JP4673268B2 - Ship power generation equipment - Google Patents

Description

  The present invention relates to a configuration of a power generation device of a ship having a navigation engine and a power generation device that supplies inboard power.

The marine vessel propulsion device is configured by an engine, a power transmission device, and the like, and drives a propeller connected to the power transmission device after the driving force of the engine is decelerated by the power transmission device. Then, a power generation device is installed between the engine and the power transmission device, and the power generation drive device is driven while driving the propeller with the engine output, and the output of the power generation device is supplied to the inboard power supply. This technique is also known.
JP 2003-81189 A JP 2003-81190 A

  In order to cool the conventional power generation device, it is necessary to install a pump and a cooling water circuit for taking in the cooling water if the cooling water is passed through the power generation device. This complicates the entire apparatus including the power generation equipment, increasing the number of parts and increasing the cost. If it is a configuration that allows cooling air to pass inside the power generation equipment, it is only necessary to provide a cooling fan and form a vent hole in the case of the power generation equipment. Becomes easy. However, it is difficult to distribute the cooling air throughout the generator, and there has been a problem that the cooling efficiency is lower than when the cooling water circuit is piped.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In claim 1, the inner surface of the case (31) of the generator (10) disposed on the power transmission path from the crankshaft (2a) of the engine (2) to the power transmission device (3) and the inner surface of the case (31) A cooling fan (23) that sends cooling air in a centrifugal direction between the power generation device (10) and the outer peripheral surface thereof, wherein the cooling fan (23) is used as a power transmission device (3) for the power generation device (10). A mounting flange (3b) that constitutes a case (31) of the power generation device (10) that covers the cooling fan (23) on the power transmission device (3) side is provided with one or a plurality of intake holes. And a mounting flange (3b) having a substantially domed shape on the side of the power transmission device (3). Formed and an opening (3e And a plurality of air holes (3d,...) Are formed in the peripheral part near the opening (3e), and the air holes (3d,...) Are in the form of elongated slits, and the openings (3e) A function of arranging the air in the vicinity of the cooling flange (23) closer to the inner periphery than the cooling fan (23); A guide member having a function of preventing backflow from the cooling fan (23) to the intake hole side is provided, and the guide member is constituted by a circular plate (30), and is provided on the inner surface side of the mounting flange (3b). The circular plate (30) is arranged so that the outer peripheral end of the circular plate (30) is in contact with the inner surface of the mounting flange (3b), and the opening (3e) of the mounting flange (3b) is provided at the center of the plate (30). Than A bolt hole formed in the mounting flange (3b) by forming a large opening (30a), and a mounting portion (30b) having an inverted L-shape in cross section from the inner end of the opening (30a). The circular plate (30) is fixed to the inner surface of the ventilation hole (3d) and is slightly closer to the inner peripheral side than the blade (23a) of the cooling fan (23). They are arranged concentrically on a substantially circumference and formed on a certain circumference in the rear view of the mounting flange (3b) .

According to a second aspect of the present invention, in the ship power generation device according to the first aspect, the guide member includes a rib (41) integrally formed with the mounting flange (3b), and a plate (a) that comes into contact with the rib (41). 35), and the rib (41) is formed on the inner surface of the mounting flange (3b) on the substantially circular circumference concentric with the input shaft (3a) of the cooling fan (23). Is provided so as to protrude forward, and the circular plate (35) is brought into contact with the end of the rib (41) .

ADVANTAGE OF THE INVENTION According to this invention, the air suction side and discharge side of a fan can be cut off substantially, the flow of cooling air can be made smooth, and the cooling efficiency of the apparatus for electric power generation can be improved.
In particular, effective air cooling is possible even in a sail drive or the like in which the power transmission device is large.

  Next, embodiments of the invention will be described.

  1 is a diagram showing a schematic configuration of a boat propulsion device, FIG. 2 is a side view showing a boat propulsion device configured as a sail drive, FIG. 3 is a side view showing a boat propulsion device configured as a marine gear, and FIG. It is side surface sectional drawing which shows the internal structure of the apparatus part for electric power generation of the propulsion apparatus of a ship.

  FIG. 5 is a front view of the power generating device, FIG. 6 is a front view showing the mounting position of the plate according to the present invention, FIG. 7 is a rear view showing the position of the vent holes, and FIG. FIG. 9 is a perspective view of the mounting flange, and FIG. 10 is a perspective view of the plate mounting structure.

  11 is a side sectional view showing the guide member according to the first embodiment, FIG. 12 is a side sectional view showing the guide member according to the second embodiment, FIG. 13 is a side sectional view showing the guide member according to the third embodiment, and FIG. These are the perspective views which show the rib which concerns on Example 3. FIG.

  A marine vessel propulsion apparatus according to the present invention will be described. A marine vessel propulsion device 1 shown in FIG. 1 has an engine 2 and a power transmission device 3, and a propeller 4 is connected to the power transmission device 3. The driving force from the engine 2 is transmitted to the propeller 4 while being decelerated by the power transmission device 3, and as a result, the propeller 4 is rotationally driven. Further, the engine 2 is provided with an alternator 5 driven by the engine 2, and the battery 6 is configured to store electric power generated by the alternator 5. Furthermore, in the propulsion device 1, a power generation device 10, which is a device having a generator and generator characteristics, is interposed between the engine 2 and the power transmission device 3. Then, the power generation device 10 is driven by the engine 2 so that the power generated by the power generation device 10 is supplied as ship power.

  As shown in FIG. 2, the propulsion device 1 has a sail drive in which the power transmission device 3 extends greatly below the engine 2 and the propeller 4 is directly attached to the power transmission device 3, or as shown in FIG. In addition, the marine gear can be configured in which the propeller shaft 4 a of the propeller 4 is attached to the rear end portion of the power transmission device 3. As described above, the propulsion device 1 in which the engine 2, the power generation device 10, and the power transmission device 3 are integrally configured is supported by a plurality of vibration isolation members 9 such as vibration isolation rubbers, and is installed on the hull of a ship. It has been.

  An engine for driving the power generation device 10 by interposing the power generation device 10 between the engine 2 and the power transmission device 3 and driving the power generation device 10 by the engine 2. The propulsion device 1 is more compact and space-saving compared to the case where the generator is separately provided or the generator driven by the engine 2 via a pulley or belt is separately provided at one end of the engine. As a result, it is possible to generate a larger amount of power than the alternator 5 and secure a sufficient supply of in-board power. Further, since the propulsion device 1 can be configured in a compact manner, installation on the hull is facilitated.

  Next, the configuration of the power generation device 10 will be described. As shown in FIG. 4, a flywheel 21 is attached to one end of the engine 2, and the flywheel 21 is rotationally driven by a crankshaft 2 a of the engine 2. The flywheel 21 is covered with a flywheel housing (hereinafter referred to as “FW housing”) 21 a.

  A power generation device center case 10a is integrally joined to the FW housing 21a, and the components of the power generation device 10 are built in the power generation device center case 10a. Specifically, the stator coil 11 is attached to the inner peripheral surface of the power generation equipment center case 10a, and the magnet rotor 12 is disposed inside (center side) the stator coil 11. The magnet rotor 12 is attached to the flywheel 21 and can rotate integrally with the flywheel 21.

  The mounting flange 3b of the power transmission device 3 can be mounted on the side of the power generation device center case 10a opposite to the FW housing 21a, and the power transmission device 3 can be mounted by mounting the mounting flange 3b on the power generation device center case 10a. Is fixed to the engine 2. As described above, the power generation device center case 10a, the FW housing 21a, and the mounting flange 3b integrally form a case 31 that covers the periphery of the power generation device. The power transmission device 3 is attached to the case 31 via the mounting flange 3b.

  The rotating shaft of the power generation device 10 is the crankshaft 2 a of the engine 2, and the crankshaft 2 a is disposed so that the shaft center coincides with the input shaft 3 a of the power transmission device 3. That is, the rotating shaft of the power generation device 10 is disposed concentrically with the crankshaft 2a and the input shaft 3a. When the mounting flange 3b is attached to the power generation equipment center case 10a, the input shaft 3a is connected to the flywheel 21 via the damper 22, and the input shaft 3a is rotationally driven by the crankshaft 2a.

  As shown in FIG. 8, the wiring 32 of the stator coil 11 is taken out from a hole 33 formed on the outer periphery of the case 31, and a wiring connecting member (not shown) such as a terminal block or a connector is used as the case 31. Located outside. That is, the wiring connection member is separated from the power generation device. The wiring connecting member includes a terminal block inside, and the wiring 32 taken out from the stator coil 11 is connected to the terminal block and divided in two directions, and is extended to the outside of the wiring connecting member.

  The cooling structure of the power generation device 10 will be described below. As shown in FIGS. 5 to 8, a cooling fan 23 and a plate 30 serving as a guide member for guiding air, which will be described later, are provided in the mounting flange 3b of the case 31 that covers the periphery of the power generation device, and the rear of the mounting flange 3b. A vent hole 3d serving as an intake hole is formed in the surface portion, and vent holes 10b and 10c serving as exhaust holes are formed in the power generation device center case 10a.

  Thereby, the cooling fan 23 that rotates as the engine 2 is driven takes in the cooling air from the air vent 3d into the power generation device 10 and passes the cooling air after cooling the magnet rotor 12 and the stator coil 11 and the like. The air can be discharged from the pores 10b and 10c to the outside, and the power generation device 10 using the drive of the engine 2 can be efficiently cooled. Further, since the cooling air is taken in from the non-engine side, the cooling air is hardly affected by the heat of the engine, and the cooling efficiency can be improved.

The cooling fan 23 is a centrifugal fan, and is configured such that blades 23a, 23a,... Are erected on the surface of the disk on the power transmission device 3 side. The blades 23a, 23a,... Of the cooling fan 23 are formed in a substantially L shape in a side view, and are arranged at equal intervals on the circumference centering on the input shaft 3a.
As shown in FIG. 9, the mounting flange 3b is formed in a substantially dome shape on the side of the power transmission device 3, and has a substantially octagonal opening 3e at the center, and an intake hole in the vicinity of the opening 3e. Ventilation holes 3d, 3d, and so on are formed. Further, as shown in FIGS. 10 and 11, the inner surface side of the mounting flange 3b is arranged so that the outer peripheral end of the circular plate 30 abuts the inner surface of the mounting flange 3b. A substantially octagonal opening 30a that is slightly larger than the opening 3e of the mounting flange 3b is formed in the part. Further, a mounting portion 30b having an inverted L shape in cross section is provided upright from the end of the opening 30a. Bolt holes 30c are formed in the mounting portion 30b, and are bolted to the inner surface of the mounting flange 3b using the bolt holes 30c. The vent holes 3d, 3d,... Are in the form of elongated slits and are arranged so as to be lined up in parallel in the vicinity of the substantially octagonal opening 3e (in this embodiment, a total of 12 vent holes 3d are provided). As shown in FIG. 6, the cooling fan 23 is concentrically arranged on a substantially circumference on the inner circumferential side slightly more than the blades 23a, 23a,. Further, as shown in FIG. 7, in order to avoid the position where the power transmission device 3 is disposed, the power transmission device 3 is formed on a certain circumference in the rear view of the mounting flange 3b. As shown in FIG. 8, a plurality of elongated slit-like vent holes 10b and 10c are formed on the outer peripheral portion of the power generation equipment center case 10a.

  As shown in FIGS. 5 and 6, the cooling air taken from the ventilation holes 3d, 3d,... Serving as the intake holes arranged slightly inside the cooling fan 23 is fixed to the inner surface of the mounting flange 3b. After hitting the plate-like portion of the plate 30 provided, it flows into the opening 30a, spreads to the outer peripheral side by the rotation of the cooling fan 23 (see FIG. 4), and is discharged laterally from the vent holes 10b and 10c. The The vent holes 10b and 10c are arranged on the outer periphery of the power generation equipment center case 10a, and a plurality of elongated slit-like vent holes 10b are arranged with the longitudinal direction being the front-rear direction. In addition, the elongated slit-shaped vent hole 10c has a longitudinal direction as a circumferential direction of the power generation device center case 10a, and exhaustion can be smoothly performed by such an arrangement.

  More specifically, when the cooling fan 23, which is a centrifugal fan, rotates, a negative pressure state occurs on the inner peripheral side of the cooling fan 23, that is, in the vicinity of the input shaft 3a. Therefore, the cooling air taken in from the air holes 3d, 3d,... Flows into the opening 30a that is in a negative pressure state after colliding with the plate-like portion of the plate 30, and is guided to the vicinity of the inner peripheral side of the cooling fan 23. Then, it passes between the cooling fan 23 and the plate 30, collides with the inner surface of the outer peripheral portion of the mounting flange 3 b, and is guided into the power generation device 10 along the inner surface. In other words, since the plate 30 serving as the guide member according to the present invention is provided, the flow path of the cooling air can be blocked, so that the sucked air does not flow back to the air holes 3d, 3d,. Thus, the cooling air can be efficiently guided and taken into the generator 10 on the discharge side. Then, the cooling wind spreads over the entire power generating device 10 to efficiently cool the inside of the power generating device 10 and efficiently from the plurality of vent holes 10b and 10c serving as discharge holes provided on the outer peripheral surface of the case 31. The air can be exhausted.

  As described above, the cooling air flows between the inner surface of the case 31 of the power generation device 10 disposed on the power transmission path from the crankshaft 2 a of the engine 2 to the power transmission device 3 and the outer peripheral surface of the power generation device 10. Is a case 31 of the power generation device 10 in which the fan 23 is provided on the power transmission device 3 side of the power generation device 10 and covers the fan 23 on the power transmission device 3 side. The mounting flange 3b is formed with one or a plurality of air holes 3d, 3d, and so on that are substantially concentric with the rotational axis of the fan 23, and the air holes that pass through the case 31. This is a guide member having a function of introducing air introduced from the air holes 3d, 3d,... Into the inner peripheral side from the fan 23 and a function of preventing a back flow from the fan 23 to the intake holes 3d, 3d,. Is provided with the rate 30, the the suction side of the air fan 23 and the discharge side substantially shredding, the flow of the cooling air is smoothly, thus enhancing the cooling efficiency of the power generation device 10. As a result, it is possible to prevent coil burning of the power generation device 10 and the like.

  Next, instead of the plate 30 that is the air guide member shown in the first embodiment as another embodiment, the rotating shaft (input shaft 3a) of the cooling fan 23 is provided on the inner surface of the mounting flange 3b as shown in FIG. The same effects as in the first embodiment can be obtained by configuring in the same manner as in the first embodiment except that the rib 40 having a predetermined width is provided on the substantially concentric circumference so as to protrude forward.

  That is, since the guide member is configured by the rib 40 integrally formed with the mounting flange 3b that is a case of the power generation device 10, the air suction side and the discharge side of the fan are substantially omitted as in the first embodiment. It is cut off, the flow of the cooling air is made smooth, and the cooling efficiency of the power generation device 10 can be increased. As a result, it is possible to prevent coil burning of the power generation device 10 and the like. Further, by using only the rib 40 having an integral structure as an air guide member, the number of parts is reduced, which is economical.

  Next, instead of the guide member shown in Example 1 or Example 2 as another embodiment, the rotating shaft (input shaft 3a) of the cooling fan 23 is provided on the inner surface of the mounting flange 3b as shown in FIGS. A rib 41 having a predetermined width is provided on a substantially concentric circumference so as to protrude forward, and a circular plate 35 is brought into contact with an end of the rib 41. Further, as in the first embodiment, the outer peripheral end portion of the plate is not in contact with the inner surface of the mounting flange 3b, but is configured in the same manner as in the first embodiment except that it has a gap with a predetermined width. It is possible to obtain the same effect as in the first embodiment.

  That is, the guide member is constituted by the rib 41 integrally formed on the mounting flange 3b which is a case of the power generation device 10, and the plate 35 brought into contact with the rib 41. 2, the air suction side and the discharge side of the fan are substantially cut off, the flow of the cooling air can be made smooth, and the cooling efficiency of the power generation device 10 can be increased. As a result, it is possible to prevent coil burning of the power generation device 10 and the like.

  Further, in the present embodiment, the power transmission device 3 is configured by a sail drive type, but is not particularly limited to a sail drive type. However, in the sail drive type, for example, the power transmission device is larger than the marine gear type, and the shaft center part at the rear of the engine is greatly blocked. For this reason, it is difficult to provide the air intake hole in the vicinity of the center portion, and the air intake hole must be provided considerably outside the axial center portion. Therefore, by applying the present invention, that is, by providing a plate or the like serving as a cooling air guide member on the inner surface of the mounting flange 3b, the air sucked from the outside is once directed to the axial center (inner peripheral side from the fan 23). Then, it is possible to realize the double effect that the cooling air can be sent in the centrifugal direction from the shaft center portion and the backflow of the cooling air to the intake hole 3d is prevented.

  In this embodiment, twelve vent holes 3d for intake and ten vent holes 10b and 10c for exhaust are provided. However, the number of vent holes is not particularly limited.

The figure which shows schematic structure of the propulsion apparatus of a ship. The side view which shows the propulsion apparatus of the ship comprised by the sail drive. The side view which shows the propulsion apparatus of the ship comprised in the marine gear. Side surface sectional drawing which shows the internal structure of the apparatus part for electric power generation of the propulsion apparatus of a ship. The front view of the apparatus for electric power generation. The front view which shows the attachment position of the plate which concerns on this invention. The rear view which shows the position of a vent hole. The side view which shows the intake and exhaust of the cooling air of the apparatus for electric power generation. The perspective view of a mounting flange. The perspective view which shows the attachment structure of a plate. FIG. 3 is a side cross-sectional view illustrating the guide member according to the first embodiment. FIG. 6 is a side sectional view showing a guide member according to Embodiment 2. FIG. 6 is a side cross-sectional view illustrating a guide member according to a third embodiment. FIG. 10 is a perspective view showing a rib according to the third embodiment.

2 Engine 2a Crankshaft 3 Power transmission device 3a Input shaft 3b Mounting flange 3d Ventilation hole 10 Power generation equipment 10a Power generation equipment center case 23 Cooling fan 30/35 Plate 31 Case 40/41 Rib

Claims (2)

The inner surface of the case (31) of the power generation device (10) arranged on the power transmission path from the crankshaft (2a) of the engine (2) to the power transmission device (3) and the power generation device (10) A cooling fan (23) for sending cooling air in a centrifugal direction between the outer peripheral surface of the power generation device (10) and the cooling fan (23) is provided on the power transmission device (3) side of the power generation device (10), A ventilation hole (3d) serving as a single or a plurality of intake holes is provided in the mounting flange (3b) constituting the case (31) of the power generation device (10) that covers the cooling fan (23) on the power transmission device (3) side. Are formed on the substantially circumference concentric with the rotating shaft of the cooling fan (23), and the mounting flange (3b) is formed in a substantially dome shape on the power transmission device (3) side, An opening (3e) is provided, and the opening ( e) A plurality of air holes (3d,...) are formed in the vicinity of the vicinity, and the air holes (3d,...) have an elongated slit shape, and a pair of substantially parallel holes are formed in the vicinity of the opening (3e). And a function of introducing the air introduced from the vent hole (3d) into the mounting flange (3b) to the inner peripheral side from the cooling fan (23), and from the cooling fan (23) A guide member having a function of preventing backflow to the intake hole side is provided, and the guide member is constituted by a circular plate (30), and the circular plate (30 is provided on the inner surface side of the mounting flange (3b). ) Is disposed so that the outer peripheral end of the mounting flange (3b) contacts the inner surface of the mounting flange (3b), and the opening (3e) is slightly larger than the opening (3e) of the mounting flange (3b) at the center of the plate (30). 30 ), And a mounting portion (30b) having an inverted L-shape in cross section is erected from the inner end of the opening (30a), and a bolt is inserted into a bolt hole (30c) drilled in the mounting flange (3b). The circular plate (30) is arranged on the inner surface side of the vent hole (3d...) Approximately on the inner circumference side slightly from the blade (23a...) Of the cooling fan (23). A power generating device for a ship, which is concentrically arranged and formed on a certain circumference in a rear view of the mounting flange (3b) . 2. The ship power generation device according to claim 1, wherein the guide member includes a rib (41) formed integrally with the mounting flange (3b) and a plate (35) that comes into contact with the rib (41). The rib (41) protrudes forward on the inner surface of the mounting flange (3b) on the inner surface of the mounting fan (3b) on a substantially circumference concentric with the input shaft (3a) of the cooling fan (23). And the circular plate (35) is brought into contact with the end of the rib (41) .

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