Bypass system of condensed water precision processing system of thermal power plant and control method thereof

Abstract

The invention discloses a bypass system of a condensed water precision processing system of a thermal power plant and a control method thereof, and belongs to the field of medium-pressure condensed water precision processing system of conventional thermal power unit. The bypass system comprises a secondary preposed filter unit bypass, a secondary high-speed mixed bed unit bypass and relative pipes, and control valves. The secondary preposed filter unit bypass and the secondary high-speed mixed bed unit bypass are in series connection through a bypass pipeline; the bypass pipeline is bridged across a condensed water inlet common header pipeline and a condensed water outlet common header pipeline. The inlet common header pipeline, a branch pipeline and the outlet common header pipeline are respectively provided with a pipeline A automatic valve, a pipeline B automatic valve and a pipeline C automatic valve. When working condition of the condensed water precision processing system is abnormal, or the pipelines and the control valves need maintenance, the bypass system provides passageway for the condensed water. The bypass system provided by the invention is simple, and has perfect control functions; and the added pipeline automatic valves can rapidly isolate or start the whole set of the condensed water precision processing system, and are convenient for operation, management and maintenance.

Description

technical field [0001] The invention relates to the field of a medium-pressure condensate polishing system of a conventional thermal power unit, in particular to a bypass system and a control method of the condensate polishing system of a thermal power unit. Background technique [0002] The basic production process of thermal power generation is: the fuel is burned in the thermal system to heat water into steam. This process converts the chemical energy of the fuel into thermal energy, and the steam pressure drives the steam turbine to rotate. This process converts thermal energy into mechanical energy, and the steam turbine drives the generator. Rotation, a process that converts mechanical energy into electrical energy. Thermal power generation unit is a mature and advanced power generation technology in the world. Thermal power generation unit is widely used due to its high thermal energy conversion efficiency, low coal consumption for power generation, low environmental ...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the cumbersome design of the bypass device of the condensate polishing system in the prior art, the cross-function, and the inconvenient isolation and maintenance of the inlet and outlet valves of the pre-filter and high-speed mixed bed unit, the entire set of condensate polishing system cannot be quickly started and isolated. Problem, the embodiment of the present invention provides a bypass system and control method for the condensate polishing system of a thermal power unit

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