CN102515030A - Construction process for replacement for steam pocket in narrow condition - Google Patents
Construction process for replacement for steam pocket in narrow condition Download PDFInfo
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- CN102515030A CN102515030A CN2011104167791A CN201110416779A CN102515030A CN 102515030 A CN102515030 A CN 102515030A CN 2011104167791 A CN2011104167791 A CN 2011104167791A CN 201110416779 A CN201110416779 A CN 201110416779A CN 102515030 A CN102515030 A CN 102515030A
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Abstract
The invention provides a construction process for replacement for a steam pocket in a narrow condition, comprising the following steps of: step a, disposing a set of tackle blocks on the roof truss of a factory building above a steam pocket platform, and lifting a steam pocket away from a steam pocket support seat; step b, further disposing a set of pulley blocks in a first direction, continuing to lift the steam pocket and continuing to translate the steam pocket along the first direction; step c, lowering the steam pocket to a platform at a second height from the height of the steam pocket platform after the steam pocket is translated in place; step d, disposing two sets of tackle blocks above the platform at the second height, and translating the steam pocket on the platform at the second height along a second direction vertical to the first direction; step e, lowering the steam pocket to a platform at a third height after the steam pocket is translated to be suspended; step f, disposing tackle blocks above the platform at the third height, and transferring the steam pocket to a platform at a fourth height; and step g, lifting the steam pocket onto the ground by a crane at last.
Description
Technical field
The present invention relates to metallurgical equipment technological change field, more specifically, relate to the transformation of metallurgical equipments such as converter, power plant boiler, sintering, blast furnace, coking and the drum in the maintenance technology and change construction technology.
Background technology
Under environment such as steel-making, power plant, often there is the demand of enlarging.For example, under the condition of existing converter system factory building and auxiliary facility, increase a new converter.In this case, there is the narrow problem of construction environment.Because in work progress, can set up a plurality of platforms and hanging device, therefore, utilize in this work progress hardware facility to existing converter overhaul with equipment replacement be a good opportunity.Therefore, those skilled in the art can face under narrow condition more exchange device usually, guarantee maintenance and problem newly-built and that deposit simultaneously.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of narrow condition water drum to change construction technology.
According to an aspect of the present invention, said narrow condition water drum is changed construction technology and is comprised the steps: step a: a cover polyspast is set on the factory building roof truss above the drum platform, drum is hung the drum bearing; Step b: a cover assembly pulley is set on first direction again, continues the lifting drum and drum is continued translation along first direction; Step c: after the drum translation puts in place, drop to drum on the platform of second height from drum flat-bed height; Steps d: two cover polyspast are set above the platform of second height, on the platform of second height, make drum along the second direction translation vertical with first direction; Step e: drum move to drum unsettled after, with drum drop to the 3rd the height platform on; Step f: above the platform of the 3rd height, polyspast is set, drum is transferred on the platform of the 4th height; Step g: with crane drum is winched on the ground at last.
Wherein, in steps d, in the drum translation, another set of assembly pulley is set and on reverse, pulls, prevent to pull in the process out of control out of control before unsettled with lifting at reversing sense.
Wherein, in step a, earlier the factory building roof truss is reinforced, polyspast is installed again.
Wherein, in step b, through easy interim bearing beam is installed on the bearing beam of factory building roof truss, traction is set uses travelling bogie, track is as polyspast, is placed on drum and carries out the drum motion of translation on the dolly.
Construction technology according to the present invention also comprises: with opposite step new drum is installed.
Present technique mainly is to utilize the repair time to go forward side by side overhaul and newly-built converter drum simultaneously to take into account construction, through early stage facility install and do not influence production; Open up the passage layered operation simultaneously by all kinds of means of new construction; Original pipe line arrangement mode is optimized, changes pipeline contact direction in advance; Realize optimizing working procedure and work progress, reduce construction safety danger factor, reduction construction cost, the purpose of shortening engineering time.
Description of drawings
Through below in conjunction with the description carried out of accompanying drawing that an example exemplarily is shown, of the present invention above-mentionedly will become apparent with other purposes and characteristics, wherein:
Fig. 1 is the factory building plane of arrangement figure according to the embodiment of the invention;
Fig. 2 is the hoisting schematic, elevational view according to the embodiment of the invention;
Fig. 3 is the schematic side elevation according to the hoisting of the embodiment of the invention.
The specific embodiment
Below, will combine accompanying drawing that specific embodiment is described, still, the embodiment that is provided among the present invention only is in order technical conceive of the present invention to be conveyed to those skilled in the art, the protection domain that is not meant to limit the present invention comprehensively.
With Pangang Group Chengdu Steel & Vanadium Co., Ltd.'s newly-built 100t converter extracting vanadium engineering is example, and this project is to utilize existing 80t converter system factory building and auxiliary facility, increases a 100t converter extracting vanadium, is arranged in existing 80t converter (9-11 axis) next door (striding the 7-9 axis).During building the 100t converter extracting vanadium, former 80 tons of converters will be carried out an afterheat boiler system overhaul.80t converter steam generator system overhaul engineering need be changed drum, belong to the overhaul of 80t converter steam generator system, and the drum volume and weight of changing increases all.New and old drum parameter is respectively, old drum: diameter phi 2000mm, and long 9.5m, weight is 16t; New drum: diameter phi 2600mm, long 11m, weight is 22t, and difficulty of construction is increased.
The problem that is faced is: big at drum volume, weight; Narrow in the construction, hoisting point position conditional request height because of passage; Must drum be erect lifting in the former construction; Under the situation that problems such as working procedure is complicated, need the time long, and implementation process safety difficulty is big exist, realize that maintenance and newly-built takes into account construction.
In order to solve above-mentioned similar techniques problem, the invention provides a kind of narrow condition water drum and change construction technology.To combine specific embodiment to be described in detail below.Change construction technology in order to make those skilled in the art understand narrow condition water drum of the present invention more fully, before describing exemplary embodiment of the present invention in detail, describe the general thought of construction technology of the present invention earlier.
According to construction technology of the present invention, the dismounting route of old drum is opposite with new Installation of Steam Drum route, therefore, can utilize identical mast-up and lifting mode.Simultaneously, because the drum of new converter and the drum of old converter are adjacently located on the platform of sustained height, therefore the maintenance of old converter can be gone forward side by side simultaneously with newly-built converter drum and taken into account construction, makes full use of existing facility, saves the engineering time.
Old drum is placed on 45.3 meters platforms (9-11 axis) of factory building, can utilize oxygen rifle passage to satisfy the construction needs through moving old drum to factory building 11-12 axis.After old drum is removed; Earlier newly-built 100 tons of converter extracting vanadium drums are lifted to 45.3 meters platforms; Be transported to installation site (45.3 meters platform 7-9 axis) with newly-built with drum with the traction travelling bogie, secondly (45.3 meters platform 9-11 axis) carries out in place, centering, fixing to the installation site in the new drum lifting that old converter is changed.
Bearing beam is installed on former factory building framework and former framework is reinforced, easy traction travelling bogie track is installed on bearing beam, through being placed on drum on the dolly, the traction travelling bogie realizes that drum is at 45.3 meters flat-bed parallel motions.
Former factory building framework can not satisfy the needs of lifting operation, needs on the oxygen rifle passage and on 45.3 meters platform frameworks the needs that interim mast-up could satisfy lifting operation are being installed.
In drum dismounting and hoisting process, the present invention reinforces drum.After drum reinforced two effects are arranged, the one, do not use the wire line hitch binding to guarantee effective lifting altitude, the 2nd, be placed on and guarantee on the dolly steadily.
Fig. 1 is the factory building plane of arrangement figure according to the embodiment of the invention.Fig. 2 is the hoisting schematic, elevational view according to the embodiment of the invention.Fig. 3 is the schematic side elevation according to the hoisting of the embodiment of the invention.
In order more clearly to distinguish orientation and direction, in factory building planar view shown in Figure 1, length direction shows with B row and C tabulation, is labeled as 6 axis, 7 axis, 9 axis, 11 axis and 12 axis with the B row respectively in order with the vertical direction of C row.
Old converter drum is positioned at C and lists, and between the 9-11 axis, and new converter drum lists and between the 7-9 axis at C.The converter drum is installed on the platform of 45.3m.
In order to realize that drum is removed and lifted; Drum deck roof top 50.5m roof truss is reinforced; And a cover 4 * 5 polyspast are set, be used for old drum from the 45.3m platform lift to 39.7m platform top and with new drum from 39.7m platform upper lifting to the 45.3m platform.Drum is removed and is installed all through the 39.7m platform about oxygen rifle passage.Because 39.7m platform to 45.3m platform headroom is little; Drum is placed in the axis direction near C; There is the belt feeder (39.7m platform) of converter feeding system to stop drum to be advanced when dragging; Therefore must set up the transition slipway beam of crossing over belt feeder at the 39.7m platform, and the slipway beam of being set up can not restrict very much 39.7m direct labor's walking and operation, interim transition slideway below should not be lower than 1.7m apart from 39.7m flat-bed height temporarily; Let production and maintenance neglect neither, only in this way could let drum arrive on oxygen rifle passage and the 45.3m platform through the 39.7m platform smoothly.
Bear girder steel and the structures more than 10 tons at 39.7m and 50.5m beam B axis to C axis direction place (being oxygen rifle passage) top incapability; Therefore must above oxygen rifle passage, mast-up be set; Settle lifting Liang Lianggen, hang two covers, 4 * 5 polyspast drum is lifted the platform to 20.8m from the 39.7m platform.
When drum lifts the 20.8m platform, do not have vertical channel again and can lift drum up and down, therefore must a cover 4 * 5 polyspast be set in the reinforced side of stepping up of 80t converter factory building, 20.8m platform drum is received the 7.8m platform.With reinforced inter-bank car required drum is up and down lifted to ground at last.
Below; The dismounting hoisting process of old drum is described in more detail: 1.. old drum rises simultaneously to winch to earlier with two covers, 4 * 5 polyspast and leaves the about 300mm of drum bearing; Near 12 post side room frame columns one cover polyspast is set again and continues lifting; Drum top two cover polyspast hoist with 12 post side room frame polyspast and slowly descend, and drum is placed to 12 post side bearings, one end, remove the polyspast of 11 post sides then; Drum 12 post lateral troley groups are locked on the 11 post side suspension centres and suitably past 12 post side shiftings; At last that force-applied two cover polyspast are all stressed, a cover polyspast of drum top hoists with 12 post side room frame polyspast and slowly descends, and with this two covers polyspast drum is lifted to the slipway beam of 39.7m platform top.2.. two covers, 4 * 5 polyspast that are provided with 39.7m flat-bed mast-up pull drum and be listed ass along slipway beam from C toward the B column direction and move, and one cover, 1 * 2 polyspast are set pulling reversing sense simultaneously, prevent to pull in the process out of control with lift before unsettled out of control; After 4 * 5 polyspast lifting drum that oxygen rifle passage top is provided with is unsettled, 1 * 2 polyspast that is provided with is before taken, slowly descending makes drum drop to the 20.8m platform again.3.. the polyspast that the is arranged on drum 11 post sides back of dismantling is provided with the replacement of a cover 4 * 5 polyspast with being arranged on reinforced the striding of 80t converter on the room frame, 12 post sides, the one cover polyspast cooperation of oxygen rifle passage top is received the 7.8m platform with 20.8m platform drum.4.. hang with reinforced inter-bank car at last drum is winched on the steel scrap side vacant lot.New drum is installed hoisting process in contrast, but earlier the drum of new converter is installed, at the drum that old converter is installed.So just can solve drum and change this construction difficult problem.
Technology of the present invention also can be applicable to the installation of various kinds of equipment in high level, the multi-platform factory building, when original factory building has suitable hanging device and passage, does not use.Also can be applicable to the installation of main equipments such as maintenance installation of maintenance installation, the thermoelectric power station drum of maintenance installation, steelworks thermal accumulator like sintering plant mixer cylindrical shell.
It should be appreciated by those skilled in the art that the special value of when describing exemplary embodiment of the present, being mentioned should not cause restriction to protection scope of the present invention just to convenient description exemplary embodiment of the present invention.Those skilled in the art can carry out corresponding modification or modification according to the practice of construction needs based on design of the present invention.Modification of in principle of the present invention and spirit, carrying out and modification all fall in protection scope of the present invention.
Claims (5)
1. a narrow condition water drum is changed construction technology, comprises the steps:
Step a: a cover polyspast is set on the factory building roof truss above the drum platform, drum is hung the drum bearing;
Step b: a cover assembly pulley is set on first direction again, continues the lifting drum and drum is continued translation along first direction;
Step c: after the drum translation puts in place, drop to drum on the platform of second height from drum flat-bed height;
Steps d: two cover polyspast are set above the platform of second height, on the platform of second height, make drum along the second direction translation vertical with first direction;
Step e: drum move to drum unsettled after, with drum drop to the 3rd the height platform on;
Step f: above the platform of the 3rd height, polyspast is set, drum is transferred on the platform of the 4th height;
Step g: with crane drum is winched on the ground at last.
2. construction technology as claimed in claim 1 wherein, in steps d, is provided with another set of assembly pulley at reversing sense and on reverse, pulls in the drum translation, prevent to pull in the process out of control out of control before unsettled with lifting.
3. construction technology as claimed in claim 1 wherein, in step a, is reinforced the factory building roof truss earlier, and polyspast is installed again.
4. construction technology as claimed in claim 1 wherein, in step b, through easy interim bearing beam is installed on factory building roof truss beam, is provided with traction and uses travelling bogie, is placed on drum and carries out the drum motion of translation on the dolly.
5. like the described construction technology of each claim among the claim 1-4, also comprise the step that new drum is installed with opposite order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104167791A CN102515030A (en) | 2011-12-14 | 2011-12-14 | Construction process for replacement for steam pocket in narrow condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104167791A CN102515030A (en) | 2011-12-14 | 2011-12-14 | Construction process for replacement for steam pocket in narrow condition |
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| CN102515030A true CN102515030A (en) | 2012-06-27 |
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| CN2011104167791A Pending CN102515030A (en) | 2011-12-14 | 2011-12-14 | Construction process for replacement for steam pocket in narrow condition |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612994A (en) * | 2013-12-03 | 2014-03-05 | 四川电力建设三公司 | Method and device for hoisting steam pocket in single hoisting point inclination manner |
| CN105907916A (en) * | 2016-04-12 | 2016-08-31 | 中国十七冶集团有限公司 | Method for converter steam drum emplacement after workshop closing |
| CN110747307A (en) * | 2019-10-23 | 2020-02-04 | 中国三冶集团有限公司 | Large steam drum hoisting method in converter energy-saving and environment-friendly reconstruction |
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| CN101033636A (en) * | 2007-03-23 | 2007-09-12 | 北京城建集团有限责任公司 | Large span bidirectional string stretching girders rope accumulation slippage construction method |
| CN101289828A (en) * | 2008-05-22 | 2008-10-22 | 北京铁五院工程机械科技开发有限公司 | Construction equipment and construction process of double-block ballastless track |
| CN102213085A (en) * | 2010-04-09 | 2011-10-12 | 中国海洋石油总公司 | Installation method of vertical pipe of guide pipe rack |
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2011
- 2011-12-14 CN CN2011104167791A patent/CN102515030A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101033636A (en) * | 2007-03-23 | 2007-09-12 | 北京城建集团有限责任公司 | Large span bidirectional string stretching girders rope accumulation slippage construction method |
| CN101289828A (en) * | 2008-05-22 | 2008-10-22 | 北京铁五院工程机械科技开发有限公司 | Construction equipment and construction process of double-block ballastless track |
| CN102213085A (en) * | 2010-04-09 | 2011-10-12 | 中国海洋石油总公司 | Installation method of vertical pipe of guide pipe rack |
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| 翁明钧: "发耳电厂1炉汽包吊装方法", 《发耳电厂4×600MW机组工程施工论文总结汇编》, 31 December 2010 (2010-12-31), pages 97 - 99 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612994A (en) * | 2013-12-03 | 2014-03-05 | 四川电力建设三公司 | Method and device for hoisting steam pocket in single hoisting point inclination manner |
| CN103612994B (en) * | 2013-12-03 | 2015-10-28 | 四川电力建设三公司 | Drum list point inclination manner method |
| CN105907916A (en) * | 2016-04-12 | 2016-08-31 | 中国十七冶集团有限公司 | Method for converter steam drum emplacement after workshop closing |
| CN105907916B (en) * | 2016-04-12 | 2018-01-02 | 中国十七冶集团有限公司 | A kind of sealing power house rear converter drum method in place |
| CN110747307A (en) * | 2019-10-23 | 2020-02-04 | 中国三冶集团有限公司 | Large steam drum hoisting method in converter energy-saving and environment-friendly reconstruction |
| CN110747307B (en) * | 2019-10-23 | 2021-05-28 | 中国三冶集团有限公司 | Large steam drum hoisting method in converter energy-saving and environment-friendly reconstruction |
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Application publication date: 20120627 |