【Ten Years of Rapid Development in Chemical Processing Equipment】Development of ultra-large diameter, ultra-high pressure, corrosion-resistant wedge gate valves completed from 1808 to 2024

Thread Content

This post was last edited by FishSwimmingInTheDesert on May 24, 2024, at 08:15. Happy Labor Day 2024! Safety comes first. Let’s give a thumbs up and cheer for the achievements made in China’s chemical engineering technology and equipment. ********************** [Ten Years of Great Development in Chemical Engineering Equipment] This is a continuously updated summary thread; all are welcome to join the discussion: https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Engineering Forum) ***************** The extra-large diameter, ultra-high pressure corrosion-resistant wedge gate valve boasts numerous advantages, such as low fluid resistance, excellent sealing performance, short structural length, ease of operation, no restrictions on the direction of medium flow, minimal erosion of the sealing surface by the working medium when fully open, and relatively straightforward manufacturing processes. It is ideal for use in liquid pipelines operating under high temperatures and pressures. However, due to its larger diameter, the design and manufacturing challenges increase accordingly, which has consistently hindered the development of the valve industry. To address this issue, the High-Performance Metal Materials Genetic Engineering and Additive Manufacturing Team led by Researcher Zhang Chi from the School of Materials at Tsinghua University (hereinafter referred to as the “Team”) relies on the Wuzhen Laboratory. Based on the concepts of material genetics, as well as the target properties of high-end components and the characteristics of advanced manufacturing processes, and utilizing techniques such as multimodal data mining, multi-scale and multi-theoretical simulation calculations, and high-throughput testing and characterization, the team designs material manufacturing processes that take into account the entire life cycle and all stages of production, thereby establishing an inherent relationship between characteristic microstructures and desired performance metrics ； By applying advanced manufacturing technologies, in collaboration with Valby Valve Co., Ltd., a 48\"-Class 900 ultra-large diameter, ultra-high pressure, corrosion-resistant wedge gate valve was successfully developed in Lishui, Zhejiang, filling a gap in China’s valve industry. The extra-large diameter, high-pressure, corrosion-resistant wedge gate valve is a type of valve used to control the flow of fluids in pipelines. Its large diameter and high pressure resistance make it suitable for various types of fluids, including water, oil, gas, as well as various corrosive substances. The designed diameter of this type of valve can reach 60 inches, with a pressure rating of 150 pounds or higher. Leveraging the intelligent alloy development platform that integrates data and knowledge, built using the principles of materials genetics, and relying on a knowledge graph-based intelligent system as well as API 600 standards set by the American Petroleum Institute, the team developed a customized approach for alloy development and industrialization for this product (process sequence: casting → heat treatment → machining → surface treatment → assembly and testing). During the design and manufacturing process, the team uses finite element simulation analysis to comprehensively evaluate the strength, stiffness, and flow characteristics of the valves, ensuring their safety and performance under large-diameter operating conditions. United Valve Biwei Valve Co., Ltd. uses specialized installation and maintenance facilities and areas during the manufacturing process to assemble valves. The interior cavity of the valve body is coated with epoxy resin, and the guide ribs on the valve body and the gate are subjected to special hardening treatments to enhance their corrosion and wear resistance. The valves can be installed either horizontally or vertically, and specialized testing equipment is used to evaluate their performance and strength. The company has successfully developed 48″-Class 900 ultra-large diameter, ultra-high pressure corrosion-resistant wedge gate valves, which are now produced on a large scale. This has contributed to the development of new manufacturing capabilities in the valve industry in Lishui, Zhejiang, and helped to boost the region’s and industry’s advanced manufacturing skills. It is reported that this product is currently being sold overseas and has been successfully applied in a seawater treatment project in a certain country.