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After the upgrade of radar level gauge measurement and the application in production station

by:KAIDI     2021-02-13
The instrumentation equipment selection of the oil station work is an important work, through the relevant testing instrument and PeiJian equipment upgrade, can effectively alleviate the labor efficiency, and enhance the quantity accuracy, provides guarantee to the production of normal operation. An example is used to show a certain production station after reviewing tank meter reconstruction process. Before standing library reconstruction, production station work record amount of crude oil has been using artificial meter reading, gauging read value model. Laboratory work every two hours need to have oil chemical test, need to lock moisture content is high do sample; Remember amount every two small repeat work, i. e. every two small need a meter reading, and automatically transfer data to the production scheduling. Amount of artificial record and daily work but also for each big tank gauging, the beauty of each large cans of crude oil containing moisture condition to do the sample, the data will be summarized to the resposible, operate by induction of inventory data measure tank, to check for direct production operation accordingly. This way of record amount of work is not only a difficult task, measured data are vulnerable to the influence of the external environment factors and operation experience in staff levels. To improve management efficiency, production station good automation technology radar level meter is used to improve the beauty of the original record amount of crude oil technology, traditional record amount compared with the upgraded system: a traditional measure job way to remember a difficult task, record the results easily affected by external environment factors and operation experience in staff level, deviation is different, there is great variability; Traditional way remember quantity cannot do instant grasp the production data, not for production inspection guide provide detailed and accurate data, production inspection instruction lack clear subjectivity; Traditional way remember quantity to ensure production safety, not enjoy security alarm functions, easy production liability accident. ( A) The comparison of radar level meter and pedal level meter gauge production station library informatization management stations reconstruction, on the basis of traditional adopts pedal level gauge has carried on the innovation, to storage tanks erected radar level meter, has realized the total amount of work of mechanical automation, mechanical automation degree higher than those in the past. The following detailed comparative analysis. 1. Pedal level gauge for the crude oil storage tank area quantity basic parameter is the tank oil level, known as the oil level method to remember. The old technology to record amount of oil level are mainly composed of various steel chain float liquid level gauge, level gauge steel chain is a kind of traditional liquid level gauge. It is made by using the theory of structural mechanics balance. It is by the oil level inspection system, with high precision offset actuator, constant force loading system, display device, and other peripherals. Principle: dip in the measured liquid float by force, buoyancy and uniform motion produced by constant force loading system of the tensile strength, when the vector material and of the three forces is equal to zero, float in the quasi equilibrium motionless. When the oil level changes, the original structure mechanics equilibrium under the excitation of float by buoyancy, will move through the steel chain of reaching a new equilibrium. Oil level test loading system ( Float) According to the situation of the oil level pull steel chain move, shift actuator move marked by steel chain pin rotation drive system, and thus on the counter to display the situation of the oil level. Shortcomings: its main weaknesses are friction influence precision machine commandment, deviation is very large. 2. Radar level meter for the crude oil storage tank area quantity basic parameter is the tank oil level, known as the oil level method to remember. Old record amount of skill production station with the oil level comprehensive mechanical automation renovation, construction become a has higher ability of mechanical automation information management of library, the crude oil quantity work also had the very big development. Microwave heating of the single pulse technology promotion, to the storage tank liquid level measurement method provides a new direction. Production station has carried on the comprehensive mechanical automation renovation, construction become a has higher ability of mechanical automation information management of library, the crude oil quantity work also had the very big development. Principle: the guided wave radar level meter ( FIG. 1) Is according to the principle of time domain reflector based radar level meter, electromagnetic pulse radar level meter with the speed of light along a wire or rod transmission, when touching the surface of the material being tested, radar level meter part of single pulse was reflecting surface echo and along the same file directory, back to the single pulse transmitters launcher with spacing on the surface of the material being measured is proportional to the propagation time of the single pulse in the period, the calculation to calculate oil level spacing. Guided wave radar level meter technical advantages: radar level meter for liquid, particulate matter and slurry continuous level measurement. The determination of radar level meter is no material change, temperature changes, inert gas and vapor, dust concentration, foam, etc. The precision of the radar level meter is 5 millimeter, dividing the value of 60 meters, 40 kg 350 ℃ high temperature, high pressure resistance, radar level meter for explosion risk areas. Even if the load is complex, you can also use calibration precision level echo is analyzed with the software.
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