Pressure testing device and crude oil collecting device

The invention discloses a pressure testing device and a crude oil collecting device, and belongs to the technical field of petroleum equipment.The pressure testing device comprises a shell and a sliding block, the shell is provided with an inner cavity, the shell is provided with a liquid inlet and a liquid outlet which are communicated with the inner cavity, the sliding block is movably arranged in the shell, and the sliding block can move to plug the liquid outlet; or moving to enable the liquid outlet to be communicated with the inner cavity. The oil pump can pump testing liquid into the inner cavity of the shell through the oil pipe and the liquid inlet, the testing liquid can push the sliding block in the shell to move to block the liquid outlet of the shell, and after the testing liquid is injected into the oil pipe and the shell, whether the sealing performance of the oil pipe is good or not can be judged by detecting the hydraulic pressure of the testing liquid. When crude oil needs to be collected, t