CN213124129U - Low-voltage current transformer - Google Patents

Abstract

The utility model discloses a low-voltage current transformer, box including mutual-inductor casing and installation mutual-inductor casing, the mutual-inductor casing inner wall is equipped with spring plunger all around, spring plunger passes L type support piece and fixes the mutual-inductor body, the spring plunger below is equipped with first connecting piece be equipped with first connecting plate between the first connecting piece, first connecting plate below is equipped with the fin, the inside first connecting plate below in side of mutual-inductor casing is equipped with the heat dissipation machine case, the quick-witted incasement that dispels the heat is equipped with the heat radiator, be equipped with the louvre between mutual-inductor casing outside side first connecting plate and the base, mutual-inductor casing up end is equipped with wiring portion and card lid, between the preceding terminal surface of box and the up end, through hinge connection between preceding terminal surface and the lower terminal surface, be equipped with transparent observation. The utility model discloses the mutual-inductor box can realize that the two sides are opened to can shift out the box with the mutual-inductor body, still have good heat dissipation function.

Description

Low-voltage current transformer

Technical Field

The utility model belongs to the electrical equipment field, concretely relates to low-voltage current transformer.

Background

At present, the mutual inductor is one of common metering devices, and the straight-through current mutual inductor is very commonly applied to electric power metering work. The low-voltage transformers are generally directly fixed on the inner wall of a transformer box body by screws. The front door of the existing mutual inductor box body can be opened, the space is narrow, the fixing screws are all arranged on the inner side of the mutual inductor box body, the installation and the disassembly are very inconvenient, and the working efficiency is seriously influenced.

The publication No. CN207441456U discloses a low-voltage current transformer, which comprises a transformer body and a box body for mounting the transformer body, wherein four fixing supports which are symmetrically arranged are arranged in the box body, one side of each fixing support is fixedly connected with the inner wall of the box body, a sliding rod is connected between the two fixing supports, the same sliding rod as the fixing supports is connected between the other two fixing supports, the two sliding rods are arranged in parallel, and the two sliding rods are sleeved with the same fixing seat which can move along the axis direction of the sliding rod; the lead screw is worn to be equipped with in the middle part of fixing base, and the bearing frame has all been cup jointed at the both ends of lead screw, the one end and the box inner wall fixed connection of every bearing frame, and the one end of lead screw is worn out the box and is provided with the driving motor that can drive the lead screw and carry out corotation or reversal outward, and the upper end of fixing base is provided with the mutual-inductor body.

The problems existing in the prior art are as follows: only one side of the mutual inductor box body can be opened, and heat generated during the working of the mutual inductor cannot be well dissipated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low-voltage current transformer to solve the problem that proposes in the above-mentioned technical background.

In order to solve the above problem, the utility model provides a following technical scheme: a low-voltage current transformer comprises a transformer shell and a box body for mounting the transformer shell, wherein spring plungers are arranged on the inner walls of the periphery of the transformer shell and penetrate through L-shaped supporting pieces to fix a transformer body, first connecting pieces are arranged below the spring plungers, first connecting plates are arranged between the first connecting pieces, radiating fins are arranged below the first connecting plates, the transformer shell is mounted on a base, a radiating case is arranged below the first connecting plates on the inner side of the transformer shell, a radiating machine is arranged in the radiating case, radiating holes are formed between the first connecting plates on the outer side of the transformer shell and the base, and a wiring portion and a clamping cover are arranged on the upper end face of the transformer shell;

the front end face of the box body is connected with the upper end face and the front end face is connected with the lower end face through hinges, a transparent observation window is arranged on the front end face, and a first handle is arranged on the upper end face;

the box body is characterized in that supporting rods are arranged on the lower end face inside the box body, fixing seats are arranged between the supporting rods, sleeves are arranged on the supporting rods, locking nuts are arranged on the sleeves, second connecting plates are connected between the sleeves, second connecting pieces are arranged below the second connecting plates, the second connecting pieces are connected with rockers penetrating through the T-shaped fixing piece fixing pieces through the connecting rods, and the T-shaped fixing pieces are fixed on the fixing seats.

Preferably, a buffer member is arranged below the second connecting member.

Preferably, the card cover is provided with a second handle for taking the card cover conveniently.

Compared with the prior art, the beneficial effects of the utility model are that: the mutual inductor box can realize that two sides are opened to can shift out the box with the mutual inductor body, make things convenient for the equipment and the maintenance of mutual inductor, simultaneously, have good heat dissipation function.

Drawings

FIG. 1 is a schematic view; the utility model is a schematic appearance diagram;

FIG. 2 is a schematic view; a schematic diagram of a transformer housing;

FIG. 3 is a schematic view; schematic illustration of the linkage mechanism.

In the figure: 1 mutual-inductor casing, 2 mutual-inductor bodies, 3L type support piece, 4 spring plungers, 5 first connecting piece, 6 first connecting plate, 7 heat radiators, 8 heat dissipation machine cases, 9 heat dissipation holes, 10 wiring portion, 11 card lid, 12 second handle, 13 box, 14 first handle, 15 hinges, 16 transparent observation window, 131 preceding terminal surface, 132 up end, 133 lower terminal surface, 134 rear end face, 17 bracing piece, 18 sleeve, 19 second connecting plate, 20 second connecting piece, 21 bolster, 22 connecting rods, 24 fixing base, 25 mounting, 26 rocker, 27 lock nut, 29 fin, 30 base.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without inventive achievements all belong to the protection scope of the present invention.

As shown in the figure, the utility model provides a technical scheme: a low-voltage current transformer comprises a transformer shell 1 and a box body 13 for mounting the transformer shell 1, wherein spring plungers 4 are arranged on the inner wall of the periphery of the transformer shell 1, the spring plungers 4 penetrate through L-shaped supporting pieces 3 to fix a transformer body 2, can adapt to transformer bodies with different specifications, are provided with first connecting pieces 5 below the spring plungers, are provided with first connecting plates 6 between the first connecting pieces 5, are provided with radiating fins 29 below the first connecting plates 6, and are used for radiating heat generated during the operation of the transformer body 2, the transformer shell 1 is mounted on a base 30, a radiating case 8 is arranged below the first connecting plates 6 on the inner side surface of the transformer shell 1, a radiating machine 7 is arranged in the radiating case 8, and radiating holes 9 are arranged between the first connecting plates 6 on the outer side surface of the transformer shell 1 and the base 30, heat is discharged from a transformer shell 1, a wiring part 10 and a clamping cover 11 are arranged on the upper end face of the transformer shell 1, and a second handle 12 is arranged on the clamping cover 11 to facilitate taking of the clamping cover 11;

the front end face 131 and the upper end face 132 of the box body 13 and the front end face 131 and the lower end face 133 of the box body 13 are connected through hinges, a transparent observation window 16 is arranged on the front end face 131, the condition of the mutual inductor can be observed when the box body 13 is not opened, a first handle 14 is arranged on the upper end face 132, and the upper end face 132 and the front end face 131 of the box body 13 can be opened through the first handle 14;

be equipped with the bracing piece 17 on the inside lower extreme 133 of box 13, be equipped with fixing base 24 between the bracing piece 17, be equipped with sleeve 18 on the bracing piece 17, be equipped with lock nut 27 on the sleeve 18, lock sleeve 18 fixedly, be connected with second connecting plate 19 between the sleeve 18 second connecting plate 19 below is equipped with second connecting piece 20, second connecting piece 20 below is equipped with bolster 21, can play the cushioning effect when second connecting piece 20 and fixing base contact, second connecting piece 20 passes through connecting rod 22 and is connected with the rocker 26 that passes T type mounting 25, T type mounting 25 is fixed on fixing base 24, base 30 places on second connecting plate 19.

The utility model discloses at the during operation, open up end 132 and preceding terminal surface 131 of box 13 through the first in command 14, rotatory rocker 26 drives connecting rod 22 upward movement, and connecting rod 22 promotes second connecting plate 19 and moves upwards, and sleeve 18 moves upwards along bracing piece 17 to make base 30 on second connecting plate 19 move upwards, and mutual-inductor casing 1 can shift out box 13, utilizes lock nut 27 to lock sleeve 18 fixed back, can carry out wiring or maintenance to the mutual-inductor; after the completion, with lock nut 27 unscrewing, rotatory rocker 26 drives connecting rod 22 downstream, connecting rod 22 promotes second connecting plate 19 downstream, sleeve 18 moves down along bracing piece 17, thereby make the base 30 downstream that is located on second connecting plate 19, make the mutual inductor get back to in the box 13, can stop rotatory rocker 26 when bolster 21 contacts fixing base 24, cover box 13 up end 132 and preceding terminal surface 131 and can make the mutual inductor normally work, at this moment, fin 29 and radiator 7 simultaneous working, discharge the heat that produces the mutual inductor during operation through louvre 9. Although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts will be within the scope of the appended claims.

Claims (3)

1. The utility model provides a low-voltage current transformer, includes mutual-inductor casing (1) and box (13) of installation mutual-inductor casing (1), its characterized in that: the inner wall of the periphery of the mutual inductor shell (1) is provided with a spring plunger (4), the spring plunger (4) penetrates through the L-shaped supporting piece (3) to fix the mutual inductor body (2), a first connecting piece (5) is arranged below the spring plunger, a first connecting plate (6) is arranged between the first connecting pieces (5), a radiating fin (29) is arranged below the first connecting plate (6), the mutual inductor shell (1) is arranged on a base (30), a heat dissipation case (8) is arranged below the first connecting plate (6) on the inner side surface of the mutual inductor shell (1), a heat radiator (7) is arranged in the heat radiating case (8), heat radiating holes (9) are arranged between the first connecting plate (6) and the base (30) on the outer side surface of the mutual inductor shell (1), the upper end face of the mutual inductor shell (1) is provided with a wiring part (10) and a clamping cover (11);

the front end face (131) and the upper end face (132) of the box body (13) and the front end face (131) and the lower end face (133) are connected through hinges, a transparent observation window (16) is arranged on the front end face (131), and a first handle (14) is arranged on the upper end face (132);

be equipped with bracing piece (17) on inside lower terminal surface (133) of box (13), be equipped with fixing base (24) between the bracing piece, be equipped with sleeve (18) on bracing piece (17), be equipped with lock nut (27) on sleeve (18), be connected with second connecting plate (19) between sleeve (18) second connecting plate (19) below is equipped with second connecting piece (20), second connecting piece (20) are connected with rocker (26) that pass T type mounting (25) through connecting rod (22), T type mounting (25) are fixed on fixing base (24).

2. A low-voltage current transformer according to claim 1, characterized in that: a buffer piece (21) is arranged below the second connecting piece (20).

3. A low-voltage current transformer according to claim 1, characterized in that: the card cover (11) is provided with a second handle (12) which is convenient for taking the card cover (11).

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