Steam turbine thrust bearing with high wear resistance

Abstract

The utility model discloses a turbine thrust bearing with high wear resistance, which comprises a bearing inner ring and a bearing outer ring, and the bearing inner ring is arranged in the bearing outer ring; the retainer structure is arranged between the bearing outer ring and the bearing inner ring; a rolling body is arranged in the retainer structure and is in contact with the outer side of the bearing inner ring and the inner side of the bearing outer ring respectively; a lubricating structure is arranged on the retainer structure, and the rolling body in the retainer is lubricated through the lubricating structure. The lubricating structure is arranged on the retainer structure, and the lubricating structure fully lubricates the rolling body through the oil cavity, the oil inlet hole and the oil outlet hole; the lubricant is uniformly distributed around the rolling body, so that the friction between the rolling body and the bearing inner ring and the bearing outer ring can be obviously reduced, the abrasion is reduced, and the operation efficiency and the service life of the bearing are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a thrust bearing, concretely relates to a high wear resistance steam turbine thrust bearing. BACKGROUND

[0002] In the traditional steam turbine thrust bearing, due to the harsh running environment and long time high load operation, the rolling body and inner and outer rings inside the bearing are prone to excessive wear, resulting in shortened bearing life and performance decline. Ordinary materials are prone to wear under high friction and high temperature environment, resulting in shortened bearing life; traditional lubrication mode is difficult to ensure uniform distribution of lubricant, and insufficient lubrication or lubricating oil loss will aggravate friction and wear. SUMMARY

[0003] The utility model provides a high wear resistance steam turbine thrust bearing to solve the problems in the background art.

[0004] The utility model discloses a high wear resistance steam turbine thrust bearing, which is realized through the following technical scheme, comprising:

[0005] A bearing inner ring and a bearing outer ring, the bearing inner ring is arranged inside the bearing outer ring;

[0006] A retainer structure is arranged between the bearing outer ring and the bearing inner ring; the retainer structure is internally provided with rolling bodies, and the rolling bodies are in contact with the outer side of the bearing inner ring and the inner side of the bearing outer ring respectively;

[0007] A lubricating structure is arranged on the retainer structure to lubricate the rolling bodies in the retainer.

[0008] As a preferred technical scheme, outer retaining rings are arranged outward on both sides of the bearing inner ring, inner retaining rings are arranged inward on both ends of the bearing outer ring, and the retainer structure is limited by the inner retaining rings and the outer retaining rings.

[0009] As a preferred technical scheme, the retainer structure comprises a first retainer and a second retainer.

[0010] Mounting cavities for fixing the rolling bodies are arranged on the first retainer and the second retainer, and the lubricating structure is arranged on the first retainer and the second retainer.

[0011] The oil outlet holes of the lubricating structure correspond to the positions of the mounting cavities, and the lubricating structure is used to lubricate, thereby ensuring the rotatability of the bearing inner ring and the bearing outer ring.

[0012] As a preferred technical scheme, the lubricating structure comprises oil chambers and oil inlet holes arranged inside the first retainer and the second retainer.

[0013] The oil inlet hole is arranged at the outer side of the first retainer and the second retainer, and the oil inlet hole is communicated with the oil cavity of the first retainer and the second retainer; the oil outlet hole is also communicated with the first retainer and the second retainer, and a one-way valve is arranged on the oil outlet hole, so that the lubricating oil entering the mounting cavity cannot flow into the oil cavity.

[0014] As a preferred technical scheme, the oil inlet hole is provided with an oil blocking plug, and the oil cavity is closed by the oil blocking plug.

[0015] As a preferred technical scheme, the bearing inner ring and the bearing outer ring are made of wear-resistant materials.

[0016] The beneficial effects of the utility model are:

[0017] The bearing inner ring and the bearing outer ring are made of high wear-resistant materials, which can significantly improve the service life of the bearing and enable the bearing to maintain good performance in a harsh working environment.

[0018] The retainer structure is provided with a lubricating structure, which fully lubricates the rolling elements through the oil cavity, the oil inlet hole and the oil outlet hole; the lubricant is uniformly distributed around the rolling elements, which can significantly reduce the friction between the rolling elements and the bearing inner ring and the bearing outer ring, reduce wear and tear, and improve the running efficiency and service life of the bearing. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Fig. 1 It is a three-dimensional structure schematic diagram of the utility model;

[0021] Fig. 2 It is an explosion structure schematic diagram of the utility model;

[0022] Fig. 3 It is a retainer cross-section structure schematic diagram of the utility model.

[0023] Mark explanation:

[0024] 1, bearing inner ring; 2, bearing outer ring; 3, rolling element; 4, outer retainer; 5, inner retainer; 6, first retainer; 7, second retainer; 8, oil cavity; 9, oil inlet hole; 10, oil outlet hole; 11, one-way valve; 12, mounting cavity; 13, oil injection plug. Specific implementation

[0025] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of the features and / or steps are mutually exclusive.

[0026] As shown in Figs. 1-3 The utility model discloses a high wear resistance's steam turbine thrust bearing, including:

[0027] Bearing inner race 1 and bearing outer ring 2, bearing inner race 1 is placed inside bearing outer ring 2, so that the bearing can bear the force from different directions, thereby ensuring its stable operation;

[0028] Cage structure, the cage structure is placed between bearing outer ring 2 and bearing inner race 1, the inside of the cage structure is provided with rolling body 3, and the rolling body 3 is in contact with the outer side of bearing inner race 1 and the inner side of bearing outer ring 2 respectively;

[0029] The lubricating structure is arranged on the cage structure, the rolling body 3 in the cage is lubricated by the lubricating structure, which can effectively reduce friction and improve the service life of the bearing, and the existence of the lubricating structure can significantly reduce the friction between the rolling body and the bearing inner race 1 and the bearing outer ring 2, thereby improving the operation efficiency and service life of the bearing.

[0030] Wherein, bearing inner race 1 both sides outwardly provided with outer retainer 4, and the both ends of bearing outer ring 2 are provided with inner retainer 5 inwardly, and the cage structure is limited by inner retainer 5 and outer retainer 4, to ensure that it remains stable during operation.

[0031] Wherein, the cage structure includes first cage 6 and second cage 7;

[0032] And the first cage 6 and the second cage 7 are provided with mounting cavity 12 for fixing the rolling body 3, and the lubricating structure is arranged on the first cage 6 and the second cage 7;

[0033] The oil outlet hole 10 of the lubricating structure corresponds to the position of the mounting cavity 12, and the lubricating structure is lubricated, to ensure that the lubricant is evenly distributed around the rolling body 3, thereby ensuring the rotation of the bearing inner race 1 and the bearing outer ring 2.

[0034] Wherein, the lubricating structure includes oil cavity 8 and oil inlet hole 9 arranged inside the first cage 6 and the second cage 7;

[0035] The oil inlet hole 9 is arranged on the outer side of the first cage 6 and the second cage 7, and the oil inlet hole 9 is communicated with the oil cavity 8 of the first cage 6 and the second cage 7;The oil outlet hole 10 is also communicated with the first cage 6 and the second cage 7, and the oil outlet hole 10 is provided with a one-way valve 11, so that the lubricating oil in the mounting cavity 12 cannot flow into the oil cavity 8.

[0036] In addition, the oil inlet hole 9 is provided with an oil blocking plug, and the oil cavity 8 is closed through the oil blocking plug, so that the reasonable distribution of the lubricant in the bearing can be ensured, and the lubrication effect is improved.

[0037] In addition, the bearing inner ring 1 and the bearing outer ring 2 are both made of wear-resistant materials, so that the service life of the bearing can be significantly improved, and the bearing can maintain good performance in a harsh working environment.

[0038] The bearing inner ring and the bearing outer ring are both made of high wear-resistant materials, so that the service life of the bearing can be significantly improved, and the bearing can maintain good performance in a harsh working environment; the retainer structure is provided with a lubricating structure, the lubricating structure fully lubricates the rolling elements through the oil cavity 8, the oil inlet hole and the oil outlet hole; the lubricant is uniformly distributed around the rolling elements, so that the friction between the rolling elements and the bearing inner ring and the bearing outer ring can be significantly reduced, the wear is reduced, and the running efficiency and the service life of the bearing are improved.

[0039] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any change or replacement without creative labor should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.

Claims

1. A high-wear-resistant turbine thrust bearing, characterized in that, Include: The bearing inner ring (1) and the bearing outer ring (2), the bearing inner ring (1) is placed inside the bearing outer ring (2); The cage structure is placed between the bearing outer ring (2) and the bearing inner ring (1);The inside of the cage structure is provided with rolling body (3), and the rolling body (3) is respectively in contact with the outer side of the bearing inner ring (1) and the inner side of the bearing outer ring (2); The lubricating structure is arranged on the cage structure, and the rolling body (3) in the cage is lubricated by the lubricating structure.

2. The high-wear-resistant turbine thrust bearing of claim 1, wherein: The bearing inner ring (1) is provided with outer retainer (4) on both sides, and the bearing outer ring (2) is provided with inner retainer (5) on both ends, and the cage structure is limited by the inner retainer (5) and the outer retainer (4).

3. The high-wear resistance turbine thrust bearing of claim 1, wherein: The cage structure includes first cage (6) and second cage (7); And the first cage (6) and the second cage (7) are provided with mounting cavity (12) for fixing rolling body (3), and the lubricating structure is arranged on the first cage (6) and the second cage (7); The oil outlet hole (10) of the lubricating structure corresponds to the position of the mounting cavity (12), and the oil outlet hole (10) is lubricated, so as to ensure the rotation of the bearing inner ring (1) and the bearing outer ring (2).

4. The high-wear resistance turbine thrust bearing of claim 3, wherein: The lubricating structure includes oil cavity (8) and oil inlet hole (9) arranged inside the first cage (6) and the second cage (7); The oil inlet hole (9) is arranged on the outer side of the first cage (6) and the second cage (7), and the oil inlet hole (9) is communicated with the oil cavity (8) of the first cage (6) and the second cage (7);The oil outlet hole (10) is also communicated with the first cage (6) and the second cage (7), and the oil outlet hole (10) is provided with one-way valve (11), so that the lubricating oil in the mounting cavity (12) cannot flow into the oil cavity (8).

5. The high-wear-resistance turbine thrust bearing according to claim 4, characterized in that: The oil inlet hole (9) is provided with oil plug (13), and the oil cavity (8) is closed by the oil plug (13).

6. The high-wear resistance turbine thrust bearing of claim 1, wherein: The bearing inner ring (1) and the bearing outer ring (2) are made of wear-resistant material.

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