Crude oil quantitative sampling device

Abstract

The invention discloses a crude oil quantitative sampling device which comprises a sampling probe which stretches into a raw oil pipeline, wherein the sampling probe is connected with a manual ball valve, a circulation pump, a filter, a first check valve, a first pneumatic three-way valve and a second check valve in sequence through a circulation pipeline; the second check valve is communicated with a crude oil pipeline through another circulation pipeline; the circulation pipeline between the first check valve and the pneumatic three-way valve is connected with a sampling pipeline; a pneumatic ball valve, a quantitative tank and a second pneumatic three-way valve are sequentially arranged on the sampling pipeline and is finally connected with a sample receiving bottle; the first pneumatic three-way valve and the second pneumatic three-way valve are connected through a pipeline; a lifting platform is arranged below the sample receiving bottle. The crude oil quantitative sampling device solves a series of problems of a conventional automatic sampling device and is reasonable in structure, accurate in sampling amount and good in working property.

Description

technical field [0001] The invention relates to a crude oil quantitative sampling device. Background technique [0002] In terms of pipeline transportation of crude oil, sampling and analysis are generally required to facilitate analysis and determine the quality of the output oil. Manual sampling has been gradually replaced by automatic sampling due to problems such as cost and sampling representativeness. According to the introduction of Ju Yuxiang et al. (Ju Yuxiang, Zhang Lianwen, Lv Chengkui), the existing pipeline autosampler mainly uses the hydraulic piston to quantitatively sample crude oil, but this process is subject to the pressure of the hydraulic station and the hydraulic cylinder, and the inside of the sampling cylinder and the hydraulic cylinder And the sealing ring between the two cylinder blocks is easily damaged, and the failure rate is relatively high. Fu Jian et al. (Fu Jian, Li Hongmei, Wu Xiuli, 2006) introduced that electronic weighing scales were us...

AI Technical Summary

Problems solved by technology

According to the introduction of Ju Yuxiang et al. (Ju Yuxiang, Zhang Lianwen, Lv Chengkui), the existing pipeline autosampler mainly uses the hydraulic piston to quantitatively sample crude oil, but this process is subject to the pressure of the hydraulic station and the hydraulic cylinder, and the inside of the sampling cylinder and the hydraulic cylinder The sealing ring between the cylinder and the two cylinders is easily damaged, and the failure rate is high

Fu Jian et al. (Fu Jian, Li Hongmei, Wu Xiuli, 2006) introduced that electronic weighing scales were used for quantitative sampling, but the error of the measuring equipment is likely to lead to sampling errors, and there is a certain degree of instability.

Images