Stereoscopic open roll iron core dry-type transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a three-dimensional open roll iron core dry-type transformer which comprises an upper clamping plate, a lower clamping plate, a protection assembly and a transformer assembly. The lower clamping plate is mounted below the upper clamping plate; the protection assembly is mounted on the periphery of the upper clamping plate; the protection assembly is provided with a mounting piece, a connecting piece and a limiting piece; the mounting piece comprises a mounting block, a baffle and a connecting piece; the mounting block is arranged on the periphery of the upper clamping plate and is provided with a first opening; a baffle is arranged below the mounting block; the mounting piece is arranged on the periphery of the transformer assembly; the limiting piece is arranged on the inner wall of the baffle and used for protecting the high-voltage cable and the low-voltage cable. According to the three-dimensional open roll iron core dry type transformer, the transformer assembly is prevented from being damaged through the protection assembly, the outdoor service life of the three-dimensional open roll iron core dry type transformer is prolonged, the transformer assembly is effectively prevented from being abraded, the high-voltage cable and the low-voltage cable are limited and protected through the limiting sleeve, and the stability of the working state of the transformer assembly is conveniently improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a three-dimensional open wound-core dry-type transformer. Background Technique

[0002] The key component of a three-dimensional wound-core transformer is the three-dimensional wound core, which is formed by splicing three single-frame cores with exactly the same size. The cross-sections of the core columns and yokes of each single-frame core are equal and close to a semi-circular shape. After splicing, the three core columns of the core are arranged in an equilateral triangle three-dimensional pattern. The cross-section of the core column of the iron core is close to a circular shape. The magnetic path lengths of the three iron cores are the same, and the length of the yoke is the shortest. Therefore, the iron core is light in weight and has low no-load loss. At the same time, the three-phase magnetic path of the three-dimensional open wound-core dry-type transformer is completely symmetrical, with remarkable power-saving effect, greatly reduced noise, stronger heat dissipation and overload capacity, and compact structure and small volume.

[0003] Chinese Patent Publication No. CN207474236U discloses a three-dimensional open wound-core dry-type transformer, including a wound core. The wound core includes a first iron core, a second iron core, a third iron core and a coil. The coil is located on the first iron core, the second iron core and the third iron core. One side of the first iron core is connected to one side of the second iron core. The other side of the first iron core is connected to one side of the third iron core. The other side of the second iron core is connected to the other side of the third iron core. The first iron core, the second iron core and the third iron core are all divided into two separable upper and lower parts through a break. The wound core of the utility model is an open separable type, which is very convenient for winding. The winding process is also simpler than that of a closed-core, greatly reducing the winding difficulty, thereby improving the production efficiency and reducing the production difficulty.

[0004] When the existing three-dimensional open wound-core dry-type transformer is set to be used outdoors, it is not convenient to protect the transformer components in different environments. When used outdoors, it collides and rubs against objects, resulting in damage to the transformer components, affecting the service life of the transformer, and it is not convenient to limit the high-voltage and low-voltage cables of the high-voltage transformer, resulting in the cables shifting or winding during use, affecting the stable working state of the transformer components. Summary of the Utility Model

[0005] In view of the problems existing in the background technique, a three-dimensional open wound-core dry-type transformer is proposed.

[0006] The utility model provides a three-dimensional open wound-core dry-type transformer, comprising: an upper clamping plate, a lower clamping plate, a protection component and a transformer component;

[0007] The lower clamping plate is installed below the upper clamping plate;

[0008] And a protection component, installed on the periphery of the upper clamping plate; the protection component is provided with a mounting piece, a connecting piece and a limiting piece; the mounting piece includes a mounting block, a baffle and a connecting piece; the mounting block is arranged on the periphery of the upper clamping plate and is provided with a first opening; a baffle is arranged below the mounting block; the mounting piece is arranged on the periphery of the transformer component; the limiting piece is arranged on the inner wall of the baffle for protecting the high-voltage cable and the low-voltage cable.

[0009] Preferably, a transformer component is arranged between the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate are installed by screws, so that the transformer component is detachable.

[0010] Preferably, a connecting block is arranged below the baffle, and the connecting block is provided with a through hole; the baffle is connected to the mounting block by bolts above, and the side of the mounting block is connected to the upper clamping plate by bolts, which is detachable.

[0011] Preferably, the limiting piece includes a mounting frame, an adjusting rod, a nut, a mounting sleeve, a support frame, a telescopic rod, a mounting rod, a limiting plate and a limiting sleeve;

[0012] The mounting frame is arranged on the baffle and is provided with a second opening, and the second opening is opposite to the first opening; the mounting frame is provided with an adjusting rod, the periphery of the adjusting rod is provided with a thread, the thread is rotationally connected with the nut, one side of the nut is provided with a mounting sleeve, the mounting sleeve is provided with a support frame, the support frame is provided with a telescopic rod, the telescopic end of the telescopic rod is provided with a mounting rod, one side of the mounting rod is provided with a limiting plate, and the limiting plate is provided with a limiting sleeve.

[0013] Preferably, the connecting piece includes three protective covers, three top plates and six welding blocks;

[0014] The three protective covers are installed on the periphery of the transformer component, the three protective covers are respectively connected to the three top plates above, and at the same time, the two connecting ends of the three protective covers are respectively connected to the six welding blocks;

[0015] Two welding blocks are opposite to each other for welding the connecting ends of the three protective covers together.

[0016] Preferably, the transformer component includes an iron core piece, a high-voltage cable, a low-voltage cable, and a coil pressing component;

[0017] The iron core piece is installed below the upper clamping plate, the iron core piece is provided with a high-voltage cable and a low-voltage cable; the coil pressing component is arranged on the periphery of the iron core piece.

[0018] Preferably, the iron core piece includes a first iron core coil, a second iron core coil, a third iron core coil and a coil;

[0019] By using the coil to connect one side of the first iron core coil and the second iron core coil, one side of the second iron core coil and the third iron core coil, and the third iron core coil and the first iron core coil; a three-dimensional opening is arranged at the connection center of the first iron core coil, the second iron core coil and the third iron core coil.

[0020] Preferably, the pressure coil assembly includes a low-voltage coil, a high-voltage coil, and an insulator;

[0021] The low-voltage coil is arranged on the periphery of the iron core assembly, the outer periphery of the low-voltage coil is provided with a low-voltage coil, and the outer periphery of the low-voltage coil is provided with an insulator; the pressure coil assembly is arranged on the inner wall of the protective cover, and the pressure coil assembly is installed on the protective component with the iron core assembly for protection.

[0022] Compared with the prior art, the utility model has the following beneficial technical effects:

[0023] In the utility model, by arranging the protective component and the connecting piece on the transformer component, the mounting block has the same outer structure as the upper clamping plate, so that it can be fitted and mounted on the upper clamping plate, which is convenient for carrying the lower baffle. The baffle is correspondingly arranged on the periphery of the high-voltage cable and the low-voltage cable of the transformer component, which is convenient for protecting the connection end of the transformer. At the same time, a protective cover is arranged on the periphery of the iron core component. The protective cover is made of high-temperature polytetrafluoroethylene and is fitted on the periphery of the iron core component, which is convenient for protecting the iron core component. Furthermore, the working efficiency of the transformer component is improved, the damage caused by the collision and abrasion of the transformer component with objects is avoided, and the outdoor service life of the three-dimensional open-core dry-type transformer is prolonged.

[0024] In the utility model, by arranging the limiting piece on the baffle, the limiting piece is provided with a telescopic rod, a mounting rod, a limiting plate, a limiting sleeve, etc. The position of the limiting plate is adjusted by the telescopic rod. The limiting plate carries the limiting sleeve, and the limiting sleeve has a semicircular structure, which is convenient for adjusting to the periphery of the high-voltage cable and the low-voltage cable, so as to limit the high-voltage cable and the low-voltage cable. When the transformer component is collided, the limiting sleeve is used to avoid the deviation of the high-voltage cable and the low-voltage cable, improve the connection stability of the equipment interface, and at the same time avoid the winding between the cables, which is convenient for improving the working state stability of the transformer component. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure in the utility model;

[0026] Figure 2 is a schematic diagram of the structure of the protective component in the utility model;

[0027] Figure 3 is a schematic diagram of the structure of the limiting piece in the utility model;

[0028] Figure 4 is a schematic diagram of the structure of the connecting piece in the utility model;

[0029] Figure 5 is a schematic diagram of the structure of the transformer component in the utility model.

[0030] Reference numerals: 1, upper clamping plate; 2, lower clamping plate; 3, mounting block; 301, baffle; 302, connecting block; 303, mounting bracket; 304, adjusting rod; 305, nut; 306, mounting sleeve; 307, support frame; 308, telescopic rod; 309, mounting rod; 310, limiting plate; 311, limiting sleeve; 4, protective cover; 401, top plate; 402, welding block; 5, iron core component; 501, high-voltage cable; 502, low-voltage cable; 503, pressure coil component. Detailed implementation manners

[0031] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0032] Embodiment 1

[0033] As Figure 1 - Figure 5 shown, a three-dimensional open-type wound core dry-type transformer proposed by the present utility model includes: an upper clamping plate 1, a lower clamping plate 2, a protection component and a transformer component; the lower clamping plate 2 is installed below the upper clamping plate 1; and a protection component is installed on the periphery of the upper clamping plate 1; the protection component is provided with a mounting member, a connecting member and a limiting member; the mounting member includes a mounting block 3, a baffle 301 and a connecting member; the mounting block 3 is arranged on the periphery of the upper clamping plate 1 and is provided with a first opening; a baffle 301 is arranged below the mounting block 3; the mounting member is arranged on the periphery of the transformer component; the limiting member is arranged on the inner wall of the baffle 301 for protecting the high-voltage cable 501 and the low-voltage cable 502. By making the shape of the mounting block 3 the same as that of the periphery of the upper clamping plate 1, it can be fitted and installed on the upper clamping plate 1 for use. The mounting block 3 is used for the installation and connection of the baffle 301, so that the baffle 301 is installed on the periphery of the transformer component, protecting the transformer component and avoiding damage to the transformer component, and improving the service life of the three-dimensional open-type wound core dry-type transformer outdoors.

[0034] Further explanation, a connecting block 302 is arranged below the baffle 301, and the connecting block 302 is provided with a through hole; the baffle 301 is connected to the mounting block 3 with bolts above, and the side of the mounting block 3 is connected to the upper clamping plate 1 with bolts, which is detachable. The shape of the baffle 301 is the same as that of the mounting block 3, and thus it is larger than the height of the mounting block 3 in use. The baffle 301 is installed with the cooperation of the connecting block 302, so that the baffle 301 can be installed on the periphery of the transformer component as needed, facilitating the increase of the protection range of use.

[0035] Further explanation, the connecting piece includes three protective covers 4, three top plates 401 and six welding blocks 402; the three protective covers 4 are installed on the periphery of the transformer assembly, the upper parts of the three protective covers 4 are respectively connected to the three top plates 401, and at the same time, the connecting ends on both sides of the three protective covers 4 are respectively connected to the six welding blocks 402; two welding blocks 402 are opposite to each other for welding the connecting ends of the three protective covers 4 together. The connecting ends of the protective covers 4 are welded together by the welding blocks 402, and the connections of the three protective covers 4 are all arranged along the periphery of the press coil part 503, which is convenient for increasing the protection of the components of the transformer assembly. At the same time, it is used in cooperation with the connecting piece and can be separately arranged on the transformer assembly for use, which is convenient for protecting the three-dimensional open-core dry-type transformer in different ways, improving the operation and use of the three-dimensional open-core dry-type transformer. Furthermore, the protective cover 4 is made of high-temperature polytetrafluoroethylene, and the high-temperature polytetrafluoroethylene manufacturing has the functions of waterproof and high-temperature resistance, which is convenient for the three-dimensional open-core dry-type transformer to work in different environments and improves the protection effect.

[0036] Further explanation, the limiting piece includes a mounting bracket 303, an adjusting rod 304, a nut 305, a mounting sleeve 306, a support frame 307, a telescopic rod 308, a mounting rod 309, a limiting plate 310 and a limiting sleeve 311; the mounting bracket 303 is arranged on the baffle 301 and is provided with a second opening, and the second opening is opposite to the first opening; the mounting bracket 303 is provided with an adjusting rod 304, the periphery of the adjusting rod 304 is provided with threads, and the threads are rotatably connected to the nut 305. One side of the nut 305 is provided with a mounting sleeve 306, the mounting sleeve 306 is provided with a support frame 307, the support frame 307 is provided with a telescopic rod 308, the telescopic end of the telescopic rod 308 is provided with a mounting rod 309, and one side of the mounting rod 309 is provided with a limiting plate 310, and the limiting plate 310 is provided with a limiting sleeve 311. The baffle 301 is installed with the mounting bracket 303, the mounting bracket 303 is provided with the adjusting rod 304, the periphery of the adjusting rod 304 is provided with a threaded structure, and the threads are matched with the internal threads of the nut 305 to achieve the connection between the rotating nut 305 and the adjusting rod 304. At the same time, a mounting sleeve 306 is arranged on the periphery of the adjusting rod 304, and the mounting sleeve 306 is provided with a support frame 307 passing through the first opening and the second opening and connected inside the baffle 301. By rotating the nut 305 to adjust the position, the position of the mounting sleeve 306 is adjusted, and the position of the support frame 307 is adjusted according to the high-voltage cable 501 and the low-voltage cable 502. Furthermore, there is a gap between the support frame 307 and the baffle 301, so as not to affect the installation of the upper clamping plate 1 and the lower clamping plate 2 by the screw.

[0037] Embodiment 2

[0038] As Figure 1 shown, a three-dimensional open-core dry-type transformer proposed by the present utility model, on the basis of the above embodiment, this embodiment also details the specific components of the upper clamping plate 1 and the lower clamping plate 2, as well as the cooperation method.

[0039] Further explanation: A transformer assembly is arranged between the upper clamping plate 1 and the lower clamping plate 2, and the upper clamping plate 1 and the lower clamping plate 2 are installed by screws, so that the transformer assembly is detachable. A low-voltage porcelain bushing and a high-voltage porcelain bushing are arranged above the upper clamping plate 1, so that the low-voltage porcelain bushing and the high-voltage porcelain bushing are respectively connected to the low-voltage cable 502 and the high-voltage cable 501 of the transformer assembly, which is convenient for connecting the transformer assembly and external equipment for use. Furthermore, the space between the upper clamping plate 1 and the lower clamping plate 2 is provided for installing the transformer assembly, so as to clamp and install the transformer assembly for use. By passing bolts through the upper and lower parts of the upper clamping plate 1 and the lower clamping plate 2, the upper clamping plate 1 and the lower clamping plate 2 are fixedly installed above and below the transformer assembly, which is convenient for improving the installation of the transformer assembly. At the same time, mounting holes are arranged on the periphery of the upper clamping plate 1, and the mounting holes are used for bolt mounting of the mounting block 3, so that the connecting piece is mounted on the upper clamping plate 1, which is convenient for increasing the connecting structure of the upper clamping plate 1 and is used in cooperation with the structure of the three-dimensional open-core dry-type transformer.

[0040] Embodiment 3

[0041] As Figure 5 shown, a three-dimensional open-core dry-type transformer proposed by the present utility model, on the basis of the above embodiments, this embodiment also details the specific components of the transformer assembly and the cooperation method.

[0042] Further explanation: The transformer assembly includes an iron core member 5, a high-voltage cable 501, a low-voltage cable 502, and a coil pressing member 503; the iron core member 5 is installed below the upper clamping plate 1, and the iron core member 5 is provided with a high-voltage cable 501 and a low-voltage cable 502; the coil pressing member 503 is arranged on the periphery of the iron core member 5. By connecting the high-voltage cable 501 and the low-voltage cable 502 to the iron core member 5 and the coil pressing member 503, it is convenient to achieve the cooperation of the components of the transformer and facilitate the operation of the transformer.

[0043] Further explanation: The iron core component 5 includes a first iron core coil, a second iron core coil, a third iron core coil, and a coil. The first iron core coil and one side of the second iron core coil are connected by using the coil, one side of the second iron core coil and the third iron core coil are connected, and the third iron core coil and the first iron core coil are connected. A three-dimensional opening is provided at the connection center of the first iron core coil, the second iron core coil, and the third iron core coil. The coil pressing component 503 is arranged on the inner wall of the protective cover 4, and the coil pressing component 503 installs the iron core component 5 on the protection component for protection. The first iron core coil, the second iron core coil, and the third iron core coil are fixed by the coil and are also tied together with tape, and then wrapped and tied firmly with polyester film polyester fiber non-woven soft composite foil in a semi-overlapping manner, making the connection of the components of the iron core component 5 more stable and preventing loosening of the position. Furthermore, a polyester film polyester fiber non-woven soft composite foil is placed between every two iron cores to insulate the three iron cores from each other. The three protective covers 4 are all arranged along the periphery of the coil pressing component 503, which facilitates installing the iron core component 5 in the protection component, increasing the use of the components of the transformer component and improving the service life of the three-dimensional opening wound-core dry-type transformer.

[0044] The working principle of the present utility model is as follows: First, install the protection component according to the usage environment of the transformer component. When the transformer component is installed for outdoor use, install the mounting block 3 along the periphery of the upper clamping plate 1 by using bolts, and use bolts to set the baffle 301 below the mounting block 3. The baffle 301 is used to protect the periphery of the upper end of the transformer component. When comprehensive protection of the transformer periphery is required; through the baffle 301 with a first opening and an outer mounting frame 303 with a second opening, align the second opening with the first opening, so that one end of the support frame 307 penetrates to the inside of the baffle 301. The support frame 307 is equipped with a telescopic rod 308, and the telescopic end of the telescopic rod 308 is connected to the mounting rod 309. The mounting rod 309 is connected to the limiting plate 310 by bolts. The limiting plate 310 is equipped with a limiting sleeve 311, and the limiting sleeve 311 is correspondingly connected to the peripheries of the high-voltage cable 501 and the low-voltage cable 502. Then, according to the distance between the limiting sleeve 311 and the cable, rotate and extend the telescopic rod 308 to move the limiting sleeve 311 onto the high-voltage cable 501 and the low-voltage cable 502 to limit the high-voltage cable 501 and the low-voltage cable 502 and prevent cable winding problems. By using the protective cover 4 in cooperation with the baffle 301 to protect the transformer component, after the transformer component is installed on the lower clamping plate 2, first, the protective cover 4 is sleeved on the outer wall from top to bottom along the coil pressing component 503 to cooperate with the baffle 301. As the transformer component is used, the protective cover 4 can also be separately set on the transformer component for protection, and the staff can set the protection component on the transformer component according to needs.

[0045] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those skilled in the relevant technical field.

Claims

1. A three-dimensional open wound core dry-type transformer, characterized in that, Comprising: Upper clamping plate (1); Lower clamping plate (2), installed below the upper clamping plate (1); And a protection component, installed on the periphery of the upper clamping plate (1); the protection component is provided with a mounting piece, a connecting piece and a limiting piece; the mounting piece includes a mounting block (3), a baffle plate (301) and a connecting piece; the mounting block (3) is arranged on the periphery of the upper clamping plate (1) and is provided with a first opening; a baffle plate (301) is arranged below the mounting block (3); the mounting piece is arranged on the periphery of the transformer component; the limiting piece is arranged on the inner wall of the baffle plate (301) for protecting the high-voltage cable (501) and the low-voltage cable (502).

2. The three-dimensional open wound core dry-type transformer according to claim 1, characterized in that, A transformer component is arranged between the upper clamping plate (1) and the lower clamping plate (2), and the upper clamping plate (1) and the lower clamping plate (2) are installed by screws, so that the transformer component is detachable.

3. A three-dimensional open wound core dry-type transformer according to claim 2, wherein A connecting block (302) is arranged below the baffle plate (301), and the connecting block (302) is provided with a through hole; the upper part of the baffle plate (301) is connected to the mounting block (3) by bolts, and the side of the mounting block (3) is connected to the upper clamping plate (1) by bolts, which is detachable.

4. A three-dimensional open wound core dry-type transformer according to claim 3, characterized in that, The limiting piece includes a mounting frame (303), an adjusting rod (304), a nut (305), a mounting sleeve (306), a support frame (307), a telescopic rod (308), a mounting rod (309), a limiting plate (310) and a limiting sleeve (311); The mounting frame (303) is arranged on the baffle plate (301) and is provided with a second opening, and the second opening is opposite to the first opening; the mounting frame (303) is provided with an adjusting rod (304), the periphery of the adjusting rod (304) is provided with threads, and the threads are rotatably connected to the nut (305), one side of the nut (305) is provided with a mounting sleeve (306), the mounting sleeve (306) is provided with a support frame (307), the support frame (307) is provided with a telescopic rod (308), the telescopic end of the telescopic rod (308) is provided with a mounting rod (309), one side of the mounting rod (309) is provided with a limiting plate (310), and the limiting plate (310) is provided with a limiting sleeve (311).

5. A three-dimensional open wound core dry-type transformer according to claim 1, characterized in that, The connecting piece includes three protective covers (4), three top plates (401) and six welding blocks (402); The three protective covers (4) are installed on the periphery of the transformer component, the upper parts of the three protective covers (4) are respectively connected to the three top plates (401), and at the same time, the connecting ends on both sides of the three protective covers (4) are respectively connected to the six welding blocks (402); Two welding blocks (402) are opposite to each other for welding the connecting ends of the three protective covers (4) together.

6. A three-dimensional open wound core dry-type transformer according to claim 2, characterized in that The transformer component includes an iron core piece (5), a high-voltage cable (501), a low-voltage cable (502), and a coil pressing piece (503); The iron core piece (5) is installed below the upper clamping plate (1), the iron core piece (5) is provided with a high-voltage cable (501) and is provided with a low-voltage cable (502); the coil pressing piece (503) is arranged on the periphery of the iron core piece (5).

7. A three-dimensional open wound core dry-type transformer according to claim 6, characterized in that, The iron core piece (5) includes a first iron core coil, a second iron core coil, a third iron core coil and a coil; One side of the first iron core coil and the second iron core coil is connected by using a coil, one side of the second iron core coil and the third iron core coil is connected, and the third iron core coil and the first iron core coil are connected; a three-dimensional opening is arranged at the connection center of the first iron core coil, the second iron core coil, and the third iron core coil.

8. A three-dimensional open wound core dry-type transformer according to claim 7, characterized in that, The pressure coil component (503) includes a low-voltage coil, a high-voltage coil, and an insulator; The low-voltage coil is arranged on the periphery of the iron core component (5), the high-voltage coil is arranged on the periphery of the low-voltage coil, and the insulator is arranged on the periphery of the low-voltage coil; The pressure coil component (503) is arranged on the inner wall of the protective cover (4), and the pressure coil component (503) is installed on the protection component with the iron core component (5) for protection.

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