CN216250335U - Novel transformer on-load voltage regulation structure - Google Patents
Novel transformer on-load voltage regulation structure Download PDFInfo
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- CN216250335U CN216250335U CN202122594305.8U CN202122594305U CN216250335U CN 216250335 U CN216250335 U CN 216250335U CN 202122594305 U CN202122594305 U CN 202122594305U CN 216250335 U CN216250335 U CN 216250335U
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Abstract
The utility model relates to a novel on-load voltage regulation structure of a transformer, and belongs to the technical field of transformers. The technical scheme is as follows: the three-phase integrated on-load voltage regulating switch (2) is arranged on a top cover of a transformer oil tank (1), a high-voltage winding (4) is sleeved on an iron core column of a transformer iron core (3), a voltage regulating winding (5) is sleeved on the high-voltage winding (4), and the tail end of the high-voltage winding (4) and a branch line of the voltage regulating winding (5) are connected with the three-phase integrated on-load voltage regulating switch (2) through a paper-covered cable (6); the paper-covered cable (6) is clamped and fixed through a plurality of conductor clamps (7) arranged on a web plate of the transformer core (3); and a lead connecting part (8) is arranged on the three-phase integrated on-load voltage regulating switch (2). The utility model has the beneficial effects that: through the combination of on-load voltage regulation, not only the transformer volume has been reduced, the cost is reduced has still satisfied the customer and to the exquisite and accurate demand of voltage regulation of transformer outward appearance.
Description
Technical Field
The utility model relates to a novel on-load voltage regulation structure of a transformer, and belongs to the technical field of transformers.
Background
At present, the load voltage regulation of the traditional 35kV oil-immersed transformer with large capacity (the capacity is 63000kVA or more) mainly adopts the following structure: inside the oil tank, three single-phase on-load tap changers are arranged on the left side of the phase A side of the three phases of the transformer A, B, C and fixed on a top cover of the oil tank, the tail lead of the high-voltage winding of the three phases of the transformer A, B, C and the tapping lead of the tap winding are connected with the corresponding on-load tap changers through cables, and outside the oil tank, the three single-phase on-load tap changers are connected to a switch control box through three horizontal transmission shafts and a vertical transmission shaft which are connected in series, and automatic or manual on-load tap changing of the transformer is realized by the switch control box. The prior art has the following problems: the on-load voltage regulation structure leads the connection line of an on-load voltage regulation switch and a winding in the transformer to be messy, especially the distance between the connection line of the A, C phase switch and an oil tank is difficult to control, the oil tank expands outwards, the appearance of the transformer is irregular, and meanwhile, accidents such as clamping stagnation, falling and the like possibly occur in the voltage regulation process of three horizontal transmission shafts which are connected in series can bring about no hidden danger to the three-phase accurate voltage regulation of the transformer. With the development of the transformer industry, transformer users have higher requirements on exquisite appearance and accurate voltage regulation of the transformer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel on-load voltage regulation structure of a transformer, which not only reduces the volume of the transformer and the cost through the combination of on-load voltage regulation, but also meets the requirements of customers on exquisite appearance and accurate voltage regulation of the transformer, and solves the technical problems in the prior art.
The technical scheme of the utility model is as follows:
a novel transformer on-load voltage regulation structure comprises a transformer oil tank, a three-phase integrated on-load voltage regulation switch, a transformer iron core, a high-voltage winding, a voltage regulation winding, a paper-covered cable, a wire clamp and a lead connecting component, wherein the three-phase integrated on-load voltage regulation switch is installed on a top cover of the transformer oil tank, the high-voltage winding is sleeved on an iron core column of the transformer iron core, the voltage regulation winding is sleeved on the high-voltage winding, and the tail end of the high-voltage winding and a branch line of the voltage regulation winding are connected with the three-phase integrated on-load voltage regulation switch through the paper-covered cable; the paper-covered cable is clamped and fixed by a plurality of lead clamps arranged on a web plate of the transformer core, so that the lead is prevented from shaking under the impact of oil flow, the insulation distance from the lead to each group of components of the transformer is ensured, and the insulation distance from the paper-covered cable to each group of components of the transformer and the reliable connection between the paper-covered cable and the three-phase integrated on-load voltage regulating switch are ensured; the three-phase integrated on-load voltage regulation switch is provided with a lead connecting part, the lead connecting part consists of an upper part and a lower part which are of an integrated structure, the upper part is of a cylindrical structure with one open end, and the end parts of the paper-covered cables are inserted into the cylindrical structure and then are connected into a whole by cold pressing; the lower part of the three-phase integrated on-load voltage regulating switch is a plate-shaped structure with a wiring hole, and the plate-shaped structure with the wiring hole is fixed on a wiring terminal of the three-phase integrated on-load voltage regulating switch through a fastener; the central line of the plate-shaped structure and the axis of the cylinder structure are parallel to each other but not on the same straight line, and the three-phase integrated on-load tap changer is suitable for connection between a paper-covered cable and the three-phase integrated on-load tap changer, so that the situation that the paper-covered cable collides with the self connecting line of the three-phase integrated on-load tap changer can be effectively avoided, and meanwhile, the mechanical distance between the three-phase integrated on-load tap changer and a transformer oil tank and a tap winding can be reduced.
The wiring holes on the plate-shaped structure are two in number, and the two wiring holes can be arranged on two sides of the center line of the plate-shaped structure and can also be arranged on the center line of the plate-shaped structure.
An on-load tap changer control box is arranged beside the three-phase integrated on-load tap changer, an on-load tap changer vertical rotating shaft and an on-load tap changer horizontal rotating shaft of the on-load tap changer control box are respectively connected with the three-phase integrated on-load tap changer, and the on-load tap changer vertical rotating shaft and the on-load tap changer horizontal rotating shaft are controlled through the external on-load tap changer control box, so that A, B, C three phases can be simultaneously and accurately regulated, and the requirements of transformer users on different voltage combinations are met.
On the premise of fully ensuring the safe distance among all groups of components in the transformer, the three-phase integrated on-load tap changer is installed on a top cover of a transformer oil tank, a high-voltage winding is sleeved on an iron core column of a transformer iron core, a tap winding is sleeved on the high-voltage winding, and the tail end of the high-voltage winding and a branch connection line of the tap winding are connected with the three-phase integrated on-load tap changer through a paper-covered cable; the paper-covered cable is clamped and fixed by a plurality of lead clamps arranged on a web plate of the transformer core, so that the lead is prevented from shaking under the impact of oil flow, the insulation distance from the lead to each group of components of the transformer is ensured, and the insulation distance from the paper-covered cable to each group of components of the transformer and the reliable connection between the paper-covered cable and the three-phase integrated on-load voltage regulating switch are ensured; the three-phase integrated on-load voltage regulation switch is provided with a lead connecting part, the lead connecting part consists of an upper part and a lower part which are of an integrated structure, the upper part is of a cylindrical structure with one open end, and the end parts of the paper-covered cables are inserted into the cylindrical structure and then are connected into a whole by cold pressing; the lower part of the three-phase integrated on-load voltage regulating switch is a plate-shaped structure with a wiring hole, and the plate-shaped structure with the wiring hole is fixed on a wiring terminal of the three-phase integrated on-load voltage regulating switch through a fastener; the central line of the plate-shaped structure and the axis of the cylinder structure are parallel to each other but not on the same straight line, so that the connection between the paper-covered cable and the three-phase integrated on-load tap changer is suitable, the contact between the paper-covered cable and the self connecting line of the three-phase integrated on-load tap changer can be effectively avoided, and the mechanical distance between the three-phase integrated on-load tap changer and a transformer oil tank and a tap winding can be reduced; an on-load tap changer control box is arranged beside the three-phase integrated on-load tap changer, an on-load tap changer vertical rotating shaft and an on-load tap changer horizontal rotating shaft of the on-load tap changer control box are respectively connected with the three-phase integrated on-load tap changer, and the on-load tap changer vertical rotating shaft and the on-load tap changer horizontal rotating shaft are controlled through the external on-load tap changer control box, so that A, B, C three phases can be simultaneously and accurately regulated, and the requirements of transformer users on different voltage combinations are met.
The utility model has the beneficial effects that: through the combination of on-load voltage regulation, not only the transformer volume has been reduced, the cost is reduced has still satisfied the customer and to the exquisite and accurate demand of voltage regulation of transformer outward appearance.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a lead connecting member according to an embodiment of the present invention;
FIG. 3 is a side view of a lead attachment component in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second lead connecting member according to an embodiment of the present invention;
FIG. 5 is a side view of a second lead attachment component in accordance with an embodiment of the present invention;
in the figure: the transformer oil tank comprises a transformer oil tank 1, a three-phase integrated on-load tap changer 2, a transformer iron core 3, a high-voltage winding 4, a tap winding 5, a paper-wrapped cable 6, a wire clamp 7, a lead connecting component 8, an on-load tap changer horizontal rotating shaft 9, an on-load tap changer vertical rotating shaft 10, an on-load tap changer control box 11, a cylindrical structure 12, a plate structure 13, a plate structure central line 14, a cylindrical structure axis 15 and a vent hole 16.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings.
A novel transformer on-load voltage regulation structure comprises a transformer oil tank 1, a three-phase integrated on-load voltage regulation switch 2, a transformer iron core 3, a high-voltage winding 4, a voltage regulation winding 5, a paper-covered cable 6, a wire clamp 7 and a lead connecting component 8, wherein the three-phase integrated on-load voltage regulation switch 2 is installed on a top cover of the transformer oil tank 1, the high-voltage winding 4 is sleeved on an iron core column of the transformer iron core 3, the voltage regulation winding 5 is sleeved on the high-voltage winding 4, and the tail end of the high-voltage winding 4 and a branch line of the voltage regulation winding 5 are connected with the three-phase integrated on-load voltage regulation switch 2 through the paper-covered cable 6; the paper-covered cable 6 is clamped and fixed through a plurality of lead clamps 7 arranged on a web plate of the transformer core 3, so that the lead is prevented from shaking under the impact of oil flow, the insulation distance from the lead to each group of components of the transformer is ensured, the insulation distance from the paper-covered cable 6 to each group of components of the transformer is ensured, and the paper-covered cable 6 is reliably connected with the three-phase integrated on-load tap changer; the three-phase integrated on-load voltage regulation switch 2 is provided with a lead connecting part 8, the lead connecting part consists of an upper part and a lower part of an integrated structure, the upper part is a cylindrical structure 12 with an opening at one end, and the end parts of the paper-covered cables 6 are inserted into the cylindrical structure 12 and then are connected into a whole by cold pressing; the lower part is a plate-shaped structure 13 with a wiring hole, and the plate-shaped structure 13 with the wiring hole is fixed on a wiring terminal of the three-phase integrated on-load voltage regulating switch 2 through a fastener; the central line 14 of the plate-shaped structure and the axis 15 of the cylinder structure are parallel to each other but not on the same straight line, and the connection between the paper-covered cable 6 and the three-phase integrated on-load tap changer 2 is suitable, so that the contact between the paper-covered cable 6 and the self connecting line of the three-phase integrated on-load tap changer 2 can be effectively avoided, and the mechanical distance between the three-phase integrated on-load tap changer 2 and the transformer oil tank 1 and the tap winding 5 can be reduced.
One end of the cylindrical structure 12 is open, the bottom of the cylindrical structure is closed, and the bottom of the cylindrical structure 12 is provided with a vent hole 16.
The number of the wiring holes on the plate-shaped structure 13 is two.
Embodiment one, refer to fig. 2 and 3: the two connection openings of the plate-shaped structure 13 are arranged on the plate-shaped structure center line 14.
Example two, refer to fig. 4, 5: the two wiring holes of the plate-like structure 13 are arranged on both sides of the centre line 14 of the plate-like structure.
An on-load tap changer control box 11 is arranged beside a three-phase integrated on-load tap changer 2, an on-load tap changer vertical rotating shaft 10 and an on-load tap changer horizontal rotating shaft 9 of the on-load tap changer control box 11 are respectively connected with the three-phase integrated on-load tap changer 2, the on-load tap changer vertical rotating shaft 10 and the on-load tap changer horizontal rotating shaft 9 are controlled through the external on-load tap changer control box 11, A, B, C three phases are simultaneously and accurately regulated, and the requirements of transformer users on different voltage combinations are met.
On the premise of fully ensuring the safe distance among all groups of components in the transformer, the three-phase integrated on-load tap changer 2 is installed on a top cover of a transformer oil tank 1, a high-voltage winding 4 is sleeved on an iron core column of a transformer iron core 3, a tap winding 5 is sleeved on the high-voltage winding 4, and the tail end of the high-voltage winding 4 and a branch line of the tap winding 5 are connected with the three-phase integrated on-load tap changer 2 through a paper-coated cable 6; the paper-covered cable 6 is clamped and fixed through a plurality of lead clamps 7 arranged on a web plate of the transformer core 3, so that the lead is prevented from shaking under the impact of oil flow, the insulation distance from the lead to each group of components of the transformer is ensured, the insulation distance from the paper-covered cable 6 to each group of components of the transformer is ensured, and the paper-covered cable 6 is reliably connected with the three-phase integrated on-load tap changer; the three-phase integrated on-load voltage regulation switch 2 is provided with a lead connecting part 8, the lead connecting part consists of an upper part and a lower part which are of an integrated structure, the upper part is a cylindrical structure 12 with an opening at one end, and the end parts of the paper-covered cables 6 are inserted into the cylindrical structure 12 and then are connected into a whole by cold pressing; the lower part is a plate-shaped structure 13 with a wiring hole, and the plate-shaped structure 13 with the wiring hole is fixed on a wiring terminal of the three-phase integrated on-load voltage regulating switch 2 through a fastener; the central line 14 of the plate-shaped structure and the axis 15 of the cylinder structure are parallel to each other but not on the same straight line, and the connection between the paper-covered cable 6 and the three-phase integrated on-load tap changer 2 is suitable, so that the contact between the paper-covered cable 6 and the self connecting line of the three-phase integrated on-load tap changer 2 can be effectively avoided, and the mechanical distance between the three-phase integrated on-load tap changer 2 and the transformer oil tank 1 and the tap winding 5 can be reduced; an on-load tap changer control box 11 is arranged beside the three-phase integrated on-load tap changer 2, an on-load tap changer vertical rotating shaft 10 and an on-load tap changer horizontal rotating shaft 9 of the on-load tap changer control box 11 are respectively connected with the three-phase integrated on-load tap changer 2, the on-load tap changer vertical rotating shaft 10 and the on-load tap changer horizontal rotating shaft 9 are controlled through the external on-load tap changer control box 11 to control the three-phase integrated on-load tap changer 2, A, B, C three phases can be simultaneously and accurately regulated, and the requirements of transformer users on different voltage combinations are met.
Claims (2)
1. The utility model provides a novel transformer on-load voltage regulation structure which characterized in that: the three-phase integrated on-load tap changer comprises a transformer oil tank (1), a three-phase integrated on-load tap changer (2), a transformer iron core (3), a high-voltage winding (4), a tap winding (5), a paper-covered cable (6), a wire clamp (7) and a lead connecting component (8), wherein the three-phase integrated on-load tap changer (2) is installed on a top cover of the transformer oil tank (1), the high-voltage winding (4) is sleeved on an iron core column of the transformer iron core (3), the tap winding (5) is sleeved on the high-voltage winding (4), and the tail end of the high-voltage winding (4) and the branch line of the tap winding (5) are connected with the three-phase integrated on-load tap changer (2) through the paper-covered cable (6); the paper-covered cable (6) is clamped and fixed through a plurality of conductor clamps (7) arranged on a web plate of the transformer core (3); the three-phase integrated on-load voltage regulation switch (2) is provided with a lead connecting part (8), the lead connecting part consists of an upper part and a lower part of an integrated structure, the upper part is a cylindrical structure (12) with an opening at one end, and the end parts of the paper-covered cables (6) are inserted into the cylindrical structure (12) and then are connected into a whole by cold pressing; the lower part is a plate-shaped structure (13) with a wiring hole, and the plate-shaped structure (13) with the wiring hole is fixed on a wiring terminal of the three-phase integrated on-load tap changer (2) through a fastener; the central line (14) of the plate-shaped structure and the axis (15) of the cylinder structure are parallel to each other but not on the same straight line.
2. The novel on-load voltage regulation structure of the transformer according to claim 1, characterized in that: an on-load tap changer control box (11) is arranged beside the three-phase integrated on-load tap changer (2), and an on-load tap changer vertical rotating shaft (10) and an on-load tap changer horizontal rotating shaft (9) of the on-load tap changer control box (11) are respectively connected with the three-phase integrated on-load tap changer (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122594305.8U CN216250335U (en) | 2021-10-27 | 2021-10-27 | Novel transformer on-load voltage regulation structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122594305.8U CN216250335U (en) | 2021-10-27 | 2021-10-27 | Novel transformer on-load voltage regulation structure |
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| CN216250335U true CN216250335U (en) | 2022-04-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948292A (en) * | 2021-10-27 | 2022-01-18 | 保定保菱变压器有限公司 | Novel transformer on-load voltage regulation structure and method |
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- 2021-10-27 CN CN202122594305.8U patent/CN216250335U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948292A (en) * | 2021-10-27 | 2022-01-18 | 保定保菱变压器有限公司 | Novel transformer on-load voltage regulation structure and method |
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