Rotary construction method of large equipment
A large-scale equipment and construction method technology, applied in the direction of building types, towers, buildings, etc., can solve the problems of unsuitable desulfurization absorption towers, etc., and achieve the effect of overcoming the difficulty of hoisting operations, solving the problem of large construction area and reducing costs
Active Publication Date: 2018-10-09
CEEC BEIJING ELECTRIC POWER CONSTR
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Problems solved by technology
[0005] Chinese Patent Publication No. 101664762 (publication date 2010.3.10) discloses a super-large archway side-standing rotation installation process, using a frame-type hoisting platform and two sets of slideways to realize the archway in place, but this method is not suitable for desulfurization absorption towers
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Embodiment 1
[0042] In the ultra-low emission reconstruction project of No. 1 and No. 2 units of Yuheng Power Plant, the outlet of No. 1 absorption tower A needs to be adjusted and connected to a new absorption tower. Due to its large weight (65 tons), large size, and limited space, the large-scale absorption tower of the present invention is adopted. The equipment rotation construction method is a small-pitch overall steering method.
[0043] The scope of reconstruction of the outlet of the original absorption tower is: the top plate of the existing absorption tower A and the outlet flue to the expansion joint.
[0044] Engineering Features:
[0045] (1) The construction site is high, there is no protection around, and the construction site is limited.
[0046] (2) The part to be adjusted has a large mass and strict angle requirements.
[0047] 1. Materials and equipment
[0048] Table 1 Main materials and equipment
[0049]
[0050]
[0051] 2. Construction preparation
[0052...
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The invention discloses a rotational construction method for large-scale equipment, and the rotational construction method is suitable for the condition that a to-be-rotated part of the equipment is located above a fixed part. The rotational construction method for the large-scale equipment comprises the steps that a reinforcing ring A and a reinforcing ring B are arranged on the outer side of the to-be-rotated part of the equipment and the outer side of the fixed part of the equipment correspondingly; a plurality of first lifting lugs are arranged on the to-be-rotated part in the circumferential direction; a plurality of jacks are arranged between the reinforcing ring A and the reinforcing ring B in the circumferential direction, the jacks lift and jack the to-be-rotated part so as to separate the to-be-rotated part from the fixed part, and then a plurality of rolling bars are inserted into the separation position; the jacks fall back to make the rolling bars bear the to-be-rotated part; and the first lifting lugs are pulled at the same time in one direction through a flexible rope so as to achieve rotation of the to-be-rotated part; the jacks are used for jacking the rotating part after the to-be-rotated part rotates to a preset angle, and then the rolling bars are removed, the jacks fall back, and the rotated part is spliced with the fixed part. The rotational construction method is a small-distance integral rotation method, has low requirement for the field and particularly suitable for the large-scale equipment with large mass and strict angle requirements, and tools are simple.
Description
technical field [0001] The invention relates to the technical field of large-scale equipment construction, in particular to a large-scale equipment rotating construction method. Background technique [0002] In recent years, due to the country's continuous emphasis on environmental indicators, the desulfurization absorption tower also needs to be transformed to achieve ultra-low emissions, so the transformation of the desulfurization absorption tower will become an inevitable trend in the future power plant transformation. The transformation of the desulfurization absorption tower needs to adjust the outlet of the original absorption tower and connect it to the new absorption tower. [0003] In the traditional rotating construction of large-scale equipment, large-scale hoisting equipment is used to hoist the large-scale equipment, and then an experienced hoist will command the hoisting and rotation, rotate to the designated position, and then perform welding restoration. ...
Claims
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IPC IPC(8): E04H12/34
CPCE04H12/34
Inventor 张旭李晓龙李军卫薛冬君肖栋杨金朝
Owner CEEC BEIJING ELECTRIC POWER CONSTR