Ball and Butterfly valve design in application for Hydropower industry 1

SD12 · Apr 8, 2020

Hello.

I am interested in design of the ball and butterfly valves that used in hydropower industry. Such valves installed in front of the turbines in hydropower plants. Which standards and/or literature describes the following: Stress analysis of the valve housing, counterweight design and hydraulic design of the valve based on the flow rate?

Thank you in advance,
Sergey

honza1801 · Jul 18, 2020

Hello,
The strength analysis is performed, for example, according to EN13445-3.
The size of the counterweight must be determined by the braking force in the hydraulic cylinder.
- The braking force is equal to the closing torque divided by the arm.
- the closing torque is equal to the torque from the counterweight plus the hydraulic torque minus the bearing friction minus the friction from the seal.
- hydraulic torque see. link:

https://met-calc.com/index.php?stranka=sphericalvalve

The minimum and maximum pressures in the hydraulic cylinder must be checked.

SD12 · Jul 27, 2020

honza1801

Thank you for reply and comprehensive explanation.

Best regards,
Sergey

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Ball and Butterfly valve design in application for Hydropower industry 1

SD12

Mechanical

honza1801

Computer

SD12

Mechanical

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