CN202973984U - Smoke waste heat exchanger used for radiant tube burner - Google Patents
Smoke waste heat exchanger used for radiant tube burner Download PDFInfo
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- CN202973984U CN202973984U CN201220737878XU CN201220737878U CN202973984U CN 202973984 U CN202973984 U CN 202973984U CN 201220737878X U CN201220737878X U CN 201220737878XU CN 201220737878 U CN201220737878 U CN 201220737878U CN 202973984 U CN202973984 U CN 202973984U
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- heat exchanger
- exchanger tube
- smoke
- tube
- hot air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a smoke waste heat exchanger used for a radiant tube burner and belongs to heat exchanging or air pre-heating devices. According to the smoke waste heat exchanger used for the radiant tube burner, a heat exchanging pipe (4) is arranged in a smoke conduit (1) coaxially, a cold air conduit (5) and a hot air conduit (6) are both arranged in the heat exchanging pipe (4) and are both coaxial with the heat exchanging pipe (4), the cold air conduit (5) is located on the side of the low temperature end of the interior of the heat exchanging pipe (4), the hot air conduit (6) is located on the side of the high temperature end of the interior of the heat exchanging pipe (4), an air inlet (51) passes through the heat exchanging pipe (4) and extends out of the pipe wall on the side of a smoke inlet (2), and an air outlet (62) of the hot air conduit (6) extends out of the pipe wall, close to the smoke outlet (2) in the smoke conduit (1), of the heat exchanging pipe (4). According to the smoke waste heat exchanger used for the radiant tube burner, waste heat of high-temperature smoke is directly used for heating combustion air, cyclic utilization is achieved by converting self thermal energy to hot air, a heat source for external pre-heating is not needed, the structure is simple, installation and usage are convenient, thermal efficiency is high, and the energy-saving and cost-reducing effect is obvious.
Description
Technical field
The utility model relates to a kind of heat exchange or air preheater, relates in particular to a kind of U-shaped or W type radiation pipe burner tip smoke gas afterheat heat exchanger.
Background technology
China Patent Publication No.: CN102168928, open day: on August 31st, 2011, denomination of invention " with the wafer type heat exchanger of preheating air by flue gas afterheat ", comprise the heat exchange jacket chamber that is consisted of by inner core and urceolus, the opening at inner core two ends is used for flowing through the waste heat flue gas, sealed by annular slab between urceolus two ends and inner core, the side of the urceolus inlet of cold air of ining succession on one side, the another side hot air outlet of ining succession, and inlet of cold air and hot air outlet be right opposite each other, and be simple in structure, easy to make, gas-flow resistance is little, and heat transfer effect is better.But the flow direction and the flue gas flow direction of this technical scheme Air are perpendicular, cold air is less with the area that waste heat flue gas tube wall contacts, the time of cold and hot contact and heat exchange is too short, preheat temperature promotes limited, and heat exchange efficiency is lower, uses if establish several groups of heat exchanger series connection on the waste heat fume pipe more, preheat temperature can significantly promote, but equipment volume is huge, the place bad adaptability, and heat exchanger is installed inconvenience and cost is multiplied.
Existing U-shaped or W type radiation pipe burner tip has two mouths of pipe, one is the heated air import, another is exhanst gas outlet, after heating in radiant tube, heated air discharges from exhanst gas outlet, the flue-gas temperature that exhanst gas outlet is discharged is higher, usually can reach 800 ℃～1000 ℃, but its heat energy fails to be fully used.
Summary of the invention
The purpose of this utility model is little for existing heat exchanger Air and flue gas tube wall contact area, heat exchanger time is short, the low and radiation pipe burner tip of heat exchange efficiency is discharged flue gas and is failed defective and the deficiency rationally utilized, a kind of air is proposed and flue gas tube wall contact area is larger, heat exchanger time is abundant, the radiation pipe burner tip smoke gas afterheat heat exchanger that heat exchange efficiency is higher.It is reasonable in design, the air preheat quick heating, and preheat temperature is high, and energy-saving effect is obvious, and is simple in structure, and volume is little, and cost of manufacture is lower, and is easy for installation, is convenient to promote the use of.
the purpose of this utility model is achieved in the following ways: a kind of radiation pipe burner tip smoke gas afterheat heat exchanger, comprise smoke tube and air conduit, be provided with gas approach and exhanst gas outlet on smoke tube, be coaxially arranged with a heat exchanger tube in described smoke tube, an end near exhanst gas outlet on heat exchanger tube is low-temperature end, an end away from exhanst gas outlet is temperature end, the external diameter of heat exchanger tube is less than the internal diameter of smoke tube, described air conduit comprises that external diameter is less than cold airduct and the hot air duct of heat exchanger tube internal diameter, described cold airduct and hot air duct all are arranged in heat exchanger tube with heat exchanger tube is coaxial, wherein, described cold airduct is positioned at low-temperature end one side of heat exchanger tube, the air outlet slit of cold airduct is towards the end face of also close heat exchanger tube low-temperature end, described hot air duct is positioned at temperature end one side of heat exchanger tube, the air inlet of hot air duct is towards the end face of also close heat exchanger tube temperature end, air intlet on described cold airduct pass heat exchanger tube and from the smoke tube the tube wall of gas approach one side stretch out, the gas outlet of described hot air duct tube wall near the gas approach position from the heat exchanger tube stretches out.
Be provided with fin on the outer surface of temperature end one side of described heat exchanger tube and inner surface.
The external diameter of described heat exchanger tube equals 1/2～3/4 of smoke tube internal diameter.
The equal diameters of described cold airduct and hot air duct, and the external diameter of cold airduct and hot air duct equals 1/2～3/4 of heat exchanger tube internal diameter.
The air outlet slit of described cold airduct equals 1～2 times of heat exchanger tube internal diameter to the distance of heat exchanger tube low-temperature end end face, the air inlet of described hot air duct to the distance of heat exchanger tube temperature end end face equals 1/4～3/4 of heat exchanger tube internal diameter.
Be provided with flange on air intlet on described cold airduct, the nozzle configuration of taper is made in the gas outlet of described hot air duct.
Described heat exchanger tube, cold airduct and hot air duct all adopt heat resisting steel to make.
Be provided with flange on the gas approach of described smoke tube and exhanst gas outlet.
Compared with prior art the utlity model has following obvious advantage:
1. the utility model arranges heat exchanger tube vertically in smoke tube inside, and in heat exchanger tube inside, cold airduct and hot air duct are set vertically, make cold air carry out heat exchange by tube wall and the high-temperature flue gas U-shaped or that W type radiation pipe burner tip is discharged of heat exchanger tube, the contact area of heat exchanger tube and high-temperature flue gas is large, preheating to tube wall is abundant, heat utilization ratio is high, particularly the air outlet slit on cold airduct and the air inlet on hot air duct respectively near and towards low-temperature end and the temperature end of heat exchanger tube, lengthened the flow path of cold air in heat exchanger tube, extended the time of cold air heat exchange and preheating, namely extended the heat time heating time of high-temperature flue gas to air, utilization to the fume afterheat heat is abundant, heat exchange efficiency improves greatly, strengthened the pre-heat effect of cold air, the pre-heating temperature elevation of cold air is fast, preheat temperature is high.
2. the utility model is simple in structure, and volume is little, does not take the space of fume pipe outside, and is easy to install, do not affect the discharging of flue gas, and to the heat utilization rate raising of high-temp waste gas, energy consumption used further reduces, and energy conservation and consumption reduction effects is obvious.
3. cold airduct of the present utility model, hot air duct, heat exchanger tube are all to adopt heat resisting steel to make, and have that heatproof is high, advantages such as good heat conductivity, quality are light, long service life.
4. the utility model burner is reasonable in design, simple in structure, and processing and fabricating is convenient, and cost is lower.Can be widely used in air preheat and heat exchange in the industries such as Ferrous Metallurgy, construction material, refractory material, glass, pottery, be particularly suitable for providing to U-shaped or W type radiation pipe burner tip the high temperature combustion air of preheating, be convenient to promote the use of.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure, smoke tube 1, gas approach 2, exhanst gas outlet 3, heat exchanger tube 4, cold airduct 5, air intlet 51, air outlet slit 52, hot air duct 6, air inlet 61, gas outlet 62, fin 7.
The specific embodiment
Below in conjunction with description of drawings and the specific embodiment, the utility model is described in further detail.
referring to Fig. 1, a kind of radiation pipe burner tip smoke gas afterheat heat exchanger of the present utility model, a kind of smoke gas afterheat heat exchanger, comprise smoke tube 1 and air conduit, be provided with gas approach 2 and exhanst gas outlet 3 on smoke tube 1, it is characterized in that: be coaxially arranged with a heat exchanger tube 4 in described smoke tube 1, an end near exhanst gas outlet 3 on heat exchanger tube 4 is low-temperature end, an end away from exhanst gas outlet 3 is temperature end, the external diameter of heat exchanger tube 4 is less than the internal diameter of smoke tube 1, described air conduit comprises that external diameter is less than cold airduct 5 and the hot air duct 6 of heat exchanger tube 4 internal diameters, described cold airduct 5 and hot air duct 6 all are arranged in heat exchanger tube 4 with heat exchanger tube 4 is coaxial, wherein, described cold airduct 5 is positioned at low-temperature end one side of heat exchanger tube 4, the air outlet slit 52 of cold airduct 5 is towards the end face of also close heat exchanger tube 4 low-temperature end, described hot air duct 6 is positioned at temperature end one side of heat exchanger tube 4, the air inlet 61 of hot air duct 6 is towards the end face of also close heat exchanger tube 4 temperature end, air intlet 51 on described cold airduct 5 pass heat exchanger tube 4 and from the smoke tube 1 tube wall of gas approach 2 one sides stretch out, the gas outlet 62 of described hot air duct 6 tube wall near gas approach 2 positions from the heat exchanger tube 4 stretches out.
Gas approach 2 on described smoke tube 1 is connected with exhanst gas outlet on U-shaped or W type radiation pipe burner tip, exhanst gas outlet 3 is connected with smoke discharging pipe, for ease of smoke tube 1 respectively with burner on exhanst gas outlet be connected with smoke discharging pipe, be provided with flange on the gas approach 2 of described smoke tube 1 and exhanst gas outlet 3.be coaxially arranged with heat exchanger tube 4 in smoke tube 1, an end that namely gos deep into the exhanst gas outlet inside on U-shaped or W type radiation pipe burner tip away from an end of exhanst gas outlet 3 on heat exchanger tube 4 is temperature end, an end near exhanst gas outlet 3 is low-temperature end, heat exchanger tube 4 inside are coaxially arranged with cold airduct 5 and hot air duct 6, cold airduct 5 is arranged at low-temperature end one side of heat exchanger tube 4, the air outlet slit 52 of cold airduct 5 is towards the end face of also close heat exchanger tube 4 low-temperature end, when the air outlet slit 52 of described cold airduct 5 to the distance of heat exchanger tube 4 low-temperature end end faces equals 1～2 times of heat exchanger tube 4 internal diameters, can make the cold air that enters in heat exchanger tube 4 fully absorb heat and heat up in low-temperature zone, hot air duct 6 is arranged at temperature end one side in heat exchanger tube 4, the air inlet 61 of hot air duct 6 is towards the end face of also close heat exchanger tube 4 temperature end, when the air inlet 61 of described hot air duct 6 to the distance of heat exchanger tube 4 temperature end end faces equal heat exchanger tube 4 internal diameters 1/4～3/4 the time, both can satisfy flowing into the heating needs of hot air duct 6 air, can satisfy again the traffic requirement that hot-air flows in hot air duct.
In order to improve heat transfer effect, can be provided with fin 7 on the outer surface of temperature end one side of described heat exchanger tube 4 and inner surface.
The external diameter of described heat exchanger tube 4 equals 1/2～3/4 of smoke tube 1 internal diameter.The equal diameters of described cold airduct 5 and hot air duct 6, and the external diameter of cold airduct 5 and hot air duct 6 equals 1/2～3/4 of heat exchanger tube 4 internal diameters.In traffic requirement, the high-temperature flue gas of also taking into account and the preheating between air and heat transfer effect make the air themperature after preheating can reach 400 ℃～600 ℃ in satisfying flue gas and Air Flow.The thermal efficiency can improve more than 20%.
Be provided with flange on air intlet on described cold airduct 5, can be connected with flange U-shaped or W type radiation pipe burner tip upper smoke outlet, the nozzle configuration of taper is made in the gas outlet 62 of described hot air duct 6, so that be connected with preheated air import on U-shaped or W type radiation pipe burner tip.
Described heat exchanger tube 4, cold airduct 5 and hot air duct 6 all adopt the good heat resisting steel of heat conductivility to make, and its heat exchange efficiency is high, long service life.
The course of work of the present utility model is: the high-temperature flue gas of being discharged by U-shaped or W type radiation pipe burner tip enters from the gas approach 2 of smoke tube 1, exhanst gas outlet 3 from smoke tube 1 flows out, in flow process, the temperature end that high-temperature flue gas is first exchanged heat pipe 4 heats, heat by the exchange of the space between heat exchanger tube 4 and smoke tube 1 heat pipe 4 integral body afterwards, then the exhanst gas outlet 3 from smoke tube 1 is discharged.be arranged on gas approach 2 one sides on smoke tube 1 at the air intlet 51 of the inner cold airduct 5 of heat exchanger tube 4, namely be arranged in heat exchanger tube 4 on a section between gas approach 2 and exhanst gas outlet 3, flow out from air outlet slit 52 to the low-temperature end of heat exchanger tube 4 is mobile at cold air middle part from heat exchanger tube 4 in cold airduct 5, enter in heat exchanger tube 4, low-temperature end from heat exchanger tube 4 flows to temperature end again, air runs through the total length of heat exchanger tube 4 in the path of heat exchanger tube 4 internal flows, make path and the time lengthening of its heat exchange, and the flow direction of air and the flow direction of high-temperature flue gas are reverse flow, realize contrary convective heat exchange, heat exchange efficiency is high.The air that flow to heat exchanger tube 4 temperature end enters the air inlet 61 of hot air duct 6, flow to the gas outlet 62 of hot air duct 6 again, 62 flow out from the gas outlet, and the air after preheating is sent into air intlet on U-shaped or W type radiation pipe burner tip, carry out combustion-supporting to the fuel gas that sprays in burner.The utility model directly utilizes the waste heat of high-temperature flue gas that burner combustion produces that combustion air is heated, formation is carried out the recycling of high-temp combustion again with self heat energy preheated air, need not outside preheating thermal source or preheated air, and is simple in structure, the thermal efficiency is high, and energy-saving effect is remarkable.
Claims (8)
1. radiation pipe burner tip smoke gas afterheat heat exchanger, comprise smoke tube (1) and air conduit, be provided with gas approach (2) and exhanst gas outlet (3) on smoke tube (1), it is characterized in that: be coaxially arranged with a heat exchanger tube (4) in described smoke tube (1), the upper end near exhanst gas outlet (3) of heat exchanger tube (4) is low-temperature end, an end away from exhanst gas outlet (3) is temperature end, the external diameter of heat exchanger tube (4) is less than the internal diameter of smoke tube (1), described air conduit comprises that external diameter is less than cold airduct (5) and the hot air duct (6) of heat exchanger tube (4) internal diameter, described cold airduct (5) and hot air duct (6) all are arranged in heat exchanger tube (4) with heat exchanger tube (4) is coaxial, wherein, described cold airduct (5) is positioned at low-temperature end one side of heat exchanger tube (4), the air outlet slit (52) of cold airduct (5) is towards the end face of also close heat exchanger tube (4) low-temperature end, described hot air duct (6) is positioned at temperature end one side of heat exchanger tube (4), the air inlet (61) of hot air duct (6) is towards the end face of also close heat exchanger tube (4) temperature end, air intlet (51) on described cold airduct (5) passes heat exchanger tube (4) and stretches out from the tube wall of upper gas approach (2) one sides of smoke tube (1), stretch out from the tube wall at the upper close gas approach (2) of heat exchanger tube (4) position the gas outlet (62) of described hot air duct (6).
2. a kind of radiation pipe burner tip smoke gas afterheat heat exchanger according to claim 1, is characterized in that: be provided with fin (7) on the outer surface of temperature end one side of described heat exchanger tube (4) and inner surface.
3. a kind of radiation pipe burner tip smoke gas afterheat heat exchanger according to claim 1 and 2, it is characterized in that: the external diameter of described heat exchanger tube (4) equals 1/2～3/4 of smoke tube (1) internal diameter.
4. a kind of radiation pipe burner tip smoke gas afterheat heat exchanger according to claim 1, it is characterized in that: the equal diameters of described cold airduct (5) and hot air duct (6), and the external diameter of cold airduct (5) and hot air duct (6) equals 1/2～3/4 of heat exchanger tube (4) internal diameter.
5. according to claim 1 or 4 described a kind of radiation pipe burner tip smoke gas afterheat heat exchangers, it is characterized in that: the air outlet slit (52) of described cold airduct (5) equals 1～2 times of heat exchanger tube (4) internal diameter to the distance of heat exchanger tube (4) low-temperature end end face, and the air inlet (61) of described hot air duct (6) to the distance of heat exchanger tube (4) temperature end end face equals 1/4～3/4 of heat exchanger tube (4) internal diameter.
6. according to claim 1 or 4 described a kind of radiation pipe burner tip smoke gas afterheat heat exchangers, it is characterized in that: be provided with flange on the air intlet on described cold airduct (5), the nozzle configuration of taper is made in the gas outlet (62) of described hot air duct (6).
7. a kind of radiation pipe burner tip smoke gas afterheat heat exchanger according to claim 1, it is characterized in that: described heat exchanger tube (4), cold airduct (5) and hot air duct (6) all adopt heat resisting steel to make.
8. a kind of radiation pipe burner tip smoke gas afterheat heat exchanger according to claim 1, is characterized in that: be provided with flange on the gas approach (2) of described smoke tube (1) and exhanst gas outlet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220737878XU CN202973984U (en) | 2012-12-28 | 2012-12-28 | Smoke waste heat exchanger used for radiant tube burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220737878XU CN202973984U (en) | 2012-12-28 | 2012-12-28 | Smoke waste heat exchanger used for radiant tube burner |
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| Publication Number | Publication Date |
|---|---|
| CN202973984U true CN202973984U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220737878XU Expired - Fee Related CN202973984U (en) | 2012-12-28 | 2012-12-28 | Smoke waste heat exchanger used for radiant tube burner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644577A (en) * | 2013-11-22 | 2014-03-19 | 江苏东方成套设备制造有限公司 | Radiant tube heat exchanger |
| CN104191069A (en) * | 2014-07-25 | 2014-12-10 | 武汉宇宙科技有限公司 | Manufacturing process of smoke waste heat exchanger for radiant tube burner |
| CN104913625A (en) * | 2015-06-30 | 2015-09-16 | 洛阳锐焱节能科技有限公司 | Novel waste heat recovery system for drying rotating furnace |
| CN106225006A (en) * | 2016-08-31 | 2016-12-14 | 江苏华冶科技股份有限公司 | A kind of radial canal double heat exchanger |
-
2012
- 2012-12-28 CN CN201220737878XU patent/CN202973984U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644577A (en) * | 2013-11-22 | 2014-03-19 | 江苏东方成套设备制造有限公司 | Radiant tube heat exchanger |
| CN104191069A (en) * | 2014-07-25 | 2014-12-10 | 武汉宇宙科技有限公司 | Manufacturing process of smoke waste heat exchanger for radiant tube burner |
| CN104913625A (en) * | 2015-06-30 | 2015-09-16 | 洛阳锐焱节能科技有限公司 | Novel waste heat recovery system for drying rotating furnace |
| CN106225006A (en) * | 2016-08-31 | 2016-12-14 | 江苏华冶科技股份有限公司 | A kind of radial canal double heat exchanger |
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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: 20130605 Termination date: 20181228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |