BOG recovery recondenser for liquefied natural gas

The utility model provides a BOG (Boil Off Gas) recycling recondenser for liquefied natural gas. The BOG recycling recondenser comprises a vertical cylinder with end sockets at two ends, a first packing part, a second packing part and a spiral riser, an LNG inlet is formed in the center of the top of the barrel, an LNG outlet is formed in the center of the bottom of the barrel, and a BOG inlet isformed in the bottom of the side wall of the barrel; the first packing part and the second packing part are mounted at the upper part in the cylinder body in parallel at intervals from top to bottom;the spiral riser is located at the lower part in the cylinder body, the lower part of the spiral riser is communicated with the BOG inlet, the upper part of the spiral riser is provided with an air outlet pipe part, and the air outlet pipe part penetrates through the second filler part and extends between the first filler part and the second filler part; and a liquid level monitor is mounted on the side wall of the lower p