公开(公告)号：US11933405B2

公开(公告)日：2024-03-19

申请号：US17428909

申请日：2020-02-12

Applicant: Eagle Industry Co., Ltd.

Inventor： Yuichiro Tokunaga ,  Tadatsugu Imura ,  Hiroshi Suzuki ,  Iwa Ou

IPC: F16J15/34 ,  F16C17/02 ,  F16C33/74

CPC classification number: F16J15/3412 ,  F16J15/342 ,  F16C17/02 ,  F16C33/74 ,  F16J15/3416

Abstract: A sliding component includes: a dynamic pressure generation groove provided in a sliding surface of the sliding component, the dynamic pressure generation groove having a first end forming a closed end and a second end forming an inlet communicating with any one side of a sealed fluid side and a leakage side in a radial direction; and a deep groove provided in the sliding surface and deeper than the dynamic pressure generation groove, an inlet 16a of the deep groove communicating with an inlet of the dynamic pressure generation groove on a side of a side wall of the dynamic pressure generation groove, the side wall being circumferentially opposite to a dynamic pressure generation wall constituting another side wall of the dynamic pressure generation groove.

公开(公告)号：US11815184B2

公开(公告)日：2023-11-14

申请号：US17296466

申请日：2019-11-22

Applicant: Eagle Industry Co., Ltd.

Inventor： Hiroki Inoue ,  Yuta Negishi ,  Yuki Maetani ,  Sayaka Miyazaki

IPC: F16J15/34

CPC classification number: F16J15/342 ,  F16J15/3412 ,  F16J15/3416

Abstract: A sliding component includes a dynamic pressure generation groove configured for generating dynamic pressure on a sliding surface, which groove includes an introduction port formed in one end side of the groove in a circumferential direction and which is open to a sealing target fluid H side, a throttle portion communicating with the introduction port and having a narrowed flow path, and a lead-out port formed on the other end side of the groove, which communicates with the throttle portion and which is open to the sealing target fluid side.

公开(公告)号：US11796064B2

公开(公告)日：2023-10-24

申请号：US17717325

申请日：2022-04-11

Applicant: John Crane UK Ltd.

Inventor： Ian Martyn Goldswain ,  Kanza Amanullah ,  Raphael Rouillon

IPC: F16J15/34 ,  F01D11/00 ,  F04D29/12

CPC classification number: F16J15/3404 ,  F16J15/342 ,  F16J15/3412 ,  F16J15/3484 ,  F01D11/003 ,  F04D29/122 ,  F04D29/124

Abstract: A dry gas mechanical seal system configured to inhibit the emission of process gas. The mechanical seal system having tandem first and second stage seals, and a single separation gas supply subsystem configured to direct a supply of separation gas from an inlet through interfacing portions of the first stage seal into a process cavity and from the inlet through the interfacing portions of the second stage seal and out through an outlet to the atmosphere, thereby inhibiting the emission of process gas between a compressor housing and a rotating compressor shaft.

公开(公告)号：US11708911B2

公开(公告)日：2023-07-25

申请号：US16649074

申请日：2018-10-02

Applicant: EAGLE INDUSTRY CO., LTD.

Inventor： Tadatsugu Imura ,  Hideyuki Inoue ,  Yuichiro Tokunaga ,  Yuta Negishi ,  Yuki Maetani ,  Ayano Tanishima

IPC: F16J15/34

CPC classification number: F16J15/3412 ,  F16J15/342 ,  F16J15/3424

Abstract: A pair of sliding components have sliding faces (S) that slide with respect to each other, wherein at least one of the sliding faces (S) includes at least one dimple group (11) constituted by plural dimples (12), and each dimple group (11) includes at least one opening portion (11a) that is arranged in the one of the sliding faces (S) and radially open to the outside the one of the sliding faces (S). In the sliding components, a dynamic pressure generation mechanism can easily be formed, and a lubricating performance and a sealing performance can improve.

公开(公告)号：US20190219173A1

公开(公告)日：2019-07-18

申请号：US16330867

申请日：2017-08-22

Applicant: Siemens Aktiengesellschaft

Inventor： Christian Kirchner

IPC: F16J15/34

CPC classification number: F16J15/342 ,  F16J15/3464 ,  F16J15/38

Abstract: A gas seal which extends in a circumferential direction in an axis has a rotating slip ring and an axially movable stationary slip ring. A slip sleeve guides the stationary slip ring in the axial movement direction by a first sliding face on a second sliding face. The slip sleeve is fastened to a stator of the gas seal, wherein the slip sleeve has a first recess extending in the circumferential direction, and the stator has a second recess, opposite the first recess in the region of the fastening, extending in the circumferential direction, such that the first recess and the second recess define a common cavity extending in the circumferential direction. In the cavity there is an elongate fixing element which at least partially fills the first recess and the second recess such that an unlimited axial relative movement is only possible when the fixing element is radially deformed.

公开(公告)号：US20180195618A1

公开(公告)日：2018-07-12

申请号：US15741203

申请日：2016-06-28

Applicant: EAGLE INDUSTRY CO., LTD.

Inventor： Masatoshi ITADANI ,  Keiichi CHIBA ,  Hideyuki INOUE ,  Yuichiro TOKUNAGA ,  Kenji KIRYU

IPC: F16J15/34

CPC classification number: F16J15/3416 ,  F16J15/34 ,  F16J15/342

Abstract: In an embodiment, a pair of sliding components that slide relative to each other is included. One of the sliding components is a stationary-side seal ring 2, and the other sliding component is a rotating-side seal ring 3. The seal rings 2 and 3 have sliding faces S2 and S3 extending radially, respectively, for sealing sealed fluid against leakage. The sliding faces S2 and S3 are provided with a static pressure groove 22 communicating with a sealing gas supply passage, and pumping grooves 5 capable of controlling the radial flow of sealing gas to a flow from the low-pressure fluid side to the high-pressure fluid side by relative sliding of the sliding faces. By controlling the radial flow of sealing gas at the sliding face, the amount of flow of the sealing gas flowing to the low-pressure fluid side is reduced to improve sealing performance.

公开(公告)号：US20180128378A1

公开(公告)日：2018-05-10

申请号：US15573118

申请日：2016-05-13

Applicant: EAGLE INDUSTRY CO., LTD.

Inventor： Yuichiro TOKUNAGA ,  Hideyuki INOUE ,  Wataru KIMURA ,  Tetsuya IGUCHI ,  Keiichi CHIBA ,  Masatoshi ITADANI ,  Hikaru KATORI

IPC: F16J15/34

CPC classification number: F16J15/342 ,  F02B39/00 ,  F16J15/3412 ,  F16J15/40

Abstract: In an embodiment, a sliding component includes a pair of sliding parts (a stationary-side seal ring 7 and a rotating-side seal ring 4) that relatively slide on each other and each have a sliding face S formed radially for sealing sealed fluid from leaking. The sliding face S of at least one sliding part is provided with dynamic pressure generation grooves 10 spaced in a non-communicating manner from the sealed-fluid side and the leakage side by lands R of both sliding faces, and is provided with fluid introduction holes 11 between leakage-side ends 10a of the grooves 10 and the leakage side, for communicating the grooves 10 and the leakage side. Each fluid introduction holes 11 is configured such that a dynamic-pressure-generation-groove-side opening 11a open to a corresponding one of the grooves 10 is axially displaced from a leakage-side opening 11b open to the leakage side.

公开(公告)号：US20180106374A1

公开(公告)日：2018-04-19

申请号：US15505571

申请日：2015-08-26

Applicant: EAGLE INDUSTRY CO., LTD.

Inventor： Masatoshi ITADANI ,  Kazumasa SUNAGAWA ,  Yuichiro TOKUNAGA ,  Hideyuki INOUE ,  Takeshi HOSOE ,  Ryoma YAMAKAWA ,  Yuta NEGISHI ,  Kenji KIRYU ,  Keiichi CHIBA ,  Akira YOSHINO ,  Hiroshi KUBOTA

IPC: F16J15/34 ,  F04D29/12

CPC classification number: F16J15/342 ,  F04D29/128 ,  F16J15/34 ,  F16J15/3412 ,  F16J15/3448

Abstract: In an embodiments, a slide component includes a pair of slide parts that relatively slide on each other, one of the slide parts being provided in a sealing face with fluid circulation grooves 10 that communicate with a high-pressure fluid side via inlet portions and outlet portions and are separated from a low-pressure fluid side by land portions, the other of the slide parts being circumferentially provided in a sealing face with a plurality of interference grooves 15, 16, 17, 20 for producing pressure variations in a fluid in the fluid circulation grooves 10, adjacent ones of the interference grooves 15, 16, 17, 20 being set to have different shapes.

公开(公告)号：US20180106157A1

公开(公告)日：2018-04-19

申请号：US15294923

申请日：2016-10-17

Applicant: United Technologies Corporation

Inventor： Ronnie K. Kovacik ,  Kevin Duffy ,  Brady Walker ,  Antonio F. Artiles

IPC: F01D11/00 ,  F16J15/16 ,  F01D25/12

CPC classification number: F01D11/003 ,  F01D25/12 ,  F01D25/125 ,  F05D2220/32 ,  F05D2240/55 ,  F05D2260/232 ,  F05D2300/224 ,  F16J15/162 ,  F16J15/3404 ,  F16J15/342 ,  F16J15/4476 ,  Y02T50/675

Abstract: Aspects of the disclosure are directed to a sealing system for an engine having an axial centerline, comprising: a stationary carbon segment, and a seal plate that rotates when the engine is operated, where the seal plate includes an end face that is opposed to an interface between the carbon segment and the seal plate, and where the end face includes at least one groove that conveys a liquid cooling fluid.

公开(公告)号：US20180003069A1

公开(公告)日：2018-01-04

申请号：US15397317

申请日：2017-01-03

Applicant: General Electric Company

Inventor： Rahul Anil Bidkar ,  Azam Mihir Thatte ,  Jifeng Wang ,  Xiaoqing Zheng ,  Edip Sevincer

IPC: F01D11/06 ,  F01D25/16 ,  F01D5/02 ,  F01D9/02 ,  F16J15/40

CPC classification number: F16J15/40 ,  F01D25/22 ,  F05D2240/53 ,  F16J15/342

Abstract: A turbomachine and a method of operating the turbomachine are disclosed. The turbomachine includes a stator, a rotor including a rotor bearing face, a face seal assembly, a first pressure cavity, and a second pressure cavity. The face seal assembly includes a seal ring including a seal bearing face, a first pressure cavity, and a plurality of isolated hydrostatic ports extending from the first pressure cavity to the seal bearing face. The face seal assembly is slidably coupled to the stator and defines a face seal clearance between the rotor and seal bearing faces. The second and third pressure cavities are defined by the stator, the rotor, and the face seal assembly. The third pressure cavity is disposed downstream of the second pressure cavity with reference to flow of a process fluid along the stator and rotor. The first pressure cavity is isolated from the second and third pressure cavities.