公开(公告)号：US11105721B1

公开(公告)日：2021-08-31

申请号：US17273598

申请日：2019-08-26

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yun Chen ,  Jian Zhang ,  Si Zhang ,  Wenxian Tang ,  Yueyang Wang ,  Zhengdao Hua ,  Baoji Yin ,  Yongmei Zhu

IPC: G01N3/12

Abstract: A complex pressure environment test device, comprising a test table and a hydraulic control system. The test table comprises a base for fastening a closure head under test, and an outer cover; the base has water inlets and outlets. The hydraulic control system comprises a watering hydraulic pump, a pressurizing hydraulic pump, and a pilot-operated overflow valve; the watering hydraulic pump is separately connected to a first two-position two-way valve and a second two-position two-way valve; the second two-position two-way valve is connected to a second one-way valve; the second one-way valve is separately connected to a water inlet and a first pilot-operated pressure regulating valve; the first pilot-operated pressure regulating valve is separately connected to a first remote pressure regulating valve and a first one-way valve. There is also a hydraulic circuit is present and used for testing.

公开(公告)号：US10233722B2

公开(公告)日：2019-03-19

申请号：US15752585

申请日：2016-10-31

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Wenxian Tang ,  Jian Zhang ,  Shijie Su ,  Hua Li ,  Yuan Li ,  Yun Chen ,  Shuyan Wang

IPC: E21B41/04 ,  E21B34/04 ,  E21B43/013 ,  E21B33/035 ,  E21B33/043 ,  E21B34/16

Abstract: A moving-rotating linear covering tool, comprising a port, a primary oil cylinder, a piston rod, a rear end cover, a base sleeved on the right end of the primary oil cylinder, and a handle fixedly connected onto the outer cylinder of the base. The port is fixedly connected to the left end of the primary oil cylinder, the center thereof being provided with a circular hole that clearance-fits the piston rod arranged in the primary oil cylinder. A circular flange of the rear end cover is fixedly connected onto the right end face of the primary oil cylinder. The base is connected to a guide supporting sheath sleeved, in a clearance-fitted way, on the outer cylinder of the primary oil cylinder. A bearing seat is provided on the right end wall of the base Two screw holes are symmetrically provided at the right end face of the rear end cover.