Gas cylinder detection system

The utility model relates to a gas cylinder detection system, which comprises a control cylinder, a water tank and a weighing balance. The weighing balance is arranged at the bottom end of the water tank, the water tank is fixedly suspended by the aid of a support, the weighing balance is fixed onto the horizontal support, a weighing sensor is disposed on the weighing balance and is in communication connection with the control system, the control system is respectively in communication connection with an electric-control pressure regulating valve, an electromagnetic valve, a two-station three-way electromagnetic valve I, a two-station three-way electromagnetic valve II, a first sensor and a second sensor, one end of the electric-control pressure regulating valve is sequentially connected with the electromagnetic valve and a check valve I, the other end of the check valve I is sequentially connected with a driving pressure gauge, a speed regulator valve I and a speed regulator valve II, the other end of the el