Rotor insulation aid dismounting frame and dismounting tool

Abstract

The application provides a rotor insulation auxiliary removal frame and removal tool, wherein the auxiliary removal frame comprises a support plate, a first traction plate and a second traction plate, the first traction plate and the second traction plate are arranged on the same side of the support plate and extend along the thickness direction of the support plate, two groups of connecting components are arranged on the first traction plate and the second traction plate respectively, and the two groups of connecting components are detachably connected with the insulation through openings at different positions of the insulation. The application can improve the removal efficiency of the insulation, protect the insulation and the rotor winding end during the removal process, and ensure the safety of the operation.

Description

Technical Field

[0001] This application relates to the field of generator set technology, and in particular to an auxiliary frame and tool for removing rotor insulation components. Background Technology

[0002] The rotor is the core rotating component of the variable-speed generator set. Its winding ends are supported by retaining rings, and insulating blocks and impregnated felt are installed between the winding ends and the retaining rings to ensure electrical insulation. Long-term operation of the unit will cause a small displacement of the rotor winding ends. Although this does not affect the normal operation of the unit, it will cause the insulating blocks to be compressed, resulting in increased compaction. Therefore, during the maintenance of the unit, rivets need to be fixed on the ground and the insulating parts need to be dragged off the shaft with the help of a lifting chain. Because the insulation parts are relatively compacted, the amount of movement generated when the insulation parts are removed is large, and the instantaneous stress released by the lifting chain will also cause it to swing violently, which can easily cause impact damage to the insulation parts or winding ends, and in severe cases, endanger the safety of on-site workers. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an auxiliary frame and tool for removing rotor insulation components, so as to solve some or all of the technical problems mentioned above.

[0004] To achieve the above objectives, a first aspect of this application provides a rotor insulation component auxiliary removal frame, comprising:

[0005] Support plate;

[0006] A first traction plate and a second traction plate are disposed on the same side of the support plate and extend along the thickness direction of the support plate.

[0007] Two sets of connecting components are respectively disposed on the first traction plate and the second traction plate; the two sets of connecting components are detachably connected to the insulating component through openings at different positions of the insulating component.

[0008] A second aspect of this application provides a demolition tool, comprising:

[0009] As described in the first aspect, the auxiliary dismantling frame; and

[0010] A lifting unit is used to apply thrust to the auxiliary dismantling frame. The top of the lifting unit abuts against the bottom of the support plate so as to drive the insulating component to move synchronously through the auxiliary dismantling frame.

[0011] As can be seen from the above, the rotor insulation component auxiliary removal frame and removal tool provided in this application, by setting corresponding connecting components on the first traction plate and the second traction plate, and making the connecting components detachably connected to the openings at different positions of the insulation component, can enhance the control of the insulation component removal process, reduce the instantaneous displacement generated when the insulation component is separated from the rotor, which is conducive to improving the removal efficiency of the insulation component, ensuring the protection of the insulation component and the rotor winding ends during the removal process, and ensuring the safety of the removal operation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the rotor structure in an embodiment of this application;

[0014] Figure 2 This is a structural schematic diagram of the dismantling frame and lifting unit in the embodiments of this application;

[0015] Figure 3 This is a schematic diagram illustrating the connection relationship between the connecting pin and the insulating component in an embodiment of this application;

[0016] Figure 4 This is a top view of the support plate in an embodiment of this application;

[0017] Figure 5 This is a schematic diagram showing the working state of the demolition tool in the embodiments of this application.

[0018] Explanation of reference numerals in the attached figures:

[0019] R, rotor; IB, insulator; H, opening;

[0020] 1. Support plate; 101. Bearing part; 102. First extension part; 103. Second extension part;

[0021] 2. First traction plate;

[0022] 3. Second traction plate;

[0023] 4. Connecting components; 401. Connecting pin; 402. Pin hole;

[0024] 5. Reinforcing plate;

[0025] 6. Lifting unit. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figure 1 As shown, the rotor R of the generator set is surrounded by rotor R windings. The ends of the rotor R windings are supported by retaining rings, and insulating blocks and impregnated felt are provided between the ends of the rotor R windings and the retaining rings to ensure electrical insulation between them. Therefore, before performing maintenance on the ends of the rotor R windings, the insulating blocks must be removed to relieve the supporting effect of the retaining rings on the windings.

[0029] Long-term operation of the generator can cause slight displacement at the ends of the rotor R winding, increasing the internal compactness of the insulation block and making its removal from the rotor R more difficult. Typically, when removing the insulation component IB from the rotor R, rivets are pre-embedded in the ground, and a lifting chain is connected using the opening H on the insulation component IB. The chain, in conjunction with the rivets, then pulls the insulation component IB out of the rotor R. However, using a lifting chain to remove the insulation component IB has significant drawbacks: First, this method of removing the insulation component IB using rivets and a lifting chain requires a high-quality working environment, and the lifting chain only acts on a localized area of ​​the insulation component IB, easily leading to poor overall synchronization during detachment and difficulty in controlling the amount of movement, potentially damaging the ends of the winding. Second, the instantaneous stress released by the lifting chain can cause violent oscillations, potentially causing the insulation component IB or the ends of the rotor R winding to collide, even threatening the safety of workers. Furthermore, due to the large instantaneous force of the lifting chain, repeated disassembly and reassembly in this way reduces the lifespan and reliability of the rotor R, affecting the long-term stable operation of the unit.

[0030] In view of this, this application provides an auxiliary removal frame and removal tool for the rotor R insulation component IB, combined with Figure 2The figure shows a detailed description of the rotor R insulation component IB auxiliary removal frame and removal tools provided in this application.

[0031] In a first aspect, this application provides an auxiliary removal frame for rotor R insulator IB, comprising a support plate 1, a first traction plate 2, a second traction plate 3, and two sets of connecting assemblies 4; the first traction plate 2 and the second traction plate 3 are disposed on the same side of the support plate 1 and extend along the thickness direction of the support plate 1; the two sets of connecting assemblies 4 are respectively disposed on the first traction plate 2 and the second traction plate 3 and are correspondingly disposed; the two sets of connecting assemblies 4 are detachably connected to the insulator IB through openings H at different positions of the insulator IB.

[0032] Specifically, such as Figure 2 and Figure 4 As shown, the auxiliary demolition frame provided in this application includes a support plate 1, and a first traction plate 2 and a second traction plate 3 connected to the same side of the support plate 1. The first traction plate 2 and the second traction plate 3 extend along the thickness direction of the support plate 1 so that a gate-shaped structure is formed between the support plate 1, the first traction plate 2 and the second traction plate 3.

[0033] Furthermore, the auxiliary dismantling frame provided in this application also includes two sets of connecting components 4, such as... Figure 2 and Figure 4 As shown, two sets of first connecting components 4 are respectively and correspondingly arranged on the first traction plate 2 and the second traction plate 3. When the insulating component IB is removed using the auxiliary removal frame, the support plate 1 can be erected above the insulating component IB, so that the two traction plates are located on both sides of the insulating component IB, thereby establishing a detachable connection between the two sets of connecting components 4 and the insulating component IB on opposite sides. Furthermore, the two sets of connecting components 4 achieve detachable connection through openings H at different positions on the insulating component IB, thereby increasing the connection points between the auxiliary removal frame and the insulating component IB through the connecting components 4 on the two traction plates, increasing the control area of ​​the insulating component IB, which is beneficial to improving the control accuracy of the detachment process of the insulating component IB, reducing the instantaneous displacement, not only improving the removal efficiency of the insulating component IB, but also preventing damage to the rotor R winding end during the removal process.

[0034] In some embodiments, such as Figure 2 , Figure 4 as well as Figure 5As shown, each set of connecting components 4 includes at least one connecting pin 401; the first traction plate 2 and the second traction plate 3 are each provided with a corresponding pin hole 402, and a connecting pin 401 passes through each pin hole 402 so that the connecting pin 401 can slide relative to each other in the pin hole 402, thereby adjusting the position and extension state of the connecting pin 401 in the pin hole 402, so as to change the connection relationship between the connecting pin 401 and the insulating component IB.

[0035] For example, each set of connecting components 4 may be provided with one connecting pin 401, or at least two connecting pins 401 may be provided, depending on the implementation requirements.

[0036] Specifically, before removing the insulating component IB from the rotor R, the auxiliary removal frame must be erected above the insulating component IB, with the first traction plate 2 and the second traction plate 3 positioned on opposite sides of the insulating component IB. At this time, the connecting pins 401 on the two traction plates are respectively located on opposite sides of the insulating component IB. When connecting the insulating component IB through the connecting assembly 4, the connecting pins 401 can be pushed towards the insulating component IB along the extension direction of the pin shaft, so that the connecting pins 401 on the first traction plate 2 and the second traction plate 3 can be inserted into the openings H at different positions on the insulating component IB, thereby forming a stable connection between the auxiliary removal frame and the insulating component IB. When removing the insulating component IB using the auxiliary removal frame, it can be ensured that the force is uniform when the insulating component IB is subjected to force during removal. Due to the improved removal effect, the displacement of the insulating component IB is reduced, ensuring the reliability of the removal operation process.

[0037] In some embodiments, along the extending direction of the connecting pin 401, the orthographic projection of the pin hole 402 on the first traction plate 2 and the orthographic projection of the pin hole 402 on the second traction plate 3 do not coincide, ensuring that the connecting pins 401 on the two traction plates can be aligned with the openings H at different positions of the insulating component IB. This avoids interference between the connecting pins 401 on the two traction plates and enables multi-point connection between the auxiliary removal frame and the insulating component IB, thereby significantly improving the synergistic effect of the first traction plate 2 and the second traction plate 3 during the removal of the insulating component IB.

[0038] In some embodiments, such as Figure 2 and Figure 3As shown, the support plate 1 includes a bearing portion 101, a first extension portion 102 fixedly connected to the first traction plate 2, and a second extension portion 103 fixedly connected to the second traction plate 3, so that the support plate 1 is connected to the first traction plate 2 through the first extension portion 102 and the second traction plate 3 connected by the second extension portion 103; the first extension portion 102 and the second extension portion 103 are integrally connected to the opposite sides of the bearing portion 101, and the two are respectively extended in opposite directions, so that the support plate 1 forms a "Z"-shaped structure, so that the two traction plates are asymmetrically distributed on the opposite sides of the insulating component IB, so that the corresponding connecting components 4 on the two traction plates can be connected to the openings H at different positions of the insulating component IB; when the auxiliary dismantling frame is used for dismantling operations, the two traction plates can span the insulating component IB and be distributed on the opposite sides of the insulating component IB, thereby ensuring that the connecting components 4 on the two traction plates can establish a reliable connection relationship with the insulating component IB.

[0039] For example, the support plate 1 can be formed by cutting a single piece of steel plate structure so that the cut support plate 1 has a load-bearing part 101, a first extension part 102 and a second extension part 103, which helps to improve the overall resistance to deformation of the support plate 1.

[0040] Furthermore, setting the support plate 1 in a Z-shaped structure can reduce the overall weight of the support plate 1 and achieve a lightweight design, reduce the application burden of the auxiliary dismantling frame, and improve the dismantling efficiency of the insulation component IB.

[0041] In some embodiments, such as Figures 2-5 As shown, along the extension direction of the connecting pin 401, the length of the first extension 102 can be set to be less than the length of the second extension 103. When the auxiliary removal frame is erected above the insulating member IB, since the two extensions are located on both sides of the bearing portion 101 and extend in different directions, when the length of the first extension 102 is less than the length of the second extension 103, the orthogonal projection of the bearing portion 101 in its thickness direction is located between the insulating member IB and the first extension 102. In this way, the arrangement between the outer edge of the rotor R and the bearing portion 101 forms a sufficient operating space, which facilitates the installation of a power device to drive the auxiliary removal frame to move, ensuring that the insulating member IB can be stably removed from the rotor R.

[0042] In some embodiments, such as Figure 2 and Figure 4As shown, along the thickness direction of the support plate 1, the length of the first traction plate 2 is greater than the length of the second traction plate 3, so that the side of the first traction plate 2 closer to the second traction plate 3 abuts against the outside of the rotor R during the removal of the insulation component IB, thereby limiting the installation position of the auxiliary removal frame; specifically, when removing the insulation component IB using the auxiliary removal frame, by making the length of the first traction plate 2 greater than the second traction plate 3, after the auxiliary removal frame crosses the insulation component IB, the side of the first traction plate 2 closer to the second extension plate abuts against the outside of the rotor R, and the rotor R limits the first extension plate, meaning that the connecting pin 401 on the first extension plate and the second extension plate can be precisely aligned with the opening H of the insulation component IB, ensuring the stability and reliability of the insulation component IB removal process.

[0043] In some embodiments, the first traction plate 2 and the support plate 1, as well as the second traction plate 3 and the support plate 1, are also fixedly connected by a reinforcing plate 5, which can enhance the connection strength between the two traction plates and the support plate 1 and prevent breakage when the insulating component IB is removed from the auxiliary removal frame.

[0044] For example, both the first traction plate 2 and the second traction plate 3 are connected to the support plate 1 by welding. Therefore, the reinforcing plate can also be connected to the support plate 1, the first connecting plate and the second connecting plate by welding.

[0045] When removing the insulation component IB from the rotor R using an auxiliary removal frame, in order to further improve the removal efficiency of the rotor R and reduce the displacement of the insulation component IB when it detaches from the rotor R, a second aspect of this application also provides a removal tool, such as... Figure 2 and Figure 5 As shown, the dismantling tool includes an auxiliary dismantling frame as described in the first aspect, and a lifting unit 6 for applying a thrust to the auxiliary dismantling frame. When removing the insulator IB from the rotor R using the dismantling tool, the lifting unit 6 is installed inside the portal frame structure so that the lifting unit 6 is located between the edge region of the rotor R and the support plate 1. When the top of the lifting unit 6 abuts against the bottom of the support plate 1, the lifting unit 6 can apply a thrust to the support plate 1 and drive the auxiliary dismantling frame to move. Since the auxiliary dismantling frame and the insulator IB are connected, the movement of the auxiliary dismantling frame can drive the insulator IB to move synchronously, so that the insulator IB is detached from the rotor R and the winding end of the rotor R is exposed for maintenance work.

[0046] In some embodiments, the bottom of the support plate 1 is provided with an anti-slip area (not shown in the figure). When the top of the lifting unit 6 comes into contact with the anti-slip area, the frictional resistance between the top of the lifting unit 6 and the support plate 1 can be effectively enhanced, thereby ensuring the force application effect and operational stability of the lifting unit 6 in the process of pushing the auxiliary dismantling frame.

[0047] In some embodiments, the lifting unit 6 is a hand-operated jack or an electric jack.

[0048] For example, when a hand-operated jack is used as the lifting unit 6, its structure is simple, requires no power supply, and has high reliability. It can be applied to more complex application scenarios, reducing the difficulty of removing the insulation component IB and reducing the maintenance cost of the unit.

[0049] For example, when an electric jack is used as the lifting unit 6, the labor burden and labor input can be reduced, the time for removing the insulation component IB from the auxiliary dismantling frame can be shortened, the dismantling efficiency of the three insulation components IB after the rotor R can be improved, and the maintenance work can be carried out continuously.

[0050] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0051] The various embodiments in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The description in this application is given for illustrative purposes and is not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this application and to enable those skilled in the art to understand this application and design various embodiments with various modifications suitable for a particular purpose.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0054] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0055] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A rotor insulation component auxiliary removal frame, characterized in that, include: Support plate; A first traction plate and a second traction plate are disposed on the same side of the support plate and extend along the thickness direction of the support plate. Two sets of connecting components are respectively disposed on the first traction plate and the second traction plate; the two sets of connecting components are detachably connected to the insulating component through openings at different positions of the insulating component.

2. The rotor insulation component auxiliary removal frame according to claim 1, characterized in that, Each set of connection components includes at least one connection pin; Both the first traction plate and the second traction plate have pin holes, and each pin hole contains a connecting pin; during the removal of the insulating component, the connecting pins on the first traction plate and the second traction plate are distributed on opposite sides of the insulating component.

3. The rotor insulation component auxiliary removal frame according to claim 2, characterized in that, Along the extending direction of the connecting pin, the orthographic projection of the pin hole on the first traction plate does not coincide with the orthographic projection of the pin hole on the second traction plate.

4. The rotor insulation component auxiliary removal frame according to claim 2, characterized in that, The support plate includes a load-bearing portion, a first extension portion fixedly connected to the first traction plate, and a second extension portion fixedly connected to the second traction plate. The first extension and the second extension are integrally connected to the opposite sides of the support portion, and they extend in opposite directions respectively.

5. The rotor insulation component auxiliary removal frame according to claim 4, characterized in that, Along the extension direction of the connecting pin, the length of the first extension is less than the length of the second extension.

6. The rotor insulation component auxiliary removal frame according to claim 1, characterized in that, Along the thickness direction of the support plate, the length of the first traction plate is greater than the length of the second traction plate, so that the side of the first traction plate closer to the second traction plate abuts against the outside of the rotor during the removal of the insulation component, thereby limiting the installation position of the auxiliary removal frame.

7. The rotor insulation component auxiliary removal frame according to claim 1, characterized in that, The first traction plate and the support plate, as well as the second traction plate and the support plate, are also fixedly connected by a reinforcing plate.

8. A demolition tool, characterized in that, include: The auxiliary dismantling frame as described in any one of claims 1-7; as well as A lifting unit is used to apply thrust to the auxiliary dismantling frame. The top of the lifting unit abuts against the bottom of the support plate so as to drive the insulating component to move synchronously through the auxiliary dismantling frame.

9. The demolition tool according to claim 8, characterized in that, The bottom of the support plate is provided with an anti-slip area, and the top of the lifting unit abuts against the anti-slip area.

10. The demolition tool according to claim 8, characterized in that, The lifting unit is a hand-operated jack or an electric jack.

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