Amorphous dry-type transformer with shockproof function and assembly method

Abstract

The present invention provides an amorphous dry-type transformer with a shockproof function and an assembly method. The transformer comprises an upper frame, an iron core assembly, and a lower frame, arranged sequentially from top to bottom. The iron core assembly comprises an upper iron yoke and a lower iron yoke. A suspension mechanism is connected between the upper and lower frames. The suspension mechanism comprises an upper clamping plate and a lower clamping plate. The upper iron yoke is clamped between the upper and lower clamping plates, and a first elastic member is provided between the upper and lower clamping plates. The suspension mechanism separates the lower iron yoke from the lower frame to prevent vibrations from the lower frame from being directly transmitted to the lower iron yoke. The present invention prevents ground vibrations from being directly transmitted to the iron core, providing excellent shockproofing effects.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power equipment, and in particular relates to an amorphous dry-type transformer with a shockproof function and an assembly method thereof. Background Art

[0002] Currently, most transformer cores are secured using a base support. This means the core's weight falls vertically onto the base, meeting strength requirements as long as the base material remains unchanged. However, this rigid structure can vibrate due to ground vibration. Furthermore, transformers used in rail transit are subject to more frequent vibrations (such as ground vibrations from passing trains and vibrations from equipment along the way). Amorphous alloy cores are highly sensitive to vibrations. Excessive vibrations can create voids within the core, increasing the core's magnetic resistance and the transformer's no-load losses. Furthermore, the voids within the amorphous alloy core can also cause vibrations, which can grow larger and larger, seriously impacting the operation of rail transit amorphous alloy transformers. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide an amorphous dry-type transformer with shockproof function and an assembly method, so as to prevent ground vibration from being directly transmitted to the iron core and achieve good shockproof effect.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An amorphous dry-type transformer with a shockproof function comprises an upper frame, an iron core group, and a lower frame arranged in sequence from top to bottom, wherein the iron core group comprises an upper iron yoke and a lower iron yoke;

[0006] A suspension mechanism is connected between the upper frame and the lower frame, and the suspension mechanism includes an upper clamping plate and a lower clamping plate. The upper iron yoke is clamped between the upper clamping plate and the lower clamping plate, and a first elastic member is provided between the upper iron yoke and the lower clamping plate. The suspension mechanism separates the lower iron yoke and the lower frame from each other so that the vibration of the lower frame is not directly transmitted to the lower iron yoke.

[0007] Preferably, the upper splint is fixedly connected to the upper frame, the upper splint and the lower splint, the upper frame and the lower splint are connected by fasteners, and the upper splint and the lower splint are combined to form a accommodating space, and the upper iron yoke is arranged in the accommodating space.

[0008] Preferably, the fastener is configured as a "U"-shaped screw.

[0009] Preferably, the suspension mechanism further includes a plurality of pull rods, and the plurality of pull rods are arranged between the upper frame and the lower frame.

[0010] Preferably, the core group is configured as a three-winding core group, and the three-winding core groups are distributed in a triangular shape;

[0011] The upper frame includes a plurality of first short plates and a first long plate, and the lower frame includes a plurality of second short plates and a second long plate. The plurality of first short plates and the first long plate, the second short plates and the second long plate form a triangular structure.

[0012] Preferably, the pull rod includes a long pull rod and a short pull rod, the short pull rod is provided between the first short plate and the second short plate, and the long pull rod is provided between the first long plate and the second long plate.

[0013] Preferably, a base is provided below the lower frame, a supporting plate is provided on a side of the base facing the core assembly, and a second elastic member is provided between the supporting plate and the lower iron yoke.

[0014] Preferably, the support plate is provided with a first groove, one end of the second elastic member is embedded in the first groove, the other end of the second elastic member is provided with a second groove, and the lower iron yoke is at least partially embedded in the second groove.

[0015] A method for assembling an amorphous dry-type transformer with a shockproof function as described above comprises the following steps:

[0016] S1, winding the core group to form an upper iron yoke and a lower iron yoke of the core group;

[0017] S2. Setting a suspension mechanism, and setting the upper iron yoke on the suspension mechanism, and providing a first elastic member between the upper iron yoke and the suspension mechanism;

[0018] S3. The suspension mechanism is arranged on the upper frame, and the upper frame support is arranged above the lower frame so that the lower iron yoke is relatively separated from the lower frame.

[0019] Preferably, step S3 further includes a second elastic member, which is arranged between the lower iron yoke and the base.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In this solution, a suspension mechanism is connected between the upper frame and the lower frame, and the suspension mechanism includes an upper splint and a lower splint. The upper iron yoke of the iron core group is clamped between the upper splint and the lower splint, and a first elastic member is provided between the upper iron yoke and the lower splint, which plays a shock-absorbing and buffering role for the upper iron yoke. The suspension mechanism suspends the entire iron core group, and the lower iron yoke of the iron core group is separated from the lower frame. A second elastic member for shock absorption is provided between the lower iron yoke and the base of the lower frame, so that the vibration of the lower frame is not directly transmitted to the lower iron yoke, but the vibration of the lower frame is transmitted to the upper frame through the pull rod, thereby avoiding the ground vibration from being directly transmitted to the iron core, and having a good shock-proof effect.

[0022] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features described in detail below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be listed here one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0026] in:

[0027] 1- iron core assembly, 11- upper iron yoke, 12- lower iron yoke; 2- upper frame, 21- upper splint, 22- lower splint; 3- lower frame; 4- short pull rod; 5- long pull rod; 6- base, 61- support plate; 7- first elastic member; 8- second elastic member; 9- "U"-shaped screw. DETAILED DESCRIPTION

[0028] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] Example 1

[0032] like Figures 1 to 2 As shown, this embodiment discloses an amorphous dry-type transformer with a shockproof function, including an upper frame 2, an iron core group 1, and a lower frame 3 arranged in sequence from top to bottom. The iron core group 1 includes an upper iron yoke 11 and a lower iron yoke 12.

[0033] A suspension mechanism is connected between the upper frame 2 and the lower frame 3, and the suspension mechanism includes an upper splint 21 and a lower splint 22. The upper iron yoke 11 is clamped between the upper splint 21 and the lower splint 22, and a first elastic member 7 (a shock-absorbing pad in this embodiment) is provided between the upper iron yoke 11 and the lower splint 22. The suspension mechanism separates the lower iron yoke 12 and the lower frame 3 from each other, so that the vibration of the lower frame 3 is not directly transmitted to the lower iron yoke 12, but the vibration of the lower frame 3 is transmitted to the upper frame 2 through the suspension mechanism, thereby avoiding the ground vibration being directly transmitted to the iron core, and having a good shock-proof effect.

[0034] Preferably, in this embodiment, the upper clamping plate 21 is fixedly connected to the upper frame 2, the upper frame 2 is fastened to the lower clamping plate 22 by fasteners, and the upper clamping plate 21 is fastened to the lower clamping plate 22 by fasteners, which are configured as "U"-shaped screws 9. The upper clamping plate 21 and the lower clamping plate 22 are combined to form a receiving space, and the upper iron yoke 11 is disposed in the receiving space.

[0035] Specifically in this embodiment, the upper splint 21 is composed of three "Z"-shaped plates with equal spacing. The upper ends of the "Z"-shaped plates are welded to the upper frame 2, and the lower ends of the three "Z"-shaped plates are connected in one piece. The lower splint 22 is composed of three "U"-shaped plates with equal spacing. One side of the "U"-shaped plate is connected in one piece and is fastened to the lower end of the "Z"-shaped plate of the upper splint 21 through three "U"-shaped screws 9. The tensile strength of the "U"-shaped screw 9 is better than that of a conventional screw and can better adapt to a vibration environment. The other side of the "U"-shaped plate is fastened to the upper frame 2 through a "U"-shaped screw 9. The upper splint 21 and the lower splint 22 of this embodiment are both fastened to the upper frame 2, and the upper iron yoke 11 of the core group 1 is arranged in the accommodating space formed by the upper splint 21 and the lower splint 22. At this point, the gravity of the core group 1 is transmitted to the upper frame 2 by the upper clamping plate 21 and the lower clamping plate 22, and then transmitted to the lower frame 3 by the upper frame 2, so that the frame structure of the entire transformer can support the gravity of the core group 1 and prevent the core group 1 from directly contacting the lower frame 3, thereby avoiding vibration from being directly transmitted from the lower frame 3 to the core group 1.

[0036] In this embodiment, the core assembly 1 is preferably configured as a three-winding core assembly 1, arranged in a triangular configuration. The upper frame 2 includes a plurality of first short plates and a first long plate, while the lower frame 3 includes a plurality of second short plates and a second long plate. The plurality of first short plates and the first long plates, and the second short plates and the second long plates, form a triangular structure. The lower frame 3 also includes long tie rods 5 and short tie rods 4, with the short tie rods 4 positioned between the first and second short plates, and the long tie rods 5 positioned between the first and second long plates. The upper frame 2 and the lower frame 3 are securely connected via the long and short tie rods 4.

[0037] Specifically, in this embodiment, the core group 1 of the three windings is evenly spaced and distributed in a triangle. The positions of the first section plate and the second short plate correspond to the corner positions of the triangle, and the positions of the first long plate and the second long plate correspond to the side positions of the triangle. The first short plate and the second short plate are both provided with a first connecting plate, and the short pull rod 4 is vertically provided on the two first connecting plates corresponding to the upper and lower parts. The first long plate and the second long plate are both provided with a second connecting plate, and the long pull rod 5 is vertically provided on the two second connecting plates corresponding to the upper and lower parts, and the lower clamping plate 22 is fastened to the second connecting plate of the first long plate by a "U"-shaped screw 9. A short pull rod 4 is provided between the first short plate and the second short plate corresponding to the corner positions of the triangle, and a long pull rod 5 is provided between the first long plate and the second long plate corresponding to the side positions of the triangle. Such a mechanical structure is more suitable for the transmission of force, so that the gravity of the entire core group 1 is evenly transmitted from the double frame from top to bottom to the lower frame 3, and then to the ground, thereby improving the stability of the transformer.

[0038] Preferably, in this embodiment, a base 6 is provided under the lower frame 3, and a support plate 61 is provided on the side of the base 6 facing the core group 1, and the support plate 61 is provided with a first groove, and a second elastic member 8 (a shock-absorbing rubber in this embodiment) is provided between the support plate 61 and the lower iron yoke 12, one end of the second elastic member 8 is embedded in the first groove of the support plate 61, and the other end of the second elastic member 8 is provided with a second groove, and the lower iron yoke 12 is at least partially embedded in the second groove of the second elastic member 8.

[0039] Specifically, in this embodiment, a base 6 with enhanced mechanical strength is provided beneath the lower frame 3, further strengthening the mechanical properties of the entire transformer frame structure. The first groove of the support plate 61 and the second groove of the second elastic member 8 form a "U" shape, ensuring a more secure fit between the support plate 61 and the second elastic member 8, and between the second elastic member 8 and the lower yoke 12. This also provides both vertical and horizontal cushioning and vibration reduction, enhancing the transformer's shockproofing capabilities.

[0040] In this embodiment, the weight of the core assembly 1 is first borne by the upper and lower plates 21, 22, and then transmitted to the upper frame 2, which is securely connected to the upper and lower plates 21, 22. The upper frame 2 then evenly transmits the borne weight to the lower frame 3 and base 6 via short tie rods 4 and long tie rods 5, thereby suspending the entire core assembly 1. The core assembly 1 is not in direct contact with the lower frame 3 and base 6. Ground vibrations are transmitted from the base 6 and lower frame 3 via the short tie rods 4 and long tie rods 5 to the upper frame 2, and then to the upper and lower plates 21, 22. During this transmission process, the vibrations gradually decrease and weaken. The first elastic member 7 disposed between the core assembly 1 and the lower plate 22 and the second elastic member 8 disposed between the core assembly 1 and the base 6 further act as a buffer and shock absorber, so that the vibrations experienced by the core assembly 1 are far less than those experienced by the core in direct contact with the lower frame 3 or base 6 in a conventional transformer.

[0041] In order to better understand this embodiment, a method for assembling an amorphous dry-type transformer with a shockproof function as described above is provided, comprising the following steps:

[0042] S1 . Winding the core assembly 1 to form an upper iron yoke 11 and a lower iron yoke 12 of the core assembly 1 .

[0043] S2. Set up a suspension mechanism, and set the upper iron yoke 11 on the suspension mechanism, and a first elastic member 7 is provided between the upper iron yoke 11 and the suspension mechanism; specifically, install an upper clamping plate 21 and a lower clamping plate 22 on the upper iron yoke 11 of the iron core group 1, and place a shock-absorbing pad between the lower clamping plate 22 and the upper iron yoke 11, then tighten the upper clamping plate 21 and the lower clamping plate 22 to lock the upper iron yoke 11.

[0044] S3. Set the suspension mechanism on the upper frame 2, and support the upper frame 2 above the lower frame 3 so that the lower iron yoke 12 and the lower frame 3 are relatively separated; specifically, assemble the upper frame 2 on the core group 1, and weld the upper splint 21 to the upper frame 2, then lift the core group 1 with the upper frame 2 assembled, pre-place shock-absorbing glue on the support plate 61 of the base 6, and assemble the base 6 and the lower frame 3, then move the lifted core group 1 to the lower frame 3, align the bottom of the lower iron yoke 12 with the position of the shock-absorbing glue, then assemble the core group 1 and the lower frame 3, and finally connect the upper frame 2 and the lower frame 3 together through the short pull rod 4 and the long pull rod 5 to complete the assembly of the entire transformer.

[0045] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An amorphous dry-type transformer with shockproof function, characterized in that: It includes an upper frame, an iron core group, and a lower frame arranged in sequence from top to bottom, wherein the iron core group includes an upper iron yoke and a lower iron yoke; A suspension mechanism is connected between the upper frame and the lower frame, the suspension mechanism comprising an upper clamping plate and a lower clamping plate, the upper iron yoke is clamped between the upper clamping plate and the lower clamping plate, and a first elastic member is provided between the upper iron yoke and the lower clamping plate. The suspension mechanism separates the lower iron yoke from the lower frame so that vibration of the lower frame is not directly transmitted to the lower iron yoke; The upper clamping plate is fixedly connected to the upper frame, and the upper clamping plate and the lower clamping plate, as well as the upper frame and the lower clamping plate, are all connected by fasteners. The upper clamping plate and the lower clamping plate are combined to form an accommodating space, and the upper iron yoke is arranged in the accommodating space; The suspension mechanism further includes a plurality of pull rods, and the plurality of pull rods are arranged between the upper frame and the lower frame; A base is provided below the lower frame, a supporting plate is provided on a side of the base facing the core assembly, and a second elastic member is provided between the supporting plate and the lower iron yoke.

2. The amorphous dry-type transformer with shockproof function according to claim 1, characterized in that: The fastener is configured as a "U"-shaped screw.

3. The amorphous dry-type transformer with shockproof function according to claim 1, characterized in that: The core group is configured as a three-winding core group, and the three-winding core groups are distributed in a triangle shape; The upper frame includes a plurality of first short plates and a first long plate, and the lower frame includes a plurality of second short plates and a second long plate. The plurality of first short plates and the first long plate, the second short plates and the second long plate form a triangular structure.

4. The amorphous dry-type transformer with shockproof function according to claim 3, characterized in that: The pull rod includes a long pull rod and a short pull rod. The short pull rod is arranged between the first short plate and the second short plate, and the long pull rod is arranged between the first long plate and the second long plate.

5. The amorphous dry-type transformer with shockproof function according to claim 1, characterized in that: The support plate is provided with a first groove, one end of the second elastic member is embedded in the first groove, the other end of the second elastic member is provided with a second groove, and the lower iron yoke is at least partially embedded in the second groove.

6. An assembly method, characterized in that: An amorphous dry-type transformer with a shockproof function according to any one of claims 1 to 5, comprising the following steps: S1, winding the core group to form an upper iron yoke and a lower iron yoke of the core group; S2. Setting a suspension mechanism, and setting the upper iron yoke on the suspension mechanism, and providing a first elastic member between the upper iron yoke and the suspension mechanism; S3. The suspension mechanism is arranged on the upper frame, and the upper frame support is arranged above the lower frame so that the lower iron yoke is relatively separated from the lower frame.

7. An assembly method according to claim 6, characterized in that: In step S3, a second elastic member is also included, and the second elastic member is arranged between the lower iron yoke and the base.

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