TILTING PAD BEARING DEVICE

摘要

An object is to provide a tilting-pad bearing device whereby it is possible to levitate a rotation shaft with a low supply-oil pressure. A tilting-pad bearing device includes a plurality of bearing pads disposed around a rotation shaft so as to support the rotation shaft rotatably, a support member interposed between the plurality of bearing pads and a bearing housing supporting the plurality of bearing pads, the support member supporting each of the plurality of bearing pads pivotably, and an oil-supply mechanism configured to supply a lubricant oil to at least one oil groove formed on a bearing surface of at least one of the plurality of bearing pads. The at least one oil groove is disposed inside and outside a contact area of the bearing surface which is in contact with an outer circumferential surface of the rotation shaft when the rotation shaft is stopped.

主权项

1. A tilting-pad bearing device, comprising:
a plurality of bearing pads disposed around a rotation shaft so as to support the rotation shaft rotatably; a support member interposed between the plurality of bearing pads and a bearing housing supporting the plurality of bearing pads, the support member supporting each of the plurality of bearing pads pivotably; and an oil-supply mechanism configured to supply a lubricant oil to at least one oil groove formed on a bearing surface of at least one of the plurality of bearing pads, wherein the support member is disposed so as to be offset from a middle position of the at least one bearing pad in a rotational direction of the rotation shaft, toward an upstream side or a downstream side in the rotational direction of the rotation shaft, and wherein a weighted mean position of the at least one oil groove representing a mean position of a respective center position of the at least one oil groove in a circumferential direction of the rotation shaft weighted by a respective opening area of the at least one oil groove is offset from an arrangement position of the support member, in an offset direction of the support member based on the middle position.