CN113736951A - Off-line centering device for converter oxygen lance - Google Patents
Off-line centering device for converter oxygen lance Download PDFInfo
- Publication number
- CN113736951A CN113736951A CN202010474080.XA CN202010474080A CN113736951A CN 113736951 A CN113736951 A CN 113736951A CN 202010474080 A CN202010474080 A CN 202010474080A CN 113736951 A CN113736951 A CN 113736951A
- Authority
- CN
- China
- Prior art keywords
- swing arm
- oxygen lance
- scale
- converter
- centering device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000001301 oxygen Substances 0.000 title claims abstract description 65
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 65
- 238000005259 measurement Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000003723 Smelting Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- 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 invention relates to an off-line centering device for a converter oxygen lance, which comprises: the device comprises a swing arm, a cross shaft scale, a longitudinal shaft scale and a base; the off-line centering device for the oxygen lance of the converter provided by the invention can reduce the influence of the off-line replacement on-line centering period of the oxygen lance on the smelting production period of the converter. The aim of reliable, safe and practical centering is realized in the centering process, the problem of offline centering of the oxygen lance in the production practice of a steel mill is solved, the influence of online centering on production interruption is avoided, and the production efficiency of the converter is improved; provides good reference and reference for smelting production and maintenance of the converter, and has strong practical application value.
Description
Technical Field
The invention relates to an offline centering device for a converter oxygen lance, belonging to the technical field of metallurgical equipment.
Background
In the converter steelmaking process, the oxygen lance has the main functions of blowing oxygen into the converter to decarbonize molten steel, increase smelting strength and realize slag splashing furnace protection by blowing nitrogen. The oxygen lance device can be generally designed to realize quick lance change. One oxygen lance is provided with a fixed lifting track, A and B oxygen lance transverse moving trolleys are arranged, and one oxygen lance is arranged on each trolley and can be rapidly transversely moved to the fixed lifting track on line, namely the center of the converter oxygen lance is switched.
At present, the conventional production oxygen lance for converter steelmaking is used in a mode that a lance A blows nitrogen to splash slag and a lance B blows oxygen to smelt. The service life of the lance head of the oxygen lance is limited, and the lance head needs to be periodically replaced off line. The existing oxygen lance replacing process has the defects that: (1) the conventional quick lance replacement design only designs a quick plug-in connector and positioning equipment on an oxygen lance trolley, and does not consider the deformation of the oxygen lance and the positioning deviation of the trolley, so that the oxygen lance needs to adjust the position of a center line on line (namely, to be centered) to ensure that the gap between a lance body and a lower lance hole of a converter vaporization smoke hood is uniform in the whole lance discharging process; (2) based on division of labor, the oxygen lance has short service life, the converter needs to be shut down in the off-line replacement process, and the on-line centering time is long; resulting in interruption of the converter smelting.
The original oxygen blowing lance B gun replacement and centering process is as follows: firstly, stopping blowing of an old gun, lifting the old gun to the highest position, transversely moving the oxygen gun to a gun changing position (ensuring safe anti-falling), unloading the old gun, loading a new gun, transversely moving the new gun to a processing position, centering and adjusting a lower gun hole, and controlling the error within the range of +/-20 mm; the whole process takes more than 2 hours.
Disclosure of Invention
The invention aims to solve the technical problems that: overcomes the defects of the technology and provides a device which can be centered when the oxygen lance is positioned at a lance changing position after being off-line.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an off-line centering device for an oxygen lance of a converter comprises: the device comprises a swing arm, a cross shaft scale, a longitudinal shaft scale and a base; the middle part of the swing arm is hinged on the base and can swing between a measuring position and a standby position; one end of the swing arm is provided with a C-shaped head; when the swing arm is positioned at the measuring position, the oxygen lance is positioned at the center of the C-shaped head; the transverse axis scale and the longitudinal axis scale are arranged on the swing arm and are perpendicular to each other; the cross shaft scale extends to form a cross shaft measuring block, and the longitudinal shaft scale extends to form a longitudinal shaft measuring block; when the swing arm is positioned at the measuring position, the transverse axis measuring block and the longitudinal axis measuring block lean against the oxygen lance at an interval of 90 degrees; the horizontal axis scale and the vertical axis scale can be adjusted to be relative to the position of the swing arm along a plane parallel to the swing of the swing arm, and the adjusting directions of the horizontal axis scale and the vertical axis scale are perpendicular to each other.
The scheme is further improved in that: the other end of the swing arm is provided with a balancing weight.
The scheme is further improved in that: the base is provided with a measuring position stop block and a standby position stop block; the measuring position stop block limits the continuous swinging of the swing arm after swinging to the measuring position, and the standby position stop block limits the continuous swinging of the swing arm after swinging to the standby position.
The scheme is further improved in that: the scale with the size is arranged beside the scale with the cross shaft and the scale with the longitudinal shaft.
The scheme is further improved in that: the base is provided with a positioning lock pin which can lock the swing arm at a measuring position and a standby position.
The scheme is further improved in that: the measurement bit is spaced 90 degrees from the standby bit.
The scheme is further improved in that: an encoder is arranged on the traversing trolley of the oxygen lance; and the encoder is output to a stop control system of the traverse trolley.
The off-line centering device for the oxygen lance of the converter provided by the invention can reduce the influence of the off-line replacement on-line centering period of the oxygen lance on the smelting production period of the converter. The aim of reliable, safe and practical centering is realized in the centering process, the problem of offline centering of the oxygen lance in the production practice of a steel mill is solved, the influence of online centering on production interruption is avoided, and the production efficiency of the converter is improved; provides good reference and reference for smelting production and maintenance of the converter, and has strong practical application value.
Drawings
Fig. 1 is a schematic top view of a preferred embodiment of the present invention.
Fig. 2 is a schematic side view of the structure of fig. 1.
Fig. 3 is a schematic structural view of a preferred embodiment of the invention in a top-down working state.
Fig. 4 is a diagram illustrating a comparison state of swing positions of a swing arm according to a preferred embodiment of the present invention.
Detailed Description
Examples
The off-line converter oxygen lance centering device of the embodiment, as shown in fig. 1 and 2, comprises: the device comprises a swing arm 6, a cross axis scale 8, a longitudinal axis scale 9 and a base 3; the middle part of the swing arm 6 is hinged with the base 3 through a rotary support 10, and the swing arm 6 can swing between a measuring position and a standby position; one end of the swing arm 6 is provided with a C-shaped head; when the swing arm 6 is positioned at the measuring position, the oxygen lance 5 is positioned at the center of the C-shaped head; a cross axis scale 8 and a longitudinal axis scale 9 are arranged on the swing arm 6; a transverse axis measuring block 13 extends from the transverse axis scale 8, and a longitudinal axis measuring block 14 extends from the longitudinal axis scale 9; when the swing arm 6 is positioned at the measuring position, the transverse axis measuring block 13 and the longitudinal axis measuring block 14 are leaned against the oxygen lance 5 at an interval of 90 degrees; the cross axis scale 8 and the vertical axis scale 9 are both mounted on the swing arm 6 through adjusting bolts, the cross axis scale 8 and the vertical axis scale 9 can both adjust the position of the swing arm 6 along a plane parallel to the swing of the swing arm 6, and the adjusting directions of the cross axis scale 8 and the vertical axis scale 9 are perpendicular to each other. The adjustment is achieved by means of adjusting bolts.
The other end of the swing arm 6 is provided with a counterweight 7.
The base 3 is provided with a measuring position stop block 12 and a standby position stop block 11; the measuring position stop block 12 limits the continuous swing of the swing arm 6 after swinging to the measuring position, and the standby position stop block 11 limits the continuous swing of the swing arm 6 after swinging to the standby position.
The scale 8 of the horizontal axis and the scale 9 of the vertical axis are provided with size scales.
The base 3 is provided with a positioning lock pin 15, and the swing arm 6 can be locked at a measuring position and a standby position through the matching of the positioning lock pin 15, the measuring position stop 12 and the standby position stop 11.
When the off-line centering device for the oxygen lance of the converter is used, the stopping position of the oxygen lance at each lance position change is ensured to be accurate and repeatable. The limit stop position adopted in the prior art can change along with the inertia of the vehicle body, the limit state and the control of the motor every time. Therefore, the encoder 2 is added on the wheels of the traversing carriage 1 for the rest position control feedback of the carriage, and as shown in figure 3, the rest position precision of the lance changing position of the oxygen lance can be controlled within the range of +/-5 mm.
When the oxygen lance ascends to the upper limit and moves transversely to the lance changing position, the converter oxygen lance off-line centering device of the embodiment is arranged at the position which is about 500mm above the horizontal position of the spray head at the lower part of the oxygen lance body. The C-shaped head simulates a lower gun hole of the converter oxygen gun, the center point of the C-shaped head is consistent with the horizontal coordinate of the lower gun hole of the converter oxygen gun, and the vertical coordinate is consistent with the center of the oxygen gun at the transverse shifting gun position of the oxygen gun. The swing arm 6 swings to the measurement position when measurement and adjustment are performed, and swings back to the standby position when measurement is not performed.
When an old gun at the lower line or a new gun at the upper line moves to a gun changing position, the positioning lock pin 15 at the standby position is pulled out, the swing arm 6 is swung to a measuring position and locked, the transverse axis scale 8 and the longitudinal axis scale 9 are moved, the transverse axis measuring block 13 and the longitudinal axis measuring block 14 are contacted with the oxygen lance 5, and the measured data are read and recorded as the basis of the positioning adjustment of the oxygen lance. Original data measured before the old offline gun is offline is used as reference for subsequent adjustment, and after the new online gun is online, the measured data is compared with deviation adjustment requirements to talkback and feed back an upper oxygen gun adjuster, and the position of the gun is adjusted by adjusting an adjusting bolt on an oxygen gun trolley, so that the condition that +/-5 mm of the final positioning of the oxygen gun meets the requirement of +/-20 mm of online centering standard is ensured.
As shown in fig. 4, the measurement bit is spaced 90 degrees from the standby bit.
In the offline and online processes of the oxygen lance, a recent reference is provided for the adjustment of a subsequent new lance through the measurement record of centering data before offline; the centering measurement adjustment after the new lance is on-line refers to the data before the old lance is off-line on one hand, verifies the total offset on the other hand, and controls the centering precision of the new lance at a higher level; and (3) after the oxygen lance is subjected to off-line adjustment and goes on line, the oxygen lance hole is subjected to lifting verification to ensure that the requirements of production and use are finally met, and meanwhile, the condition exceeding the centering requirement is adjusted and recorded again when the oxygen lance is centered on line, and the record is used as a trigger reason for adjusting the center positioning of the C-shaped head of the converter oxygen lance off-line centering device.
The present invention is not limited to the above-described embodiments. All technical solutions formed by equivalent substitutions fall within the protection scope of the claims of the present invention.
Claims (7)
1. An off-line centering device for an oxygen lance of a converter is characterized by comprising: the device comprises a swing arm, a cross shaft scale, a longitudinal shaft scale and a base; the middle part of the swing arm is hinged on the base and can swing between a measuring position and a standby position; one end of the swing arm is provided with a C-shaped head; when the swing arm is positioned at the measuring position, the oxygen lance is positioned at the center of the C-shaped head; the transverse axis scale and the longitudinal axis scale are arranged on the swing arm and are perpendicular to each other; the cross shaft scale extends to form a cross shaft measuring block, and the longitudinal shaft scale extends to form a longitudinal shaft measuring block; when the swing arm is positioned at the measuring position, the transverse axis measuring block and the longitudinal axis measuring block lean against the oxygen lance at an interval of 90 degrees; the cross shaft scale and the longitudinal shaft scale are both installed on the swing arm through bolts, the cross shaft scale and the longitudinal shaft scale can be parallel to the position, relative to the swing arm, of the swing arm in a swinging plane adjustment mode, and the adjusting directions of the cross shaft scale and the longitudinal shaft scale are perpendicular to each other.
2. The off-line centering device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: the other end of the swing arm is provided with a balancing weight.
3. The off-line centering device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: the base is provided with a measuring position stop block and a standby position stop block; the measuring position stop block limits the continuous swinging of the swing arm after swinging to the measuring position, and the standby position stop block limits the continuous swinging of the swing arm after swinging to the standby position.
4. The off-line centering device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: the scale with the size is arranged beside the scale with the cross shaft and the scale with the longitudinal shaft.
5. The off-line centering device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: the base is provided with a positioning lock pin which can lock the swing arm at a measuring position and a standby position.
6. The off-line centering device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: the measurement bit is spaced 90 degrees from the standby bit.
7. The off-line centering device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: an encoder is arranged on the traversing trolley of the oxygen lance; and the encoder is output to a stop control system of the traverse trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474080.XA CN113736951A (en) | 2020-05-29 | 2020-05-29 | Off-line centering device for converter oxygen lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474080.XA CN113736951A (en) | 2020-05-29 | 2020-05-29 | Off-line centering device for converter oxygen lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113736951A true CN113736951A (en) | 2021-12-03 |
Family
ID=78724563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010474080.XA Pending CN113736951A (en) | 2020-05-29 | 2020-05-29 | Off-line centering device for converter oxygen lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113736951A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10017394A1 (en) * | 2000-04-07 | 2001-10-18 | Volkswagen Ag | Method and device for gauging and adjusting the A and C axes of a five-axis milling machine includes path adjusters for fastening a barrel gauge in a milling spindle tool holding fixture and moving it axially. |
| CN201148442Y (en) * | 2008-01-03 | 2008-11-12 | 中冶华天工程技术有限公司 | Device for fixing and adjusting oxygen lance |
| CN203360484U (en) * | 2013-06-08 | 2013-12-25 | 新疆八一钢铁股份有限公司 | Correction and adjustment device for converter oxygen lance |
| CN103726800A (en) * | 2013-12-26 | 2014-04-16 | 北京市三一重机有限公司 | Drill rod positioning device and hydraulic pile machine |
| US20150211310A1 (en) * | 2012-09-26 | 2015-07-30 | Sandvik Intellectual Property Ab | Method of interconnecting a drill rod with a drill string by means of a threaded connection, rod handling system and drill rig |
| CN207636012U (en) * | 2017-12-19 | 2018-07-20 | 天水锻压机床(集团)有限公司 | Pipe end alignment device |
| CN208040328U (en) * | 2018-03-21 | 2018-11-02 | 中海石油(中国)有限公司湛江分公司 | A kind of well head auxiliary casing centralization seat slip system |
| CN110643782A (en) * | 2019-11-05 | 2020-01-03 | 联峰钢铁（张家港）有限公司 | Novel tool for installing oxygen lance head |
-
2020
- 2020-05-29 CN CN202010474080.XA patent/CN113736951A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10017394A1 (en) * | 2000-04-07 | 2001-10-18 | Volkswagen Ag | Method and device for gauging and adjusting the A and C axes of a five-axis milling machine includes path adjusters for fastening a barrel gauge in a milling spindle tool holding fixture and moving it axially. |
| CN201148442Y (en) * | 2008-01-03 | 2008-11-12 | 中冶华天工程技术有限公司 | Device for fixing and adjusting oxygen lance |
| US20150211310A1 (en) * | 2012-09-26 | 2015-07-30 | Sandvik Intellectual Property Ab | Method of interconnecting a drill rod with a drill string by means of a threaded connection, rod handling system and drill rig |
| CN203360484U (en) * | 2013-06-08 | 2013-12-25 | 新疆八一钢铁股份有限公司 | Correction and adjustment device for converter oxygen lance |
| CN103726800A (en) * | 2013-12-26 | 2014-04-16 | 北京市三一重机有限公司 | Drill rod positioning device and hydraulic pile machine |
| CN207636012U (en) * | 2017-12-19 | 2018-07-20 | 天水锻压机床(集团)有限公司 | Pipe end alignment device |
| CN208040328U (en) * | 2018-03-21 | 2018-11-02 | 中海石油(中国)有限公司湛江分公司 | A kind of well head auxiliary casing centralization seat slip system |
| CN110643782A (en) * | 2019-11-05 | 2020-01-03 | 联峰钢铁（张家港）有限公司 | Novel tool for installing oxygen lance head |
Non-Patent Citations (1)
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| 杨鸣: "在转炉氧枪系统中增设调枪和对中装置的实验", 《江苏冶金》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211203 |
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| RJ01 | Rejection of invention patent application after publication |