CN102703640A - Method of maintenance and lifting for moving section flue at converter mouth - Google Patents

Method of maintenance and lifting for moving section flue at converter mouth Download PDF

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Publication number
CN102703640A
CN102703640A CN2012101119470A CN201210111947A CN102703640A CN 102703640 A CN102703640 A CN 102703640A CN 2012101119470 A CN2012101119470 A CN 2012101119470A CN 201210111947 A CN201210111947 A CN 201210111947A CN 102703640 A CN102703640 A CN 102703640A
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CN
China
Prior art keywords
lifting
fire door
active segment
converter
flue
Prior art date
Application number
CN2012101119470A
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Chinese (zh)
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CN102703640B (en
Inventor
朱道付
程玉洲
张俊
周美初
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中国十七冶集团有限公司
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Priority to CN201210111947.0A priority Critical patent/CN102703640B/en
Publication of CN102703640A publication Critical patent/CN102703640A/en
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Publication of CN102703640B publication Critical patent/CN102703640B/en

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Abstract

The invention provides a method of maintenance and lifting for a moving section flue at a converter mouth and belongs to the technical field of equipment lifting. The method includes the steps of firstly, setting a lifting pulley set and a pulley set driving and hoisting device; secondly, distributing lifting steel wire ropes and lifting spots; and thirdly, removing a lifting device for the moving section flue at the converter mouth and the mouth moving section flue. A certain movement and lifting space for the mouth moving section flue and a 360-degree rotation function of a converter are fully utilized in normal production of the converter and the mouth moving section flue, the lifting device is set and used reasonably, and accordingly upper parts of the mouth moving section flue can be moved into a converter feeding span with conveying conditions and large conveying space from the space above the converter mouth without removing the upper parts, the range of replacing and maintaining the mouth moving section flue is narrowed greatly. In addition, the method is fast and safe, removing efficiency is improved, maintenance cost is reduced, and maintenance time is reduced.

Description

Hanging method is removed in a kind of converter mouth active segment flue maintenance

Technical field

The invention belongs to the equipment hoisting technical field, relate in particular to a kind of converter mouth active segment flue maintenance and remove hanging method.

Background technology

At present; In metallurgical converter steel-making, run into because of the movable evaporated flue production serious wear of fire door and need situation its replacing through regular meeting; But technique platform, the equipment layout flyover in converter zone are more, and the movable evaporated flue of fire door is arranged in converter and fixedly between the flue section, solid space is very compact narrow and small; Change the medium pipeline that needs to remove this flue supports and top fixedly influences on flue section and the hoisting passage part technique platform at that time usually and be connected with fixing flue section; So that let the movable flue of plug for outlet remove the passage of lifting transportation, this usual method defective is: change the movable flue of fire door for removing, the technique platform of dismounting and top flue workplace are big; The dismounting parts are many; Not only, influence owner's plant produced, the input that also can strengthen the engineering cost of overhaul because of the maintainer and the use mechanical means of the big input of dismounting workplace because of the dismounting scope prolongs the repair time greatly.

Summary of the invention

The purpose of this invention is to provide a kind of converter mouth active segment flue maintenance and remove hanging method, these hanging method concrete steps are following:

(1) lifting tackleblock and tackleblock are set and drive winding plant:

Fire door active segment flue 4 is positioned at directly over converter 3 fire doors, and converter 3 is supported on the basis converter 1 through chock 2, and converter 3 can be under the support of chock 2 360 0Rotation, fire door active segment flue 4 are fixed on the supporting seat 6 of fixing flue section 8 through active segment flue lifting device 5; On two-layer platform 7 behind the converter stove, place the driving windlass 13 that is used to drive 20t tackleblock 15; 20t tackleblock 15 is fixed on the oxygen rifle landing beam 12; Haulage cable 14 nothings that point of fixity is selected to guarantee to go up and down on the 20t tackleblock 15 are kept off directly affacting on the fire door active segment flue 4 of hindering, and satisfy the lifting requirements that next step lifts fire door active segment flue 4;

(2) arrange lifting wireline and suspension centre:

One end is fixed on the lifting wireline 18 on the 20t tackleblock 15; Be fixedly attached to center, fire door active segment flue 4 upper back; The master on the lifting main hook 9 that will feed in raw material again on the inter-bank car 11 lifts rope 16 and is fixedly attached to fire door active segment flue 4 front upper part centers; Open respectively then and drive windlass 13 and driving main hook 9, make lifting wireline 18 and the main rope 16 that lifts be in little strained condition, for the dismounting of next step lifting device 5 is prepared;

(3) remove fire door active segment flue lifting device:

Lifting wireline 18 and the main rope 16 that lifts hoist respectively; Till working the lifting device 5 be raised to fire door active segment flue 4 and not bearing the gravity of fire door active segment flue 4; And the weight of fire door active segment flue 4 is shared by lifting wireline 18 and the main rope 16 that lifts jointly at this moment; Remove lifting device 5 then, remove the fixed constraints state of fire door active segment flue 4;

(4) fire door active segment flue is removed:

Lifting wireline 18 and the main rope 16 that lifts progressively descend; Make on the vertical fire door that is placed on converter 3 of fire door active segment flue 4; This moment fire door active segment flue 4 weight respectively by lifting wireline 18, mainly lift rope 16 and converter 3 and support three strength and share; Rotation converter 3; Lift wireline 18 and the main rope 16 that lifts simultaneously according to the state of converter 3,4 rotations of fire door active segment flue and the stressing conditions wireline that descends respectively, satisfy fire door active segment flue 4 under the state that does not receive big obstruction power with converter 3 together rotate to converter feed in raw material stride in, make converter 3 fire doors rotate to 90 0Let plug for outlet active segment flue 4 active maximum spaces; The lifting auxiliary hook 10 of the reinforced inter-bank car 11 of decline; Make the setting rope 17 that lifts above that be connected to the suspension centre place that fire door active segment flue 4 lifts wireline 18; Be attached thereto firmly and the auxiliary hook 10 that hoists makes pair lift rope 17 to be in strained condition, the windlass playback of reverse drive tackleblock 15 lifting wireline 18 then makes the power of this suspension centre transfer to pair and lifts on the rope 17; Removal lifting wireline 18 hoists simultaneously, and pair lifts rope 17 and main lifting restricts 16; Upgrade fire door active segment flue 4, move driving 11 fire door active segment flue 4 is lifted to specified location, accomplish the dismounting lifting work of fire door active segment flue 4.

Hanging method is removed in a kind of converter mouth active segment flue maintenance provided by the present invention, has the space and the converter 360 of certain fire door active segment flue mobile lifting when making full use of converter and fire door active segment flue ordinary production between the two 0The function of rotation, has realized fire door active segment flue by the narrow and small converter bay in former space again through the setting and the utilization of rational tackle gear in conjunction with above 2 conditions; Under the prerequisite of not removing the movable evaporated flue upper member of fire door; Move in big reinforced the striding of converter of transport condition and transport space from the top of converter mouth, reduced to change the dismounting scope of this fire door active segment flue maintenance greatly, and fast and safely; Improve and remove work efficiency, reduce the cost of overhaul and reduced the repair time.The inventive method is provided with rationally, and is safe and reliable, effectively improved efficient and quality that the maintenance of converter mouth active segment flue is removed.

Description of drawings

Fig. 1 is the configuration of converter mouth active segment flue and arranges synoptic diagram.

Fig. 2 is that converter mouth active segment flue proposed by the invention is removed the lifting suspension centre and weight handling equipment is arranged synoptic diagram.

Fig. 3 is that converter mouth active segment flue proposed by the invention is removed one of hoisting process synoptic diagram.

Fig. 4 is that converter mouth active segment flue proposed by the invention is removed two of hoisting process synoptic diagram.

Fig. 5 is that converter mouth active segment flue proposed by the invention is removed three of hoisting process synoptic diagram.

Among the figure: 1, basis converter; 2, chock; 3, converter; 4, fire door active segment flue; 5, lifting device; 6, supporting seat; 7, converter rear portion two-layer platform; 8, converter fixed section flue; 9, lifting main hook; 10, lifting auxiliary hook; 11, reinforced inter-bank car; 12, oxygen rifle landing beam; 13, drive windlass; 14, haulage cable; 15,20t tackleblock; 16, the main rope that lifts; 17, pair lifts rope; 18, lifting wireline.

Embodiment

Hanging method is removed in a kind of converter mouth active segment flue maintenance provided by the present invention, and its construction procedure is: 1, lifting tackleblock and tackleblock are set drive winding plant; 2, arrange lifting wireline and suspension centre; 3, remove fire door active segment flue lifting device; 4, fire door active segment flue is removed.Concrete steps are following:

1, lifting tackleblock and tackleblock are set and drive winding plant:

Fire door active segment flue 4 is arranged in directly over converter 3 fire doors, and converter 3 is supported on the basis converter 1 through chock 2, and converter 3 can be under the support of chock 2 360 0Rotation.Fire door active segment flue 4 through its lifting device 5, is fixed on fixedly on 1 section 8 supporting seat 6 of flue.On two-layer platform 7 behind the converter stove, place the driving windlass 13 of 20t tackleblock 15, and 20t tackleblock 15 is fixed on the oxygen rifle landing beam 12, satisfy next step hanging apparatus that lifts fire door active segment flue 4 requirement (seeing accompanying drawing 1) is set.

2, arrange lifting wireline and suspension centre:

One end is fixed on the lifting wireline 18 on the tackleblock 15, is connected to center, fire door active segment flue 4 upper back, and with its fixation.The master on the lifting main hook 9 that will feed in raw material again on the inter-bank car 11 lifts rope 16 and is fixed on fire door active segment flue 4 front upper part centers, same and its fixation.Converter 3 is rotated to fire door position vertically upward, open respectively then and drive windlass 13 and driving main hook 9, make lifting wireline 18 and the main rope 16 that lifts be in little strained condition, remove for next step lifting device 5 and prepare.(seeing accompanying drawing 1).

3, remove fire door active segment flue lifting device:

Lifting wireline 18 and the main rope 16 that lifts hoist respectively; Till working the lifting device 5 be raised to fire door active segment flue 4 and not bearing the gravity of fire door active segment flue 4, and this moment, fire door active segment flue 4 weight was shared by lifting wireline 18 and the main rope 16 that lifts jointly.Remove lifting device 5 then, removed fire door active segment flue 4 fixed constraints states (seeing accompanying drawing 1,2).

4, fire door active segment flue is removed:

Progressively descend lifting wireline 18 and the main rope 16 that lifts make on the vertical fire door that is placed on converter 3 of fire door active segment flue 4, this moment fire door active segment flue 4 weight respectively by lifting wireline 18, mainly lift rope 16 and converter 3 and support three strength and share.Rotation converter 3; Lift wireline 18 and the main rope 16 that lifts simultaneously according to the state of converter 3,4 rotations of fire door active segment flue and the stressing conditions wireline that descends respectively; Satisfy fire door active segment flue 4 and under the state that does not receive big obstruction power, together rotate to the reinforced direction of striding of converter with converter 3; And progressively strengthen converter 3 and select gyration, rotate to 90 until fire door 0Let plug for outlet active segment flue 4 active maximum spaces.(seeing accompanying drawing 2,3).

The lifting auxiliary hook 10 of the reinforced inter-bank car 11 of decline; Make the setting rope 17 that lifts above that be connected to the suspension centre place that fire door active segment flue 4 lifts wireline 18; Be attached thereto firmly and the auxiliary hook 10 that hoists makes pair lift rope 17 to be in strained condition, the windlass playback of reverse drive tackleblock 15 lifting wireline 18 then makes the power of this suspension centre transfer to pair and lifts on the rope 17; Removal lifting wireline 18; The pair that hoists simultaneously lifts rope 17 and the main rope 16 that lifts, and upgrades fire door active segment flue 4, moves lifting auxiliary hook 10 and lifting main hook 9 then simultaneously fire door active segment flue 4 is moved to spacious position between reinforced span centre; Move driving 11 again fire door active segment flue 4 is lifted to specified location, realize the dismounting lifting work of fire door active segment flue 4.(seeing accompanying drawing 3,4,5)

Remove replacing at certain steelworks 60t converter evaporation cooling air flue and adopt present method construction; Flue zone dismounting amount is very little; Whole dismounting hoisting process operation implementation procedure is smooth; Make the movable flue dismounting replacing time of original fire door advance to 3 days by former 5 days, implementation result is very obvious, has reduced because of removing the parts scope greatly to producing the influence that recovery delays.Certain steelworks, successively 2 100t converter evaporation cooling air flues are removed to change and are adopted present method construction equally, and effect is fairly obvious, and dismounting efficient is high, product protection is good.

Claims (1)

1. hanging method is removed in a converter mouth active segment flue maintenance, it is characterized in that these hanging method concrete steps are following:
(1) lifting tackleblock and tackleblock are set and drive winding plant:
Fire door active segment flue (4) is positioned at directly over converter (3) fire door, and converter (3) is supported on the basis converter (1) through chock (2), and converter (3) can be under the support of chock (2) 360 0Rotation, fire door active segment flue (4) are fixed on the supporting seat (6) of fixing flue section (8) through active segment flue lifting device (5); Two-layer platform behind the converter stove (7) is gone up and is placed the driving windlass (13) that is used to drive 20t tackleblock (15); 20t tackleblock (15) is fixed on the oxygen rifle landing beam (12); What haulage cable (14) the nothing retaining that point of fixity selects assurance 20t tackleblock (15) to go up up-down hindered directly affacts on the fire door active segment flue (4), satisfies the lifting requirements that next step lifts fire door active segment flue (4);
(2) arrange lifting wireline and suspension centre:
One end is fixed on the lifting wireline (18) on the 20t tackleblock (15); Be fixedly attached to fire door active segment flue (4) center, upper back; Master on the last lifting main hook (9) of the inter-bank car (11) that will feed in raw material again lifts rope (16) and is fixedly attached to fire door active segment flue (4) front upper part center; Open respectively then and drive windlass (13) and driving main hook (9); Make lifting wireline (18) and master lift rope (16) and be in little strained condition, for the dismounting of next step lifting device (5) is prepared;
(3) remove fire door active segment flue lifting device:
Lifting wireline (18) and the main rope (16) that lifts hoist respectively; Till working the lifting device (5) be raised to fire door active segment flue (4) and not bearing the gravity of fire door active segment flue (4); And the weight of fire door active segment flue this moment (4) is lifted rope (16) and shares jointly with leading by lifting wireline (18); Remove lifting device (5) then, remove the fixed constraints state of fire door active segment flue (4);
(4) fire door active segment flue is removed:
Lifting wireline (18) and the main rope (16) that lifts progressively descend; Make on the vertical fire door that is placed on converter (3) of fire door active segment flue (4); The weight of fire door active segment flue this moment (4) lifts rope (16) by lifting wireline (18), master respectively and three strength of converter (3) support are shared; Rotation converter (3); Lift wireline (18) and main simultaneously and lift state that rope (16) rotates according to converter (3), fire door active segment flue (4) and the stressing conditions wireline that descends respectively; Satisfy in fire door active segment flue (4) rotates to together that converter is reinforced and stride with converter (3) under the state that does not receive big obstruction power, make converter (3) fire door rotate to 90 0Let plug for outlet active segment flue (4) active maximum space; The lifting auxiliary hook (10) of the reinforced inter-bank car (11) of decline; Make the setting rope (17) that lifts above that be connected to the suspension centre place that fire door active segment flue (4) lifts wireline (18); Be attached thereto firmly and the auxiliary hook that hoists (10) makes pair lift rope (17) to be in strained condition; The windlass playback of reverse drive tackleblock (15) lifting wireline (18) then makes the power of this suspension centre transfer to pair and lifts on the rope (17), and removal lifts wireline (18); The pair that hoists simultaneously lifts rope (17) and the main rope (16) that lifts; Upgrade fire door active segment flue (4), move driving (11) fire door active segment flue (4) is lifted to specified location, accomplish the dismounting lifting work of fire door active segment flue (4).
CN201210111947.0A 2012-04-17 2012-04-17 Method of maintenance and lifting for moving section flue at converter mouth CN102703640B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN102703640B CN102703640B (en) 2014-03-19

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103805738A (en) * 2012-11-06 2014-05-21 西林钢铁集团有限公司 Method for efficiently dismounting furnace mouth of converter
CN104418240A (en) * 2013-08-27 2015-03-18 中国五冶集团有限公司 Large flue lifting and assembly method
CN104846143A (en) * 2015-06-09 2015-08-19 中国十九冶集团有限公司 Construction method for replacing steelmaking converter flue
CN105986057A (en) * 2015-01-29 2016-10-05 江苏永钢集团有限公司 Replacement method of heated pipe in evaporative cooling flue
CN106435087A (en) * 2016-08-29 2017-02-22 中国十七冶集团有限公司 Sectional assembling and mounting method for converter vaporization flue
CN108728605A (en) * 2018-08-20 2018-11-02 攀钢集团工程技术有限公司 Converter trunnion ring replacing options
CN108946470A (en) * 2018-07-09 2018-12-07 莱芜钢铁集团有限公司 A kind of replacing options for converter entirety flue
CN109022672A (en) * 2018-08-24 2018-12-18 中国二十冶集团有限公司 The installation method of converter evaporation cooling air flue when a kind of maintenance

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CN101812564A (en) * 2010-04-27 2010-08-25 武汉一冶机电工程有限责任公司 Method for installing converter in plug-in mode

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CN101812564A (en) * 2010-04-27 2010-08-25 武汉一冶机电工程有限责任公司 Method for installing converter in plug-in mode

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王茂伙: "福建三钢1号转炉汽化烟道炉口段拆除更换施工技术", 《南方金属》, no. 5, 31 October 2008 (2008-10-31), pages 47 - 50 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103805738A (en) * 2012-11-06 2014-05-21 西林钢铁集团有限公司 Method for efficiently dismounting furnace mouth of converter
CN104418240A (en) * 2013-08-27 2015-03-18 中国五冶集团有限公司 Large flue lifting and assembly method
CN104418240B (en) * 2013-08-27 2016-06-22 中国五冶集团有限公司 The lifting of a kind of flue and group are to method
CN105986057A (en) * 2015-01-29 2016-10-05 江苏永钢集团有限公司 Replacement method of heated pipe in evaporative cooling flue
CN105986057B (en) * 2015-01-29 2017-10-20 江苏永钢集团有限公司 A kind of gasification cooling flue heat pipe replacing options
CN104846143A (en) * 2015-06-09 2015-08-19 中国十九冶集团有限公司 Construction method for replacing steelmaking converter flue
CN104846143B (en) * 2015-06-09 2017-03-22 中国十九冶集团有限公司 Construction method for replacing steelmaking converter flue
CN106435087A (en) * 2016-08-29 2017-02-22 中国十七冶集团有限公司 Sectional assembling and mounting method for converter vaporization flue
CN108946470A (en) * 2018-07-09 2018-12-07 莱芜钢铁集团有限公司 A kind of replacing options for converter entirety flue
CN108728605A (en) * 2018-08-20 2018-11-02 攀钢集团工程技术有限公司 Converter trunnion ring replacing options
CN109022672A (en) * 2018-08-24 2018-12-18 中国二十冶集团有限公司 The installation method of converter evaporation cooling air flue when a kind of maintenance

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