Recently, Jiangsu Hengli Hydraulic Co., Ltd. and Yanshan University jointly designed and developed a seawater desalination unit for the assembly of seawater tanks, and successfully passed various functional tests and delivered to customers. The composite seawater tank adopts an integrated parallel design. The cylinder head and the bottom part of the cylinder are integrated with two sets of specially designed inlet and drain valves to control the orderly entry and exit of seawater and concentrated water, respectively. The simple and integrated structure of the cylinder is conducive to the convenient installation of the equipment.
Unlike conventional cylinders, the composite seawater tank requires a very high level of corrosion resistance. All parts are made of duplex stainless steel and have no welded construction. In order to meet the high-frequency (24-hour) continuous operation of the cylinder, the piston rod surface and the inner hole of the cylinder tube are all coated with APS (plasma spray) oxide ceramic, which greatly improves the wear resistance and corrosion resistance of the cylinder. For the highly corrosive environment of the offshore industry, Hengli Hydraulics has invested in the most advanced thermal spray and honing equipment production line in China. The maximum size of the workpiece is 1 meter, the maximum length is 23 meters, and the maximum weight is 50 tons. APS plasma spraying can be performed. HVOF supersonic spraying, laser cladding process. All imported honing machines are equipped with an on-line measuring instrument to ensure accurate measurement and honing surface quality. And equipped with the industry's leading testing laboratory to ensure the accuracy of quality testing during the production process.
In addition, the cylinder also adopts a special sealing structure and sealing material. Under the premise of ensuring the sealing performance, running speed and frequency of the cylinder, it can be effectively applied to the seawater medium and effectively scrape the crystals caused by the seawater medium. Sediment; at the same time, the sealing material must meet the FDA-approved (food grade) requirements to ensure that the water quality is non-polluting and meets the drinking level requirements.
As a new type of technology product, compound seawater tank plays a very important role in the future use of sea water resources for human daily life, and its market prospect is bright.
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