Exhaust passage optimization method and system used for turbine

Abstract

The invention relates to the technical field of turbines and discloses an exhaust passage optimization method and system used for a turbine. The method comprises the steps of collecting exhaust parameters in an exhaust passage of the turbine; applying the exhaust parameters to a three-dimensional model of the exhaust passage of the turbine, and calculating a steam flow field value of the exhaust passage of the turbine; and comparing the calculated steam flow field value with a set value, and when the calculated steam flow field value is inconsistent with the set value, adjusting an arrangement mode of a flow-equalizing apparatus in the exhaust passage of the turbine. According to the method, the steam flow field value of the exhaust passage of the turbine is adjusted to reach the set value, so that the exhaust eddy is reduced, the exhaust velocity is uniformized, the structures such as the exhaust passage, a turbine low-pressure cylinder connected with the exhaust passage, and the like are more reasonable, and the product life and the heat exchange capability are prolonged and improved.

Description

technical field [0001] The invention relates to the technical field of turbines, in particular to an optimization method and an optimization system for an exhaust steam channel of a turbine. Background technique [0002] The exhaust steam channel of the steam turbine is used to cool and condense the steam at the exhaust port of the turbine to reuse the heat energy of the steam. In the 1980s, the performance of the exhaust channel of the low-pressure cylinder of the steam turbine was studied, and it was proved by experiments that the heat transfer coefficient of the condenser tube bundle increases with the steam velocity, but when the steam velocity exceeds 50m / s, the heat transfer coefficient does not change. . The experimental research conclusion shows that optimizing the exhaust channel and making the steam flow field at the inlet of the condenser tube bundle relatively uniform and reasonable can improve the overall heat transfer coefficient of the condenser, achieve the ...

AI Technical Summary

Problems solved by technology

[0005] However, the existing research conclusions on the exhaust performance of turbine exhaust channels are mostly used in the design of modified products, and no separate products have been formed, and there is no way to deal with the defects of operating units. The existing research is all about specific structures and specific models. Large investment, heavy burden, lack of flexibility and universal applicability

Images