公开(公告)号：US20220170811A1

公开(公告)日：2022-06-02

申请号：US17537448

申请日：2021-11-29

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yinshui Liu ,  Shendan Zhao ,  Defa Wu ,  Hao Pang ,  Yipan Deng

IPC: G01M3/26 ,  F04B51/00

Abstract: The disclosure discloses a testing device and a testing system for high-pressure and large-scale gap dynamic sealing performance. The testing device includes a cylinder, first and second plunger rods and a piston rod. A first chamber is formed between an end of the first plunger rod and the cylinder, and a second chamber is formed between an end of the second plunger rod and the cylinder. The first chamber and the second chamber are provided with high-pressure liquid, and the two chambers communicate with each other. When being driven by a driving device, the piston rod drives the first and second plunger rods to reciprocate left and right. A plunger sleeve is disposed outside each of the first and second plunger rods. The plunger sleeve has a leakage port. When the first and second plunger rods reciprocate, the high-pressure liquid in the chambers leaks from the leakage port.

公开(公告)号：US10683939B1

公开(公告)日：2020-06-16

申请号：US16245841

申请日：2019-01-11

Applicant: Huazhong University of Science and Technology

Inventor： Defa Wu ,  Chao Li ,  Yinshui Liu ,  Qian Cheng ,  Zhenyao Wang ,  Guang Luo ,  Yipan Deng ,  Hao Pang ,  Xiaomin Zhai

IPC: F16K27/02 ,  F16K1/42 ,  F16K1/36 ,  F16K27/06 ,  F16K1/48 ,  F16K27/12

Abstract: An ocean depth automatic compensation type full-ocean-depth hydraulic control water stop valve includes a valve body having an inlet and outlet on a side thereof; a valve sleeve assembly embedded in the valve body; and a valve core assembly. The valve sleeve assembly includes a spring cover; a pressure rod valve sleeve; a valve core cover; a valve seat; a pressing piece; a push rod valve sleeve base body; and a screw plug. The valve core assembly includes a pressure rod; a valve core; and a push rod.

公开(公告)号：US11719595B2

公开(公告)日：2023-08-08

申请号：US17537448

申请日：2021-11-29

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yinshui Liu ,  Shendan Zhao ,  Defa Wu ,  Hao Pang ,  Yipan Deng

IPC: G01M3/28 ,  G01M3/26 ,  F04B51/00

CPC classification number: G01M3/26 ,  F04B51/00

Abstract: The disclosure discloses a testing device and a testing system for testing high-pressure and large-scale gap dynamic sealing performance of a plunger sleeve. The testing device includes two cylinders, first and second plunger rods and a piston rod. A first chamber is formed between an end of the first plunger rod and a first cylinder, and a second chamber is formed between an end of the second plunger rod and a second cylinder. The first chamber and the second chamber are provided with high-pressure liquid, and the two chambers communicate with each other. When being driven by a driving device, the piston rod drives the first and second plunger rods to reciprocate left and right. The plunger sleeve and a locking plunger sleeve are disposed outside each of the first and second plunger rods. The locking plunger sleeve has a leakage port. When the first and second plunger rods reciprocate, the high-pressure liquid in the chambers leaks from the leakage port.