CN208706439U - A kind of inner screen continuous winding using fractional turns integer winding - Google Patents

Abstract

The utility model relates to a kind of inner screen continuous windings and its winding method using fractional turns integer winding, have active line and screen line, and active line is two conducting wires of parallel coiling, and screen line is set between active line turn-to-turn and line；In the thread-changing fragment position of active line, the active line of two parallel coilings rises to next section again after a circle more than one, and another directly rises to next section, forms the structure that integer adds half turn.The utility model coil carries out coiling using two conducting wires, every section of the number of turns is no longer limited to whole numbers of turns, but integer adds the case where half turn, effectively improve the filling rate of coil, reduce coil cost, longitudinal capacitor of coil is effectively increased, the turn insulation thickness for shielding line can also be accordingly smaller, and filling rate enhances the anti-short circuit capability of coil while increase again.

Description

A kind of inner screen continuous winding using fractional turns integer winding

Technical field

It is specifically a kind of using in fractional turns integer winding the utility model relates to a kind of design of transformer manufacturing Screen continuous winding.

Background technique

Currently, power transformer inner screen continuous winding mostly uses whole numbers of turns coiling, i.e., electrical the number of turns of every section line cake is equal For integer.Shielding line is then turn-to-turn coiling, i.e. screen line is wound between two circles, and general using across two sections of screens or across four Duan Ping.For Reduction turn-to-turn field strength, the turn insulation for shielding line can accordingly thicken.And the coil less for every section of the number of turns, every section of screen number of wire turns is certainly It is so also less.In order to increase the number of segment that longitudinal capacitor of coil just needs to increase interior screen section, the coiling for being increased by coil in this way is difficult Degree.

Utility model content

It is low for thicker, the few circle section filling rate of screen turn(s) insulation of power transformer inner screen continuous winding in the prior art And every section of the number of turns of coil it is less when interior screen section it is more and the deficiencies of increase coiling difficulty, problem to be solved in the utility model is to mention For a kind of the number of turns for increasing screen line while not increasing every section of work number of wire turns, the appropriate turn insulation for reducing screen line, and improve The inner screen continuous winding using fractional turns integer winding of the filling rate of coil.

In order to solve the above technical problems, the technical solution adopted in the utility model is:

A kind of inner screen continuous winding using fractional turns integer winding of the utility model has active line and screen line, work Make two conducting wires that line is parallel coiling, screen line is set between active line turn-to-turn and line.

In the thread-changing fragment position of active line, the active line of two parallel coilings rises to next again after a circle more than one Section, another directly rises to next section, forms the structure that integer adds half turn.

Cancel the filling insulating part of turn-to-turn.

The utility model has the advantages that and advantage:

1. the utility model coil carries out coiling, every section of the number of turns using two conducting wires (mostly composite conductor or transposed conductor) It is no longer limited to whole numbers of turns, half turn situation appropriate can be occurred according to product calculating, i.e., the case where integer adds half turn, effectively Ground improves the filling rate of coil, reduces coil cost.

2. in the utility model, when coil uses two conducting wire coilings, screen line equally can be using two and around that is, Screen line is put between turn-to-turn and line coiling simultaneously, and the screen number of wire turns of every section in this way coil at least increases one times, effectively increases Longitudinal capacitor of coil, the turn insulation thickness for shielding line can also be accordingly smaller.

3. the utility model can reduce the number of segment of interior screen section in the identical situation of longitudinal capacitor, coiling difficulty is reduced, it is special It is not that relatively small number of coil, above-mentioned both sides improvement effect become apparent larger and every for electric current section of the number of turns again, fills Rate enhances the anti-short circuit capability of coil while increase again.

Detailed description of the invention

Fig. 1 is the coiling schematic diagram of the inner screen continuous winding of the utility model fractional turns integer coiling.

Wherein, 1 is active line, and 1a is first active line, and 1b is the two active line, and 2 be screen line, and 2a is first screen Line, 2b are second screen line.

Specific embodiment

The utility model is further elaborated with reference to the accompanying drawings of the specification.

A kind of inner screen continuous winding using fractional turns integer winding of the utility model has active line 1 and screen line 2, Active line 1 is two conducting wires of parallel coiling, and screen line 2 includes first screen line 2a and second screen line 2b, is respectively arranged on work Between the turn-to-turn and line of line 1.

Being risen to again after a circle more than one in the thread-changing fragment position of active line 1, the active line of two parallel coilings Next section, another directly rises to next section, forms the structure that integer adds half turn.

The winding method of the above-mentioned inner screen continuous winding using fractional turns integer winding has active line 1 and screen line 2, Active line 1 uses two parallel coilings of conducting wire, and screen line 2 is using two (first bis- screen line 2b of screen line 2a and Gen) and around that is, First bis- screen line 2b of screen line 2a and Gen is respectively put between 1 turn-to-turn of active line and line coiling simultaneously, every section of screen line 2 of coil The number of turns at least doubles.

In the thread-changing fragment position of active line 1, the active line 1 one (i.e. first active line 1a) of two parallel coilings mostly around Rise to next section again after one circle, another (i.e. second active line 1b) directly rises to next section, two at next section again Parallel coiling.

The utility model eliminates the filling insulating part of turn-to-turn, and screen 2 turn insulation thickness of line reduces 20%, the number of segment of interior screen section Reduce 30%.

As shown in Figure 1,1~16 section is interior screen section, fractional turns integer coiling, the number of turns is 3.5 circles, between screen line 2 is online (as Between 1 and 1 ' conducting wire of first segment) and turn-to-turn (as between first segment 1 ' and 2 conducting wires) coiling simultaneously, the 17th section uses whole numbers of turns coiling, The number of turns is 4 circles.And Conventional coil then generallys use whole numbers of turns coiling, screen line 2 is also typically placed in turn-to-turn coiling, and same be directed to should Attached drawing, the 17th section still uses 4 circle coilings, and to guarantee the radial size of coil without departing from the 17th section, the 1st~16 mask segments just can only Using 3 circle coilings, in this way to guarantee that the identical mask segments of the radial size of coil just need to be filled with insulating paper lath, Er Qieping Line also can only 2 circle of coiling.The filling rate for effectively improving coil using the coil of fractional turns integer coiling in contrast, shields line The number of turns of section also increases 6 circles by 2 original circles, increases longitudinal capacitor of coil, and screen 2 turn insulation of line can also accordingly subtract Thin, according to primary Calculation, shielding 2 turn insulation thickness of line can be from 3.95 decline 1.65 or so, and the number of segment of interior screen section can reduce to 16 by 24 sections Section or so.For those high currents and the less coil of every section of the number of turns, since sectional area of wire is larger, using fractional turns integer around Method is by the filling rate to coil and improves the effect of longitudinal capacitor and becomes apparent, also more save the cost, the resistance to shorting energy of coil Power also further enhances.

Claims (3)

1. a kind of inner screen continuous winding using fractional turns integer winding, there is active line and screen line, active line be parallel around Two conducting wires of system, it is characterised in that: screen line is set between active line turn-to-turn and line.

2. the inner screen continuous winding according to claim 1 using fractional turns integer winding, it is characterised in that: in active line Thread-changing fragment position, the active line of two parallel coilings rises to next section after a circle more than one again, another directly rising To next section, the structure that integer adds half turn is formed.

3. the inner screen continuous winding according to claim 1 using fractional turns integer winding, it is characterised in that: cancel turn-to-turn Filling insulating part.