Novel steam turbine bearing bush

Abstract

The utility model relates to a novel turbine bearing bush and relates to the field of turbine bearing bushes. The bearing bush comprises a bearing bush framework, a bearing bush lining and an oiling piece, the bearing bush lining is assembled on the inner wall of the bearing bush framework, assembling hole rings are fixed to the two sides of the outer circumferential face of the bearing bush framework, the oiling piece is installed on the portion, between the assembling hole rings on the two sides, of the outer circumferential face of the bearing bush framework, and rectangular grooves are formed in the two sides of the inner arc-shaped face of the bearing bush lining; a plurality of rectangular grooves are formed in the bearing bush framework, a plurality of blind holes are formed in the rectangular grooves, a plurality of oil guide grooves are formed between the rectangular grooves in the two sides of the inner arc-shaped face of the bearing bush lining in a penetrating mode, oil discharge grooves are formed in the outer edges, penetrating through the bearing bush lining, of the rectangular grooves, a plurality of oil filling holes are formed in the bearing bush framework in a penetrating mode, and a plurality of oil inlet holes are formed in the bearing bush lining in a penetrating mode. The multiple oil inlet holes correspond to the multiple oil filling holes in a one-to-one penetrating mode, and the multiple oil inlet holes are connected with the multiple oil guide grooves in a one-to-one corresponding penetrating mode. The lubricating oil return efficiency and the lubricating effect of the bearing bush are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turbine bearing, in particular to a new turbine bearing. BACKGROUND

[0002] The turbine bearing is a very important component in the turbine, mainly used for supporting the rotor and reducing the friction generated in the rotating process. Good lubrication is crucial for the bearing. The lubricating oil not only reduces the direct contact between the metal surfaces, but also takes away the heat generated by friction, preventing overheating.

[0003] The existing turbine bearing with publication number CN202348979U includes a bearing body, the bearing body is an arc-shaped concave surface, the upper and lower parts of the arc bottom of the arc-shaped concave surface are respectively provided with first and second oil holes, and the outer side of the bearing body is respectively provided with upper and lower edges. The utility model discloses a reasonable structure design and long service life.

[0004] For the related technology in the above, the inventor found that the above bearing inner ring surface is provided with a plurality of oil holes, and the oil holes are used to guide and deliver lubricating oil to the rotor and the bearing. However, the lubricating oil lacks fluidity, and the friction heat generated by the rotation of the rotor and the bearing is transferred to the lubricating oil, which cannot be quickly discharged, resulting in the change of the expansion coefficient of the bearing temperature rise, the reduction of the use precision and the use lubricity. UTILITY MODEL CONTENTS

[0005] In order to overcome the situation that the existing bearing inner ring surface is provided with a plurality of oil holes, and the oil holes are used to guide and deliver lubricating oil to the rotor and the bearing. However, the lubricating oil lacks fluidity, and the friction heat generated by the rotation of the rotor and the bearing is transferred to the lubricating oil, which cannot be quickly discharged, resulting in the change of the expansion coefficient of the bearing temperature rise, the reduction of the use precision and the use lubricity, the present application provides a new turbine bearing.

[0006] The present application provides a new turbine bearing adopting the following technical scheme:

[0007] A new turbine bearing, comprising a bearing skeleton, a bearing lining and an oiling piece, the inner wall of the bearing skeleton is assembled with the bearing lining, and the outer circumferential surface of the bearing skeleton is fixed with assembly hole rings on both sides; the oiling piece is installed on the outer circumferential surface of the bearing skeleton between the two assembly hole rings; the inner arc surface of the bearing lining is provided with rectangular grooves on both sides, and a plurality of blind holes are arranged in the rectangular grooves; oil guide grooves are arranged between the rectangular grooves on both sides of the inner arc surface of the bearing lining; the rectangular grooves are provided with oil discharge grooves through the outer edge of the bearing lining; a plurality of oiling holes are arranged through the bearing lining; the plurality of oiling holes and the plurality of oiling holes correspond one by one; and the plurality of oiling holes and the plurality of oil guide grooves correspond one by one.

[0008] By adopting the technical scheme, the bush inner lining is integrally sintered and formed on the inner arc surface of the bush skeleton in use, then the oiling member is assembled between the two assembly hole rings on the outer wall of the bush skeleton, the lubricating oil is filled in advance on the oil storage ring shell of the oiling member in use, the lubricating oil flows from the inner arc surface of the oil storage ring shell to the outer wall of the bush skeleton, then the lubricating oil flows into the interior from the assembly hole ring, and then the lubricating oil enters the inner arc surface through the oil inlet hole on the bush inner lining, the lubricating oil is guided into the rectangular groove through the oil guiding groove, the rectangular groove, and the bottom surface of the rectangular groove is arranged with a plurality of circular blind holes, so that the oil film between the bush and the bearing is more easily formed, the lubricating effect is enhanced, the loss of the lubricating oil is prevented, the circular blind hole can effectively increase the oil storage space, and the oil discharge groove intercommunicating with the rectangular groove and the bush end surface is arranged, so that the lubricating oil return efficiency and the lubricating effect of the bush are enhanced.

[0009] Optionally, the assembly hole ring is used for late-stage fixed assembly, and a plurality of guide grooves are uniformly arranged between the two assembly hole rings on the outer wall of the bush skeleton.

[0010] By adopting the technical scheme, the assembly hole ring is arranged for the late-stage assembly of the bush with the bush frame, and the plurality of guide grooves arranged between the two assembly hole rings on the outer wall of the bush skeleton facilitate the assembly and connection of the oiling member on the bush skeleton.

[0011] Optionally, the oiling member comprises a cotton block and an oil storage ring shell, the cotton block is arranged on the inner arc surface of the oil storage ring shell, and the cotton block is filled between the two assembly hole rings on the outer wall of the bush skeleton.

[0012] By adopting the technical scheme, the arrangement of the cotton block facilitates the uniform dispersion of the lubricating oil, ensures the full dispersion of the lubricating oil, and is beneficial to the effectiveness of the later addition of the lubricating oil.

[0013] Optionally, a plurality of oil permeation holes are uniformly and intercommunicatingly arranged on the inner arc surface of the oil storage ring shell, and an oiling pipe column is intercommunicated on the outer arc surface of the oil storage ring shell.

[0014] By adopting the technical scheme, the lubricating oil is permeated from the oil permeation holes on the inner arc surface of the oil storage ring shell, the lubricating oil is soaked in the cotton block, the lubricating oil in the cotton block is added to the bush skeleton, and the oiling pipe column arranged on the outer wall of the oil storage ring shell is used for regular filling of the lubricating oil.

[0015] Optionally, a plurality of convex columns are vertically and fixedly arranged on the two side end surfaces of the oil storage ring shell, and the convex columns are slidingly inserted into the guide grooves of the assembly hole ring.

[0016] By adopting the technical scheme, the convex columns on the two sides of the oil storage ring shell are positioned and inserted into the guide grooves of the assembly hole ring, and the guiding sliding property of the assembly of the bush skeleton and the oiling member is improved.

[0017] Optionally, the outer wall of the oil storage ring shell is uniformly fixed with multiple screw cylinders on both sides.

[0018] By adopting the above technical scheme, the multiple screw cylinders on the outer wall of the oil storage ring shell are used for locking and mounting on the bearing bush skeleton in the later stage.

[0019] Optionally, the outer wall of the bearing bush skeleton is fixed with assembly screw pipes on both sides, and the assembly screw pipes are fixed with assembly bolts in the form of threads, and the assembly bolts are assembled in the screw cylinders in the form of threads for locking and assembling the bearing bush skeleton and the oiling component.

[0020] By adopting the above technical scheme, the assembly bolts are assembled in the screw cylinders in the form of threads for locking and assembling the bearing bush skeleton and the oiling component, so as to ensure the effectiveness of the assembly of the oiling component.

[0021] Optionally, the inner wall of the bearing bush skeleton is fixed with multiple convex rings, the outer wall of the bearing bush lining is provided with multiple supporting grooves matched with the multiple convex rings, and the bearing bush skeleton and the bearing bush lining are integrally sintered.

[0022] By adopting the above technical scheme, the outer wall of the bearing bush skeleton and the bearing bush lining is provided with multiple supporting grooves matched with the multiple convex rings, and the bearing bush skeleton and the bearing bush lining are integrally sintered, so as to improve the stability of the assembly of the bearing bush skeleton and the bearing bush lining, and the bearing bush is made of Wusih alloy material, which has the advantages of high melting point, high tensile strength, high hardness and low thermal expansion coefficient, so as to avoid the deformation caused by excessive or insufficient tight force of the bearing bush, and thus the steam turbine can be continuously and stably operated.

[0023] In summary, the present application has at least one of the following beneficial technical effects: the inner arc surface of the bearing bush skeleton is integrally sintered to assemble the bearing bush lining, then the oiling component is assembled on the outer wall of the bearing bush skeleton between the two side assembly hole rings, the lubricating oil is filled into the oil storage ring shell of the oiling component in advance, the lubricating oil flows from the inner arc surface of the oil storage ring shell to the outer wall of the bearing bush skeleton, then the lubricating oil flows into the inner part from the assembly hole ring, and then the lubricating oil enters the inner arc surface through the oil inlet hole on the bearing bush lining, and then the lubricating oil is guided into the rectangular groove through the oil guiding groove, the rectangular groove, the bottom surface of the rectangular groove is arranged with a plurality of circular blind holes, the rectangular groove can make it easier to form an oil film between the bearing bush and the bearing, so as to enhance the lubricating effect, and at the same time, the loss of lubricating oil is prevented, the circular blind hole can effectively increase the oil storage space, and at the same time, the oil discharging groove is arranged in communication with the rectangular groove and the bearing bush end surface, so as to enhance the lubricating efficiency and lubricating effect of the bearing bush. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0025] Figure 2 is a schematic diagram of the overall structure of the embodiment of the present application in a disassembled state;

[0026] Figure 3 is a structural schematic diagram of the bearing shell framework in a disassembled state according to an embodiment of the present application;

[0027] Figure 4 is a structural schematic diagram of the bearing shell lining in a disassembled state according to an embodiment of the present application;

[0028] Figure 5 is a structural schematic diagram of the oiling member in a disassembled state according to an embodiment of the present application.

[0029] The reference signs are as follows: 1, bearing shell framework; 11, protruding ring; 12, oiling hole; 13, assembly hole ring; 14, guide groove; 15, assembly screw pipe; 16, assembly bolt; 2, bearing shell lining; 21, support groove; 22, rectangular groove; 23, oil guide groove; 24, blind hole; 25, oil discharge groove; 26, oil inlet hole; 3, oiling member; 31, cotton block; 32, oil storage ring shell; 33, protruding column; 34, screw cylinder. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the accompanying drawings.

[0031] The present application discloses a new type of turbine bearing shell. Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a new type of turbine bearing shell comprises a bearing shell framework 1, a bearing shell lining 2 and an oiling member 3, the bearing shell lining 2 is assembled on the inner wall of the bearing shell framework 1, and assembly hole rings 13 are fixed on both sides of the outer circumferential surface of the bearing shell framework 1, the oiling member 3 is installed on the outer circumferential surface of the bearing shell framework 1 between the two assembly hole rings 13, rectangular grooves 22 are formed on both sides of the inner arc surface of the bearing shell lining 2, a plurality of blind holes 24 are formed in the rectangular grooves 22, an oil guide groove 23 is formed through the rectangular grooves 22 on both sides of the inner arc surface of the bearing shell lining 2, the oil guide groove 23 is provided with a plurality of oil guide grooves, an oil discharge groove 25 is formed through the outer edge of the bearing shell lining 2 from the rectangular groove 22, a plurality of oiling holes 12 are formed through the bearing shell framework 1, a plurality of oil inlet holes 26 are formed through the bearing shell lining 2, the plurality of oil inlet holes 26 and the plurality of oiling holes 12 correspond one-to-one, and the plurality of oil inlet holes 26 and the plurality of oil guide grooves 23 correspond one-to-one and are connected.

[0032] By adopting the above technical scheme, the bush inner lining 2 is integrally sintered and formed on the inner arc surface of the bush skeleton 1, and then the oiling member 3 is assembled between the two assembly hole rings 13 on the outer wall of the bush skeleton 1. In use, the lubricating oil is pre-filled on the oil storage ring shell 32 of the oiling member 3. In use, the lubricating oil flows from the inner arc surface of the oil storage ring shell 32 to the outer wall of the bush skeleton 1, flows into the inside from the assembly hole ring 13, and then flows into the inner arc surface through the oil inlet hole 26 on the bush inner lining 2. The lubricating oil is guided into the rectangular groove 22 through the oil guiding groove 23. The rectangular groove 22 can make it easier to form an oil film between the bush and the bearing, thereby enhancing the lubricating effect, and at the same time, preventing the loss of lubricating oil. The circular blind hole 24 can effectively increase the oil storage space, and at the same time, the oil discharge groove 25 intercommunicating with the rectangular groove 22 and the bush end face is arranged, so as to enhance the lubricating and oil return efficiency of the bush.

[0033] With reference to Figure 3 The assembly hole ring 13 is used for later fixing and assembly, and a plurality of guide grooves 14 are evenly arranged between the two assembly hole rings 13 on the outer wall of the bush skeleton 1. In use, the assembly hole ring 13 is arranged for later assembly of the bush skeleton 1 with the bush frame, and the plurality of guide grooves 14 arranged between the two assembly hole rings 13 on the outer wall of the bush skeleton 1 facilitate the assembly and connection of the oiling member 3 on the bush skeleton 1.

[0034] With reference to Figure 5 The oiling member 3 includes a cotton block 31 and an oil storage ring shell 32. The cotton block 31 is arranged on the inner arc surface of the oil storage ring shell 32, and the cotton block 31 is filled between the two assembly hole rings 13 on the outer wall of the bush skeleton 1. The arrangement of the cotton block 31 facilitates uniform dispersion of the lubricating oil, ensures sufficient dispersion of the lubricating oil, and facilitates the effectiveness of later addition of the lubricating oil. The inner arc surface of the oil storage ring shell 32 is uniformly and continuously provided with oil permeable holes, and the outer arc surface of the oil storage ring shell 32 is continuously provided with an oiling pipe column. The lubricating oil is permeated from the oil permeable holes on the inner arc surface of the oil storage ring shell 32, the lubricating oil is soaked in the cotton block 31, the lubricating oil in the cotton block 31 is added to the bush skeleton 1, and at the same time, the oiling pipe column arranged on the outer wall of the oil storage ring shell 32 is used for regular addition of the lubricating oil.

[0035] With reference to Figure 3 and Figure 5The convex column 33 on both sides of the oil storage ring shell 32 is vertically and uniformly fixed on the end face, and is slidingly inserted into the guide groove 14 of the assembly hole ring 13. The convex column 33 on both sides of the oil storage ring shell 32 is positioned and inserted into the guide groove 14 of the assembly hole ring 13, thereby improving the guiding sliding property of the assembly of the bearing bush skeleton 1 and the oiling part 3. A plurality of screw cylinders 34 are uniformly fixed on the outer wall of the oil storage ring shell 32. The plurality of screw cylinders 34 on the outer wall of the oil storage ring shell 32 are used for later locking and mounting on the bearing bush skeleton 1. Assembly screw pipes 15 are fixed on the outer wall of the bearing bush skeleton 1, assembly screws 16 are threadedly installed in the assembly screw pipes 15, and the assembly screws 16 are threadedly assembled in the screw cylinders 34 for locking and assembling the bearing bush skeleton 1 and the oiling part 3. In use, the assembly screws 16 are threadedly assembled in the screw cylinders 34 for locking and assembling the bearing bush skeleton 1 and the oiling part 3, thereby ensuring the effectiveness of the assembly of the oiling part 3.

[0036] With reference to Figure 3 and Figure 4 A plurality of convex rings 11 are fixed on the inner wall of the bearing bush skeleton 1, a plurality of supporting grooves 21 matched with the plurality of convex rings 11 are formed on the outer wall of the bearing bush lining 2, and the bearing bush skeleton 1 and the bearing bush lining 2 are integrally sintered. A plurality of supporting grooves 21 matched with the plurality of convex rings 11 are formed on the outer wall of the bearing bush skeleton 1 and the bearing bush lining 2, and the bearing bush skeleton 1 and the bearing bush lining 2 are integrally sintered, thereby improving the stability of the assembly of the bearing bush skeleton 1 and the bearing bush lining 2. The bearing bush lining 2 is made of a U alloy material, which has the advantages of high melting point, high tensile strength, high hardness and low thermal expansion coefficient, thereby avoiding deformation caused by excessive or insufficient tight force on the back of the bush, and enabling the steam turbine to continuously and stably operate.

[0037] The implementation principle of the new type of bearing bush of the steam turbine is that the bearing bush lining 2 is integrally sintered on the inner arc surface of the bearing bush skeleton 1, the oiling part 3 is assembled on the outer wall of the bearing bush skeleton 1 between the two assembly hole rings 13, lubricating oil is pre-filled into the oil storage ring shell 32 of the oiling part 3, the lubricating oil is discharged from the oil permeable hole on the inner arc surface of the oil storage ring shell 32, the lubricating oil is soaked in the cotton block 31, the lubricating oil in the cotton block 31 is added to the bearing bush skeleton 1, the lubricating oil flows from the inner arc surface of the oil storage ring shell 32 to the outer wall of the bearing bush skeleton 1, the lubricating oil flows into the inner part from the assembly hole ring 13, then the lubricating oil enters the inner arc surface through the oil inlet hole 26 on the bearing bush lining 2, the lubricating oil is guided into the rectangular groove 22 through the oil guide groove 23, the rectangular groove 22, the bottom surface of the rectangular groove 22 is provided with a plurality of circular blind holes 24, the rectangular groove 22 can make it easier to form an oil film between the bearing bush and the bearing, thereby enhancing the lubricating effect and preventing the loss of lubricating oil, the circular blind holes 24 can effectively increase the oil storage space, and the oil discharge groove 25 is arranged in communication with the rectangular groove 22 and the end surface of the bearing bush, thereby enhancing the lubricating and oil return efficiency of the bearing bush.

[0038] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A new type of turbine bearing shell, characterized in that, The application relates to a bearing bush, which comprises a bearing bush framework (1), a bearing bush lining (2) and an oiling part (3), the inner wall of the bearing bush framework (1) is assembled with the bearing bush lining (2), the outer circumferential surface of the bearing bush framework (1) is fixed with assembling hole rings (13) on both sides, the oiling part (3) is installed on the outer circumferential surface of the bearing bush framework (1) between the two assembling hole rings (13), the inner arc surface of the bearing bush lining (2) is provided with rectangular grooves (22) on both sides, a plurality of blind holes (24) are arranged in the rectangular grooves (22), oil guide grooves (23) are arranged between the rectangular grooves (22) on both sides of the inner arc surface of the bearing bush lining (2), the rectangular grooves (22) are provided with oil discharge grooves (25) which penetrate the outer edge of the bearing bush lining (2), a plurality of oiling holes (12) are arranged through the bearing bush framework (1), a plurality of oil inlet holes (26) are arranged through the bearing bush lining (2), the plurality of oil inlet holes (26) and the plurality of oiling holes (12) are in one-to-one through correspondence, and the plurality of oil inlet holes (26) are in one-to-one through connection with the plurality of oil guide grooves (23).

2. A novel turbine bearing shell as claimed in claim 1, wherein: The assembling hole rings (13) are used for late-stage fixing and assembling, a plurality of guide grooves (14) are evenly arranged between the assembling hole rings (13) on the two sides of the outer wall of the bearing bush framework (1).

3. A novel turbine bearing shell as claimed in claim 2, wherein: The oiling part (3) comprises a cotton block (31) and an oil storage ring shell (32), the cotton block (31) is arranged on the inner arc surface of the oil storage ring shell (32), and the cotton block (31) is filled between the assembling hole rings (13) on the two sides of the outer wall of the bearing bush framework (1).

4. A novel turbine bearing shell as claimed in claim 3, wherein: Oil permeation holes are evenly arranged through the inner arc surface of the oil storage ring shell (32), and an oiling pipe column is communicated on the outer arc surface of the oil storage ring shell (32).

5. A novel turbine bearing shell as claimed in claim 4, wherein: Protruding columns (33) are vertically fixed on the two side end faces of the oil storage ring shell (32), and the protruding columns (33) are slidingly inserted into the guide grooves (14) of the assembling hole rings (13).

6. A novel turbine bearing shell as claimed in claim 5, wherein: A plurality of screw cylinders (34) are fixed on the outer wall of the oil storage ring shell (32).

7. A novel turbine bearing shell as claimed in claim 6, wherein: Assembling screw pipes (15) are fixed on the two sides of the outer wall of the bearing bush framework (1), assembling bolts (16) are threadedly arranged in the assembling screw pipes (15), and the assembling bolts (16) are threadedly assembled in the screw cylinders (34) to lock and assemble the bearing bush framework (1) and the oiling part (3).

8. A new type of turbine bearing bush as claimed in claim 1, characterized in that: A plurality of convex rings (11) are fixed on the inner wall of the bearing bush framework (1), a plurality of supporting grooves (21) matched with the plurality of convex rings (11) are arranged on the outer wall of the bearing bush lining (2), and the bearing bush framework (1) and the bearing bush lining (2) are integrally sintered.

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