Pile washing device

Abstract

The invention belongs to the technical field of ocean platform construction, and discloses a pile washing-out device which comprises a first pile washing-out pipe, a second pile washing-out pipe, a bottom pile washing-out system and a top pile washing-out system. The bottom pile washing-out system is installed in a pile shoe opening through a pile shoe bottom plate and comprises a first base, a first positioning mechanism and a sliding sleeve, the first base is provided with a first via hole communicating with the external space, the first positioning mechanism is provided with a first flowing channel, and the sliding sleeve is arranged on the first positioning mechanism in a sleeving mode and controls connection and disconnection of the first flowing channel and the first via hole. The top pile washing-out system is installed in the pile shoe open hole through the pile shoe top plate and comprises a second base, a second positioning mechanism and a sliding plate, the second base is provided with a second via hole communicated with the external space, the second positioning mechanism is installed in the second via hole and provided with a second flowing channel, and the sliding plate is installed in the second flowing channel and controls connection and disconnection of the second flowing channel and the second via hole. The pile washing-out device can guarantee smooth pile washing-out operation and prevent impurities such as silt from entering the pile washing-out device when the pile washing-out operation is finished.

Description

technical field [0001] The invention relates to the technical field of offshore platform construction, in particular to a pile punching device. Background technique [0002] Offshore platforms are structures that provide production and living facilities during drilling, oil production, container transportation, observation, navigation and construction activities at sea. According to its structural characteristics and working state, it can be divided into three categories: fixed type, movable type and semi-fixed type. [0003] In general, the offshore platform is provided with pile legs and pile boots. The pile legs and the pile boots are provided with a pile punching system, which is used in the pile pulling operation after the pile is erected. The pile pulling operation is about to pull out the pile shoes inserted into the seabed. The traditional piling system is equipped with a nozzle at the pile boot. When the platform is pulling out the pile, the piling pump is started...

AI Technical Summary

Problems solved by technology

In view of the presence of a large amount of sand and gravel on the seabed, the structure of the above-mentioned pile-piercing nozzles is likely to cause clogging of the nozzles, which affects the efficiency of platform pile extraction; and under the working condition of a large depth of pile shoe penetration, the pile-extraction resistance increases, requiring a large Pile extraction can be carried out smoothly only with pile flushing pressure, but the pile flushing nozzle mentioned above cannot achieve the effect of increasing pile flushing pressure

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