Transformer body filling base plate installation gap adjusting device

Abstract

The utility model relates to a transformer body filling base plate installation gap adjusting device, which comprises a device main body, an upper clamping piece, a lower clamping piece, an upper clamping piece, a lower clamping piece, an upper clamping piece and a lower clamping piece, and is characterized in that the device main body is operably lapped on upper clamping pieces on two sides of a transformer; and the lower pressing piece is fixedly connected with the device main body, and the lower pressing piece is operably pressed on a coil at a hollow part in the middle of a pressing ring in the transformer. In the installation process of the transformer, the device body is arranged on the upper clamping pieces on the two sides of the transformer, meanwhile, the lower pressing piece is pressed on a coil in the hollow-out position in the middle of a pressing ring in the transformer, then pressure is applied to the device body through an oil press, and the device body transmits the force to the pressing ring through the upper clamping pieces; the device body transmits force to the coil at the hollowed-out position of the pressing ring through the downward pressing piece, so that the end face of the coil can be integrally stressed, the problem of uneven height caused by uneven stress of the coil is avoided, enough space can be reserved for a follow-up filling base plate, and the filling base plate is more convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, and in particular to a device for adjusting the installation gap of a transformer body filling pad. Background Technology

[0002] In the design and manufacturing of power transformers, the stability and reliability of the coils are key factors in ensuring the long-term safe operation of the equipment. However, in existing technologies, especially when dealing with the integral pressure ring structure above the two-column coils, a significant technical challenge is often encountered: due to the hollow design of the middle part of the integral pressure ring, after the transformer body is pressed, the coil is not under force when the filler plate is installed at the transformer body installation position. This often results in uneven overall coil height, with the height on both sides being less than that in the middle. This phenomenon makes it impossible for the gap originally reserved for the filler plate to meet the design requirements, thus making it difficult to install the filler plate correctly.

[0003] When this happens, the current solution is usually to send the filler plate back to the factory for grinding and adjustment. This requires reheating and insulation of the entire unit body until the filler plate is returned, at which point it is then pressed and assembled again. This process is not only time-consuming and labor-intensive, increasing the production cycle and costs, but it can also affect the quality stability of the final product. Utility Model Content

[0004] This utility model provides a device for adjusting the installation gap of the transformer body filling pad, which is used to solve at least one of the above-mentioned technical problems.

[0005] This utility model provides a device for adjusting the installation gap of a transformer body filling pad, the device comprising:

[0006] The main body of the device is operably mounted on the upper clamps on both sides of the transformer;

[0007] The lower pressure component is fixedly connected to the main body of the device and can be operably pressed onto the coil in the hollowed-out part of the transformer's intermediate voltage ring.

[0008] In one embodiment, the main body of the device consists of two horizontal plates arranged in parallel, and the pressing member is fixedly connected to the two horizontal plates.

[0009] In one embodiment, the main body of the device is a square frame, and the pressing member is fixedly connected to two sides of the square frame.

[0010] In one embodiment, the main body of the device is a single panel, and the pressing member is fixedly connected to the bottom surface of the panel.

[0011] In one embodiment, the pressing member is a U-shaped plate with a flat bottom surface, and the two sides of the U-shaped plate are fixedly connected to the main body of the device.

[0012] In one embodiment, the U-shaped plate is provided with inclined reinforcing ribs or reinforcing plates inside.

[0013] In one embodiment, the bottom surface of the U-shaped plate is provided with stepped surfaces corresponding to both ends of its channel, a protective plate is installed on the bottom surface of the U-shaped plate, the protective plate is provided with buckles, the protective plate is snapped onto the bottom surface of the U-shaped plate by the buckles, and the bottom surface of the protective plate is provided with arc-shaped chamfers around its perimeter.

[0014] In one embodiment, the pressing member is a solid pressing block.

[0015] In one embodiment, the main body of the device has a hoisting hole, and a detachable lifting ring is provided on the main body of the device.

[0016] A transformer, comprising:

[0017] A transformer body, wherein a coil is provided in the transformer body;

[0018] A pressure ring is installed at the upper end of the transformer body;

[0019] An upper clamping member is mounted on the upper end face of the pressure ring;

[0020] During installation, the installation gap adjustment device described in any of the above technical solutions is used, wherein the main body of the device is operably overlapped on the upper clamp, and the lower pressing member passes through the pressure ring and presses on the coil.

[0021] Compared with the prior art, the advantages of this utility model are that, during the transformer installation process, the main body of the device is placed on the upper clamps on both sides of the transformer, while the lower pressure piece presses on the coil in the hollow part of the transformer's pressure ring. Then, pressure is applied to the main body of the device by a hydraulic press. The main body of the device transmits the force to the pressure ring through the upper clamps and to the coil in the hollow part of the pressure ring through the lower pressure piece. This allows the end face of the coil to be subjected to pressure as a whole, avoiding the problem of uneven height caused by uneven force on the coil. This allows sufficient space to be reserved for the subsequent filling pad, making the installation of the filling pad more convenient. Attached Figure Description

[0022] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0023] Figure 1 This is a side view of the transformer after installation.

[0024] Figure 2This is a top view of the transformer after installation;

[0025] Figure 3a This is a top view of the pressure ring;

[0026] Figure 3b This is a side view of the pressure ring;

[0027] Figure 3c yes Figure 3b Sectional view of AA;

[0028] Figure 4a This is a top view of the filling pad;

[0029] Figure 4b This is a side view of the filling pad;

[0030] Figure 5 This is a schematic diagram showing the installation gap between the upper yoke and the coil after the transformer is installed.

[0031] Figure 6a This is a top view of the installation gap adjustment device provided by this utility model;

[0032] Figure 6b This is a side view of the installation gap adjustment device provided by this utility model;

[0033] Figure 6c This is a schematic diagram of the second structure of the main body of the installation gap adjustment device provided by this utility model;

[0034] Figure 6d This is a schematic diagram of the third structure of the main body of the installation gap adjustment device provided by this utility model;

[0035] Figure 6e This is one of the installation schematic diagrams of the reinforcing member in the pressing part of the installation gap adjustment device provided by this utility model;

[0036] Figure 6f This is the second schematic diagram of the installation of the reinforcing member in the pressing component of the installation gap adjustment device provided by this utility model;

[0037] Figure 6g This is another structural schematic diagram of the pressing component in the installation gap adjustment device provided by this utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the protective plate in the installation gap adjustment device provided by this utility model;

[0039] Figure 8 This is a top view showing the coordination between the installation gap adjustment device and the transformer body during the transformer installation process.

[0040] Figure 9This is a side view of the installation gap adjustment device and the transformer body during the transformer installation process.

[0041] Figure label:

[0042] 10-Main body of the device; 101-Lifting hole; 11-Pressure component; 111-Reinforcing component; 112-Stepped surface; 12-Guard plate; 121-Snap fastener; 13-Lifting ring; 14-Air pump; 15-Airbag; 16-Flexible sleeve; 17-Sleeve;

[0043] 20-Transformer body; 21-Coil; 22-Pressure ring; 221-Groove; 23-Upper yoke; 24-Installation gap; 25-Filling pad; 26-Upper clamp;

[0044] 30-Hydraulic press. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0048] The present invention will be further described below with reference to the accompanying drawings.

[0049] like Figure 6a , Figure 6bAs shown, this utility model provides a transformer body filling pad installation gap adjustment device, including a device body 10 and a lower pressing member 11. The device body 10 is operably mounted on the upper clamps 26 on both sides of the transformer. The lower pressing member 11 is fixedly connected to the device body 10 and is operably pressed on the coil 21 at the hollowed-out middle part of the transformer intermediate pressure ring 22.

[0050] During transformer installation, the main body 10 of the device is placed on the upper clamps 26 on both sides of the transformer, while the lower pressure piece 11 presses on the coil 21 in the hollow part of the transformer's pressure ring 22. Then, pressure is applied to the main body 10 of the device through a hydraulic press. The main body 10 of the device transmits the force to the pressure ring 22 through the upper clamps 26, and to the coil 21 in the hollow part of the pressure ring 22 through the lower pressure piece 11. This allows the end face of the coil 21 to be subjected to pressure as a whole, avoiding uneven force on the coil 21 and resulting in uneven height. This allows sufficient space to be reserved for the subsequent filling pad 25, making the installation of the filling pad 25 more convenient.

[0051] Preferred, such as Figure 6a As shown, the main body 10 of the device is set as two parallel horizontal plates. The upper end of the lower pressure member 11 is fixedly connected to the two horizontal plates respectively. In the process of setting the structure, the horizontal plates can be used in a parallel state with the upper clamp 26, so that the horizontal plates are completely attached to the upper end surface of the upper clamp 26, making the force-bearing surface of the upper clamp 26 larger, the pressure on the coil 21 more uniform, and reducing the weight of the device. Of course, it can also be designed to be used in a perpendicular state with the horizontal plates and the upper clamp 26, with the horizontal plates and the upper clamp 26 in cross contact. Although this structure has a small force-bearing surface and is prone to uneven pressure, the horizontal plates between the two upper clamps 26 are connected to the lower pressure member 11. During the pressing process of the hydraulic press, the horizontal plates can deform downward, which can make the lower pressure member 11 move down more than in the parallel state, and the pressure effect on the coil 21 at the hollow part in the middle of the pressure ring 22 is better.

[0052] Optional, such as Figure 6c As shown, the main body 10 of the device is set as a square frame, and the upper end of the lower pressure member 11 is fixedly connected to the two opposite sides of the square frame. The main body 10 of the device with a square frame can better contact the upper clamp 26, increasing the contact area. The side spanning the upper clamp 26 can reinforce the device, making the device more stable when receiving the hydraulic press.

[0053] Other options include, such as Figure 6d As shown, the main body 10 of the device is set as a single panel, and the lower pressure member 11 is fixedly connected to the bottom surface of the panel. This structure allows the main body 10 of the device to be subjected to the pressure of the hydraulic press on the entire surface, making the device more stable during use, and the force applied to the upper clamp 26 and the lower pressure member 11 is more uniform. In addition, the overall strength of the device is also very high.

[0054] Preferred, such as Figure 6b As shown, the lower pressure member 11 is designed as a U-shaped plate with a flat bottom surface. It is best that the two sides of the U-shaped plate are set vertically. The two sides of the U-shaped plate are fixedly connected to the main body 10 of the device. During the installation of the transformer, the main body 10 of the device is transferred to its bottom plate through the two side plates of the U-shaped plate. The bottom plate presses the coil 21. The U-shaped plate reduces the weight of the entire device and makes it easy to move during the use of the device.

[0055] Furthermore, such as Figure 6e , Figure 6f As shown, an inclined reinforcing member 111 is provided inside the U-shaped plate. The reinforcing member 111 is a reinforcing rib or a reinforcing plate. There can be multiple reinforcing ribs or reinforcing plates. When multiple reinforcing ribs or reinforcing plates are provided, the inclination direction of the reinforcing ribs or reinforcing plates can be symmetrically arranged so that the reinforcing ribs or reinforcing plates support both side plates of the U-shaped plate, making the U-shaped plate stronger.

[0056] It's alright, such as Figure 7 As shown, the bottom surface of the U-shaped plate is provided with stepped surfaces 112 corresponding to both ends of its channel, which can ensure that the guard plate 12 can be installed on the bottom surface of the U-shaped plate without increasing the length of the lower pressure member 11. The guard plate 12 is provided with buckles 121, which are elastic. The guard plate 12 is snapped onto the bottom surface of the U-shaped plate by the buckles 121. The bottom surface of the guard plate 12 is provided with arc-shaped chamfers around its perimeter.

[0057] A protective plate 12 is provided between the pressure member 11 and the coil 21. The protective plate 12 is made of nylon and has rounded chamfers around its perimeter to prevent the bottom and perimeter of the pressure member 11 from damaging the coil 21, thus improving the installation effect of the transformer.

[0058] Furthermore, an air pump 14 is fixedly installed on the bottom surface inside the U-shaped plate, and an airbag 15 is installed on the bottom surface outside the U-shaped plate. The airbag 15 is fixedly installed on the bottom surface of the protective plate 12. The airbag 15 and the air pump 14 are connected through an air pipe. The airbag 15 has a plate-shaped structure. During the transformer assembly process, the airbag 15 is inserted between the two coils 21, and then the pressing component 11 presses down on the coils 21. As the coils 21 are pressed down, the air pump 14 inflates the airbag 15. After the airbag 15 expands, it supports the two coils 21 and prevents the distance between the two coils 21 from being too close. An integrally formed part is installed at the lower end of the airbag 15. A flexible sleeve 16 is provided, into which a rigid sleeve 17 is inserted. The diameter of the sleeve 17 is smaller than the distance between the two coils 21 after compression. When the airbag 15 is inserted between the two coils 21, the weight of the sleeve 17 will straighten the airbag 15. The rigid sleeve 17 will also support the airbag 15, preventing the airbag 15 from curling in the length direction of the sleeve 17. A long rod can be inserted into the sleeve 17. By manually operating the long rod to pull the sleeve 17 downward, the airbag 15 is prevented from rubbing against the side of the coil 21 during the downward movement, thus preventing the airbag 15 from accumulating between the two coils 21.

[0059] Optional, such as Figure 6g As shown, the lower pressing component 11 is a solid pressing block. Although the solid pressing block has the highest strength and the most stable structure of the entire device, the disadvantage is that the overall weight is too large.

[0060] Preferred, such as Figures 6a-6d As shown, the main body 10 of the device is provided with a hoisting hole 101, which is used to match the hoisting hole above the upper clamp 26. When installing the transformer, the upper clamp 26 and the main body 10 of the device can be hoisted through the hoisting hole 101. The main body 10 of the device is detachably provided with a hoisting ring 13, which facilitates the hoisting and transfer of the adjustment device.

[0061] like Figures 1-9 As shown, a transformer includes:

[0062] The transformer body 20 contains a coil 21.

[0063] A pressure ring 22 is installed on the upper end of the transformer body 20. The pressure ring 22 has an annular hollow structure and contacts the periphery of the coil 21. The hollow part in the middle is used to accommodate the upper yoke 23. After installation, there is an installation gap 24 between the upper yoke 23 and the coil 21. A groove 221 is provided at the position of the pressure ring 22 where it does not contact the coil 21. A filling pad 25 is provided in the groove 221 to press the coil 21 at the hollow part of the pressure ring 22.

[0064] Upper clamp 26 is installed on the upper end face of the pressure ring 22. Two upper clamps 26 are symmetrically arranged on the pressure ring 22. The upper yoke 23 is installed between the two upper clamps 26. A part of the upper clamp 26 is placed in the hollow of the pressure ring 22.

[0065] During installation, the installation gap adjustment device described in any of the above technical solutions is used. The main body 10 of the device is operably overlapped with the upper clamp 26, and the lower pressing member 11 passes through the pressure ring 22 and presses on the coil 21.

[0066] During the installation of the transformer, before the upper yoke 23 is installed, the upper clamp 26, the pressure ring 22 and the coil 21 are pressed together. Then, the filling pad 25 is inserted into the groove 221 of the pressure ring 22 to press the coil 21 together. Finally, the installation gap adjustment device is removed and the upper yoke 23 is inserted to fix the upper clamp 26 to the upper yoke 23.

[0067] During the clamping process of the upper clamp 26, pressure ring 22, and coil 21, the pressure ring 22 is first installed on the upper end of the transformer body 20, and the upper clamp 26 is installed on the upper end face of the pressure ring 22. Then, the device body 10 passes through the two upper clamps 26, aligning the lifting hole 101 with the lifting hole on the upper clamp 26. The position of the upper clamp 26 and the device body 10 can be adjusted through the lifting hole 101. The lower pressing member 11 presses on the coil 21 at the hollowed-out part of the pressure ring 22. Then, pressure is applied to the device body 10 by a hydraulic press, causing the device body 10 to simultaneously press on the upper clamp 26. The clamp 26, pressure ring 22, and lower pressure member 11 are applied to ensure that the coil 21 is subjected to uniform pressure, making the upper surface of the coil 21 flatter after pressure is applied. During the pressure holding process of the hydraulic press, the upper clamp 26 and pressure ring 22 are fixedly connected to the transformer body 20 by bolts. After the hydraulic press is completed, the installation gap adjustment device is lifted out by the lifting ring 13. An installation gap 24 is generated between the groove 221 of the pressure ring 22 and the coil 21. Then, the filling pad 25 is inserted for fixation. Finally, the iron yoke 23 is installed between the upper clamps 26, thus completing the installation of the transformer.

[0068] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for adjusting the installation gap of a transformer body filling pad, characterized in that, The adjustment device includes: The main body of the device is operably mounted on the upper clamps on both sides of the transformer; The lower pressure component is fixedly connected to the main body of the device and can be operably pressed onto the coil in the hollowed-out part of the transformer's intermediate voltage ring.

2. The transformer body filling pad installation gap adjustment device according to claim 1, characterized in that, The main body of the device consists of two horizontal plates arranged in parallel, and the pressing component is fixedly connected to the two horizontal plates.

3. The transformer body filling pad installation gap adjustment device according to claim 1, characterized in that, The main body of the device is a square frame, and the pressing component is fixedly connected to the two sides of the square frame.

4. The transformer body filling pad installation gap adjustment device according to claim 1, characterized in that, The main body of the device is a single panel, and the pressing component is fixedly connected to the bottom surface of the panel.

5. The transformer body filling pad installation gap adjustment device according to any one of claims 1-4, characterized in that, The pressing component is a U-shaped plate with a flat bottom surface, and the two sides of the U-shaped plate are fixedly connected to the main body of the device.

6. The transformer body filling pad installation gap adjustment device according to claim 5, characterized in that, The U-shaped plate is provided with inclined reinforcing ribs or reinforcing plates inside.

7. The transformer body filling pad installation gap adjustment device according to claim 5, characterized in that, The bottom surface of the U-shaped plate has stepped surfaces corresponding to both ends of its channel. A protective plate is installed on the bottom surface of the U-shaped plate, and a buckle is provided on the protective plate. The protective plate is fastened to the bottom surface of the U-shaped plate by the buckle. The bottom surface of the protective plate has arc-shaped chamfers around its perimeter.

8. The transformer body filling pad installation gap adjustment device according to any one of claims 1-4, characterized in that, The pressing component is a solid pressing block.

9. The transformer body filling pad installation gap adjustment device according to claim 1, characterized in that, The main body of the device has a hoisting hole, and a detachable lifting ring is provided on the main body of the device.

10. A transformer, characterized in that, include: A transformer body, wherein a coil is provided in the transformer body; A pressure ring is installed at the upper end of the transformer body; An upper clamping member is mounted on the upper end face of the pressure ring; During installation, the installation gap adjustment device according to any one of claims 1-9 is used, wherein the main body of the device is operably overlapped on the upper clamp, and the lower pressure member passes through the pressure ring and presses on the coil.

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