Hybrid hydraulic propulsion device

Abstract

The invention discloses a hybrid hydraulic propulsion device. The hybrid hydraulic propulsion device comprises a volumetric hydraulic pump driven by a motor, a filter is arranged on a water inlet of the volumetric hydraulic pump, and a safety valve is arranged on a water outlet of the volumetric hydraulic pump; and in addition, the water outlet of the volumetric hydraulic pump is connected with a hydraulic motor through a hydraulic control valve, the power output end of the hydraulic motor is connected with a propeller, and a water outlet of the hydraulic motor is connected with a nozzle arranged towards the propeller. The hybrid hydraulic propulsion device is an open hydraulic circuit system with pure sea water as a working medium, when the hydraulic motor is used for driving the propeller, the tail thrust counter propelling force of the hydraulic motor is used for pushing simultaneously, so that the problem of hydraulic oil leakage in the prior of the hydraulic propulsion technology in the prior art is solved, the propelling force is improved, thus the system energy loss is reduced and the utilization ratio of the working medium is increased Meanwhile, the system is good in safety and reliability and low in noise.

Description

technical field [0001] The invention belongs to the field of propulsion devices for marine vehicles, and in particular relates to a propeller-water jet hybrid hydraulic propulsion device in this field that realizes forward, reverse, braking and vector propulsion of equipment such as surface ships and underwater vehicles. Background technique [0002] The most widely used ship propulsion methods disclosed in the prior art include propeller propulsion (the main propulsion method) and water jet propulsion with negative displacement pumps, such as axial flow pumps and mixed flow pumps as the core. (1) Propeller propulsion is to install the propeller on the propulsion shaft below the waterline at the stern of the boat, and the main engine drives the propulsion shaft to rotate together, sucking water from the suction surface of the blade and discharging it from the discharge surface, and using the reaction force of water to push The boat moves forward. The theory of propeller pro...

AI Technical Summary

Problems solved by technology

Due to the use of negative displacement pumps for water jet propulsion, there are disadvantages such as high noise and low cavitation resistance; secondly, propeller propulsion is electric propulsion, which has disadvantages such as low propulsion efficiency and poor system overload protection capability

Therefore, neither the pod-type hydraulic propulsion technology nor the pump-propeller (negative displacement pump-propeller) hybrid propulsion technology in the prior art can meet the requirements of use well.

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