A flow automatic measurement and control device

Abstract

The invention discloses a flow automatic measuring and control device. An interior channel is formed in a shell, and two cavities which are communicated with the interior channel are formed in the shell. A spool assembly is arranged in a first cavity to control the through-flow quantity of the interior channel through movement of a spool. An actuator is fixedly arranged on the shell to provide driving force for the movement of the spool. A collection end of a magnetoelectricity flowmeter is arranged in a second cavity to obtain a through-flow quantity signal of the interior channel and output a control instruction to a signal receiving end of the actuator. The spool assembly comprises a valve body, a valve rod, a spool, a thrust bearing and a deep groove ball bearing, wherein an interior through hole is formed in the valve body, a through-flow hole which is communicated with the interior through hole is formed in the lower end of the valve body. The valve rod is arranged in the interior through hole, the upper end of the valve rod stretches out from the valve body. The spool and the valve rod are coaxially fixed in the interior through hole to move corresponding to the through-flow hole under the drive of the valve rod. The thrust bearing is arranged outside the valve rod. The deep groove ball bearing is arranged at the upper side of the valve rod. The flow automatic measuring and control device has the advantages of being convenient to install, easy to operate, strong in anti-jamming capability, and high in regulation accuracy.

Description

technical field [0001] The invention relates to a flow control technology for oilfields, in particular to an automatic flow measurement and control device for high-pressure water injection and polymer injection processes in oilfields. Background technique [0002] In the oilfield water injection pipeline network and polymer injection process, manual control valves are usually used to adjust the flow. As we all know, the pressure of the working medium of water injection and polymer injection pipe network is high, and the flow adjustment is difficult. Especially in manual adjustment, the labor intensity of workers is very high, and the adjustment accuracy and work efficiency are low, which is not conducive to the process effect and economy of water injection and polymer injection. Benefit improvement. [0003] In order to reduce the disadvantages of manual operation, a high-pressure flow automatic control device is used on site in the prior art. However, limited by its own s...

AI Technical Summary

Problems solved by technology

However, limited by its own structure, the valve stem of the high-pressure flow automatic control device has no radial positioning, and long-term movement will cause damage to the axial thrust bearing and seizure of the worm gear

In addition, there are still defects such as low adjustment accuracy caused by internal leakage of the valve cylinder, and the calibration of the high-pressure flow automatic control device requires the removal of the entire set of equipment for calibration and high labor intensity.

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