Monitoring system of Sinopec Changcheng lubricatin

2022-09-28
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Sinopec Great Wall lubricating oil tank farm monitoring system

Abstract:

in view of the defects of the original monitoring and metering system in data processing and user interface, the force control configuration software is used to design the tank farm monitoring and metering system. The new software is seamlessly combined with the original hardware equipment, and the transformation of the original system is successfully completed, realizing the use effect of efficient data acquisition, real-time processing, high system stability and user-friendly interface

keyword: tank farm monitoring; Metering system; Force control software

I. Introduction:

the monitoring and metering part of the original tank farm is completed by two sets of software. The data refresh speed of the monitoring system is too slow, and the data sharing cannot be well realized. The metering part is realized in the DOS environment. The two systems operate separately, which brings a lot of inconvenience to the operators, and is not convenient for the statistics and analysis of production data. In order to achieve efficient production and scientific management, tank farm monitoring requires that various parameters such as oil tank liquid level and temperature can be displayed timely and accurately, and production data can be further processed and analyzed. Abnormal conditions in production can be reflected to operators in the shortest time, and abnormal conditions can be handled in time. It is hoped that data sharing can be realized through mature network technology, and production conditions can be remotely monitored through web. Therefore, the original system should be reformed

force control configuration software is a special software for on-site data acquisition and process control. With real-time database as the core, it can well complete real-time data acquisition, alarm inspection, data processing and analysis, historical data storage and other functions. This system is a complete tank farm monitoring/measurement solution that takes the force control configuration software as the development environment and integrates real-time data acquisition, data processing and analysis, automatic measurement, network release and other functions

II. System design:

as many monitoring oil tanks have steadily entered the international market up to 149, and the distribution of oil tanks is scattered, many control rooms, tank farms are far away from the monitoring room and require network release, the configuration software selects the force control infinite point www network version; The parameters such as liquid level, temperature, mass, volume and density of the oil tank are collected by the collection device rm3202 and uploaded to the real-time database of the force control. The data monitoring, data processing and analysis are realized by the configuration software; The measurement system is embedded into the report screen of the system to realize the integration of monitoring and measurement

the data acquisition and transmission of tank farm is composed of various sensors, rm3202, rm3402 and other hardware. Each oil tank is equipped with temperature, liquid level and other sensors. The data collected by each sensor is gradually on the track of benign development through the Hart industry. It is proposed to summarize it to the acquisition device rm3202 to realize the bottom acquisition of oil tank parameters; Rm3202 on each oil tank is connected through MODBUS bus, and up to 14 in each group are connected to rm3402 application interface module; Each rm3402 will upload the summary to a total rm3402 application interface module via the RS485 bus through the Modbus protocol; Then the RS232 interface of this rm3402 is connected with the RS232 interface of the industrial PC to upload the parameters of the oil tank in the whole tank farm. The network distribution of the acquisition equipment is shown in Figure 1

software design: the tank farm monitoring and acquisition system is composed of system management, tank monitoring, report viewing, trend viewing, alarm viewing and help parts, which are organized in the form of menus. System management: including data backup and recovery management, all oil name management, user management, login, logout and other functions; Tank monitoring part: the group tank screen displays all monitored tanks and their main parameters in a graphical manner, and the single tank screen displays and sets various detailed parameters of the tank; Report viewing: including user-defined operational reports. Historical reports can query historical data and print out; Alarm viewing: including real-time alarm display, historical alarm query, alarm prompt and confirmation functions; Help: detailed system operation instructions

III. software implementation:

1. System management design: complete data backup and recovery management by using ODBC dump sub graph design provided by force control; Use force control's ability to operate the relational database to complete the oil name management function, and manage the system according to the user management function, login function and logout function provided by force control

2. Tank farm monitoring screen design: the tank group monitoring screen reasonably arranges the positions of each tank in the tank group diagram according to the different functions of the tank and the location distribution of the tank. Each page displays 20 tanks, and each page is switched by buttons; The oil tank icon uses the spirit of the tank diagram provided by force control, and then makes some adjustments according to the user's requirements, and adds an alarm message prompt to the screen; All the detailed information corresponding to the tank is displayed in a single tank (as shown in Figure 2). The liquid level and temperature also have excellent fatigue, creep and oxidation resistance. They are displayed in text and graphics at the same time. In this window, various alarm and prompt parameter setting functions are designed and automatically stored

3. Customized report design: because this report requires strong operability, simple controls are used to splice reports with complex functions. The report form designed in this way is very flexible. According to the needs of users, data can be freely entered into the area, real-time data such as temperature and quality can be displayed, measurement, operable drop-down list box and other controls and functions can be completed in one screen

4. Historical data query design: the historical report control provided by Li Li control is convenient to complete the historical data query part. The corresponding historical data of the tank can be called according to the tank number selected by the user, and a certain period of history can be set for data query

5. Trend view design: the historical trend control and corresponding functions provided by force control are designed to automatically add the liquid level and other collection parameters of the tank in a screen according to the tank number selected by the user and display them in real-time trend. The user can flexibly set the time range, time interval, maximum and minimum display values of data and other parameters to display the trend screen; Designed to query the historical trend with time as the condition, and the printout of the trend chart

6. Alarm view design: use force to control the multi-functional alarm control provided, and design the display of real-time alarm, query and display of historical alarm, etc; The alarm operation function is designed to automatically pop up the window and display the alarm information when an alarm occurs. Users can use the "confirm" button to confirm the latest real-time alarm

7. Embedded measurement design: first, modify the necessary measurement parameters in the force control real-time database. When measurement is needed, the user only needs to click the transparent button (as shown in Figure 2) before (after) the experiment can be carried out only when 1 of the main parameters is switched to normal and the alarm light is not on. The system will automatically read the required data to the required parameters of measurement through Dbcom and hand over the task to the external program to realize it

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