Testing device and method capable of detecting tension value change of cable in manifold lowering process

The invention relates to a test device and method capable of detecting tension value change of a cable in a manifold lowering process, and belongs to the field of ship model towing tests.The test device comprises a test pool and a manifold model, a towing crane is arranged above the test pool, a variable-frequency speed regulation winch is arranged on the towing crane, and a main cable is tied to the variable-frequency speed regulation winch; the top end of the manifold model is connected with the main cable through an auxiliary cable, and the lower end is lowered into a test pool; wherein the main cable is provided with at least one tension sensor, and the tension sensor is used for recording the change of the tension value of the main cable in the lowering process of the manifold model in real time. The invention discloses a test device and method capable of detecting the tension value change of a cable in the lowering process of a manifold, which can measure the tension change of the cable in the lowering