CN212907361U - Dry-type transformer with unequal heights of high-voltage coil and low-voltage coil - Google Patents
Dry-type transformer with unequal heights of high-voltage coil and low-voltage coil Download PDFInfo
- Publication number
- CN212907361U CN212907361U CN202022102085.8U CN202022102085U CN212907361U CN 212907361 U CN212907361 U CN 212907361U CN 202022102085 U CN202022102085 U CN 202022102085U CN 212907361 U CN212907361 U CN 212907361U
- Authority
- CN
- China
- Prior art keywords
- voltage coil
- low
- cushion block
- voltage
- pressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to a dry-type transformer with unequal heights of high and low voltage coils, which comprises a high voltage coil, a low voltage coil, an upper pressure nail cushion block and a lower pressure nail cushion block, wherein the height of the low voltage coil is greater than that of the high voltage coil, and the upper end of the low voltage coil is arranged above the upper end of the high voltage coil; the lower end of the low-voltage coil is below the lower end of the high-voltage coil; the upper pressing nail cushion block comprises a contact surface M for pressing the upper end of the low-voltage coil and a contact surface N for pressing the upper end of the high-voltage coil; the lower pressing nail cushion block comprises a contact surface P which is pressed against the lower end of the low-voltage coil and a contact surface Q which is pressed against the lower end of the high-voltage coil. Compared with the traditional dry-type transformer, the technical scheme omits a PET (polyethylene terephthalate) coaming, saves the material cost and the assembly cost, but does not reduce the insulation performance of the end part, increases the creepage distance through the height difference between the high-voltage coil and the low-voltage coil, and ensures the insulation performance of the end part through the increase of the creepage distance; the upper and lower nail pressing pads save about 40% of material cost compared with the traditional nail pressing pads.
Description
Technical Field
The utility model relates to a transformer technical field, concretely relates to high low-voltage coil dry-type transformer that varies height.
Background
The height of a high-voltage coil and the height of a low-voltage coil of a dry type transformer with a traditional structure are generally the same, the distance from the high-voltage coil and the distance from the low-voltage coil to the iron core and the like which are grounded are also the same, as shown in the attached drawing 1, in order to enhance the insulating property of the end parts, the end parts of the high-voltage coil and the low-voltage coil are both provided with PET coamings with certain thickness, and in addition, pressing nail cushion blocks which.
The dry type transformer of the above conventional structure has the following disadvantages:
1) the insulation distances of the high-voltage coil and the low-voltage coil are equal, and insulation materials are wasted; the voltage grade requirement of the high-voltage coil is high, a large insulation distance is needed, the voltage grade requirement of the low-voltage coil is low, a small insulation distance is needed, the insulation distance of the high-voltage coil and the low-voltage coil is designed in the same way according to the maximum insulation distance in the traditional structure, and therefore the material waste rate of the pressure nail cushion block reaches about 40%;
2) the PET coaming used for enhancing the end insulation performance has high cost and leads the overall appearance of the transformer to be unattractive;
3) the assembly process is many, and workman assembly efficiency is low.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to remedy prior art's not enough, provide a high low voltage coil dry-type transformer that varies height.
To solve the technical problem, the technical scheme of the utility model is that:
a dry-type transformer with unequal heights of high and low voltage coils comprises a high voltage coil, a low voltage coil, an upper pressing nail cushion block and a lower pressing nail cushion block;
the height of the low-voltage coil is H, the height of the high-voltage coil is H, and H is more than H; the high-voltage coil and the low-voltage coil both comprise an upper end and a lower end, and the upper end of the low-voltage coil is arranged above the upper end of the high-voltage coil; the lower end of the low-voltage coil is below the lower end of the high-voltage coil;
the contact surfaces of the upper pressing nail cushion block and the high-voltage coil and the low-voltage coil are step surfaces and comprise a contact surface M for jacking the upper end of the low-voltage coil and a contact surface N for jacking the upper end of the high-voltage coil;
the contact surfaces of the lower pressing nail cushion block and the high-voltage coil and the low-voltage coil are step surfaces and comprise a contact surface P for jacking the lower end of the low-voltage coil and a contact surface Q for jacking the lower end of the high-voltage coil.
Further, H-H =30 mm.
Further, the distance between the upper end of the low-voltage coil and the upper end of the high-voltage coil is HA, the distance between the lower end of the low-voltage coil and the lower end of the high-voltage coil is HB, and HA = HB.
Further, the upper pressing nail cushion block and the lower pressing nail cushion block are completely the same.
Further, HA = HB =15 mm.
The utility model discloses the beneficial effect that can reach does:
1) compared with the traditional dry-type transformer, the PET enclosing plate is omitted, the material cost and the assembly cost are saved, but the insulating property of the end part is not reduced, the creepage distance is increased through the height difference between the high-voltage coil and the low-voltage coil, and the insulating property of the end part is ensured through the increase of the creepage distance;
2) compared with the traditional nail pressing cushion block, the upper nail pressing cushion block and the lower nail pressing cushion block save about 40% of material cost;
3) because the PET coaming is omitted, the assembly procedures are reduced, and the assembly work efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a conventional dry type transformer;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-nail pressing cushion blocks, 2-PET surrounding plates, 3-high-voltage coils, 4-traditional low-voltage coils, 5-upper nail pressing cushion blocks, 6-low-voltage coils and 7-lower nail pressing cushion blocks.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 2, a dry-type transformer with unequal heights of high and low voltage coils comprises a high voltage coil 3, a low voltage coil 6, an upper nail pressing cushion block 5 and a lower nail pressing cushion block 7;
the height of the low-voltage coil 6 is H, the height of the high-voltage coil 3 is H, and H is more than H; the high-voltage coil 3 and the low-voltage coil 6 both comprise an upper end and a lower end, and the upper end of the low-voltage coil 6 is arranged above the upper end of the high-voltage coil 3; the lower end of the low-voltage coil 6 is below the lower end of the high-voltage coil 3;
the contact surfaces of the upper pressing nail cushion block 5, the high-voltage coil 3 and the low-voltage coil 6 are step surfaces and comprise a contact surface M for jacking the upper end of the low-voltage coil 6 and a contact surface N for jacking the upper end of the high-voltage coil 3;
the contact surfaces of the lower pressing nail cushion block 7, the high-voltage coil 3 and the low-voltage coil 6 are step surfaces and comprise a contact surface P for jacking the lower end of the low-voltage coil 6 and a contact surface Q for jacking the lower end of the high-voltage coil 3.
The distance between the upper end of the low-voltage coil 6 and the upper end of the high-voltage coil 3 is HA, the distance between the lower end of the low-voltage coil 6 and the lower end of the high-voltage coil 3 is HB, and when HA = HB is obtained through design and tests of transformers of various models, the effect is best, correspondingly, the upper pressing nail cushion block 5 and the lower pressing nail cushion block 7 can be designed into completely same structures, and the upper pressing nail cushion block and the lower pressing nail cushion block are completely universal in manufacture and use, so that the upper pressing nail cushion block and the lower pressing nail cushion block have interchangeability.
For a 35KV transformer, the optimal technical parameters are H-H =30mm, HA = HB =15mm, and the cost of each transformer can be reduced by 100-300 yuan on average.
The advantages of this embodiment:
1) compared with the traditional dry-type transformer, the PET coaming 2 is omitted, the material cost and the assembly cost are saved, but the insulating property of the end part is not reduced, the creepage distance is increased through the height difference between the high-voltage coil 3 and the low-voltage coil 4, and the insulating property of the end part is ensured through the increase of the creepage distance;
2) compared with the traditional nail pressing cushion block, the upper nail pressing cushion block 5 and the lower nail pressing cushion block 7 save about 40 percent of material cost;
3) because the PET coaming 2 is omitted, the assembly process is reduced, and the assembly work efficiency is improved.
In the description of the present invention, words such as "inner", "outer", "upper", "lower", "front", "rear", etc., indicating directions or positional relationships are used only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The above is only one of the embodiments of the present invention, the protection scope of the present invention is not limited to the above-mentioned embodiments, it should be pointed out, for the ordinary skilled person in the art, without departing from the present invention, the present invention provides a plurality of improvements and decorations made under the premise of the idea.
Claims (5)
1. A dry-type transformer with unequal heights of high and low-voltage coils is characterized in that: the high-voltage coil winding device comprises a high-voltage coil (3), a low-voltage coil (6), an upper pressure nail cushion block (5) and a lower pressure nail cushion block (7);
the height of the low-voltage coil (6) is H, the height of the high-voltage coil (3) is H, and H is more than H; the high-voltage coil (3) and the low-voltage coil (6) both comprise an upper end and a lower end, and the upper end of the low-voltage coil (6) is arranged above the upper end of the high-voltage coil (3); the lower end of the low-voltage coil (6) is arranged below the lower end of the high-voltage coil (3);
the contact surfaces of the upper pressing nail cushion block (5) and the high-voltage coil (3) and the low-voltage coil (6) are step surfaces and comprise a contact surface M for jacking the upper end of the low-voltage coil (6) and a contact surface N for jacking the upper end of the high-voltage coil (3);
the contact surfaces of the lower pressing nail cushion block (7) and the high-voltage coil (3) and the low-voltage coil (6) are step surfaces and comprise a contact surface P for jacking the lower end of the low-voltage coil (6) and a contact surface Q for jacking the lower end of the high-voltage coil (3).
2. The dry-type transformer with unequal heights of high-low voltage coils as claimed in claim 1, wherein: H-H =30 mm.
3. A dry-type transformer according to claim 1 or 2, wherein the high and low voltage coils have different heights: the distance between the upper end of the low-voltage coil (6) and the upper end of the high-voltage coil (3) is HA, the distance between the lower end of the low-voltage coil (6) and the lower end of the high-voltage coil (3) is HB, and HA = HB.
4. A dry-type transformer with unequal heights of high-low voltage coils as claimed in claim 3, wherein: the upper nail pressing cushion block (5) is completely the same as the lower nail pressing cushion block (7).
5. A dry-type transformer with unequal heights of high-low voltage coils as claimed in claim 3, wherein: HA = HB =15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022102085.8U CN212907361U (en) | 2020-09-23 | 2020-09-23 | Dry-type transformer with unequal heights of high-voltage coil and low-voltage coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022102085.8U CN212907361U (en) | 2020-09-23 | 2020-09-23 | Dry-type transformer with unequal heights of high-voltage coil and low-voltage coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212907361U true CN212907361U (en) | 2021-04-06 |
Family
ID=75258498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022102085.8U Active CN212907361U (en) | 2020-09-23 | 2020-09-23 | Dry-type transformer with unequal heights of high-voltage coil and low-voltage coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212907361U (en) |
-
2020
- 2020-09-23 CN CN202022102085.8U patent/CN212907361U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204792382U (en) | Metallic glass transformer | |
| CN103489595B (en) | Three-phase three-column amorphous alloy dry device body insulation assembly structure | |
| CN212907361U (en) | Dry-type transformer with unequal heights of high-voltage coil and low-voltage coil | |
| CN102693816A (en) | Amorphous alloy iron core dry distribution transformer | |
| CN203481007U (en) | Integrated-poured coil structure of dry type transformer | |
| CN201465711U (en) | High-capacity dry-type transformer cushion block | |
| CN206471215U (en) | A kind of common mode inductance with elastic insulated plate | |
| CN2884466Y (en) | Body Structure of Single-phase Railway Traction Transformer | |
| CN205487712U (en) | Novel high -pressure reactance ware | |
| CN211265245U (en) | 35kV power transformer ware body insulation system and 35kV power transformer | |
| CN203055637U (en) | Insulation structure of end portion of transformer coil | |
| CN204577237U (en) | Indoor Large Copacity anti-fouling type dry-type voltage inductor | |
| CN201812656U (en) | Main insulating structure of dry transformer | |
| CN212032837U (en) | High-efficiency energy-saving environment-friendly special dry-type transformer for electrified railway | |
| CN203536189U (en) | Amorphous alloy dry-type transformer with pie-type high-voltage coil | |
| CN221262114U (en) | High-voltage insulation type wire outlet terminal of dry-type transformer | |
| CN203596255U (en) | Insulated assembling structure of body of three-phase three-column amorphous alloy dry-type transformer | |
| CN207441428U (en) | A kind of folding stereo open core resin casting dry-type transformer | |
| CN212365720U (en) | Transformer insulation structure with shielding ring of voltage regulating coil suitable for special environment | |
| CN205828089U (en) | 110kV and above amorphous alloy stereo roll iron core transformator | |
| CN201054294Y (en) | Frequency conversion and current rectifying transformer padding block structure for increasing climbing distance | |
| CN201503754U (en) | C-shaped iron core | |
| CN216212684U (en) | Insulation cushion block with special umbrella skirt structure for wind power generation dry-type transformer | |
| CN221008742U (en) | Winding structure of energy-saving power transformer | |
| CN209691561U (en) | A kind of oil-immersed transformer insulation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A dry-type transformer with unequal height of high and low voltage coils Effective date of registration: 20220919 Granted publication date: 20210406 Pledgee: Weihai City Commercial Bank Co.,Ltd. Heze Branch Pledgor: SHANDONG ALFADACHI ELECTRIC Co.,Ltd. Registration number: Y2022980015662 |