US 11,505,869 B2 · Offshore tension anode system and installation method thereof

Abstract

The invention discloses an offshore Tension Anode system and an installation method thereof. The system comprises a tension platform, a tension device, a composite cable integrated with auxiliary anodes and reference electrodes, and a gravity type foundation base, wherein the tension device is installed on the tension platform; the upper end of the composite cable is tensioned by the tension device, and the lower end of the composite cable sinks to a seabed along with the gravity type foundation base and is anchored by the gravity type foundation base; and the composite cable integrated with the auxiliary anodes and the reference electrodes is a main part of the system. The system is simple in structure and convenient to install and transport. The invention further discloses the installation method of the system, which can safely and reliably install the offshore tension anode system on an offshore platform. The installation method mainly comprises: (1) lifting the composite cable and the gravity type foundation base to an offshore platform; (2) installing the gravity type foundation base on a seabed; (3) installing the composite cable; (4) tension adjustment and lock fixation of composite cable.

Claims7

Dependent claims

An offshore tension anode system, comprising a tension platform, a tension device, a composite cable, and a gravity type foundation base, wherein:

the composite cable is integrated with auxiliary anodes and reference electrodes, the tension device is installed on the tension platform, and a first end of the composite cable is connected to the tension platform through the tension device and a second end of the composite cable connects to the gravity type foundation base;
and
the gravity type foundation base comprises an upper block and a lower block, wherein the upper block and the lower block are separated from each other, a main lifting lug is arranged on the lower block, a main central hole is arranged in a center of the upper block, the upper block is placed above the lower block and the main lifting lug extends through the upper block via the main central hole, and a plurality of auxiliary lifting lugs are arranged on an upper surface of the upper block.

An installation method of an offshore tension anode system, comprising:

(1) lifting a composite cable and a gravity type foundation base to an installation platform by respectively lifting a cable reel spiraled with the composite cable integrated with auxiliary anodes and reference electrodes and the gravity type foundation base to the installation platform;
(2) installing the gravity type foundation base on a seabed by connecting a wire rope of a winch to a main lifting lug of a lower block, sinking the lower block to an intended position area defined by sandbags on the seabed, and then retrieving the wire rope;
and connecting the wire rope to a plurality of auxiliary lifting lugs of an upper block, sinking the upper block to let the main lifting lug of the lower block extend through a central hole of the upper block to complete assembling of the upper block and the lower block, and then retrieving the wire rope;
(3) installing the composite cable by connecting a first end of the composite cable spiraled on the cable reel to a heavy ball and the wire rope of the winch, and starting the cable reel to rotate to release the composite cable, sinking the composite cable in a proximity of the gravity type foundation base by descending the heavy ball and dragging the wire rope of the winch;
and connecting the composite cable to the gravity type foundation base by an ROV;
and
(4) tension adjustment and lock fixation of composite cable by connecting a second end of the composite cable to a tension rod device of a tension device on a tension platform;
tensioning the composite cable by the tension rod device to adjust tension of the composite cable in water;
and fixedly locking the composite cable with adjusted tension on the tension platform by a locking device of the tension device.

6 more elements

Dependencies are inferred from the claim text.

Offshore tension anode system and installation method thereof

Life of this patent

Offshore tension anode system and installation method thereof

Life of this patent

Abstract

Claims7