CN2104410U - Combined radiation-convection high-temp. hot-blast stove - Google Patents
Combined radiation-convection high-temp. hot-blast stove Download PDFInfo
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- CN2104410U CN2104410U CN 91209515 CN91209515U CN2104410U CN 2104410 U CN2104410 U CN 2104410U CN 91209515 CN91209515 CN 91209515 CN 91209515 U CN91209515 U CN 91209515U CN 2104410 U CN2104410 U CN 2104410U
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- cylinder
- flue gas
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Abstract
The utility model discloses a combined radiation-convection hot blast furnace, which belongs to the field of horizontal hot blast furnaces, comprising a combustion device which is composed of a coal hopper, an inclined reciprocating grate and a furnace cavity, a heat exchange device and a cold flue gas return duct at the exit of furnace gas. The utility model is characterized in that the heat exchange device is assembled by a right for radiation heat exchanging and a left cylinder for convection heat exchanging via pipes. The right cylinder is provided with a cylinder with a wing which forms a vertically air clamping path between the right cylinder, the left cylinder is provided with a flue gas tube bundle for heat convection, the upper tube plate of the tube bundle is provided with expanded freezing furnace air, and the gas path is long. The flow speed of the flue gas in a convection zone is fast, and therefore, the heat exchanging is sufficient and the heat efficiency is high.
Description
The utility model is a kind of radiation---convection current combined high-temperature hot-blast stove, be applicable to greater than 500,000 kilocalories/time heating load the large high-temperature hot-blast stove, belong to the horizontal hot air furnace technical field.
Horizontal hot air furnace is because of directly supplying with hot blast, and has fast, the small investment of heat supply, do not need auxiliary equipment such as water and water treatment, do not make pressure-vessel, security of operation, the coal utilization is wide, but advantages such as operation mechanization, so be widely used in the industries such as heat supply, heating system and food processing, medicinal material, component of machine paint drying.But the heat exchanger structure of existing horizontal hot air furnace is also undesirable, the one, and the heat exchange of air and flue gas is abundant inadequately, and the heat of flue gas does not also maximize the use, therefore the thermal efficiency is not high enough, the 2nd, pipe fitting is in the high-temperature flue gas for a long time, and very easy scaling loss or be out of shape impairedly influences this stove life-span.
The purpose of this utility model is a kind of high temperature hot-blast furnace with new construction heat exchanger of design, makes that the thermal efficiency improves, long service life, be applicable to caloric value greater than 500,000 kilocalories/time operating mode.
The combustion apparatus that the utility model is made up of coal feeding bucket, reciprocal grate, burner hearth, the heat exchanger of being made up of stove tube and air duct, exhaust gases passes, exhaust opening, cold wind import, hot-blast outlet and the cold flue gas backwind tube of burner hearth smoke outlet setting are formed, and it is characterized in that:
1. described stove tube is two cylinders that are provided with separately, join by two tube connectors between them, wherein right cylinder have on being top cover, upper cover plate, in cylinder of a sleeve being arranged, being provided with 1 above flue gas guiding awl in the middle of it, communicating with burner hearth down.The outside of above-mentioned sleeve is provided with 2 above fin groups from top to bottom all around, the inboard first half is provided with 1 above fin groups, above-mentioned left cylinder have on being top cover, in have the cylinder of above (the comprising a row) convection current of a row with the smoke pipe bundle be set on upper perforated plate, lower perforated plate and the tube sheet with one heart, upper perforated plate is to have the expand plectane of knot of annular more than 1.
2. described air duct is made up of with the vertical passageway between its inner sleeve right cylinder by placing the horizontal passageway of forming perpendicular to the multilayer insulating panel of convection bank to reach with tube connector.
3. described flue gas passageway is made up of upper smoke collecting chamber, convection bank and the next part smoke box of the sleeve in the right cylinder, top fume collecting chamber, tube connector, left cylinder.
Operation principle of the present utility model is: after hot flue gas is come out by burner hearth, mix with the cold flue gas that its exit backflow comes earlier, make the cigarette temperature be about 1050 ℃, then walk along with flue; Cold air enters the back earlier along with wash away vertical with smoke pipe bundle flue gas of the circuitous air passageway of level from bottom to top carried out heat convection by the cold wind mouth, then enter vertical air passageway in the right cylinder again by tube connector, carry out convection current (top), radiation (tube in, bottom) heat exchange with high-temperature flue gas, draw by hot-blast outlet at last.Because the fin groups, the center that are provided with good thermal conduction based on the sleeve medial and lateral in the right cylinder of radiant heat exchange among the design are provided with guiding and bore, therefore heat exchange is abundant, flue gas flow long, good dedusting effect, flue gas flows fast in the convection heat transfer' heat-transfer by convection district smoke pipe in addition, make its conductivity of heat better, therefore the thermal efficiency height of whole stove.For causing torsional fracture that internal stress causes, the pipe thermal expansion that overcomes long term high temperature work damages in addition, the upper perforated plate that the utility model will install convection bank is designed to have inflatable flexible expansion knot, to overcome disadvantage, prolong stove and use the life-span, thereby make this stove and accessory that good economic benefit be arranged; Since this stove be applicable to 500,000 kilocalories/time above operating mode, this Proper Design is the structure that two cylinders separate, so that make and install.
Embodiment: radiation---convection current combined high-temperature hot-blast stove
Description of drawings:
Fig. 1 is the overall structure schematic diagram of present embodiment;
Fig. 2 is the B-B cutaway view of Fig. 1.
Among the figure: (1) coal bunker, (2) reciprocal grate, (3) burner hearth, (4) flue gas collecting box, (5) lower perforated plate, (6) cold wind import, (7) right cylinder, (8) exhaust opening, (9) dividing plate, (10) upper perforated plate, (11) expand and tie (12) upper smoke collecting chamber, (13) smoke pipe bundle (14), (14) top cover, (15) tube connector, (16) tube connector, (17), (18) tube connector, (19) upper smoke collecting chamber, (20) fin groups, (21) upper cover plate, (22) guiding awl, (23) top cover, (24) sleeve, (25) left cylinder, (26) cold flue gas backwind tube, (27) hot-blast outlet, (28) disk, (29) ring, (30) fin.
The structure of present embodiment and top narration basic identical, with the exception of this, its pipe range of pipe outer of the logical flue gas of the convection bank in this hot-blast stove arranges 5 above fin groups (30) from top to bottom; The upper perforated plate (10) on its left cylinder top is made up of disk (28) and 2 rings (29) of centre, between ring, be provided with the knot (11) that can expand for the annular of the flexible usefulness of thermal expansion between ring and the left cylinder, the tube connector between left and right cylinder (25), (7) respectively by the pipe (16) on being arranged at pipe (17), (18) on the right cylinder and being arranged at left cylinder, (15) are corresponding is socketed to form with sliding fit.
Above-mentioned these three parts supplementary features make the present embodiment thermal efficiency higher, and deformed damaged still less.After high-temperature flue gas and cold flue gas are mixed, guarantee that its temperature is 1050 ℃ in addition, in the smoke backflow pipeline, be provided with one and can regulate the butterfly valve (referring to Fig. 2) of open degree, reach best so that admixture can be controlled.
This high temperature hot-blast furnace is impaired little so have good economic, practical value because of thermal efficiency height, distortion.
Claims (3)
1, a kind of radiation-convection current combined high-temperature hot-blast stove, the combustion apparatus of forming by coal feeding bucket (1), reciprocal grate (2), burner hearth (3), the cold flue gas backwind tube (26) that heat exchanger of being made up of stove tube, air duct, exhaust gases passes, exhaust outlet (8), cold wind import (6), hot-blast outlet (27) and burner hearth smoke outlet are provided with is formed, and it is characterized in that:
(1) described stove tube is two cylinders that are provided with separately, link to each other by two tube connectors between them, wherein right cylinder (25) has top cover (23) on being, upper cover plate (21), in have a sleeve (24) to be provided with cylinder that 1 above flue gas guiding awl (22) communicates with burner hearth down in the middle of it, be provided with 2 above fin groups (20) around the outside of sleeve (24) from top to bottom, above-mentioned left cylinder (7) has top cover (14) on being, in have on, lower perforated plate (10,5), the cylinder of above (the comprising a row) convection current of one row with smoke pipe bundle (13) is set on the tube sheet with one heart, and upper perforated plate (10) is for having the plectane of annular expansion knot (11) more than 1;
(2) described air duct is made up of with the vertical passageway between sleeve (24) cylinder (25) by placing the horizontal passageway of forming perpendicular to the multilayer insulating panel (9) of convection bank (13) to reach with tube connector (15,18);
(3) described flue gas passageway is by the upper smoke collecting chamber (12) of the sleeve (24) of right cylinder, upper smoke collecting chamber (19), tube connector (16,17), left cylinder.Smoke pipe bundle (13) and flue gas collecting box (4) are formed.
2, by the described high temperature hot-blast furnace of claim 1, two tube connectors (16,17) are socketed to form with sliding fit with 2 tube connectors (15,18) on the left cylinder are corresponding on the right cylinder by being arranged at respectively to it is characterized in that between described right cylinder and left cylinder tube connector.Described upper perforated plate can be made up of disk (28) and 1 above ring (29), but between ring, be provided with expand the stretch expansion of usefulness of heat supply between ring and the left cylinder and tie (11).
3, by claim 1,2 described high temperature hot-blast furnaces, the smoke pipe that it is characterized in that the convection bank district is for being provided with the pipe of fin (30) from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209515 CN2104410U (en) | 1991-06-10 | 1991-06-10 | Combined radiation-convection high-temp. hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209515 CN2104410U (en) | 1991-06-10 | 1991-06-10 | Combined radiation-convection high-temp. hot-blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2104410U true CN2104410U (en) | 1992-05-13 |
Family
ID=4918468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91209515 Granted CN2104410U (en) | 1991-06-10 | 1991-06-10 | Combined radiation-convection high-temp. hot-blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2104410U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381754C (en) * | 2005-12-27 | 2008-04-16 | 上海康拜环保科技有限公司 | Hot oil furnace of burning straw powder material and its combustion method |
| CN102705982A (en) * | 2012-07-02 | 2012-10-03 | 蒋恩良 | Horizontal type hot blast stove |
| CN109595112A (en) * | 2018-12-09 | 2019-04-09 | 东北大学 | Vehicle-mounted hot-blast stove |
-
1991
- 1991-06-10 CN CN 91209515 patent/CN2104410U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381754C (en) * | 2005-12-27 | 2008-04-16 | 上海康拜环保科技有限公司 | Hot oil furnace of burning straw powder material and its combustion method |
| CN102705982A (en) * | 2012-07-02 | 2012-10-03 | 蒋恩良 | Horizontal type hot blast stove |
| CN109595112A (en) * | 2018-12-09 | 2019-04-09 | 东北大学 | Vehicle-mounted hot-blast stove |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |