System and method for controlling water feeding and water discharging of water ballast space of underwater operation platform

Abstract

The invention discloses a system for controlling water feeding and water discharging of a water ballast tank of an underwater operation platform. The system is used for controlling automatic water feeding and automatic water discharging of the water ballast tank. The water ballast tank is formed by a plurality of symmetrically-distributed sub-water-tanks, a sea valve is installed at the bottom of each sub-water-tank, at least one high-pressure air valve is distributed in each sub-water-tank, a plurality of air valves are installed at the top of each sub-water-tank, and depth meters are further symmetrically installed on the side walls of the head and the tail of the water ballast tank. The system further comprises a driving valve box installed in a control cabinet, the driving valve box is respectively connected with the high-pressure air valves, the sea valves and the air valves through signal lines, and a water feeding and water discharging PLC is further installed in the control cabinet and sends an instruction to the driving valve box for enabling the driving valve box to control the high-pressure air valves, the sea valves and the air valves to achieve water feeding and water discharging of the water ballast tank. The invention further discloses a multi-variable fuzzy decoupling control method based on state feedback, and the multi-variable fuzzy decoupling control method is used for achieving automatic control over water feeding and water discharging of the water ballast tank. The system is high in automation degree, accurate in control, convenient to operate and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of marine development and underwater control, and more particularly relates to a system and method for controlling the water intake and drainage of ballast water tanks on underwater operating platforms. Background technique [0002] With the increasing development and utilization of the ocean by human beings, marine special ships and offshore platforms are also developing in the direction of large-scale and multi-functional. At the same time, the requirements for the rapidity and stability of the offshore platform construction process are getting higher and higher. As marine special ships, semi-submersible ships, floating docks and large offshore platforms all use ballast water control technology to adjust the buoyancy of ships. The key to ship development applications. [0003] At present, the commonly used ballast water tank intake and discharge process is to realize the water intake and discharge operati...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above deficiencies or improvement needs of the prior art, the present invention provides a ballast water tank inlet and discharge control system and control method of an underwater work platform, the purpose of which is to provide an automatic control system to control the ballast water tank The drainage process is controlled, and the attitude information of the underwater operation platform is collected. According to the attitude information, the multivariable fuzzy decoupling control method is adopted to automatically adjust and control the inflow and displacement of the ballast water tank, so as to achieve the purpose of controlling the attitude of the underwater operation platform. This solves the technical problem of low automation and inaccuracy in the current ballast water tank inlet and discharge

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