CN206574588U - Pulse transforming device - Google Patents

Abstract

The utility model discloses pulse transforming device, it includes shell and transformer body, and the transformer body includes magnetic core, primary coil, secondary coil and coil brace；Provided with encapsulating layer between the shell and transformer body, insulating barrier is provided between the primary coil and the secondary coil；The insulating barrier is provided between the primary coil and the secondary coil, so as to thoroughly avoid producing electric arc between the primary coil and the secondary coil, and machining accuracy is reduced, improves processing efficiency and performance.

Description

Pulse transforming device

Technical field

The utility model is related to field transformer, more particularly to a kind of pulse transforming device.

Background technology

Transformer (Transformer) is the device for changing alternating voltage using the principle of electromagnetic induction, main member It is primary coil, secondary coil and iron core (magnetic core)；Major function has：Voltage transformation, current transformation, impedance are converted, isolated, surely Press (magnetic saturation transformer) etc.；It can be divided into, according to use,：Power transformer and special transformer (electric furnace change, rectification change, power frequency examination Test transformer, pressure regulator, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformation Device, electronic transformer, reactor, transformer etc.).

Pulse transformer general principle and general common transformer (such as audio-frequency transformer, power transformer, power transformer Deng) identical, but be just distinguishing from the point of view of the magnetic history this point of magnetic core, pulse transformer and general common transformer are such as Under:

1st, pulse transformer is a transformer being operated in transient state, that is to say, that pulse process is in the of short duration time It is interior to occur, it is the smooth square wave in a top, and general common transformer is operated in continuous constant magnetization, its alternation Signal is changed by sinusoidal waveform.

2nd, pulse signal is the repetition period, certain intervals, and the only voltage of negative or positive electrode, and alternating signal is to connect Continuous to repeat, existing positive also have negative magnitude of voltage.

3rd, pulse transformer requires undistorted during waveform transfer, that is, requires the forward position of waveform, and top drop will be as far as possible It is small, but the two indexs are contradiction.

In the prior art, first phase of the primary coil and secondary coil of the pulse transformer of most of small size in design Spacing between mutually is smaller, on the one hand, it adds difficult processing in processing and making process because making required precision height Degree, on the other hand, in use, easily produces electric arc between primary coil and secondary coil.

Therefore, a kind of easy processing is now provided and the pulse transforming device of electric arc is not likely to produce.

Utility model content

Therefore, a kind of pulse transforming device is now provided, and pulse transforming device of the present utility model, it includes shell and transformation Device body, the transformer body includes magnetic core, primary coil, secondary coil and coil brace；Shell and the transformer sheet Provided with encapsulating layer between body, insulating barrier is provided between the primary coil and the secondary coil.

The coil brace is set to circular ring type support, and it forms intermediate throughholes and annular groove；The magnetic core is annular Magnetic core, the interstitial hole of the primary coil through the toroidal core is wrapped on the toroidal core, the toroidal core peace In the annular groove；The secondary coil is wrapped on the circular ring type support through the intermediate throughholes；It is described exhausted Edge dividing plate isolates the primary coil with the secondary coil at the notch of the annular groove.

The secondary coil is formed by three layer insulation wire through intermediate throughholes coiling on the circular ring type support.

The transformer body also includes shielded coil, and the shielded coil includes the first shielding line, first shielding Line is wrapped on the toroidal core jointly with the primary coil.

The shielded coil also includes secondary shielding line, and the secondary shielding line and first shielding line are with Double-wire parallel wound Mode and the primary coil be wrapped in jointly on the toroidal core.

Shielding copper foil is additionally provided with the peripheral outer wall of the secondary coil.

The shielding copper foil is pasted onto by insulating tape in the peripheral outer wall of the secondary coil.

The breach connected with the annular groove is also formed on the outer wall of the circular ring type support, the primary coil First terminals stretch out from the breach.

Limited block is designed between the bottom plate of the transformer body and the shell, side plate.

The encapsulating layer is set to vacuum glue pouring layer.

Above-mentioned technical proposal of the present utility model has advantages below compared with prior art：

In the utility model, the insulating barrier is provided between the primary coil and the secondary coil, so that thorough Bottom avoids producing electric arc between the primary coil and the secondary coil, and reduces machining accuracy, improves processing efficiency And performance.

Brief description of the drawings

In order that content of the present utility model is more likely to be clearly understood, below according to specific implementation of the present utility model Example and with reference to accompanying drawing, the utility model is described in further detail, wherein

Fig. 1 is primary coil schematic diagram described in the utility model；

Fig. 2 is secondary coil schematic diagram described in the utility model；

Fig. 3 is the electrical schematic diagram of transformer body described in the utility model；

Fig. 4 is pulse transforming schematic device described in the utility model；

Reference is expressed as in figure：1- toroidal cores；2- primary coils；3- secondary coils；4- circular ring type supports；5- Insulating barrier；6- intermediate throughholes；7- annular grooves；8- interstitial holes；The shielding lines of 9- first；10- secondary shielding lines；11- shields copper Paper tinsel；12- breach；The terminals of 13- first；The terminals of 14- second；15- shells；16- encapsulatings layer；17- limited blocks；18- transformers Body.

Embodiment

Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

As shown in Fig. 1,2,3 and 4, the pulse transforming device of the present embodiment, it includes shell 15 and transformer body 18, The transformer body 18 includes magnetic core, primary coil 2, secondary coil 3 and coil brace；The shell 15 and transformer body Provided with encapsulating layer 16 between 18, insulating barrier 5 is provided between the primary coil 2 and the secondary coil 3.

In the present embodiment, the insulating barrier 5 is provided between the primary coil 2 and the secondary coil 3, so that thorough Bottom avoids producing electric arc between the primary coil 2 and the secondary coil 3, and reduces machining accuracy, improves processing effect Rate.

Specifically, as illustrated in fig. 1 and 2, the coil brace is set to circular ring type support 4, and it forms intermediate throughholes 6 and ring Connected in star 7；The magnetic core is toroidal core 1, and it is described that the primary coil 2 passes through the interstitial hole 8 of the toroidal core 1 to be wrapped in On toroidal core 1, the toroidal core 1 is arranged in the annular groove 7；The secondary coil 3 passes through the intermediate throughholes 6 It is wrapped on the circular ring type support 4；The insulating barrier 5 is at the notch of the annular groove 7 by the primary coil 2 Isolate with the secondary coil 3.

In the present embodiment, as shown in figure 1, the circle of interstitial hole 8 one of the primary coil 2 through the toroidal core 1 is enclosed Be wrapped on the toroidal core 1, be then installed along with again with the toroidal core 1 in the annular groove 7；Described time Level coil 3 then passes through being wrapped in for the circle circle of intermediate throughholes 6 one of the circular ring type support 4 after the primary coil 2 is installed On the circular ring type support 4, the secondary coil 3 so after winding is only deposited at the position corresponding to the annular groove 7 It is being in contact with the primary coil 2 in other words in the presence of the possibility for producing electric arc, so being set at the notch of the annular groove 7 The insulating barrier 5 is put, so that the secondary coil 3 and the primary coil 2 thoroughly be isolated, it is to avoid the electricity produced each other Arc.

The secondary coil 3 of the present embodiment is formed using three layer insulation wire around the coiling of circular ring type support 4, and it is not Only easy coiling, it is easy to processing, and with good insulating properties and anti-wear performance, so as to avoid the primary coil Electric arc is produced between 2 and the secondary coil 3, the processing efficiency and performance of the pulse transformer is improved.

The insulating barrier 5 is set to annular insulating barrier, and the annular insulating barrier is covered in the upper of the primary coil 2 On end face；Wherein, the external diameter of the toroidal membrane is not more than the external diameter of the annular groove 7, and the internal diameter of the toroidal membrane is not Less than the internal diameter of the annular groove 7；As preferred embodiment, the annular insulating barrier is set to the epoxy resin of annular Pad, is made at the same time it can also preferably described circular ring type support 4 of epoxy resin.

As shown in figure 1, the pulse transforming structure of the present embodiment also includes shielded coil, the shielded coil includes the first screen Line 9 is covered, first shielding line 9 is wrapped on the toroidal core 1 jointly with the primary coil 2；Further, the screen Covering coil also includes secondary shielding line 10, the secondary shielding line 10 and first shielding line 9 in the way of Double-wire parallel wound and The primary coil 2 is wrapped on the toroidal core 1 jointly.

In the present embodiment, the shielded coil is wrapped in jointly by the way of Double-wire parallel wound with the primary coil 2 On the toroidal core 1；On the one hand, the shielded coil improves the interference free performance of the pulse transforming structure, on the other hand, institute State the peak voltage that shielded coil can suppress to produce when the primary coil 2 works；The wire rod of shielded coil and primary coil 2 All it is to use enamel covered wire, the copper cash of shielded coil is equivalent to shielding copper foil, and the interference that primary coil 2 is produced all is by shielding Coil feeds back to the loop of the first terminals 13 of primary coil 2.

On the basis of above-described embodiment, shielding copper is additionally provided with the peripheral outer wall of the secondary coil 3 of the present embodiment Paper tinsel 11；As preferred embodiment, the shielding copper foil 11 is pasted onto the week of the secondary coil 3 outwards by insulating tape On wall；So that the interference of the outer bound pair pulse transforming structure is prevented or reduces, specific electrical schematic diagram, as shown in Figure 3.

Further, as shown in figure 1, the winding density of the primary coil 2 is more than the winding density of the secondary coil 3； The breach 12 connected with the annular groove 7, the of the primary coil 2 are also formed on the outer wall of the circular ring type support 4 One terminals 13 are stretched out from the breach 12, and power supply or other lines are connected in order to the first terminals 13 of the primary coil 2 Road；In the present embodiment, the first terminals 13 being preferably disposed on the primary coil and on the secondary coil The extension elongation of two terminals 14 is 25mm.

As shown in figure 4, on the basis of above-described embodiment, the transformer body 18 of the present embodiment and the shell 15 Bottom plate, be designed with limited block 17 between side plate；The limited block 17 can be in the transformer body 18 during encapsulating Positioning action is played, prevents occur relative displacement between part.Meanwhile, in the present embodiment, using vacuum glue pouring mode Encapsulating is carried out, the encapsulating layer 16 of formation produces for bubble-free in vacuum glue pouring layer and encapsulating layer, with the vacuum glue pouring The pulse transforming device of layer is not easy to puncture during being detected and used, with longer service life.

Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (10)

1. pulse transforming device, it includes shell and transformer body (18), and the transformer body (18) includes magnetic core, primary Coil (2), secondary coil (3) and coil brace；It is characterized in that：It is provided between the shell (15) and transformer body (18) Encapsulating layer (16), is provided with insulating barrier (5) between the primary coil (2) and the secondary coil (3).

2. pulse transforming device according to claim 1, it is characterised in that：The coil brace is set to circular ring type support (4), it forms intermediate throughholes (6) and annular groove (7)；The magnetic core is toroidal core (1), and the primary coil (2) is worn The interstitial hole (8) for crossing the toroidal core (1) is wrapped on the toroidal core (1), and the toroidal core (1) is arranged on described In annular groove (7)；The secondary coil (3) is wrapped on the circular ring type support (4) through the intermediate throughholes (6)；Institute State insulating barrier (5) at the notch of the annular groove (7) by the primary coil (2) and the secondary coil (3) every From.

3. pulse transforming device according to claim 2, it is characterised in that：The secondary coil (3) is by three layer insulation wire Through the intermediate throughholes (6), coiling is formed on the circular ring type support (4).

4. pulse transforming device according to claim 2, it is characterised in that：The transformer body (18) also includes shielding Coil, the shielded coil includes the first shielding line (9), and first shielding line (9) winds jointly with the primary coil (2) On the toroidal core (1).

5. pulse transforming device according to claim 4, it is characterised in that：The shielded coil also includes secondary shielding line (10), the secondary shielding line (10) and first shielding line (9) are in the way of Double-wire parallel wound and the primary coil (2) is common It is same to be wrapped on the toroidal core (1).

6. pulse transforming device according to claim 2, it is characterised in that：In the peripheral outer wall of the secondary coil (3) It is additionally provided with shielding copper foil (11).

7. pulse transforming device according to claim 5, it is characterised in that：The shielding copper foil (11) passes through insulating tape In the peripheral outer wall for being pasted onto the secondary coil (3).

8. pulse transforming device according to claim 2, it is characterised in that：On the outer wall of the circular ring type support (4) also The breach (12) connected with the annular groove (7) is formed, the first terminals (13) of the primary coil (2) lack from described Mouth (12) stretches out.

9. pulse transforming device according to claim 1, it is characterised in that：The transformer body (18) and the shell (15) limited block (17) is designed between bottom plate, side plate.

10. pulse transforming device according to claim 1, it is characterised in that：The encapsulating layer (16) is set to vacuum glue pouring Layer.