A pipeline towing system for load testing on a ship's hull

Abstract

The invention provides a pipeline dragging system for a load test on a boat body. An operation line ceiling is arranged on the boat body; the pipeline dragging system comprises a front end winch mechanism, a back end winch mechanism, a guide device and a load device, wherein the front end winch mechanism comprises a front end winch and a front end steel wire rope; the front end winch is positioned in the boat body; the front end steel wire rope is connected with the front end winch; the back end winch mechanism comprises a back end winch and a back end steel wire rope; the back end winch is positioned on the operation line ceiling; the back end steel wire rope is connected with the back end winch; the guide device comprises a boat body fixed pulley, a support frame and a plurality of support frame pulleys; the boat body fixed pulley is arranged on the boat body; the support frame is arranged at the boat tail of the boat body; the support frame pulleys are arranged on the support frame; the load device comprises a subsea pipeline and a tensioner; the tensioner is positioned between the operation line ceiling and a main deck of the boat body; the tensioner tightly clamps the subsea pipeline; the front end steel wire rope is connected with the front end of the subsea pipeline; the back end steel wire rope is connected with the back end of the subsea pipeline. The pipeline dragging system has the advantages that the workload can be greatly reduced; the shipyard cost and the test time are reduced; the ship building period is shortened.

Description

technical field [0001] The invention relates to a pipeline towing system for carrying out load tests on a ship's hull. Background technique [0002] On the pipe-laying ship, the pipe-laying operation system will be equipped with a set of tensioner and A / R winch system for clamping and retracting the sea pipe. After the tensioner and A / R winch are loaded on the ship, based on the requirements of the equipment factory and the ship owner, the load test of the tensioner and A / R winch is generally carried out before the delivery of the ship to verify that the equipment can work normally after shipment And can achieve the design performance. The basic principle of the load test is: the shipyard provides an external tension to load the sea pipe clamped by the tensioner or the wire rope pulled by the A / R winch. If it slips out, or the A / R winch can overcome the external pulling force without slipping the rope, and all parameters of the tensioner or A / R winch operate normally, the ...

AI Technical Summary

Problems solved by technology

[0004] 1) A large-scale tooling pulley frame needs to be fabricated and welded to the structure of the stern opening, and the workload of fabrication and installation is large;

[0005] 2) Due to the large load, complex calculations and strength checks are required for the installation position of the tooling;

[0006] 3) The ship needs to adjust its posture so that the stern faces the pier and the ship needs to be moved;

[0007] 4) It is necessary to rent additional large-tonnage truck cranes;

[0008] 5) Considering this method comprehensively, although it is feasible, it is time-consuming and cost-intensive

[0010] The defect of the above-mentioned technical solution is that the workload is relatively large, and it is more time-consuming and cost-intensive

Images