The anti-corrosion pump with valve cover liner enhances the corrosion resistance and impact resistance of the pump and valve cover, and is suitable for oil well production with high salinity, easy corrosion and valve cover fracture.

Stellite alloy is a kind of hard alloy that is resistant to wear, corrosion, and high-temperature oxidation.

That is, cobalt-chromium-tungsten (molybdenum) alloy or cobalt-based alloy. Stellite was invented by American Elwood Haynes in 1907.

Cobalt is the main component of Stellite alloy, which contains a certain amount of nickel, chromium, tungsten, and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum, and other alloying elements.

According to the composition of the alloy, they can be made into wire and powder, can be used for surfacing, thermal spraying, spray welding, and other processes, can also be made into casting and forging parts and powder metallurgy parts.

The bushing is used for mechanical parts, to achieve sealing, anti-wear, and other functions of accessories.

The liner in the valve cover, generally using PTFE or graphite and other corrosion-resistant materials, but also can use stellite alloy, can play a sealing, corrosion protection, and enhance the strength of the role.

The anti-corrosion pump oil well with valve cover liner enhances the corrosion resistance and impact resistance of the pump and valve cover, and is suitable for oil well production with high salinity, easy corrosion and valve cover fracture.

The valve cover is lined with an anticorrosive oil well pump to enhance the corrosion resistance and impact resistance of the oil well pump and valve cover, and is suitable for oil wells with high salinity, easy corrosion and valve cover fracture.

During the pumping process of conventional oil well pumps, sand particles can easily enter the sealing gap and cause wear on the pump barrel and plunger.

Due to the action of the sand scraping ring, the diameter of the sand particles in the well fluid through the filter sand screen is smaller than the size of the sealing gap, which will not cause wear to the pump barrel and plunger, and will not be sand stuck;

It is different from the sealing ring of a soft seal pump: the pressure at the upper and lower ends is balanced, and the positive pressure with the pump barrel is only its own elastic force.

Therefore, the wear is small and the service life is long.

Features:

1. Sand control: During the normal swabbing process, since sand particles will not deposit in the wedge-shaped gap at the oil outlet valve, sand sticking will never occur.

2. Long life: Because large-diameter sand cannot enter the gap between the pump barrel and the plunger, it will not wear the plunger and the pump barrel, the gap leakage is almost unchanged, the pump efficiency drops slowly, and the high pump efficiency is long.

3. Simple structure, low cost, few wearing parts and low failure rate.

4. The construction operation is exactly the same as the conventional pump, with simple operation and convenient maintenance.
Application:

It is suitable for conventional oil wells with pump inlet temperature less than 100℃, sand content less than 0.5‰, and crude oil viscosity less than 3000mPa·S.