Elevating control system of self-elevating drilling platform

Abstract

The invention provides an elevating control system of a self-elevating drilling platform. The elevating control system comprises a monitoring module, a position module, a parameter module, a control module, a protection module and a system organization module. The monitoring module is used for monitoring the state of input and feedback variables. The position module is used for processing pile leg positions fed back by a pile leg position sensor and travel signals fed back by a pile leg motion travel limiting sensor, and the pile leg rack phase difference value is calculated through the fed-back real-time height values of three chords of each pile leg. The parameter module is used for controlling and adjusting the parameter of a motor frequency conversion controller. The control module is used for achieving elevating motion and torque redistribution according to the operation instruction of an operator. The protection module is used for triggering mechanical shutdown and/or electrical shutdown. The system organization module organizes and calls the monitoring module, the position module, the parameter module, the control module and the protection module. Monitoring, measuring and cooperative control can be carried out on elevating of the self-elevating drilling platform.

Description

technical field [0001] The invention relates to the control technology of an offshore oil drilling platform, in particular to a lifting control system of a self-elevating drilling platform. Background technique [0002] Jack-up drilling platform is the main equipment for offshore oil and gas exploration and development. Most of the existing jack-up drilling platforms use motors to drive racks to realize the lifting action of the platform. This type of platform is mostly composed of three legs, each leg includes three racks, and each rack is driven by multiple motors. The corresponding lifting control system controls dozens of lifting motors on the platform to run synchronously. [0003] At present, the jack-up platform jacking system manufactured by the drilling platform jacking system manufacturers in the world is basically a single speed mode, which cannot adapt to the high technical performance of the lifting pile leg speed, and the lifting load cannot adapt to the load ...

AI Technical Summary

Problems solved by technology

[0003] At present, the jack-up platform jacking system manufactured by the drilling platform jacking system manufacturers in the world is basically a single speed mode, which cannot adapt to the high technical performance of the lifting pile leg speed, and the lifting load cannot adapt to the load of the jack-up drilling platform. With increasing requirements, the synchronous control effect of the motor is poor, which affects the safety and reliability of the lifting system

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