Rapid sampling device for tank car

The utility model discloses a rapid sampling device for a tank car. Relates to the technical field of tank car sampling and particularly comprises a three-way pipe, a first quick-release connector is arranged on a pipe body in the center of the top of the three-way pipe and connected with an oil outlet pipe of a tank car, and the bottoms of the pipe bodies on the left side and the right side of the bottom of the three-way pipe are in through connection with a left side discharging pipe and a right side discharging pipe respectively. Second quick-release connectors are arranged at the bottoms of the left discharging pipe and the right discharging pipe; sealing valves are arranged in the centers of pipe bodies on the left side and the right side of the bottom of the three-way pipe; through the structural design of the three-way pipe, the first quick-release connector, the left side discharging pipe, the right side discharging pipe and the second quick-release connector, a worker can conveniently guide crude oil