CN207264892U

CN207264892U - Type B creepage mutual inductor

Info

Publication number: CN207264892U
Application number: CN201721332723.7U
Authority: CN
Inventors: 周岳炜
Original assignee: CHANGZHOU SANHENG ELECTRICAL APPLIANCES Co Ltd
Current assignee: CHANGZHOU SANHENG ELECTRICAL APPLIANCES Co Ltd
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2018-04-20
Anticipated expiration: 2027-10-13

Abstract

It the utility model is related to low voltage electrical apparatus technology field, especially a kind of Type B creepage mutual inductor, with transformer casing, the transformer casing is hollow structure, the inner cavity of transformer casing is separated into independent chamber by partition plate, the magnetic core set in a ring is equipped with chamber, magnetic core is close to partition plate setting, magnetic core is coated in magnetic core outer shell, magnetic core outer shell along the circumferential direction on outer surface be wound with enameled wire, do not change the structure of original mutual inductor, using twin coil dc magnetization technique, improve the sensitivity of DC detecting；Repertoire with AC, A type mutual inductor, adds smooth direct current detection function；Magnetic core does Magnetized Material using original mutual inductor is nanocrystalline；Requirement under being detected suitable for different DC leakages.

Description

Type B creepage mutual inductor

Technical field

Low voltage electrical apparatus technology field is the utility model is related to, especially a kind of Type B creepage mutual inductor.

Background technology

There is the electric leakage signal that A types contain pulsating direct current component using the mutual inductor in leakage circuit breakers on existing market, AC types earth leakage protective device is for power frequency sine leakage current R ＆ D design, the sinusoidal electric leakage to applying and slowly rising suddenly Electric current can reliably protecting.

It is increasingly wider with Rechargeable vehicle, may be to charging vapour when automobile charge with the presence of smooth direct current electricity Car produces the harm of bigger, so being badly in need of a kind of mutual inductor that can be reduced to Rechargeable vehicle generation minor hazard on charging pile.

Utility model content

The technical problems to be solved in the utility model is：Overcome deficiency in the prior art, there is provided one kind does not change original The structure of mutual inductor, improves the sensitivity of DC detecting, adds the Type B creepage mutual inductor of smooth direct current detection function.

Technical solution is used by the utility model solves its technical problem：A kind of Type B creepage mutual inductor, has mutual inductance Device shell, the transformer casing are hollow structure, and the inner cavity of transformer casing is separated into independent chamber, chamber by partition plate Interior is equipped with the magnetic core set in a ring, and magnetic core is close to partition plate setting, and magnetic core is coated in magnetic core outer shell, the edge of magnetic core outer shell Outer surface on circumferencial direction is wound with enameled wire.

Further, the cross sectional shape of the transformer casing is in arch door shape, and the lower end of transformer casing is equipped with some Contact pin, the both ends wire terminal of enameled wire are both connected on contact pin.

Further, using made of nanocrystalline material, the magnetic core outer shell is made the magnetic core of PA66 materials.

Further, the magnetic core surface is fixed on transformer casing inner cavity by adhesive layer, effectively prevents dust Into, the service life of magnetic core is improved,.

Further, the adhesive layer is made of epoxide resin material, and epoxy resin has excellent adhesive strength, Dielectric properties are good, and deformation retract rate is small, and product size stability is good, and hardness is high, and pliability is preferable, to alkali and most of solvent Stablize.

The beneficial effects of the utility model are：The utility model does not change the structure of original mutual inductor, straight using twin coil Magnetization technology is flowed, improves the sensitivity of DC detecting；Repertoire with AC, A type mutual inductor, adds smooth direct current inspection Brake；Magnetic core does Magnetized Material using original mutual inductor is nanocrystalline；Requirement under being detected suitable for different DC leakages.

Brief description of the drawings

The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the structure diagram of the utility model A-A.

1. transformer casing in figure, 2. chambers, 3. magnetic cores, 4. magnetic core outer shells, 5. enameled wires, 6. contact pins, 7. adhesive layers.

Embodiment

The utility model is further described presently in connection with attached drawing.These attached drawings are simplified schematic diagram only to show Meaning mode illustrates the basic structure of the utility model, therefore it only shows the composition related with the utility model.

A kind of Type B creepage mutual inductor as shown in Fig. 1~2, has transformer casing 1, and transformer casing 1 is hollow knot Structure, the inner cavity of transformer casing 1 are separated into independent chamber 2 by partition plate, the magnetic core 3 set in a ring, magnetic are equipped with chamber 2 Core 3 is close to partition plate setting, and magnetic core 3 is coated in magnetic core outer shell 4, magnetic core outer shell 4 along the circumferential direction on outer surface winding There is enameled wire 5.

The cross sectional shape of transformer casing 1 is in arch door shape, and the lower end of transformer casing 1 is equipped with some contact pins 6, enameled wire 5 Both ends wire terminal be both connected on contact pin 6.

Using made of nanocrystalline material, magnetic core outer shell 4 is made magnetic core 3 of PA66 materials.

3 surface of magnetic core is fixed on 1 inner cavity of transformer casing by adhesive layer 7.

Adhesive layer 7 is made of epoxide resin material.

This patent is effectively solved there are the detection of electrical leakage of smooth direct current electricity on circuit, is by straight using iron core in ironcore choke Non-linear and asymmetry when stream and alternating current magnetize jointly, by rectification circuit, will be pressed by the DC current of coil Number of turn inverse ratio is transformed into DC low current.It is mainly used for measuring DC current, current feedback, control is also used as in commutation system And protection element.Compared with current divider, its electric energy loss is low and has buffer action.

There are two magnetic cores 3 inside mutual inductor at the same time, the periphery of magnetic core 3 is encapsulated with plastic shell, in packaged mutual inductor magnetic Enameled wire 5 is wound with core 3, coil is weldingly fixed on contact pin 6 after coiling is complete, in mutual inductor surface encapsulated epoxy resin glue Hydropexis, i.e., do not change the structure of original mutual inductor, and uses twin coil dc magnetization technique, improves the sensitive of DC detecting Degree；Repertoire with AC, A type mutual inductor, adds smooth direct current detection function；Magnetic core is nanocrystalline using original mutual inductor Do Magnetized Material；Requirement under being detected suitable for different DC leakages.

The above embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with this skill The personage of art can understand the content of the utility model and be carried out, and the protection model of the utility model can not be limited with this Enclose, all equivalent change or modifications made according to the utility model Spirit Essence, should all cover the protection model in the utility model In enclosing.

Claims

1. a kind of Type B creepage mutual inductor, has transformer casing (1), it is characterised in that：During the transformer casing (1) is Hollow structure, the inner cavity of transformer casing (1) are separated into independent chamber (2) by partition plate, are equipped with chamber (2) and set in a ring Magnetic core (3), magnetic core (3) is close to partition plate setting, and magnetic core (3) is coated in magnetic core outer shell (4), magnetic core outer shell (4) along circle Outer surface in circumferential direction is wound with enameled wire (5).

2. Type B creepage mutual inductor according to claim 1, it is characterised in that：The section shape of the transformer casing (1) Shape is in arch door shape, and the lower end of transformer casing (1) is equipped with some contact pins (6), and the both ends wire terminal of enameled wire (5) is both connected to slotting On pin (6).

3. Type B creepage mutual inductor according to claim 1, it is characterised in that：The magnetic core (3) uses nanocrystalline material Manufactured, the magnetic core outer shell (4) is made of PA66 materials.

4. Type B creepage mutual inductor according to claim 1, it is characterised in that：Described magnetic core (3) surface passes through adhesive layer (7) it is fixed on transformer casing (1) inner cavity.

5. Type B creepage mutual inductor according to claim 4, it is characterised in that：The adhesive layer (7) uses epoxy resin Material is made.