METHOD FOR IMPLOSION PROTECTION OF INTEGRATED ELECTRICAL EQUIPMENT OF COMPRESSOR PLANT FOR TRANSPORTING EXPLOSIVE GASES Russian patent published in 2007 - IPC F16C32/04 

FIELD: oil and gas industry, chemistry, in particular, methods for implosion protection of integrated electrical equipment of compressor plant for transporting explosive gases.

SUBSTANCE: method includes supplying protective gas from protective gas source, positioned outside the explosive zone of plant, under excessive pressure into protective covers of electrical equipment and blowing protective covers in pre-launch blowing mode and all types of stops of compressor plant, and also supplying previously cooled protective gas from drive engine compressor in working modes, while switching of protective gas sources is performed automatically after reaching given pressure value in protective gas supply system. Preservation of protective covers of electrical equipment from penetration of explosive gases and protection of electrical equipment from creation of bearing currents is performed automatically, while difference of pressures between protective covers of electrical equipment and second steps of gas-dynamic seals is measured, and also flow or pressure of protective gas at outputs of protective covers of electrical equipment, and, in case of decrease of pressure difference values and flow or pressure below given values, compressor plant is stopped and power voltage of electromagnets is disabled, closed conductive contour is excluded in case of presence of power voltage on electromagnets after prevention of creation of bearing currents. To prevent penetration of explosive gas into protective covers of integrated electrical equipment from explosive premises, drive engine is isolated, for example, encased in cover, cover of engine and cover of sleeve are ventilated, while the air from the space below covers of drive engine and drive sleeve is sucked out of explosive zone. Series of actions, ensuring implosion protection of electrical equipment accordance to algorithms, is taken in all operation modes of compressor plant.

EFFECT: increased efficiency of implosion protection of integrated electrical equipment of compressor plant, and, therefore, increased reliability of its operation.

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