Modular bearing with replaceable pivot pads

Abstract

A hydrodynamic bearing for supporting a shaft includes a bearing housing and one or more pad modules. The bearing housing defines an inner surface and one or more axial grooves adjacent the inner surface. At least one of the one or more pad modules includes a pad body, a root portion configured to mate with one of the axial grooves of the bearing housing, and a web portion connecting the pad body and the root portion.

Description

Cross-reference to related applications

[0001] This application claims priority to U.S. Provisional Application No. 63 / 585,866, filed September 27, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] This invention relates to bearings, and more particularly to structural features for maintaining and cooling bearings and their components. Background Technology

[0003] Some bearings rely on fluid films for proper operation. The temperature of the fluid film, as well as the temperature of the bearing surface, can significantly affect bearing performance. Bearings typically withstand dynamic loads, which can impact stability and increase power loss.

[0004] Hydrodynamic radial bearings typically employ a structure where a pad is supported to pivot about an axis parallel to the axis of rotation of the supported shaft. This pivoting motion occurs during rotation as fluid pressure builds up at the bearing surfaces. This creates a fluid wedge between the bearing surfaces. Summary of the Invention

[0005] Some embodiments of this disclosure provide a hydrodynamic bearing for supporting a shaft, including a bearing housing and one or more pad modules. The bearing housing defines an inner surface and one or more axial grooves adjacent to the inner surface. At least one of the one or more pad modules includes a pad body, a root portion, and a web portion, wherein the root portion is configured to mate with one of the axial grooves of the bearing housing, and the web portion connects the pad body and the root portion.

[0006] In some embodiments, the web portion is defined as an I-shaped cross section.

[0007] In some embodiments, at least one of the one or more pad modules is connected to the bearing housing such that when the hydrodynamic bearing is mounted on the shaft, the pad body is configured to tilt about an axis parallel to the axis of the shaft.

[0008] In some embodiments, the bearing housing is configured to prevent the at least one pad module from separating radially inward relative to the bearing housing.

[0009] In some embodiments, at least one of the one or more axial grooves includes a neck configured to inhibit radially inward separation of the at least one pad module relative to the bearing housing.

[0010] In some embodiments, the pad body, the web portion, and the root portion are integrally formed with each other.

[0011] In some embodiments, the bearing housing includes an integral damper.

[0012] In some embodiments, the web portion of the at least one pad module is at least partially located in a corresponding axial groove and below the inner surface of the bearing housing.

[0013] In some embodiments, at least one of the axial grooves is dovetail-shaped.

[0014] In some embodiments, the root of at least one pad module is formed with two or more serrated structures, which are configured to inhibit the at least one pad module from separating radially inward relative to the bearing housing.

[0015] In some embodiments, the root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

[0016] In some embodiments, the hydrodynamic bearing includes a fastener configured to connect the at least one pad module to the bearing housing.

[0017] In some embodiments, the fastener is configured to inhibit axial movement along the axial groove.

[0018] In some embodiments, the fastener is inclined relative to the pad module.

[0019] In some embodiments, the fastener is arranged radially.

[0020] In some embodiments, the fastener is configured to inhibit axial movement of the at least one pad module relative to the bearing housing.

[0021] In some embodiments, a gasket is also included, which is disposed between the root of the at least one gasket module and the bearing housing.

[0022] In some embodiments, one or more lubrication devices are also included, which are configured to supply lubricant to at least one of the one or more pad modules.

[0023] In some embodiments, one or more directional lubrication devices are also included, which are configured to supply lubricant to at least one of the one or more pad modules.

[0024] In some embodiments, at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0025] A further embodiment of this disclosure provides a pad module for a hydrodynamic bearing, comprising a pad body, a root portion, and a web portion, wherein the root portion is configured to mate with an axial groove of the bearing housing, and the web portion has an I-shaped cross section and connects the pad body and the root portion.

[0026] A further embodiment of this disclosure provides a hydrodynamic bearing for supporting a shaft, including a bearing housing and one or more pad modules. The bearing housing defines a first surface and one or more receiving portions adjacent to the first surface. At least one of the one or more pad modules includes a pad body, a root portion, and an I-shaped web portion, wherein the root portion is configured to mate with at least one of the receiving portions of the bearing housing, and the web portion connects the pad body and the root portion.

[0027] In some embodiments, the receiving portion is configured to prevent the at least one pad module from separating from the bearing housing.

[0028] In some embodiments, the first surface is an inner surface. The receiving portion is configured to prevent the at least one pad module from separating radially inward relative to the bearing housing.

[0029] In some embodiments, the hydrodynamic bearing is a tiltable pad radial bearing.

[0030] In some embodiments, the hydrodynamic bearing is a tiltable pad thrust bearing.

[0031] In some embodiments, the hydrodynamic bearing further includes one or more directional lubrication devices.

[0032] In some embodiments, the hydrodynamic bearing further includes one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0033] A further embodiment of this disclosure provides a hydrodynamic bearing, including a bearing housing module and one or more spacers. The bearing housing module includes: a housing body; one or more spacer mounting portions; and one or more I-shaped web portions, wherein at least one of the one or more I-shaped web portions connects one of the spacer mounting portions to the housing body. The one or more spacers are respectively connected to at least one of the one or more spacer mounting portions.

[0034] Embodiments of this disclosure also provide a method for maintaining a hydrodynamic bearing, comprising: disassembling a pad module from a mating state in a receiving portion of a bearing housing; and installing the root of a replacement pad module into the receiving portion of the bearing housing such that the pad body of the replacement pad module is supported by the web portion of the pad module, and such that the pad body is configured to tilt relative to the root of the replacement pad module.

[0035] In some embodiments, the mating of the root of the replacement pad module with the receiving portion inhibits its radially inward separation relative to the bearing housing.

[0036] In some embodiments, the receiving portion includes an axial groove, and installing the replacement pad module includes sliding the replacement pad module along at least a portion of the receiving portion, thereby engaging the root portion with the axial groove.

[0037] In some embodiments, the method further includes installing a fastener to secure the root of the replacement pad module to the bearing housing.

[0038] In some embodiments, the method further includes providing a shim between the root of the replacement shim module and the bearing housing.

[0039] Embodiments of this disclosure also provide a method for manufacturing a hydrodynamic bearing, comprising: positioning a pad in a bearing housing; and fixing the pad to the bearing housing such that a web portion connecting the pad to the bearing housing is at least partially located within a receiving portion in the bearing housing.

[0040] In some embodiments, the receiving portion is an axial groove.

[0041] In some embodiments, the web portion is integrally formed with the pad block.

[0042] In some embodiments, the web portion is integrally formed with the bearing housing.

[0043] In some embodiments, a fastener is also included to secure the base of the pad to the bearing housing.

[0044] In some embodiments, a gasket is also provided between the gasket and the bearing housing.

[0045] A further embodiment of this disclosure provides a hydrodynamic bearing for supporting a shaft, including a bearing housing, one or more pad modules, and one or more fasteners. The bearing housing defines one or more inner surfaces. At least one of the one or more pad modules includes a pad body, a root portion, and a pivot portion, wherein the root portion includes one or more axially projecting portions, and the pivot portion connects the root portion to the pad body. The one or more fasteners are configured to connect at least one of the axially projecting portions of the root portion to at least one of the inner surfaces of the bearing housing.

[0046] In some embodiments, the pivot is configured to allow the pad body to tilt relative to the axis of the bearing housing.

[0047] In some embodiments, at least one of the one or more pad modules is connected to the bearing housing such that when the hydrodynamic bearing is mounted on the shaft, the pad body is configured to tilt about an axis parallel to the axis of the shaft.

[0048] In some embodiments, the root portion includes one or more pairs of opposing axially arranged protrusions.

[0049] In some embodiments, the root portion includes a base portion configured to accommodate the pivot portion.

[0050] In some embodiments, the pivot portion includes a rod-shaped member.

[0051] In some embodiments, the pivot portion includes a web portion.

[0052] In some embodiments, the pivot portion is integrally formed with the pad body.

[0053] In some embodiments, at least one of the one or more fasteners is mounted on the radial surface of the bearing housing.

[0054] In some embodiments, at least one of the one or more fasteners is mounted on the axial surface of the bearing housing.

[0055] In some embodiments, the bearing housing includes an integral damper.

[0056] In some embodiments, the root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

[0057] In some embodiments, the hydrodynamic bearing further includes a fastener configured to connect the at least one pad module to the bearing housing.

[0058] In some embodiments, the hydrodynamic bearing further includes a gasket disposed between the root of the at least one gasket module and the bearing housing.

[0059] In some embodiments, the hydrodynamic bearing further includes one or more lubrication devices configured to supply lubricant to the at least one pad module.

[0060] In some embodiments, the hydrodynamic bearing further includes one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

[0061] In some embodiments, at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0062] In some embodiments, the hydrodynamic bearing further includes one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0063] A further embodiment of this disclosure provides a hydrodynamic bearing for supporting a shaft, including a bearing housing and one or more pad modules. The bearing housing defines one or more inner surfaces. At least one of the one or more pad modules includes a pad body, a pivot portion integrally formed with the pad body, and a root portion. The pivot portion is configured to allow the at least one pad body to tilt relative to the axis of the bearing housing.

[0064] In some embodiments, the root portion includes one or more pairs of opposing axially arranged protrusions.

[0065] In some embodiments, the hydrodynamic bearing further includes one or more fasteners configured to connect the root to the bearing housing.

[0066] In some embodiments, the root portion includes a base portion configured to accommodate the pivot portion.

[0067] In some embodiments, the pivot portion includes a rod-shaped member.

[0068] In some embodiments, the pivot portion includes a web portion.

[0069] In some embodiments, at least one of the one or more fasteners is mounted on the radial surface of the bearing housing.

[0070] In some embodiments, at least one of the one or more fasteners is mounted on the axial surface of the bearing housing.

[0071] In some embodiments, the bearing housing includes an integral damper.

[0072] In some embodiments, the root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

[0073] In some embodiments, the hydrodynamic bearing further includes a fastener configured to connect the at least one pad module to the bearing housing.

[0074] In some embodiments, the hydrodynamic bearing further includes a gasket disposed between the root of the at least one gasket module and the bearing housing.

[0075] In some embodiments, the hydrodynamic bearing further includes one or more lubrication devices configured to supply lubricant to the at least one pad module.

[0076] In some embodiments, the hydrodynamic bearing further includes one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

[0077] In some embodiments, at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0078] In some embodiments, one or more lubrication devices are also included, which are configured to supply lubricant to the trailing edge of the at least one pad module.

[0079] A further embodiment of this disclosure provides a hydrodynamic bearing for supporting a shaft, including a bearing housing and one or more pad modules. The bearing housing defines one or more inner surfaces. At least one of the pad modules includes a pad and a pad support. The pad support is configured to allow the pad to tilt relative to the axis of the bearing housing. The pad support includes a base and a pivot element disposed between the pad and the base.

[0080] In some embodiments, the hydrodynamic bearing further includes one or more fasteners configured to connect the base to the bearing housing.

[0081] In some embodiments, the base includes a pivot element connection and one or more axially extending projections from the pivot element connection. At least one of the one or more fasteners is configured to connect at least one of the axial projections of the at least one pad module to the bearing housing.

[0082] In some embodiments, the base includes axial projections extending from the pivot element connection in opposing axial directions. The one or more fasteners include at least one fastener configured to connect each of the opposing axial projections to the base.

[0083] In some embodiments, the hydrodynamic bearing further includes a gasket disposed between the base and the bearing housing.

[0084] In some embodiments, the hydrodynamic bearing further includes a gasket disposed between the gasket and the pivot element.

[0085] In some embodiments, the bearing housing includes an integral damper.

[0086] In some embodiments, the hydrodynamic bearing further includes one or more lubrication devices configured to supply lubricant to the at least one pad module.

[0087] In some embodiments, the hydrodynamic bearing further includes one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

[0088] In some embodiments, at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0089] In some embodiments, the hydrodynamic bearing further includes one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0090] The specific implementation of the subject matter described in this specification can achieve one or more of the following advantages.

[0091] The embodiments disclosed herein can make bearing systems easier to maintain and less expensive.

[0092] The embodiments of this disclosure can improve the maintainability of large bearings. For example, embodiments of this disclosure allow certain components of the bearing to be replaced without replacing other components of the bearing.

[0093] The embodiments disclosed herein can make large bearings easier to manufacture.

[0094] The embodiments of this disclosure allow different parts of the bearing to be made of different materials.

[0095] The embodiments disclosed herein can improve rotor dynamic performance.

[0096] The embodiments disclosed herein can reduce wear and contact stress at the pivot joint, thereby avoiding degradation of dynamic performance.

[0097] The embodiments disclosed herein can reduce pad temperature, power loss, and pad vibration.

[0098] Details of one or more embodiments of this disclosure are set forth in the accompanying drawings and description. Other features, aspects, and advantages of this disclosure will become apparent from the description, drawings, and claims. Attached Figure Description

[0099] Figure 1 This is a cross-sectional view of a system that includes a hydrodynamic bearing with a removable pad module according to some embodiments.

[0100] Figure 2 An example method for adjusting the gap between bearing pad modules is shown.

[0101] Figure 3 This is a cross-sectional view of a modular hydrodynamic bearing, wherein the pad module includes an integrally formed web portion connected by a fastener laterally connected to the root of the pad module.

[0102] Figure 4 This is a cross-sectional view of a hydrodynamic bearing, showing a pad module with an integral support element and an outwardly flared root.

[0103] Figure 4A This is a partial cross-sectional detail of a hydrodynamic bearing, showing the gasket positioned between the pad and the pivot element.

[0104] Figure 5 This is a cross-sectional view of a hydrodynamic bearing, showing a pad module with an integral support element and a serrated root, which is mounted in a housing with an integral squeeze film damper.

[0105] Figure 6 This is a cross-sectional view of a hydrodynamic bearing, showing a pad module with an integral support element, which is connected to the housing via an internal fastener.

[0106] Figure 7A and Figure 7B A system according to some embodiments is shown, wherein the bearing housing has an integrally formed web portion, each web portion receiving a removable pad module.

[0107] Figure 8 This is an end view of a bearing, where the pad is secured by fasteners.

[0108] Figure 9 A bearing is shown in which the pad includes a protrusion extending axially from the pivot.

[0109] Figure 10A bearing is shown in which a pad has an axial length such that the pad can tilt relative to the axis of the bearing housing.

[0110] Figure 11 A bearing is shown in which a pad module includes a pad, a pivot, and a base, which are provided as separate components.

[0111] Figure 12 A bearing module is shown, wherein the pivot joint is secured by an axial fastener.

[0112] Figure 13 This is a schematic diagram of a bearing, which includes a directional lubrication device.

[0113] Figure 14A This is a partial front view showing the directional lubrication device integrally formed with the bearing housing.

[0114] Figure 14B for Figure 14A The side view of the directional lubrication device shown is viewed laterally relative to the axis of rotation of the shaft.

[0115] Figure 15A This is a front view of an oil injection pipe that directs lubricant to the edge of a web-connected bearing.

[0116] Figure 15B for Figure 15A The side view of the fuel injection pipe shown is viewed laterally relative to the axis of rotation of the shaft.

[0117] Figure 16A This is a front view of a pad limiter that directs lubricant to the edge of a web-connected bearing.

[0118] Figure 16B for Figure 16A The side view of the pad block limiting component shown is viewed laterally relative to the axis of rotation of the shaft.

[0119] Figure 16C for Figure 16A The top view of the pad block limiting component shown.

[0120] Figure 17 This is a frontal schematic diagram of a lubrication device that directs fluid to the edge of an adjacent web plate connecting pad.

[0121] Figure 18 This is a schematic diagram of a thrust bearing (according to some embodiments). Detailed Implementation

[0122] In various embodiments, the hydrodynamic radial bearing includes a modular bearing pad support system capable of flexible movement about an axis parallel to the rotational axis of the supported shaft. This modular bearing system may include a two-piece bearing structure, wherein the pivot joint is integrally formed with the pad, or the pivot joint is integrally formed with the bearing housing.

[0123] The applications of the bearings described in this article include, but are not limited to, high-speed hydrogen production equipment and wind turbines. [An exemplary embodiment of a modular bearing, wherein the bearing has replaceable pads and an integrated pad support structure.] In some embodiments, the bearing is composed of an assembly of two basic components. The first component is a bearing pad with an integral "I-beam" support element. The second component is a base. In other embodiments, the first component is a bearing pad, and the second component is a base with two or more integral "I-beam" support elements. In various embodiments, the base may be in the form of a bearing housing. The housing may include one or more segments. For example, the bearing housing may include two halves that are combined to form a ring structure.

[0124] To describe the relationship between the components, the terms "inner" and "outer" refer to the radial direction, with the innermost point located on the axis of rotation of the shaft and the outermost point located outside the bearing housing.

[0125] Figure 1 This is a cross-sectional view of a system including a hydrodynamic bearing with a removable pad module according to some embodiments. System 100 includes a bearing 102 and a shaft 104. The bearing 102 supports the shaft 104 during system operation.

[0126] Bearing 102 includes pad modules 106 and bearing housing 108. Fasteners 110 connect each pad module 106 to the bearing housing 108. Thus, in this example, the outer portion of the I-beam support element is secured to the bearing housing by fasteners. Fasteners 110 allow the pads to be removed from the bearing housing for maintenance. In some embodiments, fasteners 110 are high-strength machine screws.

[0127] Each pad module 106 includes a pad body portion 112, a root portion 114, and a web portion 116. A pad liner 118 is disposed on the inner surface of the pad body portion 112. The web portion 116 connects the pad body portion 112 and the root portion 114. The pad body portion 112, the web portion 116, and the root portion 114 can be integrally formed with each other. The above structures together constitute an I-shaped support element.

[0128] In some embodiments, the pad module 106 is formed by electrical discharge machining (EDM). However, the pad module 106 can also be formed by other manufacturing techniques. For example, in one embodiment, the pad module 106 is formed by numerical control milling (CNC).

[0129] The bearing housing 108 includes a housing body 120. The housing body 120 includes an inner radial surface 122. Axial grooves 124 in the bearing housing 108 are adjacent to the inner radial surface 122 at the locations of each pad module 106. Each axial groove 124 may extend along the entire length of the bearing housing 108.

[0130] At each axial groove 124, a fastener hole 126 extends from the outer surface of the bearing housing 108 to the corresponding axial groove 124.

[0131] Each axial groove 124 includes a neck 128 and an enlargement 130. The enlargement 130 is located at the distal end of the axial groove 124 relative to the inner surface of the bearing housing 108. The neck 128 is located between the enlargement 130 and the inner radial surface 122 of the bearing housing 108.

[0132] exist Figure 1 In the illustrated embodiment, when the pad module 106 is installed in the bearing housing 108, the root 114 of the pad module 106 is located within the enlarged portion 130 of the axial groove 124. At least a portion of the web portion 116 is located within the neck 128 of the axial groove 124. The engagement of the root 114 with the axial groove 124 can prevent the pad module 106 from separating radially inward relative to the bearing housing 108. This engagement can also maintain the position of the pad module 106 before the bearing 102 is installed to the shaft 104 (e.g., during the handling of the bearing 102 and the assembly of the system 100).

[0133] The I-shaped support element, including the web portion 116, is configured to achieve limited flexible deformation around a linear axis parallel to the axis of rotation of the shaft. This flexibility allows the bearing to operate as a hydrodynamic bearing, i.e., the pad tilts relative to the shaft at its leading edge. This structure can form a lubricating fluid wedge on the bearing surface, which converges from the leading edge to the trailing edge under the action of force.

[0134] In some embodiments, one or more elements are disposed between the bearing housing and the shim. These elements can be selected to control various aspects of bearing performance. For example, to control preload and clearance, a flat shim (e.g., ...) can be disposed between the outer portion of the I-beam support element and the bearing housing. Figure 1 (Ships 134 in the middle). In some embodiments, the pads, pivots, and / or housings may be made of different materials. If the vibration level of the rotating machinery is unacceptable during commissioning, the clearance can be adjusted on-site to change the dynamic characteristics of the bearing. Figure 2 One method for determining the preload is shown by the following relationship: preload = 1 – Cb / Cp.

[0135] Figure 3 This is a cross-sectional view of a modular hydrodynamic bearing, wherein the pad module includes an integrally formed web portion connected to the bearing housing by a fastener. The fastener is laterally connected to the root of the pad module. System 300 includes a bearing 302 and a shaft 104. Bearing 302 includes a pad module 306 and a bearing housing 308. Bearing housing 308 includes a fastener opening 310. A fastener 110 passes through the fastener opening 310 and is secured to the root 312 of the pad module 306.

[0136] In some implementations, the bearing pad module is secured by mating with a receptacle in the bearing housing, without the need for separate fasteners. Figure 4 This is a cross-sectional view of a hydrodynamic bearing, showing a pad module with an integral support element and an outwardly flared root. In some embodiments, the axial groove 124 is a dovetail groove.

[0137] System 400 includes a pad module 406 mounted in a bearing housing 408. The bearing housing 408 includes a directional lubrication device 410. The root 114 of the pad module 406 engages with an axial groove 124. The neck 128 of the axial groove 124 prevents the pad module 406 from separating from the bearing housing 408.

[0138] In some implementations, a shim or mechanical spacer is provided between the pad and the support element. Figure 4A A gasket 420 is shown disposed between the pad 422 and the pivot element 424.

[0139] Figure 5 This is a cross-sectional view of a hydrodynamic bearing, showing a pad module with an integral support element and a serrated root. The pad module is mounted in a housing with an integral squeeze film damper.

[0140] System 500 includes bearing 502 and shaft 104. Bearing 502 includes pad module 506 and bearing housing 508. Pad module 506 includes pad body 510, root 512, web portion 514, and liner 518. Root 512 includes a serrated structure. Bearing housing 508 includes inner housing 520, outer housing 522, axial groove 524, and integrated squeeze film damper 526. Axial groove 524 includes serrations complementary to the serrated structure of root 512.

[0141] An integrated squeeze film damper 526 is integrated into the bearing housing 508. Its characteristics can be selected to control or adjust the dynamic characteristics of the bearing. The integrated squeeze film damper 526 includes a damping arc segment 528 and an "S"-shaped spring 530, providing damping and stiffness respectively when the bearing operates in a hydrodynamic manner. In this example, the pad can be a dovetail structure or other geometry (e.g., Figure 6 The turbine blade root structure shown is constrained to the bearing housing. This structure avoids drilling through the damping arc on the back of the pad.

[0142] In various embodiments, the hydrodynamic bearing can be oil-filled (i.e., operating in an oil bath) or directly lubricated by a jetting device or an oil nozzle disposed in the bearing housing. For example, Figure 4 The jetting device 410 is shown as a directional lubrication device; Figure 5 An oil nozzle 532 disposed in the bearing housing 506 is shown. Direct lubrication can reduce bearing power loss, increase load capacity, and reduce pad temperature.

[0143] In some implementations, the oil supply assembly or structure may be designed to spray fresh lubricating oil directly onto the trailing edge of the preceding pad (viewed in the opposite direction of rotation) to cool the pad body and reduce thermal deformation of the radial pad.

[0144] Figure 6 This is a cross-sectional view of a hydrodynamic bearing, showing a pad module with an integral support element connected to a housing via internal fasteners. System 600 includes a bearing 602 and a shaft 104. Bearing 602 includes a pad module 606 and a bearing housing 608. Pad module 606 includes a pad body 612, a root 614, a web portion 616, and a liner 618. Bearing housing 608 includes a housing body 620 and an axial groove 622. Fasteners 624 secure the pad module 606 to the bearing housing 608.

[0145] In the various embodiments described above, the pad module includes an integrally formed web portion, allowing the pad body to pivotally move relative to the root of the pad module (and thus relative to the bearing housing). In other embodiments, the pad body may be a component separate from the web portion. In some embodiments, the web portion may be integrally formed with the bearing housing.

[0146] Figure 7A and Figure 7B A system according to some embodiments is shown, wherein the bearing housing has an integrally formed web portion, each web portion being mated with a removable pad module. Figure 7A This shows the pad module separated from the support element. Figure 7BThe diagram shows the pad module mounted on a support element. The bearing 700 includes a pad module 702 and a bearing housing 704. The pad module 702 includes a pad body 706, a groove 708, and a liner 710. The bearing housing 704 includes a housing body 716 and a support element 718. The support element 718 includes a pad mounting portion 722 and a web portion 724. The support element 718 enables the pad body 706 to pivot about an axis parallel to the axis of the shaft supported by the bearing 700. In one embodiment, the bearing housing 704 includes four support elements 718 evenly distributed circumferentially, but any number of support elements may be provided.

[0147] In the embodiment shown in FIG7, the web portion 724 is located within the gap 720. In other embodiments, the pad support element integrally formed with the bearing housing can extend radially inward from the inner surface of the housing.

[0148] In some implementations, bearings are maintained by replacing one or more pad modules. For example, such as... Figure 1 As shown, any one of the pad modules 106 (including its integral web portion 116) can be removed and replaced without disassembling the other pad modules. In embodiments with a support element integrally formed with the bearing housing, any pad can be removed and replaced from the bearing housing without removing other pads or support elements, and without replacing the bearing housing. For example, as shown in FIG7, any one of the pad modules 702 can be removed and replaced from its support element 718.

[0149] In some of the above embodiments, the pad module is mounted in an axial groove extending along the length of the bearing housing. In other embodiments, the pad module may be mounted in other forms of receiving portion within the bearing housing. For example, the pad module may include an integral support element that mates with a hole or recess disposed on the inner surface of the housing along the length of the bearing housing. Therefore, in some embodiments, the receiving portion for receiving the integral support element of the pad module does not necessarily extend along the entire axial length of the bearing.

[0150] In some embodiments, the modular pads are secured to the bearing housing by fasteners located at the base of the pivot joint and securing them to the bearing housing. To accommodate screws, the length of the pivot joint used to tilt the pads can be reduced. A shim can be placed between the base of the pivot joint and the bearing housing to adjust bearing clearance and preload.

[0151] Figure 8 , Figure 9 , Figure 10 and Figure 11 A hydrodynamic bearing is shown, according to some embodiments, in which a pad is secured to a housing by fasteners.

[0152] Figure 8 This is an end view of a bearing, wherein a spacer is secured by fasteners. The bearing 800 includes a housing 802, a spacer module 804, and fasteners 806. The housing 802 includes an integral damper 810. The spacer module 804 is secured to the housing 802 by fasteners 806.

[0153] Figure 9 , Figure 10 and Figure 11 An embodiment of the pad block module including the pivot joint is shown. Figure 9 , Figure 10 and Figure 11 The embodiments shown can all be applied to similar... Figure 8 The bearing shown is 800.

[0154] Figure 9 A bearing is shown in which a pad includes a protrusion extending axially from a pivot portion. The bearing 900 includes a housing 902, a pad module 904, and a fastener 906. The pad module 904 includes a pad body 910, a pivot portion 912, and a root portion 914. The root portion 914 includes an axially projecting portion 916. The axially projecting portion 916 extends axially from the base of the pivot portion 912. The pad module 904 is secured to the housing 902 by the fastener 906. In various embodiments, the axially projecting portion 916 may be an edge, a tab, a flange, a leg, or a combination thereof.

[0155] Figure 10 A bearing is shown in which a spacer has an axial length such that the spacer can tilt relative to the axis of the bearing housing. The bearing 1000 includes a housing 1002, a spacer module 1004, and a fastener 1006. The spacer module 1004 includes a spacer body 1010, a pivot portion 1012, and a root portion 1014. The root portion 1014 includes an axially projecting portion 1016 that extends axially from the base of the pivot portion 1012.

[0156] like Figure 10 As shown, by further reducing the axial length of the pivot joint, the pad can achieve axial self-adjusting tilt to accommodate shaft misalignment. This embodiment allows the bearing to be axially aligned with the shaft. The axial rotational stiffness generated by the pivot joint geometry can be the same as or different from the circumferential rotational stiffness responsible for the normal tilting of the pad.

[0157] In some embodiments, the pad module includes three components: a pad, a pivot, and a base of the pivot. The base of the pivot is connected to the bearing housing. The pivot can be detached from the pad and separate from the base. For example, the pad and the base may each include a groove or recess for receiving a corresponding end of the pivot.

[0158] Figure 11 A bearing is shown in which a pad module includes a pad, a pivot, and a base, provided as separate components. The bearing 1100 includes a housing 1102, a pad module 1104, and a fastener 1106. The pad module 1104 includes a pad body 1110, a pivot 1112, and a root 1114. The root 1114 includes an axially projecting portion 1116.

[0159] In this example, the root portion 1114 serves as the base of the pivot portion 1112. The root portion 1114 constitutes the support structure of the pad body 1110. Both the pad body 1110 and the root portion 1114 include a groove or recess for receiving the opposite end of the pivot portion 1112. After the pad module 1104 is assembled and fixed to the housing 1102, the pad body 1110 is capable of pivoting relative to the bearing housing in the axial direction.

[0160] exist Figures 9 to 11 In the illustrated embodiment, the pad module includes an axial protrusion extending from the pivot in an opposing axial direction. In other embodiments, the bearing may include an axial protrusion extending in only one axial direction.

[0161] In some embodiments, the pivot is in the form of a rod. In one embodiment, the rod-shaped pivot is a separate component that is connected to the housing and the pad at both ends, respectively.

[0162] The cross-section of the pivot joint can be elliptical, circular, rectangular, or other shapes. In some embodiments, the cross-sectional shape can be selected to achieve specific axial and circumferential rotational stiffness.

[0163] exist Figures 9 to 11 In the illustrated embodiment, the spacer is secured by fasteners mounted on the radial surface of the bearing housing. In other embodiments, the bearing may include a spacer module secured by fasteners mounted axially.

[0164] Figure 12 A bearing module is shown, wherein a pivot joint is secured by an axial fastener. The bearing 1200 includes a housing 1202, a pad module 1204, and a fastener 1206. The pad module 1204 includes a pad body 1210, a pivot joint 1212, and a root portion 1214. The root portion 1214 includes an axially projecting portion 1216 extending axially from the base of the pivot joint 1212. The pad module 1204 is secured to the housing 1202 by the fastener 1206, which is axially mounted. End plates 1218 may be provided on both sides of the bearing housing 1202.

[0165] [Exemplary Implementation with Directional Lubrication Device] Figure 13 This is a front view of a bearing for a rotating shaft, including a directional lubrication device. Bearing 1300 supports a rotating shaft 1302. In this example, bearing 1300 is a tiltable pad radial bearing. Bearing 1300 includes a bearing housing 1304, pad modules 1306, and a lubrication device 1308. Each pad module 1306 is connected to the bearing housing 1304 via a web 1310. Figure 13 In the example shown, the web 1310 and the pad module 1306 are integrally formed. In some embodiments, the bearing housing 1304, the pad module 1306, the lubrication device 1308, and the web 1310 are manufactured by electrical discharge machining. When the shaft 102 rotates, each pad module 106 pivots relative to the bearing housing 1304 at the web 1310.

[0166] Each pad module 1306 includes a leading edge 1312 and a trailing edge 1314. Figure 13 In the example shown, the lubrication device 1308 guides the fluid to the trailing edge 1314 of the pad module 1306.

[0167] Figure 14A This is a partial front view of a directional lubrication device integrally formed with the bearing housing. Figure 14B for Figure 14A The side view of the directional lubrication device is shown, with the viewing direction transverse relative to the axis of rotation of the shaft. The bearing housing 1304 includes a ridge 1316. The ridge 1316 protrudes outward from the body 1318 of the bearing housing 1304. A housing end plate 1320 is connected to the body 1318. The ridge 1316 extends from one end of the body 1318 to the other.

[0168] Ridge 1316 includes a channel 1322. Channel 1322 is in fluid communication with fluid inlet 1324. Channel 1322 includes an opening 1326. Ridge 1316 includes a base 1328 and a crown 1330. In this example, channel 1322 may be a blind hole extending from opening 1326 and through a large portion of the length of body 1318.

[0169] The ridge 1316 includes a series of inclined holes 1332. The inclined holes 1332 can be drilled into the ridge 1316. The inclined holes 1332 are in fluid communication with a channel 1322. The channel 1322 can serve as a manifold for distributing lubricating fluid to the inclined holes 1332. Lubricating fluid can enter through a fluid inlet 1324, flow through the channel 1322, and exit through the inclined holes 1332. The inclined holes 1332 can direct fluid to the edges of one or more pad modules 1306 (in...). Figure 3 In the example shown in A, the trailing edge 1314 of the guide pad module 1306.

[0170] exist Figure 14AIn this context, angle A represents the angle between the inclined hole 1332 and the radial direction 1333 of the bearing 1300. In some embodiments, angle A is between approximately 40 degrees and 70 degrees. In one embodiment, angle A is 50 ± 5 degrees. In some embodiments, angle A varies in the width direction of the bearing. For example, near the edge of the bearing housing 1304, the angle may be greater or less than the angle at the center of the bearing housing 1304. In some embodiments, the holes are evenly spaced in the width direction of the bearing. In other embodiments, the spacing between the holes varies in the width direction of the bearing 1300.

[0171] The lubrication device 1308 can direct fluid to the edge of the pad module 1306. In some embodiments, the lubrication device 1308 directs fluid to the tail or front of the pad module 1306. Each lubrication device includes an orifice (e.g., an inclined orifice 1332) that can discharge fluid from a fluid inlet outward with specific fluid flow characteristics (e.g., velocity, flow rate). In some embodiments, a lubrication device includes one set of orifices for removing existing fluid from the pad and another set of orifices for supplying fresh fluid to the pad.

[0172] Examples of bearing materials that can be used in the bearings described herein include steel, aluminum-tin, copper, copper-chromium, bronze, Babbitt metal, aluminum-tin, ceramics, polymers, polycrystalline diamond (PCD), and tungsten carbide. In some cases, the bearing is provided with a Babbitt metal liner.

[0173] In one embodiment, the gap between the working surface of each pad and the shaft 702 is approximately 0.05 mm. In one example, the pad has a radial thickness of approximately 200 mm and an axial dimension of approximately 520 mm.

[0174] exist Figure 13 , Figure 14A and Figure 14B In the example shown, the lubrication device for guiding the fluid is integrally formed with the bearing housing. In other embodiments, the bearing lubrication device includes components separate from the bearing housing for guiding fluid to one or more edges of a pad connecting the web of the bearing. Figure 15A This is a front view of an oil injection pipe that will lubricate the edge of a web-connected bearing. Figure 15B for Figure 15A The side view of the fuel injection pipe shown is transverse relative to the axis of rotation of the shaft. The fuel injection pipe 1340 is located at the distal end of the base 1342. A channel 1344 provided in the base 1342 and the fuel injection pipe 1340 delivers fluid from the fluid inlet 1346 to the orifice 1348 in the fuel injection pipe 1340 and the base 1342. The fluid is guided to the trailing edge 1314 of the pad module 1306. The housing end plate 1350 is connected to the housing body 1352 by fasteners 1354.

[0175] Figure 16A This is a front view of a pad limiter that lubricates the edge of a web-connected bearing. Figure 16B for Figure 16A The side view of the pad retainer shown is lateral to the axis of rotation of the shaft. The pad retainer 1360 is located at the distal end of the base 1362. A channel 1364 provided in the base 1362 and the pad retainer 1360 delivers fluid from the fluid inlet 1366 to the orifice 1368 in the pad retainer 1360. The fluid is guided to the trailing edge 1314 of the pad 1306. The housing end plate 1370 is connected to the housing body 1372 by fasteners 1374.

[0176] See Figure 16C The orifices 1368 in the pad block limiting member 1360 can be arranged radially relative to the centerline of the pad block limiting member 1360. In some embodiments, the orifices 1368 are equally spaced from each other in the angular direction. However, in various embodiments, the spacing of the orifices 1368 along the circumferential direction of the pad block limiting member can be different.

[0177] In some implementations, the lubrication device directs fluid to multiple pads of the bearing. Figure 17 This is a frontal schematic diagram showing a lubrication device that directs fluid to the edges of adjacent web-connecting pads. Bearing 1380 includes a bearing housing 1382, pads 1384, and a lubrication device 1386. Each pad 1384 is connected to the bearing housing 1384 via a web 1386. Each pad 1384 includes a trailing edge 1378 and a leading edge 1370.

[0178] The lubrication device 1386 includes a ridge 1392. The ridge 1392 includes a channel 1394. The channel 1394 is in fluid communication with a fluid inlet 1396. The ridge 1396 includes a series of inclined holes 1398 and 1399. The inclined holes 1398 and 1399 can be drilled into the ridge 1396. The inclined holes 1398 and 1399 are in fluid communication with the channel 1394. The channel 1394 can serve as a manifold for distributing lubricating fluid to the inclined holes 1398 and 1399. Lubricating fluid can enter through the fluid inlet 1396, flow out through the channel 1394, and exit through the inclined holes 1398 and 1399. The inclined hole 1398 can guide the fluid to a trailing edge 1378. The inclined hole 1399 can guide the fluid to a leading edge 790.

[0179] The number, arrangement, angle, spacing, and size of the inclined holes can vary depending on the implementation method. For example, in Figure 17In one example of the bearing shown, the number, arrangement, angle, spacing, and size of the inclined holes 1398 and 1399 are the same. However, the inclined holes 1399 for the leading edge 1390 may be smaller, fewer in number, or have different angles relative to the radial direction than the inclined holes 1398 for the trailing edge 1378. In some embodiments, angle T is the same as angle L. In other embodiments, angle T is different from angle L. In one embodiment, angle L and angle T are between approximately 40 degrees and 70 degrees.

[0180] exist Figures 13 to 17 In the example shown, a lubrication device is provided between each pair of adjacent pads. Each lubrication device can direct lubrication in one or more directions. In some embodiments, two or more lubrication devices are provided between adjacent pads. In some embodiments, the bearing housing includes independent ridges, oil injection pipes, or pad retainers at the leading and trailing edges of adjacent pads.

[0181] In the various embodiments described above, the directional lubrication device is disposed in a bearing having a pad module with an integral support element, the pad module being detachable from the housing or disposed within a housing having an integral support element that can be connected to the detachable pad. However, in other embodiments, the pad, housing, and connecting web may be integrally formed with each other (see, for example, [reference needed]). Figure 17 Therefore, in some embodiments, the bearing can be manufactured as a single piece, for example, by electrical discharge machining.

[0182] In the above combination Figures 1 to 17 In the various embodiments described, modular pads and / or lubrication devices are applied to radial bearings. In other embodiments, modular, web-connected pads and / or lubrication devices are applied to other types of bearings. Figure 18 This is a schematic diagram of a thrust bearing according to an example. Shaft 1400 is supported by thrust bearing 1402. Thrust bearing 1402 includes bearing housing 1404, pad module 1406, and lubrication device 1408 (for clarity). Figure 18 Only one pad 1406 is shown in the diagram. The pad module 1406 is connected to the bearing housing 1404 via a web 1410. In this example, the web 1410 and the pad module 1406 are integrally formed. The shaft 1400 rotates on the pad 1406. In one embodiment, the thrust bearing 1402 includes five pads evenly distributed circumferentially along the bearing housing 1404.

[0183] The lubrication device 1408 includes a channel 1412 and an orifice 1414. Fluid is delivered to the channel 1412 and guided through the orifice 1414 to the edge 1416 of the pad 1406. In one embodiment, the edge 1416 is the trailing edge of the pad 1406.

[0184] In the various embodiments described herein, the pad is connected to the bearing housing via a web. In some embodiments, the pad may be connected by other types of pivoting elements. Examples of alternative pivoting types include ball-and-socket joints, point contact joints, and line contact joints.

[0185] In the various embodiments described above, the bearing includes four spacers. However, in various embodiments, the bearing may include any number of spacers. In one embodiment, the radial bearing includes five spacers connected by a web.

[0186] Although the disclosed inventive concept includes the content defined in the appended claims, it should be understood that the inventive concept can also be limited according to the following embodiments.

[0187] Example 1 is a hydrodynamic bearing for supporting a shaft, the hydrodynamic bearing comprising: a bearing housing defining an inner surface and one or more axial grooves adjacent to the inner surface; and one or more pad modules, wherein at least one of the one or more pad modules comprises: a pad body; a root portion configured to mate with one of the axial grooves of the bearing housing; and a web portion connecting the pad body and the root portion.

[0188] Example 2 is the hydrodynamic bearing described in Example 1, wherein the web portion is defined as an I-beam shape.

[0189] Example 3 is the hydrodynamic bearing described in Example 1 or Example 2, wherein at least one of the one or more pad modules is connected to the bearing housing such that when the hydrodynamic bearing is mounted on the shaft, the pad body is configured to tilt about an axis parallel to the axis of the shaft.

[0190] Example 4 is a hydrodynamic bearing as described in any one of Examples 1 to 3, wherein the bearing housing is configured to suppress the at least one pad module from separating radially inward relative to the bearing housing.

[0191] Example 5 is a hydrodynamic bearing as described in any one of Examples 1 to 4, wherein at least one of the one or more axial grooves includes a neck, the neck being configured to inhibit the at least one pad module from separating radially inward relative to the bearing housing.

[0192] Example 6 is a hydrodynamic bearing as described in any one of Examples 1 to 5, wherein the pad body, the web portion, and the root portion are integrally formed with each other.

[0193] Example 7 is a hydrodynamic bearing as described in any one of Examples 1 to 6, wherein the bearing housing includes an integral damper.

[0194] Example 8 is a hydrodynamic bearing as described in any one of Examples 1 to 7, wherein the web portion of the at least one pad module is at least partially located in the corresponding axial groove and is located below the inner surface of the bearing housing.

[0195] Example 9 is a hydrodynamic bearing as described in any one of Examples 1 to 8, wherein at least one of the axial grooves is dovetail-shaped.

[0196] Example 10 is a hydrodynamic bearing as described in any one of Examples 1 to 9, wherein the root of at least one pad module has two or more serrated structures, the serrated structures being configured to inhibit the at least one pad module from separating radially inward relative to the bearing housing.

[0197] Example 11 is a hydrodynamic bearing as described in any one of Examples 1 to 10, wherein the root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

[0198] Example 12 is a hydrodynamic bearing as described in any one of Examples 1 to 11, and further includes a fastener configured to connect the at least one pad module to the bearing housing.

[0199] Example 13 is the hydrodynamic bearing described in Example 12, wherein the fastener is configured to suppress axial movement along the axial groove.

[0200] Example 14 is the hydrodynamic bearing described in Example 12, wherein the fastener is inclined relative to the pad module.

[0201] Example 15 is the hydrodynamic bearing described in Example 12, wherein the fastener is arranged radially.

[0202] Example 16 is the hydrodynamic bearing described in Example 12, wherein the fastener is configured to inhibit axial movement of the at least one pad module relative to the bearing housing.

[0203] Example 17 is a hydrodynamic bearing as described in any one of Examples 1 to 16, and further includes a gasket disposed between the root of the at least one gasket module and the bearing housing.

[0204] Example 18 is a hydrodynamic bearing as described in any one of Examples 1 to 17, further comprising one or more lubrication devices configured to supply lubricant to at least one of the one or more pad modules.

[0205] Example 19 is a hydrodynamic bearing as described in any one of Examples 1 to 18, further comprising one or more directional lubrication devices configured to supply lubricant to at least one of the one or more pad modules.

[0206] Example 20 is the hydrodynamic bearing described in Example 19, wherein at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0207] Example 21 is a pad module for a hydrodynamic bearing, the hydrodynamic bearing comprising: a pad body; a root portion configured to mate with an axial groove in the bearing housing; and a web portion having an I-shaped cross-section and connecting the pad body and the root portion.

[0208] Example 22 is a hydrodynamic bearing for supporting a shaft, the hydrodynamic bearing comprising: a bearing housing defining a first surface and one or more receiving portions adjacent to the first surface; and one or more pad modules, wherein at least one of the one or more pad modules comprises: a pad body; a root portion configured to mate with at least one of the receiving portions of the bearing housing; and a web portion having an I-shaped cross section and connecting the pad body and the root portion.

[0209] Example 23 is the hydrodynamic bearing described in Example 22, wherein at least one of the receiving portions is configured to prevent the at least one pad module from separating from the bearing housing.

[0210] Example 24 is the hydrodynamic bearing described in Example 22 or Example 23, wherein: the first surface is an inner surface; and at least one of the receiving portions is configured to inhibit the at least one pad module from separating radially inward relative to the bearing housing.

[0211] Example 25 is a hydrodynamic bearing as described in any one of Examples 22 to 24, wherein the hydrodynamic bearing is a radial bearing with tiltable pads.

[0212] Example 26 is a dynamic pressure bearing as described in any one of Examples 22 to 24, wherein the dynamic pressure bearing is a tiltable pad thrust bearing.

[0213] Example 27 is the hydrodynamic bearing described in any one of Examples 22 to 26, and further includes one or more directional lubrication devices.

[0214] Example 28 is a hydrodynamic bearing as described in any one of Examples 22 to 26, further comprising one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0215] Example 29 is a hydrodynamic bearing, comprising: a bearing housing module, which includes: a housing body; one or more pad mounting portions; and one or more web portions having an I-shaped cross-section, wherein at least one of the one or more web portions connects one of the pad mounting portions to the housing body; and one or more pads, which are respectively connected to at least one of the one or more pad mounting portions.

[0216] Example 30 is a method for maintaining a hydrodynamic bearing, the method comprising: disassembling a pad module from a mating state in a receiving portion of a bearing housing; and installing the root of a replacement pad module into the receiving portion of the bearing housing such that the pad body of the replacement pad module is supported by the web portion of the pad module, and such that the pad body is configured to tilt relative to the root of the replacement pad module.

[0217] Example 31 is the method described in Example 30, wherein the mating of the root of the replacement pad module with the receiving portion inhibits its radial inward separation relative to the bearing housing.

[0218] Example 32 is the method described in Example 30 or Example 31, wherein: the receiving portion includes an axial groove; and installing the replacement pad module includes sliding the replacement pad module along at least a portion of the receiving portion, thereby causing the root to mate with the axial groove.

[0219] Example 33 is the method described in any one of Examples 30 to 32, and further includes installing a fastener to secure the root of the replacement pad module to the bearing housing.

[0220] Example 34 is the method described in any one of Examples 31 to 33, and further includes providing a gasket between the root of the replacement gasket module and the bearing housing.

[0221] Example 35 is a method for manufacturing a hydrodynamic bearing, the method comprising: positioning a pad in a bearing housing; and fixing the pad to the bearing housing such that a web portion connecting the pad to the bearing housing is at least partially located within a receiving portion in the bearing housing.

[0222] Example 36 describes the method described in Example 35, wherein the receiving portion is an axial groove.

[0223] Example 37 is the method described in Example 35 or Example 36, wherein the web portion is integrally formed with the pad block.

[0224] Example 38 is the method described in any one of Examples 35 to 37, wherein the web portion is integrally formed with the bearing housing.

[0225] Example 39 is the method described in any one of Examples 35 to 38, and further includes installing a fastener to secure the root of the pad to the bearing housing.

[0226] Example 40 is the method described in any one of Examples 35 to 39, and further includes providing a gasket between the gasket block and the bearing housing.

[0227] Example 41 is a hydrodynamic bearing for supporting a shaft, the hydrodynamic bearing comprising: a bearing housing defining one or more inner surfaces; one or more pad modules, wherein at least one of the one or more pad modules includes: a pad body; a root including one or more axially projecting portions; and a pivot portion connecting the root to the pad body; and one or more fasteners configured to connect at least one of the axially projecting portions of the root to at least one of the inner surfaces of the bearing housing.

[0228] Example 42 is the hydrodynamic bearing described in Example 41, wherein the pivot is configured to allow the pad body to tilt relative to the axis of the bearing housing.

[0229] Example 43 is the hydrodynamic bearing described in Example 41 or Example 42, wherein at least one of the one or more pad modules is connected to the bearing housing such that when the hydrodynamic bearing is mounted on the shaft, the pad body is configured to tilt about an axis parallel to the axis of the shaft.

[0230] Example 44 is a hydrodynamic bearing as described in any one of Examples 41 to 43, wherein the root portion includes one or more pairs of opposing axial protrusions.

[0231] Example 45 is a hydrodynamic bearing as described in any one of Examples 41 to 44, wherein the root includes a base portion configured to accommodate the pivot portion.

[0232] Example 46 is a hydrodynamic bearing as described in any one of Examples 41 to 45, wherein the pivot portion includes a rod-shaped member.

[0233] Example 47 is a hydrodynamic bearing as described in any one of Examples 41 to 46, wherein the pivot portion includes a web portion.

[0234] Example 48 is a hydrodynamic bearing as described in any one of Examples 41 to 47, wherein the pivot portion and the pad body are integrally formed together.

[0235] Example 49 is a hydrodynamic bearing as described in any one of Examples 41 to 48, wherein at least one of the one or more fasteners is mounted on the radial surface of the bearing housing.

[0236] Example 50 is a hydrodynamic bearing as described in any one of Examples 41 to 49, wherein at least one of the one or more fasteners is mounted on the axial surface of the bearing housing.

[0237] Example 51 is a hydrodynamic bearing as described in any one of Examples 41 to 50, wherein the bearing housing includes an integral damper.

[0238] Example 52 is a hydrodynamic bearing as described in any one of Examples 41 to 51, wherein the root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

[0239] Example 53 is a hydrodynamic bearing as described in any one of Examples 41 to 52, further comprising a fastener configured to connect the at least one pad module to the bearing housing.

[0240] Example 54 is a hydrodynamic bearing as described in any one of Examples 41 to 53, further comprising a gasket disposed between the root of the at least one gasket module and the bearing housing.

[0241] Example 55 is a hydrodynamic bearing as described in any one of Examples 41 to 54, further comprising one or more lubrication devices configured to supply lubricant to the at least one pad module.

[0242] Example 56 is a hydrodynamic bearing as described in any one of Examples 41 to 55, further comprising one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

[0243] Example 57 is the hydrodynamic bearing described in Example 56, wherein at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0244] Example 58 is a hydrodynamic bearing as described in any one of Examples 41 to 57, further comprising one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0245] Example 59 is a hydrodynamic bearing for supporting a shaft, the hydrodynamic bearing comprising: a bearing housing defining one or more inner surfaces; one or more pad modules, wherein at least one of the one or more pad modules includes: a pad body; a pivot portion integrally formed with the pad body; and a root portion; wherein the pivot portion is configured to allow the at least one pad body to tilt relative to the axis of the bearing housing.

[0246] Example 60 is the hydrodynamic bearing described in Example 59, wherein the root portion includes one or more pairs of opposing axial protrusions.

[0247] Example 61 is the hydrodynamic bearing described in Example 59 or Example 60, and further includes one or more fasteners configured to connect the root to the bearing housing.

[0248] Example 62 is a hydrodynamic bearing as described in any one of Examples 59 to 61, wherein the root includes a base portion configured to accommodate the pivot portion.

[0249] Example 63 is a hydrodynamic bearing as described in any one of Examples 59 to 62, wherein the pivot portion includes a rod-shaped member.

[0250] Example 64 is a hydrodynamic bearing as described in any one of Examples 59 to 63, wherein the pivot portion includes a web portion.

[0251] Example 65 is a hydrodynamic bearing as described in any one of Examples 59 to 64, wherein at least one of the one or more fasteners is mounted on the radial surface of the bearing housing.

[0252] Example 66 is a hydrodynamic bearing as described in any one of Examples 59 to 65, wherein at least one of the one or more fasteners is mounted on the axial surface of the bearing housing.

[0253] Example 67 is a hydrodynamic bearing as described in any one of Examples 59 to 66, wherein the bearing housing includes an integral damper.

[0254] Example 68 is a hydrodynamic bearing as described in any one of Examples 59 to 67, wherein the root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

[0255] Example 69 is a hydrodynamic bearing as described in any one of Examples 59 to 68, further comprising a fastener configured to connect the at least one pad module to the bearing housing.

[0256] Example 70 is a hydrodynamic bearing as described in any one of Examples 59 to 69, and further includes a gasket disposed between the root of the at least one gasket module and the bearing housing.

[0257] Example 71 is the hydrodynamic bearing described in any one of Examples 59 to 70, and further includes one or more lubrication devices configured to supply lubricant to the at least one pad module.

[0258] Example 72 is the hydrodynamic bearing described in any one of Examples 59 to 71, and further includes one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

[0259] Example 73 is the hydrodynamic bearing described in Example 72, wherein at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0260] Example 74 is the hydrodynamic bearing described in Example 73, and further includes one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0261] Example 75 is a hydrodynamic bearing for supporting a shaft, the hydrodynamic bearing comprising: a bearing housing defining one or more inner surfaces; one or more pad modules, wherein at least one of the pad modules includes: a pad; and a pad support configured to allow the pad to tilt relative to the axis of the bearing housing, the pad support including: a base; and a pivot element connected between the pad and the base.

[0262] Example 76 is the hydrodynamic bearing described in Example 75, and further includes one or more fasteners configured to connect the base to the bearing housing.

[0263] Example 77 is the hydrodynamic bearing described in Example 75 or Example 76, wherein: the base includes: a pivot element connection portion; and one or more axially extending portions from the pivot element connection portion, and at least one of the one or more fasteners is configured to connect at least one of the axially extending portions of the at least one pad module to the bearing housing.

[0264] Example 78 is a hydrodynamic bearing as described in any one of Examples 75 to 77, wherein the base includes an axial protrusion in each of the two opposite axial directions of the pivot element connection, and the one or more fasteners include at least one fastener configured to connect each of the opposite axial protrusions to the base.

[0265] Example 79 is a hydrodynamic bearing as described in any one of Examples 75 to 78, and further includes a gasket disposed between the base and the bearing housing.

[0266] Example 80 is a hydrodynamic bearing as described in any one of Examples 75 to 79, and further includes a gasket disposed between the gasket block and the pivot element.

[0267] Example 81 is a hydrodynamic bearing as described in any one of Examples 75 to 80, wherein the bearing housing includes an integral damper.

[0268] Example 82 is the hydrodynamic bearing described in any one of Examples 75 to 81, and further includes one or more lubrication devices configured to supply lubricant to the at least one pad module.

[0269] Example 83 is the hydrodynamic bearing described in any one of Examples 75 to 82, and further includes one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

[0270] Example 84 is the hydrodynamic bearing described in Example 83, wherein at least one of the directional lubrication devices is integrally formed with the bearing housing.

[0271] Example 85 is the hydrodynamic bearing described in any one of Examples 75 to 84, and further includes one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

[0272] Specific embodiments of this subject matter have been described. Other embodiments, modifications, and variations of the described embodiments will be apparent to those skilled in the art without departing from the scope of the following claims. Although operations are shown in a particular order in the drawings or claims, it should not be construed as meaning that these operations must be performed in the specific order or sequence shown, or that all of the shown operations must be performed (some operations may be considered optional) to achieve the desired result.

[0273] Therefore, the exemplary embodiments described above do not limit or restrict this disclosure. Other modifications, substitutions, and alterations may be made without departing from the spirit and scope of this disclosure.

Claims

1. A hydrodynamic bearing for supporting a shaft, characterized in that, include: A bearing housing defining an inner surface and one or more axial grooves adjacent to said inner surface; as well as One or more pad modules, wherein at least one of the one or more pad modules includes: Pad body; A portion thereof, configured to mate with one of the axial grooves of the bearing housing; and A web portion, which connects the pad body to the root portion.

2. The hydrodynamic bearing according to claim 1, wherein, The web portion is defined as an I-shaped cross section.

3. The hydrodynamic bearing according to claim 1 or 2, wherein, At least one of the one or more pad modules mates with the bearing housing such that when the hydrodynamic bearing is mounted on the shaft, the pad body is configured to tilt about an axis parallel to the axis of the shaft.

4. The hydrodynamic bearing according to any one of the preceding claims, wherein, The bearing housing is configured to prevent the at least one pad module from separating radially inward relative to the bearing housing.

5. The hydrodynamic bearing according to any one of the preceding claims, wherein, At least one of the one or more axial grooves includes a neck configured to inhibit radially inward separation of the at least one pad module relative to the bearing housing.

6. The hydrodynamic bearing according to any one of the preceding claims, wherein, The pad body, the web portion, and the root portion are integrally formed together.

7. The hydrodynamic bearing according to any one of the preceding claims, wherein, The bearing housing includes an integral damper.

8. The hydrodynamic bearing according to any one of the preceding claims, wherein, The web portion of the at least one pad module is at least partially located in the corresponding axial groove and is located below the inner surface of the bearing housing.

9. The hydrodynamic bearing according to any one of the preceding claims, wherein, At least one of the axial grooves is dovetail-shaped.

10. The hydrodynamic bearing according to any one of the preceding claims, wherein, The root of at least one pad module has two or more serrated structures configured to inhibit radial inward separation of the at least one pad module relative to the bearing housing.

11. The hydrodynamic bearing according to any one of the preceding claims, wherein, The root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

12. The hydrodynamic bearing according to any of the preceding claims further includes a fastener configured to connect the at least one pad module to the bearing housing.

13. The hydrodynamic bearing according to claim 12, wherein, The fastener is configured to inhibit axial movement along the axial groove.

14. The hydrodynamic bearing according to claim 12, wherein, The fastener is inclined relative to the pad module.

15. The hydrodynamic bearing according to claim 12, wherein, The fasteners are arranged radially.

16. The hydrodynamic bearing according to claim 12, wherein, The fastener is configured to inhibit axial movement of the at least one pad module relative to the bearing housing.

17. The hydrodynamic bearing according to any of the preceding claims further includes a gasket disposed between the root of the at least one gasket module and the bearing housing.

18. The hydrodynamic bearing according to any of the preceding claims further includes one or more lubrication devices configured to supply lubricant to at least one of the one or more pad modules.

19. The hydrodynamic bearing according to any of the preceding claims further includes one or more directional lubrication devices configured to supply lubricant to at least one of the one or more pad modules.

20. The hydrodynamic bearing according to claim 19, wherein, At least one of the directional lubrication devices is integrally formed with the bearing housing.

21. A method for manufacturing a hydrodynamic bearing, characterized in that, include: Position a pad in a bearing housing; as well as The pad is secured to the bearing housing such that a web that connects the pad to the bearing housing is at least partially located within a receiving portion of the bearing housing.

22. The method according to claim 21, wherein, The receiving part is an axial groove.

23. The method according to claim 21 or 22, wherein, The web plate is integrally formed with the pad block.

24. The method according to any one of claims 21 to 23, wherein, The web is integrally formed with the bearing housing.

25. The method according to any one of claims 21 to 24, further comprising installing a fastener to secure the root of the pad to the bearing housing.

26. The method according to any one of claims 21 to 25, further comprising providing a gasket between the gasket block and the bearing housing.

27. A hydrodynamic bearing for supporting a shaft, characterized in that, include: A bearing housing defining a first surface and one or more receiving portions adjacent to the first surface; as well as One or more pad modules, wherein at least one of the one or more pad modules includes: Pad body; A portion thereof, configured to mate with at least one of the receiving portions of the bearing housing; and An I-shaped web portion connects the pad body to the root portion.

28. The hydrodynamic bearing according to claim 27, wherein, At least one of the receiving portions is configured to prevent the at least one pad module from separating from the bearing housing.

29. The hydrodynamic bearing according to claim 27 or 28, wherein: The first surface is an inner surface; and At least one of the receiving portions is configured to prevent the at least one pad module from separating radially inward relative to the bearing housing.

30. The hydrodynamic bearing according to claim 27, wherein, The hydrodynamic bearing is a radial bearing with tiltable pads.

31. The hydrodynamic bearing according to claim 27, wherein, The hydrodynamic bearing is a tiltable pad thrust bearing.

32. The hydrodynamic bearing according to claim 27 further includes one or more directional lubrication devices.

33. The hydrodynamic bearing of claim 27 further includes one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

34. A hydrodynamic bearing for supporting a shaft, characterized in that, include: A bearing housing that defines one or more inner surfaces; as well as One or more pad modules, wherein at least one of the one or more pad modules includes: Pad body; A pivot portion integrally formed with the pad body; and One root; The pivot portion is configured to allow the at least one pad body to tilt relative to the axis of the bearing housing.

35. The hydrodynamic bearing according to claim 34, wherein, The root portion includes one or more pairs of axially protruding portions arranged opposite each other.

36. The hydrodynamic bearing of claim 34 or 35 further comprises one or more fasteners configured to connect the root to the bearing housing.

37. The hydrodynamic bearing according to any one of claims 34 to 36, wherein, The root portion includes a base portion configured to accommodate the pivot portion.

38. The hydrodynamic bearing according to any one of claims 34 to 37, wherein, The pivot portion includes a rod-shaped member.

39. The hydrodynamic bearing according to any one of claims 34 to 38, wherein, The pivot portion includes a web portion.

40. The hydrodynamic bearing according to any one of claims 34 to 39, wherein, At least one of the one or more fasteners is mounted on the radial surface of the bearing housing.

41. The hydrodynamic bearing according to any one of claims 34 to 40, wherein, At least one of the one or more fasteners is mounted on the axial surface of the bearing housing.

42. The hydrodynamic bearing according to any one of claims 34 to 41, wherein, The bearing housing includes an integral damper.

43. The hydrodynamic bearing according to any one of claims 34 to 42, wherein, The root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

44. The hydrodynamic bearing according to any one of claims 34 to 43, further comprising a fastener configured to connect the at least one pad module to the bearing housing.

45. The hydrodynamic bearing according to any one of claims 34 to 44, further comprising a gasket disposed between the root of the at least one gasket module and the bearing housing.

46. ​​The hydrodynamic bearing according to any one of claims 34 to 45, further comprising one or more lubrication devices configured to supply lubricant to the at least one pad module.

47. The hydrodynamic bearing according to any one of claims 34 to 46, further comprising one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

48. The hydrodynamic bearing according to claim 47, wherein, At least one of the directional lubrication devices is integrally formed with the bearing housing.

49. The hydrodynamic bearing of claim 48 further comprises one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

50. A hydrodynamic bearing for supporting a shaft, characterized in that, include: A bearing housing that defines one or more inner surfaces; One or more pad modules, wherein at least one of the pad modules comprises: A pad; and A pad support member configured to allow the pad to tilt relative to the axis of the bearing housing, the pad support member comprising: One base; and A pivot element is disposed between the pad and the base.

51. The hydrodynamic bearing of claim 50, further comprising one or more fasteners configured to connect the base to the bearing housing.

52. The hydrodynamic bearing according to claim 50 or 51, wherein: The base includes: A pivot element connection part; and One or more axially extending protrusions from the pivot element connection portion. Furthermore, at least one of the one or more fasteners is configured to connect at least one of the axial protrusions of the at least one pad module to the bearing housing.

53. The hydrodynamic bearing according to any one of claims 50 to 52, wherein, The base includes axial protrusions extending from the pivot element connection in opposite axial directions, and the one or more fasteners include at least one fastener configured to connect each of the opposite axial protrusions to the base.

54. The hydrodynamic bearing according to any one of claims 50 to 53, further comprising a gasket disposed between the base and the bearing housing.

55. The hydrodynamic bearing according to any one of claims 50 to 54, further comprising a gasket disposed between the gasket and the pivot element.

56. The hydrodynamic bearing according to any one of claims 50 to 55, wherein, The bearing housing includes an integral damper.

57. The hydrodynamic bearing according to any one of claims 50 to 56, further comprising one or more lubrication devices configured to supply lubricant to the at least one pad module.

58. The hydrodynamic bearing according to any one of claims 50 to 57, further comprising one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

59. The hydrodynamic bearing according to claim 58, wherein, At least one of the directional lubrication devices is integrally formed with the bearing housing.

60. The hydrodynamic bearing according to any one of claims 50 to 59, further comprising one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

61. A method for maintaining a hydrodynamic bearing, characterized in that, include: Disassemble a pad module from its mating position in the receiving part of a bearing housing; as well as The root of a replacement pad module is installed in the receiving portion of the bearing housing such that the pad body of the replacement pad module is supported by the web portion of the pad module, and the pad body is configured to tilt relative to the root of the replacement pad module.

62. The method according to claim 61, wherein, The mating of the root of the replacement pad module with the receiving portion prevents it from separating radially inward relative to the bearing housing.

63. The method according to claim 61 or 62, wherein: The receiving portion includes an axial groove; and Installing the replacement pad module includes sliding the replacement pad module along at least a portion of the receiving portion, thereby engaging the root with the axial groove.

64. The method according to any one of claims 61 to 63, further comprising installing a fastener to secure the root of the replacement pad module to the bearing housing.

65. The method according to any one of claims 61 to 64, further comprising providing a gasket between the root of the replacement gasket module and the bearing housing.

66. A pad module for a hydrodynamic bearing, characterized in that, include: Pad body; One part is configured to mate with the axial groove of the bearing housing; as well as An I-shaped web portion connects the pad body to the root portion.

67. A hydrodynamic bearing, characterized in that, include: A bearing housing module, comprising: One shell body; One or more pad mounting parts; and One or more I-shaped web portions, wherein at least one of the one or more I-shaped web portions connects one of the pad mounting portions to the housing body; and One or more pads, each connected to at least one of the one or more pad mounting portions.

68. A hydrodynamic bearing for supporting a shaft, characterized in that, include: A bearing housing that defines one or more inner surfaces; One or more pad modules, wherein at least one of the one or more pad modules includes: Pad body; A root portion, comprising one or more axially projecting portions; and A pivot portion connecting the root portion to the pad body; and One or more fasteners configured to connect at least one of the axial protrusions at the root to at least one of the inner surfaces of the bearing housing.

69. The hydrodynamic bearing according to claim 68, wherein, The pivot is configured to allow the pad body to tilt relative to the axis of the bearing housing.

70. The hydrodynamic bearing according to claim 68 or 69, wherein, At least one of the one or more pad modules is connected to the bearing housing such that when the hydrodynamic bearing is mounted on the shaft, the pad body is configured to tilt about an axis parallel to the axis of the shaft.

71. The hydrodynamic bearing according to any one of claims 68 to 70, wherein, The root portion includes one or more pairs of axially protruding portions arranged opposite each other.

72. The hydrodynamic bearing according to any one of claims 68 to 71, wherein, The root portion includes a base portion configured to accommodate the pivot portion.

73. The hydrodynamic bearing according to any one of claims 68 to 72, wherein, The pivot portion includes a rod-shaped member.

74. The hydrodynamic bearing according to any one of claims 68 to 73, wherein, The pivot portion includes a web portion.

75. The hydrodynamic bearing according to any one of claims 68 to 74, wherein, The pivot portion and the pad body are integrally formed together.

76. The hydrodynamic bearing according to any one of claims 68 to 75, wherein, At least one of the one or more fasteners is mounted on the radial surface of the bearing housing.

77. The hydrodynamic bearing according to any one of claims 68 to 76, wherein, At least one of the one or more fasteners is mounted on the axial surface of the bearing housing.

78. The hydrodynamic bearing according to any one of claims 68 to 77, wherein, The bearing housing includes an integral damper.

79. The hydrodynamic bearing according to any one of claims 68 to 78, wherein, The root of at least one of the one or more pad modules is outwardly flared relative to the web portion.

80. The hydrodynamic bearing according to any one of claims 68 to 79, further comprising a fastener configured to connect the at least one pad module to the bearing housing.

81. The hydrodynamic bearing according to any one of claims 68 to 80, further comprising a gasket disposed between the root of the at least one gasket module and the bearing housing.

82. The hydrodynamic bearing according to any one of claims 68 to 81, further comprising one or more lubrication devices configured to supply lubricant to the at least one pad module.

83. The hydrodynamic bearing according to any one of claims 68 to 82, further comprising one or more directional lubrication devices configured to direct lubricant to one or more surfaces of the at least one pad module.

84. The hydrodynamic bearing according to claim 83, wherein, At least one of the directional lubrication devices is integrally formed with the bearing housing.

85. The hydrodynamic bearing according to any one of claims 68 to 84, further comprising one or more lubrication devices configured to supply lubricant to the trailing edge of the at least one pad module.

Images