What is the specific content of the inspection of the hydraulic turbine before starting the test operation of the hydrogenerator unit? Zhongda Consulting will answer the questions below?
1. The turbine wheel and all components have been installed and inspected and passed inspection. The construction files are complete. The space between the upper and lower sealed rings or the space between the axial flow turbine. The runner blades and runner chamber have been checked and there is no debris left behind.
2. The vacuum cut-off valve has been installed and passed the leak test and action test under the design pressure.
3. The top cover drainage pump has been installed and passed inspection (manual) and the automatic operating circuits are normal. Artesian drainage holes are clear and unobstructed.
4. The main shaft working seal and maintenance sealnce have been installed and inspected and the maintenance seal is free of leaks. Adjust the water pressure of the working joint to the value specified by the design.
5. The water guide bearing lubrication and cooling system was inspected and passed inspection. The oil level, temperature sensor and cooling water pressure have been debugged, and each setting value meets the design requirements.
6. The water guide mechanism has been installed and inspected and is in a closed state, and the relay is locked and put in place. The maximum opening of the guide vane, tightness after closing and pressing stroke were verified to meet the design requirements. The shear pin shear signal and other guide vane protection devices have passed the inspection test.
7. All pressure gauges, flow meters, flow meters, swings, sensorsvibration sensors and various transmitters were installed. The pipes are well connected and debris has been removed.
8. The waste water jet air supply device has been installed and closed. Assuming that the waste water will not flow back, the natural air supply valve to the turbine shaft should be opened.
For more information on drafting and producing engineering/service/purchasing tender documents to improve the bid winning rate, you can click on the official website customer service at the bottom for free consultation: https://bid. lcyff.com/#/?source=bdzd