CN209747320U - Special transformer for experiment of mining multi-voltage-level high-power frequency converter - Google Patents
Special transformer for experiment of mining multi-voltage-level high-power frequency converter Download PDFInfo
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- CN209747320U CN209747320U CN201920876576.2U CN201920876576U CN209747320U CN 209747320 U CN209747320 U CN 209747320U CN 201920876576 U CN201920876576 U CN 201920876576U CN 209747320 U CN209747320 U CN 209747320U
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Abstract
The utility model provides a special transformer of high-power converter experiment of mining multivoltage level, includes the transformer main part of three-phase three-column type, its characterized in that, the transformer main part includes A, B, C three coils, wherein B looks coil one side fixed mounting low pressure tapping board (2), installs high-voltage wiring board (3) between A and B two coil opposite sides, fixed connection high voltage lead cable (4) on high-voltage wiring board (3). The device realizes the conversion of the output voltage of 3300V and 1140V by adjusting the position of the connecting sheet. Therefore, the output of two voltages can be realized through one transformer, and compared with the output of different voltages through two different transformers, the device can achieve the purposes of reducing cost, saving space and being convenient to maintain.
Description
Technical Field
The utility model belongs to the transformer field, specifically speaking are high-power converter experiment special transformer of mining multi-voltage level.
Background
After the mining frequency converter is produced and assembled, delivery test items such as light load, overload protection, constant torque characteristic, frequency resolution and the like must be carried out on the mining frequency converter, a double-drag feedback loading system is adopted, and a transformer with the same voltage grade is needed to supply power for a four-quadrant loading frequency converter power supply and a tested frequency converter power supply. At present, the mining frequency converter has two voltage levels of 1140V and 3300V. If an independent transformer is used, two sets of transformers are needed for each voltage class, and four sets of transformers need to be equipped when a company produces 1140V frequency converters and 3300V frequency converters, so that the problems of large occupied area and difficult maintenance are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a special transformer of high-power converter experiment of mining multivoltage level for solve the defect among the prior art.
The utility model discloses a following technical scheme realizes:
A special transformer for a mining multi-voltage-level high-power frequency converter experiment comprises a three-phase three-column type transformer main body and is characterized in that the transformer main body comprises A, B, C three coils, wherein a low-voltage tapping plate is fixedly installed on one side of a phase B coil, a high-voltage wiring plate is installed between the other sides of the phase A coil and the phase B coil, a high-voltage lead cable is fixedly connected onto the high-voltage wiring plate, X, Y, Z three groups of wiring terminals are fixedly installed on the low-voltage tapping plate, the phase A coil is connected with an X group wiring terminal circuit, the phase B coil is connected with a Y group wiring terminal circuit, and the phase C coil is connected with a Z group.
According to the special transformer for the experiment of the mining multi-voltage-level high-power frequency converter, different binding posts in X, Y, Z three groups of binding post groups are electrically connected with A, B, C three groups of coils at different positions.
The main body of the transformer consists of a three-phase three-column iron core, an upper pair of C-shaped clamping pieces, a lower pair of C-shaped clamping pieces, A, B, C three groups of coils, a screw rod, a pad foot, a bolt and an insulating cushion block, wherein the iron core is clamped between the two opposite clamping pieces, the two opposite clamping pieces at the same level are movably connected through the screw rod, the pad foot is fixedly installed on the bottom surface of the clamping piece below, the A, B, C three-phase coils are respectively sleeved on the corresponding iron core columns of the iron core, the insulating cushion blocks are fixedly installed on the top surface and the bottom surface of the A, B, C three-phase coil, the bottom surface of the insulating cushion block below is in contact fit with the top surface of the clamping piece below, the bolt is movably installed on the clamping piece above, and the lower end.
according to the special transformer for the experiment of the mining multi-voltage-level high-power frequency converter, the connecting rods are fixedly installed at the middle positions of the top surface of the upper clamping piece and the bottom surface of the lower clamping piece, and the two connecting rods are fixedly connected through the pull belt.
According to the special transformer for the experiment of the mining multi-voltage-level high-power frequency converter, the iron core is composed of high-permeability oriented silicon steel sheets.
According to the special transformer for the experiment of the mining multi-voltage-level high-power frequency converter, the specific connection mode of the high-voltage wiring board on the transformer main body is as follows: two first connecting rods are fixedly arranged on the back face of one side of the upper clamping piece, the two first connecting rods are both positioned between A, B two-phase coils, the rear ends of the first connecting rods are positioned behind corresponding A, B coils, and the rear faces of the two first connecting rods are fixedly connected through a high-voltage wiring board.
According to the special transformer for the experiment of the mining multi-voltage-level high-power frequency converter, the high-voltage wiring board is fixedly connected with the first connecting rod through the bolt.
The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter comprises a bolt and a bolt, wherein the bolt comprises: a butterfly bolt.
According to the special transformer for the experiment of the mining multi-voltage-level high-power frequency converter, the low-voltage tapping board is fixedly connected in a manner that a pair of second connecting rods are symmetrically arranged on the side surfaces of two clamping pieces on the same vertical line, the second connecting rods are positioned on the outer side of the B-phase coil, and the second connecting rods are fixedly connected through the low-voltage tapping board.
The utility model has the advantages that: the transformer connection mode in the device is as follows: yy0Y0, 10000V +/-15% is led out from the high-voltage side, the star connection (Y) is realized, and the rated current is 57.74A; the low-voltage coil I is in a star connection (y), when x1\ y1\ z1 is connected, a terminal a1\ b1\ c1 outputs 3300V, the rated current is 349.9A, when x (1) \ y (1) \ z (1) is connected, a terminal a1\ b1\ c1 outputs 1140V, the rated current is 506.4A, the low-voltage coil II is in a star connection (y), when x2\ y2\ z2 is connected, a terminal a2\ b2\ c2 outputs 3300V, the rated current is 349.9A, when x (2) \\ y (2) \\ z (2) is connected, a terminal a2\ b2\ c2 outputs 1140V, the rated current 506.4A is connected, so that x1 y1 y1 is connected, and the I is connected with the low-voltage No. (1 \\\ \ z 1\ z (1); when x2\ y2\ z2 is connected, the No. II low-voltage output is 3300V, and when x (2) \ y (2) \ z (2) is connected, the No. II low-voltage output is 1140V, so that the conversion of 3300V and 1140V output voltages is realized by adjusting the position of a connecting sheet. Therefore, the output of two voltages can be realized through one transformer, and compared with the output of different voltages through two different transformers, the device can achieve the purposes of reducing cost, saving space and being convenient to maintain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of the present invention; FIG. 2 is a side view of FIG. 1; FIG. 3 is a top view of FIG. 1; FIG. 4 is an assembly schematic of the low pressure distribution plate; fig. 5 is a control schematic diagram of the present invention.
Shown in the figure:
1. Lead wire copper bar, 2, low voltage tapping board, 3, high voltage wiring board, 4, lead wire cable, 5, second connecting rod 6, iron core, 7, folder, 8, screw rod, 9, pad foot, 10, bolt, 11, insulating cushion block, 12, first connecting rod, 13, connecting rod, 14, stretching strap.
Detailed Description
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a special transformer of mining multi-voltage level high-power converter experiment, including three-phase three-column type transformer main part, its characterized in that, the transformer main part includes A, B, C three coils, wherein B looks coil one side fixed mounting low pressure tapping board 2, install high-pressure wiring board 3 between A and B two coils opposite sides, fixed connection high pressure lead cable 4 on the high-pressure wiring board 3, fixed mounting X, Y, Z three groups terminal on the low pressure tapping board 2, A looks coil and X group terminal circuit connection, B looks coil and Y group terminal circuit connection, C looks coil and Z group terminal circuit connection. The transformer connection mode in the device is as follows: yy0Y0, 10000V +/-15% is led out from the high-voltage side, the star connection (Y) is realized, and the rated current is 57.74A; the low-voltage coil I is in a star connection (y), when x1\ y1\ z1 is connected, a terminal a1\ b1\ c1 outputs 3300V, the rated current is 349.9A, when x (1) \ y (1) \ z (1) is connected, a terminal a1\ b1\ c1 outputs 1140V, the rated current is 506.4A, the low-voltage coil II is in a star connection (y), when x2\ y2\ z2 is connected, a terminal a2\ b2\ c2 outputs 3300V, the rated current is 349.9A, when x (2) \\ y (2) \\ z (2) is connected, a terminal a2\ b2\ c2 outputs 1140V, the rated current 506.4A is connected, so that x1 y1 y1 is connected, and the I is connected with the low-voltage No. (1 \\\ \ z 1\ z (1); when x2\ y2\ z2 is connected, the No. II low-voltage output is 3300V, and when x (2) \ y (2) \ z (2) is connected, the No. II low-voltage output is 1140V, so that the conversion of 3300V and 1140V output voltages is realized by adjusting the position of a connecting sheet. Therefore, the output of two voltages can be realized through one transformer, and compared with the output of different voltages through two different transformers, the device can achieve the purposes of reducing cost, saving space and being convenient to maintain.
Specifically, as shown in fig. 1. In this embodiment, different terminals in the X, Y, Z three sets of terminal sets are electrically connected with corresponding A, B, C three sets of coils at different positions, so that different connection modes can output different voltages.
Specifically, as shown in fig. 1. The clamp 7 described in this embodiment can move in the opposite direction along with the rotation of the screw 8, thereby playing a role of fastening the iron core 6, because the bolt 10 is movably mounted on the clamp 7 above, the bolt 10 is rotated, the bolt 10 moves downward while rotating, and further extrudes the insulating cushion block 11, thereby the insulating cushion block 11 generates a downward force, because the foot pad 10 is in contact fit with the ground, the clamp 7 below is fixedly connected with the foot pad 9, and the insulating cushion block 11 below is fixedly connected with the corresponding clamp 7, therefore, under the interaction of the force, the two insulating cushion blocks 11 can tightly clamp the corresponding A, B, C three-phase coil, thereby playing a role of fastening the A, B, C three-phase coil, and the foot pad 9 can effectively prevent the coil from contacting with the ground.
Furthermore, the clamping force in the middle of the clamping piece 7 is consistent with the clamping force at the two ends. The draw tape 14 described in this embodiment can receive the clamping force from the middle of the clamping member 7, so that the clamping force in the middle of the clamping member 7 is consistent with the clamping force at the two ends, and further the iron core 6 receives the balanced clamping force, thereby ensuring the balance of the iron core 6.
Further, to further reduce the occupied area of the iron core 6. Compared with the common silicon steel sheet, the high-permeability oriented silicon steel sheet has stronger permeability and can generate larger magnetic induction intensity, and then uses less silicon steel sheets under certain magnetic induction intensity, thereby reducing the area occupied by the iron core 6.
Further, to prevent the low voltage tap plate 2 from contacting the A, B coil. In the embodiment, since the rear end of the first link 12 is located behind the A, B coil and the high voltage terminal board 2 is located behind the corresponding first link 12, a certain distance exists between the high voltage terminal board 2 and the A, B coil, thereby ensuring that the high voltage terminal board 2 and the A, B coil are not contacted.
Furthermore, the low-voltage tapping plate 2 is convenient to disassemble. This embodiment all make through bolt fixed connection between low pressure tapping plate 2 and the second connecting rod 5 can realize the dismantlement to low pressure tapping plate 2 through rotatory bolt, and then make things convenient for the change of low pressure tapping plate 2.
Further, to facilitate rotation of the bolt 10. The bolt 10 according to the present embodiment includes: the butterfly bolt enables the bolt 10 to rotate more conveniently and quickly.
Further, the high-voltage wiring board 3 is prevented from contacting the phase B coil. In the embodiment, since the first connecting rod 12 is located outside the B-phase coil and the high-voltage wiring board 3 is located on the first connecting rod 12, the high-voltage wiring board 3 can be effectively prevented from contacting the B-phase coil.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a special transformer of mining multi-voltage level high-power converter experiment, transformer main part including three-phase three-column type, a serial communication port, transformer main part includes A, B, C three coil, wherein B looks coil one side fixed mounting low pressure tapping board (2), install high-pressure wiring board (3) between A and B two coil opposite sides, fixed connection high-pressure lead cable (4) on high-pressure wiring board (3), fixed mounting X, Y, Z three groups of terminals on low pressure tapping board (2), A looks coil and X group terminal circuit connection, B looks coil and Y group terminal circuit connection, C looks coil and Z group terminal circuit connection.
2. The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter according to claim 1, characterized in that: x, Y, Z different terminals in the three sets of terminals are electrically connected to corresponding A, B, C different positions of the three sets of coils.
3. The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter according to claim 1, characterized in that: the transformer main body consists of a three-phase three-column iron core (6), an upper pair of C-shaped clamping pieces (7), a lower pair of C-shaped clamping pieces (7), A, B, C three groups of coils, a screw rod (8), a pad foot (9), a bolt (10) and an insulating pad block (11), wherein, iron core (6) are sandwiched between two opposite folder pieces (7), pass through screw rod (8) swing joint between two folder pieces (7) that same level is relative, bottom surface fixed mounting pad foot (9) of below folder piece (7), A, B, C three-phase coil suit respectively on the corresponding iron core post of iron core (6), A, B, C three-phase coil's top surface and bottom surface all fixed mounting insulating pad (11), the bottom surface of insulating pad (11) of below and the top surface contact cooperation of below folder piece (7), movable mounting has bolt (10) on folder piece (7) of top, the lower extreme of bolt (10) respectively with corresponding insulating pad piece (11) contact cooperation.
4. The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter according to claim 3, characterized in that: the middle positions of the top surface of the upper clamping piece (7) and the bottom surface of the lower clamping piece (7) are fixedly provided with a connecting rod (13), and the two connecting rods (13) are fixedly connected through a pull belt (14).
5. The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter according to claim 3, characterized in that: the iron core (6) is composed of high-permeability oriented silicon steel sheets.
6. The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter according to claim 1 or 3, characterized in that: two first connecting rods (12) are fixedly arranged on the back face of one side of the upper clamping piece (7), the two first connecting rods (12) are both positioned between A, B two-phase coils, the rear ends of the first connecting rods (12) are positioned behind corresponding A, B coils, and the backs of the two first connecting rods (12) are fixedly connected through a high-voltage wiring board (3).
7. The special transformer for the experiment of the mining multi-voltage-level high-power frequency converter according to claim 6, characterized in that: the high-voltage wiring board (3) and the first connecting rod (12) are fixedly connected through bolts.
8. The special transformer for the experiment of the mining multi-voltage-class high-power frequency converter according to claim 3, wherein the bolt (10) comprises: a butterfly bolt.
9. The special transformer for the mine multi-voltage-class high-power frequency converter experiment according to claim 1 or 3, wherein the low-voltage tapping plate (2) is fixedly connected in a manner that a pair of second connecting rods (5) are symmetrically arranged on the side surfaces of two clamping pieces (7) on the same vertical line, the second connecting rods (5) are positioned on the outer side of a phase B coil, and the second connecting rods (5) are fixedly connected through the low-voltage tapping plate (2).
10. The special transformer for the mine multi-voltage-class high-power frequency converter experiment according to claim 9, wherein the low-voltage tapping plate (2) is fixedly connected with the second connecting rod (5) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876576.2U CN209747320U (en) | 2019-06-12 | 2019-06-12 | Special transformer for experiment of mining multi-voltage-level high-power frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876576.2U CN209747320U (en) | 2019-06-12 | 2019-06-12 | Special transformer for experiment of mining multi-voltage-level high-power frequency converter |
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| Publication Number | Publication Date |
|---|---|
| CN209747320U true CN209747320U (en) | 2019-12-06 |
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| CN201920876576.2U Active CN209747320U (en) | 2019-06-12 | 2019-06-12 | Special transformer for experiment of mining multi-voltage-level high-power frequency converter |
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| CN (1) | CN209747320U (en) |
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- 2019-06-12 CN CN201920876576.2U patent/CN209747320U/en active Active
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