CN200941336Y

CN200941336Y - Half-opening high precision current mutual-inductor

Info

Publication number: CN200941336Y
Application number: CN 200620113549
Authority: CN
Inventors: 许治垣
Original assignee: CHANGXING SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd BEIJING SPACE
Current assignee: CHANGXING SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd BEIJING SPACE
Priority date: 2006-05-09
Filing date: 2006-05-09
Publication date: 2007-08-29
Anticipated expiration: 2016-05-09

Abstract

The utility model belongs to a field of electromagnetic technology, specifically a semi-open high precision current transformer, comprising an iron core, a coil, a shielding layer, and a shell. The model is mainly characterized in using a unique structure in shape of layer and flake for mutual plugging. whereof the iron core is made of magnetic conduction materials and is in a two semi-ring shape with two widened heads of 0.5mm thickness. each semi-ring shape core inserter is crossed and superposed by core materials in shape of a flake and is formed into a finger shape at the end. When assembled, the insertion is formed into a ring core structure and upper and lower pars of the shell are fixed in a type of a live page from outside with a hoist structure and a closed lock-structure. The transformer can collect small current signals from lines and is provided with the capability of high precision and strong anti-electromagnetic interference.

Description

The semi-open type high precision current transformer

Technical field

The utility model belongs to electromagnetic technology field, relates in particular to high precision current transformer.It partly is made up of iron core, coil, screen, shell and bindiny mechanism etc.

Technical background

It is easy and quick to extract current signal with instrument transformer, is technology commonly used in hyundai electronics and the electromagnetic technology field.But existing instrument transformer is because selecting for use of project organization and material unreasonablely causes sensitivity lower and use inconvenience and make trouble.Based on problems of the prior art, the applicant is devoted to a kind of improved current transformer.

Summary of the invention

Must break and install and use the deficiency of inconvenience in order to overcome existing General Current instrument transformer, the purpose of this utility model provides a kind of New type of current instrument transformer, and this instrument transformer not only can freely openable, has also guaranteed the high accuracy of instrument transformer.

The technical scheme that its technical problem of the utility model is adopted is: the iron core of instrument transformer is made by high permeability material, iron core shape is two semi-round ring shapes, each semi-round ring shape iron-core workpiece is made of the up and down piecemeal intersection stack of the sheet core of two kinds of different lengths, constitute the interdigitation shape in its end, the back that plugs each other forms circular.The chip two end portions is slightly wideer than the centre, the thick 0.2～1.0mm of sheet.The skin of semicircle iron core is the ambroin shell, and an end that joins at its two semicircle shells has a loose-leaf connector, and by this connection, 2 half parts of instrument transformer are axle with this loose-leaf connector, is free to open, and forms semi-open structure.The other end is equipped with the live metal fastener, after the iron core closure, by the fastening of metal fastener, opens the metal fastener, and iron core can form semi-open type.Because the sheet mutual-inserting type structure anastomose property that forms is good, guaranteed the high accuracy that current transformer is measured.

A preferred version of the present utility model is that this shell mechanism is snugly comprising iron core, is docked fully by the left and right two and half shells part of correspondence to constitute, and the loose-leaf connector is installed outside the end of butt joint, and the buckle fastener is installed outside the other end; Shell the first half is connected by short-circuit piece, and the bottom is the external connection terminal.

The beneficial effects of the utility model are, can need not broken string and can install and use current transformer under the charged situation of detected lead, change, safeguard simple, convenient.

Description of drawings

Elaborate the utility model below in conjunction with the instantiation in the accompanying drawing.

Fig. 1 is the sheet core dimensions figure of the utility model.

Fig. 2 is the front view of half core body part-structure of the end interdigitation of the utility model, and white and black part are represented upper and lower two core bodys of interdigital assembling respectively.

Fig. 3 is the part vertical view of Fig. 2.

Fig. 4 be show two partial core body parts will be when inserting interdigital end view, be left and right two halves 1., 2..

Fig. 5 is the general illustration of the utility model, 3. is short-circuit piece, 4. is the external connection terminal, 5. is the loose-leaf connector, 6. is the lock ring hasp after chimeric.

Fig. 6 is the vertical view of general illustration.

Fig. 7 is that the A of general illustration is to view.

Embodiment

The iron core of the utility model adopts the particular structure form to constitute with good magnetic material, iron core be the sheet lamination to inserting structure, unique design and technology have guaranteed unshakable in one's determination tight identical.Iron core is formed by stacking by sheet core intersection, and its size as shown in Figure 1.

This iron core that assembles is annular, and there is plastic casing in the outside, and two semi-round ring shape core body spares are made of a plurality of chip shown in Figure 1 stacks, as shown in Figure 2, white expression a slice among the figure, black is represented another sheet.The semi-ring end shape is an interdigital structure, as shown in Figure 3.The end shape of assembling is numbered in Fig. 4 and 1., is 2. represented two semicircle laminations shown in Figure 1 as shown in Figure 4, and the rest may be inferred by analogy for it.

The thick 0.5mm of lamination of the present utility model, every one side of something is formed by 8～10.Every half of coiling 1000 circles.Can make different size according to purposes instrument transformer internal diameter.In Fig. 5,4. short-circuit piece two coils that 3. are used to contact are the external connection terminal, 5. are the loose-leaf connector, guarantee the fixedly connected and semi-open of two halves iron core, are the lock ring fastener member 6., are used for the locking after the 2 half part iron core closures.

The utility model belongs to the product of electromagnetic technology field, is the semi-open type high precision current transformer.Instrument transformer is mainly used in the measurement of extraction current signal, particularly small-signal, and it has good anti-electromagnetic interference capability, is specially adapted to the occasion of frequent loading and unloading and the installation occasion that can not cut off the power supply, break.Be widely used in the various device of measuring the signal of telecommunication.

Fig. 6 is the vertical view of Fig. 5, after two the semicircle iron core closures of having drawn among the figure, the lock ring fastener member figure of its end, two parts of fastener are individually fixed on the shell of two semicircle iron cores, one of them is the pedestal of lock ring fastener member, another is the loose collar of fastener member, and the loose collar of fastener member is buckled on the pedestal of fastener member in the time of fixedly.

Fig. 7 be the A of Fig. 5 to view, the outer shape that the loose-leaf metalwork connects of having drawn among the figure, the loose-leaf connector is used for freely opening and closure of 2 half part iron cores.

Claims

1, semi-open type high precision current transformer, it winds the insulation crust of packing into behind the coil by two semicircular iron cores and is assembled into circle, link to each other with bindiny mechanism up and down and constitute, it is characterized in that: semicircle iron core by two kinds of different semicircle magnetic conduction chips of length intersect up and down the stack constitute, semicircle iron core after the stack becomes the interdigitation shape, and 2 half iron cores are to insert forming a circle, and it can freely openable, thick 0.2mm～the 1.0mm of sheet is slightly widened at the two ends of semicircle chip.

2, by the described semi-open type high precision current transformer of claim 1, it is characterized in that: its two semicircle iron cores are linked to each other by the bindiny mechanism of hull outside and form a circular iron core, bindiny mechanism is made up of two parts up and down, the bottom is the loose-leaf connector, top is divided into lock ring fastener member retaining mechanism, left and right two and half shells can serve as that axle is opened freely with closed with the center of bottom loose-leaf connector, closed back is by the lock ring fastener member locking on top, shell the first half is connected by short-circuit piece, and the bottom is the external connection terminal.