Table of Content

25 February 2023, Volume 50 Issue 2 Previous Issue    Next Issue

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Management & Innovation

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Strategy for Introducing Foreign Intelligence Based on New Development Orientation of Tianjin XU Xin, HUO Da 2023, 50 (2):  1-4.  Abstract ( 443 )   Save “Foreign intelligence” is an indispensable part of the talent team. The introduction of foreign intelligence is a complex social system project,which needs not only a good social and economic atmosphere and a stable international political environment,but also a perfect guarantee of laws and regulations,a certain scale of capital investment,and the joint support of all social forces. Combined with the present situation of Tianjin’s economic and social development,this paper puts forward suggestions on introducing foreign intelligence,giving full play to the role of human resources,and making good use of foreign talents. By actively participating in international cooperation and exchange and introducing overseas high-level talents with advanced technology,foreign talents will have a new role in the all-round revitalization of Tianjin to help the development of Tianjin. References | Related Articles | Metrics

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Research on Problems and Countermeasures of Integration of Artificial Intelligence and Traditional Manufacturing Industry in Tianjin QI Xugao, YANG Ye, LYU Bo 2023, 50 (2):  5-8.  Abstract ( 437 )   Save The integrated development of artificial intelligence and traditional manufacturing industry is an important opportunity for the optimization and upgrading of Tianjin’s traditional manufacturing industry,and an important part of Tianjin’s strategy to deepen the implementation of the city’s manufacturing industry. On the basis of in-depth analysis of the connotation of the integration development of artificial intelligence and traditional manufacturing industry,this paper summarizes the problems faced by Tianjin in promoting the integration development of artificial intelligence and traditional manufacturing industry,put forward suggestions on promoting the construction and application of intelligent manufacturing capability maturity model standards,enriching the whole process application scenarios of artificial intelligence in traditional manufacturing enterprises,cultivating and expanding the team of intelligent manufacturing system solution providers,and strengthening the digital management capabilities of traditional manufacturing enterprises,with a view to providing reference for Tianjin to promote the integration of artificial intelligence and traditional manufacturing industry,and better support the high-quality development of Tianjin’s manufacturing industry. References | Related Articles | Metrics

Applied Technology

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Research on HSE Evaluation Management of Contractor Operation for Engineering Construction Projects ZHANG Chaoliang 2023, 50 (2):  9-12.  Abstract ( 467 )   Save How to effectively integrate the management of operation contractors into the management system of Party A to form an effective joint management situation and provide good support for the HSE effect of the overall operation is of high practical significance in the current field of contractor management. Taking a construction project in engineering practice as an example,this paper comprehensively analyzes how to effectively integrate the current management concepts and management tools into the operation of external contractors to form a complete and flawless HSE management system for the operation project. To achieve this goal,the short-term and mid-term and long-term HSE evaluation management of contractor operations is discussed from the aspects of contractor’s overall access,rating and dynamic update of information storage. References | Related Articles | Metrics

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Vector Control of Brushless DC Motor Based on Sliding Mode Control and Optimal Current Vector BIAN Zhenzhen, LI Fengsheng 2023, 50 (2):  13-15.  Abstract ( 444 )   Save The traditional brushless DC motor has some problems such as obvious startup shaking and large torque ripple. To solve these problems,the space vector pulse width modulation strategy is proposed,and the sliding mode control is used to replace the speed loop PI control,while the optimal current vector is injected into the q-axis current loop. By building the simulation model and analyzing the simulation results,it can be seen that compared with the traditional control strategy,the starting overshoot can be effectively reduced,the commutation torque ripple can be suppressed,and the dynamic response ability can be improved. References | Related Articles | Metrics

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Production Correction of Associated Gas in Offshore Oil Field and Its Significance CHEN Jia, LUO Yang, HU Hongliang 2023, 50 (2):  16-19.  Abstract ( 434 )   Save Offshore oil and gas fields generally use oil-gas metering separator to measure the associated gas of oil wells,but the natural gas production measured by this method often ignores the associated gas dissolved in crude oil. The upstream metering results are difficult to truly and effectively reflect the actual associated gas production,and there is a large error with the natural gas production received by the downstream terminal. In this case,the measurement result of associated gas is lower than the actual situation,and it is possible that the mixed transportation pipeline and production and treatment equipment exceed the design without knowing it,which has potential safety hazards. Through literature research,this paper obtains the relationship of natural gas solubility under different pressures and temperatures,calculates the solubility of associated natural gas in crude oil under the operating conditions of oil-gas metering separator,and then obtains the volume of associated natural gas dissolved in crude oil,and corrects the coefficient of associated natural gas production through the calculation results,so as to reflect the actual associated gas production more accurately. References | Related Articles | Metrics

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Research on Practice of Strengthening Information Network Security in Gas Enterprises DAI Hui 2023, 50 (2):  20-23.  Abstract ( 444 )   Save In order to clarify the close relationship between network security and the informatization practice of gas enterprises,taking the informatization network security reinforcement of a gas company as an example,this paper introduces the establishment and practice process of network security reinforcement scheme. By deploying the next generation firewall,Internet behavior management and core switching equipment at the entrance and exit of the external network through the dual machine hot standby mode,installing EDR on the global network equipment,deploying the security situation awareness platform SIP and security latent threat probe STA in the core network,and adding the log audit system,the stable operation of the network is ensured,the hidden dangers of network security are eliminated,and the network status and security threats are monitored in real time,so as to achieve the purpose of all-round reinforcement of the network. References | Related Articles | Metrics

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Study on Tensile Magnetic Memory Performance of Self-installed Wellhead Offshore Pipeline GU Wei 2023, 50 (2):  24-30.  Abstract ( 421 )   Save In order to study the variation of magnetic field signals on the surface of X80 steel during the fatigue tensile process of subsea pipelines transporting from self-installed wellhead platform under geomagnetic excitation,the fatigue tensile test of X80 steel samples under different loads was carried out using MTS810 250 fatigue tensile tester. During the experiment,the change of magnetic memory signal on the surface of the tensile samples was monitored by magnetic memory sensor,the fatigue failure of the samples was observed by hand-held microscope,and the fracture surface after fracture was analyzed by SEM. The results show that magnetic memory is sensitive to tensile fatigue damage,and a new testing parameter system of magnetic memory for X80 steel is proposed,in which the connecting line slope of the extremum of tangential signal and tangential gradient signal is taken as the characteristic value,it lays a foundation for the field application of magnetic memory testing method. References | Related Articles | Metrics

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Application of Boundary Detection Tools in Development of Bottom Water and Heavy Oil Reservoir FAN Kai, WANG Haitao, XU Lifan, YIN Xiaochen, YANG Xiaojie 2023, 50 (2):  31-33.  Abstract ( 451 )   Save The heavy oil reservoir in a certain block of Nanpu Oilfield has a large lateral development change and belongs to bottom water reservoir. In addition,affected by the early development,the oil-water system is also more complex. In order to ensure the reservoir development effect and realize the near-top water-avoidance drilling and maximize the reservoir development benefit,the reservoir knowledge is updated in real time during the operation implementation process. By making full use of the advantages of rotary steerable system and boundary detection tools,the effective control of the well trajectory is achieved,and real-time logging data are obtained,which lays a solid foundation for achieving the long-term,efficient and stable development of heavy oil reservoirs and obtains good economic benefits. References | Related Articles | Metrics

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Optimization and Implementation of Degassing Process for Associated Gas in Water Source Wells on Offshore Platforms ZHOU Jiuli 2023, 50 (2):  34-37.  Abstract ( 468 )   Save The water source well of an offshore platform carries a large amount of associated gas during the production process. Since the water treatment system of the platform water source well is not equipped with a degassing device,when the water source well operates at a high frequency,a large amount of associated gas flows into the downstream production equipment. The on-site inclined plate oil skimmer cannot meet the gas treatment and discharge requirements,resulting in partial floor leakage and natural gas overflow from the open-drain breathing port,which brings serious hidden dangers to safety production and also restricts the water supply efficiency of the water source well. It is urgent to study the water treatment process to explore solutions to high gas content in water source wells on offshore platforms. By analyzing the degassing characteristics of the water source well,combined with the existing conditions of the platform,a set of efficient and reliable water source well water degassing device is designed,which realizes the purification of the water source and the recovery of associated natural gas,which provides technical support for the safe and stable operation of the offshore platform. At the same time,the associated gas from the water source well is effectively recovered, creating additional value for the platform. References | Related Articles | Metrics

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Design and Application of Centralized Circulating Cooling Water System for a Condensate Gas Field Platform in Bohai Sea HOU Chenguang, WANG Weiming, WU Lei, ZHONG Xiaoxia 2023, 50 (2):  38-41.  Abstract ( 412 )   Save Cooling water system is one of the important public systems of offshore oil and gas field platforms. At present, the cooling water system of oil and gas field platforms in Bohai Sea generally adopts seawater direct cooling technology. In order to deal with the problems of corrosion of equipment and blockage of marine organisms,and improve the stability of cooling water system,a stable and efficient centralized circulating cooling water system is proposed. This paper mainly introduces the design scheme of centralized circulating cooling system and the first application in the development project of a condensate gas field in Bohai Sea,in order to provide reference for the subsequent design of cooling water system for offshore oil and gas field platforms. References | Related Articles | Metrics

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Research on Active Safety Test System Based on C-NCAP JIANG Xiongliren, XIAO Guangyu, ZHANG Shuai, YANG Xinpeng, LIU Hanyu 2023, 50 (2):  42-44.  Abstract ( 480 )   Save The development of active safety test technology is inseparable from the support of testing equipment. Domestic active safety research institutions mostly rely on imported equipment to carry out relevant tests. However,imported equipment is often developed and designed based on foreign standards,which will be different from domestic standards and regulations,affecting the efficiency and quality of testing. Through the research on the active safety test system based on C-NCAP,this paper analyzes the research status of the active safety test system,the active safety test scenario of C-NCAP,the composition mechanism,software composition structure and hardware composition structure of the active safety test system,so as to provide some reference value for the improvement of domestic active safety test system technology. References | Related Articles | Metrics

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Practice of Non-stop Production Cleaning of Crude Oil Storage Tanks on Offshore Production and Storage Platforms LU Xudong, LYU Fayang, XIAN Shenping, WANG Song, LI Lei 2023, 50 (2):  45-48.  Abstract ( 421 )   Save In order to reduce the production loss caused by production shutdown during the cleaning and internal inspection of crude oil storage tanks,an offshore production and storage platform（P platform） uses a leased mobile test production platform（H ship） as a temporary production and storage facility. Through production process optimization and operational risk analysis,the production process and instrument control logic of the P platform and H ship have been upgraded,realizing non-stop production operations. The platform adopts a systematic management method,takes oilfield rescue and escape capabilities,safety and environmental protection requirements,and material supply cycles as constraints,and uses Gantt charts to control the operation process,achieving the completion of all operations 12 days in advance. References | Related Articles | Metrics

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Application of Distributed Photovoltaic Power Generation System in Small Sewage Treatment Plants LI Meiyan, PENG Jianxiong, YANG Zhuo, GENG Lixin, SHEN Yanping, CHEN Xiaoqi 2023, 50 (2):  49-53.  Abstract ( 441 )   Save The design and operation of 338.58 kWp photovoltaic power generation system in a small sewage treatment plant is introduced. The photovoltaic module of the distributed photovoltaic power generation system is erected above the active sand filter,chlorine dioxide disinfection tank and hydrolysis acidification tank. Since the grid connected power generation on December 17,2021,the operation has been stable,and the actual daily average power generation capacity is 965.37 kW•h,higher than the predicted daily average power generation capacity（871 kW•h）. Compared with thermal power with the same power generation capacity,it is estimated that about 2 861 tons of standard coal can be saved and 7 620 tons of carbon dioxide can be reduced accumulatively in 25 years. The estimated annual income of the project is 296 500 yuan and the static payback period is 5.83 years. The installation of photovoltaic power generation system not only meets the power supply of the sewage treatment plant during the peak period of power consumption,but also controls the massive reproduction of algae to a certain extent,which has good economic and environmental benefits. References | Related Articles | Metrics

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Electric Parameter Remote Transmission and Central Control Transformation of Crude Oil Export Pump TIAN Fusheng, WANG Aimin, GUO Jiqiang 2023, 50 (2):  54-57.  Abstract ( 464 )   Save Crude oil export pump is the key equipment of offshore oil production platform. The stable operation of export pump plays an important role in the stable production of oil field. During daily startup and use,it is more and more inconvenient to grasp the degree of startup and monitoring during use because the field and central control cannot view theelectrical parameters of the export pump. From the deep level,the central control of the platform cannot effectively and timely monitor the parameter changes of key and important equipment. There are also hidden dangers in equipment operationand the failure rate of equipment increases. The multi-function meter was selected to transform the medium pressure plate equipment,and the remote transmission and central control display of the electrical parameters of the crude oil export pump was realized, and the problem that the central control cannot view the electrical parameters of the export pump was solved. References | Related Articles | Metrics

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Optimization and Transformation of Gas Turbine Intake System of Offshore Platform YAO Zhongkun, AN Chao, LIU Zhenqing 2023, 50 (2):  58-61.  Abstract ( 463 )   Save In view of the high humidity and salinity sea air conditions faced by the two GE PGT25+SAC aeroderivative high-efficiency turbines in Bohai Central Platform,the inlet filter has poor filtering effect,which leads to the failure of turbine unit efficiency to achieve the set effect,and increases the filter replacement frequency and maintenance times. This paper discusses how to change the type and rebuild the structure of the inlet filters of two turbines,so as to improve the service efficiency of the turbine unit filters. This method has been applied to large units in many facilities in Bohai Oilfield,and achieved good application practice,achieving good results of improving the efficiency of turbine units and reducing the use cost of the overall filter. References | Related Articles | Metrics

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Application and Effect Analysis of Drag Reducer in Oilfield A in Southern Bohai Sea WANG Rui, DAI Qijia, FANG Gang 2023, 50 (2):  62-65.  Abstract ( 447 )   Save Field A in southern Bohai Sea is located at the region’s export hub and is responsible for transporting crude oil from all fields in the region and parts of Western Bohai Sea to terminal processing plants. The oil field is equipped with six export pumps,but the production of the new oil field,the measures of the old oil field and tapping the potential of the oil field make the pressure of crude oil transportation increase continuously,which seriously restricts the crude oil production in the whole region. In this case,through a series of studies and tests,drag reducer was injected into the crude oil transportation pipeline of oil field A,and the injection method of drag reducer was optimized and improved, which effectively increased the crude oil transportation volume under the same pipeline pressure,alleviated the transportation pressure,and it ensured the stability of oil transportation. It has certain reference significance for oil transportation of offshore oil fields. References | Related Articles | Metrics

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Design and Implementation of Query and Statistics Tool for Baodi District Early Warning Information Release Platform ZHANG Jiangbin, ZHANG Chunli 2023, 50 (2):  66-69.  Abstract ( 428 )   Save Tianjin public emergency early warning information release system（TJEWRS）is a very important comprehensive information release system in Tianjin,it is the total export of early warning information release authorized by governments at all levels,and forms a four-level interconnected early warning information release system with the national early warning release system（NEWRS）. Baodi District public emergency early warning information release platform（BDEWRP）,as the third level of the early warning release system,plays an important role in disaster prevention and mitigation and emergency management in the region under its jurisdiction. However,due to the early construction,the data statistics function is relatively simple,and with the continuous development of early warning release business,it can no longer meet the current data statistics needs. In order to facilitate the statistics of various early warning information release data of BDEWRP,BDEWRP query statistics tool was designed and developed based on TJEWRS database,so as to optimize business data statistics and reduce the workload of business personnel. This paper introduces the design purpose,significance,design idea,process and main query statistics algorithm of BDEWRP query statistics tool. References | Related Articles | Metrics

Science & Society

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80/20 Rule of Charging Piles and Its Enlightenment GUO Jingtao, ZHANG Qing, ZHANG Tao 2023, 50 (2):  70-72.  Abstract ( 435 )   Save The statistical data of four charging pile data collection platforms in Tianjin are given. The data show that the electric quantity distribution of the charging pile has long tail characteristics and power law characteristics of global and local self similarity. It is concluded that a few charging piles at the tail are extremely important and few charging piles at the head are paid attention to. The paper puts forward some suggestions that the distribution of measurement resources should focus on the tail and leave the head,and encourage diversified small-scale technology attempts and mode innovation by taking advantage of the low cost of trial and error at the head. References | Related Articles | Metrics

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Research on Prospect of Reclaimed Water Utilization in Economic Development Zone of Changsha City LIU Jieyuan, ZENG Tao, LI Zuogui, LUO Jun 2023, 50 (2):  73-76.  Abstract ( 427 )   Save In recent years,with the intensification of the global water crisis,reclaimed water, as a potential water resource, has received more and more attention. Based on the current situation of water resources,water pollution and reclaimed water reuse in Changsha Economic Development Zone,this paper analyzes the restrictive factors of reclaimed water reuse in Changsha Economic Development Zone,and quantitatively evaluates the development potential and benefits of reclaimed water reuse. The countermeasures and suggestions for the industrialization,standardization and large-scale construction of urban reclaimed water development and utilization are put forward from the aspects of engineering construction,technology and mechanism innovation,regulations and policy guarantees. References | Related Articles | Metrics

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Study on Seedling Raising and Planting Management Technology of Ginkgo Biloba in Shanxi Province GAO Feng 2023, 50 (2):  77-79.  Abstract ( 473 )   Save Ginkgo tree is a very common landscaping tree species in northern China. It has beautiful shape, leaves are light green in spring and summer and turns yellow in autumn. It is quite beautiful and can be used as garden trees and street trees. This paper analyzes the seedling raising technology of ginkgo tree from four aspects：land selection and preparation,seed selection and seed treatment,sowing and seedling management. On this basis,the cultivation and management techniques of ginkgo tree are analyzed from four aspects：digging planting holes,planting seedlings,tending management and pest control. In terms of pest control,two common diseases of ginkgo tree,ginkgo dry blight and ginkgo ultra-small leaf roller moth,are introduced,and specific control methods are given. References | Related Articles | Metrics

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Design and Research on Combined Industrial Circulating Cooling System YU Xuehua 2023, 50 (2):  80-82.  Abstract ( 466 )   Save By analyzing the water temperature and water demand,a set of combined industrial circulating water cooling system with closed cooling tower as the main cooling source and chiller,chilled water tank and plate heat exchanger as the auxiliary cold source is designed. Compared with the traditional circulating water cooling system,the combined system has the characteristics of energy saving and stable operation,and has high engineering application and promotion value. References | Related Articles | Metrics

Editor’s Voice

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Research and Development and Innovative Application of Online Version of China Pharmacy and Pharmaceutical Science Popularization Knowledge Platform under Trend of Digital Transformation ZOU Xiaoyong, LI Jin 2023, 50 (2):  83-87.  Abstract ( 432 )   Save The R & D and practical experience of the online version of China Pharmacy and pharmaceutical science popularization knowledge platform based on the resources of China Pharmacy are introduced to provide reference for promoting the deep integration of traditional publishing and digital services of scientific and technological journals,and further developing and utilizing the professional resources of scientific and technological journals and serving industry groups. The research and development background,application overview and research and development process of the online version of China Pharmacy and pharmaceutical science popularization knowledge platform are introduced,and its operation effect is evaluated. The platform has achieved remarkable results,playing a role of bridge and link between pharmaceutical professionals and the general public. At the same time,it has played a good role in improving the traditional media value and brand influence of China Pharmacy magazine. References | Related Articles | Metrics

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Difficulties and Promotion Strategies for Young Editors of Sci-tech Journals in Colleges and Universities LI Ru, LI Jin, ZHAO Yang, KONG Qian 2023, 50 (2):  88-91.  Abstract ( 460 )   Save The development of sci-tech journals published by colleges and universities is closely related to the quality of editorial work. Young editors,who were born in the 1980s and 1990s,are gradually becoming the new working force in editing and publishing. Their ability determines the quality of the editing work and thus the quality of academic journals in colleges and universities. Improving the competence of young editors is not only conducive to their own professional development,but also helpful to maintain sustainable development of academic journals. Therefore,in view of the difficulties encountered by young editors of academic journals in colleges and universities in the new era,and in combination with the current situation and characteristics of young editors of academic journals in colleges and universities,some suggestions are put forward in order to provide useful help for young editors to adapt to the work of editing journals in colleges and universities as soon as possible, and help young editors in colleges and universities to continuously improve their professional ability and take into account their own development in the process of growth. References | Related Articles | Metrics

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A Brief Discussion on the Influencing Factors and Quality Improvement Strategies for Review Work of Academic Journals ZHOU Cuiming 2023, 50 (2):  92-96.  Abstract ( 445 )   Save The quality of the journal is the core of the vitality of the journal,and the review work of the journal is one of the decisive factors of the journal quality. Journal editors should be proficient in discipline norms and corresponding terminology,strictly implement the“three review”system for quality control. Reviewers should strictly follow the reviewing principles while using appropriate reviewing skills,and have a high sense of responsibility to provide quality assurance for journal papers. This paper expounds and analyzes the problems existing in the review work of academic journals,points out the factors those affect the review work of academic journals,and discusses the strategies to improve the quality of review work for academic journals for learning and reference. References | Related Articles | Metrics