Flexible rotating telescopic joint

The utility model discloses a flexible rotating telescopic joint which comprises a link joint, a positioning ring, a limiting bolt, a positioning flange, an outer sleeve and an inner sleeve, wherein the link joint and the positioning ring are welded together through welding; the link joint and the positioning ring are welded on the inner sleeve; the positioning flange is welded on the outer sleeve; the limiting bolt is connected between the link joint and the positioning flange; and the outer sleeve and the inner sleeve are fixedly connected through a hold-down nut. According to the flexible rotating telescopic joint, under the condition of not influencing the pump testing requirement and the performance data measurement, in order to solve the industrial problems that a closed test-bed pump testing pipeline is rigid, so that the time cost is too high, the economic cost is too high, and the pump testing tubings are too large in number, and the pump testing working efficiency is low, the flexible rotating teles