Gear oil special for reduction gearbox of pumping unit

Abstract

The invention discloses gear oil special for a reduction gearbox of a pumping unit. The gear oil is prepared from, by mass, blend base oil, metallocene polyisobutene, metallocene polymerized alpha olefin 150, polymethacrylate, an extreme pressure anti-wear agent, a cleaning gent, a dispersing agent, benzotriazole, a defoaming agent and a demulsifying agent T1001, wherein the blend base oil is prepared from paraffin-base base oil 600 SN, residual oil 150 BS and hydrofined oil 250 N, and a mixture of thiophosphoric acid amine salt, bisoctyl dithiophosphate zinc and / or oil-soluble molybdenum is adopted as the extreme pressure anti-wear agent. The gear oil for the reduction gearbox is better in physical and chemical index and using performance than industrial closed gear oil, has the good extreme pressure anti-wear performance, thermal oxidation stability, corrosion resistance and anti-emulsification performance and meets the using requirements of oil pumping unit oil of an oil field.

Description

technical field [0001] The invention belongs to the technical field of lubrication, and in particular relates to a special gear oil for the reduction box of a pumping unit. Background technique [0002] The pumping unit gearbox oil is mainly used in the pumping unit gearbox in the oil field. It is different from ordinary industrial gear oil and needs to meet the special requirements of the pumping unit. The working characteristics of the pumping unit are: heavy load, low speed, alternating load, continuous long-term work, harsh working environment, and large temperature difference. For example, the main oil area of ​​Turpan-Hami Oilfield is located in the Turpan area of ​​Xinjiang, with four distinct seasons, long sunshine hours, large temperature difference between day and night, the annual average temperature is 35°C, and the high temperature weather can generally last up to 99 days, of which the high temperature above 40°C can last up to 36 days. [0003] Gearbox lubrica...

AI Technical Summary

Problems solved by technology

However, medium-duty industrial gear oils L-CKC150 and L-CKC220 are generally used in oilfields as deceleration lubricating oils for pumping units. General-purpose industrial gear oils cannot fully meet the requirements for the use of pumping unit gearbox oils, and cannot be fully applied to pumping units. For the gear box of the oil pumping unit, special oil for the gear box of the pumping unit must be used

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