CN2677839Y - High-temp. reduction hot-air cupola - Google Patents
High-temp. reduction hot-air cupola Download PDFInfo
- Publication number
- CN2677839Y CN2677839Y CN 200420001337 CN200420001337U CN2677839Y CN 2677839 Y CN2677839 Y CN 2677839Y CN 200420001337 CN200420001337 CN 200420001337 CN 200420001337 U CN200420001337 U CN 200420001337U CN 2677839 Y CN2677839 Y CN 2677839Y
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- heat
- high temperature
- heat exchanger
- barrel type
- acicular
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Abstract
The utility model provides a high temperature reduction hot air cupola, comprising a furnace hearth, an air box, a molten iron outlet forehearth, a barrel type heat exchanger, a furnace body, a needle shaped pipe heat-exchanger, a low temperature air pipe and a high temperature air pipe with heat expansion sections. The utility model has compact structure, high effective utilizing rate of heat energy, energy saving and high heat exchange efficiency, which can be widely used in iron casting and melting process of foundry practice.
Description
Affiliated technical field the present invention relates to a kind of high temperature reduction blast-heating cupola, can be widely used in the Foundry Production medium cast iron fusion process.
The existing furnace cupola of background technology, be generally cold blast cupola, on the effective rate of utilization of heat, be used for furnace charge fusing and the overheated heat of molten iron and be approximately 25%～35% of heat total expenditure, the heat that furnace gas is taken away, also more than the heat that is used to obtain molten iron, be generally 40%～55% of total amount of heat expenditure; From the composition of potential chemical heat and physics latent heat, in the total amount of heat of furnace gas, potential chemical heat accounts for 80%～85%.Therefore, this kind furnace cupola, the effective rate of utilization that exists heat is low, and energy dissipation is serious, the inadequate shortcoming of burning.Existing similar blast-heating cupola then exists complex structure, and volume is big, and floor space is big, and power consumption is big, and investment is big, the shortcoming that price is high.
Summary of the invention the object of the present invention is to provide a kind of compact conformation, heat the effective rate of utilization height, energy-conservation, heat exchange efficiency is high, the high temperature reduction blast-heating cupola.
In order to achieve the above object, high temperature reduction blast-heating cupola of the present invention, comprise the burner hearth that the below is provided with, the bellows that install the burner hearth side, the burner hearth downside is installed goes out the molten iron forehearth, the barrel type heat exchanger of installing directly over the burner hearth, the body of heater of installing directly over the barrel type heat exchanger, the acicular heat changer of installing directly over the body of heater, be installed in the low temperature airduct between barrel type heat exchanger air outlet and the acicular heat changer air inlet, be installed in the high temperature airduct that has the thermal expansion joint between acicular heat changer air outlet and the bellows.
The operation principle of high temperature reduction blast-heating cupola of the present invention is: from barrel type heat exchanger air inlet air intake, after the barrel type heat exchanger heat exchange, enter the low temperature airduct by its air outlet, enter acicular heat changer by the low temperature airduct again, after the further heat exchange of acicular heat changer, just enter the high temperature airduct, after the hot blast of blower fan after with heat exchange, send in the stove again, thereby realize the cold wind preheating.
High temperature reduction blast-heating cupola of the present invention adopts the secondary heat exchanger structure, and entire arrangement is reasonable, and especially the acicular heat changer heat exchange area is big, but its volume is very little, compact conformation.
High temperature reduction blast-heating cupola of the present invention, by making full use of the heat in the waste gas, through the secondary heat exchanger heat exchange, cold wind is preheating to high temperature about 400 ℃ by room temperature, utilize furnace gas heat that CO is fully burnt, the effective rate of utilization height of heat, thus improve molten iron temperature, save coke fuel, reach purpose of energy saving.Be that the air feed resistance is little on the other hand,, on blower fan is supporting, economize on electricity more than 20% that energy-saving effect is remarkable than blast-heating cupola of the same type because the total sectional area of heat exchanger greater than the sectional area of air supply line, can carry out melting by adapted high pressure centrifugal blower fan fully.
High temperature reduction blast-heating cupola of the present invention has not only made full use of the sensible heat in the furnace gas in the cupola melting process, i.e. physics heat, but also made full use of the latent heat in the furnace gas, i.e. chemical heat.Barrel type heat exchanger and acicular heat changer that the present invention adopts, by the secondary heat exchange, gas flow paths is long, and heat exchange area is big, the heat exchange efficiency height.
In sum, high temperature reduction blast-heating cupola of the present invention, volume is little, compact conformation, the effective rate of utilization height of heat, fuel saving facts have proved that energy-saving effect is remarkable, heat exchange area is big, the heat exchange efficiency height, the air feed resistance is little.
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 barrel type heat exchanger structural representation among Fig. 1;
Fig. 3 is the vertical view among Fig. 2;
Fig. 4 is the acicular heat changer structural representation among Fig. 1;
Fig. 5 is the vertical view among Fig. 4;
Fig. 6 is the aciculiform pipe structure for amplifying schematic diagram in the acicular heat changer.
The specific embodiment is in Fig. 1, high temperature reduction blast-heating cupola of the present invention, comprise the burner hearth 1 that the below is provided with, the bellows 2 that install burner hearth 1 side, burner hearth 1 downside is installed goes out molten iron forehearth 3, the barrel type heat exchanger of installing directly over the burner hearth 14, the body of heater of installing directly over the barrel type heat exchanger 45, the acicular heat changer of installing directly over the body of heater 56, be installed in the low temperature airduct 7 between barrel type heat exchanger 4 air outlets and acicular heat changer 6 air inlets, be installed in the high temperature airduct 8 that has the thermal expansion joint between acicular heat changer 6 air outlets and the bellows 2.
In Fig. 2～Fig. 3, high temperature reduction blast-heating cupola of the present invention, said barrel type heat exchanger 4 comprises upper flange 4-1, lower flange 4-2, inner core 4-3, urceolus 4-4, interior fin 4-5, outer fin 4-6, following water conservancy diversion flange 4-7, last water conservancy diversion flange 4-8.
High temperature reduction blast-heating cupola of the present invention, said barrel type heat exchanger 4, its effect is: cold wind is entered the bottom of barrel type heat exchanger by bottom air inlet a, through after circumference one circle preheating, in the middle part of the water conservancy diversion flange enters down, behind circumference one circle, enter top again, derive by top air outlet b through last water conservancy diversion flange.Because gas flow paths is long, heat exchange area is big, the heat exchange efficiency height.
High temperature reduction blast-heating cupola of the present invention, said barrel type heat exchanger 4, interior fin 13 has wherein adopted simplified painting, and signal is not come out, and only illustrates outer fin.
In Fig. 4～Fig. 6, high temperature reduction blast-heating cupola of the present invention, said acicular heat changer 6 comprises shell 6-1, be positioned at the aciculiform heat exchange tube group 6-2 of shell 6-1, link to each other with aciculiform heat exchange tube group 6-2 two ends and be installed in inlet box 6-3 and air outlet box 6-4 on the shell 6-1.
High temperature reduction blast-heating cupola of the present invention, said acicular heat changer 6, its operation principle is: the low temperature wind of being derived by the air outlet b of barrel type heat exchanger 4 imports the air inlet of acicular heat changers 6 by low temperature airduct 7 about 150 ℃, carry out intensification second time through aciculiform heat exchange tube group, air preheat is after about 400 ℃ the most at last, hot blast is sent in the stove again, improved temperature in the stove, realized the utilization again of waste gas, the saving energy is remarkable, thereby increases economic efficiency.
High temperature reduction blast-heating cupola of the present invention, the convection heat transfer' heat-transfer by convection on enhanced heat exchange surface effectively improves heat transfer coefficient.The aciculiform pipe that special welding procedure is made, the heat transfer area of its unit length are about seven times of common light pipe of same size.In addition, in thermal source medium transversal flow draw point, form the stable state eddy flow and the recirculating zone of symmetry at the cylinder back side of draw point, the constantly destroyed and formation again again of thermal boundary, thereby make whole heat-transfer surface boundary layer attenuate, improved the coefficient of heat transfer so greatly with regard to having reduced thermal resistance, and strong eddy flow and reflux makes the aciculiform tube-surface have stronger anti-gray antiscale and higher from the ash disposal ability.
High temperature reduction blast-heating cupola of the present invention, the aciculiform tube body forms by bending after the high frequency furnace heating, long service life, the pin on the aciculiform tube body is welded by the scratch start melting equipment of special use simultaneously, and weld seam does not contain air gap, good heat conductivity, heat exchange efficiency height.
High temperature reduction blast-heating cupola of the present invention, said acicular heat changer when being heated, can produce thermal stress, and therefore, every aciculiform heat exchanger tube all is provided with certain circular arc, to eliminate thermal stress, to solve thermal expansion problem.
High temperature reduction blast-heating cupola of the present invention, and two different places of common furnace cupola: effective depth is shorter than general furnace cupola, short approximately 800～1200mm is to guarantee to produce a certain amount of CO; The second, the charge door opening size is reasonable, and general opening section is long-pending to be 1/3～1/2 of furnace cross-sectional area, to guarantee entering an amount of air, guarantees the burning of CO, and generation flame heats the heat exchanger tube in the Heat Room.
Claims (3)
1. high temperature reduction blast-heating cupola, it is characterized in that, comprise the burner hearth that the below is provided with, the bellows that install the burner hearth side, the burner hearth downside is installed goes out the molten iron forehearth, the barrel type heat exchanger of installing directly over the burner hearth, the body of heater of installing directly over the barrel type heat exchanger, the acicular heat changer of installing directly over the body of heater, be installed in the low temperature airduct between barrel type heat exchanger air outlet and the acicular heat changer air inlet, be installed in the high temperature airduct that has the thermal expansion joint between acicular heat changer air outlet and the bellows.
2. high temperature reduction blast-heating cupola according to claim 1 is characterized in that said barrel type heat exchanger comprises upper flange, lower flange, inner core, urceolus, interior fin, outer fin, following water conservancy diversion flange, last water conservancy diversion flange.
3. high temperature reduction blast-heating cupola according to claim 1, it is characterized in that said acicular heat changer comprises shell, be positioned at the aciculiform heat exchange tube group of shell, link to each other with aciculiform heat exchange tube group two ends and be installed in inlet box and air outlet box on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001337 CN2677839Y (en) | 2004-01-03 | 2004-01-03 | High-temp. reduction hot-air cupola |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001337 CN2677839Y (en) | 2004-01-03 | 2004-01-03 | High-temp. reduction hot-air cupola |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677839Y true CN2677839Y (en) | 2005-02-09 |
Family
ID=34582371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420001337 Expired - Fee Related CN2677839Y (en) | 2004-01-03 | 2004-01-03 | High-temp. reduction hot-air cupola |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677839Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726844A (en) * | 2017-11-20 | 2018-02-23 | 山西博邦机械制造有限公司 | Energy saving and environment friendly totally-enclosed blast-heating cupola |
-
2004
- 2004-01-03 CN CN 200420001337 patent/CN2677839Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726844A (en) * | 2017-11-20 | 2018-02-23 | 山西博邦机械制造有限公司 | Energy saving and environment friendly totally-enclosed blast-heating cupola |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |