Hydroelectric generator stator core joint shape control structure

Abstract

The utility model discloses a kind of water turbine generator stator core joint seam control shape structure, it belongs to generator stator production technical field. Including motor shell and first L type board, the outside of motor shell is provided with first L type board, the outside of first L type board is provided with second L type board, one side of first L type board and second L type board is movably provided with connecting column, the other side of second L type board is provided with integrated frame, the inside of integrated frame is symmetrically provided with clamping buckle, and one end of two groups of clamping buckle close to each other is provided with connecting shaft, and clamping buckle is movably connected by connecting shaft, the connecting shaft is fixedly connected with integrated frame, the surface of connecting shaft is provided with torsion spring. The utility model not only realizes multistage limit to prevent motor stator gap too large, facilitates the joint seam control shape between the gap of two adjacent motor stators, and improve the convenience of motor stator joint seam control shape.

Description

Technical Field

[0001] This utility model relates to the field of generator stator manufacturing technology, specifically to a joint control structure for the stator core of a hydro-generator. Background Technology

[0002] The stator is a crucial component of motors such as generators and starters. It consists of three main parts: the stator core, stator windings, and the frame. The stator's primary function is to generate a rotating magnetic field, while the rotor's main function is to be cut by magnetic lines of force within this rotating magnetic field, thereby generating (outputting) current. In the production of hydroelectric generators, due to their large size, the stator is often assembled from multiple stator assemblies into a single core. However, during assembly, it is essential to ensure that the gaps between the stator assemblies meet production standards. Therefore, gap control is required during production. To better control the gaps of the stator core, a gap control structure for hydroelectric generator stator core is proposed.

[0003] As disclosed in the authorization announcement CN114257001B, a generator stator encapsulation structure and its installation method include an iron core and a shell. The shell is sleeved on the outside of the iron core. A limiting mechanism is provided between the outside of the iron core and the inner wall of the shell. Several sliding grooves are opened on the inner surface of the iron core. Each of the sliding grooves is provided with a connecting block. The connecting block is connected to the iron core. A left slider is provided on one side of the connecting block. A left tooth block is connected to the bottom of the left slider. An upper insert plate is connected to the top surface of the left tooth block near the connecting block. A left insertion hole is opened on the bottom surface of the left tooth block near the connecting block. A right slider is provided on the other side of the connecting block. A right tooth block is connected to the bottom of the right slider. A lower insert plate is connected to the bottom surface of the right tooth block near the connecting block.

[0004] Although it allows for repair or replacement by removing only the damaged left and right tooth blocks without dismantling the entire iron core, saving money and making the replacement process simple and easy to operate.

[0005] However, the existing joint control structure does not solve the problem that it is not conducive to multi-level limiting to prevent the motor stator gap from being too large during use, nor is it conducive to joint control of the gap between two sets of adjacent motor stators, thus affecting the convenience of joint control of the motor stator. Utility Model Content

[0006] The purpose of this utility model is to provide a joint control structure for the stator core of a hydro-generator, so as to solve the problem in the background art that the joint control structure is not convenient for multi-level limiting to prevent the motor stator gap from being too large, and is not conducive to joint control of the gap between two sets of adjacent motor stators, thus affecting the convenience of joint control of the motor stator.

[0007] To address the technical problems mentioned in the background section, some embodiments of this application provide a turbine generator stator core joint control structure, including a motor housing and a first L-shaped plate. The first L-shaped plate is disposed on the outside of the motor housing, and a second L-shaped plate is disposed on the outside of the first L-shaped plate. A connecting column is movably disposed on one side of both the first and second L-shaped plates, and an integrated frame is disposed on the other side of the second L-shaped plate. Clamps are symmetrically disposed inside the integrated frame, and a connecting shaft is disposed at one end of the two sets of clamps that are close to each other. The clamps are movably connected through the connecting shaft, and the connecting shaft is fixedly connected to the integrated frame. A torsion spring is disposed on the surface of the connecting shaft.

[0008] Furthermore, the two ends of the torsion spring are respectively connected to two sets of clips, and a limit head is provided between the two sets of clips.

[0009] Furthermore, a connecting rod is provided on the side wall of the limiting round head, and the connecting rod extends to the outside of the first L-shaped plate. Two sets of buckles are provided on the side wall of the first L-shaped plate.

[0010] Furthermore, each of the buckles is provided with a hinge shaft at one end near the first L-shaped plate, and the buckle is movably connected to the first L-shaped plate through the hinge shaft.

[0011] Furthermore, the surface of the connecting rod is provided with a spring, and the two ends of the spring are respectively connected to the first L-shaped plate and the connecting rod, and the buckle is slidably connected to the connecting rod.

[0012] Furthermore, the motor housing is provided with multiple sets of stator bodies at equal intervals, and the first L-shaped plate and the second L-shaped plate are movably connected to the stator bodies through connecting columns.

[0013] Furthermore, an arc-shaped limiting groove is provided on the inner wall of the motor housing, and the arc-shaped limiting groove is a T-shaped design.

[0014] Furthermore, multiple sets of straight limiting grooves with equal spacing are provided on the inner wall of the motor housing on one side of the arc-shaped limiting groove, and the straight limiting grooves are connected to the arc-shaped limiting groove.

[0015] Furthermore, limit blocks are provided on the outer wall of the stator body, and the limit blocks are T-shaped, with the length of the limit block equal to the width of the arc-shaped limit groove.

[0016] Furthermore, the limiting block is slidably connected to the straight limiting groove, and the limiting block is also slidably connected to the arc-shaped limiting groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the joint control structure not only realizes multi-level limiting to prevent the motor stator gap from being too large, and facilitates joint control of the gap between two sets of adjacent motor stators, but also improves the convenience of joint control of the motor stator.

[0018] Due to the large size of hydro-generators, stator installation is often done in groups. When assembling the stator core, first take one set of stator bodies, align the limiting block with the straight limiting groove, and let the stator body drive the limiting block to slide within the straight limiting groove. Once the limiting block moves into the arc-shaped limiting groove, rotate the stator body, causing the limiting block to rotate within the arc-shaped limiting groove, thus locking the limiting block into the arc-shaped limiting groove. This allows the set of stator bodies to be installed inside the generator housing. Then, install the next adjacent set of stator bodies in the same manner. To prevent the two sets of stator bodies from shifting and causing excessive gaps, the first L-shaped plate and the second L-shaped plate are welded to the surface of the stator body via connecting posts. As the stator body moves, the first L-shaped plate moves via the connecting posts, which in turn moves the connecting rod and the limiting round head, allowing the limiting round head to insert into the integrated frame. The limiting round head then causes the two sets of clamps to open around the connecting shaft. Once the limiting round head is fully inside the two sets of clamps, the torsion springs, in their elastic engagement, cause the two sets of clamps to open. The clamp rotates and resets around the connecting shaft, thus locking the limiting head inside the clamp. Then, rotating the clamp causes it to rotate around the hinge shaft, locking it at the end of the connecting rod and moving the connecting rod. The connecting rod compresses the spring, which provides a counterforce, pulling the connecting rod and the limiting head, which in turn pulls the second L-shaped plate. The second L-shaped plate then pulls the corresponding stator body, while the spring limits the connecting rod, keeping it in its current state. To prevent the connecting rod from detaching from the integrated frame, after the connecting rod is fixed between the first L-shaped plate and the second L-shaped plate, the first L-shaped plate and the second L-shaped plate drive the corresponding stator body to maintain the corresponding gap distance, avoiding displacement of the stator body and causing the gap between the two sets of stator bodies to be too large. This completes the joint control of the stator body, realizes multi-level limiting to prevent the motor stator gap from being too large, facilitates joint control of the gap between two sets of adjacent motor stators, and improves the convenience of joint control of the motor stator. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0020] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0021] In the attached diagram:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a frontal cross-sectional view of the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the first and second L-shaped plates of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the motor housing and stator body of this utility model;

[0026] Figure 5 This is a front cross-sectional view of the integrated frame of this utility model.

[0027] Figure 6 This is a three-dimensional perspective structural diagram of the integrated frame of this utility model.

[0028] Figure label:

[0029] 1. Motor housing; 2. Stator body; 3. First L-shaped plate; 4. Second L-shaped plate; 5. Connecting column; 6. Limiting block; 7. Arc-shaped limiting groove; 8. Straight limiting groove; 9. Buckle; 10. Spring; 11. Hinge shaft; 12. Clamp; 13. Connecting shaft; 14. Limiting round head; 15. Connecting rod; 16. Torsion spring; 17. Integrated frame. Detailed Implementation

[0030] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0031] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] Please see Figures 1 to 6 This utility model provides an embodiment of a hydro-generator stator core joint control structure, including a motor housing 1 and a first L-shaped plate 3. The first L-shaped plate 3 is disposed on the outside of the motor housing 1, and a second L-shaped plate 4 is disposed on the outside of the first L-shaped plate 3. A connecting post 5 is movably disposed on one side of both the first L-shaped plate 3 and the second L-shaped plate 4. An integrated frame 17 is disposed on the other side of the second L-shaped plate 4. Clamps 12 are symmetrically disposed inside the integrated frame 17, and a connecting shaft 13 is disposed at one end of each set of clamps 12 that is close to each other. The clamps 12 are movably connected through the connecting shaft 13. The connecting shaft 13 is fixedly connected to the integrated frame 17. A torsion spring 16 is disposed on the surface of the connecting shaft 13, and the two ends of the torsion spring 16 are respectively connected to the two sets of clamps 12. The two sets of clamps 12 are connected, and a limiting round head 14 is provided between them. A connecting rod 15 is provided on the side wall of the limiting round head 14, and the connecting rod 15 extends to the outside of the first L-shaped plate 3. Two sets of buckles 9 are provided on the side wall of the first L-shaped plate 3. A hinge shaft 11 is provided at the end of each buckle 9 near the first L-shaped plate 3, and the buckle 9 is movably connected to the first L-shaped plate 3 through the hinge shaft 11. A spring 10 is provided on the surface of the connecting rod 15, and the two ends of the spring 10 are respectively connected to the first L-shaped plate 3 and the connecting rod 15. The buckle 9 is slidably connected to the connecting rod 15. Multiple sets of stator bodies 2 with equal spacing are provided inside the motor housing 1, and the first L-shaped plate 3 and the second L-shaped plate 4 are movably connected to the stator body 2 through the connecting post 5.

[0035] An arc-shaped limiting groove 7 is provided on the inner wall of the motor housing 1, and the arc-shaped limiting groove 7 is a T-shaped design. On one side of the arc-shaped limiting groove 7, multiple sets of straight limiting grooves 8 are provided on the inner wall of the motor housing 1 at equal intervals, and the straight limiting grooves 8 are connected to the arc-shaped limiting groove 7.

[0036] Limiting blocks 6 are provided on the outer wall of the stator body 2. The limiting blocks 6 are T-shaped and the length of the limiting blocks 6 is equal to the width of the arc-shaped limiting groove 7. The limiting blocks 6 are slidably connected to the straight limiting groove 8 and the arc-shaped limiting groove 7.

[0037] Because hydro-generators are relatively large, stator installation is often done in groups. When assembling the stator core, first take one set of stator bodies 2, align the limiting block 6 with the straight limiting groove 8, and let the stator body 2 drive the limiting block 6 to slide within the straight limiting groove 8. When the limiting block 6 moves into the arc-shaped limiting groove 7, rotate the stator body 2, causing the limiting block 6 to rotate within the arc-shaped limiting groove 7, thus locking the limiting block 6 into the arc-shaped limiting groove 7. This allows the set of stator bodies 2 to be installed inside the motor housing 1. Then, install the next adjacent set of stator bodies 2 in the same way. To avoid two sets of stators... The stator body 2 shifts, causing an excessively large gap. The first L-shaped plate 3 and the second L-shaped plate 4 are welded to the surface of the stator body 2 via connecting posts 5. As the stator body 2 moves, the first L-shaped plate 3 moves via the connecting posts 5. The first L-shaped plate 3 then moves the connecting rod 15 and the limiting round head 14, causing the limiting round head 14 to insert into the integrated frame 17. The limiting round head 14 then causes the two sets of clamps 12 to open around the connecting shaft 13. Once the limiting round head 14 is fully inside the two sets of clamps 12, the torsion spring 16, in its elastic engagement, causes the two sets of clamps 12 to open... The connecting shaft 13 is rotated to reset, thereby locking the limiting round head 14 inside the clamp 12. Then, the clamp 9 is rotated, and the clamp 9 rotates about the hinge shaft 11, causing the clamp 9 to rotate and lock at the end position of the connecting rod 15, thus moving the connecting rod 15. The connecting rod 15 compresses the spring 10, and the spring 10 provides a reverse force on the connecting rod 15, pulling the connecting rod 15 and the limiting round head 14, which in turn pulls the second L-shaped plate 4. The second L-shaped plate 4 pulls the corresponding stator body 2, while the spring 10 limits the connecting rod 15, making the connecting rod 15... The connecting rod 15 remains in its current state to prevent it from detaching from the integrated frame 17. After the connecting rod 15 is fixed between the first L-shaped plate 3 and the second L-shaped plate 4, the first L-shaped plate 3 and the second L-shaped plate 4 drive the corresponding stator body 2 to maintain the corresponding gap distance, thus preventing the stator body 2 from shifting and causing the gap between the two sets of stator bodies 2 to be too large. This completes the joint control of the stator body 2, realizing multi-level limiting to prevent the motor stator gap from being too large, facilitating the joint control of the gap between two sets of adjacent motor stators, and improving the convenience of joint control of the motor stator.

[0038] Working principle: First, take a set of stator bodies 2, align the limiting block 6 with the straight limiting groove 8, and let the stator body 2 drive the limiting block 6 to slide within the straight limiting groove 8. When the limiting block 6 moves into the arc-shaped limiting groove 7, the stator body 2 drives the limiting block 6 to rotate inside the arc-shaped limiting groove 7, locking the limiting block 6 within the arc-shaped limiting groove 7, thus installing the set of stator bodies 2 inside the motor housing 1. The first L-shaped plate 3 and the second L-shaped plate 4 are then welded to the surface of the stator body 2 via connecting posts 5. As the stator body 2 moves, the stator body 2 drives the first L-shaped plate 3 to move via the connecting column 5. The first L-shaped plate 3 then drives the connecting rod 15 and the limiting round head 14 to move, so that the limiting round head 14 is inserted into the integrated frame 17. The limiting round head 14 drives the two sets of clamps 12 to open around the connecting shaft 13. When the limiting round head 14 is fully inserted into the two sets of clamps 12, under the elastic cooperation of the torsion spring 16, the torsion spring 16 drives the two sets of clamps 12 to rotate and reset around the connecting shaft 13. The limiting round head 14 is secured inside the clip 12. The clip 9 rotates around the hinge shaft 11, causing the clip 9 to rotate and engage at the end position of the connecting rod 15, thus moving the connecting rod 15. The connecting rod 15 compresses the spring 10, which in turn pulls the connecting rod 15 and the limiting round head 14, thereby pulling the second L-shaped plate 4. The second L-shaped plate 4 then pulls the corresponding stator body 2. Simultaneously, the spring 10 limits the connection rod 15, keeping it in place. Maintaining the current state prevents the connecting rod 15 from detaching from the integrated frame 17. After the connecting rod 15 is fixed between the first L-shaped plate 3 and the second L-shaped plate 4, the first L-shaped plate 3 and the second L-shaped plate 4 drive the corresponding stator body 2 to maintain the corresponding gap distance, avoiding displacement of the stator body 2 and causing the gap between the two sets of stator bodies 2 to be too large, thereby completing the joint control of the stator body 2. The above is the complete usage of the joint control structure for the stator core of the hydro-generator.

[0039] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A joint control structure for the stator core of a hydro-generator, comprising a generator housing (1) and a first L-shaped plate (3), characterized in that: The motor housing (1) is provided with a first L-shaped plate (3) on the outside, and a second L-shaped plate (4) is provided on the outside of the first L-shaped plate (3). A connecting post (5) is movably provided on one side of both the first L-shaped plate (3) and the second L-shaped plate (4). An integrated frame (17) is provided on the other side of the second L-shaped plate (4). Clips (12) are symmetrically provided inside the integrated frame (17). A connecting shaft (13) is provided at one end of the two sets of clips (12) that are close to each other. The clips (12) are movably connected through the connecting shaft (13). The connecting shaft (13) is fixedly connected to the integrated frame (17). A torsion spring (16) is provided on the surface of the connecting shaft (13).

2. The hydro-generator stator core joint control structure according to claim 1, characterized in that: The two ends of the torsion spring (16) are respectively connected to two sets of clips (12), and a limit head (14) is provided between the two sets of clips (12).

3. The hydro-generator stator core joint control structure according to claim 2, characterized in that: The limiting round head (14) has a connecting rod (15) on its side wall, and the connecting rod (15) extends to the outside of the first L-shaped plate (3). The first L-shaped plate (3) has two sets of buckles (9) on its side wall.

4. The hydro-generator stator core joint control structure according to claim 3, characterized in that: Each of the buckles (9) is provided with a hinge shaft (11) at one end near the first L-shaped plate (3), and the buckles (9) are movably connected to the first L-shaped plate (3) through the hinge shaft (11).

5. The hydro-generator stator core joint control structure according to claim 4, characterized in that: The surface of the connecting rod (15) is provided with a spring (10), and the two ends of the spring (10) are respectively connected to the first L-shaped plate (3) and the connecting rod (15), and the buckle (9) is slidably connected to the connecting rod (15).

6. The hydro-generator stator core joint control structure according to claim 5, characterized in that: The motor housing (1) is provided with multiple sets of stator bodies (2) at equal intervals inside, and the first L-shaped plate (3) and the second L-shaped plate (4) are movably connected to the stator bodies (2) through connecting columns (5).

7. The hydro-generator stator core joint control structure according to claim 6, characterized in that: The inner wall of the motor housing (1) is provided with an arc-shaped limiting groove (7), and the arc-shaped limiting groove (7) is a T-shaped design.

8. The hydro-generator stator core joint control structure according to claim 7, characterized in that: On the inner wall of the motor housing (1) on one side of the arc-shaped limiting groove (7), there are multiple sets of straight limiting grooves (8) with equal spacing, and the straight limiting grooves (8) are connected to the arc-shaped limiting groove (7).

9. The hydro-generator stator core joint control structure according to claim 8, characterized in that: Limiting blocks (6) are provided on the outer wall of the stator body (2), and the limiting blocks (6) are T-shaped, and the length of the limiting blocks (6) is equal to the width inside the arc-shaped limiting groove (7).

10. The hydro-generator stator core joint control structure according to claim 9, characterized in that: The limiting block (6) is slidably connected to the straight limiting groove (8), and the limiting block (6) is slidably connected to the arc-shaped limiting groove (7).

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