Dry-type power transformer

Abstract

The utility model relates to the technical field of dry-type transformers, in particular to a dry-type power transformer, which comprises a transformer body, a base and a mounting hole arranged between the transformer body and the base, and further comprises a crank arranged on the surface of the base, the other end of the two-way screw extends to the inner wall of the base and is rotationally connected with the inner wall of the base, the surface of the two-way screw is in threaded connection with a movable block, and the top of the movable block is in bolted connection with a first limiting plate. The movable plate is movably connected to the interior of the first limiting plate in front, one end of the movable plate is fixedly connected with a second limiting plate used for limiting the outer side of the transformer body, and a force application structure used for driving the movable plate to move is arranged on the surface of the first limiting plate; the transformer body can be limited, after the transformer body is placed on the top of the base, fixing holes between the transformer body and the base can be directly aligned, and then follow-up installation work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type transformers, in particular to a dry-type power transformer. Background Art

[0002] A dry-type power transformer is a transformer used in power systems. Its insulating medium is solid material rather than liquid, so no oil tank is required. It works based on the law of electromagnetic induction and converts voltage through a primary coil (high voltage side) and a secondary coil (low voltage side). When an alternating current is passed through the primary coil, an alternating magnetic field is generated. The secondary coil surrounds the primary coil, inducing an electromotive force, thereby generating a voltage in the secondary coil. The transformation ratio of a dry-type transformer determines whether it steps up or down.

[0003] The dry-type transformer mainly includes an upper clamp, a lower clamp and a transformer arranged between the upper clamp and the lower clamp, and the bottom of the lower clamp is usually fixed to the base by bolts. However, when the dry-type transformer is placed on the top of the base and fixed, it is necessary to align the fixing holes at the bottom of the lower clamp of the dry-type transformer with the fixing holes at the top of the base little by little, which brings inconvenience to the installation work of the installer. Utility Model Content

[0004] The purpose of the utility model is to provide a dry-type power transformer to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a dry-type power transformer, comprising a transformer body and a base and a mounting hole opened therebetween, and also comprising:

[0006] A crank is arranged on the surface of the base, a bidirectional screw is fixedly connected to the back of the crank, the other end of the bidirectional screw extends to the inner wall of the base and is rotatably connected to the inner wall of the base, a movable block is threadedly connected to the surface of the bidirectional screw, and a first limit plate is bolted to the top of the movable block;

[0007] A movable plate is movably connected to the inside of the first limiting plate in front, one end of which is fixedly connected to a second limiting plate for limiting the outer side of the transformer body, and a force structure for driving the movable plate to move is arranged on the surface of the first limiting plate.

[0008] Preferably, the force-applying structure includes a torsion plate arranged on the surface of the first limiting plate in front, a rotating rod with one end fixed to the back of the torsion plate, a gear fixed to the other end of the rotating rod, and a plurality of teeth fixed to the top surface of the movable plate, and the bottom of the gear is meshed with the movable plate through the teeth.

[0009] Preferably, limiting grooves are provided at the front and rear sides of both sides of the inner cavity of the base, limiting blocks are fixedly connected to both sides of the movable block, and the surface of the limiting block is slidably connected to the inside of the limiting groove.

[0010] Preferably, a slide plate is fixedly connected to the bottom of the movable plate, and the surface of the slide plate is slidably connected to the inside of the first limiting plate in front.

[0011] Preferably, scale markings are provided on the front and rear sides of the top of the base and on the surface of the movable plate.

[0012] Preferably, a cushion is provided on the inner side of the second limiting plate and on the opposite sides of the front and rear first limiting plates, and the cushion is made of rubber.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can drive the two first limit plates at the front and rear to move toward the opposite sides through the threaded connection between the bidirectional screw and the movable block, so as to facilitate the front and rear limiting of the transformer body before installation. At the same time, the movable plate can move inside the first limit plate at the front, and can drive the second limit plate to limit the left and right sides of the transformer body. In this way, after the transformer body falls into the top surface of the base, the installation holes therebetween can be aligned, so as to facilitate subsequent faster installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure after the transformer body and the base are separated in the utility model;

[0017] Figure 3 It is a rear view structural schematic diagram of the utility model;

[0018] Figure 4 It is a schematic diagram of the local cross-sectional structure of the present utility model.

[0019] In the figure: 1. transformer body; 2. base; 3. mounting hole; 4. crank; 5. bidirectional screw; 6. movable block; 7. first limit plate; 8. movable plate; 9. second limit plate; 10. force structure; 101. torsion plate; 102. rotating rod; 103. gear; 104. teeth; 11. slide plate; 12. limit groove; 13. limit block; 14. scale mark; 15. cushion. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-4 As shown, a dry-type power transformer includes a transformer body 1 and a base 2, a mounting hole 3 is opened between the bottom of the transformer body 1 and the top of the base 2, the transformer body 1 and the base 2 are fixed by bolts between the transformer body 1 and the base 2 and inside the mounting hole 3, a crank 4 is arranged on the surface of the base 2, a bidirectional screw 5 is fixedly connected to the back of the crank 4, the other end of the bidirectional screw 5 extends to the inner wall of the base 2 and is rotatably connected to the inner wall of the base 2, a movable block 6 is threadedly connected to the surface of the bidirectional screw 5, a first limiting plate 7 is bolted to the top of the movable block 6, a movable plate 8 is movably connected to the interior of the first limiting plate 7 in front, and the front and rear sides of the top of the base 2 and the surface of the movable plate 8 The surfaces are all provided with scale marks 14, which makes it convenient for the staff to understand the moving positions of the movable plate 8 and the first limiting plate 7, so as to better align the mounting holes 3 between the transformer body 1 and the base 2 later. One end of the movable plate 8 is fixedly connected with the second limiting plate 9 for limiting the outer side of the transformer body 1, and the inner side of the second limiting plate 9 and the side facing the front and rear first limiting plates 7 are provided with soft pads 15, and the soft pads 15 are made of rubber material, so that the contact surfaces between the first limiting plate 7 and the second limiting plate 9 and the transformer body 1 can be protected to prevent excessive friction between them. The surface of the first limiting plate 7 is provided with a force-applying structure 10 for driving the movable plate 8 to move.

[0022] The force-applying structure 10 includes a torsion plate 101, a rotating rod 102, a gear 103 and teeth 104. The torsion plate 101 is arranged on the surface of the first front limiting plate 7, the back side of the torsion plate 101 is fixed to one end of the rotating rod 102, the other end of the rotating rod 102 extends to the inside of the first limiting plate 7 and is fixed to the surface of the gear 103, there are several teeth 104, and they are all fixed on the top surface of the movable plate 8, the bottom of the gear 103 is meshed with the movable plate 8 through the teeth 104, so that when the movable plate 8 is driven to move, the torsion plate 101 can be rotated, and the gear 103 can be driven to rotate through the rotating rod 102, and the movable plate 8 can be driven to move by the teeth 104, so as to facilitate the subsequent limiting of the outer side of the transformer body 1, thereby faster installation.

[0023] Limiting grooves 12 are provided on the front and rear sides of both sides of the inner cavity of the base 2, and limiting blocks 13 are fixedly connected to both sides of the movable block 6. The surface of the limiting block 13 is slidably connected to the inside of the limiting groove 12, so that the movable block 6 can be auxiliary limited to facilitate its forward and backward movement.

[0024] The bottom of the movable plate 8 is fixedly connected with a slide plate 11, and the surface of the slide plate 11 is slidably connected to the inside of the front first limiting plate 7, so that the movable plate 8 can be auxiliary supported and its stability during movement can be maintained.

[0025] Working principle: When in use, first place the base 2 at the desired position, and then measure the front and rear width and length of the bottom of the transformer body 1. After the measurement is completed, the crank 4 can be turned to drive the bidirectional screw 5 to rotate, and at the same time drive the front and rear movable blocks 6 and the first limit plate 7 to move to the opposite side, and observe the moved position through the scale mark 14, then the movable plate 8 inside the front first limit plate 7 can be driven to move through the force structure 10, and also observe the moving position of the scale mark 14 on the surface of the movable plate 8. After the adjustment is completed, the transformer body 1 can be lifted and placed from top to bottom on the top surface of the base 2. Since the first limit plate 7 and the second limit plate 9 limit the downward falling position of the bottom of the transformer body 1, after the transformer body 1 falls on the top surface of the base 2, the mounting hole 3 at the transformer body 1 and the mounting hole 3 at the base 2 can be aligned, and then it can be fixed by bolts, and finally the front and rear first limit plates 7 are driven to move to the opposite side again, and the second limit plate 9 moves close to the surface of the transformer body 1, so as to facilitate further limiting and fixing of the transformer body 1.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief 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 are still within the scope of the technical solution of the present invention.

Claims

1. A dry-type power transformer, comprising a transformer body (1) and a base (2) and a mounting hole (3) provided therebetween, characterized in that: Also includes: A crank (4) is arranged on the surface of the base (2), a bidirectional screw (5) is fixedly connected to the back of the crank (4), the other end of the bidirectional screw (5) extends to the inner wall of the base (2) and is rotatably connected to the inner wall of the base (2), a movable block (6) is threadedly connected to the surface of the bidirectional screw (5), and a first limit plate (7) is bolted to the top of the movable block (6); A movable plate (8) is movably connected to the interior of the first limiting plate (7) in front, one end of the movable plate (8) is fixedly connected to a second limiting plate (9) for limiting the outer side of the transformer body (1), and a force-applying structure (10) for driving the movable plate (8) to move is provided on the surface of the first limiting plate (7).

2. A dry-type power transformer according to claim 1, characterized in that: The force-applying structure (10) comprises a torsion plate (101) arranged on the surface of the first limiting plate (7) in the front, a rotating rod (102) with one end fixed to the back of the torsion plate (101), a gear (103) fixed to the other end of the rotating rod (102), and a plurality of teeth (104) fixed to the top surface of the movable plate (8), wherein the bottom of the gear (103) is meshed with the movable plate (8) through the teeth (104).

3. A dry-type power transformer according to claim 1, characterized in that: Limiting grooves (12) are provided at the front and rear sides of both sides of the inner cavity of the base (2), and limiting blocks (13) are fixedly connected to both sides of the movable block (6), and the surface of the limiting block (13) is slidably connected to the inside of the limiting groove (12).

4. A dry-type power transformer according to claim 1, characterized in that: The bottom of the movable plate (8) is fixedly connected with a slide plate (11), and the surface of the slide plate (11) is slidably connected to the inside of the first limiting plate (7) in front.

5. A dry-type power transformer according to claim 1, characterized in that: Scale markings (14) are provided on the front and rear sides of the top of the base (2) and on the surface of the movable plate (8).

6. A dry-type power transformer according to claim 1, characterized in that: A soft pad (15) is provided on the inner side of the second limiting plate (9) and on the opposite sides of the front and rear first limiting plates (7), and the soft pad (15) is made of rubber.

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