Bearings and Bearing Pads

Abstract

The present invention provides a bearing and a bearing pad capable of suppressing deformation of the bearing pad without increasing the cost. A through flow path (3) is provided in the bearing pad (2), and the through flow path (3) extends from the first The opening (3a) extends to the side away from the supported surface (1a) and reaches the second opening (3d).

Description

Technical field

[0001] The present invention relates to a bearing that rotatably supports a rotating shaft via a bearing pad and supplies lubricating oil between the bearing pad and the rotating shaft, and a bearing pad thereof. Background technique

[0002] Incline pad bearings and thrust pad bearings, which consist of multiple independent bearing pads on the bearing surface, have the characteristic of quickly absorbing the vibration of the rotating shaft. In rotating machinery such as steam turbines and gas turbines, such bearings are widely used in view of the above-mentioned characteristics. In recent years, in such rotating machines, the demand for higher output and lower loss has been further increased compared to the past. Therefore, it is necessary to reduce the size of the bearing that supports the rotating shaft of the rotating machine to keep the bearing loss small. However, when the size of the bearing is reduced, the bearing loss can be suppressed, but on the contr...

Examples

no. 1 approach

[0043] use Figure 1 ~ Figure 3 B describes the diagonal pad radial bearing and the bearing pad for the radial bearing as the first embodiment of the present invention.

[0044] [1-1. Overall structure of inclined pad radial bearing]

[0045] Such as figure 1 As shown, the bearing 100 as the first embodiment of the present invention constitutes the following radial bearing, which can rotate in the radial direction in the direction indicated by arrow A (hereinafter, also referred to as the rotation direction) in a rotatable manner Axis 1 is supported.

[0046] That is, the bearing 100 includes a plurality of (here, two) tilt pads (bearing pads according to the first embodiment of the present invention) 2 to support the rotating shaft 1 from vertically below; the bearing housing 4 is arranged in The circumference of the rotating shaft 1 and the inclined gasket 2; and the oil supply nozzle 6, which sprays lubricating oil from the spray portion 6a at the tip.

[0047] A plurality of (he...

no. 2 approach

[0077] use image 3 A and image 3 B describes the bearing and the bearing pad as the second embodiment of the present invention. In addition, the same reference numerals are given to the same constituent elements as those of the first embodiment, and the description thereof is omitted.

[0078] [2-1. Tilt Pad Radial Bearing and Tilt Pad Structure for Radial Bearing]

[0079] As the bearing device of the second embodiment of the present invention, with respect to figure 1 The bearing 100 of the first embodiment shown is used instead of the tilt pad 2 image 3 A and image 3 The inclined pad shown in B (as the bearing pad of the second embodiment of the present invention) 2A.

[0080] In the inclined gasket 2 of the first embodiment, the outlet 3d through the flow path 3 is arranged on the back surface 2b of the gasket. In contrast, in the inclined gasket 2A of the present embodiment, the outlet 3d through the flow path 3A is arranged on the inclined The front surface of the pad 2A f...

no. 3 approach

[0087] use Figure 4 A. Figure 4 B. Figure 5 A and Figure 5 B describes the bearing and the bearing pad as the third embodiment of the present invention. In addition, the same reference numerals are given to the same constituent elements as in the above-mentioned respective embodiments, and the description thereof is omitted.

[0088] [3-1. Overall structure of tilt pad thrust bearing]

[0089] Such as Figure 4 A and Figure 4 As indicated by B, the bearing 200 as the third embodiment of the present invention is configured as a thrust bearing that supports the rotating shaft 21 rotating in the direction indicated by the arrow A (hereinafter, also referred to as the rotation direction) from the axial direction.

[0090] That is, the bearing 200 includes a tilt pad (bearing pad according to the third embodiment of the present invention) 22 for rotatably in the axial direction against a thrust ring integrated with the rotating shaft 21 in a flange shape (by The support portion) 21a...

Technical field

[0001] The present invention relates to a bearing that rotatably supports a rotating shaft via a bearing pad and supplies lubricating oil between the bearing pad and the rotating shaft, and a bearing pad thereof. Background technique

[0002] Incline pad bearings and thrust pad bearings, which consist of multiple independent bearing pads on the bearing surface, have the characteristic of quickly absorbing the vibration of the rotating shaft. In rotating machinery such as steam turbines and gas turbines, such bearings are widely used in view of the above-mentioned characteristics. In recent years, in such rotating machines, the demand for higher output and lower loss has been further increased compared to the past. Therefore, it is necessary to reduce the size of the bearing that supports the rotating shaft of the rotating machine to keep the bearing loss small. However, when the size of the bearing is reduced, the bearing loss can be suppressed, but on the contr...

Examples

no. 1 approach

[0043] use Figure 1 ~ Figure 3 B describes the diagonal pad radial bearing and the bearing pad for the radial bearing as the first embodiment of the present invention.

[0044] [1-1. Overall structure of inclined pad radial bearing]

[0045] Such as figure 1 As shown, the bearing 100 as the first embodiment of the present invention constitutes the following radial bearing, which can rotate in the radial direction in the direction indicated by arrow A (hereinafter, also referred to as the rotation direction) in a rotatable manner Axis 1 is supported.

[0046] That is, the bearing 100 includes a plurality of (here, two) tilt pads (bearing pads according to the first embodiment of the present invention) 2 to support the rotating shaft 1 from vertically below; the bearing housing 4 is arranged in The circumference of the rotating shaft 1 and the inclined gasket 2; and the oil supply nozzle 6, which sprays lubricating oil from the spray portion 6a at the tip.

[0047] A plurality of (he...

no. 2 approach

[0077] use image 3 A and image 3 B describes the bearing and the bearing pad as the second embodiment of the present invention. In addition, the same reference numerals are given to the same constituent elements as those of the first embodiment, and the description thereof is omitted.

[0078] [2-1. Tilt Pad Radial Bearing and Tilt Pad Structure for Radial Bearing]

[0079] As the bearing device of the second embodiment of the present invention, with respect to figure 1 The bearing 100 of the first embodiment shown is used instead of the tilt pad 2 image 3 A and image 3 The inclined pad shown in B (as the bearing pad of the second embodiment of the present invention) 2A.

[0080] In the inclined gasket 2 of the first embodiment, the outlet 3d through the flow path 3 is arranged on the back surface 2b of the gasket. In contrast, in the inclined gasket 2A of the present embodiment, the outlet 3d through the flow path 3A is arranged on the inclined The front surface of the pad 2A f...

no. 3 approach

[0087] use Figure 4 A. Figure 4 B. Figure 5 A and Figure 5 B describes the bearing and the bearing pad as the third embodiment of the present invention. In addition, the same reference numerals are given to the same constituent elements as in the above-mentioned respective embodiments, and the description thereof is omitted.

[0088] [3-1. Overall structure of tilt pad thrust bearing]

[0089] Such as Figure 4 A and Figure 4 As indicated by B, the bearing 200 as the third embodiment of the present invention is configured as a thrust bearing that supports the rotating shaft 21 rotating in the direction indicated by the arrow A (hereinafter, also referred to as the rotation direction) from the axial direction.

[0090] That is, the bearing 200 includes a tilt pad (bearing pad according to the third embodiment of the present invention) 22 for rotatably in the axial direction against a thrust ring integrated with the rotating shaft 21 in a flange shape (by The support portion) 21a...

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