Device for installing stator slot wedge of steam turbine generator

Abstract

The utility model relates to the technical field of stator slot wedges, in particular to a device for mounting a steam turbine generator stator slot wedge, which comprises a base, a mounting plate is mounted at one end of the top of the base, a chuck is rotatably connected to one side of the mounting plate, one side of the chuck is connected with an output shaft of a first driving motor, and the first driving motor is fixed on the side surface of the mounting plate. A workbench is arranged at the top of a base, a plurality of supporting legs are installed on the two sides of the bottom of the workbench, the bottoms of the supporting legs are connected with the base through adjusting mechanisms, two pairs of limiting plates are symmetrically arranged at one end of the top of the workbench, each limiting plate is arranged in an L shape, a containing groove is formed between the two pairs of limiting plates, and slot wedges are stacked in the containing groove. A first vertical plate is vertically installed at one end of the top of the workbench. The slot wedge can be limited through the limiting plate, and then the slot wedge can be pushed by pushing the push rod through the telescopic mechanism, so that the slot wedge is inserted into the stator wire slot, installation is completed, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of stator slot wedges, in particular to a device for installing stator slot wedges of a steam turbine generator. Background Art

[0002] The stator slot wedge is a fixed component between the motor stator and the coil. The stator slot wedge is embedded in the stator slot opened on the stator. It is usually made of plastic or rubber material and is mainly used to fix the wires wound in the stator slots.

[0003] When installing the existing stator slot wedges, the staff generally hammers the stator slot wedges into the stator wire slots by hand. However, in order to prevent the stator slot wedges from being separated from the stator wire slots during use, the stator slot wedges and the stator wire slots are tightly connected, so it is difficult for the staff to install the stator slot wedges by hammering. In addition, when the stator slot wedges are hammered into the stator wire slots, there will be a gap between the stator slot wedges and the wires in the stator wire slots, which affects the limiting and fixing effect of the stator slot wedges on the wires. Therefore, we propose a device for installing the stator slot wedges of a steam turbine generator. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a device for installing a steam turbine generator stator slot wedge.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for installing a steam turbine generator stator slot wedge is designed, comprising a base, a mounting plate is installed at one end of the top of the base, a chuck is rotatably connected to one side of the mounting plate, one side of the chuck is connected to the output shaft of the first drive motor, and the first drive motor is fixed on the side of the mounting plate;

[0006] A workbench is provided on the top of the base, and a plurality of legs are installed on both sides of the bottom of the workbench, and the bottom of the legs are connected to the base through an adjustment mechanism;

[0007] Two pairs of limit plates are symmetrically arranged at one end of the top of the workbench, each limit plate is arranged in an "L" shape, and a receiving groove is formed between the two pairs of limit plates, and a slot wedge is stacked in the receiving groove;

[0008] A first vertical plate is vertically installed at one end of the top of the workbench, a telescopic mechanism is installed on the side of the first vertical plate, one end of the telescopic mechanism is fixedly connected to a push plate, a push rod is installed on the bottom side of the push plate, a through groove matching the push rod is opened at the bottom end of the side of each limit plate, and one end of the push rod extends into the through groove;

[0009] A movable plate is provided on the top of the workbench on one side away from the first vertical plate, the bottom of the movable plate is connected to a slide rail fixed on the top of the workbench through a slider, a connecting frame is installed on the top of the movable plate, a side of the connecting frame is rotatably connected to an extrusion roller, and a plurality of pressure strips matching the stator slots are equidistantly installed on the side of the extrusion roller;

[0010] A fixed plate is vertically installed at one end of the bottom of the moving plate. The fixed plate extends to one side of the workbench. An adjusting screw is rotatably connected to one side of the workbench. The adjusting screw passes through the fixed plate and cooperates with the fixed plate thread.

[0011] Preferably, the adjustment mechanism includes a pair of second vertical plates fixed to the top of the base, a screw rod is rotatably connected between the two second vertical plates, the screw rod is located below the workbench, one end of the screw rod is connected to a second drive motor, and the second drive motor is fixed to the side of the second vertical plate;

[0012] The two legs away from the second vertical plate are connected via a strip connecting plate, and the screw rod passes through the strip connecting plate and cooperates with the thread of the strip connecting plate.

[0013] Preferably, two guide rails are installed in parallel on the top of the base, and the bottoms of the legs are slidably connected to the guide rails via sliders.

[0014] Preferably, a strip-shaped mounting plate is installed on one side of the bottom of each pair of limiting plates, and the strip-shaped mounting plate is fixed to the base by bolts.

[0015] Preferably, a control box is installed on one side of the top of the base, and a controller inside the control box is connected to the first drive motor, the telescopic mechanism and the second drive motor respectively through wires.

[0016] The design scheme proposed by the utility model has the following beneficial effects during application:

[0017] 1. The slot wedge can be limited by the limiting plate, and the slot wedge can be pushed by the telescopic mechanism to push the push rod, so that the slot wedge is inserted into the stator slot to complete the installation, which is convenient for installation.

[0018] 2. The installed slot wedges can be squeezed by squeezing rollers and pressure strips, so that the slot wedges can be in close contact with the wires wound in the stator slots, thereby improving the limiting and fixing effect of the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3This is a schematic diagram of the workbench structure of the utility model;

[0022] Figure 4 This is a front view of the extrusion roller and stator structure of the utility model.

[0023] In the figure: 1. base; 2. first drive motor; 3. mounting plate; 4. chuck; 5. limit plate; 6. workbench; 7. push plate; 8. first vertical plate; 9. telescopic mechanism; 10. second vertical plate; 11. second drive motor; 12. guide rail; 13. control box; 14. lead screw; 15. support leg; 16. strip connecting plate; 17. push rod; 18. through groove; 19. strip mounting plate; 20. connecting frame; 21. movable plate; 22. fixed plate; 23. adjusting screw; 24. extrusion roller; 25. pressure strip. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-Figure 4 , a device for installing a steam turbine generator stator slot wedge, comprising a base 1, a control box 13 is installed on one side of the top of the base 1, a controller is installed inside the control box 13, and the controller is one of a control mainboard, a host or a PLC logic controller;

[0026] A mounting plate 3 is installed at one end of the top of the base 1, and a chuck 4 is rotatably connected to one side of the mounting plate 3. The chuck 4 is one of a three-jaw chuck, a four-jaw chuck or a five-jaw chuck. One side of the chuck 4 is connected to the output shaft of the first drive motor 2. The first drive motor 2 is fixed on the side of the mounting plate 3. The controller is connected to the first drive motor 2 through a wire. In actual use, the stator of the steam turbine generator can be placed between the chucks 4, and the stator can be clamped and fixed by the chuck 4. After that, the first drive motor 2 can be controlled to work by the controller so that the stator can rotate along a preset angle.

[0027] like Figure 1As shown, a workbench 6 is provided on the top of the base 1, and a plurality of legs 15 are installed on both sides of the bottom of the workbench 6. The bottom of the legs 15 is connected to the base 1 through an adjusting mechanism. The adjusting mechanism includes a pair of second vertical plates 10 fixed on the top of the base 1, and a screw rod 14 is rotatably connected between the two second vertical plates 10. The screw rod 14 is located below the workbench 6, and one end of the screw rod 14 is connected to a second drive motor 11. The second drive motor 11 is fixed on the side of the second vertical plate 10, and the second drive motor 11 is connected to the controller through a wire, wherein the two legs 15 away from the second vertical plate 10 are connected by a strip connecting plate 16, and the screw rod 14 penetrates the strip connecting plate 16 and is threadedly matched with the strip connecting plate 16. In actual use, the second drive motor 11 can be controlled to work through the controller, so that the workbench 6 can be controlled to move horizontally along the base 1 under the action of the screw rod 14, and sufficient space is reserved for the installation of the stator.

[0028] It should be noted that two guide rails 12 are installed in parallel on the top of the base 1, and the bottoms of the legs 15 are slidably connected to the guide rails 12 through sliders. Under the action of the guide rails 12, the workbench 6 can be guided to keep the workbench 6 stable.

[0029] like Figure 1 As shown, two pairs of limit plates 5 are symmetrically provided at one end of the top of the workbench 6, each limit plate 5 is arranged in an "L" shape, and a receiving groove is formed between the two pairs of limit plates 5, and slot wedges are stacked in the receiving groove. During actual use, the slot wedges can be stacked and placed in the receiving groove, and the slot wedges can be limited by the action of the limit plates 5 to avoid position displacement of the slot wedges during installation.

[0030] like Figure 3 As shown, a first vertical plate 8 is vertically installed at one end of the top of the workbench 6, a telescopic mechanism 9 is installed on the side of the first vertical plate 8, one end of the telescopic mechanism 9 is fixedly connected to a push plate 7, a push rod 17 is installed on the bottom side of the push plate 7, and a through groove 18 matching the push rod 17 is opened at the bottom end of the side of each limit plate 5, one end of the push rod 17 extends into the through groove 18, the telescopic mechanism 9 is a kind of cylinder or hydraulic cylinder, and the telescopic mechanism 9 is connected to the controller through a wire. In actual use, the telescopic mechanism 9 can push the push rod 17 to move, so that the push rod 17 pushes the slot wedge located at the bottom of the accommodating slot along the through groove, so that the slot wedge is inserted into the stator slot to complete the installation.

[0031] like Figure 1 and Figure 3As shown, a movable plate 21 is provided on the side of the top of the workbench 6 away from the first vertical plate 8, and the bottom of the movable plate 21 is connected to a slide rail fixed on the top of the workbench 6 through a slider, and a connecting frame 20 is installed on the top of the movable plate 21, and a squeezing roller 24 is rotatably connected to the side of the connecting frame 20, and a plurality of pressure strips 25 matching the stator slots are equidistantly installed on the side of the squeezing roller 24, and a fixed plate 22 is vertically installed at one end of the bottom of the movable plate 21, and the fixed plate 22 extends to one side of the workbench 6, and is rotatably connected to one side of the workbench 6. The adjusting screw 23 passes through the fixed plate 22 and is threadedly matched with the fixed plate 22. In actual use, the squeezing roller 24 will extend into the interior of the stator, and by rotating the adjusting screw 23, the squeezing roller 24 can be moved horizontally, so that the pressure strip 25 moves to a preset position, such as Figure 4 As shown, in the process of installing the slot wedge, the slot wedge will be squeezed by the pressure strip 25 after installation, so that the slot wedge is in close contact with the wire wound on the stator, thereby improving the limiting and fixing effect of the slot wedge on the wire.

[0032] Specifically, when the utility model is used, the generator stator is fixed by the chuck 4, and the lowest stator wire slot is aligned with the through slot 18, and then the second drive motor 11 is controlled by the controller to work, and the second drive motor 11 drives the screw 14 to rotate, so that the workbench 6 moves horizontally along the guide rail 12, and the workbench 6 drives the squeezing roller 24 to move, so that the squeezing roller 24 extends into the stator, and then the adjusting screw 23 is rotated, and the moving plate 21 drives the squeezing roller 24 to move, and the pressure strip 25 on the squeezing roller 24 is moved to the preset position, and then the staff stacks the slot wedges and places them in the receiving slot, and then the controller controls the telescopic mechanism 9 to work, and the telescopic mechanism 9 pushes the push rod 17 Move, the end of the push rod 17 penetrates the usual 18 and pushes the slot wedge located at the bottom of the accommodating slot out of the accommodating slot, and inserts the slot wedge into the stator wire slot. After the insertion is completed, the telescopic mechanism 9 contracts and moves the push rod 17 back to its original position. At the same time, the slot wedge falls under the action of gravity. Then the controller controls the first drive motor 2 to work, and the first drive motor 2 drives the stator to rotate a preset angle, and moves the next stator wire slot to a position aligned with the through slot 18. Then the slot wedge is installed. During the installation process, the rotation of the stator will drive the squeezing roller 24 to rotate, so that the pressure strip 25 on the squeezing roller 24 will squeeze the slot wedge in the stator wire slot, so that the slot wedge is in close contact with the wire in the wire slot, and the installation is completed.

[0033] Furthermore, if Figure 3 As shown, a strip mounting plate 19 is installed on one side of the bottom of each pair of limit plates 5. The strip mounting plate 19 is fixed to the base 1 by bolts. The strip mounting plate 19 can be fixed to the workbench 6 by bolts, and is firmly fixed. The limit plates 5 will not shake during use.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for mounting a stator slot wedge of a steam turbine generator, comprising a base (1), characterized in that: A mounting plate (3) is mounted on one end of the top of the base (1); a chuck (4) is rotatably connected to one side of the mounting plate (3); one side of the chuck (4) is connected to the output shaft of the first drive motor (2); and the first drive motor (2) is fixed on the side of the mounting plate (3); A workbench (6) is provided on the top of the base (1), and a plurality of legs (15) are installed on both sides of the bottom of the workbench (6), and the bottoms of the legs (15) are connected to the base (1) through an adjustment mechanism; Two pairs of limit plates (5) are symmetrically arranged at one end of the top of the workbench (6), each limit plate (5) is arranged in an "L" shape, and a receiving groove is formed between the two pairs of limit plates (5), and a groove wedge is stacked in the receiving groove; A first vertical plate (8) is vertically mounted on one end of the top of the workbench (6), a telescopic mechanism (9) is mounted on the side of the first vertical plate (8), one end of the telescopic mechanism (9) is fixedly connected to a push plate (7), a push rod (17) is mounted on the bottom side of the push plate (7), a through groove (18) matching the push rod (17) is formed at the bottom end of the side of each limiting plate (5), and one end of the push rod (17) extends into the inside of the through groove (18); A movable plate (21) is provided on the top of the workbench (6) at a side away from the first vertical plate (8); the bottom of the movable plate (21) is connected to a slide rail fixed on the top of the workbench (6) via a slider; a connecting frame (20) is installed on the top of the movable plate (21); a side of the connecting frame (20) is rotatably connected to an extrusion roller (24); and a plurality of pressure strips (25) matching the stator slots are equidistantly installed on the side of the extrusion roller (24); A fixed plate (22) is vertically mounted at one end of the bottom of the movable plate (21). The fixed plate (22) extends to one side of the workbench (6). An adjusting screw (23) is rotatably connected to one side of the workbench (6). The adjusting screw (23) passes through the fixed plate (22) and is threadedly engaged with the fixed plate (22).

2. The device for installing a steam turbine generator stator slot wedge according to claim 1, characterized in that: The adjustment mechanism comprises a pair of second vertical plates (10) fixed on the top of the base (1), a screw rod (14) is rotatably connected between the two second vertical plates (10), the screw rod (14) is located below the workbench (6), one end of the screw rod (14) is connected to a second drive motor (11), and the second drive motor (11) is fixed on the side of the second vertical plate (10); The two legs (15) away from the second vertical plate (10) are connected via a strip connecting plate (16), and the screw rod (14) passes through the strip connecting plate (16) and is threadedly engaged with the strip connecting plate (16).

3. The device for installing a steam turbine generator stator slot wedge according to claim 2, characterized in that: Two guide rails (12) are installed in parallel on the top of the base (1), and the bottoms of the legs (15) are slidably connected to the guide rails (12) via sliders.

4. The device for installing a steam turbine generator stator slot wedge according to claim 1, characterized in that: A strip-shaped mounting plate (19) is mounted on one side of the bottom of each pair of limiting plates (5), and the strip-shaped mounting plate (19) is fixed on the base (1) by bolts.

5. The device for installing a steam turbine generator stator slot wedge according to claim 2, characterized in that: A control box (13) is installed on one side of the top of the base (1), and a controller inside the control box (13) is connected to the first drive motor (2), the telescopic mechanism (9) and the second drive motor (11) respectively through wires.

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