Circulating system and method for lubricating oil of steam turbine

Abstract

The invention relates to a circulating system and method for lubricating oil of a steam turbine, and the circulating system and method are used for filtering and purifying the lubricating oil for each bearing on a rotating shaft and a pipeline system of the steam turbine. The circulating system for the lubricating oil comprises a lubricating oil tank, a high-actuation oil pump, a plurality of filters and a duplex filter; lubricating oil is stored in the lubricating oil tank; an inlet of the high-actuation oil pump is connected with the lubricating oil tank; an outlet of the high-actuation oil pump is connected with a main oil pipe; the main oil pipe is connected with a plurality of branch oil pipes; the branch oil pipes are connected with the corresponding bears; the filters are arranged on the corresponding branch oil pipes and are located at the front ends of the corresponding bearings; each bearing is connected with a branch oil return pipe; all the branch oil return pipes are connected with a main oil return pipe; the main oil return pipe is connected with the lubricating oil tank; and the duplex filter is arranged on the main oil pipe. By using the circulating system and method for the lubricating oil of the steam turbine, the oil circulating efficiency of the steam turbine is increased, and the overhaul time and the trial operation time are shortened.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a steam turbine lubricating oil circulation system and method. Background technique [0002] Turbine oil circulation is the focus of each new power plant's trial operation stage and the maintenance stage of the power plant in operation. In the case of tight installation and maintenance schedules, how to shorten the oil cycle time and meet the required conditions before trial operation has become a topics worth exploring. The invention proposes a steam turbine oil circulation method. By adding a special high-efficiency filter element and a high-low temperature alternating oil circulation method to the system, the traditional oil circulation process is improved, the oil circulation efficiency is improved, and the time for maintenance and trial operation is shortened. [0003] The efficiency of the oil circulation process in the prior art is relatively low, which results in ...

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Problems solved by technology

[0004] The invention provides a steam turbine lubricating oil circulation system and method, which solves or partially solves the technical problem of the low efficiency of the oil circulation process in the prior art, which leads to a long time for steam turbine maintenance and trial operation, and realizes the improvement of traditional lubricating oil. Circulation technology improves the oil circulation efficiency of the steam turbine and shortens the time for maintenance and trial operation.

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