Table of Content

20 April 2016, Volume 52 Issue 2

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Development and Commentary

Instrument programming of the large petrochemical project

2016, 52(2):  0-0. 

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In the increasingly fierce market competition, petrochemical projects are becoming more and more large-scale, complex and integrated development, the project instrument programming are become inevitable. This article from the perspective of the development of instrument technology, analyzed the development course and the necessity of the project planning, and based on the successful experience of a large petrochemical project, describes the basic content and the attention of the instrument.

Engineering Design and Standards

Development Situation and Prospect of Domestic SCADA softeware in Gas Long-distance Transportation Pipeline

2016, 52(2):  0-0. 

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SCADA software is key component of SCADA system; foreign SCADA software monopolizes domestic long-distance gas transportation pipe market,and several disadvantages emerged.Meanwhile,domestic SCADA software achieve a great improvement and have got some application foundation;some domestic SCADA software are introduced as with their characteristic and applications.Compared with foreign software,advantages and disadvantages of domestic SCADA software are summarized.Considerations of choosing domestic SCADA software are given out.At laset,the future development trend of domestic SCADA software is also prospected.

Selection of Flow Meter Based on Fuzzy Decision

2016, 52(2):  0-0. 

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This paper makes a discussion on the selection of flow meter based on fuzzy decision. And an actual working condition in synthesis ammonia was validated by multilevel fuzzy comprehensive evaluation method. The results indicate that this method is reasonable and feasible. This method can provide decision basic for instrument engineers to select the suitable flow meter.

Analyse on American Tank Leakage Prevention Technique System

2016, 52(2):  0-0. 

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It was important to guarantee safe operation of large oil storage tank facilities. With high leakage risk, China commonly used extended service tanks. Applying advanced tank leakage inspection technique and adopt effective measures in early stage of tank leakage, can help to improve the safety and reliability of tank facilities. The paper introduced the advanced idea and recommended practice of American tank leakage prevention technique system, such as leakage prevention management system for tank and process pipeline and loading/unloading operation zone, and leakage prevention technique system for corrosion of tank outer side edge and tank bottom floor and tank wall - tank bottom seam cracking and settlement of tank bottom floor, and recommended by the most favorable environmental protection and the lowest cost of storage tank leakage prevention measures, such as the installation of RPB in the tank bottom. Finally, the suggestion of adoption of American standards to develop and improve domestic tank leakage technique were maded,

Process Control Technology

Analysis of process parameters and control systems about recondenser at LNG terminal

2016, 52(2):  0-0. 

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Recondenser is a core device of process operation at LNG terminal, its merits of control systems not only affects the stability of process operation at LNG terminal or not, but also determine the degree of difficulty of processing operations. Given its importance, the paper launched an analysis of recondenser process parameters and control systems. Firstly, it is analyzed that the mass ratio of the LNG to condense BOG and BOG, and recondenser level, and the saturation vapor pressure of high-pump. Then, the merits was made the comparison and analysis that several typical recondenser control systems of domestic LNG terminal. Finally the common control systems were determined by the comprehensive advantages of control systems and added the differntial pressure control. The results showed that, the optimum pressure condensed BOG is 0.7MPaG, and volume greater of recondenser is easier to control systems of self-regulation than the volume smaller, the common control systems are better to ensure the stable operation of the recondenser.

First Application of Inverter “One-to-Four" Control Solution in Long Distance Oil Pipeline

2016, 52(2):  0-0. 

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Abstract: Article describes the first application of inverter "One–to-Four" control solution in long-distance oil pipeline. And through the practical engineering, in-depth study of the implementation of the inverter "One–to-Four" control solution , elaborate on the interlinkages between the station control system, inverter control system and field devices, and analyze how to achieve smooth running for the inverter "One–to-Four" control solution through the PID regulator. The inverter "One-to-Four" control solution successfully applications, which has great significances for "One-to-N" control solution of engineering and construction.

The Application of Wireless Sensor Network in Subsea BOP Control System

2016, 52(2):  0-0. 

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Subsea BOP is one of the most important equipments of the offshore oil work, which is different from onshore BOP in function and configuration.For the difficulty of work，succor，and escape on the offshore，The reliability and security of subsea BOP and its control system will be much more important. Wireless sensor network technology is used in the subsea BOP communication system in this paper. And we put out an energy-efficient route algorithm, which makes every control unit communicating with each other in the way of self-configuration and multi-path, and improves the reliability and security on the base of the original communication and network configuration.

A Kind of Control Strategy of Dividing Wall Columns

2016, 52(2):  0-0. 

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The mechanism modeling of dividing wall columns was built by studying the internal structure of dividing wall columns. The gain scheduling design was used to linearize the nonlinear system of dividing wall columns in the four operating points. For each operating point, the liquid split and side stream which are characteristic of dividing wall columns and the reflux were selected as manipulated variable to design the four temperature control structures and the model predictive controllers. The linear controllers were grouped together to control the nonlinear system. The reliability of the four temperature control structures that designed by gain scheduling design and the model predictive controllers were verified by simulation.

Information Technology

Application of big data in oil industry

2016, 52(2):  0-0. 

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With the gradual reduction of oil reserves, the exploration, development in the oil industry chain becomes increasingly difficult, and the maturity of information technology has become the primary factor affecting the growth rate of the industry. Big data is an important technology which is used to manage data efficiently. It is significant to use big data to improve exploration efficiency and reduce development costs. This paper describes the application of large data in various fields from upstream to downstream in the oil industry and its prospect.

Hydrogenation unit high pressure regulating valve online diagnosis

2016, 52(2):  0-0. 

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Wuhan company develops the measuring appliance preventive maintenance comprehensively, simultaneously advances the instrumental equipment predictability maintenance work development, the hydrogenation unit high pressure regulating valve is the installment essential equipment, the movement quality direct influence installment steady movement, we use FISHER Corporation the valvelink software the diagnosis test which to the company hydrogenation, the hydrocracking 29 FISHER high pressure regulating valve online carries on, finds out the high-pressured regulating valve the movement condition and the existence question, for examines the service to provide the basis, makes the beneficial exploration for the instrumental equipment predictability maintenanc

Instrument and Meter

Pipeline detection technology in elm to the research and application of yulin to jinan gas pipeline

2016, 52(2):  0-0. 

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In pipeline detection technology because of its continuity and comprehensive detection technology, which can complete inspection and weld defects of internal and external corrosion, the corrosion of pipelines is more detailed, comprehensive, accurate, so the technology is now internationally recognized best pipeline detection method. This paper introduces the pipeline inspection technology in the application of yulin to jinan gas pipeline, through internal testing technology research, detector performance index analysis, detection in operation process is introduced and the evaluation of test results, this paper expounds the detection of pipeline in oil and gas pipeline operation and management of the important role.

Comparison of Conventional Rotor Profile of Roots Flowmeter

2016, 52(2):  0-0. 

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Roots rotor is the key part of Roots flowmeter and Rotor profile is the main component factor of rotor. When the basic circle radius and long axis are known，three conventional types of Roots rotor profile are deduced. Three rotor profile lines are obtained. The Solidworks software is used to model the rotor, the conventional type of rotors assembly, and the minimum clearance of the rotor is measured. The performances of Roots rotor profile including the area utilization in the case of same distance ratio are compared.

Innovation and Pratice

Application of a new type of instrument quick connector in field

2016, 52(2):  0-0. 

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Abstract: All the field instruments in the field of the Yaha work area are made using conventional tubes around sexual signal, electrical protection connection. Since the Xinjiang wind, it will lead to the back cover of the instrument threaded into the sand, not open. Several sets of instruments will be damaged during the annual overhaul, resulting in economic losses. Before the conventional wound tubes were used in the field, when it rains the instruments were easy to water, it not only damaged the instrument, but also leaded to parameter inaccurate and seriously affected the process, and there was a big security hidden danger. This paper introduces a new type of instrument quick connector, an effective solution to the above problems.

Application of HART communication protocol in isotope instruments

2016, 52(2):  0-0. 

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The HART communication technology has become a DE facto industry standard, and it has been widely used in intelligent instruments. Although the isotope meter is a special instrument, but the application of HART technology in foreign products has been popular, domestic products have to follow up, to keep up with the pace of the instrument update. In this paper, the HART communication protocol and the principle of isotope instrument are introduced, according to HART technology application in industry isotope instruments, has analyzed for them from design requirements, software and hardware structure and implementation results.

A brief talk on instrument design of Circulating Fluidized-bed boiler system

2016, 52(2):  0-0. 

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Abstract: In order to achieve automatic control of the Circulating Fluidized-bed requirements, combined boiler measuring point and thermal engineering requirements raised to complete the overall boiler automation and field instrumentation design; and details the Circulating Fluidized-bed control system design considerations. Under the circumstances meet the measurement requirements, optimizing the pressure transmitter installation, reducing investment costs, simplify field installation and easy operation and maintenance. Boiler automatic control system running well after the operation showed that meets the design requirements.