CN107891066B - A kind of method and system of milling train tensometer maintenance - Google Patents
A kind of method and system of milling train tensometer maintenance Download PDFInfo
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- CN107891066B CN107891066B CN201711002535.2A CN201711002535A CN107891066B CN 107891066 B CN107891066 B CN 107891066B CN 201711002535 A CN201711002535 A CN 201711002535A CN 107891066 B CN107891066 B CN 107891066B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
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Abstract
The present invention provides a kind of method and system of milling train tensometer maintenance, which comprises detects mill interstand tension using tensometer pressure head；Using the tensometer pressure head of working side and driving side as acquisition source, tension value is obtained from the acquisition source；Judge whether the tension value obtained from each acquisition source is abnormal, if abnormal, regards as failure side acquisition source；The tension value for abandoning obtaining failure side acquisition source replaces the tension value as failure side acquisition source using the tension value in non-faulting side acquisition source.When one-sided tensile forces meter detects exception, the method for the present invention can detect numerical value with normal side tension and replace failure side, be produced, and avoid high quick-break band, parking.Through the multiple simulation test in scene, have verified that the present invention is truly feasible.
Description
Technical field
The invention belongs to the method and system that rolling technical field more particularly to a kind of milling train tensometer are safeguarded.
Background technique
Mill interstand tension detection is using ABB tensometer pressure head in the sour tandem rolling producing line of Shoudu Iron and Steel Co Jing Tang company 1420.
Tension is an important parameter in cold continuous rolling production process, and the quality of the tension force performance between rack directly affects production
The continuous operation of line, and the accuracy of tension detection is the most basic condition of tension force.From part of in August, 2013 go into operation with
Come, the case where damage occurs successively in interstand tension meter pressure head.The frequent operation of tensometer pressure head is abnormal, not only results in machine
Break in frame a large amount of with product agreement product with generating, and handle primary disconnected band and replaceable pressure head to delay or so 4 hours
Production time, this has seriously affected the rhythm of production of producing line.Therefore, developing one kind avoids one-sided tensile forces detection between rack different
Often, the disconnected method with parking of milling train is extremely important.
Summary of the invention
For the above problem in the prior art, the main purpose of the present invention is to provide a kind of maintenances of milling train tensometer
Method can abandon the tension value of the tensometer of acquisition abnormity when one-sided tensile forces meter detects abnormal in time, avoid milling train because opening
Power detects abnormal and disconnected band, parking, and guarantee producing line production is steady.
In order to achieve the above object, the present invention adopts the following technical scheme: a kind of method of milling train tensometer maintenance, described
Method includes:
Mill interstand tension is detected using tensometer pressure head；
Using the tensometer pressure head of working side and driving side as acquisition source, tension value is obtained from the acquisition source；
Judge whether the tension value obtained from each acquisition source is abnormal, specifically includes: judging of one-sided tensile forces meter pressure head
Working side and driving side tensometer in force value, the variation of the tension value in one-sided tensile forces meter pressure head continuous scanning period and actual production
The variation of pressure head tension value summation；
If abnormal, failure side acquisition source is regarded as；
The tension value for abandoning obtaining failure side acquisition source is replaced using the tension value in non-faulting side acquisition source as event
Hinder the tension value in side acquisition source.
As a further preference, it is described judge the tension value that is obtained from each acquisition source whether include: extremely
Judge whether one-sided tensile forces value is less than limiting value；
Judge the one-sided tensile forces meter pressure head continuous scanning period tension variation whether over-limit condition；
Judge whether working side and driving side tension value summation are greater than setting working side and driving side tension in actual production
It is worth the 45-55% of summation；
When the above judgement is, assert that unilateral is that failure side acquires source.
As a further preference, whether the tension value for judging to obtain from each acquisition source is abnormal further include: judgement
Whether rolling mill speed is greater than 300mpm.
As a further preference, the limiting value is 1 ton.
As a further preference, the continuous scanning period is the 2-3 scan period of front and back.
As a further preference, judge whether working side and driving side tension value summation are greater than setting work in actual production
Make the 45% of side and driving side tension value summation；
As a further preference, using failure side acquisition source, another non-faulting working side or driving side acquire source accordingly
Tension value replace failure side acquisition source tension value.
As a further preference, the method also includes: by the tension variation zero setting of strip working side and driving side.
As a further preference, the method also includes: it is described regard as failure side acquisition source when, warning reminding operation
Personnel.
Another object of the present invention is to provide a kind of system for milling train tensometer maintenance that the above method uses, the systems
System includes:
Acquisition unit, for obtaining tension value from acquisition source, the acquisition source is the tensometer pressure of working side and driving side
Head；
Whether judging unit, the tension value for judging to obtain from each acquisition source are abnormal；It specifically includes: judgement unilateral
In the tension value of power meter pressure head, the variation of the tension value in one-sided tensile forces meter pressure head continuous scanning period and actual production working side with
The variation of driving side tensometer pressure head tension value summation；If abnormal, failure side acquisition source is regarded as；
Switch unit replaces the tension in failure side acquisition source using the tension value in normal acquisition source for switching tension value
Value.
As a further preference, the system also includes:
Display unit, the position in the acquisition source for showing the tension value obtained from each acquisition source and tension value exception
It sets；
It is abnormal to acquire source tension value for warning reminding operator for alarm unit.
The beneficial effects of the present invention are: detecting mill interstand tension using tensometer pressure head in cold continuous rolling production process；
The method of the present invention obtains tension value using the tensometer pressure head of working side and driving side as acquisition source, from the acquisition source；Then
Judge whether the tension value obtained from each acquisition source is abnormal, specifically includes and judge that one-sided tensile forces value, one-sided tensile forces meter pressure head connect
The factors such as working side and driving side tension value summation in the tension variation and actual production of continuous scan period, using above-mentioned factor
It whether abnormal can accurately assert certain side tension value, and will not cause to judge by accident；Failure side is regarded as if above-mentioned factor is abnormal to adopt
Ji Yuan；And then the tension value in the failure side detected acquisition source is abandoned, it is replaced using the tension value in non-faulting side acquisition source.
Milling train is avoided because of tension detects exception or tensometer failure due to break band, parking, reduces band and produces, guarantee that producing line production is put down
Surely.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the Method And Principle schematic diagram of milling train of embodiment of the present invention tensometer maintenance.
Fig. 2 is the system communication schematic diagram of 1 milling train tensometer of embodiment of the present invention maintenance.
Fig. 3 is the system communication schematic diagram of 2 milling train tensometer of embodiment of the present invention maintenance.
Fig. 4 is the method flow schematic diagram of 2 milling train tensometer of embodiment of the present invention maintenance.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
The embodiment of the present invention can detect exception by providing a kind of method and system of milling train tensometer maintenance in time
Tensometer, and abandon the tension value of the tensometer of acquisition abnormity, avoid milling train because tension detects it is abnormal due to break band, parking, guarantor
It is steady to demonstrate,prove producing line production.
To solve the above-mentioned problems, the main thought of the embodiment of the present invention is:
As shown in Figure 1, the method for milling train tensometer of embodiment of the present invention maintenance, which comprises
Step S01: mill interstand tension is detected using tensometer pressure head；
Step S02: using the tensometer pressure head of working side and driving side as acquisition source, tension is obtained from the acquisition source
Value；
Step S03: judge whether the tension value obtained from each acquisition source is abnormal, specifically includes: judging one-sided tensile forces meter
Working side and driving in the tension value of pressure head, the variation of the tension value in one-sided tensile forces meter pressure head continuous scanning period and actual production
The variation of side tensometer pressure head tension value summation；
If abnormal, failure side acquisition source is regarded as；
Step S04: abandon obtaining the tension value in failure side acquisition source, using the tension value generation in non-faulting side acquisition source
For the tension value as failure side acquisition source.
Specifically, illustrating each step individually below.
Step S01-S02:
In finishing mill, generally the driving side below loop back roll and fore side install tensometer respectively in advance, for dividing
Not Ce Liang driving side and fore side strip tension, such as mill interstand tension in the sour tandem rolling producing line of Shoudu Iron and Steel Co Jing Tang company 1420
Detect the ABB tensometer pressure head used.
Step S03:
The embodiment of the present invention by actual production when previous tensometer pressure head failure curve and it is normal when
Force curve compares and analyzes, and concludes.Tensometer pressure head detection abnormality judgment method is summed up, i.e., each acquisition source is obtained
Tension value carries out various analyses, such as: one-sided tensile forces value whether abnormal, the one-sided tensile forces meter pressure head continuous scanning period
Power variation whether in exception and actual production working side and driving side tension value summation and setting working side and driving side
Force value summation is compared, if is existed abnormal etc..
Regarding as the method that failure side acquisition source uses includes:
Judge whether one-sided tensile forces value is less than limiting value；
Judge the one-sided tensile forces meter pressure head continuous scanning period tension variation whether over-limit condition；
Judge whether working side and driving side tension value summation are greater than setting working side and driving side tension in actual production
It is worth the 45-55% of summation；
When the above judgement is, assert that unilateral is that failure side acquires source.
In addition, the above-mentioned method for regarding as the acquisition source use of failure side, which may also include that, judges whether rolling mill speed is greater than
300mpm may cause malfunction to exclude low speed tension fluctuation, reduce error.
The ginseng such as ratio of tension value summation of the selection of above-mentioned limiting value, tension value summation when being abnormal and setting
Number, and the step of judging combination etc. are formed according to actual production Data Summary, when being applied in actual production, by exception
The accuracy rate that tensometer regards as failure side acquisition source is quite high.
Step S04:
When assert a certain unilateral acquisition source for failure side, i.e., the tension values of a certain unilateral side are abnormal, then automatically by the side
The numerical value that tensometer pressure head detects is abandoned, and with the normal tension of the other side corresponding with failure side (working side or driving side)
Count value replaces failure side, and Instructing manufacture is normally carried out.Further, tension variation zero setting, milling train no longer carry out Levelling operation,
Specific Levelling operation principle and method are same as the prior art, and it will not be described here.
In addition, when assert a certain unilateral acquisition source for failure side, it can also warning reminding operative employee and automated maintenance
Personnel pay attention to；Or the position of display failure side is convenient for changing.
The method of above-mentioned milling train tensometer maintenance can be completed by following system, and Fig. 2 is 1 milling train tension of the embodiment of the present invention
Count the system communication schematic diagram of maintenance.Referring to fig. 2, the system comprises:
Acquisition unit, for obtaining tension value from acquisition source, the acquisition source is the tensometer pressure of working side and driving side
Head；
Whether judging unit, the tension value for judging to obtain from each acquisition source are abnormal；It specifically includes: judgement unilateral
In the tension value of power meter pressure head, the variation of the tension value in one-sided tensile forces meter pressure head continuous scanning period and actual production working side with
The variation of driving side tensometer pressure head tension value summation；If abnormal, failure side acquisition source is regarded as；
Switch unit replaces the tension in failure side acquisition source using the tension value in normal acquisition source for switching tension value
Value.
Fig. 3 is the system communication schematic diagram of 2 milling train tensometer of embodiment of the present invention maintenance.Referring to Fig. 3, in 1 system of embodiment
On the basis of system, 2 system of the embodiment of the present invention may also include that
Display unit, the position in the acquisition source for showing the tension value obtained from each acquisition source and tension value exception
It sets；
It is abnormal to acquire source tension value for warning reminding operator for alarm unit.
Specifically, illustrating each unit of system respectively below in conjunction with attached drawing.
By taking 2 system of embodiment of Fig. 3 as an example, tension value is to be detected by ABB tensometer pressure head, and be transferred to tensometer control
Cabinet, tensometer control cabinet are communicated with Hitachi's R700 processing system, and above-mentioned processing system may include acquisition unit, judging unit
And switch unit；Acquisition unit obtains the tension value of tensometer pressure head detection, and carries out data to tension value by judging unit
Reason, judges whether certain side is failure side by the result of data processing, tension value exception occurs and output order is single to switching
Member automatically abandons the numerical value that failure side tensometer pressure head detects, and is replaced with other side tension detected value, and control tension
Count control cabinet operation.
The system of 2 milling train tensometer of the present embodiment maintenance may also include display unit and alarm unit, with above-mentioned processing system
System is connected, and display unit can be the HMI interface equipment of human-computer interaction, can show the tension of each acquisition source tensometer pressure head
Value, corresponding numbered positions in acquisition source of tension value and tension value exception of setting etc..Above-mentioned alarm unit can be infrared or
Combined aural and visual alarm, warning reminding operative employee and automated maintenance personnel pay attention to.
It is following to enumerate the example that tensometer is safeguarded in one 1420 acid milling train production processes, to confirm the effect of the method for the present invention
Fruit:
21:41 on April 5 divides within 2017, and for 1420 acid milling trains just in high-speed production, rolling mill structure is same as the prior art,
It repeats no more；Speed of service 1509.6mpm (rice/every point), 1 rack working side tension count value are reduced to rapidly 0 by 7.21 tons,
Cause 1 rack tension variation to suddenly become and suddenly becomes nearly 10 tons by -0.05 ton.The present embodiment tensometer maintaining method at this time
Rapid interventional procedure gets rid of working side tensometer, is replaced using the tension value of driving side tensometer detection, thus avoids primary
High quick-break band.And 1420 acid roll design maximum speed 1800mpm, and when tensometer breaks down, speed 1509.mpm, if at this time
Disconnected band, which occurs, will cause serious piling of steel and equipment damage, handles disconnected band and restorer takes a long time.
Under above-mentioned fault condition, the system and method interventional procedure safeguarded using 2 milling train tensometer of the embodiment of the present invention,
Detailed process is shown in Fig. 4, and steps are as follows for maintenance:
Hitachi's R700CPU processing system in real time sweeps the tensometer detection numerical value transmitted in tensometer control cabinet
It retouches, determines.Tensometer failure judgment method is as follows:
1) rolling mill speed is greater than 300mpm (excluding low speed tension fluctuation may cause malfunction).
2) certain side tension is less than 1 ton.
3) 2 scan period tension variations are more than 1 tonnage value before and after certain side tensometer.
4) always feedback tension (real work side adds driving side tension summation) is greater than the 45% of setting total tension.
When conditions above all meets, then the side tensometer failure is assert, detection is abnormal；
When determining that tensometer detection in side is abnormal, the processing system numerical value that tensometer pressure head detects by the side automatically is abandoned
With, and replaced with other side tension detected value；
Tension variation zero setting；
The interface HMI warning note；
So far maintenance switching is completed.
Technical solution in above-mentioned the embodiment of the present application, at least have the following technical effects or advantages:
Mill interstand tension is detected using tensometer pressure head in cold continuous rolling production process；The method of the present invention by working side and
The tensometer pressure head of driving side obtains tension value as acquisition source, from the acquisition source；Then judge to obtain from each acquisition source
Tension value it is whether abnormal, specifically include the tension variation for judging one-sided tensile forces value, one-sided tensile forces meter pressure head continuous scanning period
And the factors such as working side and driving side tension value summation in actual production, certain side tension value can accurately be assert using above-mentioned factor
It is whether abnormal, and will not cause to judge by accident；Failure side acquisition source is regarded as if above-mentioned factor is abnormal；And then it abandons described in acquisition
The tension value in failure side acquisition source.It avoids milling train from stopping, reduces high quick-break band, reduce band and produce.In one-sided tensile forces meter exception,
Failure side can be replaced using non-faulting side tension detected value automatically, avoid stopping.Fault time is reduced, production efficiency is improved.
When there is tensometer pressure head failure in the past, it is necessary to which replaceable pressure head immediately can delay the production time of or so 4 hours.This method
It can stop to avoid milling train, even if tensometer pressure head failure, can also normally produce, improve production efficiency.Until maintenance, then more
Change failure side tensometer pressure head.It is safe and efficient.In one-sided tensile forces meter exception, it can detect rapidly, and make a response, keep away
Exempt from damage of the high quick-break band to equipment.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.Obviously, those skilled in the art can be to the present invention
Carry out various modification and variations without departing from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to encompass these modification and variations and exists
It is interior.
Claims (9)
1. a kind of method of milling train tensometer maintenance, it is characterised in that: include:
In advance tensometer is installed in driving side and fore side respectively, mill interstand tension is detected using tensometer pressure head；
Using the tensometer pressure head of working side and driving side as acquisition source, tension value is obtained from the acquisition source；
Judge whether the tension value obtained from each acquisition source is abnormal, specifically includes: judging whether one-sided tensile forces value is less than the limit
Value；Judge the one-sided tensile forces meter pressure head continuous scanning period tension variation whether over-limit condition；Judge to work in actual production
Whether side and driving side tension value summation are greater than the 45-55% of setting working side and driving side tension value summation；When the above judgement
When being, assert that unilateral is that failure side acquires source；
If abnormal, failure side acquisition source is regarded as；The tension value for abandoning obtaining failure side acquisition source, using non-faulting side
The tension value in acquisition source replaces the tension value as failure side acquisition source.
2. the method for milling train tensometer maintenance according to claim 1, it is characterised in that: described to judge from each acquisition source
Whether the tension value of acquisition is abnormal further include: judges whether rolling mill speed is greater than 300mpm.
3. the method for milling train tensometer maintenance according to claim 1, it is characterised in that: the one-sided tensile forces value and unilateral side
The limiting value of the tension variation in tensometer pressure head continuous scanning period is 1 ton.
4. the method for milling train tensometer maintenance according to claim 1, it is characterised in that: before the continuous scanning period is
The 2-3 scan period afterwards.
5. the method for milling train tensometer maintenance according to claim 1, it is characterised in that: judge working side in actual production
Whether it is greater than the 45% of setting working side and driving side tension value summation with driving side tension value summation.
6. the method for milling train tensometer maintenance according to claim 1, it is characterised in that: corresponding using failure side acquisition source
Another non-faulting working side or driving side acquisition source tension value replace failure side acquisition source tension value.
7. the method that milling train tensometer according to claim 1 or 6 is safeguarded, it is characterised in that: the method also includes: it will
The tension variation zero setting of strip working side and driving side.
8. a kind of system for the maintenance of milling train tensometer, it is characterised in that: the system comprises:
Acquisition unit installs tensometer in driving side and fore side in advance respectively, described to adopt for obtaining tension value from acquisition source
Ji Yuan is the tensometer pressure head of working side and driving side；
Whether judging unit, the tension value for judging to obtain from each acquisition source are abnormal；Specifically include: disconnected one-sided tensile forces value is
It is no to be less than limiting value；Judge the one-sided tensile forces meter pressure head continuous scanning period tension variation whether over-limit condition；Judgement is practical
Whether working side and driving side tension value summation are greater than the 45-55% of setting working side and driving side tension value summation in production；
When the above judgement is, assert that unilateral is that failure side acquires source；If abnormal, failure side acquisition source is regarded as；
Switch unit replaces the tension value in failure side acquisition source using the tension value in normal acquisition source for switching tension value.
9. system as claimed in claim 8, it is characterised in that: the system also includes:
Display unit, the position in the acquisition source for showing the tension value obtained from each acquisition source and tension value exception；
It is abnormal to acquire source tension value for warning reminding operator for alarm unit.
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| CN110576051B (en) * | 2019-09-04 | 2020-11-20 | 首钢京唐钢铁联合有限责任公司 | Roller compensation adjusting method for tensiometer |
| CN112050985A (en) * | 2020-08-12 | 2020-12-08 | 北京首钢自动化信息技术有限公司 | Method and device for acquiring tension value |
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