Lubricating and flushing system for lubricating oil pipelines of steam turbine generator unit

Abstract

A lubricating and flushing system for lubricating oil pipelines of a steam turbine generator unit comprises an oil box, a plate type oil filter, a high pressure starting oil pump and an oil filter; alow pressure oil ejector and a high pressure oil ejector are arranged on the oil box; and an oil inlet of the plate type oil filter is connected with an oil outlet of the oil box through a first pipeline, an oil outlet of the plate type oil filter is connected with an oil return port of the oil box through a second pipeline, and a first valve is arranged on the first pipeline. According to the lubricating and flushing system for the lubricating oil pipelines of the steam turbine generator unit, by using the combination mode of the plate type oil filter, the high pressure starting oil pump of alubricating oil system and oil transportation pipelines, circular lubricating and flushing of the lubricating oil pipelines are achieved, the mounting efficiency is improved, the mounting cost is decreased, and the lubricating and flushing efficiency is improved at the same time.

Description

technical field [0001] The invention relates to the technical field of turbogenerators, in particular to a lubricating and flushing system for lubricating oil pipelines of turbogenerators. technical background [0002] During the construction of a thermal power plant, it is necessary to lubricate and flush the lubricating oil pipelines inside and outside the turbogenerator unit. Due to the different sizes of the turbogenerator unit and the differences in site design, the complexity of the lubrication system is different. , It is impossible to form a scientific and unified lubrication cycle flushing scheme. At present, turbogenerators of 150MW and below use large-flow oil filtering devices to flush lubricating oil pipelines. Since large-flow oil filtering devices do not have a complete set of oil pipelines (generally, the outlet pipe diameter of large-flow oil filtering devices is about φ219mm, and the system The diameter of the pipe is generally about φ133mm), and it is nec...

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Problems solved by technology

[0002] During the construction of a thermal power plant, it is necessary to lubricate and flush the lubricating oil pipelines inside and outside the turbogenerator unit. Due to the different sizes of the turbogenerator unit and the differences in site design, the complexity of the lubrication system is different. , unable to form a scientific and unified lubrication cycle flushing scheme

At present, turbogenerators of 150MW and below use large-flow oil filtering devices to flush lubricating oil pipelines. Since large-flow oil filtering devices do not have a complete set of oil pipelines (generally, the outlet pipe diameter of large-flow oil filtering devices is about φ219mm, and the system The diameter of the pipe is generally about φ133mm), and it is necessary to purchase pipes for welding and installation, which not only increases the installation and construction period, but also causes waste of labor, materials, and machinery; and the installation of large-flow oil filtering devices needs to be reserved in advance The focus is on fire protection, which seriously occupies the construction site in the steam turbine plant. After the installation is completed, professional debugging and key protection are required, and the requirements for the user's ability are relatively high; due to the high power of the oil filter pump motor of the oil filter device, a cable with a higher withstand voltage must be used. To provide a reliable and safe power supply requires the cooperation of professionals, and professionals are required to fix the foundation of the large-flow oil filter equipment, which greatly increases the amount of construction work and imposes a burden on the tight construction period; in addition, the large-flow oil filter equipment higher acquisition cost

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