CN102392550A - Reverse installation method for flue gas desulfurization and absorption tower - Google Patents
Reverse installation method for flue gas desulfurization and absorption tower Download PDFInfo
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- CN102392550A CN102392550A CN2011102661772A CN201110266177A CN102392550A CN 102392550 A CN102392550 A CN 102392550A CN 2011102661772 A CN2011102661772 A CN 2011102661772A CN 201110266177 A CN201110266177 A CN 201110266177A CN 102392550 A CN102392550 A CN 102392550A
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Abstract
The invention discloses a reverse installation method for a flue gas desulfurization and absorption tower. A wall plate of a tower body is constructed with a derrick mast reverse installation method; 12 derrick masts of which the load capacities are 20 tons are uniformly distributed at the bottom of the tower body along the circumference; and reverse installation is performed layer after layer till the tower body is assembled at last. The method comprises the following installation steps of: embedding an embedded part and installing a hoisting tool; assembling the tower body; detaching the hoisting tool and modifying the process; punching holes on the wall plate and installing an internal piece support structure; installing a tower top cover, an exit flue and an inlet flue; and paving a tower bottom plate. According to the installation method, transportation with large-sized automobiles and hoisting with large-sized hoisting equipment are eliminated, the installation cost is reduced greatly, the construction period is shortened, the high-altitude workload is reduced, and place limit is eliminated; and the reverse installation method can be widely applied to installation and construction of absorbing towers.
Description
Technical field
The present invention relates to flue gas desulphurization tower mounting technique, particularly relate to fume desulfurating absorption tower inverted order mounting method.
Background technology
Fume desulfurating absorption tower is the key equipment in the coal-fired flue gas desulfurization device of steam power station, and general fume desulfurating absorption tower is by the special processing and manufacturing of factory, and the merogenesis segmentation is transported to the erecting bed with full-sized car; On-the-spot large-scale crane lifting, the high-altitude welded and installed, the installation process occupied ground is big; Installation cost is high; Long in time limit, labour intensity is big, has also guaranteed not installation quality.
Summary of the invention
The technical problem that the present invention will solve; Be to have solved, all install to be welded on the ground and carries out, improve and guaranteed installation accuracy and quality without full-sized car transportation, large-scale hanging device; Greatly reduce installation cost, improved the fume desulfurating absorption tower inverted order mounting method of installation rate.
The technical scheme that adopts is:
Fume desulfurating absorption tower inverted order mounting method, its installation steps are following:
1., built-in fitting is buried underground and the lifting device installation
A, basic built-in fitting are buried and are lifted gin pole underground the location is set.
B, mounting seat ring flat-plate; The base ring flat-plate is adjusted to the absolute altitude of drawing requirement and carried out Primary Location with taper liner iron, stone bolt is installed, then anchor (bolt) hole is carried out the pouring of secondary concrete; Treat that concrete reaches after the installation strength; The base ring flat-plate is accurately located once more, and to the welding of base ring flat-plate, welding job finishes the back base ring flat-plate is carried out the pouring of secondary concrete.
2., tower body assembling
A, with spacing assembling moulding bed assembling first floor tower body wallboard.
After b, the assembling of first floor wallboard and the welding, second layer wallboard is encircled outside the first floor wallboard assembling second layer wallboard.
C, assembling second layer wallboard only surplus together vertically during the sealing weld bond with lead chain sling the first floor wallboard, until one, two layer of wallboard annular mouth alignment, and one, two layer of annular weld bond and the second layer are vertically sealed weld bond weld.
D, other layer of assembling wallboard that use the same method, and draw the six roots of sensation in the cat head position and draw rope, in assembling lifting process,, accomplish until tower body to keep the steady of tower body.
The interface of e, tower body and entry and exit flue the wallboard group to the time reserve, deform before the entry and exit flue is installed in order to control it, need reinforce in to process in group, formally install with δ=10mm steel plate, treat that tower body installs the back dismounting that is all over.
3., lifting device is removed and process corrections
After accomplishing the tower body lifting, remove gin pole and prescind the interim steel part that welds of all technological measures, and carry out necessary process corrections.
4., wallboard perforate, inner part braced structures are installed
A, treat that wallboard is installed entire infrastructure after, gas cutting carries out perforate by hand.
After b, perforate finish; Carry out the absorption tower inner supporting structure and install, the inner support beam adopts inverted order to install, and the lowermost layer brace summer promptly is installed earlier; When the brace summer on other upper strata was installed, the constructor can arrive construction location with interim cat ladder through the springboard that tower on the base layer support beam is established.
5., tower top cover and entry and exit flue are installed
After tower body construction finished, beginning tower top cover and entry and exit flue were installed, and tower top cover is installed on the spot, and the entry and exit flue is being assembled into diffusing sheet on the combined platform earlier in advance, and spare interface docks installation on will loose sheet and the absorption tower wallboard again.
6., the tower base plate is laid
The tower base plate carries out after the tower body construction finishes.The tower baseboard material gets in the tower through tower body bottom manhole or open top; Angle steel skeleton on the concrete basis, absorption tower should accurately be located before the final grouting concrete; The absolute altitude and the gradient all must obtain strict guarantee, and the end of angle steel skeleton reliably is connected with the base outer ring plate through a thick elongated doughnut-shaped steel plate of 5mm.The surface of angle steel skeleton also must be smooth, smooth.Behind the final grouting concrete, should polish repeatedly surperficial concordant to angle steel skeleton of concrete surface.The end face double as of angle steel skeleton is the backing plate of absorption tower base plate butt welding.The butt weld requirement of base plate and the end face of angle steel skeleton merge fully., base plate should clean before being placed on assigned position the angle steel skeleton end face comprehensively.Do not allow to occur the slit between base plate and the concrete basis, absorption tower, fill with synthetic resin if any the slit.
The present invention adopts upside-down construction, has removed full-sized car transportation, the lifting of large-scale hanging device from, has greatly reduced installation cost, has shortened the construction period, reduces amount of high-altitude operation, not limited by the place, can extensively in the installation of absorption tower, adopt.
Description of drawings
Fig. 1 is an assembling sketch map in absorption tower of the present invention.
2 layers of wallboard were encircled the sketch map outside 1 layer of wallboard when Fig. 2 was the assembling of tower wallboard.
The specific embodiment
Fume desulfurating absorption tower inverted order mounting method, its installation steps are following:
1., built-in fitting is buried underground and the lifting device installation
A, basic built-in fitting are buried and are lifted gin pole (totally 12) underground the location is set.
B, mounting seat ring flat-plate (see figure 2); The base ring flat-plate is adjusted to the absolute altitude of drawing requirement and carried out Primary Location with taper liner iron, stone bolt is installed, then anchor (bolt) hole is carried out the pouring of secondary concrete; Treat that concrete reaches after the installation strength; The base ring flat-plate is accurately located once more, and to the welding of base ring flat-plate, welding job finishes the back base ring flat-plate is carried out the pouring of secondary concrete.
2., tower body assembling
A, with spacing assembling moulding bed assembling first floor tower body wallboard.
B, see Fig. 2, after 3 assemblings of first floor wallboard and the welding, second layer wallboard 2 is encircled outside first floor wallboard 3, assembling second layer wallboard.
C, surplus together vertically during the sealing weld bond 2 of assembling second layer wallboards; Its wallboard is led the chain first floor wallboard 3 (too tight) of slinging with two 2 one 3t on the gin pole 4 up and down; Align until one, two layer of wallboard annular mouth, and one, the two layer of annular weld bond and the second layer are vertically sealed the weld bond welding.
D, assembling other (3-19) layer wallboard uses the same method; And at the dilatory rope of the cat head position traction six roots of sensation, in assembling lifting process with keep tower body steadily, treat that the tower body construction is after the 8th layer; Hoisting weight is near 74t; Promptly when the 9th layer of wallboard of construction, bring into use two 10t to lead chain on each gin pole 4, accomplish until tower body.
The interface of e, tower body and entry and exit flue the wallboard group to the time reserve, deform before the entry and exit flue is installed in order to control it, need reinforce in to process in group, formally install with δ=10mm steel plate, treat that tower body installs the back dismounting that is all over.The constructor gets in the tower from the smoke outlet flue interface through cat ladder during beginning; Construct to the gas approach interface, get in the tower from the gas approach interface.
3., lifting device is removed and process corrections
After accomplishing the tower body lifting, remove gin pole and prescind the interim steel part that welds of all technological measures, and carry out necessary process corrections.
4., wallboard perforate, inner part braced structures are installed
A, treat that wallboard is installed entire infrastructure after, gas cutting carries out perforate by hand.
After b, perforate finish, carry out the absorption tower inner supporting structure the about 5t of inner support beam maximum weight is installed; And it is outer that tower is all stretched out at its two ends, uses crane that it is hung in installation in position from cat head, and the inner support beam adopts inverted order to install; The lowermost layer brace summer promptly is installed earlier; When other upper strata brace summer is installed, springboard and abduction intertrochanteric fractures etc. can on the base layer support beam, be set up, with convenient construction.Seal weld is done with angle steel in the excessive position of wallboard partially perforation.In the installation process of absorption tower inner support beam, the constructor can set up interim cat ladder in tower, arrives construction location through interim cat ladder.
5., tower top cover and entry and exit flue are installed
After tower body construction finished, beginning tower top cover and entry and exit flue were installed, and tower top cover is installed on the spot, and the entry and exit flue is being assembled into diffusing sheet on the combined platform earlier in advance, and spare interface docks installation on will loose sheet and the absorption tower wallboard again.
6., the tower base plate is laid
The tower base plate carries out after the tower body construction finishes.The tower baseboard material gets in the tower through tower body bottom manhole or open top; Angle steel skeleton on the concrete basis, absorption tower should accurately be located before the final grouting concrete; The absolute altitude and the gradient all must obtain strict guarantee, and the end of angle steel skeleton reliably is connected with the base outer ring plate through a thick elongated doughnut-shaped steel plate of 5mm.The surface of angle steel skeleton also must be smooth, smooth.Behind the final grouting concrete, should polish repeatedly surperficial concordant to angle steel skeleton of concrete surface.The end face double as of angle steel skeleton is the backing plate of absorption tower base plate butt welding.The butt weld requirement of base plate and the end face of angle steel skeleton merge fully.Just before assigned position, should clean at base plate the angle steel skeleton end face comprehensively.Do not allow to occur the slit between base plate and the concrete basis, absorption tower, fill with synthetic resin if any the slit.
After the tower body installing and locating, just can carry out platform construction, install and finish.
Claims (1)
1. fume desulfurating absorption tower inverted order mounting method is characterized in that comprising the following steps:
1., built-in fitting is buried underground and the lifting device installation:
A, basic built-in fitting are buried and are lifted gin pole underground the location is set;
B, mounting seat ring flat-plate; The base ring flat-plate is adjusted to the absolute altitude of drawing requirement and carried out Primary Location with taper liner iron, stone bolt is installed, then anchor (bolt) hole is carried out the pouring of secondary concrete; Treat that concrete reaches after the installation strength; The base ring flat-plate is accurately located once more, and to the welding of base ring flat-plate, welding job finishes the back base ring flat-plate is carried out the pouring of secondary concrete;
2., tower body assembling:
A, with spacing assembling moulding bed assembling first floor tower body wallboard;
After b, the assembling of first floor wallboard and the welding, second layer wallboard is encircled outside the first floor wallboard assembling second layer wallboard;
C, assembling second layer wallboard only surplus together vertically during the sealing weld bond with lead chain sling the first floor wallboard, until one, two layer of wallboard annular mouth alignment, and one, two layer of annular weld bond and the second layer are vertically sealed weld bond weld;
D, other layer of assembling wallboard that use the same method, and draw the six roots of sensation in the cat head position and draw rope, in assembling lifting process,, accomplish until tower body to keep the steady of tower body;
The interface of e, tower body and entry and exit flue the wallboard group to the time reserve, deform before the entry and exit flue is installed in order to control it, need reinforce in to process in group, formally install with δ=10mm steel plate, treat that tower body installs the back dismounting that is all over;
3., lifting device is removed and process corrections:
After accomplishing the tower body lifting, remove gin pole and prescind the interim steel part that welds of all technological measures, and carry out necessary process corrections;
4., wallboard perforate, inner part braced structures are installed:
A, treat that wallboard is installed entire infrastructure after, gas cutting carries out perforate by hand;
After b, perforate finish; Carry out the absorption tower inner supporting structure and install, the inner support beam adopts inverted order to install, and the lowermost layer brace summer promptly is installed earlier; When the brace summer on other upper strata was installed, the constructor can arrive construction location with interim cat ladder through the springboard that tower on the base layer support beam is established;
5., tower top cover and entry and exit flue are installed:
After tower body construction finished, beginning tower top cover and entry and exit flue were installed, and tower top cover is installed on the spot, and the entry and exit flue is being assembled into diffusing sheet on the combined platform earlier in advance, and spare interface docks installation on will loose sheet and the absorption tower wallboard again;
6., the tower base plate is laid:
The tower base plate carries out after the tower body construction finishes, and the tower baseboard material gets in the tower through tower body bottom manhole or open top, and the angle steel skeleton on the concrete basis, absorption tower should accurately be located before the final grouting concrete; The absolute altitude and the gradient all must obtain strict guarantee; The end of angle steel skeleton reliably is connected with the base outer ring plate through a thick elongated doughnut-shaped steel plate of 5mm, and the surface of angle steel skeleton also must be smooth, smooth, behind the final grouting concrete; Should polish repeatedly surperficial concordant to angle steel skeleton of concrete surface; The end face double as of angle steel skeleton is the backing plate of absorption tower base plate butt welding, and the butt weld requirement of base plate and the end face of angle steel skeleton merge fully, before base plate is placed on assigned position, should clean the angle steel skeleton end face comprehensively; Do not allow to occur the slit between base plate and the concrete basis, absorption tower, fill with synthetic resin if any the slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102661772A CN102392550A (en) | 2011-09-09 | 2011-09-09 | Reverse installation method for flue gas desulfurization and absorption tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102661772A CN102392550A (en) | 2011-09-09 | 2011-09-09 | Reverse installation method for flue gas desulfurization and absorption tower |
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| CN102392550A true CN102392550A (en) | 2012-03-28 |
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| CN2011102661772A Pending CN102392550A (en) | 2011-09-09 | 2011-09-09 | Reverse installation method for flue gas desulfurization and absorption tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593065A (en) * | 2016-12-13 | 2017-04-26 | 中国二冶集团有限公司 | Tower body fast installation method |
| CN109437357A (en) * | 2018-11-28 | 2019-03-08 | 深圳市市政工程总公司 | The installation method of ammonia aeration and crystal system in building enclosure small space |
| CN111957176A (en) * | 2020-09-04 | 2020-11-20 | 杨虹 | Research and development of construction process of internal component of boiler desulfurization tower |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347703A (en) * | 2008-09-12 | 2009-01-21 | 中国第十七冶金建设有限公司 | Installation technique of metallurgical gas desulfuration absorbing tower |
-
2011
- 2011-09-09 CN CN2011102661772A patent/CN102392550A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347703A (en) * | 2008-09-12 | 2009-01-21 | 中国第十七冶金建设有限公司 | Installation technique of metallurgical gas desulfuration absorbing tower |
Non-Patent Citations (4)
| Title |
|---|
| 张海军: "吸收塔塔体倒装法施工", 《武汉大学学报(工学版)》 * |
| 李小丽: "脱硫塔倒装施工技术", 《安装》 * |
| 杨洁: "火力发电厂烟气脱硫装置吸收塔倒装工艺", 《硫磷设计与粉体工程》 * |
| 苏永波等: "玉环电厂1000MW机组脱硫吸收塔倒装施工法", 《电力建设》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593065A (en) * | 2016-12-13 | 2017-04-26 | 中国二冶集团有限公司 | Tower body fast installation method |
| CN109437357A (en) * | 2018-11-28 | 2019-03-08 | 深圳市市政工程总公司 | The installation method of ammonia aeration and crystal system in building enclosure small space |
| CN111957176A (en) * | 2020-09-04 | 2020-11-20 | 杨虹 | Research and development of construction process of internal component of boiler desulfurization tower |
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Application publication date: 20120328 |