High-capacity new energy transformer body assembling method and high-capacity new energy transformer
By combining a copper foil layer low-voltage coil and a continuous high-voltage coil with hoisting technology, the assembly problem of large-capacity new energy transformers has been solved, achieving efficient assembly of the transformer body and reducing manufacturing costs.
Patent Information
- Application Number
- CN202511873373.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-02-27
AI Technical Summary
Traditional high- and low-voltage layered coil structures are not suitable for large-capacity new energy transformers of 10000kVA and above and 66kV, which makes it impossible for traditional assembly methods to effectively assemble high- and low-voltage coils.
The low-voltage coil is wound with copper foil layer structure and insulation, and the high-voltage coil is wound with continuous structure. The low-voltage coil is placed into the high-voltage coil by a lifting tool and then simultaneously mounted on the iron core column.
The assembly of the transformer body for a 66kV high-capacity new energy transformer was achieved, reducing the transformer manufacturing cost.
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Figure CN121583746A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of oil-immersed transformers, and more particularly to a large-capacity new energy transformer body assembly method and a large-capacity new energy transformer. BACKGROUND
[0002] With the continuous development and progress of fan technology, the required supporting transformer capacity and voltage also increase accordingly. Considering the safe operation of the transformer, the traditional new energy transformer high-low voltage layer coil structure is no longer suitable for 10000kVA and above 66kV large-capacity new energy transformers. However, in the prior art, the structure of the low-voltage coil and the high-voltage coil in the large-capacity new energy transformer is adjusted, so that the traditional high-low voltage coil sleeving method is not convenient for assembling the adjusted high-low voltage coil.
[0003] In summary, how to assemble the large-capacity new energy transformer body is a problem that needs to be solved by the technical personnel in the field at present. SUMMARY
[0004] Therefore, the purpose of the present application is to provide a large-capacity new energy transformer body assembly method and a large-capacity new energy transformer to assemble the large-capacity new energy transformer body.
[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:
[0006] A large-capacity new energy transformer body assembly method, comprising: winding a low-voltage coil in a copper foil layer structure, the low-voltage coil having first and last copper bar exit heads; winding an insulating piece around the outer circle of the low-voltage coil; winding a high-voltage coil in a continuous structure; lifting the high-voltage coil to a certain height; lifting the low-voltage coil by a first lifting device, placing the low-voltage coil into the high-voltage coil from the end of the low-voltage coil farthest from the first and last copper bar exit heads; removing the first lifting device; lifting the low-voltage coil and the high-voltage coil by a second lifting device, and synchronously sleeving the low-voltage coil and the high-voltage coil on the iron core column.
[0007] In some embodiments, the high-voltage coil is lifted to a certain height, specifically including: placing insulating pads at the bottom of the high-voltage coil, the insulating pads being a plurality of and being distributed in sequence along the circumference of the high-voltage coil; the insulating pads have a lifting distance for separating the first lifting device from the bottom of the low-voltage coil.
[0008] In some embodiments, the insulating pads are wood blocks or epoxy glass blocks.
[0009] In some embodiments, the first lifting tool comprises a tray and a first lifting cable; the tray is formed by at least two supporting members crossing each other so as to support the low-voltage coil from the bottom of the low-voltage coil.
[0010] In some embodiments, a lifting ring is arranged on the tray and connected with the first lifting cable; the lifting ring is in sliding connection with the tray; in the case of lifting the low-voltage coil, the lifting ring is located inside the low-voltage coil.
[0011] In some embodiments, after the first lifting tool is removed, the high-voltage coil and the low-voltage coil are kept in synchronous elevation by the insulating pad; the insulating pad has an elevation distance for placing the second lifting tool at the bottom of the high-voltage coil and the low-voltage coil.
[0012] In some embodiments, the second lifting tool comprises at least two lifting tool assemblies, and the at least two lifting tool assemblies are connected with a second lifting cable; the at least two lifting tool assemblies are structurally identical.
[0013] In some embodiments, the lifting tool assembly comprises a bottom supporting member and a supporting column; the supporting column is in sliding connection with the top end of the bottom supporting member; the bottom supporting member is used for supporting the bottom surface of the low-voltage coil and the high-voltage coil, and the supporting column is used for abutting against the outer ring of the high-voltage coil; and the second lifting cable is connected with the top of the supporting column.
[0014] In some embodiments, the low-voltage coil in the copper foil layer structure is formed by alternately stacking a plurality of copper foil conductor layers and a plurality of insulating layers; and the high-voltage coil in the continuous structure is formed by continuously winding one or a plurality of flat wires.
[0015] A large-capacity new energy transformer comprises a low-voltage coil in a copper foil layer structure and a high-voltage coil in a continuous structure, which are assembled by the large-capacity new energy transformer body assembly method.
[0016] The large-capacity new energy transformer body assembly method provided by the present application first forms a low-voltage coil with first and last copper discharge heads by winding in a copper foil layer structure, winds an insulating member between the high-voltage coil and the low-voltage coil around the outer ring of the low-voltage coil, and forms a high-voltage coil by winding in a continuous structure; in the assembly process, the high-voltage coil is elevated, the low-voltage coil is lifted by a first lifting tool and placed into the high-voltage coil from the end far from the first and last copper discharge heads, then the first lifting tool is removed, the low-voltage coil and the high-voltage coil are lifted by a second lifting tool and synchronously fitted on the iron core column, so as to realize the body assembly of a 66Kv large-capacity transformer, provide a transformer type formed by a low-voltage coil in a copper foil layer structure and a high-voltage coil in a continuous structure, and reduce the manufacturing cost of the transformer. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.
[0018] Figure 1 The structure schematic diagram of the low-voltage coil provided for the embodiments of the present application is shown in the figure.
[0019] Figure 2 The structure schematic diagram of the high-voltage coil provided for the embodiments of the present application is shown in the figure.
[0020] Figure 3 The schematic diagram of the un-assembled iron core column provided for the embodiments of the present application is shown in the figure.
[0021] Figure 4 The structure schematic diagram of the first lifting appliance provided for the embodiments of the present application is shown in the figure.
[0022] Figure 5 The structure schematic diagram of the second lifting appliance provided for the embodiments of the present application is shown in the figure.
[0023] Figure 6 The schematic diagram of the first lifting appliance hoisting the low-voltage coil provided for the embodiments of the present application is shown in the figure.
[0024] Figure 7 The schematic diagram of the insulating pad block provided for the embodiments of the present application is shown in the figure.
[0025] Figure 8 The schematic diagram of the first lifting appliance hoisting the low-voltage coil and the high-voltage coil provided for the embodiments of the present application is shown in the figure.
[0026] Figure 9 The schematic diagram of the second lifting appliance hoisting the high-voltage coil and the low-voltage coil provided for the embodiments of the present application is shown in the figure.
[0027] Figure 10 The schematic diagram of the large-capacity new energy transformer body assembly method provided for the embodiments of the present application is shown in the figure.
[0028] Explanation of reference signs:
[0029] 100 - low-voltage coil, 110 - first and last copper bar head;
[0030] 200 - high-voltage coil;
[0031] 300 - iron core column;
[0032] 400 - insulating pad block;
[0033] 510 - tray, 511 - lifting eye, 520 - first sling;
[0034] 611 - bottom support, 612 - support column, 620 - second sling. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.
[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments, and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms "a," "an," and "the" are intended to include both the singular and plural forms, unless the context clearly indicates otherwise. It will be further understood that "one or more" means one, two, or more than two; "and / or" describes the associated objects in the conjunction relationship, which means that there can be three kinds of relationships; for example, A and / or B, which means that A exists alone, A and B exist together, B exists alone, and A, B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects.
[0037] In the present specification, the reference "one embodiment" or "some embodiments" means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in further some embodiments" and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but not limited to", unless otherwise specifically emphasized.
[0038] The plurality of embodiments of the present application refers to more than or equal to two. It should be noted that in the description of the embodiments of the present application, the terms "first", "second" and the like are only used for distinguishing the purpose of description, and cannot be understood as indicating or implying relative importance, nor can be understood as indicating or implying order.
[0039] In the wind power and photovoltaic industry in the early stages of development, the capacity of transformer is relatively small, and the voltage is 35kv and below. In the small capacity transformer, the high and low voltage coils are basically layer type coils, and the high and low voltage coil sleeve winding structure is used. The low voltage coil is wound on the mold with copper foil, and the high voltage coil is directly wound on the low voltage coil with paper wrapped flat copper wire. After the high and low voltage coils are wound, they are directly sleeved on the iron core column to complete the assembly of the small capacity transformer body.
[0040] With the continuous development and progress of the fan technology, the required supporting transformer capacity and voltage also increase accordingly. Considering the safe operation of the transformer, the traditional new energy transformer high and low voltage layer type coil structure is no longer suitable for 10000kVA and above 66kV new energy transformer. For large capacity new energy transformer, it is more suitable for low voltage coil copper foil layer type and high voltage coil continuous type structure. However, the low voltage coil copper foil layer type has copper bar leading out at the first and last ends of the coil, which leads to the diameter of the low voltage coil head being larger than the inner diameter of the high voltage coil, and the traditional power transformer cannot be used in the sequential sleeving method.
[0041] Therefore, the embodiment of the present application provides a large capacity new energy transformer body assembly method for assembling the large capacity new energy transformer body.
[0042] The embodiment of the present application provides a large capacity new energy transformer body assembly method, which comprises:
[0043] S100, winding to form a low voltage coil 100.
[0044] As shown in Figure 1 , wherein Figure 1 a is a front view of the low voltage coil 100, Figure 1 b is a top view of the low voltage coil 100, and the low voltage coil 100 is wound in a copper foil layer type structure. A plurality of copper foil conductor layers and a plurality of insulating layers are alternately stacked to form a low voltage coil 100 with excellent heat dissipation performance, high mechanical strength and space utilization. After winding, the first and last copper bar heads 110 are formed, and the size of the first and last copper bar heads 110 is larger than the inner diameter of the high voltage coil 200.
[0045] S200, winding an insulating part to the outer circle of the low voltage coil 100.
[0046] The insulating part is wrapped on the outside of the low voltage coil 100 to realize the insulation between the low voltage coil 100 and the high voltage coil 200.
[0047] S300, winding to form a high voltage coil 200.
[0048] As shown in Figure 2 , wherein Figure 2 a is a front view of the high voltage coil 200, Figure 2b is a top view of the high-voltage coil 200, which is wound in a continuous structure to form the high-voltage coil 200, and is wound continuously by one or more flat wires through a turning technique to form a series of wire segments without welding joints between the wire segments, so that the high-voltage coil 200 has excellent mechanical strength and short-circuit resistance, and has excellent heat dissipation performance.
[0049] S400, the high-voltage coil 200 is raised to a certain height.
[0050] As shown in Figure 7 , by placing a plurality of insulating pads 400 at the bottom of the high-voltage coil 200, and a plurality of insulating pads 400 are sequentially and spaced distributed along the circumference of the high-voltage coil 200, the insulating pads 400 have a lifting distance to separate the first lifting device from the bottom of the low-voltage coil 100, so that after the low-voltage coil 100 is placed inside the high-voltage coil 200, the first lifting device is removed from the bottom of the low-voltage coil 100.
[0051] In some embodiments, the insulating pad 400 is a wooden block or an epoxy glass block, which has good insulating performance and supporting strength to achieve stable support.
[0052] S500, hoisting the low-voltage coil 100 to place it inside the high-voltage coil 200.
[0053] As shown in Figure 4 and Figure 6 , wherein Figure 4 a is a front view of the first lifting device, Figure 4 b is a top view of the first lifting device, Figure 6 a is a front view of the first lifting device hoisting the low-voltage coil 100, Figure 6 b is a top view of the first lifting device hoisting the low-voltage coil 100.
[0054] The first lifting device includes a tray 510 and a first lifting cable 520, the tray 510 is formed by at least two supporting members intersecting, and the tray 510 can support the low-voltage coil 100 at the bottom of the low-voltage coil 100.
[0055] For example, as shown in Figure 4 , the tray 510 can be formed by two supporting members intersecting to ensure the stability of the support.
[0056] The tray 510 is provided with a lifting ring 511 connected with the first lifting cable 520, the lifting ring 511 is in sliding connection with the tray 510, so that the lifting ring 511 can adjust the stress point of the tray 510 to ensure the stability during hoisting the low-voltage coil 100 by the first lifting device; during hoisting the low-voltage coil 100, as Figure 6As shown, the lifting ring 511 is located inside the low-voltage coil 100, allowing the low-voltage coil 100 to be placed into the high-voltage coil 200 from the end of it furthest from the first and last copper outlet 110.
[0057] like Figure 8 As shown, Figure 8 a is a front view of the low-voltage coil 100 being hoisted into the high-voltage coil 200 using the first lifting device. Figure 8 b is Figure 8 The top view of a is used to avoid interference between the first and last copper discharge heads 110 of the low-voltage coil 100 and the high-voltage coil 200. The assembly of the low-voltage coil 100 and the high-voltage coil 200 is achieved by the hoisting of the first lifting device.
[0058] S600, Remove the first lifting device.
[0059] This allows the first lifting device to detach from the bottom of the low-voltage coil 100, so that the low-voltage coil 100 and the high-voltage coil 200 can be lifted subsequently using the second lifting device.
[0060] S700, hoisting low-voltage coil 100 and high-voltage coil 200 to assemble them onto iron core column 300.
[0061] The low-voltage coil 100 and the high-voltage coil 200 are hoisted by the second lifting tool, and after the first lifting tool is removed, the insulating pad 400 keeps the high-voltage coil 200 and the low-voltage coil 100 raised synchronously, so that the high-voltage coil 200 and the low-voltage coil 100 can be lifted from the bottom by the second lifting tool later.
[0062] like Figure 5 As shown, where Figure 5 a is a front view of the lifting device assembly in the second lifting device. Figure 5 b is a side view of the lifting device assembly in the second lifting device. Figure 5 c is a top view of the spreader assembly in the second spreader, which includes at least two spreader assemblies with identical structures, and the at least two spreader assemblies are connected together to the second spreader.
[0063] For example, such as Figure 9 As shown, the second lifting device in this application includes two lifting device components to achieve stable lifting; of course, it can also be lifted simultaneously by three, four or more lifting device components, and this application embodiment does not limit this.
[0064] The lifting assembly includes a base support 611 and a support column 612, with the support column 612 slidably connected to the top of the base support 611 to adjust the support area of the base support 611, ensuring stable support of the low-voltage coil 100 and the high-voltage coil 200 by the base support 611, and abutting against the outer ring of the high-voltage coil 200 by the support column 612. A second sling 620 is connected to the top of the support column 612 for stable lifting.
[0065] like Figure 9 As shown, where Figure 9 a is a front view of the second lifting device hoisting the low-voltage coil 100 and the high-voltage coil 200. Figure 9 b is Figure 9 The top view of a shows that the bottom surfaces of the low-voltage coil 100 and the high-voltage coil 200 are supported by the bottom support 611 and abutted by the support column 612. The low-voltage coil 100 and the high-voltage coil 200 are lifted by the second sling 620 and assembled onto the iron core column 300.
[0066] like Figure 10 As shown, where Figure 10 a is the front view after assembly. Figure 10 b is a top view of the completed assembly, thus realizing the assembly of the transformer body for a 66kV high-capacity new energy transformer.
[0067] The large-capacity new energy transformer body assembly method provided in this application realizes the body assembly of a 66kV large-capacity transformer, thereby providing transformer types formed by low-voltage coils with copper foil layer structure and high-voltage coils with continuous structure, reducing transformer manufacturing costs.
[0068] This application also provides a large-capacity new energy transformer, which includes a low-voltage coil 100 with a copper foil layer structure and a high-voltage coil 200 with a continuous structure, and is assembled using the large-capacity new energy transformer body assembly method described above.
[0069] Since the above-mentioned large-capacity new energy transformer body assembly method has the above-mentioned technical effects, and the above-mentioned large-capacity new energy transformer is formed by adopting the above-mentioned large-capacity new energy transformer body assembly method, the above-mentioned large-capacity new energy transformer also has the corresponding technical effects, which will not be elaborated here.
[0070] The above description of the embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A large-capacity new energy transformer body assembly method, characterized in that, The application relates to a winding method of a transformer, which comprises the following steps: a low-voltage coil (100) is wound in a copper foil layer structure, and the low-voltage coil (100) is provided with first and last copper discharge heads (110); an insulating piece is wound to the outer circle of the low-voltage coil (100); a high-voltage coil (200) is wound in a continuous structure; the high-voltage coil (200) is raised to a certain height; the low-voltage coil (100) is lifted by a first lifting tool, and the low-voltage coil (100) is placed into the high-voltage coil (200) from the end of the low-voltage coil (100) far away from the first and last copper discharge heads (110); the first lifting tool is removed; the low-voltage coil (100) and the high-voltage coil (200) are lifted by a second lifting tool, and the low-voltage coil (100) and the high-voltage coil (200) are synchronously sleeved on an iron core column (300).
2. The large-capacity new energy transformer body assembling method according to claim 1, characterized in that, The high-voltage coil (200) is raised to a certain height, and the method specifically comprises the following steps: insulating pads (400) are arranged at the bottom of the high-voltage coil (200), the insulating pads (400) are distributed in sequence along the circumference of the high-voltage coil (200), and the insulating pads (400) have a pad height distance for separating the first lifting tool from the bottom of the low-voltage coil (100). The insulating pads (400) are wood blocks or epoxy glass blocks.
3. The large-capacity new energy transformer body assembling method according to claim 2, characterized in that, The first lifting tool comprises a tray (510) and a first lifting cable (520); 4. The large-capacity new energy transformer body assembling method according to claim 1, characterized in that, the tray (510) is formed by at least two supporting pieces in cross shape, so that the tray (510) supports the low-voltage coil (100) from the bottom of the low-voltage coil (100). The tray (510) is provided with a lifting ring (511) connected with the first lifting cable (520); 5. The method of claim 4, wherein, the lifting ring (511) is in sliding connection with the tray (510); in the case of lifting the low-voltage coil (100), the lifting ring (511) is located in the interior of the low-voltage coil (100). After the first lifting tool is removed, the high-voltage coil (200) and the low-voltage coil (100) are synchronously raised by the insulating pads (400); 6. The large-capacity new energy transformer body assembling method according to claim 2, characterized in that, the insulating pads (400) have a pad height distance for placing the second lifting tool on the bottom of the high-voltage coil (200) and the low-voltage coil (100). The second lifting tool comprises at least two lifting tool assemblies, and the at least two lifting tool assemblies are jointly connected with a second lifting cable (620); 7. The method of claim 6, wherein, the at least two lifting tool assemblies are of the same structure. The lifting tool assembly comprises a bottom supporting piece (611) and a supporting column (612); 8. The large-capacity new energy transformer body assembling method according to claim 7, characterized in that, the supporting column (612) is in sliding connection with the top end of the bottom supporting piece (611); the bottom supporting piece (611) is arranged on the bottom surface of the low-voltage coil (100) and the high-voltage coil (200), and the supporting column (612) is arranged on the outer circle of the high-voltage coil (200); the second lifting cable (620) is connected with the top of the supporting column (612). The low-voltage coil (100) in the copper foil layer structure is formed by alternately stacking a plurality of copper foil conductor layers and a plurality of insulating layers; 9. The method of claim 1, wherein, the high-voltage coil (200) in the continuous structure is formed by continuously winding one or a plurality of flat wires. The application further relates to a winding device of a transformer, which comprises the following parts:
10. A large capacity new energy transformer, characterized in that, The low-voltage coil (100) of the copper foil layer structure and the high-voltage coil (200) of the continuous structure are assembled by the large-capacity new energy transformer body assembling method as claimed in claims 1-9.