31results about How to "Play an anti-wear role" patented technology

The invention discloses an oil and water well extraction and injection tubular column internally and externally wrapped with hot melting plastic layers and a manufacturing method of the tubular column. The inner wall and the outer wall of each extraction and injection steel pipe are wrapped with the hot melting plastic layers, and the extraction and injection steel pipes are in screw connection with each other through pipe couplings. As for a pipe opening gasket between pipe openings of every two extraction and injection steel pipes, an inner ring is in a slab shape, the outer ring is in a trapezoid with the larger outside and the smaller inside, and the trapezoidal outer ring of the pipe opening gasket is firmly embedded into a trapezoidal groove of the corresponding pipe coupling. The inner wall and the outer wall of the overall tubular column are both wrapped with plastic, no gas and no steel exposed point exist between the inner walls of the extraction and injection steel pipes and the hot melting plastic layers, and the condition that liquid and gas make contact with steel is obstructed. Owing to the fact that inner layer plastic and the outer layer plastic cannot fall off, the effect that the tubular column inner walls of full oil extraction wells and injection wells are completely resistant to corrosion is achieved, and the wear-resistant effect of the tubular column pipe walls is achieved, so that the service life of the overall extraction and injection tubular column is prolonged by 3-5 times, and the repairing-free periods of the oil and water wells are prolonged by 2-3 times. According to the extraction and injection tubular column, steel is saved, the oil exploiting cost is reduced, the failure rate of the oil wells is decreased, and working efficiency is improved.

The invention discloses an environmentally friendly gasoline additive, which is composed of the following raw materials in parts by weight: 1-5 parts by weight of short-chain alcohol; 3-7 parts by weight of core-shell structure cerium oxide / silicon dioxide particles; cage-type silsesquioxane 2.5-7.5 parts by weight of alkane; 0.5-3 parts by weight of perfluoropolyether; 10-30 parts by weight of ethyl tert-butyl ether; 5-10 parts by weight of dipolyethylene glycol monomethyl pentyl ether; 1-6 parts by weight of ricinoleic acid ester; 2-8 parts by weight of fluorine-containing diamine compound. The environment-friendly gasoline additive of the present invention not only solves the problems of environmental pollution, engine carbon deposits, and fuel stratification caused by gasoline combustion, but also improves the power, anti-corrosion, anti-rust and lubricating performance of the engine, and reduces the wear and tear of the engine. The service life of the engine is prolonged, and it is more conducive to large-scale popularization and application. The invention also discloses a preparation method of the environment-friendly gasoline additive.