Collecting and discharging system for isolating void cabin methanol leakage

The invention provides a collecting and discharging system for isolating void cabin methanol leakage. The collecting and discharging system comprises a water injection connector, a fire hose, an injection pump and the like. When methanol leaks in the isolated void of the methanol fuel cabin, the liquid detection sensor can trigger an alarm after detecting that methanol leaks, then personnel on the ship can communicate with a fire-fighting main pipe of the whole ship through a fire-fighting hose, seawater is fed from the fire-fighting main pipe to the isolated void to dilute leaked methanol, and the leaked methanol passes through the injection pump to be injected into the isolated void. And discharging the diluted methanol solution to methanol extraction equipment, and separating methanol from the aqueous solution by the methanol extraction equipment to realize recycling of methanol. The collecting and discharging system disclosed by the invention is beneficial to ensuring that methanol leaked to the isolation