Turbine quality appraisal

Water turbine is a power machine that converts the energy of water flow into rotating mechanical energy. It is a turbine machine among fluid machines.
hydraulic turbine is the host machine of a complete set of hydraulic power generation equipment. It is used in conjunction with the hydraulic generator, speed regulator, excitation system and power station control equipment to form the main body of the hydropower station. The hydraulic turbine is designed and manufactured according to the flow rate and water head of the water. Its function is to convert water energy into mechanical work and drive the hydraulic turbine generator to generate electricity.
In the case of hydraulic turbine quality appraisal, Zhongke Testing can provide hydraulic turbine quality appraisal services.

Water turbines are divided into two categories according to the conversion characteristics of water flow energy: counterattack type and impact type. Each category can be divided into various forms according to the flow characteristics of the water flow in the runner area and the structural characteristics of the runner.
1, impact turbine
Impact turbine can be divided into four types: Francis flow type, axial flow type, oblique flow type and cross flow type according to the different flow directions of the water flow in the runner area relative to the main axis.
2, impact turbine
impact turbine can be divided into bucket type, oblique impact type and double impact type according to the different ways of jet impact runner.

GB/T 15469-2008 Cavitation erosion assessment of hydraulic turbines, storage pumps and water pump turbines
GB/T 15613-2023 Acceptance test of hydraulic turbines, storage pumps and water pump turbines
GB/Z 35717-2017 Measurement of flow rates of hydraulic turbines, storage pumps and water pump turbines Ultrasonic propagation time method
GB/T 17189-2017 On-site test procedures for vibration and pulsation of hydraulic machinery (hydraulic turbines, energy storage pumps and water pump turbines)
GB/T 20043-2005 On-site acceptance test procedures for hydraulic performance of water turbines, energy storage pumps and water pump turbines
GB/T 19184-2003 Pelton turbine cavitation evaluation
GB/T 15468-2020 Basic technical conditions of water turbine
GB/T 21718-2021 Basic technical conditions of small water turbine
GB/T 9652.2-2019 Turbine speed control system test
GB/T 22140-2018 Small hydraulic turbine on-site acceptance test procedures
0

In order to further identify the cause and responsibility of the accident, the client hopes to determine whether there are quality problems with the "water turbine" involved and apply for a quality analysis of the product.
appraisal analysis results:
The quality analysis expert team conducted a situational understanding, relevant tests and comprehensive technical analysis of the "water turbine" involved, and made the following quality analysis opinions:
The hose assembly of the "water turbine" involved has physical evidence that the joints and hoses are not tightly clamped, which reduces the deformation resistance and friction of the joints and hoses after being clamped, causing the high-pressure oil pipe of the hydraulic turbine governor to fall off under long-term reversal impact.