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A self-tensioning tendon and its installation method

A tension tendon and self-tensioning technology, which is applied in anchoring arrangements, transportation and packaging, and ship construction, can solve problems such as low installation efficiency, increased installation risks, and long installation process time, so as to achieve tension and reduce installation Risk, installation time saving effect

Active Publication Date: 2019-07-26
708TH RES INST OF CSSC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire installation process takes a long time, requires a large amount of ballast water, and has disadvantages such as low installation efficiency and high operating costs; and the TLP is in an unstable state during the process from towage draft ballast to installation draft, and the excessively long ballast and unloading times, increasing installation risk

Method used

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  • A self-tensioning tendon and its installation method
  • A self-tensioning tendon and its installation method
  • A self-tensioning tendon and its installation method

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Embodiment approach

[0045] Figure 4 It is the schematic diagram of step 1 and step 2 of the self-tensioning tendon of the present invention, Figure 5 is the schematic diagram of step 3 of the self-tensioning tendon of the present invention, Image 6 It is a schematic diagram of step 4 of the self-tensioning tendon of the present invention, please refer to Figure 4 to Figure 6 shown.

[0046] In a further embodiment of the present invention, it also includes a method for installing self-tensioning tendons, including:

[0047] Step 1: Assemble the tension tendon main body 3 and the bottom connector 4 to form a single tension tendon, fix the temporary buoy 6 on the single tension tendon, lift the single tension tendon and lower it, insert the anchor foundation 5, and complete the tension tendon pre-installation;

[0048] Step 2: The floating platform 7 is towed to the installation site, positioned above the single tendon of the tension tendon, the guide rope is lowered and connected to the uppe...

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Abstract

The invention discloses a self-tensioning tension tendon and its installation method, which includes: a base, which is installed on the platform body of a floating platform or on the outside of a column; a top connector, which includes a hydraulic cylinder and a Tension ring, the cylinder body of the hydraulic cylinder is fixedly connected to the base, and the piston rod of the hydraulic cylinder is fixedly connected to the upper surface of the tension ring; the main body of the tension tendon is a hollow steel pipe structure, and the upper end of the main body of the tension tendon is connected to the upper surface of the tension ring. The tension ring is fixedly connected; the bottom connector, the lower end of the tension tendon main body is fixedly connected to the upper end of the bottom connector, and the lower end of the bottom connector is inserted into the anchoring foundation. The invention utilizes the expansion and contraction of the piston rod of the hydraulic cylinder to quickly dive the platform to the installation draft, thereby saving installation time.

Description

technical field [0001] The invention relates to the technical field of floating platform installation, in particular to a self-tensioning tension tendon. Background technique [0002] The oil and gas development of offshore engineering is gradually moving to the deep sea, and the offshore wind power generation technology is also gradually moving to the deep sea. The tension leg platform is widely used in deep sea oil and gas development and wind turbine installation. The tension leg platform generates a buoyancy that is far greater than the self weight of the structure through its own structural type, and the remaining part acts as a pre-tension, acting on the tension tendons, so that the tension tendons are in a pre-tensioned state, and the platform body is connected to the anchoring foundation through the tension tendons. . [0003] The traditional tension tendon installation is to perform ballast on the ballast water tank, so that the platform sinks to the installation d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B21/50
CPCB63B21/502
Inventor 田雪赵建亭单铁兵沈玉琦
Owner 708TH RES INST OF CSSC
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