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The overall framework design of the Shaanxi Beijing gas pipeline from "automatic distribution" to "intelligent distribution" Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （241）            Knowledge map    Save Natural gas distribution control technology is key to ensuring the safe, smooth, and efficient operation of oil and gas pipelines. Under the background of digital transformation, the construction of smart pipeline networks provides strong support for the updating and upgrading traditional automatic distribution control technology. The research status of automatic distribution control technology is introduced based on briefly describing the concept of a smart pipeline network. The principle and main methods of the ShanJing pipeline distribution control technology were elaborated based on the actual site conditions. In response to the shortcomings of the current automatic distribution control technology for the Shanjing pipeline, a plan has been proposed to transform from "automatic distribution" to "intelligent distribution" around the perception layer, control layer, and maintenance layer, providing a solution for improving the construction of smart oil and gas pipeline networks and the development of automatic distribution. Related Articles | Metrics

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Analysis and Corresponding Measures of Two interlocking actions in Ethylene Cracked Furnace Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （176）            Knowledge map    Save Related Articles | Metrics

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The design and implementation of a fully automated intelligent water quality analysis system throughout the entire process Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （1）            Knowledge map    Save The traditional water quality analysis laboratory is highly dependent on manual operation, and has some problems such as low detection and analysis efficiency, high safety risk and poor experimental stability. Based on the above problems, a whole process unmanned water quality intelligent analysis system is designed, and the working process, hardware and software Settings of the intelligent analysis system are introduced. The application of the system has realized the automatic analysis of COD (chemical oxygen demand), pH, conductivity, ammonia nitrogen, total nitrogen and other items in the water quality, replacing manual analysis more than 120,000 times a year, and realizing sample separation and delivery according to the single maximum sample flux. Complete the analysis and data upload LIMS (Laboratory Information Management System) system within 3 hours, greatly shortening the experiment cycle. The application of this system provides a reference for various enterprises in the laboratory automation and intelligent construction. Related Articles | Metrics

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Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （1）            Knowledge map    Save Related Articles | Metrics

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Design and Application of Analyzer Management and Data Acquisition System for Large-Scale Refining and Petrochemical Integration Projects Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save In large-scale integrated refining and chemical projects, the challenges of managing numerous online analyzers and the high maintenance costs are faced. In order to achieve the goal of digitalization and intelligent management of online analyzers in petrochemical enterprises, this paper conducts research on the design of an analyzer management and data acquisition system(AMADAS), which is based on the requirements of a certain integrated refining and chemical project. The network architecture and functional design of the system have been deeply analyzed. After the actual application of the system, enterprise instrument engineers can achieve remote monitoring and maintenance of the online analyzers through the central control room or the engineer stations of each device, and the practical experience of the system has been summarized. Finally, the direction for continuous optimization of the system is outlined. Related Articles | Metrics

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Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Investment Analysis of Bus Control System Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Research on optimization technology of combustible gas sensor layout in oil and gas station Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Abstract: In order to effectively predict combustible gas leakage in oil and gas station, a scientific, reasonable and economical gas sensor layout scheme was developed. Based on the fusion of the leakage source parameter set and the wind field parameter set, the number of scenarios corresponding to the cumulative leakage probability of 90% was defined as typical scenarios to replace all leakage scenarios. Combined with numerical simulation, the diffusion range and harm area of combustible gas in the station were determined, and the sensor layout schemes of different equipment and stations were optimized through regional block division. The results show that 1320 leakage scenes corresponding to 44 main equipment in the original station and yard can be reduced to 542 by screening, and the number of scenes is reduced by 58.9%, which greatly reduces the difficulty of subsequent calculation. The station requires 45 sensors to ensure coverage of high-risk leakage areas while reducing sensor redundancy. The research results can provide practical reference for the emergency warning of oil and gas station leakage accidents. Related Articles | Metrics

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Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Discussion on the Design of Natural Gas Flow Measurement Calibration Process under Complex Gas Source Conditions Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save This paper examines the simulated water calculation of gas source pressure and flow at a bypass calibration station on a ring natural gas pipeline network, and proposes operational conditions for the pipeline network to comply with calibration regulations；Simultaneously, we propose technical measures to enhance the precision of flowmeter calibration outcomes and provide recommendations for site selection, design, and operation of analogous bypass calibration stations. Related Articles | Metrics

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Design of an automatic safety risk identification system for offshore drilling and completion operations based on computer vision Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Video surveillance on offshore platforms plays a significant role in safety monitoring and accident investigation during drilling and completion operations. Currently, the video surveillance systems on offshore platforms primarily rely on manual observation for safety monitoring and analysis, which leads to issues such as inadequate continuous monitoring, insufficient early warning capabilities, and high labor costs. To address these problems, this study proposes a machine vision-based framework for automatic identification of safety risks in offshore drilling and completion operations. The study utilizes rotation detection techniques to ensure accurate results even in tilted equipment conditions. Additionally, by incorporating object tracking technology, the system enables tracking and distance measurement of personnel and equipment, thus effectively monitoring the operational status of offshore platforms in complex environments. The proposed system was deployed and tested on a specific offshore platform, achieving an accuracy rate of over 90% for all algorithms employed. This significantly enhances the safety and efficiency of drilling and completion operations, reduces potential hazards and safety incidents, and makes a valuable contribution to improving the safety, efficiency, and management level of offshore drilling and completion operations. Related Articles | Metrics

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Several implementation methods and applicability analysis for the partial stroke test function of the emergency shutdown valve Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save With the continuous enhancement of petrochemical industry security awareness, the requirements of different local governments for the interlocking evaluation of some major risk sources have also been continuously improved. In the SIL verification stage of the project, there are cases where the verification results do not meet the SIL classification requirements. In order to avoid adding extra independent protective layers to reduce the SIL evaluation level with high cost, the emergency shutdown valve partial stroke test has attracted more and more attention as an effective means to shorten the detection period and improve the detection coverage. This article introduces the origin and specific requirements of the partial stroke test function of the emergency shutdown valve. Three categories with six different forms of implementation methods and some products on the market are thoroughly described. This article made a detailed analysis for the partial stroke test function with practical application, and also made a comprehensive comparison in terms of economy, availability and security. The test plan of airway design with moderate cost and most wide applicability is recommended. Related Articles | Metrics

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Analysis of the influence of oxygen flow temperature and pressure compensation on the chemical efficiency of ethylene oxide unit Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Oxygen is the main reaction material in ethylene oxide unit, and it is also an important calculation factor involved in the selectivity of ethylene oxide unit, and its measurement accuracy directly affects the judgment of catalyst selectivity. In this paper, two methods of calculating catalyst selectivity in ethylene oxide plant using analytical instrument and ethylene/oxygen mass flow rate were introduced, and the reasons for the large error in calculating catalyst selectivity with the latter were found out. The reasons for the error in the temperature and pressure compensation formula of oxygen flow rate were determined. After correction, the two selectivity calculation methods showed similar amplitude and trend. It is proved that the two methods have good reference significance in calculating catalyst selectivity. Related Articles | Metrics

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Application of OCS in Synthetic Ammonia Urea Production Project Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Synthetic ammonia and urea are important fertilizers and industrial raw materials with extensive applications in modern agriculture and chemical industry. In traditional ammonia urea production projects, DCS systems based on copper core cables are generally used as signal transmission media. However, the use of copper core cables makes signal interaction between the control system and the device area susceptible to interference from external electrical signals, and the cost of copper core cables is high. This traditional approach will significantly increase the project cost and spare parts cost for users, affecting the rapid delivery of the project. This article combines industrial optical bus technology with synthetic ammonia urea production projects, which can not only solve the problem of interference in copper core cable signal transmission, but also significantly reduce the installation cost of control systems, save time, and improve the reliability and stability of system operation in synthetic ammonia urea production projects. Related Articles | Metrics

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On the Hazards and Governance Measures of Single Point Safety Interlocking Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Abstract：The interlocking protection system is an important equipment to ensure the smooth operation of the device. Single point interlocking refers to the instrument function where one measuring instrument or a pair of contacts can trigger interlocking action. This article analyzes the main reasons for the serious consequences caused by multiple single point interlocking fault cases. Through induction and summary, it is found that the problems mainly focus on shared instrument pressure points, shared system cards, inadequate instrument maintenance, failure to do seasonal maintenance work, and failure to replace expired equipment according to its service life. And explore and develop single point interlocking governance and rectification plans one by one based on the causes of the case. Through single point interlocking governance, the reliability of the interlocking protection system will be comprehensively improved in terms of source design, compliance rectification, daily maintenance, etc., to ensure the smooth operation of the device. Related Articles | Metrics

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Discussion on Long Cycle Operation of Instrument and Control System for Ethylene Cracking Gas Compressor Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Analysis and suggestions for unplanned shutdown caused by furnace pressure measurement in heater Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save With the large-scale development of petrochemicals, the application of heater with furnaces as heat sources is becoming increasingly used. This article study and research on the reasons for the frequent abnormal working conditions of "furnace pressure interlocking", and issued some solutions and suggestions from different perspectives to prevent unnecessary spurious trip and unplanned shutdown caused of process unit by furnace pressure Related Articles | Metrics

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Research on the Modbus RTU communication between Honeywell and Hollysys distributed control system Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save PetroChina Jinzhou Petrochemical Company has carried out the work of interconnecting data between various upstream and downstream devices. It requires different brands and models of DCS control systems to communicate with Hollysys MACS 6 control system through Modbus RTU protocol. As the actual work progresses, it is found that only the Honeywell PKS control system could not write data to the Hollysys system. In response to this phenomenon, a deep analysis of the basic principles of Modbus RTU communication protocol was conducted, and a method of studying Modbus RTU communication messages was adopted to analyze the differences between the two systems' messages. By adjusting the configuration of the Honeywell and Hollysys systems, the structure of the messages was made consistent. After connecting the Honeywell and Hollysys systems, it was found that the data from the Honeywell system can be successfully written out, thus solving the last problem in the interconnection project. Related Articles | Metrics

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Research on Electromagnetic compatibility of control system in Petrochemical Plant Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save The electromagnetic compatibility of SH 3092-2013 "Design specification for distributed control system in petrochemical industry" requires that DCS equipment does not cause bad electromagnetic interference in other equipment, nor will it be excessively sensitive to external electromagnetic interference. This article uses the concept of electromagnetic compatibility, sorts out the emission requirements and anti-interference requirements of electromagnetic compatibility of the control system, puts forward the electromagnetic protection measures of the distributed control system, and summarizes the electromagnetic compatibility design points of the petrochemical plant control system, which is conducive to engineering design and application of Electromagnetic Compatibility. Related Articles | Metrics

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Research on the Relationship between the Transient Control Performance of Natural Gas Automatic Distribution System with the Parameters of Connecting Pipeline Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save With the development of automation and intelligent technology, natural gas distributing stations are gradually popularized for automatic control systems. In this article, the types of gas users in a certain natural gas pipeline company are first studied. Three types of classic users are selected, and their data such as gas components, distribution pressure, and flow rate of each type user are collected as the basis of modeling. Furthermore, the mathematical models of the main devices in the automatic control system are analyzed, thus establishing the relationship between the structural parameters of the connection pipeline and the transient control performance indicators of the automatic control system. By comparison, it is found that the diameter and length of the connection pipeline have a significant impact on the transient control performance of the automatic system. There are critical pipe diameter and critical length, before and after which the transient performance indicators of the automatic control system have different trends. Related Articles | Metrics

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Discussion on the Current Status and Development Direction of Fracturing Unit Control Technology Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save The control technology level of the fracturing unit directly determines the quality and efficiency of the fracturing operation. For this purpose, the author conducted research on the technological progress and application status of fracturing unit control systems from mainstream domestic and foreign manufacturers. They compared the level of single machine equipment control and centralized intelligent control of units from various manufacturers, and analyzed the main problems that currently hinder the intelligent development of fracturing unit control systems. The conclusion indicates that there is no significant difference in the control technology of domestic fracturing units compared to similar foreign manufacturers; The overall field is developing towards electrification, hybridization, wireless, visualization, and intelligence. We can start from the aspects of technology, management, and personnel to jointly promote the improvement of China's fracturing unit control technology and meet the needs of unconventional oil and gas high-efficiency and high-quality development. Related Articles | Metrics

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Design and application of a dual robot batching robot system Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save In today's society, the application of robots is gradually moving from experimentation to application, from component based unit applications to systematic applications. This is an inevitable trend in technological development and the inevitable path to achieving Industry 4.0; This project is based on the collection of two or more robots with multiple tasks and systems, combined with technologies such as microcontroller programming and PLC programming, to achieve a robot system where multiple robots cooperate, coordinate, and unify to complete a task; This article discusses in detail the importance, working principle, application fields, and their impact on production efficiency and quality of the dual robot batching system in modern industry. Through in-depth analysis of the system, its broad prospects and potential in future industrial development have been revealed. Related Articles | Metrics

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Practice of IoT Technology in the Construction of Intelligent Offshore Oil Fields Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save The implementation of intelligent oil fields using Internet of Things (IoT) technology has been a major research and application focus in recent years. In the construction project of the QHD32-6 intelligent oil field, IoT technology was introduced and extensively studied and applied. supOS is an industrial operating system software focused on achieving intelligence in the Process Automation (PA) layer for industrial enterprises, and after industry-specific transformation and development, it can be applied to the realization of IoT in offshore oil fields. This paper provides an overall introduction on how to utilize supOS as an IoT platform for real-time data collection and application development, with the hope of offering some reference significance for the intelligent construction of other oil fields. Related Articles | Metrics

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Research on Natural Gas Pipeline Inspection System Based on Drones Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save The National Development and Reform Commission and the National Energy Administration have released the "Medium - and Long Term Oil and Gas Pipeline Network Plan", which states that by 2025, the scale of the national oil and gas pipeline network will reach 240000 kilometers. During the inspection process of long-distance natural gas pipelines, there are often problems such as complex terrain, long inspection distances, heavy workload, low efficiency of walking inspections, high costs, inability to quickly reach designated locations in case of emergencies, severe personnel aging, and high management costs. With the increasing mileage of natural gas pipelines year by year, the challenges faced by pipeline inspections will become increasingly severe. This article focuses on the problems encountered during the inspection of natural gas pipelines, and combines drone flight, leak detection technology, surface micro deformation detection technology, image recognition technology, communication technology, etc. to develop a comprehensive management platform for natural gas pipeline inspection based on drones. It realizes the full process management of drone inspection and verifies the feasibility of the comprehensive management platform through on-site application. Related Articles | Metrics

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Discussion on The Application of SPI Design Verification Rule Setting Automation in Petro-Chemical Industry    2024, 60 (5): 0-0.   Abstract （0）            Knowledge map    Save Smart Plant Instrumentation (SPI) from Hexagon is a management tool for instrumentation design and full-cycle instrumentation based on public database and rule-driven. After years of development, SPI has been recognized as one of the most versatile software for instrumentation design and management in the industry, and is widely used in domestic and international engineering design fields such as oil and gas, chemical, nuclear and power generation, etc. SPI Rule Manager is an independent module in SPI software, which is mainly used for creating, executing, and managing data checking rules, to realize the design calibration function. Due to the different application environments at home and abroad, domestic engineering companies encountered many difficulties in applying SPI Rule Manager for data checking. To solve the above problems, SPI Expert Rule has been redeveloped and applied to integrate the standard specification and engineering experience into the SPI design check rule setting. This paper mainly introduces the application results of SPI Rule Manager and SPI Expert Rule. Related Articles | Metrics

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无 Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Research on the application of PIMS model in petrochemical enterprises Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Based on Aspen PIMS software, crude oil screening, device planning optimization, oil product blending, and economic analysis models are established. The functions of PIMS, the model establishment process and the company's application are introduced. Use the linear programming and recursive technology of PIMS to solve the profit-optimal solution for factory production, and finally present it to business managers in the form of a spreadsheet. Related Articles | Metrics

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Research on surge line estimation and anti surge line control optimization of synthetic gas compressor Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save The synthetic gas compressor is the core dynamic equipment of the synthesis plant. Whether its operation energy consumption can reach the design ideal state is affected by many factors, such as the deviation between the composition of the compression medium and the design, the influence of the pipe network resistance, the large deviation between the configuration parameters of the surge line and the given parameters of the unit performance curve, and the excessive surge margin of the unit make the unit operate near the anti surge line, It is necessary to check and compare the configuration data of the unit surge line and optimize the control of the anti surge line. On the premise of ensuring the stable and safe operation of the unit, through the calculation of the surge line data and the evaluation and optimization of the surge control program, the operation of the unit can be improved The reduction of energy consumption has far-reaching significance in operation cost and environmental protection, and provides reference for energy-saving optimization of compressor. Related Articles | Metrics

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Exploration of factors affecting the calibration results of oil depot flow meters Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Based on the daily calibration work of flow meters in oil depots, this paper analyzes the condition of standard meters, whether to connect the oil gas recovery pipe during calibration, the inaccuracy of temperature measurement, and the impact of flow meter calibration points on the calibration results, according to the "Verification Regulation of Liquid Volume Flow Meter" (JJG-2010) suggestions are proposed. Related Articles | Metrics

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WebGIS based integrated retrieval method for oil and gas exploration and development data Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Discussion on design of flowmeter for pilot plant Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save The development of the petrochemical industry has entered a new era, the research and application of new technologies and new processes have become the focus of attention, and more and more pilot plants are being built. Due to the small production scale and low product output, the process material flow and process pipe size of the pilot plant are very small compared with the conventional industrial plant, which brings certain difficulties to the design and selection of the flowmeter. Based on the research of a polyolefin pilot plant, through the design practice of the engineering project, the design and selection ideas for measuring small flow conditions were summarized. The application occasions of several types of common flowmeters were obtained, and the selection suggestions were put forward to provide ideas for forming standardized design. Related Articles | Metrics

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Discussion on the Application of Electronic Marshalling Control System Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save In recent years, with the development of technology in the petrochemical industry, the requirements for investment cost, construction cycle, maintainability and intelligence are also getting higher and higher. In order to comply with this trend, the control system vender has introduced the electronic marshalling technology of general IO combined with local IO cabinet, replacing the traditional analog or digital cable with the optical fiber signal transmission channel in the system, and then realizing "light into copper back", which has greater advantages than the traditional wiring method. However, the relevant industry standard specifications do not have specific provisions for this new technology, resulting in different understandings among different designers. In view of this problem, combined with the actual project implementation experience, the signal design, layout design, power supply design, grounding design and other aspects are discussed, which has certain reference significance for the promotion and application of electronic wiring technology. Related Articles | Metrics

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Special Requirements to Cryogenic Instrument Valves Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Abstract: Since the Cryogenic instrument valves always operate in severe cryogenic services, there are a lot of dedicated special requirements in valves fabrication and design area to ensure the functions in cryogenic service like the seat leakage rating, shell leakage rating etc.. There are many dedicated Cryogenic valve design and fabrication standards and codes in this area. The special requirements focus on valve type design, body &trim and the materials, bonnet &packing, Cryogenic test, fire proofing, painting, position indicator, spare parts, anti-static etc.. The foreign LNG projects special requirements to Cryogenic valves are introduced in this article. The special technical characteristics to the main Cryogenic valve vendors in home and aboard are analyzed. The differences have been listed. The promotion to the quality of the domestic valve vendor is expected and the nationalization to the area can be greatly accelerated. Related Articles | Metrics

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Application of Petroleum Data Governance in Collaborative Research of Exploration and Development Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Related Articles | Metrics

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Bayesian Network Based Fault Diagnosis Method for Drilling site data collector Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save This paper presents a fault diagnosis method of drilling data collector based on Bayesian networks, and a Bayesian network prediction method for drilling data collector faults is proposed. Firstly, using correlation function analysis (CF) and prior knowledge to determine fault nodes and causal relationships, preliminary constructing a BN structure.Next using the K2 learning algorithm and EM algorithm to optimize the structure and learn parameters of BN. Validate the obtained drilling data collector model with historical data. On the basis of fault diagnosis, multiple factors affecting the failure of drilling data collectors are comprehensively considered, temperature and humidity are confirmed as the influencing factors of equipment failure. A Bayesian network prediction model for drilling data collectors is established, and the mechanism of collector failure influence is simulated and analyzed. Related Articles | Metrics

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Research on risk assessment of wellhead tree based on Bayesian network Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Abstract: In order to reduce the possibility of tree failure during service and ensure the normal and safe production of oil field. On the basis of building the failure tree model of the tree, the transformation of the failure tree model to the Bayesian network model is realized through the transformation relationship. Based on the analytic hierarchy process and fuzzy set theory, the prior probability of the root node is solved. By defining the time variation characteristics of the relevant nodes, the change of the failure probability of the tree at different times is obtained. The results show that the probability of tree failure is 1.24×10-2, in which the valve leakage is the highest, followed by flange leakage. The calculated results are consistent with the actual situation. Medium corrosion, fluid containing impurities, erosion corrosion, nut loosening and disc deformation are the main factors leading to tree failure, which should be paid attention to in field management. With the extension of time, the failure probability of tree increases slowly at first and then rapidly, and the risk of one-year tree increases sharply. Related Articles | Metrics

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Analysis of Key Technologies of Long-distance Pipeline Leakage Detection Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save The safety of long-distance pipeline operation is increasingly receiving attention from the country and the public, and the requirements for detecting small leaks and location accuracy are becoming higher and higher. It is necessary to develop efficient and accurate leak detection technologies. Introduced the classification method of pipeline leakage detection technology. Focusing on negative pressure wave method, infrasound wave method, distributed fiber optic detection technology, in-line inspection technology, and detection methods based on software/algorithm models, the detection characteristics, applicable scope, and engineering applications of each detection technology were elaborated. Based on the comprehensive evaluation indicators of pipeline leakage detection technology proposed in the American standard API RP 1175-2015 "Pipeline Leakage Management Procedure", the selection principles of existing pipeline leakage detection technologies are proposed. Finally, an analysis and outlook were conducted on the development trend and research focus of future pipeline leakage detection technology. Related Articles | Metrics

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Design and application of special period control logic of natural gas station automatic distribution based on user data Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save With the development of natural gas transmission and distribution pipeline system, the number of gas distribution users is increasing and the demand of gas supply is becoming more and more complex, the control logic of traditional gas distribution station can not meet the requirements of reasonable disposition and efficient utilization of natural gas. In order to construct the automatic transmission control logic and improve the efficiency and accuracy of transmission, this paper puts forward a transmission control logic based on the actual operation data of a station, based on user data to make up for the inhomogeneity coefficient method. The reliability of the special time-interval method is verified, and it is proved that the optimization rate of the special time-interval method is increased by more than 25% compared with that of the non-uniform coefficient method. Related Articles | Metrics

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Study on Deformation Monitoring Technology of Desert Buried Flexible Pipeline Based on Vibration Extraction Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save Aiming at the buried pipeline serving in the mobile sand dune area in the desert environment, facing the deformation problem that easily affects the normal operation of the pipeline, a desert buried pipeline deformation monitoring technology based on vibration extraction is proposed. First, analyze the deformation characteristics of the buried pipeline in the desert environment, and establish the finite element model of the buried pipeline in the desert; then perform the modal analysis of the curved pipeline under the action of fluid-solid coupling based on ANSYS; finally, use the distributed optical fiber sensing technology to collect the pipeline bending Abnormal vibration signal at deformation and deformation. The research results show that when the buried pipeline is bent and deformed due to the displacement of sand dunes, the internal fluid will couple with the pipe body at the bending deformation and cause abnormal vibration there. The abnormal vibration can be realized by collecting the abnormal signal through distributed optical fiber sensing technology. Monitoring, combining feature extraction and support vector machine can realize pipeline deformation monitoring. Related Articles | Metrics

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Development of CO2 emission calculation system for process simulation Automation in Petro-Chemical Industry    2024, 60 (4): 0-0.   Abstract （0）            Knowledge map    Save A CO2 emission calculation system with full process material flow and thermal flow has been developed based on domestic chemical process simulation software. Firstly, the mathematical models of CO2 emission of full process material flow and thermal flow and the solution steps were established, then the CO2 emission calculation system was developed by using object-oriented C++ language and COM middleware technology, and finally the accuracy of module calculation was checked by using the actual data of two units of styrene ethylbenzene separation and cracked gasoline hydrogenation. The results showed that the average relative deviations (ARD) of the CO2 emission calculation results were 0.38% and 0.06%, respectively, and the simulation results match well with the actual industrial values, which indicated that the established CO2 emission calculation system was stable and reliable, and will play an important guiding role in the simulation calculation of CO2 emission processes in chemical processes. Related Articles | Metrics