Auxiliary anode device applicable to ocean platform impressed current cathodic protection system, and installation method

Abstract

The invention relates to an auxiliary anode device applicable to an ocean platform impressed current cathodic protection system, and an installation method. Through the technical scheme, an ocean platform is used as a cathode; the auxiliary anode device is arranged in sea mud under a seabed surface; installation is accomplished through the steps of blowing a pit, placing and refilling, paving sandbags and the like; the auxiliary anode device is landfilled in a scouring pit of a seabed, and is stably fixed into the scouring pit by utilizing support pile legs and concrete fixing piers of the auxiliary anode device; and the sand bags are paved on the seabed surface of the scouring pit and a peripheral zone for covering and fixation , so that the problems of installation and fixation of an inservice sea platform auxiliary anode in a sea area with an unstable seabed surface and with sea ice are effectively solved, the auxiliary anode device is effectively prevented from being damaged by floating ice and worn by water flows, wind waves and silts, the difficulty in underwater operation is greatly simplified, and higher practicability and economical efficiency are realized.

Description

technical field [0001] The invention relates to an impressed current cathodic protection facility for an offshore platform, in particular to an auxiliary anode device and an installation method suitable for an impressed current cathodic protection system for an offshore platform. Background technique [0002] Regarding the installation of auxiliary anodes for impressed current cathodic protection systems on offshore platforms, the installation methods of foreign projects mainly include vertical tension anode systems, gravity anode systems and suspension anode systems. [0003] 1) The gravity anode system puts the anode on the gravity skid and on the sea mud. The disadvantage is that it is not resistant to wave action and seabed wear, and the auxiliary anode is often damaged. 2) The suspension anode system is easy to install and hangs on the In seawater, but the design life is only 5 years, and frequent replacement is required. 3) The vertical tension anode system was develop...

AI Technical Summary

Problems solved by technology

[0005] 1. Install and fix the clip: install and fix the anode on the clip of the jacket. The advantage is that the installation is relatively fixed and the cable protection is convenient. The disadvantage is that there are many underwater construction projects and tasks, and because it can only be fixed under the offshore platform, Extremely prone to current shielding

[0006] 2. Pile driving method, the anode is installed and fixed on the underwater support pile. The advantage is that the anode position can be placed in a more reasonable position, and the fixation is more stable. The disadvantage is that the construction workload is large and the cost is high;

[0007] 3. Concrete heavy lump: The anode is installed and fixed on the concrete heavy lump placed on the seabed. The advantage is that the construction is relatively simple and the cost is low. The disadvantage is that when the sea area is a muddy seabed, the seabed is unstable and will move due to the heavy lump. causing the cable to break

Images