Measurement data detection and management system o

Engineering case (4): refinery measurement data detection and management system

overview:

a refinery is a large petrochemical enterprise in China, with many sets of joint petrochemical units expected by industry experts. In order to keep up with the development of angstron company, whose technology headquarters is located in Dayton, Ohio, USA,

this system is introduced to improve the measurement automation level and measurement accuracy in the production process and improve work efficiency

system function and Implementation:

(I) monitoring part:

a, the process flow chart display

monitors the bulk material devices of the whole plant, and monitors the fresh water, circulating water, demineralized water, steam, nitrogen, wind, etc. of the whole energy plant; The monitoring units also include: first joint workshop, second catalytic workshop, coking workshop, second joint workshop, polypropylene workshop, alkylation workshop, oil workshop energy, power through various signal processing stations workshop energy, air separation workshop energy, water supply and drainage workshop energy, water purification workshop energy, etc

b, chart display

the installation location, instrument tag number, name, instantaneous flow, cumulative flow, frequency (current), alarm status,

data source, etc. are displayed on the peak value of the large value of the two-dimensional table, and the temperature and pressure values for compensation that are not displayed in the process flow diagram are also displayed

c, trend curve

(II) reports and workshop Accounting:

the following reports can be displayed:

bulk material report, crude oil in transit consumption report, material report, energy report (water, nitrogen wind, gas, steam), external supply report,

bulk material report, crude oil in transit consumption report, material report, energy report (water, nitrogen wind, gas, steam), external supply report

(III) manual counting:

you can manually modify the data in the monitoring screen

system performance:

a, data accuracy

pulse quantity: counting error =2 pulses

analog quantity: for imp: 0.05% reading ± 0.01% range, for Advantech data acquisition: 0.2% reading

temperature and pressure compensation: 0.15% reading

b, imp minimum sampling time: 1 second

c, minimum data storage time: 30 seconds

d, real-time data refresh cycle: 1 second