Tile block structure, bearing and centrifugal compressor

Abstract

The embodiment of the utility model discloses a tile block structure, a bearing and a centrifugal compressor, the tile block structure comprises a tile block body, an oil inlet groove formed in the front edge of the tile block body, an oil discharge groove formed in the rear edge of the tile block body and a throttling hole communicated with the oil inlet groove, and when the tile block structure provided by the embodiment of the utility model is applied to the bearing, the oil discharge groove is formed in the front edge of the tile block body; lubricating oil with low temperature can enter the oil inlet groove through the throttling hole, then the lubricating oil directly forms an oil film on the pad body to play a lubricating role, and the lubricating oil with high temperature can be discharged through the oil discharge groove along with rotation of the bearing. According to the tile block structure provided by the embodiment of the invention, the oil inlet path and the oil outlet path are different, low-temperature lubricating oil and high-temperature lubricating oil do not interfere with each other, the lubricating effect can be better achieved, meanwhile, an oil film can be formed on the tile block body as soon as possible, the lubricating effect can be further improved, and then power consumption is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of centrifugal compressors, and in particular to a tile structure, a bearing and a centrifugal compressor. Background Art

[0002] With the continuous development of turbine machinery, high-parameter centrifugal compressors continue to emerge, and high-speed heavy-load centrifugal compressors are one of them. However, their large-scale application has brought some problems. A large number of engineering practices have shown that in high-speed and heavy-load units, the bearings are in a high-load and high-line speed working environment, which can easily lead to excessive bearing temperature, resulting in alarms or even chain shutdowns, greatly affecting the long-term safe and stable operation of the unit. At the same time, under high-speed and heavy-load conditions, traditional submerged bearings consume a lot of power. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a tile structure.

[0005] A second aspect of the utility model provides a bearing.

[0006] A third aspect of the utility model provides a centrifugal compressor.

[0007] In view of this, according to a first aspect of an embodiment of the present application, a tile structure is proposed, comprising:

[0008] Tile body;

[0009] An oil inlet groove, the oil inlet groove is arranged at the front edge of the tile body;

[0010] An oil drain groove, the oil drain groove is provided at the rear edge of the tile body;

[0011] A throttle hole is provided through the shoe body and is connected to the oil inlet groove.

[0012] In a feasible implementation manner, the number of the throttling holes is multiple; and / or

[0013] The oil inlet groove is arranged along the width direction of the shoe body; and / or

[0014] The oil drainage groove is arranged along the width direction of the shoe body.

[0015] In a feasible implementation manner, the tile structure further includes:

[0016] A plurality of hole plugs are provided, and the sizes of the plurality of hole plugs are different. The hole plugs are used to be arranged in the throttling hole.

[0017] In a feasible implementation manner, the tile body is made of a copper-chromium alloy material;

[0018] The surface of the shoe body facing the rotating shaft is coated with a babbitt metal coating.

[0019] According to a second aspect of an embodiment of the present application, a bearing is provided, comprising:

[0020] A tile structure as described in any of the above technical solutions;

[0021] A bearing body, the shoe structure is connected to the bearing body.

[0022] In a feasible implementation manner, the bearing further includes:

[0023] A fulcrum, wherein the shoe structure is connected to the bearing body via the fulcrum.

[0024] In a feasible implementation manner, the fulcrum is a biased branch structure, and the biased branch ratio of the biased branch structure is 0.5 to 0.6.

[0025] In a feasible implementation manner, the fulcrum is spherical.

[0026] In a feasible implementation manner, the bearing further includes:

[0027] An oil inlet device is provided on the bearing body, the oil inlet is connected to the oil inlet groove, and the oil inlet device is connected to the bearing body and connected to the oil inlet.

[0028] According to a third aspect of an embodiment of the present application, a centrifugal compressor is provided, further comprising:

[0029] A bearing as described in any of the above technical solutions;

[0030] A rotor assembly is connected to the bearing.

[0031] Compared with the prior art, the present invention has at least the following beneficial effects:

[0032] The tile structure provided in the embodiment of the present application includes a tile body, an oil inlet groove arranged at the front edge of the tile body, an oil outlet groove arranged at the rear edge of the tile body, and a throttle hole connected to the oil inlet groove. Based on this, when the tile structure provided in the embodiment of the present application is applied to a bearing, the lubricating oil with a lower temperature can enter the oil inlet groove through the throttle hole, and then the lubricating oil directly forms an oil film on the tile body to play a lubricating role. As the bearing rotates, the high-temperature lubricating oil can be discharged through the oil outlet groove, and then the discharged high-temperature lubricating oil is recovered, and the high-temperature lubricating oil can be used after cooling. Based on this, the tile structure provided in the embodiment of the present application, compared with the scheme of oil inlet and oil outlet between two adjacent tiles in the traditional technology, adopts the oil inlet through the front edge of the tile body and the oil outlet through the rear edge. The oil inlet and oil outlet paths are different, and the low-temperature lubricating oil and the high-temperature lubricating oil will not interfere with each other, which can better play a lubricating effect. At the same time, an oil film can be formed on the tile body as soon as possible, which can further improve the lubrication effect and reduce power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 A schematic structural diagram of a tile structure from a first angle according to an embodiment of the present application;

[0035] Figure 2 A schematic structural diagram of a tile structure from a second angle according to an embodiment of the present application;

[0036] Figure 3 A schematic structural diagram of a tile structure of an embodiment provided in the present application from a third angle;

[0037] Figure 4 A schematic structural diagram of a tile structure from a fourth angle according to an embodiment of the present application;

[0038] Figure 5 A schematic structural diagram of a tile structure of another embodiment provided in the present application;

[0039] Figure 6 A schematic structural diagram of a bearing according to an embodiment of the present application.

[0040] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0041] 110 tile body, 120 oil inlet groove, 130 oil outlet groove, 140 throttle hole;

[0042] 210 bearing body, 220 fulcrum. DETAILED DESCRIPTION

[0043] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0044] like Figures 1 to 5 As shown, according to the first aspect of the embodiment of the present application, a pad structure is proposed, including: a pad body 110; an oil inlet groove 120, the oil inlet groove 120 is opened at the front edge of the pad body 110; an oil drain groove 130, the oil drain groove 130 is opened at the rear edge of the pad body 110; and a throttle hole 140, the throttle hole 140 is set through the pad body 110 and leads to the oil inlet groove 120.

[0045] The pad structure provided in the embodiment of the present application includes a pad body 110, an oil inlet groove 120 arranged at the front edge of the pad body 110, an oil drain groove 130 arranged at the rear edge of the pad body 110, and a throttle hole 140 connected to the oil inlet groove 120. Based on this, when the pad structure provided in the embodiment of the present application is applied to the bearing, the lubricating oil with a lower temperature can enter the oil inlet groove 120 through the throttle hole 140, and then the lubricating oil directly forms an oil film on the pad body 110 to play a lubricating role. As the bearing rotates, the high-temperature lubricating oil can be discharged through the oil drain groove 130, and then the discharged higher-temperature lubricating oil can be recovered and used after the higher-temperature lubricating oil is cooled. Based on this, the tile structure provided by the embodiment of the present application is compared with the solution of oil inlet and oil discharge between two adjacent tiles in the traditional technology. The oil is fed in through the leading edge of the tile body 110 and discharged from the trailing edge. The oil inlet and outlet paths are different, and the low-temperature lubricating oil and the high-temperature lubricating oil will not interfere with each other, which is conducive to the rapid discharge of hot oil and avoids the hot oil flowing into the next tile structure and causing excessive heat to be transferred to the bearing, which is conducive to reducing the overall bearing temperature and can better play a lubrication effect. At the same time, it can form an oil film on the tile body 110 as soon as possible, which can further improve the lubrication effect and thus reduce power consumption.

[0046] It is understandable that the bearings in the conventional technology mostly carry out oil inlet and outlet between two adjacent pads. In this way, the oil inlet path overlaps with the oil outlet path, and the oil inlet and oil outlet will interfere with each other. The low-temperature lubricating oil will directly contact the high-temperature lubricating oil, thereby reducing the lubrication efficiency. However, the pad structure provided in the embodiment of the present application, through the setting of the oil inlet groove 120 and the oil drain groove 130, separates the oil inlet path and the oil outlet path, and the low-temperature lubricating oil can act on the pad body 110 as quickly as possible, thereby improving the lubrication efficiency.

[0047] The bearing block structure provided in the embodiment of the present application significantly reduces the amount of lubricating oil required for the leading edge direct lubrication oil supply bearing compared to traditional immersed lubricated bearings, greatly reduces the power consumption of the entire machine, and achieves the energy-saving goal; the structural design of the leading edge oil inlet groove 120 is conducive to ensuring that the external low-temperature lubricating oil enters the lubrication area sufficiently and directly. As the sufficient low-temperature lubricating oil is fully mixed with the hot oil in the bearing, the overall temperature of the lubricating oil is reduced, thereby reducing the heat transferred to the bearing, which is conducive to ensuring that the bearing operates at a reasonable temperature.

[0048] like Figure 5 As shown, in a possible implementation manner, there are multiple throttling holes 140 .

[0049] In this technical solution, there are multiple throttle holes 140. Such a configuration can improve the oil intake efficiency. At the same time, some of the throttle holes 140 can be blocked to adjust the oil intake amount, so that the bearing equipped with the tile structure is suitable for different usage scenarios.

[0050] In some examples, to facilitate the production and processing of the tile structure, the number of the throttling holes 140 may be 1 to 5.

[0051] like Figures 1 to 5 As shown, in a feasible implementation manner, the oil inlet groove 120 is arranged along the width direction of the pad body 110 ; and the oil outlet groove 130 is arranged along the width direction of the pad body 110 .

[0052] In this technical solution, an arrangement of the oil inlet groove 120 and the oil outlet groove is further provided, both of which are arranged along the width direction of the tile body 110, which can further improve the efficiency of oil inlet and oil outlet, thereby improving the lubrication effect.

[0053] In a feasible implementation manner, the tile structure further includes: a plurality of hole plugs, the plurality of hole plugs have different sizes, and the hole plugs are used to be disposed in the throttling hole 140 .

[0054] In this technical solution, the tile structure may further include a hole plug, and there may be multiple hole plugs with different sizes. The hole plug is used to be arranged in the throttling hole 140. Based on this, the throttling hole 140 can have different openings, so that the actual size of the throttling hole 140 can be adjusted, thereby controlling the supply amount of lubricating oil.

[0055] In a possible implementation, the pad body 110 is made of a copper-chromium alloy material.

[0056] In this technical solution, the material of the shoe body 110 is further provided. The shoe body 110 is made of copper-chromium alloy material to improve the thermal conductivity, thereby making the equipment run safer and effectively reducing the bearing shoe temperature by 10%.

[0057] In a feasible implementation manner, the surface of the shoe body 110 facing the shaft is coated with a babbitt metal coating.

[0058] In this technical solution, the surface of the tile body 110 facing the rotating shaft is coated with a babbitt alloy coating, and the babbitt alloy coating has the characteristics of high hardness and high wear resistance. By coating the babbitt alloy coating on the tile body 110, the service life of the tile body 110 can be improved.

[0059] like Figure 6 As shown, according to the second aspect of the embodiment of the present application, a bearing is proposed, comprising: a pad structure as in any of the above technical solutions; a bearing body 210, and the pad structure is connected to the bearing body 210.

[0060] The bearing provided in the embodiment of the present application includes a pad structure such as any of the above-mentioned technical solutions, so the bearing has all the beneficial effects of the pad structure of the above-mentioned technical solutions.

[0061] The bearing pad structure provided in the embodiment of the present application includes a pad body 110, an oil inlet groove 120 arranged at the front edge of the pad body 110, an oil drain groove 130 arranged at the rear edge of the pad body 110, and a throttle hole 140 connected to the oil inlet groove 120. When the bearing is working, the lubricating oil with a lower temperature can enter the oil inlet groove 120 through the throttle hole 140, and then the lubricating oil directly forms an oil film on the pad body 110 to play a lubricating role. As the bearing rotates, the high-temperature lubricating oil can be discharged through the oil drain groove 130, and then the discharged higher-temperature lubricating oil can be recovered and used after the higher-temperature lubricating oil is cooled. Based on this, the bearing provided by the embodiment of the present application adopts the method of feeding oil into and discharging oil between two adjacent pads in the traditional technology, and adopts the method of feeding oil into and discharging oil from the leading edge of the pad body 110 and discharging oil from the trailing edge. The oil feeding and discharging paths are different, and the low-temperature lubricating oil and the high-temperature lubricating oil will not interfere with each other, which can better play the role of lubrication. At the same time, an oil film can be formed on the pad body 110 as quickly as possible, which can further improve the lubrication effect and thus reduce power consumption.

[0062] like Figure 6 As shown, in a feasible implementation manner, the bearing further includes: a fulcrum 210 , and the shoe structure is connected to the bearing body 210 via the fulcrum 210 .

[0063] In this technical solution, the bearing may further include a fulcrum 210, and the shoe structure is connected to the bearing via the fulcrum 210, so that there is freedom between the shoe structure and the bearing body 210, which can further improve the lubrication effect.

[0064] In a feasible implementation manner, the supporting point 210 is a biased branch structure, and the biased branch ratio of the biased branch structure is 0.5 to 0.6.

[0065] In this technical solution, a style of the fulcrum 210 is further provided. The fulcrum 210 is an eccentric support structure with an eccentric support ratio of 0.5 to 0.6. This arrangement reduces the risk of rotor instability caused by sudden changes in bearing dynamic characteristics due to shoe sticking.

[0066] It can be understood that the eccentric support ratio of the eccentric support structure is the bearing angle from the oil inlet edge to the support point divided by the bearing angle.

[0067] In a feasible implementation manner, the fulcrum 210 is spherical.

[0068] In this technical solution, the shape of the fulcrum 210 is further provided. The fulcrum 210 is spherical, which increases the swing flexibility of the pad structure, improves the adaptability to rotor misalignment, and reduces the risk of rotor instability caused by sudden changes in bearing dynamic characteristics due to pad sticking.

[0069] In a feasible implementation, the bearing further includes: an oil inlet device, an oil inlet port is opened on the bearing body 210, the oil inlet port is connected to the oil inlet groove 120, and the oil inlet device is connected to the bearing body 210 and communicated with the oil inlet port.

[0070] In this technical solution, the bearing may further include an oil inlet device, which may be used to store lubricating oil. The lubricating oil may be supplied to the shoe structure through an oil inlet on the bearing body 210 .

[0071] According to a third aspect of an embodiment of the present application, a centrifugal compressor is proposed, which also includes: a bearing as described in any of the above technical solutions; and a rotor assembly, wherein the rotor assembly is connected to the bearing.

[0072] The centrifugal compressor provided in the embodiment of the present application includes a bearing as described in any of the above technical solutions. Therefore, the centrifugal compressor has all the beneficial effects of the bearings in the above technical solutions, which will not be elaborated here.

[0073] The centrifugal compressor provided in the embodiment of the present application, through the configuration of the above-mentioned bearings, can effectively improve the safety threshold of the bearings under high-speed and heavy-load conditions, while reducing the power consumption of the unit, which is of great significance for improving the operating safety of the high-speed and heavy-load unit.

[0074] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0075] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0076] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tile structure, characterized in that: include: Tile body; An oil inlet groove, the oil inlet groove is arranged at the front edge of the tile body; An oil drain groove, the oil drain groove is provided at the rear edge of the tile body; A throttle hole is provided through the shoe body and is connected to the oil inlet groove.

2. The tile structure according to claim 1, characterized in that: There are multiple throttling holes; and / or The oil inlet groove is arranged along the width direction of the shoe body; and / or The oil drainage groove is arranged along the width direction of the shoe body.

3. The tile structure according to claim 1, characterized in that: Also includes: A plurality of hole plugs are provided, and the sizes of the plurality of hole plugs are different. The hole plugs are used to be arranged in the throttling hole.

4. The tile structure according to claim 1, characterized in that: The tile body is made of copper-chromium alloy material; The surface of the shoe body facing the rotating shaft is coated with a babbitt metal coating.

5. A bearing, characterized in that: include: A plurality of tile structures according to any one of claims 1 to 4; A bearing body, the shoe structure is connected to the bearing body.

6. The bearing according to claim 5, characterized in that: Also includes: A fulcrum, wherein the shoe structure is connected to the bearing body via the fulcrum.

7. The bearing according to claim 6, characterized in that The supporting point is a biased branch structure, and the biased branch ratio of the biased branch structure is 0.5 to 0.

6.

8. The bearing according to claim 6, characterized in that: The fulcrum is spherical.

9. The bearing according to claim 6, characterized in that: Also includes: An oil inlet device is provided on the bearing body, the oil inlet is connected to the oil inlet groove, and the oil inlet device is connected to the bearing body and connected to the oil inlet.

10. A centrifugal compressor, characterized in that: Also includes: A bearing as claimed in any one of claims 5 to 9; A rotor assembly is connected to the bearing.

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