公开(公告)号：US4535967A

公开(公告)日：1985-08-20

申请号：US568460

申请日：1984-01-05

申请人： Brett A. Babbitt ,  Tri C. Le ,  Bruce P. Noble

发明人： Brett A. Babbitt ,  Tri C. Le ,  Bruce P. Noble

IPC分类号： F16K31/122 ,  F16K47/00 ,  F16K31/12

CPC分类号： F16K31/1221 ,  F16K3/186 ,  F16K47/00

摘要： An expanding gate valve (10) provided with a piston type pneumatic powered actuator (40) for opening and closing the valve wherein the actuator piston (54) is adapted to be driven by fluid pressure in one direction to operate the valve but is returned by spring means (63, 64) when the pressure is removed. The actuator includes a hydraulic choke means (71) comprising a hydraulic piston (80) and cylinder (72) wherein the hydraulic piston is fixed to the actuator stem (23) and is provided with an orifice (89) which imposes a constant velocity control on the actuator stroke by producing a throttling effect on the hydraulic fluid moving from one side of the hydraulic piston to the other. The hydraulic cylinder (72) is filled with a fluid which maintains substantially uniform viscosity in the range of minus 40.degree. Centigrade to 204.degree. Centigrade whereby the valve is adapted for consistent operation during rapid cycling conditions. The actuator housing (41, 42) is a sealed unit with the exception of a single opening (69) which exposes one side of the actuator piston (54) to atmospheric pressure but which may serve as an inlet for pressurized fluid to convert the actuator to a double acting piston actuator when the spring force for returning the actuator piston is inadequate.

摘要翻译： 具有用于打开和关闭阀的活塞式气动动力驱动器（40）的膨胀闸阀（10），其中致动器活塞（54）适于由一个方向上的流体压力驱动以操作阀，但由 当压力被去除时，弹簧装置（63,64）。 致动器包括液压扼流装置（71），其包括液压活塞（80）和气缸（72），其中液压活塞固定在致动器杆（23）上并且设置有孔（89），其施加恒定速度控制 在致动器行程上产生对从液压活塞的一侧移动到另一侧的液压流体的节流效果。 液压缸（72）充满流体，该流体在零下40摄氏度到204摄氏度的范围内保持基本上均匀的粘度，由此阀适合在快速循环条件下的一致操作。 致动器壳体（41,42）是密封单元，除了将致动器活塞（54）的一侧暴露于大气压力的单个开口（69）之外，其可以用作加压流体的入口以将致动器 到用于使致动器活塞返回的弹簧力不足时的双作用活塞致动器。

公开(公告)号：US4407516A

公开(公告)日：1983-10-04

申请号：US449353

申请日：1982-12-13

申请人： Tri C. Le ,  Bruce P. Noble

发明人： Tri C. Le ,  Bruce P. Noble

IPC分类号： F16J15/08 ,  F16J15/46 ,  F16J15/06

CPC分类号： F16J15/0887 ,  F16J15/0881 ,  F16J15/46 ,  Y10S285/917

摘要： A pressure energizable sealing connection for establishing a bore seal between first and second coaxially aligned and connected members (22, 10) having opposed internal recesses forming seat pockets at their adjoining ends. The invention comprises a sealing ring (40) having annular end surfaces (56, 54) and an internal diameter which corresponds to the bores of the coaxially aligned members (22, 10), the connection of which is to be sealed. The ring (40) is provided with a pair of circumferential projections (67, 68) separated by a groove (69) therebetween and each having an external surface of arcuate configuration. At their adjoining ends (25, 26) the opposed seat pockets of the adjoining members (22, 10) provide annular cylindrical walls (41, 42) for sealing engagement with the annular projections (67, 68) of the sealing ring (40). The external diameter of the ring (40) is slightly larger than the diameters of the seat pockets so that the resulting interference fit between the ring (40) and the cylindrical walls (41, 42) of the seat pockets provides an initial seal between the projections of the ring (40) and the coaxially connected members (22, 10). The axial dimension of the ring equals the sum of the axial dimensions of the seat pockets so there is no axial compression of the ring by the connected members (22, 10). Fluid pressurization of the coaxially adjoined members results in pressure energization of the sealing ring so that any increase in pressure internally of the connected members results in a greater radial compression of the sealing ring and correspondingly greater sealing forces.

摘要翻译： 一种用于在第一和第二同轴对齐和连接的构件（22,10）之间建立孔密封的可压力可用的密封连接件，其具有在其相邻端部处形成座袋的相对的内部凹槽。 本发明包括具有环形端表面（56,54）的密封环（40）和对应于同轴对准的构件（22,10）的孔的内径，其连接将被密封。 环（40）设置有一对由其间的凹槽（69）分开的每个具有弓形构造的外表面的周向突起（67,68）。 在其相邻的端部（25,26）处，相邻的构件（22,10）的相对的座袋提供用于与密封环（40）的环形突起（67,68）密封接合的环形圆柱形壁（41,42） 。 环（40）的外径稍大于座袋的直径，使得在环（40）和座袋的圆筒壁（41,42）之间产生的过盈配合提供了在第 环（40）和同轴连接构件（22,10）的突起。 环的轴向尺寸等于座椅座的轴向尺寸的总和，所以由连接的构件（22,10）没有环的轴向压缩。 同轴邻接构件的流体加压导致密封环的压力通电，使得连接构件内部的压力的任何增加导致密封环的较大径向压缩和相应更大的密封力。

公开(公告)号：US5158264A

公开(公告)日：1992-10-27

申请号：US660348

申请日：1991-02-22

申请人： Tri C. Le ,  Paul L. Tasson ,  Scott K. Beall

发明人： Tri C. Le ,  Paul L. Tasson ,  Scott K. Beall

IPC分类号： F16K3/18

CPC分类号： F16K3/184

摘要： Apparatus and methods for sealing a parallel expanding gate valve are provided using upper and lower wedges separate from and located between the gate segments. The gate segments are symmetrical with respect to each other and have inner upper and lower tapered surfaces. Inclined surfaces on the upper wedge press the inner upper tapered surfaces of the gate segments. The inner lower tapered surfaces of the gate segments also press against inclined wedging surfaces on the lower wedge. This wedging action forces the gate segments outward with respect to each other and with substantial force against sealing assemblies to close and seal the gate valve.

摘要翻译： 使用与栅极段之间分离并位于栅极段之间的上部和下部楔形物来提供用于密封平行扩大闸阀的装置和方法。 栅极段相对于彼此对称并且具有内部上部和下部锥形表面。 上楔形物上的倾斜表面压迫门段的内上锥形表面。 门段的内下锥形表面也压在下楔形物上的倾斜楔形表面上。 这种楔形作用迫使闸门段相对于彼此向外，并且对密封组件施加相当的力以关闭和密封闸阀。

公开(公告)号：US5114158A

公开(公告)日：1992-05-19

申请号：US615585

申请日：1990-11-19

申请人： Tri C. Le

发明人： Tri C. Le

IPC分类号： E21B33/00 ,  E21B33/03 ,  E21B33/04 ,  F16L55/132

CPC分类号： F16L55/132 ,  E21B33/03 ,  E21B33/04 ,  E21B2033/005

摘要： An improved packing assembly is provided for forming a metal-to-metal sealing engagement between an outer cylindrical surface and an inner cylindrical surface within downhole or surface hydrocarbon recovery equipment having an axially extending flow path therein. The packing assembly includes an outer seal ring and a inner seal ring with upper and lower tapered surfaces, an upper energizing ring and a lower energizing ring each having tapered surfaces for sliding engagement with a tapered surface of the seal rings, and an interconnection member for limiting axial movement of the energizing rings. Projections on each of the seals rings are preferably provided for obtaining substantially line contact sealing engagement with the respective cylindrical surface, and each of these projections is spaced radially opposite and at substantially the same axial depth as a tapered surface on a respective upper or lower energizing ring, such that each of the projections is forced radially into sealing engagement with the corresponding cylindrical surface by a substantially equal force. According to the method of the present invention, the entire assembly is formed and may be lowered downhole to minimize installation costs, and the energizing rings thereafter moved axially together by the application of mechanical or hydraulic force to set the sealing assembly.

摘要翻译： 提供了一种改进的包装组件，用于在井下的外圆柱形表面和内圆柱形表面之间形成金属对金属密封接合，或者在其内具有轴向延伸的流动路径的表面碳氢化合物回收设备。 包装组件包括外密封环和具有上锥形表面和下锥形表面的内密封环，上加力环和下加力环，每个具有锥形表面，用于与密封环的锥形表面滑动接合;以及互连构件， 限制通电环的轴向运动。 优选地，每个密封环上的突出物被设置用于获得与相应的圆柱形表面的基本线接触密封接合，并且这些突起中的每一个在相应的上部或下部激励下与锥形表面径向相对并且基本相同的轴向深度间隔开 使得每个突起通过基本相等的力径向地与相应的圆柱形表面密封接合。 根据本发明的方法，整个组件形成并且可以在井下降低以最小化安装成本，并且通电环随后通过施加机械或液压力而轴向移动以设置密封组件。

公开(公告)号：US5011110A

公开(公告)日：1991-04-30

申请号：US568600

申请日：1990-08-16

申请人： Tri C. Le

发明人： Tri C. Le

IPC分类号： E21B33/06

CPC分类号： E21B33/062

摘要： A blowout preventer is provided with an improved sealing assembly for sealing engagement with a pipe extending through the blowout preventer into a well bore. The sealing assembly includes an elastomeric seal and a plurality of circumferentially spaced metal inserts within the seal for substantially minimizing or preventing extrusion of the seal under high fluid pressure. The BOP be reliably used for sealing engagement with pipes of varying diameters. Each insert has a substantially I-shaped configuration with an upper flange, a lower flange, and a rib fixedly interconnecting the flanges. A slot is provided within at least one of the flanges and forms a cavity for receiving a male interconnecting member extending circumferentially from an adjacent one of the inserts, such that the circumferentially spaced inserts are interconnected to minimize extrusion gaps between the inserts and to better enable the sealing assembly to form a positive seal with the pipe.

公开(公告)号：US5064164A

公开(公告)日：1991-11-12

申请号：US641856

申请日：1991-01-16

申请人： Tri C. Le

发明人： Tri C. Le

IPC分类号： E21B33/06

CPC分类号： E21B33/062

摘要： A blowout preventer is provided with an improved sealing assembly for sealing engagement with a pipe extending through the blowout preventer into a well bore. The sealing assembly includes an elastomeric seal and a plurality of circumferentially spaced metal inserts within the seal for substantially minimizing or preventing extrusion of the seal under high fluid pressure. The BOP be reliably used for sealing engagement with pipes of varying diameters. Each insert has a substantially I-shaped configuration with an upper flange, a lower flange, and a rib fixedly interconnecting the flanges. A slot is provided within at least one of the flanges and forms a cavity for receiving a male interconnecting member extending circumferentially from an adjacent one of the inserts, such that the circumferentially spaced inserts are interconnected to minimize extrusion gaps between the inserts and to better enable the sealing assembly to form a positive seal with the pipe.

摘要翻译： 防喷器设置有改进的密封组件，用于与延伸穿过防喷器的管道密封接合到井眼中。 密封组件包括弹性体密封件和密封件内的多个周向间隔开的金属插入件，用于在高流体压力下基本上最小化或防止密封件的挤出。 BOP可靠地用于与不同直径的管道的密封接合。 每个插入件具有基本上为I形的构造，其具有上凸缘，下凸缘和固定地互连凸缘的肋。 在所述凸缘中的至少一个中设置槽，并且形成用于接收从相邻的所述插入件周向延伸的阳互连构件的空腔，使得周向间隔开的插入件互连以最小化插入件之间的挤压间隙，并且更好地实现 密封组件与管道形成正密封。

公开(公告)号：US4575106A

公开(公告)日：1986-03-11

申请号：US653104

申请日：1984-09-21

申请人： F. Harold Hollister ,  Tri C. Le ,  Danny S. Meyer

发明人： F. Harold Hollister ,  Tri C. Le ,  Danny S. Meyer

IPC分类号： F16J15/08 ,  F16L23/20

CPC分类号： F16L23/20 ,  F16J15/0887

摘要： A high pressure sealing connection for sealing between coaxially aligned members (22, 10) which are connected by metal bolt means having a different coefficient of thermal expansion from the aligned members. The connection comprises a metallic sealing ring (40) having at its largest external diameter a curved arcuate peripheral surface 52 characterized by a center of curvature which is co-diametral with the center of the seal ring but may be of greater or lesser radius than the radius of the ring. At its inner periphery, upper and lower flanges (61, 62) extend inwardly and perpendicularly to the axis of the ring. The coaxially aligned members (22, 10) are provided with recesses defined by opposed internal frusto-conical sealing surfaces (41, 42) at their adjoining ends, each tapering inwardly from the end of the member to an annular shoulder (43, 44) in the bore of the aligned member. The frusto-conical surfaces (41, 42) are of equal taper in the range of 5 degrees to 20 degrees. Drawing the coaxially aligned members together by suitable bolt means (31) results in a compression of ring (40) and a sealing relationship between the ring and the aligned members which is enhanced by fluid pressure energization. The internal flanges (61, 62) significantly increase the elastic zone of the ring to include the flanges themselves which continue to urge the seal ring in sealing engagement with the aligned members even after high pressure or temperatures have caused a deformation of the sealing ring or the aligned members. The curved outer surface of the seal ring in conjunction with the tapered frusto-conical surfaces of the seal grooves permits the points of sealing contact to roll as the geometry changes with differential thermal expansion.

摘要翻译： 用于在同轴对准的构件（22,10）之间进行密封的高压密封连接，其通过金属螺栓装置连接，具有与对准构件不同的热膨胀系数。 连接件包括金属密封环（40），其具有最大的外径，弯曲的弧形外围表面52，其特征在于曲率中心与密封环的中心是共径的，但可以具有比该密封环的中心更大或更小的半径 环的半径。 在其内周缘处，上凸缘和下凸缘（61,62）向内并且垂直于环的轴线延伸。 同轴对齐的构件（22,10）设置有在其相邻端部处由相对的内部截头圆锥形密封表面（41,42）限定的凹部，每个锥形密封表面从构件的端部向内逐渐向内延伸到环形肩部（43,44） 在对准的构件的孔中。 截头圆锥形表面（41,42）在5度至20度的范围内具有相等的锥度。 通过适当的螺栓装置（31）将同轴对齐的构件拉伸在一起，导致环（40）的压缩以及环和对准构件之间的密封关系，这通过流体压力通电而增强。 内部凸缘（61,62）显着地增加了环的弹性区域以包括法兰本身，即使在高压或高温引起密封环的变形或继续推动密封环与对准的构件密封接合之后， 对齐的成员。 密封环的弯曲外表面与密封槽的锥形截头圆锥形表面结合，随着几何形状随热差膨胀的不同而允许密封接触点滚动。

公开(公告)号：US4556224A

公开(公告)日：1985-12-03

申请号：US637994

申请日：1984-08-06

申请人： Tri C. Le

发明人： Tri C. Le

IPC分类号： E21B33/00 ,  E21B33/03 ,  E21B33/08 ,  F16J15/08 ,  F16J15/26 ,  F16J15/18

CPC分类号： F16J15/26 ,  E21B33/03 ,  E21B33/08 ,  F16J15/0887 ,  E21B2033/005

摘要： A crossover seal assembly (44) for sealing the annulus between a well casing (16) and tubing head (22). The assembly includes spaced pairs of upper and lower metal seal rings (60 and 72, 108 and 120) having matching frusto-conical wedging surfaces (70 and 74, 118 and 122) which interact when an axial compressive force is applied to thereby effect a controlled radial expansion of the seal rings to sealingly engage the inner and outer cylindrical surfaces (48, 47) of the tubing head (22) and well casing (16). The axial compressive force is mechanically applied by a plurality of holddown lock screws (90) which interact through tapered conical tips (94) to energize the crossover seal assembly (44).

摘要翻译： 一种用于密封井套管（16）和油管头（22）之间的环的交叉密封组件（44）。 组件包括具有匹配的截头圆锥形楔形表面（70和74,118和122）的上下金属密封环（60和72,108和120）的间隔开的一对，当施加轴向压缩力时相互作用，从而影响 密封环的受控的径向膨胀以密封地接合管头（22）和井套（16）的内圆柱形表面和外圆柱形表面（48,47）。 轴向压缩力通过多个通过锥形锥形尖端（94）相互作用的压紧锁定螺钉（90）而机械地施加，以激励交叉密封组件（44）。

公开(公告)号：US4650226A

公开(公告)日：1987-03-17

申请号：US845912

申请日：1986-03-31

申请人： Brett A. Babbitt ,  Tri C. Le

发明人： Brett A. Babbitt ,  Tri C. Le

IPC分类号： E21B33/04 ,  F16L25/06 ,  F16L19/00

CPC分类号： F16L25/065 ,  E21B33/04

摘要： A holddown screw 10 which features a shank 23 and contact nose 22 of separate construction. The contact nose 22 is provided with a flat bevelled contact surface 32 of predetermined angle to the axis of the screw selected to correspond to the angle of the camming surface 17a with which it is designed to cooperate. The contact nose is carried on the shank 23 and is adapted for relative rotation thereon as the screw is rotated. The back end of the contact nose is provided with an annular surface 22a disposed radially to the longitudinal axis of the screw and adapted to engage an annular shoulder 35 of the shank 23 in flat co-planar relationship therewith. As the screw is rotated and driven inwardly to contact the wellhead component 14 to be actuated, the flat contact surface 32 of the nose of the screw will engage in sliding contact with the cooperating camming surface 17a. Since the contact nose does not rotate against the cooperating camming surface 17 a of the wellhead component and engages over a large contact area, contact stresses are reduced and susceptibility to galling is minimized. The shank 23 includes an externally threaded section 23a adjacent its outer end which receives a packing nut 25. The packing nut 25 is externally threaded whereby it may be threaded into the bore 11 provided in a wellhead structure 12 and used to energize a packing assembly sleeved about the shank 23 by compressing the assembly against a shoulder provided in the bore 11.

摘要翻译： 按压螺钉10，其具有柄23和分离结构的接触鼻22。 接触鼻22设置有与螺杆的轴线成预定角度的平坦的倾斜接触表面32，其被选择为对应于被设计为配合的凸轮表面17a的角度。 接触鼻子被承载在柄23上，并且当螺钉旋转时适合于其上的相对旋转。 接触鼻的后端设置有径向地设置在螺钉的纵向轴线上的环形表面22a，并且适于以平坦的共面关系与柄23的环形肩部35接合。 当螺杆旋转并向内驱动以接触要被致动的井口部件14时，螺钉的鼻部的平坦接触表面32将与配合的凸轮表面17a滑动接触。 由于接触鼻不旋转靠在井口部件的配合的凸轮表面17a上并且接合在大的接触区域上，所以接触应力减小，并且对磨损的敏感性最小化。 柄23包括邻近其外端的外螺纹部分23a，该外螺纹部分接收填料螺母25.填料螺母25是外螺纹的，从而可将螺纹部分螺纹拧入设置在井口结构12中的孔11中，并用于对套筒组件 通过将组件压靠在设置在孔11中的肩部上而围绕柄23。

公开(公告)号：US4650225A

公开(公告)日：1987-03-17

申请号：US846172

申请日：1986-03-31

申请人： Tri C. Le ,  F. Harold Hollister

发明人： Tri C. Le ,  F. Harold Hollister

IPC分类号： E21B33/00 ,  E21B33/04 ,  F16L37/62 ,  F16L19/00

CPC分类号： E21B33/04 ,  F16L37/62 ,  E21B2033/005 ,  Y10S285/92

摘要： A holddown screw assembly 10 which features a shaft 33, an energizer screw 39 and a detachable contact nose 20 adapted to be assembled in coaxial alignment in a radial bore in a wellhead structure. The shaft is provided with a passage 40 extending from its outer end as the holddown screw is normally used in a wellhead installation to a cross passage 41 at the other end of the shaft. Also, at its outer end, a fitting 32 is attached to facilitate connection to a hydraulic supply line 28. An annular bearing flange 35 is provided on the shaft near its outer end. A packing nut 31 and a set of packing rings 34 are sleeved about the shaft 33 with the nut disposed in abutting relation to the bearing flange 35 where it is held fixed but rotatable thereagainst by means 36. The packing nut is threaded into a threaded section of a bore 11 such as may be provided in the flange 12 of a casing spool 13. By turning the packing nut, the packing ring set may be compressed against a shoulder 37 in the bore 11. The energizer screw is also threaded into a threaded section of the bore 11 and is provided with passage means 44 extending in the axial direction therethrough. The contact nose 20 is attached to the energizer screw 39 in a manner which premits a limited axial movement of the contact nose relative to the shaft 33. Accordingly, hydraulic pressure communicated to the outer end of the holddown screw 10 will be communicated through the shaft 33 and energizer screw 39 to be applied against the contact nose 20 to drive it against the object to be held down or seal assembly 14 to be energized. By communication of hydraulic pressure to a plurality of such screws, the screws 10 may be energized simultaneously. For each holddown screw 10 a mechanical connection is provided between the shaft 33 and energizer screw 39 whereby axial rotation of the shaft 33 will effect the threaded advancement of the energizer screw to drive the contact nose and thereby effect a mechanical actuation of the holddown screw. This capability is available as an alternative to hydraulic means of energizing the holddown screw 10 and also as a means for mechanically retaining the preload after it has been applied hydraulically.