JPS60545B2 - How to disconnect the coupler of a multi-engine single-shaft propulsion engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-machine one-propulsion engine, particularly a multi-machine one-propulsion engine which is provided with a plurality of main engines and is combined so that any one of the engines can be detached from the propulsion system. This relates to a method of operating a propulsion engine coupler detachment.

When the engine is removed from the multi-machine single-shaft propulsion system, the engine speed and load will temporarily fluctuate.

When this variation is controlled by the speed governor of the engine, the speed governor operates after detecting the rotation speed fluctuation, so the rotation speed deviation at this time increases in proportion to the amount of load fluctuation. This increase is particularly large when the main engine is disengaged from a propulsion system operating under high load.

Occasionally, the load on the breakaway main engine may decrease rapidly and it may shut down due to an overspeed trip.
- The present invention examines the load characteristics at the time of disengagement of a multi-machine one-touch propulsion engine whose rotation speed is controlled by a speed governor, and determines the set rotation speed of the speed governor of the primary engine from which the rotation speed N is to be disengaged. Temporary rotational speed deviation △N immediately after starting operation
On the other hand, the set rotation speed of the governor of the main engine that does not disengage is immediately reduced by a temporary rotation speed deviation △ immediately after starting the disengagement operation.
It has been found that the purpose of skillfully controlling the rotational speed can be achieved by increasing the rotational speed by N or ΔN' and instantaneously returning to the original set rotational speed N upon completion of the disengaging operation.

This will be explained in detail below. Figure 1 shows the koji generator 5.
Main engine 4A, 4B that connects A, 5B, 5C respectively
, 4C, and has a propulsion propeller 1 with a single axis la.

2 is Mari la to the king engine 4A, 4B, 4C, coupling machine 3A,
These are gears that are connected via 3B and 3C.

7 is a coupling machine bale entry/exit signal transmitter; 8A is a time delay timer interposed in the line connecting transmitter 7 and coupling machines 3A, 3B, and 3C individually; 9 is a signal from transmitter 7; A transmitter 8B is a transmitter 9 for generating a ±△N signal to give a rotation speed deviation of 10△N to the rotation speed setting N of the main engines 4A, 4B, and 4C based on the occurrence of the occurrence. Main engine speed governor 6A
, 6B, and 6C are interposed in the lines that connect them individually.

Next, a control method by the above-mentioned apparatus will be explained with reference to FIG. 2, which shows rotational speed fluctuations and load fluctuations with time progressing in the right direction of the drawing.

The set rotation speed of all three main engines is governor 6A, 6B, 6C
When the main engine 4A is to be separated from the propulsion system, the transmitter 7 issues a signal to separate the coupler 3A.

T. by timer 8A. Separation of the coupler 3A begins after a second, and as shown by curve Z, the transmission torque of the coupler 3A decreases, and the detachment is completed after another T2 seconds have elapsed. on the other hand,
The △N signal generated from the ±△N signal transmitter 9 is delayed by the timer 8B, and after the signal is emitted from the transmitter 7,
After T3 seconds, the rotation speed setting of the speed governor 6A with the speed setting N is set to N-△N, and conversely, the speed setting of the speed governor 6B, 6 with the speed setting N is set to N-△N.
Let the rotation speed setting of C be N+△N.

With this setting, the output signals of governors 6A, 6B, and 6C are
They change as shown by curves P, Q, and R, respectively. Curves A, B, and C show how the rotational speed of the main engine changes after the rotational speed is set to the governors 6A, 6B, and 6C as described above.

As shown in curve A, the rotation speed of the main engine 4A, whose speed governor is set to N-△N, decreases slightly after setting.
It's not rising.

-Depending on the value of △N, the rotation speed may increase somewhat, but the large fluctuation in the upward direction of the rotation speed as shown by the conventional dotted line indicating the degree of increase will never occur; By selecting an appropriate value, it is possible to stabilize the curve A after slightly fluctuating in the downward direction, as shown by the solid line of curve A. On the other hand, the rotation speeds of the main engines 4B and 4C that are not separated fluctuate slightly in the upward direction, as shown by curves B and C, and never significantly decrease in the downward direction as shown by the conventional broken line. It won't happen.

After the withdrawal is completed, "As shown in the figure," L+L seconds after the signal is issued from the transmitter 7, the rotation speed settings of the speed governors 6A, 6B, and 6C of all engines are returned to the original N, and the master of the withdrawal completion is activated. The engine 4A, as shown by curve A, slightly increases and returns to its original rotation speed N', and the main engines 48 and 4C, which are not separated, slightly decrease and return to their original speed, as shown by curves B and C. number N'
You can go back. According to the present invention, even if the main engine 4A is driving the catalytic generator 5A from the start of disengagement to the completion of disengagement, fluctuations in the rotation speed during disengagement can be minimized, and even after disengagement is completed, the rotation speed remains constant instantaneously. It can be held constant to a number.

Therefore, the output of the catalytic generator can be kept constant. Based on the above-mentioned characteristics of a multi-machine single propulsion system, the present invention achieves the objective by simply setting a minute rotational speed deviation of ±△N to the speed governor at the time of disengagement. There are effects that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a layout configuration diagram of a device according to a first embodiment of the present invention, and FIG.
The figure is a graph. 1...Propulsion propeller, la...shaft, 2...gear, 3A,
3B, 3C...Connector, 4A, 4B, 4C...
・... Main engine, 5A, 58, 5C... Catalyst generator, 6A, 6
B, 6C...Governor, 7...Coupler iron on/off transmitter, 8a, 8b...Timer 9...
...Sat△N signal transmitter. 7. Office work 2

Claims (1)

[Claims] 1. In a multi-engine single-shaft propulsion engine that is equipped with a plurality of main engines that are combined so that any one of them can be separated from the propulsion system, the set rotation speed of the governor of the main engine that is about to be separated from the propulsion system. , the set rotation speed of the governor of the main engine that does not disengage is instantly decreased by the temporary rotation speed deviation ΔN or ΔN′ immediately after the disengagement operation starts, and the set rotation speed of the governor of the main engine that does not disengage is instantly increased by the temporary rotation speed deviation ΔN or ΔN′ immediately after the disengagement operation starts. A method for disengaging a coupler of a multi-shaft propulsion engine, characterized in that the rotation speed is returned to the original set rotation speed N instantaneously upon completion of the disengagement operation.