Polymer injection high-pressure ball valve driven by worm wheel

Abstract

The invention provides a polymer injection high-pressure ball valve driven by a worm wheel and a special product for an oil deposit polymer injection project. The ball valve comprises a valve body, a double-end bolt, a flange, padding, an O-shaped ring, a valve seat, a sphere, the padding, a valve rod, the O-shaped ring, a loop bar, a bolt, a flange seat and a worm wheel device, wherein the padding between the valve seat and the sphere uses nylon products as sealing face padding which is the soft forming padding and good in sealing property, a force unloading device uses a worm wheel and worm transmission mechanism, a circular hand wheel installed on the worm wheel device controls an on-off state of the valve. The ball valve has the advantages of being small in hydraulic resistance, a resistance coefficient is equal to a tube section with the same length with the ball valve, and the ball valve also has the advantages of being low in solution shear rate, saving time, saving labor, opening and closing quickly through adoption of a worm driving device. Because of adoption of the nylon sealing face padding which is good in sealing property, the ball valve is long in service life, small in occupied area, light in weight, convenient to operate, simple in structure, convenient to dismantle and replace, convenient to maintain and the like.

Description

Technical field [0001] The invention belongs to the field of valve manufacturing, and relates to a ball valve, in particular to a worm gear driven polymer injection high-pressure ball valve suitable for oilfield polymer injection engineering. Background technique [0002] With the continuous development of oil fields, the ball valve is a new type of valve that is widely used. It has low fluid resistance, and its resistance coefficient is equal to that of a pipe section of the same length. It has a simple structure, small volume, light weight, tightness and reliability. The current sealing surface of ball valves The material is widely used in plastics and has good sealing properties. It has also been widely used in vacuum systems. It is easy to operate and quickly opens and closes. It only needs to rotate 90° from full open to full close, which is convenient for remote control, convenient maintenance, simple ball valve structure and sealing The ring is generally movable, and it is...

AI Technical Summary

Problems solved by technology

However, the sealing surface material of the worm gear driven ball valve in the current technology can not meet the requirements of use. When fully open or fully closed, the sealing surface of the ball and the valve seat passes through the medium. When the medium with harsh working conditions, such as oxygen, peroxide Hydrogen, methane and ethylene, etc., will cause erosion of the valve sealing surface

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