US 10,859,203 B1 · High-low pressure lubrication system for high-horsepower plunger pump

Abstract

The invention discloses a high-low pressure lubrication system for a high-horsepower plunger pump, including a high-pressure oil line and a low-pressure oil line, the high-pressure oil line is used for lubricating the connecting rod bearing bushes and the crosshead bearing bushes in the plunger pump, the low-pressure oil line is used for lubricating the crankshaft bearings, the crosshead sliding rails, the reduction gearbox bearing, and the reduction gearbox gear pair in the plunger pump. The beneficial effects are as follows: oil is fed in two passages: a high-pressure oil line and a low-pressure oil line, the high-pressure oil line is used for lubricating the connecting rod bearing bushes and the crosshead bearing bushes, and the low-pressure oil line is used for lubricating the crankshaft bearings, the crosshead sliding rails, the reduction gearbox bearing, and the reduction gearbox gear pair; two oil pumps are employed to supply oil so that the oil supply of each oil line could be better guaranteed, thus better distributing the lubricating oil, and avoiding problems of uneven distribution of lubricating oil caused by excessive lubrication branches and insufficient amount of lubricating oil at each lubricating point, thus enhancing the utilization of lubricating oil, reducing abnormalities; both the high-pressure oil line and the low-pressure oil line utilize two-stage filtration, which can reduce impurities in the lubricating oil and improve the life time of various components in the plunger pump.

Claims21

Dependent claims

A high-low pressure lubrication system for a high-horsepower plunger pump, comprising a high-pressure oil line and a low-pressure oil line, the high-pressure oil line is used for lubricating the connecting rod bearing bushes and the crosshead bearing bushes in the plunger pump, the low-pressure oil line is used for lubricating the crankshaft bearings, the crosshead sliding rails, the reduction gearbox bearing, and the reduction gearbox gear pair in the plunger pump,

wherein the high-low pressure lubrication system for the high-horsepower plunger pump comprises an oil tank, a high-pressure oil inlet pipe, a low-pressure oil inlet pipe, a high-pressure oil return pipe, and a low-pressure oil return pipe, the oil outlet of the oil tank is connected to the oil inlet of the high-pressure oil line of the plunger pump through the high-pressure oil inlet pipe, the oil outlet of the oil tank is connected to the oil inlet of the low-pressure oil line of the plunger pump through the low-pressure oil inlet pipe, the oil outlet of the high-pressure oil line of the plunger pump is connected into the oil tank through the high-pressure oil return pipe, the oil outlet of the low-pressure oil line of the plunger pump is connected into the oil tank through the low-pressure oil return pipe, the high-pressure oil inlet pipe is in parallel with the low-pressure oil inlet pipe, the high-pressure oil return pipe is in parallel with the low-pressure oil return pipe, and
the high-pressure oil inlet pipe is provided with a high-pressure oil suction filter, a high-pressure oil pump, a high-pressure relief valve, a high-pressure cooler, a high-pressure pressure sensor and a high-pressure temperature sensor in succession along the oil flow direction.

A high-low pressure lubrication system for the high-horsepower plunger pump, comprising a high-pressure oil line and a low-pressure oil line, the high-pressure oil line is used for lubricating the connecting rod bearing bushes and the crosshead bearing bushes in the plunger pump, the low-pressure oil line is used for lubricating the crankshaft bearings, the crosshead sliding rails, the reduction gearbox bearing, and the reduction gearbox gear pair in the plunger pump,

wherein the high-low pressure lubrication system for the high-horsepower plunger pump comprises an oil tank, a high-pressure oil inlet pipe, a low-pressure oil inlet pipe, a high-pressure oil return pipe, and a low-pressure oil return pipe, the oil outlet of the oil tank is connected to the oil inlet of the high-pressure oil line of the plunger pump through the high-pressure oil inlet pipe, the oil outlet of the oil tank is connected to the oil inlet of the low-pressure oil line of the plunger pump through the low-pressure oil inlet pipe, the oil outlet of the high-pressure oil line of the plunger pump is connected into the oil tank through the high-pressure oil return pipe, the oil outlet of the low-pressure oil line of the plunger pump is connected into the oil tank through the low-pressure oil return pipe, the high-pressure oil inlet pipe is in parallel with the low-pressure oil inlet pipe, the high-pressure oil return pipe is in parallel with the low-pressure oil return pipe, and
wherein the low-pressure oil inlet pipe is provided with a low-pressure oil suction filter, a low-pressure oil pump, a low-pressure relief valve, a low-pressure cooler, a low-pressure pressure sensor and a low-pressure temperature sensor in succession along the oil flow direction.

Dependencies are inferred from the claim text.

High-low pressure lubrication system for high-horsepower plunger pump

Life of this patent

High-low pressure lubrication system for high-horsepower plunger pump

Life of this patent

Abstract

Claims21