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公开(公告)号：US20240344561A1
公开(公告)日：2024-10-17
申请号：US18685177
申请日：2022-08-22
发明人： Yuichiro TOKUNAGA , Takeshi HOSOE , Hikaru KATORI
CPC分类号： F16C33/107 , F16C17/045 , F16J15/3412
摘要： There is provided a sliding component capable of discharging contamination into a gap between sliding surfaces. In a sliding component which is disposed at a relative rotational location of a rotating machine to slide relative to another sliding component. The sliding component has a sliding surface provided with a fluid inlet groove communicating with at least one of a sealed fluid side space and a leakage side space and a dynamic pressure generation groove communicating with the fluid inlet groove and extending in a circumferential direction. Both side edges and a terminating end edge of the dynamic pressure generation groove are curvedly continuous with each other in a plan view.
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公开(公告)号：US11821461B2
公开(公告)日：2023-11-21
申请号：US17428912
申请日：2020-02-12
发明人： Iwa Ou , Tadatsugu Imura , Hiroshi Suzuki
CPC分类号： F16C17/024 , F16J15/3412
摘要： A pair of sliding components formed in an annular shape and disposed at a relatively rotating position of a rotary machine are constituted by a first sliding component 10 and a second sliding component. A sliding surface of the first sliding component has a plurality of dynamic pressure generation mechanisms each of which includes at least a shallow groove communicating with a leakage side. A sliding surface of the second sliding component has deep grooves each of which has a dimension deeper than that of the shallow groove of each of the dynamic pressure generation mechanisms and communicates with the leakage side, each of the deep grooves overlapping with the shallow groove each of the dynamic pressure generation mechanisms during relative rotation of the first and second sliding components.
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公开(公告)号：US20230194000A1
公开(公告)日：2023-06-22
申请号：US17911754
申请日：2021-01-26
发明人： Klaus Lang , Thomas Zauner
IPC分类号： F16J15/34
CPC分类号： F16J15/3412
摘要： The invention relates to a mechanical seal comprising a rotating slide ring (2) and a stationary slide ring (3) defining a sealing gap (4) therebetween, one of the slide rings (2) having at least a first row (11) of a plurality of first grooves (5) with a foot region (50) on a first radius (R1) and a head region (51) on a second radius (R2) wherein a second circumferential sliding region (33) is provided between the head regions of the radially outermost row of grooves of the slide ring (3) and an outer radial edge (31) of the slide ring (2), the other of the slide rings (3) having at least a second row (12) of a plurality of second grooves (6) with a foot region (60) at a third radius (R3) and a head region (61) at a fourth radius (R4) wherein a second circumferential sliding region (33) is provided between the head regions of the radially outermost row of grooves of the slide ring (3) and an external radial edge (31) of the slide ring (3), wherein the first radius (R1) is smaller than the third radius (R3), and wherein the second radius (R2) is smaller than the fourth radius (R4).
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公开(公告)号：US20230175587A1
公开(公告)日：2023-06-08
申请号：US17913153
申请日：2021-03-30
发明人： Tadatsugu IMURA , Iwa OU , Shogo FUKUDA , Kenta UCHIDA
CPC分类号： F16J15/3412 , F16C33/74 , F16J15/3424
摘要： In a sliding component formed in an annular shape and disposed at a relatively rotating position of a rotating machine and sliding relative to an opposite sliding component, a sliding surface of the sliding component is provided with a conduction groove communicating with an outer space and a dynamic pressure generation groove communicating with the conduction groove, extending in a circumferential direction, and having a closed terminating end portion and at least a part of a bottom portion of the conduction groove is provided with an inclined surface inclined with respect to a radial direction.
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公开(公告)号：US20180347703A1
公开(公告)日：2018-12-06
申请号：US15906057
申请日：2018-02-27
发明人： CHENG-HSIU HUANG , TZU-HSING CHEN
IPC分类号： F16J15/34
CPC分类号： F16J15/3452 , F16J15/3412
摘要： The present invention provides a shaft sealing device for being mounted on a rotating shaft. The shaft sealing device of the present invention includes a stationary member disposed on a housing of the shaft sealing device and having a first sealing surface; and a rotary member corresponding to the stationary member, disposed on the rotating shaft and having a second sealing surface opposite to the first sealing surface of the stationary member. A groove is disposed on the first sealing surface or the second sealing surface, and extends inwardly from the outer peripheral edge. When the groove extends inwardly, an end (a bottom wall) of the groove extends along a tangential direction of an imaginary circle containing the bottom wall of the groove.
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公开(公告)号：US10054230B2
公开(公告)日：2018-08-21
申请号：US15504266
申请日：2015-09-03
发明人： Hikaru Katori , Keiichi Chiba , Masatoshi Itadani
IPC分类号： F16J15/34
CPC分类号： F16J15/3412 , F16J15/34 , F16J15/3416 , F16J15/342
摘要： Provided is a mechanical seal includes a fluid introduction groove provided in a sealing face of a stationary sealing ring and having an opening portion which is opened to the sealed fluid and an end portion which is provided opposite to the opening portion. The end portion being located between respective sealing faces S, the fluid introduction groove introducing the sealed fluid from the opening portion to a clearance between the respective sealing faces S. The fluid introduction groove is provided to be inclined at an acute angle to the sealing face S of the stationary sealing ring in a direction from the end portion to the opening portion.
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公开(公告)号：US20180187784A1
公开(公告)日：2018-07-05
申请号：US15739973
申请日：2016-06-23
发明人： Masatoshi ITADANI , Kazumasa SUNAGAWA , Yuichiro TOKUNAGA , Hideyuki INOUE , Takeshi HOSOE , Ryoma YAMAKAWA , Yuta NEGISHI , Kenji KIRYU , Keiichi CHIBA , Akira YOSHINO , Hiroshi KUBOTA
CPC分类号： F16J15/3416 , F04D29/122 , F05D2240/55 , F16C33/743 , F16C33/7843 , F16J15/162 , F16J15/3412 , F16J15/3464
摘要： In an embodiment, in a sliding component, a sliding face of a stationary-side seal ring 6 has a fluid circulation groove 10 communicating with a high-pressure fluid side via an entrance portion 10a and an exit portion 10b. A rotating-side seal ring 5 has a larger outer diameter and a smaller inner diameter than the seal ring 6. A groove 15 into which a claw is loosely fitted is provided on an outer periphery of the seal ring 5. A width of the groove 15 is smaller than a distance between the portion 10a and the 10b in the circumferential direction. WMR/WSR is set within a range of 0.75
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公开(公告)号：US09982784B2
公开(公告)日：2018-05-29
申请号：US14234200
申请日：2012-07-27
申请人： Haruhiro Osada , Hideyuki Inoue , Takeshi Hosoe , Daisuke Morimiya , Yuichiro Tokunaga , Yuta Negishi
发明人： Haruhiro Osada , Hideyuki Inoue , Takeshi Hosoe , Daisuke Morimiya , Yuichiro Tokunaga , Yuta Negishi
IPC分类号： F16J15/34
CPC分类号： F16J15/34 , F16J15/3412
摘要： A mechanical seal has a structure wherein a plurality of sealed-fluid-accommodating blocks separated in the circumferential direction are formed on either the sealing face of a fixed ring or the sealing face of a rotating ring so as to communicate with a sealed fluid accommodation space. Pumping parts for creating a pumping action due to the fixed ring and the rotating ring sliding while undergoing relative rotation are formed on a bottom part of the plurality of sealed-fluid-accommodating blocks. The pumping parts formed on the bottom parts of the plurality of sealed-fluid-accommodating blocks are provided with an intake pumping part which acts in a direction in which the sealed fluid is drawn in and a discharge pumping part which acts in a direction in which the sealed fluid is discharged.
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公开(公告)号：US09964215B2
公开(公告)日：2018-05-08
申请号：US14419438
申请日：2013-12-04
发明人： Masatoshi Itadani
IPC分类号： F16J15/34
CPC分类号： F16J15/3412
摘要： A sliding component is characterized in that the sealing face of one of a pair of sliding parts that slide relative to each other is provided with a first pumping groove that is open to the high-pressure fluid side but isolated from the low-pressure fluid side by a seal area and also angled to discharge the fluid toward the high-pressure fluid side by sliding relative to the mating sealing face, as well as a second pumping groove that is open to the low-pressure fluid side but isolated from the high-pressure fluid side by a seal area and also angled to discharge the fluid toward the high-pressure fluid side by sliding relative to the mating sealing face, wherein the low-pressure fluid-side end of the first pumping groove is arranged adjacent to the high-pressure fluid-side end of the second pumping groove.
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公开(公告)号：US20180106376A1
公开(公告)日：2018-04-19
申请号：US15842858
申请日：2017-12-14
发明人： Hideyuki INOUE , Takeshi HOSOE , Yuta NEGISHI , Yuichiro TOKUNAGA
CPC分类号： F16J15/342 , F16J15/162 , F16J15/3412
摘要： In an embodiment, a sliding part is provided with a mechanism to generate dynamic pressure by means of relative sliding of a pair of sealing faces of the sliding part, which is characterized in that one sealing face is provided with a land 10 for generating dynamic pressure facing the high-pressure fluid side and a seal area 11 facing the low-pressure fluid side, wherein the land 10 and seal area 11 are positioned away from each other in the radial direction and the areas of the sealing face other than the land 10 and seal area 11 are formed lower than these areas to constitute fluid communication paths 12. The fluid entering the grooves for generating dynamic pressure formed on the sealing face is allowed to circulate.
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