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A riser anti-icing device for offshore platforms

An offshore platform and anti-icing device technology, applied in construction, artificial island, climate change adaptation, etc., can solve the problem of insufficient anti-icing ability of the riser, and achieve the effects of easy disassembly, prevention of ice accumulation and high reliability

Active Publication Date: 2021-06-18
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early stage of design, there is often a certain gap between the considered design conditions and the actual situation, resulting in insufficient ice resistance of the standpipe.

Method used

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  • A riser anti-icing device for offshore platforms
  • A riser anti-icing device for offshore platforms
  • A riser anti-icing device for offshore platforms

Examples

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Embodiment Construction

[0013] The invention provides an anti-icing device for a standpipe of an offshore platform, which is mainly used in the field of the offshore platform, and can prevent seawater around the standpipe from freezing and remove broken ice near the standpipe. The invention includes a motor, a bevel gear set and an anti-icing sleeve. The motor is installed and fixed under the deck of the offshore platform to provide rotational power for the entire device; the bevel gear set consists of two bevel gears of different sizes, the small bevel gear is installed on the motor shaft, the small bevel gear meshes with the large bevel gear, and the large bevel gear Installed on the upper end of the anti-icing sleeve; the surface of the anti-icing sleeve is provided with weight-reducing and anti-wave holes, and several rotating bearings are installed in the upper cylindrical section to ensure the stability of the device. The lower trapezoidal section of the device is located near the waterline, and...

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PUM

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Abstract

The invention provides an anti-icing device for an offshore platform riser, which belongs to the field of ocean engineering in ice regions; the invention includes a motor, a bevel gear set, an anti-icing sleeve, and a riser; the motor is fixed below the deck of the ocean platform; the bevel gear One end of the group is installed on the rotating shaft of the motor, and the other end is installed on the upper end of the anti-icing sleeve; the anti-icing sleeve is sleeved on the standpipe through a bearing and fixed; the invention realizes sea-facing sea ice in cold regions by rotating the anti-icing sleeve. At the same time, the wave-making plate inside the anti-icing sleeve will drive the seawater around the standpipe to move together, which can prevent the seawater around the standpipe from being damaged by freezing and ice accumulation; the invention has the advantages of high reliability and easy disassembly .

Description

technical field [0001] The invention relates to the field of ocean engineering in ice regions, in particular to an anti-icing device for risers of ocean platforms. Background technique [0002] On the sea surface in cold regions, sea water is easy to freeze, driven by wind and current, sea ice will move and cause damage to marine engineering structures. The riser is the main connection between the offshore platform and the subsea wellhead. Therefore, in the design of the riser in cold regions, the influence of sea ice on the riser structure needs to be considered to avoid damage to the riser structure caused by seawater freezing, so as to ensure its normal and continuous operation. In the early stage of design, there is often a certain gap between the considered design conditions and the actual situation, resulting in insufficient ice resistance of the standpipe. Therefore, it is very necessary to effectively protect the offshore platform riser structure. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/26E02B17/00
CPCE02B3/26E02B17/0021Y02A30/30
Inventor 庞福振彭德炜滕瑶刘大辉于博天李海超王铭霍瑞东
Owner HARBIN ENG UNIV