High-performance ship suction inlet instant reversing device provided with water-jet propeller

Abstract

The invention belongs to an instant high-efficiency active reversing device for a high-performance ship, which takes a water-jet propeller as a propelling device, and is characterized in that under the condition that an original reversing device of the water-jet propeller is not changed, a movable folded plate mounted on the high-performance ship is arranged in front of a water suction pipe of the water-jet propeller, and the bending of water flow upstream of the water-jet propeller is realized; when parking or reversing is needed, a hydraulic oil cylinder is driven to enable a flow guide reversing plate to move to the position below the ship body and the upstream of a water inlet flow channel of the water-jet propeller along a supporting and positioning sliding rail, and the device is an active reversing device. Water flow bending is achieved on the upstream of the water-jet propeller, once an impeller rotates, thrust formed in the water inlet pipe at the earliest is backward, the reversing effect is instantly formed, due to the fact that the original forward thrust in the water inlet pipe is turned to be backward through water flow bending, efficiency is obviously improved, instant reversing of the high-performance ship in the static state can be achieved, and the forward rushing fault during reversing in the static state is avoided.

Description

technical field [0001] The invention relates to the technical field of high-performance ship power devices, in particular to a high-performance ship suction inlet instantaneous reversing device equipped with a water jet propeller. Background technique [0002] Waterjet propulsion has the advantages of high maneuverability, good maneuverability, strong cavitation resistance, small resistance, low vibration and noise, strong adaptability to shallow water navigation, and high propulsion efficiency at high speeds. It is used in high-speed passenger ferries and military high-performance ships. has a wide range of applications. As we all know, when ships operate on water, they will encounter various special situations, especially for high-performance ships, whose maneuverability and braking / reversing characteristics at high speeds are particularly important. [0003] But because the traditional reversing method of waterjet propeller is to install the reversing bucket for bending ...

AI Technical Summary

Problems solved by technology

Therefore, the efficiency of the classic reversing bucket reversing method is very low and the effect is poor, resulting in a long braking distance for high-performance ships

Especially when a high-performance ship needs to reverse in a stationary state, the forward force formed in the suction pipe due to the rotation of the impeller is earlier than the reverse thrust generated by the reverse water bucket, which will lead to an instantaneous forward rush of the high-performance ship , prone to ship / shore, ship / ship collision and other accidents

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