CN108919739A - industrial furnace control system - Google Patents
industrial furnace control system Download PDFInfo
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- CN108919739A CN108919739A CN201810828019.3A CN201810828019A CN108919739A CN 108919739 A CN108919739 A CN 108919739A CN 201810828019 A CN201810828019 A CN 201810828019A CN 108919739 A CN108919739 A CN 108919739A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/16—Plc to applications
- G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
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- Automation & Control Theory (AREA)
- Control Of Conveyors (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of industrial furnace control systems, are related to industrial furnace, it is intended to it solves, existing industrial furnace control system is too simple, and cause user that can not effectively manage it various situations of reply, and problem inconvenient for use, its key points of the technical solution are that：Including numerical control device and temperature control device, the numerical control device includes PLC controller and human-computer interaction interface, the temperature control device includes temperature sensor and heating element, the PLC controller stores a variety of heating process, the PLC controller controls heating element heats according to heating process and temperature detection value, and the PLC controller is also connected with startup self-detection device, manipulation apparatus for deivation and vulnerable part monitoring device.Industrial furnace control system of the invention can carry out production management to equipment more comprehensively, efficiently；The skill requirement that can reduce equipment operator facilitates staff to manipulate industrial furnace, copes with the situation that will appear in all kinds of production processes, use is more convenient.
Description
Technical field
The present invention relates to industrial furnaces, more specifically, it relates to a kind of industrial furnace control system.
Background technique
Industrial furnace has glowing furnace, annealing furnace, soldering oven etc., is relatively large-scale and complicated equipment, mainly to process
All kinds of metal parts.Industrial furnace is equipped with intelligence control system substantially, works so that staff controls equipment.
Existing industrial furnace control system, big multi-functional simple, staff mostly can only be to work using control system
Industry electric furnace carries out basic manipulation, and control equipment completes processing work；And in actual use, what industrial furnace needed to face
There are many problem, this is difficult staff conveniently, efficiently to operation industrial furnace.
Such as：When a new industrial furnace, or maintenance have replaced the industrial furnace first of the components such as new flue
It is secondary in use, its heat up（Technological temperature is increased to from room temperature）Mode just have it is considered, if staff is directly according to work
The heating of skill Temperature-controlled appliance, then each vulnerable part in new furnace will be because of reasons such as thermal expansion coefficients and by biggish damage
Consumption.
Industrial furnace work is controlled in order to facilitate staff, so herein proposing a kind of new scheme.
Summary of the invention
It, can be in view of the deficiencies of the prior art, the present invention intends to provide a kind of industrial furnace control system
More comprehensively, production management efficiently is carried out to equipment；The skill requirement that can reduce equipment operator, facilitates staff
Industrial furnace is manipulated, copes with the situation that will appear in all kinds of production processes, use is more convenient.
Above-mentioned technical purpose of the invention technical scheme is that：A kind of industrial furnace control system
System, including numerical control device, transmission control device and temperature control device, the transmission control device and temperature control device are separately connected
In numerical control device, the numerical control device includes PLC controller and human-computer interaction interface, and the temperature control device includes that electric signal connects
It is connected to the temperature sensor and multiple heating elements for heating to industrial furnace of PLC controller, the temperature sensor inspection
Simultaneously output temperature detected value is pre-seted and is stored a variety of to PLC controller, the PLC controller flue temperature of survey industrial furnace
Heating process, a variety of heating process include that new furnace enables heating process, the technique that is rapidly heated, slope heating process and staged
Heating process, the PLC controller control heating element heats, the PLC controller according to heating process and temperature detection value
It is also connected with startup self-detection device, manipulation apparatus for deivation and vulnerable part monitoring device.
By using above-mentioned technical proposal, in use, user can be according to the actual conditions and reality of industrial furnace
Demand calls the suitable ramp technique in PLC controller；The present invention also has startup self-detection, manipulation induction and vulnerable part simultaneously
The function of monitoring, so that user can carry out production management to equipment more comprehensively, efficiently by invention；It can reduce and set
The skill requirement of standby operator, facilitates staff to manipulate industrial furnace, copes with the situation that will appear in all kinds of production processes,
Using more convenient.
The present invention is further arranged to：The transmission control device includes the driving electricity for driving industrial furnace conveyer belt
Machine and velocity measuring part for detecting conveying tape speed, velocity measuring part detection and output speed detected value, it is described
PLC controller electric signal is connected to driving motor and velocity measuring part.
By using above-mentioned technical proposal, the present invention passes through the conveying belt speed of velocity measuring part real-time monitoring industrial furnace
Degree, and driving motor is controlled using PLC controller according to the actual situation, it realizes to conveyer belt fine speed adjustment；Why in this way
Setting is because in actual use, driving wheel, driven wheel and transmission belt of conveyer belt itself have abrasion, conveyer belt
Actual speed and driving motor revolving speed between there is certain non-proportional relation, there is a certain amount of error amount, if according to city
It is common on face that speed is only set when producing and starting, and the later period does not feed back fine tuning operation, then wears in driving wheel etc.
Control precision is influenced afterwards, and influences work pieces process effect.
The present invention is further arranged to：The numerical control device is connected with suggestion device, and the suggestion device includes multiple electricity
Signal is connected to the combined aural and visual alarm of PLC controller.
By using above-mentioned technical proposal, when all data that the present invention can be set to industrial furnace occurs abnormal, PLC
Controller is corresponding to open combined aural and visual alarm alarm, to prompt staff to make feedback in time, to further facilitate work people
Member is managed industrial furnace.
The present invention is further arranged to：The PLC controller data connection has several computers, and the computer data connects
Connect cloud server.
By using above-mentioned technical proposal, staff can contact computer and cloud server and carry out far to the present invention
Process control.
The present invention is further arranged to：The startup self-detection device includes power supply testing agency, the inspection of heating member circuit
Survey mechanism, protection gas testing agency, coolant liquid testing agency, flue testing agency and coolant jacket testing agency.
By using above-mentioned technical proposal, startup self-detection device of the invention can power supply to industrial furnace plus
Thermal element circuit, protection gas, coolant liquid, flue and coolant jacket carry out self-test, to guarantee that equipment being capable of trouble-free operation.
The present invention is further arranged to：The manipulation apparatus for deivation includes conveyer belt operation induction detection components, coolant liquid
Operation induction detection components, flue emptying igniting operation induction detection components, technological temperature setting induction detection components and into
Material operation induction feedback component.
It can be obtained by using above-mentioned technical proposal when staff's operation is equipped with industrial furnace of the invention
The all data of industrial furnace is fed back, to be guided to complete control work according to feedback information, so as to reduce staff
Skill requirement, facilitate staff to use.
The present invention is further arranged to：The vulnerable part monitoring device includes the timing that electric signal is connected to PLC controller
Device, when the temperature detection value of temperature sensor output exceeds preset start trigger temperature value, the PLC controller control
When timer, and the clocking value of record storage timer.
By using above-mentioned technical proposal, the present invention can hot operation to industrial furnace statistical monitoring industrial furnace it is total
Duration, so as to follow-up work personnel make in the service life to industrial furnace vulnerable part it is more accurate estimate, it is carried out more in time
It changes, while staff also being facilitated to make improvement to technique and equipment according to the loss rule of vulnerable part.
The present invention is further arranged to：The PLC controller is also connected with igniting monitoring device, the igniting monitoring device packet
Igniter and flame detector, the PLC controller control igniter opening and closing are included, the flame detector detects industrial electro fire grate
Whether protection gas out is ignited.
By using above-mentioned technical proposal, whether staff there is fired state to monitoring industrial furnace, avoids industry
The protection gas of electric furnace discharge is directly discharged into atmosphere pollution environment with discarded.
In conclusion the invention has the advantages that：
1, numerical control device includes PLC controller, and PLC controller connects heating element and temperature sensor, so that user can be with
The temperature of industrial furnace is monitored in real time, and carries out real-time control；A variety of heating process are preset in PLC controller simultaneously,
To cope with industrial furnace using when the various problems that can face, so that facilitating staff to control industrial furnace copes with various works
Condition；
2, numerical control device connection startup self-detection device, manipulation apparatus for deivation and vulnerable part monitoring device, so that the present invention is switched on
After can self-test guarantee equipment operate normally；Manipulation induction again in operation reduces and manipulates wrong probability, reduces operation skill
It can require；The vulnerable part of industrial furnace can also be monitored simultaneously, in time to its maintenance of equipment；
In summary：The present invention can carry out production management to equipment more comprehensively, efficiently；It can reduce equipment operator
Skill requirement, facilitate staff manipulate industrial furnace, cope with the situation that will appear in all kinds of production processes, use is more square
Just.
Detailed description of the invention
Fig. 1 is system block diagram one of the invention, mainly to show overall structure；
Fig. 2 is the attachment structure schematic diagram of transmission control device and PLC controller of the invention；
Fig. 3 is the attachment structure schematic diagram of temperature control device and PLC controller of the invention；
Fig. 4 is the attachment structure schematic diagram of startup self-detection device and numerical control device of the invention；
Fig. 5 is the further detailed annotation system block diagram of Fig. 4；
Fig. 6 is the attachment structure schematic diagram of manipulation apparatus for deivation and numerical control device of the invention；
Fig. 7 is the further detailed annotation system block diagram of Fig. 6；
Fig. 8 is the attachment structure schematic diagram of vulnerable part monitoring device and numerical control device of the invention；
Fig. 9 is the attachment structure schematic diagram of igniting monitoring device and numerical control device of the invention.
In figure：1, numerical control device；11, PLC controller；12, human-computer interaction interface；13, computer；2, transmission control dress
It sets；21, driving motor；22, velocity measuring part；3, temperature control device；31, temperature sensor；32, heating element；4, startup self-detection
Device；41, power supply testing agency；411, voltage sensor；42, heating member circuit testing agency；421, the first electric current passes
Sensor；422, the second current sensor；43, gas testing agency is protected；431, the first baroceptor；432, dew point hygrometer；433,
Gas flowmeter；44, coolant liquid testing agency；441, the first liquid-pressure pick-up；442, the first liquid flow sensor；
45, flue testing agency；451, gas detecting instrument；46, coolant jacket testing agency；461, second liquid pressure sensor；462,
Second liquid flow sensor；5, apparatus for deivation is manipulated；51, conveyer belt operation induction detection components；52, coolant liquid operation induction
Detection components；521, frequency converter；53, flue emptying igniting operation induction detection components；54, technological temperature setting induction detection group
Part；55, charging operation induction feedback component；6, vulnerable part monitoring device；61, timer；62, counter；63, second voltage passes
Sensor；64, third current sensor；7, suggestion device；71, combined aural and visual alarm；8, igniting monitoring device；81, igniter；82,
Flame detector.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Industrial furnace control system, referring to Fig.1, including the numerical control device 1 with data processing and control ability, numerical control dress
Setting 1 includes PLC controller 11 and human-computer interaction interface 12-HMI, and human-computer interaction interface 12 selects touch display screen, to facilitate work
Make personnel's operation.
For convenience of online between industrial furnaces different in workshop, while staff being facilitated remotely to control industrial furnace
System, 11 data connection of PLC controller have several computers 13, and computer 13 is networked to cloud server, which is
Industrial furnace manufacturer buys together when purchasing PLC and touch display screen, and computer 13 and cloud server realize data interaction,
To realize remote control function.
Referring to Figures 1 and 2, numerical control device 1 is connected with transmission control device 2, and transmission control device 2 includes for driving work
The driving motor 21 of industry electric furnace conveyer belt, driving motor 21 selects stepper motor, and is equipped with suitable speed reducer and frequency converter one
With using, to control it, and it guarantees that the speed of conveyer belt is relatively suitable.Driving motor 21 selects stepper motor etc. can be just
The motor of reversion, electric signal（The practical control frequency converter to be equipped with）It is connected to PLC controller 11, according to PLC controller
The control signal of 11 outputs adjusts the speed the conveyer belt of industrial furnace.
Transmission control device 2 further includes velocity measuring part 22, and velocity measuring part 22 may be selected Shanghai and be speeded the limited public affairs of industry
The DH-SA speed monitoring instrument of department, or the rotary encoder of installation detection angular displacement, rotary encoder is for detecting conveyer belt driving
The angular displacement of the output shaft of motor, and in the speed for being subsequently converted to conveyer belt.Preferential detection speed monitoring instrument detects conveyer belt
Speed.
Because in actual use, the driving wheel of conveyer belt, driven wheel and transmission belt itself have abrasion, conveyer belt
Actual speed and driving motor 21 revolving speed between there is certain non-proportional relation, there is a certain amount of error amount.
Passing industrial furnace directly sets motor speed control amount in production mostly surely, later stage work personnel without
Method learns the actual speed of conveyer belt, and no longer does other operations, and this mode will affect control essence after the abrasion such as driving wheel
Degree；And the speed of the present invention conveyer belt of preferential velocity's monitor detection herein.22 data connection of velocity measuring part is in PLC controller
11, for detecting simultaneously output speed detected value, to PLC controller 11, PLC controller 11 handles transition detection value, and controls man-machine
Interactive interface is shown, so that staff makes fine tuning to driving motor 21 according to speed detection value, so as to conveyer belt conveying
Speed is more accurately controlled.Simultaneously can also to industrial furnace conveying tape handler setting, the active of conveyer belt
Wheel and driven wheel are disposed as active form, i.e. driven wheel is auxiliary wheel at this time, further to adjust to the transmission of conveyer belt
Section.
Referring to Figure 1 and Figure 3, numerical control device 1 is connected with temperature control device 3, and temperature control device 3 includes multiple temperature sensors 31,
Temperature sensor 31 is mounted on the body of industrial furnace, and the non-contact temperature sensors such as infrared temperature sensor can be used,
Its test side or is directly installed near furnace outer wall towards the outer wall of flue, for detecting the temperature of flue, and output temperature
Detected value.
Since the most volume of industrial furnace is larger, 31 quantity of temperature sensor of setting is relatively more, so current does
Method is to divide multiple temperature sensors 31 for multiple groups, and the burner hearth length direction along industrial furnace is uniformly arranged, outside the flue being located at.
Temperature control device 3 further includes heating element 32, and heating element 32 selects heating wire, is similarly installed in burner hearth, point
It is distributed in outside flue, for heating flue.
Temperature sensor 31 and heating element 32（Its controller）Equal electric signal is connected to PLC controller 11, temperature sensing
31 output temperature detected value of device（Transmission process is converted through digital-to-analogue to agree with PLC）To PLC controller 11, PLC controller 11 is controlled
12 displays temperature detected value of human-computer interaction interface, so that staff utilizes 11 pairs of PLC controller of heating element according to demand
32 controls, the industrial furnace temperature control realized pair.
Due in actual use, the case where industrial furnace, is different, and the actual demand of user is different, so industrial electro
The heating process of furnace is equally different.For convenience of staff's use, in PLC controller 11（Internal storage unit）It is pre-stored with
A variety of heating process, a variety of heating process include that new furnace enables heating process, the technique that is rapidly heated, slope heating process and rank
Ladder type heating process.
It is in order to enable new industrial furnace or the industrial furnace for having replaced flue etc. can be more preferable that new furnace, which enables heating process,
Adaptation work requirements, avoid its according to conventional heating process heating after, the factors such as thermal expansion coefficients are much influence and by
Excessive loss.New furnace enables heating process：It is first warming up to certain value, then constant temperature certain time, then temperature falls after rise certain
Amount is warming up to new temperature value again again later, and aforesaid operations are repeated several times, so that industrial furnace faster adapts to operating condition, until
Stopping when reaching processing technology temperature.New furnace enables heating process, and generally only when new furnace first enables, operation is primary, subsequent to be
Other heating process may be selected.
The technique that is rapidly heated is exactly the power that most heats up fastly for enabling industrial furnace as its name suggests.
Oblique wave heating process：Temperature and time is proportional, and proportionality coefficient is set according to user's actual demand；Such as tomorrow
Use in the morning, then can be set as opening tonight and gradually heat up, wait until that tomorrow morning just reaches process warm；It can be mentioned
High working efficiency, and it is less to the loss of industrial furnace.
Staged heating process：It is first warming up to certain value, then constant temperature for a period of time, then heats up again, keeps again
Constant temperature is until being increased to technological temperature.
Above a variety of heating process are stored in PLC controller 11, and waiting is called by user.
When use：Staff according to the actual situation, operates 11 Selection and call of PLC controller in human-computer interaction interface 12 and closes
Suitable heating process, and manipulate PLC controller 11 according to heating process, i.e., heating element 32 is controlled using PLC controller 11 add
Heat；After the temperature value shown on human-computer interaction interface 12 reaches technological temperature, staff is controlled defeated using PLC controller 11
It send the driving motor 21 of band to open, and its speed is adjusted, it is subsequent to be carried out by conveyer belt conveying workpieces
Processing.
Referring to Fig.1 and Fig. 4, numerical control device 1 are connected with startup self-detection device 4, and startup self-detection device 4 is examined including power supply
Survey mechanism 41, heating member circuit testing agency 42, protection gas testing agency 43, coolant liquid testing agency 44, flue testing agency
45 and coolant jacket testing agency 46.
Referring to Fig. 5, power supply testing agency 41 is used for power supply（Three-phase electricity）It is detected comprising Ruo Gan electricity
Pressure sensor 411, several voltage sensors 411 are electrically connected the three-phase in three-phase electricity, are carried out with the three-phase respectively to power supply
Detection sampling, and output voltage detected value.
411 data connection of voltage sensor（It is in parallel）In PLC controller 11, output voltage detected value to PLC controller 11.
Referring to Fig. 5, heating member circuit testing agency 42 includes to the power supply main circuit of heating element 32 and controlling back respectively
The first current sensor 421, the second current sensor 422 of road detection on-off.First current sensor 421 and the second electric current pass
422 data connection of sensor is in PLC controller 11, output detection value to PLC controller 11.
First current sensor 421 is electrically connected to（Series connection）Heating element 32（It is shown in Fig. 3）Power supply main circuit, be used for
The electric current of detection power supply main circuit simultaneously exports the first current detection value；Second current sensor 422 is electrically connected to heating element 32
Control major loop.
Referring to Fig. 5, protection gas testing agency 43 is respectively used to air pressure, purity and the stream of the protection gas of detection industrial furnace
Amount, is set between air source generator and industrial furnace.Protecting gas testing agency 43 includes the first baroceptor 431, dew
Point instrument 432 and gas flowmeter 433.
First baroceptor 431, test side probe into the appendix between air source generator and industrial furnace, are used for
It detects the air pressure in appendix and exports the first air pressure detected value.
Dew point hygrometer 432, test side probe into the appendix between air source generator and industrial furnace, are used to detect and defeated
Exposure point value, for determining the purity of protection gas subsequently through dew point.Why can be carried out purity judgement is because of protection gas
Main component is hydrogen and nitrogen, and a small amount of mixed aqueous vapor；By dew point it is known that the water content of protection gas, dew point are got over
Low to show to protect the water content of gas fewer, i.e. the purity of protection gas is higher.Dew point hygrometer 432 is arranged can be to avoid the water in protection gas
Divide the workpiece quality for excessively influencing to process.
The connection of gas flowmeter 433 is on the appendix between air source generator and industrial furnace, for detecting and exporting
Detection of gas flow rate value.
First baroceptor 431, dew point hygrometer 432 and gas flowmeter 433 distinguish data connection in PLC controller
11, the first air pressure detected value, dew point value and detection of gas flow rate value export processing in PLC controller 11 respectively.
Referring to Fig. 5, coolant liquid testing agency 44 is used to detect the pressure and flow of coolant liquid in coolant liquid delivery pipe, packet
Include the first liquid-pressure pick-up 441 and the first liquid flow sensor 442.First liquid-pressure pick-up 441 and the first liquid
Body flow sensor 442 distinguishes data connection in PLC controller 11, and output detection value is to PLC controller 11.
First liquid-pressure pick-up 441 is installed on coolant liquid delivery pipe, and its test side probes into coolant liquid delivery pipe,
For detecting and exporting the first fluid pressure detected value.
First liquid flow sensor 442 equally installation coolant liquid delivery pipe, and its test side probes into coolant liquid delivery pipe
It is interior, for detecting and exporting the first fluid flow detected value.
Referring to Fig. 5, flue testing agency 45（It is shown in Fig. 4）Including several gas inspections whether leaked for detecting flue
Instrument 451 is surveyed, for detecting simultaneously output gas detected value；Flammable Gas Detector may be selected in gas detecting instrument 451, because of protection
The main component of gas is hydrogen and nitrogen, the content of hydrogen is detected when actually detected, generally to judge whether flue leaks.Due to
The relatively small floating of hydrogen density, the test side of gas detecting instrument 451 are provided towards above flue.By taking soldering oven as an example, gas
The test side of body detector 451 carries out inspection to tunnel-shaped flue overhead gas, to differentiate whether flue leaks.
Referring to Fig. 5, coolant jacket testing agency 46 is used to detect whether coolant jacket leaks, including second liquid pressure sensor
461 and second liquid flow sensor 462.
Second liquid pressure sensor 461, test side probes into coolant jacket, for detecting the pressure of coolant liquid in coolant jacket
Power, and second liquid pressure detection value is exported, to determine coolant jacket with the presence or absence of leakage subsequently through pressure change.
Second liquid flow sensor 462 is at least arranged two, the test side point of two second liquid flow sensors 462
The liquid feeding end and outlet end of coolant jacket are not probeed into；Or one second liquid flow sensor 462 of setting, but at least telecommunications
Two test sides are connected, two test sides probe into the liquid feeding end and outlet end of coolant jacket respectively.Second liquid flow sensor 462
It detects and simultaneously exports feed liquor flow detection value and liquid stream detection values out respectively, so as to subsequent according to feed liquor flow detection value and liquid out
The difference of flow detection value determines whether coolant jacket leaks.
Referring to Fig.1 and Fig. 5, numerical control device 1 are connected with suggestion device 7, and suggestion device 7 includes that electric signal is connected to PLC control
The combined aural and visual alarm 71 of device 11 processed（If combined aural and visual alarm 71 is without from tape controller, series relay, PLC controls relay）.
Combined aural and visual alarm 71 be it is multiple, each mechanism of industrial furnace is respectively corresponded, in all data exception of industrial furnace
Prompt staff.Suggestion device 7 further includes the alarm module being set in PLC controller 11 with program form, alarm module
Defeated control human-computer interaction interface 12 shows a variety of predetermined warning information respectively.
When use：When industrial furnace booting, start-up phase carries out self-test to industrial furnace, and startup self-detection device 4 is touched
Hair, and run at least once.
A, power supply testing agency 41 runs：When the output of voltage sensor 411 is to the voltage detecting value of PLC controller 11
It is 0, PLC controller 11 determines that industrial furnace powers on for phase shortage, and PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time
It opens, and pops up the message box that phase shortage powers in human-computer interaction interface 12；
When the output of voltage sensor 411 exceeds normalization voltage range value, PLC controller to the voltage detecting value of PLC controller 11
11 determine abnormal electrical power supply, and PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time, and in 12 bullet of human-computer interaction interface
The message box of abnormal electrical power supply out.
B, heating member circuit testing agency 42 runs：When the first current sensor 421 is exported to the first of PLC controller 11
When current detection value is equal to 0, then PLC controller 11 determines the power supply main circuit open circuit of heating member, and PLC controller 11 controls at this time
Corresponding combined aural and visual alarm 71 is opened, and pops up the power supply main circuit open circuit message box of heating member in human-computer interaction interface 12；
When the output of the second current sensor 422 is equal to 0 to the second current detection value of PLC controller 11, then PLC controller 11 is sentenced
Determine the control major loop open circuit of heating member, PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time, and in man-machine friendship
Pop up the control major loop open circuit message box of heating member in mutual interface 12.
C, protection gas testing agency 43 runs：
When the output of the first baroceptor 431 is above standard air pressure range value to the first air pressure detected value of PLC controller 11,
PLC controller 11 determines the pressure abnormity of protection gas, and PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time, and
The message box of protection gas pressure abnormity is popped up in human-computer interaction interface 12.
When the output of dew point hygrometer 432 is above standard dew point value to the dew point value of PLC controller 11, PLC controller 11 is sentenced
Surely protection gas purity is insufficient, and PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time, and in human-computer interaction interface 12
The pop-up protection insufficient message box of gas purity.
When the output of gas flowmeter 433 is above standard gas flow range to the detection of gas flow rate value of PLC controller 11
Value, PLC controller 11 determine that protection air-flow amount is insufficient, and if detection of gas flow rate value be greater than critical field value, PLC controller 11
Further determine for protection air-flow amount it is excessive；If detection of gas flow rate value is less than critical field value, PLC controller 11 is further sentenced
It is too small to be set to protection air-flow amount.Subsequent, PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens, and respectively in man-machine friendship
The mutual pop-up of interface 12 message box that protection air-flow amount is much or protection air-flow amount is too small.
D, coolant liquid testing agency 44 runs：
When the output of the first liquid-pressure pick-up 441 is greater than normal fluid to the first fluid pressure detected value of PLC controller 11
Pressure limit value, PLC controller 11 determine that coolant pressure is excessive；When the first fluid pressure detected value is less than normal fluid pressure
Value range, PLC controller 11 determine that coolant pressure is too small, and PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time
It opens, and respectively in the pop-up of human-computer interaction interface 12 message box that coolant pressure is excessive, coolant pressure is too small.
When the output of the first liquid flow sensor 442 is greater than standard to the first fluid flow detected value of PLC controller 11
Fluid flow value range, PLC controller 11 determine that coolant rate is excessive；When the first fluid flow detected value is less than normal fluid
Range of flow value, PLC controller 11 determine that coolant rate is too small, and PLC controller 11 controls corresponding combined aural and visual alarm at this time
71 open, and respectively in the pop-up of human-computer interaction interface 12 message box that coolant rate is excessive, coolant rate is too small.
E, flue testing agency 45 runs：When the output of gas detecting instrument 451 is not inconsistent to the gas detection value of PLC controller 11
Preset value gas preset value is closed, such as the density of hydrogen of output exceeds density of hydrogen preset value, PLC controller 11 determines that flue seeps
Leakage, PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time, and pops up flue leakage in human-computer interaction interface 12
Message box.
F, coolant jacket testing agency 46：
When second liquid pressure sensor 461 exports the second liquid pressure detection value to PLC controller 11 in sampling time section
It inside changes, and changing value exceeds error range, PLC controller 11 determines coolant jacket inspection leakage；When being located at coolant jacket
The feed liquor flow detection value of the second liquid flow sensor 462 of liquid feeding end and outlet end output goes out liquid stream detection values difference,
PLC controller 11 equally determines coolant jacket inspection leakage；PLC controller 11 controls corresponding combined aural and visual alarm 71 and opens at this time, and
The message box of coolant jacket inspection leakage is popped up in human-computer interaction interface 12.
Above-mentioned each critical field value, error range are preset by staff according to practical, are stored in PLC controller 11
Etc. to be called.
Referring to Fig. 6, numerical control device 1 is connected with manipulation apparatus for deivation 5, including conveyer belt operation induction detection components 51, cold
But liquid operation induction detection components 52, flue emptying igniting operation induction detection components 53, technological temperature setting induction detection group
Part 54 and charging operation induction feedback component 55.
Referring to figure 6 and figure 7, conveyer belt operation induction detection components 51 include temperature sensor, and the temperature sensor is direct
Using the temperature sensor 31 of temperature control device 3, with save the cost.
When the output of temperature sensor 31 is greater than the first temperature preset value, at this time PLC to the temperature detection value of PLC controller 11
Controller 11 controls combined aural and visual alarm 71 and opens, and synchronously control human-computer interaction interface 12 is shown：Defeated band, which is opened, to be prepared, with prompt
Staff prepares to operate in next step.Text informations such as " defeated band, which is opened, to be prepared " are prestored in the form of internal code is stored in PLC control
In the storage unit of device 11, text prompt information is same setting.
Ready message is opened when staff obtains defeated band, then the subsequent conveyer belt for opening industrial furnace, facilitates conveyer belt
Reach dynamic balance state as early as possible, prepares for feeding.
Referring to figure 6 and figure 7, coolant liquid operation induction detection components 52 include frequency converter 521, and frequency converter 521 is used as control
The driving motor 21 of the conveyer belt of industrial furnace（It is shown in Fig. 2）, while frequency converter 521 is also used as feedback device.Frequency converter 521
Data connection is in PLC controller 11, so that frequency values are fed back to PLC controller 11.
When staff opens the conveyer belt of industrial furnace, frequency converter 521 is exported to be greater than to the frequency values of PLC controller 11
0, PLC controller 11 controls combined aural and visual alarm 71 and opens at this time, and controls the display of human-computer interaction interface 12：Coolant liquid is opened quasi-
It is standby.Coolant liquid supply/circulatory system of follow-up work personnel unlatching industrial furnace.Why start at this time convey coolant liquid rather than
Industrial furnace is enabled once being switched on, primarily to reducing the waste of coolant liquid.
Referring to figure 6 and figure 7, flue emptying igniting operation induction detection components 53 include the flow inspection detected to fluid
Part is surveyed, flow detection part directlys adopt the first liquid flow sensor 442.
When the output of frequency converter 521 is greater than 0 to the frequency values of PLC controller 11, and the first liquid flow sensor 442 is defeated
It is greater than preset flow value to the flow value detected value of PLC controller 11 out, then PLC controller 11 controls combined aural and visual alarm 71 and opens
It opens, and controls the display of human-computer interaction interface 12：Flue emptying igniting prepares.
It is emptied when the flue emptying of industrial furnace using protection gas, protecting the ingredient of gas is hydrogen and nitrogen, and is arranged
It is nitrogen that flue is preferentially passed through when empty, then the gaseous mixture of logical hydrogen and nitrogen.Why first it is passed through nitrogen to be emptied, mainly
Be it is subsequent when being passed through hydrogen and nitrogen in order to prevent, there are air for flue internal cause, the problem of nature detonation occur.
When staff obtains flue emptying igniting ready message, staff first controls industrial furnace and carries out emptying behaviour
Make, controls industrial furnace again later and do ignition operation.Igniting herein, which refers to, lights a fire to the protection gas that industrial furnace is sent,
Primarily to avoiding it from being directly discharged into atmosphere and polluting the environment protection gas consumption.
Referring to figure 6 and figure 7, technological temperature setting induction detection components 54 include flame detector 82, flame detector 82
Test side towards the protection gas output end of industrial furnace, mainly whether light a fire to detection device.82 data of flame detector
It is connected to PLC controller 11, detect and exports fire defector value to PLC controller 11.
Show that conveyer belt is opened, the first liquid flow sensor 442 exports when the frequency values that frequency converter 521 exports are greater than 0
Flow detection value be greater than flow preset value and show that cooling water is opened, fire defector value meets flame preset value and show equipment
Igniting, then PLC controller 11 controls combined aural and visual alarm 71 and opens, and controls the display of human-computer interaction interface 12：Technological temperature setting
Prepare.
Ready message is set when staff obtains technological temperature, just according to the process requirements of different workpieces to industrial furnace
Temperature be configured, select suitable heating process in other words.
Referring to figure 6 and figure 7, charging operation induction feedback component 55 includes timer 61, and there are two types of selections for timer 61：One
Kind saves cost, another kind is using external timer using timing module pre- inside PLC；The connection of 61 electric signal of timer
PLC controller 11, in other words data processing unit.
When the temperature detection value that temperature sensor 31 exports meets second temperature preset range value, PLC controller 11 is opened
It opens timer 61 and carries out timing；Second temperature preset range value is staff according to workpiece setting technological temperature.Work as timer
The clocking value of 61 outputs is equal to greatly default timing value, then PLC controller 11 controls combined aural and visual alarm 71 and opens, and controls man-machine friendship
Mutual interface 12 is shown：Charging prepares.
When staff obtains charging ready message, so that it may which workpiece is placed in conveyer belt upper feeding.Why need
Reach second temperature preset range value（Processing technology demand temperature）After need just to feed after a period of time, main purpose be for
Flue constant temperature is set to be kept for a period of time, to guarantee the subsequent processing effect to workpiece.
Manipulation apparatus for deivation 5 further includes shutdown induction, and operation is the above-mentioned induced inner content of reverse operating.First stop charging,
Cool down again, be then switched off protection gas and put out a fire, then stop coolant liquid, stop conveyer belt later, finally industrial furnace is shut down.
Referring to Fig. 8, numerical control device 1 is also connected with vulnerable part monitoring device 6, and vulnerable part monitoring device 6 includes timer, should
Timer directlys adopt timer 61.
It is pre-stored start trigger temperature value, in PLC controller 11 for the calling of PLC controller 11.Work as temperature detection
Value is greater than start trigger temperature value, and PLC controller 11 controls 61 timing of timer；61 timing of timer simultaneously exports clocking value and arrives
PLC controller 11.PLC controller 11, which is handled and exported, is stored as hot operation timing in clocking value to PLC controller 11
Value, i.e. hot operation duration.Hot operation clocking value is set as storing by the way of accumulative, except non-working person is manually to meter
Duration is reset, and otherwise the clocking value of timer 61 is cumulative, or is stored to the hot operation clocking value of PLC controller 11 and added up.
By above-mentioned setting, the present invention can be monitored, the operation duration of statistics vulnerable part at high operating temperatures, to use
Person more accurately estimates the vulnerable part service life, replaces to it；Staff is facilitated to understand the loss rule of vulnerable part, also simultaneously with right
Production technology optimizes.
Further, alarm triggering temperature value is pre-stored in PLC controller 11.When temperature detection value is greater than alarm triggering
Temperature value, PLC controller 11 controls combined aural and visual alarm 71 and opens prompt staff, and output temperature detected value is controlled to PLC
Device 11 is stored as overtemperature alarm temperature value；PLC controller 11 controls human-computer interaction interface 12 and shows overtemperature alarm information simultaneously, surpasses
Warm warning message is pre-stored in PLC controller 11, other subsequent warning messages are equally arranged, and is waited called.Pass through alarm signal
Where breath staff more convenient can know problem, react in time.
Vulnerable part monitoring device 6 further includes the counter 62 of electric signal connection PLC controller 11.When temperature detection value is greater than
Alarm triggering temperature value is primary, and 11 control counter 62 of PLC controller counts once, and counter 62 counts and exports count value and arrives
PLC controller 11, PLC controller 11 exports count value and is stored as alarm times value to PLC controller 11, so that the present invention may be used also
To be counted to overtemperature alarm number.
Temperature sensor 31 and combined aural and visual alarm 71 correspond, and respectively correspond each group of heating elements, i.e. flue
Each region, staff can know the overtemperature position of flue by combined aural and visual alarm 71.Simultaneously to each combined aural and visual alarm 71
Number, in use, PLC controller 11 records and stores the number of the combined aural and visual alarm 71 of unlatching, i.e. alert locations, so as to subsequent
Staff improves technique and equipment according to alert locations.
Normal temperature value range is pre-stored in PLC controller 11, normal temperature value range is according to work pieces process technique
Temperature setting.When to be greater than start trigger temperature value primary and comply with standard that temperature range value is primary or temperature inspection for temperature detection value
Measured value complies with standard that temperature range value is primary and primary, 11 control counter of PLC controller that is less than or equal to start trigger temperature value
62 count once, and counter 62, which counts, simultaneously exports count value to PLC controller 11, and PLC controller 11 exports count value and controls to PLC
Device 11 processed is stored as hot and cold alternation count value.Hot and cold alternation will cause vulnerable part loss, therefore be monitored to it, count cold and hot
Alternately count value is equally stored by the way of cumulative, is done and is joined when for estimating vulnerable part service life the later period for staff
It examines.
It is also run referring to Fig. 8 since the service life of the conveyer belt in vulnerable part is not only influenced by hot operation duration
Total kilometrage and load effect, so vulnerable part monitoring device 6 further includes that conveying tape speed obtains mechanism, second voltage sensor
63 and third current sensor 64.Wherein conveying tape speed obtains mechanism and directlys adopt velocity measuring part 22.
The speed detection value of clocking value, the output of velocity measuring part 22 that PLC controller 11 is exported according to timer 61 calculates
It show that conveyer belt runs total kilometrage value, and is stored in PLC controller 11.Conveyer belt runs total kilometrage value=clocking value * speed
Detected value is spent, conveyer belt operation total kilometrage value is calculated according to the formula in PLC controller 11.
The change on the major loop of frequency converter is electrically connected in second voltage sensor 63 and third current sensor 64
Frequency device is used to control the driving motor of conveyer belt；Second voltage sensor 63 and third current sensor 64 are detected and are exported respectively
Voltage detecting value and current detection value, so that staff determines industrial furnace whether transport by excess load according to voltage value or current value
Row.
Ordinary circumstance lower conveyer belt in the process of running, the voltage value in frequency converter circuit, current value variation will not very greatly,
Also inconvenient that loading condition judge according to it, but the conveyer belt own wt of industrial furnace is originally just relatively large, when operation
Conveying is again metal works, so once there is overload operation, voltage value and current value can occur significantly to become relatively
Change, thus staff can according to its determine conveyer belt whether overload operation.
Gauge load voltage range values and gauge load current range value are pre-stored in PLC controller 11, when voltage is examined
When measured value exceeds gauge load current range value beyond gauge load voltage range values or current detection value, PLC controller 11 is controlled
Combined aural and visual alarm 71 processed is opened, and to prompt staff to adjust the piece count on conveyer belt, avoids conveyer belt overload operation,
Reduce the abnormal waste of conveyer belt.When combined aural and visual alarm 71 is opened, 11 synchronously control human-computer interaction interface 12 of PLC controller is aobvious
Show conveyer belt excess load information.
In order to facilitate staff's use, it is pre-stored several vulnerable part life prediction values in PLC controller 11, works as high temperature
It runs the sum of clocking value and is more than or equal to vulnerable part life prediction value, PLC controller 11 controls combined aural and visual alarm 71 and opens, and controls
Human-computer interaction interface 12 processed shows that vulnerable part replaces information, and the information is equally pre-stored.
Because the service life of flue, heating element and conveyer belt is not identical, when monitoring record vulnerable part, PLC control
Device 11 processed stores the monitoring record of flue, heating element and conveyer belt to PLC controller 11 respectively, and monitoring record is divided into flue
Monitoring record, heating element monitoring record and conveyer belt flue monitoring record.
The loss of the vulnerable part of industrial furnace can be counted, using duration according to the arrangement above present invention, convenient for users to
It is subsequent that the vulnerable part service life is more accurately estimated according to clocking value, it is replaced；Staff is also facilitated to understand vulnerable part simultaneously
Loss rule, optimizes production technology.
Referring to Fig.1 and Fig. 8, numerical control device 1 are also connected with igniting monitoring device 8, and igniting monitoring device 8 includes igniter 81
The detection piece whether being ignited with the protection gas of detection industrial furnace, the detection piece use flame detector 82.
The conventional electric control igniter of the selection of igniter 81 on the market, is mounted on the protection gas outlet of industrial furnace, and
It is electrically connected to PLC controller 11, so that staff controls equipment igniting.
In addition to above-mentioned each device, the present invention should also connect each solenoid valve etc. of industrial furnace, that is, include regular industrial electric furnace
Base control unit, to constitute complete control system.
In summary：The present invention can carry out production management to industrial furnace more comprehensively, efficiently；It can reduce equipment
The skill requirement of operator facilitates staff to manipulate industrial furnace, copes with the situation that will appear in all kinds of production processes, make
With more convenient.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of industrial furnace control system, including numerical control device（1）, transmission control device（2）And temperature control device（3）, institute
State transmission control device（2）And temperature control device（3）It is connected to numerical control device（1）, it is characterised in that：The numerical control device
（1）Including PLC controller（11）And human-computer interaction interface（12）, the temperature control device（3）PLC control is connected to including electric signal
Device processed（11）Temperature sensor（31）With multiple industrial furnaces heating element for heating（32）, the temperature sensor
（31）The flue temperature of industrial furnace and output temperature detected value are detected to PLC controller（11）, the PLC controller（11）In advance
It is arranged and stores a variety of heating process, a variety of heating process include that new furnace enables heating process, the technique that is rapidly heated, slope heating
Technique and staged heating process, the PLC controller（11）Heating element is controlled according to heating process and temperature detection value
（32）Heating, the PLC controller（11）It is also connected with startup self-detection device（4）, manipulation apparatus for deivation（5）And vulnerable part prison
Survey device（6）.
2. industrial furnace control system according to claim 1, it is characterised in that：The transmission control device（2）Including
For driving the driving motor of industrial furnace conveyer belt（21）And the velocity measuring part for detecting conveying tape speed（22）, institute
State velocity measuring part（22）Detect simultaneously output speed detected value, the PLC controller（11）Electric signal is connected to driving motor
（21）With velocity measuring part（22）.
3. industrial furnace control system according to claim 2, it is characterised in that：The numerical control device（1）It is connected with and mentions
Showing device（7）, the suggestion device（7）PLC controller is connected to including multiple electric signals（11）Combined aural and visual alarm（71）.
4. industrial furnace control system according to claim 3, it is characterised in that：The PLC controller（11）Data connect
It is connected to several computers（13）, the computer（13）Data connection cloud server.
5. industrial furnace control system according to claim 3, it is characterised in that：The startup self-detection device（4）Including
Power supply testing agency（41）, heating member circuit testing agency（42）, protection gas testing agency（43）, coolant liquid testing agency
（44）, flue testing agency（45）And coolant jacket testing agency（46）.
6. industrial furnace control system according to claim 3, it is characterised in that：The manipulation apparatus for deivation（5）Including
Conveyer belt operation induction detection components（51）, coolant liquid operation induction detection components（52）, flue emptying igniting operation induction inspection
Survey component（53）, technological temperature setting induction detection components（54）And charging operation induction feedback component（55）.
7. industrial furnace control system according to claim 3, it is characterised in that：The vulnerable part monitoring device（6）Packet
It includes electric signal and is connected to PLC controller（11）Timer（61）, when the temperature sensor（31）The temperature detection value of output
Beyond preset start trigger temperature value, the PLC controller（11）Control timer（61）Timing, and record storage timer
（61）Clocking value.
8. industrial furnace control system according to claim 4, it is characterised in that：The PLC controller（11）It is also connected with
Igniting monitoring device（8）, the igniting monitoring device（8）Including igniter（81）And flame detector（82）, the PLC control
Device（11）Control igniter（81）Opening and closing, the flame detector（82）The protection gas of industrial furnace discharge is detected whether by point
Combustion.
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