CN202949690U - Shielding structure with a large number of strong and weak electricity pipelines in and out of large shielding space - Google Patents
Shielding structure with a large number of strong and weak electricity pipelines in and out of large shielding space Download PDFInfo
- Publication number
- CN202949690U CN202949690U CN 201220585173 CN201220585173U CN202949690U CN 202949690 U CN202949690 U CN 202949690U CN 201220585173 CN201220585173 CN 201220585173 CN 201220585173 U CN201220585173 U CN 201220585173U CN 202949690 U CN202949690 U CN 202949690U
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- shielding
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- weak electricity
- shielding space
- cable
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Abstract
The utility model relates to a shielding structure with a large number of strong and weak electricity pipelines in and out of large shielding space and aims at providing the shielding structure which is simple in structure and low in cost so as to improve the shielding effectiveness and reduce effects of electromagnetic radiation on staff in the shielding space. The technical scheme includes that the shielding structure comprises a cable trench and the shielding space defined by a shielding case, and is characterized in that an integrated metal shielding case for accommodating cables is arranged in the cable trench positioned outside the shielding case. The shielding structure is suitable for human body electromagnetic protection in special industries (such as military, aerospace and meteorological radar stations).
Description
Technical field
The utility model relates to a kind of electromagnetic armouring structure, and particularly a kind of a large amount of strong and weak electricity pipeline passes in and out the shielding construction of large shielding space, mainly is applicable to the human body electromagnetic protection of special trade (such as military affairs, Aero-Space, thunder head etc.).
Background technology
For a small amount of cable, adopt filter to be aided with again and substantially can satisfy shielding requirements after other means are processed, but for a large amount of cables, when the 10kV power cable was especially arranged, as adopting filter, cost was high, shared space requirement is also large, sometimes reaches unacceptable degree.In large shielding space situation, except electronic equipment many, the turnover pipeline how outside, also having an outstanding feature is exactly that the staff is many, open-assembly time is long, how to realize that the human body electromagnetic protection is a problem demanding prompt solution at this moment.
Summary of the invention
The technical problems to be solved in the utility model is: the shielding construction that a kind of simple in structure, large shielding space of a large amount of strong and weak electricity pipelines turnover that cost is low is provided for the problem of above-mentioned existence, to improve screening effectiveness, reduce electromagnetic radiation to the impact of staff in shielding space.
The technical scheme that the utility model adopts is: the shielding construction of the large shielding space of a large amount of strong and weak electricity pipeline turnover, comprise cable trough, and by the shielding space that shield shell surrounds, it is characterized in that: be positioned at the integral type metallic shield that the outer cable trough of shield shell is provided for placing cable.
Be positioned at the outer cable trough of shield shell, extend far zone field 20 ~ 50m in addition away from radiation source one end.
Described shield shell is provided with the just waveguide that passes of cable of a prescription, and this waveguide two ends lay respectively at the inside and outside both sides of shield shell.
When described cable enters with the cable trough of radome and shielding space, armature of cable layer and screen electrical connection and ground connection.
Described radome adopts the hot-dip galvanizing sheet steel of 1.2mm thickness to make.
Described radome comprises that cross section is the base plate of interior crimping channel steel type, and is riveted on the cover plate on two interior crimpings of base plate, and weld seam is processed with the tin envelope, lays conductive liner between described interior crimping and cover plate.
The mode of lap riveting is adopted in the connection of adjacent bottom plates, middle pad conductive liner, and local tin envelope is processed.
The beneficial effects of the utility model are: the cable trough of the utility model outside being positioned at shield shell arranges the integral type metallic shield, guarantee that simultaneously this cable trough extends far zone field 20-50m in addition away from radiation source one end, thereby greatly reduced the radiation that is coupled into by cable; In addition, be provided with the just waveguide that passes of cable of a prescription on shield shell, further filtering partial radiation, thereby guaranteed screening effectiveness, solve tranmitting frequency and be the human body electromagnetic protection problem in the large shielding space situation of a large amount of strong and weak electricity pipelines turnover in the near field of 1-3GHz, guaranteed the safety of staff in shielding space.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the cross-sectional view of radome in the utility model.
Embodiment
As shown in Figure 1, the present embodiment comprises cable trough 1, and by the shielding space 3 that metal screen case 2 surrounds, wherein, is positioned at the integral type metallic shield 4 that shield shell 2 outer cable trough 1 whole process are provided for placing shielded type cable 6; When described cable 6 enters with the cable trough 1 of radome 4, need armour and screen electrical connection and ground connection with cable 6, and when entering shielding space 3, armour and the screen of cable 6 is electrically connected also ground connection again.
As shown in Figure 2, in this example, described radome 4 adopts the hot-dip galvanizing sheet steel bending of 1.2mm thickness to make, comprise that cross section is the base plate 4-1 of interior crimping channel steel type, and the cover plate 4-3 of crimping (adopting ail gun to realize fixing) on two interior crimping 4-2 of base plate 4-1, arrange between described interior crimping 4-2 and cover plate 4-3 that conductive liner 4-4 makes shielding processing, process with the tin envelope after the seam portion staking between adjacent two cover plate 4-3 simultaneously.
Be positioned at the outer cable trough 1 of shield shell 2, extend far zone field 20-50m in addition away from radiation source one end, make as far as possible the radiation amplitude peak ground minimizing that is coupled into by cable; Simultaneously, cable trough 1 is dark as far as possible, and the electromagnetic radiation of near field is masked by soil absorption and metallic shield 4 mostly; In addition, the just waveguide 5 that passes of cable of one prescription is set on shield shell 2, this waveguide two ends lay respectively at the inside and outside both sides of shield shell 2, cable 6 enters in shielding space 3 after passing this waveguide (screen of this place's cable and waveguide shield gasket), so that further filtering partial radiation, thereby reach permissible value.
The present embodiment is after experimental test, and is respond well, and screening effectiveness is more than or equal to 50dB.
Claims (7)
1. the shielding construction of the large shielding space of a large amount of strong and weak electricity pipelines turnover, comprise cable trough (1), and by the shielding space (3) that shield shell (2) surrounds, it is characterized in that: be positioned at the integral type metallic shield (4) that the outer cable trough (1) of shield shell (2) is provided for placing cable.
2. the shielding construction of the large shielding space of a large amount of strong and weak electricity pipeline turnover according to claim 1, is characterized in that: be positioned at the outer cable trough (1) of shield shell (2), extend far zone field 20 ~ 50m in addition away from radiation source one end.
3. a large amount of strong and weak electricity pipeline according to claim 1 and 2 passes in and out the shielding construction of large shielding space, it is characterized in that: described shield shell (2) is provided with the just waveguide (5) that passes of cable of a prescription, and this waveguide two ends lay respectively at the inside and outside both sides of shield shell (2).
4. a large amount of strong and weak electricity pipeline according to claim 1 and 2 passes in and out the shielding construction of large shielding space, it is characterized in that: described cable enters the cable trough (1) of band radome (4) and during shielding space (3), the armature of cable layer is electrically connected also ground connection with screen.
5. a large amount of strong and weak electricity pipeline according to claim 1 and 2 passes in and out the shielding construction of large shielding space, it is characterized in that: described radome (4) adopts the hot-dip galvanizing sheet steel of 1.2mm thickness to make.
6. a large amount of strong and weak electricity pipeline according to claim 5 passes in and out the shielding construction of large shielding space, it is characterized in that: described radome (4) comprises that cross section is the base plate of interior crimping channel steel type (4-1), and being riveted on cover plate (4-3) on two interior crimpings (4-2) of base plate (4-1), between described interior crimping (4-2) and cover plate (4-3), arranging shielding is with conductive liner (4-4).
7. a large amount of strong and weak electricity pipeline according to claim 6 passes in and out the shielding construction of large shielding space, it is characterized in that: the mode of lap riveting is adopted in the connection of adjacent bottom plates (4-1), middle pad conductive liner (4-4), the processing of local tin envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585173 CN202949690U (en) | 2012-11-08 | 2012-11-08 | Shielding structure with a large number of strong and weak electricity pipelines in and out of large shielding space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585173 CN202949690U (en) | 2012-11-08 | 2012-11-08 | Shielding structure with a large number of strong and weak electricity pipelines in and out of large shielding space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949690U true CN202949690U (en) | 2013-05-22 |
Family
ID=48425366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220585173 Expired - Lifetime CN202949690U (en) | 2012-11-08 | 2012-11-08 | Shielding structure with a large number of strong and weak electricity pipelines in and out of large shielding space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202949690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948641A (en) * | 2017-04-05 | 2017-07-14 | 中国人民解放军61489部队 | The steel frame shock insulation shielding integrative protection system and method that a kind of band limit resets |
-
2012
- 2012-11-08 CN CN 201220585173 patent/CN202949690U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948641A (en) * | 2017-04-05 | 2017-07-14 | 中国人民解放军61489部队 | The steel frame shock insulation shielding integrative protection system and method that a kind of band limit resets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
|
| CX01 | Expiry of patent term |