Thermal power generator unit high-temperature and high-pressure pipeline flushing system and method
A high-temperature, high-pressure, pipeline flushing technology, which is applied in the field of steam turbines, can solve problems such as long overhaul period, damage to steam turbine blades, high-temperature pipe bursts, etc., and achieve the effects of reducing environmental noise pollution, reducing energy loss, and preventing water impact
Active Publication Date: 2020-04-03
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology
[0002] After the steam turbine generator set has been in operation for a period of time, it must be overhauled and maintained. The overhaul period is long, and impurities and dirt will be generated in the steam-water pipeline due to the maintenance. It will also cause local high-temperature pipe burst, the water quality of the steam-water circulation system is unqualified, and the service life of the condensate water polishing device will also be affected due to poor water quality.
In the case of a high proportion of clean energy, the frequency of thermal power units participating in peak regulation by shutting down increases, and there are long-term shutdowns during wet seasons, and corrosion of soda and water pipes increases
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0032] Please according to figure 1 and figure 2 , the present invention provides a high-temperature and high-pressure pipeline flushing system for a thermal power unit, which mainly includes a high-temperature and high-pressure drainage expander 36, a high-pressure steam collection pipe 25, a medium-pressure steam collection pipe 32, a reheating hot section drainage tank 1, and a reheating and cold section drainage tank 1. Tank 7, main steam drain tank 13...
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The invention discloses a thermal power generator unit high-temperature and high-pressure pipeline flushing system and method and belongs to the technical field of steam turbines. The system mainly comprises a high-temperature and high-pressure drain flash tank, a high-pressure steam collection pipe, a medium-pressure steam collection pipe, a hot reheating drain tank, a cold reheating drain tank,a main steam drain tank, a first-stage steam extraction drain tank, a cold-stage to auxiliary steam header extraction drain tank, a control system, a pipeline and valves. The thermal power generator unit high-temperature and high-pressure pipeline flushing system is used for new design of units or overhaul of technically improved units. After completion of installation, related devices can operatewith the whole system for a long term, and then there is no need to dismantle a steam turbine and the related devices of the steam turbine and install and dismantle temporary pipelines and valves onthe system. The thermal power generator unit high-temperature and high-pressure pipeline flushing system achieves the flexible blow-washing effect on high-temperature and high-pressure pipelines suchas a main steam pipe, a cold reheating steam, a hot reheating steam pipe, a first-stage steam extraction pipe and a cold-stage to high auxiliary header pipe.
Description
technical field [0001] The invention relates to the technical field of steam turbines, in particular to a high-temperature and high-pressure pipeline flushing system of a thermal power unit and a method thereof. Background technique [0002] After the steam turbine generator set has been in operation for a period of time, it must be overhauled and maintained. The overhaul period is long, and impurities and dirt will be generated in the steam-water pipeline due to the maintenance. It will also cause local high-temperature pipe burst, the water quality of the steam-water circulation system is unqualified, and the service life of the steam-water polishing device will also be affected due to poor water quality. In the case of a high proportion of clean energy, the frequency of thermal power units participating in peak regulation by shutting down is increasing. During the wet season, there are long-term shutdowns, and the corrosion of soda and water pipes increases. Contents of...
Claims
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IPC IPC(8): B08B9/032B08B13/00
CPCB08B9/0321B08B13/00
Inventor 文立斌吴健旭
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD