CN116130261A - High-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation - Google Patents
High-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation Download PDFInfo
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- CN116130261A CN116130261A CN202310389343.0A CN202310389343A CN116130261A CN 116130261 A CN116130261 A CN 116130261A CN 202310389343 A CN202310389343 A CN 202310389343A CN 116130261 A CN116130261 A CN 116130261A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 47
- 238000005266 casting Methods 0.000 title claims abstract description 46
- 238000005470 impregnation Methods 0.000 title claims abstract description 43
- 230000005684 electric field Effects 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 46
- 239000011347 resin Substances 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920003192 poly(bis maleimide) Polymers 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000009719 polyimide resin Substances 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 229920002050 silicone resin Polymers 0.000 claims description 3
- 229920006305 unsaturated polyester Polymers 0.000 claims description 3
- 229920001567 vinyl ester resin Polymers 0.000 claims description 3
- 239000011342 resin composition Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 8
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract description 5
- 230000008023 solidification Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/04—Drying; Impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Insulating Bodies (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation, and relates to the technical field of insulating sleeve capacitor core casting. The electric field auxiliary impregnation method can improve the impregnation efficiency and the impregnation speed of the resin in the manufacturing process of the glue-impregnated dry sleeve; the interaction of the electric field with proper strength and charged particles in the preparation system is beneficial to the impregnation of the liquid resin compound in the capacitor core, so that the resin is more uniformly distributed between the crepe paper and the conductor, and the risk of gaps and bubbles after solidification is greatly reduced; the capacitor core rotates in the impregnation process, so that the impregnation degree of the resin can be improved, the resin can be prevented from becoming too high in viscosity in the reaction process, and the heat dissipation of the resin in the curing process can be accelerated.
Description
Technical Field
The invention relates to the technical field of insulating sleeve capacitor core casting, in particular to a high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation.
Background
The high-voltage AC/DC insulating sleeve is used for leading a current-carrying conductor to pass through a metal box or a conductor of equipment with different potential in a power system, and leading in or out full voltage and full current, so that the high-voltage AC/DC insulating sleeve can play a role of insulation and mechanical support.
Although the traditional oil type sleeve has good sealing performance, the risks of oil leakage, non-fireproof and the like exist, and SF 6 The gas insulating sleeve has the advantages of simple structure, light weight, good heat dissipation, good circulation and convenient operation and maintenance, but has the defects of air leakage, toxicity and the like.
The glue dipping dry sleeve can avoid the defects, but has complex physical and chemical properties, high curing process difficulty, easy internal cracking and bubble generation in the packaging process, partial discharge caused by breakdown of an insulating part and accidents.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation, which solves the problems that the glue-impregnated dry insulating sleeve capacitor core is easy to crack and generate bubbles.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation sequentially comprises the following steps:
s1, winding a capacitor core
Winding a semiconductive paper layer on a metal guide rod, and then alternately winding a corrugated paper layer and a reticular conductor layer until the number of preset layers is reached;
s2, mounting into a die
Filling the wound capacitor core into a mold of casting process equipment, and placing both the capacitor core and the mold in a vacuum environment;
s3, first electrifying
Grounding the die and electrifying the metal guide rod for the first time;
s4, casting resin
Pouring a liquid resin compound into the mold in a vacuum environment and in a state that the metal guide rod is electrified;
s5, rotating capacitor core
In the casting process, driving the metal guide rod to rotate;
s6, electrifying for the second time
Electrifying the metal guide rod for the second time;
s7, solidifying and taking out
Stopping rotating after the liquid resin compound is poured, heating and curing the liquid resin compound, and taking out after curing is finished.
Preferably, the first power-on in S3 is one or more of direct current, alternating current and pulse voltage; the second power-on in the step S6 is one or more of direct current, alternating current and pulse voltage.
Preferably, the frequency range of the alternating voltage is 10 Hz-100 kHz, and the size range of the alternating voltage is 20V-500 kV; the direct current voltage ranges from 20V to 500kV; the amplitude range of the pulse voltage is 20V-700 kV.
Preferably, the temperature in the mould is controlled to be less than 180 ℃ in the casting process.
Preferably, in the casting process, the vacuum pressure in casting process equipment is controlled to be 40-60 Pa.
Preferably, in S4, the liquid resin compound includes: epoxy resin, silicone resin, polyurethane resin, cyanate resin, phenolic resin, unsaturated polyester, vinyl ester, bismaleimide and polyimide resin or a mixture of several.
Preferably, in the step S5, the rotation speed of the capacitor core is 10-1000r/min.
Preferably, the casting process apparatus includes: the device comprises a die, a vacuum cabin, a first guide rod, a second guide rod and a pouring pipe;
the die is installed in the vacuum cabin in an insulating way, and the top of the die is opened;
the first guide rod is connected with the cabin cover of the vacuum cabin in a penetrating way through the first sealing bearing, the second guide rod and the first guide rod are coaxially arranged, and the second guide rod is connected with the vacuum cabin and the die in a penetrating way through the second sealing bearing and the third sealing bearing respectively;
two ends of the metal guide rod are respectively in spline connection with the first guide rod and the second guide rod;
the first guide rod is connected with the power supply assembly through a first slip ring, and the second guide rod is connected with the power supply assembly through a second slip ring;
the first guide rod and/or the second guide rod are/is in transmission connection with the rotary driving assembly;
the pouring pipe penetrates through the vacuum cabin in a sealing mode, the upper end of the pouring pipe is communicated with the vacuum feeding tank, and the lower end of the pouring pipe extends into the die.
Preferably, the vacuum cabin is provided with a vacuum pump, the die is installed in the vacuum cabin through an insulating bracket, and the lower end of the pouring tube is arranged in a funnel shape and is attached to the inner wall of the die.
Preferably, a temperature control cavity is arranged in the mold wall of the mold, an inlet pipe extending out of the vacuum chamber is arranged at the bottom of the temperature control cavity, and an outlet pipe extending out of the vacuum chamber is arranged at the top of the temperature control cavity; and a temperature control medium is injected into the temperature control cavity through the inlet pipe to heat or cool the die.
(III) beneficial effects
The invention provides a high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation. Compared with the prior art, the method has the following beneficial effects:
in the invention, the electric field auxiliary impregnation method is adopted to improve the impregnation efficiency and the impregnation speed of the resin in the manufacturing process of the glue-impregnated dry sleeve; the interaction of the electric field with proper strength and charged particles in the preparation system is beneficial to the impregnation of the liquid resin compound in the capacitor core, so that the resin is more uniformly distributed between the crepe paper and the conductor, and the risk of gaps and bubbles after solidification is greatly reduced; the capacitor core rotates in the impregnation process, so that the impregnation degree of the resin can be improved, the resin can be prevented from becoming too high in viscosity in the reaction process, and the heat dissipation of the resin in the curing process can be accelerated.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a casting process apparatus according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the application solves the problems that the glue dipping dry type insulating sleeve capacitor core is easy to crack and generate bubbles by providing the high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary dipping.
The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
in the embodiment of the invention, the electric field auxiliary impregnation method can improve the impregnation efficiency and the impregnation speed of the resin in the manufacturing process of the glue-impregnated dry sleeve; the interaction of the electric field with proper strength and charged particles in the preparation system is beneficial to the impregnation of the liquid resin compound in the capacitor core, so that the resin is more uniformly distributed between the crepe paper and the conductor, and the risk of gaps and bubbles after solidification is greatly reduced; the capacitor core rotates in the impregnation process, so that the impregnation degree of the resin can be improved, the resin can be prevented from becoming too high in viscosity in the reaction process, and the heat dissipation of the resin in the curing process can be accelerated.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Examples:
as shown in fig. 1, the invention provides a high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation, which sequentially comprises the following steps:
s1, winding a capacitor core
Winding a semiconductive paper layer on a metal guide rod 1, and then alternately winding a corrugated paper layer 2 and a netlike conductor layer 3 until the number of preset layers is reached;
s2, mounting into a die
Filling the wound capacitor core into a die 4 of casting process equipment, and placing both the capacitor core and the die 4 in a vacuum environment;
s3, first electrifying
Grounding the die 4 and electrifying the metal guide rod 1 for the first time;
s4, casting resin
Pouring the liquid resin compound into the mold 4 under the vacuum environment and the state that the metal guide rod 1 is electrified;
s5, rotating capacitor core
In the casting process, the metal guide rod 1 is driven to rotate;
s6, electrifying for the second time
Electrifying the metal guide rod 1 for the second time;
s7, solidifying and taking out
Stopping rotating after the liquid resin compound is poured, heating and curing the liquid resin compound, and taking out after curing is finished.
The first power-on in the step S3 is one or more of direct current, alternating current and pulse voltage; the second power-on in the step S6 is one or more of direct current, alternating current and pulse voltage.
Before the second power-on in S6, the first power-on may be stopped before the second power-on, or the second power-on may be directly performed without stopping the first power-on.
The frequency range of the alternating voltage is 10 Hz-100 kHz, and the magnitude range of the alternating voltage is 20V-500 kV; the direct current voltage ranges from 20V to 500kV; the amplitude range of the pulse voltage is 20V-700 kV.
In the casting process, in order to avoid the viscosity of the casting material rising too fast, the temperature in the die 4 is controlled to be less than 180 ℃.
In the casting process, controlling the vacuum pressure in casting process equipment to be 40-60 Pa.
In the step S4, the liquid resin composite includes: epoxy resin, silicone resin, polyurethane resin, cyanate resin, phenolic resin, unsaturated polyester, vinyl ester, bismaleimide and polyimide resin or a mixture of several.
In the step S5, the rotation speed of the capacitor core is 10-1000r/min.
As shown in fig. 1, the casting process apparatus includes: the mold 4, the vacuum cabin 5, the first guide rod 6, the second guide rod 7 and the pouring pipe 13;
the die 4 is installed in the vacuum cabin 5 in an insulating manner, and the top of the die 4 is opened;
the first guide rod 6 is connected with a cabin cover of the vacuum cabin 5 in a penetrating way through a first sealing bearing 8, the second guide rod 7 and the first guide rod 6 are coaxially arranged, and the second guide rod 7 is connected with the vacuum cabin 5 and the die 4 in a penetrating way through a second sealing bearing 9 and a third sealing bearing 10 respectively;
the two ends of the metal guide rod 1 are respectively connected with the first guide rod 6 and the second guide rod 7 through splines, so that the capacitor core is mounted in the die 4;
the first guide rod 6 is connected with a power supply assembly through a first slip ring 11, and the second guide rod 7 is connected with the power supply assembly through a second slip ring 12, so that the metal guide rod 1 is electrified;
the first guide rod 6 and/or the second guide rod 7 are in transmission connection with a rotary driving assembly, so that the rotary driving of the metal guide rod 1 is realized;
the pouring tube 13 penetrates through the vacuum cabin 5 in a sealing mode, the upper end of the pouring tube 13 is communicated with the vacuum feeding tank, the lower end of the pouring tube extends into the die 4, and the liquid resin compound is poured into the die 4.
As shown in fig. 1, the vacuum chamber 5 is provided with a vacuum pump 14 for providing a suitable vacuum pressure in the vacuum chamber 5.
As shown in fig. 1, the mold 4 is installed in the vacuum chamber 5 through an insulating bracket 15.
As shown in fig. 1, a temperature control cavity 16 is arranged in the mold wall of the mold 4, an inlet pipe 17 extending out of the vacuum chamber 5 is arranged at the bottom of the temperature control cavity 16, and an outlet pipe 18 extending out of the vacuum chamber 5 is arranged at the top of the temperature control cavity 16; the temperature control medium is injected into the temperature control cavity 16 through the inlet pipe 17 to heat or cool the die 4; in the casting process, the temperature in the die 4 is controlled to be less than 180 ℃, and in S7, the die 4 is heated to promote the solidification of the liquid resin compound.
As shown in fig. 1, the lower end of the pouring tube 13 is funnel-shaped and is attached to the inner wall of the mold 4, and the aperture of the outlet of the lower end of the pouring tube 13 is 2-3cm, so that the liquid resin compound slides in along the inner wall of the mold 4, and the probability of generating bubbles between the liquid resin compound and the mold 4 is reduced.
The rotary driving assembly adopts one or more driving modes such as a driving motor, a magnetic pump, a mechanical rocker and the like.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. in the embodiment of the invention, the electric field auxiliary impregnation method can improve the impregnation efficiency and the impregnation speed of the resin in the manufacturing process of the glue-impregnated dry sleeve; the interaction of the electric field with proper strength and charged particles in the preparation system is beneficial to the impregnation of the liquid resin compound in the capacitor core, so that the resin is more uniformly distributed between the crepe paper and the conductor, and the risk of gaps and bubbles after solidification is greatly reduced; the capacitor core rotates in the impregnation process, so that the impregnation degree of the resin can be improved, the resin can be prevented from becoming too high in viscosity in the reaction process, and the heat dissipation of the resin in the curing process can be accelerated.
2. The application of various types of voltages (direct current, alternating current, pulsed voltage) facilitates the complete impregnation of the liquid resin composition.
3. The liquid resin compound injection port adopts a funnel type design, so that the injection rate and flow rate can be reduced, and the generation of bubbles is avoided.
4. The design of the temperature control cavity is beneficial to heat dissipation during resin curing, and avoids too high curing speed and uneven internal curing stress caused by high temperature.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The high-voltage insulating sleeve capacitor core casting process based on electric field auxiliary impregnation is characterized by comprising the following steps of:
s1, winding a capacitor core
Winding a semi-conductive paper layer on a metal guide rod (1), and then alternately winding a corrugated paper layer (2) and a netlike conductor layer (3) until the number of the preset layers is reached;
s2, mounting into a die
Filling the wound capacitor core into a mould (4) of casting process equipment, and placing both the capacitor core and the mould (4) in a vacuum environment;
s3, first electrifying
Grounding the die (4) and electrifying the metal guide rod (1) for the first time;
s4, casting resin
Pouring a liquid resin compound into the mold (4) under the condition of a vacuum environment and electrifying the metal guide rod (1);
s5, rotating capacitor core
In the casting process, the metal guide rod (1) is driven to rotate;
s6, electrifying for the second time
Electrifying the metal guide rod (1) for the second time;
s7, solidifying and taking out
Stopping rotating after the liquid resin compound is poured, heating and curing the liquid resin compound, and taking out after curing is finished.
2. The casting process of the capacitor core of the high-voltage insulating sleeve based on electric field auxiliary impregnation according to claim 1, wherein the first energization in the step S3 is one or more of direct current, alternating current and pulse voltage; the second power-on in the step S6 is one or more of direct current, alternating current and pulse voltage.
3. The casting process of the high-voltage insulating sleeve capacitor core based on electric field auxiliary impregnation according to claim 2, wherein the frequency range of the alternating voltage is 10 Hz-100 kHz, and the magnitude range of the alternating voltage is 20V-500 kV; the direct current voltage ranges from 20V to 500kV; the amplitude range of the pulse voltage is 20V-700 kV.
4. The casting process of the high-voltage insulating sleeve capacitor core based on electric field auxiliary impregnation according to claim 1, wherein the temperature in the mould (4) is controlled to be less than 180 ℃ during the casting process.
5. The casting process of the high-voltage insulating sleeve capacitor core based on electric field auxiliary impregnation according to claim 1, wherein the vacuum pressure in casting process equipment is controlled to be 40-60 Pa in the casting process.
6. The electric field assisted impregnation based high voltage bushing capacitor core casting process of claim 1 wherein in S4 the liquid resin composition comprises: epoxy resin, silicone resin, polyurethane resin, cyanate resin, phenolic resin, unsaturated polyester, vinyl ester, bismaleimide and polyimide resin or a mixture of several.
7. The casting process of the capacitor core of the high-voltage insulating sleeve based on electric field auxiliary impregnation according to claim 1, wherein in the step S5, the rotation speed of the capacitor core is 10-1000r/min.
8. The casting process of the high-voltage insulating sleeve capacitor core based on electric field auxiliary impregnation according to claim 1, wherein the casting process equipment comprises: the device comprises a die (4), a vacuum cabin (5), a first guide rod (6), a second guide rod (7) and a pouring pipe (13);
the die (4) is installed in the vacuum cabin (5) in an insulating mode, and the top of the die (4) is opened;
the first guide rod (6) is connected with a cabin cover of the vacuum cabin (5) in a penetrating way through a first sealing bearing (8), the second guide rod (7) and the first guide rod (6) are coaxially arranged, and the second guide rod (7) is connected with the vacuum cabin (5) and the die (4) in a penetrating way through a second sealing bearing (9) and a third sealing bearing (10) respectively;
the two ends of the metal guide rod (1) are respectively connected with the first guide rod (6) and the second guide rod (7) through splines;
the first guide rod (6) is connected with the power supply assembly through a first slip ring (11), and the second guide rod (7) is connected with the power supply assembly through a second slip ring (12);
the first guide rod (6) and/or the second guide rod (7) are in transmission connection with the rotary driving assembly;
the pouring pipe (13) penetrates through the vacuum cabin (5) in a sealing mode, the upper end of the pouring pipe (13) is communicated with the vacuum feeding tank, and the lower end of the pouring pipe extends into the die (4).
9. The electric field auxiliary impregnation-based high-voltage insulating sleeve capacitor core casting process according to claim 8, wherein the vacuum chamber (5) is provided with a vacuum pump (14), the die (4) is installed in the vacuum chamber (5) through an insulating bracket (15), and the lower end of the casting tube (13) is provided in a funnel shape and is attached to the inner wall of the die (4).
10. The casting process of the high-voltage insulating sleeve capacitor core based on electric field auxiliary impregnation according to claim 8, wherein a temperature control cavity (16) is arranged in a mold wall of the mold (4), an inlet pipe (17) extending out of the vacuum chamber (5) is arranged at the bottom of the temperature control cavity (16), and an outlet pipe (18) extending out of the vacuum chamber (5) is arranged at the top of the temperature control cavity (16); the temperature control medium is injected into the temperature control cavity (16) through the inlet pipe (17) to heat or cool the die (4).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117059352A (en) * | 2023-10-13 | 2023-11-14 | 搏世因（北京）高压电气有限公司 | Glue-immersed fiber capacitive dry sleeve and manufacturing method thereof |
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| CN113991956A (en) * | 2020-05-26 | 2022-01-28 | 苏州巨峰电气绝缘系统股份有限公司 | Insulation processing method of motor and stator winding of new-energy electric automobile motor |
| CN115116723A (en) * | 2022-08-30 | 2022-09-27 | 合肥工业大学 | Transformer packaging method based on electric field driven infiltration |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2255212A1 (en) * | 1972-11-10 | 1974-05-22 | Micafil Ag | Resin potting of oil-impregnated electrical components - using cold-setting polyurethane resins without vacuum |
| CN104260328A (en) * | 2014-09-05 | 2015-01-07 | 哈尔滨理工大学 | Electromagnetic heating curing and forming device and method for preparing filament wound composite material pipe body by using electromagnetic heating curing and forming device |
| CN113991956A (en) * | 2020-05-26 | 2022-01-28 | 苏州巨峰电气绝缘系统股份有限公司 | Insulation processing method of motor and stator winding of new-energy electric automobile motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117059352A (en) * | 2023-10-13 | 2023-11-14 | 搏世因（北京）高压电气有限公司 | Glue-immersed fiber capacitive dry sleeve and manufacturing method thereof |
| CN117059352B (en) * | 2023-10-13 | 2024-01-30 | 搏世因（北京）高压电气有限公司 | Glue-immersed fiber capacitive dry sleeve and manufacturing method thereof |
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| CN116130261B (en) | 2023-07-04 |
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