公开(公告)号：US20240190091A1

公开(公告)日：2024-06-13

申请号：US18413113

申请日：2024-01-16

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yongmei ZHU ,  Hongzhang PAN ,  Jian ZHANG ,  Shijie SU ,  Suzhou ZHANG ,  Chuxiang LIN

IPC: B29C73/12

CPC classification number: B29C73/12

Abstract: A device includes a water storage tank, a control cabin and an operation cabin which are sequentially connected from top to bottom, the operation cabin includes a sealing zone and an operation zone, the sealing zone is located on an inner wall of the operation cabin, a pressure difference between an internal pressure and an external pressure is adjusted to make the maintenance enhancing device separated from or absorbed on a subsea pipeline, and the operation zone is located between the sealing zone and the subsea pipeline.

公开(公告)号：US20170198645A1

公开(公告)日：2017-07-13

申请号：US15316757

申请日：2015-06-01

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jian ZHANG ,  Wenxian TANG ,  Fei YAN ,  Shijie SU ,  Qinfeng LI ,  Jiyang QI ,  Yongmei ZHU ,  Yan LIU ,  Kai YAO

IPC: F02D1/16

CPC classification number: F02D1/16 ,  F02D1/162 ,  F02M39/02 ,  F02M59/48 ,  F02M2200/8092

Abstract: A device for adjusting a fuel supply advance angle of a multi-cylinder diesel engine includes a gear chamber (3), a connecting disc (5) and a high-pressure fuel pump (2), wherein the gear chamber (3) and the connecting disc (5) are assembled in the diesel engine, and the high-pressure fuel pump (2) is arranged at a left end surface outside the gear chamber. A main shaft end of the high-pressure fuel pump (2) extends into the gear chamber (3) and is connected to the connecting disc (5). A right end surface of the connecting disc (5) is connected to a timing gear (6) of a fuel injection pump. A right end surface of the timing gear (6) of the fuel injection pump is provided with three penetrating circular-arc waist-shaped holes (61) that are away from the center and equally spaced along the circumference direction. Annular sizing blocks (63) are arranged on the waist-shaped holes (61). A penetrating circular hole (68) is arranged at a tail end of at least one of the waist-shaped holes (61) in a counterclockwise direction and away from the waist-shaped hole (61). The circular hole (68) is provided with a T-shaped nut (65), and the axis of the T-shaped nut (65) is in parallel with the end surface of the timing gear (6) of the fuel injection pump. A support screw (67) is arranged in the T-shaped nut (65), and the screw head of the support screw (67) is jacked against the annular sizing block (63). A method for adjusting a fuel supply advance angle of a multi-cylinder diesel engine is also disclosed. The adjusting device and the adjusting method are convenient for adjusting a fuel supply advance angle and therefore have high adjustment precision.

公开(公告)号：US20230080177A1

公开(公告)日：2023-03-16

申请号：US17996241

申请日：2021-04-16

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jian ZHANG ,  Rui WANG ,  Chenyang DI ,  Wenxian TANG ,  Xin WANG ,  Baoji YIN ,  Shijie SU ,  Yongmei ZHU

IPC: G06F30/15

Abstract: A pressure-resistant hull for a submersible, includes unit hulls, reinforcing ribs, connecting channels, and closure heads. A plurality of unit hulls are provided, and are sequentially strung together spiralling upward or spiralling downward, the closure heads being arranged on the unit hulls at the first position and the last position respectively, an observation window being provided on each unit hull respectively, adjacent two unit hulls in a horizontal direction being respectively connected by means of a reinforcing rib, and at least two connecting channels being provided between adjacent two rings of the unit hulls in the vertical direction. The design method includes using a spiral joining structure to facilitate organic adjustment of the number of unit hulls, thus having better utilization of space and aiding to greatly expand the space. The sensitivity of the limit load to defects is low, increasing axial rigidity, improving the overall pressure-resistive ability.

公开(公告)号：US20210247282A1

公开(公告)日：2021-08-12

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.