Active heave compensation device and control method for pneumatic winch

Abstract

The invention discloses an active heave compensation device and control method for a pneumatic winch. The heave compensation device includes a winch state detector, a flow and direction regulator, and a heave compensation controller. The winch state detector includes an acceleration sensor, Inclination sensors, cable length sensors and tension sensors, etc.; the heave compensation controller is the core part of the whole device, consisting of a CPU module, a communication module, an A / D acquisition module and a D / A output module; the flow and direction The regulator is installed at the front end of the air inlet of the air motor on the air winch, and is composed of an air intake switch valve, a flow proportional regulating valve, a flow sensor, a cable receiving switch valve and a cable releasing switch valve. The active heave compensation device of the pneumatic winch according to the present invention has a reasonable structural design, and can control the cable unwinding, cable take-up and heave compensation of the pneumatic winch through the controller, and can be applied to operations on offshore platforms and port wharves , Broaden the working field of pneumatic winch.

Description

technical field [0001] The invention relates to an active heave compensation device for a pneumatic winch, which belongs to the technical fields of electromechanical integration, sensing and measurement and control, and can be applied to industries such as ports, wharves and ocean engineering. Background technique [0002] Compared with the traditional electric winch and hydraulic winch, the pneumatic winch has a wider power range and speed range, has a higher starting torque, and can start with load. And more importantly, because its working medium is compressed air, it will not cause fire and has explosion-proof performance; there is no hidden danger of oil leakage, it will not pollute the working environment, and it has the characteristics of green environmental protection. [0003] Different from land operations, offshore platforms will undergo relatively large heave movements due to the influence of wind, waves, swells, and currents. Therefore, winches and other related...

AI Technical Summary

Problems solved by technology

Due to the lack of domestic research on aerodynamic fluid mechanics, domestic pneumatic winches are still in the open-loop control stage. Compared with electric winches and hydraulic winches, there are few studies on their heave compensation control, so domestic pneumatic winches It is used in some occasions with low operational requirements. For the occasions with high operational requirements such as deep sea oil mining, marine energy exploration, underwater robot operation and support, the pneumatic winch cannot give full play to its inherent advantages.

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