Cause and treatment of HP main stop valve jam on a 300 MW steam turbine;

Analysis of governor valve jam fault in DEH system and countermeasures

The paper describes some jamming phenomena at intermediate pressure main stop valve on a 600MW steam turbine,reasons are analyzed and some effective methods are carried out.

Study of jam fault of electronic-hydraulic servo valve based on flutter signal in 300 MW steam turbine;

By investigating feed water pumps design and commission of the 600MW thermal power generation units,the reasons of rotational parts jam fault in turbine-driven feed water pump were analyzed.

It analyzed the problems of spray nozzle wearing,plugging and check valve stuck.

The 6 # generator s hydraulic servomotor in Huangpu power plant is prone to get stuck while operating.

In the light of frequent jamming at intermediate pressure main stop valve of homemade 300MW turboset,disassembly analysis of the faulty main stop valve was carried out and appropriate modification was made.

7 redial bearing bush,jamming of speed governing system and water in oil.

Through the analysis and summary to the practice,the jamming cause and disposal was put forward to do well in the fault disposal of the generator seal oil system.

Analysis and countermeasures of block in HP governor valve of 125 MW unit;

Focus on the leak and block of the high pressure main stop valve,from the material of the gasket,the pressure of the bolt and the entire mechanical structure in Gujiao Xingneng Power Generation Co.