Installation method of pipeline in vertical storage tank
An installation method and technology of vertical storage tanks, which are applied in the directions of pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as deflection and deformation, improve accuracy, avoid high-altitude operations, and avoid pipe deflection and deformation. Effect
Active Publication Date: 2021-06-04
CIMC ENRIC ENGINEERING TECHNOLOGY CO LTD +2
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Problems solved by technology
[0006] The purpose of the present invention is to provide a method for installing pipelines in vertical storage tanks, so as to solve the problem in the prior art that the liquid inlet pipes that are hoisted as a whole are prone to deflection and deformation during the hoisting process
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[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various changes in different embodiments without departing from the scope of the present invention, and that the description and illustrations therein are illustrative in nature and not limiting. this invention.
[0030] In order to solve the problem of pipeline disturbance and deformation caused by hoisting the entire large storage tank in the related art, this embodiment provides a method for installing pipelines in a vertical storage tank. The vertical storage tank in this embodiment is mainly aimed at Large full containment LNG storage tank. This installation method improves the hoisting of the whole section to segmented upside-down hoisting, so that each section of the pipe section is hoisted vertically, avoiding the deformation of the pipe, ensuring the insta...
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The invention provides a method for installing pipelines in vertical storage tanks, which includes the steps of prefabricating pipe sections, installing hoisting equipment, placing ascending pipe sections, preparing pipe sections for centering, and assembling pipe sections in sections. In the segmental assembly step, a pipe section to be assembled is moved to the support seat, the lifting hook aligns the ascending pipe section and puts it on the pipe section to be assembled, and the ascending pipe section is coaxially connected with the pipe section to be assembled through the baffle, and welded Assembled together to form a new riser section. Repeat the above-mentioned steps of pipe section centering preparation, lifting pipe section and segmental assembly steps, and stack and assemble the remaining pipe sections one by one until they are assembled to form a complete pipeline. The installation method of the above-mentioned vertical storage tank internal pipeline is to replace the whole section of hoisting scheme by segmentally flipping and hoisting multi-section pipe sections, so as to avoid the problem of pipeline deflection and deformation, so as to realize the safe and efficient installation of pipelines in the inner tank.
Description
technical field [0001] The invention relates to the technical field of large-scale storage tank construction, in particular to a method for installing pipelines in vertical storage tanks. Background technique [0002] With the increase of demand for natural gas, the construction of large vertical storage tanks capable of storing a large amount of LNG (liquefied natural gas) is developing rapidly. [0003] The above-mentioned large vertical storage tank is a full-containment tank, which mainly includes an inner tank and an outer tank for wrapping the inner tank. Among them, the inner tank is used to store LNG. The outer tank is also provided with a thermal insulation layer for thermal insulation from the outside world. An annular interlayer is formed between the inner tank and the outer tank, and the annular interlayer is filled with heat insulating materials for heat preservation. [0004] The installation process of a large LNG storage tank involves many complicated proc...
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IPC IPC(8): F16L1/024
CPCF16L1/024
Inventor 王由胜
Owner CIMC ENRIC ENGINEERING TECHNOLOGY CO LTD