Ocean engineering ship

Abstract

The invention belongs to the manufacturing field of ships, and in particular relates to an ocean engineering ship. The ocean engineering ship comprises two sets of propulsion systems; each propulsion system comprises a controllable pitch propeller with a conduit and a full-revolving propeller; the two sets of propulsion systems are respectively arranged on the symmetrical axes at the left and right sides of a stern. The propulsion system is a propulsion system mixed by a diesel engine and a motor; the controllable pitch propeller with a conduit is driven by the diesel engine; the full-revolving propeller is driven by the motor; one part of the conduit of the controllable pitch propeller with a conduit is embedded into the ship body; and the exposed part of the conduit, which is not embedded into the ship is transited with the ship in smooth. The ocean engineering ship provided by the invention has the following beneficial effects of reducing appendage resistance, improving the efficiency of the ship body, improving the high-speed performance of the ship, reducing the loss of wake stream by adopting an embedded conduit, obviously improving the efficiency of the propeller, enhancing the push force, effectively increasing the towing force of a tied column, increasing the manipulation redundancy, reducing the vibration and noise and having obvious energy-saving effect.

Description

Technical field [0001] The invention belongs to the field of shipbuilding, and in particular relates to a marine engineering ship. Background technique [0002] Among the marine engineering ships, AHTS ships with a power exceeding 10,000HP and PSV ships with a deadweight exceeding 2,000 tons are used as standards that can adapt to deepwater operations. The global shipowners update and build ships are also concentrated on high-power AHTS ships above 10,000 horsepower and 2,000 deadweight tons or more. PSV ships. The existing marine engineering ships mainly have the following defects: [0003] (1) Platform work boats generally have relatively large horsepower. The existing ship types are relatively small in hull size, resulting in limited propeller diameter, low open water efficiency and hull efficiency, low bollard drag, and low overall propulsion efficiency. As the horsepower of the main engine increases, the axis of the propeller is lower, and the main engine, gearboxes and the...

AI Technical Summary

Problems solved by technology

The support of the tail shaft of the herringbone frame will cause a large resistance of the attachment and consume a lot of energy

The multi-support structure also makes the construction process complicated

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