JP6304471B2 - Bearing device and rotating machine - Google Patents

Description

  The present invention relates to a cooling structure for a bearing device provided in a rotary machine.

  Conventionally, pad bearings have been known as bearing devices applied to large rotating machines such as steam turbines, gas turbines, and nuclear turbines. In addition, as such a pad bearing, a plurality of bearing pads are arranged at intervals along the circumferential direction of the rotating shaft, and the gap between the bearing pad and the rotating shaft and the flow path inside the bearing pad are arranged. A technique for supplying oil to cool a bearing pad is known (see, for example, Patent Document 1).

  And when such a conventional bearing device 201 is a radial bearing, for example, as shown in FIG. 10, two bearing pads 202A and 202B provided in the lower half portion of the bearing device 201 (the lower side in FIG. 10). The rotating shaft 200 is supported by the oil, and the oil W1 introduced from the oil inlet 206 is formed in the bearing casing 203 through an oil supply port 204 that opens to the inner peripheral surface 203a of the bearing casing 203 in the upper half of the bearing device 201. And the rotary shaft 200 is supplied to the gap. The groove 205 formed on the inner peripheral surface 203a of the bearing casing 203 at the circumferential position between the bearing pad 202A on the front side in the rotational direction of the rotary shaft 200 and the oil supply port 204, and the viscosity due to the rotation of the rotary shaft 200. The oil W1 supplied from the oil supply port 204 by the pump action flows toward the bearing pad 202A. Thereafter, the oil W1 is branched into the surface of the bearing pad 202A, which is a gap between the rotating shaft 200 and the bearing pad 202A, and the flow path FC formed inside the bearing pad 202A, and toward the rear side in the rotational direction. Circulate. Further, the oil W1 after flowing through the surface of the bearing pad 202A and the flow path FC merges, and again branches and flows into the surface of the bearing pad 202B on the rear side in the rotation direction and the internal flow path FC. A part of the oil W1 that has cooled the two bearing pads 202A and 202B in this way is discharged from the oil outlet 207, and the rest is carried over to flow again through the bearing pad 202A on the front side in the rotational direction. It will be.

US Pat. No. 6,485,182

  However, with the recent increase in size and speed of rotating machinery, the load on the rotating shaft has increased. As described above, a structure in which a part of the oil that has been heated and recovered is carried over is sufficient. A cooling effect cannot be obtained.

  The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a bearing device and a rotating machine capable of improving the cooling effect of the bearing pad while reducing the amount of oil supply.

In order to solve the above problems, the present invention employs the following means.
That is, the bearing device according to the present invention includes a rotating shaft, and is disposed at intervals in the circumferential direction of the rotating shaft so as to support the rotating shaft, and the inner side from one side to the other side in the circumferential direction. Two bearing pads formed with a flow path penetrating through the two bearing pads, a connection portion that is provided between the two bearing pads and communicates the flow paths of the two bearing pads, and the two bearing pads. One first oil supply section that supplies oil through an opening that opens toward the one side with respect to the flow path of only the bearing pad on the front side in the rotation direction of the rotating shaft, and each of the bearing pads The oil is supplied to each of the two bearing pads between the bearing pads and the rotary shaft through an opening that opens toward the one side. Two second oiling portions.

According to such a bearing device, when the oil is supplied to the flow path inside the bearing pad by the first oil supply section, the oil at the supply temperature always flows inside the bearing pad. Therefore, even if the supply amount of oil is reduced, the bearing pad can be sufficiently cooled, and it becomes possible to prevent seizure of the bearing pad due to a temperature rise.
Moreover, the oil of the temperature at the time of supply always distribute | circulates also to the surface of a bearing pad by the 2nd oil supply part. Therefore, the cooling effect of the bearing pad can be further improved.
Furthermore, oil cooled by flowing through the flow path of one bearing pad can be continuously supplied to the flow path of the adjacent bearing pad. Therefore, the oil supply amount can be further reduced by sharing the oil among the plurality of bearing pads in this way.

  In addition, the bearing device according to the present invention may further include a viscous pump unit that supplies the oil by a viscous pump action.

  Furthermore, a rotating machine according to the present invention includes the above-described bearing device.

  In such a rotating machine, the bearing pad can be sufficiently cooled even if the amount of oil supplied to the bearing device is reduced. Therefore, it is possible to prevent the seizure of the bearing pad due to the temperature rise and improve the performance by improving the cooling effect of the bearing pad.

  According to the bearing device and the rotary machine of the present invention, by supplying oil directly to the flow path of the bearing pad by the first oil supply portion, it is possible to improve the cooling effect of the bearing pad while reducing the amount of oil supply.

It is the whole schematic diagram which looked at the bearing device concerning a first embodiment of the present invention from the axial center direction. It is a perspective view of the shaft center receiving pad of the bearing device concerning a first embodiment of the present invention. It is the whole schematic diagram which looked at the bearing device concerning a second embodiment of the present invention from the axial center direction. It is the whole schematic figure which looked at the bearing device concerning a third embodiment of the present invention from the axial center direction. It is the whole schematic figure which looked at the bearing device concerning a 4th embodiment of the present invention from the direction of an axial center. It is a perspective view of the bearing pad of the bearing apparatus which concerns on 4th embodiment of this invention. It is sectional drawing of the bearing pad of the bearing apparatus which concerns on 4th embodiment of this invention, Comprising: The AA cross section of FIG. 5 is shown. It is sectional drawing of the bearing pad of the bearing apparatus which concerns on 5th embodiment of this invention, Comprising: The same cross section as FIG. 7 is shown. It is a top view of the bearing pad of the bearing apparatus which concerns on 5th embodiment of this invention, Comprising: FIG. 8 is seen from upper direction. It is a whole schematic diagram of a conventional bearing device.

Hereinafter, the bearing apparatus 1 which concerns on 1st embodiment of this invention is demonstrated.
The bearing device 1 rotatably supports the rotary shaft 100 from a radial direction (radial direction) or from an axial center P direction (thrust direction) in a rotary machine such as a steam turbine, a gas turbine, or a nuclear turbine.

  As shown in FIG. 1, the bearing device 1 is a radial bearing that supports the rotating shaft 100 from the outside in the radial direction of the shaft center P. From the rotating shaft 100 and a horizontal line L that passes through the shaft center P of the rotating shaft 100. Are also provided with two bearing pads 2 arranged in the lower half (the lower side of the drawing in FIG. 1) and a bearing casing 9 that supports these bearing pads 2 from the outside in the radial direction. Further, an oil inlet portion 12 that is provided in the bearing casing 9 and introduces cooling oil W to the bearing pad 2 from the outside, an oil outlet portion 13 that discharges the oil W to the outside, and supplies the oil W to the bearing pad 2 The first oiling part 15 and the second oiling part 16 are provided.

  Here, the bearing pad 2 installed on the front side in the rotational direction of the rotating shaft 100 is referred to as a bearing pad 2A, and the bearing pad 2 installed on the rear side in the rotational direction is referred to as a bearing pad 2B.

The bearing pads 2A and 2B are provided at intervals in the circumferential direction of the axis P.
Each bearing pad 2 </ b> A, 2 </ b> B is provided on the radially inner side of the axial center P of the surface layer portion 5, which is provided on the radially inner side of the shaft center P and faces the outer peripheral surface of the rotary shaft 100. The back metal part 6 and the support part 7 provided in the radial direction outer side of the axial center P of the back metal part 6 are provided.

  The surface layer portion 5 has wear resistance and fatigue resistance, and is formed of a soft metal white metal that is welded to the back metal portion 6 so as to conform to the outer peripheral surface of the rotating shaft 100. .

  The back metal part 6 is made of, for example, copper or the like. Further, as shown in FIG. 2, the back metal part 6 is recessed toward the radially inner side of the axis P from the radially outer back surface joined to the support part 7. A groove-like flow path FC1 extending from one end face in the circumferential direction of the axis P toward the other end face is formed. In other words, the flow path FC1 is formed between the back metal part 6 and the support part 7, so that it passes through the inside of the bearing pads 2A and 2B and the front side in the rotational direction of the rotary shaft 100 in the bearing pads 2A and 2B. And the rear side. In the present embodiment, a plurality of the flow paths FC1 are provided at intervals in the direction of the axis P.

  The support portion 7 is made of, for example, copper or the like, and is coupled to the back metal portion 6 to support the back metal portion 6, and a pivot 8 is provided on the radially outer side of the support portion 7, and the pivot 8 is a bearing casing. 9 is in contact with the inner peripheral surface 9 a of the bearing casing 9, and the support portion 7 can swing in the radial direction of the axis P on the inner peripheral side of the bearing casing 9.

  The bearing casing 9 is positioned at the lower half of the horizontal line L so that the two bearing pads 2A and 2B can be accommodated between the rotary shaft 100 and at the upper half of the horizontal line L. Then, it has an annular shape in which an inner peripheral surface 9 a is formed so as to directly face the rotating shaft 100. That is, the bearing casing 9 is formed to have a thin radial dimension in the lower half and a thick thickness in the upper half.

  An oil introduction flow path FC2 is formed inside the lower half of the bearing casing 9 so as to communicate the oil inlet portion 12, the first oil supply portion 15, and the second oil supply portion 16, and is taken in from the outside. The oil W can flow through the oil introduction flow path FC2.

  The oil inlet portion 12 is provided in the bearing casing 9 and opens toward the radially outer side, and communicates with the oil introduction flow path FC2, and the oil W for cooling the bearing pads 2A and 2B is supplied from the outside into the oil introduction flow. It can be introduced into the road FC2. In the present embodiment, the oil inlet 12 is fitted into the bearing casing 9 from the radially outer side at the same circumferential position as the bearing pad 2A. The oil introduction flow path FC2 extends from the oil inlet portion 12 toward the front side in the rotation direction of the bearing pads 2A and 2B.

  The first oil supply section 15 communicates with the oil introduction flow path FC2 and has an opening that opens toward the flow path FC1 of each bearing pad 2A, 2B on the front side in the rotation direction of the bearing pads 2A, 2B. It is a tubular member. In this way, the oil W can be directly supplied to the flow path FC1 via the oil inlet portion 12 and the oil introduction flow path FC2.

  The second oil supply portion 16 is provided to be branched from the first oil supply portion 15 and opens between the respective bearing pads 2A, 2B and the rotary shaft 100, that is, toward the surface of the surface layer portion 5 of the bearing pads 2A, 2B. It is a tubular member having an opening. In this way, the oil W can be directly supplied to the surface of the surface layer portion 5 through the oil inlet portion 12 and the oil introduction flow channel FC2.

  The oil outlet portion 13 is provided in the bearing casing 9 on the rear side in the rotational direction of the bearing pad 2 </ b> B, opens to the radially inner side and opens to the radially outer side, and penetrates the inside and outside of the bearing casing 9. . In this way, the oil W after flowing through the bearing pad 2B can be discharged to the outside.

  In such a bearing device 1, the oil W is supplied to the flow path FC1 of the bearing pads 2A and 2B by the first oil supply section 15, so that the supply at the time when the flow path FC1 is always supplied from the supply port is supplied. The back metal part 6 can be cooled from the back surface while circulating the oil W at the time temperature.

  Therefore, even if the supply amount of the oil W is reduced as a whole, the bearing pads 2A and 2B can be sufficiently cooled, and the surface layer portion 5 of the bearing pads 2A and 2B due to temperature rise is prevented from being melted and seized. It becomes possible.

  Further, the second oil supply portion 16 always causes the oil W at the temperature at the time of supply from the oil inlet portion 12 to flow on the surface of the surface layer portion 5 of the bearing pads 2A and 2B, thereby cooling the bearing pads 2A and 2B. Can be further improved.

  According to the bearing device 1 of the present embodiment, the first oil supply portion 15 and the second oil supply portion 16 directly supply oil to the flow paths FC1 and the surface of the surface layer portion 5 of the bearing pads 2A and 2B, while reducing the amount of oil supply. In addition, the cooling effect of the bearing pads 2A and 2B can be improved.

  Furthermore, the operating loss of the entire bearing device 1 can be reduced by reducing the amount of oil supply, which leads to an improvement in the performance of the bearing device 1.

  In addition, in this embodiment, although the 1st oil supply part 15 and the 2nd oil supply part 16 consist of a tubular member, the opening part opened toward the surface of the surface layer part 5 of bearing pad 2A, 2B, and flow path FC1 For example, it may be a chamber or the like.

  Moreover, in this embodiment, although the 1st oiling part 15 and the 2nd oiling part 16 are installed in each bearing pad 2A, 2B so that oil W can be distribute | circulated to the two bearing pads 2A, 2B, It may be provided on only one of the bearing pads 2A and 2B.

  Furthermore, these bearing pads 2A and 2B are not limited to the case where only two are provided in the lower half as in the present embodiment, and may be provided in the upper half, for example. The position is not limited.

Next, a bearing device 21 according to a second embodiment of the present invention will be described with reference to FIG.
In addition, the same code | symbol is attached | subjected to the same component as 1st embodiment, and detailed description is abbreviate | omitted.
The bearing device 21 of the present embodiment is based on the bearing device 1 of the first embodiment, and instead of the second oiling portion 16 provided on the front side in the rotational direction of the bearing pad 2A of the first embodiment, a viscous pump A portion 22 is provided.

  The bearing casing 29 is substantially the same member as the bearing casing 9 of the first embodiment, but communicates with the oil introduction flow path FC2 on the front side in the rotation direction of the bearing pad 2A and in the upper half of the bearing casing 29. A viscous pump flow path FC3 is formed in the bearing casing 29 so as to extend. This viscous pump flow path FC3 has an oil supply port 23 formed by opening the inner half surface 29a of the bearing casing 29 in the upper half, and thus rotates the oil W from the oil introduction flow path FC2. Oil W can be supplied between the shaft 100 and the bearing casing 29.

  The viscous pump portion 22 is a groove portion that is recessed from the inner peripheral surface 29a of the upper half bearing casing 29 toward the radially outer side on the rear side in the rotational direction of the oil supply port 23.

  In such a bearing device 21, the oil W from the oil inlet portion 12 flows between the rotary shaft 100 and the bearing casing 29 from the oil supply port 23 through the viscous pump flow path FC <b> 3. The inflowing oil W is circulated through the viscous pump portion 22, so that the pressure is increased by the viscous pump action caused by the rotational force of the rotating shaft 100 and circulates through the surface layer portions 5 of the two bearing pads 2 </ b> A and 2 </ b> B.

  The oil W is newly introduced from the second oil supply portion 16 on the front side in the rotational direction of the bearing pad 2B and on the rear side in the rotational direction of the bearing pad 2A, and is mixed with the oil W that has circulated through the bearing pad 2A. The bearing pad 2B will be distributed.

  Furthermore, after circulating through the bearing pad 2B on the rear side in the rotational direction and recovering heat, a part of the oil W is discharged to the outside from the oil outlet 13 and the rest is carried over, so that a new one from the oil filler port 23 is obtained. The oil W is mixed and supplied again to the surface layer portion 5 of the bearing pad 2A on the front side in the rotational direction. In order to prevent all of the oil W after flowing through the bearing pad 2B and recovering heat from being carried over, a part of the rotating shaft is located at the rear side in the rotational direction of the oil outlet 13 and in the vicinity of the horizontal line L. A scraper portion 25 formed narrowly between 100 and the bearing casing 29 is formed.

  According to the bearing device 21 of the present embodiment, the first oil supply unit 15 and the viscous pump unit 22 are provided side by side, so that the bearing pads 2A and 2B are directly cooled from the inside, and the surface layers of the bearing pads 2A and 2B are circulated and cooled. Since the surface of the part 5 can be cooled and cooling can be performed while reducing the amount of oil supplied, the cooling effect can be improved.

  In addition, the 2nd oil supply part 16 which supplies the oil W to the surface of the surface layer part 5 of the bearing pad 2B of the rotation direction back side does not necessarily need to be provided. In this case, the structure of the bearing device 21 can be simplified while directly cooling the bearing pads 2A and 2B from the inside, leading to cost reduction.

Next, a bearing device 31 according to a third embodiment of the present invention will be described with reference to FIG.
In addition, the same code | symbol is attached | subjected to the same component as 1st embodiment and 2nd embodiment, and detailed description is abbreviate | omitted.
The bearing device 31 of the present embodiment is based on the bearing device 21 of the second embodiment, and is a first oiling portion provided on the front side in the rotational direction of the bearing pad 2B and on the rear side in the rotational direction of the bearing pad 2A. Instead of 15, a connection portion 32 is provided.

  The connection portion 32 is installed so as to connect the two bearing pads 2A and 2B between each other, and the inside thereof is a connection channel FC4 formed in the circumferential direction, for example, by a tubular member or the like. is there. The connection channel FC4 communicates the channels FC1 formed in the bearing pads 2A and 2B.

  According to the bearing device 31 of the present embodiment, the oil W that has been cooled by flowing through the flow path FC1 of the bearing pad 2A on the front side in the rotational direction continues to flow in the bearing pad 2B on the rear side in the rotational direction through the connection flow path FC4. It can be supplied to the path FC1.

  Here, after the oil W flows through the flow path FC1 of the bearing pad 2A and the bearing pad 2A is cooled from the inside, the oil W does not increase so much in temperature. Therefore, by reusing this oil W, it is possible to further reduce the oil supply amount of the entire bearing device 31 and to improve the cooling.

Next, a bearing device 41 according to a fourth embodiment of the present invention will be described.
In addition, the same code | symbol is attached | subjected to the same component as 3rd embodiment from 1st embodiment, and detailed description is abbreviate | omitted.
As shown in FIG. 5, the bearing device 41 of the present embodiment is a thrust bearing that supports the rotary shaft 100 from the direction of the axis P.

  The bearing device 41 is provided between the rotating shaft 100, a plurality of bearing pads 42 that are provided at intervals in the circumferential direction and face the rotating shaft 100 from the axis P direction, and the bearing pads 42. And a casing 43 (see FIG. 7) that supports the bearing pad 42 from one side in the direction of the axis P.

These bearing pads 42 are provided so as to face a thrust collar (not shown) provided on the rotary shaft 100 from the direction of the axis P, and as shown in FIG. It is formed in a fan shape when viewed from the direction. Each bearing pad 42 includes, as shown in FIGS. 6 and 7, a surface layer portion 45 facing the thrust collar, a back metal portion 46 provided on one side of the surface layer portion 45 in the axis P direction, And a support portion 47 provided on one side of the back metal portion 46 in the axis P direction.
have.

  The surface layer portion 45 is formed by welding white metal or the like to the back metal portion 46.

  The back metal part 46 is made of, for example, copper, and is recessed from the back surface on one side in the axial center P direction joined to the support part 47 toward the other side in the axial center P direction, and the circumferential direction of the axial center P A flow path FC5 extending from the one end face to the other end face is formed.

  That is, the flow path FC5 is formed between the back metal part 46 and the support part 47, so that the front side and the rear side in the rotational direction of the bearing pad 42 communicate with each other so as to penetrate the inside of the bearing pad 42. It is formed as follows. In this embodiment, a plurality of the flow paths FC5 are provided at intervals in the radial direction.

  The support portion 47 is made of, for example, copper, and is coupled to the back metal portion 46 to support the back metal portion 46, and a pivot 48 (see FIG. 8) is provided on one side in the axis P direction. The pivot 48 comes into contact with the other side of the casing 43 in the axis P direction so that the support portion 47 can swing in the axis P direction.

  As shown in FIGS. 6 and 7, the oil supply portion 51 has a block shape, and is provided over the entire radial direction of the bearing pad 42 on the front side in the rotational direction of each bearing pad 42. The oil supply section 51 includes an oil introduction section 54 that introduces oil W for cooling the bearing pad 42 from the outside, and a first oil supply section 55 that is connected to the oil introduction flow path FC6 and directly supplies the oil W to the flow path FC5. And a second oil supply part 56 that is connected to the first oil supply part 55 and supplies the oil W to the surface layer part 45. In these parts, the oil introduction part 54, the first oil supply part 55, and the second oil supply part 56 constitute an oil supply part 51.

  The oil introduction portion 54 is a portion located on one side of the oil supply portion 51 in the axial center P direction. The oil introduction portion 54 opens toward one side in the axial center P direction and is open in the axial center P direction. An oil introduction channel FC6 extending toward the other side is formed. In this manner, the oil W for cooling the bearing pad 42 can be introduced from the outside.

  The first oil supply portion 55 is a portion located on the bearing pad 42 side in the oil supply portion 51. The first oil supply portion 55 communicates with the oil introduction flow path FC6 and also communicates with the flow path FC5 of the bearing pad 42. A hole 55a is formed. In this way, the first oil supply section 55 can directly supply the cooling oil W introduced from the outside of the bearing device 41 via the oil introduction flow path FC6 to the flow path FC5 of the bearing pad 42.

  The second oil supply portion 56 is a portion located on the other side in the axial center P direction of the oil supply portion 51, that is, on the surface layer portion 45 side. The second oil supply portion 56 opens on the other side in the axial center P direction. In addition, a chamber 56a is formed over the entire radial direction. In this way, the second oil supply unit 56 can directly supply the cooling oil W to the surface of the surface layer portion 45 of the bearing pad 42. Here, in the present embodiment, the hole portion 55a of the first oil supply portion 55 communicates with the chamber 56a of the second oil supply portion 56, that is, the hole portion 55a communicates with the oil introduction flow path FC6 via the chamber 56a. doing.

According to the bearing device 41 of the present embodiment, the first oil supply portion 55 and the second oil supply portion 56 can directly supply oil to the flow path FC5 of the bearing pad 42 and the surface of the surface layer portion 45. Therefore, it is possible to improve the cooling effect of the bearing pad 42 while reducing the amount of oil supply.
Furthermore, the operating loss of the entire bearing device 41 can be reduced by reducing the amount of oil supply, leading to improved performance.

  In the present embodiment, the first oil supply portion 55 and the second oil supply portion 56 are installed in each bearing pad 42 so that the oil W can flow through the two bearing pads 42. It may be provided only on the bearing pad 42, and the installation quantity is not limited.

Next, a bearing device 61 according to a fifth embodiment of the present invention will be described.
In addition, the same code | symbol is attached | subjected to the same component as 4th embodiment from 1st embodiment, and detailed description is abbreviate | omitted.
As shown in FIGS. 8 and 9, the bearing device 61 of the present embodiment is further provided with a connecting portion 62 based on the bearing device 41 of the fourth embodiment.

  The connecting portion 62 is installed in the entire radial direction of the bearing pad 42 so as to connect the two adjacent bearing pads 42 to form a block shape, and is formed in each of the bearing pads 42 inside thereof. A connection flow path FC7 is formed so that the flow paths FC5 communicate with each other. In the present embodiment, the connecting portion 62 is provided only between some adjacent bearing pads 42.

  Here, the second oil supply portion 66 is substantially the same member as the second oil supply portion 56 of the fourth embodiment, but the second oil supply portion 56 is provided so as to communicate the chamber 56a and the connection flow path FC7. A communication hole 66a that penetrates is further formed. In this embodiment, this connection flow path part 62 is not installed between all the adjacent two bearing pads 42, but only a part is installed.

  According to the bearing device 61 of the present embodiment, the oil W that has flowed and cooled through the flow path FC5 of one bearing pad 42 continues to the rear in the rotational direction via the connection flow path FC7, the communication hole 66a, and the chamber 56a. It can be supplied to the flow path FC5 of the bearing pad 42 adjacent to the side.

  For example, the connecting portion 62 may be installed between all two adjacent bearing pads 42, and in this case, it is possible to further reduce the amount of oil supply.

Although the embodiment of the present invention has been described in detail above, some design changes can be made without departing from the technical idea of the present invention.
For example, the first oil supply parts 15, 55 and the second oil supply parts 16, 56, 66 are not necessarily provided on the front side in the rotational direction of the bearing pads 2, 42, and are provided on the rear side in the rotational direction. May circulate oil W in the opposite direction. Further, the first oil supply portions 15, 55 and the second oil supply portions 16, 56, 66 are bearing pads 2, 42 provided on the front side in the rotational direction, and bearing pads 2, 42 provided on the rear side in the rotational direction. It may be mixed.

  Here, depending on the viscous pump unit 22 described in the second embodiment and the third embodiment, the oil W is introduced from the front side in the rotation direction, so that the oil W reaches the bearing pad 2 located on the rear side in the rotation direction. At that time, the temperature of the oil W is higher than the temperature at the time of supply from the outside. Therefore, for example, if the first oil supply part 15 and the second oil supply part 16 are provided on the rear side in the rotation direction in addition to the viscous pump part 22, the bearing pad 2 on the rear side in the rotation direction can be cooled first. The cooling effect can be further improved.

  Moreover, you may combine the above-mentioned embodiment suitably. For example, the first oil supply part 15 and the second oil supply part 16 of the first embodiment, the viscosity pump part 22 of the second embodiment, and the connection flow path part FC4 of the third embodiment may be provided side by side. This can further improve the cooling effect.

DESCRIPTION OF SYMBOLS 1 ... Bearing apparatus 2 ... Bearing pad 5 ... Surface layer part 6 ... Back metal part 7 ... Support part 8 ... Pivot 9 ... Bearing casing 12 ... Oil inlet part 13 ... Oil outlet part 15 ... First oil supply part 16 ... Second oil supply part FC1 ... Flow path FC2 ... Oil introduction flow path P ... Axis center W ... Oil 21 ... Bearing device 22 ... Viscosity pump part 25 ... Scraper part FC3 ... Viscosity pump flow path 23 ... Oil filler port 29 ... Bearing casing 31 ... Bearing device 32 ... Connection Part FC4 ... Connection flow path 41 ... Bearing device 42 ... Bearing pad 43 ... Casing 45 ... Surface layer part 46 ... Back metal part 47 ... Support part 48 ... Pivot 51 ... Oil supply part 54 ... Oil introduction part 55 ... First oil supply part 55a ... Hole Part 56 ... Second oil supply part 56a ... Chamber FC5 ... Flow path FC6 ... Oil introduction flow path 61 ... Bearing device 62 ... Connection part FC7 ... Connection flow path 100 ... Rotating shaft 20 ... rotating shaft 201 ... bearing apparatus 202A, 202B ... bearing pads 203 ... bearing casing 204 ... fuel supply port 205 ... groove 206 ... oil inlet 207 ... oil outlet FC ... flow path W1 ... oil

Claims (3)

A rotation axis;
Two bearing pads which are arranged at intervals in the circumferential direction of the rotating shaft and support the rotating shaft, and are formed with a flow path penetrating the inside from one side to the other side in the circumferential direction; ,
A connecting portion that is provided between the two bearing pads and communicates the flow paths of the two bearing pads;
One first oil supply that supplies oil through an opening that opens toward the one side to the flow path of only the bearing pad on the front side in the rotational direction of the rotating shaft of the two bearing pads. And
Oil corresponding to each of the bearing pads is provided through an opening that opens toward the one side with respect to the space between the bearing pad and the rotating shaft of the two bearing pads. And a total of two second oil supply sections.   The bearing device according to claim 1, further comprising a viscous pump unit that supplies the oil by a viscous pump action.   A rotating machine comprising the bearing device according to claim 1.

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