Technical Realization Elements of Special Lubrication Device for Steam Turbine

Technical realization elements:

5. The purpose of the present utility model is to overcome the defects of the existing lubricating devices that have hidden safety hazards, and to provide a special lubricating device for steam turbines.

6. The utility model provides a special lubrication device for a steam turbine, which includes an oil tank 1, an oil pump assembly 2, a plc controller 4, a cooling component 9 and a water tank 13. The oil tank 1 and the oil pump assembly 2 are connected through a main oil pipe 10. The main oil pipe 10 is provided with a double filter 3, the right end of the double filter 3 communicates with the steam turbine assembly 6 through the main oil pipe 10, and the steam turbine assembly 6 communicates with the cooling component 9 through the hot oil pipe 15. One end of the cooling component 9 is provided with an oil drain pipe 17. The hot oil pipe 15 extends into the cooling component 9 and communicates with one end of the oil drain pipe 17, and the other end of the oil drain pipe 17 is connected to the oil tank. 1 is connected, the plc controller 4 is connected with an alarm 5 through a wire, and the plc controller 4 is electrically connected with the oil pump assembly 2.

7. A further solution is that the oil pump assembly 2 includes a main oil pump and an accident oil pump, and the main oil pump and the accident oil pump are of the same model.

8. A further solution is that the main oil pipe 10 is divided into several branch oil pipes to communicate with a bearing 8 arranged inside the steam turbine assembly 6.

9. A further solution is that a flow detector 7 is provided on each of the branch pipes.

10. A further solution is that the flow detector 7 is signally connected to the plc controller 4.

11. A further solution is that a cold water pipe 11 is arranged inside the cooling component 9 and the cold water pipes 11 are arranged in an s-shape in the cooling component 9.

12. A further solution is that the cold water pipe 11 is provided with a temperature sensor 16 inside, and the cold water pipe 11 is provided with a solenoid valve 14 at one end, and the other end extends into the water tank 13.

13. A further solution is that a water pump 12 is provided inside the water tank 13, and the water pump 12 is in communication with the cold water pipe 11.

14. A further solution is that the temperature sensor 16 and the solenoid valve 14 are both signally connected to the plc controller 4, and the water pump 12 is electrically connected to the plc controller 4.

15. Compared with the prior art, the beneficial effects of this utility model are:

16. (1) This utility model is equipped with a main oil pump and an accident oil pump. When the main oil pump fails, the accident oil pump can be quickly started, and the lubrication will not be interrupted due to the damage of the oil pump, which reduces the maintenance cost of the steam turbine caused by the problem of the lubrication system .

17.(2) This utility model connects the flow detector to the PLC controller signal. When it is detected that the lubricating oil flow of the branch oil pipe is lower than the preset value, the PLC controller can turn on the accident oil pump in time to continue working, which can realize real-time faults in time Troubleshoot.

18. (3) The utility model is also provided with cooling components, which can realize the cooling effect on the high-temperature lubricating oil, and slow down the working environment of the bearing with continuous high temperature.

19. (4) One end of the cold water pipe of the present invention is connected with the water pump, and the other end is provided with a solenoid valve. When the water temperature is too high, the solenoid valve can be opened for water exchange, ensuring the cooling effect.

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