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● ● Question: In the construction of stations, bolt connection is commonly used for pipeline installation, and this process relies mainly on manual labor, which leads to issues such as large operational errors and low efficiency. Furthermore, the safe and stable operation imposes strict quality requirements on all connection points, especially bolted connections; a low pass rate can lead to issues such as structural loosening and component detachment, which affect the proper functioning of the facility. ● Innovation: Jianghan Oil Construction Company, a company involved in oil field engineering construction, collaborated with equipment manufacturers to conduct technical research and experiments. By integrating advanced automation equipment and systems, as well as employing sensor technology, control algorithms, and robotics, they developed intelligent bolt connection devices. This enabled the automation, precision, and intelligence of the bolt tightening process, thereby improving production efficiency and product quality. ● As a result, during the construction at Jiaozhou Station and Zhangqiu East Distribution Station, the success rate of intelligent bolt connections was 100%, operation efficiency increased by 30%, and the traceability of construction data reached 100%, providing a reliable guarantee for the long-term safe operation of petrochemical equipment. Zhang Long: \"All 1,328 bolt connections here were made using smart torque wrenches. The pipeline equipment passed the pressure testing successfully without any leaks, with a 100% pass rate from the first attempt.\" ”On February 6, Zeng Xiangyun, the technical supervisor of the Jiqing Pipeline project at Jianghan Oil Construction Company, which is part of the Petroleum Engineering Construction Corporation, introduced to reporters the intelligent torque wrenches used at the Zhangqiu East distribution station of the Jiqing Pipeline, which is operated by Shandong Pipeline Company under the Natural Gas Branch. At the beginning of last year, after a station was installed, pressure testing was carried out; several flange connections failed the test due to uneven bolt tightening. The bolt connection process relies mainly on manual labor. Zeng Xiangyun found that when bolts are tightened using manual, non-precision bolt tightening tools, issues such as excessive force causing damage to the bolt threads and insufficient force resulting in torque values that do not meet the requirements arise. For the safe and stable operation of the station, strict quality requirements are imposed on various connection points such as valves and flanges; if the quality of bolt connections is poor, it may lead to structural loosening and component detachment, thereby affecting the station’s functionality. To address this issue, Zeng Xiangyun organized technical, quality, and production staff to form a task force. In collaboration with an equipment manufacturer in Qingdao, they carried out research and application of intelligent bolt connection techniques, and conducted field tests at the Jiaozhou station of Shandong Pipeline Company. The operator used a smart torque wrench to carry out the task, and a bolt was quickly tightened onto the valve flange. As the data displayed on the computer beside him reached the designed torque value and a confirmation sound was emitted, the operator stopped using the smart torque wrench. Over a period of more than two months, the task force gradually improved the intelligent bolt connection equipment and related process parameters by introducing sensor technology, control algorithms, and robotics into the experiments. “During the pressure testing, tension was present throughout the whole process. ”Zeng Xiangyun recalled, “But fortunately, this technological achievement has withstood the test of practice.” ”During the construction at Jiaozhou Station and Zhangqiu East Distribution Station, the success rate of intelligent bolt connections was 100% from the first attempt, and operational efficiency increased by 30%. This laid a solid foundation for ensuring that the key stations necessary for maintaining a safe and stable gas supply in the Qingdao and Yantai areas during winter could be completed on schedule. It is reported that intelligent bolt connection equipment also enables the tracking of construction and production data, providing a reliable guarantee for the long-term safe operation of petrochemical equipment. The task force also added explosion-proof features to the intelligent bolt connection equipment in order to meet the safety management requirements of the facilities ； A demolition function has been added; in the demolition work carried out in the old process area of the Zhangqiu East transfer station, what used to take 10 days to accomplish manually – namely removing the bolts – was completed in just two days thanks to the use of intelligent torque wrenches.