Plug type ocean lifting platform synchronous hydraulic system and control method thereof

Abstract

The invention discloses a plug type ocean lifting platform synchronous hydraulic system and a control method thereof. The hydraulic system comprises a first oil inlet pipeline, a second oil inlet pipeline, an oil return pipeline and an oil discharge pipeline and four oil inlet control devices for controlling corresponding lifting oil cylinders to ascend and descend; each oil inlet control device comprises a rod cavity oil inlet assembly for supplying oil to a rod cavity of the corresponding lifting oil cylinder and a rodless cavity oil inlet assembly for supplying oil to a rodless cavity of the corresponding oil cylinder; the hydraulic cylinder further comprises an upper plug control valve assembly and a lower plug control valve assembly. By adopting a parallel pipeline of rodless cavity electromagnetic ball valves and rodless cavity throttling valves of the rodless cavity oil inlet assemblies, synchronous operation of the lifting oil cylinders is achieved by detecting the stretchabledisplacement difference between the lifting oil cylinders and turning on or off the rodless cavity electromagnetic ball valves at the right moment.

Description

technical field [0001] The invention relates to the technical field of marine engineering, in particular to a synchronous hydraulic control system of a plug-type marine lifting platform. Background technique [0002] The jack-up platform is a kind of marine structure with lifting function widely used in marine engineering, which realizes the lifting of the platform through the lifting system. The lifting mechanism can be divided into rack and pinion type and hydraulic pin type. The rack-and-pinion lifting system has fast lifting speed, but the cost is expensive and the mechanism is complicated; the pin-type hydraulic lifting system has adjustable lifting speed, small investment and simple operation, especially the hydraulic system runs smoothly, with small inertia, quick response, and easy operation. automation control. [0003] At present, the commonly used hydraulic pin-type lifting platform adopts multi-cylinder and multi-pile control, and the multi-cylinder lifting in ...

AI Technical Summary

Problems solved by technology

The rack-and-pinion lifting system has fast lifting speed, but the cost is expensive and the mechanism is complicated; the pin-type hydraulic lifting system has adjustable lifting speed, small investment and simple operation, especially the hydraulic system runs smoothly, with small inertia, quick response, and easy operation. automation control

[0003] At present, the commonly used hydraulic pin-type lifting platform adopts multi-cylinder and multi-pile control, and the multi-cylinder lifting in the single pile barrel adopts mechanical rigid synchronization, which inevitably causes the moving ring beam or the fixed ring beam in the single pile to collide with the pile legs, and wear piles. leg phenomenon

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