CN105405650A - Cold-resistant alternating current filter capacitor - Google Patents
Cold-resistant alternating current filter capacitor Download PDFInfo
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- CN105405650A CN105405650A CN201510774609.9A CN201510774609A CN105405650A CN 105405650 A CN105405650 A CN 105405650A CN 201510774609 A CN201510774609 A CN 201510774609A CN 105405650 A CN105405650 A CN 105405650A
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- filter capacitor
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Abstract
The invention discloses a cold-resistant alternating current filter capacitor. The capacitor comprises a shell, a capacitor core group and an insulating material layer wrapping the capacitor core group; the middle of the shell is hollow-structured; the capacitor core group formed by a plurality of capacitor core units is mounted in the hollow part of the shell; a metal shell layer is arranged outside the insulating material layer; a thermal insulating layer is arranged on the outer surface of the metal shell; and each capacitor core unit in the capacitor core group is provided with a polypropylene thin film layer. The cold-resistant alternating current filter capacitor can be used in cold areas without cracking or warping the shell; the capacitor is good in sealing property; the capacitor core unit is helically wrapped with the polypropylene thin film layer, so that the usage amount of materials is reduced, and the capacitor is high in thermal dissipation performance; and due to the thermal insulating layer, the temperature difference between the inside and the outside of the metal shell is reduced, and the influence of the temperature difference on the capacitor is reduced, so that the stability and the service lifetime of the capacitor are improved.
Description
Technical field
The present invention relates to a kind of electric installation field, particularly relate to a kind of cold-resistant ac filter capacitor.
Background technology
Ac filter capacitor can absorb the harmonic wave that harmonic source produces on the spot, prevents a large amount of harmonic wave from entering system, thus harmonic carcellation pollutes, and improves the power supply quality of electrical network.In the area of cold or the season of severe cold, capacitor is more serious by the impact of temperature, the phenomenon of shell cracking or warpage can be caused, capacitance core subgroup in the ac filter capacitor of prior art is generally reeled by insulating thin layer to form, waste of materialization is larger, and capacitor does not take corresponding Insulation yet, therefore, it is necessary for designing special cold-resistant ac filter capacitor for cold district.
Therefore, in order to solve above-mentioned Problems existing, the present invention spy provides a kind of new technical scheme.
Summary of the invention
The object of this invention is to provide the cold-resistant ac filter capacitor that a kind of cost is low, have insulation effect.
The present invention is directed to the technical scheme that above-mentioned technological deficiency adopts is:
A kind of cold-resistant ac filter capacitor, comprise housing, capacitance core subgroup and be wrapped in the insulation material layer of capacitance core subgroup, described case top is provided with a seal cover, described housing central section is hollow structure, hollow space is provided with a capacitance core subgroup be made up of several capacitor core unit, described insulation material layer is outside equipped with layer of metal shell, described metal shell outer surface is provided with one layer of heat preservation layer, described capacitance core subgroup is provided with two lead-in wires, lead-in wire is connected to corresponding binding post through seal cover, binding post is fixed by screws on seal cover, each capacitor core unit in described capacitance core subgroup is equipped with layer of polypropylene foil.
Further, described layer of polypropylene foil is spirally wound on capacitor core unit.
Further, the lead angle of described spiral layer of polypropylene foil is 5-10
.
Further, binding post and seal cover junction are cast with one deck silicone rubber sealant, the two edges of silicone rubber sealant are provided with the sealing ring coordinated with housing seal.
Further, described inner chamber is provided with at least one fin.
Further, the material of described metal shell is cold-rolled steel sheet.
Further, the material of described heat-insulation layer is epoxy resin.
The invention has the beneficial effects as follows: the present invention can use in cold district and there will not be the phenomenon of shell cracking or warpage, good airproof performance.Polypropylene insulating film helical layer is wrapped on capacitor core unit, decreases the use of material; On housing cavity, heat radiation is convenient in the setting of fin, and heat-insulation layer be provided with the temperature difference being beneficial to and reducing inside and outside metal shell, reduce the temperature difference to the impact of capacitor, ensure capacitor steady operation, improve the useful life of capacitor.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Wherein: 1, housing, 2, capacitance core subgroup, 3, seal cover, 4, insulation material layer, 5, metal shell, 6, heat-insulation layer, 7, lead-in wire, 8, binding post, 9, screw, 10, layer of polypropylene foil, 11, silicone rubber sealant, 12, sealing ring, 13, fin, 101, inner chamber.
Embodiment
The cold-resistant ac filter capacitor of one as shown in Figure 1, comprise housing 1, capacitance core subgroup 2 and be wrapped in the insulation material layer 4 of capacitance core subgroup 2, housing 1 top is provided with a seal cover 3, it is hollow structure in the middle part of housing 1, hollow space is provided with a capacitance core subgroup 2 be made up of several capacitor core unit, insulation material layer 4 is outside equipped with layer of metal shell 5, metal shell 5 outer surface is provided with one layer of heat preservation layer 6, capacitance core subgroup 2 is provided with two lead-in wires 7, lead-in wire 7 is connected to corresponding binding post 8 through seal cover 3, binding post 8 is fixed on seal cover 3 by screw 9, each capacitor core unit in capacitance core subgroup 2 is equipped with layer of polypropylene foil 10.
Wherein, layer of polypropylene foil 10 is spirally wound on capacitor core unit, and the lead angle of spiral layer of polypropylene foil 10 is 5-10
., preferably, in the present embodiment, lead angle is 8
.,, capacitor core unit can be wrapped comprehensively, also reduce the use of material, reduce production cost.Binding post 8 and seal cover 3 junction are cast with one deck silicone rubber sealant 11, the two edges of silicone rubber sealant 11 are provided with the sealing ring 12 be sealed and matched with housing 1, good airproof performance.
In addition, inner chamber 101 is provided with at least one fin 13, and be convenient to capacitor heat radiation, the material of metal shell 5 is cold-rolled steel sheet, and hardness is large, can there will not be the phenomenon of shell cracking or warpage in cold district use.The material of heat-insulation layer 6 is epoxy resin, does not shrink, not brittle under low temperature environment, environmental protection, and is conducive to reducing the temperature difference inside and outside metal shell, reduces the temperature difference to the impact of capacitor, ensures capacitor steady operation, improve the useful life of capacitor.
The invention has the beneficial effects as follows: the present invention can use in cold district and there will not be the phenomenon of shell cracking or warpage, good airproof performance, the cost of material is low, thermal diffusivity is good, and heat-insulation layer be provided with the temperature difference being beneficial to and reducing inside and outside metal shell, improve stability and the useful life of capacitor.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a cold-resistant ac filter capacitor, comprise housing, capacitance core subgroup and be wrapped in the insulation material layer of capacitance core subgroup, described case top is provided with a seal cover, described housing central section is hollow structure, hollow space is provided with a capacitance core subgroup be made up of several capacitor core unit, described insulation material layer is outside equipped with layer of metal shell, it is characterized in that: described metal shell outer surface is provided with one layer of heat preservation layer, described capacitance core subgroup is provided with two lead-in wires, lead-in wire is connected to corresponding binding post through seal cover, binding post is fixed by screws on seal cover, each capacitor core unit in described capacitance core subgroup is equipped with layer of polypropylene foil.
2. the cold-resistant ac filter capacitor of one according to claim 1, is characterized in that: described layer of polypropylene foil is spirally wound on capacitor core unit.
3. the cold-resistant ac filter capacitor of one according to claim 1, is characterized in that: the lead angle of described spiral layer of polypropylene foil is 5-10
.
4. the cold-resistant ac filter capacitor of one according to claim 1, is characterized in that: binding post and seal cover junction are cast with one deck silicone rubber sealant, the two edges of silicone rubber sealant are provided with the sealing ring coordinated with housing seal.
5. the cold-resistant ac filter capacitor of one according to claim 1, is characterized in that: described inner chamber is provided with at least one fin.
6. the cold-resistant ac filter capacitor of one according to claim 1, is characterized in that: the material of described metal shell is cold-rolled steel sheet.
7. the cold-resistant ac filter capacitor of one according to claim 1, is characterized in that: the material of described heat-insulation layer is epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510774609.9A CN105405650B (en) | 2015-11-13 | 2015-11-13 | A kind of cold-resistant ac filter capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510774609.9A CN105405650B (en) | 2015-11-13 | 2015-11-13 | A kind of cold-resistant ac filter capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105405650A true CN105405650A (en) | 2016-03-16 |
| CN105405650B CN105405650B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510774609.9A Active CN105405650B (en) | 2015-11-13 | 2015-11-13 | A kind of cold-resistant ac filter capacitor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446646Y (en) * | 2000-09-05 | 2001-09-05 | 上海贵宝机电有限公司 | Radiating power capacitor |
| CN2651914Y (en) * | 2003-09-09 | 2004-10-27 | 常州二电仪光电子装备有限公司 | Low-temperature high-efficient electrolytic capacitor |
| CN201408651Y (en) * | 2009-05-21 | 2010-02-17 | 上海春黎电子实业有限公司 | Capacitor utilizing insulating adhesive tape and epoxide resin |
| CN201673816U (en) * | 2010-05-10 | 2010-12-15 | 佛山市南海区欣源电子有限公司 | Sealing axial capacitor |
| CN202084434U (en) * | 2011-06-28 | 2011-12-21 | 成都宏明电子股份有限公司 | Fully-sealed structure of capacitor |
| CN202678107U (en) * | 2012-07-16 | 2013-01-16 | 佛山市意壳电容器有限公司 | Axial capacitor provided with mounting bracket |
| CN203562312U (en) * | 2013-10-17 | 2014-04-23 | 王元洪 | Thin film capacitor with metal casing |
-
2015
- 2015-11-13 CN CN201510774609.9A patent/CN105405650B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446646Y (en) * | 2000-09-05 | 2001-09-05 | 上海贵宝机电有限公司 | Radiating power capacitor |
| CN2651914Y (en) * | 2003-09-09 | 2004-10-27 | 常州二电仪光电子装备有限公司 | Low-temperature high-efficient electrolytic capacitor |
| CN201408651Y (en) * | 2009-05-21 | 2010-02-17 | 上海春黎电子实业有限公司 | Capacitor utilizing insulating adhesive tape and epoxide resin |
| CN201673816U (en) * | 2010-05-10 | 2010-12-15 | 佛山市南海区欣源电子有限公司 | Sealing axial capacitor |
| CN202084434U (en) * | 2011-06-28 | 2011-12-21 | 成都宏明电子股份有限公司 | Fully-sealed structure of capacitor |
| CN202678107U (en) * | 2012-07-16 | 2013-01-16 | 佛山市意壳电容器有限公司 | Axial capacitor provided with mounting bracket |
| CN203562312U (en) * | 2013-10-17 | 2014-04-23 | 王元洪 | Thin film capacitor with metal casing |
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| Publication number | Publication date |
|---|---|
| CN105405650B (en) | 2018-03-16 |
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Effective date of registration: 20191225 Address after: Room 103, No. 108, Mingzhu Avenue, yonganzhou Town, Gaogang District, Taizhou City, Jiangsu Province Patentee after: Taizhou runhan Intellectual Property Agency Co., Ltd Address before: 215400, Suzhou, Jiangsu province Taicang City pontoon bridge north road, South Nine Dragon Road East A building, room 618 Patentee before: TAICANG RONGZHONG ELECTRICAL AND MECHANICAL TECHNOLOGY CO., LTD. |