JP4713954B2 - Electric propulsion device for ships - Google Patents

Description

  The present invention relates to a marine electric propulsion device that drives a propulsion device by an electric motor, and more particularly, to measures for effectively using the space in the ship and improving the installation of a power generation engine that generates electricity supplied to the electric motor.

Conventionally, as this type of marine electric propulsion apparatus, electric power generated by a generator is supplied to a load such as an electric motor or a cargo handling apparatus by a distribution board, and propulsion is performed by an electric motor that is rotated by the supplied electric power. A device that drives an apparatus (such as a propeller and a gear box) is known (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 2004-17805

  Incidentally, the generator is usually installed in the engine room, while the switchboard is arranged in the control room. In this case, since the engine room and the control room are separated from each other, the electricity generated by the generator is sent to the switchboard via the electrical path, and is distributed from the switchboard to loads such as the motor and the cargo handling device. Power will be supplied as follows. Therefore, the electrical path length from the generator to the switchboard becomes very long and complicated, and the wiring space of the electrical path increases.

  In addition, a plurality of power generation engines that generate electricity to be supplied to loads such as electric motors and cargo handling devices are provided, and each power generator and a drive source that individually drives these power generators make a pair. It is connected to. In that case, if the generator and the drive source are connected in pairs, if the generator engine itself is long in the axial direction with respect to the limited installation space, it will be difficult to detach and attach the generator engine. Detachability is very poor.

  The present invention has been made in view of the above points, and the object of the present invention is to reduce the required space on board and place an electric path from the generator by placing a plurality of units on one common platform. An object of the present invention is to provide a marine electric propulsion device that can shorten the length and the wiring space of an electric path and can improve the detachability of a power generation engine.

In order to achieve the above object, in the present invention, electricity generated by a plurality of generators is fed so that electricity is distributed to a motor by a switchboard, and the propulsion device is driven by a motor that rotates by the fed electricity. On the premise of a marine electric propulsion device, the switchboard is supplied with power to control the electricity generated by each of the generators, and the electricity controlled by the generator panel is distributed to the motor. Separated from the power supply panel. Then, each of the generators and a drive source for individually driving these generators are connected in a separable manner so as to form a pair, thereby forming a plurality of power generation engines, and the power generation in which the generators are fastened. The above-mentioned power generation engines are installed on the upper side of the single common base floor where the machine-side base floor and the drive source-side base floor where the drive source is fastened are fastened. Is installed.

  Due to this specific matter, each generator and each drive source are separably connected so as to be individually paired to form a plurality of power generation engines, so depending on the size of the limited installation space Each generator and each drive source are detached and detached, and the length of the power generation engine itself in the axial direction at the time of installation and carry-in becomes short, so that the detachability of the power generation engine can be improved. .

  In addition, since the generator panel separated from the switchboard is installed at the upper part of the generator side of the generator engine, an electrical path to each power supply panel is required along with the separation from the generator panel. The electrical path length from the generator to the generator panel can be made very short and simple, and the wiring space of the electrical path can be reduced.

In addition, each of the power generation engines is installed with the rotation shafts of the power generators arranged in parallel with each other, and the power generator panel spans between the power generators adjacent to each other in the upper part on the power generator side. It is built in. Therefore, the detachable name of each power generation engine can be improved, and the installation space can be reduced.

  Each power generation engine is configured to be separable into a generator group in which a plurality of generators are combined into one and a drive source group in which a plurality of drive sources are combined into one. Group is connected to each other by individually connecting each generator and each drive source via a highly elastic joint on a common platform, the generator group and the drive source group are separated. The length of the power generation engine itself in the axial direction at the time of installation and carry-in becomes short, and it is possible to further improve the detachability of the power generation engine. Moreover, since each generator of the generator group and each drive source of the drive source group are individually connected via a high elastic joint, the individual connection between each generator and each drive source is a high elastic joint. It is easy to carry out and is very advantageous for improving the detachability of the power generation engine.

  In addition, when the fuel system that supplies fuel to each drive source is connected to the fuel supply path on the hull side through one connection port, the drive source of each power generation engine is removed At the time, the fuel system collected for each power generation engine is connected to the fuel supply system on the hull side via one connection port, so that the fuel system can be easily connected between each drive source side and the hull side. This makes it possible to effectively improve the detachability of each power generation engine and reduce the number of pipe fitting man-hours at the shipyard.

  Further, the cooling water system for supplying and discharging cooling water to the coolers provided in each power generation engine is connected to the cooling water supply path and the cooling water discharge path on the hull side through one connection port. In the case of merging, the cooling water system collected for each power generation engine is connected to the cooling water supply path and the cooling water discharge path on the hull side through one connection port at the time of detaching each drive source. In addition, it is possible to easily connect the cooling water system between each drive source side and the hull side, to effectively improve the detachability of the power generation engine and to reduce the number of pipe fitting man-hours at the shipyard.

  Compared to the conventional system, the space inside the ship can be used more effectively, so if a freezer is installed in the engine room, an independent freezer room is provided so that the thermal load from the power generation engine is not applied to the freezer. It becomes possible to improve the cooling performance of the refrigerator. It is also possible to increase the space on board.

  In short, by placing a plurality of generator engines and generators on a common platform, the required space on board is reduced, and the number of man-hours for installing shipyards is reduced. Each generator is connected to each other in a separable manner to form a plurality of power generation engines, so that each generator and each drive source can be detached in accordance with the size of the limited installation space. And the length of the axial direction of power generation engine itself can be shortened, and the detachability of a power generation engine can be improved. Moreover, by installing the generator panel separated from the switchboard on the generator side of the generator engine, the electrical path length from the generator to the generator panel can be made very short and simple. The wiring space of the route can be reduced.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows an electric propulsion ship equipped with a marine electric propulsion device, and the electric propulsion ship S is provided with a hold 1 for storing loads such as harvested fish. The hold 1 is equipped with a freezer (not shown) so that harvested fish can be stored frozen. In addition, an electric motor room 2 partitioned from the hold 1 is provided at the rear of the electric propulsion ship S. An engine room 3 is provided between the electric motor room 2 and the hold 1 so as to be partitioned from the electric motor room 2 and the hold 1.

  The electric motor room 2 is provided with a marine electric propulsion device 20. As shown in FIG. 2, the marine electric propulsion device 20 includes first and second propulsion motors 23 as electric motors that individually drive left and right first and second propellers 21 and 22 as propulsion devices, respectively. 24, the driving force of each of the propulsion motors 23, 24 is decelerated by a speed reducer 29 and transmitted to the propellers 21, 22. The electric motor room 2 is provided with a rudder angle changing device 26 for changing the rudder angle of the rudder 25. In this case, the propulsion motors 23 and 24 and the rudder angle changing device 26 are driven (rotated) by electricity supplied by a switchboard 4 described later.

  As shown in FIG. 3, the engine room 3 is provided with first to third power generation engines 31 to 33. Each of the power generation engines 31 to 33 includes a power generator 35 provided for each of the power generation engines 31 to 33 and a diesel engine 34 as a drive source for individually driving the power generators 35. A generator 35 and a diesel engine 34 are paired every 33. The generators 35 of the power generation engines 31 to 33 are arranged at predetermined intervals with the rotation shafts 35a arranged in parallel to each other, while the diesel engine 34 is a generator 35 for each of the power generation engines 31 to 33. The crankshaft 34a is disposed on the same axis with respect to the rotary shaft 35a. As shown in FIG. 4, the generator 35 and the diesel engine 34 of each of the power generation engines 31 to 33 are respectively connected to the dedicated generator-side platform D1 and the drive source-side platform D2 with bolts B1,. Only the generator side platform D1 is shown) and is fixed. The generator side base D1 and the drive source side base D2 are fastened and fixed to the common base D fixed to the floor of the engine room 3 by bolts B2,.

  The generator 35 and the diesel engine 34 of each of the power generation engines 31 to 33 have a high elasticity on the common platform D. The rotating shaft 35a of each generator 35 and the crankshaft 34a of each diesel engine 34 are individually highly elastic. They are connected by being connected through a joint 37. As this highly elastic joint 37, what was mainly shape | molded with the rubber | gum is applied.

  Moreover, as shown in FIG. 5, the fuel system which supplies a fuel with respect to the diesel engine 34 of each said power generation engines 31-33 is put together in one with respect to the hull side fuel supply path. Specifically, the fuel system is connected to the fuel pumps 34b,... Individually attached to the diesel engines 34, and the downstream ends branched to the fuel pumps 34b, and are combined into one on the upstream side. And an upstream end 38a of the fuel supply pipe 38 is connected to the fuel supply path S1 on the hull side via one connection port 39.

  Further, the electric propulsion ship S distributes electricity generated by the generator 35 of each of the power generation engines 31 to 33 to the propulsion motors 23 and 24, the rudder angle changing device 26, and the drive motor 36 of the refrigerator. A distribution board 4 (appearing in FIG. 2) for supplying power is provided. As shown in FIG. 6, the distribution board 4 includes a generator board 41 that controls electricity generated by the generator 35 of each of the power generation engines 31 to 33, and an individual electric path 44 a to the generator board 41. , 44b, and the electric power controlled by the generator panel 41 is converted into inboard loads 5 such as the propulsion motors 23 and 24, the steering angle changing device 26, and the drive motor 36 of the refrigerator (shown in FIG. 2). Are separated into two power supply panels 42 and 43 for supplying power so as to be distributed. The generator panel 41 includes a propulsion motor starter panel (not shown) for starting the first and second propulsion motors 23 and 24. And the said generator panel 41 is installed in the state constructed so that it might straddle between adjacent generators 35 and 35 in the upper part by the side of the generator 35 of each said power generation engines 31-33. In this case, the power supply panels 42 and 43 are installed in a control room (not shown). Further, bus ducts are applied as the electric paths 44a and 44b.

  Therefore, in the above embodiment, each generator 35 and each diesel engine 34 are separably connected so as to form a pair, and thus the three power generation engines 31 to 33 are configured. Each generator 35 and each diesel engine 34 are detached in accordance with the size of the limited installation space, and during the installation work, the axial direction of each of the power generation engines 31 to 33 (the rotation of the generator 35) The length in the direction of the shaft 35a and the direction of the crankshaft 34a of the diesel engine 34 is also short, so that the detachability of the power generation engines 31 to 33 can be improved.

  In addition, the generator panel 41 separated from the switchboard 4 is installed in a state of being laid across the generators 35, 35 adjacent to each other at the upper part of the generator engines 31 to 33 on the generator 35 side. Therefore, although the electrical paths 44a and 44b between the power supply panels 42 and 43 are required in conjunction with the separation from the generator panel 41, the generator panel 41 is connected to the generator panel 41 of each engine unit 31 to 33. The electrical path length to the electrical path 44 can be made very short and simple, and the wiring space of the electrical paths 44a and 44b can be reduced. In addition, the appearance can be improved without exposing the electrical path from the generator 35 to the generator panel 41 of each of the power generation engines 31 to 33 to the outside. In addition, the installation space for the generator panel 41 is not required, and the installation space can be greatly reduced as compared with the case where the switchboard is installed.

  Further, the generator 35 and the diesel engine 34 of each of the power generation engines 31 to 33 are fastened and fixed to the dedicated generator side platform D1 and the drive source side platform D2 by bolts B1,. Since the generator side platform D1 and the drive source side platform D2 are fastened and fixed to the common platform D fixed to the floor surface of the engine room 3 by bolts B2,. The generator 35 and the diesel engine 34 of each of the generator engines 31 to 33 are simply detached from the dedicated generator-side platform D1 and the drive source-side platform D2, respectively, and the detachability of the generator 35 and the diesel engine 34 is improved. In addition, the power generation engines 31 to 33 can be easily detached from the common bed D by loosely tightening the bolts B2,... To improve the detachability of the power generation engines 31 to 33. Rukoto can.

  Moreover, since the generator 35 and the diesel engine 34 of each of the power generation engines 31 to 33 are individually connected via the high elastic joint 37, the generator 35 and the diesel engine 34 of each of the power generation engines 31 to 33 are connected. Individual connection is easily performed by the high-elasticity joint 37, which is very advantageous for improving the detachability of the power generation engines 31 to 33.

  Further, the upstream end 38a of the fuel supply pipe 38 that branches the downstream end of each fuel pump 34b of the fuel system that supplies fuel to the diesel engine 34 of each of the power generation engines 31 to 33 is the fuel supply path S1 on the hull side. In other words, when the diesel engine 34 of each of the power generation engines 31 to 33 is attached or detached, the fuel between the diesel engine 34 side and the hull side of each of the power generation engines 31 to 33 is connected. The system can be easily engaged in one place, and the detachability of each of the power generation engines 31 to 33 can be effectively improved.

  In addition, this invention is not limited to the said embodiment, The other various modifications are included. For example, in the above-described embodiment, the generator 35 and the diesel engine 34 of each of the power generation engines 31 to 33 are fastened to the dedicated generator side platform D1 and the drive source side platform D2 by bolts B1,. The side base D1 and the drive source side base D2 are fastened and fixed to the common base D by bolts B2,..., But as shown in FIG. Are separated into a generator group 35A in which the three diesel engines 34,... Are combined into a drive source group 34A in which the three diesel engines 34,. Are fastened to a dedicated generator group platform D3 and a drive source group platform D4 with bolts (not shown), respectively, and the generator group platform D3 and the drive source group platform D4 are connected to the common platform D. Fasten with bolts B2, ... It may be as is. In this case, the generator group 35A and the drive source group 34A are detached and detached, and the lengths of the respective power generation engines 31 to 33 themselves in the axial direction are shortened. Further improvement can be achieved.

  Further, as shown in FIG. 8, the cooler 6 is provided in each of the power generation engines 31 to 33 (diesel engine 34) in the engine room 3, and the downstream ends of the coolers 6 are branched to supply cooling water. In addition, the cooler side cooling water supply passage 71 (cooling water system) in which the upstream side is united and the upstream ends of the respective coolers 6 are branched to discharge the cooling water, and the downstream side is united. A cooling-side cooling water discharge passage 72 (cooling water system), and an upstream end 71a of the cooling-side cooling water supply passage 71 is connected to one hull-side cooling-side cooling water supply path S2. And the downstream end 72a of the cooler side cooling water discharge passage 72 may be connected to the hull side cooler side cooling water discharge path S3 via one connection port 74. . Furthermore, the downstream end branches to the diesel engine 34 of each of the power generation engines 31 to 33 to supply cooling water, and the upstream side is combined into a drive source side cooling water supply passage 75 and each diesel engine 34. On the other hand, a driving source side cooling water discharge passage 76 is provided, the upstream end of which branches off and discharges the cooling water, and the downstream side is integrated into one. The upstream end 75a of the driving source side cooling water supply passage 75 is on the hull side. The drive source side cooling water supply path S4 (cooling water supply path) is connected through one connection port 77, and the downstream end 76a of the drive source side cooling water discharge passage 76 is connected to the hull side drive source side cooling. You may make it connect via the one connection port 78 with respect to water discharge path S5 (cooling water discharge path). In this case, each power generation engine 31 to 33 can be easily engaged with each other between the diesel engine 34 side and the hull side at one place, and the detachability of the power generation engines 31 to 33 can be effectively improved. It becomes possible. In addition, since the power generation engine provided with the cooler 6 on each of the power generation engines 31 to 33 or the common bed D in the engine room 3 can be installed in a smaller space than in the prior art, the power generation engine can It is possible to improve the cooling performance without applying a load to the refrigerator, and it is also possible to expand the space in the ship.

  In the above-described embodiment, the case where the present invention is applied to the electric propulsion ship S including the hold 1 for storing the cargo such as harvested fish has been described. Needless to say, it can also be applied to a cargo hold that can be equipped with a passenger boat or a passenger ship equipped with a passenger cabin.

  Moreover, in the said embodiment, although the rudder angle change apparatus 26 which changes the rudder angle of the rudder 25 was provided in the electric motor chamber 2, the 1st and 2nd electric motor for propulsion was comprised so that rotation about a vertical axis was possible, and 1st Further, the course of the ship may be changed by rotating the second propulsion motor. In that case, the rudder and the rudder angle changing device can be eliminated to increase the degree of design freedom.

  Furthermore, in the said embodiment, although the three power generation engines 31-33 were provided in the engine room 3, it cannot be overemphasized that two or four or more power generation engines may be provided.

It is sectional drawing which looked at the rear part of the electric propulsion ship provided with the electric propulsion apparatus for ships which concerns on embodiment of this invention from the side. It is a block diagram which shows the structure of the electric propulsion apparatus for ships. It is a top view which shows schematic structure of each electric power generation engine from upper direction. It is a perspective view of each power generation engine installed on the common platform. It is a systematic diagram which shows the structure of the fuel system with respect to the diesel engine of each electric power generation engine. It is a circuit diagram of a generator panel and a power supply panel. It is a top view which shows schematic structure of each electric power generation engine concerning the modification of this embodiment from upper direction. It is a systematic diagram which shows the structure of the cooling water with respect to the diesel engine of each electric power generation engine.

Explanation of symbols

20 Marine Electric Propulsion Device 21 First Propeller (Propulsion Device)
22 Second propeller (propulsion device)
23 First propulsion motor (motor)
24 Second propulsion motor (motor)
31-33 1st-3rd power generation engine 34 Diesel engine (drive source)
34A Drive source group 35 Generator 35A Generator group 37 High elastic joint 39 Fuel supply path connection port 4 Switchboard 41 Generator panel 42, 43 Power supply panel 6 Cooler 71 Cooler side cooling water supply passage (cooling water system)
72 Cooler side cooling water discharge passage (cooling water system)
73 Cooler side cooling water supply path connection port 74 Cooler side cooling water discharge path connection port B2 Bolt D Common platform S1 Fuel supply path S2 Cooler side cooling water supply path (cooling water supply path)
S3 Cooler side cooling water discharge path (cooling water discharge path)

Claims (5)

In the marine electric propulsion device that feeds electricity generated by a plurality of generators so that the electricity is distributed to the motor by the switchboard, and the propulsion device is driven by the electric motor that is rotated by the fed electricity,
Said switchboard is separated and the generator plate for controlling the electricity generated respectively, an electric controlled by this generator board in the feeding plate for feeding as power distribution to the motor by the respective generators With
Each of the above generators and a drive source for individually driving these generators are connected in a separable manner so as to form a pair, thereby forming a plurality of power generation engines.
Each of the power generation engines is installed on the upper side of a single common base floor to which the generator side base floor to which the generator is fastened and the drive source side base floor to which the drive source is fastened is respectively fastened . The shipboard electric propulsion apparatus is characterized in that the generator panel is installed on an upper part of the generator side of each of the generator engines. In marine electric propulsion system according to 請 Motomeko 1,
Each generator engines are installed side by side parallel to one another the rotational axis of the respective generator, the generator plate is bridged so as to extend between said each generator which can produce the neighbors at the top of each of the generator side A marine electric propulsion device characterized by being provided. In marine electric propulsion system according to 請 Motomeko 1 or claim 2,
Each power generating engine, a generator group summarized plurality of said generators to one, detachably configured a drive source group summarized into one more of the drive source,
The above-mentioned generator group and the driving source group, and characterized in that it is connected by the said common platform above the floor each generator and the respective driving source is connected via a high elastic coupling individually A marine electric propulsion device. In marine electric propulsion system according to any one of 請 Motomeko 1 to claim 3,
Each driving source to the fuel system for supplying respectively the fuel, marine electric propulsion system, characterized in that it summarized as fuel supply line of the hull side to be connected via a single connection port. In marine electric propulsion system according to any one of 請 Motomeko 1 to claim 4,
Each generator engines is provided with a cooler, a cooling water system for each supply and discharge of cooling water to each of its cooler, the cooling water supply path of the hull and the cooling water discharge, respectively one connection port to route A marine electric propulsion device, characterized in that the electric propulsion devices are arranged so as to be connected via each other.

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