【Major Industrial Equipment in the Chemical Industry】104 – The first domestically produced long-distance pipeline compression unit for the West-East Gas Transmission Project

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The past decade has been a period of rapid development in China’s chemical industry, marked by the emergence of many new processes, products, and equipment. There has also been significant progress in China’s chemical processing equipment, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and localization of such equipment. We invite everyone to share their insights and engage in discussions, to cheer for Made in China and to support the development of chemical processing equipment! *********************************** The first domestically produced long-distance pipeline compression unit (H1156) designed as part of the Western China to Eastern China gas transmission project was shipped from the factory on July 19, once again marking the history of China’s domestic equipment manufacturing industry with the label \"manufactured by Shenyang Blower”. Pressure vessel plates played a crucial role in this achievement. The localization of compression units for long-distance pipelines is a **major and high-priority project that receives significant attention. The H1156 model, specifically the PCL803 variant, is a natural gas compression unit developed by Shenyang Gas Turbine Group for the Urumqi, Yongchang, and Guazhou stations along the western section of the West-East Gas Pipeline Project II; it will operate alongside units manufactured by the American company GE. High efficiency is one of the key parameters pursued in the design of pipeline compression units, and it also reflects the design standards of the industry internationally as well as competitive strength in the market. Through rigorous research and development as well as design verification, the overall test multiphase efficiency of the H1156 unit reaches 87.7%, while its operational efficiency under design conditions is 86.2% – figures that represent an internationally advanced level and enable it to compete with units from other countries in the same industry. During the test, SHENGU Group successfully carried out a trial run of the H1156 unit with a pump equipped with a shaft coupling for the first time, overcoming key challenges such as the high difficulty of the trial run and the complexity of the testing process. The test results show that all indicators fully meet the design technical requirements, with the maximum amplitude being only 14 μm, satisfying the standards for high-quality products. A few years ago, the workers at Shenmu Heavy Machinery collaborated with the American company GE to produce pipeline compression units. Rather than simply imitating others, they drew on external expertise to improve their own capabilities; by adapting and innovating upon the technologies introduced, they gained the ability to develop, design, and manufacture such units on their own. A range of new patents and technologies, including those related to pressure vessel steel plates, low-temperature steel plates, and boiler plates, were also applied to the H1156 units. After passing the trial operation tests, the H1156 unit, carrying the aspirations of the SHENGU team to equip China with advanced equipment as well as their firm commitment to CNPC to achieve world-class design and manufacturing standards, was sent to the compressor station sites to compete with foreign units, and to prove its ability to operate safely, reliably, and continuously over long periods in harsh conditions.