CN103489636A - Dry-type direct-current filter capacitor suitable for being used in wet tropical zone - Google Patents
Dry-type direct-current filter capacitor suitable for being used in wet tropical zone Download PDFInfo
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- CN103489636A CN103489636A CN201310400644.5A CN201310400644A CN103489636A CN 103489636 A CN103489636 A CN 103489636A CN 201310400644 A CN201310400644 A CN 201310400644A CN 103489636 A CN103489636 A CN 103489636A
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Abstract
The invention discloses a dry-type direct-current filter capacitor suitable for being used in a wet tropical zone. The filter capacitor comprises a capacitor core set, an insulating layer, pouring materials, a metal shell, a shell cover and a lead-out terminal, wherein the capacitor core set is arranged in the metal shell, the insulating layer is arranged between the capacitor core set and the metal shell, the pouring materials are injected in a gap in the metal shell, the shell cover is buckled to the metal shell, the lead-out terminal is fixedly arranged on the shell cover, the lead-out terminal and the capacitor core set are electrically connected, the shell cover is provided with a pouring port tightly matched with the lead-out terminal, and the lead-out terminal penetrates through the pouring port to seal the pouring materials. According to the dry-type direct-current filter capacitor, in a wet tropical zone environment which is high in humidity and temperature, the phenomena that the pouring materials are separated from the shell, the surface of exposed epoxy resin cracks, and performance of the capacitor is degraded cannot occur, and reliability and stability of operation of the capacitor are guaranteed.
Description
Technical field
The present invention relates to a kind of humid tropics dry type DC filtering capacitor, belong to technical field of electric connectors.
Background technology
DC filter capacitors is widely used in high voltage direct current transmission (HVDC), the inverter of static var compensation (SVC), wind power generation, electric locomotive traction, AC and DC power transmission, excitation, high pressure soft starting, high-pressure frequency-conversion, rectifier, various power jacking equipment.The effective additional ripple cost of filtering voltage, smooth waveform.The dry type DC filtering capacitor generally uses epoxy resin as the perfusion material, because not producing leak of liquid, easy for installation, has obtained application more widely.
But the dry type DC filtering capacitor is at high humidity, under the high humid tropics environment of temperature after the several years is used, the partition capacitance device there will be epoxy resin perfusion material to separate with shell, the epoxy resin surface cracking exposed, and capacitor performance is deteriorated can not continue the phenomenon of using.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of humid tropics dry type DC filtering capacitor, under this capacitor humid tropics environment high at high humidity, temperature, not there will be the perfusion material to separate with shell, the epoxy resin surface cracking exposed, the phenomenon that capacitor performance is deteriorated, guarantee capacitor reliability of operation and stability.
For addressing the above problem, the technical solution used in the present invention is as follows:
A kind of humid tropics dry type DC filtering capacitor, comprise: capacitor core group, insulating barrier, the perfusion material, metal shell, cap, leading-out terminal, described capacitor core group is arranged in described metal shell, be provided with described insulating barrier between described capacitor core group and described metal shell, described perfusion material is filled in the space in described metal shell, described lid shell is fastened on described metal shell, described leading-out terminal is fixedly arranged on described lid shell, and described leading-out terminal is electrically connected to described capacitor core group, described cap is provided with and the close-fitting material filling mouth of described leading-out terminal, thereby described leading-out terminal seals described perfusion material through described material filling mouth.
As improvement of the technical scheme, described perfusion material is polyurethane.
As improvement of the technical scheme, described cap is fixedly connected with by electric welding with described metal shell.
As improvement of the technical scheme, the material of described cap and described metal shell is cold-rolled steel sheet, magnetism-free stainless steel or aluminium sheet.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
Humid tropics dry type DC filtering capacitor of the present invention, fasten described cap on described metal shell, can described perfusion material is fully airtight, the discord external environment directly contacts, thereby prevents that outside moisture is by the impact of said minuscule hole on described capacitor core group in described perfusion material.After urethane cures, be elastomer, hole is less, stable performance, and heat conductivility is better, and capacitor can better move under the humid tropics environment.At high humidity, temperature, under high humid tropics environment, not there will be the perfusion material to separate with shell, the epoxy resin surface cracking exposed, the phenomenon that capacitor performance is deteriorated, guaranteed capacitor reliability of operation and stability.
The accompanying drawing explanation
Fig. 1 is humid tropics dry type DC filtering capacitor structural representation of the present invention.
Embodiment
Content of the present invention is described below in conjunction with specific embodiments.
As shown in Figure 1, be humid tropics dry type DC filtering capacitor structural representation of the present invention.Humid tropics dry type DC filtering capacitor of the present invention, comprise: capacitor core group 1, insulating barrier 2, perfusion material 3, metal shell 4, cap 5, leading-out terminal 6, described capacitor core group 1 is arranged in described metal shell 4, be provided with described insulating barrier 2 between described capacitor core group 1 and described metal shell 4, described perfusion material 3 is filled in the space in described metal shell 4, described lid shell is fastened on described metal shell 4, described leading-out terminal 6 is fixedly arranged on described lid shell, and described leading-out terminal 6 is electrically connected to described capacitor core group 1, described cap 5 is provided with and the close-fitting material filling mouth of described leading-out terminal 6, thereby described leading-out terminal 6 seals described perfusion material 3 through described material filling mouth.Fasten described cap on described metal shell, can described perfusion material is fully airtight, the discord external environment directly contacts, thereby prevents that outside moisture is by the impact of said minuscule hole on described capacitor core group in described perfusion material.Described perfusion material 3 is polyurethane, after urethane cures, is elastomer, and hole is less, stable performance, and heat conductivility is better, and capacitor can better move under the humid tropics environment.Described cap 5 is fixedly connected with by electric welding with described metal shell 4.The material of described cap 5 and described metal shell 4 is cold-rolled steel sheet, magnetism-free stainless steel or aluminium sheet.By assembly connecting mode and the material of preferred described humid tropics dry type DC filtering capacitor, further improve seal.
The humid tropics dry type DC filtering capacitor that the present embodiment provides, at high humidity, temperature, under high humid tropics environment, not there will be the perfusion material to separate with shell, the epoxy resin surface cracking exposed, the phenomenon that capacitor performance is deteriorated, guaranteed capacitor reliability of operation and stability.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the concrete enforcement of the present invention only limits to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of protection of the invention.
Claims (4)
1. a humid tropics dry type DC filtering capacitor, comprise capacitor core group (1), insulating barrier (2), perfusion material (3), metal shell (4), cap (5), leading-out terminal (6), described capacitor core group (1) is arranged in described metal shell (4), be provided with described insulating barrier (2) between described capacitor core group (1) and described metal shell (4), described perfusion material (3) is filled in the space in described metal shell (4), described lid shell is fastened on described metal shell (4), described leading-out terminal (6) is fixedly arranged on described lid shell, and described leading-out terminal (6) is electrically connected to described capacitor core group (1), it is characterized in that: described cap (5) is provided with and the close-fitting material filling mouth of described leading-out terminal (6), described leading-out terminal (6) thus seal described perfusion material (3) through described material filling mouth.
2. humid tropics dry type DC filtering capacitor as claimed in claim 1, it is characterized in that: described perfusion material (3) is polyurethane.
3. humid tropics dry type DC filtering capacitor as claimed in claim 1, it is characterized in that: described cap (5) is fixedly connected with by electric welding with described metal shell (4).
4. humid tropics dry type DC filtering capacitor as claimed in claim 1, it is characterized in that: the material of described cap (5) and described metal shell (4) is cold-rolled steel sheet, magnetism-free stainless steel or aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310400644.5A CN103489636A (en) | 2013-09-06 | 2013-09-06 | Dry-type direct-current filter capacitor suitable for being used in wet tropical zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310400644.5A CN103489636A (en) | 2013-09-06 | 2013-09-06 | Dry-type direct-current filter capacitor suitable for being used in wet tropical zone |
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| Publication Number | Publication Date |
|---|---|
| CN103489636A true CN103489636A (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310400644.5A Pending CN103489636A (en) | 2013-09-06 | 2013-09-06 | Dry-type direct-current filter capacitor suitable for being used in wet tropical zone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360735A (en) * | 2018-11-06 | 2019-02-19 | 安徽赛福电子有限公司 | A kind of safety-type dry type DC filter condenser of resistance to high current |
| CN116190121A (en) * | 2022-12-30 | 2023-05-30 | 胜业电气股份有限公司 | Method for improving partial discharge performance between electrode shells of metal shell capacitor |
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| CN1474420A (en) * | 2003-07-10 | 2004-02-11 | 刘国光 | Outer casing inlayed seal capacitor and producing process |
| CN201655550U (en) * | 2010-01-26 | 2010-11-24 | 骆家星 | Environment-friendly capacitor capable of being mounted at any direction |
| CN201898031U (en) * | 2010-11-23 | 2011-07-13 | 宁波新容电器科技有限公司 | Capacitor cover |
| CN102522198A (en) * | 2011-12-08 | 2012-06-27 | 华中科技大学 | Metallized membrane capacitor assembly |
| CN203026363U (en) * | 2012-12-06 | 2013-06-26 | 来恩伟业(鹤壁)电子科技有限责任公司 | Square direct current (DC) capacitor |
| CN203521160U (en) * | 2013-09-06 | 2014-04-02 | 安徽赛福电子有限公司 | Humid tropics dry-type DC filtering capacitor |
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2013
- 2013-09-06 CN CN201310400644.5A patent/CN103489636A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474420A (en) * | 2003-07-10 | 2004-02-11 | 刘国光 | Outer casing inlayed seal capacitor and producing process |
| CN201655550U (en) * | 2010-01-26 | 2010-11-24 | 骆家星 | Environment-friendly capacitor capable of being mounted at any direction |
| CN201898031U (en) * | 2010-11-23 | 2011-07-13 | 宁波新容电器科技有限公司 | Capacitor cover |
| CN102522198A (en) * | 2011-12-08 | 2012-06-27 | 华中科技大学 | Metallized membrane capacitor assembly |
| CN203026363U (en) * | 2012-12-06 | 2013-06-26 | 来恩伟业(鹤壁)电子科技有限责任公司 | Square direct current (DC) capacitor |
| CN203521160U (en) * | 2013-09-06 | 2014-04-02 | 安徽赛福电子有限公司 | Humid tropics dry-type DC filtering capacitor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360735A (en) * | 2018-11-06 | 2019-02-19 | 安徽赛福电子有限公司 | A kind of safety-type dry type DC filter condenser of resistance to high current |
| CN116190121A (en) * | 2022-12-30 | 2023-05-30 | 胜业电气股份有限公司 | Method for improving partial discharge performance between electrode shells of metal shell capacitor |
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Application publication date: 20140101 |
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