Pipeline detector water circulation test device and detector water circulation test method

The invention discloses a pipeline detector water circulation test device and a detector water circulation test method. A water circulation test device for a pipeline detector comprises a circulation path module, a ball throwing module, a ball receiving module and a water inlet and outlet module connected with an external water inlet and outlet pipe. The circulation path module comprises a ball serving reversing valve, a first circulation pipeline, a second circulation pipeline, a ball receiving reversing valve, a one-way valve assembly, a second ball valve and a fourth ball valve. The pitching module comprises a pitching pipeline and a closed pipe sleeve I; the ball receiving module comprises a ball receiving pipeline and a closed pipe sleeve II; the water inlet and outlet module comprises a four-position six-way reversing valve and four connecting through pipes used for connecting the four-position six-way reversing valve and the circulation path module. The water circulation test method for the detector is