Ship propeller

Abstract

The invention relates to a ship propeller, which comprises a pushing mechanism and a driving mechanism. The ship propeller is characterized in that the pushing mechanism comprises a cylinder sleeve, a piston, a piston connecting rod and a pressure-limiting automatic valve opening device, wherein the piston is sleeved in the cylinder sleeve, one end of the piston connecting rod is hinged with the piston, the other end of the piston connecting rod is connected with the driving mechanism, and the piston is provided with a valve rod hole and a ventilation hole; and the pressure-limiting automatic valve opening device comprises a valve, a valve rod, a spring and a spring bottom plate, wherein the valve is of a disk shape, the valve rod is inserted into the valve rod hole, one end of the valve rod is connected with the valve, the other end of the valve rod is connected with the spring bottom plate, and the spring is arranged between the piston and the spring bottom plate and is sleeved on the valve rod. The ship propeller has the beneficial effects that the ship propeller is simple in structure, low in manufacturing cost, reliable in work, high in propelling speed and low in noise, and is energy-saving and environment-friendly; and due to the simple structure, the loss in energy and power is reduced.

Description

technical field [0001] The invention relates to a ship power device, in particular to a ship propeller. Background technique [0002] The ship's propulsion device is a tool that provides thrust on the ship. Its function is to convert the power provided by the ship's power device into the main thrust and propel the ship forward. There are many forms of ship propulsion devices, such as gas turbine propulsion, propeller propulsion, electric propulsion, superconducting magnetic fluid propulsion, water jet propulsion, etc. Each propulsion method has its advantages and disadvantages. Among them, propeller propulsion and water jet propulsion are the most common propulsion methods. The disadvantages of propeller propulsion are: first, the structure is complex and there are many mechanical transmission links, which not only has a high failure rate, but also reduces the propulsion efficiency; second, the thrust of the propeller device is scattered during operation. In addition, the ...

AI Technical Summary

Problems solved by technology

Among them, propeller propulsion and water jet propulsion are the most common propulsion methods. The disadvantages of propeller propulsion are: first, the structure is complex and there are many mechanical transmission links, which not only has a high failure rate, but also reduces the propulsion efficiency; second, the thrust of the propeller device is scattered during operation. In addition, the frontal resistance of the propeller itself is relatively large, which limits the increase of the speed of the ship; the existing water jet propulsion has the advantages of high speed, low noise, environmental protection, energy saving and emission reduction. It is composed of a water pump, a water suction pipe, and a water spray pipe. Power, sucking water from the bottom hole of the ship, relying on the high-pressure water pump at the stern through the bottom pipe, ejecting high-pressure and high-speed water flow, and using the reaction force of the water flow to propel the ship's movement

The disadvantages of this water jet propulsion method are that the efficiency is low, the structure and process are complicated, the construction cost is high, the maintenance is difficult, and the high-pressure water pump is easily damaged.

In addition, the above two types are propelled along the water, which is not conducive to generating a large reaction force

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