CN207009277U - A kind of instrument transformer - Google Patents

Abstract

The utility model discloses a kind of instrument transformer,Including housing,Iron core and winding,The top of the housing is provided with secondary windings,The side of the secondary windings is provided with and is respectively equipped with left caulking groove and left load the end of a thread,Left load the end of a thread insertion is arranged in left caulking groove,The side of the left caulking groove is respectively equipped with right caulking groove and right load the end of a thread,Right load the end of a thread insertion is arranged in right caulking groove,And described right load the end of a thread and left load the end of a thread are electrically connected with secondary windings,The iron core is arranged in housing,The winding is wound on the iron core,And it is bonded with the iron core,One end connecting valve of the winding,The side of the switch be provided with and connect wires head,The other end access mu balanced circuit of the winding,The mu balanced circuit accesses secondary windings,The secondary windings is connected with mu balanced circuit,This kind of instrument transformer possesses significant stability and odds for effectiveness,With wide market prospects and application prospect.

Description

A kind of instrument transformer

Technical field

Transformer technology field is the utility model is related to, specially a kind of instrument transformer.

Background technology

Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and main member is primary coil, secondary Level coil and iron core（Magnetic core）.Major function has：Voltage transformation, current transformation, impedance conversion, isolation, voltage stabilizing（Magnetic saturation transformation Device）Deng.It can be divided into, according to use,：Power transformer and special transformer（Electric furnace change, rectification change, power frequency testing transformer, pressure regulation Device, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformer, electronic transformer, Reactor, transformer etc.）.Circuit symbol often uses beginning examples of the T as numbering:T01, T201 etc., transformer varying-voltage principle Found first by faraday, but until 19th-century just starts practical application the eighties.Direct current should be exported in generating field In the competition of alternating current, it is one of its advantage that alternating current, which can use transformer,.Transformer can convert electric energy to high electricity Current forms are forced down, then reconvert is gone back, therefore substantially reduces loss of the electric energy in course of conveying so that the warp of electric energy Ji fed distance reaches farther.Consequently, it is possible to power plant can build the place away from electricity consumption in.The most of electric power in the world pass through A series of transformation finally just reaches user there.Transformer is to utilize static electrical appliance made of electromagnetic induction principle.When When primary coil of transformer is connected in AC power, alternating flux is just produced in unshakable in one's determination, alternating flux is represented with φ.Former and deputy line φ in circle is identical, and φ is also harmonic function, and table is φ=φ msin ω t.From Faraday's electromagnetic induction law, former, Induced electromotive force in secondary coil is e1=- N1d φ/dt, e2=- N2d φ/dt.N1, N2 are the number of turn of former and deputy coil in formula.

But existing transformer antijamming capability in use is weaker, and output voltage is more unstable, certain extreme condition , aspect to be modified be present in the lower work that can influence instrument board.

So how to design a kind of instrument transformer, turning into us will currently solve the problems, such as.

Utility model content

The purpose of this utility model is to provide a kind of instrument transformer, asked with solve to propose in above-mentioned background technology Topic.

To achieve the above object, the utility model provides following technical scheme：A kind of instrument transformer, including housing, iron Core and winding, the top of the housing are provided with secondary windings, and the side of the secondary windings, which is provided with, is respectively equipped with left caulking groove and a left side The end of a thread is loaded, left load the end of a thread insertion is arranged in left caulking groove, and the side of the left caulking groove is respectively equipped with right caulking groove and the right side Load the end of a thread, it is described it is right load the end of a thread insertion is arranged in right caulking groove, and it is described it is right load the end of a thread and it is left load the end of a thread with it is secondary Level winding is electrically connected with, and the iron core is arranged in housing, and the winding is wound on the iron core, and with the iron core Fitting, one end connecting valve of the winding, the side of institute's switch, which is provided with, connects wires head, and the other end of the winding accesses Mu balanced circuit, the mu balanced circuit access secondary windings, and the secondary windings is connected with mu balanced circuit.

Further, the side of described left load the end of a thread and right load the end of a thread is equipped with load, and described left load the end of a thread It is electrically connected with right load the end of a thread with load.

Further, the bottom of the housing is provided with symmetrical mounting bracket, the mounting bracket and the case weld.

Further, the side of the housing tip is provided with symmetrical fixed plate, and the top of the fixed plate is provided with bolt, The fixed plate is fixedly connected with the housing by the bolt.

Further, one end connection mains supply of the head of connecting wires.

Compared with prior art, the beneficial effects of the utility model are：This kind of instrument transformer, electric current input instrument is born A mu balanced circuit has been accessed before carrying so that transformer can export galvanic current source, have stronger anti-interference energy Power so that instrument can possess stable working environment, help to extend the working life of instrument, and this kind of instrument transformer There is provided multiple load wiring heads, can be simultaneously multiple instrumentation out-put supplies, improve service efficiency, this kind of instrument transformation Device possesses significant stability and odds for effectiveness, has wide market prospects and application prospect.

Brief description of the drawings

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

Fig. 2 is circuit diagram of the present utility model；

In figure：1- housings；2- mounting brackets；3- secondary windings；4- connects wires head；5- fixed plates；6- bolts；The left caulking grooves of 7-； The right caulking grooves of 8-；The right load the end of a thread of 9-；The left load the end of a thread of 10-；11- mains supplies；12- is switched；13- iron cores；14- is loaded；15- is steady Volt circuit；16- windings.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of instrument transformer, including housing 1, iron core 13 and winding 16, the top of the housing 1 is provided with secondary windings 3, and the side of the secondary windings 3, which is provided with, is respectively equipped with left caulking groove 7 and it is left load the end of a thread 10, it is described it is left load the end of a thread 10 insertion is arranged in left caulking groove 7, the side of the left caulking groove 7 is respectively equipped with Right caulking groove 8 and right load the end of a thread 9, right load the end of a thread 9 insertion is arranged in right caulking groove 8, and described right load the end of a thread 9 and a left side Load the end of a thread 10 is electrically connected with secondary windings 3, and the iron core 13 is arranged in housing 1, and the winding 16 is wound on On the iron core 13, and be bonded with the iron core 13, one end connecting valve 12 of the winding 16, it is described switch 12 side Provided with connecting wires first 4, the other end access mu balanced circuit 15 of the winding 16, the mu balanced circuit 15 accesses secondary windings 3, institute Secondary windings 3 is stated to connect with mu balanced circuit 15.

Further, the side of described left load the end of a thread 10 and right load the end of a thread 9 is equipped with load 14, and the left load The end of a thread 10 and right load the end of a thread 9 are electrically connected with load 14, the load 14 specially instrumentation, the instrument transformer point The end of a thread 10 and right load the end of a thread 9 left She Zhiliao not be loaded, stable dc power supplies can be exported for more instrumentations simultaneously, effectively carried High operating efficiency, reduces equipment investment cost.

Further, the bottom of the housing 1 is provided with symmetrical mounting bracket 2, and the mounting bracket 2 welds with the housing 1, The transformer can be installed on instrumentation by the mounting bracket 2.

Further, the side on the top of housing 1 is provided with symmetrical fixed plate 5, and the top of the fixed plate 5 is provided with spiral shell Bolt 6, the fixed plate 5 are fixedly connected with the housing 1 by the bolt 6, and the fixed plate 5 is used for fixation.

Further, it is described connect wires first 4 one end connection mains supply 11, it is described connect wires first 4 be used for access civil power Power supply 11.

Operation principle：First, the transformer is installed on instrumentation, when first 4 access mains supply 11 of connecting wires, electricity The switch 12 on road closes, and electric current crosses mu balanced circuit 15 through secondary windings 3 and winding 16 and is connected to left load the end of a thread 10 and the right side backward The load 14 for loading the side of the end of a thread 9 exports galvanic current source, because winding 16 is wound around on iron core 13, iron core 13 Effect is to strengthen the magnetic coupling between secondary windings 3 and winding 16, in order to reduce vortex and magnetic hystersis loss in iron core 13, iron core 13 by The silicon steel plate stacking of japanning and, there is no the contact of electricity between secondary windings 3 and winding 16, winding 16 is coiled into by insulated copper wire, this When electric current is after the iron core 13 wound by winding 16 if sample, change alternating voltage using the principle of electromagnetic induction, then pass through Cross mu balanced circuit 15 and export stable dc power supply for instrumentation use, on the one hand, so that transformer possess it is stronger anti-interference Ability, on the other hand, different voltage ratios or impedance ratio can be obtained, improve power transmission efficiency.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of instrument transformer, including housing（1）, iron core（13）And winding（16）, it is characterised in that：The housing（1）'s Top is provided with secondary windings（3）, the secondary windings（3）Side be provided be respectively equipped with left caulking groove（7）With left load the end of a thread （10）, described left load the end of a thread（10）Insertion is arranged at left caulking groove（7）It is interior, the left caulking groove（7）Side be respectively equipped with it is right embedding Groove（8）With right load the end of a thread（9）, described right load the end of a thread（9）Insertion is arranged at right caulking groove（8）It is interior, and described right load the end of a thread （9）With left load the end of a thread（10）And secondary windings（3）It is electrically connected with, the iron core（13）It is arranged at housing（1）It is interior, it is described around Group（16）It is wound on the iron core（13）On, and with the iron core（13）Fitting, the winding（16）One end connection open Close（12）, the switch（12）Side be provided with and connect wires head（4）, the winding（16）The other end access mu balanced circuit （15）, the mu balanced circuit（15）Access secondary windings（3）, the secondary windings（3）With mu balanced circuit（15）Series connection.

A kind of 2. instrument transformer according to claim 1, it is characterised in that：Described left load the end of a thread（10）With right load The end of a thread（9）Side be equipped with load（14）, and described left load the end of a thread（10）With right load the end of a thread（9）With load（14）Electricity Property connection.

A kind of 3. instrument transformer according to claim 1, it is characterised in that：The housing（1）Bottom be provided with it is symmetrical Mounting bracket（2）, the mounting bracket（2）With the housing（1）Welding.

A kind of 4. instrument transformer according to claim 1, it is characterised in that：The housing（1）The side on top is provided with Symmetrical fixed plate（5）, the fixed plate（5）Top be provided with bolt（6）, the fixed plate（5）With the housing（1）Pass through The bolt（6）It is fixedly connected.

A kind of 5. instrument transformer according to claim 1, it is characterised in that：The head of connecting wires（4）One end connection Mains supply（11）.