CN2913997Y - Overhead outer blast-heating cupola - Google Patents
Overhead outer blast-heating cupola Download PDFInfo
- Publication number
- CN2913997Y CN2913997Y CN 200620122084 CN200620122084U CN2913997Y CN 2913997 Y CN2913997 Y CN 2913997Y CN 200620122084 CN200620122084 CN 200620122084 CN 200620122084 U CN200620122084 U CN 200620122084U CN 2913997 Y CN2913997 Y CN 2913997Y
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- China
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- heat exchanger
- combustion chamber
- tube
- furnace gas
- tube bundle
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Abstract
The utility model relates to a top-mounted external hot blast cupola, which comprises a furnace gas combustion chamber, an air inlet pipe, a blast box, a refractory protective layer, a heat exchanger and a flue pipe. The furnace gas combustion chamber is mounted above a feed port of the cupola; the air inlet pipe is arranged on the lateral side of the furnace gas combustion chamber; the blast box is arranged outside the furnace gas combustion chamber and connected with the air inlet pipe; the refractory protective layer is arranged on the top of the combustion chamber; the tube bundle heat exchanger is mounted above the refractory protective layer; and the flue pipe is arranged above the heat exchanger. The heat exchanger includes a heat exchange tube bundle fitted therein, a bottom plate arranged at its bottom and fixedly connected with the tube bundle, a top plate arranged at its top and engaged with the tube bundle, a high-alloy refractory steel protective tube arranged at the lower end of the tube bundle, multiple half-round air deflectors arranged along length direction of the tube bundle in adjacent and staggered manner, a housing fixedly connected with the top and bottom plates, and an expansion compensator arranged on the housing. The utility model has advantages of simple structure, low manufacture cost, low element burning loss in molten iron, high temperature and quality of tapped molten iron, reduced labor intensity, eliminated fume and dust, low furnace charge cost, high heat exchange efficiency, and long service life of heat exchanger; and can be widely applied to iron smelting process in foundry industry.
Description
Affiliated technical field the present invention relates to a kind of overhead external hot air furnace cupola, can be widely used in the fusion process of casting industry molten iron.
The existing furnace cupola of background technology, melting loss of elements is many in the molten iron, and the molten iron temperature of coming out of the stove is low, of poor quality; The CO discharge capacity is big in the flue gas, furnace charge expense height, and labour intensity is big, and heat exchange efficiency is low, and heat exchanger is short service life.
Summary of the invention the object of the present invention is to provide a kind of simple in structure, cost is low, few, the molten iron temperature height and quality is good, labour intensity is little, smoke abatement and dust control, the furnace charge expense is low, heat exchange efficiency is high, the overhead external hot air furnace cupola of heat exchanger long service life of coming out of the stove of melting loss of elements in the molten iron.
In order to achieve the above object, overhead external hot air furnace cupola of the present invention, be included in the furnace gas combustion chamber that install on cupola charging mouth top, the blast pipe of installing in side, furnace gas combustion chamber, the bellows of externally installing and linking to each other with blast pipe, at the refractory material protective layer that the furnace gas top of combustion chamber is provided with, the tube bundle heat exchanger of installing on refractory material protective layer top, the smoke exhaust pipe of above heat exchanger, installing; Said heat exchanger; comprise inner heat exchanger tube tube bank of installing; the lower plate that the bottom is installed and fixedlyed connected with tube bank; the top install and with the upper plate of bundle fitting; the heat-resistant high alloy steel protection tube that the tube bank lower end is provided with; tube bank is provided with several adjacent staggered semicircle wind-guiding dividing plates along its length direction, the urceolus that the heat exchanger outside is installed and fixedlyed connected with upper and lower plate, the expansion appliance that is provided with on the urceolus.
Overhead external hot air furnace cupola of the present invention, its operation principle is: in the high-temperature flue gas that rises from cupola shaft, the potential chemical heat and the physics heat that have the CO more than 13%, CO meets the air that charge door and blast pipe enter and burns voluntarily in the combustion chamber, flue gas is heated to 800 ℃～900 ℃, high-temperature flue gas passes through in heat exchanger tube, heat is passed to from interbank air flowing through tube wall, air heat to 400 ℃～600 ℃ after warm-air pipe is sent into the furnace cupola air port.
Overhead external hot air furnace cupola of the present invention, simple in structure, cost is low, utilizes the physics heat and the chemical heat preheating air-supply of furnace gas, and the heat that makes full use of coke improves furnace temperature, formation excellent metallurgical environment, melting loss of elements is few in the molten iron, and the molten iron temperature height of coming out of the stove, quality are good.
Overhead external hot air furnace cupola of the present invention, the wind supply quantity of combustion chamber blast pipe can be adjusted automatically according to hot blast temperature, keeps hot blast temperature to be stabilized in the technique initialization value, helps stable furnace condition, workman's processing ease, labour intensity is little.
Overhead external hot air furnace cupola of the present invention, the combustion chamber directly is connected with heat exchanger, can make full use of the heat of flue gas, realize the CO spontaneous combustion, the abundant burning of CO makes in the flue gas CO discharge capacity reduce to trace, and flue gas and dust collide adjacent staggered semicircle wind-guiding dividing plate in uphill process, the part flue dust falls, and reaches the purpose of smoke abatement and dust control.
Overhead external hot air furnace cupola of the present invention, high temperature and excellent metallurgical condition have been relaxed the requirement to furnace charge, can use the frivolous furnace charge of low-quality, thereby reduce the furnace charge expense.
Overhead external hot air furnace cupola of the present invention has adopted uniform bundled tube structure, makes full use of flue gas heat, and heat exchange area is big; The semicircle wind deflector forms circuitous wind path, makes by the air velocity of heat-exchanging tube bundle evenly, and makes the heating load equilibrium of every heat exchanger tube; Flue gas passes through in heat exchanger tube, and heat loss is little, is difficult for dust stratification, also is convenient to cleaning.Therefore, heat exchange efficiency height.
Overhead external hot air furnace cupola of the present invention; because heat exchanger tube top and upper spacer suit; unfixing; expansion appliance is set on the urceolus, so heat exchanger tube and urceolus retractable, every heat exchanger tube can be because of the generation stress that expands with heat and contract with cold; every heat exchanger tube is only fixedlyed connected with lower clapboard the lower end; and the high alloy protection tube is arranged, and enough intensity and heat resistance are not only arranged under high heat load, also be easy to more renew pipe in case damage.Therefore, heat exchanger long service life.
In sum, overhead external hot air furnace cupola of the present invention, simple in structure, cost is low, and melting loss of elements is few in the molten iron, and the molten iron temperature of coming out of the stove is high and quality is good, and labour intensity is little, smoke abatement and dust control, the furnace charge expense is low, heat exchange efficiency height, heat exchanger long service life.
Description of drawings is done further explanation below in conjunction with accompanying drawing and embodiment to the present invention.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the above structural representation in I-I place among Fig. 1.
The specific embodiment is in Fig. 1, Fig. 2, overhead external hot air furnace cupola of the present invention, be included in the furnace gas combustion chamber 1 that install on cupola charging mouth top, the blast pipe of installing in side, furnace gas combustion chamber 2, the bellows 3 of externally installing and linking to each other with blast pipe, at the refractory material protective layer 4 that the furnace gas top of combustion chamber is provided with, the tube bundle heat exchanger of installing on refractory material protective layer top, the smoke exhaust pipe of above heat exchanger, installing 5; Said heat exchanger; comprise inner heat exchanger tube tube bank 6 of installing; the lower plate 7 that the bottom is installed and fixedlyed connected with tube bank; the top install and with the upper plate 8 of bundle fitting; the heat-resistant high alloy steel protection tube 9 that the tube bank lower end is provided with; tube bank is provided with several adjacent staggered semicircle wind-guiding dividing plates 10 along its length direction, the urceolus 11 that the heat exchanger outside is installed and fixedlyed connected with upper and lower plate, the expansion appliance 12 that is provided with on the urceolus.
In Fig. 2, overhead external hot air furnace cupola of the present invention, said heat exchanger, its underpart is provided with hot-blast outlet a, and top is provided with air inlet b; Said smoke exhaust pipe, bottom are provided with for maintenance mans and enter the manhole c of usefulness, and top is provided with steam vent d.
Claims (1)
1, a kind of overhead external hot air furnace cupola, it is characterized in that, be included in the furnace gas combustion chamber that install on cupola charging mouth top, the blast pipe of installing in side, furnace gas combustion chamber, the bellows of externally installing and linking to each other with blast pipe, at the refractory material protective layer that the furnace gas top of combustion chamber is provided with, the tube bundle heat exchanger of installing on refractory material protective layer top, the smoke exhaust pipe of above heat exchanger, installing; Said heat exchanger; comprise inner heat exchanger tube tube bank of installing; the lower plate that the bottom is installed and fixedlyed connected with tube bank; the top install and with the upper plate of bundle fitting; the heat-resistant high alloy steel protection tube that the tube bank lower end is provided with; tube bank is provided with several adjacent staggered semicircle wind-guiding dividing plates along its length direction, the urceolus that the heat exchanger outside is installed and fixedlyed connected with upper and lower plate, the expansion appliance that is provided with on the urceolus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122084 CN2913997Y (en) | 2006-07-03 | 2006-07-03 | Overhead outer blast-heating cupola |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122084 CN2913997Y (en) | 2006-07-03 | 2006-07-03 | Overhead outer blast-heating cupola |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913997Y true CN2913997Y (en) | 2007-06-20 |
Family
ID=38168596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620122084 Expired - Fee Related CN2913997Y (en) | 2006-07-03 | 2006-07-03 | Overhead outer blast-heating cupola |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2913997Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307889A (en) * | 2012-03-14 | 2013-09-18 | 段金挺 | Gradient utilization method for waste heat of cupola furnace |
-
2006
- 2006-07-03 CN CN 200620122084 patent/CN2913997Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307889A (en) * | 2012-03-14 | 2013-09-18 | 段金挺 | Gradient utilization method for waste heat of cupola furnace |
| CN103307889B (en) * | 2012-03-14 | 2015-01-14 | 段金挺 | Gradient utilization method for waste heat of cupola furnace |
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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: 20070620 Termination date: 20140703 |
|
| EXPY | Termination of patent right or utility model |