CN102306533B - High-power adjustable inductor - Google Patents

Abstract

The invention relates to a high-power adjustable inductor, which belongs to inductance devices. In an adjustment mode of the adjustable inductor, a control winding is added in a magnetic circuit generally, and an inductance value is adjusted by adjusting the current of the control winding. However, the adjustment mode is only relatively applicable to alternating current (AC) inductance; and in direction current (DC) circuits, DC magnetization is added, so that the operating ranges of inductance magnetic circuits are reduced, the electromagnetic properties of iron cores cannot be fully utilized, the inductor has relatively low efficiency, and the inductance volume is increased. The high-power adjustable inductor comprises an upper plate structure, a lower plate structure, two coils, an inductance value cursor, an inductance value scale plate and two inductance adjusting screw rods, wherein the inductance value cursor is arranged on the upper plate structure; the inductance value scale plate is arranged on the lower plate structure; the upper plate structure is connected with the lower plate structure through the two inductance adjusting screw rods; and the two coils are arranged between the upper plate structure and the lower plate structure. The high-power adjustable inductor is particularly applicable to DC, and has high efficiency, a wide adjustment range and a small volume.

Description

A kind of high-power controllable impedance

Technical field

The invention belongs to the inductance device technical field, relate to a kind of high-power controllable impedance.

Background technology

Various high-power inductance have obtained extensive use in its association area; Comprise fixed inductance and design controllable impedance for the operating frequency range that improves circuit; The regulative mode of controllable impedance generally is employed in increases a control winding in the magnetic circuit, regulate the electric current of control winding and regulate inductance value.But this regulative mode is more suitable for AC inductance; And for DC circuit owing to increased dc magnetization; The working range of inductance magnetic circuit is reduced, and the electromagnetic performance of iron core can not make full use of, and efficient is lower; Cause the inductance volume to increase, this point is particularly important for high-power inductance.

Summary of the invention

In order to solve common inductance; The electromagnetic performance of iron core can not make full use of in DC circuit work, and efficient is lower, the problem that causes the inductance volume to increase; The present invention provides a kind of powerful, working range than broad, is suitable for the inductance value adjustable device of DC circuit.

A kind of high-power controllable impedance; Comprise train wheel bridge, upper iron core, two upper iron core standing screws, upper iron core fixed head, right coil, inductance output line, right interferric space, right inductance value vernier, right inductance value target, right adjustment of inductance nut, right adjustment of inductance screw rod, two standing screw unshakable in one's determination, left and right sides coil connecting line, lower plate, left inductance value target, unshakable in one's determination, fixed head unshakable in one's determination, left adjustment of inductance nut, left adjustment of inductance screw rod, left interferric space, left coil, left inductance value vernier and inductance incoming lines down down down; Upper iron core is in the middle of train wheel bridge and the upper iron core fixed head; Be fixed on the middle part of train wheel bridge through the upper iron core standing screw, following iron core is in the middle of lower plate and the fixed head unshakable in one's determination down, is fixed on the middle part of lower plate through standing screw unshakable in one's determination down; The two ends of left side adjustment of inductance screw rod respectively with train wheel bridge and lower plate through being threaded; Adjustment of inductance screw rod middle part, a left side left adjustment of inductance nut that is connected, the two ends of right adjustment of inductance screw rod respectively with train wheel bridge and lower plate through being threaded, right adjustment of inductance nut is connected in the middle part of the right adjustment of inductance screw rod; Left side inductance value target is connected on the lower plate; Left side inductance value vernier is connected on the train wheel bridge, and right inductance value target is connected on the lower plate, and right inductance value vernier is connected on the train wheel bridge; Connect the inductance incoming line on the left coil; Connect the inductance output line on the right coil, connect through left and right sides coil connecting line between left coil and the right coil, left inductance value target is parallel with left inductance value vernier; Right inductance value vernier is parallel with right inductance value target, on left inductance value target and the right inductance value target respectively marking interferric space value and corresponding inductance value as scale.

Good effect of the present invention:

High-power controllable impedance of the present invention, volume is little, and power is big, and the electromagnetic performance utilance of iron core is high, particularly is fit to DC circuit.

Description of drawings

Fig. 1 is the front view of the high-power controllable impedance of the present invention;

Fig. 2 is the left view of the high-power controllable impedance of the present invention;

Fig. 3 is the sketch map upper and lower unshakable in one's determination of the high-power controllable impedance of the present invention.

Among the figure: 1, train wheel bridge, 2, upper iron core, 3, the upper iron core standing screw, 4, the upper iron core fixed head, 5, right coil; 6, inductance output line, 7, right interferric space, 8, right inductance value vernier, 9, right inductance value target, 10, right adjustment of inductance nut; 11, right adjustment of inductance screw rod, 12, following standing screw unshakable in one's determination, 13, left and right sides coil connecting line, 14, lower plate, 15, left inductance value target; 16, down unshakable in one's determination, 17, fixed head unshakable in one's determination down, 18, left adjustment of inductance nut, 19, left adjustment of inductance screw rod; 20, left interferric space, 21, left coil, 22, left inductance value vernier, 23, the inductance incoming line.

Embodiment

Below in conjunction with accompanying drawing the present invention is done specific descriptions.

As illustrated in fig. 1 and 2; A kind of high-power controllable impedance; Comprise train wheel bridge 1, upper iron core 2, two upper iron core standing screws 3, upper iron core fixed head 4, right coil 5, inductance output line 6, right interferric space 7, right inductance value vernier 8, right inductance value target 9, right adjustment of inductance nut 10, right adjustment of inductance screw rod 11, two standing screws down unshakable in one's determination 12, left and right sides coil connecting line 13, lower plate 14, left inductance value target 15, unshakable in one's determination 16, fixed head down unshakable in one's determination 17, left adjustment of inductance nut 18, left adjustment of inductance screw rod 19, left interferric space 20, left coil 21, left inductance value vernier 22 and inductance incoming line 23 down; It is middle with upper iron core fixed head 4 that upper iron core 2 is in train wheel bridge 1; Be fixed on the middle part of train wheel bridge 1 through upper iron core standing screw 3; Following unshakable in one's determination 16 are in the middle of lower plate 14 and the fixed head 17 down unshakable in one's determination; Be fixed on the middle part of lower plate 14 through following standing screw 12 unshakable in one's determination, the two ends of left adjustment of inductance screw rod 19 respectively with train wheel bridge 1 and lower plate 14 through being threaded, the left adjustment of inductance screw rod 19 middle parts left adjustment of inductance nut 18 that is connected; The two ends of right adjustment of inductance screw rod 11 respectively with train wheel bridge 1 and lower plate 14 through being threaded; The right adjustment of inductance screw rod 11 middle parts right adjustment of inductance nut 10 that is connected, left inductance value target 15 is connected on the lower plate 14, and left inductance value vernier 22 is connected on the train wheel bridge 1; Right inductance value target 9 is connected on the lower plate 14, and right inductance value vernier 8 is connected on the train wheel bridge 1.

As shown in Figure 1; Upper iron core 2 is the shape of a hoof; Two salient angles are in respectively in left coil 21 and the right coil 5; Following unshakable in one's determination 16 be the shape of a hoof, and two salient angles are in respectively in left coil 21 and the right coil 5, upper iron core 2 with unshakable in one's determination 16 in left coil, form left interferric space 20 down, the right interferric space 7 of formation in right coil 5.

As shown in Figure 1, the screw on train wheel bridge 1 and the lower plate 14 is an internal thread, and the screw thread at two ends is opposite on left adjustment of inductance screw rod 19 and the right adjustment of inductance screw rod 11.

As shown in Figure 1, train wheel bridge 1 and lower plate 14 can do relative motion under the effect of left adjustment of inductance screw rod 19 and right adjustment of inductance screw rod 11.

As shown in Figure 1, connect inductance incoming line 23 on the left coil 21, connect inductance output line 6 on the right coil 5, connect through left and right sides coil connecting line 13 between left coil 21 and the right coil 5.

As shown in Figure 1; Left side inductance value target 15 is in parastate with left inductance value vernier 22; Right inductance value vernier 8 is in parastate with right inductance value target 9; On left side inductance value target 15 and the right inductance value target 9 respectively marking interferric space value and corresponding inductance value as scale, the formula of calculating interferric space value and inductance value:

$L=\frac{0.4{\mathrm{\πN}}^2{S}_c}{l_g^{\′}}\×{10}^{-8}=\frac{0.4\mathrm{\π}\×{2000}^2\×32}{0.84}=1.9$

$l_g^{\′}=l_g\frac{S_c}{S_g}=1\×\frac{32}{38.25}=0.84$

$S_g=(a+\frac{l_g}{2})(b+\frac{l_g}{2})=(4+\frac{1}{2})(8+\frac{1}{2})=38.25$

In the formula:

L---the inductance value of high-power controllable impedance device calculates 1.9H;

N---coil turn; If 2000

l _g---interferric space value, cm; If 1

S _c---net sectional area unshakable in one's determination, cm ²Calculate 32

S _g---consider the interferric space magnetic conductive area after the interferric space magnetic flux spreads; 38.25

A---core dimensions, cm; If 4,

B---core dimensions, cm; If 8.

Promptly regulate left interferric space 20, right interferric space 7 is equal to 1cm; The inductance value of high-power controllable impedance device equals 1.9H; This value has been marked on when making high-power controllable impedance device on left target unshakable in one's determination 15, the right inductance value target 9; And harmonize left inductance value vernier 22 and the relative position of left inductance value target 15, the relative position of harmonize right inductance value vernier 8 and right inductance value target 9; When high-power controllable impedance uses, rotate left adjustment of inductance nut 18, make left inductance value vernier 22 aim at 1.9H position on the left inductance value target 15; Rotate right adjustment of inductance nut 10, make right inductance value vernier 8 aim at 1.9H position on the right inductance value target 9, respectively that left adjustment of inductance screw rod 19, right adjustment of inductance screw rod 11 and train wheel bridge 1, lower plate 14 is fixing with nut again; Promptly accomplished the adjusting work of high-power controllable impedance device inductance value, with inductance incoming line 23 and the 6 place in circuit work of inductance output line.

As shown in Figure 3, upper iron core 2 is processed by CD40 * 80 * 200 model iron cores with following unshakable in one's determination 16.

Claims (3)

1. high-power controllable impedance; It is characterized in that, comprise train wheel bridge (1), upper iron core (2), two upper iron core standing screws (3), upper iron core fixed head (4), right inductance value vernier (8), right inductance value target (9), right adjustment of inductance nut (10), right adjustment of inductance screw rod (11), two following standing screws unshakable in one's determination (12), lower plate (14), left inductance value target (15), (16) down unshakable in one's determination, following fixed head unshakable in one's determination (17), left adjustment of inductance nut (18), left adjustment of inductance screw rod (19) and left inductance value verniers (22); Upper iron core (2) is in the middle of train wheel bridge (1) and the upper iron core fixed head (4); Be fixed on the middle part of train wheel bridge (1) through upper iron core standing screw (3); Following (16) unshakable in one's determination are in lower plate (14) and fixed head unshakable in one's determination (17) is middle down; Be fixed on the middle part of lower plate (14) through following standing screw unshakable in one's determination (12), the two ends of left adjustment of inductance screw rod (19) respectively with train wheel bridge (1) and lower plate (14) through being threaded, left adjustment of inductance nut (18) is connected in the middle part of the left adjustment of inductance screw rod (19); The two ends of right adjustment of inductance screw rod (11) respectively with train wheel bridge (1) and lower plate (14) through being threaded; Right adjustment of inductance screw rod (11) the middle part right adjustment of inductance nut (10) that is connected, left inductance value target (15) is connected on the lower plate (14), and left inductance value vernier (22) is connected on the train wheel bridge (1); Right inductance value target (9) is connected on the lower plate (14); Right inductance value vernier (8) is connected on the train wheel bridge (1), and upper iron core (2) is the shape of a hoof, and two salient angles are in respectively in left coil (21) and the right coil (5); Following (16) unshakable in one's determination are the shape of a hoof; Two salient angles are in respectively in left coil (21) and the right coil (5), and upper iron core (2) and (16) down unshakable in one's determination form left interferric space (20), in right coil (5), form right interferric space (7) in left coil (21), and left inductance value target (15) is parallel with left inductance value vernier (22); Right inductance value vernier (8) is parallel with right inductance value target (9), distinguishes marking interferric space value and corresponding inductance value on left inductance value target (15) and the right inductance value target (9) as scale.

2. a kind of high-power controllable impedance according to claim 1; It is characterized in that; This inductance also comprises left coil (21) and right coil (5); Said left coil (21) is gone up and is connected inductance incoming line (23), and right coil (5) is gone up and connected inductance output line (6), connects through left and right sides coil connecting line (13) between left coil (21) and the right coil (5).

3. a kind of high-power controllable impedance according to claim 1; It is characterized in that; Screw on said train wheel bridge (1) and the lower plate (14) is an internal thread, and the screw thread at the last two ends of left adjustment of inductance screw rod (19) is opposite and the screw threads last two ends of right adjustment of inductance screw rod (11) are opposite.

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