CN204315357U - A kind of three-phase equilibrium reactor of new construction - Google Patents

Abstract

The three-phase equilibrium reactor of a kind of new construction disclosed in the utility model, the coil comprising upper and lower iron yoke, A, B, C three-phase stem stem and be coated on every phase stem stem, be provided with insulation board between every phase stem stem and upper and lower iron yoke and do gap, it is characterized in that, the number of turn of B phase coil is less than the number of turn of A phase coil and the number of turn of C phase coil.The utility model compared with prior art has following advantages: closely, be less than 2% under sensibility reciprocal unbalance factor is normal, total manufacturing cost reduces by 5% for B phase sensibility reciprocal and other two sensibility reciprocals.

Description

A kind of three-phase equilibrium reactor of new construction

Technical field

The utility model relates to reactor technical field, particularly a kind of three-phase equilibrium reactor of new construction

Background technology

Be three column types and tri-phase iron core sectional area is equal at the three-phase reactor applied in the market, the advantage of this structure is that structural manufacturing process is simple, and shortcoming is poor-performing, and improving performance, will significantly to improve manufacturing cost high.This is because three-phase magnetic circuit is uneven and then cause three-phase sensibility reciprocal unbalance factor to reach more than 5%, the tolerance of every phase inductance amount is ± 5%, both subtract each other that tolerance leaving technique and material for just only less than ± 3%, the consistency of material is generally ± 2%, the remaining tolerance leaving technique for is just only less than ± 1%, so the disposable rate percent of pass very low (generally less than 50%) that these series of products manufacture, this just illustrates that manufacturing cost will far above other products (First Pass Yield be more than 90%), analyze below by know-why: in the performance parameter of reactor, most important is exactly inductance value, the computing formula of inductance value is as follows:

$L=L_L=\frac{0.4\mathrm{\π}{N}^2{S}_c}{l_g+\frac{l_c}{\mathrm{\μ}~}}\×{10}^{-8}$

In above formula: L is inductance value (H), μ ~ be iron core ac permeability, and N is coil turn, and Sc is iron core net sectional area (cm ²), Lc is the average length of magnetic path of iron core (cm), and Lg is non magnetic gas length (cm) in iron circuit.

As can be seen from formula, the parameter affecting inductance value has non magnetic gas length in coil turn, iron circuit, iron core net sectional area and the average length of magnetic path of iron core.In common three-phase three-column reactor, the number of turn, the air gap of three-phase are all the same with core area, and the length of magnetic path is different only.

See Fig. 1, existing reactor comprise upper and lower iron yoke 1,2, three-phase stem stem 3 and the coil 4 that is coated on every phase stem stem 3, be provided with insulation board 5,6 between every phase stem stem 3 and upper and lower iron yoke 1,2.

Equal with the C equivalent length of magnetic path see Fig. 2, the A equivalent length of magnetic path, the B equivalent length of magnetic path equals the parallel connection of the A equivalent length of magnetic path and C equivalent length of magnetic path two-phase, namely only has the half of the A equivalent length of magnetic path or the C equivalent length of magnetic path.By calculating and verifying, between the sensibility reciprocal of A phase and C phase is about 0.9 times of B phase sensibility reciprocal, if so think that three-phase equilibrium rate is as far as possible close, that just needs the sensibility reciprocal reducing B phase, and the sectional area that can reduce B phase according to formula reaches the object reducing B phase sensibility reciprocal.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of sensibility reciprocal unbalance factor reducing three-phase reactor also will reduce the three-phase equilibrium reactor of the new construction of production cost for the problem existing for existing three-phase equilibrium reactor simultaneously, the three-phase equilibrium reactor B phase sensibility reciprocal of this new construction and other two sensibility reciprocals are closely, be less than 2% under sensibility reciprocal unbalance factor is normal, total manufacturing cost reduces by 5%.

Technical problem to be solved in the utility model can be achieved through the following technical solutions:

A kind of three-phase equilibrium reactor of new construction, the coil comprising upper and lower iron yoke, A, B, C three-phase stem stem and be coated on every phase stem stem, be provided with insulation board between every phase stem stem and upper and lower iron yoke and do gap, it is characterized in that, the number of turn of B phase coil is less than the number of turn of A phase coil and the number of turn of C phase coil.

In a preferred embodiment of the present utility model, the number of turn of described B phase coil only has 95% of 95% of the number of turn of A phase coil and the number of turn of C phase coil.

Owing to have employed technical scheme as above, the utility model compared with prior art has following advantages: closely, be less than 2% under sensibility reciprocal unbalance factor is normal, total manufacturing cost reduces by 5% for B phase sensibility reciprocal and other two sensibility reciprocals.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing three-phase three-column interphase reactor.

Fig. 2 is the magnetic circuit schematic diagram of existing three-phase three-column interphase reactor.

Fig. 3 is the structural representation of the three-phase equilibrium reactor of the utility model new construction.

Fig. 4 is the end view of Fig. 3.

Fig. 5 is the A-A cutaway view of Fig. 3.

Embodiment

See Fig. 3 and Fig. 4, the three-phase three-column interphase reactor of the new construction provided in figure, comprise upper and lower iron yoke 10,20, A, B, C three-phase stem stem and be coated on A phase coil 41, B phase coil 42, B phase coil 43, A on A, B, C three-phase stem stem, be provided with insulation board 50,60 between B, C three-phase stem stem and upper and lower iron yoke 10,20 and do air gap.Upper and lower iron yoke 10,20 is by upper and lower folder 70,80 and securing member clamping.

The number of turn see Fig. 5, B phase coil 42 only has 95% of 95% of the number of turn of A phase coil 41 and the number of turn of C phase coil 43.

Claims (2)

1. the three-phase equilibrium reactor of a new construction, the coil comprising upper and lower iron yoke, A, B, C three-phase stem stem and be coated on every phase stem stem, be provided with insulation board between every phase stem stem and upper and lower iron yoke and do gap, it is characterized in that, the number of turn of B phase coil is less than the number of turn of A phase coil and the number of turn of C phase coil.

2. the three-phase equilibrium reactor of a kind of new construction as claimed in claim 1, is characterized in that, the number of turn of described B phase coil only has 95% of 95% of the number of turn of A phase coil and the number of turn of C phase coil.