Lifting speed and position detection device of jack-up platform pile leg and using method thereof

Abstract

The invention discloses a lifting speed and position detection device of a leg of a self-elevating platform and a method for using the same, comprising a detection part and a frame, the detection part is installed at one end of the frame; the detection part comprises a friction wheel, The rotating shaft of the friction wheel, the bearing, the mounting seat of the friction wheel and the rotation sensor, the wheel surface of the friction wheel is in contact with the pile leg during detection, and the friction wheel rotates with the lifting and lowering of the pile leg; the rotation sensor detects the rotation of the rotating shaft of the friction wheel angular velocity and angular displacement. It is used to detect the real-time speed and real-time position of the legs during the lifting process of the jack-up platform, so as to provide data support for the lifting control system to adjust the lifting speed of the legs, so as to keep the jack-up platform level or platform during the lifting process. The tilt angle is within a safe range.

Description

technical field [0001] The invention relates to the field of offshore platforms, in particular to a lifting speed and position detection device for jack-up platform legs and a method for using the same. Background technique [0002] All self-elevating platforms need to use a lifting mechanism to drive the legs of the platform to move up and down to realize the lifting of the platform. When the self-elevating platform reaches the working position, the legs are lowered, and the self-elevating platform is raised to a specified height on the sea surface; when the operation is completed and the return flight is completed, the self-elevating platform is lowered to the sea level. During the lifting process of the platform, there are problems that the lifting speed of multiple legs is not synchronized, causing the jack-up platform to tilt, causing the legs to be stuck or bent, and even causing mechanical damage to the legs, especially when the seabed below the drilling platform is n...

AI Technical Summary

Problems solved by technology

In the existing operation, the staff determine the position of the leg by visually observing the scale on the leg, but due to the relationship between distance and angle, the error of the test result is within ±3m, and the result can only be used for reference and has no practical significance; The lifting speed of the pile leg needs to be calculated indirectly by the lifting system, because considering the power loss, there is a certain difference between the indirectly obtained speed value and the actual speed value

Due to inaccurate detection data, it often happens that the tilt angle of the platform exceeds the safe range. At this time, it is necessary to manually adjust the height of each leg to make the platform level before continuing to lift the platform.

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