CN207112802U - A kind of air preheating type radiant tube burner - Google Patents
A kind of air preheating type radiant tube burner Download PDFInfo
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- CN207112802U CN207112802U CN201720661380.2U CN201720661380U CN207112802U CN 207112802 U CN207112802 U CN 207112802U CN 201720661380 U CN201720661380 U CN 201720661380U CN 207112802 U CN207112802 U CN 207112802U
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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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Abstract
The utility model discloses a kind of air preheating type radiant tube burner in the burner apparatus field of heat-treatment furnace and heating furnace, including radiant tube, radiant tube includes straight length and bend loss, the both ends of radiant tube extend through furnace wall, the external part of radiant tube two is provided with housing, one end of housing is provided with outward flange, the setting corresponding with burner of the housing of top, the setting corresponding with air preheater of the housing of lower section, one end of air preheater is provided with exhanst gas outlet, air preheater is internally provided with set of heat exchange tubes, air intlet is provided with the downside of air preheater, upside is provided with preheated air outlet, preheated air import is provided with the downside of burner, preheated air outlet is connected with preheated air import through connecting tube；Accumulation of heat component is provided with each radiant tube straight length away from burner, accumulation of heat component includes several end to end fins.The utility model make it that Temperature Distribution is evenly in radiant tube, and burning is more abundant, improves the thermal efficiency, and popularization and application are convenient.
Description
Technical field
The utility model belongs to the burner apparatus field of heat-treatment furnace and heating furnace, more particularly to a kind of radiant tube combustion
Burner.
Background technology
Radiant tube burner is mainly used in non-open firing, is widely used in each as a kind of conventional indirect heated component
In kind scale-free heating and Equipment for Heating Processing.In order to ensure the temperature homogeneity and radiation model in radiant tube in heat transfer process
Enclose, radiant tube uses U-shaped, W type structures more.The primary structure of radiant tube burner includes radiant tube, one end installing of radiant tube
There is fuel nozzle, the other end is equiped with injector, to suction out combustion product；This radiant tube burner operationally, radiant tube
Fire end and smoke evacuation end temperature difference it is larger, flow direction of the radiant tube along burning gases can produce asking for non-uniform temperature
Topic, and as the increase of radiation length of tube, the problem can be further obvious, this not only influences whether the scale-free heating of equipment and heat
Quality is handled, also results in the Fuel Consumption increase of radiant tube burner, the thermal efficiency reduces, incomplete combustion and flue gas row
Increase high-volume.
In the prior art, there is a kind of radiant tube burner, its number of patent application：201320857159.6；The applying date：
2013.12.24；Publication number：CN203671603U；Publication date：2014.06.25；Its structure include burner body and with it is described
The heat radiation tube of burner body connection, the burner body include comburent air duct, gas pipeline and air preheating chamber,
The heat radiation tube has the pipe structure of p-type and described heat radiation tube one end connection combustion-supporting feed channel other end connection institute
State air preheating chamber.When the device works, flue gas is heated by the heat-exchanger rig of air preheating chamber to it caused by fuel gas buring,
Heat-exchanger rig can be with warm-up combustion-supporting air so that more abundant, the raising thermal efficiency of combustion gas and combustion air mixing after-combustion；Its
It is disadvantageous in that：Commercially still have very big recoverable amount without the conventional radiation pipe burner of air preheat function, by into
Originally, the restriction of the factor such as installation and maintenance condition, this certain customers is more desirable to can be in the not overall situation for replacing existing equipment
Under, a kind of easy-to-use reducing energy consumption scheme is obtained, and the device can not meet in the not overall premise for replacing existing equipment
Under so that traditional radiant tube burner can carry out air preheat, to improve efficiency of combustion；Radiant tube is along burning gases stream
Cheng Fangxiang temperature distributing disproportionation is even, and in burning gases high temperature and along in the presence of journey thermal (temperature difference) stress, radiant tube is easily deformed
And breakage；The Fuel Consumption increase of radiant tube burner, incomplete combustion, the thermal efficiency are relatively low.
Utility model content
The purpose of this utility model is to provide a kind of air preheating type radiant tube burner so that radiant tube is along combustion gas
The Temperature Distribution of body flow direction evenly, prevents radiant tube deformation, breakage, and fuel combustion is more abundant, improves radiant tube combustion
The thermal efficiency of burner, traditional burner can be transformed, popularization and application are more convenient.
What the purpose of this utility model was realized in：A kind of air preheating type radiant tube burner, including installed in stove
Radiant tube on wall, radiant tube include some straight lengths and bend loss, and the both ends of the radiant tube all extend through furnace wall, radiation
Two external parts of pipe are distributed one on the other, and the external part of radiant tube two is provided with pressure bulkhead, and the pressure bulkhead includes parcel
The firmly refractory material of corresponding radiant tube external part, refractory material periphery are provided with housing, and housing is close to one end of furnace wall through interior method
Orchid is fixedly connected with furnace wall, and the one end of the housing away from furnace wall is provided with outward flange, and housing above is relative with burner
It should set, burner includes interior pipeline section and outer segment, and pipeline section is stretched into inside radiant tube in burner, and the end of pipeline section is provided with fire in burner
Flame jet, the end of burner outer segment are passed through combustion gas, and burner outer segment periphery is provided with first flange, first flange with it is corresponding
Outward flange is fixedly connected；The underlying housing setting corresponding with air preheater, one end of air preheater is provided with
Exhanst gas outlet, air preheater inside are axially provided with set of heat exchange tubes, and one end of set of heat exchange tubes is stretched into inside radiant tube, the sky
The other end periphery of air preheater is provided with second flange, and second flange is fixedly connected with corresponding outward flange, the air preheat
The position of second flange is provided with sealing supporting plate inside device, sealing supporting plate be provided with can hold set of heat exchange tubes pass through it is logical
Hole, air intlet is provided with the downside of the air preheater, preheated air outlet is provided with the upside of air preheater, it is described
Preheated air import is provided with the downside of burner, preheated air outlet is connected between preheated air import through connecting tube；Away from institute
State and accumulation of heat component is equipped with each radiant tube straight length of burner, accumulation of heat component includes several fins being sequentially connected from beginning to end.
During utility model works, combustion gas enters from burner outer segment, and air is empty from air intlet air inlet preheater
Gas enters burner, combustion gas and air mixed combustion by connecting tube again, and the flame jet of pipeline section jets out flames in burner, produces
Heat transmitted along the tube side of radiant tube, heat in radiant tube occurs convection current and to external radiation, cigarette caused by burning
Gas enters in heat exchanger tube along radiant tube, and is discharged from exhanst gas outlet, and each heat exchanger tube obtains heat, the sky entered from air intlet
Gas is exchanged heat with heat exchanger tube, and air is preheated, and the air after preheating enters connecting tube, then preheated sky from preheated air outlet
Gas import enters burner, and the air with combustion gas mixing is the air after preheating in fact, and burning is more abundant；Fuel gas buring, radiant tube
Outside radiations heat energy, for non-open firing.
Compared with prior art, the beneficial effects of the utility model are：Absorbed close to the radiant tube straight length of burner
Heat is more, and temperature is also higher, and radiant tube bend loss has that upper-lower height is poor, can form the convection current of heat, and temperature is also higher,
And the radiant tube straight length away from burner lacks convection current, heat transfer effect is poor, and temperature is than relatively low, installed in the low temperature straight tube of radiant tube
The accumulation of heat component of section can absorb heat, and fin increases heat exchange area, improves the heat exchange efficiency of radiant tube low temperature straight length,
It is distributed, is avoided in burning gases high temperature and along journey thermal (temperature difference) stress along the even heat of radiant tube burning gases flow direction
In the presence of, radiant tube deforms and breakage；Uniform heat distribution in radiant tube, improves the thermal efficiency, and burning is more filled
Point, the dosage of combustion gas is reduced, and the pollutant concentration in fume emission reduces；Pressure bulkhead plays a part of completely cutting off heat so that
Burner and air preheater work safety and reliability；Pressure bulkhead is installed by two external parts in radiant tube, will be above
Burner and air preheater are connected by outward flange respectively with the two housings of lower section, then by burner and air preheater through connecting tube
It is connected, traditional radiant tube burner can be transformed, it is not necessary to replace whole burner, it is possible to flue gas to sky
Gas is preheated, and when the air after preheating burns with combustion gas mixing, is reduced the heat needed for igniting, is more saved, burning effect
Rate is higher, and burning is more abundant；Air preheater is installed additional on the radiant tube external part of traditional radiant tube burner, in radiant tube
Low temperature straight length in install accumulation of heat component additional, can improve efficiency of combustion, burning is more abundant, and transformation is convenient, easy to utilize,
Whole burner is needed not to be removed, improves resource utilization.
As further improvement of the utility model, the fin is double helix fin, double helix fin and radiant tube phase
Matching is set, and the both ends of double helix fin are respectively arranged with positioning convex and detent, and the positioning convex of double helix fin is inserted
In the detent for entering adjacent double helix fin.The heat exchange area of double helix fin is bigger, can absorb more heats, improves spoke
Penetrate the temperature of pipe low temperature straight length, the Temperature Distribution in radiant tube is more uniform, located convex between adjacent double helix fin
Rise and detent installation positioning, it is easy to assembly, it is more flexible during in-site installation.The use of the finned accumulation of heat plug-in unit of double helix
The uniformity of radiant tube surface temperature distribution can be significantly improved, because pellet adds more than 2 times of radiant tube smoke evacuation end
Heat exchange area, the heat convection between tube wall and high-temperature gas is added, improve the mobility of thermal current, so as to accelerate radiation
The heating rate of pipe, strengthen the heat transfer of radiation inside pipe wall；The combustion conditions of radiant tube can also be improved, make air consumption system
Between number maintains stability range, while chemically incomplete combustion degree is reduced, improve the utilization rate of fuel.
It is corresponding positioned at the double of head and the tail both ends inside the straight length of the radiant tube as further improvement of the utility model
Helical fin is respectively arranged with positioning baffle ring, and the coated inner wall of radiant tube has WC-Co coatings.Positioning baffle ring can prevent accumulation of heat group
Axial float occurs for part, and WC-Co coatings improve the high temperature strength and resistance to sweep of gases, the property of corrosion of radiation pipe internal surface
Energy, improve the service life of radiant tube.
As further improvement of the utility model, the pitch of the double helix fin is equal to the internal diameter of radiant tube, each
The axial length of double helix fin is less than or equal to 2 times of pitch.The pitch of double helix fin is equal to the internal diameter of radiant tube, Ke Yi
While increasing heat transfer effect, increase the passage resistance of flue gas not too much；Axial direction no more than the double helix fin of 2 times of pitch is long
Degree, is adapted to the radiant tube straight length of axially different length, more convenient and flexible during accumulation of heat assembling components.
In order that the time of contact for obtaining air and heat exchanger tube is longer, air heat-exchange is more abundant, improves heat transfer effect, described
The upper side and lower side of air preheater inwall is staggeredly equipped with some deflection plates, and deflection plate is vertical with heat exchanger tube, is set on deflection plate
The through hole that heat exchanger tube passes through can be held by being equipped with, and each heat exchanger tube is in array distribution.Air passes through the S-shaped passage that deflection plate is formed and heat exchange
Preheated after pipe contact, temperature is improved to 150 DEG C or so.
As further improvement of the utility model, one end that the set of heat exchange tubes is stretched into inside radiant tube is provided with sealing
Baffle plate, sealing baffle match setting with radiation inside pipe wall.Sealing baffle can be prevented inside flue gas air inlet preheater, really
To protect flue gas to be introduced into heat exchanger tube, then discharged from exhanst gas outlet, sealing baffle also acts as the effect for strengthening support set of heat exchange tubes,
So that air preheater is more securely connected on housing.
As further improvement of the utility model, air inlet pipe one, air inlet pipe are provided with the downside of the air preheater
One opening is air intlet；Escape pipe is provided with the upside of air preheater, the opening of escape pipe is exported for preheated air, gone out
The end set of tracheae has the 3rd flange；Air inlet pipe two is provided with the downside of burner, the opening of air inlet pipe two is entered for preheated air
Mouthful, the end set of air inlet pipe two has the 4th flange；The top and bottom of connecting tube are equipped with the 5th flange；Underlying
Five flanges are fixedly connected with the 3rd flange, and the 5th flange above is fixedly connected with the 4th flange.Air is through air inlet pipe one
Air inlet preheater, after the heat exchange of air and heat exchanger tube, burner is entered by connecting tube, the end of escape pipe and air inlet pipe two is equal
Provided with flange, connecting tube is connected with escape pipe and air inlet pipe two respectively by the 5th flange, easy for installation, can be according to different shaped
Number, the radiant tube of size, the axial length of connecting tube is adjusted, to adapt to different types of radiant tube burner.
It is sufficiently mixed for the ease of combustion gas and preheated air, the air inlet pipe two is arranged on burner outer segment.
As it is of the present utility model preferably, the radiant tube is U-tube or W shape pipes.
Brief description of the drawings
Fig. 1 is structural representation when radiant tube of the present utility model is U-tube.
Fig. 2 is the structural representation of double helix fin.
Fig. 3 is the three-dimensional structure diagram of double helix fin.
Fig. 4 is another three-dimensional structure diagram of double helix fin.
Fig. 5 is partial structural diagram of the present utility model.
Fig. 6 is the structural representation of air preheater.
Fig. 7 is Fig. 6 side view.
Fig. 8 is the structural representation of deflection plate.
Fig. 9 is structural representation when radiant tube of the present utility model is W shape pipes.
Wherein, 1 radiant tube, 1a straight lengths, 1b bend loss, 2 furnace walls, 3 pressure bulkheads, 301 refractory materials, 302 housings,
302a outward flanges, 302b inner flanges, 4 burners, pipeline section in 401,402 outer segments, 402a first flanges, 5 flame jets, 6 is empty
Air preheater, 6a second flanges, 7 exhanst gas outlets, 8 set of heat exchange tubes, 9 sealing supporting plates, 10 air inlet pipe one, 11 escape pipes, 11a the
Three flanges, 12 air inlet pipe two, the flanges of 12a the 4th, 13 connecting tubes, the flanges of 13a the 5th, 14 accumulation of heat components, 1401 double helix fins,
1401a positioning convex, 1401b detents, 15 deflection plates, 16 sealing baffles, 17 positioning baffle rings.
Embodiment
Embodiment 1
It is a kind of air preheating type radiant tube burner such as Fig. 1-8, including the radiant tube 1 on furnace wall 2, radiation
Pipe 1 includes some straight length 1a and bend loss 1b, and the both ends of radiant tube 1 all extend through furnace wall 2, two external parts of radiant tube 1
It is distributed one on the other, 1 liang of external part of radiant tube is provided with pressure bulkhead 3, and pressure bulkhead 3 wraps corresponding radiant tube 1
The refractory material 301 of external part, the periphery of refractory material 301 are provided with housing 302, and housing 302 is close to one end of furnace wall 2 through interior method
Blue 302b is fixedly connected with furnace wall 2, and the one end of housing 302 away from furnace wall 2 is provided with outward flange 302a, housing above
302 include interior pipeline section 401 and outer segment 402 with 4 corresponding setting of burner, burner 4, and pipeline section 401 stretches into radiant tube 1 in burner 4
Inside, the end of pipeline section 401 is provided with flame jet 5 in burner 4, and the end of the outer segment 402 of burner 4 is passed through combustion gas, outside burner 4
The periphery of pipeline section 402 is provided with first flange 402a, and first flange 402a is fixedly connected with corresponding outward flange 302a；It is underlying
Housing 302 and 6 corresponding setting of air preheater, one end of air preheater 6 are provided with exhanst gas outlet 7, inside air preheater 6
Axially arranged to have set of heat exchange tubes 8, one end of set of heat exchange tubes 8 is stretched into inside radiant tube 1, and the other end periphery of air preheater 6 is set
Second flange 6a is equipped with, second flange 6a is fixedly connected with corresponding outward flange 302a, and the inside of air preheater 6 is close to second flange
6a position is provided with sealing supporting plate 9, and sealing supporting plate 9, which is provided with, can hold the through hole that set of heat exchange tubes 8 passes through, air preheater
6 downside is provided with air intlet, and the upside of air preheater 6 is provided with preheated air outlet, and the downside of burner 4 is provided with preheating
Air intlet, preheated air outlet are connected between preheated air import through connecting tube 13；Each radiant tube 1 away from burner 4 is straight
Accumulation of heat component 14 is equipped with pipeline section 1a, accumulation of heat component 14 includes several fins being sequentially connected from beginning to end.The fin is double
Helical fin 1401, double helix fin 1401 and radiant tube 1 match setting, and the both ends of double helix fin 1401 are respectively arranged with
Positioning convex 1401a and detent 1401b, the positioning convex 1401a of double helix fin 1401 insert adjacent double helix fin
In 1401 detent 1401b.The corresponding double helix fin 1401 positioned at head and the tail both ends divides inside the straight length 1a of radiant tube 1
Positioning baffle ring 15 is not provided with, and the coated inner wall of radiant tube 1 there are WC-Co coatings.The pitch of double helix fin 1401 is equal to radiation
The internal diameter of pipe 1, the axial length of each double helix fin 1401 are less than or equal to 2 times of pitch.Double helix fin 1401 is by aoxidizing
Aluminium and zirconium oxide are made up of the ceramic material of matrix.The upper side and lower side of the inwall of air preheater 6 is staggeredly equipped with some bafflings
Plate 15, deflection plate 15 is vertical with heat exchanger tube, and the through hole that heat exchanger tube passes through can be held by being provided with deflection plate 15, and each heat exchanger tube is in array
Distribution.One end that set of heat exchange tubes 8 is stretched into inside radiant tube 1 is provided with sealing baffle 16, sealing baffle 16 and the inwall phase of radiant tube 1
Matching is set.The downside of air preheater 6 is provided with air inlet pipe 1, and the opening of air inlet pipe 1 is air intlet；Air is pre-
The upside of hot device 6 is provided with escape pipe 11, and the opening of escape pipe 11 is preheated air outlet, and the end set of escape pipe 11 has the
Three flange 11a；The downside of burner 4 is provided with air inlet pipe 2 12, and the opening of air inlet pipe 2 12 is preheated air import, air inlet pipe two
12 end set has the 4th flange 12a；The top and bottom of connecting tube 13 are equipped with the 5th flange 13a；Underlying
Five flange 13a are fixedly connected with the 3rd flange 11a, and the 5th flange 13a above is fixedly connected with the 4th flange 12a.Enter
Tracheae 2 12 is arranged on the outer segment 402 of burner 4.Radiant tube 1 is U-tube.
During work, combustion gas enters from the outer segment 402 of burner 4, and air is pre- from the air intlet air inlet of air inlet pipe 1
Hot device 6, then enter connecting tube 13 from the outlet of the preheated air of escape pipe 11, by the entrance air inlet pipe 2 12 of connecting tube 13, from entering
The preheated air of tracheae 2 12, which exports, enters burner 4, final combustion gas and air mixed combustion, the flame spray of pipeline section 401 in burner 4
Loophole 5 is jetted out flames, and tube side of the caused heat along radiant tube 1 is transmitted, heat in radiant tube 1 occur convection current and to
External radiation, flue gas caused by burning enters in heat exchanger tube along radiant tube 1, and is discharged from exhanst gas outlet 7, and each heat exchanger tube obtains heat
Amount, the air entered from the air intlet of air inlet pipe 1 are exchanged heat with heat exchanger tube, and air is preheated, and the air after preheating is again
Enter burner 4 through connecting tube 13, the air with combustion gas mixing is the air after preheating in fact, and burning is more abundant；Fuel gas buring, spoke
1 outside radiations heat energy of pipe is penetrated, for non-open firing.
The advantages of present apparatus, is：The heat absorbed close to the straight length 1a of radiant tube 1 of burner 4 is more, and temperature is also higher,
The bend loss 1b of radiant tube 1 has that upper-lower height is poor, can form the convection current of heat, and temperature is also higher, and the radiation away from burner 4
The straight length 1a of pipe 1 lacks convection current, and heat transfer effect is poor, and temperature is than relatively low, installed in the low temperature straight length 1a of radiant tube 1 accumulation of heat group
Part 14 can absorb heat, and double helix fin 1401 increases heat exchange area, improve the low temperature straight length 1a of radiant tube 1 heat exchange
Efficiency, it is distributed, is avoided in burning gases high temperature and along Cheng Wen along the even heat of the burning gases flow direction of radiant tube 1
In the presence of poor stress, radiant tube 1 deforms and breakage；Uniform heat distribution in radiant tube 1, the thermal efficiency is improved, fired
Burning is more abundant, and the dosage of combustion gas is reduced, and the pollutant concentration in fume emission reduces；Pressure bulkhead 3 plays isolation heat
Effect so that burner 4 and the work safety and reliability of air preheater 6；Pressure bulkhead is installed by two external parts in radiant tube 1
3, the above and two housings of lower section 302 are connected into burner 4 and air preheater 6 respectively by outward flange 302a, then will burn
Mouth 4 is connected with air preheater 6 through connecting tube 13, and traditional burner of radiant tube 1 can be transformed, it is not necessary to will be whole
Burner is replaced, it is possible to air is preheated with flue gas, when the air after preheating burns with combustion gas mixing, reduces igniting
Required heat, is more saved, and efficiency of combustion is higher, and burning is more abundant；Stretched out in the radiant tube 1 of traditional radiant tube burner
Install air preheater 6 on end additional, end to end double helix fin 1401 is installed additional in the low temperature straight length 1a of radiant tube 1, can
To improve efficiency of combustion, burning is more abundant, and transformation is convenient, easy to utilize, it is not necessary to removes whole burner, improves resource profit
With rate.The use of the finned accumulation of heat plug-in unit of double helix can significantly improve the uniformity of radiant tube surface temperature distribution, because
Pellet adds the heat exchange area at more than 2 times of radiant tube smoke evacuation end, adds the heat convection between tube wall and high-temperature gas,
The mobility of thermal current is improved, so as to accelerate the heating rate of radiant tube, strengthens the heat transfer of radiation inside pipe wall；Can be with
Improve the combustion conditions of radiant tube, make between Air compress pump maintains stability range, while reduce chemical not exclusively combustion
Burning degree, improve the utilization rate of fuel.
Embodiment 2
Such as Fig. 9, it is with the difference of embodiment 1, radiant tube 1 is W shape pipes.In W shapes radiant tube 1 away from burner 4
Accumulation of heat component 14 is respectively mounted in each straight length 1a, accumulation of heat component 14 includes several double helix fins being sequentially connected from beginning to end
1401。
The utility model is not limited to above-described embodiment, on the basis of technical scheme disclosed in the utility model, this
The technical staff in field is according to disclosed technology contents, it is not necessary to which performing creative labour can is special to some of which technology
Sign makes some and replaces and deform, and these are replaced and deformed in the scope of protection of the utility model.
Claims (9)
1. a kind of air preheating type radiant tube burner, including the radiant tube on furnace wall, radiant tube includes some straight tubes
Section and bend loss, it is characterised in that the both ends of the radiant tube all extend through furnace wall, and two external parts of radiant tube are one on the other
Distribution, the external part of radiant tube two are provided with pressure bulkhead, and the pressure bulkhead wraps corresponding radiant tube external part
Refractory material, refractory material periphery are provided with housing, and housing is fixedly connected close to one end of furnace wall through inner flange with furnace wall, described
The one end of housing away from furnace wall is provided with outward flange, housing above setting corresponding with burner, and burner includes interior pipeline section
And outer segment, pipeline section is stretched into inside radiant tube in burner, and the end of pipeline section is provided with flame jet in burner, burner outer segment
End is passed through combustion gas, and burner outer segment periphery is provided with first flange, and first flange is fixedly connected with corresponding outward flange；Institute's rheme
Housing setting corresponding with air preheater in lower section, one end of air preheater are provided with exhanst gas outlet, in air preheater
Portion is axially arranged set of heat exchange tubes, and one end of set of heat exchange tubes is stretched into inside radiant tube, the other end periphery of the air preheater
Second flange is provided with, second flange is fixedly connected with corresponding outward flange, close to second flange inside the air preheater
Position is provided with sealing supporting plate, and sealing supporting plate, which is provided with, can hold the through hole that set of heat exchange tubes passes through, the air preheater
Downside is provided with air intlet, and preheated air outlet is provided with the upside of air preheater, preheating is provided with the downside of the burner
Air intlet, preheated air outlet are connected between preheated air import through connecting tube；Each radiant tube away from the burner is straight
Accumulation of heat component is equipped with pipeline section, accumulation of heat component includes several fins being sequentially connected from beginning to end.
2. a kind of air preheating type radiant tube burner according to claim 1, it is characterised in that the fin is double spiral shells
Revolve fin, double helix fin and radiant tube match setting, and the both ends of double helix fin are respectively arranged with positioning convex and positioning
Groove, the positioning convex of double helix fin are inserted in the detent of adjacent double helix fin.
A kind of 3. air preheating type radiant tube burner according to claim 2, it is characterised in that the radiant tube it is straight
Inner tube segment is correspondingly respectively arranged with positioning baffle ring positioned at the double helix fin at head and the tail both ends, and the coated inner wall of radiant tube has WC-
Co coatings.
A kind of 4. air preheating type radiant tube burner according to claim 2, it is characterised in that the double helix fin
Pitch be equal to the internal diameter of radiant tube, the axial length of each double helix fin is less than or equal to 2 times of pitch.
5. a kind of air preheating type radiant tube burner according to claim 1-4 any one, it is characterised in that described
The upper side and lower side of air preheater inwall is staggeredly equipped with some deflection plates, and deflection plate is vertical with heat exchanger tube, is set on deflection plate
The through hole that heat exchanger tube passes through can be held by being equipped with, and each heat exchanger tube is in array distribution.
6. a kind of air preheating type radiant tube burner according to claim 1-4 any one, it is characterised in that described
One end that set of heat exchange tubes is stretched into inside radiant tube is provided with sealing baffle, and sealing baffle and radiation inside pipe wall match setting.
7. a kind of air preheating type radiant tube burner according to claim 1-4 any one, it is characterised in that described
Air inlet pipe one is provided with the downside of air preheater, the opening of air inlet pipe is air intlet；It is provided with the upside of air preheater
Escape pipe, the opening of escape pipe export for preheated air, and the end set of escape pipe has the 3rd flange；It is provided with the downside of burner
Air inlet pipe two, the opening of air inlet pipe two is preheated air import, and the end set of air inlet pipe two has the 4th flange；Connecting tube it is upper
End and lower end are equipped with the 5th flange；Underlying 5th flange is fixedly connected with the 3rd flange, the 5th method above
Orchid is fixedly connected with the 4th flange.
8. a kind of air preheating type radiant tube burner according to claim 7, it is characterised in that the air inlet pipe two is set
Put in burner outer segment.
9. a kind of air preheating type radiant tube burner according to claim 1-4 any one, it is characterised in that described
Radiant tube is U-tube or W shape pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661380.2U CN207112802U (en) | 2017-06-08 | 2017-06-08 | A kind of air preheating type radiant tube burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661380.2U CN207112802U (en) | 2017-06-08 | 2017-06-08 | A kind of air preheating type radiant tube burner |
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| Publication Number | Publication Date |
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| CN207112802U true CN207112802U (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720661380.2U Active CN207112802U (en) | 2017-06-08 | 2017-06-08 | A kind of air preheating type radiant tube burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084391A (en) * | 2017-06-08 | 2017-08-22 | 中冶京诚(扬州)冶金科技产业有限公司 | A kind of air preheating type radiant tube burner |
-
2017
- 2017-06-08 CN CN201720661380.2U patent/CN207112802U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084391A (en) * | 2017-06-08 | 2017-08-22 | 中冶京诚(扬州)冶金科技产业有限公司 | A kind of air preheating type radiant tube burner |
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