Research on thrust supports performance and runner-pump extrinsic technology of silver plate hydropower station

LEI Ting， HU Xin-fan， QIN Liu-sheng
（Yellow River Engineering Consulting Co.， Ltd.， Zhengzhou 450003， China）

Abstract： In order to evaluate the silver plate thrust bearing support hydropower station on the unit operation performance of stability and validate mirror the circulation technology in the plate pump the cooling effect of the design condition，according to the different structure features thrust bearing support performance analysis，the advantages of the silver plate hydropower station thrust bearing elastic support structure in the shaft mailbox circulation paddle type hydraulic power generating automatic adjustment in the bearings force balance was expounded. At the same time，the use of fluid mechanics formula to silver plate hydropower station board pump cycle system outside mirrors work pressure head and flow were calculated，combining with the unit operation condition test. The experimental results show that the elastic mailbox of the support structure thrust bearing，can make the thrust bearing bush force between the uneven get the basic improvement，greatly improving the unit operation of stability. Through calculation and analysis，combined with the unit operation monitoring data，it is concluded that the silver plate hydropower station mirror board pump real pressure head coefficient and flow coefficient，lens board the circulation system can pump in near design working conditions，the inspection data to see system cooling effect is better.
Key words： thrust block； bearing performance； runner-pump； extrinsic cycle technology； silver plate hydropower station