JPS5940647Y2 - power generator - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to a power generation device installed on a ship.

In general, when a ship is navigating along the coast or open ocean without obstacles, the main engine is operated at the most economical predetermined rated rotation (output), and when entering or exiting a port, passing through a strait, etc. In some cases, the revs are raised or lowered within a low rev range depending on the situation, thereby compromising safe operation.

The ratio between operating the main engine at an economical predetermined rated speed and sailing at a higher speed, and sailing at a lower speed by increasing and lowering the rotation within a low rotation range varies depending on the type of ship. In normal ships, the former (rated rotation) is more than 80% and the latter less than 20%, and even in fishing boats, the former is less than 50%.
-60% or more, and the latter is usually 50-40% or less.

In addition, in ordinary ships, the main engine is rarely rotated at a speed higher than the rated rotation speed, ignoring economic efficiency.

By the way, when sailing on the open ocean, the main engine is operated at a constant rated speed with no vertical fluctuations, but when sailing at a reduced speed, variable pitch propeller ships operate the main engine at a constant speed. In this state, the speed is reduced by operating the variable pitch propeller, and in fixed pitch propeller ships, the rotation speed of the main engine is reduced.

Therefore, in the case of a fixed pitch propeller ship, when the input shaft of the generator is connected to the output shaft of the main engine, if the rotation speed of the d1 main engine changes, the rotation speed of the generator changes accordingly, and the power generation frequency increases. Change.

Therefore, a constant rotation device equipped with a slipping clutch is installed between the main engine and the generator, so that a constant generator input rotation speed can be obtained regardless of the rotation speed of the main engine. However, depending on the operating conditions, There was a complaint that a relatively large sliding loss (frictional heat loss) occurred.

The present invention has been developed in view of the above, and the clutches of two types of transmission mechanisms installed in parallel between the main engine and the generator are linked to the rotational speed of the main engine by operating a speed control handle. can be switched automatically and uninterrupted, and
The object of the present invention is to provide a power generation device in which slip loss is significantly reduced.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

The accompanying drawing is a block diagram showing an embodiment of the power generation device according to the present invention, and reference numeral 1 indicates a drive engine (main engine).

This drive engine 1 is equipped with a speed control handle (governor handle) 2, and the handle 2 is moved to the left K in the figure with a pivot 3 as the center.
47, the fuel pump I is moved via the governor spring 4 and transmission means such as the link 5 and bell crank 6, and the rotational speed is lowered, and when the handle 2 is tilted to the right, the rotational speed decreases. It's starting to increase.

A fixed pitch propeller 9 is attached to one end of the output shaft 8 of the drive engine 1.
is provided, and the other end is provided with a first transmission mechanism A arranged in parallel, which will be described later.
A generator 10 is connected via a second transmission mechanism B.

From the above-mentioned first transmission mechanism Ad, the clutch device 11, the gear 13 coupled to the output shaft 12 of this clutch device 11, and the gear 14 meshed with this gear 13, the precepts 1. A rotary cylinder 15 on the input side of a clutch device 11 is coupled to the output shaft 8 of the drive engine 1, and a gear 14 is coupled to the input shaft 16 of the generator 10.

Here, the clutch device 11 includes clutch plates 17 and 18 provided on the output shaft 12 and the rotary cylinder 15, respectively, so as to be movable in the axial direction while rotation in the circumferential direction is restricted. When the normally open pulp 21 of the hydraulic circuit 20 is opened and hydraulic oil is sent from a hydraulic pump (not shown) through the hydraulic circuit 20, the pressing piston 19 presses the clutch plates 1γ and 18 to press them against each other,
The structure is such that the rotation of the rotating drum 15 is transmitted to the output shaft 12 by turning the "off" state into "on".

l, second transmission mechanism B'd, hydraulic multi-plate constant rotation device 22
, a gear 24 connected to the input shaft 23 of the constant rotation device 22, and a gear 25 meshed with the gear 24. 26 is coupled together with the gear 14, and the gear 25 is connected to the output shaft 8 of the drive engine 1.
The rotary cylinder 15 is connected together with the rotary cylinder 15 of the first rotary cylinder 15.

The hydraulic multi-plate constant rotation device 22 allows the input shaft 23 to move freely in the axial direction while the rotation in the circumferential direction is restricted.
and a clutch plate 27.2 provided on the rotating body 26, respectively.
8 and these clutch plates 2γ.

A normally closed valve 32 is installed in a hydraulic circuit 31 which is connected to the rotary cylinder 26 through the valve 30, and a centrifugal force control valve 30. When released, the pressure piston 29 is pressed against the clutch plate 2γ by the hydraulic oil sent from the hydraulic pump.
, 28 to transmit the rotation of the input shaft 23 to the rotary cylinder 26, the rotational speed of the input shaft 230 increases, and as the rotation of the rotary cylinder 26 increases accordingly, the centrifugal force is suppressed. The pulp 30 works under the action of centrifugal force, and the amount of hydraulic oil released increases, and the clutch plates 27 and 28 by the pressing piston 29
As a result, the contact force of the rotary cylinder 2 decreases and its slip ratio increases.
6 is kept constant, and conversely, the input shaft 23
When the rotational speed of the clutch plates 2γ and 28 decreases, and the rotation of the rotating barrel 26 decreases accordingly, the amount of hydraulic fluid released by the centrifugal force control valve 30 decreases, and the slip ratio of the clutch plates 2γ and 28 decreases. In this case as well, when the rotation of the rotating barrel 26 is kept constant and the normally closed pulp 32 is closed to cut off the flow of hydraulic oil, the pressing force of the pressing piston 29 is completely lost and the gap between the clutch plates 27 and 28 is It is constructed so that frictional resistance is eliminated and power transmission is zero.

On the other hand, for speed control of the drive engine 1, the clutch device 11 of the first transmission mechanism A and the hydraulic multi-plate constant rotation device 22 of the second transmission mechanism B are used to control the speed of the drive engine 1. A switching mechanism 33 is provided that selectively operates depending on the speed.

This switching mechanism 33 includes a micro switch or a proximity switch that individually opens and closes the normally open valve 21 and the normally closed valve 32 provided in the hydraulic circuit 20.31, the normally open pulp 21 and the normally closed pulp 32, Alternatively, it consists of a second control means 35 such as a phototube device, a first control means 34, and an operating body 36 that is moved in conjunction with the speed control handle 2. When the rotational speed is switched from the most frequently used high speed range to the next most frequently used low speed range (including the medium speed range), the actuating body 36 moves to the right in the figure, first controlling the first control means 34, then the second control means 34. Control means 35
They are made to act in this order to open the normally closed valve 32 and close the normally open pulp 21.

37 is a well-known governor weight.

Next, the operation of the power generating apparatus according to the present invention configured as described above will be explained.

The figure shows a state in which the drive engine 1 is operated at the most frequently used high speed (rated) rotation, which is a cruising state in a ship, and the actuating body 36 is separated from the control means 34,35.
The normally closed valve 32 is closed and the hydraulic multi-plate constant rotation device 22
is in the "off" state, and the normally open valve 21 is opened and in the "on" state.

Therefore, the generator 10 controls the rotation of the drive engine 1 by the output shaft 8, the clutch device 11' gear 13, 14, and the input shaft 16.
It is receiving and rotating through the.

In this case, since the clutch is directly connected, so to speak, there is no loss due to slippage.

Speed control from the above state for the purpose of operation etc. When turning the handle 2 to the left and operating the drive engine 1 at the low speed rotation that is often used, the rotation speed of the drive engine 1 can be controlled by rotating the handle 2 to the left. , the actuating body 36 acts on the control means 34, 35 to open the normally closed valve 32 and close the normally open valve 21, so that the hydraulic multi-disc constant rotation device 22 causes the "Person 1 clutch device 11 to disconnect". It becomes 1.

As a result, the rotation of the drive engine 1 is caused by the rotation of the output shaft 8, the gear 25,
24, the constant rotation device 22, and the input shaft 16 to be transmitted to the generator 10.

As already mentioned, in this operating state VC&, the centrifugal force control valve 30 incorporated in the constant rotation device 22 acts to rotate the generator 10 at a constant speed regardless of speed fluctuations of the drive engine 1. I'll let it pass.

By the way, in the diagram, the clutch device 11 and the constant rotation device 22 are temporarily in a state where the actuating body 36 causes the second control device 35 to act after the first control device 34 acts. At the same time, it is in the "on" state, but since the constant rotation device 22 side is a slipping clutch, there is no marking.

The clutch device 11 can also be replaced with an electromagnetic clutch or the like.

Although the tooth ratios of the gears 13, 14, 24, and 25 are determined in consideration of the performance of the drive engine 1 and the generator 10, it is possible to replace them with other transmission members.

Furthermore, in the diagram, the input shaft 1 of the generator 10
6 to the output shaft 12 side of the clutch device 11, the output shaft 8 of the drive engine 1 can be connected to the constant rotation device 220 input shaft 23.
It can also be connected to the side.

When switching from low-speed rotation to high-speed rotation by operating the speed control handle 2, the case is not the case described, but the reverse of the above.

As explained above, according to the present invention, by operating the speed control handle 2 of the drive engine 1, the drive engine 1 and the generator
Two types of transmission mechanisms A and B provided in parallel with each other between 0 and 0
The clutch can be switched automatically and uninterruptedly in accordance with the rotational speed of the drive engine 1.

Moreover, since the structure is such that the clutch device 11 without slipping operates in the rated rotational speed range most frequently used to transmit the rotation of the drive engine 1 to the generator 10, slip loss can be significantly reduced.

[Brief explanation of the drawing]

The drawing is a block diagram showing one embodiment of the power generation device according to the present invention.

Claims (1)

[Scope of utility model registration request] Between the drive engine and the generator with a speed control handle,
A first transmission mechanism includes a clutch device and transmits the rotation of the drive engine to the generator, and is configured such that when the rotational speed of the output shaft increases, the slip ratio of the clutch plate is increased by the action of centrifugal force control pulp. A second transmission mechanism including a hydraulic multi-plate constant rotation device and transmitting the rotation of the driving engine to the generator is installed in parallel, and the speed control handle is connected to a clutch device of the first transmission mechanism and a hydraulic pressure of the second transmission mechanism. A power generating device comprising a switching mechanism for selectively operating a multi-plate constant rotation device in relation to the rotational speed of the drive engine.