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1. 发明授权

US10883483B2 Seal assembly for reciprocating compressor 有权
公开(公告)号：US10883483B2
公开(公告)日：2021-01-05
申请号：US16145437
申请日：2018-09-28
申请人： Air Products and Chemicals, Inc.
发明人： David Jonathan Chalk
IPC分类号： F16J15/56 , F16J15/40 , F16J15/3284 , F04B39/04 , F16J15/38 , F04B39/12
摘要： A seal assembly for a reciprocating rod of a reciprocating compressor, a reciprocating compressor with the seal assembly, and a method of operating the reciprocating compressor with the seal assembly to prevent leakage of gas once the compressor has been shut down. The pressure difference between opposite sides of a static seal is kept low during normal operation to reduce wear of the static seal. When the compressor is shut down, a high pressure difference between opposite sides of the static seal assists with sealing.

2. 发明授权

US10557554B2 Mechanical seal with high pressure high temperature secondary seal 有权
公开(公告)号：US10557554B2
公开(公告)日：2020-02-11
申请号：US16008214
申请日：2018-06-14
申请人： Flowserve Management Company
发明人： Eric Hamilton , Daniel Nelson
IPC分类号： F16J15/38 , F16J15/36 , F16J15/34
摘要： A secondary seal of a mechanical seal comprises an annular sealing gasket and backing plate surrounding a cylindrical sealing surface, all of which can be made of the same metallic material. The gasket is C-shaped in cross section, and is axially pressed during operation into a C-shaped groove formed in the backing plate, the groove being shallower and larger in inner diameter than the gasket, so that the gasket, when pressed into the groove, deforms radially inward and seals against both the backing plate and the sealing surface. The contact area between the gasket and sealing surface increases with pressure. In embodiments, when the pressure is released, the gasket retracts from the sealing surface, allowing easy disassembly and allowing axial movement of the gasket and backing plate. Highly polished surfaces of the gasket and sealing surface can allow axial motion thereof during operation to maintain the seal face gap.

3. 发明授权

US10077640B2 Tie-back seal assembly 有权
公开(公告)号：US10077640B2
公开(公告)日：2018-09-18
申请号：US14909964
申请日：2014-09-10
申请人： Halliburton Energy Services, Inc.
发明人： Abdol Reza Gharesi , Raymond Yit Long Chua
IPC分类号： E21B43/10 , F16J15/38 , E21B33/129
CPC分类号： E21B43/10 , E21B33/1293 , F16J15/38
摘要： A tie-back seal system is disclosed. The system includes a tie-back seal assembly including an outer sleeve, an inner sleeve disposed within the outer sleeve, a shear pin extending through the outer and inner sleeves, and a ratch-latch pin coupled to and disposed downhole from the inner sleeve. The system also includes a tie-back liner disposed within the inner sleeve and coupled to the outer and inner sleeves using the shear pin such that the shear pin prevents axial movement of the tie-back liner relative to the outer and inner sleeves. The system further includes a tie-back receptacle configured to engage the ratch-latch pin to prevent axial movement of the inner sleeve and tie-back liner in an uphole direction and including a shoulder that, when in contact with the outer sleeve, prevents axial movement of the outer sleeve in a downhole direction.

4. 发明授权

US09841108B2 Mechanical seal 有权
公开(公告)号：US09841108B2
公开(公告)日：2017-12-12
申请号：US14124653
申请日：2012-04-27
申请人： Hiroshi Aoike , Takeshi Ikarashi
发明人： Hiroshi Aoike , Takeshi Ikarashi
IPC分类号： F16J15/34 , F16J15/38
CPC分类号： F16J15/38 , F16J15/344
摘要： An inside-type mechanical seal is mounted between a rotating shaft and a housing, and adapted for preventing leakage of a sealed fluid from an outer circumference of a sliding surface in the direction of an inner circumference thereof, wherein provided are a rotary-side sealing ring mounted on a rotating shaft side, a stationary-side sealing ring mounted on a seal case side, an annular packing for pushing the stationary-side sealing ring toward the rotary-side sealing ring, a holding part on the outer circumferential side being fitted in the seal case, and a seal lip part on the inner circumferential side being in close contact with the stationary-side sealing ring, and wherein provided to the seal case is a ring-shaped projection abutting against a back surface of the packing during assembly of the mechanical seal, and adapted for pushing the packing toward the stationary-side sealing ring.

5. 发明授权

US09644745B2 Mechanical seal 有权
公开(公告)号：US09644745B2
公开(公告)日：2017-05-09
申请号：US14910393
申请日：2014-10-08
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Nobuo Nakahara , Yasuhiro Ikeda
IPC分类号： F16J15/34 , F16J15/38
CPC分类号： F16J15/3448 , F16J15/3452 , F16J15/348 , F16J15/38
摘要： A mechanical seal (100) includes a sleeve (130) fixed to a rotating shaft (200), wherein the sleeve (130) has: a first annular portion (131) that has a step having an inner diameter and an outer diameter on a sealed fluid (F) side thereof that are larger than those of on an opposite side thereto, an inner peripheral surface of a small diameter portion (131a) on the first annular portion (131) is fitted on the rotating shaft (200), and a stationary ring (110) is disposed on the small diameter portion (131a), a rotating ring (120) is disposed between a large diameter portion (131b) and an inner peripheral surface of the rotating ring (120) is sealed, S2÷S1≦1 is satisfied where S1 is a sliding area between the stationary ring (110) and the rotating ring (120), S2 is a pressure receiving area where the stationary ring (110) receives a pressure effect of the rotating ring (120) due to a pressure of the sealed fluid (F).

6. 发明授权

US09488187B2 Seal assembly for centrifugal compressors 有权
标题翻译：离心压缩机密封组件
公开(公告)号：US09488187B2
公开(公告)日：2016-11-08
申请号：US14172490
申请日：2014-02-04
申请人： DRESSER-RAND COMPANY
发明人： Patrice Bardon , Raphael Bridon , Wee Sen Ng , William Runyan
IPC分类号： F16J15/38 , F04D29/12
CPC分类号： F04D29/12 , F04D29/124
摘要： A sealing system for process gas leakage from a turbomachine casing is provided. The sealing system may include a seal assembly housing coupled to or integral with the turbomachine casing. The seal assembly housing defines a bore configured to receive a rotary shaft and a sealing assembly. The sealing assembly includes a plurality of carbon rings mounted circumferentially about the rotary shaft. The plurality of carbon rings may include an inboard carbon ring configured to prevent flow of a separation gas inboard of the barrier seal, an outboard carbon ring configured to prevent flow of contaminates into the seal assembly housing, and an intermediate carbon ring interposed between the inboard carbon ring and outboard carbon ring. A pressure differential is maintained across the inboard carbon ring, such that the separation gas is prevented from flowing inboard across the inboard carbon ring by a residual portion of a seal gas.
摘要翻译：提供了一种用于从涡轮机壳体处理气体泄漏的密封系统。密封系统可以包括联接到涡轮机壳体或与涡轮机壳体一体的密封组件壳体。密封组件壳体限定了构造成容纳旋转轴和密封组件的孔。密封组件包括围绕旋转轴周向安装的多个碳环。多个碳环可以包括内部碳环，其被构造成防止隔离密封件内侧的分离气体的流动，外侧碳环被构造成防止污染物流入密封组件壳体中，以及插入在内侧之间的中间碳环碳环和外侧碳环。在内侧碳环上保持压力差，从而防止分离气体通过密封气体的残留部分在内侧流入内侧碳环。

7. 发明申请

US20150192208A1 Sealing Microsawtooth Ring Joint of Two Opposing Surfaces 审中-公开
标题翻译：密封两个相对表面的微锯齿环接头
公开(公告)号：US20150192208A1
公开(公告)日：2015-07-09
申请号：US14221789
申请日：2014-03-21
申请人： Changxiang XU
发明人： Changxiang XU
IPC分类号： F16K3/22 , F16J15/38
CPC分类号： F16K3/22 , F16J15/04 , F16J15/062 , F16J15/38 , F16K1/34 , F16K1/385 , F16K1/42 , F16K3/02 , F16K3/0227 , F16K5/0668 , F16K25/00 , F16L23/162 , F16L23/18
摘要： A sealing microsawtooth ring joint, made between a toothed seating surface and a full plain seated surface by a microsawtooth ring with its tooth crest on the seating surface being a cutting edge whose corner or whose crest angle is about 90°˜120°, with its tooth height Zt being about 10˜20 times the roughness Ra of the seated surface, and with the ratio of its tooth pitch Xs to its tooth height Zt being 20˜500 to ensure that the tight joint has a microcosmic line contact followed by a surface contact or to ensure that the tight joint has both such a line contact as to be able to provide a necessary seating stress locally and such a surface contact as to be able to protect the line contact from being excessively pressed to get blunt or disappeared, can be used either as a pressure-tight joint or as a self-energizing tight joint of any too surfaces such as flats to flats, cones to cones or spheres, spheres to spheres or cones etc., thus simplifying and unifying the designing, calculating, manufacturing, selecting, installing and maintaining of fussy gaskets for a tight joint of flat surfaces, avoiding the lapping of formed jointing surfaces without using soft gaskets, increasing the reliability of tight joints sod the utilizing coefficient of natural resources. The sealing microsawtooth ring joint can still have an extra sealing reliability and safety sensation by selectively adding one of four basic gland seals.
摘要翻译：一个密封的微锯齿环接头，由一个微型锯齿形环在一个齿形的座面和一个完整的平坦的座位表面之间，其座位表面上的齿顶是一个切削刃，其角部或其顶角约为90°〜120°，牙齿高度Zt为座位表面的粗糙度Ra的10〜20倍，其齿距Xs与牙齿高度Zt的比例为20〜500，以确保紧密接头具有微观线接触，然后是表面接触或确保紧密接头具有这样的线接触，以便能够局部地提供必要的就座应力，并且这种表面接触能够保护线接触不被过度压扁以消失或消失，可用作压力接头或任何太平表面的自增力紧密接头，例如扁平物，锥体，锥体或球体，球体到球体或球体等，从而简化和统一设计，计算用于平面紧密接合的笨重垫片的制造，选择，安装和维护，避免了在不使用软垫片的情况下研磨成形接合面，增加了紧密接头的可靠性，提高了自然资源的利用系数。通过选择性地添加四个基本密封圈中的一个，密封微锯齿环接头仍然可以具有额外的密封可靠性和安全感。

8. 发明申请

US20150069717A1 Split Seal for a Shaft 有权
标题翻译：轴的分离密封
公开(公告)号：US20150069717A1
公开(公告)日：2015-03-12
申请号：US14021121
申请日：2013-09-09
申请人： Dan Gabriel Teodosiu
发明人： Dan Gabriel Teodosiu
IPC分类号： F16J15/38
CPC分类号： F16J15/4474
摘要： A shaft seal includes first and second rings, each formed from first and second discrete arc segments, mounted on a shaft. The first ring includes a central opening and a flange projecting axially away from a first axial surface of the first ring around the central opening, and the flange has a radially outer surface. The second ring has a radial inner face defining a central opening that includes a first portion extending from a first axial face of the second ring and a second portion extending from a second axial face of the second ring, and the second ring is mounted to the first ring with the second portion in contact with the radially outer surface of the flange. A plurality of fasteners extend from the second ring into an axial surface of the first ring or from the first ring into an axial face of the second ring.
摘要翻译：轴密封件包括第一和第二环，每个由安装在轴上的第一和第二离散弧段形成。第一环包括中心开口和沿中心开口轴向远离第一环的第一轴向表面突出的凸缘，并且凸缘具有径向外表面。第二环具有限定中心开口的径向内表面，其包括从第二环的第一轴向面延伸的第一部分和从第二环的第二轴向面延伸的第二部分，并且第二环安装到第一环与第二部分接触凸缘的径向外表面。多个紧固件从第二环延伸到第一环的轴向表面或从第一环延伸到第二环的轴向表面。

9. 发明授权

US08511689B2 Shaft sealing apparatus 有权
标题翻译：轴封装置
公开(公告)号：US08511689B2
公开(公告)日：2013-08-20
申请号：US13260429
申请日：2010-02-24
申请人： Hidekazu Takahashi
发明人： Hidekazu Takahashi
IPC分类号： F16J15/34 , F16J15/38
CPC分类号： F16J15/3484 , F16J15/38
摘要： A shaft sealing apparatus of including a first mechanical seal having a mating ring disposed at the sealed fluid side and which rotates along with a shaft as the inner circumference side thereof is fixed to the shaft side, and a sealing ring disposed at the air side with respect to the mating ring and is slidable against the mating ring and which does not rotate along with the shaft. An annular space in which the sealed fluid exists is formed at the outer circumferential face side of the first mechanical seal. The shaft sealing apparatus further includes a protection cover disposed adjacent to the sealed fluid side of the seal cover in a state of being sealed with the seal cover and with the first mechanical seal respectively by an O-ring so as to suppress exposure of the seal cover to the sealed fluid.
摘要翻译：一种轴封装置，包括：第一机械密封件，其具有设置在所述密封流体侧的配合环，并且随着其内周侧固定在所述轴侧而与所述轴一起旋转;以及密封环，其设置在所述空气侧，相对于配合环，并且能够抵靠配合环滑动，并且不与轴一起旋转。在第一机械密封件的外周面侧形成有密封流体存在的环状空间。轴封装置还包括一个与密封盖的密封流体侧相邻设置的保护盖，该保护盖分别通过密封盖和第一机械密封被O形环密封，以便抑制密封件的暴露覆盖到密封流体。

10. 发明申请

US20120248705A1 MECHANICAL SEAL DEVICE 审中-公开
标题翻译：机械密封装置
公开(公告)号：US20120248705A1
公开(公告)日：2012-10-04
申请号：US13515318
申请日：2011-03-16
申请人： Yoshihiro Suefuji
发明人： Yoshihiro Suefuji
IPC分类号： F16J15/38
CPC分类号： F16J15/3488
摘要： The object of the present invention is to provide a divisional type mechanical seal of outside type which joins the seal face in flat and strongly even in a seal ring having a different thickness in the radial direction, and to exhibit an appropriate sealing ability. In the mechanical seal device of the present invention, the circumference grooves 31 to 34 and 71 to 74 are formed in correspondence with the thicker area 38 and 78 and the thinner area 39 and 79 at the outer peripheral face of the seal ring 30, 70; and the circumference grooves 51 to 54 and 91 to 94 are formed in correspondence with the circumference direction grooves 31 to 34 and 71 to 74 at the inner peripheral face of the holder 50 and 90. By placing the O rings 41 to 44 and 81 to 84 in between the circumference grooves 31 to 34 and 71 to 74 of the seal ring 30 and 70, and the circumference grooves 51 to 54 and 91 to 94 of the holder 50 and 90, the holder having a ring shape of which the divisional parts of each holder is joined by the bolts 55, 95 and 56 and 96 respectively corresponding to the thicker area 38, 78 and thinner area 39, 79; each divisional parts of the divided seal ring can be strongly joined and the each seal ring 30 and 70 are formed in ring shape.
摘要翻译：本发明的目的是提供一种外部类型的分隔型机械密封，其将密封面平坦地连接，并且强力地连接在径向具有不同厚度的密封环中，并且具有适当的密封能力。在本发明的机械密封装置中，圆周槽31〜34,71〜74与密封环30,70的外周面的较厚的区域38,78以及较薄的区域39,79形成对应。 ; 圆周槽51至54和91至94与保持件50和90的内周面上的圆周方向槽31至34和71至74相对应地形成。通过将O形环41至44和81置于 84处于密封环30和70的圆周槽31至34和71至74之间，以及保持件50和90的圆周槽51至54和91至94之间，该保持器具有环形，该分隔部分每个保持器通过分别对应于较厚区域38,78和更薄区域39,79的螺栓55,95和56和96连接; 分隔密封圈的各分割部分可以牢固地连接，并且每个密封环30和70形成为环形。

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