Cylinder safety lubrication system for large low speed operation internal combustion engine and large low speed operation two stroke internal combustion engine

摘要

Cylinder safety lubrication system for large low-speed operation internal combustion engine and large low-speed operation two-stroke internal combustion engine. Lubrication system for a cylinder (1) of a large-sized low-speed internal combustion engine. The lubricating system includes a plurality of lubricating oils connected to the lubricating oil pump device (11) via one lubricating oil supply pipe among the plurality of lubricating oil supply pipes (9) to which each lubricating oil injector corresponds. Including an injector (4). The injector (4) has an injection pressure level that operates to discharge the lubricating oil. Each of the plurality of lubricating oil supply pipes (9) is connected to the upstream side of one overpressure safety valve among the corresponding plurality of overpressure safety valves (16), and the corresponding lubricating oil supply pipe (9). When the internal pressure exceeds a predetermined overpressure safety level higher than the injection pressure level, the overpressure safety valve (16) is opened. The downstream side of all the overpressure safety valves (16) is connected to a common overpressure detection device (17, 19, 26), and the overpressure detection devices (17, 19, 26) have a plurality of lubricating oil supply lines. (9) is configured to issue a signal when the pressure in any one of the lubricating oil supply lines exceeds a predetermined overpressure safety level. In particular, the overpressure safety valve (16) is provided apart from the lubricating oil pump device (11) and is connected to the lubricating oil pump device (11) only by the pipes (9, 15) via the lubricating oil supply conduit (9). Communicates. [Selection] Figure 1