CN107326133A - Blast-furnace hot-air wind-warm syndrome monitoring method and device - Google Patents
Blast-furnace hot-air wind-warm syndrome monitoring method and device Download PDFInfo
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- CN107326133A CN107326133A CN201710684100.4A CN201710684100A CN107326133A CN 107326133 A CN107326133 A CN 107326133A CN 201710684100 A CN201710684100 A CN 201710684100A CN 107326133 A CN107326133 A CN 107326133A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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Abstract
The invention discloses a kind of blast-furnace hot-air wind-warm syndrome monitoring method and device.This method includes：Actual blast-furnace hot-air wind-warm syndrome is gathered with predeterminated frequency, the collection point of predetermined quantity is obtained；According to each actual wind-warm syndrome gathered in the collection point of predetermined quantity, the actual value of each temperature parameter is obtained；The actual value of each temperature reference is compared with corresponding threshold value, the first comparison result value is drawn if in corresponding threshold value, the second comparison result value is otherwise drawn；Comparison result value to each temperature parameter carries out comprehensive descision, obtains monitored results.The device includes：Temperature sensor, temperature collecting cell, temperature parameter computing unit, threshold value comparing unit and comprehensive descision unit.The present invention is by analyzing temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation, comprehensive descision, precise vernier adjustment foundation is provided for production operation, macro adjustments and controls foundation is provided for technical supervisor, is the ancillary technique for promoting the production of Blast Furnace Intelligent metaplasia.
Description
Technical field
The present invention relates to Blast Furnace Iron-making Production Technology field, more particularly to a kind of blast-furnace hot-air wind-warm syndrome monitoring method and dress
Put.
Background technology
Blast fumance technique is：From furnace roof load iron ore, coke, slag making flux, from lower furnace air port be blown into through
The carbon monoxide that carbon under the air of preheating, high temperature in the auxiliary fuel such as coke is generated with the oxygen burning blasted in air, in stove
The oxygen in iron ore is removed in interior uphill process, iron is obtained so as to reduce.Blast-furnace hot-air wind-warm syndrome just refers to be blown into through pre- from air port
The temperature of the air of heat, also referred to as wind pushing temperature.Under present level, actual wind-warm syndrome is that fluctuation is uneven, the constant temperature of perfect condition
Or it is impossible.Stable, accurate blast-furnace hot-air wind-warm syndrome, is to stablize one of basic condition parameter of conditions of blast furnace operation.
The China's application for entitled " the Control of hot-blast of alter-parallel blasting from stove of blast furnace temperature control " that June 13 in 1985 submits
CN85104443A, disclose it is a kind of for blast funnace hot blast stove blow staggered parallel blowing method, to equipped with three and three with
The air-supply of every hot-blast stove, is divided into three phases by the blast furnace of upper hot-blast stove：Early stage air-supply, mid-term air-supply and later stage air-supply.Often
The early stage air-supply of seat hot-blast stove is in parallel with the later stage air-supply of its leading stove, and its later stage air-supply and the early stage of row stove thereafter is blown
It is in parallel, its mid-term air-supply is the air-supply of this stove list stove, by the respective cold flow of hot-blast stove for adjusting two air-supplies in parallel
Gradually the opening of regulating valve, gradually close action to complete the temperature control of staggered parallel blowing.In the air-supply stage in parallel, it is to close that mixed wind butterfly, which is cut down,
Close, cold wind is not mixed into hot-blast main, blown the stage in single stove, the cold flow regulating valve of this hot-blast stove keeps complete
Open, and the mixed wind butterfly of opening is cut down and cold wind is mixed into hot-blast main.
Above-mentioned existing blast funnace hot blast stove temprature control method is a kind of effective ways for stablizing blast-furnace hot-air wind-warm syndrome, but should
Only by switch motion to shake the thermostatic control that method realizes hot blast in method, not to characterizing current hot blast temperature change
Parameters are detected in real time, and degree of fluctuation can not be judged when fluctuating, occur beyond temperature threshold situation also without
Method realizes prompting, and printenv foundation is unfavorable for realizing that Blast Furnace Intelligentization regulates and controls.
The content of the invention
The temperature parameter of actual blast-furnace hot-air wind-warm syndrome can be carried out accurately being judged as blast furnace the invention provides a kind of
Regulation and control provide the blast-furnace hot-air wind-warm syndrome monitoring method and device of foundation.
In order to solve the above-mentioned technical problem, the invention discloses following technical scheme：
On the one hand, a kind of blast-furnace hot-air wind-warm syndrome monitoring method is proposed.This method includes：
Actual blast-furnace hot-air wind-warm syndrome is gathered with predeterminated frequency, the collection point of predetermined quantity is obtained；
According to each the actual blast-furnace hot-air wind-warm syndrome gathered in the collection point of predetermined quantity, the reality of every temperature parameter is obtained
Actual value, every temperature parameter includes temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation；
The actual value of obtained every temperature reference is relatively obtained into comparison result value with corresponding predetermined threshold value, if
The first comparison result value for representing corresponding comparative result is then drawn in corresponding predetermined threshold value, otherwise show that expression accordingly compares knot
The second comparison result value of fruit；
The comparison result value of every temperature parameter to drawing carries out comprehensive descision, obtains blast-furnace hot-air wind-warm syndrome monitoring knot
Really.
For above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method, the collection point for obtaining predetermined quantity further comprises：Output is each
The temperature that individual collection point is gathered and collection moment corresponding relation curve.
For above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method, the actual value for obtaining every temperature parameter further comprises：Temperature
In the interval time of cycle=adjacent collection point significantly heated up, the cycle temperature difference=temperature cycle in maximum temperature-temperature cycle
Own in the average of all collecting temperatures in minimum temperature, Periodic Mean=temperature cycle, cycle median=temperature cycle
The median of collecting temperature value, periodic deviation=Periodic Mean and the absolute value of the difference of cycle median.
For above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method, the comparison result value of every temperature parameter to drawing is integrated
Judgement further comprises：The comparison result value of every temperature parameter to drawing is added up to, the numerical value according to residing for aggregate value
Scope obtains blast-furnace hot-air wind-warm syndrome monitored results.
For above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method, the first comparison result value is 1, and the second comparison result value is 0.
For above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method, when aggregate value is 5 blast-furnace hot-air wind-warm syndrome monitored results be it is normal simultaneously
And not display data, blast-furnace hot-air wind-warm syndrome monitored results are to fluctuate and show the temperature that comparison result value is 0 when aggregate value is 4-3
The actual value and predetermined threshold value of parameter are spent, blast-furnace hot-air wind-warm syndrome monitored results are abnormal when aggregate value is 2-1 and display is compared
End value is the actual value and threshold value of 0 temperature parameter, blast-furnace hot-air wind-warm syndrome when continuous abnormal pre-determined number or aggregate value are 0
Monitored results are failure and show the actual value and predetermined threshold value of each single item temperature parameter.
For above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method, blast-furnace hot-air wind-warm syndrome monitored results include normal in addition to as follows
At least one type：Fluctuation, abnormal and failure.
Above-mentioned blast-furnace hot-air wind-warm syndrome monitoring method also comprises the following steps：If blast-furnace hot-air wind-warm syndrome monitored results is just
Often, then monitoring temperature is carried out again according to current predetermined threshold value；If blast-furnace hot-air wind-warm syndrome monitored results are remaining type
Reason is searched, is found after reason according to cause type progress corresponding operating adjustment.
On the other hand, a kind of blast-furnace hot-air wind-warm syndrome supervising device is proposed.The device includes：
Temperature sensor, for measuring blast-furnace hot-air wind-warm syndrome；
Temperature collecting cell, for controlling temperature sensor 171 to gather actual blast-furnace hot-air wind-warm syndrome with predeterminated frequency, is obtained
To the collection point of predetermined quantity；
Parameter calculation unit, for according to each the actual blast-furnace hot-air wind-warm syndrome gathered in the collection point of predetermined quantity, obtaining
To the actual value of every temperature parameter, wherein, every temperature parameter include temperature cycle, the cycle temperature difference, Periodic Mean, in the cycle
Digit and periodic deviation；
Threshold value comparing unit, for the actual value of obtained every temperature parameter to be compared with corresponding predetermined threshold value respectively
Comparison result value is obtained, the first comparison result value for representing corresponding comparative result is drawn if in corresponding predetermined threshold value,
Otherwise the second comparison result value for representing corresponding comparative result is drawn；
Comprehensive descision unit, the comparison result value for every temperature parameter to drawing carries out comprehensive descision, obtains height
Stove hot blast wind-warm syndrome monitored results.
For above-mentioned blast-furnace hot-air wind-warm syndrome supervising device, temperature sensor passes through PLC interface and the industrial control microcomputer phase of blast furnace
Even, temperature collecting cell, parameter calculation unit, threshold value comparing unit and comprehensive descision unit are located on industrial control microcomputer.
1) present invention is by temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation isothermal
Degree parameter is analyzed, and is formed comprehensive descision, is provided precise vernier adjustment foundation for production operation, provided for technical supervisor grand
Regulation and control foundation is seen, is an effective ancillary technique for promoting the production of Blast Furnace Intelligent metaplasia.
2) calculated and threshold decision by the science formula of temperature parameter, obtain blast-furnace hot-air wind-warm syndrome monitored results, it is to avoid
Experiential operating, improves actual production efficiency.Present invention design is simple, reliable, suitable for blast fumance popularization and application.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes the embodiment of the present invention
A part, is intended only as example and is used for explaining the embodiment of the present invention, do not constitute the improper restriction to the embodiment of the present invention.Attached
In figure：
Fig. 1 is the blast furnace system structural representation with blast-furnace hot-air wind-warm syndrome supervising device that one embodiment of the invention is provided
Figure；
Fig. 2 is the flow chart for the blast-furnace hot-air wind-warm syndrome monitoring method that one embodiment of the invention is provided.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described corresponding accompanying drawing.Obviously, described embodiment is only the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
The (if present) such as term " first " herein, " second " be for distinguishing similar part, without for
The specific order of description or precedence.It should be appreciated that the data so used can be exchanged in the appropriate case, so as to here
The embodiments herein of description can be implemented with the order in addition to illustrating herein.
In order to meet blast furnace operating regulation and control demand, the present invention is by temperature cycle, the cycle temperature difference, Periodic Mean, cycle
Five temperature parameters of median and periodic deviation are analyzed, and can quickly form comprehensive descision, standard is provided for production operation
Really fine setting foundation, macro adjustments and controls foundation is provided for technical supervisor.
Fig. 1 is the blast furnace system structural representation with blast-furnace hot-air wind-warm syndrome supervising device that one embodiment of the invention is provided
Figure.The blast furnace system 1 includes：3 hot-blast stoves 11, the 3 hot-blast stove ajutages connected respectively with the air outlet of each hot-blast stove
Road 12, each hot-blast stove air supply duct control valve 13 being separately positioned on each hot-blast stove air supply duct 12, blast furnace 14, connection
Blast-furnace hot-air pipeline 15 between 3 hot-blast stove air supply ducts 12 and blast furnace 14, the height being arranged on blast-furnace hot-air pipeline 15
Stove hot air duct control valve 16 and blast-furnace hot-air wind-warm syndrome supervising device 17.
Blast-furnace hot-air wind-warm syndrome supervising device 17 includes temperature sensor 171, temperature collecting cell 172, temperature parameter and calculated
Unit 173, threshold value comparing unit 174 and comprehensive descision unit 175.Wherein, temperature sensor 171 is used to measure blast furnace heat
Wind wind-warm syndrome, temperature sensor 171 is, for example, hot blast temperature meter.Temperature sensor 171 can be arranged in blast-furnace hot-air pipeline 15,
Between blast-furnace hot-air pipeline control valve 16 and blast furnace 14.Temperature collecting cell 172 is used to control temperature sensor 171 with default frequency
The actual blast-furnace hot-air wind-warm syndrome of rate collection, obtains the collection point of predetermined quantity.Parameter calculation unit 173 is used for according in predetermined number
Each actual blast-furnace hot-air wind-warm syndrome of the collection point collection of amount, obtains the actual value of every temperature parameter, wherein, every temperature ginseng
Number includes temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation.Threshold value comparing unit 174 is used to incite somebody to action
To the actual value of every temperature parameter relatively obtain comparison result value with corresponding predetermined threshold value respectively, if corresponding pre-
If then drawing the first comparison result value for representing corresponding comparative result in threshold value, otherwise draw and represent the second of corresponding comparative result
Comparison result value.The comparison result value that comprehensive descision unit 175 is used for every temperature parameter to drawing carries out comprehensive descision, obtains
To blast-furnace hot-air wind-warm syndrome monitored results.
Temperature sensor 171 can be connected by PLC interface with the industrial control microcomputer of blast furnace 14.Temperature collecting cell 172, ginseng
Number computing unit 173, threshold value comparing unit 174 and comprehensive descision unit 175 can be located on the industrial control microcomputer of blast furnace 14.
Temperature collecting cell 172 is further used for the temperature pass corresponding with the collection moment that output is gathered in each collection point
It is curve.
Parameter calculation unit 173 is further used for calculating the actual value for obtaining every temperature parameter by equation below：Temperature
The interval time of cycle=adjacent collection point significantly heated up is spent, significantly heating can be the temperature difference >=10 before and after adjacent collection point
℃；The minimum temperature in maximum temperature-cycle of the cycle temperature difference=in the cycle；All collecting temperature values is flat in Periodic Mean=cycle
Mean；The median of all collecting temperature values of cycle median=in the cycle.Periodic deviation=Periodic Mean and cycle median
Difference absolute value.
The comparison result value that comprehensive descision unit 175 is further used for every temperature parameter to drawing is added up to, root
Blast-furnace hot-air wind-warm syndrome monitored results are obtained according to the number range residing for aggregate value.Assuming that the first comparison result value is 1, second compares
End value is 0, and blast-furnace hot-air wind-warm syndrome monitored results are normal and not display data when aggregate value is 5, high when aggregate value is 4-3
Stove hot blast wind-warm syndrome monitored results are the actual value and predetermined threshold value for fluctuating and showing the temperature parameter that comparison result value is 0, are closed
Blast-furnace hot-air wind-warm syndrome monitored results are exception and show the actual value for the temperature parameter that comparison result value is 0 when evaluation is 2-1
And threshold value, blast-furnace hot-air wind-warm syndrome monitored results are failure and show each when continuous abnormal pre-determined number or aggregate value are 0
The actual value and predetermined threshold value of item temperature parameter.
If it find that monitored results are " normal ", then repeat monitoring temperature according to current predetermined threshold value.If hair
Existing monitored results are that " fluctuation " then searches reason in time, are found after reason according to cause type progress respective handling.If
Accidental cause then eliminates factor, if system reason then according to actually revising rational predetermined threshold value.If it find that monitoring knot
Fruit is "abnormal", then pays close attention to monitoring interface, such as check within original 30 minutes and be once changed to check once for 5-10 minutes, as early as possible
Search reason and make corresponding operating adjustment.If it find that monitored results are " failure ", then reason is searched immediately and makes corresponding
Operation adjustment.
Fig. 2 is the flow chart for the blast-furnace hot-air wind-warm syndrome monitoring method that one embodiment of the invention is provided.As shown in Fig. 2 high
Stove hot blast wind-warm syndrome monitoring method comprises the following steps：
Step S101, actual blast-furnace hot-air wind-warm syndrome is gathered with predeterminated frequency, the collection point of predetermined quantity is obtained.Default frequency
Rate can be at least 1-2 beats/min.The detailed process of temperature acquisition is：Complete blast-furnace hot-air wind-warm syndrome online acquisition and input work
Control microcomputer, you can to use temperature sensor 171, by PLC interface, blast-furnace hot-air actual temperature value gathered by predeterminated frequency,
Blast furnace industrial control microcomputer is accessed, and draws real-time recording curve, transverse axis is that time, the longitudinal axis are temperature.Can blast furnace 14 industry control
The temperature gathered on each collection point and collection moment corresponding relation curve are exported on Interface of Computer.
Step S102, according to each the actual blast-furnace hot-air wind-warm syndrome gathered in the collection point of predetermined quantity, obtains every temperature
The actual value of parameter is spent, wherein, every temperature parameter includes temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and week
Phase deviation.Detailed process is：Actual temperature cycle, the cycle temperature difference, cycle are calculated according to the calculation formula of every temperature parameter
Average, cycle median and periodic deviation.Wherein, the actual value of temperature cycle is calculated as：During the latter collection in adjacent collection point
The time for carving latter collection moment when significantly being heated up relative to the previous collection moment is periodic knot, during the collection of adjacent collection point
The difference carved is temperature cycle value, significantly the temperature difference >=10 DEG C before and after the heating for example, two neighboring temperature acquisition moment.The cycle temperature difference
Actual value be calculated as：Take maximum temperature in temperature cycle to subtract minimum temperature in temperature cycle, be cycle temperature approach.Cycle
The actual value of average is calculated as：Average is calculated to the temperature value of all collections in temperature cycle, is Periodic Mean.In cycle
The actual value of digit is calculated as：The median of all collecting temperature values in temperature cycle is taken, if collection point in temperature cycle
For odd number then median be middle collection point collection temperature, the middle position if collection point in temperature cycle is even number
The average value for the temperature that number gathers for middle two collection points.The actual value of periodic deviation is calculated as：Take Periodic Mean and week
The absolute value of the difference of interim digit, is periodic deviation.
The formula of above-mentioned every temperature parameter calculate can using conventional office software such as Excel or Foxpro etc. or
Person other on-line monitoring and controlling softs edit calculation formula, by industrial control microcomputer complete temperature cycle, the cycle temperature difference, Periodic Mean,
The calculating of cycle median and periodic deviation.
Step S103, the actual value of obtained every temperature parameter is compared with corresponding predetermined threshold value respectively
End value, draws the first comparison result value for representing corresponding comparative result, if right if in corresponding predetermined threshold value
The second comparison result value for representing corresponding comparative result is then drawn outside the predetermined threshold value answered.
Above-mentioned comparison step can be completed by industrial control microcomputer, by setting rational predetermined threshold value, the temperature obtained to calculating
Spending cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation carries out logic judgment, and the is drawn according to judged result
One comparison result value or the second comparison result value.
It is previously set rational predetermined threshold value, including the predetermined threshold value of temperature cycle, the predetermined threshold value of the cycle temperature difference, cycle
The predetermined threshold value of the predetermined threshold value of average, the predetermined threshold value of cycle median and periodic deviation, according to actual production capacity and
Process configuration situation determines each predetermined threshold value, changes, limits the production, carries there is system reason change such as iron ore material
When any one of production and hot-blast stove failure etc. situation or a variety of situations, predetermined threshold value is adjusted in time.
Editorial logic formula, for the reality of temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation
Border calculated value carries out logic judgment respectively.If any one temperature parameter such as temperature cycle is right in this five temperature parameters
In the predetermined threshold value answered, then the first comparison result value for representing temperature parameter in corresponding predetermined threshold value is drawn, first compares
End value is such as 1.If any one temperature parameter such as temperature cycle is in corresponding default threshold in this five temperature parameters
In value, then the second comparison result value for representing temperature parameter outside corresponding predetermined threshold value is drawn, the second comparison result value is such as
For 0.
Step S104, the comparison result value of every temperature parameter to drawing carries out comprehensive descision, obtains blast-furnace hot-air wind
Warm monitored results.Detailed process is：This five respective comparison result values of parameter are added up to, according to the conjunction of comparison result value
Number range residing for evaluation obtains blast-furnace hot-air wind-warm syndrome monitored results, and monitored results include normal, fluctuation, abnormal and event
Hinder four types.
Assuming that representing that first comparison result value of the temperature parameter in corresponding predetermined threshold value is 1, represent that temperature parameter exists
The second comparison result value outside corresponding predetermined threshold value is 0.To temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and
The comparison result value of periodic deviation is added up to, and display monitoring result and data on the monitoring interface of blast furnace industrial control microcomputer.
Temperature monitoring result is normal and not display data when aggregate value is 5, when aggregate value is 4-3 temperature monitoring result be fluctuation simultaneously
Actual value and predetermined threshold value of the comparison result value for 0 temperature parameter are shown, temperature monitoring result is abnormal when aggregate value is 2-1
And show the actual value and predetermined threshold value of the temperature parameter that comparison result value is 0, continuous abnormal such as 3-5 times or aggregate value
For 0 when temperature monitoring result be failure and show five parameters actual value and predetermined threshold value.
The embodiment can also comprise the following steps：If it find that monitored results are " normal ", then preset according to current
Threshold value repeats monitoring temperature.If it find that monitored results are " fluctuation " then searches reason in time, basis after reason is found
Cause type carries out respective handling.Factor is then eliminated if accidental cause, if system reason then according to actually revising conjunction
The predetermined threshold value of reason.If it find that monitored results are "abnormal", then monitoring interface is paid close attention to, such as checks one within original 30 minutes
It is secondary to be changed to check once for 5-10 minutes, reason is searched as early as possible and makes corresponding operating adjustment.If it find that monitored results are " event
Barrier ", then search reason and make corresponding operating adjustment immediately.
The whole operation process related to the monitoring of blast-furnace hot-air wind-warm syndrome is as follows：The industrial control microcomputer related interfaces of blast furnace are opened,
Rational predetermined threshold value is set or adjusted according to actual blast fumance and Process configuration situation；Run the monitoring of blast-furnace hot-air wind-warm syndrome
Method；If it find that monitored results are " normal ", then blast-furnace hot-air wind-warm syndrome monitoring is carried out again according to current threshold value.If hair
Existing monitored results are that " fluctuation " then searches reason in time, are found after reason according to cause type progress respective handling.If
Accidental cause then eliminates factor, if system reason then according to actually revising rational predetermined threshold value.If it find that monitoring knot
Fruit is "abnormal", then pays close attention to monitoring interface, such as check within original 30 minutes and be once changed to check once for 5-10 minutes, as early as possible
Search reason and make corresponding operating adjustment.If it find that monitored results are " failure ", then reason is searched immediately and makes corresponding
Operation adjustment.
Technical scheme is further illustrated below by concrete instance.
With Laigang 1080m3Exemplified by blast furnace system, blast furnace configure three card Shandong goldentop burning type hot-air furnaces, can meet 1150 DEG C-
1250 DEG C of wind-warm syndrome requirement.
The first step, parameter acquisition.Using hot blast temperature meter, by PLC interface, by 1 beat/min of frequency collection blast furnace heat
Wind actual temperature value, accesses the industrial control microcomputer of blast furnace, and draws real-time recording curve, and transverse axis is that time, the longitudinal axis are temperature.For example
Following table 1 shows 76 temperature of 76 collection points being worth to 1 beat/min of frequency collection blast-furnace hot-air actual temperature
Value：
Table 1 is the example of one group of blast-furnace hot-air wind-warm syndrome gathered data of the invention
Second step, formula is calculated.Temperature cycle, the cycle temperature difference, Periodic Mean, cycle median are completed by industrial control microcomputer
With the calculating of periodic deviation, wherein, the interval time of temperature cycle=adjacent collection point significantly heated up, significantly heating can be
The temperature difference >=10 DEG C before and after adjacent collection point.Minimum temperature in maximum temperature-temperature cycle in the cycle temperature difference=temperature cycle.Cycle
The average of all collecting temperature values in average=temperature cycle.All collecting temperature values in cycle median=temperature cycle
Median.Periodic deviation=Periodic Mean and the absolute value of the difference of cycle median.In 76 temperature acquisition points shown in table 1
In, collection point 11 is first adjacent collection point significantly heated up, and collection point 71 is second adjacent collection point significantly heated up.
Time interval=60*1 minutes=60 minutes of temperature cycle=adjacent collection points of (71-11) *.Periodic Mean is from collection point 11
To 1202.55 DEG C of the average value of 60 temperature values of 60 collection point collections between collection point 71.The cycle temperature difference is from collection point
11 into 60 temperature values of 60 collection points collection between collection point 71 maximum temperature and minimum temperature 49.2 DEG C of difference.Cycle
Median is 60 temperature values centre, two Hes of collection point 40 from collection point 11 to 60 collection point collections collection point 71
1202 DEG C of the average value of 41 temperature value.Periodic deviation is Periodic Mean and 0.55 DEG C of the absolute value of the difference of cycle median.
3rd step, function judges.Rational predetermined threshold value is set, to calculating obtained actual temperature cycle, cycle temperature
Difference, Periodic Mean, cycle median and periodic deviation carry out logic judgment, defeated under industrial control microcomputer hot blast wind-warm syndrome curve interface
Go out comparison result value.Temperature cycle, the cycle temperature difference, Periodic Mean, the actual calculated value difference of cycle median and periodic deviation
Made comparisons with corresponding predetermined threshold value, comparison result value is 1 if in corresponding threshold value, if outside corresponding threshold value
Comparison result value is 0.Wherein, reasonable threshold value, including temperature are preset according to actual production capacity and Process configuration situation
Ct value, cycle temperature difference threshold, Periodic Mean threshold value, cycle median threshold value and periodic deviation threshold value.For example, for table 1
Example, the threshold value in preset temperature cycle is 58-62 minute, and the threshold value of Periodic Mean is 1200 DEG C -1205 DEG C, the cycle temperature difference
Threshold value is 45 DEG C -55 DEG C, and the threshold value of cycle median is 1185 DEG C -1215 DEG C, and the threshold value of periodic deviation is 0 DEG C -2 DEG C.Because
The actual value 60 minutes of temperature cycle is in threshold value 58-62 minutes of temperature cycle, so the comparison result value of temperature cycle is
1.Because 1202.55 DEG C of the actual value of Periodic Mean is in 1200 DEG C -1205 DEG C of the threshold value of Periodic Mean, Periodic Mean
Comparison result value is 1.Because 49.2 DEG C of the actual value of the cycle temperature difference is in 45 DEG C -55 DEG C of the threshold value of the cycle temperature difference, the cycle
The comparison result value of the temperature difference is 1.Because 1185 DEG C -1215 of the threshold value of 1202 DEG C of the actual value of cycle median digit in the cycle
In DEG C, so the comparison result value of cycle median is 1.Because 0.55 DEG C of threshold value in periodic deviation of actual value of periodic deviation
In 0 DEG C -2 DEG C, so the comparison result value of periodic deviation is 1.
4th step, obtains temperature monitoring result.Comparison result value to five temperature parameters is added up to.Aggregate value is 5
When, export " normal " and no data shows that the aggregate value of the comparison result value of five temperature parameters is 5 in the example of table 1.
When aggregate value is 4-3, exports " fluctuation " and show the actual value and threshold value of the temperature parameter that comparison result value is 0.Aggregate value
During for 2-1, export "abnormal" and show the actual value and threshold value of the temperature parameter that comparison result value is 0.Continuous appearance is " different
Often " such as 3-5 times when or aggregate value be 0 when, export " failure " and show five temperature parameters actual value and threshold value.
In fact, blast-furnace hot-air wind-warm syndrome is changed from high to low with certain temperature cycle, next cycle temperature it is same from
High to Low change, moves in circles.If it find that monitoring temperature result then searches reason in time for fluctuation, exception or failure, search
Reason if it find that system reason change such as iron ore material change, limit the production, putting forward production, hot-blast stove failure etc., to adjust in time
The threshold value of temperature parameter.Such as because iron ore material change causes the actual value of temperature cycle to diminish, if it is pre- less than original
If temperature cycle threshold value, then operating personnel are according to the monitoring temperature result of output and the actual value and threshold of the temperature cycle of display
Value searches the reason for temperature cycle is fluctuated, and then finds that iron ore material changes, at this moment resets temperature cycle
Threshold value, blast-furnace hot-air wind-warm syndrome monitoring is then carried out again.
The whole operation process related to the monitoring of blast-furnace hot-air wind-warm syndrome is as follows：Open blast furnace industrial control microcomputer related interfaces, root
Factually border blast fumance and Process configuration situation set or adjusted rational predetermined threshold value；Run blast-furnace hot-air wind-warm syndrome monitoring side
Method；If it find that monitored results are " fluctuation " then searches reason in time, find after reason according to cause type progress corresponding position
Reason.Factor is then eliminated if accidental cause, if system reason then according to actually revising reasonable threshold value.If it find that monitoring
As a result it is "abnormal", then pays close attention to monitoring interface, such as check within original 30 minutes and be once changed to check once for 5-10 minutes, to the greatest extent
It is fast to search reason and make corresponding operating adjustment.If it find that monitored results are " failure ", then reason is searched immediately and phase is made
Answer operation adjustment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of blast-furnace hot-air wind-warm syndrome monitoring method, it is characterised in that this method includes：
Actual blast-furnace hot-air wind-warm syndrome is gathered with predeterminated frequency, the collection point of predetermined quantity is obtained；
According to each the actual blast-furnace hot-air wind-warm syndrome gathered in the collection point of predetermined quantity, the reality of every temperature parameter is obtained
Value, every temperature parameter includes temperature cycle, the cycle temperature difference, Periodic Mean, cycle median and periodic deviation；
The actual value of obtained every temperature reference is relatively obtained into comparison result value with corresponding predetermined threshold value, if in correspondence
Predetermined threshold value in then draw the first comparison result value for representing corresponding comparative result, otherwise draw and represent corresponding comparative result
Second comparison result value；
The comparison result value of every temperature parameter to drawing carries out comprehensive descision, obtains blast-furnace hot-air wind-warm syndrome monitored results.
2. blast-furnace hot-air wind-warm syndrome monitoring method according to claim 1, it is characterised in that obtain the collection point of predetermined quantity
Further comprise：Export the temperature gathered in each collection point and collection moment corresponding relation curve.
3. blast-furnace hot-air wind-warm syndrome monitoring method according to claim 1, it is characterised in that obtain the reality of every temperature parameter
Actual value further comprises：In the interval time of temperature cycle=adjacent collection point significantly heated up, the cycle temperature difference=temperature cycle
The average of all collecting temperatures, cycle middle position in minimum temperature in maximum temperature-temperature cycle, Periodic Mean=temperature cycle
The median of all collecting temperature values in number=temperature cycle, periodic deviation=Periodic Mean is exhausted with the difference of cycle median
To value.
4. blast-furnace hot-air wind-warm syndrome monitoring method according to claim 1, it is characterised in that to the every temperature parameter drawn
Comparison result value carry out comprehensive descision further comprise：The comparison result value of every temperature parameter to drawing is added up to,
Number range according to residing for aggregate value obtains blast-furnace hot-air wind-warm syndrome monitored results.
5. blast-furnace hot-air wind-warm syndrome monitoring method according to claim 4, it is characterised in that the first comparison result value is 1, the
Two comparison result values are 0.
6. blast-furnace hot-air wind-warm syndrome monitoring method according to claim 5, it is characterised in that blast-furnace hot-air when aggregate value is 5
Wind-warm syndrome monitored results are normal and not display data, when aggregate value is 4-3 blast-furnace hot-air wind-warm syndrome monitored results be fluctuation and
Actual value and predetermined threshold value of the comparison result value for 0 temperature parameter are shown, blast-furnace hot-air wind-warm syndrome monitoring knot when aggregate value is 2-1
Fruit is exception and shows the actual value and threshold value of the temperature parameter that comparison result value is 0, continuous abnormal pre-determined number or conjunction
Blast-furnace hot-air wind-warm syndrome monitored results are failure and show the actual value and predetermined threshold value of each single item temperature parameter when evaluation is 0.
7. the blast-furnace hot-air wind-warm syndrome monitoring method according to claim 1 or 4, it is characterised in that blast-furnace hot-air wind-warm syndrome is monitored
As a result include normally, in addition to following at least one type：Fluctuation, abnormal and failure.
8. blast-furnace hot-air wind-warm syndrome monitoring method according to claim 7, it is characterised in that also including step：If blast furnace
Hot blast wind-warm syndrome monitored results are normal, then carry out monitoring temperature again according to current predetermined threshold value；If blast-furnace hot-air wind-warm syndrome
Monitored results are that remaining type then searches reason, are found after reason according to cause type progress corresponding operating adjustment.
9. a kind of blast-furnace hot-air wind-warm syndrome supervising device, it is characterised in that including：
Temperature sensor (171), for measuring blast-furnace hot-air wind-warm syndrome；
Temperature collecting cell (172), for controlling temperature sensor (171) to gather actual blast-furnace hot-air wind with predeterminated frequency
Temperature, obtains the collection point of predetermined quantity；
Parameter calculation unit (173), for according to each the actual blast-furnace hot-air wind-warm syndrome gathered in the collection point of predetermined quantity, obtaining
To the actual value of every temperature parameter, wherein, every temperature parameter include temperature cycle, the cycle temperature difference, Periodic Mean, in the cycle
Digit and periodic deviation；
Threshold value comparing unit (174), for by the actual value of obtained every temperature parameter respectively with corresponding predetermined threshold value ratio
Comparison result value is relatively obtained, the first comparative result for representing corresponding comparative result is drawn if in corresponding predetermined threshold value
Value, otherwise draws the second comparison result value for representing corresponding comparative result；
Comprehensive descision unit (175), the comparison result value for every temperature parameter to drawing carries out comprehensive descision, obtains height
Stove hot blast wind-warm syndrome monitored results.
10. blast-furnace hot-air wind-warm syndrome supervising device according to claim 9, it is characterised in that temperature sensor (171) passes through
PLC interface is connected with the industrial control microcomputer of blast furnace, temperature collecting cell (172), parameter calculation unit (173), threshold value comparing unit
(174) it is located at comprehensive descision unit (175) on industrial control microcomputer.
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