Three-dimensional wound core suspension structure and three-dimensional wound core mounting method

Abstract

The present application belongs to the technical field of transformer, and discloses a three-dimensional wound core suspension structure and a three-dimensional wound core mounting method. The three-dimensional wound core suspension structure comprises a lower clamp, a supporting piece and an upper clamp. The supporting piece comprises a first supporting part and a plurality of connecting parts connected to the first supporting part. The first supporting part is used for supporting the three-dimensional wound core and is arranged in a spaced manner with the bottom plate of the lower clamp. The bottom of each connecting part is connected to the lower clamp. The upper clamp is buckled on the top of the three-dimensional wound core, and the top of each connecting part is connected to the upper clamp. The three-dimensional wound core suspension structure and the three-dimensional wound core mounting method can avoid the coil being damaged by the pressure of the three-dimensional wound core while ensuring the suspension of the three-dimensional wound core.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a suspension structure for a three-dimensional wound iron core and a method for installing a three-dimensional wound iron core. Background Technology

[0002] With the development of power grids, the requirements for energy-saving products are getting higher and higher. Amorphous alloy three-dimensional wound core transformers have advantages such as energy saving and environmental protection, and their applications are becoming more and more widespread, with an increasing demand for large-capacity products.

[0003] Due to their material properties, amorphous alloys are prone to vibration and noise during excitation. The most direct way to solve this noise problem is to suspend the core. Here, suspension refers to suspending the three-dimensional wound core in the air. However, large-capacity products differ from small-capacity distribution transformers. Small-capacity distribution transformers have lightweight cores, so pads can be placed on the bottom of the yoke on the core, and the core can be supported and suspended by the coils, while the brackets support the coils. However, for 110kV products, the weight of the three-dimensional wound core can reach 15 tons. If it is suspended in the same way as small-capacity distribution transformers, the weight of the three-dimensional wound core will still be supported by the coils, which could easily damage the coils.

[0004] Therefore, it is urgent to design a suspension structure and installation method for a three-dimensional wound iron core to solve the above problems. Summary of the Invention

[0005] One objective of this invention is to provide a suspension structure for a three-dimensional wound core that, while ensuring the suspension of the three-dimensional wound core, avoids the coil being subjected to pressure from the three-dimensional wound core and prevents damage to the coil.

[0006] Another objective of this invention is to provide a method for installing a three-dimensional wound core, which, while ensuring the three-dimensional wound core is suspended, can prevent the coil from being subjected to pressure from the three-dimensional wound core and thus avoid damage to the coil.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The suspension structure of the three-dimensional wound core includes:

[0009] The lower clamp and the support member, wherein the support member includes a first support portion and a plurality of connecting portions connected to the first support portion, the first support portion is used to support the three-dimensional coiled iron core and is spaced apart from the bottom plate of the lower clamp, and the bottom of the plurality of connecting portions is connected to the lower clamp.

[0010] The upper clamp is fastened to the top of the aforementioned three-dimensional coiled iron core, and the tops of the plurality of aforementioned connecting parts are all connected to the aforementioned upper clamp.

[0011] As an alternative, the support member is triangular, and each corner of the support member is provided with two connecting parts at intervals. The two connecting parts are used to jointly limit one of the core columns of the three-dimensional coiled iron core.

[0012] As an optional solution, the aforementioned first support unit includes:

[0013] The support plate is triangular in shape and is used to support the bottom of the three-dimensional coiled iron core.

[0014] The three side plates are connected one-to-one with the three sides of the support plate, and each side plate is used to limit one side of the three-dimensional coiled iron core.

[0015] As an alternative, the connecting part has a protrusion at the position where it connects with the upper clamp and the lower clamp.

[0016] As an optional solution, the suspension structure of the aforementioned three-dimensional coiled iron core also includes an upper limit assembly, the upper and lower ends of which respectively abut against the top of the aforementioned three-dimensional coiled iron core and the aforementioned upper clamp.

[0017] As an optional solution, the aforementioned upper limit assembly includes a limiting plate and a first pad, the lower side of the limiting plate abutting against the top of the three-dimensional coiled core, and the first pad being tensioned between the limiting plate and the upper clamp; or

[0018] The aforementioned upper limit assembly includes a limit plate and an adjusting member. The lower side of the limit plate abuts against the top of the aforementioned three-dimensional coiled iron core, and the adjusting member is threadedly connected to the aforementioned upper clamp and can abut against the top of the aforementioned limit plate.

[0019] As an optional solution, each of the aforementioned three-dimensional wound cores is surrounded by a coil, and the aforementioned lower clamp includes:

[0020] The main body is a triangular box shape and is connected to multiple of the aforementioned connecting parts;

[0021] The second support portion is provided at each corner of the main body, and the second support portion is connected to the side wall of the main body at an angle. The second support portion is used to support the coil together.

[0022] As an optional solution, the suspension structure of the above-mentioned three-dimensional coiled core also includes pressure pins, with each coil corresponding to a number of pressure pins. The pressure pins are connected to the upper clamp and are used to abut against the insulating pressure block on the top of the corresponding coil.

[0023] The installation method of the three-dimensional wound core involves using the aforementioned suspension structure to install the three-dimensional wound core. The suspension structure further includes an upper limit assembly, the upper and lower ends of which respectively abut against the top of the three-dimensional wound core and the upper clamp. The installation method of the suspension structure of the three-dimensional wound core includes:

[0024] S10: Connect the bottom of the plurality of the above-mentioned connecting parts to the lower clamp;

[0025] S20: The three-dimensional coiled iron core is installed on the support member so that the first support part supports the three-dimensional coiled iron core.

[0026] S30: Place the upper clamp on the top of the three-dimensional coiled iron core and connect the tops of the plurality of connecting parts to the upper clamp.

[0027] S40: Wind the coil onto the core column corresponding to the three-dimensional coiled iron core, and assemble the body and leads;

[0028] S50: Install the upper limit assembly between the three-dimensional coil core and the upper clamp.

[0029] As an optional solution, step S11 is further included between S10 and S20: a second pad is provided between the first support and the lower clamp.

[0030] Between S40 and S50, there is also step S41: removing the second pad.

[0031] The beneficial effects of this invention are as follows:

[0032] This invention provides a suspension structure for a three-dimensional wound iron core. By setting a support member, the three-dimensional wound iron core is supported. The first support part of the support member is spaced apart from the bottom plate of the lower clamping member, so that when the first support part supports the three-dimensional wound iron core, it is in a suspended state, ensuring a noise reduction effect. At the same time, the two ends of the connecting part are connected to the lower clamping member and the upper clamping member respectively, so that the top of the three-dimensional wound iron core is also well limited. In this suspension structure, the suspension force of the three-dimensional wound iron core acts on the support member, and the support member then transmits the force to the lower clamping member, so that the suspension of the three-dimensional wound iron core is detached from the support of the coil, avoiding damage to the coil due to stress.

[0033] The present invention also provides a method for installing a three-dimensional wound iron core. By installing a support member on a lower clamp, the support member supports the three-dimensional wound iron core, so that the weight of the three-dimensional wound iron core is transmitted from the connecting part to the lower clamp, detaching it from the support of the coil and preventing the coil from being damaged. Attached Figure Description

[0034] Figure 1This is a schematic diagram of the structure of a three-dimensional wound iron core installed on a suspension structure of a three-dimensional wound iron core according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the support member provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the installation structure of the three-dimensional coiled iron core, support member and lower clamp member provided in the embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of a three-dimensional wound core after the coil is installed, provided in an embodiment of the present invention.

[0038] In the picture:

[0039] 200. Three-dimensional wound iron core; 210. Core column; 220. Iron core single frame; 300. Coil; 310. Insulating block;

[0040] 10. Lower clamping part; 11. Main body; 12. Second support part;

[0041] 20. Support component; 21. First support part; 211. Support plate; 212. Side plate; 22. Connecting part; 221. Protrusion;

[0042] 30. Upper clamping component;

[0043] 40. Upper limit component; 41. Limit plate; 50. Pressure pin. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] This embodiment provides a suspension structure for a three-dimensional wound core. While ensuring the three-dimensional wound core 200 is suspended, it avoids the coil 300 from being subjected to pressure from the three-dimensional wound core 200, thus preventing damage to the coil 300. For example... Figures 1-3 As shown, the suspension structure of the three-dimensional coiled iron core includes a lower clamp 10, a support 20, and an upper clamp 30. The support 20 includes a first support portion 21 and a plurality of connecting portions 22 connected to the first support portion 21. The first support portion 21 is used to support the three-dimensional coiled iron core 200 and is spaced apart from the bottom plate of the lower clamp 10. The bottom of the plurality of connecting portions 22 is connected to the lower clamp 10. The upper clamp 30 is fastened to the top of the three-dimensional coiled iron core 200, and the top of the plurality of connecting portions 22 is connected to the upper clamp 30.

[0049] The suspension structure of the aforementioned three-dimensional coiled iron core uses a support member 20 to support the three-dimensional coiled iron core 200. The first support part 21 in the support member 20 is spaced apart from the bottom plate of the lower clamp 10, so that the first support part 21 supports the three-dimensional coiled iron core 200 in a suspended state, ensuring noise reduction. At the same time, the two ends of the connecting part 22 are connected to the lower clamp 10 and the upper clamp 30 respectively, so that the top of the three-dimensional coiled iron core 200 is also well limited. In this suspension structure, the suspension force of the three-dimensional coiled iron core 200 acts on the support member 20, and the support member 20 then transmits the force to the lower clamp 10, so that the suspension of the three-dimensional coiled iron core 200 is detached from the support of the coil 300, avoiding damage to the coil 300 due to stress.

[0050] like Figure 3As shown, the three-dimensional rolled iron core 200 is a triangular prism formed by splicing three iron core single frames 220. Since the outer side of each iron core single frame 220 is curved, after splicing, a core column 210 is formed at the corner of the triangular prism.

[0051] Optionally, such as Figure 2 and Figure 3 As shown, the support member 20 is triangular, and two connecting parts 22 are provided at intervals at each corner of the support member 20. The two connecting parts 22 are used to jointly limit one of the core columns 210 of the three-dimensional coiled iron core 200. Through the above arrangement, the two connecting parts 22 limit the two sides of the core column 210, and two connecting parts 22 are provided on the outer sides of the three core columns 210 respectively, so that the three-dimensional coiled iron core 200 is not easy to deviate after installation, and the installation stability is higher.

[0052] Optionally, such as Figure 2 As shown, the first support portion 21 includes a support plate 211 and three side plates 212. The support plate 211 is triangular and is used to support the bottom of the three-dimensional wound core 200. The three side plates 212 are connected to the three sides of the support plate 211 one by one, and each side plate 212 is used to limit one side of the three-dimensional wound core 200. Through the above arrangement, the side plates 212 limit the bottom side of the core frame 220, further improving the stability of the installation of the three-dimensional wound core 200.

[0053] Optionally, such as Figure 2 As shown, the connecting portion 22 has a protrusion 221 at the position where it connects with the upper clamp 30 and the lower clamp 10. With this design, when the connecting portion 22 is connected to the upper clamp 30 or the lower clamp 10, the wall thickness of the protrusion 221 is relatively thick, making the connecting portion 22 less prone to damage. Optionally, the connecting portion 22 is connected to the upper clamp 30 or the lower clamp 10 by screws. For example, the screws pass through the upper clamp 30 and the protrusion 221 sequentially to connect the two.

[0054] Optionally, such as Figure 1 As shown, the suspension structure of the three-dimensional coiled core also includes an upper limit assembly 40, whose upper and lower ends respectively abut against the top of the three-dimensional coiled core 200 and the upper clamp 30. Through this arrangement, the upper clamp 30 and the top of the three-dimensional coiled core 200 are held in place by the upper limit assembly 40, thereby ensuring that the top of the three-dimensional coiled core 200 is firmly fixed and that the three-dimensional coiled core 200 maintains vertical stability after installation.

[0055] In an optional embodiment, such as Figure 1As shown, the upper limit assembly 40 includes a limiting plate 41 and a first pad (not shown). The lower side of the limiting plate 41 abuts against the top of the three-dimensional coiled core 200. The first pad is tensioned between the limiting plate 41 and the upper clamp 30. The first pad ensures tight abutment between the limiting plate 41 and the top of the three-dimensional coiled core 200. Optionally, the three-dimensional coiled core 200 can be adapted to different heights by replacing the first pad with one of different heights.

[0056] In another embodiment, the upper limit assembly 40 includes a limiting plate 41 and an adjusting member (not shown). The lower side of the limiting plate 41 abuts against the top of the three-dimensional coiled core 200, and the adjusting member is threadedly connected to the upper clamp 30 and can abut against the top of the limiting plate 41. With the above configuration, by screwing the adjusting member, the adjusting member is pressed against the limiting plate 41, thereby making the limiting plate 41 press against the top of the three-dimensional coiled core 200. The adjusting member is more convenient to adjust than the first pad solution, and there is no need to replace the adjusting member for three-dimensional coiled cores 200 of different heights.

[0057] Optionally, such as Figure 3 and Figure 4 As shown, each three-dimensional coiled iron core 200 has a coil 300 surrounding its core column 210. The lower clamp 10 includes a body 11 and a second support portion 12. The body 11 is triangular and box-shaped and connected to multiple connecting portions 22. Each corner of the body 11 is provided with several second support portions 12, which are connected to the side wall of the body 11 at an angle. The several second support portions 12 are used to support the coil 300 together. With the above arrangement, after the coil 300 is installed, its bottom can be supported by several second support portions 12. That is to say, the lower clamp 10 serves to support both the coil 300 and the three-dimensional coiled iron core 200, and the gravity applied by the two functions acts independently on the lower clamp 10, avoiding the three-dimensional coiled iron core 200 exerting a force on the coil 300.

[0058] Optionally, such as Figure 4 As shown, the suspension structure of the three-dimensional coiled core also includes pressure pins 50. Each coil 300 is provided with several pressure pins 50. The pressure pins 50 are connected to the upper clamp 30 and are used to abut against the insulating pressure block 310 on the top of the corresponding coil 300. Through the above arrangement, the top of the coil 300 is pressed tightly by several pressure pins 50, ensuring the vertical installation stability of the coil 300 and preventing the coil 300 from shaking.

[0059] It should be noted that, as Figure 4 As shown, insulating blocks 310 are provided at the top and bottom of the coil 300 to prevent short circuits caused by energization between the coil 300 and the metal parts at both ends (such as the pressure pins 310 or the second support part 12, etc.).

[0060] This embodiment also provides a method for installing a three-dimensional wound core, which uses the suspension structure of the three-dimensional wound core described above to install the three-dimensional wound core 200. The method for installing the suspension structure of the three-dimensional wound core includes:

[0061] S10: Connect the bottom of the multiple connecting parts 22 to the lower clamp 10;

[0062] S20: The three-dimensional coiled iron core 200 is installed on the support member 20 so that the first support part 21 supports the three-dimensional coiled iron core 200;

[0063] S30: The upper clamp 30 is placed on top of the three-dimensional coiled iron core 200, and the tops of the multiple connecting parts 22 are connected to the upper clamp 30.

[0064] S40: Wind the coil 300 onto the core column 210 corresponding to the three-dimensional coiled iron core 200, and assemble the body and lead wire;

[0065] S50: Install the upper limit assembly 40 between the three-dimensional coil core 200 and the upper clamp 30.

[0066] The above-mentioned method for installing a three-dimensional coiled iron core differs from that for a small three-dimensional coiled iron core. By installing the support member 20 on the lower clamp member 10, the first support part 21 supports the three-dimensional coiled iron core 200, so that the weight of the three-dimensional coiled iron core 200 is transmitted from the connecting part 22 to the lower clamp member 10, and is detached from the support of the coil 300, thus preventing the coil 300 from being damaged.

[0067] It should be noted that a winding mold needs to be installed before winding the coil 300, which is existing technology and will not be elaborated here.

[0068] Optionally, the vessel body can also be dried. This step can be performed between S40 and S50 or after S50, and is not limited here.

[0069] Optionally, step S12 is set between S10 and S20: a buffer is provided on the first support 21 to reduce friction on the bottom of the three-dimensional coiled core 200.

[0070] Optionally, step S11 is further included between S10 and S20: a second pad is placed between the first support 21 and the lower clamp 10, and step S41 is further included between S40 and S50: the second pad is removed. The above operations can alleviate the impact force of the large weight of the three-dimensional coiled iron core 200 on the support 20 during the installation process. After the installation is stable, the second pad is removed to ensure the suspension setting of the three-dimensional coiled iron core 200.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A suspension structure for a three-dimensional wound iron core, characterized in that, include: The lower clamp (10) and the support (20) include a first support part (21) and a plurality of connecting parts (22) connected to the first support part (21). The first support part (21) is used to support the three-dimensional coiled iron core (200) and is spaced apart from the bottom plate of the lower clamp (10). The bottom of the plurality of connecting parts (22) is connected to the lower clamp (10). The upper clamp (30) is fastened to the top of the three-dimensional coiled iron core (200), and the tops of the multiple connecting parts (22) are all connected to the upper clamp (30); The suspension structure of the three-dimensional coiled iron core also includes an upper limit assembly (40), the upper and lower ends of which respectively abut against the top of the three-dimensional coiled iron core (200) and the upper clamp (30); Each of the three-dimensional coiled iron cores (200) has a coil (300) surrounding its core column (210), and the lower clamp (10) includes: The main body (11) is triangular in shape and connected to the plurality of connecting parts (22); The second support part (12) is provided at each corner of the body (11). The second support part (12) is connected to the side wall of the body (11) at an angle. The second support part (12) is used to support the coil (300) together. The suspension structure of the three-dimensional coil core also includes pressure pins (50), and each coil (300) is provided with a number of pressure pins (50). The pressure pins (50) are connected to the upper clamp (30) and are used to abut against the insulating pressure block (310) on the top of the corresponding coil (300). The support member (20) is triangular, and two connecting parts (22) are provided at intervals at each corner of the support member (20). The two connecting parts (22) are used to jointly limit one of the core columns (210) of the three-dimensional coiled iron core (200). The first support portion (21) includes: The support plate (211) is triangular and is used to support the bottom of the three-dimensional coiled iron core (200); Three side plates (212) are connected one-to-one with the three sides of the support plate (211), and each side plate (212) is used to limit one side of the three-dimensional coiled iron core (200); The connecting part (22) has a protrusion (221) at the position where it connects with the upper clamp (30) and the lower clamp (10).

2. The suspension structure of the three-dimensional wound iron core according to claim 1, characterized in that, The upper limit assembly (40) includes a limiting plate (41) and a first pad. The lower side of the limiting plate (41) abuts against the top of the three-dimensional coiled core (200), and the first pad is tensioned between the limiting plate (41) and the upper clamp (30); or The upper limit assembly (40) includes a limiting plate (41) and an adjusting member. The lower side of the limiting plate (41) abuts against the top of the three-dimensional coil core (200). The adjusting member is threadedly connected to the upper clamp (30) and can abut against the top of the limiting plate (41).

3. A method for installing a three-dimensional wound iron core, characterized in that, The three-dimensional coiled iron core (200) is installed using the suspension structure of the three-dimensional coiled iron core as described in any one of claims 1-2. The suspension structure of the three-dimensional coiled iron core further includes an upper limit assembly (40), the upper and lower ends of which respectively abut against the top of the three-dimensional coiled iron core (200) and the upper clamp (30). The installation method of the suspension structure of the three-dimensional coiled iron core includes: S10: Connect the bottom of the plurality of connecting parts (22) to the lower clamp (10); S20: The three-dimensional coiled iron core (200) is mounted on the support member (20) so that the first support part (21) supports the three-dimensional coiled iron core (200); S30: Cover the top of the three-dimensional coiled iron core (200) with the upper clamp (30) and connect the tops of the plurality of connecting parts (22) to the upper clamp (30); S40: Wind the coil (300) onto the core column (210) corresponding to the three-dimensional coiled iron core (200) to assemble the body and lead wire; S50: Install the upper limit assembly (40) between the three-dimensional coil core (200) and the upper clamp (30).

4. The method for installing a three-dimensional wound core according to claim 3, characterized in that, The step S11 is further included between S10 and S20: a second pad is provided between the first support (21) and the lower clamp (10); Between S40 and S50, there is also step S41: removing the second pad.

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