JPS5999104U

JPS5999104U - Turbine lubricator

Info

Publication number: JPS5999104U
Application number: JP19495582U
Authority: JP
Inventors: 昭久坂本
Original assignee: 株式会社日立製作所
Priority date: 1982-12-24
Filing date: 1982-12-24
Publication date: 1984-07-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のタービン潤滑装置の配管図、第２図は本
考案のタービン潤滑装置の実施例の配管図である。１・・・タービン、８・・・主油ポンプ、３０・・・押
込油ポンプ、３４・・・ターニング油ポンプ。FIG. 1 is a piping diagram of a conventional turbine lubrication system, and FIG. 2 is a piping diagram of an embodiment of the turbine lubrication system of the present invention. 1...Turbine, 8...Main oil pump, 30...Forcing oil pump, 34...Turning oil pump.

Claims

[Scope of utility model registration request]

In a turbine lubricating oil system consisting of a turbine shaft-driven main oil pump, an AC motor-driven forced oil pump, an AC motor-driven turning oil pump, a DC motor-driven emergency oil pump, an oil cooler, and an oil tank, the main oil pump has a low discharge capacity. The main oil pump is of a compressed type, and the oil pipe on the main oil pump discharge side is used to continuously supply the suction oil of the main oil pump with a forced oil pump, and to secure the suction oil of the main oil pump by stopping the forced oil pump during the turbine shutdown process when AC power is lost. Two bypasses with orifices are provided in the oil pipe on the suction side, and one is provided between the check valve on the discharge side of the main oil pump and the oil pump, and one is provided between the check valve on the discharge side of the main oil pump and the oil pump. The bypass flow rate is about ~10%, and the other one is installed after the main oil pump check valve, and the flow rate is set so that it can supply the amount of shaft seal leakage of the main oil pump, so that when the forced oil pump is stopped, the main oil pump discharge oil suddenly increases. When the emergency oil pump starts, the check valve on the discharge side of the main oil pump closes, and the oil discharged from the main oil pump passes through a bypass with an orifice installed between the check valve and the main oil pump and bypasses it to the suction side. This creates a closed loop to circulate the pump discharge side and suction side, and in this closed loop, a bypass is provided to replenish the shaft seal oil of the main oil pump, so even if the forced oil pump is stopped, the main oil pump can be operated. Turbine lubrication system with circuits to protect and safely shut down the turbine.