Construction method of multi-tube clustered titanium steel inner tube hydraulic steel strand lifting and flipping for chimney

Abstract

The invention relates to the field of buildings, and discloses a hydraulic steel-strand hoisting and inverted construction method for a chimney multi-bundled-tube type titanium steel inner barrel. A hydraulic hoisting jack is mounted on a steel platform firstly, an upper mast section is hoisted upwards by the height larger than the height of a mast section, then a whole circle of mast section is defined by barrel plates of a lower mast section, the lower mast section is hoisted upwards and welded to the upper mast section, and the operation is continuously repeated till the designed height of the titanium steel inner barrel is reached. The hydraulic steel-strand hoisting and inverted construction method has the following advantages and effects that the upper mast section is defined by the three barrel plates of the lower mast section, then longitudinal seams are welded, and thus the verticality of the mast sections during welding is guaranteed; and a chain block is used for tightening and closing the lower mast section for contraction, and it is guaranteed that the inner diameter of each mast section is equal to that of the upper mast section.

Description

technical field [0001] The invention relates to the field of construction, in particular to a construction method for lifting and flipping hydraulic steel strands of a multi-pipe cluster type titanium steel inner cylinder of a chimney. Background technique [0002] With the development of the economy, the construction of power facilities in various places is developing in the direction of large-scale, high-efficiency and environmental protection. Chimneys are indispensable engineering items for power plants. Because the inner cylinder of the chimney is prone to corrosion when exposed to flue gas, and seriously affects the service life of the chimney, and when multiple flue gas generators share a chimney, the maintenance of the chimney will affect the operation of the entire system. Therefore, cluster chimneys are increasingly used in power plant projects. [0003] At present, the application publication number is CN105507652A, and the Chinese patent with the publication da...

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Problems solved by technology

[0004] In step 5 of the chimney steel inner tube hydraulic lifting and flip-chip construction method, in the process of assembling the upper and lower standard sections, it is necessary to adjust the gap between the two standard sections through a hand chain hoist, and fine-tune the correction with a plug iron. Prevent the sagging of the barrel from affecting the roundness and docking of the steel inner barrel, but the accuracy of the adjustment and correction is difficult to guarantee through manual observation and judgment during the adjustment and calibration process

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