Hydro-generator stator auxiliary inlaying device and use method

Abstract

According to the hydro-generator stator auxiliary inlaying device and the use method, through mechanical combination of the sliding mechanism, the circumferential moving mechanism and the lifting pulley block, an operator can easily lift a stator bar to a designated position and carry out accurate inlaying, the labor intensity of manual carrying is reduced, the working efficiency is improved, and the working efficiency is improved. Meanwhile, the accuracy of the inlaying position is also ensured; the auxiliary embedding device for the stator of the hydraulic generator comprises a stand column, the bottom of the stand column is fixedly connected to a fixed base, and first rolling wheels are arranged on the two sides of the bottom of the fixed base; one end of a horizontal frame is welded to one side of the top of the stand column, and a circumferential moving mechanism is fixed to the other end of the horizontal frame. A sliding mechanism is arranged on the horizontal frame, and the bottom of the sliding mechanism is connected with a lifting pulley block.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic generator stator wire rod installation, and in particular to a hydraulic generator stator auxiliary embedding device. Background Art

[0002] Generators are core equipment in power systems, and their removal and reinstallation processes require highly specialized technology and equipment support. Stators are an important part of generators, and their base welding, lamination, and wire rod inlaying are directly related to the performance and operating stability of the generator.

[0003] Especially the stator wire bar offline work, this step is not only labor-intensive but also technically demanding. There are usually a large number of wire bar slots on the stator core, such as the common 540 slots, which need to be inlaid with a corresponding number of stator wire bars. And the stator wire bars are usually heavy due to the material and size, which increases the difficulty of manual operation. And the installation accuracy is high: the wire bars must be accurately embedded in the slots to ensure the electrical performance and operating stability of the generator.

[0004] The traditional manual inlay method is not only inefficient, but also difficult to ensure the accuracy of each wire rod. In addition, manual operation is inefficient and has high safety risks. Due to the heavy weight of the wire rod, there are great safety risks during manual operation. Manual operation is easily affected by human factors, resulting in unstable wire rod inlay quality.

[0005] In view of the difficulty in inserting the stator bars into the stator core slots, it is particularly important to design a special tool to assist in the inserting. Summary of the invention

[0006] The present invention aims to address the technical defects of the prior art and provide a stator auxiliary embedding device for a hydro-turbine generator and a method for using the device. Through the mechanical combination of a sliding mechanism, a circumferential moving mechanism and a lifting pulley block, an operator can easily lift the stator wire rod to a specified position and embed it accurately, thereby reducing the labor intensity of manual handling, improving work efficiency, and also ensuring the accuracy of the embedding position.

[0007] The present invention provides the following technical solution: a stator auxiliary embedding device for a hydro-turbine generator, comprising a column, the bottom of which is fixedly connected to a fixed base, and first rollers are arranged on both sides of the bottom of the fixed base; one end of a horizontal frame is welded to one side of the top of the column, and a circumferential moving mechanism is fixed to the other end of the horizontal frame; a sliding mechanism is arranged on the horizontal frame, and the bottom of the sliding mechanism is connected to a lifting pulley group.

[0008] Preferably, reinforcing brackets are respectively arranged on both sides of the column, one end of the reinforcing brackets is respectively fixed on both sides of the column, and the other end of the reinforcing brackets is respectively fixed on both sides of the fixed base.

[0009] Preferably, the sliding mechanism comprises a track pulley and a fixed bracket, the track pulley is fixed to the top of the fixed bracket by bolts, and the track pulley can slide on the horizontal frame.

[0010] Preferably, the lifting pulley group includes a fixed pulley, a fixed pulley bracket, a movable pulley, a movable pulley bracket, a hook and a nylon rope. The fixed pulley is fixed to the lower part of the fixed bracket through the fixed pulley bracket, the movable pulley bracket is fixed to the outer side of the movable pulley, the bottom of the movable pulley bracket is connected to the hook, and the movable pulley is connected to the fixed pulley by a nylon rope for lifting.

[0011] Preferably, the circumferential movement mechanism includes slot frames on both sides, a supporting slot frame is fixedly arranged between the slot frames on both sides, a movable slot frame is vertically arranged on the supporting slot frame, a second roller is arranged at the bottom of both ends of the movable slot frame, and a limit frame is also arranged between the slot frames on both sides, the limit frame is located at the lower side of the supporting slot frame, and the slot frames on both sides are clamped on the ring plate on the stator base.

[0012] Preferably, the number of the horizontal frames is two, the two horizontal frames are arranged up and down, and the sliding mechanism is arranged on the lower horizontal frame.

[0013] Preferably, the distance between the two side trough frames is 0.7m, the length of the trough frames is set to 0.4-0.45m, and the length of the movable trough frames is set to 0.4-0.45m.

[0014] Preferably, the height of the column is 3.67m, and the length of the fixed base is 1m.

[0015] Preferably, the nylon rope has a diameter of 10 mm and a length of 30 m.

[0016] Preferably, the method for using the auxiliary embedding device for the stator of a hydro-generator comprises performing the following steps:

[0017] Step (1), crane positioning: the crane positions the device in the corresponding slot, and the circumferential moving mechanism is clamped on the upper ring plate of the stator base;

[0018] Step (2), lifting the stator wire rod: lifting the pulley block to pull the stator wire rod to a fixed height;

[0019] Step (3), stator bar embedding: pull the sliding mechanism to move toward the stator bar slot, and the staff completes the embedding of a stator bar;

[0020] Step (4), push the circumferential moving mechanism to the next installation slot, and repeat steps (1) to (3) until all stator bars are embedded.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The invention discloses a hydro-generator stator auxiliary embedding device, which is characterized by its sophisticated mechanical structure design, and aims to achieve efficient and accurate embedding of stator wire rods through the coordinated action of a column, a horizontal frame, a sliding mechanism, a circumferential moving mechanism and a lifting pulley block;

[0023] The column and the fixed base, as the main supporting structure of the entire device, are firmly fixed to the fixed base at the bottom. The fixed base not only provides stable support, but also enhances the overall mobility of the device through the first rollers arranged on both sides of the bottom, which is convenient for flexible adjustment between different working positions.

[0024] The horizontal frame is welded to one side of the top of the column to form a guide for adjusting the horizontal position of the stator wire rod. The other end of the horizontal frame is fixed with a circumferential movement mechanism, which allows circumferential movement in the horizontal plane to meet the needs of wire rod embedding at different positions of the stator core.

[0025] The sliding mechanism is arranged on the horizontal frame and can slide freely in the horizontal direction, thereby realizing the precise positioning of the stator bars on the horizontal plane;

[0026] The lifting pulley block is connected to the bottom of the sliding mechanism and is a key component for lifting and positioning the wire rods. Through the precise control of the pulley block, the stator wire rods can be lifted and lowered smoothly in the vertical direction, ensuring that the wire rods can be accurately embedded in the slots of the stator core.

[0027] When stator wire rods need to be inserted, the circumferential moving mechanism is first used to adjust the target position so that the lifting pulley block is directly facing the slot to be inserted in the stator core;

[0028] Then, start the lifting pulley block to smoothly lift the stator wire bar to the predetermined height;

[0029] Finally, the wire rod is further precisely aligned with the slot through fine adjustment of the sliding mechanism and then embedded in the slot. During the whole process, the mechanical combination ensures the stability and accuracy of the operation, greatly improving the inlay efficiency.

[0030] The following beneficial effects are generally produced:

[0031] Improve the embedding efficiency: through mechanized operation, it reduces manual intervention and waiting time, and significantly improves the embedding speed of stator bars;

[0032] Enhanced precision: The mechanical combination design ensures the precise alignment and insertion of the wire rod into the slot, reducing errors and rework rates;

[0033] Reduced safety risks: Reduced need for manual handling and lifting of heavy objects, reducing the risk of operator injury;

[0034] Improve overall performance: Precise inlay ensures the electrical performance and operating stability of the generator, helping to extend the service life of the equipment and reduce maintenance costs;

[0035] In practical applications, this auxiliary inlay device can help workers complete the inlay work of stator wire bars more safely and efficiently, especially in the installation process of large hydro-turbine generators. Due to the large size of the stator and the heavy weight of the wire bars, the use of this device can significantly improve construction efficiency and safety. In summary, the stator auxiliary inlay device of the hydro-turbine generator, with its unique mechanical structure design and efficient and precise operation process, provides strong support for the stator wire bar inlay work during the generator reinstallation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0037] Figure 2 for Figure 1 Schematic diagram of local structure;

[0038] Figure 3 It is a structural schematic diagram of the circumferential movement mechanism.

[0039] Description of reference numerals:

[0040] 1. Column; 2. Strengthening bracket; 3. Fixed base; 4. First roller; 5. Horizontal frame; 6. Sliding mechanism; 7. Circumferential moving mechanism; 8. Lifting pulley block;

[0041] 601, track pulley; 602, fixed bracket;

[0042] 701, slot frame; 702, movable slot frame; 703, supporting slot frame; 704, limiting slot frame; 705, second roller;

[0043] 801, fixed pulley; 802, fixed pulley bracket; 803, movable pulley; 804, movable pulley bracket; 805, hook; 806, nylon rope. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0045] like Figures 1 to 3 As shown, it shows a specific embodiment of the present invention: Figures 1 to 3 As shown, the stator auxiliary embedding device of a hydro-generator disclosed in the present invention comprises a column 1, the bottom of the column 1 is fixedly connected to a fixed base 3, and first rollers 4 are arranged on both sides of the bottom of the fixed base 3;

[0046] One end of a horizontal frame 5 is welded to one side of the top of the column 1, and a circumferential moving mechanism 7 is fixed to the other end of the horizontal frame 5; a sliding mechanism 6 is arranged on the horizontal frame 5, and a lifting pulley block 8 is connected to the bottom of the sliding mechanism 6.

[0047] Preferably, Figure 1 As shown, reinforcing brackets 2 are respectively arranged on both sides of the column 1 , one end of the reinforcing bracket 2 is respectively fixed on both sides of the column 1 , and the other end of the reinforcing bracket 2 is respectively fixed on both sides of the fixed base 3 .

[0048] The design of the auxiliary stator embedding device for hydro-generators is to improve the efficiency and accuracy of stator bar embedding, while ensuring the stability and strength of the device during operation.

[0049] The column serves as the main supporting structure of the device. The bottom of the column is fixedly connected to the fixed base to provide vertical support for the entire device. The fixed base is located at the bottom of the column, and first rollers are arranged on both sides of the bottom. These rollers enable the base to move on the ground, which is convenient for adjusting the position of the device. The design of the reinforcing bracket mainly considers the stability and strength of the device. The reinforcing bracket is arranged to increase the stability of the entire device, especially when the lifted stator wire rod is heavier and longer. The two ends of the reinforcing bracket are respectively fixed on both sides of the column and the fixed base to form a triangular structure. Such a structure can effectively increase the strength and stability of the entire device due to the stability of the triangle.

[0050] Preferably, Figure 2 As shown, the sliding mechanism 6 includes a track pulley 601 and a fixed bracket 602 . The track pulley 601 is fixed to the top of the fixed bracket 602 by bolts, and the track pulley 601 can slide on the horizontal frame 5 .

[0051] The sliding mechanism 6 in the auxiliary embedding device of the hydro-generator stator is a key part for realizing the precise positioning of the stator wire rods.

[0052] 1. Track pulley 601: The track pulley is the core component of the sliding mechanism, which is fixed to the top of the fixed bracket 602 by bolts and is designed to slide on the horizontal frame 5. This design allows the track pulley to move freely in the horizontal direction, thereby adjusting the horizontal position of the stator bar.

[0053] 2. Fixed bracket 602: The function of the fixed bracket is to provide a stable fixing point for the track pulley 601.

[0054] 3. Function of the sliding mechanism: The main function of the sliding mechanism 6 is to freely move horizontally on the horizontal frame 5 to adjust the horizontal position of the stator wire bar to be lifted. The cooperation between the track pulley and the horizontal frame enables free horizontal movement, while the fixed bracket ensures the stability of the lifting pulley block during the movement.

[0055] 4. Lifting pulley block 8: The bottom part connected to the sliding mechanism 6 is the lifting pulley block 8, which is used for vertical movement and precise positioning of the wire rod. The lifting pulley block is a key component for realizing the vertical lifting and positioning of the stator wire rod.

[0056] With this design, the operator can easily adjust the position of the stator bar, both horizontally and vertically, with precise control. This precise control is crucial to ensure that the stator bar is correctly inserted into the stator slot, and also improves the efficiency and safety of the entire insertion process.

[0057] Preferably, Figure 2 As shown, the lifting pulley group 8 includes a fixed pulley 801, a fixed pulley bracket 802, a movable pulley 803, a movable pulley bracket 804, a hook 805 and a nylon rope 806. The fixed pulley 801 is fixed to the lower part of the fixed bracket 602 through the fixed pulley bracket 802, the movable pulley bracket 804 is fixed to the outer side of the movable pulley 803, the bottom of the movable pulley bracket 804 is connected to the hook 805, and the movable pulley 803 is connected to the fixed pulley 801 through the nylon rope 806 for lifting.

[0058] The lifting pulley block 8 is a key part of the auxiliary embedding device of the hydro-generator stator, and is responsible for the vertical movement and precise positioning of the wire rod.

[0059] 1. Fixed pulley 801: The fixed pulley is fixed on the fixed pulley bracket 802, and its central axis is fixed. Its main function is to change the direction of force so as to more easily position and lift the stator wire rod.

[0060] 2. Fixed pulley bracket 802: The fixed pulley bracket is fixed to the lower part of the fixed bracket 602 and is used to support and fix the fixed pulley 801.

[0061] 3. Movable pulley 803: A movable pulley is a pulley that can move with a heavy object. It can save effort, usually half the effort, but it also doubles the distance over which the force acts.

[0062] 4. The movable pulley bracket 804: The movable pulley bracket is fixed on the outer side of the movable pulley 803 and is used to support and fix the movable pulley.

[0063] 5. Hook 805: The bottom of the movable pulley bracket 804 is connected with a hook 805, which is used to connect the stator wire rods for lifting. Generally, nylon ropes are used to tie the stator wire rods on site, and then the hooks are used to lift them. When the positioning is completed, the hooks are removed.

[0064] 6. Nylon rope 806: The nylon rope is used to connect the fixed pulley 801 and the movable pulley 803. By pulling the nylon rope, the stator bar can be lifted vertically. When not in use, the nylon rope can be tied to the column to prevent the movable pulley from falling. After the device is used, the movable pulley and the nylon rope can be put away;

[0065] The working principle of the lifting pulley block 8 is to utilize the fixed pulley to change the direction of force and the labor-saving characteristics of the movable pulley to achieve vertical movement of the weight by pulling the nylon rope 806. During the lifting process, one end of the nylon rope 806 is fixed to the fixed pulley 801, and the other end is connected to the weight through the movable pulley 803. When the nylon rope is pulled, since the fixed pulley does not move with the weight, the movable pulley rises with the weight, thereby achieving lifting.

[0066] When designing a lifting pulley block, it is necessary to consider the mechanical efficiency of the pulley block, which is affected by factors such as the gravity of the movable pulley, the weight of the rope, and friction. In order to improve the mechanical efficiency, methods such as reducing the proportion of additional work in the total work, improving the mechanical structure, and reducing friction resistance can be adopted.

[0067] In addition, the design of the pulley block also needs to take safety into consideration, ensuring stability and reliability during the lifting process and preventing accidents during the lifting of heavy objects.

[0068] Preferably, Figure 3 As shown, the circumferential moving mechanism 7 includes slot frames 701 on both sides, a supporting slot frame 703 is fixedly arranged between the slot frames 701 on both sides, a movable slot frame 702 is vertically arranged on the supporting slot frame 703, and second rollers 705 are arranged at the bottom of both ends of the movable slot frame 702. A limiting frame is also arranged between the slot frames 701 on both sides, and the limiting frame is located at the lower side of the supporting slot frame 703. The slot frames 701 on both sides are clamped on the ring plate on the stator base.

[0069] The circumferential moving mechanism 7 is a part of the auxiliary embedding device of the hydro-generator stator, and its function is to realize the circumferential movement of the device along the ring plate on the stator base so as to embed the stator wire rods. The following is a detailed description of the circumferential moving mechanism 7:

[0070] 1. Groove frames 701: Groove frames 701 are provided on both sides of the circumferential movement mechanism. The groove frames on both sides are used to clamp on both sides of the ring plate on the stator base to achieve the guiding effect of circumferential movement.

[0071] 2. Supporting slot frame 703: A supporting slot frame 703 is fixedly arranged between the slot frames 701 on both sides. The design of the supporting slot frame is mainly used as a support for the mobile slot frame.

[0072] 3. Moving slot frame 702: A moving slot frame 702 is vertically arranged on the supporting slot frame 703, which is the part that actually performs circumferential movement.

[0073] 4. Second rollers 705: Second rollers 705 are provided at the bottom of both ends of the movable slot frame 702, which allow the movable slot frame to roll along the ring plate on the stator base, thereby achieving circumferential movement.

[0074] 5. Limiting frame: A limiting frame is provided on the lower side of the supporting slot frame 703, and is located between the slot frames 701 on both sides. The function of the limiting frame is to limit the position in the longitudinal direction when the slot frames on both sides are clamped on both sides of the ring plate on the stator base to ensure that it moves on the correct path.

[0075] In actual work, in order to improve work efficiency, two such devices are usually used, each device is responsible for half a circle of stator bar inlay. This configuration can improve work efficiency while keeping costs low. The circumferential movement mechanism can achieve rapid positioning and inlaying of stator bars, which is very important for the installation of large hydro-turbine generators.

[0076] Preferably, Figures 1-2 As shown, the number of the horizontal frames 5 is two, the two horizontal frames 5 are arranged up and down, and the sliding mechanism 6 is arranged on the lower horizontal frame 5 .

[0077] In the auxiliary embedding device for the stator of a hydro-turbine generator, the design of arranging two horizontal frames 5 one above the other can provide multiple advantages, especially in terms of increasing the strength and stability of the overall structure.

[0078] 1. Increased structural strength: By providing two horizontal frames 5, the lateral and longitudinal strength of the device can be significantly increased. This additional strength is necessary when hoisting and moving stator bars weighing hundreds of kilograms to ensure that no bending or deformation occurs during construction.

[0079] 2. Distribute the load: Two horizontal racks can more effectively distribute the load on the device, especially when lifting and moving heavy objects. The load is evenly distributed between the two horizontal racks, reducing the stress concentration that a single horizontal rack may experience.

[0080] 3. Improved stability: During the lifting operation, the two horizontal frames provide better torsion and bending resistance, thereby improving the stability of the entire device. This is essential to ensure accurate alignment and inlay of the stator bars.

[0081] 4. Enhanced rigidity: The design of two horizontal frames increases the rigidity of the entire device, making it less prone to elastic deformation when subjected to external forces, which is necessary for precise construction.

[0082] 5. Easy installation and maintenance: The two horizontal racks arranged up and down provide more installation points and maintenance channels for the device. This makes installation, maintenance and overhaul work more convenient and safer.

[0083] 6. Adapt to different lengths of wire rods: In some cases, it may be necessary to inlay stator wire rods of different lengths. The design of two horizontal racks can provide a larger adjustment range to accommodate wire rods of different lengths.

[0084] 7. Reduce vibration: During the lifting and moving process, the two horizontal frames can reduce the potential errors caused by vibration and ensure the precise positioning of the wire rods.

[0085] 8. Cost-effectiveness: Although a horizontal rack is added, this design does not significantly increase the cost while improving the performance of the device. Instead, it provides better long-term value by improving construction efficiency and reducing potential maintenance costs.

[0086] In the auxiliary mounting device for the stator of the hydro-generator, the design of arranging two horizontal frames 5 one above the other not only increases the structural strength, but also provides additional advantages, especially in terms of work safety. Such a design allows workers to use the upper horizontal frame as a tie point for the safety belt when working at a height, thus achieving a safety measure of hanging high and using low.

[0087] During the stator inlay work of the hydro-turbine generator, workers often need to work around the stator base, which involves working at height. The design of two horizontal frames allows the upper horizontal frame to be used as a tie-down point for the safety belt, so that even if a slip occurs, the safety belt can provide the necessary protection and reduce the risk of workers falling.

[0088] In summary, the design of the two horizontal frames 5 is to ensure the reliability and durability of the stator bar embedding device when bearing heavy loads and performing precise operations. This design improves the overall performance of the device, enabling it to more effectively complete the embedding of the stator bar. Secondly, the design of the two horizontal frames not only enhances the structural strength of the device, but also provides a safe working environment for the staff, so that the risks of high-altitude operations are effectively controlled.

[0089] Preferably, Figure 3 As shown, the distance between the two side trough frames 701 is 0.7 m, the length of the trough frames 701 is set to 0.4-0.45 m, and the length of the movable trough frame 702 is set to 0.4-0.45 m.

[0090] The dimensions used in the circumferential movement mechanism mainly consider the dimensions of the ring plate on the stator base. The dimensions determined based on the site are as follows:

[0091] 1. The distance between the slot frames 701 on both sides: The slot frames on both sides are clamped on the ring plate on the stator base, corresponding to the size of the ring plate on the stator base, and are set to 0.7 meters. The ring plate on the stator base is used for guidance to achieve circumferential movement and complete the installation of the stator wire rods.

[0092] 2. The length of the slot frame 701 is set between 0.4 and 0.45 meters. This size range is to adapt to different models of stator bases and ensure that the device can fit closely with the base.

[0093] 3. The length of the mobile trough frame 702 is also set between 0.4 and 0.45 meters, matching the length of the trough frame 701, ensuring the consistency and stability of the device during movement.

[0094] In summary, this design not only improves the installation efficiency of stator bar embedding, but also meets the needs of on-site use by providing additional strength and stability and enhancing work safety.

[0095] Preferably, Figure 1 As shown, the height of the column 1 is 3.67 m, and the length of the fixed base 3 is 1 m.

[0096] In the design of the auxiliary inlay device for the stator of the hydro-turbine generator, the height of the column 1 and the length of the fixed base 3 are determined according to the height of the stator base on site to ensure that the installation requirements of the stator wire bars are met. Specifically:

[0097] 1. The height of column 1 is set to 3.67 meters. This height is to adapt to the height of the stator base on site and ensure that the stator bar can be smoothly installed in the stator slot. As the main supporting structure of the device, the height of the column must be able to cover the vertical distance from the stator base to the stator bar installation position.

[0098] 2. The length of the fixed base 3 is set to 1 meter. This length is to ensure the stability of the base and to be used in conjunction with the column 1. The fixed base serves as the bottom support of the device, and its length needs to be sufficient to support the column and ensure the stability of the entire device.

[0099] In actual applications, the size of the device needs to be adjusted according to the specific working environment and the parameters of the stator base to ensure that the device can effectively assist the inlaying of the stator wire bars. At present, the device has been made into a finished product based on the actual situation on site, and the size meets the needs of on-site use, which greatly improves the installation efficiency and ensures the smooth progress of the construction.

[0100] Preferably, Figures 1 to 3 As shown, the nylon rope 806 has a diameter of 10 mm and a length of 30 m.

[0101] When selecting nylon rope for pulling up the stator bars, several factors need to be considered, especially the weight and length of the stator bars, as well as the diameter, length and strength of the nylon rope.

[0102] 1. Basic parameters of nylon rope

[0103] Diameter: The diameter of nylon rope 806 is 10mm. This is a relatively large diameter, which generally means higher load-bearing capacity and better wear resistance.

[0104] Length: 30m. This length should be enough to pull the stator bar up from a certain height, but it needs to be adjusted according to the actual situation on site.

[0105] 2. Strength considerations

[0106] Load-bearing capacity: The load-bearing capacity of a nylon rope is directly related to its diameter. Generally speaking, the larger the diameter of the nylon rope, the greater its load-bearing capacity. For a nylon rope with a diameter of 10mm, its load-bearing capacity is usually sufficient to pull up heavier stator bars.

[0107] Safety factor: When choosing a nylon rope, in addition to considering its basic load-bearing capacity, a certain safety factor must also be considered. That is, the load-bearing capacity of the selected nylon rope should be much greater than the actual required tension to ensure the safety and reliability of the operation.

[0108] Other considerations

[0109] Abrasion resistance: Stator bars may have sharp edges or corners, which requires the nylon rope to have good abrasion resistance to prevent being cut or worn during the pull-up process.

[0110] Flexibility: The nylon rope should have a certain flexibility to facilitate flexible use in complex operating environments.

[0111] Weather resistance: If there are adverse factors such as moisture and corrosion in the working environment, the weather resistance of the nylon rope must also be considered to ensure its stability and reliability in long-term use.

[0112] In summary, it is reasonable to select nylon rope 806 with a diameter of 10 mm and a length of 30 m for pulling up the stator bar. However, in the actual use process, further evaluation and adjustment are required according to the actual weight and length of the stator bar and the specific conditions of the working environment to ensure that the selected nylon rope can meet the actual use requirements and has sufficient safety and reliability.

[0113] The method for using the auxiliary embedding device for the stator of a hydro-turbine generator is performed by performing the following steps:

[0114] Step 1, crane placement: the crane places the device in the corresponding slot, and the circumferential moving mechanism 7 is clamped on the upper ring plate of the stator base;

[0115] Step 2, lifting the stator wire rod: lifting the pulley block 8 to pull the stator wire rod to a fixed height;

[0116] Step 3, stator bar inlay: pull the sliding mechanism 6 to move toward the stator bar slot, and the staff completes the inlay of one stator bar;

[0117] Step 4, push the circumferential moving mechanism 7 to the next installation slot, and repeat steps 1 to 3 until all stator bars are embedded.

[0118] Method of using the auxiliary embedding device for the stator of a hydro-generator:

[0119] 1. Crane landing:

[0120] First, a crane is used to accurately place the stator auxiliary embedding device on the corresponding slot. At this time, the circumferential moving mechanism 7 is clamped on the upper ring plate of the stator base to ensure the stability of the device.

[0121] 2. Lifting stator bars:

[0122] By lifting the pulley block 8, the stator wire rod is pulled up to a predetermined height to prepare for the embedding work.

[0123] 3. Stator bar inlay:

[0124] Then the sliding mechanism 6 is pulled to move the device along the direction of the stator bar slot. The staff completes the inlaying of the stator bar in this process.

[0125] 4. Circumferential movement:

[0126] After one stator bar is embedded, the circumferential moving mechanism 7 is pushed to the next installation slot, and steps 1 to 3 are repeated until all stator bars are embedded.

[0127] As an important component of the generator, the manufacturing and installation process of the stator of a hydro-turbine generator involves several key steps, including base welding, lamination, and wire rod inlaying.

[0128] 1. Stator base welding:

[0129] The stator base is usually composed of four large ring plates, which need to be precisely welded on site to form a stable whole. During welding, the quality of the weld must be guaranteed to avoid the generation of pores and cracks.

[0130] 2. Lamination:

[0131] Lamination is to stack silicon steel sheets in a certain order and direction to form the stator core. This process requires precise alignment and tightening to ensure the uniformity of the core and the continuity of the magnetic circuit.

[0132] 3. Wire rod inlay:

[0133] Inserting stator bars into the slots of the stator core is a delicate job that requires precise placement and fixing of the bars. The ends of the bars usually need to be welded to ensure a reliable electrical connection.

[0134] Through the above steps, the installation quality of the stator can be ensured, thereby ensuring the long-term, stable and safe operation of the hydro-generator.

[0135] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention. These changes involve related technologies well known to those skilled in the art, which all fall within the scope of protection of the patent of the present invention.

[0136] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A stator auxiliary embedding device for a hydro-generator, characterized in that: It comprises a column (1), the bottom of the column (1) is fixedly connected to a fixed base (3), and first rollers (4) are arranged on both sides of the bottom of the fixed base (3); One end of a horizontal frame (5) is welded to one side of the top of the column (1), and a circumferential moving mechanism (7) is fixed to the other end of the horizontal frame (5); a sliding mechanism (6) is arranged on the horizontal frame (5), and the bottom of the sliding mechanism (6) is connected to a lifting pulley block (8).

2. The auxiliary embedding device for the stator of a hydro-generator according to claim 1, characterized in that: Reinforcement brackets (2) are respectively arranged on both sides of the column (1), one end of the reinforcement bracket (2) is respectively fixed to both sides of the column (1), and the other end of the reinforcement bracket (2) is respectively fixed to both sides of the fixed base (3).

3. The auxiliary embedding device for the stator of a hydro-generator according to claim 2, characterized in that: The sliding mechanism (6) comprises a track pulley (601) and a fixed bracket (602), wherein the track pulley (601) is fixed to the top of the fixed bracket (602) by bolts, and the track pulley (601) can slide on the horizontal frame (5).

4. The auxiliary embedding device for the stator of a hydro-generator according to claim 3, characterized in that: The lifting pulley group (8) comprises a fixed pulley (801), a fixed pulley bracket (802), a movable pulley (803), a movable pulley bracket (804), a hook (805) and a nylon rope (806); the fixed pulley (801) is fixed to the lower part of the fixed bracket (602) through the fixed pulley bracket (802); the movable pulley bracket (804) is fixed to the outer side of the movable pulley (803); the bottom of the movable pulley bracket (804) is connected to the hook (805); the movable pulley (803) is connected to the fixed pulley (801) through the nylon rope (806) for lifting.

5. The auxiliary embedding device for a hydro-generator stator according to any one of claims 1 to 4, characterized in that: The circumferential movement mechanism (7) comprises groove frames (701) on both sides, a supporting groove frame (703) is fixedly arranged between the groove frames (701) on both sides, a movable groove frame (702) is vertically arranged on the supporting groove frame (703), second rollers (705) are arranged at the bottom of both ends of the movable groove frame (702), and a limiting frame is also arranged between the groove frames (701) on both sides, the limiting frame is located at the lower side of the supporting groove frame (703), and the groove frames (701) on both sides are clamped on the ring plate on the stator base.

6. The auxiliary embedding device for the stator of a hydro-generator according to claim 5, characterized in that: The horizontal frames (5) are provided in two numbers, the two horizontal frames (5) are arranged up and down, and the sliding mechanism (6) is provided on the lower horizontal frame (5).

7. The auxiliary embedding device for the stator of a hydro-generator according to claim 6, characterized in that: The distance between the two side trough frames (701) is 0.7m, the length of the trough frame (701) is set to 0.4-0.45m, and the length of the movable trough frame (702) is set to 0.4-0.45m.

8. The auxiliary embedding device for the stator of a hydro-generator according to claim 1, characterized in that: The height of the column (1) is 3.67 m, and the length of the fixed base (3) is 1 m.

9. The auxiliary embedding device for the stator of a hydro-generator according to claim 6, characterized in that: The diameter of the nylon rope (806) is 10 mm and the length is 30 m.

10. A method for using a stator auxiliary embedding device for a hydro-generator, characterized in that: The stator auxiliary embedding device of a hydro-turbine generator according to any one of claims 1 to 9 is used to perform the following steps: Step (1), crane positioning: the crane positions the device in a corresponding slot, and the circumferential moving mechanism (7) is clamped on the upper ring plate of the stator base; Step (2), lifting the stator wire rod: lifting the pulley block (8) to pull the stator wire rod to a fixed height; Step (3), stator wire bar inlay: pull the sliding mechanism (6) to move toward the stator wire bar slot, and the staff completes the inlay of one stator wire bar; Step (4), push the circumferential moving mechanism (7) to the next installation slot, and repeat steps (1) to (3) until all stator wire bars are embedded.

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