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Recovery device for deep water submarine pipeline

A technology for submarine pipelines and recovery devices, which is used in pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve problems such as pin shaft tearing of submarine pipelines, and achieve the effect of reducing risk and improving efficiency.

Active Publication Date: 2018-11-27
CHINA NAT OFFSHORE OIL CORP +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the deep laying depth of the submarine pipeline, and due to the large recovery tension of the submarine pipeline and the influence of wind, waves, currents, etc., the submarine pipeline at the pipe head is prone to the risk of pin tearing; and when the pipe head passes through the stern It may also get stuck between the stinger rollers while the stinger is being

Method used

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  • Recovery device for deep water submarine pipeline
  • Recovery device for deep water submarine pipeline
  • Recovery device for deep water submarine pipeline

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Embodiment Construction

[0021] Such as figure 1 — Figure 6 As shown, the present invention includes: a shaft sleeve 3, an excitation device 6 connected to one end of the shaft sleeve 3 by bolt connection, a quick release mechanism 4 mounted on the excitation device 6 in a clamping manner, and a quick release mechanism 6 mounted on the shaft sleeve 3. The mechanical arm 5; wherein, the bushing 3 includes: a bushing shell 1, several bushing holes arranged on the bushing shell 1, load-bearing steel balls 2 set in the bushing holes, through the shaft bushing 3 Shrink or stretch, so that the load-bearing steel ball 2 is hidden in the bushing hole or contacts with the inner wall of the submarine pipeline 8 through the bushing hole.

[0022] The above-mentioned shaft sleeve 3 includes a wedge-shaped part, the head of the shaft sleeve 3 is installed with a seal, and the tail of the shaft sleeve 3 is made into a U-shaped hook for connecting the snap ring and the sling 9 .

[0023] Such as Figure 7 As sho...

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Abstract

The invention provides a recovery device of a deep water submarine pipeline. The recovery device comprises a shaft sleeve, an excitation device connected with one end of the shaft sleeve, a rapid separation mechanism mounted on the excitation device and a mechanical arm mounted on the rapid separation mechanism, wherein the shaft sleeve comprises a shaft sleeve casing, multiple shaft sleeve holes formed in the shaft sleeve casing and force bearing steel balls arranged in the shaft sleeve holes in a sleeving manner, and the force bearing steel balls are hidden in the shaft sleeve holes or contacted with the inner wall of the submarine pipeline through the shaft sleeve holes under the retracting or stretching action of the shaft sleeve. Under the condition that the structure of the submarine pipeline is not damaged, the recovery device can be sufficiently contacted with the inner wall of the submarine pipeline and provides sufficient recovery tension by extruding the inner wall of the submarine pipeline; moreover, the deep water submarine pipeline can be smoothly recovered to an operating line for maintenance and other operation; dangerousness in a recovery process is greatly reduced, and efficiency of offshore construction is improved.

Description

technical field [0001] The invention relates to the laying of submarine pipelines, in particular to a recovery device for deepwater submarine pipelines. It belongs to the field of offshore oil engineering. Background technique [0002] At present, as the laying of submarine pipelines moves from shallow water to deep water, when problems such as buckling or maintenance of submarine pipelines occur, deep-water submarine pipelines need to be recovered. However, due to the deep laying depth of the submarine pipeline, and due to the large recovery tension of the submarine pipeline and the influence of wind, waves, currents, etc., the submarine pipeline at the pipe head is prone to the risk of pin tearing; and when the pipe head passes through the stern It may also get stuck between the stinger rollers while the stinger is being removed. Contents of the invention [0003] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/20F16L1/16
CPCF16L1/166F16L1/20
Inventor 陈永訢燕晖于文太董广宁赵刚李建楠甘惠良田震赵福臣王晓飞邓欣旺范景涛王东辉董树阳孟祥伟
Owner CHINA NAT OFFSHORE OIL CORP
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