Parasitic seawater pump frame capable of going up and down

Abstract

The invention provides a liftable parasitic seawater pump frame, which mainly includes a guide protection pipe, a water lift pipe, a lift rack, a submersible pump, a seawater hose, a lift unit, a guide support arm and the like. The guide protection pipe is parasitic and fixed on the platform legs, and the lifting pipe is installed in the guide protection pipe and can slide along the guide protection pipe, which reduces the dependence on the stiffness of the seawater pump frame itself. At the same time, the lifting movement of the lifting pipe and the seawater pump is realized through the meshing of the lifting unit and the rack mounted on the lifting pipe. It has the characteristics of compact structure, light weight, flexible lifting and convenient operation. It reduces the dependence on the rigidity of the seawater pump frame under the marine environment conditions, and adapts to the water intake requirements under the large air gap operating conditions of the platform.

Description

technical field [0001] The invention relates to a freely ascendable parasitic seawater pump frame in the field of marine engineering devices, in particular to a freely ascendable parasitic seawater pump frame for a self-elevating platform with cylindrical legs. technical background [0002] The cylindrical leg jack-up platform is one of the essential equipment types in the process of ocean energy exploration and development. During the standing operation of the platform in the sea area, the main body of the platform is at a certain height from the sea surface (referred to as the air gap), and the seawater pump frame carried by it becomes the most important way of water intake to maintain the platform's fire protection, production, living and other activities. Its main working principle is : The seawater pump frame is lowered, the seawater is pumped into the seawater, and the seawater is introduced onto the platform through the pipeline on the seawater pump frame. At present...

AI Technical Summary

Problems solved by technology

However, as the air gap requirements of the platform continue to increase, the demand for the stiffness of the seawater pump frame continues to increase to resist the huge bending moment caused by the wave load, which eventually leads to a sharp increase in the cross-sectional size, structural weight, and cost of the seawater pump frame. The increase will bring adverse effects on platform operation safety, platform space utilization and cost control, etc.

Therefore, the use of independent truss-type pump racks under the conditions of platform large air gap operation is greatly restricted

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