CN115451027A

CN115451027A - Vertical sliding bearing system

Info

Publication number: CN115451027A
Application number: CN202211128763.5A
Authority: CN
Inventors: 冯毅; 张翀; 杜灿阳; 刘小军; 罗碧; 朱杰; 佘柯; 宋清平
Original assignee: Shanghai Electric Group Shanghai Electric Machine Works Co ltd; Hunan Chongde Technology Co ltd; GDH Pearl River Water Supply Co Ltd
Current assignee: Shanghai Electric Group Shanghai Electric Machine Works Co ltd; Hunan Chongde Technology Co ltd; GDH Pearl River Water Supply Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-12-09
Anticipated expiration: 2042-09-16
Also published as: CN115451027B

Abstract

The invention provides a vertical sliding bearing system, which comprises a bearing oil tank, a thrust head, a radial bearing, an axial bearing and a circulating cooling channel, wherein the head end of the thrust head is rotatably arranged in the bearing oil tank and is supported by the radial bearing and the axial bearing; the radial bearing divides the bearing oil tank into an upper chamber and a lower chamber; the circulating cooling channel comprises an oil pumping section, a lubricating oil cooling section, a radial bearing oil passing section, an oil returning section and an axial bearing oil passing section which are sequentially communicated, the radial bearing oil passing section is arranged in the upper cavity, and the rest sections are arranged in the lower cavity; the oil pumping section is arranged on the thrust head, and the oil return section is positioned on the outer side of the lubricating oil cooling section. The invention has the advantages of high heat exchange efficiency, good heat dissipation effect and the like.

Description

Vertical sliding bearing system

Technical Field

The invention relates to the field of sliding bearings, in particular to a vertical sliding bearing system.

Background

At present, a bearing oil chamber of a vertical sliding bearing is filled with oil required by bearing lubrication in the using process, and power consumption heat generated in the operating process of the vertical sliding bearing is taken away through heat exchange of a cooler, so that the vertical sliding bearing can normally operate. However, the layout of a bearing oil way of the conventional vertical sliding bearing is disordered and undefined, so that the initial power of the bearing for pumping lubricating oil is insufficient under the condition of long-term low rotating speed, the lubricating oil of the bearing cannot completely flow through a cooler for sufficient heat exchange, and the cooling effect of the bearing is poor; under the condition of long-term high rotating speed, the stirring loss of bearing lubricating oil is large, hot oil cannot completely flow through the oil-water cooler, the problems of low bearing heat exchange efficiency, high bearing temperature and the like exist, the bearing lubricating oil is particularly remarkable under the working condition of a wide rotating speed range (the lowest long-term running rotating speed is less than 1/2 of the highest long-term running rotating speed), and the requirement of long-term variable-rotating-speed running of host equipment cannot be met. Meanwhile, the existing bearing structure drives lubricating oil in a bearing oil tank to synchronously stir when a thrust disc stirs, at the moment, bubble oil mist is easily generated, the generated oil mist increases the risks of oil gas leakage and environmental pollution, and the requirement on the sealing of the bearing is high.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a vertical sliding bearing system with high heat exchange efficiency and good heat dissipation effect.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a vertical sliding bearing system comprises a bearing oil tank, a thrust head, a radial bearing, an axial bearing and a circulating cooling channel, wherein the head end of the thrust head is rotatably arranged in the bearing oil tank and is supported by the radial bearing and the axial bearing; the radial bearing divides the bearing oil tank into an upper chamber and a lower chamber; the circulating cooling channel comprises an oil pumping section, a lubricating oil cooling section, a radial bearing oil passing section, an oil returning section and an axial bearing oil passing section which are sequentially communicated, the radial bearing oil passing section is arranged in the upper cavity, and the rest sections are arranged in the lower cavity; the oil pumping section is arranged on the thrust head, and the oil return section is positioned on the outer side of the lubricating oil cooling section.

As a further improvement of the above technical solution:

the radial bearing comprises an annular bearing body, a plurality of arc-shaped tilting pads and a plurality of bearing cover plates, wherein the arc-shaped tilting pads are circumferentially arranged along the inner side of the annular bearing body; the radial bearing oil passing section comprises an oil passing space arranged between adjacent arc-shaped tilting pads, an oil passing gap arranged between the bearing cover plate and the arc-shaped tilting pads, and a bearing body oil passing groove arranged between the adjacent cover plate mounting platforms, wherein the oil passing space, the oil passing gap and the bearing body oil passing groove are sequentially communicated.

The radial bearing also comprises a bearing seat fixed outside the annular bearing body, and the outer edge of the bearing seat is connected with a fixed rack outside the bearing oil tank through an annular connecting plate; the bearing seat and the annular connecting plate divide the bearing oil tank into the upper cavity and the lower cavity.

The lubricating oil cooling section is communicated with the radial bearing oil passing section through a drainage channel; the drainage channel comprises an upper annular plate and a lower annular plate which are oppositely arranged, the inner edge of the lower annular plate is hermetically arranged on the outer surface of the thrust head, and an overflowing gap is reserved between the inner edge of the upper annular plate and the thrust head; the outer edges of the upper annular plate and the lower annular plate are located above the lubricating oil cooling section.

The thrust collar comprises a thrust collar body and a mirror plate attached to the axial bearing, and the mirror plate is mounted at one end of the thrust collar body; the oil pumping section is an oil pumping channel for pumping lubricating oil to the lubricating oil cooling section when the thrust head body rotates, and the oil pumping channel horizontally penetrates through the mirror plate.

An oil collecting groove for collecting lubricating oil when the thrust head rotates is arranged on the inner side of the mirror plate and is communicated with the oil pumping channel; and a sealing component for preventing lubricating oil from leaking out from the space between the thrust collar body and the oil blocking cylinder is arranged above the oil collecting groove.

The backflow section comprises a plurality of L-shaped backflow grooves which are arranged along the circumferential direction of the bearing oil tank, and the L-shaped backflow grooves are formed in the inner side wall and the bottom surface of the lower cavity.

The axial bearing comprises a supporting bearing plate and a plurality of blocky tilting pads attached to a thrust head, and the blocky tilting pads are arranged on the supporting bearing plate in a swinging mode; the axial bearing oil passing section comprises a plurality of bearing plate passing holes and a vertical flow guide channel, the plurality of bearing plate passing holes are arranged along the circumferential direction of the supporting bearing plate in a penetrating mode, two ends of each bearing plate passing hole are communicated with the backflow section and the vertical flow guide channel respectively, and the vertical flow guide channel is communicated with the pump oil section.

The inner side of the thrust head is provided with an oil blocking cylinder, the inner side of the supporting bearing plate is provided with a vertical guide plate, and the vertical guide channel is formed by enclosing the vertical guide plate and the oil blocking cylinder.

The lubricating oil cooling section is provided with a coil type heat exchanger; the coil pipe type heat exchanger is sleeved outside the thrust head and is arranged opposite to an oil outlet of the oil pumping section.

Compared with the prior art, the invention has the advantages that:

the bearing oil tank is internally provided with a circulating cooling channel, the circulating cooling channel comprises an oil pumping section, a lubricating oil cooling section, a radial bearing oil passing section, an oil returning section and an axial bearing oil passing section which are sequentially communicated, the radial bearing oil passing section is arranged in an upper cavity, and the rest sections are arranged in a lower cavity. The circulating cooling channel has compact and reasonable layout of all sections, a single and definite bearing cooling channel is formed in the bearing oil tank, the problem of disorder and unsharpness of the cooling channel is avoided, bearing lubricating oil can flow through the lubricating oil cooling section, the radial bearing and the axial bearing to fully exchange heat when running at high and low rotating speeds for a long time, power consumption heat generated in the running process of the radial bearing and the axial bearing can be taken away through the lubricating oil, the heat exchange efficiency is high, the heat dissipation effect is good, and the circulating cooling channel is suitable for application of a motor in a wide rotating speed range.

The oil pumping section is arranged on the thrust head, and lubricating oil is automatically pumped to the lubricating oil cooling section due to the internal and external pressure difference of the thrust head when the thrust head rotates so as to form the circulating power of the circulating cooling channel; the oil return section is located on the outer side of the lubricating oil cooling section and used for enabling lubricating oil of the radial bearing oil passing section to flow back to the axial bearing oil passing section, an oil return line is long, and the oil return section is close to the inner wall of a bearing oil tank, so that the heat dissipation area is large, the sufficient heat dissipation of the lubricating oil is guaranteed, and the heat dissipation effect is further improved.

The bearing oil tank is divided into the upper chamber and the lower chamber by the radial bearing, and the thrust head cannot drive all lubricating oil in the tank to synchronously rotate when rotating due to the divided arrangement of the bearing oil tank, so that a large amount of bubble oil mist generated by the rotation of the lubricating oil is avoided, the oil mist leakage probability and the environmental pollution risk are greatly reduced, the sealing requirement of the bearing can be met through conventional sealing, and the sealing effect is ensured.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the drawings. Wherein:

fig. 1 is a schematic perspective view of a vertical plain bearing system of the present invention.

Fig. 2 is a front sectional view of fig. 1.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Fig. 4 is a perspective view of the radial bearing of the present invention.

Fig. 5 is a sectional view of fig. 4.

FIG. 6 is a schematic diagram showing the positional relationship between the bearing oil tank and the fixed frame according to the present invention.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a front sectional view of fig. 6.

Figure 9 is a front cross-sectional view of the thrust collar of the present invention.

FIG. 10 is a cross-sectional view of a mirror plate of the present invention.

The reference numerals in the figures denote:

1. a bearing oil tank; 11. an upper chamber; 12. a lower chamber; 2. a thrust collar; 21. a thrust collar body; 22. a mirror plate; 221. an oil sump; 3. a radial bearing; 31. an annular bearing body; 311. a cover plate mounting table; 32. an arc-shaped tiltable tile; 33. a bearing cover plate; 34. a bearing seat; 35. an annular connecting plate; 351. an oil passing hole; 4. an axial bearing; 41. a support deck; 42. a block-shaped tiltable tile; 5. a circulating cooling channel; 51. an oil pumping section; 511. an oil pumping channel; 52. a lubricating oil cooling section; 521. a coil heat exchanger; 53. a radial bearing oil passing section; 531. an oil passing space; 532. oil passing gaps; 533. the bearing body passes through the oil groove; 54. an oil return section; 541. an L-shaped reflux tank; 55. an axial bearing oil passing section; 551. a bearing plate overflowing hole; 552. a vertical flow guide channel; 553. a vertical deflector; 56. a drainage channel; 561. an upper annular plate; 562. a lower annular plate; 6. fixing the frame; 61. supporting legs; 62. connecting a base; 7. a sealing member; 8. an oil blocking cylinder; 9. a rotating shaft.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples, without thereby limiting the scope of the invention.

Fig. 1 to 3 show an embodiment of a vertical sliding bearing system of the present invention, which can be applied to a vertical motor to achieve efficient support of a rotor of the motor. The vertical sliding bearing system comprises a bearing oil tank 1, a thrust collar 2, a radial bearing 3, an axial bearing 4 and a circulating cooling channel 5. Lubricating oil is pre-arranged in the bearing oil tank 1, and the oil level line of the lubricating oil is positioned at the radial bearing 3 so as to reduce the risk of oil leakage and reduce the cost; the thrust collar 2 is fixedly connected with the rotating shaft 9, and the head end of the thrust collar 2 is rotatably arranged in the bearing oil tank 1 under the action of the rotating shaft 9; the radial bearing 3 is sleeved outside the thrust collar 2, the axial bearing 4 is arranged at the head end of the thrust collar 2, and the thrust collar 2 is supported by the radial bearing 3 and the axial bearing 4 to bear the radial load and the axial load of the rotating shaft 9.

In this embodiment, the radial bearing 3 divides the bearing oil tank 1 into an upper chamber 11 and a lower chamber 12. The circulating cooling channel 5 comprises an oil pumping section 51, a lubricating oil cooling section 52, a radial bearing oil passing section 53, an oil return section 54 and an axial bearing oil passing section 55 which are communicated in sequence. The radial bearing oil passing section 53 is arranged in the upper chamber 11, and the rest sections are arranged in the lower chamber 12. The oil pumping section 51 is arranged on the thrust collar 2, and lubricating oil is automatically pumped to the lubricating oil cooling section 52 due to the internal and external pressure difference of the thrust collar 2 when the thrust collar 2 rotates so as to form the circulating power of the circulating cooling channel 5; the lubricating oil cooling section 52 is used for cooling the lubricating oil pumped by the oil pumping section 51; the radial bearing oil passing section 53 is arranged at the position of the radial bearing 3 and is used for cooling the radial bearing 3; the oil return section 54 is positioned at the outer side of the lubricating oil cooling section 52 and is used for returning the lubricating oil of the radial bearing oil passing section 53 to the axial bearing oil passing section 55, the oil return line is long, and the oil return section 54 is close to the inner wall of the bearing oil tank 1, so that the heat dissipation area is large, and the sufficient heat dissipation of the lubricating oil is ensured; the axial bearing oil passing section 55 is arranged at the position of the axial bearing 4 and is used for cooling the axial bearing 4.

The circulating cooling channel 5 has compact and reasonable layout of each section, a single and definite bearing cooling channel is formed in the bearing oil tank 1, the problem of disorder and unclear cooling channels is avoided, bearing lubricating oil can flow through the lubricating oil cooling section 52, the radial bearing 3 and the axial bearing 4 to perform sufficient heat exchange when running at high and low rotating speeds for a long time, power consumption heat generated in the running process of the radial bearing 3 and the axial bearing 4 can be taken away through the lubricating oil, the heat exchange efficiency is high, the heat dissipation effect is good, and the circulating cooling channel is suitable for application of a motor in a wide rotating speed range.

Meanwhile, the bearing oil tank 1 is divided into the upper cavity 11 and the lower cavity 12 by the radial bearing 3, and the thrust head 2 cannot drive all lubricating oil in the tank to synchronously rotate in the manner of dividing the bearing oil tank 1, so that a large amount of bubble oil mist generated by the rotation of the lubricating oil is avoided, the oil mist leakage probability and the environmental pollution risk are greatly reduced, the sealing requirement of the bearing can be met through conventional sealing, and the sealing effect is ensured.

As shown in fig. 4 and 5, the radial bearing 3 includes an annular bearing body 31, a plurality of arc-shaped tilting pads 32, and a plurality of bearing cover plates 33. Wherein, a plurality of arc-shaped tilting pads 32 are arranged on the inner circumference of the annular bearing body 31 in a swinging way, and the inner side of each arc-shaped tilting pad 32 is attached to the outer surface of the thrust head 2 so as to bear the radial load of the rotating shaft 9. In this embodiment, a cover mounting table 311 is provided on the upper surface of the annular bearing body 31 at a position opposed to the bearing cover 33. The bearing cover plate 33 is installed on the cover plate installation table 311, and the bearing cover plate 33 is covered on the gap between the adjacent arc-shaped tilting pads 32; meanwhile, the cover plate mounting table 311 is higher than the arc-shaped tilting pad 32, which leaves an oil gap 532 between the bearing cover plate 33 and the arc-shaped tilting pad 32 to facilitate the effective passage of lubricating oil while lubricating and cooling the radial bearing 3.

Meanwhile, the radial bearing oil passing section 53 comprises an oil passing space 531, an oil passing gap 532 and a bearing body oil passing groove 533 which are sequentially communicated. Wherein, the oil passing space 531 is arranged between adjacent arc-shaped tilting pads 32, and the oil passing space 531 is communicated with the lubricating oil cooling section 52; the oil passing gap 532 is arranged between the bearing cover plate 33 and the arc-shaped tilting pad 32; the bearing body oil-through groove 533 is provided between adjacent cover plate mounting platforms 311. According to the invention, through the improvement of the internal structure of the radial bearing 3, lubricating oil can fully and effectively pass through the inside of the radial bearing 3 and be discharged, so that the radial bearing 3 has high heat exchange efficiency and good heat dissipation effect; meanwhile, the radial bearing 3 is compact in layout, does not occupy redundant space, and can fully dissipate heat in the original space of the radial bearing 3.

Further, the radial bearing 3 also comprises a bearing seat 34. The bearing housing 34 is fixed outside the annular bearing body 31 to effectively support the arc-shaped tilting pad 32. The outer edge of the bearing seat 34 is connected with the fixed frame 6 outside the bearing oil tank 1 through an annular connecting plate 35, and the axial load of the rotating shaft 9 is transmitted to the fixed frame 6 through the thrust collar 2, the arc-shaped tilting pad 32, the annular bearing body 31 and the bearing seat 34 in sequence, so that the bearing support of the axial load of the rotating shaft 9 is realized.

As shown in fig. 1, 6 and 7, the fixed frame 6 includes four sets of support legs 61 and a connection base 62. Four sets of support legs 61 are connected to the outer periphery of the annular connecting plate 35, and the four sets of support legs 61 are connected to each other by a connecting base 62 to form an integral frame. In other embodiments, the number of the support legs 61 can be adjusted according to actual situations, such as three groups, five groups, etc.

As shown in fig. 2 and 3, the bearing housing 34 and the annular connecting plate 35 divide the bearing oil tank 1 into an upper chamber 11 and a lower chamber 12. Meanwhile, the annular connection plate 35 is provided with an oil passing hole 351 to communicate the upper chamber 11 with the oil return section 54. The arrangement of the annular connecting plate 35 facilitates the arrangement of the oil inlet port of the oil return section 54 while transferring radial loads.

In this embodiment, the oil cooling section 52 is in communication with the radial bearing oil passing section 53 through a drainage channel 56. As shown in fig. 3 and 5, the flow guiding channel 56 includes an upper annular plate 561 and a lower annular plate 562 which are arranged oppositely, outer edges of the upper annular plate 561 and the lower annular plate 562 are located above the lubricating oil cooling section 52, an inner edge of the lower annular plate 562 is mounted on an outer surface of the thrust collar 2 in a sealing manner, and a flow passing gap is left between the inner edge of the upper annular plate 561 and the thrust collar 2, so as to ensure that the lubricating oil of the lubricating oil cooling section 52 flows into the radial bearing oil passing section 53 and performs lubricating and cooling on the radial bearing 3.

As shown in fig. 9, the thrust collar 2 includes a thrust collar body 21 and a mirror plate 22. The mirror plate 22 is mounted at one end of the thrust collar body 21, and the mirror plate 22 is attached to the axial bearing 4. In this embodiment, the oil pumping section 51 is an oil pumping channel 511, the oil pumping channel 511 is horizontally disposed on the mirror plate 22, and the lubricant oil is pumped to the lubricant oil cooling section 52 through the oil pumping channel 511 due to the internal and external pressure difference of the thrust head 2 when the thrust head 2 rotates, so as to form the circulating power of the circulating cooling channel 5.

Further, as shown in fig. 10, an oil collecting groove 221 is provided on the inner side of the mirror plate 22, and the oil collecting groove 221 communicates with the oil pumping channel 511 to effectively collect the lubricating oil when the thrust collar 2 rotates, thereby ensuring the circulating power of the circulating cooling channel 5. As shown in fig. 3, a sealing member 7 is disposed above the oil collecting tank 221, the sealing member 7 is sealed by centrifugal force during rotation of the thrust collar 2, and is suitable for long-term operation at high and low rotation speeds, so that sufficient pumping power for pumping the lubricating oil to the lubricating oil cooling section 52 through the oil pumping channel 511 is ensured, and the lubricating oil is prevented from leaking to the rotating shaft 9 from between the thrust collar body 21 and the oil baffle cylinder 8.

As shown in fig. 6 to 8, the oil return section 54 includes a plurality of L-shaped return grooves 541. The plurality of L-shaped backflow grooves 541 are uniformly arranged along the circumferential direction of the bearing oil tank 1, the L-shaped backflow grooves 541 are arranged on the inner side wall and the bottom surface of the lower chamber 12, and lubricating oil returns to the axial bearing oil passing section 55 through gravity. When the lubricating oil is introduced into the L-shaped backflow groove 541, since the oil return line of the L-shaped backflow groove 541 is long and the heat dissipation area is large, the heat of the lubricating oil is sufficiently taken away by the contact between the outer wall of the bearing oil tank 1 and the lubricating oil, and the effective heat dissipation of the lubricating oil is ensured. In this embodiment, the number of the L-shaped reflow grooves 541 is eight; in other embodiments, the number of the L-shaped reflow grooves 541 can be adjusted according to the actual heat dissipation requirement.

As shown in fig. 3 and 8, the axial bearing 4 includes a support carrier plate 41 and a plurality of block-shaped tilting pads 42. The block-shaped tilting pads 42 are attached to the mirror plates 22, and a plurality of the block-shaped tilting pads 42 are swingably mounted on the support carrier plate 41. The axial bearing oil passing section 55 includes a plurality of carrier plate flow holes 551 and vertical guide channels 552, the plurality of carrier plate flow holes 551 are arranged to penetrate in the circumferential direction of the support carrier plate 41, and the number of the carrier plate flow holes 551 is the same as the number of the L-shaped return grooves 541. Two ends of each bearing plate overflowing hole 551 are respectively communicated with the L-shaped backflow groove 541 and the vertical flow guide channel 552, and the vertical flow guide channel 552 is communicated with the oil pumping section 51, so that the axial bearing 4 is effectively cooled and overflowed, the structure is simple and compact, and no extra space is occupied.

In the embodiment, the inner side of the thrust collar 2 is provided with the oil blocking cylinder 8, and oil is blocked between the rotating shaft 9 and the thrust collar 2 through the oil blocking cylinder 8 so as to prevent lubricating oil from leaking; a vertical deflector 553 is mounted to the inside of the support deck 41. The vertical guide channel 552 is formed by enclosing a vertical guide plate 553 and an oil baffle cylinder 8, and has a simple and compact structure.

As shown in fig. 2 and 3, the lubricating oil cooling section 52 is provided with a coil heat exchanger 521. The coiled heat exchanger 521 is sleeved outside the thrust collar 2, and the coiled heat exchanger 521 is arranged opposite to the oil outlet of the oil pumping section 51. When the lubricating oil is introduced into the coil heat exchanger 521, the cooling water in the coil heat exchanger 521 brings away the heat of the oil through the contact with the lubricating oil, so that the purpose of cooling the lubricating oil is achieved.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A vertical sliding bearing system is characterized by comprising a bearing oil tank, a thrust head, a radial bearing, an axial bearing and a circulating cooling channel, wherein the head end of the thrust head is rotatably arranged in the bearing oil tank and is supported by the radial bearing and the axial bearing; the radial bearing divides the bearing oil tank into an upper chamber and a lower chamber; the circulating cooling channel comprises an oil pumping section, a lubricating oil cooling section, a radial bearing oil passing section, an oil returning section and an axial bearing oil passing section which are sequentially communicated, the radial bearing oil passing section is arranged in the upper cavity, and the rest sections are arranged in the lower cavity; the oil pumping section is arranged on the thrust head, and the oil return section is positioned on the outer side of the lubricating oil cooling section.

2. The vertical sliding bearing system according to claim 1, wherein the radial bearing comprises an annular bearing body, a plurality of arc-shaped tilting pads circumferentially arranged along the inner side of the annular bearing body, and a plurality of bearing cover plates covering gaps between adjacent arc-shaped tilting pads, and the upper surface of the annular bearing body opposite to the bearing cover plates is provided with a cover plate mounting table higher than the arc-shaped tilting pads; the radial bearing crosses oily section including locating the oily space of crossing between the adjacent arc tilting pad, locating the oily clearance of crossing between bearing cover plate and the arc tilting pad to and locate the bearing body between the adjacent apron mount table and cross the oil groove, cross oily space, cross oily clearance and bearing body and cross the oil groove and communicate in proper order.

3. The vertical sliding bearing system according to claim 2, wherein the radial bearing further comprises a bearing seat fixed outside the annular bearing body, and the outer edge of the bearing seat is connected with a fixed frame outside the bearing oil tank through an annular connecting plate; the bearing seat and the annular connecting plate divide the bearing oil tank into the upper cavity and the lower cavity.

4. The vertical sliding bearing system according to any one of claims 1 to 3, wherein the lubricating oil cooling section communicates with the radial bearing oil passing section through a drainage passage; the drainage channel comprises an upper annular plate and a lower annular plate which are oppositely arranged, the inner edge of the lower annular plate is hermetically arranged on the outer surface of the thrust head, and a flow-passing gap is reserved between the inner edge of the upper annular plate and the thrust head; the outer edges of the upper annular plate and the lower annular plate are located above the lubricating oil cooling section.

5. The vertical plain bearing system according to any one of claims 1 to 3, wherein the thrust collar comprises a thrust collar body and a mirror plate attached to the axial bearing, the mirror plate being mounted at one end of the thrust collar body; the oil pumping section is an oil pumping channel for pumping lubricating oil to the lubricating oil cooling section when the thrust head body rotates, and the oil pumping channel horizontally penetrates through the mirror plate.

6. The vertical sliding bearing system according to claim 5, wherein an oil sump for collecting lubricating oil when the thrust block rotates is provided on the inner side of the mirror plate, and the oil sump is communicated with the oil pumping channel; and a sealing part for preventing lubricating oil from leaking out from the space between the thrust collar body and the oil blocking cylinder is arranged above the oil collecting groove.

7. The vertical sliding bearing system according to any one of claims 1 to 4, wherein the backflow segment comprises a plurality of L-shaped backflow grooves arranged along the circumferential direction of the bearing oil tank, and the L-shaped backflow grooves are formed in the inner side wall and the bottom surface of the lower chamber.

8. The vertical plain bearing system according to any one of claims 1 to 4 wherein the axial bearing comprises a support carrier plate and a plurality of block-shaped tiltable tiles attached to a thrust head, the plurality of block-shaped tiltable tiles being swingably mounted on the support carrier plate; the axial bearing oil passing section comprises a plurality of bearing plate passing holes and a vertical flow guide channel, the plurality of bearing plate passing holes are arranged along the circumferential direction of the supporting bearing plate in a penetrating mode, two ends of each bearing plate passing hole are communicated with the backflow section and the vertical flow guide channel respectively, and the vertical flow guide channel is communicated with the pump oil section.

9. The vertical sliding bearing system according to claim 8, wherein an oil blocking cylinder is arranged on the inner side of the thrust head, a vertical guide plate is mounted on the inner side of the support bearing plate, and the vertical guide channel is enclosed by the vertical guide plate and the oil blocking cylinder.

10. The vertical sliding bearing system according to any one of claims 1 to 4, wherein the lubricant cooling section is provided with a coil heat exchanger; the coil pipe type heat exchanger is sleeved outside the thrust head and is arranged opposite to an oil outlet of the oil pumping section.