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Gravity-type atmospheric dry chamber

A gravity-type, normal-pressure technology, applied in the field of dry tanks, can solve the problems of adding auxiliary components and equipment, increasing the difficulty of design and manufacturing, and prolonging the construction period, so as to shorten the maintenance period, shorten the installation time, and be safe and reliable in application Effect

Inactive Publication Date: 2010-03-31
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the suction anchor dry chamber are: the design and manufacture of the dry chamber are relatively high, and additional components and equipment need to be added, which increases the difficulty of design and manufacture and prolongs the construction period

Method used

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  • Gravity-type atmospheric dry chamber
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  • Gravity-type atmospheric dry chamber

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Embodiment Construction

[0021] refer to Figure 1 ~ Figure 4 , the present invention's gravity-type normal-pressure dry cabin includes: cabin body 1, anti-settling plate 3, side sealing door 4 and bottom sealing door 5, and working cabin body 1 is mainly formed by butt-welding of conduit, I-beam, and steel plate to form an upper opening The box-shaped steel structure provides a dry working environment for pipeline repair operators. The front side of the cabin body 1 is provided with a side sealing door 4, the bottom of the cabin body 1 is provided with a bottom sealing door 5, and the lower end of the cabin body 1 is vertically arranged and connected with an anti-sinking plate 3 on both sides of the cabin body 1. A stiffener plate 8 is connected between the plate 3 and the cabin body 1, and a platform 7 is arranged and welded on the top of the cabin body 1, and the platform 7 is a steel structure block.

[0022] The interior of the cabin of the cabin 1 is equipped with an escalator 6 that allows rel...

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Abstract

A gravity-type atmospheric dry chamber is provided with a chamber body, wherein the chamber body is a steel-structured box-shaped body with an opening at the upper end, and the front surface and the bottom of the chamber body are respectively provided with an air-tight door. The gravity-type atmospheric dry chamber is characterized in that both sides of the lower end of the chamber body are respectively provided and connected with an anti-sinking plate which is perpendicular to the chamber body, and the anti-sinking plates are connected with the chamber body by reinforcing rib plates. The invention has the advantages of simple structural design, short positioning time, convenient and rapid disassembly, high working stability, and high safety and reliability; the chamber body provides a dry working environment for pipeline maintenance work, so that operators can do normal welding work in the dry chamber; the chamber body can be quickly installed and bottomed without the restrictions ofwater areas and working site environment; and the dry chamber can shorten the construction time for subsea pipeline maintenance to a great extent.

Description

technical field [0001] The invention relates to a dry cabin, in particular to a gravity-type normal-pressure dry cabin used for providing a dry working environment for maintenance operations of underwater oil and gas pipelines. Background technique [0002] In offshore oil development projects, it is necessary to lay submarine oil and gas pipelines on the seabed to transport oil and natural gas extracted offshore. When the submarine oil and gas pipeline is damaged and oil and gas leaks, it is necessary to repair the submarine oil and gas pipeline in time to ensure the normal transportation of oil and natural gas. [0003] For the maintenance of existing submarine oil and gas pipelines, the pipe head of the submarine pipeline is usually raised above the water surface from the bottom of the sea. Welded flanges. When there is a large obstacle above the submarine pipeline, it must be removed before lifting the submarine pipeline. These operations will prolong the maintenance p...

Claims

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Application Information

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IPC IPC(8): F16L1/26
Inventor 潘东民王喆奉虎陈伟马洪新吴谊山陈祥余
Owner CHINA NAT OFFSHORE OIL CORP
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