VHT provides the many hydraulic cylinders required for a barrier system to control flows.
Saltwater can be a major problem for farms as it limits the amount of land that can be used to grow crops and cannot be used for any kind of irrigation. For some farms in Vietnam, this isa serious issue, especially for those between the Cái Bé and Cái Ló’n rivers. Rice farms in this area have been struggling with the ingress of seawater for a long time, so the Vietnamese government decided to build a barrier system to control flows. They chose VHT to provide the many hydraulic cylinders required.
Once complete, the two barriers will open and close based on tidal patterns, and the idea is that they will help local farms with ensuring more consistent access to fresh water while limiting their exposure to saltwater. “If you irrigate land with saltwater, not much will grow,”says Khoa Nguyen Bach, Senior Sales Manager in Vietnam. “With the new barriers, they will be able to expand the area where they can farm. This is better for the local community, and better for the economy in general as it allows for bigger crops and better yields. The barriers are big, and open and close using hydraulic technology. For this project, VHT provided the hydraulic cylinders which move the barriers.”
VHT was chosen as the supplier for the hydraulic cylinders as it had already worked with the Vietnamese government on another barrier on the Mekong Delta, which is meeting the performance levels required. It was already known that whatever the demands, VHT had the expertise and capability to meet them.
The right cylinder solutions
To reliably move both of these large barriers, the project required a total of 68 hydraulic cylinders of varying sizes, with the largest stroke length being very large at 17.2 meters. As these cylinders will be exposed to the elements, and used on a regular basis, VHT needed to ensure that each one was engineered to last.
With these cylinders, the rod coating is important. The latest Enduroq 2200 technology is used, which is designed for the best possible performance and durability. VHT also used this on the cylinders used in the Ho Chi Minh City Flood protection project, and this is one of the reasons they came back to us.
The request came through towards the end of 2019, and just over a year later all cylinders had been manufactured and delivered to the site. This is an extremely quick turnaround, especially when considering the size of the cylinders combined with the logistical challenges.
Built to last
Although VHT provided some consultancy on the hydraulic systems for this project, the main part of the delivery was the 68 cylinders, and each one of these is built to perform for many years. Reliability is essential for technology used in these projects, as it impacts local communities and businesses, so having proven expertise and solutions, alongside confidence in the final product, was essential.
VHT solutions have long warranty periods, so the customer knows that they’ll be able to get replacements or repairs if anything goes wrong in the first few years. The lifetime of the cylinder products is measured in kilometers, so even though some of the stroke lengths are large, it will be a long time before they need to be replaced.
Beyond the barriers
In addition to this project, there are many opportuni-ties for VHT in the future. There are many more areas of land which could benefit from barriers like this and given the performance of the solutions provided so far, the future looks bright.“It’s great to work with projects like this,” Khoa Nguyen Bach concludes. “It’s something that really will contribute to the local environment and will help people on a local level as well. It’s something that will make a big difference, and it was special to be a part of this.”
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Large Hydraulic Cylinders Customzied Solutions
At Van Halteren Technologies, your project is our challenge. We design and manufacture custom built cylinders, high pressure piston accumulators and pressure vessels for your individual applications. Our production capabilities for large hydraulic cylinders include bore sizes up to 1,500 mm. Additionally, we offer specialized expertise in manufacturing cylinders with strokes reaching 27 meters and beyond. Our highly skilled specialists have a unique expertise for a large variety of
industry sectors and know the special requirements of your application.
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For more information about our hydraulics in civil and industry applications, please contact Hans Verschuuren or Jack Bergmans, our Sales Managers and hydraulic experts.
