CN106440777B - Temperature self-regulating regulating device in a kind of tunnel kiln - Google Patents

Temperature self-regulating regulating device in a kind of tunnel kiln Download PDF

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Publication number
CN106440777B
CN106440777B CN201610553366.0A CN201610553366A CN106440777B CN 106440777 B CN106440777 B CN 106440777B CN 201610553366 A CN201610553366 A CN 201610553366A CN 106440777 B CN106440777 B CN 106440777B
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temperature
kiln
shaft
burner
link block
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CN201610553366.0A
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CN106440777A (en
Inventor
许宁
王雪峰
许玥
李亮
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Yangcheng Institute of Technology
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Yangcheng Institute of Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40Arrangements of controlling or monitoring devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045Furnaces with controlled atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36Arrangements of heating devices

Abstract

The invention discloses temperature self-regulating regulating devices in a kind of tunnel kiln.Including:Kiln body, the temperature-adjusting burner being arranged on kiln body side wall are arranged in the air blower of kiln body tail portion, the temperature sensor being arranged in kiln body, PID controller and central controller;It further include temperature-adjusting burner angle adjusting mechanism.Apparatus of the present invention can control the temperature-adjusting burner angle of tunnel oven, fuel gas injection rate, temperature-adjusting burner angular speed, kiln tail blast rate etc., carry out the sintering research of multiple types refractory material, increase the diversity of research, temperature degree of regulation is high compared with original tunnel oven, efficient, executing agency's reaction rate is fast, high degree of automation, pollution are low, has compared with high-environmental and energy saving.

Description

Temperature self-regulating regulating device in a kind of tunnel kiln
Technical field
The present invention relates to temperature self-regulating regulating devices in a kind of tunnel kiln.
Background technology
The burner of original tunnel oven is directly installed on tunnel oven both sides or kiln top, and the position of burner is to immobilize to burn Corners of the mouth degree cannot be adjusted, and both sides kiln wall and kiln top are all that refractory material is piled up.Original tunnel oven temperature can only be by changing Changing air and the jet velocity and extensive style of combustion gas adjust in kiln blast velocity to change kiln temperature.Its fatal disadvantage It is:
One, original tunnel oven changes kiln temperature, sintering temperature variation range by changing air and combustion gas speed Larger, gas flow rate variation range does not also accurately control, and influences the sintering quality of refractory material.
Two, combustion gas and air are not easy turbulent flow and are not easy to be sufficiently mixed original tunnel oven in combustion, and burning is inadequate Fully, and a large amount of polluted gas generates in the process, the production quantity of polluted gas is not easy to control.
Three, original tunnel oven intelligence degree is low, cannot adjust air and combustion gas according to the variation of kiln temperature in real time Speed ratio, the adjusting etc. of burner angle.
Four, upper and lower temperature difference is big in kiln in sintered refractory for original tunnel oven, and many kinds of measures is taken to reduce temperature in kiln The effect unobvious of difference.
Invention content
In view of the above technical problems, the present invention proposes a kind of tunnel oven automatic adjustment temperature studies platform, is controlled using PID The temperature-adjusting burner angle of device processed control tunnel oven, fuel gas injection rate, temperature-adjusting burner angular speed, kiln tail blast rate etc., can be with The sintering research for carrying out multiple types refractory material, increases the diversity of research, the temperature degree of regulation compared with original tunnel oven High, efficient, executing agency's reaction rate is fast, high degree of automation, pollution are low, has compared with high-environmental and energy saving.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme that:
Temperature self-regulating regulating device in a kind of tunnel kiln, including:Kiln body, is set the temperature-adjusting burner being arranged on kiln body side wall It sets in the air blower of kiln body tail portion, the temperature sensor being arranged in kiln body, PID controller and central controller;Further include The first motor that is arranged outside kiln body, the second motor, the first connecting shaft, the second connecting shaft, the first link block, spherical pair, Two link blocks and turning joint seat, wherein first connecting shaft and the second connecting shaft are mutually perpendicular to, and first motor passes through tooth It takes turns transmission and the first one end of the connecting shaft is sequentially connected, the second motor is connected by gear driving pair and the transmission of the second one end of the connecting shaft It connects, the other end of the other end of the first connecting shaft and the second connecting shaft is threadedly coupled with the first link block respectively;First link block On be fixedly connected with the spherical pair, the spherical pair other end is fixedly connected with the second link block, is slidably connected on the second link block described The pipe of temperature-adjusting burner;It is hinged between rotation hinged-support and the pipe of temperature-adjusting burner;The temperature sensor, PID control Device, first motor, the second motor and air blower are connect with the central controller controls.
Further, the temperature-adjusting burner is staggered installation of in tunnel oven both sides.
Further, the temperature-adjusting burner forms angle [alpha] with kiln length direction, and ranging from -23 ~ 23 ° of angle [alpha], temperature adjustment is burnt The angle beta of mouth and the high direction of kiln, ranging from -15 ~ 15 ° of angle beta.
Relative to the tunnel oven of the existing common burner of installation, the present invention has the following advantages:
1. the increased temperature-adjusting burner of the present invention replaces original common burner, thus it is possible to vary the angle of fuel gas injection increases Combustion gas mixing combustion zone, burning are more abundant, reduce the production quantity of polluted gas, reach energy-saving and emission-reduction purpose.
2. the temperature-adjusting burner of the present invention is staggered installation of in tunnel kiln wall both sides, the variation of temperature-adjusting burner angle passes through PID Controller control, temperature-adjusting burner can along kiln length direction left and right adjusting angle, can along the high direction up and down adjustment angle of kiln, The adjustment of burner angle is easier to generate turbulent phenomenon in kiln, and combustion gas and air are sufficiently mixed burning in kiln.
3. the increased temperature-adjusting burner of the present invention is -23 ~ 23 ° with the angled α slewing areas of kiln length direction, temperature-adjusting burner Angle beta slewing area with the high direction of kiln is -15 ~ 15 °, and combustion gas can fully burn to refractory material, can effectively solve tunnel Road kiln upper and lower temperature difference problem.
4. invention increases PID controller, kiln temperature variation can be monitored, changes temperature-adjusting burner angle in real time and becomes Change, fuel gas injection rate, kiln tail blast rate etc., has the function that control temperature change.
5. invention increases PID controller, according to clinkering zone pressure regime in kiln, kiln tail air blower is adjusted in real time and is changed Become the pressure value of kiln tail air blast wind speed and preheating zone, clinkering zone, cooling zone, kiln atmosphere property is controlled, in favor of clinkering zone The slow heating of front adobe is burnt, and brick, which is evenly heated, can avoid the occurrence of evil mind tile product, avoid latter half of in preheating zone And clinkering zone is completely formed reducing atmosphere and brick underburnt phenomenon occurs.
Description of the drawings
Fig. 1 is the high sectional view of tunnel kiln of the present invention;
Wherein, 1 is tunnel kiln bottom;2 be temperature sensor;3 be temperature-adjusting burner;4 be supporting brick;5 be insulation of furnace wall Material;6 be protective cover plate;7 be the angle beta of temperature-adjusting burner and the high direction of kiln;9 be first motor;10 be the first connecting shaft;11 are First link block;12 be spherical pair;13 be the second link block;14 be the pipe of temperature-adjusting burner;15 be rotation hinged-support;19 be Two motors;20 be the second connecting shaft;
Fig. 2 is the long sectional view of tunnel kiln;
Wherein, 16 be temperature-adjusting burner and the angled α of kiln length direction;17 be fired brick;18 be air blower;
Fig. 3 is temperature Automatic adjustment method flow chart in the present invention;
Fig. 4 is temperature automatic adjustment method actuator module connection figure;
Fig. 5 is that temperature-adjusting burner swings up and down temperature profile in tunnel oven;
Fig. 6 is that temperature-adjusting burner swings temperature profile in tunnel oven;
Fig. 7 is thermo parameters method figure in common burner tunnel oven.
Specific implementation mode
Embodiment 1
As shown in Fig. 1 ~ Fig. 2, a kind of kiln temperature self-regulation device, including:Kiln body, the temperature adjustment being arranged on kiln body side wall The air blower 18 in kiln body tail portion, the temperature sensor that is arranged in kiln body and PID controller and control is arranged in burner 3 Device;Further include the first motor 9 being arranged outside kiln body, the second motor 19, the first connecting shaft 10, the second connecting shaft 20, first Link block 11, spherical pair 12, the second link block 13 and turning joint seat 15, wherein first connecting shaft 10 and second connects Spindle 20 is mutually perpendicular to, and first motor 9 is sequentially connected by gear driving pair and 10 one end of the first connecting shaft, and the second motor 19 is logical Gear driving pair and 20 one end of the second connecting shaft is crossed to be sequentially connected, the other end of the first connecting shaft 10 and the second connecting shaft 20 it is another One end is threadedly coupled with the first link block 11 respectively;The spherical pair 12 is fixedly connected on first link block 11, spherical pair 12 is another One end is fixedly connected with the second link block 13, the pipe for the temperature-adjusting burner 3 that is slidably connected on the second link block 13;The rotating hinge It is hinged between bearing 15 and the pipe of temperature-adjusting burner 3;
The angle regulating principle of temperature-adjusting burner is in the present invention:
First motor 9 is sequentially connected by gear driving pair and the first connecting shaft 10, and first link block 11 is for limiting It makes the first connecting shaft 10 and the second connecting shaft 20 moves orthogonally, be spiral shell between the first connecting shaft 10 and the first link block 11 Line connects, and the rotation of the first connecting shaft 10, when the first connecting shaft 10 rotates, the first link block 11 are driven by first motor 9 It can be moved up and down by screw thread and the second connecting shaft 20 is driven to move up and down;Similarly, when the second connecting shaft 20 rotates, first Link block 11 can be by the left and right mobile drive 10 left and right movement of the first connecting shaft of screw thread, and the first link block 11 can be completed multiple The movement of conjunction, you can to reach any point in plane.Spherical pair 12 is fixed with the first link block, and the movement of spherical pair 12 is It can be considered the movement of the first link block 11.
Second link block 13 is that sliding pair is connect with the pipe 14 of temperature-adjusting burner, the pipe 14 and rotating hinge of temperature-adjusting burner Bearing 15 is hinge connection so that burner can move in upper and lower range, simultaneously so that burner can complete left and right model again Interior movement is enclosed, i.e., burner allow to complete compound movement, arrival any point within the scope of 23 ° up and down.
The temperature sensor, PID controller, first motor, the second motor and air blower with the controller control System connection.
As the further preferred of tunnel oven technical solution of the present invention, the temperature-adjusting burner is staggered installation of in tunnel oven two Side.The temperature-adjusting burner of the present invention is staggered installation of in tunnel oven both sides, and the adjustment of burner angle is easier to the generation turbulent flow in kiln and shows As fully burning.
As the further preferred of tunnel oven technical solution of the present invention, the temperature-adjusting burner forms angle [alpha] with kiln length direction, Ranging from -23 ~ 23 ° of angle [alpha], the angle beta of temperature-adjusting burner and the high direction of kiln, ranging from -15 ~ 15 ° of angle beta.By numerical value Simulation show that temperature-adjusting burner and kiln length direction can form ranging from -23 ~ 23 ° of angle [alpha], the i.e. angle of temperature-adjusting burner left-right rotation The angle beta in degree range -23 ~ 23 °, temperature-adjusting burner and the high direction of kiln is -15 ~ 15 °, i.e., the angular range that temperature-adjusting burner rotates upwardly and downwardly It it is -15 ~ 15 °, the rotation up and down of temperature-adjusting burner can increase the combustion zone to refractory material, and refractory material can be uniform Sintering, can effectively solve tunnel oven upper and lower temperature difference problem.
The rotation spray combustion of temperature-adjusting burner up and down is mixed with the cold wind that kiln tail blasts simultaneously, easily forms turbulent closure scheme Evenly, burning more fully, heat utilization efficiency higher, fully burn, it is possible to reduce the generation of polluted gas in kiln, cooling wind is on edge Kiln length direction channel and piled bricks and flow velocity in kiln body gap are fast, convection current is strong, along kiln wide direction channel gas flow rate it is slow, rapid Intensity of flow is weak, and dust pollution object is concentrated mainly in kiln wide direction gap, and concentration is gradually increased along kiln length direction, under cooling wind It gets together for fun collection, along the high direction of kiln, as height increases, dust concentration is lower and lower, achieves energy-saving and emission reduction purposes.
As shown in Figure 3 and Figure 4, the present invention increases PID controller, and the sintering temperature of certain refractory material of tunnel kiln sintering is Fixed T values and setting temperature difference ε, are fixed preheating time, sintering time, cooling time, when thermocouple temperature in kiln When the temperature value for spending sensor feedback is Ti, Ti can be compared by PID controller with the difference of T, if the two difference is more than ε, corresponding angular speed, kiln tail blast rate of the rotation of angle, fuel gas injection rate, burner for adjusting temperature-adjusting burner injection etc. because Element, it is therefore an objective to which Ti and T differences are maintained within the scope of rational temperature difference ε.
The increased PID controller executing agency of the present invention is as shown in Figure 3 and Figure 4, and thermocouple temperature sensor feeds back Ti values, Ti is compared with the difference of T, if it is maximum Low Temperature Difference to feed back to temperature controller, kiln is controlled by electro-hydraulic proportional valve The wind speed of a tail wind machine, electro-hydraulic proportional valve are that proportion electro-magnet input voltage signal generates corresponding actions in valve, make work valve core Displacement is generated, port size changes and completes pressure proportional to input voltage, flow output element with this.Spool displacement It can also be fed back in the form of machinery, hydraulic pressure or electricity.Electro-hydraulic proportional valve has form wide variety, is easy to form using electrical And computer controls that various electrohydraulic systems, control accuracy are high, installs and uses flexibly and many-sided advantages such as contamination resistance is strong, Application field is increasingly widened, and entire kiln gas flow velocity is accelerated, meet preheating zone in kiln, clinkering zone, cooling zone pressure requirements, Reach best firing atmosphere, ensures the quality of brick.If it is maximum temperature difference to feed back to temperature controller, electricity is continued through Liquid proportional valve controls the injection rate of temperature-adjusting burner combustion gas and air, keeps rational air-fuel ratio, reaches control sintering temperature Purpose.
If multigroup Ti is compared with the difference of T, i.e., multigroup temperature difference ε, which compares, differs larger, i.e., burning is uneven in kiln The even temperature difference is larger, passes the signal along to angle controller, is amplified the signal of feedback by amplifier, finally by motor And executing agency adjust temperature-adjusting burner swing angle, swing angular speed etc., achieve the purpose that control kiln in sintering temperature.
Fig. 5, Fig. 6, Fig. 7 are respectively distribution situation of the temperature-adjusting burner in Difference angles simulation kiln temperature field, temperature Field distribution cloud atlas color is higher close to black table temperature displaying function, and burner is swung up and down or rectangular to the left along kiln along the high direction of kiln Right swing is easy to generate turbulent flow, and strong turbulent flow is easy to combustion gas and is sufficiently mixed with air, and burning is more abundant, is burnt in turbulent region Junction temperature is higher, and Fig. 5, Fig. 6 install that common burner kiln temperature field distribution is uniform compared to sintering temperature and sintering temperature with Fig. 7 The region of height, Temperature Distribution is more uniform, can reduce the upper and lower temperature difference in kiln, improves refractory material sintering quality.

Claims (3)

1. temperature self-regulating regulating device in a kind of tunnel kiln, which is characterized in that including:Kiln body, the tune being arranged on kiln body side wall Warm burner is arranged in the air blower of kiln body tail portion, the temperature sensor being arranged in kiln body, PID controller and center control Device;Further include the first motor being arranged outside kiln body, the second motor, the first connecting shaft, the second connecting shaft, the first link block, Spherical pair, the second link block and turning joint seat, wherein first connecting shaft and the second connecting shaft are mutually perpendicular to, and first Motor is sequentially connected by gear driving pair and the first one end of the connecting shaft, and the second motor passes through gear driving pair and the second connecting shaft One end is sequentially connected, and the other end of the other end of the first connecting shaft and the second connecting shaft is threadedly coupled with the first link block respectively; The spherical pair is fixedly connected on first link block, the spherical pair other end is fixedly connected with the second link block, is slided on the second link block The pipe of the dynamic connection temperature-adjusting burner;It is hinged between rotation hinged-support and the pipe of temperature-adjusting burner;The temperature sensing Device, PID controller, first motor, the second motor and air blower are connect with the central controller controls.
2. kiln temperature self-regulation device according to claim 1, which is characterized in that the temperature-adjusting burner is staggered installation of Tunnel oven both sides.
3. kiln temperature self-regulation device according to claim 1, which is characterized in that the temperature-adjusting burner and kiln length direction Formed angle [alpha], ranging from -23 ~ 23 ° of angle [alpha], the angle beta of temperature-adjusting burner and the high direction of kiln, angle beta ranging from -15 ~ 15°。
CN201610553366.0A 2016-07-14 2016-07-14 Temperature self-regulating regulating device in a kind of tunnel kiln Active CN106440777B (en)

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CN106440777B true CN106440777B (en) 2018-10-02

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CN109539766B (en) * 2018-11-14 2020-11-10 楚天科技股份有限公司 Anti-disturbance accurate temperature control method for heating section of tunnel oven

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CN2509455Y (en) * 2001-12-05 2002-09-04 上海申东燃烧炉有限公司 Adjustable combustion angle burner
JP5795560B2 (en) * 2011-07-27 2015-10-14 中外炉工業株式会社 Furnace for thermal processing of workpieces
CN103791716A (en) * 2012-11-04 2014-05-14 西安众智惠泽光电科技有限公司 Tunnel kiln automatic control and management system
CN204594203U (en) * 2015-04-24 2015-08-26 烟台市汇通燃气发展有限公司 A kind of sintering of catalyst kiln

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