Marine explosion-proofing type liquid nitrogen pump skid

Abstract

The invention discloses a marine explosion-proofing type liquid nitrogen pump skid. The liquid nitrogen pump skid comprises a power system, a hydraulic system, a pressurization device, an evaporator and an explosion-proofing heating device, wherein the power system comprises a main motor and an auxiliary motor, the hydraulic system comprises a main hydraulic pump, a main hydraulic motor, an auxiliary hydraulic pump, a first auxiliary hydraulic motor, a second auxiliary hydraulic motor and a sliding vane pump, the pressurization device comprises a centrifugal booster pump and a plunger pump, the centrifugal booster pump is connected with the second auxiliary hydraulic motor, the plunger pump is connected with the main hydraulic motor, the centrifugal booster pump is connected with the plunger pump, the evaporator is connected with the plunger pump, an outlet of the evaporator is connected with a high-pressure nitrogen pipeline, and the sliding vane pump, the evaporator and an electric heater are sequentially connected through pipelines to form a circulation heating system. The liquid nitrogen pump skid is driven by the motors to realize explosion prevention, and has the advantages of being small in equipment size, light in weight, convenient to lift and transport, capable of accurately adjusting according to the final nitrogen exhaust temperature, safe and reliable, and capableof realizing full-automatic control.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a marine explosion-proof liquid nitrogen pump skid. Background technique [0002] At present, offshore oil and gas reserves are abundant, and land oil and gas resources are shrinking day by day. Offshore oil resource stations account for 34% of the world's total oil resources, becoming the main source of world oil and gas production increase. Membrane nitrogen production equipment cannot meet the operational needs of deep-sea oil and gas production increase. High-purity, high-pressure, large-displacement liquid nitrogen pump equipment will be the main equipment for offshore oil and gas production increase development in the next few years. [0003] The special working environment in fields such as offshore platforms seriously restricts the application of liquid nitrogen pump equipment. First of all, oil and gas development on offshore platforms is more likely to produ...

AI Technical Summary

Problems solved by technology

[0004] The existing liquid nitrogen pump equipment is driven by a diesel engine, and the exhaust smoke is discharged without cooling and spark extinguishing devices. Electrical components and engines do not have explosion-proof capabilities, and cannot be used on offshore platforms or other occasions that require high explosion-proof requirements.

Moreover, the volume is huge, and the weight exceeds the carrying capacity of the offshore platform, which limits the application of liquid nitrogen equipment for oil and gas production increase on the offshore platform, and the oil and gas in the ocean cannot be fully developed.

When the diesel-driven liquid nitrogen pump equipment is running, the fuel consumption is large, the operating cost is high, the noise is large, and the pollution

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