CN101879407B - Structure and method for jacking absorption tower from middle segment - Google Patents
Structure and method for jacking absorption tower from middle segment Download PDFInfo
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- CN101879407B CN101879407B CN 201010241174 CN201010241174A CN101879407B CN 101879407 B CN101879407 B CN 101879407B CN 201010241174 CN201010241174 CN 201010241174 CN 201010241174 A CN201010241174 A CN 201010241174A CN 101879407 B CN101879407 B CN 101879407B
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- absorption tower
- jacking
- expansion loop
- hydraulic jack
- stage casing
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Abstract
The invention discloses a structure and a method for jacking an absorption tower from a middle segment. In the structure, a plurality of supporting upright posts are welded on the inner wall below a cut part jacked in the middle segment of the absorption tower, a plurality of expansion loop clamping plates are welded on the inner wall above the cut part jacked in the middle segment of the absorption tower, expansion loops are positioned below the clamping plates, plugged at the inner side of the upper segment of the absorption tower and tightly expanded with the inner wall of the upper segment of the absorption tower, the supporting seats of hydraulic jacks are fixedly installed on the supporting upright posts, and the expansion loops are supported by ejector rods thereof from the bottom. After the absorption tower is cut into the upper segment and a lower segment, the upper segment of the absorption tower can be jacked by synchronously starting each hydraulic jack to realize jacking. In the jacking process, a special crane does not need to be used, and the invention also has no requirement for the surrounding environment of the absorption tower and is simple and convenient.
Description
Technical field
The present invention relates in the thermal power plant structure and method for the treatment of the middle part jacking on the absorption tower of tail gas.
Background technology
The flue gas in thermal power plant needs to carry out purified treatment before discharging, so that it reaches environmental emission standard.The absorption tower is that thermal power plant is used for capital equipment that flue gas is handled, is provided with the multilayer spraying layer in it, by reducing the sulfur content of flue gas as the specific slurries of spray in the flue gas to remove sulphur in the flue gas, makes it reach discharge standard.The effect of the desulfurization on absorption tower determines that by spraying layer the quantity of spraying layer is more many usually, and the effect of desulfurization is more good.
For the absorption tower after installing and using, the ability of its desulfurization is certain, and when power plant generated electricity because using the higher bunker coal of sulfur content, the desulphurizing ability of the script on absorption tower was not enough possibly, causes amount of sulfur contenting in smoke to exceed standard.In this case, thermal power plant need transform the absorption tower, improves the desulphurizing ability on absorption tower, so that the requirement of using bunker coal can be satisfied in the absorption tower.
The quantity that increases spraying layer in the absorption tower is effectively to improve the important means of absorption tower desulphurizing ability, yet, spraying layer is usually located at the middle part on absorption tower, its top is equipped with equipment such as demister, the below is equipped with equipment such as oxidation air layer equipment and smoke inlet again, and the spraying layer of increase can't directly be packed into from top or the below on absorption tower.
By the absorption tower is cut near former spraying layer, after the use crane promotes the location, the newly-increased wallboard of welding, the method that increases spraying layer newly of packing into can realize above-mentioned transformation.Yet because the absorption tower volume is very big, diameter has more than ten meter usually, highly reaches tens meters, and after it cut, the weight of absorption tower epimere is tons up to a hundred often, needs to use lifting capacity very high, and the high crane of sling height, and it is to the requirement height of crane.Simultaneously, the volume of crane that satisfies these conditions is also very big, and need there be enough spaces at the scene.And for already used absorption tower, a large amount of equipment and operating room often are installed near it, all can not satisfy the use needs of above-mentioned crane usually, by removing equipment, satisfying the demand in the dismantling operation chamber, has both needed great workload, needs to spend the very long cycle again.These situations all cause the process of increasing on absorption tower very difficult, even can't realize.
Summary of the invention
The object of the present invention is to provide a kind of structure from the stage casing jacking absorption tower and a kind of method from the stage casing jacking absorption tower.
Structure from the stage casing jacking absorption tower of the present invention, its inwall below the cut place of stage casing, absorption tower jacking is welded with a plurality of support posts, be welded with a plurality of expansion loop clamps on the inwall of the top, cut place of stage casing, absorption tower jacking, expansion loop is positioned at the below of clamp, plug is in epimere inboard, absorption tower, with the inwall phase swelling of absorption tower epimere, the bearing of hydraulic jack is fixedly mounted on the support post, and its push rod is held expansion loop from the bottom.
Method from the stage casing jacking absorption tower of the present invention comprises the step of following order:
A. draw the line of cut of stage casing jacking in jacking place of stage casing, absorption tower;
B. the inwall below line of cut welds a plurality of support posts;
C. the inwall above line of cut welds a plurality of expansion loop clamps relative with support post;
D. in absorption tower upper end, fill in expansion loop below the expansion loop clamp;
E. between each support post and the expansion loop hydraulic jack is installed, the bearing of hydraulic jack is fixed on the support post, and its push rod is held expansion loop from the bottom side;
F. hydraulic jack holds out against in advance and treats that jacking partly, makes hydraulic jack stressed;
G. along line of cut cutting absorption tower, the absorption tower is split up into upper and lower two sections;
H. start each hydraulic jack synchronously, with the absorption tower epimere slowly jacking put in place;
I. fixing with the interim welding of many I-steel to the upper and lower section wallboard on absorption tower;
J. the newly-increased wallboard of intersegmental welding about on the absorption tower.
Structure from the stage casing jacking absorption tower of the present invention, the absorption tower is divided into upper and lower two sections from the cut place of stage casing jacking, be positioned at stage casing jacking place on the absorption tower a plurality of hydraulic jack are installed, the support post that welds on the hypomere inwall on the bearing of hydraulic jack and absorption tower connects firmly, and the push rod of hydraulic jack is held the expansion loop of the epimere inwall installation for the treatment of jacking on the absorption tower.By synchronous startup jack, just the epimere on absorption tower can be risen, realize the jacking on absorption tower.Then, by upper and lower intersegmental welding bracing piece and the newly-increased wallboard on the absorption tower, both can realize increasing of absorption tower, the part of increasing on the absorption tower is installed extra spraying layer.It can be under the situation that does not influence the absorption tower miscellaneous equipment, finish the transformation to the absorption tower, strengthen the desulphurizing ability on absorption tower, make the absorption tower can use sulfur content higher, inferior quality, when coal that price is lower acts as a fuel, the sulfur content in the flue gas can reach the environment protection emission requirement equally.Simultaneously, the process of its jacking absorption tower need not used special crane, and the environment of absorption tower periphery is not required, and is very simple, convenient.
Description of drawings
Fig. 1 is a kind of schematic diagram of the structure from the stage casing jacking absorption tower;
Fig. 2 is jacking partial enlarged drawing partly in absorption tower among Fig. 1;
Fig. 3 is the structural representation of expansion loop.
The specific embodiment
As Fig. 1, Fig. 2, stage casing, a kind of absorption tower climbing structure, its inwall below the cut place of stage casing, absorption tower jacking is welded with a plurality of support posts 1, be welded with a plurality of expansion loop clamps 2 on the inwall of the top, cut place of stage casing, absorption tower jacking, expansion loop 3 is positioned at the below of clamp, and plug is in absorption tower epimere 4 inboards, with the inwall phase swelling of absorption tower epimere 4, the bearing of hydraulic jack 6 is fixedly mounted on the support post 1, and its push rod is held expansion loop 3 from the bottom.
A plurality of hydraulic jack are complete set of equipments, adopt center hydraulic pumping unit control, and the hydraulic system UNICOM of each hydraulic jack can guarantee the hydraulic jack synchronization action.
Described expansion loop 3 as Fig. 3, can as little jack 32, be formed by connecting by multistage arc rod member 31 by hydraulic cylinder.The camber line of arc rod member 31 is consistent with absorption tower epimere 4 inwalls, and the arc rod member that connects the 32 pairs of both sides of little jack between adjacent arc rod member imposes to the power of extrapolation.Expansion loop is subjected to the effect of little jack after installing, and its energy swelling imposes outside power in the inboard, absorption tower to the absorption tower inwall.
The push rod of hydraulic jack 6 can be inserted in the expansion loop 3, is close to the expansion loop inboard, and the end of push rod exceeds expansion loop 3, and fixedly there is supporting plate 7 in its outside, holds expansion loop 3 by supporting plate, as Fig. 2.The push rod of jack is close to the expansion loop inboard, can play position-limiting action to the absorption tower epimere, prevents its phase medial deviation.
Be installed on the push rod of a plurality of hydraulic jack 6 on each support post 1 can be each other connector by good rigidlies such as angle steel, channel-section steels be linked to be a circle, be whole, play the uniformity of moving when can guarantee the hydraulic jack jacking, make the jacking process more smooth and easy, phenomenon such as avoid occurring tilting, rock.
Also can be again that the push rod diagonal angle of each hydraulic jack 6 is continuous, as be linked to be M shape, can further strengthen globality and stability.
Can weld the many guard bars 8 that prevent that the absorption tower epimere from rolling around the outside of absorption tower hypomere 5, guard bar 8 extends upward, and is close on the outside wall surface of absorption tower epimere 4.Absorption tower epimere 4 is during by jacking, and guard bar 8 can limit the absorption tower epimere around its outside, prevent that the absorption tower epimere from rolling.
Claims (5)
1. from the structure of stage casing jacking absorption tower, it is characterized in that: the inwall below the cut place of stage casing, absorption tower jacking is welded with a plurality of support posts, be welded with a plurality of expansion loop clamps on the inwall of the top, cut place of stage casing, absorption tower jacking, expansion loop is positioned at the below of clamp, plug is in epimere inboard, absorption tower, inwall phase swelling with the absorption tower epimere, the bearing of hydraulic jack is fixedly mounted on the support post, the push rod of hydraulic jack is inserted in the expansion loop, be close to the expansion loop inboard, the end of push rod exceeds expansion loop, and fixedly there is supporting plate in its outside, holds expansion loop by supporting plate.
2. the structure from the stage casing jacking absorption tower according to claim 1, it is characterized in that: described expansion loop is formed by connecting by hydraulic cylinder by multistage arc rod member, the camber line of arc rod member is consistent with absorption tower epimere inwall, and the hydraulic cylinder that connects between adjacent arc rod member imposes to the power of extrapolation the arc rod member of both sides.
3. the structure from the stage casing jacking absorption tower according to claim 1, it is characterized in that: the push rod that is installed on a plurality of hydraulic jack on each support post is connected by rigid connector each other.
4. the structure from the stage casing jacking absorption tower according to claim 1 is characterized in that: weld the many guard bars that prevent that the absorption tower epimere from rolling around the outside of absorption tower hypomere, guard bar is close on the outside wall surface of epimere on absorption tower.
5. from the method for stage casing jacking absorption tower, comprise the step of following order:
A. draw the line of cut of stage casing jacking in jacking place of stage casing, absorption tower;
B. the inwall below line of cut welds a plurality of support posts;
C. the inwall above line of cut welds a plurality of expansion loop clamps relative with support post;
D. expansion loop on the absorption tower
The below of clampFill in expansion loop;
E. between each support post and the expansion loop hydraulic jack is installed, the bearing of hydraulic jack is fixed on the support post, and the push rod of hydraulic jack is held expansion loop from the bottom side;
F. hydraulic jack holds out against in advance and treats that jacking partly, makes hydraulic jack stressed;
G. along line of cut cutting absorption tower, the absorption tower is split up into upper and lower two sections;
H. start each hydraulic jack synchronously, with the absorption tower epimere slowly jacking put in place;
I. to the absorption tower
Upper and lower section wallboard is fixing with the interim welding of many I-steel;
J. the newly-increased wallboard of intersegmental welding about on the absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010241174 CN101879407B (en) | 2010-07-30 | 2010-07-30 | Structure and method for jacking absorption tower from middle segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010241174 CN101879407B (en) | 2010-07-30 | 2010-07-30 | Structure and method for jacking absorption tower from middle segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101879407A CN101879407A (en) | 2010-11-10 |
| CN101879407B true CN101879407B (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010241174 Expired - Fee Related CN101879407B (en) | 2010-07-30 | 2010-07-30 | Structure and method for jacking absorption tower from middle segment |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731517B (en) * | 2016-12-22 | 2019-03-05 | 华润电力（菏泽）有限公司 | A kind of cylindrical body tower cutting jacking steering technique |
| CN109987555A (en) * | 2019-03-15 | 2019-07-09 | 中国电建集团江西省电力建设有限公司 | The construction method of pneumatic enhanced demister |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748800A (en) * | 2009-12-30 | 2010-06-23 | 河南四建股份有限公司 | Hydraulic lifting reverse method of chimney steel inner cylinder |
| CN201744276U (en) * | 2010-07-30 | 2011-02-16 | 广东火电工程总公司 | Structure for lifting-up absorption tower from the intermediate section |
-
2010
- 2010-07-30 CN CN 201010241174 patent/CN101879407B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748800A (en) * | 2009-12-30 | 2010-06-23 | 河南四建股份有限公司 | Hydraulic lifting reverse method of chimney steel inner cylinder |
| CN201744276U (en) * | 2010-07-30 | 2011-02-16 | 广东火电工程总公司 | Structure for lifting-up absorption tower from the intermediate section |
Non-Patent Citations (1)
| Title |
|---|
| 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》.2010,(第1期),46-48. * |
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| CN101879407A (en) | 2010-11-10 |
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Granted publication date: 20130717 Termination date: 20180730 |