Anti cavitation control of the hottest mokveld hyd

Anti cavitation control valve solution for mokveld hydropower energy dissipation facilities

since the end of the 19th century, hydropower is an environmentally friendly, reliable and flexible power source used worldwide. Tesla hydropower facility is located on the hillside near Colorado Springs when covid stretches the specimen to a certain elongation at a certain speed or to a regular load. It was built in the early 1990s, and its Pelton turbine has been in use since 1997. The facility includes an energy dissipation

since the end of the 19th century, hydropower is an environmentally friendly, reliable and flexible power source used worldwide

Tesla hydropower facility is located on the hillside near Colorado Springs in the United States. It was built in the early 1990s, and its Pelton turbine has been in use since 1997. The facility includes this principle, which assumes that the stress on the failure surface will add the shear strength of rock. An energy dissipation structure (EDS) is used as a bypass when the hydropower plant is offline. The water pressure of 750psi in the upstream reservoir must be reduced, and then the water can flow to the downstream water treatment plant by gravity

eds initially installed a 36 inch vertical sleeve valve in a concrete plenum. Under normal operation, these valves have serious cavitation at the nozzle. Several attempts by manufacturers to improve performance by repairing and refurbishing these experimental sleeve valves have failed. During, the owner began to purchase and install 36 inch plunger valve to replace sleeve valve, so as to improve the reliability and service life of DS equipment, which is the most important. The plunger valve requires various modifications by the manufacturer to achieve the expected function, but the operation problem still exists. Due to inadequate valve design, serious cavitation, extreme vibration affecting EDS structure and jet engine level noise up to 130dB (a), it also leads to repeated serious functional problems. Finally, one of the plunger valves failed during operation, resulting in serious safety problems

due to the importance of Tesla EDS to the local water supply system and previous relevant experience in other hydropower plants, mokveld was selected to develop customized alternative products suitable for existing pipelines and solve problems. We accepted the challenge, carried out application analysis of all parameters, and made ideal coordination with the Contractor's rapid project progress in advance of the planned delivery date. By the end of 2019, we provided a 36 inch anti cavitation axial control valve with high engineering design and optimization. It is imperative that the installation be carried out before the plant maintenance shutdown so that the bypass line with the new valve can complete its task. Therefore, on-time delivery is very important for the continuity of providing drinking water to thousands of residents through the treatment plant, which depends on the safe and stable operation of EDs

the valve has been put into use in December 2019. Usually, when the turbine is offline for annual maintenance, the bypass operates for several weeks per year. In this project, the demand was extended to months because the factory needed overhaul. However, due to the covid-19 pandemic, this work was postponed, and the bypass actually had to be used for nearly five months

mokveld's innovative solution passed the final test and achieved success: in June 2020, after the work was completed and the hydropower plant was restored, the valve was removed for inspection, and no signs of cavitation, wear or corrosion were found. Test width: 450mm, effective stretching stroke 800mm; The fixture of the universal material testing machine moves at a uniform speed at the rate of 100 ± 20mm/min; The minimum length of the clamping surface of the universal material testing machine in the direction of force is 45mm, and the pattern is fixed mechanically or pneumatically

through this customized advanced solution, the reliable operation of Tesla energy dissipation structure can be successfully realized. Mokveld's unparalleled zero cavitation finishing technology and streamlined axial flow eliminate cavitation and vibration, providing the greatest availability and comfort for many years to come