C (en) | 1984-02-27 |
Family
ID=8123156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK346380A DK146366C (en) | 1980-08-12 | 1980-08-12 | HEAT TO A BOILER FOR FUEL FIRE BURNING |
Country Status (1)
Country | Link |
---|---|
DK (1) | DK146366C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986007126A1 (en) * | 1985-05-28 | 1986-12-04 | Pedersen, Johannes | Burner head for burning of solid fuels |
-
1980
- 1980-08-12 DK DK346380A patent/DK146366C/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986007126A1 (en) * | 1985-05-28 | 1986-12-04 | Pedersen, Johannes | Burner head for burning of solid fuels |
Also Published As
Publication number | Publication date |
---|---|
DK346380A (en) | 1982-02-13 |
DK146366C (en) | 1984-02-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |