公开(公告)号：US4610452A

公开(公告)日：1986-09-09

申请号：US752694

申请日：1985-07-08

申请人： Keith A. DiRienz

发明人： Keith A. DiRienz

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/34

CPC分类号： E21B10/25 ,  F16J15/3456

摘要： Sealed bearing rotary cone rock bits that utilize a standard belleville seal oftentimes require that the static side of the seal be secured to a junction formed between a shirttail portion and a journal of a leg of the rock bit. A metal ring on the static side of the belleville seal is secured to the junction between the journal and the shirttail portion of the leg and imposes a load on the inner diameter of an encapsulated belleville spring. By preloading the inner diameter of the belleville spring, the load on the spring continues to increase as the spring is deflected during use. The present invention utilizes an isolated encapsulated belleville spring such that the inner diameter of the belleville spring is not trapped between the metallic ring on the static side of the seal. The result is that as the deflection of the spring is increased under operating conditions, the load reaches a peak value and then begins to decrease. The belleville spring in the isolated state thus can endure large amounts of wear with little or no loss in load or contact pressure.

摘要翻译： 使用标准贝尔维尔密封件的密封轴承旋转锥形岩石钻头通常需要将密封件的静态侧固定到形成在钻头部分和钻头的腿部的轴颈之间的连接处。 贝尔维尔密封件的静态侧上的金属环固定到轴颈和腿部的衬衫尾部之间的接合处，并且对包封的贝氏弹簧的内径施加负载。 通过预加载贝氏弹簧的内径，当弹簧在使用期间偏转时，弹簧上的负载继续增加。 本发明利用隔离的囊封弹簧，使得贝氏弹簧的内径不会被捕获在密封件的静态侧上的金属环之间。 结果是由于在操作条件下弹簧的偏转量增加，所以负载达到峰值，然后开始减小。 因此，隔离状态下的贝尔维尔弹簧可承受大量的磨损，负载或接触压力很小或没有损失。

公开(公告)号：US4560175A

公开(公告)日：1985-12-24

申请号：US628068

申请日：1984-07-05

申请人： Nareshchandra J. Kar ,  Cary A. Roth

发明人： Nareshchandra J. Kar ,  Cary A. Roth

IPC分类号： B23K26/28 ,  E21B10/22 ,  E21B10/25 ,  F16C33/78 ,  F16J15/32 ,  F16J15/34 ,  F16C19/49

CPC分类号： E21B10/25 ,  B23K26/28 ,  F16C33/72 ,  F16C33/78 ,  F16J15/3276 ,  F16J15/3456 ,  F16C2352/00

摘要： This invention relates to a belleville seal for a sealed bearing rotary cone rock bit. The inner static ring portion of the annular belleville seal is metal and is interference fitted over the base of a journal bearing. The separation joint formed between the inner diameter of the static ring portion of the belleville seal and the outside diameter of the journal bearing is circumferentially welded using a high-energy beam source to form a hermetically sealed metallurgical bond therebetween.

摘要翻译： 本发明涉及用于密封轴承旋转锥形钻头的贝尔维尔密封件。 环形密封圈的内部静环部分是金属的，并且被过盈配合在轴颈轴承的基座上。 在贝氏密封件的静环部分的内径和轴颈轴承的外径之间形成的分离接头使用高能束源周向地焊接，以在它们之间形成气密密封的冶金结合。

公开(公告)号：US4429854A

公开(公告)日：1984-02-07

申请号：US444549

申请日：1982-11-26

申请人： Nareshchandra J. Kar ,  Rao R. Nimmagadda

发明人： Nareshchandra J. Kar ,  Rao R. Nimmagadda

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/16 ,  F16J15/32 ,  E21B10/08

CPC分类号： E21B10/25 ,  F16J15/164 ,  F16J15/32 ,  Y10S277/91 ,  Y10S277/931

摘要： A resilient O-ring shaft seal for use in a rotary rock bit is described wherein the degree of squeeze imposed upon the O-ring seal is increased in one or more discrete steps, occurring as drilling conditions or bearing deterioration cause rising temperatures to be imposed on the seal. The squeeze is increased in discrete steps through a thermally related shape change in one or more nitinol, or the like, back up rings positioned adjacent to the packing ring seal housed within a seal gland. The seal gland is formed between a rock bit journal and a rock cutter cone rotatably mounted to the journal.

摘要翻译： 描述了一种用于旋转岩石钻头的弹性O型圈轴密封件，其中施加在O形圈密封件上的挤压程度在一个或多个离散步骤中增加，当钻井条件或轴承变形导致施加升高的温度时发生 在印章上。 通过在一个或多个镍钛诺等中的热相关的形状变化，挤压在离散的步骤中增加，所述相邻的形状改变位于与容纳在密封压盖内的密封环密封件相邻的位置。 密封盖形成在岩石钻头轴颈和可旋转地安装到轴颈上的岩石切割器锥体之间。

公开(公告)号：US4289321A

公开(公告)日：1981-09-15

申请号：US15597

申请日：1979-02-27

申请人： Douglas A. Cather, Jr.

发明人： Douglas A. Cather, Jr.

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/32

CPC分类号： E21B10/25 ,  F16J15/3208 ,  F16J15/3284

摘要： A shaft seal 10 and method, for use, for example with a rotary drill bit in the oil patch industry, including an annular metal ring 12, an annular elastomeric body 14 and a polytetrafluoroethylene liner 16. The seal 10 has an axially inwardly extending lubricant lip 18 and an axially outwardly extending mud lip 20. When the pressure of the lubricant exceeds a particular value for which the seal is designed (for example, in the range of 100-200 psi), the pressure causes the lubricant lip 18 to reverse direction and allow lubricant to be purged and flow axially outwardly past both lips, until its pressure is reduced after which the lubricant lip 18 returns (flips back) to it original position. During purging, the mud lip 20 acts as a restricted opening controlling purging and excluding drilling mud.

摘要翻译： 轴密封件10和方法，用于例如在油贴工业中的旋转钻头，包括环形金属环12，环形弹性体14和聚四氟乙烯衬垫16.密封件10具有轴向向内延伸的润滑剂 唇缘18和轴向向外延伸的泥浆唇20.当润滑剂的压力超过设计密封件的特定值（例如，在100-200psi的范围内）时，压力导致润滑剂唇缘18反转 方向，并允许润滑剂被吹扫并且轴向向外流过两个嘴唇，直到其压力降低，之后润滑剂唇缘18返回（翻转）到其初始位置。 在清洗期间，泥浆唇20用作控制清洗的限制开口，不包括钻井泥浆。

公开(公告)号：US4256351A

公开(公告)日：1981-03-17

申请号：US963630

申请日：1978-11-24

申请人： James W. Langford, Jr.

发明人： James W. Langford, Jr.

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/32 ,  F16C33/72

CPC分类号： E21B10/25 ,  F16J15/3208

摘要： A sealing system acts as a barrier to the drilling fluid, pulverized cuttings and other materials in the borehole preventing the materials from entering the bearing area of an earth boring bit and retains lubricant inside the bearing area. At least one bearing pin extends from the body of an earth boring bit and a rolling cone cutter is mounted on the bearing pin. A seal assembly is located in the mouth of the cutter between the cutter and the bearing pin. The seal assembly includes an annular rigid ring, an elastomeric ring and a deformable ring means mounted to rotate with said rolling cone cutter. The elastomeric ring is attached to the annular rigid ring. The elastomeric ring has a lip with a wiping surface that contacts the bearing pin. The deformable ring means is connected to the lip and maintains contact between the wiping surface and the bearing pin.

摘要翻译： 密封系统作为钻井液，粉碎的切屑和钻孔中的其他材料的屏障，防止材料进入钻孔的轴承区域，并将润滑剂保留在轴承区域内。 至少有一个轴承销从地镗头的主体延伸出来，滚动圆锥切割器安装在轴承销上。 密封组件位于切割器和轴承销之间的切割器口部。 密封组件包括环形刚性环，弹性体环和安装成与所述滚动圆锥切割器一起旋转的可变形环形装置。 弹性体环附接到环形刚性环。 弹性体环具有唇部，其具有与轴承销接触的擦拭表面。 可变形环装置连接到唇缘并保持擦拭表面和支承销之间的接触。

公开(公告)号：US4249622A

公开(公告)日：1981-02-10

申请号：US47416

申请日：1979-06-11

申请人： Theodore R. Dysart

发明人： Theodore R. Dysart

IPC分类号： E21B10/22 ,  E21B10/24 ,  E21B10/25

CPC分类号： E21B10/25 ,  E21B10/24

摘要： A rolling cone cutter earth boring bit is provided with a floating seal for sealing the bearings of the bit from the abrasive materials in the borehole and retaining lubricant within the bearing area. At least one cantilevered bearing pin extends from the arm of the bit. A cutter receiving surface is located on the arm. A first shallow annular groove is located in said cutter receiving surface. A rolling cone cutter is adapted to be rotatably mounted on the bearing pin with said rolling cone cutter having a cone mouth. A second shallow annular groove is located within said cone mouth. Bearing and cutter retaining means are located between the bearing pin and the cone cutter. A first seal unit is positioned around the bearing pin between the cutter receiving surface and the rolling cone cutter. The first seal unit includes a first annular rigid ring positioned around the bearing pin and a first resilient ring located in the first shallow annular groove between the first annular rigid ring and the cutter receiving surface. A second seal unit is positioned around the bearing pin and located within the cone mouth. The second seal unit includes a second annular rigid ring positioned around the bearing pin within the cone mouth and a second resilient ring located in the second shallow annular groove between the second annular rigid ring and the cone mouth. The first and second seal units cooperate when the rolling cone cutter is mounted on the bearing pin so that the first and second resilient rings urge the first and second annular rigid rings into sliding contact as the cone cutter rotates about the bearing pin.

摘要翻译： 滚动圆锥切割器钻孔钻具有浮动密封，用于将钻头的轴承与钻孔中的研磨材料密封并将润滑剂保持在轴承区域内。 至少一个悬臂轴承销从钻头臂伸出。 刀具接收表面位于臂上。 第一浅环形槽位于所述刀具接收表面中。 滚动锥形切割器适于可旋转地安装在轴承销上，所述滚动锥形切割器具有锥形口。 第二浅环形槽位于所述锥形口内。 轴承和刀具保持装置位于轴承销和锥形切割器之间。 第一密封单元位于切割器接收表面和滚动切割器之间的轴承销周围。 第一密封单元包括围绕轴承销定位的第一环形刚性环和位于第一环形刚性环和切割器接收表面之间的第一浅环形槽中的第一弹性环。 第二密封单元定位在轴承销周围并且位于锥形口内。 第二密封单元包括围绕锥形口内的轴承销定位的第二环形刚性环和位于第二环形刚性环和锥形口之间的第二浅环形槽中的第二弹性环。 当滚动锥形切割器安装在轴承销上时，第一和第二密封单元配合，使得当锥形切割器围绕轴承销旋转时，第一和第二弹性环将第一和第二环形刚性环推动成滑动接触。

公开(公告)号：US4235480A

公开(公告)日：1980-11-25

申请号：US969005

申请日：1978-12-13

申请人： Armin Olschewski ,  Heinrich Kunkel ,  Manfred Brandenstein ,  Lothar Walter

发明人： Armin Olschewski ,  Heinrich Kunkel ,  Manfred Brandenstein ,  Lothar Walter

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/34 ,  F16C19/00 ,  F16C33/76

CPC分类号： E21B10/25 ,  F16J15/3452

摘要： A sliding seal ring for a drill bit comprising at least one cutter rotatably mounted on a journal forming part of the drill bit body. The seal ring is made of elastic metallic strip material and is of spiral configuration with the spirals in overlapping relation. The seal ring is mounted under axial tension between the pocket in an edge ring and the drill bit body and rotates with the cutter. In one form of the invention, the spirals are in abutting relation to provide a complete seal. In another form the spirals are open to define gaps permitting flow of flushing liquid to cool and lubricate the bearings supporting the cutter on the trunnion.

摘要翻译： 一种用于钻头的滑动密封环，包括可旋转地安装在形成钻头体的一部分的轴颈上的至少一个切割器。 密封环由弹性金属条材料制成，呈螺旋形，螺旋形重叠。 密封圈安装在边缘环的凹槽和钻头体之间的轴向张力下，并与切割器一起旋转。 在本发明的一种形式中，螺旋处于邻接关系以提供完整的密封。 在另一种形式中，螺旋开口以限定允许冲洗液体流动的间隙，以冷却并润滑支撑在耳轴上的切割器的轴承。

公开(公告)号：US4214764A

公开(公告)日：1980-07-29

申请号：US959798

申请日：1978-11-13

申请人： Giulio Fava

发明人： Giulio Fava

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/34 ,  F16H15/34

CPC分类号： E21B10/25 ,  F16J15/3452 ,  F16J15/3456

摘要： A sealing device arranged to provide the seal for a fluid, in particular a liquid, between an ambient and the inside of a cavity comprised between a stationary member and a rotating member is described.The main feature of this sealing device is that it comprises two annular sealing elements, each of which has a plane annular surface substantially orthogonal to the axis of rotation of the rotating member and a cylindrical side surface orthogonal to the said plane annular surface, one of the said sealing elements being rigidly connected to the stationary member and the other to the rotating member, the said two plane annular surfaces being coupled and axial thrust means being provided which are arranged to keep coupled the said plane annular surfaces with a predetermined pressure, the said two cylindrical side surfaces of the two sealing elements having the same diameter and being substantially coincident.

摘要翻译： 描述了一种密封装置，其被设置用于在包围在固定构件和旋转构件之间的腔室的环境和内部之间提供用于流体，特别是液体的密封件。 该密封装置的主要特征是它包括两个环形密封元件，每个环形密封元件具有基本上垂直于旋转件的旋转轴线的平面环形表面和与所述平面环形表面正交的圆柱形侧表面， 所述密封元件刚性地连接到固定构件，而另一个紧固到旋转构件，所述两个平面环形表面是联接的，并且提供轴向推力装置，其被布置成以预定压力保持联接所述平面环形表面， 所述两个密封元件的两个圆柱形侧表面具有相同的直径并且基本上重合。

公开(公告)号：US4176848A

公开(公告)日：1979-12-04

申请号：US920862

申请日：1978-06-30

申请人： David S. Lafuze

发明人： David S. Lafuze

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/34 ,  F16J15/16

CPC分类号： E21B10/25 ,  F16J15/344 ,  F16J15/3496 ,  Y10S277/91

摘要： A rolling cone cutter earth boring bit is provided with a seal assembly for sealing the bearings of the bit from the abrasive materials in the borehole and retaining lubricant within the bearing area. A rolling cone cutter is rotatably mounted on a cantilevered bearing pin extending from the bit body. A first seal receiving surface is located on said bearing pin. The first seal receiving surface has a first corner. A second seal receiving surface is located on said rolling cone cutter. The second seal receiving surface has a second corner. The seal assembly includes first and second seal units. The first seal unit comprises a first annular substantially rigid ring and a first substantially resilient ring positioned between said bearing pin and said rolling cone cutter. The first resilient ring is positioned in said first corner. The second seal unit comprises a second annular substantially rigid ring and a second substantially resilient ring positioned between said bearing pin and said rolling cone cutter. The second resilient ring is positioned in said second corner. The sliding interface between said first and second annular substantially rigid rings is inclined with respect to said bearing pin. The first and second substantially rigid rings are made of materials such as Teflon, nylon, plastic, metal or other substantially rigid materials.

摘要翻译： 滚动圆锥切割器钻孔钻具有密封组件，用于将钻头的轴承与钻孔中的研磨材料密封并将润滑剂保持在轴承区域内。 滚动圆锥切割器可旋转地安装在从钻头体延伸的悬臂轴承销上。 第一密封件接收表面位于所述轴承销上。 第一密封接收表面具有第一角。 第二密封件接收表面位于所述滚动锥形切割器上。 第二密封件接收表面具有第二角。 密封组件包括第一和第二密封单元。 第一密封单元包括第一环形基本刚性环和位于所述轴承销和所述滚动圆锥切割器之间的第一基本上弹性的环。 第一弹性环位于所述第一角。 第二密封单元包括位于所述轴承销和所述滚动锥形切割器之间的第二环形基本刚性环和第二基本上弹性的环。 第二弹性环位于所述第二拐角处。 所述第一和第二环形大致刚性环之间的滑动界面相对于所述支承销倾斜。 第一和第二基本上刚性的环由诸如特氟隆，尼龙，塑料，金属或其它基本上刚性的材料制成。

公开(公告)号：US4168868A

公开(公告)日：1979-09-25

申请号：US925131

申请日：1978-07-17

申请人： Santos Shields

发明人： Santos Shields

IPC分类号： E21B10/22 ,  E21B10/25 ,  F16J15/16 ,  F16C33/78 ,  F16J15/34

CPC分类号： E21B10/25 ,  F16J15/166 ,  Y10S277/91

摘要： A sealing system acts as a barrier to the drilling fluid, pulverized cuttings and other materials in the borehole preventing the materials from entering the bearing area of an earth boring cutter and retains lubricant inside the bearing area. At least one bearing pin extends from the body of an earth boring bit and a rolling cutter is mounted on the bearing pin. A seal assembly is located between the mouth of the cutter and the bearing pin. The seal assembly includes an "O" ring and a washer ring. The washer ring has a semi-circular or semi-elliptical cross section.

摘要翻译： 密封系统作为钻井液，粉碎的切屑和钻孔中的其他材料的屏障，防止材料进入钻孔刀具的轴承区域，并将润滑剂保留在轴承区域内。 至少一个轴承销从钻孔头的主体延伸，滚动切割器安装在轴承销上。 密封组件位于切割器口与轴承销之间。 密封组件包括“O”形环和垫圈。 垫圈环具有半圆形或半椭圆形横截面。