CN106350657A - Anti-deflection alarm system used in continuous vertical annealing oven - Google Patents
Anti-deflection alarm system used in continuous vertical annealing oven Download PDFInfo
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- CN106350657A CN106350657A CN201610748387.8A CN201610748387A CN106350657A CN 106350657 A CN106350657 A CN 106350657A CN 201610748387 A CN201610748387 A CN 201610748387A CN 106350657 A CN106350657 A CN 106350657A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/564—Tension control
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- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Control Of Heat Treatment Processes (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
This invention disclose a kind of anti-deflection alarm system used in continuous vertical annealing oven. It includes tension alarm module including tension modification protection module, used to identify whether annealing oven meets the first permanent condition or not, whether annealing oven meets the first initial condition. When annealing oven meets the first permanent and initial conditions, the alarm will be triggered. The differential temperature alarm module is used for the temperature difference of plate and area, the anti-deflection equipment is used to monitor and control cold state deflection limit specification, the steel belt transition alarm module is used to specification transition alarm, temperature transition alarm and hot roller alarm during oven starting, the speed alarm module is used to identify whether annealing oven meets the second permanent condition: production mode class 2, or present oven speed is maintained continuously for 2h >= Alpha, and whether annealing oven meets the second initial condition: the present oven speed < minimum operation speed; when annealing oven meet the second permanent condition and initial condition at the same time, the alarm will be triggered.
Description
Technical field
The application is related to technical field of steel rolling, and more particularly, to a kind of anti-wooden dipper applied in vertical continuous annealing furnace is bent to report to the police
System.
Background technology
After annealing furnace is heated section uniform temperature, yield strength drastically reduces chill volume, for example the strip steel of the dc03 trade mark
It is heated to after 800 DEG C by 200 DEG C, yield strength rp0.2 is reduced to 14mpa by 493mpa.Now in stove strip steel in width side
Lead to bending deformation to the transverse compression stress easily receiving the temperature difference and tension force generation, see Fig. 1.Often in stove internal tension
Or during temperature anomaly, operative employee can not find to lead to strip steel wooden dipper song broken belt in stove in time.Cold rolling portion of Shoudu Iron and Steel Co capital Tang 2009
To 2015 68 times unplanned blow-on lids because the unplanned blow-on lid that strip steel wooden dipper song leads to is up to 30 times, detail is shown in Table 1.Wherein
Up to 100,000 yuan of unplanned blow-on lid direct economic loss each time.Stably lead to plate energy for improving annealing and galvanizing producing line
Power, a kind of anti-wooden dipper song warning system applied in vertical continuous annealing furnace of special research and development is it is intended to ensure that strip steel is " peaceful in annealing furnace
Stop not wooden dipper, peaceful wooden dipper continuous ".
Content of the invention
Invention provides a kind of anti-wooden dipper song warning system applied in vertical continuous annealing furnace, to solve existing skill
The technical problem that in art, strip steel wooden dipper can not find when bent in time.
For solving above-mentioned technical problem, the invention provides a kind of anti-wooden dipper applied in vertical continuous annealing furnace is bent reporting to the police
System, comprising:
Tension force alarm module, comprising: tension force changes protection module, permanent for judging whether described annealing furnace meets first
Condition: as forehearth area speed >=α (α=30m/min～60m/min)；And it is initial to judge whether described annealing furnace meets first
Condition: present single modification amplitude limit >=1kn；When described annealing furnace meets described first persistent condition and described first initial simultaneously
Condition, then triggering is reported to the police；
Temperature difference alarm module, for the warning of the temperature difference in the gentle region of plate, anti-wooden dipper song monitoring of tools and Limit specifications are cold
Wooden dipper is bent to be controlled；
Strip steel transition alarm module, reports to the police for specification transition, and temperature transition is reported to the police and opened stove hot-rolling and reports to the police；
Acceleration alert module, for judging whether described annealing furnace meets the second persistent condition: 2 grades of production model, or
Described continue 2 hours >=α when forehearth area speed；And judge whether described annealing furnace meets described second initial condition: described
When forehearth area speed ＜ minimum operation speed；When described annealing furnace meets described second persistent condition and described second initial simultaneously
Condition, then triggering is reported to the police.
2nd, the system as claimed in claim 1, it is characterised in that described tension force modification protection module, is additionally operable in triggering
After warning, point out described annealing furnace when forehearth area speed and present single modification amplitude limit invalid, keep Yuan Lu area speed
And former single changes amplitude limit.
Preferably, described tension force alarm module also includes:
Tension force limits module, for controlling the warning in production model, creep mode, Manual Mode for the described annealing furnace；
Tonometer failure protection module, for controlling the warning based on current tensile measured value for the described annealing furnace.
Preferably, described tension force limits module and includes:
Production model tension force limits module, is used for:
Judge whether described annealing furnace meets the 3rd persistent condition: described when forehearth area speed >=α (α=30m/min～
60m/min), and described soaking zone regional temperature ＞ β (β=460 DEG C～520 DEG C) when forehearth area；And
Judge whether described annealing furnace meets the 3rd initial condition: bis- grades of setting tension force of current tensile setting value ＜
50%；And
Judge whether described annealing furnace meets the 4th initial condition: two grades of settings described in described current tensile setting value ＞
The 150% of power；
When described annealing furnace is on the basis of meeting described 3rd persistent condition, it is initial that described annealing furnace meets the described 3rd
Any one in condition and described 4th initial condition, then triggering is reported to the police；
Creep mode tension force limits module, is used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 5th initial conditions: described current car tension force setting value ＞ min (min=
60%, 9mpa of described two grades of setting tension force)；
When described annealing furnace meets described first persistent condition and described 5th initial conditions simultaneously, then triggering is reported to the police；
Manual Mode tension force limits module, is used for:
Judge whether described annealing furnace meets the 4th persistent condition: when forehearth area is in crawl state；Crawl, refers to furnace roller
Rotated with the speed of 30～60m/min, it is divided into no-station pole canopy and tensioned crawl, often used in threading operation.With
And
Judge whether described annealing furnace meets the 6th initial condition: current bringing-up section tension force >=γ (γ=3～9mpa)；
Judge whether described annealing furnace meets the 7th initial condition: current soaking zone tension force >=γ；
When described annealing furnace is on the basis of meeting described 4th persistent condition, it is initial that described annealing furnace meets the described 6th
Any one in condition and described 7th initial condition, then triggering warning system warning.
Preferably, described tonometer failure protection module, comprising:
Tension measurements trigger alarm module, are used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 8th initial condition: the first tonometer, the arbitrary current survey of the second tonometer
Value ＜ 100n, or current tensile deviation ＞ 300n；Tonometer, in jockey pulley driving side and each configuration of fore side one, is divided
It is not designated as the first tonometer, the second tonometer.
Judge whether described annealing furnace meets the 9th initial condition: when forehearth area tension measurements and actual tension setting value
Difference reach the 30% of described actual tension setting value；
Judge whether described annealing furnace meets the tenth initial condition: described as bis- grades of tension force * of forehearth area tension measurements ＞
150%；
Judge whether described annealing furnace meets the 11st initial condition: described when forehearth area tension measurements ＜ bis- grades
Power * 50%；
Judge whether described annealing furnace meets the 12nd initial condition: described first tonometer, described second tonometer
Both sides pressure head difference ＞ 3kn；
On the basis of described annealing furnace meets described first persistent condition, meet described 8th initial condition, described
Any one in nine initial condition, described tenth initial condition, described 11st initial condition, described 12nd initial condition
Individual, then triggering is reported to the police, and alarm content is described annealing furnace when forehearth area tension force exception；
Tension measurements trigger parking module, are used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 13rd initial condition: described when forehearth area tension measurements and described reality
The difference of tension force setting value reaches the 80% of described actual tension setting value；
Judge whether described annealing furnace meets the 14th initial condition: described first tonometer, described second tonometer
Both sides pressure head difference, sets the 80% of tension force more than total；
Judge whether described annealing furnace meets the 15th initial condition: described first tonometer, described second tonometer
Unilateral pressure head value measured value is zero (＜ 0.1kn).
When described annealing furnace is on the basis of meeting described first persistent condition, meet described 13rd initial condition, institute
State the 14th initial condition, described 15th initial condition any one, then triggering report to the police, and control stove area stop.
Preferably, described temperature difference alarm module, comprising:
The temperature difference module in the gentle region of plate, is used for:
Judge whether described annealing furnace meets described second persistent condition；
Judge whether described annealing furnace meets the 16th initial condition: as header board Wen-when proparea temperature ＞ alarming value；And
Judge whether described annealing furnace meets the 17th initial condition: when header board temperature setting value-as header board temperature actual value ＞
Alarming value；And
Judge whether described annealing furnace meets the 18th initial condition: when proparea temperature setting value-as proparea temperature actual value ＞
Alarming value；
If on the basis of meeting described second persistent condition, meet described 16th initial condition, the described 17th
Initial condition, described 18th initial condition any one, then trigger audio alert；Audio alert content: when forehearth area temperature
Degree is abnormal；
Anti- wooden dipper song monitoring of tools module, is used for:
Judge whether described annealing furnace meets the 5th persistent condition: when forehearth area is in production model；And
Judge whether described annealing furnace meets the 19th initial condition: electric radiant tube power down；
If meet described 5th persistent condition and described 19th initial condition simultaneously, system voice is reported to the police, language
Sound alarm content: electric radiant tube power down；
Limit specifications cold wooden dipper song control module, is used for:
Judge whether described annealing furnace meets the 6th persistent condition: strip steel belongs to Limit specifications；
Judge whether described annealing furnace meets the 20th initial condition: toa strip-ε>190,
If meet described 6th persistent condition and described 20th initial condition, man-machine interaction hmi interface simultaneously
Display: recommend oa section design temperature=190+ ε；Hmi interface: recommend cold section of design temperature=190 eventually；Otherwise described hmi interface
Display: recommend cold section of desired temperature=max (t eventuallyfcs strip,120),tfcs strip=toa strip-ε；Recommend cold section of setting eventually
Temperature=overaging section desired temperature；Wherein, tfcs strip: cold section of setting value eventually；ε: cold section of alarm temperature setting value eventually；
toa strip: overaging section setting value.
Preferably, described strip steel transition alarm module includes:
Specification transition alarm module, for judging whether front and back band steel specification transition sets more than the transition upper limit, if so, touches
Transmit messages police；
Temperature transition alarm module, for judging in temperature change, whether described front and back band steel specification transition is more than institute
State the transition upper limit to set, if so, then triggering is reported to the police；
Open road hot-rolling alarm module: for judging during opening stove hot-rolling, whether described front and back band steel specification transition is big
Set in the described transition upper limit, if so, then triggering is reported to the police.
Preferably, described acceleration alert module, is additionally operable to send audio alert, alarm content: described when forehearth area speed
Too low.
Preferably, described production model tension force limits module, be additionally operable to prompting described when forehearth area speed, described work as forehearth
The soaking zone regional temperature in area, described current tensile setting value are all invalid, keep described Yuan Lu area speed, the soaking zone in Yuan Lu area
Regional temperature, initial tension setting value；
Described creep mode tension force limits module, is additionally operable to limit described current car tension force setting value=min that (two grades set
Determine 60%, 9mpa of tension force)；
Described Manual Mode tension force limits module, is additionally operable to control described annealing furnace to stop crawl.
Preferably, described acceleration alert module, is additionally operable to point out stove area speed too low.
By one or more technical scheme of the present invention, the invention has the advantages that or advantage:
A kind of anti-wooden dipper song warning system applied in vertical continuous annealing furnace of present invention design, comprising: tension force is reported to the police
Module, comprising: tension force changes protection module, for judging whether described annealing furnace meets the first persistent condition: when forehearth area speed
Degree >=α (α=30m/min～60m/min)；And judging whether described annealing furnace meets the first initial condition: present single is repaiied
Change amplitude limit >=1kn；When described annealing furnace meets described first persistent condition and described first initial condition simultaneously, then triggering report
Alert；Temperature difference alarm module, for the warning of the temperature difference in the gentle region of plate, anti-wooden dipper song monitoring of tools and the bent control of the cold wooden dipper of Limit specifications
System；Strip steel transition alarm module, reports to the police for specification transition, and temperature transition is reported to the police and opened stove hot-rolling and reports to the police；Acceleration alert mould
Block, for judging whether described annealing furnace meets the second persistent condition: 2 grades of production model, or described holds when forehearth area speed
Continuous 2 hours >=α；And judge whether described annealing furnace meets described second initial condition: described when forehearth area speed ＜ minimum
The speed of service；When described annealing furnace meets described second persistent condition and described second initial condition simultaneously, then triggering is reported to the police.By
Can be reported to the police at aspects such as temperature, tension force in designed system of the present invention, and then be produced in annealed sheet and galvanizing slab furnace
Adopt this system in product production process, can effectively reduce and fail to find in time, locate due to temperature, tension force exception and operative employee
Reason leads to strip steel wooden dipper song broken belt accident in stove, improves producing line and stably leads to plate ability, is reducing enterprise cost benefit.
Brief description
Fig. 1 is the bent schematic diagram of strip steel wooden dipper in prior art；
Fig. 2 is the schematic diagram of embodiment of the present invention crystallite dimension；
Fig. 3 is a kind of structural representation of the anti-wooden dipper song warning system applied in vertical continuous annealing furnace of the embodiment of the present invention
Figure；
Fig. 4 is the embodiment of the present invention on January 20th, 2016 1420cal3 rapid cooling section temperature anomaly lift curves schematic diagram.
Specific embodiment
In order that the application the technical staff in the technical field is more clearly understood that the application, below in conjunction with the accompanying drawings,
By specific embodiment, technical scheme is described in detail.
In embodiments of the present invention, there is provided a kind of anti-wooden dipper song warning system applied in vertical continuous annealing furnace.
In actual applications, steel products production stage is: through consistent ironmaking, steel-making, hot rolling, cold rolling, production
Go out the product size of user's needs, range of product size is:
Tinning substrate: thickness specification 0.15≤h≤0.55mm, width specifications 730≤w≤1280mm；
The zinc-plated and annealing volume of the purposes such as appliance plate, Automobile Plate: thickness specification 0.25≤h≤3mm, width specifications 750
≤w≤2080mm.
Annealing furnace production stage:
1.1, according to " post treatment line feeding standard ", examine and whether meet line standard；
1.2 according to the specification ratio of welding machine carry out two coiling welded connect, and weldquality is ensured according to " weld seam clearance standard "；
According to " cleaning section process parameter control ", 1.3 ensure that cleaning quality is without exception；
1.4, according to producing control main points, set strip steel strip steel annealing temperature in stove；
Strip steel after annealing is carried out smooth, elimination yield point elongation by 1.5.
In specific implementation process, this system is mainly used in carrying out early warning in vertical continuous annealing furnace, and then keeps away
Exempt from because under temperature, tension force unusual condition, operative employee fails to find in time, processes and lead to strip steel wooden dipper song broken belt in stove, raising is moved back
Fire and galvanizing producing line stably lead to plate ability.The schematic diagram of strip steel wooden dipper song in stove is referring to Fig. 1.Table 1 is 2009 to 2016
Year wooden dipper song reason leads to unit unplanned blow-on lid accident detailed.
In order to prevent this situation, the control mechanism of the warning system of present invention design includes following four aspects:
1st, tension force is reported to the police:
Tension force is reported to the police and is mainly carried out early warning in terms of following three: tension force modification defence program is reported to the police, tension force restricted program report
Alert, tonometer error protection program is reported to the police.
2nd, the temperature difference is reported to the police:
The temperature difference is reported to the police and is mainly carried out early warning: the temperature difference in the gentle region of plate in terms of three below, anti-wooden dipper song monitoring of tools with
And the bent control of the cold wooden dipper of Limit specifications (for example: wide cut if steel).
3rd, strip steel transition is reported to the police:
Strip steel transition is reported to the police and is divided into: specification transition is reported to the police, and temperature transition is reported to the police and opened stove hot-rolling and reports to the police.
4th, acceleration alert:
Acceleration alert is divided into: minimum operation acceleration alert.
Specifically, this anti-wooden dipper song warning system is referring to Fig. 3, comprising: tension force alarm module 1, temperature difference alarm module 2, band
Steel transition alarm module 3, acceleration alert module 4.
Tension force alarm module 1, comprising: tension force changes protection module, for judging whether described annealing furnace meets first forever
Condition long: as forehearth area speed >=α (α=30m/min～60m/min)；And judge whether described annealing furnace meets at the beginning of first
Beginning condition: present single modification amplitude limit >=1kn；At the beginning of described annealing furnace meets described first persistent condition and described first simultaneously
Beginning condition, then triggering is reported to the police；
Temperature difference alarm module 2, for the warning of the temperature difference in the gentle region of plate, anti-wooden dipper song monitoring of tools and Limit specifications are cold
Wooden dipper is bent to be controlled；
Strip steel transition alarm module 3, reports to the police for specification transition, and temperature transition is reported to the police and opened stove hot-rolling and reports to the police；
Acceleration alert module 4, for judging whether described annealing furnace meets the second persistent condition: 2 grades of production model, or
Described continue 2 hours >=α when forehearth area speed；And judge whether described annealing furnace meets described second initial condition: described
When forehearth area speed ＜ minimum operation speed；When described annealing furnace meets described second persistent condition and described second initial simultaneously
Condition, then triggering is reported to the police.Described acceleration alert module 4, is additionally operable to send audio alert, alarm content: described when forehearth area speed
Spend low.
In annealed sheet and galvanizing slab furnace process of producing product adopt this system, effectively reduce due to temperature,
Tension force exception and operative employee fail to find in time, process and lead to strip steel wooden dipper song broken belt accident in stove, improves producing line and stably leads to plate
Ability, is reducing enterprise cost benefit.
Lower mask body introduces effect and the structure of modules.
Tension force alarm module 1 includes: tension force modification protection module, and tension force limits module, tonometer failure protection module.
Specifically, tension force modification protection module is provided with two Rule of judgment:
Described first persistent condition is: as forehearth area speed >=α (α=30m/min～60m/min)；
Described first initial condition is: present single modification amplitude limit >=1kn (thousand Ns)；
Tension force changes protection module, is mainly used in judging whether described annealing furnace meets the first persistent condition: work as forehearth area
Speed >=α (α=30m/min～60m/min)；And judge whether described annealing furnace meets the first initial condition: present single
Modification amplitude limit >=1kn；When described annealing furnace meets described first persistent condition and described first initial condition simultaneously, then triggering report
Alert.
In specific implementation process, mainly judge annealing furnace when forehearth area speed whether >=α, and annealing furnace in
Present single changes amplitude limit >=1kn.If two conditions all meet, triggering report to the police after, point out annealing furnace when forehearth area speed
Degree and present single modification amplitude limit are invalid, keep Yuan Lu area speed and former single modification amplitude limit.In actual applications, report to the police
The mode of prompting has multiple, such as sound and light alarm prompting, word alarm etc., audio alert prompting etc., and the here present invention is not
It is limited.This type of alarm is also applied for the warning of all modules in literary composition.
Tension force limits module, for controlling the warning in production model, creep mode, Manual Mode for the described annealing furnace.
Specifically, tension force limits module and includes: production model tension force limits module, and creep mode tension force limits module,
Manual Mode tension force limits module.
Production model tension force limits module.
Limit in module in production model tension force, there is following Rule of judgment:
3rd persistent condition: described as forehearth area speed >=α (α=30m/min～60m/min), and described work as forehearth area
Soaking zone regional temperature ＞ β (β=460 DEG C～520 DEG C).
3rd initial condition: the 50% of bis- grades of setting tension force of current tensile setting value ＜.
4th initial condition: the 150% of two grades of setting tension force described in described current tensile setting value ＞.
Production model tension force limits module, is mainly used in:
Judge whether described annealing furnace meets the 3rd persistent condition, meet the 3rd persistent condition and be meant that: must be simultaneously
Meet the soaking zone regional temperature ＞ β as forehearth area speed >=α and when forehearth area；And
Judge whether described annealing furnace meets the 3rd initial condition: bis- grades of setting tension force of current tensile setting value ＜
50%；And
Judge whether described annealing furnace meets the 4th initial condition: two grades of settings described in described current tensile setting value ＞
The 150% of power；
When described annealing furnace is on the basis of meeting described 3rd persistent condition, it is initial that described annealing furnace meets the described 3rd
Any one in condition and described 4th initial condition, then triggering is reported to the police.And it is additionally operable to described in prompting work as forehearth area speed, institute
State soaking zone regional temperature when forehearth area, described current tensile setting value all invalid, keep initial value (Yuan Lu area speed, former stove
The soaking zone regional temperature in area, initial tension setting value).
Creep mode tension force limits module.
Limit in module in creep mode tension force, there are following two Rule of judgment:
First persistent condition: as forehearth area speed >=α (α=30m/min～60m/min).
5th initial conditions: described current car tension force setting value ＞ min (the 60% of two grades of setting tension force described in min=,
9mpa)；
And then creep mode tension force limits module and is used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 5th initial conditions: described current car tension force setting value ＞ min (min=
60%, 9mpa of described two grades of setting tension force)；
When described annealing furnace meets described first persistent condition and described 5th initial conditions simultaneously, then triggering is reported to the police；Separately
Outward, then control and limited car tension force setting value=min (60%, 9mpa of two grades of setting tension force).
Manual Mode tension force limits module.
Limit in module in Manual Mode tension force, there is following Rule of judgment:
4th persistent condition: when forehearth area is in crawl state；
6th initial condition: current bringing-up section tension force >=γ (γ=3～9mpa)；
7th initial condition: current soaking zone tension force >=γ；
And then Manual Mode tension force limits module and is used for:
Judge whether described annealing furnace meets the 4th persistent condition: when forehearth area is in crawl state；And
Judge whether described annealing furnace meets the 6th initial condition: current bringing-up section tension force >=γ (γ=3～9mpa)；
Judge whether described annealing furnace meets the 7th initial condition: current soaking zone tension force >=γ；
When described annealing furnace is on the basis of meeting described 4th persistent condition, it is initial that described annealing furnace meets the described 6th
Any one in condition and described 7th initial condition, then triggering warning system warning, and control restriction annealing furnace not allow
Crawl.
Tonometer failure protection module.
Tonometer failure protection module, for controlling the warning based on current tensile measured value for the described annealing furnace.
Tonometer failure protection module, specifically includes: tension measurements triggering alarm module, and tension measurements triggering is stopped
Module.
Tension measurements trigger alarm module.
In tension measurements triggering alarm module, specifically include following Rule of judgment:
First persistent condition；
8th initial condition: the first tonometer, arbitrary current measurement value ＜ 100n of the second tonometer, or current tensile
Deviation ＞ 300n.In this two conditions, as long as meet any one just to illustrate to meet the 8th initial condition.
9th initial condition: set when the difference of forehearth area tension measurements and actual tension setting value reaches described actual tension
The 30% of definite value.
Tenth initial condition: described as bis- grades of tension force * 150% of forehearth area tension measurements ＞.Wherein, two grades of tension force are to be
System calls second databases to obtain automatically.
11st initial condition: described as bis- grades of tension force * 50% of forehearth area tension measurements ＜.
12nd initial condition: described first tonometer, the both sides pressure head difference ＞ 3kn of described second tonometer.
And then tension measurements triggering alarm module, it is used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 8th initial condition: the first tonometer, the arbitrary current survey of the second tonometer
Value ＜ 100n, or current tensile deviation ＞ 300n；
Judge whether described annealing furnace meets the 9th initial condition: when forehearth area tension measurements and actual tension setting value
Difference reach the 30% of described actual tension setting value；
Judge whether described annealing furnace meets the tenth initial condition: described as bis- grades of tension force * of forehearth area tension measurements ＞
150%；
Judge whether described annealing furnace meets the 11st initial condition: described when forehearth area tension measurements ＜ bis- grades
Power * 50%；
Judge whether described annealing furnace meets the 12nd initial condition: described first tonometer, described second tonometer
Both sides pressure head difference (that is: being the tension variation that tonometer detects) ＞ 3kn；
On the basis of described annealing furnace meets described first persistent condition, meet described 8th initial condition, described
Any one in nine initial condition, described tenth initial condition, described 11st initial condition, described 12nd initial condition
Individual, then triggering is reported to the police, alarm content be described annealing furnace when forehearth area tension force abnormal it is noted that！
Tension measurements trigger parking module.
Trigger parking module in tension measurements, specifically include following condition:
First persistent condition.
13rd initial condition: the described difference when forehearth area tension measurements and described actual tension setting value reaches described
The 80% of actual tension setting value.
14th initial condition: described first tonometer, the both sides pressure head difference of described second tonometer, set more than total
The 80% of tension force.
15th initial condition: described first tonometer, the unilateral pressure head value measured value of described second tonometer are zero (＜
0.1kn).
And then tension measurements triggering parking module, it is used for
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 13rd initial condition: described when forehearth area tension measurements and described reality
The difference of tension force setting value reaches the 80% of described actual tension setting value；
Judge whether described annealing furnace meets the 14th initial condition: described first tonometer, described second tonometer
Both sides pressure head difference, sets the 80% of tension force more than total；
Judge whether described annealing furnace meets the 15th initial condition: described first tonometer, described second tonometer
Unilateral pressure head value measured value is zero (＜ 0.1kn).Wherein, each tonometer is by two pressure head measured values with as actual
Power, measuring gage typical value 0.1 in this is to prevent the 0 of measured value drift.
When described annealing furnace is on the basis of meeting described first persistent condition, meet described 13rd initial condition, institute
State the 14th initial condition, described 15th initial condition any one, then triggering report to the police, and control stove area stop.
Temperature difference alarm module 2.
Temperature difference alarm module 2, comprising: the temperature difference module in the gentle region of plate, anti-wooden dipper song monitoring of tools module, Limit specifications are cold
Wooden dipper song control module.
The temperature difference module in the gentle region of plate.
The temperature difference module in the gentle region of plate has a following Rule of judgment:
Second persistent condition.
16th initial condition: as header board Wen-when proparea temperature ＞ alarming value.
17th initial condition: when header board temperature setting value-when header board temperature actual value ＞ alarming value.
18th initial condition: when proparea temperature setting value-when proparea temperature actual value ＞ alarming value.
The temperature difference module in the gentle region of plate, is used for:
Judge whether described annealing furnace meets described second persistent condition；
Judge whether described annealing furnace meets the 16th initial condition: as header board Wen-when proparea temperature ＞ alarming value；And
Judge whether described annealing furnace meets the 17th initial condition: when header board temperature setting value-as header board temperature actual value ＞
Alarming value；And
Judge whether described annealing furnace meets the 18th initial condition: when proparea temperature setting value-as proparea temperature actual value ＞
Alarming value；
If on the basis of meeting described second persistent condition, meet described 16th initial condition, the described 17th
Initial condition, described 18th initial condition any one, then trigger audio alert；Audio alert content: when forehearth area temperature
Degree is abnormal, please do shutdown and prepare！
Anti- wooden dipper song monitoring of tools module.
Anti- wooden dipper song monitoring of tools module, has a following condition:
5th persistent condition: when forehearth area is in production model.
19th initial condition: electric radiant tube power down.
Anti- wooden dipper song monitoring of tools module, is used for:
Judge whether described annealing furnace meets the 5th persistent condition: when forehearth area is in production model；And
Judge whether described annealing furnace meets the 19th initial condition: electric radiant tube power down；
If meet described 5th persistent condition and described 19th initial condition simultaneously, system voice is reported to the police, language
Sound alarm content: electric radiant tube power down, please recover！
Limit specifications cold wooden dipper song control module.
Limit specifications cold wooden dipper song control module, has a following condition:
6th persistent condition: strip steel belongs to Limit specifications.
20th initial condition: toa strip-ε>190.
Limit specifications cold wooden dipper song control module, is used for
Judge whether described annealing furnace meets the 6th persistent condition: strip steel belongs to Limit specifications；
Judge whether described annealing furnace meets the 20th initial condition: toa strip-ε>190,
If meet described 6th persistent condition and described 20th initial condition, man-machine interaction hmi interface simultaneously
Display: recommend oa section (overaging section) design temperature=190+ ε；Hmi interface: recommend cold section of design temperature=190 eventually.Specifically come
Say, annealing furnace is generally divided into preheating section, bringing-up section, soaking zone, slow cooling section, rapid cooling section, overaging section, cold section and water quenching eventually
Section.
Otherwise described hmi interface display: recommend cold section of desired temperature=max (t eventuallyfcs strip,120),tfcs strip=
toa strip-ε；Recommend cold section of design temperature=overaging section desired temperature eventually；
Wherein, tfcs strip: cold section of setting value eventually；
ε: cold section of alarm temperature setting value eventually；
toa strip: overaging section setting value.
Strip steel transition alarm module 3.
Strip steel transition alarm module 3 includes:
Specification transition alarm module, for judging whether front and back band steel specification transition sets more than the transition upper limit, if so, touches
Transmit messages police；
Temperature transition alarm module, for judging in temperature change, whether described front and back band steel specification transition is more than institute
State the transition upper limit to set, if so, then triggering is reported to the police；
Open road hot-rolling alarm module: for judging during opening stove hot-rolling, whether described front and back band steel specification transition is big
Set in the described transition upper limit, if so, then triggering is reported to the police.
Transition is rolled up due to abnormal grain growth, leads to unstable properties, when t4 (specification 0.35*950) transition volume is using 3 times
Rockwell hardness 54 (l30t), is reduced to 51 (l30t), crystallite dimension using Rockwell hardness when 14 times, sees Fig. 2.And transition is rolled up in stove
Area is susceptible to wooden dipper song, and such as sgjt1420cal3 is in December, 2013 to 2 months in 2014 transition volume wooden dipper curly hair raw up to 5
Secondary, by the research and development of warning system, temporarily the wooden dipper song leading to because of transition in January, 2016 to May.Table 2 is
The design parameter of the strip steel transition alarm module 3 of sgjt1420cal3 strip steel transition warning system: be divided into specification transition warning, temperature
Spend and cross warning and open stove hot-rolling high alarm setting.Table 3 is 1420cal3 specification transition system (thickness).
Table 2
Table 3
Acceleration alert module 4.
Acceleration alert module 4, for judging whether described annealing furnace meets the second persistent condition: 2 grades of production model, or
Described continue 2 hours >=α when forehearth area speed；And judge whether described annealing furnace meets described second initial condition: described
When forehearth area speed ＜ minimum operation speed；When described annealing furnace meets described second persistent condition and described second initial simultaneously
Condition, then triggering is reported to the police.Alarm content: stove area speed too low it is noted that！
Wooden dipper song early warning practical application example, accident 1 occurred before warning system is researched and developed, and accident 2 occurs in warning system
After research and development, the input of warning system avoids and leads to wooden dipper song broken belt accident in strip steel furnace because rapid cooling section temperature anomaly raises.
Accident 1:2015 June 21,1420cal3 annealing furnace 14:05 produces 0.17*946t4 band to stablize 500mpm
Steel, 15:42:40 finds rapid cooling section power of fan unusual fluctuations, and operative employee is intervened manually, does not find strip steel in photographic head
Abnormal, 15:43:40 overaging section loses tension force report broken belt.
Accident 2:2016 January 20,4:32 divided, and 1420cal3 stove area 1# smoke exhaust fan reports an error, error code f30021
(power cell ground connection), leads to stove area gas safety key to be closed, stove area bringing-up section cannot normal heating, operative employee starts to drop manually
Speed.4:34 enables stove area 2# smoke exhaust fan manually, can normally start.4:40 stove area rapid cooling section major loop flapper valve cuts out, bypass
Valve is opened, and rapid cooling section loses cooling capacity, and rapid cooling section temperature rises, and when temperature rises to 435 DEG C, triggers warning system, operation
Work stops (see on January 20th, Fig. 4-2016 1420cal3 rapid cooling section temperature anomaly lift curves schematic diagram) manually.
By one or more embodiment of the present invention, the invention has the advantages that or advantage: the present invention
A kind of anti-wooden dipper song warning system applied in vertical continuous annealing furnace of design, comprising: tension force alarm module 1, comprising: tension force
Modification protection module, for judging whether described annealing furnace meets the first persistent condition: as forehearth area speed >=α (α=30m/
Min～60m/min)；And judge whether described annealing furnace meets the first initial condition: present single modification amplitude limit >=1kn；When
Described annealing furnace meets described first persistent condition and described first initial condition simultaneously, then triggering is reported to the police；Temperature difference alarm module
2, for the warning of the temperature difference in the gentle region of plate, anti-wooden dipper song monitoring of tools and the bent control of the cold wooden dipper of Limit specifications；Strip steel transition report
Alert module 3, reports to the police for specification transition, and temperature transition is reported to the police and opened stove hot-rolling and reports to the police；Acceleration alert module 4, for judging
Whether described annealing furnace meets the second persistent condition: 2 grades of production model, or described continues 2 hours >=α when forehearth area speed；
And judge whether described annealing furnace meets described second initial condition: described when forehearth area speed ＜ minimum operation speed；When
Described annealing furnace meets described second persistent condition and described second initial condition simultaneously, then triggering is reported to the police.Because the present invention sets
The system of meter can be reported to the police at aspects such as temperature, tension force, and then in annealed sheet and galvanizing slab furnace process of producing product
Middle using this system, can effectively reduce and fail to find in time due to temperature, tension force exception and operative employee, process and lead to strip steel
Wooden dipper song broken belt accident in stove, improves producing line and stably leads to plate ability, is reducing enterprise cost benefit.
Although having been described for the preferred embodiment of the application, one of ordinary skilled in the art once knows substantially
Creative concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to wrap
Include preferred embodiment and fall into being had altered and changing of the application scope.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the application to the application
God and scope.So, if these modifications of the application and modification belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprise these changes and modification.
Claims (10)
1. a kind of anti-wooden dipper song warning system applied in vertical continuous annealing furnace is it is characterised in that include:
Tension force alarm module, comprising: tension force changes protection module, for judging whether described annealing furnace meets the first permanent bar
Part: as forehearth area speed >=α (α=30m/min～60m/min)；And judge whether described annealing furnace meets the first initial strip
Part: present single thousand Ns of amplitude limit >=1kn of modification；At the beginning of described annealing furnace meets described first persistent condition and described first simultaneously
Beginning condition, then triggering is reported to the police；
Temperature difference alarm module, for the warning of the temperature difference in the gentle region of plate, anti-wooden dipper song monitoring of tools and the cold wooden dipper of Limit specifications are bent
Control；
Strip steel transition alarm module, reports to the police for specification transition, and temperature transition is reported to the police and opened stove hot-rolling and reports to the police；
Acceleration alert module is for judging whether described annealing furnace meets the second persistent condition: 2 grades of production model or described
When forehearth area speed continues 2 hours >=α；And judge whether described annealing furnace meets described second initial condition: described current
Stove area speed ＜ minimum operation speed；When described annealing furnace meets described second persistent condition and described second initial strip simultaneously
Part, then triggering is reported to the police.
2. the system as claimed in claim 1, it is characterised in that described tension force modification protection module, is additionally operable to report to the police in triggering
Later, point out described annealing furnace when forehearth area speed and present single modification amplitude limit invalid, keep Yuan Lu area speed and
Former single changes amplitude limit.
3. the system as claimed in claim 1 is it is characterised in that described tension force alarm module also includes:
Tension force limits module, for controlling the warning in production model, creep mode, Manual Mode for the described annealing furnace；
Tonometer failure protection module, for controlling the warning based on current tensile measured value for the described annealing furnace.
4. system as claimed in claim 3 is it is characterised in that described tension force restriction module includes:
Production model tension force limits module, is used for:
Judge whether described annealing furnace meets the 3rd persistent condition: described as forehearth area speed >=α (α=30m/min～60m/
), and described soaking zone regional temperature ＞ β (β=460 DEG C～520 DEG C) when forehearth area min；And
Judge whether described annealing furnace meets the 3rd initial condition: the 50% of bis- grades of setting tension force of current tensile setting value ＜；With
And
Judge whether described annealing furnace meets the 4th initial condition: two grades of setting tension force described in described current tensile setting value ＞
150%；
When described annealing furnace is on the basis of meeting described 3rd persistent condition, described annealing furnace meets described 3rd initial condition
With any one in described 4th initial condition, then triggering warning；
Creep mode tension force limits module, is used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 5th initial conditions: described current car tension force setting value ＞ min is (described in min=
60%, 9mpa of two grades of setting tension force)；
When described annealing furnace meets described first persistent condition and described 5th initial conditions simultaneously, then triggering is reported to the police；
Manual Mode tension force limits module, is used for:
Judge whether described annealing furnace meets the 4th persistent condition: when forehearth area is in crawl state；And
Judge whether described annealing furnace meets the 6th initial condition: current bringing-up section tension force >=γ (γ=3～9mpa)；
Judge whether described annealing furnace meets the 7th initial condition: current soaking zone tension force >=γ；
When described annealing furnace is on the basis of meeting described 4th persistent condition, described annealing furnace meets described 6th initial condition
With any one in described 7th initial condition, then triggering warning system warning.
5. system as claimed in claim 3 is it is characterised in that described tonometer failure protection module, comprising:
Tension measurements trigger alarm module, are used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 8th initial condition: the first tonometer, arbitrary current measurement value of the second tonometer
＜ 100n, or current tensile deviation ＞ 300n；
Judge whether described annealing furnace meets the 9th initial condition: when the difference of forehearth area tension measurements and actual tension setting value
Reach the 30% of described actual tension setting value；
Judge whether described annealing furnace meets the tenth initial condition: described as bis- grades of tension force * of forehearth area tension measurements ＞
150%；
Judge whether described annealing furnace meets the 11st initial condition: described as bis- grades of tension force * of forehearth area tension measurements ＜
50%；
Judge whether described annealing furnace meets the 12nd initial condition: described first tonometer, the both sides of described second tonometer
Pressure head difference ＞ 3kn；
On the basis of described annealing furnace meets described first persistent condition, meet described 8th initial condition, at the beginning of the described 9th
Any one in beginning condition, described tenth initial condition, described 11st initial condition, described 12nd initial condition, then
Triggering is reported to the police, and alarm content is described annealing furnace when forehearth area tension force exception；
Tension measurements trigger parking module, are used for:
Judge whether described annealing furnace meets described first persistent condition；And
Judge whether described annealing furnace meets the 13rd initial condition: described when forehearth area tension measurements and described actual tension
The difference of setting value reaches the 80% of described actual tension setting value；
Judge whether described annealing furnace meets the 14th initial condition: described first tonometer, the both sides of described second tonometer
Pressure head difference, sets the 80% of tension force more than total；
Judge whether described annealing furnace meets the 15th initial condition: described first tonometer, the one side of described second tonometer
Pressure head value measured value is zero (＜ 0.1kn).
When described annealing furnace is on the basis of meeting described first persistent condition, meet described 13rd initial condition, described
14 initial condition, described 15th initial condition any one, then triggering report to the police, and control stove area stop.
6. the system as claimed in claim 1 is it is characterised in that described temperature difference alarm module, comprising:
The temperature difference module in the gentle region of plate, is used for:
Judge whether described annealing furnace meets described second persistent condition；
Judge whether described annealing furnace meets the 16th initial condition: as header board Wen-when proparea temperature ＞ alarming value；And
Judge whether described annealing furnace meets the 17th initial condition: when header board temperature setting value-report to the police as header board temperature actual value ＞
Value；And
Judge whether described annealing furnace meets the 18th initial condition: when proparea temperature setting value-report to the police as proparea temperature actual value ＞
Value；
If on the basis of meeting described second persistent condition, meet described 16th initial condition, the described 17th initial
Condition, described 18th initial condition any one, then trigger audio alert；Audio alert content: temperature is different when forehearth area
Often；
Anti- wooden dipper song monitoring of tools module, is used for:
Judge whether described annealing furnace meets the 5th persistent condition: when forehearth area is in production model；And
Judge whether described annealing furnace meets the 19th initial condition: electric radiant tube power down；
If meet described 5th persistent condition and described 19th initial condition simultaneously, system voice is reported to the police, voice reporting
Alert content: electric radiant tube power down；
Limit specifications cold wooden dipper song control module, is used for:
Judge whether described annealing furnace meets the 6th persistent condition: strip steel belongs to Limit specifications；
Judge whether described annealing furnace meets the 20th initial condition: toa strip-ε>190,
If meet described 6th persistent condition and described 20th initial condition, man-machine interaction hmi interface display simultaneously:
Recommend oa section design temperature=190+ ε；Hmi interface: recommend cold section of design temperature=190 eventually；Otherwise described hmi interface display:
Recommend cold section of desired temperature=max (t eventuallyfcs strip,120),tfcs strip=toa strip-ε；The whole cold section of design temperature of recommendation=
Overaging section desired temperature；Wherein, tfcs strip: cold section of setting value eventually；ε: cold section of alarm temperature setting value eventually；toa strip: mistake
Aging section setting value.
7. the system as claimed in claim 1 is it is characterised in that described strip steel transition alarm module includes:
Specification transition alarm module, for judging whether front and back band steel specification transition sets more than the transition upper limit, if so, triggering report
Alert；
Temperature transition alarm module, for judging in temperature change, whether described front and back band steel specification transition is more than described mistake
Cross the upper limit to set, if so, then triggering is reported to the police；
Open road hot-rolling alarm module: for judging during opening stove hot-rolling, whether described front and back band steel specification transition is more than institute
State the transition upper limit to set, if so, then triggering is reported to the police.
8. the system as claimed in claim 1, it is characterised in that described acceleration alert module, is additionally operable to send audio alert, report
Alert content: described when forehearth area speed too low.
9. system as claimed in claim 4 it is characterised in that
Described production model tension force limits module, is additionally operable to described in prompting work as forehearth area speed, the described soaking zone when forehearth area
Regional temperature, described current tensile setting value are all invalid, keep described Yuan Lu area speed, the soaking zone regional temperature in Yuan Lu area,
Initial tension setting value；
Described creep mode tension force limits module, is additionally operable to limit described current car tension force setting value=min (two grades of settings
60%, 9mpa of power)；
Described Manual Mode tension force limits module, is additionally operable to control described annealing furnace to stop crawl.
10. the system as claimed in claim 1, it is characterised in that described acceleration alert module, is additionally operable to point out stove area speed mistake
Low.
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| CN110331276A (en) * | 2019-07-17 | 2019-10-15 | 首钢京唐钢铁联合有限责任公司 | A kind of start-up method of the anti-wooden dipper song of annealing furnace |
| CN112430727A (en) * | 2020-10-15 | 2021-03-02 | 宝钢日铁汽车板有限公司 | Method and system for early warning furnace temperature of continuous annealing furnace |
| CN114921640A (en) * | 2021-12-06 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Alarm system for preventing deviation in strip steel furnace |
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| CN114921640A (en) * | 2021-12-06 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Alarm system for preventing deviation in strip steel furnace |
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