CN108662899A - For reducing the control system of stove inner metal liquid body temperature difference fluctuation - Google Patents
For reducing the control system of stove inner metal liquid body temperature difference fluctuation Download PDFInfo
- Publication number
- CN108662899A CN108662899A CN201810548506.4A CN201810548506A CN108662899A CN 108662899 A CN108662899 A CN 108662899A CN 201810548506 A CN201810548506 A CN 201810548506A CN 108662899 A CN108662899 A CN 108662899A
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- molten aluminum
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- atmosphere
- controller
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- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 230000036760 body temperature Effects 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 title claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 98
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 2
- 235000010210 aluminium Nutrition 0.000 description 79
- 238000010586 diagram Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 229910052875 vesuvianite Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/20—Arrangement of controlling, monitoring, alarm or like devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/04—Arrangements of indicators or alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
- F27D2019/0018—Monitoring the temperature of the atmosphere of the kiln
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/01—Charges containing mainly non-ferrous metals
- F27M2001/012—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a kind of control systems for reducing the fluctuation of stove inner metal liquid body temperature difference, including molten aluminum holding furnace, further include triac controller, heating module, temperature control modules, hand automatic Regulation module, hand automatic control module, the molten aluminum holding furnace, heating module, temperature control modules, hand automatic Regulation module are connect with the triac controller, the hand automatic control module is connect with temperature control modules, hand automatic Regulation module respectively, and the temperature sensing assembly being connect with the temperature control modules is equipped in the molten aluminum holding furnace.Present invention energy stability contorting molten aluminum heat preservation in-furnace temperature, heat utilization rate is high, difference variation is small, safe and practical, high efficient and reliable.
Description
Technical field
The present invention relates to casting technology fields, more specifically, it relates to a kind of poor for reducing stove inner metal liquid body temperature
The control system of fluctuation.
Background technology
Molten aluminum holding furnace is most important equipment in aluminium alloy industry, and aluminium alloy pouring temperature generally in 720-740 degree, is
Ensure molten aluminum thermally equivalent and reach the temperature of manufacturing requirements, electrothermal tube otherwise stop heating to keep aluminium alloy to be in always
Molten condition.The shortcomings that molten aluminum holding furnace is：Temperature control is unstable, and difference variation is big.Because temperature factor is to pouring cast part
The problems such as quality is affected, and overtemperature cast is also easy to produce bubble, stomata, shrinkage cavity, cast cold easily form cellular dendrite, blocking gold
Belong to liquid flowing, underpriming, lack the problems such as meat is lacked on side, excessive temperature or excessively low temperature casting type chamber sand core all can be to casting
Many quality problems are caused, are directly scrapped when serious.
Invention content
The technical problem to be solved by the present invention is to the above-mentioned deficiency for the prior art, the present invention provides a kind of can stablize and controls
It is small, safe and practical, high efficient and reliable for reducing golden in stove that molten aluminum processed keeps the temperature in-furnace temperature, heat utilization rate height, difference variation
Belong to the control system of liquid temperature differential fluctuation.
The technical scheme is that such：A kind of control system for reducing the fluctuation of stove inner metal liquid body temperature difference, packet
Molten aluminum holding furnace is included, further includes that triac controller, heating module, temperature control modules, hand automatic Regulation module, hand are controlled automatically
Molding block, the molten aluminum holding furnace, heating module, temperature control modules, hand automatic Regulation module are controlled with the thyristor
Device connects, and the hand automatic control module is connect with temperature control modules, hand automatic Regulation module respectively, the molten aluminum holding furnace
It is interior equipped with the temperature sensing assembly being connect with the temperature control modules.
As a further improvement, the temperature sensing assembly includes the molten aluminum thermocouple being inserted into molten aluminum, is located at molten aluminum
The atmosphere thermocouple of top, the temperature control modules include the molten aluminum temperature controller being connect with molten aluminum thermocouple and atmosphere thermoelectricity
The coupled atmosphere temperature controller connect.
Further, the control system further includes operation panel, and the operation panel is equipped with and is controlled automatically with hand respectively
The power lights of molding block connection, manual indicator light, automatic pilot lamp, molten aluminum heating lamp, atmosphere heating lamp, thermal light, bee
Ring device, key switch, stop button, power on buttons, manual auto-switching push button, molten aluminum atmosphere switching push button.
Further, the hand automatic control module includes DC power supply, the first relay, the second relay, third
Relay, the 4th relay, the 5th relay, wherein pressed with stopping after the normally opened contact of the first relay, power on buttons parallel connection
Button, key switch are composed in series the first branch, the manual contact of manual auto-switching push button, the 5th relay normally-closed contact,
The normally-closed contact of third relay, the second relay coil be composed in series the second branch, manual auto-switching push button it is automatic
Contact, the normally-closed contact of the 5th relay, the normally-closed contact of the second relay, third relay coil be composed in series third branch
Road, the molten aluminum contact of molten aluminum atmosphere switching push button, the normally-closed contact of the 5th relay, the 4th relay coil be composed in series
Four branches, the atmosphere contact of molten aluminum atmosphere switching push button, the normally-closed contact of the 4th relay, the 5th relay normally-closed contact,
Atmosphere heating lamp is composed in series the 5th branch, after the contact switch parallel connection of the contact switch, atmosphere temperature controller of molten aluminum temperature controller with
The coil of 5th relay is composed in series the 6th branch, the coil of the first relay, the second branch, third branch, the 4th branch,
5th branch, the 6th branch form the 7th branch, and the 7th branch is connect after connecting with the first branch with the both ends of DC power supply.
Further, the coils from parallel connection of coils of the power lights and the first relay, the normally opened contact of the second relay refer to manually
Show coils from parallel connection of coils with the first relay after lamp string connection, with first after the normally opened contact of third relay, automatic pilot lamp series connection
The coils from parallel connection of coils of relay, the coils from parallel connection of coils of molten aluminum heating lamp and the 4th relay, thermal light, buzzer, the 5th relay
The coils from parallel connection of coils of device.
Further, the signal output end of the molten aluminum temperature controller passes sequentially through the normally opened contact of the 4th relay, third
The normally opened contact of relay is connect with triac controller, and the signal input part of molten aluminum temperature controller is connect with molten aluminum thermocouple, gas
The signal output end of atmosphere temperature controller passes sequentially through the normally opened contact and thyristor of the normally-closed contact of the 4th relay, third relay
Controller connects, and the signal input part of atmosphere temperature controller is connect with atmosphere thermocouple.
Further, the hand automatic Regulation module includes manual potentiometer and automatic potentiometer, the M of triac controller
End is connected by the resistive element of manual potentiometer and the ends R1 of triac controller, and the ends M of triac controller pass sequentially through hand
The ends R3 of the resistive element of electrokinetic potential device, the resistive element of automatic potentiometer and triac controller connect, the output of manual potentiometer
End is connected by the normally opened contact of the second relay and the ends R2 of triac controller, and the output end of automatic potentiometer passes through second
The normally-closed contact of relay and the ends R2 of triac controller connect.
Further, the heating module include three phase mains, air switch, A.C. contactor, fuse assembly and
The input terminal of heating element on molten aluminum holding furnace, triac controller passes sequentially through fuse assembly, ac contactor
Device, air switch and three phase mains connect, and the output end of triac controller is connect with heating element.
Advantageous effect
Compared with prior art, the present invention have the advantage that for：
1, temperature of aluminum liquid is monitored by molten aluminum temperature controller in real time and controls triac controller and exported or by atmosphere temperature control
Instrument monitors atmosphere temperature and controls triac controller output in real time, can stability contorting molten aluminum heat preservation in-furnace temperature, heat energy utilization
Rate is high, difference variation is small, safe and practical, high efficient and reliable；
2, warning circuit can rapidly cut off control loop with real-time display current working status when molten aluminum overtemperature,
Play protection equipment, it is safe to use；
3, the temperature in molten aluminum holding furnace can be manually controlled or automatically control, easy to operate, reliability is high；
4, triac controller can be adjusted flexibly according to actual condition using manual potentiometer or automatic potentiometer to export
Size, productivity is high, strong applicability；
5, the stability that air switch, A.C. contactor, fuse assembly can effectively improve heating circuit is set, use
Securely and reliably；
6, the indicator light on operation panel can facilitate operation with real-time display current working status.
Description of the drawings
Fig. 1 is the schematic diagram of molten aluminum holding furnace in the present invention；
Fig. 2 is the block diagram of invention；
Fig. 3 is the schematic diagram of operation panel in the present invention；
Fig. 4 is the circuit diagram of heating module in the present invention；
Fig. 5 is the circuit diagram of temperature control modules in the present invention；
Fig. 6 is the circuit diagram of hand automatic Regulation module in the present invention；
Fig. 7 is the circuit diagram of hand automatic control module in the present invention.
Wherein：1- molten aluminums holding furnace, 2- heating modules, 3- temperature control modules, 4- hand automatic Regulations module, 5- hands are automatic
Control module, 6- operation panels, the 7- first branchs, 8- the second branches, 9- thirds branch, the 4th branches of 10-, the 5th branches of 11-,
The 6th branches of 12-, 13- heating elements, 14- crucible furnace bodies, 15- insulating bricks, 16- furnace linings, 17- fire doors, the outlet of 18- molten aluminums, 19-
Stove shoulder, 20- bells, 21- molten aluminum liquids, KP- triac controllers, ST1- molten aluminums thermocouple, ST2- atmosphere thermocouple, PV1- aluminium
Liquid temperature controller, PV2- atmosphere temperature controller, PV1-1- molten aluminum temperature controllers contact switch, PV2-2- atmosphere temperature controllers contact switch,
The manual indicator light of HL1- power lights, HL2-, HL3- automatic pilot lamps, HL4- molten aluminums heating lamp, HL5 atmosphere heating lamp, HL6- are super
Warm indicator light, HA1- buzzers, SB1- key switches, SB2- stop buttons, SB3- power on buttons, SB4 automatically switch to press manually
Button, SB5- molten aluminum atmosphere switching push button, DC- DC power supplies, the first relays of KA0-, the second relays of KA1-, KA2- thirds after
Electric appliance, the 4th relays of KA3-, the 5th relays of KA4-, AC- three phase mains, QS1- air switches, KM1- A.C. contactors,
The automatic potentiometer of BP1- manual potentiometers, BP2-.
Specific implementation mode
The present invention is described further for specific embodiment in below in conjunction with the accompanying drawings.
Refering to fig. 1-7, a kind of control system for reducing the fluctuation of stove inner metal liquid body temperature difference, including molten aluminum holding furnace 1,
Further include triac controller KP, heating module 2, temperature control modules 3, hand automatic Regulation module 4, hand automatic control module 5,
Molten aluminum holding furnace 1, heating module 2, temperature control modules 3, hand automatic Regulation module 4 are connect with triac controller KP, hand
Automatic control module 5 is connect with temperature control modules 3, hand automatic Regulation module 4 respectively, is equipped in molten aluminum holding furnace 1 and temperature
The temperature sensing assembly that control module 3 connects, temperature sensing assembly include the molten aluminum thermocouple ST1 being inserted into molten aluminum, are located at aluminium
Atmosphere thermocouple ST2 above liquid, temperature control modules 3 include the molten aluminum temperature controller PV1 being connect with molten aluminum thermocouple ST1, with
The atmosphere temperature controller PV2 of atmosphere thermocouple ST2 connections, monitors temperature of aluminum liquid by molten aluminum temperature controller PV1 and controls brilliant lock in real time
Tube controller KP outputs monitor atmosphere temperature by atmosphere temperature controller PV2 and control triac controller KP outputs, energy in real time
Temperature, heat utilization rate are high in stability contorting molten aluminum holding furnace 1, difference variation is small, safe and practical, high efficient and reliable.
This control system further includes operation panel 6, and operation panel 6 is equipped with to be connect with hand automatic control module 5 respectively
Power lights HL1, manual indicator light HL2, automatic pilot lamp HL3, molten aluminum heating lamp HL4, atmosphere heating lamp HL5, thermal light
HL6, buzzer HA1, key switch SB1, stop button SB2, power on buttons SB3, manual auto-switching push button SB4, molten aluminum gas
Atmosphere switching push button SB5, each indicator light can facilitate operation with real-time display current working status；Hand automatic control module 5 wraps
Include DC power supply DC, the first relay KA0, the second relay KA1, third relay KA2, the 4th relay KA3, the 5th relay
Device KA4, wherein after the normally opened contact of the first relay KA0, power on buttons SB3 parallel connections with stop button SB2, key switch SB1
It is composed in series the first branch 7, manual contact, the normally-closed contact of the 5th relay KA4, the third of manual auto-switching push button SB4
The normally-closed contact of relay KA2, the second relay KA1 coil be composed in series the second branch 8, manual auto-switching push button SB4
Automated contact, the normally-closed contact of the 5th relay KA4, the normally-closed contact of the second relay KA1, third relay KA2 line
Circle is composed in series third branch 9, the molten aluminum contact of molten aluminum atmosphere switching push button SB5, the normally-closed contact of the 5th relay KA4, the
The coil of four relay KA3 is composed in series the 4th branch 10, the atmosphere contact of molten aluminum atmosphere switching push button SB5, the 4th relay
The normally-closed contact of KA3, the normally-closed contact of the 5th relay KA4, atmosphere heating lamp HL5 are composed in series the 5th branch 11, molten aluminum temperature
Line after the contact switch PV2-2 parallel connections of the contact switch PV1-1, atmosphere temperature controller PV2 of control instrument PV1 with the 5th relay KA4
Circle is composed in series the 6th branch 12, coil, the second branch 8, third branch 9, the 4th branch the 10, the 5th of the first relay KA0
Branch 11, the 6th branch 12 form the 7th branch, the 7th branch connect with the first branch 7 after with the both ends of DC power supply DC company
It connects；The coils from parallel connection of coils of power lights HL1 and the first relay KA0, the normally opened contact of the second relay KA1, manual indicator light HL2 strings
After connection with the coils from parallel connection of coils of the first relay KA0, with the after the normally opened contact of third relay KA2, automatic pilot lamp HL3 series connection
The coils from parallel connection of coils of one relay KA0, the coils from parallel connection of coils of molten aluminum heating lamp HL4 and the 4th relay KA3, thermal light HL6, bee
The coils from parallel connection of coils of ring device HA1, the 5th relay KA4；6th branch 12 is warning circuit, can be with real-time display work at present shape
State can cut off rapidly control loop when molten aluminum overtemperature, play protection equipment, safe to use, can be according to reality
Situation is manually controlled or is automatically controlled the temperature in molten aluminum holding furnace 1, easy to operate, and reliability is high.
The signal output end of molten aluminum temperature controller PV1 passes sequentially through the normally opened contact of the 4th relay KA3, third relay
The normally opened contact of KA2 is connect with triac controller KP, specifically：The ends OUT+ of molten aluminum temperature controller PV1 pass sequentially through the 4th after
Normally opened contact, the normally opened contact of third relay KA2 of electric appliance KA3 is connect with the ends C1 of triac controller KP, molten aluminum temperature control
The ends OUT- of instrument PV1 pass sequentially through the normally opened contact and thyristor of the normally opened contact of the 4th relay KA3, third relay KA2
The ends C2 of controller KP connect, and the signal input part of molten aluminum temperature controller PV1 is connect with molten aluminum thermocouple ST1；Atmosphere temperature controller PV2
Signal output end pass sequentially through the normally-closed contact of the 4th relay KA3, the normally opened contact of third relay KA2 and thyristor control
Device KP connections processed, specifically：The ends OUT+ of atmosphere temperature controller PV2 pass sequentially through the normally-closed contact of the 4th relay KA3, third after
The normally opened contact of electric appliance KA2 is connect with the ends C1 of triac controller KP, and the ends OUT- of atmosphere temperature controller PV2 pass sequentially through the 4th
Normally-closed contact, the normally opened contact of third relay KA2 of relay KA3 is connect with the ends C2 of triac controller KP, atmosphere temperature
The signal input part of control instrument PV2 is connect with atmosphere thermocouple ST2；In actual use, it is gentle that molten aluminum temperature controller PV1 is set first
The process warm angle value of atmosphere temperature controller PV2 panels, molten aluminum thermocouple ST1 detect temperature of aluminum liquid and feed back to molten aluminum temperature controller in real time
PV1, atmosphere thermocouple ST2 detect atmosphere temperature and feed back to atmosphere temperature controller PV2, molten aluminum temperature controller PV1 and atmosphere temperature in real time
Instrument PV2 is controlled according to actual temperature value and process warm angle value output control voltage, triac controller KP inputs electricity according to the end C1, C2
Pressure value size automatically shuts down or connects output end to control the temperature in molten aluminum holding furnace 1.
Hand automatic Regulation module 4 includes manual potentiometer BP1 and automatic potentiometer BP2, manual potentiometer BP1 can be from behaviour
Make to adjust on panel 6, the ends M of triac controller KP are by the resistive element of manual potentiometer BP1 with triac controller KP's
The ends R1 connect, and the ends M of triac controller KP pass sequentially through the resistance of the resistive element of manual potentiometer BP1, automatic potentiometer BP2
Body is connect with the ends R3 of triac controller KP, the normally opened contact that the output end of manual potentiometer BP1 passes through the second relay KA1
Connect with the ends R2 of triac controller KP, the output end of automatic potentiometer BP2 by the normally-closed contact of the second relay KA1 with
The ends R2 of triac controller KP connect；When selecting manual mode, can be adjusted by adjusting the resistance value of manual potentiometer BP1
Whole triac controller KP output sizes；It, can be by being pre-adjusted the resistance of automatic potentiometer BP2 when selecting automatic mode
Value, can equally adjust triac controller KP output sizes, can root using manual potentiometer BP1 or automatic potentiometers BP2
The size of triac controller KP outputs, productivity height, strong applicability are adjusted flexibly according to actual condition.
Heating module 2 includes three phase mains AC, air switch QS1, A.C. contactor KM1, fuse assembly and installation
The input terminal of heating element 13 on molten aluminum holding furnace 1, triac controller KP passes sequentially through fuse assembly, ac contactor
Device KM1, air switch QS1 are connect with three phase mains AC, can effectively improve the stability of heating circuit, safe and reliable,
The output end of triac controller KP is connect with heating element 13, heat-generating pipe R1, heat-generating pipe R2, the heat-generating pipe R3 of heating element 13
Power grid three-phase equilibrium, the temperature control side of molten aluminum temperature controller PV1 and atmosphere temperature controller PV2 are ensured with good electrical property using wye connection
Formula uses automatically controlled PID+SSD, can be temperature automatically controlled, and the power stepless of triac controller KP is adjustable, can extend heating element 13
Service life, preferably, molten aluminum temperature controller PV1 and atmosphere temperature controller PV2 is using Japan's SR Series Controllers.
In the present embodiment, molten aluminum holding furnace 1 includes crucible furnace body 14 and bell 20, and crucible furnace body 14 uses vesuvianite
Black crucible, in rounded shape, 14 bottom of crucible furnace body is supported using insulating brick 15, and 14 periphery of crucible furnace body is equipped with furnace lining 16, furnace lining
16 material of manufacturing uses ceramic beaverboard+light weeight alumina brick+fibrous carbon, and 17 edge of fire door of crucible furnace body 14 goes out equipped with molten aluminum
Mouth 18,18 top of molten aluminum outlet are equipped with stove shoulder 19, and stove shoulder 19 is sealed with heat insulation mud, and heating element 13 uses OCr21Al6Nb resistance
Band is mounted between crucible furnace body 14 and furnace lining 16, is heated evenly, and molten aluminum thermocouple ST1 and atmosphere thermocouple ST2 are from bell 20
Outside is inserted into crucible furnace body 14, wherein molten aluminum thermocouple ST1 is inserted into stove in molten aluminum liquid 21, and atmosphere thermocouple ST2 is not
Molten aluminum liquid 21 can be touched；Bell 20 is used for being covered with fire door 17, prevents molten aluminum spluttering, can open or close, but cannot be pressed onto
Crucible furnace body 14.
What has been described above is only a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art,
Without departing from the structure of the invention, several modifications and improvements can also be made, these all do not interfere with implementation of the present invention
Effect and patent practicability.
Claims (8)
1. a kind of control system for reducing the fluctuation of stove inner metal liquid body temperature difference, including molten aluminum holding furnace (1), feature exists
In：Further include triac controller (KP), heating module (2), temperature control modules (3), hand automatic Regulation module (4), hand from
Dynamic control module (5), the molten aluminum holding furnace (1), heating module (2), temperature control modules (3), hand automatic Regulation module (4)
Connect with the triac controller (KP), the hand automatic control module (5) respectively with temperature control modules (3), hand from
Dynamic voltage regulating module (4) connection, the molten aluminum holding furnace (1) is interior to be equipped with the temperature detection being connect with the temperature control modules (3)
Component.
2. the control system according to claim 1 for reducing the fluctuation of stove inner metal liquid body temperature difference, it is characterised in that：Institute
State temperature sensing assembly include be inserted into molten aluminum in molten aluminum thermocouple (ST1), the atmosphere thermocouple (ST2) above molten aluminum,
The temperature control modules (3) include the molten aluminum temperature controller (PV1) being connect with molten aluminum thermocouple (ST1) and atmosphere thermocouple
(ST2) the atmosphere temperature controller (PV2) connected.
3. the control system according to claim 1 or 2 for reducing the fluctuation of stove inner metal liquid body temperature difference, feature exists
In：The control system further includes operation panel (6), the operation panel (6) be equipped with respectively with hand automatic control module (5)
Power lights (HL1), manual indicator light (HL2), automatic pilot lamp (HL3), molten aluminum heating lamp (HL4), the atmosphere heating lamp of connection
(HL5), thermal light (HL6), buzzer (HA1), key switch (SB1), stop button (SB2), power on buttons (SB3),
Manual auto-switching push button (SB4), molten aluminum atmosphere switching push button (SB5).
4. the control system according to claim 3 for reducing the fluctuation of stove inner metal liquid body temperature difference, it is characterised in that：Institute
The hand automatic control module (5) stated include DC power supply (DC), the first relay (KA0), the second relay (KA1), third after
Electric appliance (KA2), the 4th relay (KA3), the 5th relay (KA4), wherein the normally opened contact of the first relay (KA0) powers on
It is composed in series the first branch (7) with stop button (SB2), key switch (SB1) after button (SB3) is in parallel, is automatically switched manually
The manual contact of button (SB4), the normally-closed contact of the 5th relay (KA4), the normally-closed contact of third relay (KA2), second
The coil of relay (KA1) is composed in series the second branch (8), the automated contact of manual auto-switching push button (SB4), the 5th relay
The normally-closed contact of device (KA4), the normally-closed contact of the second relay (KA1), third relay (KA2) coil be composed in series third
Branch (9), the molten aluminum contact of molten aluminum atmosphere switching push button (SB5), the 5th relay (KA4) normally-closed contact, the 4th relay
(KA3) coil is composed in series the 4th branch (10), the atmosphere contact of molten aluminum atmosphere switching push button (SB5), the 4th relay
(KA3) normally-closed contact, the atmosphere heating lamp (HL5) of normally-closed contact, the 5th relay (KA4) are composed in series the 5th branch
(11), after contact switch (PV2-2) parallel connection of the contact switch (PV1-1) of molten aluminum temperature controller (PV1), atmosphere temperature controller (PV2)
It is composed in series the 6th branch (12), the coil of the first relay (KA0), the second branch with the coil of the 5th relay (KA4)
(8), third branch (9), the 4th branch (10), the 5th branch (11), the 6th branch (12) form the 7th branch, the 7th branch with
It is connect with the both ends of DC power supply (DC) after the first branch (7) series connection.
5. the control system according to claim 4 for reducing the fluctuation of stove inner metal liquid body temperature difference, it is characterised in that：Institute
State the coils from parallel connection of coils of power lights (HL1) and the first relay (KA0), normally opened contact, the manual indicator light of the second relay (KA1)
(HL2) coils from parallel connection of coils after connecting with the first relay (KA0), normally opened contact, the automatic pilot lamp of third relay (KA2)
(HL3) coils from parallel connection of coils after connecting with the first relay (KA0), the coil of molten aluminum heating lamp (HL4) and the 4th relay (KA3)
Parallel connection, thermal light (HL6), buzzer (HA1), the 5th relay (KA4) coils from parallel connection of coils.
6. the control system according to claim 4 for reducing the fluctuation of stove inner metal liquid body temperature difference, it is characterised in that：Institute
The signal output end for stating molten aluminum temperature controller (PV1) passes sequentially through normally opened contact, the third relay of the 4th relay (KA3)
(KA2) normally opened contact is connect with triac controller (KP), signal input part and the molten aluminum thermocouple of molten aluminum temperature controller (PV1)
(ST1) connect, the signal output end of atmosphere temperature controller (PV2) pass sequentially through the normally-closed contact of the 4th relay (KA3), third after
The normally opened contact of electric appliance (KA2) is connect with triac controller (KP), signal input part and the atmosphere heat of atmosphere temperature controller (PV2)
Galvanic couple (ST2) connects.
7. the control system according to claim 4 for reducing the fluctuation of stove inner metal liquid body temperature difference, it is characterised in that：Institute
It includes manual potentiometer (BP1) and automatic potentiometer (BP2), the ends M of triac controller (KP) to state hand automatic Regulation module (4)
It is connect with the ends R1 of triac controller (KP) by the resistive element of manual potentiometer (BP1), the ends M of triac controller (KP)
Pass sequentially through the R3 of the resistive element of manual potentiometer (BP1), the resistive element and triac controller (KP) of automatic potentiometer (BP2)
The output end of end connection, manual potentiometer (BP1) passes through the normally opened contact and triac controller (KP) of the second relay (KA1)
The connection of the ends R2, the normally-closed contact and triac controller that the output end of automatic potentiometer (BP2) passes through the second relay (KA1)
(KP) the ends R2 connection.
8. the control system according to claim 1 for reducing the fluctuation of stove inner metal liquid body temperature difference, it is characterised in that：Institute
It includes three phase mains (AC), air switch (QS1), A.C. contactor (KM1), fuse assembly and peace to state heating module (2)
Heating element (13) on molten aluminum holding furnace (1), the input terminal of triac controller (KP) pass sequentially through fuse assembly,
A.C. contactor (KM1), air switch (QS1) are connect with three phase mains (AC), the output end of triac controller (KP) with plus
Thermal element (13) connects.
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| CN201810548506.4A CN108662899B (en) | 2018-05-31 | 2018-05-31 | Control system for reducing fluctuation of temperature difference of metal liquid in furnace |
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| CN201810548506.4A CN108662899B (en) | 2018-05-31 | 2018-05-31 | Control system for reducing fluctuation of temperature difference of metal liquid in furnace |
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| CN108662899B (en) | 2023-10-27 |
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