Pressure balance type floating body and mounting method thereof

Abstract

The invention relates to the field of ships, in particular to a pressure balance type floating body and a mounting method thereof. The floating body comprises water chambers, air chambers, air chamber inflation valves, a submersed pressure balancing control system, water chamber water passing systems and water chamber ventilation systems, wherein the interior of the floating body is divided into the water chambers and the air chambers. The center of buoyancy of the floating body and the gravity center of the floating body are in the same vertical line, and the center of buoyancy of the floating body is higher than the gravity center of the floating body. One air chamber inflation valve is arranged on each air chamber, and is connected with the submersed pressure balancing control system. One water chamber water passing system and one water chamber ventilation system are arranged on each water tank. The mounting method comprises the following steps: filling water into all the water chambers, lowering a main body of the floating body into the water and soaking the main body in the water, towing the main body of the floating body downwards, controlling the air pressure in each air chamber and external water pressure to be consistent, filling air in all the water chambers, and draining water in the water chambers to supply upward positive buoyancy. The pressure balance type floating body and the mounting method thereof have the advantages that the floating body can arrive at the working water area at one step, so that a large amount of manpower and physical resources are saved.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a pressure-balanced floating body and an installation method thereof. Background technique [0002] Floating production storage and offloading unit (FPSO), as the equipment for the development of offshore oil and gas resources, is widely used in oil and gas development under various water depth conditions. For deep-water floating production storage and offloading (FPSO), the working position of its underwater floating body is generally in deep water, and the outside of the floating body will bear a large water pressure. In order to prevent the structure of the floating body from being damaged due to the high water pressure, it is necessary to allow the inside of the floating body to have a pressure equivalent to the external water pressure. The traditional underwater floating body is designed based on a non-pressure-resistant structure. The floating body structure is a non-pressur...

AI Technical Summary

Problems solved by technology

However, due to the limited pressure bearing capacity of the floating body structure, the process of inflating the floating body must be carried out step by step, that is, the pressure and balance adjustment must be carried out every time a certain water level is reached. For example, the working water depth of an underwater floating body is about 300 meters. Calculated by performing such an operation every 5 meters (according to the setting of the pressure resistance capacity of the floating body), then the entire installation process requires dozens of such operations of pressure adjustment and underwater attitude adjustment of the floating body

Moreover, the traditional underwater floating body installation process is completed underwater through the control system with the help of the underwater operating system (ROV), so the installation process is difficult to achieve

The existing pressure control system cannot continuously control the pressure, and cannot achieve real-time measurement and real-time control

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