CN102619376A - Method for installing inner barrel of reinforced concrete tail gas chimney and lifting system for method - Google Patents

Method for installing inner barrel of reinforced concrete tail gas chimney and lifting system for method Download PDF

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Publication number
CN102619376A
CN102619376A CN2012101142814A CN201210114281A CN102619376A CN 102619376 A CN102619376 A CN 102619376A CN 2012101142814 A CN2012101142814 A CN 2012101142814A CN 201210114281 A CN201210114281 A CN 201210114281A CN 102619376 A CN102619376 A CN 102619376A
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China
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inner core
single
chimney
steel
lift
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CN2012101142814A
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Chinese (zh)
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CN102619376B (en
Inventor
陈正伟
杨正雄
肖灿
周灵凤
郎俊奇
刘妙
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二十三冶建设集团有限公司
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Priority to CN201210114281.4A priority Critical patent/CN102619376B/en
Publication of CN102619376A publication Critical patent/CN102619376A/en
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Abstract

The invention discloses a method for installing an inner barrel of a reinforced concrete tail gas chimney and a lifting system for the method. The method comprises the following steps of: fabricating single-section inner barrels, installing a supporting platform on each layer at intervals, and fixing a steel frame beam on the platform; lifting one single-section inner barrel to a position near the supporting platform on the topmost layer, hooping a split flange at the periphery of the inner barrel, fixing the split flange on the steel frame beam, and then lowering the inner barrel; and lifting the remaining single-section inner barrels up to the supporting platform on each layer in sequence from top to bottom, and finally sealing gaps between every two neighboring single-section inner barrels. The lifting system comprises a reinforced concrete chimney barrel, wherein supporting platforms are arranged on the inner wall of the chimney barrel at intervals; a gantry is arranged on the top of the chimney barrel; pulley blocks are fixed on the gantry; the two ends of steel wire ropes are respectively connected to a winch and inner barrel brackets after the steel wire ropes penetrate through the pulley blocks; and the steel frame beam is permanently fixed at an inner barrel lifting passageway. The method for installing the inner barrel of the reinforced concrete tail gas chimney and the lifting system have the advantages of saving the cost, along with a simple technological process, high construction efficiency, high safety and the like.

Description

The mounting method and the Lift-on/Lift-off System thereof of steel concrete tail gas funnel inner core

Technical field

The invention belongs to the construction field of reinforced concrete chimney, relate in particular to a kind of mounting method and installation system of reinforced concrete chimney inner core.

Background technology

It is high but contain the useless flue gas of sour corrosion property gas (sulfur-bearing) generally to use reinforced concrete chimney to discharge self-temperature in the existing sulfuric acid plant, and this reinforced concrete chimney mainly is to utilize on the flue gas heating and cooling condensation to reach the effect of collecting harmful tail gas.Yet; Steel concrete does not possess corrosion resistant characteristics; So have one to utilize the vertically fixing corrosion resistant inner core of steel concrete or the layering of steel platform in existing reinforced concrete chimney set inside, to be used for the sour gas discharging, this inner core generally adopts plastic materials such as polyvinyl chloride, polypropylene to make; The quality of single-unit inner core is not heavy but size is bigger, is fit to medium-sized hoisting equipment wire rope lifting.

The conventional method that above-mentioned chimney internal cylinder is installed is that a portal frame is set in the chimney top, and fixed block utilizes hoist engine to be used as power through pulley then, and wire rope is made lifting rope merogenesis lifting from the bottom up inner core.The first segment inner tube installation fixing after; Next step hangs onto the second joint inner core on the platform that installs and fixes at side; Adjust the position of hoist engine wire rope then, again the second joint inner core is moved to the inner core center line, drop on the first segment inner core; Proofread and correct back installation girder steel and fix, order is progressively upwards in place with all joint inner tube installation according to this.The shortcoming of this traditional hanging method is a translation large scale object in the chimney narrow space, and operation easier is big, and efficiency of construction is low; Security risk is big, needs translation owing in the inner core hoisting process simultaneously, before the inner core lifting; Support inner core girder steel need to remove earlier with the movable platform plate, along with the carrying out of inner core hoisting process, successively install and fix again; This has increased the workload of dismounting girder steel and movable platform plate virtually, and the cooperation between the professional work post simultaneously requires also higher relatively.

Summary of the invention

The technical problem that the present invention will solve is the deficiency that overcomes prior art; Provide that a kind of activities is simple, efficiency of construction is high, the mounting method of cost savings, the better steel concrete tail gas funnel of safety inner core, simultaneously correspondingly provide a kind of simple in structure, easy to assembly, cost to drop into the little Lift-on/Lift-off System that is used for steel concrete tail gas funnel inner tube installation process.

For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of mounting method of steel concrete tail gas funnel inner core, may further comprise the steps:

(1) makes inner core: make not single-unit inner core, and the periphery on single-unit inner core top is connected with a spacer ferrule with fixed flange;

(2) mounting platform: install the support platform of each layer in the interior spaces of said steel concrete tail gas funnel, and on each support platform fixing truss-steel beam;

(3) lifting inner core: the single-unit inner core lifting that will make with hanging device is near the support platform of top layer; Then with the periphery of a spliced flange hoop at this single-unit inner core; And spliced flange is fixed on the truss-steel beam of this support platform through securing member; Transfer this single-unit inner core through hanging device again, make this single-unit inner core fall to putting on described spliced flange through the spacer ferrule that is provided with on it; Repeat this step then, and successively remaining each single-unit inner core is lifted on respectively on the support platform of each layer according to top-down order;

(4) connect sealing: behind the whole installation in position of each single-unit inner core, again with erosion-resisting high-molecular organic material with the gap sealing between adjacent two single-unit inner cores, accomplish the installation of whole chimney internal cylinder.

In the mounting method of above-mentioned steel concrete tail gas funnel inner core, said spliced flange specifically can be assembled through connector (for example bolt) by two flange splices that match.

In the mounting method of above-mentioned steel concrete tail gas funnel inner core; As further improvement; Said hanging device comprises hoist engine, is installed on the pulley on the portal frame of chimney top and is arranged in the wire rope on the pulley; One end of wire rope is connected on the hoist engine, and the other end is connected with an inner core carriage.

In the mounting method of above-mentioned steel concrete tail gas funnel inner core, said inner core carriage is preferably a cross steel carriage, and four jiaos of said cross steel carriage are provided with four suspension ring, four vertical in twos and symmetric arrangement of suspension ring; Be provided with anti-sidesway bolt on the said cross steel carriage in addition.

Above-mentioned mounting method of the present invention has following distinguishing feature:

(1) the present invention at first changes the way that the single-unit inner core is installed in the prior art from the bottom up successively, according to top-down order the single-unit inner core is installed successively; The lifting of each single-unit inner core only limits in chimney internal cylinder design occupation of land, carry out vertical elevating movement, has cancelled the translational motion of original each single-unit inner core;

(2) with the present invention in top-down installation order match; When the making of each single-unit inner core; Cancelled the setting of fixed plastics flange dish on the former single-unit inner core; Fixed plastics flange dish is adapted as spliced flange, preferably spliced flange is arranged to half-and-half spliced flange; Meanwhile, the peripheral solder one circle spacer ferrule at each single-unit inner core falls to putting the stress point on spliced flange as each single-unit inner core;

(3) the present invention is when mounting platform, and the disposable installation in position of truss-steel beam that directly will fix each single-unit inner core need not truss-steel beam is dismantled again and assembled in the hoisting process of each single-unit inner core on support platform.

As a total technical conceive; The present invention also provides a kind of Lift-on/Lift-off System that is used for steel concrete tail gas funnel inner tube installation process; Said Lift-on/Lift-off System comprises the chimney concrete barrel, is arranged at intervals with a plurality of support platforms in short transverse on the inwall of chimney concrete barrel, and the top of chimney concrete barrel is equiped with portal frame; Be fixed with assembly pulley on the portal frame; The said assembly pulley of one steel wire penetrating, and an end of wire rope is connected on the hoist engine, and the other end is connected with an inner core carriage; The permanent truss-steel beam that is used to install spliced flange that is fixed with in inner core handling passage place on the said support platform.

In the above-mentioned Lift-on/Lift-off System, said spliced flange is preferably assembled through connector by two flange splices that match.

In the above-mentioned Lift-on/Lift-off System, said inner core carriage is preferably a cross steel carriage, and four jiaos of said cross steel carriage are provided with four suspension ring, four vertical in twos and symmetric arrangement of suspension ring; Be provided with anti-sidesway bolt on the said cross steel carriage in addition.

Compared with prior art; The invention has the advantages that: in the installation process of the present invention; Because the handling to each single-unit inner core all is on the same vertical plane; Therefore installation process does not need the translation inner core, and this has improved the safety of installation process at first greatly, and efficiency of construction also is improved significantly.In addition, installation practice of the present invention proves, a chimney internal cylinder is installed equally, adopts mounting method of the present invention to compare with conventional method, reduces under the half the situation at installation personnel, and efficiency of construction still can double; And because the concrete tube wall of steel concrete tail gas funnel is mainly used in the support inner core; Therefore the required bulk of translation single-unit inner core in the time of when the bore of design chimney, need not considering as conventional method that chimney internal cylinder is installed; So just, can make the diameter of chimney concrete tube wall reduce 2/5; And can not influence the installation of chimney internal cylinder, comprehensive benefit very significantly.Lift-on/Lift-off System of the present invention and mounting method of the present invention can be supporting, and it is not only simple in structure, easy for installation, the equipment input is little, cost is low, and the efficiency of construction in the installation process can significantly be provided.

Description of drawings

Fig. 1 is for being used for the Lift-on/Lift-off System structural representation of steel concrete tail gas funnel inner tube installation process in the embodiment of the invention.

Fig. 2 is the cutaway view Amplified image (near one deck support platform in A-A place only is shown) at A-A place among Fig. 1 of the present invention.

Fig. 3 is the partial enlarged drawing at B place among Fig. 1 of the present invention.

Marginal data:

1. chimney concrete barrel; 2, truss-steel beam; 3, single-unit inner core; 4, spliced flange; 41, semi-circular flange splice; 42, connecting bolt; 5, support platform; 6, inner core handling passage; 7, wire rope; 8, assembly pulley; 9, spacer ferrule; 10, inner core carriage; 11, anti-sidesway bolt; 12, hoist engine; 13, portal frame.

The specific embodiment

Below in conjunction with Figure of description and specific embodiment the present invention is further described.

Embodiment:

A kind of like Fig. 1, Fig. 2 and the Lift-on/Lift-off System that is used for steel concrete tail gas funnel inner tube installation process shown in Figure 3; This Lift-on/Lift-off System comprises chimney concrete barrel 1, is arranged at intervals with a plurality of support platforms 5 in short transverse on the inwall of chimney concrete barrel 1, and the top of chimney concrete barrel 1 is equiped with portal frame 13; Be fixed with assembly pulley 8 on the portal frame 13; One wire rope 7 passes assembly pulley 8, and an end of wire rope 7 is connected on the hoist engine 12, and the other end is connected with an inner core carriage 10; Hoist engine 12, assembly pulley 8, wire rope 7 and inner core carriage 10 etc. are formed the hanging device of present embodiment Lift-on/Lift-off System; The permanent truss-steel beam 2 that is used to install spliced flange 4 that is fixed with in inner core handling passage 6 places on the support platform 5.

In the Lift-on/Lift-off System of present embodiment, spliced flange 4 is made up of two semi-circular flange splices 41 that match, and semi-circular flange splice 41 is assembled into spliced flange 4 through connecting bolt 42.

In the Lift-on/Lift-off System of present embodiment, inner core carriage 10 is a cross steel carriage, and four jiaos of this cross steel carriage are provided with four suspension ring, four vertical in twos and symmetric arrangement of suspension ring; Be provided with anti-sidesway bolt 11 on the cross steel carriage in addition.

Interior tube construction with the sulfuric acid tail gas chimney of a 90m is an example, adopts mounting method of the present invention to carry out the lifting construction of chimney internal cylinder, and this method has adopted the Lift-on/Lift-off System of present embodiment to construct, and specifically may further comprise the steps:

(1) makes inner core: the chimney internal cylinder employing polypropylene material making that is used to discharge the sulfur acid flue gas in the present embodiment; Make earlier not single-unit inner core 3 with fixed flange; The external diameter of single-unit inner core 3 is 2400mm; The height of single-unit inner core 3 is 4950mm, and the periphery on single-unit inner core 3 tops be connected with a high 20cm, thick 2cm and with the spacer ferrule 9 of inner core with material;

(2) mounting platform: at the every interval 5m of interior sky (that is on inwall of chimney concrete barrel 1) of steel concrete tail gas funnel one deck support platform 5 is set and (in the work progress of chimney concrete barrel 1, has preset the concrete bracket; To be used to be provided with support platform 5); And on each support platform 5 fixing truss-steel beam 2, the truss-steel beam 2 and the interval of chimney internal cylinder outer wall are controlled at about 40mm; Because of truss-steel beam 2 in the mounting method of the present invention is disposably and permanently to be fixed on the support platform 5 (follow-up need not to carry out dismounting) again; Can pass through smoothly from the inner core handling passage 6 on the support platform 5 during handling when guaranteeing that follow-up single-unit inner core 3 from the bottom up; Single-unit inner core 3 of the present invention has been cancelled the fixed plastics flange that is provided with in the last prior art; Change detachable spliced flange 4 into; Also be provided with spacer ferrule 9 on the single-unit inner core 3 simultaneously, to drop on the stress point on the spliced flange 4 as single-unit inner core 3;

(3) hanging device is installed: embedding ironware at the top of chimney concrete barrel 1; And assemble a portal frame 13 at the top of chimney concrete barrel 1 (when the chimney construction concrete barrel 1 by pre-buried ironware; Portal frame 13 material therefors are positioned over the chimney top), portal frame 13 is made up of two vertical rods and a cross bar splicing; Then assembly pulley 8 is fixed on the portal frame 13, assembly pulley 8 includes two pulleys, and one is arranged on outside the inner diameter of steel flue scope, and another is arranged on the central axis of inner core; Chimney bottom can be provided with an angle pulley, connects the wire rope 7 on the hoist engine 12 with nylon rope, makes it pass the angle pulley of assembly pulley 8 and bottom;

(4) lifting inner core: at first; With the self-control flat car first single-unit inner core of having made 3 is erect in the propelling tail gas funnel; And be placed on the installation site of chimney internal cylinder design; Chaining bar cucurbit is this single-unit inner core 3 50cm that slings on the support platform of the bottom; Then cross steel carriage is placed on tube bottom in this single-unit; On the suspension ring of cross steel carriage, hang wire rope 7 (prepare four sections consistent wire rope of length it is connected with four suspension ring respectively, the wire rope after stretching and the angle of cross steel tray chamber are about 70 °), single-unit inner core 3 is placed on the cross steel carriage through chain block; Starting hoist engine 12 then upwards lifts by crane 30cm and tries to hang; Steadily again in order to the hanging device of last Lift-on/Lift-off System with this single-unit inner core 3 upwards lifting near the support platform 5 of top layer, stop hanging until the position of the setting height(from bottom) 5cm that exceeds this single-unit inner core 3, then around the outer wall of single-unit inner core 3 with two semi-circular flange splices 41 through connecting bolt 42 assemblings, one spliced flange 4 and hoop periphery at this single-unit inner core 3; Through securing member spliced flange 4 is fixed on the truss-steel beam 2 of this support platform 5 again; Slowly transfer this single-unit inner core 3 through the hoist engine 12 of hanging device, make this single-unit inner core 3 fall to putting on spliced flange 4 through the spacer ferrule 9 that is provided with on it, the single-unit inner core 3 of then top layer installs;

Put down cross steel carriage then, repeat this step, and successively remaining each single-unit inner core 3 is lifted on respectively on the support platform 5 of each layer of below according to top-down order;

(5) connect sealing: behind each single-unit inner core 3 whole installation in position, use erosion-resisting high-molecular organic material (present embodiment adopts the welding of polypropylene soft board), to accomplish the installation of whole chimney internal cylinder again with the gap sealing of 3 of adjacent two single-unit inner cores.

After the chimney internal cylinder installation, put wire rope 7 on ground with the nylon rope manual work and be recovered on the hoist engine 12, after portal frame 13 is removed, be put on the ground with the nylon rope manual work.

Claims (7)

1. the mounting method of a steel concrete tail gas funnel inner core may further comprise the steps:
(1) makes inner core: make not single-unit inner core, and the periphery on single-unit inner core top is connected with a spacer ferrule with fixed flange;
(2) mounting platform: install the support platform of each layer in the interior spaces of said steel concrete tail gas funnel, and on each support platform fixing truss-steel beam;
(3) lifting inner core: the single-unit inner core lifting that will make with hanging device is near the support platform of top layer; Then with the periphery of a spliced flange hoop at this single-unit inner core; And spliced flange is fixed on the truss-steel beam of this support platform through securing member; Transfer this single-unit inner core through hanging device again, make this single-unit inner core fall to putting on described spliced flange through the spacer ferrule that is provided with on it; Repeat this step then, and successively remaining each single-unit inner core is lifted on respectively on the support platform of each layer according to top-down order;
(4) connect sealing: behind the whole installation in position of each single-unit inner core, again with erosion-resisting high-molecular organic material with the gap sealing between adjacent two single-unit inner cores, accomplish the installation of whole chimney internal cylinder.
2. the mounting method of steel concrete tail gas funnel inner core according to claim 1 is characterized in that: said spliced flange is assembled through connector by two flange splices that match.
3. the mounting method of steel concrete tail gas funnel inner core according to claim 1; It is characterized in that: said hanging device comprises hoist engine, is installed on the pulley on the portal frame of chimney top and is arranged in the wire rope on the pulley; One end of wire rope is connected on the hoist engine, and the other end is connected with an inner core carriage.
4. the mounting method of steel concrete tail gas funnel inner core according to claim 3 is characterized in that: said inner core carriage is a cross steel carriage, and four jiaos of said cross steel carriage are provided with four suspension ring, four vertical in twos and symmetric arrangement of suspension ring; Be provided with anti-sidesway bolt on the said cross steel carriage in addition.
5. Lift-on/Lift-off System that is used for steel concrete tail gas funnel inner tube installation process; Said Lift-on/Lift-off System comprises the chimney concrete barrel, is arranged at intervals with a plurality of support platforms in short transverse on the inwall of chimney concrete barrel, and the top of chimney concrete barrel is equiped with portal frame; It is characterized in that: be fixed with assembly pulley on the portal frame; The said assembly pulley of one steel wire penetrating, and an end of wire rope is connected on the hoist engine, and the other end is connected with an inner core carriage; The permanent truss-steel beam that is used to install spliced flange that is fixed with in inner core handling passage place on the said support platform.
6. Lift-on/Lift-off System according to claim 5 is characterized in that: said spliced flange is assembled through connector by two flange splices that match.
7. according to claim 5 or 6 described Lift-on/Lift-off Systems, it is characterized in that: said inner core carriage is a cross steel carriage, and four jiaos of said cross steel carriage are provided with four suspension ring, four vertical in twos and symmetric arrangement of suspension ring; Be provided with anti-sidesway bolt on the said cross steel carriage in addition.
CN201210114281.4A 2012-04-18 2012-04-18 Method for installing inner barrel of reinforced concrete tail gas chimney and lifting system for method CN102619376B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225440A (en) * 2013-04-12 2013-07-31 中国能源建设集团广东省电力设计研究院 Method for supporting equipment inside desulfurization tower and retractable concrete supporting structure
CN103790428A (en) * 2013-08-08 2014-05-14 华能国际电力股份有限公司 Chimney
CN104030154A (en) * 2014-06-20 2014-09-10 山东电力建设第一工程公司 Multiple-lifting-point lifting and mounting device for chimneys
CN109594839A (en) * 2018-12-17 2019-04-09 广州市第四建筑工程有限公司 A kind of installation method of sleeve-type chimney inner cylinder

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CN103225440A (en) * 2013-04-12 2013-07-31 中国能源建设集团广东省电力设计研究院 Method for supporting equipment inside desulfurization tower and retractable concrete supporting structure
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CN103790428B (en) * 2013-08-08 2016-08-10 华能国际电力股份有限公司 A kind of chimney
CN104030154A (en) * 2014-06-20 2014-09-10 山东电力建设第一工程公司 Multiple-lifting-point lifting and mounting device for chimneys
CN109594839A (en) * 2018-12-17 2019-04-09 广州市第四建筑工程有限公司 A kind of installation method of sleeve-type chimney inner cylinder

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Address after: 410015 Changsha East Road, Hunan, No. 289

Patentee after: THE 23TH METALLURGICAL CONSTRUCTION GROUP CO., LTD. OF MINMETALS

Address before: 410015 Changsha East Road, Hunan, No. 289

Patentee before: Ershisanye Construction Group Co., Ltd.