A monitoring device and its scheme for a crane heave compensation device

Abstract

The invention discloses a monitoring system of a heave compensation device of a crown block and a method thereof. The monitoring system comprises: a position sensor unit 1, a pressure-rotating speed sensor unit 2, a connecting level stress strain measurement unit 3, and a data processing and storage unit 4. The position sensor unit 1 consists of a lower support rod (1), a laser distance sensor (2) installed at the upper side of the lower support rod (1), an upper support frame (3), a laser distance sensor reflecting device (4) installed at the lower side of the upper support frame (3). The pressure-rotating speed sensor unit 2 includes a rotating plate (5), a connecting lever handle (6), a shaft connected to the rotating plate (5), an axis pressure sensor (8) arranged at the center of the shaft (7), a magnetosensitive resistor rotating speed sensor (9), and a magnetosensitive resistor rotating speed sensor mating part (10); and the connecting level stress strain measurement unit 3 consists of a connecting lever (11), a fiber grating sensor (12), a heat-shrinking tube (13), and a filling resin unit (14) wrapping the fiber grating sensor (12). The sensors are installed in a pasting type mounting manner on the premise that the original heave compensation device structure is not changed, so that the original structural performances are not damaged; the operation becomes simple; the measurement precision is high; and the maintenance becomes simple and convenient.

Description

technical field [0001] The invention relates to a monitoring device for a heave compensation device of a drilling platform and its scheme Background technique [0002] The heave compensation device is an important component of the drilling system of the offshore drilling platform. By compensating the heave motion of the floating crown block, the heave motion of the drill pipe can be kept fluctuating within a certain range, and the bottom hole pressure can be stabilized to ensure the normal drilling operation. Take the heave compensation device of the crane as an example. When the heave compensation device is working, the traveling block moves up and down frequently with the hook, and the related connecting rods, bearings, and pulleys will also move accordingly during the movement. Long-term frequent movement will inevitably cause fatigue, excessive buckling and even damage to the mechanical structure, which greatly affects the safety of platform operations. At the same time...

AI Technical Summary

Problems solved by technology

Long-term frequent movement will inevitably cause fatigue, excessive buckling and even damage to the mechanical structure, which greatly affects the safety of platform operations

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