Oil outlet pipe joint testing stopper

The invention discloses an oil outlet pipe joint testing stopper.A fixed center body and a driving ring vertically sliding along the center body are arranged on the lower portion of a body.A flow-out channel and a pressurizing channel are arranged on the center body, so that an inner cavity of the center body is communicated with the outside.A sliding type lock pin is arranged on the flow-out channel to control the flow-out channel to be connected and disconnected.A reset spring is arranged on the lock pin, and the rear end face of the lock pin is a driving inclined face.A driving block is arranged at the upper end of the driving ring and can push the lock pin to move forwards, and the flow-out channel is sealed after the lock pin is put in place.Or, the driving ring can push a lock block embedded into the body to move towards the center, and the lock block is made to be clamped in a corresponding groove opening in the outer surface of an oil outlet pipeline.According to the stopper, liquid can be drained out