At the 7th China Shanghai International Fluid Machinery Exhibition and Valve Expo, the 56-inch fully welded ball valve independently developed by Jade Valve Co., Ltd. was officially unveiled. The valve has a weight of 40 tons and is also a localized product. Originally, the large-diameter welded ball valve relied on imports. At present, it has broken the monopoly of foreign countries and achieved localization.
According to Chen Zhiming, vice president of YuJi Valve Co., Ltd., the 56-inch fully welded ball valve developed by YuJi Valve Co., Ltd. is also domestically produced. The air-hydraulic linkage actuator provided by Chengdu Zhongye Fluid Control Equipment Co., Ltd. is suitable for temperature - 46 100 °C, the main medium is natural gas. This large-caliber all-welded ball valve is tailor-made for the long-distance oil pipelines of PetroChina. To develop this giant, the engineers and technicians of Jade Valve Co., Ltd. have done welding, processing, processing, assembly, and testing. Tackling problems, overcame various difficulties, innovated the overall structural design technology based on the analysis and calculation of the actual load of the ball valve, the design technology of the sealing structure of the anti-abrasion valve seat, the low residual stress that meets the requirement of the main weld of the valve, and the low temperature special automatic welding technology. The fracture mechanics theory was successfully applied for the first time in the safe assessment of the main weld seam CTOD weld heat-relief, and new high-pressure, large-caliber all-welded ball valves adapted to the long-distance gas pipeline buried installation were developed. The relevant technical indicators have reached the international level. The level of the product. It shows that the domestic ball valve design and manufacturing enterprises have maturely mastered the manufacturing technology of fully welded ball valve sealing, heat-free welding, and have the supporting manufacturing, testing and inspection equipment. The new project long-distance pipeline full-welded ball valve is fully domestically designed and manufactured. Ensure that the valve design meets continuous operation for more than 30 years, and the relevant performance (operation and sealing) can meet the requirements of working conditions for a long time.
YuJi Valve Co., Ltd. is one of the three domestic companies that have entered China PetroChina's long-distance pipeline valve designation. Currently, Jade Valve Co., Ltd. provides a large number of large-diameter fully-welded ball valves for long-distance pipeline valve localization, and is also a national long-distance pipeline. The major localization of valve equipment has contributed.
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