SU1504162A1 - Control system for non-reversible marine diesel engine and its reversible drive - Google Patents

Abstract

The invention relates to shipbuilding, in particular, to automated control systems for ship non-reversible diesel engines and their reverse gears (RP). The purpose of the invention is to increase the efficiency of the system by reducing the time for carrying out the reversal maneuver at small and medium ship movements. The system contains a remote control post 1, logic elements NO 2 and 3 of the forward and backward circuits, logic elements OR 4-6, inverter 7, speed reference 8, speed reference switch 9, threshold relays 10.11, delay elements 12 , 13, the reverse sensor 14, the actuator 15 of the reverse, the actuator 16 changes the speed of rotation of the diesel. The input of the threshold relay 11 is given a signal from the inverter 7, and its output is connected to one of the inputs of the element OR 6, to another input of which a signal is sent from the reverse sensor 14. The output of the element OR 6 is connected to the inhibitory input of the logical element NO 3 "Back" , delay elements 12,13 are connected between the output of the speed reference switch 9 and the second inputs of the threshold relays 10, 11. 1 sludge.

Description

The invention relates to shipbuilding, in particular, to automated control systems for ship non-reversible diesel engines and their reverse gears (RP).

The aim of the invention is to increase the efficiency of the system by reducing the time required to perform the reversal maneuver on small and medium ship movements.

The drawing shows a schematic diagram of a control system for a ship's non-reversible diesel engine and its reverse transmission.

The system contains a remote post I control, logic elements NO 2 and 3 chains Forward and Back, logic elements OR 4 - 6, inverter 7, setpoint 8 speed, speed setting switch 9,: threshold relays 10.11, elements 12, 13 delays , reverse sensor 14, actuator 15. reverse, actuator 16 for changing the speed of rotation of a diesel engine.

Remote post; 1 control is used to convert the operator's action into commands for setting the direction of rotation Xg, Hz and the signal for setting the speed of rotation of the diesel Xsk. Remote post outputs

The 1 control is connected to the inputs of logical elements NO 2, 3 chains Forward and Back, as well as the speed setting switch 9.

Logic elements NO 2, 3 chains Forward and Back serve to block commands X and XцJ in the case of the presence of signals about the actual activation of the opposite direction of rotation. Element Outputs

2 and 3 are connected to the inputs of the logical element OR 4, as well as to the inputs of the actuator 15 of the reverse.

The output of the logic element OR 4 is connected to the input of the inverter 7. The output of the inverter 7 is connected to the first inputs of the threshold relays 10.11 and to the speed reference switch 9.

Speed dial 8 is for

generating a constant in magnitude RSC signal, setting the rotational speed of the diesel. The output of the setpoint 8 speed is connected to the input of the switch 9 set the speed.

Speed reference switch 9 is used to switch the diesel rotation speed reference from the remote control 1 X speed signal to the Rec signal from the setpoint adjuster.

8 speed and back, depending on the presence at its input of signals from the logic element OR 5 and from the inverter 7. The output of the speed reference 9 switch is connected to the input

actuator 16 changes the speed of rotation of the diesel, as well as with the inputs of the elements 12,13 delay.

The outputs of the elements 12,13 delay connected to the second inputs of the threshold relay 10,11. The output of the threshold relay 11 is connected to the input of the actuating device 15 of the reverse. Reverse sensor 14 serves for

generating signals and C, j about the actual direction of rotation of the diesel. The Cg output of the reverse sensor is connected to the OR OR 5.6 logic elements, and the SNS output is connected to another input of the OR 5 logical element and the NO 2 logical input of the logical element 2 of the Forward circuit.

The output of the logic element OR 5 is connected to the input of the speed setting switch 9.

The output of the threshold relay 10 is connected to another input of the logical element OR 6. The output of the logical element OR 6 is connected to the prohibiting input of the logical element NO 3 circuit Back.

The system works as follows.

For reversing from the forward stroke, the operator moves the handle (not shown) of the remote control station 1 to the reverse position. From the remote

five

the control station 1 disappears the command Xd and appears, which enters the logical element NO 3 but is blocked in it by the signal Cd, arriving through the logical element OR 6 from the reverse sensor 14. As a result, at the output of the element OR 4 there is no signal, which leads to the appearance at the output of the inverter 7 of the signal Y, that it is necessary to switch the reversing gear to the Neutral position.

The signal Wo (leads the speed setting switch 9 to the position, KOI- to the actuator 16 for changing the rotational speed of a diesel engine, the post-speed setting of the PCIC speed occurs, from the speed setting knob 8 (Ck - RS «) 11, energizes them and switches the relay 10.11 into operation.

If at the moment the threshold relays are put into operation, the level of the analog signal of the speed reference condition mode is 10.11. coming through the delay elements 12,13 to their second inputs will be higher than the relay trigger threshold and having a constant signal for setting the PC speed, then the output of the threshold relay 10 shows a signal that goes to the logic element OR 6 and prepares its switching . At the output of the threshold relay 11 signal will not.

After the previously occurring operation of the speed setting switch 9 causes a reduction in the speed setting signal level below the previously existing (before the beginning of the maneuver) level, elements 12.13 of delay will come into effect and the time will begin to count.

It is essential that delay element 12 is preset for a longer delay time than element 13. First, delay element 13 counts the set time, which triggers the threshold relay 11 to trigger. At its output, a signal Y is sent to the actuator 15 of the reverse . The reverse actuator 15 will shift the reverse gear to the Neutral position. As a result, the signal Cgf, at the output of the sensor 14 of the reverse will disappear. The switching of the logical element OR 6 will occur,

g 0

5 o

„

5 5

five

626

but the signal at its output is preserved, i.e. logical element NO 3 chains Back will still remain blocked. Element 12 delay will continue to countdown.

After the time delay is set by the delay element 12, the threshold relay 10 will be triggered. From its output, and hence from the output of the logic element 6, the signal will disappear. The logical element NO 3 circuits - Back is unlocked and passes the signal Yz to the actuator 15 of the reverse and to the input of the logical element OR 4.

The actuator 15 of the reverse will switch the switchgear to the back position, after which a signal is output at the output of the sensor 14 of the reverse. The Snz signal will pass through the logic element OR 5 and will go to the speed setting switch 9, which will allow the rotation speed command Hek from the remote control station 1 to the actuator 16 for changing the rotation speed of the diesel engine. Reversal complete.

In the event that reversal from the malps is performed, i.e. the signal level of the speed reference from the remote station 1 control is less than the signal level of the Rec from the setpoint of speed 8 and, accordingly, less than the threshold threshold threshold relay 10,11, the system will work similarly, but without timing elements 12,13 delay, m. the triggering of the threshold relays 10, 11 will occur immediately after the arrival of the Y signal from them, from the inverter in the specified sequence.

In the general case, threshold relays 10, 11 can receive at the second inputs through delay elements 12, 13 not a speed reference signal, but a signal about the actual speed of rotation of the diesel, for example, from a diesel speed sensor. The operation of the system in this case will be similar to that indicated.

Reversing from the reverse will be similar, except that the threshold relay

10 and the signal on his nhixone do not participate in B1 1ps: the iplieii of this maneuver, i.e. after triggered by

horn relay 11, the signal Y from its output will go to the input of the actuator 15 of the reverse, which will switch the RP to the Neutral position. After that, the output of the reverse sensor will disappear signal C, the logical element NO 2 circuit Forward unblocks and passes the signal of the CIP to the actuator 15 reverse . The end of the reversal will be similar.

It is possible to implement the system on automatic automation components: electronic, electrical, combined, etc.

Claims (1)

Invention Formula The control system of the ship non-reversible diesel engine and its reverse gear, comprising a remote control post, two logical elements, NO Forward and Forward circuits, the first and second RSHI logic elements, inverter, speed controller, speed reference switch, threshold relay, reverse sensor, reverse actuator and an actuator for varying the speed of rotation of a diesel engine, the outputs of the remote control station being connected to the inputs of two logical elements; there are NO Forward and Backward and with a switch The speed reference loop, the outputs of two logical elements are NOT circuits. Forward and Back are connected to the inputs of the first logical element OR and to the inputs of the actuator of the reverse, the output of the first logical element. 0 50 five 0 OR is connected to the input of the inverter, the output of the inverter is connected to the threshold relay and speed reference switching, the outputs of the reverse sensor are connected to the inputs of the second OR logic element, and the output of the reverse sensor corresponding to the Nvzad signal is connected to the inhibitory input of the logic element NO. Forward, the output of the second logic element OR is connected to the speed reference switch, the output of the speed reference switch is connected to the actuator for varying the speed of rotation of the diesel engine, characterized in that, in order to increase efficiency, it is supplied. on the second threshold relay, two delay elements and the third logical element OR, the input of the second threshold relay is connected to the output of the inverter, output of the second threshold relay is connected to one of the inputs of the third logical element OR, the other input of the third logical element OR is connected to the output of the reverse sensor corresponding to the Forward signal, while the output of the third logical element OR is connected to the inhibiting input of the logical element NO of the Back circuit, the inputs of the delay elements are connected to the output by switching It sets the speed, the output of one delay element is connected to the second input of the first threshold relay, and the output of the other delay element is connected to the second input of the second threshold relay.