CN104816812A - Emergent propelling system and method - Google Patents

Abstract

The invention provides an emergency propulsion system, which includes a generator set configured according to the electrical load of the ship, a hydraulic clutch that can be disengaged and combined, a gear box, a propeller that rotates in water to generate thrust, and a shaft that connects the gear box and the propeller to transmit torque The generator set is already configured on the ship, and its rotating shaft protrudes from the tail end of the generator set, and there is a terminal connected to the hydraulic clutch; the other end of the hydraulic clutch is connected to the gearbox. Using the generator set already configured on the ship, extend the generator shaft from the tail end of the generator, connect the gear box through the clutch, configure the appropriate shafting and propeller, and form a simple generator set without affecting the power generation function of the generator set The propulsion system, when the main propulsion system loses power, the emergency propulsion system can realize the emergency propulsion function, which can ensure that the ship does not completely lose power during navigation, and provides a strong guarantee for navigation safety. The system has a simple structure, low price and saves space.

Description

An emergency propulsion system and method

technical field

The invention relates to the field of ship propulsion systems, in particular to an emergency propulsion system and method.

Background technique

Ships are the main tool of waterway transport ships. With the rapid development of shipping, the number of ships has increased sharply in the past ten years. Accidents of ships losing power during navigation happen from time to time. When the ship loses power, the rudder effect also disappears thereupon, and the ship will lose control. If there is a danger of capsizing in strong winds and waves; as in narrow waterways and reef areas, there is a danger of being grounded and hitting rocks; The conventional propulsion system of a ship is composed of a main engine, a gearbox, an elastic coupling, a shaft and a propeller. Failure of any one of the equipment can cause the propulsion system to fail. If the ship is only equipped with a single propulsion system, the ship will lose power immediately. At present, the single-screw ship has a dual-machine parallel configuration to realize the backup of the main engine, but when other equipment fails, it will also lose power, and the dual-machine configuration of this type of ship depends more on the needs of multi-working conditions, not from Safe sailing. More single-screw ships have only one propulsion system, and there is a greater risk of losing power.

At present, measures to reduce the risk of ships losing power mainly include improving the reliability of various equipment and strengthening repairs and maintenance, but they cannot fundamentally solve the hidden danger of ships losing power.

Contents of the invention

The technical problem to be solved by the present invention is to provide a low-cost, space-saving emergency propulsion system and method.

The technical solution adopted by the present invention to solve the above technical problems is: an emergency propulsion system, which is characterized in that it includes a generator set configured according to the power load of the ship, a hydraulic clutch that can be separated and combined, a gear box, The propeller that rotates to generate thrust, and the shaft that connects the gearbox and the propeller to transmit torque; the generator set is already configured on the ship, and its rotating shaft protrudes from the tail end of the generator set, and there is a terminal connected to the hydraulic clutch ; The other end of the hydraulic clutch is connected with the gearbox.

According to the above system, the shaft connecting the gearbox and the propeller to transmit torque includes an intermediate shaft and a tail shaft, the intermediate shaft is connected to the gearbox, the intermediate shaft and the tail shaft are connected through a coupling, and the tail shaft passes through the tail shaft tube Stretch out of the ship and connect with the propeller, and the stern tube is fixed on the hull structure.

According to the above-mentioned system, it is located on the side of the main propulsion system as a whole, and is parallel to the section passing through the midpoint of the ship's width along the length of the ship. The generator set is arranged on the side of the engine room, and the tail end of the generator points to the direction of the stern.

According to the above system, the hydraulic clutch includes a hydraulic system, the hydraulic system includes a hydraulic pump, the hydraulic pump is driven by the diesel engine in the generator set, and the start of the hydraulic pump is manually controlled.

According to the above-mentioned system, the reduction ratio of the propeller and the gear box is configured with the rated power of 80% of the diesel engine in the generator set and the line shape of the hull stern.

The emergency propulsion method realized by the above-mentioned emergency propulsion system is characterized in that:

When the generator set generates electricity, the clutch is disengaged, the gearbox, propeller shaft and propeller are in a static state, and no additional load is generated;

When starting the emergency propulsion system, gradually cut off the marine power load, then place the resistance of the generator excitation rheostat at the maximum position, disconnect the output switch to stop power generation, and keep the diesel engine in a no-load state. The box decelerates and the paddle shaft drives the propeller.

The beneficial effects of the present invention are: using the generator set already configured on the ship, the generator shaft is protruded from the tail end of the generator, the gear box is connected through the clutch, and the appropriate shafting and propeller are configured, without affecting the power generation function of the generator set Under the premise of a simple propulsion system, when the main propulsion system loses power, the emergency propulsion system can realize the emergency propulsion function, which can ensure that the ship does not completely lose power when sailing, and provides a strong guarantee for navigation safety. The system has a simple structure and a low price Inexpensive and space-saving.

Description of drawings

Fig. 1 is a top view of a generator set in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1. Generator set, 2. Diesel engine, 3. Generator, 4. Hydraulic clutch, 5. Gear box, 6. Intermediate shaft, 7. Coupling, 8. Tail shaft, 9. Tail shaft tube, 10 . Propeller, 11. Shaft.

Detailed ways

The present invention will be further described below in conjunction with example and accompanying drawing.

The present invention provides an emergency propulsion system, as shown in Figure 2, including a generator set 1 configured according to the electrical load of the ship, a hydraulic clutch 4 that can be separated and combined, a gear box 5, a propeller 10 that rotates in water to generate thrust, And the shaft that connects the gearbox and the propeller to transmit torque; the generator set is an existing configuration on the ship, as shown in Figure 1, it needs to be professionally transformed, and its rotating shaft 11 protrudes from the tail end of the generator set, and there is a The end of the hydraulic clutch 4, the strength of the rotating shaft 11 should not only meet the requirements of the power generation load, but also the load of the driving propeller 10, and the outlet of the generator casing at the rotating shaft 11 should be well sealed; the other end of the hydraulic clutch 4 and the gear box 5 connections.

The shaft connecting the gearbox and the propeller to transmit torque includes an intermediate shaft 6 and a tail shaft 8, the intermediate shaft 6 is connected with the gearbox 5, the intermediate shaft 6 is connected with the tail shaft 8 through a coupling 7, and the tail shaft 8 is connected through the tail shaft The pipe 9 stretches out of the ship and is connected with the propeller 10, and the stern shaft pipe 9 is fixed on the hull structure. The stern tube 9 fixes the stern shaft 8 on the hull structure and plays a sealing role. The sealing method adopts a widely used mature technology.

The system is located on the side of the main propulsion system as a whole, and is parallel to the cross-section passing through the midpoint of the ship's width along the length direction of the ship. The generator set is arranged on the side of the engine room, and the tail end of the generator points to the direction of the stern. The propellers of the emergency propulsion system are arranged in front of the propellers of the main propulsion system (that is, closer to the hull), and are staggered as far as possible in the direction of the length and width of the ship, but cannot exceed the maximum cross-section of the hull.

The hydraulic clutch includes a hydraulic system, the hydraulic system includes a hydraulic pump, the hydraulic pump is driven by the diesel engine in the generator set, and the start of the hydraulic pump is manually controlled.

The reduction ratio of the propeller and the gear box is configured with 80% of the rated power of the diesel engine in the generator set and the line shape of the hull stern.

The generator set 1 and the gear box 5 are fixed on the hull structure through the base.

The generator set is mainly used for power generation, and can generate electricity as usual when the ship is sailing normally without increasing the power generation load. When the main propulsion system of the ship loses power, the generator of the generator set stops generating power, and the generator set of the generator set A diesel engine is used as the power source for the emergency propulsion system. Using the emergency propulsion method realized by the above-mentioned emergency propulsion system, when the generating set is generating electricity, the clutch is disengaged, the gearbox, paddle shaft and propeller are in a static state, and no additional load is generated; when the emergency propulsion system is started, the marine electric load is gradually cut off, Then put the resistance value of the generator excitation rheostat at the maximum position, disconnect the output switch to stop power generation, make the diesel engine in the no-load state, and finally the clutch is combined to drive the propeller through gear box deceleration and propeller shaft transmission.

The above embodiments are only used to illustrate the design concept and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications based on the principles and design ideas disclosed in the present invention are within the protection scope of the present invention.

Claims (6)

1. An emergency propulsion system, characterized in that: it includes a generator set configured according to the electrical load of the ship, a hydraulic clutch that can be separated and combined, a gear box, a propeller that rotates in water to generate thrust, and a gear box that is connected to the propeller The shaft for transmitting torque; the generator set is already configured on board, and its rotating shaft protrudes from the tail end of the generator set, and there is a terminal connected to the hydraulic clutch; the other end of the hydraulic clutch is connected to the gearbox . 2. The emergency propulsion system according to claim 1, characterized in that: the shaft connecting the gear box and the propeller to transmit torque includes an intermediate shaft and a tail shaft, the intermediate shaft is connected with the gear box, and the intermediate shaft is connected with the tail shaft. The shaft is connected by a coupling, and the stern shaft is stretched out of the ship through the stern tube to be connected with the propeller, and the stern tube is fixed on the hull structure. 3. The emergency propulsion system according to claim 1, characterized in that: it is located on the side of the main propulsion system as a whole, and is parallel to the section passing through the midpoint of the ship's width along the length of the ship, and the generator set is arranged on the side of the engine room, and The tail end of the generator points to the direction of the stern. 4. The emergency propulsion system according to claim 1, characterized in that: the hydraulic clutch includes a hydraulic system, the hydraulic system includes a hydraulic pump, the hydraulic pump is driven by the diesel engine in the generator set, and the hydraulic pump The start-up is manually controlled. 5. The emergency propulsion system according to claim 4, characterized in that: the reduction ratio of the propeller and the gear box is configured with 80% of the rated power of the diesel engine in the generator set and the line shape of the hull tail. 6. The emergency propulsion method realized by the emergency propulsion system according to claim 1, characterized in that: When the generator set generates electricity, the clutch is disengaged, the gearbox, propeller shaft and propeller are in a static state, and no additional load is generated; When starting the emergency propulsion system, gradually cut off the marine power load, then place the resistance of the generator excitation rheostat at the maximum position, disconnect the output switch to stop power generation, and keep the diesel engine in a no-load state. The box decelerates and the paddle shaft drives the propeller.