CN201744297U

CN201744297U - Structure for lifting absorbing tower from middle

Info

Publication number: CN201744297U
Application number: CN2010202769260U
Authority: CN
Inventors: 王建荣; 朱志飞; 廖欲元; 蔡少兵; 谭显东
Original assignee: Guangdong Power Engineering Corp
Current assignee: Guangdong Power Engineering Corp
Priority date: 2010-07-30
Filing date: 2010-07-30
Publication date: 2011-02-16
Anticipated expiration: 2020-07-30

Abstract

The utility model discloses a structure for lifting an absorbing tower from middle. The structure is characterized in that c a plurality of supporting upright columns are welded on the outer wall below the lift cutting position lifted by the middle of the absorbing tower, a plurality of shrink ring clamping plates are welded on the outer wall above the cutting position lifted by the middle of the absorbing tower, shrink rings are positioned below the shrink ring clamping plates and embedded on the outer side of the upper segment of an absorbing tower and in expansion fit with the upper segment of an absorbing tower, and a hydraulic jack support is fixedly mounted on the supporting upright columns in a way that the ejector rod supports the shrink rings from the bottom. The absorbing tower is cut into an upper segment and a lower segment, and the hydraulic jacks are started synchronously to lift up the upper segment of the absorbing tower, thereby achieving the lifting. The lifting process doesn't need the special crane, has no strict requirements to the environment surrounding the absorbing tower, and is simple and convenient to use.

Description

A kind of structure from the stage casing jacking absorption tower

Technical field

The utility model relates to the structure of the middle part jacking on the absorption tower that is used to handle tail gas in the thermal power plant.

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 as the specific slurries of spray in the flue gas to remove sulphur in the flue gas, reduce the sulfur content of flue gas, make it reach discharge standard.By the spraying layer decision, the quantity of spraying layer is many more usually for the effect of the desulfurization on absorption tower, and the effect of desulfurization is good more.

For the absorption tower after installing and using, the ability of its desulfurization is certain, and when power plant generated electricity because of 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 the 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 tons often up to a hundred needed 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 the scene needs enough spaces.And, a large amount of equipment and operating room often are installed near it for already used absorption tower, 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 send out the very long cycle of expense again.These situations all cause the process of increasing on absorption tower very difficult, even can't realize.

Summary of the invention

The purpose of this utility model is to provide a kind of structure from the stage casing jacking absorption tower.

Structure from the stage casing jacking absorption tower described in the utility model, it is welded with a plurality of support posts on the outer wall below the cut place of stage casing, absorption tower jacking, be welded with a plurality of shrink-ring clamps on the outer wall of the top, cut place of stage casing, absorption tower jacking, shrink-ring is positioned at the below of clamp, banding is on the epimere outer wall of absorption tower, the bearing of hydraulic jack is fixedly mounted on the support post, and its push rod is held shrink-ring from the bottom.

Structure from the stage casing jacking absorption tower described in the utility model when the absorption tower needs jacking, is drawn the line of cut of stage casing jacking in jacking place of stage casing, absorption tower; The a plurality of support posts of welding on the outer wall below the line of cut; The a plurality of shrink-ring clamps relative of welding on the outer wall above the line of cut with support post; Fill in shrink-ring in absorption tower upper end below the shrink-ring clamp; Between each support post and the shrink-ring hydraulic jack is installed, the bearing of hydraulic jack is fixed on the support post, and its push rod is held shrink-ring from the bottom side; Hydraulic jack holds out against in advance treats that jacking partly, makes hydraulic jack stressed; Along line of cut cutting absorption tower, the absorption tower is split up into upper and lower two sections; Start synchronously each hydraulic jack, with the absorption tower epimere slowly jacking put in place; Upper and lower section wallboard to the absorption tower is fixing with the interim welding of many I-steel; Increase wallboard newly in the intersegmental welding up and down on the absorption tower.

Structure from the stage casing jacking absorption tower described in the utility model, 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 outer wall on the bearing of hydraulic jack and absorption tower connects firmly, and the push rod of hydraulic jack is held the shrink-ring of the epimere outer wall 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 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 a jacking partial enlarged drawing partly in absorption tower among Fig. 1;

Fig. 3 is the structural representation of shrink-ring.

The specific embodiment

As Fig. 1, Fig. 2, a kind of structure from the stage casing jacking absorption tower, it is welded with a plurality of support posts 1 on the outer wall below the cut place of stage casing, absorption tower jacking, be welded with a plurality of shrink-ring clamps 2 on the outer wall of the top, cut place of stage casing, absorption tower jacking, shrink-ring 3 is positioned at the below of clamp, banding is on the outer wall of absorption tower epimere 4, and the bearing of hydraulic jack 6 is fixedly mounted on the support post 1, and its push rod is held shrink-ring 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 shrink-ring 3 as Fig. 3, can be formed by connecting as little jack 32 by multistage arc rod member 31 by hydraulic cylinder.The camber line of arc rod member 31 is consistent with absorption tower epimere 4 outer walls, and the arc rod member that connects 32 pairs of both sides of little jack of 31 of adjacent arc rod members imposes the power of inside pressure.Shrink-ring is subjected to the effect of little jack 32 after installing, and its energy banding imposes inside power to the absorption tower outer wall on the outer wall of absorption tower.Can make lifting process more stable, stressed better.

The push rod of hydraulic jack 6 is positioned at outside the shrink-ring 3, is close to the shrink-ring outside, and the end of push rod exceeds shrink-ring, and its inboard is fixed with supporting plate 7, holds shrink-ring 3 by supporting plate.The push rod of jack is close to the shrink-ring outside, can play position-limiting action to the absorption tower epimere, prevents to invade outside it mutually.

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.

Can weld the many guard bars 8 that prevent the inside inclination of absorption tower epimere, skew around the inboard of absorption tower hypomere 5, guard bar 8 extends upward, and is close on the inwall of absorption tower epimere 4.The absorption tower epimere is during by jacking, limit the absorption tower epimere around guard bar is can be from it inboard, prevents absorption tower epimere generation inclination, skew.

Claims

1. structure from the stage casing jacking absorption tower, it is characterized in that: be welded with a plurality of support posts on the outer wall of the below of the cut place of stage casing, absorption tower jacking, be welded with a plurality of shrink-ring clamps on the outer wall of the top, cut place of stage casing, absorption tower jacking, shrink-ring is positioned at the below of clamp, banding is on the epimere outer wall of absorption tower, the bearing of hydraulic jack is fixedly mounted on the support post, and its push rod is held shrink-ring from the bottom.

2. the structure from the stage casing jacking absorption tower according to claim 1, it is characterized in that: described shrink-ring 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 outer wall, connects hydraulic cylinder between adjacent arc rod member imposes inside pressure to the arc rod member of both sides power.

3. the structure from the stage casing jacking absorption tower according to claim 1, it is characterized in that: the push rod of hydraulic jack is positioned at outside the shrink-ring, is close to the shrink-ring outside, and the end of push rod exceeds shrink-ring, its inboard is fixed with supporting plate, holds shrink-ring by supporting plate.

4. the structure from the stage casing jacking absorption tower according to claim 1 is characterized in that: the push rod that is installed on a plurality of hydraulic jack on each support post fuses by rigid connector each other.

5. the structure from the stage casing jacking absorption tower according to claim 1 is characterized in that: weld the many guard bars that prevent absorption tower epimere inclination around the inboard of absorption tower hypomere, guard bar is close on the inwall of epimere on absorption tower.