JPS6136557A - Parallel operating device for shaft generator - Google Patents

Abstract

PURPOSE:To conduct parallel operation of a generator by providing gear devices for transmitting rotation of shafts of two separate and independent propulsion devices and coupling both devices, and interposting a clutch mechanism having a lock-up device between the gear devices, thereby to mechanically connect rotation of both shafts. CONSTITUTION:Main engines 1, 2 are adapted to drive propellers 3, 4 through shafts 10, 11 and thrust forward a ship. The main engine 1 is adapted to drive a shaft generator 5 through shafts 12, 14, and the main engine 2 is adapted to drive a shaft generator 6 through shafts 13, 15. Both shafts are provided with coupling gear devices 7, 8, so that rotation of the shafts is transmitted to a clutch 9 through shafts 16, 17. The clutch 9 is a lock-up mechanism, whereby even if both shafts are subjected to individual disturbance torque by the propellers, synchronization of both generators can be reliably expected.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to ships (including self-propelled work boats, etc.) having a propulsion device that drives two or more propeller shafts using two or more main engines. , two alternating current generators connected to and driven by two separate shafts (hereinafter referred to as "shaft generators")
This invention relates to a device that mechanically couples the rotations of both shafts to maintain synchronization and enables parallel operation of shaft generators.

[Conventional technology and problems] Even on ships, because it has features such as simplified equipment,
Electrical equipment is assumed to be AC, and the generator is also an AC generator (synchronous I!
A1! i aircraft) is normally equipped.

In addition, in order to eliminate the need for a prime mover and reduce fuel consumption, a generator is connected to the shaft of the main propulsion engine that rotates the propeller. , it is used to propel the ship and provide onboard power at the same time.

In addition, ships that must survive independently in a harsh environment usually have two or more power generation system systems in case the power generation system system fails.

In order to meet the above needs, for ships equipped with two or more main engines and propulsion shafts, it is necessary to provide synchronous power generation for each shaft. ! Ideally, it would be equipped with an alternating current generator combined with a machine.

However, in order to operate two or more synchronous generators in parallel,
+i+ It is necessary to satisfy three conditions: the magnitude of the electromotive force of each machine is the same, (2) the frequency of each machine is the same, and (3) the phase of the electromotive force of each machine is the same.

However, in a ship's shaft generator, irregular torque fluctuations are transmitted from the propeller, so it is difficult to completely match the phases of the two generators, and the synchronization effect by electrical cross current is difficult. The disturbance is too large to expect
Furthermore, parallel operation using two or more shaft generators has conventionally been considered impossible due to disadvantages such as electrical loss.

[Object of the Invention] Therefore, the object of the present invention is to synchronize the generators by mechanically coupling the rotations of the shafts equipped with shaft generators in a ship having two or more propulsion shafts. The objective is to realize a device that can perform parallel operations. - [Structure of the invention] In order to achieve this purpose, this invention consists of two separate and independent
In a parallel operation device for two shaft generators connected to the shafts of a set of propulsion devices, a gear device is provided to transmit and connect the rotation of both shafts, and a clutch mechanism having a lock-up device is interposed between the gear devices. It is characterized by mechanically coupling the rotations of both axes.

[Function] Since the present invention has the above configuration, two
When trying to operate the original shaft generator in parallel, for example,
By adjusting the output of each main engine so that each shaft has the same rotation speed, and electrically connecting a regenerator, the synchronization effect of the cross current will cause the phases to match, so the frequency and phase will be completely matched. If the clutch is connected and locked up when the two shafts match, the rotations of both shafts will be mechanically coupled, and the rotation speed and phase will be completely the same, so even if a disturbance is applied to one shaft, the rotation of the other shaft will be completely the same. The rotational speed is transmitted to the shaft of the engine via a gear system and clutch, and the rotational speed and phase remain consistent.

To cancel parallel operation, remove the lock and apply the clutch to 1illl JM, the mechanical connection between both shafts will be removed and each shaft can rotate without being restrained by the other shafts.
Parallel operation of the shaft generator can be canceled.

[Example] The present invention will be described below with reference to the illustrated embodiments.

Figure 1 shows a two-engine, two-shaft boat equipped with a shaft generator on each shaft, and according to the present invention, the rotation of the two shafts is mechanically coupled to operate the two shaft generators in parallel. Showing a diagram of the system configuration,
The main engine 1.2 is connected to the propeller 3.2 via the shaft 10°11.
The main engine 1 drives the shaft 12 and propels the ship.
．． 14 to the shaft generator 5, and the main engine 2 to the shaft 13
．． The shaft generator 6 is driven via the shaft generator 15.

Both shafts are equipped with coupling gearing 7, 8, the shaft 16.
17, the rotation is transmitted to the clutch 9. When the rotation directions of both shafts are opposite, an idler is inserted into one gear device, and the clutch 9 has the same rotation speed, the same rotation direction, and the same rotation direction. Transmit in phase. This clutch 9
By fitting and disengaging the two shafts, the rotations of both shafts are coupled and separated, and the shaft generator can be operated in parallel or not.

Examples of the clutch 9 are shown in FIGS. 2 to 4.

Figure 2 is a vertical cross-sectional view of the clutch in its engaged state, Figure 3 is a cross-sectional view taken along the line - m in Figure 2, and Figure 4 is a disengaged state of the clutch. 21 and 31 are fixed to shafts 17 and 16, respectively, and the friction surfaces 21a and 31a of both clutch bodies face each other.Both clutch bodies have a plurality of cylinders (four cylinders each in the figure) symmetrical to the center axis. 22 and 32 are bored, and a long piston 23 is fitted into the cylinder 22 of one clutch body, and a short piston 33 is fitted into the cylinder 32 of the other clutch body. Each cylinder is provided with hydraulic oil holes 24, 34, 25, and 35.

Next, the effect will be explained. When starting parallel operation, the main engine 1.2 is operated and the generator 5.6 is driven. Does it start when the rotation speed of main engine 1.2 is adjusted to illumination and the rotation speed matches? I! The machines 5 and 6 are electrically coupled. Then, Ryozen? ! ! If there is a phase difference between the machines, a cross flow will occur, and the synchronization action will generate an electrical synchronization force. After synchronization, the main body of clutch 9 21.31
is moved in the axial direction by a fitting/unfitting device (not shown) (for example, a device that moves the outer shaft fitted with a spline in the axial direction with respect to the inner sleeve), and the friction surfaces 21a and 31a are brought into contact with each other. When the machine is completely synchronized, the clutch cylinders 22 and 32 are configured to face each other and be on the same axis, so after confirming this, 2.
"R Apply hydraulic pressure to the cylinder 22, push out the long piston 23, and fit it into the mating cylinder 32. As a result, the connection of the coupling is locked up, and disturbance torque from the propeller etc. is applied. However, since both shafts are mechanically connected, the synchronization of the regenerator will not be lost. ゛When stopping parallel operation and trying to generate electricity with only one shaft generator, the hydraulic oil of clutch 9 Hydraulic pressure is applied to the cylinder 32 through the holes 34 and 35 to push the long piston 23 back toward the cylinder 22 through the short piston 33, and then
Both clutch bodies 2 are connected by a clutch engagement/disassembly device (not shown).
1.31 to leave. This eliminates the mechanical connection between the two shafts, allowing each machine to operate freely.

Note that the clutch mechanism and lock mechanism are not limited to this embodiment, and of course, known mechanisms can be used.

[Effects of the Invention] As explained in detail above, according to the present invention, in two shaft-driven engines each driven by two main engines, the rotation of both shafts is mechanically controlled by a clutch. Since they can be coupled and separated, even if both shafts receive different disturbance torques from propellers, etc., the regenerator can be reliably synchronized.

This makes it possible, for example, to operate shaft generators installed on each shaft of a two-engine, two-shaft ship in parallel.

[Brief explanation of drawings]

Fig. 1 is a configuration explanatory diagram of an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of an embodiment of the clutch, Fig. 3 is a cross-sectional view taken along mm-m of Fig. 2, and Fig. 4 is a longitudinal cross-section when the clutch is disengaged. It is a front view. In the figure, 1.2 is the main engine, 3.4 is the propeller, and 5.
6 is a shaft generator, 7.8 is a connecting gear device, 9 is a clutch,
10 to 17 are shafts, 21.31 are clutch bodies, 21i
31a is a friction surface, 22° 32 is a hydraulic cylinder, 23 is a long piston, 33 is a short piston, 24, 25.34.35
is the hydraulic oil hole.

Claims (1)

[Claims] In a parallel operation system for two shaft generators connected to the shafts of two separate sets of propulsion devices, a gear device is provided to transmit and connect the rotation of both shafts, and a lock-up device is installed between the gear devices. What is claimed is: 1. A shaft generator parallel operation device characterized in that the rotations of both shafts are mechanically coupled by interposing a clutch mechanism having the shaft generator.