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LNG storage tank in-tank pipeline mounting method

An installation method and inner pipeline technology are applied in hoisting devices, transportation and packaging, load hanging components, etc., which can solve the problems of high construction cost, high-altitude operation risk, and long construction time, so as to improve safety and avoid safety Risk issues, the effect of reducing altitude

Active Publication Date: 2017-07-07
CHINA NUCLEAR IND FIFTH CONSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of long construction time, high construction cost and high-altitude operation risk when using the existing technology to install the internal pipeline of the LNG storage tank, the present invention proposes a method for installing the internal pipeline of the LNG storage tank

Method used

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Embodiment Construction

[0022] The technical solutions in the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] combine figure 1 with figure 2 As shown, adopt the pipeline installation method in the LNG storage tank tank of the present invention, the concrete steps that the pipeline in the tank is installed are:

[0024] Step S1, prefabricating the pipeline in the tank. After the installation of the inner tank wall plate 11 and the storage tank dome 12 of the storage tank 1 is completed, all the segmented pipelines of the tank internal pipeline 2 are transported to the inside of the storage tank 1 . Carry out prefabrication work to tank inner pipeline 2 on the tank inner bottom plate 13, and place the tank inner pipeline 2 that has completed the prefabricated work horizontally on the tank inner bottom plate 13. In this way, by prefabricating super-long pipelines on the ground, the difficulty of operation can be reduced, the efficiency and ...

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Abstract

The invention belongs to the field of LNG storage tank construction, and particularly relates to an LNG storage tank in-tank pipeline mounting method. In order to solve the problems that in the prior art, when an LNG storage tank in-tank pipeline is lifted, construction time is long, construction cost is high, and aerial work risks exist, the invention discloses the LNG storage tank in-tank-pipeline mounting method. The LNG storage tank in-tank pipeline mounting method comprises the steps of prefabricating of an in-tank pipeline in a storage tank, mounting and arranging of a lifting device and lifting of the in-tank pipeline through a winch. According to the LNG storage tank in-tank pipeline mounting method, aerial lifting work risks on the outer portion of the storage tank can be avoided, safety in the lifting process can be improved, through arrangement of a lifting device in the storage tank, one-time lifting of the in-tank pipeline can be achieved, the lifting time can be shortened, and lifting construction cost can be reduced.

Description

technical field [0001] The invention belongs to the field of LNG storage tank construction, and in particular relates to a method for installing pipelines in an LNG storage tank. Background technique [0002] During the installation and construction of all LNG storage tanks, the installation of internal pipelines of the storage tanks will be involved, such as the installation of liquid inlet pipes, pump pipes and various instrument pipes. 160,000 m 3 Take the LNG storage tank as an example. The diameter of the inner tank of the storage tank is about 80 meters, and the height of the inner bottom plate of the tank is about 40 meters from the filling roof. The bottom plate extends vertically to the outside of the filling roof, so that the length of the liquid inlet pipe and pump pipe at the bottom is generally about 40 meters. [0003] At present, the installation of the internal pipeline of the storage tank is usually completed after the installation of the inner tank wall a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C1/12B66D1/20
CPCB66C1/12B66D1/20
Inventor 张鹏郭鹏亮林乐忠徐树凯王当当
Owner CHINA NUCLEAR IND FIFTH CONSTR CO LTD
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