Pipeline tensioning device for pipe laying ship

Abstract

The invention relates to a pipeline tensioning device for a pipe laying ship, which pertains to the field of pipe tensioning devices. The pipeline tensioning device is characterized in that a seat assembly consists of a seat, a micro-motion lifting pedestal and an adjusting screw rod; a frame assembly consists of a frame seat, a lower frame, an upper frame and a lifting frame; the lower frame is arranged on the frame seat; the upper frame is arranged on the lower frame by a flange; the lifting frame can be moved up and down in the upper frame; a driving assembly consists of driving motors, a speed reducer, a driving shaft, a driven shaft and a chain wheel; a lower driving motor is arranged on the lower frame, while an upper driving motor is arranged on the lifting frame; a lifting assembly consists of a lifting motor, a speed reducer, a worm wheel and a worm and is arranged on the lifting frame; a track assembly consists of a chain, a carrier roller, a chain wheel and a V-shaped clamping component, and the lower part and the upper part of the track assembly are clamped tightly by air pockets. The pipeline tensioning device is operated and monitored by a control system in a remote manner and has the main advantages of motors for driving and lifting, the air pockets for clamping, fast and stable starting, simple, reliable and electricity-saving control and low cost of pipe laying construction.

Description

(1) Technical field [0001] The present invention relates to ships for laying pipelines, and also relates to underwater laying of pipelines, in particular to a tensioning device for controlling pipes used on board ships during the laying of pipelines. Specifically, the utility model relates to a pipeline tensioning device for a pipe-laying ship. (2) Background technology [0002] The pipeline tensioning device for pipe-laying ships is an important equipment on marine pipe-laying ships. During the pipeline laying process, the pipeline that has entered the water is affected by its own weight, waves and currents, and bears a large bending stress, and the bending stress is constantly changing. In order to keep the bending stress of the pipeline less than the yield limit of the material and ensure that the pipeline is not damaged, it is necessary to use a tensioning device to send the pipeline into the water, and adjust the tension of the pipeline in real time so that the tension...

AI Technical Summary

Problems solved by technology

So far, almost all the tensioning devices used for pipe laying ships are driven by hydraulic motors, and hydraulic cylinders are used for lifting and clamping. Although the tensioning force is large and the clamping is stable and reliable, the control system is complex and the power consumption is high. Equipment processing and manufacturing The cost is high, a dedicated hydraulic source is required, and a complete set of imported equipment is expensive

At present, the operating water depth of domestic self-designed and manufactured pipe-laying ships does not exceed 100 meters, and the diameter of the steel pipe is 100-1500 mm. It does not require too much tension and clamping force, and it is not suitable to use hydraulic power tensioning devices.

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