CN105907918B - A kind of control system and method for improving converter oxygen lance safe operation - Google Patents
A kind of control system and method for improving converter oxygen lance safe operation Download PDFInfo
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- CN105907918B CN105907918B CN201610524624.2A CN201610524624A CN105907918B CN 105907918 B CN105907918 B CN 105907918B CN 201610524624 A CN201610524624 A CN 201610524624A CN 105907918 B CN105907918 B CN 105907918B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 318
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 318
- 239000001301 oxygen Substances 0.000 title claims abstract description 318
- 238000000034 method Methods 0.000 title claims abstract description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 9
- 240000006909 Tilia x europaea Species 0.000 claims abstract description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 9
- 239000004571 lime Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000012937 correction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101100408464 Caenorhabditis elegans plc-1 gene Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000027734 detection of oxygen Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to a kind of control system and method for improving converter oxygen lance safe operation, the system includes converter oxygen gun control PLC, oxygen lance lifting altimeter coder, oxygen lance lifting motor and incremental encoder and 7 proximity switches.Oxygen rifle control PLC gathers the signal of proximity switch in real time, and the position of the distributing installation of proximity switch is：Working position in oxygen rifle limes superiors position, oxygen rifle, oxygen rifle rises deceleration position 1, and oxygen rifle rises deceleration position 2 and oxygen rifle declines working position under deceleration position, oxygen rifle, oxygen rifle limit inferior position.The speed of service accurately can be limited by the proximity switch signal of acquisition and the signal of encoder values, pass through upper work site and the numerical value of the point real time correction converter oxygen gun adjustable height of lower working position, the oxygen lance lifting motor speed incremental encoder value that is obtained using frequency converter examines oxygen lance lifting absolute value encoder, so as to improve the security of converter oxygen gun operation, prevent from causing the out of control of oxygen rifle because converter oxygen gun encoding up/down device calculates position deviation.
Description
Technical field
The invention belongs to pneumatic steelmaking capital equipment oxygen rifle height detection and controlling technology of velocity field, it is related to a kind of raising
The control system and method for converter oxygen lance safe operation.
Background technology
In traditional converter oxygen gun control system, converter oxygen gun is highly typically according to behind reel by PLC
1 or 2 absolute value type encoder numerical computations come out, and aid in position of the cam switch (control switch) to oxygen rifle
Put and positioned, or stop protecting as tight using proximity switch in high-low limit position.This simple combination control mode is deposited
In following defect：
1st, when using master controller, its product performance determines that the control accuracy can not possibly be very high.Master controller
The signal sent is generally detected as an interval range, and interval interior master controller is with regard to sender, rather than a short pulse herein
Signal, therefore there is in test position larger deviation.Main order control can loosen later long at runtime in addition, to letter
Number test point carry out deviation, and correct cumbersome, substantial amounts of work brought to actual operation maintenance.
2nd, because deviation phenomenon occurs in the encoding up/down device of converter oxygen gun in rotary course, the feelings particularly in interference
Under condition, because the speed that oxygen rifle is run with the height value that oxygen rifle encoder values are calculated has many linkage relationships, when
In abnormal cases, the normal operation of meeting oxygen rifle brings great threat to the value of oxygen rifle encoder.
3rd, because the position detection of oxygen lance lifting plays vital effect to the technique and safety of pneumatic steelmaking, therefore
Differentiate the position of oxygen rifle now with using double absolute value type encoders, sentence to a certain extent than single absolute value type encoder
The position of disconnected oxygen rifle is relatively reliable, but this mode using the incremental encoder of existing oxygen rifle velocity measuring than passing through program
Processing highly judges to have to invest higher as oxygen rifle, and this encoder is all simultaneously to hang over PLC system by fieldbus
In, if when network failure, the value that may result in two encoders all goes wrong, so as to cause oxygen rifle altimeter
Calculate and occur big deviation, the normal operation to oxygen rifle brings detrimental effect.
The content of the invention
In view of this, it is an object of the invention to provide a kind of control system for improving converter oxygen lance safe operation and side
Method, safety detection means are run using 7 proximity switches as converter oxygen gun, traditionally limit inferior position and the detection of upper working position
On the basis of add deceleration position 1 in oxygen rifle, upper deceleration position 2, and lower speed limit position and lower working position detection；Use oxygen rifle simultaneously
The calculated value of speed increment type encoder slows down to a kind of discriminant approach of oxygen rifle height absolute value type encoder using in oxygen rifle
The speed that position 1 and the proximity switch of upper deceleration position 2 two are run to oxygen rifle carries out pressure amplitude limit, during oxygen rifle dead slow speed is lifted
Employ the mode of timing oxygen rifle is risen and protected, it is to avoid oxygen rifle occurs when detection goes wrong and rushes for oxygen rifle
Useful event.Worked in the oxygen rifle collected additionally by detection oxygen rifle control PLC under working position (oxygen rifle changes rifle height) and oxygen rifle
Position signal, to be modified in real time to oxygen rifle high computational, improves the accuracy of oxygen rifle position calculating.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of control system for improving converter oxygen lance safe operation, the system includes converter oxygen gun control PLC, converter oxygen gun
Adjustable height encoder, oxygen lance lifting frequency converter, oxygen lance lifting motor and the converter oxygen gun lifting for measuring lifting motor speed
Speed encoder and 7 oxygen lance lifting proximity switches；
The oxygen lance lifting proximity switch is arranged on above the track of oxygen rifle trolley travelling, is distributed in from top to bottom in oxygen rifle
Limit position, working position (oxygen rifle changes rifle height) in oxygen rifle, deceleration position 1 in oxygen rifle, deceleration position, oxygen under deceleration position 2, oxygen rifle in oxygen rifle
Working position and oxygen rifle limit inferior position under rifle；Above-mentioned proximity switch is directly connected to converter oxygen gun control by way of hardwire
PLC system, PLC system is by detecting that these proximity switch signals can operate in what some was put with the more accurate oxygen rifle that detects
Position height；
The converter oxygen gun lifting speed encoder uses the incremental encoder of individual pen, is accessed by way of hardwire
Into oxygen lance lifting frequency converter, do oxygen rifle speed closed loop for frequency converter and use, and the incremental encoder that frequency converter is collected
Value can be real-time transmitted to oxygen rifle control PLC by communication network；The converter oxygen gun adjustable height encoder is using multi-turn
Absolute value type encoder, is linked into oxygen rifle control PLC system using communication network, passes through the real-time capturing and coding device code of network
Value.
Further, the oxygen rifle limes superiors position and limit inferior position proximity switch use can export the close of dual signal and open
Close, oxygen rifle frequency converter control cabinet is directly connected to using hardwire mode all the way, in addition all the way by being linked into oxygen rifle PLC controls
Loop；When pole limit signal is triggered, tightly stops mode (disconnected main circuit power and band-type brake) using hardware and PLC program control is altogether
With forcing the oxygen rifle out of service；When by oxygen rifle encoder detecting distance exceed limes superiors position height or less than limit inferior position
During height, oxygen rifle also will be out of service, turn artificial operation with alarm, so as to improve operational reliability, it is to avoid oxygen rifle
The danger rushed to summit and break steel wire to cause oxygen rifle to be fallen.
Present invention also offers a kind of control method for improving converter oxygen lance safe operation, this method comprises the following steps：
S1：The encoded radio collected in real time is converted to converter oxygen gun height value by converter oxygen gun PLC by conversion program, right
The data collected in oxygen rifle incremental encoder are converted to oxygen rifle height value for H1, wherein H1=H0+ Σ Δs δ, H0Opened for oxygen rifle
When beginning to run, oxygen rifle height value, Δ δ is that incremental encoder code value changes the oxygen rifle Level Change calculated when oxygen rifle is run
Value；The oxygen rifle height value that absolute type encoder is calculated is used for H2；
S2：Obtained H is calculated by gathering1And H2The state that detection oxygen rifle is run in real time, when | H1-H2| during≤ε, represent
The height value that oxygen rifle is calculated is normal, and oxygen rifle can normally be run；When | H1-H2| during ＞ ε, represent that oxygen rifle high computational has error
Excessive, oxygen rifle can only be transformed into manually operated and alarm；ε is oxygen rifle height tolerance threshold value, is set to 100mm；Pass through inspection simultaneously
Working position signal under working position in the oxygen rifle that oxygen determination rifle control PLC is collected (oxygen rifle changes rifle height) and oxygen rifle, to oxygen rifle height
Degree is calculated and is modified in real time, improves the accuracy of oxygen rifle position calculating；And by gathering the upper and lower deceleration position of oxygen rifle in real time
Proximity switch signal, under deceleration proximity switch is detected in oxygen rifle uphill process or is detected when oxygen rifle declines
Deceleration proximity switch signal, to limit the speed of oxygen rifle operation, the speed of service of oxygen rifle is forced to be reduced to low speed, so as to improve
Oxygen rifle reliability of operation.
Further, in the method, oxygen rifle, which is run up, is provided with deceleration position 1 and oxygen in two upper deceleration position, i.e. oxygen rifles
Deceleration position 2 on rifle；When oxygen rifle is run up, when the proximity switch signal or oxygen rifle that detect upper deceleration position 2 pass through volume
When the range difference of working position is 2000mm on the position that detects of code device and oxygen rifle, it will be low speed operation to force oxygen rifle speed,
The low speed speed of service is set to 10Hz；When the proximity switch signal or oxygen rifle that oxygen rifle detects upper deceleration position 1 are examined by encoder
When the range difference of working position is 200mm on the position measured and oxygen rifle, oxygen rifle speed will force to switch to dead slow speed operation, dead slow speed operation
Speed is set to 3Hz；And start timing to be forced to dead slow speed operation, when oxygen rifle is run up with dead slow speed, timing time exceedes
10s (adjustable) and when being not detected by working position signal in oxygen rifle, oxygen rifle is out of service, alarms and simultaneously turns artificial dead slow speed operation.
The beneficial effects of the present invention are：1st, master controller is run and correcting device as oxygen rifle before replacing, so that
Reduce the maintenance workload of master controller.2nd, only increase by 4 proximity switches as converter oxygen lance safe control it is a kind of auxiliary
Assistant's section, improves the security of converter oxygen gun operation.3rd, in the case where not increasing extra investment situation, oxygen rifle speed increment is used
The calculated value of type encoder differentiates to oxygen rifle height absolute value type encoder, and many one layer guarantors are provided for the operation of oxygen rifle
Shield.4th, worked or lower working position proximity switch signal on oxygen rifle is detected, and the oxygen rifle that oxygen lance lifting encoder is calculated
When the deviation of height value and lower work position calibrated altitude value is within the scope of, program will be corrected to turning angle automatically；
Worked when detecting in oxygen rifle or lower working position proximity switch signal, and the oxygen rifle height value that oxygen lance lifting encoder is calculated
And when the deviation of lower work position calibrated altitude value is not within the scope of, it will point out, and turned to above HMI on HMI
Encoder correcting button carry out oxygen rifle height correction.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is converter oxygen gun control system schematic diagram of the invention；
Fig. 2 is oxygen rifle position correction control flow chart；
Wherein：H1 is that oxygen rifle height absolute value type encoder values calculate oxygen rifle height value, and H2 is oxygen rifle speed increment type
Encoder values calculate oxygen rifle height value, and ε is oxygen rifle height tolerance threshold value；
Fig. 3 is that oxygen rifle rises to the control flow chart for changing rifle position；
Wherein：HpvFor the real-time absolute altitude value of oxygen rifle, HepTo change rifle position absolute altitude (with respect to 0 meter plane), δ1For oxygen rifle
Actual height is reduced to the threshold value of low speed, δ with setting height2For oxygen rifle actual height and the threshold value of the poor reduction of speed dead slow speed of setting height, δ3
For oxygen rifle actual height and the threshold value out of service of setting height difference, Hs1For the absolute altitude of upper deceleration point 1, Hs2Slow down to be upper
The absolute altitude of point 2；
Fig. 4 is the control flow chart that oxygen rifle drops to lower working position；
Wherein：HpvFor the real-time absolute altitude value of oxygen rifle, HwpFor working position absolute altitude under oxygen rifle (with respect to 0 meter plane), δ1
The threshold value of low speed, δ are reduced to for oxygen rifle actual height and setting height2For the poor reduction of speed dead slow speed of oxygen rifle actual height and setting height
Threshold value, δ3For oxygen rifle actual height and the threshold value out of service of setting height difference, Hs3For the absolute altitude of lower deceleration position, Hs4For
The absolute altitude of lower working position；
Fig. 5 is oxygen rifle proximity switch scheme of installation；
Wherein：1 is oxygen rifle limes superiors position, and 2 be working position in oxygen rifle, and 3 be that oxygen rifle rising deceleration position Isosorbide-5-Nitrae is that oxygen rifle rising subtracts
Fast position 2,5 is that oxygen rifle declines deceleration position, and 6 be working position under oxygen rifle, and 7 be oxygen rifle limit inferior position.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is converter oxygen gun control system schematic diagram of the invention, as illustrated, a kind of raising converter that the present invention is provided
The control system of oxygen rifle safe operation includes：Converter oxygen gun control PLC, converter oxygen gun adjustable height encoder, oxygen lance lifting become
The converter oxygen gun lifting speed encoder and 7 oxygen lance liftings of frequency device, oxygen lance lifting motor and measurement lifting motor speed connect
Nearly switch；
The oxygen lance lifting proximity switch is arranged on above the track of oxygen rifle trolley travelling, is distributed in from top to bottom in oxygen rifle
Limit position, working position (oxygen rifle changes rifle height) in oxygen rifle, deceleration position 1 in oxygen rifle, deceleration position, oxygen under deceleration position 2, oxygen rifle in oxygen rifle
Working position and oxygen rifle limit inferior position under rifle；Above-mentioned proximity switch is directly connected to converter oxygen gun control by way of hardwire
PLC system, PLC system is by detecting that these proximity switch signals can operate in what some was put with the more accurate oxygen rifle that detects
Position height；The converter oxygen gun lifting speed encoder uses the incremental encoder of individual pen, is connect by way of hardwire
Enter into oxygen lance lifting frequency converter, doing oxygen rifle speed closed loop for frequency converter uses, and the incremental coding that frequency converter is collected
Device value can be real-time transmitted to oxygen rifle control PLC by communication network；The converter oxygen gun adjustable height encoder uses multi-turn
Absolute value type encoder, be linked into using communication network in oxygen rifle control PLC system, pass through network real-time capturing and coding device code
Value.Fig. 5 is oxygen rifle proximity switch scheme of installation.
Wherein, the oxygen rifle limes superiors position and limit inferior position proximity switch use can export the proximity switch of dual signal,
Oxygen rifle frequency converter control cabinet is directly connected to using hardwire mode all the way, controlled back all the way by being linked into oxygen rifle PLC in addition
Road；When pole limit signal is triggered, tightly stops mode (disconnected main circuit power and band-type brake) using hardware and PLC program control is common
To force oxygen rifle out of service；It is highly or high less than limit inferior position when exceeding limes superiors position by oxygen rifle encoder detecting distance
When spending, oxygen rifle also will be out of service, turn artificial operation with alarm, so as to improve operational reliability, it is to avoid oxygen rifle punching
The danger pushed up and break steel wire to cause oxygen rifle to be fallen.
As shown in Figure 2, Figure 3, Figure 4, a kind of control method for raising converter oxygen lance safe operation that the present invention is provided, the party
Method comprises the following steps：
S1：The encoded radio collected in real time is converted to converter oxygen gun height value by converter oxygen gun PLC by conversion program, right
The data collected in oxygen rifle incremental encoder are converted to oxygen rifle height value for H1, wherein H1=H0+ Σ Δs δ, H0Opened for oxygen rifle
When beginning to run, oxygen rifle height value, Δ δ is that incremental encoder code value changes the oxygen rifle Level Change calculated when oxygen rifle is run
Value；The oxygen rifle height value that absolute type encoder is calculated is used for H2；
S2：Obtained H is calculated by gathering1And H2The state that detection oxygen rifle is run in real time, when | H1-H2| during≤ε, represent
The height value that oxygen rifle is calculated is normal, and oxygen rifle can normally be run；When | H1-H2| during ＞ ε, represent that oxygen rifle high computational has error
Excessive, oxygen rifle can only be transformed into manually operated and alarm；ε is oxygen rifle height tolerance threshold value, is set to 100mm；Pass through inspection simultaneously
Working position signal under working position in the oxygen rifle that oxygen determination rifle control PLC is collected (oxygen rifle changes rifle height) and oxygen rifle, to oxygen rifle height
Degree is calculated and is modified in real time, improves the accuracy of oxygen rifle position calculating；And by gathering the upper and lower deceleration position of oxygen rifle in real time
Proximity switch signal, under deceleration proximity switch is detected in oxygen rifle uphill process or is detected when oxygen rifle declines
Deceleration proximity switch signal, to limit the speed of oxygen rifle operation, the speed of service of oxygen rifle is forced to be reduced to low speed, so as to improve
Oxygen rifle reliability of operation.
In the method, oxygen rifle runs up to be provided with two upper deceleration position, i.e. oxygen rifles and slowed down in deceleration position 1 and oxygen rifle
Position 2；When oxygen rifle is run up, when the proximity switch signal or oxygen rifle that detect upper deceleration position 2 are detected by encoder
To position and oxygen rifle on working position range difference be 2000mm when, force by oxygen rifle speed will for low speed operation, low speed operation
Speed is set to 10Hz；The position detected when proximity switch signal or oxygen rifle that oxygen rifle detects upper deceleration position 1 by encoder
Put with the range difference of working position in oxygen rifle when being 200mm, oxygen rifle speed will force to switch to dead slow speed to run, and the dead slow speed speed of service is set to
3Hz；And start timing to be forced to dead slow speed operation, when oxygen rifle is run up with dead slow speed, timing time is (adjustable more than 10s
It is whole) and when being not detected by working position signal in oxygen rifle, oxygen rifle is out of service, alarms and simultaneously turns artificial dead slow speed operation.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (4)
1. a kind of control system for improving converter oxygen lance safe operation, it is characterised in that：The system is controlled including converter oxygen gun
PLC, converter oxygen gun adjustable height encoder, oxygen lance lifting frequency converter, oxygen lance lifting motor and measurement lifting motor speed
Converter oxygen gun lifting speed encoder and 7 oxygen lance lifting proximity switches；
The oxygen lance lifting proximity switch is arranged on above the track of oxygen rifle trolley travelling, and oxygen rifle limes superiors is distributed in from top to bottom
Position, working position in oxygen rifle, deceleration position 1 in oxygen rifle, working position and oxygen rifle under deceleration position, oxygen rifle under deceleration position 2, oxygen rifle in oxygen rifle
Limit inferior position；Above-mentioned proximity switch is directly connected to converter oxygen gun control PLC system by way of hardwire, and PLC system is led to
Cross and detect that these proximity switch signals can be with the more accurate position height that oxygen rifle operates in some point that detects；
The converter oxygen gun lifting speed encoder uses the incremental encoder of individual pen, and oxygen is linked into by way of hardwire
In rifle lifting frequency converter, do oxygen rifle speed closed loop for frequency converter and use, and the incremental encoder value energy that frequency converter is collected
Oxygen rifle control PLC is enough real-time transmitted to by communication network；The converter oxygen gun adjustable height encoder is absolute using multi-turn
Value type encoder, is linked into oxygen rifle control PLC system using communication network, passes through the real-time capturing and coding device code value of network.
2. a kind of control system for improving converter oxygen lance safe operation according to claim 1, it is characterised in that：The oxygen
Rifle limes superiors position and limit inferior position proximity switch use can export the proximity switch of dual signal, straight using hardwire mode all the way
Oxygen rifle frequency converter control cabinet is linked into, in addition all the way by being linked into oxygen rifle PLC control loops；When pole, limit signal is triggered
When, tightly stop mode using hardware and PLC program control forces oxygen rifle out of service jointly；When by oxygen rifle encoder detection away from
During from more than limes superiors position height or less than limit inferior position height, oxygen rifle also will be out of service, and artificial behaviour is turned with alarm
Make, so as to improve operational reliability, it is to avoid the danger that oxygen rifle is rushed to summit and breaks steel wire to cause oxygen rifle to be fallen.
3. the control method of converter oxygen lance safe operation is improved using system described in claim 1 or 2, it is characterised in that：The party
Method comprises the following steps：
S1：The encoded radio collected in real time is converted to converter oxygen gun height value by converter oxygen gun PLC by conversion program, for oxygen
The data that rifle incremental encoder is collected are converted to oxygen rifle height value, wherein,Start for oxygen rifle
During operation, oxygen rifle height value,Incremental encoder code value changes the oxygen rifle Level Change value calculated when being run for oxygen rifle；
Use the oxygen rifle height value that absolute type encoder is calculated for；
S2：Calculate what is obtained by gatheringWithThe state that detection oxygen rifle is run in real time, whenWhen, represent oxygen rifle
The height value of calculating is normal, and oxygen rifle can normally be run；WhenWhen, represent that oxygen rifle high computational has error mistake
Greatly, oxygen rifle can only be transformed into manually operated and alarm；For oxygen rifle height tolerance threshold value, 100mm is set to；Pass through detection simultaneously
Working position signal under working position and oxygen rifle in the oxygen rifle that oxygen rifle control PLC is collected, to be repaiied in real time to oxygen rifle high computational
Just, the accuracy of oxygen rifle position calculating is improved；And by gathering the proximity switch signal of the upper and lower deceleration position of oxygen rifle in real time,
Believe when detecting deceleration proximity switch in oxygen rifle uphill process or lower deceleration proximity switch being detected when oxygen rifle declines
Number, to limit the speed of oxygen rifle operation, the speed of service of oxygen rifle is forced to be reduced to low speed, so as to improve the reliable of oxygen rifle operation
Property.
4. control method according to claim 3, it is characterised in that：In the method, oxygen rifle, which is run up, is provided with two
Individual upper deceleration position, i.e., deceleration position 2 in deceleration position 1 and oxygen rifle in oxygen rifle；When oxygen rifle is run up, when detecting upper deceleration position
The range difference of working position is 2000mm on position that 2 proximity switch signal or oxygen rifle is detected by encoder and oxygen rifle
When, force oxygen rifle speed will be set to 10Hz for low speed operation, the low speed speed of service；When oxygen rifle detects connecing for upper deceleration position 1
When the range difference of working position is 200mm on position that nearly switching signal or oxygen rifle are detected by encoder and oxygen rifle, oxygen rifle
Speed will force to switch to dead slow speed operation, and the dead slow speed speed of service is set to 3Hz；And start timing to be forced to dead slow speed operation, work as oxygen
When rifle is run up with dead slow speed, when timing time is not detected by working position signal in oxygen rifle more than 10s, oxygen rifle is out of service,
Alarm and turn artificial dead slow speed and operate.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121966A (en) * | 2017-06-21 | 2017-09-01 | 肇庆市贺江电力发展有限公司 | Gate control system and method |
| CN107561439B (en) * | 2017-07-10 | 2019-12-03 | 首钢京唐钢铁联合有限责任公司 | Grounding detection method for converter oxygen lance frequency converter control motor |
| CN107641677B (en) * | 2017-11-08 | 2019-04-05 | 辽宁科技大学 | A kind of method for preventing skidding of wheels of converter oxygen gun |
| CN110484680A (en) * | 2019-08-05 | 2019-11-22 | 邯郸钢铁集团有限责任公司 | The method for calculating oxygen rifle height using incremental encoder |
| CN110747310B (en) * | 2019-10-29 | 2021-04-23 | 首钢京唐钢铁联合有限责任公司 | Method and device for lifting oxygen lance accident |
| CN110684879A (en) * | 2019-10-29 | 2020-01-14 | 首钢京唐钢铁联合有限责任公司 | Method and device for preventing oxygen lance from falling |
| CN111334641A (en) * | 2020-03-08 | 2020-06-26 | 广东韶钢松山股份有限公司 | Device and method for preventing converter oxygen lance from rushing to top |
| CN112029954A (en) * | 2020-07-29 | 2020-12-04 | 宁波钢铁有限公司 | Converter oxygen lance control method based on encoder |
| CN111926138B (en) * | 2020-08-13 | 2022-04-12 | 北京首钢自动化信息技术有限公司 | Method and device for controlling height of oxygen lance |
| CN112760447A (en) * | 2020-12-04 | 2021-05-07 | 河钢股份有限公司承德分公司 | Converter oxygen lance lifting control system and method |
| CN113061686B (en) * | 2021-03-17 | 2022-10-04 | 首钢京唐钢铁联合有限责任公司 | Method and device for acquiring running height of oxygen lance equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101323890B (en) * | 2008-07-28 | 2011-05-04 | 中冶南方工程技术有限公司 | Converter oxygen lance anti-fall device and control method |
| CN102220450A (en) * | 2011-07-22 | 2011-10-19 | 武汉钢铁(集团)公司 | Automatic positioning and controlling method for oxygen lance of converter |
| CN102424884B (en) * | 2011-10-19 | 2013-06-12 | 北京金自天正智能控制股份有限公司 | Lifting control system for oxygen gun accident and control method for oxygen gun accident |
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