公开(公告)号：WO2014172189A1

公开(公告)日：2014-10-23

申请号：PCT/US2014/033736

申请日：2014-04-11

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F02C7/28 ,  F01D11/02 ,  F16J15/16 ,  F16J15/44

CPC classification number: F16C32/0662 ,  F01D11/04 ,  F01D25/22 ,  F05D2250/75 ,  F16C32/0607 ,  F16C32/0625 ,  F16C2360/23 ,  F16J15/40 ,  F16J15/441 ,  F16J15/442

Abstract: A circumferential seal assembly (1) capable of separating a gas into two separate flow paths before communication onto a pair of seal rings (3, 4) is presented. The seal assembly (1) includes an annular seal housing (2), a pair of annular seal rings (3, 4), a rotatable runner (15), and a plurality of groove structures (17). The seal housing (2) is interposed between a pair of low pressure compartments (5, 6). The seal rings (3, 4) are separately disposed within the seal housing (2) and separately disposed around the rotatable runner (15). The groove structures (17) are disposed along an outer circumferential surface (16) of the rotatable runner (15). The gas is communicable onto the groove structures (17). Each groove structure (17) bifurcates the gas before communication onto the seal rings (3, 4). Flow within each groove structure (17) may be further separable before the gas is communicated onto the seal rings (3, 4). The gas forms a thin-film layer (20) between the rotatable runner (15) and each seal ring (3, 4).

Abstract translation: 提供了能够在与一对密封环（3,4）通信之前将气体分离成两个单独的流动路径的圆周密封组件（1）。 密封组件（1）包括环形密封壳体（2），一对环形密封环（3,4），可旋转浇道（15）和多个凹槽结构（17）。 密封壳体（2）插入在一对低压室（5,6）之间。 密封环（3,4）分别设置在密封壳体（2）内并且分开设置在可旋转的流道（15）周围。 凹槽结构（17）沿着可旋转滑轮（15）的外圆周表面（16）设置。 气体可连通到凹槽结构（17）上。 每个凹槽结构（17）将通气之前的气体分叉到密封环（3,4）上。 在气体连通到密封环（3,4）之前，每个凹槽结构（17）内的流动可以进一步分离。 气体在可旋转的流道（15）和每个密封环（3,4）之间形成薄膜层（20）。

公开(公告)号：WO2016179608A2

公开(公告)日：2016-11-10

申请号：PCT/US2016/033165

申请日：2016-05-19

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F01D11/00 ,  F01D25/16 ,  F16J15/44

CPC classification number: F01D11/003 ,  F01D25/16 ,  F05D2220/30 ,  F05D2240/55 ,  F05D2240/60 ,  F16J15/441 ,  F16J15/442 ,  F16J15/443

Abstract: An intershaft seal assembly (30) for use between an inner shaft (32) and an outer shaft (31) rotatable within a turbine engine is presented. The seal assembly (30) includes a sealing ring (33), an inner ring (39), and a pair of end rings (37, 38). The sealing ring (33) further includes a plurality of asymmetric ring segments (34) whereby each asymmetric ring segment (34) further includes a vertical flange (46) and a pair of horizontal flanges (47) extending from the vertical flange (46) in a non-symmetric arrangement. The non- symmetric seal geometry provides an axial force balance thereby reducing wear and increasing seal life. The sealing ring (33) is disposed about the inner ring (39). The inner ring (39) includes a plurality of ridges (43) that engage the asymmetric ring segments (34) so as to prevent rotation of the asymmetric ring segments (34) with respect to the inner shaft (32). The end rings (37, 38) are disposed about the sealing ring (33) and the inner ring (39). The horizontal flanges (47) separately contact the end rings (37, 38) so that the vertical flange (46) extends from and between the end rings (37, 38) in the direction of the outer shaft (31). A non-contact seal is formed between an outer sealing surface (62) along the vertical flange (46) and an inner sealing surface (63) along the outer shaft (31).

Abstract translation: 提出了一种用于在涡轮发动机内旋转的内轴（32）和外轴（31）之间的轴间密封组件（30）。 密封组件（30）包括密封环（33），内环（39）和一对端环（37,38）。 密封环（33）还包括多个不对称环段（34），由此每个不对称环段（34）还包括垂直凸缘（46）和从垂直凸缘（46）延伸的一对水平凸缘（47） 在非对称的布置。 非对称密封几何形状提供轴向力平衡，从而减少磨损并增加密封寿命。 密封环（33）围绕内圈（39）设置。 内环（39）包括与不对称环段（34）接合以便防止不对称环段（34）相对于内轴（32）旋转的多个脊（43）。 端环（37,38）围绕密封环（33）和内环（39）设置。 水平凸缘（47）分别接触端环（37,38），使得垂直凸缘（46）沿着外轴（31）的方向从端环（37,38）中和之间延伸。 在沿着垂直凸缘（46）的外密封表面（62）和沿着外轴（31）的内密封表面（63）之间形成非接触式密封。

公开(公告)号：WO2012036684A1

公开(公告)日：2012-03-22

申请号：PCT/US2010/049030

申请日：2010-09-16

Applicant: STEIN SEAL COMPANY ,  GARRISON, Glenn, M.

Inventor： GARRISON, Glenn, M.

IPC: F16C32/06

CPC classification number: F16C17/045 ,  F01D11/00 ,  F01D25/22 ,  F16J15/3412 ,  F16J15/342 ,  Y10T137/0318

Abstract: An intershaft seal system (29) capable of communicating a balanced pressure profile onto a forward face (50) and/or an aft face (49) along a piston ring (35) is presented. The intershaft seal system (29) includes forward and aft mating rings (33, 34) and a piston ring (35). One or both mating rings (33, 34) could include a plurality of divergent flow grooves (47) adjacent to the piston ring (35). Each divergent flow groove (47) includes a pair of grooves (27, 28) which intersect at and are substantially symmetric about an apex (48). The piston ring (35) includes channels (53) which direct a fluid from a high pressure region upward, downward, or directly through the piston ring (35) and onto the divergent flow grooves (47). The divergent flow grooves (47) separate the fluid in a symmetrically divergent fashion prior to communication onto the piston ring (35). The divergent flow grooves (47) communicate a substantially symmetric pressure force along the radial width (W p ) of the piston ring (35) so as to minimize twisting thereof, thus reducing wear along the piston ring (35) and increasing seal life.

Abstract translation: 提出了能够沿着活塞环（35）将平衡压力分布传递到前表面（50）和/或后表面（49）上的轴间密封系统（29）。 轴向间密封系统（29）包括前后配合环（33,34）和活塞环（35）。 一个或两个配合环（33,34）可以包括与活塞环（35）相邻的多个发散流动槽（47）。 每个发散流动槽（47）包括在顶点（48）处相交且基本对称的一对凹槽（27,28）。 活塞环（35）包括通道（53），其将流体从高压区域向上，向下或直接通过活塞环（35）引导到发散流动槽（47）上。 发散流槽（47）在与活塞环（35）连通之前以对称发散的方式分离流体。 发散流动槽（47）沿着活塞环（35）的径向宽度（Wp）传递基本上对称的压力，以使其扭转最小化，从而减少沿着活塞环（35）的磨损并增加密封寿命。

公开(公告)号：WO2020014123A1

公开(公告)日：2020-01-16

申请号：PCT/US2019/040807

申请日：2019-07-08

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F16C32/06 ,  F16J15/44 ,  F16J15/40 ,  F01D25/22 ,  F01D11/04

Abstract: An intershaft seal assembly (2) for maintaining separation between a piston ring (3) and a pair of mating rings (4, 5) is presented. The assembly includes a piston ring (3) interposed between forward and aft mating rings (4, 5) and a plurality of hydrodynamic grooves (18) disposed along a sealing face (11, 12) of each mating ring (4, 5). Each hydrodynamic groove (18) further includes at least two adjoining steps (23) wherein each step (23) is defined by a base wall (24) arranged to decrease depthwise in the direction opposite to rotation of an inner shaft (8). Two adjoining base walls (24) define a base shoulder (25) which locally redirects potion of a longitudinal flow (32) within the groove to form an outward flow (30) in the direction of the piston ring (3). Base walls (24) are bounded by and intersect a pair of side walls (26) with at least one side shoulder (27) thereon which narrows the groove (18) widthwise and locally redirects portion of the longitudinal flow (32) to form a lateral flow (31) from one side wall (26) toward another side wall (26). Outward and lateral flows (30, 31) cooperate, with or without the longitudinal flow (32), to increase fluid pressure and maintain separation between the piston ring (3) and the mating rings (4, 5)·

公开(公告)号：WO2018203892A1

公开(公告)日：2018-11-08

申请号：PCT/US2017/030834

申请日：2017-05-03

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F01D11/00 ,  F16J15/16

Abstract: A circumferential seal assembly (30) for use between a higher pressure side (36) and a lower pressure side (37) is presented. The seal assembly (30) includes a primary sealing ring (31), a second sealing ring (32), a third sealing ring (33), and an insert (34). The segmented primary sealing ring (31) sealingly engages both a face sealing surface (46) along a housing (35) and a radial sealing surface (45) along a rotatable element (52). The insert (34) is disposed within and directly contacts the housing (35). The second sealing ring (32) is adjacent to the primary sealing ring (31) and sealingly engages both the primary sealing ring (31) and the insert (34). The segmented third sealing ring (33) contacts and sealingly engages the primary sealing ring (31) opposite the housing (35). The insert (34), the second sealing ring (32), and the third sealing ring (33) cooperate to form a first cavity (53) adjacent to the second sealing ring (32) and the third sealing ring (33). The primary sealing ring (31), the second sealing ring (32), the insert (34), and the housing (35) cooperate to form a second cavity (54) adjacent to the primary sealing ring (31). The insert (34) and the second sealing ring (32) separate the first cavity (53) from the second cavity (54).

公开(公告)号：WO2017040133A1

公开(公告)日：2017-03-09

申请号：PCT/US2016/048309

申请日：2016-08-24

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F16C32/06

CPC classification number: F16C32/0662 ,  F01D11/04 ,  F01D25/22 ,  F05D2250/75 ,  F16C32/0607 ,  F16C32/0625 ,  F16C2360/23 ,  F16J15/40 ,  F16J15/441 ,  F16J15/442

Abstract: A circumferential seal assembly (1 or 21) capable of separating a gas into two separate flow paths before communication between a rotatable runner (15 or 35) and a pair of seal rings (3, 4 or 23, 24) is presented. The seal assembly (1 or 21) includes an annular seal housing (2 or 22), a pair of annular seal rings (3, 4 or 23, 24), a rotatable runner (15 or 25), and a plurality of groove structures (17, 37, 41 or 55). The seal housing (2 or 22) is interposed between a pair of compartments (5, 6 or 58, 59). The seal rings (3, 4 or 23, 24) are separately disposed within the seal housing (2 or 22) and separately disposed around the rotatable runner (15 or 35). The groove structures (17, 37, 41 or 55) are disposed along an outer annular surface (16 or 36) of the rotatable runner (15 or 35). A gas is communicable onto the groove structures (17, 37, 41 or 55). Each groove structure (17, 37, 41 or 55) includes at least two hydrodynamic grooves (19, 38, 43, or 49) that separate and communicate the gas onto the seal rings (3, 4 or 23, 24). Each groove (19, 38, 43, or 49) includes steps (62) whereby the depth (h) of at least one adjoining step (62) decreases in the direction opposite to rotation with or without the depth (h) of another adjoining steps (62) increasing in the direction opposite to rotation.

Abstract translation: 呈现在可旋转的流道（15或35）和一对密封环（3,4或23,24）之间的连通之前能够将气体分离成两个单独流动路径的圆周密封组件（1或21）。 密封组件（1或21）包括环形密封壳体（2或22），一对环形密封环（3,4或23,24），可旋转浇道（15或25）和多个凹槽结构 （17,37,41或55）。 密封壳体（2或22）插入在一对隔室（5,6或58,59）之间。 密封环（3,4或23,24）分别设置在密封壳体（2或22）内并且分开设置在可旋转的流道（15或35）周围。 凹槽结构（17,37,41或55）沿着可旋转的流道（15或35）的外环形表面（16或36）设置。 气体可以连通到凹槽结构（17,37,41或55）上。 每个凹槽结构（17,37,41或55）包括至少两个将气体分离并连通到密封环（3,4或23,24）上的流体动力槽（19,38,43或49）。 每个凹槽（19,38,43或49）包括步骤（62），由此至少一个相邻台阶（62）的深度（h）在与或不相邻的另一邻接台阶（62）的深度（h）相反的方向上减小 台阶（62）在与旋转相反的方向上增加。

公开(公告)号：WO2014088608A1

公开(公告)日：2014-06-12

申请号：PCT/US2013/021214

申请日：2013-01-11

Applicant: STEIN SEAL COMPANY ,  GARRISON, Glenn, M.

Inventor： GARRISON, Glenn, M.

IPC: F01D11/12 ,  F02C7/28 ,  F01D11/08

CPC classification number: F01D11/02 ,  F01D25/183 ,  F05D2250/314 ,  F05D2260/98

Abstract: The disclosure describes a windback device for a circumferential seal within a turbine engine. The windback device includes an annular collar (11) at one end of an annular fluid seal housing (8), at least one inclined thread (27), and a plurality of inclined baffles (42) separately disposed along an outer circumferential surface (44) of a rotatable runner (5). The housing (8) is adapted at another end for an annular seal (18). The collar (11) has an opening (25) therethrough sized to receive the runner (5) without contact. The annular seal (18) surrounds and sealingly engages the runner (5). The threads (27) extend from an inner face (26) of the collar (11) toward the runner (5). The baffles (42) are separately recessed in or raised above the outer circumferential surface (44) of the runner (5). The baffles (42) are interposed between the runner (5) and threads (27). Each baffle (42) is separated from the threads (27) via a radial clearance. Threads (27) and baffles (42) direct lubricant away from the annular seal (18).

Abstract translation: 本公开描述了一种用于涡轮发动机内周向密封的回卷装置。 回卷装置包括在环形流体密封壳体（8）的一端处的环形套环（11），至少一个倾斜螺纹（27）和沿着外周表面（44）分开设置的多个倾斜挡板（42） ）可转动的转轮（5）。 壳体（8）在另一端适于环形密封（18）。 套环（11）具有穿过其开口（25）的尺寸以不接触流道（5）。 环形密封件（18）围绕并密封地接合流道（5）。 螺纹（27）从套环（11）的内表面（26）朝向流道（5）延伸。 挡板（42）分别凹入到浇道（5）的外圆周表面（44）上或上方。 挡板（42）插入在流道（5）和螺纹（27）之间。 每个挡板（42）经由径向间隙与螺纹（27）分离。 螺纹（27）和挡板（42）使润滑剂远离环形密封件（18）。

公开(公告)号：WO2021150375A1

公开(公告)日：2021-07-29

申请号：PCT/US2021/012398

申请日：2021-01-07

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F16C32/06 ,  F01D25/22 ,  F16J15/40 ,  F01D11/04 ,  F16J15/44

Abstract: A circumferential seal assembly (87) suitable for forming a thin film between a rotatable runner (15, 35, 67) and a sealing ring (3, 4, 23, 24) is presented. The assembly (87) includes an annular seal housing (2, 22), a rotatable runner (15, 35, 67), an annular seal ring (3, 4, 23, 24), and a plurality of groove structures (66). Each groove structure (66) includes a groove (69) and an optional feed groove (70). The groove (69) includes at least two adjoining steps (71) defined by base walls (72) arranged to decrease depthwise. Two adjoining base walls (72) are disposed about a base shoulder (73). Each base shoulder (73) locally redirects a longitudinal flow (80) to form an outward radial flow (78) in the direction of the annular seal ring (3, 4, 23,24). The base walls (72) are bounded by and intersect a pair of side walls (74). A side wall (74) includes at least one side shoulder (75) which narrows the groove (69) widthwise and locally redirects the longitudinal flow (80) to form a lateral flow (79) in the direction of the other side wall (74). Outward and lateral flows (78, 79) separately or in combination enhance stiffness of a thin-film layer (20) between the annular seal ring (3, 4, 23, 24) and the rotatable runner (15, 35, 67).

公开(公告)号：WO2020013950A1

公开(公告)日：2020-01-16

申请号：PCT/US2019/037153

申请日：2019-06-14

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

IPC: F16C32/06 ,  F16J15/44 ,  F16J15/40 ,  F01D25/22 ,  F01D11/04

Abstract: A circumferential seal assembly (1 or 21) capable of dividing a gas into separate flow paths before communication between a rotatable runner (15, 35, or 67) and a pair of seal rings (3, 4 or 23, 24) is presented. The assembly (1 or 21) includes an annular seal housing (2 or 22), a rotatable runner (15, 35, or 67), a pair of annular seal rings (3, 4 or 23, 24), and a plurality of groove structures (66). Each groove structure (66) separates a source flow (83) communicated into a feed groove (70) so that a portion enters at least two grooves (69) to form a longitudinal flow (80) therein. Each groove (69) includes at least two adjoining steps (71) defined by base walls (72). The base walls (72) are arranged along the groove (69) to decrease depth wise opposite to rotation of the rotatable runner (15, 35, or 67). Two adjoining base walls (72) are disposed about a base shoulder (73). Each base shoulder (73) locally redirects the longitudinal flow (80) to form an outward radial flow (78) in the direction of one annular seal ring (3, 4 or 23, 24). The base walls (72) are bounded by and intersect a pair of side walls (74). Each side wall (74) includes at least one side shoulder (75) which narrows the groove (69) width wise and locally redirects the longitudinal flow (80) away from the side wall (74) to form a lateral flow (79) in the direction of the other side wall (74). Each reduction to the volume of the gas at the downstream end of each groove structure (66) increases pressure and enhances the stiffness of a thin-film layer (20) between each annular seal ring (3, 4 or 23, 24) and the rotatable runner (15, 35, or 67).

公开(公告)号：WO2016168870A2

公开(公告)日：2016-10-20

申请号：PCT/US2016/044615

申请日：2016-07-29

Applicant: STEIN SEAL COMPANY

Inventor： GARRISON, Glenn, M.

CPC classification number: F01D11/003 ,  F01D11/02 ,  F05D2240/58 ,  F05D2250/73

Abstract: An intershaft seal assembly (30) for use between an inner shaft (32) and an outer shaft (31) within a turbine engine is presented. The seal assembly (30) includes a sealing ring (33), centrifugal retaining plates (102), and end rings (37, 38). The sealing ring (33) further includes a plurality of asymmetric ring segments (34) whereby each asymmetric ring segment (34) further includes a vertical flange (46) and horizontal flanges (47) extending from the vertical flange (46) in a non-symmetric arrangement. At least one slot (104) is disposed along each horizontal flange (47). The sealing ring (33) is interposed between the centrifugal retaining plates (102). Each centrifugal retaining plate (102) includes a plurality of tabs (103) extending therefrom. Each tab (103) is engaged by one slot (104). The sealing ring (33) and the centrifugal retaining plates (102) are interposed between the end rings (37, 38). Each centrifugal retaining plate (102) is directly interposed between one horizontal flange (47) and one end ring (37, 38). The vertical flange (46) extends from between the end rings (37, 38) in the direction of the outer shaft (31). A non-contact seal is formed between an outer sealing surface (62) along the vertical flange (46) and an inner sealing surface (63) along the outer shaft (31).

Abstract translation: 提出了一种在涡轮发动机内的内轴（32）和外轴（31）之间使用的轴间密封组件（30）。 密封组件（30）包括密封环（33），离心保持板（102）和端环（37,38）。 密封环（33）还包括多个不对称环段（34），由此每个不对称环段（34）还包括垂直凸缘（46）和水平凸缘（47），该凸缘从垂直凸缘（46） 对称排列。 至少一个槽（104）沿着每个水平凸缘（47）设置。 密封环（33）介于离心保持板（102）之间。 每个离心保持板（102）包括从其延伸的多个突片（103）。 每个翼片（103）由一个槽（104）接合。 密封环（33）和离心保持板（102）插入在端环（37,38）之间。 每个离心保持板（102）直接插入在一个水平凸缘（47）和一个端环（37,38）之间。 垂直凸缘46沿着外轴（31）的方向从端环（37,38）之间延伸。 在沿着垂直凸缘（46）的外密封表面（62）和沿着外轴（31）的内密封表面（63）之间形成非接触式密封。