Multi-point supporting and balancing device for thrust bearing of steam turbine

Abstract

The utility model discloses a multi-point support balancing device of a steam turbine thrust bearing, which relates to the technical field of steam turbine thrust bearings and comprises a support seat, the upper end of the support seat is fixedly connected with an outer fixed shell, the inner side of the outer fixed shell is sleeved with a bearing main body, the outer side of the bearing main body is fixedly connected with a plurality of fixed columns, and the fixed columns are fixedly connected with the support seat. A plurality of fixing columns are arranged on the outer side of the outer fixing shell, a plurality of clamping assemblies corresponding to the fixing columns are arranged on the outer side of the outer fixing shell, and each clamping assembly comprises a plurality of V-shaped clamping heads. The rotating rod is used for pushing the V-shaped clamping head to rotate around the shaft to clamp the fixing column, a multi-point supporting structure is formed, abrasion, caused by shaking and displacement, of the bearing can be reduced in cooperation with anti-skid textures of the V-shaped clamping head, and the service life of the bearing is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine thrust bearings, and in particular to a multi-point support and balancing device for steam turbine thrust bearings. Background Technology

[0002] In modern industry, steam turbines, as rotary power machines that convert steam energy into mechanical work, are widely used in industries such as power and chemicals. Thrust bearings, as key components of steam turbines, bear the axial thrust of the rotor, maintain its axial position, and ensure stable operation of the steam turbine. Currently, existing steam turbine thrust bearing support structures, using traditional support methods, struggle to achieve multi-point stable support for the bearings during actual operation. At high-speed operation, this can lead to bearing wobbling and displacement, resulting in accelerated bearing wear, reduced bearing life, and decreased turbine operational stability. To address these issues, we propose a multi-point support balancing device for steam turbine thrust bearings. Utility Model Content

[0003] The main objective of this invention is to provide a multi-point support and balancing device for turbine thrust bearings, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A multi-point support and balancing device for a steam turbine thrust bearing includes a support base, an outer fixed housing fixedly connected to the upper end of the support base, a bearing body sleeved on the inner side of the outer fixed housing, a plurality of fixed columns fixedly connected to the outer side of the bearing body, and a plurality of clamping assemblies corresponding to the fixed columns arranged on the outer side of the outer fixed housing. The clamping assemblies include a plurality of V-shaped clamping heads, and the fixed columns are located inside the plurality of V-shaped clamping heads.

[0006] Preferably, the clamping assembly further includes a connecting sleeve, which is fixedly connected to the outer fixed housing. A servo motor is fixedly connected to one end of the connecting sleeve, and a drive shaft is fixedly connected to the output end of the servo motor. A lead screw is fixedly connected to the other end of the drive shaft, and a threaded disc is threadedly connected to the outer side of the lead screw. The threaded disc is slidably connected to the inner side of the connecting sleeve.

[0007] Preferably, a slider is fixedly connected to the outer side of the threaded disc, and a groove corresponding to the slider is opened on the inner side of the connecting sleeve, and the slider is slidably connected to the inner side of the groove.

[0008] Preferably, a plurality of second rotating seats corresponding to the V-shaped clamping heads are fixedly connected to the side of the connecting sleeve away from the servo motor. One end of each of the plurality of V-shaped clamping heads is rotatably connected to the inner side of the corresponding second rotating seat. The other end of each of the plurality of V-shaped clamping heads is provided with anti-slip texture. The plurality of V-shaped clamping heads are clamped to the outside of the fixed post by the anti-slip texture.

[0009] Preferably, one end of the threaded disc is fixedly connected to a plurality of first rotating seats corresponding to the V-shaped clamping heads, and a rotating rod is rotatably connected to the outer side of each of the plurality of first rotating seats. The other end of each of the plurality of rotating rods is rotatably connected to the corresponding V-shaped clamping head.

[0010] Preferably, the outer side of the bearing body is provided with a bearing groove, and the inner side of the bearing groove is provided with a plurality of thrust bearings.

[0011] Preferably, the upper end of the support base has multiple mounting holes, and the inner side of the mounting holes is provided with fixing bolts. The support base is fixedly connected to the external equipment through the fixing bolts.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This multi-point support and balancing device for turbine thrust bearings uses a servo motor to drive a lead screw to rotate, which in turn drives a threaded disc to slide. A rotating rod then pushes a V-shaped clamping head to rotate around an axis and clamp a fixed column, forming a multi-point support structure. Combined with the anti-slip texture of the V-shaped clamping head, it can reduce the wear of the bearing caused by shaking and displacement, significantly extend the bearing's service life, and effectively solve the problem that traditional support methods cannot provide stable multi-point support for bearings.

[0014] 2. This multi-point support and balancing device for a steam turbine thrust bearing, through the coordinated operation of multiple thrust pads in the outer pad groove of the bearing body, further assists the thrust bearing in maintaining balance and improves the overall stability and reliability of the steam turbine operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a multi-point support and balancing device for a steam turbine thrust bearing according to the present invention.

[0016] Figure 2 This is a cross-sectional view of the overall structure of a multi-point support and balancing device for a steam turbine thrust bearing according to this utility model.

[0017] Figure 3 This is a partial structural schematic diagram of a multi-point support and balancing device for a steam turbine thrust bearing according to the present invention.

[0018] Figure 4This is a partial structural cross-sectional view of a multi-point support and balancing device for a steam turbine thrust bearing according to this utility model;

[0019] Figure 5 This is an enlarged structural diagram of point A of a multi-point support and balancing device for a turbine thrust bearing according to this utility model.

[0020] In the diagram: 1. Support base; 2. Mounting hole; 3. Outer fixed housing; 4. Bearing body; 5. Thrust pad; 7. Pad groove; 8. Clamping assembly; 81. Connecting sleeve; 82. Servo motor; 83. Drive shaft; 84. Lead screw; 85. Threaded disc; 86. First rotating seat; 87. V-shaped clamping head; 88. Second rotating seat; 89. Rotating rod; 810. Anti-slip texture; 9. Fixed column. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-5 As shown, a multi-point support balancing device for a steam turbine thrust bearing includes a support base 1. An outer fixed housing 3 is fixedly connected to the upper end of the support base 1. A bearing body 4 is sleeved on the inner side of the outer fixed housing 3. A plurality of fixed columns 9 are fixedly connected to the outer side of the bearing body 4. A plurality of clamping assemblies 8 corresponding to the fixed columns 9 are provided on the outer side of the outer fixed housing 3. The clamping assembly 8 includes a plurality of V-shaped clamping heads 87. The fixed columns 9 are located on the inner side of the plurality of V-shaped clamping heads 87.

[0023] In this embodiment, the clamping assembly 8 further includes a connecting sleeve 81, which is fixedly connected to the outer fixed housing 3. A servo motor 82 is fixedly connected to one end of the connecting sleeve 81, and a transmission shaft 83 is fixedly connected to the output end of the servo motor 82. A lead screw 84 is fixedly connected to the other end of the transmission shaft 83. A threaded disc 85 is threadedly connected to the outer side of the lead screw 84. The threaded disc 85 is slidably connected to the inner side of the connecting sleeve 81. A slider is fixedly connected to the outer side of the threaded disc 85. A groove corresponding to the slider is opened on the inner side of the connecting sleeve 81, and the slider is slidably connected to the inner side of the groove.

[0024] Specifically, firstly, the bearing body 4 is placed inside the outer fixed housing 3. Then, multiple fixing posts 9 on the outside of the bearing body 4 are respectively placed between the V-shaped clamping heads 87 of the multiple clamping components 8 on the outside. Then, the servo motor 82 is turned on, and its output end drives the transmission shaft 83 to rotate, which in turn drives the lead screw 84 to rotate synchronously. This causes the threaded disc 85, which is threadedly connected to the lead screw 84, to slide within the connecting sleeve 81. The slider on the outside of the threaded disc 85 slides synchronously along the groove on the inside of the connecting sleeve 81, improving the stability of the threaded disc 85 when it moves.

[0025] In this embodiment, a plurality of second rotating seats 88 corresponding to V-shaped clamping heads 87 are fixedly connected to the side of the connecting sleeve 81 away from the servo motor 82. One end of the plurality of V-shaped clamping heads 87 is rotatably connected to the inner side of the corresponding second rotating seat 88. The other end of the plurality of V-shaped clamping heads 87 is provided with anti-slip texture 810. The plurality of V-shaped clamping heads 87 are clamped to the outer side of the fixed post 9 by the anti-slip texture 810. One end of the threaded disc 85 is fixedly connected to a plurality of first rotating seats 86 corresponding to V-shaped clamping heads 87. Rotating rods 89 are rotatably connected to the outer side of the plurality of first rotating seats 86. The other end of the plurality of rotating rods 89 is rotatably connected to the corresponding V-shaped clamping head 87.

[0026] Specifically, as the threaded disc 85 moves, the first rotating seat 86 on it pushes the V-shaped clamping head 87 to rotate around the axis outside the connecting sleeve 81 via the rotating rod 89. The V-shaped clamping head 87 clamps the fixed column 9 with the anti-slip texture 810, thereby completing the stable support of the bearing body 4.

[0027] In this embodiment, a bearing body 4 has a bearing groove 7 on its outer side, and a plurality of thrust bearings 5 ​​are provided on the inner side of the bearing groove 7.

[0028] Specifically, multiple thrust pads 5 within the outer pad groove 7 of the bearing body 4 can work together during device operation to further assist the thrust bearing in maintaining balance and stable operation.

[0029] In this embodiment, the upper end of the support base 1 is provided with multiple mounting holes 2, and fixing bolts are provided inside the mounting holes 2. The support base 1 is fixedly connected to the external equipment through the fixing bolts.

[0030] Specifically, the support base 1 is securely connected to the external equipment through the mounting holes 2 on the support base 1 and the fixing bolts on the inside.

[0031] It should be noted that this utility model is a multi-point support and balancing device for a steam turbine thrust bearing. First, the support base 1 is securely connected to the external equipment via the mounting holes 2 and the inner fixing bolts. Then, multiple fixing posts 9 on the outer side of the bearing body 4 are respectively placed inside the V-shaped clamping heads 87 of multiple clamping components 8 on the outer side of the outer fixed housing 3. After the servo motor 82 is turned on, its output end drives the transmission shaft 83 to rotate, thereby driving the lead screw 84 to rotate synchronously. This causes the threaded disc 85, which is threadedly connected to the lead screw 84, to slide within the connecting sleeve 81. The slider on the outside of the threaded disc 85 slides synchronously along the groove on the inside of the connecting sleeve 81, improving the stability of the threaded disc 85 when it moves. As the threaded disc 85 moves, the first rotating seat 86 on it pushes the V-shaped clamping head 87 to rotate around the axis on the outside of the connecting sleeve 81 through the rotating rod 89. The V-shaped clamping head 87 clamps the fixed column 9 with the anti-slip texture 810, thereby completing the stable support for the bearing body 4. At the same time, the multiple thrust pads 5 in the pad groove 7 on the outside of the bearing body 4 work together during the operation of the device to further assist the thrust bearing in maintaining balance and stable operation.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-point support and balancing device for a steam turbine thrust bearing, comprising a support base (1), characterized in that: The upper end of the support base (1) is fixedly connected to an outer fixed housing (3). The inner side of the outer fixed housing (3) is fitted with a bearing body (4). The outer side of the bearing body (4) is fixedly connected to a plurality of fixed posts (9). The outer side of the outer fixed housing (3) is provided with a plurality of clamping assemblies (8) corresponding to the fixed posts (9). The clamping assembly (8) includes a plurality of V-shaped clamping heads (87). The fixed posts (9) are located inside the plurality of V-shaped clamping heads (87).

2. The multi-point support and balancing device for a steam turbine thrust bearing according to claim 1, characterized in that: The clamping assembly (8) further includes a connecting sleeve (81), which is fixedly connected to the outer fixed housing (3). One end of the connecting sleeve (81) is fixedly connected to a servo motor (82), and the output end of the servo motor (82) is fixedly connected to a drive shaft (83). The other end of the drive shaft (83) is fixedly connected to a lead screw (84), and the outer side of the lead screw (84) is threadedly connected to a threaded disc (85). The threaded disc (85) is slidably connected to the inner side of the connecting sleeve (81).

3. The multi-point support and balancing device for a steam turbine thrust bearing according to claim 2, characterized in that: A slider is fixedly connected to the outside of the threaded disc (85), and a groove corresponding to the slider is opened on the inside of the connecting sleeve (81), and the slider is slidably connected to the inside of the groove.

4. The multi-point support and balancing device for a steam turbine thrust bearing according to claim 2, characterized in that: On the side of the connecting sleeve (81) away from the servo motor (82), a plurality of second rotating seats (88) corresponding to the V-shaped clamping heads (87) are fixedly connected. One end of each of the plurality of V-shaped clamping heads (87) is rotatably connected to the inner side of the corresponding second rotating seat (88). The other end of each of the plurality of V-shaped clamping heads (87) is provided with anti-slip texture (810). The plurality of V-shaped clamping heads (87) are clamped on the outside of the fixed post (9) by the anti-slip texture (810).

5. A multi-point support and balancing device for a steam turbine thrust bearing according to claim 4, characterized in that: One end of the threaded disc (85) is fixedly connected to a plurality of first rotating seats (86) corresponding to the V-shaped clamping head (87). Rotating rods (89) are rotatably connected to the outer side of each of the plurality of first rotating seats (86). The other end of each of the plurality of rotating rods (89) is rotatably connected to the corresponding V-shaped clamping head (87).

6. The multi-point support and balancing device for a steam turbine thrust bearing according to claim 1, characterized in that: The bearing body (4) has a bearing groove (7) on its outer side, and a plurality of thrust bearings (5) are provided on the inner side of the bearing groove (7).

7. A multi-point support and balancing device for a steam turbine thrust bearing according to claim 1, characterized in that: The upper end of the support base (1) is provided with multiple mounting holes (2), and the inner side of the mounting holes (2) is provided with fixing bolts. The support base (1) is fixedly connected to the external equipment through the fixing bolts.

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