CN109943704B - Method and device for diagnosing buckling of strip steel in vertical annealing furnace - Google Patents
Method and device for diagnosing buckling of strip steel in vertical annealing furnace Download PDFInfo
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- CN109943704B CN109943704B CN201910292579.6A CN201910292579A CN109943704B CN 109943704 B CN109943704 B CN 109943704B CN 201910292579 A CN201910292579 A CN 201910292579A CN 109943704 B CN109943704 B CN 109943704B
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Abstract
The invention provides a method and a device for diagnosing buckling of strip steel in a vertical annealing furnace, which are characterized in that tension set values and tension actual values of all regions in the furnace are obtained; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not; and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount. The technical problems that due to the fact that the buckling phenomenon is monitored manually, operators neglect to find out that the buckling of the band steel in the furnace is not timely caused, the optimal remediation opportunity is missed, and the buckling of the band steel is aggravated are solved, whether the buckling of the band steel in the furnace occurs or not is judged by monitoring the real-time data of the band steel in the furnace, the diagnosis information is transmitted to the operators in real time, the optimal remediation opportunity is mastered, and the band steel buckling is reduced are solved.
Description
Technical Field
The invention relates to the technical field of cold rolling, in particular to a method and a device for diagnosing buckling of strip steel in a vertical annealing furnace.
Background
The vertical annealing furnace mainly comprises a preheating section, a heating section, a soaking section, a slow cooling section, an overaging section and a final cooling section, and the main process flow is as follows: the method comprises the steps that the strip steel is heated to 80-300 ℃ in a preheating section through the temperature of waste gas generated by recycling and heating in a soaking section, the strip steel is heated to the temperature required by annealing in a radiation heating mode in the heating and soaking section, then the strip steel is cooled to the target temperature required by overaging through a slow cooling section and a fast cooling section, then the strip steel enters an overaging section to be subjected to overaging, and finally the strip steel is cooled to the temperature below 200 ℃ through a final cooling section. The buckling is the phenomenon that the transverse compression of the strip steel is unstable and the surface of the strip steel is wrinkled due to the abnormal factors such as tension, temperature, speed, furnace roller thermal convexity and the like along with the continuous heating and cooling of the strip steel in a furnace. In order to prevent the oxidation of the strip steel, the furnace is filled with nitrogen protective gas, and a small amount of hydrogen is additionally matched to ensure that the furnace is in a reducing atmosphere. In order to ensure the air tightness in the furnace, the annealing furnace is a closed black box, and operators in the furnace area need to know the surface state of the strip steel through an industrial television monitoring picture.
The applicant has found that the above prior art has at least the following technical problems:
in the prior art, the buckling phenomenon is manually monitored, so that the technical problem that the optimal remedy opportunity is missed because an operator neglects not to find the buckling of the strip steel in the furnace in time, and the buckling of the strip steel in the furnace is aggravated to cause production accidents exists.
Disclosure of Invention
The embodiment of the invention provides a method and a device for diagnosing buckling of band steel in a vertical annealing furnace, which solve the technical problems that in the prior art, due to manual monitoring of the buckling phenomenon, an operator neglects not to find out the buckling of the band steel in the furnace in time, so that the optimal remedy opportunity is missed, and the buckling of the band steel in the furnace is aggravated.
In view of the above problems, embodiments of the present application are proposed to provide a method and an apparatus for diagnosing buckling of a strip in a vertical annealing furnace.
In a first aspect, the invention provides a method for diagnosing buckling of a strip steel in a vertical annealing furnace, which comprises the following steps: acquiring tension set values of all areas in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not; and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount.
Preferably, the obtaining the fluctuation amount of the tension in each region in the furnace according to the tension set value of each region in the furnace and the tension actual value of each region in the furnace includes: according to the formula Δ Ti＝Ti-act-Ti-setObtaining a tension fluctuation curve of each area in the furnace; wherein, Ti-actThe actual value of the strip steel tension in the ith area of the annealing furnace, Ti-setSet value of strip tension, delta T, for the i-th zone of the annealing furnaceiThe actual tension fluctuation value of the strip steel in the ith area of the annealing furnace is shown, the tension fluctuation curve of each area in the furnace is a curve formed by the tension fluctuation values obtained at each moment in the corresponding area, i is the ith area of the annealing furnace, and i is a positive integer of 1-7; obtaining the maximum tension fluctuation value and the minimum tension fluctuation value of each area in the furnace according to the tension fluctuation curve; and obtaining the tension fluctuation amount according to the maximum tension fluctuation value and the minimum tension fluctuation value.
Preferably, the determining whether the amount of tension fluctuation in each region in the furnace satisfies a set threshold includes: when the amount of the tension fluctuation satisfies the formula (max Δ T)i-minΔTi)≥k1*Ti-setIf so, the tension fluctuation quantity meets a set threshold value; wherein, max Δ TiIs the maximum tension fluctuation value, min Δ TiTo said minimum tension fluctuation value, Ti-setSet value of strip tension, k, for the i-th zone of the annealing furnace1Is a tension fluctuation critical value.
Preferably, said k is110 to 20 percent.
Preferably, the method further comprises: obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position; judging whether the first deviation amount and the first deviation correction amount meet a first preset condition or not, and obtaining a first position corresponding to the strip steel when the first deviation amount and the first deviation correction amount meet the first preset condition; obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace; judging whether the second deviation amount and the second deviation amount meet the second preset condition or not, and obtaining a second position corresponding to the strip steel when the second deviation amount and the second deviation amount meet the second preset condition; and judging whether the first position is the same as the second position, if so, sending second buckling information, wherein the second buckling information is the buckling of the strip steel in the furnace.
Preferably, the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm.
Preferably, the second predetermined condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
In a second aspect, the invention provides a device for diagnosing buckling of a strip steel in a vertical annealing furnace, which comprises:
a first obtaining unit, which is used for obtaining tension set values of all areas in the furnace;
a second obtaining unit, configured to obtain actual tension values of each zone in the furnace;
a third obtaining unit, configured to obtain a tension fluctuation amount of each region in the furnace according to a tension set value of each region in the furnace and a tension actual value of each region in the furnace;
a first determination unit configured to determine whether the amount of tension fluctuation in each region in the furnace satisfies a set threshold;
and the first sending unit is used for sending first buckling information when the tension fluctuation amount meets the set threshold value, wherein the first buckling information is buckling of band steel in the furnace region corresponding to the tension fluctuation amount.
Preferably, the apparatus further comprises:
a fourth obtaining unit for obtaining Δ T according to the formulai＝Ti-act-Ti-setObtaining a tension fluctuation curve of each area in the furnace;
wherein, Ti-actThe actual value of the strip steel tension in the ith area of the annealing furnace, Ti-setSet value of strip tension, delta T, for the i-th zone of the annealing furnaceiThe actual tension fluctuation value of the strip steel in the ith area of the annealing furnace is shown, the tension fluctuation curve of each area in the furnace is a curve formed by the tension fluctuation values obtained at each moment in the corresponding area, i is the ith area of the annealing furnace, and i is a positive integer of 1-7;
a fifth obtaining unit, configured to obtain a maximum tension fluctuation value and a minimum tension fluctuation value of each zone in the furnace according to the tension fluctuation curve;
a sixth obtaining unit, configured to obtain the tension fluctuation amount according to the maximum tension fluctuation value and the minimum tension fluctuation value.
Preferably, the apparatus further comprises:
a first execution unit for executing a first execution when the amount of the tension fluctuation satisfies a formula (max Δ T)i-minΔTi)≥k1*Ti-setIf so, the tension fluctuation quantity meets a set threshold value;
wherein, max Δ TiIs the maximum tension fluctuation value, min Δ TiTo said minimum tension fluctuation value, Ti-setSet value of strip tension, k, for the i-th zone of the annealing furnace1Is a tension fluctuation critical value.
Preferably, said k is110 to 20 percent.
Preferably, the apparatus further comprises:
the seventh obtaining unit is used for obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position;
the second judging unit is used for judging whether the first deviation amount and the first deviation correcting amount meet a first preset condition or not, and acquiring a first position corresponding to the strip steel when the first deviation amount and the first deviation correcting amount meet the first preset condition;
the eighth obtaining unit is used for obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace;
the third judging unit is used for judging whether the second deviation amount and the second deviation correcting amount meet the second preset condition or not, and when the second deviation amount and the second deviation correcting amount meet the second preset condition, a second position corresponding to the strip steel is obtained;
and the fourth judging unit is used for judging whether the first position is the same as the second position or not, and sending second buckling information if the first position is the same as the second position, wherein the second buckling information is that the band steel in the furnace buckles.
Preferably, the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm.
Preferably, the second predetermined condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
In a third aspect, the invention provides a device for diagnosing buckling of strip steel in a vertical annealing furnace, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the following steps: acquiring tension set values of all areas in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not; and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount.
In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of: acquiring tension set values of all areas in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not; and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
according to the method and the device for diagnosing buckling of the strip steel in the vertical annealing furnace, provided by the embodiment of the invention, the tension set values of all areas in the furnace are obtained by monitoring the tension data of the strip steel in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not according to the tension fluctuation amount; when the tension fluctuation quantity of the corresponding area in the furnace meets the set threshold value, buckling of the strip steel of the corresponding area in the furnace is judged, first buckling information is sent to an operator in real time, and the first buckling information is buckling of the strip steel in the area in the furnace corresponding to the tension fluctuation quantity. The technical effects of judging whether the buckling of the strip steel in the furnace occurs or not by monitoring the real-time data of the strip steel in the furnace, finding out in time, transmitting the diagnosis information to an operator in real time, mastering the best remedy opportunity and reducing the buckling of the strip steel are achieved. Therefore, the technical problems that in the prior art, due to manual monitoring of the buckling phenomenon, an operator neglects to find the buckling of the strip steel in the furnace in time, the optimal remedy opportunity is missed, and the buckling of the strip steel in the furnace is aggravated are solved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic flow chart of a method for diagnosing buckling of a strip steel in a vertical annealing furnace according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for diagnosing buckling of a strip steel in a vertical annealing furnace according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a device for diagnosing buckling of a strip steel in a vertical annealing furnace according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another apparatus for diagnosing buckling of a strip in a vertical annealing furnace according to an embodiment of the present invention.
Description of reference numerals: a first obtaining unit 11, a second obtaining unit 12, a third obtaining unit 13, a first judging unit 14, a first transmitting unit 15, a bus 300, a receiver 301, a processor 302, a transmitter 303, a memory 304, and a bus interface 306.
Detailed Description
The embodiment of the invention provides a method and a device for diagnosing buckling of band steel in a vertical annealing furnace, which are used for solving the technical problems that in the prior art, due to manual monitoring of the buckling phenomenon, an operator neglects not to find out the buckling of the band steel in the furnace in time, so that the optimal remedy opportunity is missed, and the buckling of the band steel in the furnace is aggravated.
The technical scheme provided by the invention has the following general idea:
acquiring tension set values of all areas in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not; and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount. The technical effects of judging whether the buckling of the strip steel in the furnace occurs or not by monitoring the real-time data of the strip steel in the furnace, finding out in time, transmitting the diagnosis information to an operator in real time, mastering the best remedy opportunity and reducing the buckling of the strip steel are achieved.
The technical solutions of the present invention are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present invention are described in detail in the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Example one
FIG. 1 is a schematic flow chart of a method for diagnosing buckling of a strip steel in a vertical annealing furnace according to an embodiment of the present invention. The embodiment of the invention provides a method for diagnosing buckling of a strip steel in a vertical annealing furnace, which comprises the following steps of:
step 110: and obtaining tension set values of all the areas in the furnace.
Step 120: and acquiring the actual tension value of each area in the furnace.
Step 130: and obtaining the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace.
Further, the obtaining a fluctuation amount of the tension of each region in the furnace according to the tension set value of each region in the furnace and the tension actual value of each region in the furnace includes: according to the formula Δ Ti＝Ti-act-Ti-setObtaining a tension fluctuation curve of each area in the furnace; wherein, Ti-actThe actual value of the strip steel tension in the ith area of the annealing furnace, Ti-setSet value of strip tension, delta T, for the i-th zone of the annealing furnaceiThe actual tension fluctuation value of the strip steel in the ith area of the annealing furnace is shown, the tension fluctuation curve of each area in the furnace is a curve formed by the tension fluctuation values obtained at each moment in the corresponding area, i is the ith area of the annealing furnace, and i is a positive integer of 1-7; obtaining the areas in the furnace according to the tension fluctuation curveThe maximum tension fluctuation value and the minimum tension fluctuation value of the tension sensor; and obtaining the tension fluctuation amount according to the maximum tension fluctuation value and the minimum tension fluctuation value.
Step 140: and judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value.
Further, the determining whether the amount of tension fluctuation in each region in the furnace satisfies a set threshold includes: when the amount of the tension fluctuation satisfies the formula (max Δ T)i-minΔTi)≥k1*Ti-setIf so, the tension fluctuation quantity meets a set threshold value; wherein, max Δ TiIs the maximum tension fluctuation value, min Δ TiTo said minimum tension fluctuation value, Ti-setSet value of strip tension, k, for the i-th zone of the annealing furnace1Is a tension fluctuation critical value.
Step 150: and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount.
Specifically, the method for diagnosing the buckling of the strip steel in the vertical annealing furnace mainly comprises two strategies, namely tension diagnosis and deviation correction diagnosis. For the strategy of tension diagnosis, the tension of each area in the vertical annealing furnace is monitored, whether the steady-state tension presents abnormal periodic oscillation or not is analyzed, and a tension fluctuation value curve is analyzed, if the steady-state tension fluctuation value is more than or equal to k1The tension set value is used for judging that the buckling of the strip steel corresponding to the tension fluctuation in the furnace occurs, as shown in figure 2, the tension value of each zone in the furnace is T, the tension value is T0, and the value is calculated according to a formula delta Ti＝Ti-act-Ti-setWherein T isi-act: actual value of strip steel tension T in ith area of annealing furnacei-set: tension set value, delta T, of strip steel in ith area of annealing furnacei: the relative fluctuation value of the actual tension of the strip steel in the ith area of the annealing furnace, i: the annealing furnace has an i-th zone, where (i ═ 1 preheating zone; ═ 2 heating zone; ═ 3 soaking zone; ═ 4 annealing zone;,: 5 rapid cooling zone;: 6 overaging zone;: 7 final cooling zone), k1: critical of tension fluctuationTaking the value of 10-20%. A plurality of tension fluctuation values of each area in the furnace are obtained by using a formula, the maximum tension fluctuation value and the minimum tension fluctuation value in a fluctuation curve formed by the tension fluctuation values in each area are selected, if the maximum tension fluctuation value-the minimum tension fluctuation value is greater than or equal to (10-20%) T0, the buckling of the strip steel in the ith area is judged, namely the buckling of the strip steel in the furnace in the corresponding area is judged, the buckling information is automatically sent to an operator in real time for timely remedy, and the production accident caused by serious buckling is avoided, so that the technical problems that the buckling of the strip steel in the furnace is not timely found by the operator due to manual monitoring, the optimal opportunity for remedy is missed, and the buckling of the strip steel in the furnace is aggravated in the prior art are solved.
Further, the method further comprises: obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position; judging whether the first deviation amount and the first deviation correction amount meet a first preset condition or not, and obtaining a first position corresponding to the strip steel when the first deviation amount and the first deviation correction amount meet the first preset condition; obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace; judging whether the second deviation amount and the second deviation amount meet the second preset condition or not, and obtaining a second position corresponding to the strip steel when the second deviation amount and the second deviation amount meet the second preset condition; and judging whether the first position is the same as the second position, if so, sending second buckling information, wherein the second buckling information is the buckling of the strip steel in the furnace.
Further, the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm.
Further, the second preset condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
Specifically, the deviation-correcting diagnosis strategy is a strategy for carrying out specific diagnosis according to the deviation-correcting quantity of the strip steel, namely simply arranging the strip steel according to whether the strip steel generates abnormal deviation at an inlet loopExcept for the influence of the camber, the camber refers to the maximum distance between the side edges of the steel plate and the steel strip and a straight line connecting two end points of the measuring part, namely the deviation of the edge of one side of the steel strip and the straight line, after the influence of the camber is rejected, whether the steel strip is abnormally deviated is judged according to the deviation curve of the steel strip in the furnace, if the abnormal deviation position of the steel strip in the inlet loop and the furnace area does not accord with each other, the steel strip at the abnormal deviation position of the steel strip in the furnace is judged to be buckled. As shown in fig. 2, when using the deskew diagnostic strategy, the sickle position is first marked: the deviation amount and the deviation correcting amount of the strip steel at the inlet loop meet the following equation (1):
judging that the strip steel is abnormally deviated, recording the position of the strip steel as epsilon, and storing the position in a database M. Wherein l0-ε: the deviation of the strip steel from a belt head epsilon at the position of the inlet loop deviation rectifying roller is mm; m is0-ε: the distance between the strip steel and a strip head is epsilon, and the deviation correction quantity at the inlet loop deviation correction roller is percent; epsilon: the strip steel position is more than or equal to 0 and less than or equal to l (wherein, 0 represents the strip steel head, and l represents the strip steel tail position); m: all the epsilon sets, k satisfying equation (1)2: taking 70-90% of the deviation correcting amount of the deviation correcting roller corresponding to the abnormal deviation of the strip steel; k is a radical of3: the abnormal deviation of the strip steel is equal to or more than 10 mm. Then, calibrating an abnormal deviation position in the strip steel furnace, wherein the deviation amount and the deviation correcting amount of the strip steel in the annealing furnace meet the following equation (2):
judging that the strip steel deviates to be abnormal deviation, and recording the strip steel position x as xiWherein l isx-i: the deviation of the strip steel from a strip head x at the i-th area of the annealing furnace is mm; m isx-i: deviation correction amount of the strip steel at the i-th area of the annealing furnace is up to x percent from the strip head; x is the number ofi: the strip steel position is more than or equal to 0 and less than or equal to l, wherein x is 0 and represents the strip steel head position and l is the strip steel tail position; n: all x satisfying equation (2)iSet when the position of epsilon and xiWhen the position of (D) is the same position, it indicates that the bending occurs at the position, i.e. M # N, and when both are satisfied, the position occursThe buckling information is sent to an operator in real time through the system, the automation degree is high, the operator can carry out timely remediation according to timely information, buckling aggravation is avoided, and timeliness and accuracy are high. Therefore, the technical problems that in the prior art, due to manual monitoring of the buckling phenomenon, an operator neglects to find the buckling of the strip steel in the furnace in time, the optimal remedy opportunity is missed, and the buckling of the strip steel in the furnace is aggravated are solved. In addition, the tension diagnosis and deviation rectification diagnosis strategy can be used by combining with the combination characteristics, and can also be used by controlling the unit by both strategies, for example, for 1700 continuous annealing furnaces of the A steel company, the A steel company guides the operators to find out the buckling of the strip steel in the furnace in real time through the data monitored by the system from the two aspects of the tension fluctuation quantity and the abnormal deviation, so that the good effect is achieved, and the occurrence of the buckling phenomenon of the strip steel in the furnace is reduced.
Example two
Based on the same inventive concept as the method for diagnosing buckling of the strip steel in the vertical annealing furnace in the previous embodiment, the invention also provides a device for diagnosing buckling of the strip steel in the vertical annealing furnace, as shown in fig. 3, the device comprises:
a first obtaining unit 11, wherein the first obtaining unit 11 is used for obtaining tension set values of each area in the furnace;
a second obtaining unit 12, wherein the second obtaining unit 12 is used for obtaining tension actual values of each area in the furnace;
a third obtaining unit 13, wherein the third obtaining unit 13 is configured to obtain a tension fluctuation amount of each region in the furnace according to a tension set value of each region in the furnace and a tension actual value of each region in the furnace;
a first determination unit 14, wherein the first determination unit 14 is configured to determine whether the amount of tension fluctuation of each region in the furnace satisfies a set threshold;
and the first sending unit 15 is configured to send first buckling information when the tension fluctuation amount satisfies the set threshold, where the first buckling information is buckling of band steel in an area in the furnace corresponding to the tension fluctuation amount.
Further, the apparatus further comprises:
further, the apparatus further comprises:
a fourth obtaining unit for obtaining Δ T according to the formulai＝Ti-act-Ti-setObtaining a tension fluctuation curve of each area in the furnace;
wherein, Ti-actThe actual value of the strip steel tension in the ith area of the annealing furnace, Ti-setSet value of strip tension, delta T, for the i-th zone of the annealing furnaceiThe actual tension fluctuation value of the strip steel in the ith area of the annealing furnace is shown, the tension fluctuation curve of each area in the furnace is a curve formed by the tension fluctuation values obtained at each moment in the corresponding area, i is the ith area of the annealing furnace, and i is a positive integer of 1-7;
a fifth obtaining unit, configured to obtain a maximum tension fluctuation value and a minimum tension fluctuation value of each zone in the furnace according to the tension fluctuation curve;
a sixth obtaining unit, configured to obtain the tension fluctuation amount according to the maximum tension fluctuation value and the minimum tension fluctuation value.
Further, the apparatus further comprises:
a first execution unit for executing a first execution when the amount of the tension fluctuation satisfies a formula (max Δ T)i-minΔTi)≥k1*Ti-setIf so, the tension fluctuation quantity meets a set threshold value;
wherein, max Δ TiIs the maximum tension fluctuation value, min Δ TiTo said minimum tension fluctuation value, Ti-setSet value of strip tension, k, for the i-th zone of the annealing furnace1Is a tension fluctuation critical value.
Further, k is110 to 20 percent.
Further, the apparatus further comprises:
the seventh obtaining unit is used for obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position;
the second judging unit is used for judging whether the first deviation amount and the first deviation correcting amount meet a first preset condition or not, and acquiring a first position corresponding to the strip steel when the first deviation amount and the first deviation correcting amount meet the first preset condition;
the eighth obtaining unit is used for obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace;
the third judging unit is used for judging whether the second deviation amount and the second deviation correcting amount meet the second preset condition or not, and when the second deviation amount and the second deviation correcting amount meet the second preset condition, a second position corresponding to the strip steel is obtained;
and the fourth judging unit is used for judging whether the first position is the same as the second position or not, and sending second buckling information if the first position is the same as the second position, wherein the second buckling information is that the band steel in the furnace buckles.
Further, the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm.
Further, the second preset condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
Various changes and specific examples of the method for diagnosing buckling of a strip in a vertical annealing furnace in the first embodiment of fig. 1 are also applicable to the device for diagnosing buckling of a strip in a vertical annealing furnace in the present embodiment, and through the foregoing detailed description of the method for diagnosing buckling of a strip in a vertical annealing furnace, those skilled in the art can clearly know the method for implementing the device for diagnosing buckling of a strip in a vertical annealing furnace in the present embodiment, so that for the sake of brevity of the description, detailed description is omitted here.
EXAMPLE III
Based on the same inventive concept as the method for diagnosing buckling of strip steel in the vertical annealing furnace in the previous embodiment, the invention also provides a device for diagnosing buckling of strip steel in the vertical annealing furnace, which is stored with a computer program, and the computer program realizes the steps of any one of the methods for diagnosing buckling of strip steel in the vertical annealing furnace when being executed by a processor.
Where in fig. 4 a bus architecture (represented by bus 300), bus 300 may include any number of interconnected buses and bridges, bus 300 linking together various circuits including one or more processors, represented by processor 302, and memory, represented by memory 304. The bus 300 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 306 provides an interface between the bus 300 and the receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
The processor 302 is responsible for managing the bus 300 and general processing, and the memory 304 may be used for storing data used by the processor 302 in performing operations.
Example four
Based on the same inventive concept as the method for diagnosing buckling of a strip steel in a vertical annealing furnace in the foregoing embodiment, the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, realizes the steps of:
acquiring tension set values of all areas in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not; and when the tension fluctuation amount meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of the band steel in the furnace region corresponding to the tension fluctuation amount.
In a specific implementation, when the program is executed by a processor, any method step in the first embodiment may be further implemented.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
according to the method and the device for diagnosing buckling of the strip steel in the vertical annealing furnace, provided by the embodiment of the invention, the tension set values of all areas in the furnace are obtained by monitoring the tension data of the strip steel in the furnace; acquiring actual tension values of all areas in the furnace; acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace; judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not according to the tension fluctuation amount; when the tension fluctuation quantity of the corresponding area in the furnace meets the set threshold value, buckling of the strip steel of the corresponding area in the furnace is judged, first buckling information is sent to an operator in real time, and the first buckling information is buckling of the strip steel in the area in the furnace corresponding to the tension fluctuation quantity. The technical effects of judging whether the buckling of the strip steel in the furnace occurs or not by monitoring the real-time data of the strip steel in the furnace, finding out in time, transmitting the diagnosis information to an operator in real time, mastering the best remedy opportunity and reducing the buckling of the strip steel are achieved. Therefore, the technical problems that in the prior art, due to manual monitoring of the buckling phenomenon, an operator neglects to find the buckling of the strip steel in the furnace in time, the optimal remedy opportunity is missed, and the buckling of the strip steel in the furnace is aggravated are solved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A method for diagnosing buckling of strip steel in a vertical annealing furnace is characterized by comprising the following steps:
acquiring tension set values of all areas in the furnace;
acquiring actual tension values of all areas in the furnace;
acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace;
judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not;
when the tension fluctuation quantity meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of band steel in the furnace region corresponding to the tension fluctuation quantity;
the method further comprises the following steps:
obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position;
judging whether the first deviation amount and the first deviation correction amount meet a first preset condition or not, and obtaining a first position corresponding to the strip steel when the first deviation amount and the first deviation correction amount meet the first preset condition;
obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace;
judging whether the second deviation amount and the second deviation amount meet a second preset condition, and obtaining a second position corresponding to the strip steel when the second deviation amount and the second deviation amount meet the second preset condition;
judging whether the first position is the same as the second position, if so, sending second buckling information, wherein the second buckling information is buckling of the strip steel in the furnace;
the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm;
the second preset condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
2. The method of claim 1, wherein obtaining the fluctuation amount of the tension in each zone of the furnace based on the tension set value of each zone of the furnace and the tension actual value of each zone of the furnace comprises:
according to the formula Δ Ti＝Ti-act-Ti-setObtaining a tension fluctuation curve of each area in the furnace;
wherein, Ti-actThe actual value of the strip steel tension in the ith area of the annealing furnace, Ti-setSet value of strip tension, delta T, for the i-th zone of the annealing furnaceiThe actual tension fluctuation value of the strip steel in the ith area of the annealing furnace is shown, the tension fluctuation curve of each area in the furnace is a curve formed by the tension fluctuation values obtained at each moment in the corresponding area, i is the ith area of the annealing furnace, and i is a positive integer of 1-7;
obtaining a maximum tension fluctuation value and a minimum tension fluctuation value of each area in the furnace according to the tension fluctuation curve of each area in the furnace;
and obtaining the tension fluctuation amount according to the maximum tension fluctuation value and the minimum tension fluctuation value.
3. The method of claim 1, wherein said determining whether the amount of tension fluctuation of each zone in the furnace satisfies a set threshold comprises:
when the amount of the tension fluctuation satisfies the formula (max Δ T)i-minΔTi)≥k1*Ti-setIf so, the tension fluctuation quantity meets the set threshold value;
wherein, max Δ TiIs the maximum tension fluctuation value, min Delta TiAt a minimum tension fluctuation value, Ti-setSet value of strip tension, k, for the i-th zone of the annealing furnace1Is a tension fluctuation critical value.
4. The method of claim 3, wherein k is110 to 20 percent.
5. The device for diagnosing buckling of the strip steel in the vertical annealing furnace is characterized by comprising the following components:
a first obtaining unit, which is used for obtaining tension set values of all areas in the furnace;
a second obtaining unit, configured to obtain actual tension values of each zone in the furnace;
a third obtaining unit, configured to obtain a tension fluctuation amount of each region in the furnace according to a tension set value of each region in the furnace and a tension actual value of each region in the furnace;
a first determination unit configured to determine whether the amount of tension fluctuation in each region in the furnace satisfies a set threshold;
the first sending unit is used for sending first buckling information when the tension fluctuation amount meets the set threshold value, wherein the first buckling information is buckling of band steel in an in-furnace area corresponding to the tension fluctuation amount;
the device further comprises:
the seventh obtaining unit is used for obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position;
the second judging unit is used for judging whether the first deviation amount and the first deviation correcting amount meet a first preset condition or not, and acquiring a first position corresponding to the strip steel when the first deviation amount and the first deviation correcting amount meet the first preset condition;
the eighth obtaining unit is used for obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace;
the third judging unit is used for judging whether the second deviation amount and the second deviation correcting amount meet a second preset condition or not, and when the second deviation amount and the second deviation correcting amount meet the second preset condition, a second position corresponding to the strip steel is obtained;
a fourth judging unit, configured to judge whether the first position is the same as the second position, and send second buckling information if the first position is the same as the second position, where the second buckling information is that the strip steel in the furnace buckles;
the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm;
the second preset condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
6. The device for diagnosing the buckling of the strip steel in the vertical annealing furnace comprises a memory, a processor and a computer program which is stored on the memory and can be operated on the processor, and is characterized in that the processor executes the program to realize the following steps:
acquiring tension set values of all areas in the furnace;
acquiring actual tension values of all areas in the furnace;
acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace;
judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not;
when the tension fluctuation quantity meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of band steel in the furnace region corresponding to the tension fluctuation quantity;
obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position;
judging whether the first deviation amount and the first deviation correction amount meet a first preset condition or not, and obtaining a first position corresponding to the strip steel when the first deviation amount and the first deviation correction amount meet the first preset condition;
obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace;
judging whether the second deviation amount and the second deviation amount meet a second preset condition, and obtaining a second position corresponding to the strip steel when the second deviation amount and the second deviation amount meet the second preset condition;
judging whether the first position is the same as the second position, if so, sending second buckling information, wherein the second buckling information is buckling of the strip steel in the furnace;
the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm;
the second preset condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
7. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:
acquiring tension set values of all areas in the furnace;
acquiring actual tension values of all areas in the furnace;
acquiring the tension fluctuation quantity of each area in the furnace according to the tension set value of each area in the furnace and the tension actual value of each area in the furnace;
judging whether the tension fluctuation amount of each area in the furnace meets a set threshold value or not;
when the tension fluctuation quantity meets the set threshold value, sending first buckling information, wherein the first buckling information is buckling of band steel in the furnace region corresponding to the tension fluctuation quantity;
obtaining a first deviation amount and a first deviation correction amount of the strip steel at the inlet loop position;
judging whether the first deviation amount and the first deviation correction amount meet a first preset condition or not, and obtaining a first position corresponding to the strip steel when the first deviation amount and the first deviation correction amount meet the first preset condition;
obtaining a second deviation amount and a second deviation correction amount of the strip steel in the furnace;
judging whether the second deviation amount and the second deviation amount meet a second preset condition, and obtaining a second position corresponding to the strip steel when the second deviation amount and the second deviation amount meet the second preset condition;
judging whether the first position is the same as the second position, if so, sending second buckling information, wherein the second buckling information is buckling of the strip steel in the furnace;
the first preset condition is that the first deviation correction amount is less than or equal to 70-90%, and the first deviation correction amount is greater than or equal to 10 mm;
the second preset condition is that the second deviation correction amount is less than or equal to 70-90%, and the second deviation amount is greater than or equal to 10 mm.
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