CN105200181A - Positioning control system for oxygen lance device - Google Patents
Positioning control system for oxygen lance device Download PDFInfo
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- CN105200181A CN105200181A CN201510613589.7A CN201510613589A CN105200181A CN 105200181 A CN105200181 A CN 105200181A CN 201510613589 A CN201510613589 A CN 201510613589A CN 105200181 A CN105200181 A CN 105200181A
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Abstract
The invention discloses a positioning control system for an oxygen lance device. The positioning control system comprises a frequency converter, a position encoder, a programmable logic controller (PLC) and an oxygen lance motor. The position encoder is used for detecting the lance position detection value of the oxygen lance device in real time and sending the detection value back to the PLC in the process that the oxygen lance motor drives the oxygen lance device to move. The PLC is used for generating a speed control instruction and a starting and stopping instruction matched with the current lance position difference according to a current lance position set value and the lance position detection value and sending the instructions to the frequency converter. The frequency converter at least controls the oxygen lance motor according to the speed control instruction and the starting and stopping instruction, so that the oxygen lance motor drives the oxygen lance device to continuously move to the lance position corresponding to the current lance position set value. It can be guaranteed that the oxygen lance device stably and rapidly arrives at the set lance position even in times of decelerated operation, and thus the technical problem of being low in positioning accuracy when an existing oxygen lance device drive system approaches a target position is solved. Hence, the whole-process positioning accuracy of the oxygen lance device is guaranteed.
Description
Technical field
The present invention relates to metallurgy industry converter steelmaking field, particularly relate to a kind of positioning control system of oxygen gun apparatus.
Background technology
Convertor steelmaking process is constantly to the chemical reaction process that oxygen blast in converter is smelted.Interior apart from bath surface certain altitude to stove under requiring oxygen gun apparatus during blowing, and carry out position adjustment with tap to tap time and steel grade change, the rifle position of oxygen gun apparatus not brigadier directly affects decarburization in steelmaking process, slag making, intensification and slag splashing technique, and then cause causing steel-making hit rate low, converting process is difficult to steadily.
Along with vector controlled and Torque Control are extensive in AC converter controls, the existing oxygen gun apparatus transmission system frequency transformer of band encoder that adopts carries out vector controlled more, but contriver finds in embody rule process, existing oxygen gun apparatus transmission system is minimum in low speed controls can only at about 10Hz, therefore, existing oxygen gun apparatus transmission system not high close to positioning precision during target location, and then have impact on the smoothness of converting process.
Summary of the invention
The embodiment of the present invention, by providing a kind of positioning control system of oxygen gun apparatus, solves existing oxygen gun apparatus transmission system close to the not high technical problem of positioning precision during target location, ensure that the omnidistance accuracy that oxygen gun apparatus is located.
The positioning control system of a kind of oxygen gun apparatus that the embodiment of the present invention provides, comprising: frequency transformer, position coder, programmable logic controller, oxygen rifle motor;
Described position coder, carries out in moving process for oxygen gun apparatus described in described oxygen rifle driven by motor, detects the rifle position detected value of described oxygen gun apparatus in real time and is returned to described programmable logic controller;
Described programmable logic controller, for generating according to current rifle position set(ting)value and described rifle position detected value with the rate control instruction of current rifle potential difference adaptation and start and stop instruction and sending to described frequency transformer;
Described frequency transformer, at least oxygen rifle motor according to described rate control instruction and described start and stop instruction control, makes oxygen gun apparatus described in described oxygen rifle driven by motor continue to move to rifle position corresponding to described current rifle position set(ting)value.
Preferably, described positioning control system also comprises: be arranged on the speed encoder on described oxygen rifle motor, the speed data output terminal of described speed encoder accesses described frequency transformer;
Wherein, described speed encoder, for oxygen rifle motor described in Real-Time Monitoring actual motion speed and be returned to described frequency transformer;
Wherein, described frequency transformer, for jointly calculating output frequency and the Driving Torque of described frequency transformer according to described rate control instruction and described actual motion speed, described oxygen rifle motor operates according to described output frequency and described Driving Torque.
Preferably, described positioning control system also comprises at least one active station, and described active station is connected with described programmable logic controller,
Wherein, described active station, for obtaining the real time data of described oxygen gun apparatus and described oxygen rifle motor from described programmable logic controller, wherein, described real time data be used for described active station carry out storing, analyze, show in one or more;
Wherein, described active station, also for gathering the control action of user to described programmable logic controller, makes described programmable logic controller respond manipulation steering order corresponding to described control action, to control described oxygen rifle motor rotation.
Preferably, described programmable logic controller comprises PLC mainframe, and described PLC mainframe comprises: mainframe CPU and the first communication module;
Described mainframe CPU is connected to described active station by described first communication module and exchange board successively, and described active station is connected with described programmable logic controller.
Preferably, described position coder is arranged on the winching barrel of described oxygen gun apparatus, the position data output terminal of described position coder is connected to described mainframe CPU, makes described position coder real-time monitor described rifle position detected value and is transmitted back in the described mainframe CPU of described programmable logic controller.
Preferably, described programmable logic controller also comprises: the second communication module, and described position data output terminal accesses described mainframe CPU by described second communication module.
Preferably, described frequency transformer accesses described mainframe CPU by described second communication template, and wherein, described rate control instruction and described start and stop instruction are sent to described frequency transformer by described second communication template.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
1, owing to have employed rifle position detected value and current rifle position set(ting)value calculates rate control instruction and the start and stop instruction that should issue frequency transformer in different rifle potential difference, frequency transformer at least controls rotating speed and the torque of oxygen rifle motor based on rate control instruction, frequency transformer performs start and stop instruction, control the when entry into service of oxygen rifle motor, and shut down at the current rifle position set(ting)value time control oxygen rifle motor of arrival.Thus, realizing the control of oxygen rifle motor is that the logic control of PLC combines with the vector controlled of frequency transformer, make to allow oxygen gun apparatus can according to non-linear slope action in moving process, even if also can to ensure that oxygen gun apparatus stablizes the position, rifle position arriving fast setting when running slowly, solve existing oxygen gun apparatus transmission system close to the not high technical problem of positioning precision during target location.And then ensure that the omnidistance accuracy that oxygen gun apparatus is located, and then eliminate converter not high brought impact of oxygen gun apparatus positioning precision in smelting process, the smoothness in converting process improves.
2, the actual motion speed owing to being arranged on the speed encoder detection oxygen rifle motor on oxygen rifle motor returns to frequency transformer, thus frequency transformer exports the output frequency of oxygen supply rifle motor and the actual motion velocity correlation of Driving Torque and oxygen rifle motor, more tally with the actual situation, therefore, it is possible to improve the positioning precision of oxygen gun apparatus further, can by Positioning Precision Control at about 2cm, far away higher than existing 10cm.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the control schematic diagram of embodiment of the present invention positioning control system;
Fig. 2 is the network connection diagram of embodiment of the present invention positioning control system.
Embodiment
In order to solve existing oxygen gun apparatus transmission system close to the not high technical problem of positioning precision during target location, embodiments provide a kind of positioning control system of oxygen gun apparatus, general thought is as follows:
The rifle position detected value detected in real time is passed back programmable logic controller by position coder.Programmable logic controller sends start and stop instruction and rate control instruction through logical calculated to frequency transformer.Then frequency transformer passes to oxygen rifle motor as driving side according to the electric energy that the instruction of programmable logic controller changes fixing AC power into change of frequency, have certain torque.Oxygen rifle motor drives oxygen gun apparatus to move again, arrives rifle position corresponding to each rifle position set(ting)value in the most stable the fastest mode.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Shown in figure 1 and Fig. 2, the positioning control system of a kind of oxygen gun apparatus 5 that the embodiment of the present invention provides, comprising: frequency transformer 1, position coder 2, programmable logic controller 3, oxygen rifle motor 4.
Oxygen gun apparatus 5 is driven to carry out in moving process at oxygen rifle motor 4, position coder 2 detects the rifle position detected value of oxygen gun apparatus 5 in real time and is returned to programmable logic controller 3, and programmable logic controller 3 sends to frequency transformer 1 after calculating rate control instruction corresponding to current rifle potential difference and start and stop instruction according to current rifle position set(ting)value and rifle position detected value; Frequency transformer 1, at least based on rate control instruction and start and stop instruction control oxygen rifle motor 4, makes oxygen rifle motor 4 drive oxygen gun apparatus 5 to continue to move to rifle position corresponding to current rifle position set(ting)value.
By above-mentioned programmable logic controller 3, need each rifle position set(ting)value obtained according to manufacturing technique requirent in oxygen blast smelting process, then current for the position coder 2 rifle position detected value passed back and current rifle position preset value calculation are gone out rifle potential difference by programmable logic controller 3, concrete, rifle potential difference=rifle position detected value deducts the absolute value of rifle position set(ting)value.Then, programmable logic controller 3 is according to calculating travelling speed needed for rifle potential difference determination oxygen gun apparatus 5, and the rate control instruction that needed for corresponding generation, travelling speed is corresponding and start and stop instruction, then frequency transformer 1 is according to the given output frequency to oxygen rifle motor 4 of rate control instruction and Driving Torque, then oxygen rifle motor 4 rotates according to the given output frequency of frequency transformer 1 and Driving Torque, and what drive oxygen gun apparatus 5 fast and stable navigates to current rifle position set(ting)value with the speed in instruction.And frequency transformer 1 starts the running of oxygen rifle motor 4 according to start and stop instruction and stops the running of oxygen rifle motor 4.
Concrete, in order to realize the up-and-down movement of oxygen gun apparatus 5, oxygen gun apparatus 5 includes lifting device, for the rotation of oxygen rifle motor 4 being converted to the vertical translation of oxygen gun apparatus 5, lifting device contains winching barrel, wireline, stopper and trailer wagon etc., concrete, the structure of lifting device with reference to prior art, can not limit herein.
Further, described positioning control system also comprises the speed encoder 6 be arranged on oxygen rifle motor 4, speed encoder 6 for Real-Time Monitoring oxygen rifle motor 4 actual motion speed and be returned to frequency transformer 1.Then frequency transformer 1 calculates output frequency and the Driving Torque of frequency transformer 1 jointly based on the actual motion speed of rate control instruction and oxygen rifle motor 4, and oxygen rifle motor 4 operates according to the output frequency calculated and Driving Torque.Thus oxygen rifle motor 4 is enough located more fast and accurately.
Concrete, speed encoder 6 is arranged on the rotor on oxygen rifle motor 4, the speed data output terminal access frequency transformer 1 of speed encoder 6.Thus speed encoder 6 can detect the actual motion speed of oxygen rifle motor 4 in real time and be transferred in frequency transformer 1.
Further, described positioning control system also comprises at least one active station 7, and every platform active station 7 is connected with programmable logic controller 3.Active station 7 obtains the real time data of oxygen gun apparatus 5 and oxygen rifle motor 4 from programmable logic controller 3, and active station 7 is for carrying out one or more actions in the storage of real time data, analysis, display.So that oxygen rifle action and positioning scenarios can be being monitored in real time.Active station 7 is also for gathering the control action of user to programmable logic controller 3, make programmable logic controller 3 respond the manipulation steering order corresponding to control action of user to control the running of oxygen rifle motor 4, reach the action intervening manipulation oxygen lance lifting.
In specific implementation process, active station 7 is placed in converter master control room, is connected between programmable logic controller 3 and active station 7 with exchange board 8, thus can at a distance through programmable logic controller 3 real time data.
Concrete, as shown in Figure 2, programmable logic controller 3 comprises PLC mainframe 3-1 and extension frame 3-2.The housing that PLC (ProgrammableLogicController, programmable logic controller) mainframe 3-1, extension frame 3-2 and exchange board 8 form programmable logic controller 3 is contained in electric panel room.Wherein, PLC mainframe 3-1 comprises: mainframe CPU, the first communication module, the second communication module.Specifically, the first communication module and the second communication module are the template of different communication function, and such as, the first communications module can be CP443-1 communication module, and the second communication module can be CP443-5 communication module.But be not limited to above-mentioned citing.
First communication module and the second communication module are specifically with reference to following detailed description:
First communication module, for the access of active station 7.Specifically, mainframe CPU3-1 is connected to active station 7 by the first communication module and exchange board 8 successively, realizes the connection between active station 7 and programmable logic controller 3.
Second communication module, for the signal input part of the position data output terminal of position coder 2, frequency transformer 1 all by the second communication module access host frame CPU, on-the-spot position coder 2 can carry out data communication by the second communication module and mainframe CPU.Rate control instruction is sent to frequency transformer by second communication template by programmable logic controller 3.
Concrete, position coder 2 is arranged on the winching barrel of oxygen gun apparatus, the position data output terminal of position coder 2 is connected to mainframe CPU, more specifically, position coder 2 can be connected with main PLC by the mode of DP bus-optical fiber-DP bus and to make position coder 2 Real-Time Monitoring cylinder rotate the change in location produced and the rifle position detected value obtained, and is transmitted back in the mainframe CPU of programmable logic controller 3 by rifle position detected value.
In specific implementation process, in order to ensure the normal operation of oxygen lance lifting in converter steelmaking, shown in figure 2, there are the using and the reserved two to overlap positioning control system to the control of oxygen gun apparatus, wherein, have two operator's console 7, two frequency transformers, 1, two position coders, 2, one group of extension frame 3-2.Wherein, two operator's console are all connected to the mainframe of programmable logic controller 3 by same mutual machine, two frequency transformers 1 are all connected to the mainframe of programmable logic controller 3 by bus, two position coders 2 are also connected to the mainframe of programmable logic controller 3 by bus.
1, owing to have employed rifle position detected value and current rifle position set(ting)value calculates rate control instruction and the start and stop instruction that should issue frequency transformer in different rifle potential difference, frequency transformer at least controls rotating speed and the torque of oxygen rifle motor based on rate control instruction, frequency transformer performs start and stop instruction, control the when entry into service of oxygen rifle motor, and shut down at the current rifle position set(ting)value time control oxygen rifle motor of arrival.Thus, realizing the control of oxygen rifle motor is that the logic control of PLC combines with the vector controlled of frequency transformer, make to allow oxygen gun apparatus can according to non-linear slope action in moving process, even if also can to ensure that oxygen gun apparatus stablizes the position, rifle position arriving fast setting when running slowly, solve existing oxygen gun apparatus transmission system close to the not high technical problem of positioning precision during target location.And then ensure that the omnidistance accuracy that oxygen gun apparatus is located, and then eliminate converter not high brought impact of oxygen gun apparatus positioning precision in smelting process, the smoothness in converting process improves.
2, the actual motion speed owing to being arranged on the speed encoder detection oxygen rifle motor on oxygen rifle motor returns to frequency transformer, thus frequency transformer exports the output frequency of oxygen supply rifle motor and the actual motion velocity correlation of Driving Torque and oxygen rifle motor, more tally with the actual situation, therefore, it is possible to improve the positioning precision of oxygen gun apparatus further, can by Positioning Precision Control at about 2cm, far away higher than existing 10cm.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. a positioning control system for oxygen gun apparatus, is characterized in that, comprising: frequency transformer, position coder, programmable logic controller, oxygen rifle motor;
Described position coder, carries out in moving process for oxygen gun apparatus described in described oxygen rifle driven by motor, detects the rifle position detected value of described oxygen gun apparatus in real time and is returned to described programmable logic controller;
Described programmable logic controller, for generating according to current rifle position set(ting)value and described rifle position detected value with the rate control instruction of current rifle potential difference adaptation and start and stop instruction and sending to described frequency transformer;
Described frequency transformer, at least oxygen rifle motor according to described rate control instruction and described start and stop instruction control, makes oxygen gun apparatus described in described oxygen rifle driven by motor continue to move to rifle position corresponding to described current rifle position set(ting)value.
2. positioning control system as claimed in claim 1, it is characterized in that, described positioning control system also comprises: be arranged on the speed encoder on described oxygen rifle motor, the speed data output terminal of described speed encoder accesses described frequency transformer;
Wherein, described speed encoder, for oxygen rifle motor described in Real-Time Monitoring actual motion speed and be returned to described frequency transformer;
Wherein, described frequency transformer, for jointly calculating output frequency and the Driving Torque of described frequency transformer according to described rate control instruction and described actual motion speed, described oxygen rifle motor operates according to described output frequency and described Driving Torque.
3. positioning control system as claimed in claim 2, it is characterized in that, described positioning control system also comprises at least one active station, and described active station is connected with described programmable logic controller,
Wherein, described active station, for obtaining the real time data of described oxygen gun apparatus and described oxygen rifle motor from described programmable logic controller, wherein, described real time data be used for described active station carry out storing, analyze, show in one or more;
Wherein, described active station, also for gathering the control action of user to described programmable logic controller, makes described programmable logic controller respond manipulation steering order corresponding to described control action, to control described oxygen rifle motor rotation.
4. positioning control system as claimed in claim 3, it is characterized in that, described programmable logic controller comprises PLC mainframe, and described PLC mainframe comprises: mainframe CPU and the first communication module;
Described mainframe CPU is connected to described active station by described first communication module and exchange board successively, and described active station is connected with described programmable logic controller.
5. positioning control system as claimed in claim 4, it is characterized in that, described position coder is arranged on the winching barrel of described oxygen gun apparatus, the position data output terminal of described position coder is connected to described mainframe CPU, makes described position coder real-time monitor described rifle position detected value and is transmitted back in the described mainframe CPU of described programmable logic controller.
6. positioning control system as claimed in claim 5, it is characterized in that, described programmable logic controller also comprises: the second communication module, and described position data output terminal accesses described mainframe CPU by described second communication module.
7. positioning control system as claimed in claim 6, it is characterized in that, described frequency transformer accesses described mainframe CPU by described second communication template, and wherein, described rate control instruction and described start and stop instruction are sent to described frequency transformer by described second communication template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613589.7A CN105200181A (en) | 2015-09-24 | 2015-09-24 | Positioning control system for oxygen lance device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613589.7A CN105200181A (en) | 2015-09-24 | 2015-09-24 | Positioning control system for oxygen lance device |
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| CN105200181A true CN105200181A (en) | 2015-12-30 |
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| CN201510613589.7A Pending CN105200181A (en) | 2015-09-24 | 2015-09-24 | Positioning control system for oxygen lance device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110791609A (en) * | 2019-12-19 | 2020-02-14 | 北京首钢股份有限公司 | Converter oxygen lance positioning method |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101935737A (en) * | 2010-09-07 | 2011-01-05 | 中冶华天南京自动化工程有限公司 | Device for integrally detecting height of oxygen lance height and looseness and tightness of steel wire rope of oxygen gun |
| 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 |
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2015
- 2015-09-24 CN CN201510613589.7A patent/CN105200181A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935737A (en) * | 2010-09-07 | 2011-01-05 | 中冶华天南京自动化工程有限公司 | Device for integrally detecting height of oxygen lance height and looseness and tightness of steel wire rope of oxygen gun |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110791609A (en) * | 2019-12-19 | 2020-02-14 | 北京首钢股份有限公司 | Converter oxygen lance positioning method |
| CN110791609B (en) * | 2019-12-19 | 2021-08-27 | 北京首钢股份有限公司 | Converter oxygen lance positioning method |
| 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 |
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Effective date of registration: 20170706 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Applicant after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Applicant before: Wuhan Iron & Steel (Group) Corp. |
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