A crane tube loading metering system

Abstract

The invention relates to a crane pipe loading metering system, comprising a vertical pipe, an oil pump, a flow meter and a controller, including a measuring rod vertically arranged on the outer periphery of the vertical pipe, a touch rod sleeved on the measuring rod, a The electronic warehouse on the top and the float arranged at the bottom end of the measuring rod. There is a small magnet close to the measuring rod inside the feeler rod, and the feeler rod can freely move up and down along the measuring rod; the float includes a The float switch, the protective shell covering the bottom periphery of the float switch and the measuring rod, the protective shell can float on the oil surface and will not fall off from the bottom of the measuring rod; the invention can eliminate the error caused by different tank car heights, and can replace the flow rate It can realize the start-stop control of the oil pump by computer or manual control, and the control is more accurate.

Description

Technical field [0001] The present invention belongs to the technical field of liquid metering, which specifically involves a crane-tube loading metering system. Background technique [0002] The liquid material is generally existed in the petrochemical industry. In the loading metering station, to measure the flow of oil to the normal operation of the loading system, the flow of the oil is measured and regulated; the common oil metering method has orbit titled, car 衡称, The measurement of the measurement or flow meter, the weight of the vehicle is required to be loaded with the weight of the vehicle, and the weight of the heavy car is reproduced after loading, and the weight of the oil is reduced by the weight of the oil. After the measurement is measured after loading, the oil level height is measured, and the weight of the oil is calculated according to the density of the oil, the above two metering processes are cumbersome, the automation level is low and the measurement accur...

AI Technical Summary

Problems solved by technology

[0002] Liquid materials are ubiquitous in the petrochemical industry. In the loading metering station, in order to meet the normal operation of the loading system, it is necessary to measure and adjust the flow of oil products; common oil metering methods include rail scale weighing and truck scale weighing , ruler measurement or flowmeter measurement, the weight of the vehicle needs to be weighed before loading, and then the weight of the heavy vehicle is weighed after loading. The weight of the heavy vehicle minus the weight of the empty vehicle is the weight of the oil product; The measurement is to measure the oil level with a measuring ruler after loading, and calculate the weight of the loaded oil according to the density of the oil. The above two measurement processes are cumbersome, and the automation level and measurement accuracy are low.

[0003] At present, more crane tubes are used for loading in the loading metering station. The crane tubes are usually installed on the vertical moving mechanism, so that the crane tubes can move up and down, extend into the tank mouth of the tanker, and extend into the tank mouth. The crane pipe starts to fill the oil tank, and the flowmeter starts to measure at the same time. After the measurement reaches the target flow rate, the controller controls the valve on the oil filling pipeline to close and the oil pump to stop. However, the accuracy of the flowmeter itself allows a certain error, and The error will increase during use, so it is necessary to calibrate the flowmeter regularly. If the error is large but not calibrated, it will affect the accuracy of the fuel loaded.

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