Device for detecting lifting speed and position of spud leg of self-lifting platform, and using method thereof

Abstract

The invention discloses a device for detecting the lifting speed and the position of a spud leg of a self-lifting platform, and a using method thereof. The device comprises a detection part and a rack. The detection part is mounted at one end of the rack and comprises a friction wheel, a friction wheel rotating shaft, a bearing, a friction wheel mounting seat and a rotating sensor. During detecting, the wheel surface of the friction wheel makes contact with the spud leg, the friction wheel rotates along with ascending and descending of the spud leg; and the rotating sensor detects the angularvelocity and the angular displacement of the friction wheel rotating shaft during rotating. The device is used for detecting the real-time speed and the real-time position of ascending and descendingof the spud leg in the ascending and descending processes of the self-lifting platform, thus data support is provided for a lifting control system to adjust the lifting speed of the spud leg so as toenable the self-lifting platform to be keep level or enable the tilt angle of the platform to be within the 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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