Reflow soldering furnace nitrogen sealing leakage detection device

The utility model discloses a nitrogen sealing leakage detection device for a reflow soldering furnace. The device comprises a body, a magnesium strip, a cutting knife, a battery, a switch, a spark generator, a heating resistor, a water tank and litmus rubrum test paper, a first sealing cavity and a second sealing cavity are formed in the body. The magnesium strip is arranged in the first sealingcavity; the battery is arranged in the second sealing cavity; the body is provided with a through hole for a magnesium bar to penetrate through. One end of the magnesium strip penetrates out of the first sealing cavity through the through hole; the cutting knife is fixed on the outer wall of the body; a cutting edge of the cutting knife is positioned above the through hole; the spark generator ismounted on the outer wall of the body; the magnesium strips are opposite to the through holes; the spark generator is connected with the battery through the switch; the water tank is fixed to the outer wall of the body, water