CN219811389U - New energy amorphous transformer - Google Patents
New energy amorphous transformer Download PDFInfo
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- CN219811389U CN219811389U CN202321067410.9U CN202321067410U CN219811389U CN 219811389 U CN219811389 U CN 219811389U CN 202321067410 U CN202321067410 U CN 202321067410U CN 219811389 U CN219811389 U CN 219811389U
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- iron core
- iron
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 28
- 238000004804 winding Methods 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 20
- 230000017525 heat dissipation Effects 0.000 claims abstract description 12
- 241000264877 Hippospongia communis Species 0.000 claims abstract description 10
- 239000011241 protective layer Substances 0.000 claims abstract description 10
- 150000002505 iron Chemical class 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 229910000976 Electrical steel Inorganic materials 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007652 sheet-forming process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The utility model relates to a new energy amorphous transformer, which comprises an iron core, a coil frame arranged in the iron core and a winding wound on the coil frame, wherein the iron core is formed by bending and lap-winding a plurality of laminated iron-based amorphous alloy thin strips, the surface of the iron-based amorphous alloy thin strips is provided with a plurality of laser irradiation lines which are uniformly distributed along the length direction and transversely extend, and the laser irradiation lines are uneven; the voltage line of the winding comprises a wire layer, and an insulating protective layer and an external protective layer which are sequentially coated on the wire layer from inside to outside; the honeycomb type heat dissipation layer is arranged between the insulating protection layer and the external protection layer, adjacent honeycombs are communicated, and the outer honeycombs are simultaneously communicated with the heat dissipation holes of the external protection layer. The no-load loss of the new energy amorphous transformer is greatly reduced, and the safety and reliability of the new energy amorphous transformer are improved.
Description
Technical Field
The utility model belongs to the field of hydrogeologic parameter measurement, and particularly relates to a device for measuring the flow velocity and flow direction of groundwater with a small flow velocity.
Background
Power transformers are widely used in power technology and in power electronics. The power transformer in the prior art comprises a coil frame, an iron core and windings, wherein the iron core is composed of a plurality of silicon steel sheets with the thickness of 0.22mm, and the power transformer with the structure has larger current and higher power consumption when in no-load; and because temperature is an important factor affecting the reliability of the power transformer, the reliability of using the power transformer is low and even the power transformer burns out when the temperature is too high.
The prior transformer iron core is mostly high-quality cold-rolled oriented silicon steel sheet with the brand: 30Q140, 30Q130, 30Q120, 27ZH110, 27ZH100, etc., the 30Q 120-grade core is taken as an example, and the meaning is: the thickness of the silicon steel sheet is 0.3mm, and the unit no-load loss value of the magnetic density is 1.2W/kg below 1.7T at the frequency of 50 HZ. The iron core is of a three-column lamination (also called as three-seam lamination) structure, and the core columns are not bound. Further, the core is usually three-phase three-limb, and the lamination coefficient is usually 0.95-0.97. The specific gravity of the iron core is 7.85 g/[ 3 ]. The core sheet is in the shape of a 45 degree full oblique seam (without a table). The iron core sheet forming process is to be subjected to the processes of longitudinal shearing, transverse shearing, punching and the like. The iron core is clamped by adopting section bars such as channel steel and the like to be matched with the screw rod.
The existing transformer core structure has the defects of different widths of core sheets, more stages, more shearing procedures of core sheet forming, more trouble, more lamination, high precision of processing requirements and long time for manufacturing the core. In the product performance, the iron core sheet is formed by longitudinal shearing and transverse shearing, 45-degree inclined joint lap joint is adopted during stacking, burrs exist at the end parts of the iron core sheet, gaps exist at joints, partial flux density lines are blocked from passing, and no-load loss value, no-load current value and noise level value of the iron core are increased. If the transformer manufactured by the iron core encounters stronger overcurrent or overvoltage impact, after the iron core is scattered, the iron core is easy to be grounded at multiple points, the iron core is heated, no-load loss and no-load current value are obviously increased, and equipment faults are formed.
In the field of new energy power generation, the adopted transformer is mainly a silicon steel copper coil box-type transformer, is wind power and photovoltaic, is one of core equipment in a power generation system, and is configured in a large quantity. The box-type transformer itself needs to apply voltage and current, and meanwhile, energy consumption is generated and part of electric energy is lost; the electric energy loss of the transformer is mainly no-load loss and load loss, wherein the no-load loss is mainly generated by exciting an iron core, namely the iron loss is only required to be always existing after the transformer is excited, and the load loss is mainly generated by self-heating after the coil conductor flows current, namely the copper loss. At present, a box-type transformer used for new energy sources mainly uses an iron core made of silicon steel sheets and a coil made of copper conductors, so that the problems of high no-load loss, high product price and the like can be caused, and the problems are that:
high no-load loss of transformer
The transformer has high no-load loss due to high unit iron loss of the silicon steel sheet, and the new energy box runs under the condition of low load rate and even no load, especially in the wind power and photovoltaic fields, the annual load rate of the actual box is only about 25 percent due to the influence of unstable wind and light resources, and the transformer is in an no-load state at night, so that the iron loss of the transformer is relatively increased in the loss proportion of the transformer, and therefore, the no-load loss of the transformer consumes a large amount of electric energy during actual use, and the running cost is increased.
The product cost is high, and the raw materials are controlled by foreign markets
At present, copper is mostly adopted as a conductive material for the new energy box-type transformer coil, and the copper has good conductive performance, but has high density, heavy weight and high price. The density of copper is about 3.3 times of that of aluminum, and the unit price is 3-4 times of that of aluminum at present, so that the cost of copper used as a conductive material in the new energy box transformer substation is far higher than that of an aluminum conductor material; in addition, china is an import country of copper materials, copper depends on import in a large amount, the price of copper is also controlled by foreign markets, and development of the transformer industry in China is affected.
At present, a novel magnetic conduction material amorphous alloy is widely focused, the amorphous alloy is solidified by super quenching, atoms come out and are not orderly arranged to crystallize when the alloy is solidified, the obtained solid alloy is of a long-range disordered structure, molecules (or atoms and ions) of substances composing the solid alloy do not have space regular periodicity, crystal grains and crystal boundaries of crystalline alloy do not exist, and compared with an oriented silicon steel sheet, the thickness of a strip of the iron-based amorphous alloy is only 0.026mm, which is one tenth of that of the silicon steel sheet (0.18-0.3 mm), and the solid alloy has unique properties of high saturation magnetic induction intensity (1.54T), low unit loss, high magnetic permeability, high resistivity and the like. As a novel flux guiding material, amorphous alloy is used as a transformer iron core, so that no-load loss of the transformer can be greatly reduced. However, the bandwidth of the amorphous alloy cannot be customized arbitrarily, so that the iron core is generally rolled in a plane opening mode, the opening cannot be completely closed, a large seam exists between sheets, and the iron core can generate relatively large noise at the seam after being excited, so that the performance of the transformer and user experience are affected. The amorphous alloy strip is thinner, the annealed strip is brittle, a large amount of fragments can be generated after the strip is opened and closed when the transformer is assembled, and the fragments can influence the insulating property of the transformer and influence the use of the transformer.
Disclosure of Invention
The utility model aims to reduce the no-load loss of the existing new energy amorphous transformer and improve the safety and reliability of the existing new energy amorphous transformer.
The utility model provides a new energy amorphous transformer, which comprises an iron core, a coil rack arranged in the iron core and a winding wound on the coil rack, and is characterized in that the iron core is formed by bending and overlapping a plurality of laminated iron-based amorphous alloy thin strips, the surfaces of the iron-based amorphous alloy thin strips are provided with a plurality of laser irradiation lines which are uniformly distributed along the length direction and transversely extend, and the laser irradiation lines are uneven;
the voltage line of the winding comprises an electric wire layer, and an insulating protective layer and an external protective layer which are sequentially wrapped on the electric wire layer from inside to outside; the honeycomb-shaped heat dissipation layer is arranged between the insulating protection layer and the external protection layer, adjacent honeycombs are communicated, and the outer honeycombs are simultaneously communicated with the heat dissipation holes of the external protection layer.
A temperature protection module is arranged between the winding and the iron core, and the temperature protection module is connected in series in a circuit including the new energy amorphous transformer.
The surface of the iron-based amorphous alloy ribbon is provided with an insulating film.
The iron core is a three-phase five-column iron core, the iron core crosslinked with one winding at the outer side is an electromagnetic steel plate iron core, and the iron core crosslinked with the two windings at the center is an amorphous alloy thin strip iron core.
The iron-based amorphous alloy ribbons on the outer peripheral side are overlapped and bonded, and the iron-based amorphous alloy ribbons on the inner peripheral side are bonded by a stepped seam.
The utility model has the advantages that: the no-load loss of the new energy amorphous transformer is greatly reduced, and the safety and reliability of the new energy amorphous transformer are improved.
Drawings
Fig. 1 is a schematic diagram of a new energy amorphous transformer.
Fig. 2 is a schematic view of laser irradiation line marks on the surface of the iron-based amorphous alloy ribbon.
Fig. 3 is a schematic view of a laser irradiation line mark.
Fig. 4 is another laser shot trace schematic.
Fig. 5 is a schematic diagram of a heat dissipation layer structure of a winding voltage line.
Reference numerals illustrate:
1. an iron core; 2. a coil former; 3. a winding; 5. irradiating a line mark with laser; 6. an insulating protective layer; 7. an outer protective layer; 8. a honeycomb heat dissipation layer; 9. a temperature protection module; 10. a wire layer; 11. and the heat dissipation holes.
Detailed Description
In order to reduce no-load loss of the existing new energy amorphous transformer, the embodiment provides the new energy amorphous transformer shown in fig. 1, which comprises an iron core 1, a coil frame 2 arranged in the iron core 1 and a winding 3 wound on the coil frame 2, wherein the iron core 1 is formed by bending and lapping a plurality of laminated iron-based amorphous alloy thin strips, the surfaces of the iron-based amorphous alloy thin strips are provided with a plurality of laser irradiation lines 5 which are uniformly distributed along the length direction and transversely extend, the laser irradiation lines 5 are uneven, the height difference in the thickness direction is not more than 1.6 mu m, and the distance between adjacent laser irradiation lines is more than 4 mm; the iron-based amorphous alloy ribbon can effectively reduce and inhibit the increase of exciting power, thereby effectively reducing iron loss, i.e. no-load loss. Among them, the continuous line-shaped laser irradiation mark may be a laser irradiation mark formed by laser processing using a CW (continuous wave) oscillation system, or may be a dot-shaped laser irradiation mark of a pulse laser, and among them, the laser irradiation mark formed by laser processing using a CW (continuous wave) oscillation system is preferable, and the production cost can be effectively reduced, and since the CW (continuous wave) oscillation system can easily improve the productivity by simply continuously oscillating the laser, only by increasing the output of the oscillator.
In order to achieve reduction of no-load loss, the surface of the iron-based amorphous alloy ribbon provided by the embodiment is provided with the insulating film, so that increase of eddy current loss can be restrained, and no-load loss of the transformer is reduced. Meanwhile, the iron core is a three-phase five-column coiled iron core, the coiled iron core which is in linkage with one winding at the outer side is an electromagnetic steel plate iron core, and the coiled iron core which is in linkage with the two windings is an amorphous alloy thin strip iron core, so that no-load loss is further reduced, and meanwhile, the transformer structure is more compact.
In order to avoid excitation loss caused by the joint of the laminated iron-based amorphous alloy thin strips, noise at the joint is reduced, in this embodiment, the iron-based amorphous alloy thin strips on the outer periphery side of the iron core are further overlapped and combined, the iron-based amorphous alloy thin strips on the inner periphery side are connected by a stepped joint, meanwhile, the proportion of the iron core with the overlapped structure arranged on the inner periphery side is set to be 45-56%, and the coiled iron core made of amorphous materials is used, so that no-load loss can be further reduced, and particularly, noise at the joint is avoided.
Meanwhile, in order to improve the safety and reliability of the new energy amorphous transformer, a temperature protection module 9 shown in fig. 1 is arranged between the winding 3 and the iron core 1, and the temperature protection module 9 is connected in series in a circuit of the new energy amorphous transformer, when the temperature protection module detects that the temperature of the transformer is too high, the circuit is automatically disconnected, the transformer can be better protected, and the operation safety and reliability of the transformer are ensured.
Based on the reason of the foregoing embodiment, the winding 4 provided by the present embodiment includes the voltage line shown in fig. 5 including the wire layer and the insulating protective layer 6 and the outer protective layer 7 sequentially wrapped around the wire layer 10 from inside to outside; the honeycomb-shaped heat dissipation layer 8 is arranged between the insulating protection layer 6 and the outer protection layer 7, adjacent honeycombs are communicated, and the outer honeycombs are simultaneously communicated with the heat dissipation holes 11 on the outer protection layer 7, so that timely heat dissipation is realized.
Claims (5)
1. The utility model provides a new forms of energy amorphous transformer, includes iron core (1), sets up coil former (2) and winding (3) on coil former (2) in iron core (1), its characterized in that: the iron core (1) is formed by bending and winding a plurality of laminated iron-based amorphous alloy thin strips, the surface of the iron-based amorphous alloy thin strips is provided with a plurality of laser irradiation lines (5) which are uniformly distributed along the length direction and transversely extend, and the laser irradiation lines (5) are uneven;
the voltage line of the winding (3) comprises a wire layer, and an insulating protective layer (6) and an external protective layer (7) which are sequentially wrapped on the wire layer from inside to outside; a honeycomb-shaped heat dissipation layer (8) is arranged between the insulating protection layer (6) and the external protection layer (7), adjacent honeycombs are communicated, and an outer-layer honeycomb is simultaneously communicated with heat dissipation holes on the external protection layer (7).
2. The new energy amorphous transformer according to claim 1, wherein: a temperature protection module (9) is arranged between the winding (3) and the iron core (1), and the temperature protection module (9) is connected in series in a circuit including the new energy amorphous transformer.
3. The new energy amorphous transformer according to claim 1 or 2, characterized in that: the surface of the iron-based amorphous alloy thin strip is provided with an insulating film.
4. A new energy amorphous transformer according to claim 3, characterized in that: the iron core is a three-phase five-column iron core, the iron core crosslinked with one winding at the outer side is an electromagnetic steel plate iron core, and the iron core crosslinked with two windings at the center is an amorphous alloy thin strip iron core.
5. A new energy amorphous transformer according to claim 3, characterized in that: the iron-based amorphous alloy ribbons on the outer peripheral side are overlapped and bonded, and the iron-based amorphous alloy ribbons on the inner peripheral side are bonded by a stepped seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321067410.9U CN219811389U (en) | 2023-05-06 | 2023-05-06 | New energy amorphous transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321067410.9U CN219811389U (en) | 2023-05-06 | 2023-05-06 | New energy amorphous transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219811389U true CN219811389U (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321067410.9U Active CN219811389U (en) | 2023-05-06 | 2023-05-06 | New energy amorphous transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219811389U (en) |
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2023
- 2023-05-06 CN CN202321067410.9U patent/CN219811389U/en active Active
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