CN102619376B - 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
CN102619376B
CN102619376B CN201210114281.4A CN201210114281A CN102619376B CN 102619376 B CN102619376 B CN 102619376B CN 201210114281 A CN201210114281 A CN 201210114281A CN 102619376 B CN102619376 B CN 102619376B
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China
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inner core
single
chimney
steel
flange
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CN201210114281.4A
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Chinese (zh)
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CN102619376A (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
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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 of steel concrete tail gas funnel inner core and Lift-on/Lift-off System thereof

Technical field

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

Background technology

Generally use reinforced concrete chimney not high but containing the useless flue gas of acidic corrosive gas (sulfur-bearing) to discharge self-temperature in existing sulfuric acid plant, this reinforced concrete chimney mainly to utilize on flue gas heating and cooling condensation to reach the effect of collecting Tail Gas.But, steel concrete does not possess corrosion resistant feature, so be provided with a corrosion resistant inner core utilizing steel concrete or the layering of steel platform vertically fixing in existing reinforced concrete chimney inside, for acid gas emissions, this inner core generally adopts the plastic material such as polyvinyl chloride, polypropylene to make, the quality of single-unit inner core is not heavy but size is comparatively large, is applicable to medium-sized hoisting equipment wire rope lifting.

The conventional method of installing above-mentioned chimney internal cylinder arranges portal frame, then a fixed block, utilizes hoist engine to be used as power by pulley, and lifting rope merogenesis lifting from the bottom up inner core made by wire rope.After first segment inner tube installation is fixing, second section inner core hangs onto on the fixing platform of installation at side by next step, then the position of steel wire rope of windlass is adjusted, again second section inner core is moved to inner core center line, drop on first segment inner core, install girder steel after correcting to fix, order is progressively upwards by place for all joint inner tube installation according to this.The shortcoming of this traditional hanging method is translation large scale object in chimney narrow space, operation easier is large, efficiency of construction is low, and security risk is large, simultaneously owing to needing translation in inner core hoisting process, before inner core lifting, support inner core girder steel and movable platform plate need first to remove, along with the carrying out of inner core hoisting process, more successively install fixing, this adds the workload of dismounting girder steel and movable platform plate virtually, and the cooperation simultaneously between professional workers requires also relatively higher.

Summary of the invention

The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, there is provided that a kind of activities is simple, efficiency of construction is high, the mounting method of cost savings, safety better steel concrete tail gas funnel inner core, simultaneously correspondingly provide that a kind of structure is simple, easy to assembly, cost drops into little of the Lift-on/Lift-off System in 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, comprises the following steps:

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

(2) mounting platform: space is every the support platform installing each layer in described steel concrete tail gas funnel, and fixes truss-steel beam on each support platform;

(3) lift inner core: with hanging device by the single-unit inner core lifting that made near the support platform of most top layer, then by a spliced flange hoop in the periphery of this single-unit inner core, and make spliced flange be fixed on the truss-steel beam of this support platform by securing member, transfer this single-unit inner core by hanging device again, make this single-unit inner core fall to putting on described spliced flange by the spacer ferrule that it is arranged; Then repeat this step, and successively remaining each single-unit inner core is lifted on the support platform of each layer respectively according to top-down order;

(4) sealing is connected: after the whole installation in position of each single-unit inner core, then with erosion-resisting high-molecular organic material by the gap sealing between adjacent two single-unit inner cores, complete the installation of whole chimney internal cylinder.

In the mounting method of above-mentioned steel concrete tail gas funnel inner core, the flange splice that described spliced flange specifically can match by two is assembled by connector (such as bolt).

In the mounting method of above-mentioned steel concrete tail gas funnel inner core, as further improvement, the wire rope that described hanging device comprises hoist engine, is installed on the pulley on the portal frame of chimney top and is arranged on pulley, one end of wire rope is connected on hoist engine, and the other end is connected with an inner core bracket.

In the mounting method of above-mentioned steel concrete tail gas funnel inner core, described inner core bracket is preferably a cross steel bracket, and the corner of described cross steel bracket is provided with four suspension ring, and four suspension ring are vertical between two and be arranged symmetrically with; Described cross steel bracket is separately provided with anti-sidesway bolt.

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

(1) first the present invention changes the way of installing single-unit inner core in prior art from the bottom up successively, installs single-unit inner core successively according to top-down order; The lifting of each single-unit inner core is only limitted to take up an area in chimney internal cylinder design carry out vertical lifting motion, eliminates the translational motion of original each single-unit inner core;

(2) match with installation order top-down in the present invention, when the making of each single-unit inner core, eliminate the setting of fixed plastic flange on former single-unit inner core, fixed plastic flange is adapted as spliced flange, preferably spliced flange is arranged to half-and-half spliced flange; Meanwhile, enclose spacer ferrule in the peripheral solder one of each single-unit inner core, fall to putting the stress point on spliced flange as each single-unit inner core;

(3) the present invention is when mounting platform, directly will fix the disposable installation in position of truss-steel beam of each single-unit inner core on support platform, without the need to re-starting dismounting and assembling to truss-steel beam in the hoisting process of each single-unit inner core.

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

In above-mentioned Lift-on/Lift-off System, the flange splice that described spliced flange preferably matches by two is assembled by connector.

In above-mentioned Lift-on/Lift-off System, described inner core bracket is preferably a cross steel bracket, and the corner of described cross steel bracket is provided with four suspension ring, and four suspension ring are vertical between two and be arranged symmetrically with; Described cross steel bracket is separately provided with anti-sidesway bolt.

Compared with prior art, the invention has the advantages that: in installation process of the present invention, owing to being all on same vertical plane to the handling of each single-unit inner core, therefore installation process does not need translation inner core, first this substantially increase the safety of installation process, and efficiency of construction is also improved significantly.In addition, installation practice of the present invention proves, a same installation chimney internal cylinder, adopts mounting method of the present invention compared with conventional method, and when installation personnel reduces half, efficiency of construction still can double; And be mainly used in supporting inner core due to the concrete tube wall of steel concrete tail gas funnel, bulk when therefore not needing to consider that chimney internal cylinder is installed as conventional method when designing the bore of chimney needed for translation single-unit inner core, so just, the diameter of chimney concrete tube wall can be made to reduce 2/5, and the installation of chimney internal cylinder can not be affected, comprehensive benefit is very remarkable.Lift-on/Lift-off System of the present invention and mounting method of the present invention can be supporting, and not only structure is simple, easy for installation, equipment investment is little, cost is low for it, and significantly can provide the efficiency of construction in installation process.

Accompanying drawing explanation

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

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

Fig. 3 is the partial enlarged drawing at B place in 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 bracket; 11, anti-sidesway bolt; 12, hoist engine; 13, portal frame.

Detailed description of the invention

Below in conjunction with Figure of description and specific embodiment, the invention will be further described.

embodiment:

A kind of as shown in Figure 1, Figure 2 and Figure 3 for the Lift-on/Lift-off System in steel concrete tail gas funnel inner tube installation process, this Lift-on/Lift-off System comprises chimney concrete barrel 1, the inwall of chimney concrete barrel 1 is arranged at intervals with multiple support platform 5 in short transverse, the top of chimney concrete barrel 1 is equiped with portal frame 13, portal frame 13 is fixed with assembly pulley 8, one wire rope 7 is through assembly pulley 8, and one end of wire rope 7 is connected on hoist engine 12, and the other end is connected with an inner core bracket 10; The hanging device of the composition such as hoist engine 12, assembly pulley 8, wire rope 7 and inner core bracket 10 the present embodiment Lift-on/Lift-off System; The permanent truss-steel beam 2 be fixed with for installing spliced flange 4 in inner core handling passage 6 place on support platform 5.

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

In the Lift-on/Lift-off System of the present embodiment, inner core bracket 10 is a cross steel bracket, and the corner of this cross steel bracket is provided with four suspension ring, and four suspension ring are vertical between two and be arranged symmetrically with; Cross steel bracket is separately provided with anti-sidesway bolt 11.

For tube construction in the sulfuric acid tail gas chimney of a 90m, adopt mounting method of the present invention to carry out the lifting construction of chimney internal cylinder, the Lift-on/Lift-off System that the process employs the present embodiment is constructed, and specifically comprises the following steps:

(1) inner core is made: the chimney internal cylinder for discharging sulfur acid flue gas in the present embodiment adopts polypropylene material to make, first make the single-unit inner core 3 not 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 top be connected with a high 20cm, thick 2cm and with the spacer ferrule 9 of inner core with material;

(2) mounting platform: empty (that is on inwall of chimney concrete barrel 1) arranges one deck support platform 5(at interval of 5m and be prefixed concrete bracket in the work progress of chimney concrete barrel 1 in steel concrete tail gas funnel, for arranging support platform 5), and truss-steel beam 2 is fixed on each support platform 5, make the Separation control of truss-steel beam 2 and chimney internal cylinder outer wall at about 40mm; Because truss-steel beam 2 in mounting method of the present invention is disposably and permanently fixed on (follow-up without the need to carrying out dismounting again) on support platform 5, for passing through smoothly from the inner core handling passage 6 support platform 5 during handling when ensureing that follow-up single-unit inner core 3 from the bottom up, single-unit inner core 3 of the present invention eliminates the fixed plastics flange arranged in prior art, change detachable spliced flange 4 into, single-unit inner core 3 is also provided with spacer ferrule 9, to drop on the stress point on spliced flange 4 as single-unit inner core 3 simultaneously;

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

(4) inner core is lifted: first, erectting with the single-unit inner core 3 that first has been made by self-control flat car advances in tail gas funnel, and be placed on the installation site of chimney internal cylinder design, the support platform of the bottom is hung chain block this single-unit inner core 3 is sling 50cm, then cross steel bracket is placed on bottom this single-unit inner core, the suspension ring of cross steel bracket are hung wire rope 7(prepare four sections of consistent wire rope of length and make it be connected with four suspension ring respectively, the angle of the wire rope after stretching and cross steel tray chamber is at about 70 °), by chain block, single-unit inner core 3 is placed on cross steel bracket, then start hoist engine 12 upwards to lift by crane 30cm and carry out examination and hang, this single-unit inner core 3 upwards lift near the support platform 5 of extremely most top layer in order to the hanging device of upper Lift-on/Lift-off System again steadily, until the position exceeding the setting height(from bottom) 5cm of this single-unit inner core 3 stops hanging, then around single-unit inner core 3 outer wall by two semi-circular flange splices 41 by connecting bolt 42 assemble a spliced flange 4 and hoop in the periphery of this single-unit inner core 3, spliced flange 4 is made to be fixed on the truss-steel beam 2 of this support platform 5 by securing member again, this single-unit inner core 3 is slowly transferred by the hoist engine 12 of hanging device, this single-unit inner core 3 is made to fall to putting on spliced flange 4 by the spacer ferrule 9 that it is arranged, then the single-unit inner core 3 of most top layer installs,

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

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

After chimney internal cylinder installation, manually put wire rope 7 on ground be recovered on hoist engine 12 with nylon rope, portal frame 13 is manually put on ground with nylon rope after removing.

Claims (5)

1. a mounting method for steel concrete tail gas funnel inner core, comprises the following steps:
(1) inner core is made: make the single-unit inner core not with fixed flange, and the periphery on single-unit inner core top is connected with a spacer ferrule;
(2) mounting platform: space is every the support platform installing each layer in described steel concrete tail gas funnel, and on each support platform the permanent truss-steel beam be fixed with for installing spliced flange;
(3) lift inner core: with hanging device by the single-unit inner core lifting that made near the support platform of most top layer, then by a spliced flange hoop in the periphery of this single-unit inner core, described spliced flange is assembled by connector by the flange splice that two are matched, and make spliced flange be fixed on the truss-steel beam of this support platform by securing member, transfer this single-unit inner core by hanging device again, make this single-unit inner core fall to putting on described spliced flange by the spacer ferrule that it is arranged; Then repeat this step, and successively remaining each single-unit inner core is lifted on the support platform of each layer respectively according to top-down order;
(4) sealing is connected: after the whole installation in position of each single-unit inner core, then with erosion-resisting high-molecular organic material by the gap sealing between adjacent two single-unit inner cores, complete the installation of whole chimney internal cylinder.
2. the mounting method of steel concrete tail gas funnel inner core according to claim 1, it is characterized in that: the wire rope that described hanging device comprises hoist engine, is installed on the pulley on the portal frame of chimney top and is arranged on pulley, one end of wire rope is connected on hoist engine, and the other end is connected with an inner core bracket.
3. the mounting method of steel concrete tail gas funnel inner core according to claim 2, is characterized in that: described inner core bracket is a cross steel bracket, and the corner of described cross steel bracket is provided with four suspension ring, and four suspension ring are vertical between two and be arranged symmetrically with; Described cross steel bracket is separately provided with anti-sidesway bolt.
4. one kind for the Lift-on/Lift-off System in steel concrete tail gas funnel inner tube installation process, described Lift-on/Lift-off System comprises chimney concrete barrel, the inwall of chimney concrete barrel is arranged at intervals with multiple support platform in short transverse, the top of chimney concrete barrel is equiped with portal frame, it is characterized in that: portal frame is fixed with assembly pulley, assembly pulley described in one steel wire penetrating, and one end of wire rope is connected on hoist engine, the other end is connected with an inner core bracket; The permanent truss-steel beam be fixed with for installing spliced flange in inner core handling passage place on described support platform; Inner core bracket is placed the single-unit inner core not with fixed flange, and the periphery on single-unit inner core top is connected with a spacer ferrule;
Described spliced flange is assembled by connector by the flange splice that two are matched.
5. Lift-on/Lift-off System according to claim 4, is characterized in that: described inner core bracket is a cross steel bracket, and the corner of described cross steel bracket is provided with four suspension ring, and four suspension ring are vertical between two and be arranged symmetrically with; Described cross steel bracket is separately provided with anti-sidesway bolt.
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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CN103225440B (en) * 2013-04-12 2015-07-01 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
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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