A radial tilting pad sliding bearing

Abstract

The application discloses a radial tilting-pad sliding bearing, and belongs to the technical field of bearings, and has the technical scheme as follows: a bearing seat is provided with an oil inlet hole; a guide pad is arranged on the inner side surface of the bearing seat, and one side of the guide pad is provided with a plurality of uniformly arranged hot oil outlets; the oil inlet hole corresponds to the gap position between two adjacent guide pads; the circumferential outer side surface of the guide pad is provided with a first guide surface which is connected with the hot oil outlet in correspondence. The application can guarantee the cooling of the guide pad and the practical service life of the bearing.

Description

Technical Field

[0001] This application belongs to the field of bearing technology, and in particular relates to a radial tilting pad sliding bearing. Background Technology

[0002] Radial tilting pad bearings are high-performance hydrodynamic sliding bearings. Their core feature consists of multiple independent pads that can swing around a fulcrum, forming a stable oil film through dynamic adjustment. They possess high load-bearing capacity and vibration resistance, suppressing oil film oscillation and adapting to shaft bending and misalignment conditions. They are mainly used in steam turbines, centrifugal compressors, aero engines, high-speed gearboxes, high-speed motors, and fans.

[0003] The ideal lubrication method for radial tilting pad bearings is as follows: after oil enters the bearing and completes the lubrication of the upstream guide pad, the hot lubricating oil leaking from the oil outlet of the upstream guide pad mixes thoroughly with the newly entered cold oil before entering the downstream guide pad. Currently, as the main equipment gradually increases its speed and the bearing size gradually decreases, the lubricating oil cannot be fully mixed in the gap between the upstream and downstream guide pads. This results in hot oil directly entering the downstream guide pad, causing excessive temperature rise in the pad, leading to bearing burnout, reduced bearing reliability, and shortened bearing life. Therefore, machine modifications are needed to address this issue. Utility Model Content

[0004] The purpose of this application is to address the aforementioned technical problems by providing a radially tilting pad sliding bearing that can ensure cooling of the guide pads and guarantee the service life of the bearing.

[0005] This application provides a radially tilting pad sliding bearing, comprising: The bearing housing is equipped with an oil inlet hole; The guide pad is placed on the inner side of the bearing housing, and a number of evenly arranged hot oil outlets are provided on one side of the guide pad; The oil inlet hole corresponds to the gap between two adjacent guide vanes, and the outer circumferential side of the guide vane is provided with a first guide surface, which is connected to the hot oil outlet.

[0006] The guide pads are installed inside the bearing housing. During bearing use, lubricating oil flows within the bearing housing. Cold oil enters through the oil inlet and flows, with some flowing along the circumferential direction of the bearing at the gap between adjacent guide pads, and another part flowing along the inner circumferential side of the guide pad. A small portion of the lubricating oil is discharged along the circumferential and axial directions of the inner circumferential side of the guide pad, while most of the lubricating oil is discharged through the hot oil outlet within the inner circumferential side of the guide pad. The first guide surface enhances the guiding effect on the lubricating oil, mixing the hot oil with the cold oil input through the next corresponding oil inlet. The mixed hot and cold oil then flows to the next guide pad, providing a function to reduce the temperature rise of the pads and ensure the service life of the bearing. The hot oil outlets are distributed on one edge near the inner circumferential side of the guide pad and downstream of the lubricating oil flow, and the hot oil outlets are evenly arranged.

[0007] Furthermore, the guide tile includes: The collection tank is located near the edge of the inner circumferential side of the guide plate and is connected to all hot oil outlets.

[0008] Furthermore, the guide tile also includes: The second guide surface is located on the circumferential outer side of the guide tile.

[0009] Furthermore, it also includes: The bearing cap is connected to the bearing housing by screws.

[0010] Furthermore, it also includes: The locating pin is placed between the bearing cap and the guide bearing.

[0011] Furthermore, the bearing cover includes: Oil outlet holes are located on the bearing cap.

[0012] Furthermore, the bearing cover also includes: The inner annular groove is located on the circumferential inner side of the bearing cover, and the inner annular groove is connected to the oil outlet hole.

[0013] Furthermore, the bearing housing includes: The outer ring groove is located on the circumferential outer side of the bearing housing and is connected to the oil inlet hole.

[0014] The beneficial effects of this application are: 1. The oil inlet is located between two guide pads. The hot lubricating oil that is easily discharged through the hot oil outlet mixes with the cold lubricating oil that is input through the oil inlet and then flows to the next guide pad, thus reducing the temperature rise of the pad.

[0015] 2. The first guide surface enhances the guiding effect on the lubricating oil, while the second guide surface improves the turbulence of hot and cold lubricating oils, thus enhancing the mixing effect of the lubricating oil.

[0016] 3. The collection groove improves the collection of lubricating oil on the circumferential inner side of the guide bearing, allowing more hot lubricating oil to flow to the axial outer side of the guide bearing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sliding bearing of this application; Figure 2 This is a front sectional view of the sliding bearing of this application; Figure 3 This is a side sectional view of the sliding bearing of this application; Figure 4 This is a schematic diagram of the structure of the guide tile in this application; In the attached diagram, the following labels are used: 100, bearing housing; 110, oil inlet; 120, outer ring groove; 200, guide bearing; 210, hot oil outlet; 220, first guide surface; 230, collection groove; 240, second guide surface; 300, bearing cover; 310, oil outlet; 320, inner ring groove; 400, locating pin. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0021] Example 1: like Figures 1-4 As shown, this application embodiment provides a radially tilting pad sliding bearing, comprising: The bearing housing 100 is provided with an oil inlet hole 110; The guide plate 200 is placed on the inner side of the bearing seat 100, and a number of evenly arranged hot oil outlets 210 are provided on one side of the guide plate 200. The oil inlet 110 corresponds to the gap between two adjacent guide vanes 200. The outer circumferential side of the guide vane 200 is provided with a first guide surface 220, which is connected to the hot oil outlet 210.

[0022] The guide pad 200 is installed inside the bearing housing 100. During bearing use, lubricating oil flows inside the bearing housing 100. Cold oil enters through the oil inlet 110 and flows. Part of it flows along the circumferential direction of the bearing at the gap between adjacent guide pads 200, and another part flows along the circumferential inner side of the guide pad 200. A small portion of lubricating oil is discharged along the circumferential and axial directions of the guide pad 200 on the circumferential inner side of the guide pad 200. Most of the lubricating oil is discharged through the hot oil outlet 210 on the circumferential inner side of the guide pad 200. The first guide surface 220 improves the guiding effect on the lubricating oil, mixing the hot oil with the cold oil input from the next corresponding oil inlet 110. The mixed hot oil and cold oil then flow to the next guide pad 200, providing the function of reducing the temperature rise of the pad and ensuring the service life of the bearing. The hot oil outlet 210 is distributed on one edge near the circumferential inner side of the guide pad 200 and downstream of the lubricating oil flow. The hot oil outlet 210 is evenly arranged.

[0023] Furthermore, the guide tile 200 includes: The collection tank 230 is located near the edge of the inner circumferential side of the guide tile 200 and is connected to all the hot oil outlets 210.

[0024] The collection tank 230 is located on the circumferential inner side of the guide plate 200 and is connected to all the hot oil outlets 210. The collection tank 230 improves the collection of lubricating oil in the circumferential inner side of the guide plate 200, so that it flows to the axial outer side of the guide plate 200, which further facilitates the mixing of hot and cold lubricating oil.

[0025] Furthermore, the guide tile 200 also includes: The second guide surface 240 is located on the circumferential outer side of the guide tile 200.

[0026] The second guide surface 240 is placed on the circumferential outer side of the guide pad 200. The first guide surface 220 and the second guide surface 240 of two adjacent guide pads 200 are respectively placed on both sides of the oil inlet. The second guide surface 240 can improve the turbulence of the two types of lubricating oil, and improve the mixing effect of the lubricating oil.

[0027] Example 2: like Figure 1 , Figure 3As shown, this application embodiment provides a radially tilting pad sliding bearing, which, in addition to the above-mentioned technical features, further includes: The bearing cap 300 is connected to the bearing housing 100 by screws.

[0028] The bearing cap 300 is installed on both sides of the bearing housing 100 along the axial direction by screws. The bearing cap 300 and the bearing housing 100 are connected by screws. The bearing cap 300 improves the stability of the lubricating oil in the gap between adjacent guide pads 200.

[0029] Furthermore, it also includes: The locating pin 400 is placed between the bearing cover 300 and the guide plate 200.

[0030] The locating pin 400 is connected between the bearing cover 300 and the guide pad 200. The locating pin 400 facilitates the installation and positioning of the guide pad 200, and the locating pin 400 and the cooperation between the guide pad 200 and the bearing seat 100 and the bearing cover 300 improve the stability of the guide pad 200 installed on the bearing.

[0031] Furthermore, the bearing cover 300 includes: Oil outlet holes 310 are distributed on bearing cap 300.

[0032] The oil supply hole is located on the bearing cover 300. The hot oil inside the bearing is easily transported to the outside of the bearing through the oil outlet 310, so that the lubricating oil can be cooled outside the bearing and continue to circulate.

[0033] Furthermore, the bearing cover 300 also includes: The inner ring groove 320 is located on the circumferential inner side of the bearing cover 300, and the inner ring groove 320 is connected to the oil outlet 310.

[0034] The inner ring groove 320 is connected to the oil outlet 310. When the bearing is in use, the lubricating oil inside the bearing flows out of the bearing. It is first collected through the inner ring groove 320 and then discharged through the oil outlet 310. The axis of the inner ring groove 320 is the same as the axis of the bearing cover 300.

[0035] Example 3: like Figures 1-3 As shown, this application embodiment provides a radially tilting pad sliding bearing, which, in addition to including the above-mentioned technical features, further includes: the bearing housing 100 comprising: The outer ring groove 120 is located on the circumferential outer side of the bearing housing 100 and is connected to the oil inlet hole 110.

[0036] The outer ring groove 120 is connected to the oil inlet hole 110. The bearing housing 100 is installed on other housing parts. The outer ring groove 120 facilitates the installation and connection of the oil inlet hole 110 with other parts such as conveying pipes, thereby improving the stability of the installation structure.

[0037] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0038] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A radially tilting pad sliding bearing, characterized in that, include: The bearing housing (100) is provided with an oil inlet (110); The guide plate (200) is placed on the inner side of the bearing seat (100), and a number of uniformly arranged hot oil outlets (210) are provided on one side of the guide plate (200). The oil inlet (110) corresponds to the gap between two adjacent guide vanes (200), and the outer circumferential side of the guide vane (200) is provided with a first guide surface (220), which is connected to the hot oil outlet (210).

2. The radially tilting pad sliding bearing according to claim 1, characterized in that, The guide tile (200) includes: The collection tank (230) is located close to the edge of the inner circumferential side of the guide tile (200) and connected to all the hot oil outlets (210).

3. The radially tilting pad sliding bearing according to claim 1, characterized in that, The guide tile (200) also includes: The second guide surface (240) is placed on the circumferential outer side of the guide tile (200).

4. The radially tilting pad sliding bearing according to claim 1, characterized in that, Also includes: The bearing cap (300) is connected to the bearing housing (100) by screws.

5. The radially tilting pad sliding bearing according to claim 4, characterized in that, Also includes: The locating pin (400) is placed between the bearing cap (300) and the guide plate (200).

6. The radially tilting pad sliding bearing according to claim 4, characterized in that, The bearing cap (300) includes: Oil outlet holes (310) are distributed on the bearing cap (300).

7. The radially tilting pad sliding bearing according to claim 6, characterized in that, The bearing cap (300) also includes: The inner ring groove (320) is located on the circumferential inner side of the bearing cover (300), and the inner ring groove (320) is connected to the oil outlet hole (310).

8. The radially tilting pad sliding bearing according to claim 1, characterized in that, The bearing housing (100) includes: The outer ring groove (120) is located on the circumferential outer side of the bearing housing (100) and is connected to the oil inlet hole (110).

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