SU1576422A2 - Apparatus for controlling pressure of oil in reduction gear units of twin-shaft marine gas-turbine plant - Google Patents

Abstract

This invention relates to shipbuilding, in particular, to lubrication systems for ship gas turbine installations. The purpose of the invention is to save electricity and the life of electric pumps of a gas turbine installation. The device contains signaling devices 1 for disconnecting couplings 2, signaling devices 3 and indicators 4 for oil pressure in gearboxes 5, electric pumps 6 with starters 7, signaling devices 8 for rotation frequency of gas turbine engines 9, gears 10 for controlling oil pressure in gearboxes from logical elements 11 and OR 12 , signaling devices 13 of position of brakes 14 of shaft lines 15 and logic elements I 16. When the unit of the right side is working through the shaft line 15 to its propeller 17, the left side shaft line 15 is braked. In this case, the output signal from the brake position indicator 13 of the brake 14 of the left-side shaft 15 is removed from the first input of the AND 16 logic element, the resulting signal from the right-side unit 10 passes only to turn on the indicator 4, which signals the absence of oil pressure in the left-side reducer. The electric pump 6 on the left side is not included. 1 il.

Description

The invention relates to shipbuilding, in particular to the lubrication systems of ship gas turbines, and is an improvement on the author. St. No. 1299899.

The purpose of the invention is the saving of electricity and resource electric pumps gas turbine installation.

The drawing shows a structural diagram of a device.

The device contains signaling devices 1 of the position of the disconnecting couplings 2, signaling devices 3 and indicators 4 of the oil pressure in the gearboxes 5, electric oil pumps 6 with starters 7, signaling devices 8 of the rotational speed of the gas turbine engines 9, blocks 10 for monitoring the oil pressure in the gearboxes with logical elements AND 11 and OR 12, signaling devices 13 of the brake position 14 of the shaft shafts 15 and logical elements AND 16. In each block, the inputs of the elements AND are connected to the outputs of the signaling devices 8, 1 and 3 of the rotational speed of the gas turbine engine 9, the position of the isolation clutch 2 and the oil pressure in the gearbox 5 of the opposite side, respectively, and the outputs are connected to the inputs of the element OR 12, the output of which is connected to the indicator 4 of the oil pressure in the gearbox 5 and the first input of the logical element And 16, the second input of which is connected to the indicator 13 of the position of the brake 14 of the shaft shaft 15, and the output is with the starter 7 of the electric pump 6.

The device operates as follows.

The start of any gas turbine engine 9, for example, the starboard unit, and its connection with the help of the uncoupling clutch 2 to the gearbox 5 is carried out by the start-up and clutch engagement units (not shown) according to the operator’s signals.

When the gas turbine engine 9 enters the warm-up mode, the indicator 8 of the turbocompressor speed is triggered and gives a signal to the input of the logical element And 11 of the starboard unit 10.

After warming up, the gas turbine engine 9 is connected to the gearbox 5, the clutch 2 is turned on, the signaling device 1 of its position is activated and gives a signal to the input of the same logical element And 11 of the starboard unit 10. The starboard assembly through the shaft line 15 starts to work on its propeller 17. In this case, if the brake 14 of the shaft line 15 is not braked, the left side propeller 17 rotates and rotates the shaft line and gearbox of its side, the warning light 13 of the brake 14 is triggered and gives a signal to the first input logical element And 16. In the absence of oil pressure in the gearbox 5 of the port side, its oil pressure switch 3 generates an inverse signal to the inputs of the logical elements And 11 block 10 starboard. At the same time, a resultant signal is generated at the input of the AND gate 11 of the starboard unit 10, which is issued by the OR gate 12 of the starboard side 10 to turn on the indicator 4, which indicates the absence of oil pressure in the left side gearbox 5, and to the second input of the AND gate 16, the output of which is connected to the starter 7 of the electric oil pump 6 on the left side. After turning on the electric oil pump 6 and with sufficient oil pressure in the starboard gearbox 5, its oil pressure switch 3 is activated and removes inverse signals from the inputs of the logical elements AND 11 and OR 12 of the starboard unit 10. As a result, the control signal is turned off from the indicator 4 of the oil pressure · and from the second input of the logic element And 16. The indicator turns off, the starter 7 of the electric oil pump 6 after switching on is self-locking and the electric oil pump 6 continues to work.

If the starboard aggregate through the shaft line 15 is working on its propeller 17 and the shaft line 15 of the starboard assembly is inhibited, the output signal from the signal position indicator 13 of the brake 14 of the left shaft shaft 15 of the left side 15 is removed from the first input of the gate And 16 and the resulting signal from the block 10 of the starboard the bead passes only to turn on the indicator 4, signaling the absence of oil pressure in the gearbox on the left side. Left-hand electric oil 6 does not turn on.

When the starboard aggregate stops (disconnecting the disconnect clutch, cooling and stopping the gas turbine engine), the signaling switches 1 of the disconnect clutch 2 position and the turbocharger speed 8 are triggered, their output signals are removed from the inputs of the logical elements And 11 of the starboard logic unit 10 and the oil pressure control in the gearbox is turned off 5 aggregates of the left side.

Claims (1)

Claim A device for controlling the oil pressure in the gearboxes of a two-shaft ship gas turbine unit according to the author. St. No. 1299899, characterized in that, in order to save electricity and service life of electric pumps of a gas turbine installation, it is equipped with two signaling devices for the position of the brakes of shaft lines and two additional logic elements AND, and the inputs of each additional logic element AND are connected to the output of the corresponding oil pressure control unit in the gearbox and the output of the corresponding signaling device for the position of the brake of the shafting, and the output with the actuator of the corresponding electric pump.