Application Research Of Ultrasonic Wave For Long Oil Pipeline

Tube drainage of the basic characteristics of the fluid parameters are described, controloil pipeline distribution of fluid and flow characteristics, and the pipe flow and velocitydistribution were analyzed. Based on the principle of ultrasonic flowmeter, flow parameterswere measured and calculated. Transit-time ultrasonic flow measurement and the Dopplereffect by the fluid flow velocity measurement, the basic principle of the two methods aredifferent. In addition, comparison of ultrasonic flow measurement flow meter flowmeasurement method and the difference method, compared to conventional flowmeasurement instruments, ultrasonic flowmeter combines electronics, mechanics, acousticsand other disciplines advantages, easier and faster testing.Ultrasonic flowmeter can be used not only long pipeline flow tests, and leaks can beapplied to the pipeline and position monitoring. Ultrasound from the ultrasonic transducer,electronic circuits and displays, and the cumulative flow system consists of three parts.Ultrasonic flowmeter according to its working principle and scope of various differentcategories, based on the ultrasonic channel structure can be divided into single-channel andmulti-channel ultrasonic flowmeter; can be divided according to different flow channels used,with a drainage tube, with other open channel flow meters. Ultrasonic flow meter installationand monitoring process needs to pay attention to the transducer and host protection in thecourse of testing should be strictly in accordance with procedures. According to thecharacteristics of the long oil pipeline and leak detection requirements of the application, theultrasonic flowmeter has been designed, and facilitate the customers use software frameworkand develop the object-oriented applications.The combination of ultrasonic flowmeter based on the tube drainage fluid characteristicsand flow measurement using ultrasonic flowmeter in the East China Sea oilfield pipe, themeasured data can be monitored directly by the computer, the initial automated online flowmeasurement, and achieve a cumulative measurement of the amount of oil. Theimplementation of real-time monitoring of the East China Sea oilfield pipeline system, allowsfor real-time monitoring of the operation of the staff of the East China Sea oilfield pipe rundata stored on the gate to open and close control. Set up a total of four stations, and thecompletion of the gas-liquid separator pretreatment, ultrasonic detection and signal processing.The accuracy error is strictly controlled in less than±5%. Flow data measured by ultrasonicflowmeter and flow meter were anlyzed using mathematical statistics method. The resultshowed that the ultrasonic flowmeter and flow meter flow measurement results withconsistency, open channel flow measurement ultrasonic flowmeter can replace the flow meterflow measurement. Two stations six measurement times estimated regression equation lineardifference, flow meter measured flow data by the influence of errors brought about by humanerror and on-site environmental objectively.Three flow conditions measured flow comparative test results show, both relativedeviation is less than±2%less than the flow rate measured value, the vast majority of the measured values of the ultrasonic flowmeter; correlation analysis of the experimental dataobtained The ultrasonic flowmeter flow meter flow measurement results are consistent; flowmeasurement and flow meter, flow meter measured flow data by human error and fieldenvironment objectively error ultrasonic flowmeter with the amount of oil and high accuracy,no the oil head loss measurement data without manual calculation, real-time monitoring oftraffic and many comparative advantages.