Hydro-generator thrust pad maintenance grinding device

Abstract

The utility model discloses a hydro-generator thrust pad maintenance grinding device which comprises a rotating wheel, a through groove is formed in the cross section of the rotating wheel, a thrust pad is installed in the through groove in a matched mode, a rotating shaft is coaxially installed on the rotating wheel, the two ends of the rotating shaft are connected with bearing seats in a rotating mode, and the bearing seats are arranged on the rotating wheel. The bearing seat is installed on the top wall of the overhaul stand, one end of the rotating shaft is in transmission connection with a driving motor, the driving motor is installed on the top wall of the overhaul stand, grinding blocks are arranged on the two sides of the rotating wheel, the grinding blocks are connected with a grinding debugging assembly, and the grinding blocks are used for evenly grinding the side wall of the thrust pad; the grinding device has the advantages that when the rotating wheel rotates, the grinding block can grind and flatten a plurality of thrust pads installed on the rotating wheel at the same time, so that the grinding efficiency is improved, time and labor are saved, the surfaces of the ground thrust pads are more uniform and flatter, and the overhaul speed of a water turbine is improved.

Description

Technical field:

[0001] The utility model belongs to the field of water turbine generators, and in particular relates to a maintenance and grinding device for thrust bearings of water turbine generators. Background technology:

[0002] The thrust bearing is one of the key components of the turbine unit. It is mainly used to balance the residual axial thrust of the unit and determine the dead point of rotor expansion, to ensure the axial clearance between the moving and static blades, thereby preventing dynamic and static friction and collision of the turbine. If the thrust bearing is worn, it will seriously affect the normal operation of the turbine.

[0003] The thrust bearing of the turbine will have different degrees of wear during use. The main reasons are as follows: First, during the normal operation or start-stop process of the turbine, the bearing lubricating oil is suddenly interrupted or the lubricating oil deteriorates, so that the bearing oil film cannot be established or is destroyed, resulting in bearing damage; second, due to debris in the bearing, the center offset of the shaft system, etc., dynamic and static friction occurs between the rotating shaft and the bearing, resulting in bearing damage. During the maintenance of the thrust bearing, it is usually necessary to manually grind the worn surface of the thrust bearing flat, which is time-consuming and labor-intensive. In addition, the surfaces on both sides of the thrust bearing cannot be ground at the same time during manual grinding, which makes the grinding efficiency of the thrust bearing low, and the manual grinding force cannot be kept uniform, resulting in the thrust bearing surface not being ground flat enough, affecting the maintenance speed of the turbine. Utility model content:

[0004] The purpose of the utility model is to provide a hydraulic generator thrust bearing maintenance and grinding device, and overcome the shortcomings of the above-mentioned prior art, which effectively solves the existing problem of low thrust bearing grinding efficiency.

[0005] The content of the utility model: A maintenance and grinding device for thrust bearings of a hydro-turbine generator, comprising a rotating wheel, a through groove being opened on the cross section of the rotating wheel, a thrust bearing being matched and installed in the through groove, a rotating shaft being coaxially installed on the rotating wheel, and both ends of the rotating shaft being rotatably connected to bearing seats, the bearing seats being installed on the top wall of the maintenance platform, one end of the rotating shaft being transmission-connected to a driving motor, the driving motor being installed on the top wall of the maintenance platform, grinding blocks being arranged on both sides of the rotating wheel, the grinding blocks being connected to a grinding and debugging assembly, and the grinding blocks being used for uniformly grinding the side walls of the thrust bearings.

[0006] Furthermore, the grinding and debugging assembly includes a concave plate, which is mounted on the top wall of the inspection table. A bidirectional lead screw is arranged in the groove of the concave plate. Both ends of the bidirectional lead screw are rotatably connected to the two side walls of the concave plate. Support arms are transmission-connected to the two sections of the thread of the bidirectional lead screw. The inner end cross-section of the support arm slides in fit with the groove of the concave plate, and the outer end of the support arm is fixedly connected to the grinding block.

[0007] Furthermore, hand wheels are coaxially mounted on both ends of the bidirectional lead screw.

[0008] Furthermore, a plurality of through grooves are evenly arranged on the cross section of the rotating wheel.

[0009] Furthermore, a screw hole is opened on the circumferential surface of the rotating wheel, the screw hole is communicated with the through groove, a top screw is screwed in the screw hole, and the top screw is used to reinforce the thrust washer.

[0010] Furthermore, a through opening matching the rotating wheel is opened on the top wall of the inspection platform, and the bottom end of the rotating wheel extends into the inner cavity of the inspection platform through the through opening.

[0011] Furthermore, a slag cleaning port is provided on the side wall of the inspection platform, and a switch door is installed on the slag cleaning port.

[0012] Furthermore, an arc-shaped protective cover is arranged above the rotating wheel, a connecting rod is installed at one end of the arc-shaped protective cover, and the outer end of the connecting rod is fixedly connected to the top wall of the concave plate.

[0013] The beneficial effects of the utility model are as follows: when the impeller rotates, the grinding block can grind and flatten several thrust pads installed on the impeller at the same time, thereby improving the grinding efficiency, saving time and labor, and the surface of the thrust pads after grinding is more uniform and flat, thereby improving the maintenance speed of the turbine. Description of the drawings:

[0014] Figure 1 It is a partial cross-sectional view of the main view of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the top view of the utility model;

[0016] In the figure, 1 is a rotating wheel, 2 is a through slot, 3 is a thrust washer, 4 is a rotating shaft, 5 is a bearing seat, 6 is a maintenance platform, 7 is a driving motor, 8 is a grinding block, 9 is a concave plate, 10 is a bidirectional screw, 11 is a supporting arm, 12 is a hand wheel, 13 is a top screw, 14 is a through port, 15 is a switch door, 16 is an arc-shaped protective cover, and 17 is a connecting rod. Specific implementation method:

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention is now described with reference to the accompanying drawings:

[0018] like Figure 1 to Figure 2As shown, a hydraulic generator thrust bearing maintenance grinding device comprises a runner 1, a through slot 2 is provided on the cross section of the runner 1, a thrust bearing 3 is matched and installed in the through slot 2, a rotating shaft 4 is coaxially installed on the runner 1, and both ends of the rotating shaft 4 are rotatably connected to the bearing seat 5, the bearing seat 5 is installed on the top wall of the maintenance platform 6, one end of the rotating shaft 4 is transmission-connected to the driving motor 7, and the driving motor 7 is installed on the top wall of the maintenance platform 6, grinding blocks 8 are arranged on both sides of the runner 1, and the grinding blocks 8 are connected to the grinding and debugging components, and the grinding blocks 8 are used to uniformly grind the side of the thrust bearing 3. Wall, the grinding and debugging assembly includes a concave plate 9, which is installed on the top wall of the inspection platform 6, and a bidirectional screw 10 is arranged in the groove of the concave plate 9, and the two ends of the bidirectional screw 10 are rotatably connected to the two side walls of the concave plate 9, and support arms 11 are transmission-connected to the two sections of the thread of the bidirectional screw 10, and the inner end cross-section of the support arm 11 is slidably fitted in the groove of the concave plate 9, and the outer end of the support arm 11 is fixedly connected to the grinding block 8, and hand wheels 12 are coaxially installed at both ends of the bidirectional screw 10, and a plurality of through grooves 2 are evenly opened on the cross-section of the rotating wheel 1.

[0019] Specifically, the grinding block 8 can grind and level a plurality of thrust pads 3 mounted on the runner 1 at the same time, thereby improving the grinding efficiency.

[0020] During actual use, first, multiple thrust washers 3 are placed in sequence in the through slots 2 opened by the rotating wheel 1. At this time, the driving motor 7 is started to drive the rotating shaft 4 to rotate, and the rotating shaft 4 drives the rotating wheel 1 to select. At this time, the grinding blocks 8 set on both sides of the rotating wheel 1 evenly grind the two side walls of the thrust washers 3; before grinding, the hand wheel 12 can be rotated to make the two support arms 11 driven on the bidirectional screw 10 approach or move away from each other, thereby adjusting the pressure applied by the grinding block 8 to the thrust washers 3 to adjust the grinding force. For example, when the surface of the grinding block 8 is severely worn, the two support arms 11 can be brought close to each other, so that the pressure applied by the grinding block 8 to the thrust washers 3 is increased, thereby improving the grinding effect.

[0021] like Figure 1 to Figure 2As shown, a thrust washer maintenance and grinding device for a hydro-turbine generator is provided, wherein a screw hole is provided on the circumferential surface of the runner 1, the screw hole is connected to the through groove 2, a top screw 13 is screwed in the screw hole, the top screw 13 is used to reinforce the thrust washer 3, a through opening 14 matching the runner 1 is provided on the top wall of the maintenance platform 6, the bottom end of the runner 1 extends into the inner cavity of the maintenance platform 6 through the through opening 14, a slag cleaning port is provided on the side wall of the maintenance platform 6, a switch door 15 is installed on the slag cleaning port, an arc-shaped protective cover 16 is provided above the runner 1, a connecting rod 17 is installed at one end of the arc-shaped protective cover 16, and the outer end of the connecting rod 17 is fixedly connected to the top wall of the concave plate 9.

[0022] Specifically, the grinding debris can be dropped into the inner cavity of the maintenance platform 6 through the opening 14 for centralized storage, thus avoiding pollution of the working environment.

[0023] During actual use, the rotating top screw 13 can fix the thrust washer 3 placed in the through groove 2; the debris generated during the grinding process falls into the inner cavity of the maintenance table 6 through the through opening 14 for centralized storage, and the accumulated debris can be cleared away by opening the switch door 15; during the grinding process, the arc-shaped protective cover 16 can prevent the debris from splashing randomly, thereby protecting on-site workers from injury.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic generator thrust bearing maintenance and grinding device, characterized in that: The invention comprises a rotating wheel (1), a through groove (2) is provided on the cross section of the rotating wheel (1), a thrust washer (3) is matched and installed in the through groove (2), a rotating shaft (4) is coaxially installed on the rotating wheel (1), bearing seats (5) are rotatably connected at both ends of the rotating shaft (4), the bearing seats (5) are installed on the top wall of the maintenance platform (6), one end of the rotating shaft (4) is transmission-connected to a driving motor (7), the driving motor (7) is installed on the top wall of the maintenance platform (6), grinding blocks (8) are arranged on both sides of the rotating wheel (1), the grinding blocks (8) are connected to a grinding and debugging assembly, and the grinding blocks (8) are used to evenly grind the side walls of the thrust washer (3).

2. A hydraulic generator thrust bearing maintenance and grinding device according to claim 1, characterized in that: The grinding and debugging assembly comprises a concave plate (9), wherein the concave plate (9) is mounted on the top wall of the inspection platform (6), a bidirectional lead screw (10) is arranged in the groove of the concave plate (9), the two ends of the bidirectional lead screw (10) are rotatably connected to the two side walls of the concave plate (9), and support arms (11) are drivingly connected to the two sections of the thread of the bidirectional lead screw (10), the inner end cross section of the support arm (11) is slidably fitted in the groove of the concave plate (9), and the outer end of the support arm (11) is fixedly connected to the grinding block (8).

3. A hydraulic generator thrust bearing maintenance and grinding device according to claim 2, characterized in that: Hand wheels (12) are coaxially mounted on both ends of the bidirectional lead screw (10).

4. A hydraulic generator thrust bearing maintenance and grinding device according to claim 1, characterized in that: A plurality of through grooves (2) are evenly arranged on the cross section of the rotating wheel (1).

5. A hydraulic generator thrust bearing maintenance and grinding device according to claim 4, characterized in that: A screw hole is provided on the circumferential surface of the rotating wheel (1), the screw hole is connected to the through groove (2), a top screw (13) is screwed into the screw hole, and the top screw (13) is used to reinforce the thrust washer (3).

6. A hydraulic generator thrust bearing maintenance and grinding device according to claim 1, characterized in that: A through opening (14) matching the rotating wheel (1) is provided on the top wall of the inspection platform (6), and the bottom end of the rotating wheel (1) extends into the inner cavity of the inspection platform (6) through the through opening (14).

7. A hydraulic generator thrust bearing maintenance and grinding device according to claim 6, characterized in that: A slag cleaning port is provided on the side wall of the inspection platform (6), and a switch door (15) is installed on the slag cleaning port.

8. The hydraulic generator thrust bearing maintenance and grinding device according to claim 2 is characterized in that: An arc-shaped protective cover (16) is arranged above the rotating wheel (1), a connecting rod (17) is installed at one end of the arc-shaped protective cover (16), and the outer end of the connecting rod (17) is fixedly connected to the top wall of the concave plate (9).

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