CN105071321A - Method for improving electromagnetic shielding performance of multi-path cable sealing device - Google Patents
Method for improving electromagnetic shielding performance of multi-path cable sealing device Download PDFInfo
- Publication number
- CN105071321A CN105071321A CN201510508016.8A CN201510508016A CN105071321A CN 105071321 A CN105071321 A CN 105071321A CN 201510508016 A CN201510508016 A CN 201510508016A CN 105071321 A CN105071321 A CN 105071321A
- Authority
- CN
- China
- Prior art keywords
- mud
- plasticity
- electromagnetic shielding
- sealing device
- performance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a method for improving the electromagnetic shielding performance of a multi-path cable sealing device, and the method comprises the steps: continuously putting plastic conductive mud (6) and plastic magnetically conductive mud (7) in a gap (5) between separated rubber modules in a direction perpendicular to the length direction in the multi-path cable sealing device which consists of a metal frame (1), the rubber modules (2), a metal partitioning plate (3), and a compressing assembly (4); enabling a cable shielding layer (8) to be closely attached to the plastic conductive mud (6) and plastic magnetically conductive mud (7); and enabling the metal frame (7) to be grounded. Therefore, the whole device becomes a continuous conductive body and a magnetically conductive body, thereby achieving electromagnetic shielding. The device can obtain better electromagnetic shielding performance. Compared with a common metal foil, the device can greatly improve the electromagnetic shielding performance. Moreover, the device can achieve the effective shielding of full-band electromagnetic waves. Compared with a mode of employing conductive rubber and magnetically conductive rubber, the method is low in cost, and maintains the original strength, sealing performance, explosion-proof performance and waterproof performance.
Description
Technical field
The present invention relates to a kind of method improving electromagnet shield effect, be specifically related to a kind of method improving multipath cable sealing device electromagnet shield effect, belong to electromagnetic shielding field.
Background technology
Multipath cable sealing device be mainly used in special industry to the wall-through hole of cable, through-flooring hole, armour-piercing plate hole, wear the sealing in cabin hole, its characteristic is high watertightness performance, high air-tightness, the high capability of antidetonance and possess fire protecting performance.And some special dimensions also require capability of electromagnetic shielding, as the control room to electromagnetic interference sensitivity, machine room etc.
The principle of electromagnetic shielding be by metal shield by electromagnetic reflection and the far zone field absorbing radiation-screening interference source, namely shield the Electric and magnetic fields component that field source produces simultaneously.The principle of electric screen is that the interference produced by interference source ends at the shield be made up of good conductor under the condition ensureing good earth.Therefore, ground connection is good and select good conductor to be two key factors that can electric screen work as shield.The principle of magnetic screen is the flux path by shield, disturbing magnetic field being provided to low magnetic resistance, thus disturbing magnetic field is shunted, thus select the closure casing such as material and design box, shell of the high magnetic permeabilities such as steel, iron, permalloy to become two key factors of magnetic screen.
Current multipath cable sealing device is wrapped on the metal screen layer of shielded type cable mainly through aluminium foil or Copper Foil, then allows the method for whole device ground connection to realize the object of electromagnetic shielding, as the PE module of Roxtec company.The EMC module of Brattberg company, the method taked is cut from centre in direction perpendicular to axial direction for the elastic caoutchouc module in multipath cable sealing device, cutting end face wraps up Copper Foil or aluminium foil, and allow Copper Foil or aluminium foil contact with cable shield when installing, then ground connection realizes electromagnetic shielding.90db can be arrived for frequency electromagnetic waves screening effectiveness.
Use the mode of Copper Foil or aluminium foil, can not form positive continuous print conductive barrier, screening effectiveness reduces.And the existence of micro gap between metal forming, cause leakage, effective shielding of the microwave being greater than 20GHz can not be realized.Not magnetic conduction in addition, can not realize effective shielding of the low-frequency electromagnetic wave for below 1MHz.
Other mode adopts conductive rubber and magnetic conduction rubber to realize better electromagnetic shielding, this mode can realize higher electromagnet shield effect undoubtedly, but this mode cost is high, manufacturing process is complicated, should be and will obtain higher conductivity and magnetic conductivity, rubbery intensity reduces, and sealing property, the capability of antidetonance and fire protecting performance are deteriorated.
Summary of the invention
In order to solve the problem, the object of this invention is to provide a kind of method improving multipath cable sealing device electromagnet shield effect, can realize for below 1MHz low-frequency electromagnetic wave and be greater than effective shielding of microwave of 20GHz, and with low cost, negative effect is not caused to intensity, sealing property, the capability of antidetonance, fire protecting performance.In order to realize this object, the technical scheme that this invention is taked as described later.
A kind of method improving multipath cable sealing device electromagnet shield effect, in the multipath cable sealing device be made up of metal framework (1), rubber module (2), metallic spacer layer plate (3), hold down assembly (4), plasticity conducting mud (6) and plasticity magnetic conduction mud (7) is filled continuous in the space (5) between the rubber module separated perpendicular to length direction, allow the frequency of cable cover layer (8) and plasticity conducting mud (6) and plasticity magnetic conduction mud (7) fluid-tight engagement, and allow metal framework ground connection.Whole like this device becomes a continuous conduction body and magnetic conductor, realizes electromagnetic shielding.
It is 0 ~ 30mm that described plasticity conducting mud (6) fills length, and the filling length of plasticity magnetic conduction mud (7) is 0 ~ 30mm.Total length is 2 ~ 30mm.
When mounted, plasticity plasticity conducting mud and plasticity magnetic conduction can not affect the sealing property of device, and because its plasticity, when compressing, the good combination of cable shield, metal framework and metallic spacer layer plate can be formed at, ensure monolithic conductive and magnetic property.
Innovation of the present invention is, the method using plasticity conducting mud and plasticity magnetic conduction mud to fill improves multipath cable sealing device capability of electromagnetic shielding, the benefit brought is: can obtain higher electromagnet shield effect, and compared with common metal paper tinsel, electromagnet shield effect improves greatly.And the electromagnetic effective shielding of full frequency band can be realized.Compare with magnetic conduction rubber with use conductive rubber, cost is low, retains original intensity, sealing property, the capability of antidetonance and fire protecting performance.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of multipath cable sealing device, and (1) is metal framework, and (2) are rubber module, and (3) are metallic spacer layer plate, and (4), for holding down assembly, (6) are plasticity conducting mud, and (7) plasticity magnetic conduction mud, (8) are cable shield.
Fig. 2 is rubber module and metallic spacer layer plate schematic diagram, and (2) are rubber module, and (5) are that (6) are plasticity conducting mud, (7) plasticity magnetic conduction mud from the space between the rubber module separated perpendicular to length direction.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
With reference to attached Fig. 1 and 2, in the multipath cable sealing device be made up of metal framework (1), rubber module (2), metallic spacer layer plate (3), hold down assembly (4), fill 5mm length plasticity conducting mud (6) and 5mm length plasticity magnetic conduction mud (7) continuous in the space (5) between the rubber module separated perpendicular to length direction.Allow the frequency of cable cover layer (8) and plasticity conducting mud (6) and plasticity magnetic conduction mud (7) fluid-tight engagement during installation, and allow metal framework ground connection.Whole like this device becomes a continuous conduction body and magnetic conductor, realizes electromagnetic shielding.Detect according to GB/T12190-2006 " method of measurement of EM shielded room screening effectiveness ", the electromagnetic wave of 200KHz, magnetic screen usefulness can reach more than 70db.1MHz ~ 20GHz electromagnetic shielding effectiveness can reach more than 90db, and 50GHz electromagnetic shielding effectiveness can reach more than 60db.
Plasticity conducting mud (6) and plasticity magnetic conduction mud (7) can select only to use wherein one to realize electric screen or magnetic screen.
Claims (2)
1. one kind is improved the method for multipath cable sealing device electromagnet shield effect, it is characterized in that: in the multipath cable sealing device be made up of metal framework (1), rubber module (2), metallic spacer layer plate (3), hold down assembly (4), plasticity conducting mud (6) and plasticity magnetic conduction mud (7) is filled continuous in the space (5) between the rubber module separated perpendicular to length direction, allow the frequency of cable cover layer (8) and plasticity conducting mud (6) and plasticity magnetic conduction mud (7) fluid-tight engagement, and allow metal framework ground connection.
2. a kind of method improving multipath cable sealing device electromagnet shield effect according to claim 1, it is characterized in that: it is 0 ~ 30mm that described plasticity conducting mud (6) fills length, the filling length of plasticity magnetic conduction mud (7) is 0 ~ 30mm, and total filling length is 2 ~ 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508016.8A CN105071321A (en) | 2015-08-19 | 2015-08-19 | Method for improving electromagnetic shielding performance of multi-path cable sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508016.8A CN105071321A (en) | 2015-08-19 | 2015-08-19 | Method for improving electromagnetic shielding performance of multi-path cable sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105071321A true CN105071321A (en) | 2015-11-18 |
Family
ID=54500634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510508016.8A Pending CN105071321A (en) | 2015-08-19 | 2015-08-19 | Method for improving electromagnetic shielding performance of multi-path cable sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105071321A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204592A (en) * | 2017-06-29 | 2017-09-26 | 中建安装工程有限公司 | One kind is used for the sealed device of cable or pipeline through-wall hole and encapsulating method |
| CN109058599A (en) * | 2018-08-21 | 2018-12-21 | 中车大连机车车辆有限公司 | Wall-penetrating type pipeline connecting device |
| IT201700106475A1 (en) * | 2017-09-22 | 2019-03-22 | Wallmax S R L | CABLE MODULE AND CABLE SYSTEM |
| CN112350250A (en) * | 2020-12-01 | 2021-02-09 | 武汉众成四电技术有限公司 | Split-type cable house entrance hole plugging device capable of being assembled |
| CN112653046A (en) * | 2020-12-07 | 2021-04-13 | 中车唐山机车车辆有限公司 | Cross line hole sealing device, carriage and rail vehicle |
| SE1951510A1 (en) * | 2019-12-19 | 2021-06-20 | Roxtec Ab | Transit for passing at least one cable and/or at least one metallic pipe |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294403A (en) * | 2000-12-06 | 2001-05-09 | 东南大学 | Film method for shielding colour CRT from geomagnetism |
| CN101031196A (en) * | 2006-02-28 | 2007-09-05 | 江南造船(集团)有限责任公司 | Cable penetrating technology for electromagnetic shielding cabin |
| CN201018753Y (en) * | 2007-03-14 | 2008-02-06 | 北京超凡蜂芯高新科技发展有限公司 | Composite interlayer electromagnetic shielding chamber |
| WO2008069716A1 (en) * | 2006-12-08 | 2008-06-12 | Mct Brattberg Ab | Insert block half, and a sealing system comprising said insert block half |
| WO2010071530A1 (en) * | 2008-12-19 | 2010-06-24 | Mtc Brattberg Ab | Layer for use in combination with an insert half, and insert half |
| CN201827525U (en) * | 2010-10-20 | 2011-05-11 | 上海怡博船务有限公司 | Sealing device |
| CN102412055A (en) * | 2010-09-26 | 2012-04-11 | 曾祥军 | Amorphous alloy transformer with adjustable capacitance |
| CN202503150U (en) * | 2010-09-17 | 2012-10-24 | 烙克赛克有限公司 | Modularization connector for tube or cable, assembly and connector system |
| CN102796856A (en) * | 2012-08-01 | 2012-11-28 | 山东科技大学 | Quenching device for controlling induction hardening flux leakage of workpiece groove and quenching method for quenching device |
| WO2015065256A1 (en) * | 2013-10-31 | 2015-05-07 | Mct Brattberg Ab | Insert block half |
-
2015
- 2015-08-19 CN CN201510508016.8A patent/CN105071321A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294403A (en) * | 2000-12-06 | 2001-05-09 | 东南大学 | Film method for shielding colour CRT from geomagnetism |
| CN101031196A (en) * | 2006-02-28 | 2007-09-05 | 江南造船(集团)有限责任公司 | Cable penetrating technology for electromagnetic shielding cabin |
| WO2008069716A1 (en) * | 2006-12-08 | 2008-06-12 | Mct Brattberg Ab | Insert block half, and a sealing system comprising said insert block half |
| CN201018753Y (en) * | 2007-03-14 | 2008-02-06 | 北京超凡蜂芯高新科技发展有限公司 | Composite interlayer electromagnetic shielding chamber |
| WO2010071530A1 (en) * | 2008-12-19 | 2010-06-24 | Mtc Brattberg Ab | Layer for use in combination with an insert half, and insert half |
| CN202503150U (en) * | 2010-09-17 | 2012-10-24 | 烙克赛克有限公司 | Modularization connector for tube or cable, assembly and connector system |
| CN102412055A (en) * | 2010-09-26 | 2012-04-11 | 曾祥军 | Amorphous alloy transformer with adjustable capacitance |
| CN201827525U (en) * | 2010-10-20 | 2011-05-11 | 上海怡博船务有限公司 | Sealing device |
| CN102796856A (en) * | 2012-08-01 | 2012-11-28 | 山东科技大学 | Quenching device for controlling induction hardening flux leakage of workpiece groove and quenching method for quenching device |
| WO2015065256A1 (en) * | 2013-10-31 | 2015-05-07 | Mct Brattberg Ab | Insert block half |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204592A (en) * | 2017-06-29 | 2017-09-26 | 中建安装工程有限公司 | One kind is used for the sealed device of cable or pipeline through-wall hole and encapsulating method |
| IT201700106475A1 (en) * | 2017-09-22 | 2019-03-22 | Wallmax S R L | CABLE MODULE AND CABLE SYSTEM |
| WO2019057908A1 (en) * | 2017-09-22 | 2019-03-28 | Wallmax S. R. L. | Cable transit module and cable transit system |
| CN109058599A (en) * | 2018-08-21 | 2018-12-21 | 中车大连机车车辆有限公司 | Wall-penetrating type pipeline connecting device |
| SE1951510A1 (en) * | 2019-12-19 | 2021-06-20 | Roxtec Ab | Transit for passing at least one cable and/or at least one metallic pipe |
| SE543838C2 (en) * | 2019-12-19 | 2021-08-10 | Roxtec Ab | Transit for passing at least one cable and/or at least one metallic pipe |
| CN112350250A (en) * | 2020-12-01 | 2021-02-09 | 武汉众成四电技术有限公司 | Split-type cable house entrance hole plugging device capable of being assembled |
| CN112653046A (en) * | 2020-12-07 | 2021-04-13 | 中车唐山机车车辆有限公司 | Cross line hole sealing device, carriage and rail vehicle |
| CN112653046B (en) * | 2020-12-07 | 2022-04-15 | 中车唐山机车车辆有限公司 | Cross line hole sealing device, carriage and rail vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105071321A (en) | Method for improving electromagnetic shielding performance of multi-path cable sealing device | |
| KR102441507B1 (en) | Disposition method of electronic device and electromagnetic interference suppressor | |
| US8692137B2 (en) | Noise dampening energy efficient tape and gasket material | |
| TW200744441A (en) | Electromagnetic shielding device and method of fabricating the same | |
| CN203905757U (en) | Electromagnetic-shielding door window structure | |
| CN103235166B (en) | Hand-hole type capacitive voltage divider | |
| DE60125376D1 (en) | IMPLEMENTING DEVICE | |
| CN201725985U (en) | Strong electromagnetic interference resistant socket | |
| CN204229919U (en) | A kind of shielded cable of electronic computer | |
| CN204859879U (en) | Multipath cable sealing device with magnetism blocking function | |
| CN204886073U (en) | Use metal forming to realize electromagnetic shield's multipath cable sealing device | |
| CN104409144A (en) | Flat cable with electromagnetic shielding layer | |
| CN104753600A (en) | Metal packaging type optical receiving and transmitting module | |
| CN203350304U (en) | Radio frequency test box | |
| KR101181808B1 (en) | Insert blocks for shielding electromagnetic wave | |
| CN201742680U (en) | Housing device for electromagnetic compatibility of electronic circuits | |
| CN204030948U (en) | A kind of DC-DC modular power source insulation, shielding gasket | |
| KR101323749B1 (en) | Cable sealing system for shielding electromagnetic wave | |
| CN203934270U (en) | Shielding through wall device and the shield electric machine of rotating shaft | |
| KR101223097B1 (en) | Cable penetration sealing system for shielding electromagnetic wave | |
| CN210534202U (en) | Shielding box for testing electronic element | |
| CN204859880U (en) | High electromagnetic shielding effectiveness's multipath cable sealing device based on conductive rubber | |
| CN102858143B (en) | A kind of interface shielding sealing device and screening arrangement | |
| CN204859883U (en) | Drive circuit shield assembly | |
| CN206472445U (en) | Far control the electromagnetic screen of box in a kind of power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 213012 Changzhou Province, the Clock Tower District, the New Gate Street, the new gate town, No., No. 1 Applicant after: Jiangsu five letter new materials Polytron Technologies Inc Address before: 213012 Changzhou Province, the Clock Tower District, the New Gate Street, the new gate town, No., No. 1 Applicant before: JIANGSU WUXIN NEW MATERIAL TECHNOLOGY CO., LTD. |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151118 |