Active heave compensation device for air winch and control method thereof

Abstract

The invention discloses an active heave compensation device for an air winch and a control method thereof. The active heave compensation device comprises a winch status detector, a flow and direction regulator and a heave compensation controller; the winch status detector comprises an acceleration sensor, an inclination sensor, a cable length sensor, a tension sensor and the like; the heave compensation controller is a core part of the whole device and composed of a CPU module, a communication module, an A/D acquisition module and a D/A output module; the flow and direction regulator is mounted at the front end of an air inlet of a pneumatic motor on the air winch, and composed of an air suction switching valve, a flow proportional regulating valve, a flow sensor, a cable retracting switching valve and a cable deploying switching valve. The active heave compensation device for the air winch is reasonable in structural design, and may control deploying and retracting of a cable and heave compensation for the air winch through the controller, and thus is suitable for operations of ocean platforms and port wharfs; as a result, the work fields of the air winch are expanded.

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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