CN203288397U - Composite structure of transformer and reactor - Google Patents
Composite structure of transformer and reactor Download PDFInfo
- Publication number
- CN203288397U CN203288397U CN201320312821XU CN201320312821U CN203288397U CN 203288397 U CN203288397 U CN 203288397U CN 201320312821X U CN201320312821X U CN 201320312821XU CN 201320312821 U CN201320312821 U CN 201320312821U CN 203288397 U CN203288397 U CN 203288397U
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- iron yoke
- connecting rod
- clamping plate
- transformer
- reactor
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Abstract
The utility model provides a composite structure of a transformer and a reactor. The composite structure comprises a first magnetic leg, a second magnetic leg, a first iron yoke, a second iron yoke and a third iron yoke, wherein the first iron yoke, the second iron yoke and the third iron yoke are arranged oppositely. The second iron yoke, the second magnetic leg and the third iron yoke form a transformer structure. The first iron yoke is a trapezoid body formed by enclosure of two opposite rectangular bottom faces, two opposite rectangular side faces and two opposite trapezoid side faces. The bottom face, with the larger area, of the two bottom faces of the first iron yoke is jointed with the first surface of the first magnetic leg. The second surface, opposite to the first surface of the first magnetic leg, of the first magnetic leg is jointed with the second iron yoke and/or the second magnetic leg. The second iron yoke and the third iron yoke are respectively jointed with the second magnetic leg.
Description
Technical field
The utility model relates to the composite construction of a kind of transformer and reactor.
Background technology
At wind turbine, inverter and frequency converter, uninterrupted power supply (Uninterruptible Power System, UPS) system, railway and the medium-and-large-sized power inverter of many commercial Application application scenario, isolate, boost or step-down transformer usually is used in combination together with reactor.The transformer of common two Split type structures and reactor need to independently be installed in electrical control cabinet, and carry out the copper bar connection of electric equipment compartment, and this all brings many inconvenience to site operation, installation, debugging etc.Because transformer and the reactor volume of Split type structure are larger, supporting electrical control cabinet also needs very large space, causes installing space and equipment cost all to increase simultaneously.
In addition, the iron yoke in reactor is all the cuboid iron yoke of 90 degree corners, its overall volume is large, installing space and equipment cost all higher.
The utility model content
The problem that the utility model solves be existing transformer and reactor the Split type structure volume all large, installing space and cost higher.
For addressing the above problem, the utility model provides the composite construction of a kind of transformer and reactor, comprise: the first core limb, the second core limb, and the first iron yoke that is oppositely arranged, the second iron yoke and three-iron yoke, described the second iron yoke, the second core limb and three-iron yoke form transformer device structure; Described the first iron yoke is the prismatoid that two relative rectangular bottom surface, the trapezoidal side relative with two, two relative rectangle sides surround, and the bottom surface that in two bottom surfaces of described the first iron yoke, area is larger engages with the first surface of described the first core limb; The second surface of described first core limb relative with the first surface of described the first core limb engages with described the second iron yoke and/or the second core limb; Described the second iron yoke and three-iron yoke engage with described the second core limb respectively.
Compared with prior art, technical solutions of the utility model adopt prismatoid iron yoke, have reduced iron yoke volume and quality in the situation of the normal operation of assurance iron yoke, thereby have reduced volume, installing space and the cost of the composite construction of transformer and reactor.And, the second iron yoke that technical solutions of the utility model adopt to share, the use amount of iron yoke when having reduced transformer and reactor and being combined with, further reduced the volume of the composite construction of transformer and reactor, reduced cost and power consumption.
Description of drawings
Fig. 1 is a front view of the composite construction of the transformer of the utility model embodiment and reactor;
Fig. 2 is a stereogram of the composite construction of the transformer of the utility model embodiment and reactor;
Fig. 3 is the stereogram of the first iron yoke clamping device of the utility model embodiment;
Fig. 4 is the vertical view of the first iron yoke clamping device of the utility model embodiment;
Fig. 5 is the stereogram of the second iron yoke clamping device of the utility model embodiment;
Fig. 6 is the stereogram of the three-iron yoke clamping device of the utility model embodiment;
Fig. 7 is another stereogram of the composite construction of the transformer of the utility model embodiment and reactor;
Fig. 8 is that transformer device structure of the present utility model is the front view of A type structure;
Fig. 9 is the front view that transformer device structure of the present utility model adopts one 90 ° of direct crack structures;
Figure 10 is the front view that transformer device structure of the present utility model adopts another 90 ° of direct crack structures;
Figure 11 is the front view that transformer device structure of the present utility model adopts 45 ° of mitre structures.
Embodiment
Described as background technology, the existing core construction cuboid iron yokes that adopt 90 ° of corners more, its overall volume is large, installing space and equipment cost all higher.
As shown in Figure 1, the utility model embodiment provides the composite construction of a kind of transformer and reactor, comprise: the first core limb 4, the second core limb 5, and the first iron yoke 1 that is oppositely arranged, the second iron yoke 2 and three-iron yoke 3, described the second iron yoke 2, the second core limb 5 and three-iron yoke 3 form transformer device structures.
The first iron yoke 1 is the prismatoid that two relative rectangular bottom surface, the trapezoidal side relative with two, two relative rectangle sides surround, and the bottom surface that in two bottom surfaces of the first iron yoke 1, area is larger engages with the first surface 41 of described the first core limb 4.The second surface 42 of first core limb 4 relative with the first surface 41 of the first core limb 4 engages with the second iron yoke 2 and/or the second core limb 5.Described the second iron yoke 2 and three-iron yoke 3 engage with described the second core limb 5 respectively.
In conjunction with illustrated in figures 1 and 2, the prismatoid that the first iron yoke 1 surrounds for the first relative bottom surface 11 and the second bottom surface 12, the trapezoidal side 14 relative with two, two relative rectangle sides 13, the area of the second bottom surface 12 is greater than the area of described the first bottom surface 11.Specifically, the first iron yoke 1 has certain thickness prismatoid stack of laminations by several and forms, and the first bottom surface 11 and the second bottom surface 12 that stack of laminations forms are parallel to each other, and two relative trapezoidal sides 14 are parallel to each other.
The second bottom surface 12 of the first iron yoke 1 engages with the first surface 41 of the first core limb 4, makes the first iron yoke 1 and the first core limb 4 be bonded together.The juncture of the second bottom surface 12 of the first iron yoke 1 and the first surface 41 of the first core limb 4 can adopt the glue of prior art to bond or other.
In the transformer device structure that is formed by the second iron yoke 2, the second core limb 5 and three-iron yoke 3 illustrated in figures 1 and 2, the surface engagement that the second iron yoke 2 and three-iron yoke 3 can be relative with two of the second core limb 5 respectively.Concrete, the second iron yoke 2 and three-iron yoke 3 are cuboid, the first surface 21 of the second iron yoke 2 engages with the second surface 42 of the first core limb 4, the second surface 22 of the second iron yoke 2 engages with the first surface 51 of the second core limb 5, and the first surface 31 of three-iron yoke 3 engages with the second surface 52 of the second core limb 5.
The first surface 21 of the second iron yoke 2 engages with the second surface 42 of the first core limb 4, makes the second iron yoke 2 and the first core limb 4 be bonded together.The second surface 22 of the second iron yoke 2 engages with the first surface 51 of the second core limb 5, makes the second iron yoke 2 and the second core limb 5 be bonded together.The first surface 31 of three-iron yoke 3 engages with the second surface 52 of the second core limb 5, makes three-iron yoke 3 and the second core limb 5 be bonded together.Above-mentioned juncture can adopt the glue of prior art to bond or other.
In the present embodiment, the first iron yoke 1, the first core limb 4 and the second iron yoke 2 have formed the first electromagnetic circuit, and the second iron yoke 2, the second core limb 5 and three-iron yoke 3 have formed the second electromagnetic circuit, and the first electromagnetic circuit and the second electromagnetic circuit share the second iron yoke 2.
Generally seldom take 90 degree corners of cuboid iron yoke due to electromagnetic circuit,, so the first iron yoke of the present embodiment adopts prismatoid iron yoke, reduced iron yoke volume and quality, also can not affect the normal operation of iron yoke.And the reactor of the present embodiment and transformer device structure share the second iron yoke, have further reduced the volume of the composite construction of reactor and transformer, have reduced cost and power consumption.
In conjunction with Fig. 3 and shown in Figure 4, the transformer of the present embodiment and the composite construction of reactor can also comprise: the first iron yoke clamping device.
The first iron yoke clamping device comprises: two the first iron yoke clamping plate 61 and the first iron yoke connecting rod 62.Two the first iron yoke clamping plate 61 are bonded together by described the first iron yoke connecting rod 62, and two the first iron yoke clamping plate 61 clamp two trapezoidal sides of described the first iron yoke 1, i.e. two relative trapezoidal sides 14.
The first iron yoke connecting rod 62 can be positioned at two relative 13 outsides, rectangle side of the first iron yoke 1, with described the first iron yoke 1, does not contact.For example be positioned at the first iron yoke connecting rod 62 at two ends in Fig. 3 and Fig. 4.
Continue with reference to shown in Figure 1, the first iron yoke 1 can have the first through hole 15, and described the first through hole 15 runs through two relative trapezoidal sides 14 of the first iron yoke 1.Arranging of described the first through hole 15 can be determined according to the length of the first iron yoke 1.The first iron yoke connecting rod 62 can be placed in the first through hole 15, the first iron yoke connecting rod 62 in the middle of for example being positioned in Fig. 3 and Fig. 4.
The first iron yoke clamping device can both comprise the first iron yoke connecting rod 62 that is positioned at the first through hole 15, comprised again the first iron yoke connecting rod 62 in two relative 13 outsides, rectangle side that are positioned at the first iron yoke 1.
When the first iron yoke clamping device comprises the first iron yoke connecting rod 62 in two relative 13 outsides, rectangle side that are positioned at the first iron yoke 1, the quantity of the first iron yoke connecting rod 62 that is positioned at two relative 13 outsides, rectangle side of the first iron yoke 1 can be the even number greater than 2, wherein be positioned at the first iron yoke connecting rod 62 of side rectangle side 13 relative with two of the first iron yoke 1 substantially parallel, but be not in contact with it.
The first iron yoke clamping plate 61 can comprise: the first clamping part 611 that is bonded together and the first compressed part 612.The first compressed part 612 of 14, two the first iron yoke clamping plate 61 in two trapezoidal sides of first clamping part 611 clamping the first iron yokes 1 of two the first iron yoke clamping plate 61 is relative with the bottom surface of the first iron yoke 1.
The first iron yoke clamping device can also comprise: insulation board 63.Insulation board 63 is pressed on the first bottom surface 11 that in two bottom surfaces that are attached to the first iron yoke 1, area is less by the first compressed part 612.
Two relative trapezoidal sides 14 are parallel or approximate parallel, and the first clamping part 611 of two the first iron yoke clamping plate 61 clamps two relative trapezoidal sides 14 of the first iron yoke 1 and can realize by the distance of dwindling between two the first clamping parts 611.For example, the two ends of the first iron yoke connecting rod 62 have screw thread, the center position rotation nut corresponding with the first iron yoke connecting rod 62 two ends screw threads to the first iron yoke connecting rod 62 can dwindle two distances between the first clamping part 611, thereby will form the core lamination clamping of the first iron yoke 1.
As shown in Figure 5, the composite construction of the transformer of the present embodiment and reactor can also comprise: the second iron yoke clamping device.
The second iron yoke clamping device comprises: two the second iron yoke clamping plate 71 and the second iron yoke connecting rod 72.Two the second iron yoke clamping plate 71 are bonded together by the second iron yoke connecting rod 72, and two the second iron yoke clamping plate 71 clamp two relative surfaces of the second iron yoke 2.
The second iron yoke connecting rod 72 can be positioned at the outside of the second iron yoke 2, with the second iron yoke 2, does not contact.
Continue with reference to shown in Figure 1, the second iron yoke 2 can have the second through hole 25, the second through holes 25 and run through two relative surfaces of the second iron yoke 2.Arranging of described the second through hole 25 can be determined according to the length of the second iron yoke 2.The second iron yoke connecting rod 72 can be placed in the second through hole 25, the second iron yoke connecting rod 72 in the middle of for example being positioned in Fig. 5.
The second iron yoke clamping device can both comprise the second iron yoke connecting rod 72 that is positioned at the second through hole 25, comprised again the second iron yoke connecting rod 72 that is positioned at second iron yoke 2 outsides.
Two relative surfaces of two second iron yoke clamping plate 71 clamping the second iron yokes 2 can be realized by the distance of dwindling between two the second iron yoke clamping plate 71.For example, the two ends of the second iron yoke connecting rod 72 have screw thread, to the center position of the second iron yoke connecting rod 72 rotation nut corresponding with the second iron yoke connecting rod 72 two ends screw threads, can dwindle two distances between the second iron yoke clamping plate 71.
As shown in Figure 6, the composite construction of the transformer of the present embodiment and reactor can also comprise: three-iron yoke clamping device.
Three-iron yoke clamping device comprises: two three-iron yoke clamping plate 81 and three-iron yoke connecting rod 82.Two three-iron yoke clamping plate 81 are bonded together by three-iron yoke connecting rod 82, and two three-iron yoke clamping plate 81 clamp two relative surfaces of three-iron yoke 3.
Three-iron yoke connecting rod 82 can be positioned at the outside of three-iron yoke 3, with three-iron yoke 3, does not contact.
Continue with reference to shown in Figure 1, three-iron yoke 3 can have third through-hole 35, and third through-hole 35 runs through two relative surfaces of three-iron yoke 3.Arranging of described third through-hole 35 can be determined according to the length of three-iron yoke 3.Three-iron yoke connecting rod 82 can be placed in third through-hole 35, the three-iron yoke connecting rod 82 in the middle of for example being positioned in Fig. 6.
Three-iron yoke clamping device can both comprise the three-iron yoke connecting rod 82 that is positioned at third through-hole 35, comprised again the three-iron yoke connecting rod 82 that is positioned at three-iron yoke 3 outsides.
Two relative surfaces of two three-iron yoke clamping plate 81 clamping three-iron yokes 3 can be realized by the distance of dwindling between two three-iron yoke clamping plate 81.For example, the two ends of three-iron yoke connecting rod 82 have screw thread, to the center position of the three-iron yoke connecting rod 82 rotation nut corresponding with three-iron yoke connecting rod 82 two ends screw threads, can dwindle two distances between three-iron yoke clamping plate 81.
If the first iron yoke 1 in the above, three-iron yoke 3 assembles below, three-iron yoke clamping structure can also comprise a surface engagement of 83, two three-iron yoke clamping plate of supporter 81 and supporter 83.If the first iron yoke 1 below, three-iron yoke 3 assembles in the above, the first iron yoke clamping structure also can comprise supporter, a surface engagement of two the first iron yoke clamping plate 61 and supporter.
As shown in Figure 7, the composite construction of the transformer of the present embodiment and reactor can also comprise: the first core limb connecting rod 91 and the second core limb connecting rod 92.
Continuation, to Fig. 6, can have head rod fixture 64 on the first clamping part 611 of the first iron yoke clamping plate 61 with reference to figure 3, and head rod fixture 64 has the first through hole 641; On the second iron yoke clamping plate, 71 have the second connecting rod fixture 74, the second connecting rod fixtures 74 and have the second through hole 741 and the 3rd through hole 742; Have the 3rd connecting rod fixture 84, the three connecting rod fixtures 84 on three-iron yoke clamping plate 81 and have the 4th through hole 841.
The first core limb connecting rod 91 is placed in the first through hole 641 and the second through hole 741, is used for fixing described head rod fixture 64 and the second connecting rod fixture 74.The second core limb connecting rod 92 is placed in the 3rd through hole 742 and the 4th through hole 841, is used for fixing the second connecting rod fixture 74 and the 3rd connecting rod fixture 84.Realize that fixing mode can be: core limb connecting rod two ends have screw thread, and described threaded portion stretches out through hole, and nut that will be corresponding with described screw thread screws to core limb connecting rod center position.
In the composite construction of transformer shown in Figure 7 and reactor, First Line bag 10, the second core limb 5 outsides that first core limb 4 outsides have a coating have the second line bag 11 of coating.The first iron yoke connecting rod 62, the second iron yoke connecting rod 72 are parallel or approximate parallel with three-iron yoke connecting rod 82, it is parallel or approximate parallel that the first clamping part 611 of described the first iron yoke clamping plate 61, the second iron yoke clamping plate 71 and three-iron yoke clamping plate 81 are positioned at same plane, and the first core limb connecting rod 91 that described head rod fixture 64, the second connecting rod fixture 74 and the 3rd connecting rod fixture 84 are fixed is parallel or approximate parallel in a longitudinal direction with the second core limb connecting rod 92.
In other embodiments, the transformer device structure that the second iron yoke 2, the second core limb 5 and three-iron yoke 3 form can also adopt the transformer of other structures in prior art to realize, for example, and A type structure, the 90 direct crack structures of degree or 45 degree mitre structures.
As shown in Figure 8, in the transformer device structure of A type structure, the first surface 21 of the second iron yoke 2 and the first surface 51 of the second core limb 5 are positioned at the same side, and the first surface 51 of the first surface 21 of the second iron yoke 2 and the second core limb 5 is bonded into a surface; The second surface 32 of the three-iron yoke 3 relative with the first surface 31 of three-iron yoke 3 and the second surface 52 of the second core limb 5 are positioned at the same side, and the second surface 52 of the second surface 32 of three-iron yoke 3 and the second core limb 5 is bonded into a surface.
As shown in Figure 9 and Figure 10, in the transformer device structure of the 90 direct crack structures of degree, the first surface 21 of the second iron yoke 2 and the first surface 51 of the second core limb 5 are positioned at the same side, and the first surface 51 of the first surface 21 of the second iron yoke 2 and the second core limb 5 is bonded into a surface; The second surface 32 of three-iron yoke 3 and the second surface 52 of the second core limb 5 are positioned at the same side, and the second surface 52 of the second surface 32 of three-iron yoke 3 and the second core limb 5 is bonded into a surface.
As shown in figure 11, in the transformer device structure of 45 degree mitre structures, the second core limb 5 becomes miter angle with the composition surface of the second iron yoke 2 with horizontal plane, and the second core limb 5 becomes miter angle with the composition surface of three-iron yoke 3 with horizontal plane.
The position relationship that has " relatively " between two technical characterictics that above-described embodiment is mentioned refers between two technical characterictics parallel or approximate parallel.
Although the utility model discloses as above, the utility model not is defined in this.Any those skilled in the art, within not breaking away from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection range of the present utility model should be as the criterion with the claim limited range.
Claims (15)
1. the composite construction of a transformer and reactor, it is characterized in that, comprise: the first core limb, the second core limb, and the first iron yoke that is oppositely arranged, the second iron yoke and three-iron yoke, described the second iron yoke, the second core limb and three-iron yoke form transformer device structure;
Described the first iron yoke is the prismatoid that two relative rectangular bottom surface, the trapezoidal side relative with two, two relative rectangle sides surround, and the bottom surface that in two bottom surfaces of described the first iron yoke, area is larger engages with the first surface of described the first core limb;
The second surface of described first core limb relative with the first surface of described the first core limb engages with described the second iron yoke and/or the second core limb;
Described the second iron yoke and three-iron yoke engage with described the second core limb respectively.
2. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, also comprises: two the first iron yoke clamping plate and the first iron yoke connecting rod;
Described two the first iron yoke clamping plate are bonded together by described the first iron yoke connecting rod, and described two the first iron yoke clamping plate clamp two trapezoidal sides of described the first iron yoke.
3. the composite construction of transformer as claimed in claim 2 and reactor, it is characterized in that, described the first iron yoke clamping plate comprise: the first clamping part that is bonded together and the first compressed part, the first clamping part of described two the first iron yoke clamping plate clamps two trapezoidal sides of described the first iron yoke, and the first compressed part of described two the first iron yoke clamping plate is relative with the bottom surface of described the first iron yoke.
4. the composite construction of transformer as claimed in claim 3 and reactor, is characterized in that, also comprises: insulation board, described insulation board is pressed on the bottom surface that in two bottom surfaces that are attached to described the first iron yoke, area is less by described the first compressed part.
5. the composite construction of transformer as claimed in claim 2 and reactor, it is characterized in that, described the first iron yoke has the first through hole, and described the first through hole runs through two relative trapezoidal sides of described the first iron yoke, and described the first iron yoke connecting rod is placed in described the first through hole.
6. the composite construction of transformer as claimed in claim 2 and reactor, is characterized in that, also comprises: supporter; A surface engagement of described two the first iron yoke clamping plate and described supporter.
7. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, also comprises: two the second iron yoke clamping plate and the second iron yoke connecting rod;
Described two the second iron yoke clamping plate are bonded together by described the second iron yoke connecting rod, and described two the second iron yoke clamping plate clamp two relative surfaces of described the second iron yoke.
8. the composite construction of transformer as claimed in claim 7 and reactor, it is characterized in that, described the second iron yoke has the second through hole, and described the second through hole runs through two relative surfaces of described the second iron yoke, and described the second iron yoke connecting rod is placed in described the second through hole.
9. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, also comprises: two three-iron yoke clamping plate and three-iron yoke connecting rod;
Described two three-iron yoke clamping plate are bonded together by described three-iron yoke connecting rod, and described two three-iron yoke clamping plate clamp two relative surfaces of described three-iron yoke.
10. the composite construction of transformer as claimed in claim 9 and reactor, is characterized in that, also comprises: supporter; A surface engagement of described two three-iron yoke clamping plate and described supporter.
11. the composite construction of transformer as claimed in claim 9 and reactor, it is characterized in that, described three-iron yoke has third through-hole, and described third through-hole runs through two relative surfaces of described three-iron yoke, and described three-iron yoke connecting rod is placed in described third through-hole.
12. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, also comprises:
Two the first iron yoke clamping plate and the first iron yoke connecting rod, described two the first iron yoke clamping plate are bonded together by described the first iron yoke connecting rod, described two the first iron yoke clamping plate clamp two trapezoidal sides of described the first iron yoke, have the head rod fixture on described the first iron yoke clamping plate, described head rod fixture has the first through hole;
Two the second iron yoke clamping plate and the second iron yoke connecting rod, described two the second iron yoke clamping plate are bonded together by described the second iron yoke connecting rod, described two the second iron yoke clamping plate clamp two relative surfaces of described the second iron yoke, have the second connecting rod fixture on described the second iron yoke clamping plate, described the second connecting rod fixture has the second through hole and the 3rd through hole;
Two three-iron yoke clamping plate and three-iron yoke connecting rod, described two three-iron yoke clamping plate are bonded together by described three-iron yoke connecting rod, described two three-iron yoke clamping plate clamp two relative surfaces of described three-iron yoke, have the 3rd connecting rod fixture on described three-iron yoke clamping plate, described the 3rd connecting rod fixture has the 4th through hole;
The first core limb connecting rod and the second core limb connecting rod, described the first core limb connecting rod is placed in the first through hole and the second through hole, and described the second core limb connecting rod is placed in the 3rd through hole and the 4th through hole.
13. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, described the second iron yoke and three-iron yoke be the surface engagement relative with two of described the second core limb respectively.
14. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, the surface engagement that is positioned at the same side of described the second iron yoke, three-iron yoke and the second core limb becomes a surface.
15. the composite construction of transformer as claimed in claim 1 and reactor, is characterized in that, described transformer device structure adopts the 90 direct crack structures of degree or 45 degree mitre structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312821XU CN203288397U (en) | 2013-05-31 | 2013-05-31 | Composite structure of transformer and reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312821XU CN203288397U (en) | 2013-05-31 | 2013-05-31 | Composite structure of transformer and reactor |
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| CN203288397U true CN203288397U (en) | 2013-11-13 |
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| CN201320312821XU Expired - Lifetime CN203288397U (en) | 2013-05-31 | 2013-05-31 | Composite structure of transformer and reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111081462A (en) * | 2019-12-31 | 2020-04-28 | 青岛中加特电气股份有限公司 | Variable-voltage reactance all-in-one machine |
-
2013
- 2013-05-31 CN CN201320312821XU patent/CN203288397U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111081462A (en) * | 2019-12-31 | 2020-04-28 | 青岛中加特电气股份有限公司 | Variable-voltage reactance all-in-one machine |
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Granted publication date: 20131113 |
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