CN110157870A - Bell-type annealing device with heat recovery function - Google Patents
Bell-type annealing device with heat recovery function Download PDFInfo
- Publication number
- CN110157870A CN110157870A CN201910600062.9A CN201910600062A CN110157870A CN 110157870 A CN110157870 A CN 110157870A CN 201910600062 A CN201910600062 A CN 201910600062A CN 110157870 A CN110157870 A CN 110157870A
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- combustion
- air
- inner cover
- pedestal
- bell
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- 238000000137 annealing Methods 0.000 title claims abstract description 29
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000009826 distribution Methods 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims description 24
- 239000010410 layer Substances 0.000 claims description 20
- 239000000567 combustion gas Substances 0.000 claims description 17
- 239000002737 fuel gas Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 239000003517 fume Substances 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 230000036760 body temperature Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000001727 in vivo Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
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- 230000001590 oxidative effect Effects 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
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- 239000005439 thermosphere Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
- C21D9/675—Arrangements of charging or discharging devices
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
- C21D9/677—Arrangements of heating devices
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Supply (AREA)
Abstract
The present invention relates to a kind of bell-type annealing device with heat recovery function, including pedestal, inner cover and heating mantles, the lower end fixing seal of the inner cover is on the pedestal, the heating mantles are covered on the outside of inner cover and its lower end fixing seal on the pedestal, on the inside of the heating mantles, on the outside of inner cover and pedestal surrounds a closed combustion chamber, the pedestal includes the bottom plate from bottom to top set gradually, thermal insulation board, air distribution disk and carrier, the bottom plate is fixed in pedestal, for placing the Wire frame of loading wire on the carrier, equipped with blade that is several uniform and being spaced apart in the air distribution disk, the carrier is equipped with several equally distributed air holes, blower is equipped in the air distribution disk, the first drive motor is connected below the blower.Air distribution disk is equipped in this annealing device, gas heats product even into inner cover by the air distribution disk, therefore promotes the uniformity that interior case temperature and pedestal are heated.
Description
Technical field
The present invention relates to annealing devices, and in particular to a kind of bell-type annealing device with heat recovery function.
Background technique
Annealing is a common technology in material processing, in order to reach certain characteristic, such as reduces the hardness of workpiece
And its plasticity is improved, workpiece needs after heating, is kept for a period of time, and then slow cooling is to obtain this kind of performance, annealing
Furnace is process equipment indispensable in annealing processing.Bell-jar spheroidizing annealing furnace is generallyd use at present, existing annealing furnace is big
It all include heating enclosure, inner cover and pedestal, wherein pedestal is equipped with care feed tray, and inner cover covers on pedestal, and heating enclosure covers on interior
Cover is outer, but annealing furnace has the disadvantage in that the disadvantages such as non-uniform temperature in inner cover, fuel economy be low at present.
Summary of the invention
In order to overcome drawbacks described above, the present invention provides a kind of bell-type annealing device with heat recovery function, this annealing dress
Air distribution disk is equipped in setting, gas heats product even into inner cover by the air distribution disk, therefore promotes in inner cover
The uniformity that temperature and pedestal are heated.
The present invention is to solve technical solution used by its technical problem:
A kind of bell-type annealing device with heat recovery function, including pedestal, inner cover and heating mantles, the lower end of the inner cover
Fixing seal is on the pedestal, and the heating mantles are covered on the outside of inner cover and its lower end fixing seal is on the pedestal,
On the outside of the heating mantles inside, inner cover and pedestal surrounds a closed combustion chamber, and the pedestal includes from bottom to top successively setting
Bottom plate, thermal insulation board, air distribution disk and the carrier set, the bottom plate are fixed in pedestal, are loaded on the carrier for placing
The Wire frame of wire rod, the air distribution disk is interior equipped with blade that is several uniform and being spaced apart, and the carrier is equipped with several equal
The air hole of even distribution, the air distribution disk is interior to be equipped with blower, connects the first drive motor below the blower.
Preferably, the rounded bell shape of the inner cover, the inner cover include interior cover body and are fixedly connected on inner cover sheet
The lower end of the top cover of body upper end, the interior cover body is removably sealed on bottom plate, the top cover of the inner cover and interior cover body
It is integrally formed or welding fabrication.
Preferably, it is fixedly connected between the inner cover and bottom plate by hydraulic tongs, and the O-shaped liquid by being equipped between the two
Pressure seal ring sealing, the interior cover body lower end are equipped with interlayer, and the interlayer is connect with water pipe, and recirculated water enters folder by water pipe
O-shaped hydraulic sealing ring is directly acted in layer.
Preferably, the carrier is equipped with the placement that grid is convenient for Wire frame, and the impeller of the blower is antecurvature formula knot
Structure, first drive motor are connected to the impeller of blower by the motor drive shaft of major diameter to which impeller rotates, and described the
The front end of one drive motor is additionally provided with large scale ring flange.
Preferably, the heating mantles include shell, heat regenerator, combustion system, for combustion-aid air system and for combustion gas system
System, the heat regenerator are removably mounted on the outside of shell, the combustion system, for combustion-aid air system and for combustion gas system
System is all located at the outside of shell, fume pipe is equipped in the shell, which is connected to heat regenerator, and high-temperature flue gas passes through
It is discharged after heat regenerator is cooling by exhanst gas outlet, the heat regenerator is by the cold combustion-aid air pipe connection of the upper end for combustion-supporting
Air system connects combustion system by the hot combustion-aid air pipe of its lower end, which connects the fuel gas supply system.
Preferably, it is equipped with 12 independent combustion systems altogether, each combustion system is furnished with a heat regenerator, the burning
System is divided into upper and lower two layers, and 6 every layer, which is circumferentially distributed evenly in hull outside along lower part of the housing, and on
Lower layer's combustion system is spaced apart from each other design.
Preferably, each combustion system includes low nitrogen oxide burner, fire rod and UV flame monitor, the combustion
The nozzle of burner is fixed on the lower part of the housing, and the spitfire end of the nozzle is located on the inside of lower part of the housing, and near burner
Ceramic fibre insulation and its bracket are equipped in shell.
Preferably, the heat regenerator is the internal heat exchanger with helix tube, and cold combustion air passes through out of helix tube,
Flue gas is flowed through outside helix tube and is heated to the air in helix tube, it is described for combustion-aid air system include air blower,
Air pipe line, control valve and the second drive motor, the air blower is by outside air by air pipe line and through control valve
Heat regenerator heating is delivered to after section, second drive motor is used for adjusting control valve, and the fuel gas supply system includes combustion gas
Pipeline, gas control valve and Quick connector for combustion gas, the Quick connector for combustion gas is for connecting outer combustion gas source, the combustion gas control
Valve is for controlling gas flow appropriate.
It preferably, further include control cabinet and thermometer, the control cabinet is installed on the outside of shell, sets in the control cabinet
There is control system, the control system is for controlling for combustion-aid air system, combustion system and fuel gas supply system, the thermometer
For monitoring shell body temperature in shell.
Preferably, the thermal insulation board is that stainless steel plate is coated on the enwraped type thermal insulation board of ceramic fiber cotton plate, the inner cover,
Air distribution disk and carrier are all 304 stainless steel products, and the heating mantles are in circle bell shape, and the case inside is equipped with heat-insulated
Layer, the thermal insulation layer are ceramic fiber layer, are equipped with expansion joint on the cold comburent air duct, the housing bottom be equipped with every
Hot item.
The beneficial effects of the present invention are:
1) present invention uses the blower of antecurvature formula and cooperates air distribution disk that can obtain optimal gaseous exchange effect, high convection current
High average temperature performance is generated so as to shorten processing time and there is more effective utilization rate of equipment and installations, and then obtains higher quality
Product, while can also guarantee that pedestal is heated evenly, the phenomenon that will not deforming；
2) the inner cover inside and outside wall in the present invention uses corrugated structure, is conducive to be heated or cooled, use in inner cover
Recirculated water is used for the sealing of hydraulic tongs, and hydraulic tongs are carried out automatically controlling by PLC system, and inner cover is close by hydraulic tongs and sealing ring
Envelope provides the environment of a sealing for gaseous exchange, can reduce the consumption of energy；
3) heat regenerator is configured in the present invention in each combustion system, using this specific dispersion formula recuperation of heat shape
At, fully combustion air can be heated, and burner use tangent-type heavy impulse burner, gas proportion appropriate
Fuel economy is greatly improved in control and two layers of burner distribution, while by significantly before the discharge of flue gas exhaust gas
Ground cooling, simplifies fume treatment process；High temperature limiter, safety fusing valve and UV inductor detection fire are set in the present invention
The safety measures such as flame, therefore security performance is high, also has many advantages, such as that easy to maintenance, heat-proof quality is good.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of pedestal in the present invention；
Fig. 3 is the structural schematic diagram of inner cover in the present invention；
Fig. 4 is the structural schematic diagram of the first drive motor in the present invention；
Fig. 5 is the structural schematic diagram of heating mantles in the present invention；
Fig. 6 is the schematic internal view of heating mantles in the present invention；
In figure: 10- pedestal, 11- bottom plate, 12- thermal insulation board, 13- air distribution disk, 14- carrier, 15- pedestal, 20- inner cover,
21- top cover, cover body in 22-, 23- sealing ring, 24- interlayer, 25- water pipe, the first drive motor of 30-, 31- blower, 40- wire rod
Frame, 41- wire rod, 50- heating mantles, 51- shell, 52- thermal insulation layer, 53- fume pipe, 54- heat insulating strip, 55- control cabinet, 56- temperature
Meter, 60- heat regenerator, the cold combustion-aid air pipe of 61-, the hot combustion-aid air pipe of 62-, 70- combustion system, 71- burner, 72- igniting
Stick, 80- are supplied for combustion-aid air system, 81- air blower, 82- air pipe line, 83- control valve, the second drive motor of 84-, 90-
Gas burning system, 91- fuel gas pipeline, 92- gas control valve, 93- Quick connector for combustion gas.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment: as shown in figures 1 to 6, a kind of bell-type annealing device with heat recovery function, including pedestal 10, inner cover 20
With heating mantles 50, for the lower end fixing seal of the inner cover 20 on the pedestal 10, the heating mantles 50 are covered on the outer of inner cover
Side and its lower end fixing seal are on the pedestal 10, on the inside of the heating mantles, on the outside of inner cover and pedestal 10 surrounds a closing
Combustion chamber, the pedestal 10 includes the bottom plate 11, thermal insulation board 12, air distribution disk 13 and the carrier 14 that from bottom to top set gradually,
The bottom plate 11 is fixed in pedestal 15, and the pedestal 15 is concrete foundation, is used to place loading line on the carrier 14
The Wire frame 40 of material 41, the air distribution disk 13 is interior equipped with blade that is several uniform and being spaced apart, and the carrier 14 is equipped with
Several equally distributed air holes, the air distribution disk 13 is interior to be equipped with blower 31, connects the first drive motor below the blower 31
30.Air distribution disk 13 is used in the present invention, air distribution disk can promote the consistency of temperature, and can share wire rod to carrier
Pressure is loaded, thermal insulation board 12 can separate blower 31 with heating zone, extend the service life of blower, and thermal insulation board 12 is ceramics
One layer of stainless steel plate of fiber cotton plate thermal insulation board outer cladding, therefore the pollutant on wire rod will not enter inside thermal insulation board, and interior
The thermal insulation board of packet mode is dried without before test run, has been saved time and economic cost, has been used high-purity in this annealing device
For hydrogen as high convection gas, hydrogen is the lightest element, therefore minimal amount of electric energy can be used can stir a large amount of gas
Body, the present invention use the blower 31 of antecurvature formula and cooperate air distribution disk 13 that can obtain optimal gaseous exchange effect, and height is to miscarriage
Raw high average temperature performance is so as to shorten processing time and has more effective utilization rate of equipment and installations, and then obtains the production of higher quality
Product, and heating region is isolated using thermal insulation board, the loss of energy is reduced, this annealing device has 50 tons of vast capacity, reduces
Product average operation cost.
The thermal insulation board 12 is the enwraped type thermal insulation board that stainless steel plate is coated on ceramic fiber cotton plate, and the inner cover 20 divides
Gas disk 13 and carrier 14 are all 304 stainless steel products, the heating mantles 50 be in circle bell shape, the case inside be equipped with every
Thermosphere 52, the thermal insulation layer are ceramic fiber layer, are equipped with expansion joint on the cold comburent air duct, the housing bottom is set
There is heat insulating strip 54.That is, thermal insulation board includes the stainless steel plate of internal ceramic fiber cotton plate and outside, stainless steel plate is coated on
The outside of ceramic fiber cotton plate.
As shown in Figure 2 and Figure 4, the carrier 14 is equipped with the placement that grid is convenient for Wire frame, the leaf of the blower 31
Wheel is antecurvature formula structure, and first drive motor 30 is connected to the impeller of blower by the motor drive shaft of major diameter to movable vane
Wheel rotation, the front end of first drive motor is additionally provided with large scale ring flange.It is equipped with grid on carrier 14 and is convenient for wire rod
Frame is placed in any position of carrier, is also suitble to the Wire frame of plurality of specifications, and the blower 31 being equipped with can promote inside inner cover
The consistency of temperature can generate higher total pressure using antecurvature formula impeller to obtain the consistent product of performance height, this knot
The blower of structure especially suitable for generated in inner cover higher resistance environment using and blower motor band cooling recirculation system reduce
The heat that motor coil generates reduces revolution electric current in turn to save electric energy and extend service life of fan, and blower can be according to interior
Portion's pressure carrys out synchronous variable-speed operation；The motor drive shaft of major diameter and the ring flange of super large help to mitigate fan vibration to motor
It influences, to prolong its service life.
As shown in figure 3, the rounded bell shape of inner cover, which includes interior cover body 22 and is fixedly connected on
The lower end of the top cover 21 of interior cover body upper end, the interior cover body is removably sealed on bottom plate 11, the top cover of the inner cover
21 and interior cover body 22 is integrally formed or welding fabrication.It is fixedly connected between the inner cover 20 and bottom plate 11 by hydraulic tongs,
And sealed between the two by the O-shaped hydraulic sealing ring 23 being equipped with, interior 22 lower end of cover body is equipped with interlayer 24, the interlayer
24 connect with water pipe 25, and recirculated water is entered in interlayer 24 by water pipe 25 directly acts on O-shaped hydraulic sealing ring 23.Hydraulic tongs are adopted
Sealing function is played with conventional hydraulic tongs, attached to be not shown in the figure, the bottom mechanical machined surface and O-ring seal 23 of inner cover
It is fully sealed, prevents any leakage, 20 inside and outside wall of inner cover uses corrugated structure, is conducive to be heated or cooled, the circulation
Water is used for the sealing of hydraulic sealing ring, and hydraulic tongs are carried out automatically controlling by PLC system, inner cover by hydraulic tongs and sealing ring with
Bottom plate sealing provides one for gaseous exchange and seals and avoid the environment that oxidizing gas entrance causes carbon metal oxidation and decarbonization,
It can reduce the consumption of energy.
As shown in Figure 5 and Figure 6, the heating mantles 50 include shell 51, heat regenerator 60, combustion system 70, for combustion-supporting sky
Gas system 80 and fuel gas supply system 90, the heat regenerator 60 are removably mounted on the outside of shell, the combustion system 70,
All it is located at the outside of shell for combustion-aid air system 80 and fuel gas supply system 90, is equipped with fume pipe 53, the cigarette in the shell 51
Tracheae 53 is connected to heat regenerator 60, and high-temperature flue gas is discharged after heat regenerator is cooling by exhanst gas outlet, and the heat is returned
It receives device 60 to be connected to by the cold combustion-aid air pipe 61 of the upper end for combustion-aid air system, passes through the hot combustion-aid air pipe 62 of its lower end
Combustion system 70 is connected, which connects the fuel gas supply system.In use, external combustion gas passes through fuel gas supply system
90 enter combustion system 70, and external combustion air is by entering the heat regenerator positioned at hull outside for combustion-aid air system
60, the interior high-temperature flue gas to burn of annealing furnace heats cold combustion air into heat regenerator by fume pipe 53, quilt
Combustion air after heating enters combustion system auxiliary combustion by hot combustion-aid air pipe, and the flue gas after being cooled is gone out by flue gas
Mouth is expelled to flue gas processing device, a heat regenerator is configured in the present invention in each combustion system, using this specific dispersion
Formula recuperation of heat is formed, and can fully heat to combustion air, fuel economy is greatly improved.
Heating mantles are equipped with 12 independent combustion systems 70 altogether in the present embodiment, and each combustion system is furnished with a recuperation of heat
Device 60, the combustion system are divided into upper and lower two layers, and 6 every layer, which is circumferentially evenly distributed along 51 lower part of shell
In hull outside, and upper and lower level combustion system is spaced apart from each other design.Each combustion system 70 include low nitrogen oxide burner 71,
Fire rod 72 and UV flame monitor, the nozzle of the burner 71 are fixed on the lower part of the housing, the spitfire end of the nozzle
On the inside of lower part of the housing, and Ceramic fibre insulation and its bracket are equipped in the shell near burner.All burnings
System and heat regenerator are public a set of for combustion-aid air system and fuel gas supply system, and burner 71 is burnt using tangent-type heavy impulse
Device, directly-firing using gas fuel, gas proportion appropriate control, two layers of burner distribution and each burner are equipped with one
Branch heat regenerator greatly improves fuel combustion efficiency.The heat regenerator 60 is the internal heat exchanger with helix tube, cold
Combustion air passes through out of helix tube, and flue gas is flowed through outside helix tube and heated to the air in helix tube, described for helping
Firing air system 80 includes air blower 81, air pipe line 82, control valve 83 and the second drive motor 84, the air blower 81
Outside air is delivered to heat regenerator heating through air pipe line and after control valve is adjusted, second drive motor 84 is used
In adjusting control valve 83, the fuel gas supply system 90 includes fuel gas pipeline 91, gas control valve 92 and Quick connector for combustion gas 93, institute
Quick connector for combustion gas 93 is stated for connecting outer combustion gas source, the gas control valve 92 is for controlling gas flow appropriate.Heat
Recover is that a kind of heat exchanger preheats air using the flue gas after burning, and air is sent to burner after preheating and combustion gas is mixed
After-combustion is closed, air themperature, to improve efficiency of combustion, can save fuel, while the cigarette discharged to 300 DEG C or so after preheating
The decline of temperature degree, mitigates environmental pollution.
As shown in fig. 6, further including control cabinet 55 and thermometer 56, the control cabinet 55 is installed on the outside of shell 51, institute
It states and is equipped with control system in control cabinet, the control system is for controlling for combustion-aid air system, combustion system and for combustion gas system
System, the thermometer 56 are located in shell for monitoring shell body temperature.Automatic control, operation are realized using control system
Personnel operate the i.e. controllable whole process in the interface PLC.
Operating process of the invention:
Step 1: operator selects the program to be executed, and the Wire frame 40 for being loaded with wire rod 41 is transported to the carrying of pedestal
On disk 14, inner cover is placed on pedestal 10 with the dedicated lifting tool of inner cover 20；
Step 2: recirculated water is connected manually and opens recirculated water valve, hydraulic clamp switch is turned off manually, hydraulic tongs is locked
Firmly inner cover 20；
Step 3: choosing the program of spheroidizing process in software systems, and click leak-testing, and test passes through rear automatic
Start to be filled with nitrogen, then system prompt fills heating mantles 50；
Step 4: heating mantles 50 are sling using driving, locating piece is sheathed on the guide post that pedestal is equipped on heating mantles 50
And make heating mantles along guide post uniform descent, complete the operation of lid furnace；
Step 5: after completing connection system wiring seat and natural gas line, it is manually pressed by 50 electronic box start button of heating mantles
Etc. green lights when open again natural gas valve complete blow-on movement, oxygen analyser confirm nitrogen charging after the completion of again with hydrogen displacement nitrogen
Gas；
Step 6: carrying out nodularization process, and the burner 71 in heating mantles 50 forms flame in combustion chamber, in flame heating
Cover 20, inner cover 20 conducts heat via radiation, heat is transmitted to internal wire rod 41, the transmitting of heat ecto-entad is set in pedestal 10
Blower 31 drives circulation protective gas, strengthens convective heat transfer, and uniform temperature；Operator observes temperature curve in software systems
Whether normal operation, and observe igniter etc. whether normal operation；
Step 7: after nodularization, system prompt removes heating mantles 50, by heating mantles and control cabinet connecting line and
Natural gas connection hose is all pulled out, and heating mantles are hung to spacious area's cooling using driving；
Step 8: cooling down inner cover 20 using Industrial fan, etc. temperature in system alert is removed when being down to setting value
Cover opens hydraulic clamp switch manually, closes circulation taps, pulls out circulating water structure, then inner cover is hung to spacious area；
Step 9: the good wire rod 41 of nodularization is hung out and is put in cooling zone, is cooled to room temperature rear outlet.
It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the premise, may be used also
To make several modifications and improvements, these are all within the scope of protection of the present invention.Therefore, the scope of protection of the patent of the present invention should be with
Subject to appended claims.
Claims (10)
1. a kind of bell-type annealing device with heat recovery function, it is characterised in that: including pedestal (10), inner cover (20) and heating
It covers (50), for the lower end fixing seal of the inner cover (20) on the pedestal (10), the heating mantles (50) are covered on inner cover
Outside and its lower end fixing seal are on the pedestal (10), on the inside of the heating mantles, on the outside of inner cover and pedestal (10) surrounds
One closed combustion chamber, the pedestal (10) include the bottom plate (11) from bottom to top set gradually, thermal insulation board (12), air distribution disk
(13) it is fixed in pedestal (15) with carrier (14), the bottom plate (11), loads line for placing on the carrier (14)
The Wire frame (40) of material (41), the air distribution disk (13) are interior equipped with blade that is several uniform and being spaced apart, the carrier
(14) several equally distributed air holes are equipped with, blower (31) are equipped in the air distribution disk (13), below the blower (31)
Connect the first drive motor (30).
2. the bell-type annealing device according to claim 1 with heat recovery function, it is characterised in that: the inner cover is in circle
Shape bell shape, the inner cover (20) include interior cover body (22) and the top cover (21) for being fixedly connected on interior cover body upper end, institute
The lower end for stating interior cover body is removably sealed on bottom plate (11), and the top cover (21) and interior cover body (22) of the inner cover are one
Body formed or welding fabrication.
3. the bell-type annealing device according to claim 2 with heat recovery function, it is characterised in that: the inner cover (20)
It is fixedly connected between bottom plate (11) by hydraulic tongs, and passes through O-shaped hydraulic sealing ring (23) sealing being equipped with, institute between the two
Interior cover body (22) lower end is stated equipped with interlayer (24), the interlayer (24) connect with water pipe (25), and recirculated water passes through water pipe (25)
O-shaped hydraulic sealing ring (23) are directly acted in into interlayer (24).
4. the bell-type annealing device according to claim 1 with heat recovery function, it is characterised in that: the carrier
(14) it is equipped with the placement that grid is convenient for Wire frame, the impeller of the blower (31) is antecurvature formula structure, the first driving horse
The impeller of blower is connected to which impeller rotates, before first drive motor by the motor drive shaft of major diameter up to (30)
End is additionally provided with large scale ring flange.
5. the bell-type annealing device according to claim 1 with heat recovery function, it is characterised in that: the heating mantles
(50) include shell (51), heat regenerator (60), combustion system (70), for combustion-aid air system (80) and fuel gas supply system
(90), the heat regenerator (60) is removably mounted on the outside of shell, the combustion system (70), for combustion-aid air system
(80) and fuel gas supply system (90) is all equipped with fume pipe (53) in the outside of shell, the shell (51), the fume pipe
(53) it is connected to heat regenerator (60), and high-temperature flue gas is discharged after heat regenerator is cooling by exhanst gas outlet, the heat is returned
It receives device (60) to be connected to by the cold combustion-aid air pipe (61) of the upper end for combustion-aid air system, passes through the hot combustion air of its lower end
(62) connection combustion system (70) is managed, which connects the fuel gas supply system.
6. the bell-type annealing device according to claim 5 with heat recovery function, it is characterised in that: be equipped with 12 altogether solely
Vertical combustion system (70), each combustion system are furnished with a heat regenerator (60), and the combustion system is divided into upper and lower two layers,
And 6 every layer, which is circumferentially distributed evenly in hull outside, and upper and lower level combustion system phase along shell (51) lower part
Mutual spaced design.
7. the bell-type annealing device according to claim 6 with heat recovery function, it is characterised in that: each combustion system
It (70) include low nitrogen oxide burner (71), fire rod (72) and UV flame monitor, the nozzle of the burner (71)
It is fixed on the lower part of the housing, the spitfire end of the nozzle is located on the inside of lower part of the housing, and is equipped in the shell near burner
Ceramic fibre insulation and its bracket.
8. the bell-type annealing device according to claim 5 with heat recovery function, it is characterised in that: the heat regenerator
It (60) is the internal heat exchanger with helix tube, cold combustion air passes through out of helix tube, and flue gas flows through and right outside helix tube
Air in helix tube is heated, it is described for combustion-aid air system (80) include air blower (81), air pipe line (82), control
Valve (83) processed and the second drive motor (84), the air blower (81) is by outside air by air pipe line and through control valve
Heat regenerator heating is delivered to after section, second drive motor (84) is used for adjusting control valve (83), the fuel gas supply system
It (90) include fuel gas pipeline (91), gas control valve (92) and Quick connector for combustion gas (93), the Quick connector for combustion gas (93) is used
In connection outer combustion gas source, the gas control valve (92) is for controlling gas flow appropriate.
9. the bell-type annealing device according to claim 5 with heat recovery function, it is characterised in that: further include control cabinet
(55) it is installed on the outside of shell (51), is equipped with control system in the control cabinet with thermometer (56), the control cabinet (55),
For the control system for controlling for combustion-aid air system, combustion system and fuel gas supply system, the thermometer (56) is located at shell
In vivo for monitoring shell body temperature.
10. the bell-type annealing device according to claim 5 with heat recovery function, it is characterised in that: the thermal insulation board
(12) the enwraped type thermal insulation board of ceramic fiber cotton plate, the inner cover (20), air distribution disk (13) and carrying are coated on for stainless steel plate
Disk (14) is all 304 stainless steel products, and the heating mantles (50) are in circle bell shape, and the case inside is equipped with thermal insulation layer
(52), the thermal insulation layer is ceramic fiber layer, is equipped with expansion joint on the cold comburent air duct, the housing bottom is equipped with
Heat insulating strip (54).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600062.9A CN110157870A (en) | 2019-07-02 | 2019-07-02 | Bell-type annealing device with heat recovery function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600062.9A CN110157870A (en) | 2019-07-02 | 2019-07-02 | Bell-type annealing device with heat recovery function |
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| CN110157870A true CN110157870A (en) | 2019-08-23 |
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| CN201910600062.9A Pending CN110157870A (en) | 2019-07-02 | 2019-07-02 | Bell-type annealing device with heat recovery function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876564A (en) * | 2020-07-14 | 2020-11-03 | 昆山正通铭金属有限公司 | Spheroidizing annealing process of hexagonal alloy tool steel S2 |
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