CN219497527U - Cold-resistant and cracking-resistant dry type air reactor encapsulation winding structure - Google Patents
Cold-resistant and cracking-resistant dry type air reactor encapsulation winding structure Download PDFInfo
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- CN219497527U CN219497527U CN202320355156.6U CN202320355156U CN219497527U CN 219497527 U CN219497527 U CN 219497527U CN 202320355156 U CN202320355156 U CN 202320355156U CN 219497527 U CN219497527 U CN 219497527U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model relates to a cold-resistant and crack-resistant dry-type air-core reactor encapsulation winding structure, and belongs to the technical field of dry-type air-core reactors. The first glass fiber yarn is horizontally wound on the periphery of the dry type air reactor winding, the first glass fiber cloth is horizontally wound on the periphery of the first glass fiber yarn, the second glass fiber yarn is wound on the periphery of the first glass fiber cloth, the winding angle of the second glass fiber yarn is 20-25 degrees with the horizontal direction, the third glass fiber yarn is wound on the periphery of the second glass fiber yarn, the winding angle of the third glass fiber yarn is 155-160 degrees with the horizontal direction, and the fourth glass fiber yarn is horizontally wound on the periphery of the third glass fiber yarn. The air-core type electric network device has the advantages that the air-core type electric network device is novel in structure, the encapsulation insulation performance of the dry air-core type electric network device can be effectively improved, the phenomenon that micro cracks appear in the encapsulation of the dry air-core type electric network device due to temperature difference impact in alpine regions is avoided, turn-to-turn insulation failure of the electric network device is prevented, and safe and stable operation of the electric network device is ensured.
Description
Technical Field
The utility model relates to the technical field of dry type air-core reactors, in particular to an encapsulation winding structure of a dry type air-core reactor with cold resistance and cold environment and cracking resistance.
Background
Along with the rapid development of the power grid construction in China, the requirements on the reliability of power grid equipment are higher and higher. Aiming at the problems of large abnormal voltage fluctuation and excessive reactive power of the power transmission line, a reactor is required to be adopted to maintain voltage stability and compensate reactive power. Compared with the traditional oil-immersed type iron core reactor, the dry type air core reactor has the characteristics of light weight, small noise, good linearity of reactance value and easiness in installation and maintenance, and is widely applied to a transformer substation.
As the number of applications of dry air reactors increases, the occurrence of faults increases. The dry-type air-core reactor mainly comprises two parts of metal and insulating materials, and the coil insulating layer is formed by winding, wrapping, solidifying and forming glass fibers impregnated with epoxy resin. Because the insulating material of the reactor is in the combined action of high temperature and electromagnetic field for a long time, the performance and the service life can be seriously influenced, the insulating encapsulation can gradually lose the original mechanical and insulating properties and cause faults, especially in the areas with high and low temperatures, the reactor is encapsulated to bear stress in the cooling and through-flow processes, the cracking phenomenon is extremely easy to occur, the encapsulated insulation is damaged, and the safe and stable operation of a power grid is seriously influenced.
Disclosure of Invention
The utility model provides a cold-resistant and crack-resistant dry type air-core reactor encapsulation winding structure, which is used for solving the problems that in high-cold and low-temperature areas, the reactor is encapsulated and stressed in the cooling and flow-through processes, the encapsulation insulation is damaged easily, and the safe and stable operation of a power grid is seriously affected due to the cracking phenomenon, so that the reliability of the reactor insulation structure in the cooling and flow-through processes and the low-temperature operation environment is effectively ensured.
The technical scheme adopted by the utility model is as follows: the first glass fiber yarn is horizontally wound on the periphery of the dry type air reactor winding, the first glass fiber cloth is horizontally wound on the periphery of the first glass fiber yarn, the second glass fiber yarn is wound on the periphery of the first glass fiber cloth, the winding angle of the second glass fiber yarn is 20-25 degrees with the horizontal direction, the third glass fiber yarn is wound on the periphery of the second glass fiber yarn, the winding angle of the third glass fiber yarn is 155-160 degrees with the horizontal direction, and the fourth glass fiber yarn is horizontally wound on the periphery of the third glass fiber yarn.
The glass fiber yarn is pre-impregnated with an impregnating solution.
The glass fiber cloth is pre-impregnated with impregnating solution.
The second glass fiber yarn is pre-impregnated by the impregnating solution.
The glass fiber yarn is pre-impregnated by the impregnating solution.
The glass fiber yarn is pre-impregnated by the impregnating solution.
The first glass fiber yarn, the first glass fiber cloth, the second glass fiber yarn, the third glass fiber yarn and the fourth glass fiber yarn are wound and then solidified to complete encapsulation.
The beneficial effects of the utility model are as follows: the innermost layer of glass fiber filaments is in flat winding, and then one layer of glass fiber cloth, two layers of glass fiber filaments in a flower winding structure and one layer of flat winding glass fiber filaments are sequentially arranged. The glass fiber of the pattern winding structure forms 20-25 degrees and 155-160 degrees with the horizontal direction, the axial and radial performances of the encapsulation can be effectively improved, the axial stress impact strength of the encapsulation is increased, the insulation reliability of the reactor encapsulation under the condition of large temperature difference change is ensured, the cracking phenomenon is prevented, the impregnating solution is adopted for pre-impregnation, the capability of the encapsulation for resisting temperature shock is improved, the damage probability of the reactor caused by impact is reduced, the impregnating solution comprises epoxy resin and imidazole curing agent, and a toughening agent is added into the impregnating solution to improve the toughness, and the formation probability of the curing internal stress of the reactor is reduced by adopting encapsulation curing.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model, showing the structure of each winding layer in a layered cross-section;
FIG. 2 is a schematic view of the winding direction of a second glass fiber yarn according to the present utility model;
fig. 3 is a schematic view of the winding direction of the glass fiber yarn three of the present utility model.
Description of the embodiments
The method comprises the steps of horizontally winding a first glass fiber yarn 1 on the periphery of a dry type air reactor winding 6, horizontally winding a first glass fiber cloth 2 on the periphery of the first glass fiber yarn 1, winding a second glass fiber yarn 3 on the periphery of the first glass fiber cloth 2 at an angle of 20-25 DEG with the horizontal direction, winding a third glass fiber yarn 4 on the periphery of the second glass fiber yarn 3 at an angle of 155-160 DEG with the horizontal direction, and horizontally winding a fourth glass fiber yarn 5 on the periphery of the third glass fiber yarn 4;
the first glass fiber yarn 1 is pre-impregnated by impregnating solution;
the first glass fiber cloth 2 is pre-impregnated by impregnating solution;
the second glass fiber yarn 3 is pre-impregnated by impregnating solution;
the third 4 glass fiber filaments are pre-impregnated by impregnating solution;
the glass fiber yarn IV 5 is pre-impregnated by impregnating solution;
and winding the first glass fiber yarn 1, the first glass fiber cloth 2, the second glass fiber yarn 3, the third glass fiber yarn 4 and the fourth glass fiber yarn 5, and then solidifying to complete encapsulation.
The present utility model is described in further detail below.
The impregnating solution of the first glass fiber yarn 1, the first glass fiber cloth 2, the second glass fiber yarn 3, the third glass fiber yarn 4 and the fourth glass fiber yarn 5 comprises the following components: 100 parts of epoxy resin E51; 5 parts of imidazole curing agent 2-methylimidazole (2-MI) and 10 parts of toughening agent polyethylene glycol; curing the wound encapsulation, wherein the pre-curing temperature is 70 ℃, the heating time is 4 hours, and the pre-curing is 4 hours; the curing temperature is 150 ℃, the heating time is 5 hours, the curing time is 12 hours, and the temperature is reduced for 28 hours after the curing is completed.
Thermal shock test:
by adopting the measures, a reactor prototype is manufactured, and a thermal shock test is performed. The coil is maintained to be stable in temperature in a low-temperature environment of-30 ℃, then the average temperature rise of the reactor winding is enabled to reach 150K in 2 hours through current, and finally the temperature of the coil is reduced to be 25 ℃ at room temperature in 2.5 hours. The coil encapsulation bears the temperature impact of more than 200K at maximum, and the reactor is checked to find no crack after the test, and the insulation test is carried out and passed, which shows that the epoxy encapsulation and the wire inter-turn insulation of the reactor are not obviously damaged under the huge temperature difference impact.
Claims (7)
1. The utility model provides a cold-resistant anti dry-type air core reactor encapsulation coiling structure that splits which characterized in that: the first glass fiber yarn is horizontally wound on the periphery of the dry type air reactor winding, the first glass fiber cloth is horizontally wound on the periphery of the first glass fiber yarn, the second glass fiber yarn is wound on the periphery of the first glass fiber cloth, the winding angle of the second glass fiber yarn is 20-25 degrees with the horizontal direction, the third glass fiber yarn is wound on the periphery of the second glass fiber yarn, the winding angle of the third glass fiber yarn is 155-160 degrees with the horizontal direction, and the fourth glass fiber yarn is horizontally wound on the periphery of the third glass fiber yarn.
2. The cold-resistant and crack-resistant dry air reactor encapsulation and winding structure according to claim 1, wherein the cold-resistant and crack-resistant dry air reactor encapsulation and winding structure comprises the following components: the glass fiber filaments are pre-impregnated with an impregnating solution.
3. The cold-resistant and crack-resistant dry air reactor encapsulation and winding structure according to claim 1, wherein the cold-resistant and crack-resistant dry air reactor encapsulation and winding structure comprises the following components: the glass fiber cloth is pre-impregnated with an impregnating solution.
4. The cold-resistant and crack-resistant dry air reactor encapsulation and winding structure according to claim 1, wherein the cold-resistant and crack-resistant dry air reactor encapsulation and winding structure comprises the following components: and the second glass fiber yarn is pre-impregnated by the impregnating solution.
5. The cold-resistant and crack-resistant dry air reactor encapsulation and winding structure according to claim 1, wherein the cold-resistant and crack-resistant dry air reactor encapsulation and winding structure comprises the following components: the glass fiber yarn is pre-impregnated by the impregnating solution.
6. The cold-resistant and crack-resistant dry air reactor encapsulation and winding structure according to claim 1, wherein the cold-resistant and crack-resistant dry air reactor encapsulation and winding structure comprises the following components: and the glass fiber yarn is pre-impregnated by the impregnating solution.
7. The cold-resistant and crack-resistant dry air reactor encapsulation and winding structure according to claim 1, wherein the cold-resistant and crack-resistant dry air reactor encapsulation and winding structure comprises the following components: and winding the first glass fiber yarn, the first glass fiber cloth, the second glass fiber yarn, the third glass fiber yarn and the fourth glass fiber yarn, and then solidifying to complete encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320355156.6U CN219497527U (en) | 2023-03-01 | 2023-03-01 | Cold-resistant and cracking-resistant dry type air reactor encapsulation winding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320355156.6U CN219497527U (en) | 2023-03-01 | 2023-03-01 | Cold-resistant and cracking-resistant dry type air reactor encapsulation winding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219497527U true CN219497527U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320355156.6U Active CN219497527U (en) | 2023-03-01 | 2023-03-01 | Cold-resistant and cracking-resistant dry type air reactor encapsulation winding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219497527U (en) |
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2023
- 2023-03-01 CN CN202320355156.6U patent/CN219497527U/en active Active
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