FIELD: engines and pumps.
SUBSTANCE: pre-startup oil heating device includes a heating unit installed in oil tank, oil pump installed in the circuit consisting of receiving pipeline interconnected with its inlet to oil tank in the zone below oil level, and drain pipeline interconnected with oil tank. According to the present invention, heating unit is installed in sealed casing, to the cavity of which outlet of receiving pipeline is connected, drain pipeline is connected to cavity of sealed casing, and outlet opening of drain pipeline is located in near-bottom zone of oil tank.
EFFECT: increasing oil heating efficiency during pre-startup period; reducing labour intensity of maintenance and repair of the device.
5 cl, 1 dwg
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