Submarine pipeline laying furrow opener

Abstract

The invention discloses a submarine pipeline laying furrow opener, which is suitable for furrowing operation of a hard soil sand seabed with the water depth of 500 meters. The device comprises a drillbit, cutter teeth, a rotating shaft, a mechanical sealing piece, a nozzle, an outer shell, a push-pull rod inner rod, a push-pull rod outer rod, a fixing rod, a fixing clamping piece, a filter screen, a hose, an inner cylinder, an inner pump, an inner pump fixing base, a water inlet pipe, a water outlet pipe, a waterproof motor, a speed reducer and other components; the waterproof motor drives the speed reducer, so that the speed reducer drives the rotating shaft, the cutter teeth and the drill bit to rotate; the special top bifurcated drill bit is adopted, the soil breaking capacity is higher, a push-pull rod controls the operation angle and depth of the furrow opener, seawater pumped by the inner pump is pressurized by the nozzle, high-pressure water can crush hard soil and sand blocksand reduce the furrowing resistance, and the seabed is furrowed in a mechanical and hydraulic jetting composite mode. The submarine pipeline laying furrow opener provided by the invention has the advantages of being good in furrowing effect, high in working efficiency, stable in working state, economical, safe and the like.

Description

technical field [0001] The invention relates to a ditch opener for laying submarine pipelines, which is suitable for ditching operations on hard soil and sand seabeds with a water depth of 500 meters, and belongs to the technical field of marine engineering equipment. Background technique [0002] In the 21st century, human beings have entered a new stage in the development of marine resources, and the scale of offshore oil development and construction has become increasingly large, resulting in the laying of more and more submarine pipelines. Since 1985, CNOOC has built 47 oil and gas fields in different domestic sea areas, and the total amount of submarine pipelines laid is about 3200km. With the continuous development of new oil fields, the total amount of CNOOC's subsea pipelines will also increase significantly. Submarine pipelines are oil and gas transportation tools that connect oil wells and platforms, as well as platforms and onshore storage and transportation faci...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of low working efficiency and poor soil-breaking effect of the opener in complex sea areas, the present invention provides a trench opener for laying submarine pipelines, which can excavate trenches with a depth of 1m and a width of 0.6m. Composite form, greatly improving the working efficiency of the opener

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