MOBILE COMPRESSOR UNIT FOR PUMPING LIQUIDS OF LIQUEFIED NATURAL GAS Russian patent published in 2018 - IPC F04B41/00 

FIELD: machine building.

SUBSTANCE: invention relates to the field of auxiliary compressor equipment for the transport of liquefied natural gas, namely to piston compressors that ensure the evacuation of residual low-temperature vapors of liquefied natural gas from transport or stationary containers of liquefied natural gas. Mobile compressor unit for pumping liquefied natural gas vapor includes a piston V-shaped two-row compressor located in a transportable insulated closed container without lubrication of the cylinder-piston group. Input heat-insulated pipeline of liquefied natural gas vapor is communicated with the compressor suction cavity. Output heat-insulated pipeline is communicated with the compressor discharge chamber. On the input pipeline, in front of the compressor, a pressure regulator and a buffer tank are installed in series along the motion of the medium. On the outlet pipeline, after the compressor, a buffer tank and a safety valve are installed along the path of the medium to release the high pressure of the medium onto the spark plug. On the inlet pipeline, after the pressure regulator, a shut-off remote-controlled valve is installed to allow the unit to be connected to the compressed-air purging system of the compressor with compressed nitrogen. All elements of the unit in contact with the pumped medium are made of a cold-resistant material and have thermal insulation.

EFFECT: arsenal of technical means is expanding, an efficient and convenient operation of the device is created.

8 cl, 4 dwg