CN204498078U - Ultra broadband shielded enclosure power-supply filter - Google Patents
Ultra broadband shielded enclosure power-supply filter Download PDFInfo
- Publication number
- CN204498078U CN204498078U CN201520235274.9U CN201520235274U CN204498078U CN 204498078 U CN204498078 U CN 204498078U CN 201520235274 U CN201520235274 U CN 201520235274U CN 204498078 U CN204498078 U CN 204498078U
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- Prior art keywords
- shielding cavity
- shielded enclosure
- dividing plate
- supply filter
- parts
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- 238000001914 filtration Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 229920000742 Cotton Polymers 0.000 claims abstract description 9
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 25
- 229910000859 α-Fe Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 238000012216 screening Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides a kind of ultra broadband shielded enclosure power-supply filter, comprise housing, upper cover plate, N number of dividing plate and N number of filtering components and parts, upper cover plate and the suitable formation shielding cavity of housing, N number of dividing plate is arranged in filtering chamber and shielding cavity is divided into N-1 little shielding cavity, dividing plate is connected gap place and is filled with and shields cotton with shielding cavity, shielding leak detection device is provided with in little shielding cavity, the inwall of housing and the inwall of upper cover plate are disposed with suction ripple layer and insulating barrier, and N number of filtering components and parts are positioned at N-1 little shielding cavity successively and are fixed on successively on N number of dividing plate.The utility model, effective obstruct and absorb the surface-creeping w ave that shielded enclosure power-supply filter occurs in high-frequency band filter enclosure interior, and to be connected gap place with shielding cavity at dividing plate and to be filled with and to shield cotton, dividing plate can be avoided with shielding cavity to be connected the leakage signal in gap, shielding leak detection device is set in little shielding cavity, can carries out in time repairing and management and control.
Description
Technical field
The utility model relates to wave filter technology field, refers to a kind of ultra broadband shielded enclosure power-supply filter especially.
Background technology
In recent years, along with the development of electronic science and technology, the shielded enclosure needed for microwave experiment or the frequency range required by darkroom more and more higher, extend to 40GHz from original 18GHz, estimate future also can be more and more higher.In order to ensure micro-wave screening room or the darkroom screening effectiveness in test frequency band, interference signal is not caused to be introduced into micro-wave screening room or darkroom yet because of the introducing of power supply line, just shielded enclosure power-supply filter must be installed, interference on filter out power line, to ensure the screening effectiveness of micro-wave screening room or darkroom.Also require that shielded enclosure power-supply filter is in the frequency band range that micro-wave screening room or darkroom specify, has higher insertion loss simultaneously.In order to reduce the usage quantity of shielded enclosure filter, reducing construction fund, also requiring that shielded enclosure power-supply filter has enough large performance number, i.e. load current value.
Traditional shielded enclosure power-supply filter, filter circuit is placed in a shielding cavity, when there being high-frequency noise to pass through, high-frequency noise can be coupled out surface-creeping w ave at shielded enclosure power source filter shell inner surface, surface-creeping w ave can be transferred to shielded enclosure power-supply filter output along shielded enclosure power source filter shell from shielded enclosure power-supply filter input, causes shielded enclosure power-supply filter filter effect to decline.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of ultra broadband shielded enclosure power-supply filter, while guarantee shielded enclosure power-supply filter filter effect, can improve shield effectiveness, and detect shielding leakage.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of ultra broadband shielded enclosure power-supply filter, comprise housing, upper cover plate, N number of dividing plate and N number of filtering components and parts, described upper cover plate and the suitable formation shielding cavity of housing, described N number of dividing plate is arranged in filtering chamber and shielding cavity is divided into N-1 little shielding cavity, described dividing plate is connected gap place and is filled with and shields cotton with shielding cavity, shielding leak detection device is provided with in described little shielding cavity, the inwall of described housing and the inwall of upper cover plate are disposed with suction ripple layer and insulating barrier, two plate faces of described dividing plate are all disposed with and inhale ripple layer and insulating barrier, N be more than or equal to 1 integer, N number of filtering components and parts are positioned at N-1 little shielding cavity successively and are fixed on successively on N number of dividing plate.
Preferably, described housing outer surface is provided with leakage alarm, and described leakage alarm is connected with described shielding leak detection device.
Preferably, described filtering components and parts comprise feedthrough capacitor and inductance, described inductance comprises interconnective FERRITE CORE and ferrocart core magnetic core, the other end of described FERRITE CORE is connected with the output of the feedthrough capacitor of described filtering components and parts, and the other end of described ferrocart core magnetic core is connected with the stiff end of the feedthrough capacitor of adjacent filtering components and parts.
Preferably, described filtering components and parts comprise feedthrough capacitor and inductance, described inductance is FERRITE CORE or ferrocart core magnetic core, one end of described inductance is connected with the output of the feedthrough capacitor of described filtering components and parts, and the other end of described inductance is connected with the stiff end of the feedthrough capacitor of adjacent filtering components and parts.
Preferably, described filtering components and parts comprise the capacitance core group X1 that take organic film as medium; At least one take organic film as the capacitance core group Y2 of medium, is arranged at the side of described capacitance core group X1; At least one inductance coil L, is arranged at the side of described capacitance core group X1; Described capacitance core group Y2, inductance coil L are connected with capacitance core group X1 by wire.
Preferably, N be more than or equal to 2 integer.
Preferably, described upper cover plate comprises inner cap and enclosing cover, and described inner cap is welded on casing of filter, and the outside that described enclosing cover is positioned at inner cap is fixed on housing.
Preferably, described housing is metal shell.
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, have employed the design of shielded enclosure power source filter shell warehouse separated type, apply feedthrough capacitor, the surface of each shielding cavity in shielded enclosure power source filter shell inside and shielded enclosure power-supply filter inner cap is arranged inhales ripple layer, effective obstruct and absorb the surface-creeping w ave that shielded enclosure power-supply filter occurs in high-frequency band filter enclosure interior, thus improve the working frequency range of shielded enclosure power-supply filter, improve the insertion loss value of shielded enclosure power-supply filter at work full frequency band, and effectively can add the rated working current value of shielded enclosure power-supply filter, and to be connected gap place with shielding cavity at dividing plate and to be filled with and to shield cotton, dividing plate can be avoided with shielding cavity to be connected the leakage signal in gap, shielding leak detection device is set in little shielding cavity, shielding in the little shielding cavity of Real-Time Monitoring can reveal situation, thus carry out in time repairing and management and control.
Accompanying drawing explanation
Fig. 1 is the ultra broadband shielded enclosure power-supply filter plan structure figure of the utility model embodiment;
Fig. 2 is the ultra broadband shielded enclosure power-supply filter structure chart of the utility model embodiment.
[main element symbol description]
1, housing;
2, upper cover plate;
3, dividing plate;
4, shielding is cotton;
5, leak detection device is shielded;
6, ripple layer is inhaled;
7, insulating barrier;
8, feedthrough capacitor;
9, FERRITE CORE;
10, ferrocart core magnetic core;
11, inner cap;
12, enclosing cover.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, a kind of ultra broadband shielded enclosure power-supply filter that embodiment of the present utility model provides, comprise housing 1, upper cover plate 2, N number of dividing plate 3 and N number of filtering components and parts, described upper cover plate 2 and the suitable formation shielding cavity of housing 1, described N number of dividing plate 3 is arranged in filtering chamber and shielding cavity is divided into N-1 little shielding cavity, described dividing plate 3 is connected gap place and is filled with and shields cotton 4 with shielding cavity, shielding leak detection device 5 is provided with in described little shielding cavity, the inwall of described housing 1 and the inwall of upper cover plate 2 are disposed with suction ripple layer 6 and insulating barrier 7, two plate faces of described dividing plate 3 are all disposed with and inhale ripple layer 6 and insulating barrier 7, N be more than or equal to 1 integer, N number of filtering components and parts are positioned at N-1 little shielding cavity successively and are fixed on successively on N number of dividing plate 3.
Preferably, described housing outer surface is provided with leakage alarm, and described leakage alarm is connected with described shielding leak detection device 5.
Preferably, described filtering components and parts comprise feedthrough capacitor 8 and inductance, described inductance comprises interconnective FERRITE CORE 9 and ferrocart core magnetic core 10, the other end of described FERRITE CORE 9 is connected with the output of the feedthrough capacitor 8 of described filtering components and parts, and the other end of described ferrocart core magnetic core 10 is connected with the stiff end of the feedthrough capacitor 8 of adjacent filtering components and parts.
Preferably, described filtering components and parts comprise feedthrough capacitor 8 and inductance, described inductance is FERRITE CORE 9 or ferrocart core magnetic core 10, one end of described inductance is connected with the output of the feedthrough capacitor 8 of described filtering components and parts, and the other end of described inductance is connected with the stiff end of the feedthrough capacitor 8 of adjacent filtering components and parts.
Preferably, described filtering components and parts comprise the capacitance core group X1 that take organic film as medium; At least one take organic film as the capacitance core group Y2 of medium, is arranged at the side of described capacitance core group X1; At least one inductance coil L, is arranged at the side of described capacitance core group X1; Described capacitance core group Y2, inductance coil L are connected with capacitance core group X1 by wire.
Preferably, N be more than or equal to 2 integer.
Preferably, described upper cover plate 2 comprises inner cap 11 and enclosing cover 12, and described inner cap 11 is welded on casing of filter 1, and the outside that described enclosing cover 12 is positioned at inner cap 11 is fixed on housing.
Preferably, described housing is metal shell.
Concrete, as shown in Figure 2, a kind of ultra broadband shielded enclosure power-supply filter provided of the utility model embodiment comprises housing 1 and enclosing cover, inner cap, four pieces of dividing plates 3, shielding cavity be divide into three little shielding cavities by four pieces of dividing plates 3, divide into multiple little shielding cavity, effectively intercepted surface-creeping w ave and be transferred to filter output from filter input end.Dividing plate is connected gap place and is filled with and shields cotton 4 with shielding cavity, effectively can be connected gap to dividing plate with shielding cavity provides shielding protection, avoids the signal disturbing of each little shielding cavity.Shielding leak detection device 5 is provided with in little shielding cavity, can the leakage situation of effective detectable signal, thus facilitate management and control is carried out to ultra broadband shielded enclosure power-supply filter.Inhale ripple layer 6 and be arranged on the inner surface of each shielding cavity of casing of filter 1 and the inner surface of inner cap; Insulating barrier 7 is arranged on the surface of inhaling ripple layer 6.Inhale ripple layer 6 and effectively can absorb the surface-creeping w ave transmitted along casing of filter inner surface, thus greatly promote the insertion loss value of shielded enclosure filter at high band.
Filtering components and parts comprise inductance and feedthrough capacitor 8, and inductance comprises FERRITE CORE 9 and ferrocart core magnetic core 10, and the shielding cavity that inductance is placed on casing of filter 1 is inner; Feedthrough capacitor 8 is arranged on casing of filter or dividing plate 3.
Inductance comprises FERRITE CORE and ferrocart core magnetic core, effectively can take into account the insertion loss characteristic of shielded enclosure filter in high band and low-frequency range, meet the high insertion loss requirement of filter at full frequency band.When feedthrough capacitor effectively can avoid high frequency, capacitor pin, on the impact of filter high-frequency insertion loss, improves filter in the insertion loss requirement of high band, can take into account the requirement of filter big current in addition, is also convenient to install simultaneously.
Inner cap is welded on casing of filter, both ensure that the high insertion loss requirement of overall filter, has also met the screening effectiveness requirement in micro-wave screening room or darkroom.Filter enclosing cover rivet is arranged on casing of filter, effectively can improve the aesthetic measure of shielded enclosure filter.
Composition graphs 1 and Fig. 2, after suction ripple layer has been installed in this shielded enclosure power source filter shell, effectively can avoid the surface wave effect in casing of filter, this filter is made to have working band wide, the advantage that insertion loss is high, frequency application scope can reach 40GHz from 14kHz, and insertion loss can reach the requirement of 100dB.This ultra broadband shielded enclosure power-supply filter also has high-power feature, the electric current that ultra broadband shielded enclosure power-supply filter can pass through can reach more than 200A, both ensure that shielded enclosure or darkroom are to the requirement of screening effectiveness, also can meet the demand of powering to powerful device in shielded enclosure or darkroom.
In such scheme, have employed the design of shielded enclosure power source filter shell warehouse separated type, apply feedthrough capacitor, the surface of each shielding cavity in shielded enclosure power source filter shell inside and shielded enclosure power-supply filter inner cap is arranged inhales ripple layer, effective obstruct and absorb the surface-creeping w ave that shielded enclosure power-supply filter occurs in high-frequency band filter enclosure interior, thus improve the working frequency range of shielded enclosure power-supply filter, improve the insertion loss value of shielded enclosure power-supply filter at work full frequency band, and effectively can add the rated working current value of shielded enclosure power-supply filter, and to be connected gap place with shielding cavity at dividing plate and to be filled with and to shield cotton, dividing plate can be avoided with shielding cavity to be connected the leakage signal in gap, shielding leak detection device is set in little shielding cavity, shielding in the little shielding cavity of Real-Time Monitoring can reveal situation, thus carry out in time repairing and management and control.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a ultra broadband shielded enclosure power-supply filter, it is characterized in that, comprise housing, upper cover plate, N number of dividing plate and N number of filtering components and parts, described upper cover plate and the suitable formation shielding cavity of housing, described N number of dividing plate is arranged in filtering chamber and shielding cavity is divided into N-1 little shielding cavity, described dividing plate is connected gap place and is filled with and shields cotton with shielding cavity, shielding leak detection device is provided with in described little shielding cavity, the inwall of described housing and the inwall of upper cover plate are disposed with suction ripple layer and insulating barrier, two plate faces of described dividing plate are all disposed with and inhale ripple layer and insulating barrier, N be more than or equal to 1 integer, N number of filtering components and parts are positioned at N-1 little shielding cavity successively and are fixed on N number of dividing plate successively, described housing outer surface is provided with leakage alarm, described leakage alarm is connected with described shielding leak detection device.
2. ultra broadband shielded enclosure power-supply filter according to claim 1, it is characterized in that, described filtering components and parts comprise feedthrough capacitor and inductance, described inductance comprises interconnective FERRITE CORE and ferrocart core magnetic core, the other end of described FERRITE CORE is connected with the output of the feedthrough capacitor of described filtering components and parts, and the other end of described ferrocart core magnetic core is connected with the stiff end of the feedthrough capacitor of adjacent filtering components and parts.
3. ultra broadband shielded enclosure power-supply filter according to claim 1, it is characterized in that, described filtering components and parts comprise feedthrough capacitor and inductance, described inductance is FERRITE CORE or ferrocart core magnetic core, one end of described inductance is connected with the output of the feedthrough capacitor of described filtering components and parts, and the other end of described inductance is connected with the stiff end of the feedthrough capacitor of adjacent filtering components and parts.
4. ultra broadband shielded enclosure power-supply filter according to claim 1, is characterized in that, described filtering components and parts comprise the capacitance core group X1 that take organic film as medium; At least one take organic film as the capacitance core group Y2 of medium, is arranged at the side of described capacitance core group X1; At least one inductance coil L, is arranged at the side of described capacitance core group X1; Described capacitance core group Y2, inductance coil L are connected with capacitance core group X1 by wire.
5. the ultra broadband shielded enclosure power-supply filter according to Claims 1-4 any one, is characterized in that, N be more than or equal to 2 integer.
6. ultra broadband shielded enclosure power-supply filter according to claim 5, it is characterized in that, described upper cover plate comprises inner cap and enclosing cover, and described inner cap is welded on casing of filter, and the outside that described enclosing cover is positioned at inner cap is fixed on housing.
7. ultra broadband shielded enclosure power-supply filter according to claim 1, is characterized in that, described housing is metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520235274.9U CN204498078U (en) | 2015-04-17 | 2015-04-17 | Ultra broadband shielded enclosure power-supply filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520235274.9U CN204498078U (en) | 2015-04-17 | 2015-04-17 | Ultra broadband shielded enclosure power-supply filter |
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| Publication Number | Publication Date |
|---|---|
| CN204498078U true CN204498078U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520235274.9U Expired - Fee Related CN204498078U (en) | 2015-04-17 | 2015-04-17 | Ultra broadband shielded enclosure power-supply filter |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359866A (en) * | 2017-07-11 | 2017-11-17 | 西安交通大学 | A kind of integral type low-pass filtering module |
| CN107395153A (en) * | 2017-07-11 | 2017-11-24 | 西安交通大学 | A kind of self-shielding type low-pass filtering module |
| CN107681989A (en) * | 2017-10-20 | 2018-02-09 | 江苏瑞牧电子科技有限公司 | Feed-through capacitor formula power-supply filter and screened room |
| CN107681237A (en) * | 2017-10-20 | 2018-02-09 | 成都美数科技有限公司 | Adjustable type composite filter cavity |
| CN107820383A (en) * | 2017-10-20 | 2018-03-20 | 成都美数科技有限公司 | Combined adjustable type composite filter cavity |
| CN108365831A (en) * | 2018-04-23 | 2018-08-03 | 青岛云路新能源科技有限公司 | Power-supply filter and its manufacturing method |
| CN111327285A (en) * | 2020-04-13 | 2020-06-23 | 中国电子科技集团公司第九研究所 | Broadband high-power EMI filter for new energy automobile |
| CN111785518A (en) * | 2020-07-10 | 2020-10-16 | 重庆市药品技术审评认证中心 | Filter capacitor structure and filter with same |
| CN113691226A (en) * | 2021-08-24 | 2021-11-23 | 上海埃德电子股份有限公司 | On-line repairing method for power filter with failure of shielding facility |
-
2015
- 2015-04-17 CN CN201520235274.9U patent/CN204498078U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359866A (en) * | 2017-07-11 | 2017-11-17 | 西安交通大学 | A kind of integral type low-pass filtering module |
| CN107395153A (en) * | 2017-07-11 | 2017-11-24 | 西安交通大学 | A kind of self-shielding type low-pass filtering module |
| CN107681989A (en) * | 2017-10-20 | 2018-02-09 | 江苏瑞牧电子科技有限公司 | Feed-through capacitor formula power-supply filter and screened room |
| CN107681237A (en) * | 2017-10-20 | 2018-02-09 | 成都美数科技有限公司 | Adjustable type composite filter cavity |
| CN107820383A (en) * | 2017-10-20 | 2018-03-20 | 成都美数科技有限公司 | Combined adjustable type composite filter cavity |
| CN108365831A (en) * | 2018-04-23 | 2018-08-03 | 青岛云路新能源科技有限公司 | Power-supply filter and its manufacturing method |
| CN111327285A (en) * | 2020-04-13 | 2020-06-23 | 中国电子科技集团公司第九研究所 | Broadband high-power EMI filter for new energy automobile |
| CN111785518A (en) * | 2020-07-10 | 2020-10-16 | 重庆市药品技术审评认证中心 | Filter capacitor structure and filter with same |
| CN113691226A (en) * | 2021-08-24 | 2021-11-23 | 上海埃德电子股份有限公司 | On-line repairing method for power filter with failure of shielding facility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191217 Address after: 430014 A room, eight floor, building A, Riverview building, Jiang'an District, Wuhan, Hubei Patentee after: Wuhan jieweite machine room Engineering Co., Ltd Address before: 430014 A room, eight floor, building A, Riverview building, Jiang'an District, Wuhan, Hubei Patentee before: Liang Yucheng |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20210417 |
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| CF01 | Termination of patent right due to non-payment of annual fee |