SU1321845A1 - Turbomachine oil supply system - Google Patents

Abstract

The invention relates to the field of energy and can be used in oil supply systems for turbomachines. The aim of the invention is to increase the reliability by setting the optimum oil flow through the overflow pipe. For this purpose, a measuring device and a hydraulic lock are installed on the drain pipe 8. The hydraulic lock is made in the form of two chambers 17 and 18 interconnected by a pipe 19. The lower section 22 of the pipe 19 is located below the overflow drain 15 from the lower chamber 18. The upper parts of the chambers 17 and 18 are connected by a pipeline 20 for air exhaust to the air space of the damper tank. With a large overflow, the size of the throttle diaphragm is determined by the differential pressure meter 16, and air is led through the pipeline 20 to the air space of the damper tank. 1 hp f-ly, 2 ill. sl co y oo 4; | SL 1rig 2

Description

The invention relates to power engineering and can be used in turbomachine oil supply systems.

The aim of the invention is to increase reliability by passing the optimum oil flow through a non-drain pipe.

FIG. 1 is a schematic diagram of the turbo-oil supply system; in fig. 2 - measuring device with hydraulic lock.

The system contains a main oil tank 1 connected to a pump 2, communicated by a pressure channel 3, on which is installed a throttle diaphragm 4 and an oil cooler 5 with a damping tank 6. The latter is equipped with a overflow pipe 7 and is connected to a main pipe 1 with a hydraulic lock 9, and line 10 for supplying oil to turbomachine bearings (not shown). A measuring device 11 is installed on the drain pipe 8, made in the form of a partition 12 with an opening 13, a voush block, a flow section of the drain pipe 8 and placed between the holes 14 and 15 made in the last. The measuring device 11 contains a differential pressure meter 16 for measuring the oil level above partition 12. Last with hole 13 and holes 14 in the drain pipe 8 form a throttle device, which together with the differential pressure gauge 16 is a measuring device 11. To the latter is a hydraulic seal 9, which is made in the form of holes 14 and 15 fixed in the zone on the drain pipe 8 of the upper 17 and lower 18 chambers connected to each other by a pipe 19, and by a pipe 20 of the air outlet - with the air space 21 of the damping tank 6. The lower section 22 of the pipe 19 is located below the hole 15. To the lower chamber 18 of the airlock 9, the pipeline 23 is connected to the emergency supply of oil to the turbo-mashine bearings.

During operation of the turbomap, the oil is pumped through the throttle diaphragm 4 and the oil cooler 5 through the pressure path 3 to the damping tank 6. From the damping tank 6, through line 10, the oil flows to the bearings of the turbomachine. Excess oil through the overflow pipe. 7 is discharged through the drain pipe 8 into the main oil tank 1. Depending on the overflow in the measuring device I, a level (not shown) of the oil is established above the partition 12, measured by a differential pressure gauge 16. According to the flow characteristics of the holes 13 and 14 and the level of oil

0

above the partition 12, the amount of oil overflow from the damper tank 6 is determined. A change in the amount of overflow, the fixing of the optimum oil pass is produced

by changing the diameter of the throttle diaphragm 4.

Through the openings 14 of the discharge pipe 8, the oil enters the upper chamber 17, from where it is discharged through the pipe 19 to the lower chamber 18 and from there through the opening 15 goes to the drain pipe 8 and then to the main oil tank 1. In the upper 17 and lower 18 chambers separation of air from the oil. Separated air is diverted through air exhaust line 20.

5 into the airspace 21 of the damper tank 6, as a result, the flow of air into the main oil tank 1 is reduced, the operation of the ventilation system is improved, which prevents the oil from escaping from the turbo mashines. Damage

0 lubrication system during an emergency stop of the turbomachine oil to the bearings comes from the lower chamber 18 of the air seal 9 through the pipeline 23 emergency oil supply.

25

Claims (2)

1. An oil supply system of a turboburnine containing a main oil tank connected to a pump, communicated by a porous duct, on which a choke diaphragm and oil cooler are installed with a damper tank, equipped with an overflow pipe and connected a drain pipe with a hydraulic seal to the main oil tank, oil supply line - to 35 bearings, an air discharge pipeline, a measuring device and an emergency oil supply pipeline, characterized in that, in order to increase and reliability by passing the optimum mass flow rate through the overflow pipe, the measuring device  installed on the drain pipe and & executed in the form of a partition with a hole that overlaps the flow section of the drain pipe and is placed between the holes made in the last, and the hydraulic plug is made in the form of fixed in the zone of the holes on the drain pipe of the upper and lower chambers connected by a pipe , and with the air exhaust pipeline - with the air space of the damper tank. 50 2. The system under item 1, characterized in that the pipeline emergency supply of mas,; and is connected to the lower chamber of the hydraulic valve or 21 7 20 R I W eight / / FIG. one