CN102943534B - Electromagnetic radiation integral shielding structure for large space - Google Patents
Electromagnetic radiation integral shielding structure for large space Download PDFInfo
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- CN102943534B CN102943534B CN201210443204.3A CN201210443204A CN102943534B CN 102943534 B CN102943534 B CN 102943534B CN 201210443204 A CN201210443204 A CN 201210443204A CN 102943534 B CN102943534 B CN 102943534B
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Abstract
The invention relates to an electromagnetic radiation integral shielding structure for a large space, and aims to provide an electromagnetic radiation integral shielding structure for a large space, which solves the large space for electromagnetic radiation protection very difficult problem. The integral shielding structure adopts the technical scheme that the integral shielding structure is suitable for the large space. The integral shielding structure is characterized in that the large space adopts a shielding structure which is provided with two integral layers and three local layers; in the first shielding layer, a reinforcing net of the building structure of the large space is set into grids smaller than or equal to 200mm*200mm, and reinforcing bars are welded into a whole at every one meter; in the second shielding layer, shielding steel plates with thickness of 2 to 2.5mm are respectively arranged on the front surface, the back surface, the left surface, the right surface, the upper surface and the lower surface of the inside of the large space and define a shielding casing; and in the third shielding layer, working equipment is installed in the large space, and the working equipment is respectively provided with a metal machine cabinet which is subject to grounding treatment. The integral shielding structure is suitable for human body electromagnetic protection structures.
Description
Technical field
The present invention relates to a kind of human body electromagnetic protection structure, especially a kind of electromagnetic radiation bulk shielding structure being applicable to large space.Be applicable to special trade, as command hall or site work halls such as military affairs, Aero-Space, thunder heads.
Background technology
Electromagnetic radiation field is generally divided near field and far zone field.Centered by field source, the region in 1 wave-length coverage, is commonly referred near field.Otherwise the region beyond 1 wave-length coverage, is commonly referred to far zone field.The electromagnetic field intensity of near field is more much bigger than far zone field, and electromagnetic radiation impacts human body and damage main near field.And the accurate Calculation of shield effectiveness is difficult.Domestic have 30m
2electromagnetic protection case below area, this case adopt goldleaf face, space six is sticked, but the method cost is high, switch gate time excessively thin goldleaf can occur obvious trill and vibration allow people like a hen on a hot girdle for a good while; Adopt this method obviously unrealistic to the bulk shielding of large space, and due to space large, movable personnel are many, electronic equipment is many, and turnover pipeline is many, thus to large space to carry out electromagnetic protection particularly difficult, the case that domestic successful solves is few.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Problems existing, a kind of electromagnetic radiation bulk shielding structure being applicable to large space that is convenient, advantage of lower cost of constructing is provided, to solve a difficult problem for electromagnetic radiation protection in large space, make it meet the relevant electromagnetic protection requirement of country, staff works long hours and without the need to wearing protective site clothing in protective zone.
The technical solution adopted in the present invention is: a kind of electromagnetic radiation bulk shielding structure being applicable to large space, is characterized in that: the large space in the near field that tranmitting frequency is 1 ~ 3GHz about building area 1000 square meter adopts the overall two-layer shielding construction adding partial threelayer;
First floor shields, and the grid being less than or equal to 200mm × 200mm is arranged to by the building structure reinforcing bar net of described large space, and every one meter by reinforcement welding integrally;
The second layer shield, in described large space all around upper and lower six the thick shielding steel plate of 2 ~ 2.5mm is all set and encloses formation shield shell;
Third layer shields, and described large space is built with working equipment, and working equipment all has the metal cabinet through grounding.
The sole plate of described large space arranges the steel plate of grade beam or even pre-buried 50mm × 50mm × 5mm, steel plate spacing is less than 400mm × 400mm, both all flush with sole plate surface, and above both with described shielding Interal fixation, shield above steel plate and be provided with ground decoration layer;
Screen layer is provided with inside the surrounding brick wall of described large space, this screen layer is made up of keel shoe and the shielding steel plate be laid on keel shoe, described keel shoe comprises the shielding main joist that interval 1500mm vertically arranges, and and main joist is connected, the shielding rider keel of interval 900mm lateral arrangement, and shielding surface of steel plate is provided with inner decoration sheet;
The end face of described large space is from top to bottom provided with shielding main beam and shielding clamped beam successively, and shielding steel plate is installed in shielding clamped beam lower surface, below shielding steel plate, furred ceiling is housed.
Described large space has metallic shield door and metal window net, and metallic shield door, metal window net are all done two places with building structure reinforcing bar net and be symmetrically welded fixing.
Be provided with airduct in described large space, airduct is transferred through shielding waveguide at turnover large space place; Described airduct adopts metal plate airduct or the both sides inside and outside turnover large space all arrange the long metal bellows of 5 ~ 10m and are electrically connected between metal bellows.
Be provided with the stair be communicated with other layers in described large space, these stair are metal staircase, and are provided with metallic shield door at landing place, and stair more than platform coated shielding steel plate is also connected with whole shield shell.
Described large space is built with indoor apparatus of air conditioner, and large space peripheral hardware has air-conditioner outdoor unit, is connected with air-conditioning liquid in-out tracheae between indoor set and off-premises station, and air-conditioning liquid in-out tracheae is through the shield shell of air-conditioning liquid wave conduit turnover large space.
The invention has the beneficial effects as follows: the present invention adopts overall bilayer to add partial threelayer shielding construction, structure is simple, easy construction and cost is lower, effectively can solve a bulk shielding difficult problem for large space indoor electromagnetic radiation protection, its electromagnetic protection meeting country " electromagnetic radiation protection specifies " (GB8702-88) is required and bulk shielding electromagnet shield effect >=50dB; Microwave irradiation power density≤10 μ W/cm2, makes staff work long hours in protective zone and without the need to wearing protective site clothing.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the structural representation at sole plate and brick wall place in the present invention.
Fig. 3 is the structural representation of end face in the present invention.
Fig. 4 is the structure chart at end face lintel place in the present invention.
Fig. 5 is that in the present invention, brick wall is connected the structural representation with end face.
Fig. 6 is that in the present invention, pillar is connected the structural representation with end face.
Fig. 7 is the structure chart at stair place in the present invention.
Fig. 8, Fig. 9 are the structure chart of airduct turnover place in the present invention.
Figure 10 is the structural representation that hollow of the present invention transfers in drain pipe.
Detailed description of the invention
The present embodiment is a kind of electromagnetic radiation bulk shielding structure being applicable to large space, to solve a bulk shielding difficult problem for the large space electromagnetic radiation protection near field that tranmitting frequency is 1 ~ 3GHz about building area 1000 square meter.
This enforcement have employed the thinking that overall bilayer adds partial threelayer shielding, and detailed way is as follows:
First the intrinsic grid of building structure reinforcing bar net is utilized to do first floor shielding design, with reference to specification XQ2-2000 requirement, by the grid needing the external wall structure steel-bar arrangement of shielding space to become to be not more than 200mm × 200mm, and every about 1 meter by reinforcing bar spot welding integrally.First floor shielding effect be limited, but spend cost very little.
The second layer shields, and also can claim primary shield, in upper and lower all around six faces of the large space interior wall that need shield, adopts the shielding steel plate 1 that 2mm ~ 2.5mm is thick, encloses the shield shell that formation one is airtight.Select the thick shielding steel plate 1 of 2mm ~ 2.5mm except radiation field is comparatively strong, mainly because large space (working hall etc.) area is larger, according to goldleaf, at closing time or breeze easily make it rustle, and adopt certain thickness shielding steel plate 1, not only can avoid this phenomenon, the demand that (the hanging) that also solve finishing and equipment installs simultaneously.Antirust treatment all carried out by shielding steel plates 1 all in this example.
The detailed description of the invention of second layer shielding is as follows:
As shown in Figure 1 and Figure 2, the sole plate 3 of large space is done the steel plate 2 of grade beam 9 or pre-buried 50mm × 50mm × 5mm, steel plate 2 spacing 400mm × 400mm, its light plate 2 and the ground device utilizing reinforcement foundation to do are welded to each other by 3 ~ 5 meters of intervals and are communicated with once (specification YD011).Grade beam 9 or steel plate 2 flush with sole plate 3, and upper surface and described shielding steel plate 1 are fixed, and shielding steel plate 1 thickness that this place selects is 2.5mm, above shielding steel plate 1 be ground decoration layer 4(can fill concrete and reserve cable trench).
Screen layer is provided with inside the surrounding brick wall 5 of large space, this screen layer is made up of keel shoe and the thick shielding steel plate 1 of 2mm be laid on keel shoe, described keel shoe comprises the shielding main joist 6 that interval 1500mm vertically arranges, and and main joist is connected, the shielding rider keel 7 of interval 900mm lateral arrangement, and shielding steel plate 1 surface is equiped with inner decoration sheet 8.
As shown in Fig. 3 ~ Fig. 6, the end face 10 of large space is from top to bottom provided with shielding main beam 11 and shielding clamped beam 12 successively, shielding main beam 11 is fixed on end face 10 through suspension rod 15, and shielding clamped beam 12 installs the thick shielding steel plate 1 of 2mm below, installs furred ceiling 14 below shielding steel plate 1.Liang Erhang can wrap in shielding steel plate 1 lintel place, also can paste Liang Erhang as furred ceiling, depending on deck-molding.Now it should be noted that top may have airduct to lift, projector equipment is also had even to have blower fan to lift, the requirement of load-bearing will be thought about in construction, from the equipment installed position determined carry out support be welded to shielding steel plate 1 and making balanced welding suspension bracket so that the installation of follow-up equipment.The position crossing pillar 16 must bag post and going, and pillar 16 is contracted out shield ranges.
The door passing in and out large space in the present embodiment all adopts special-purpose metal shield door 18, and window then adopts metal window net, and metallic shield door 18 is done two the reliable of place's symmetry with metal window net and building structure reinforcing bar net and welded.Equipotential bonding plate can be drawn on the net from reinforced concrete structure for subsequent use before erection of doors and windows.
As shown in Figure 7, in large space, the stair 17 be communicated with other layers are provided with in this example, stair 17 adopt metal staircase, and landing place is provided with the metallic shield door 18 for splitting shielding area, and stair 17 the first half (more than platform) coated shielding steel plate 1 is also connected with whole shield shell.
As shown in Figure 8, Figure 9, the shielding waveguide 19 that the airduct 13 passing in and out shield shell all should make 300 ~ 400mm long is transferred.In this example, airduct 13 adopts metal plate airduct or the both sides inside and outside turnover shield shell all arrange the long metal bellows of 5 ~ 10m and are electrically connected between metal bellows.
In the present embodiment at large space built with indoor apparatus of air conditioner 20, large space peripheral hardware has air-conditioner outdoor unit 21, be connected with air-conditioning liquid in-out pipe 22 between indoor set and off-premises station, air-conditioning liquid in-out tracheae 22 passes in and out the shield shell of large space through air-conditioning liquid wave conduit 23, sees Figure 10.
In large space, the strong and weak electricity vertical shaft of vertical connection also adopts shielding steel plate 1 to seal vertical shaft and large space inner shield housing and forms a complete entirety.
Third layer shields, and the facilities such as the work rack in large space, utilize the intrinsic shielding action of its metal cabinet, can be regarded as local third layer and shields and carry out ground connection, play Anti-Jamming, ensures the energy normal table work of equipment.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned citing, those skilled in the art, within the scope of the invention, the change made, change add or replace, all should belong to protection scope of the present invention.
Claims (5)
1. be applicable to an electromagnetic radiation bulk shielding structure for large space, it is characterized in that the large space in the near field that tranmitting frequency is 1 ~ 3GHz about building area 1000 square meter adopts the overall two-layer shielding construction adding partial threelayer;
First floor shields, and the grid being less than or equal to 200mm × 200mm is arranged to by the building structure reinforcing bar net of described large space, and every one meter by reinforcement welding integrally;
The second layer shield, in described large space all around upper and lower six the thick shielding steel plate (1) of 2 ~ 2.5mm is all set and encloses formation shield shell;
Third layer shields, and described large space is built with working equipment, and working equipment all has the metal cabinet through grounding;
Described large space comprises the end face (10) of the sole plate (3) of large space, the surrounding brick wall (5) of large space and large space, and concrete structure is:
The sole plate (3) of described large space arranges the steel plate (2) of grade beam (9) or even pre-buried 50mm × 50mm × 5mm, steel plate spacing is less than 400mm × 400mm, both all flush with sole plate (3) surface, and fix with described shielding steel plate (1) above both, shielding steel plate (1) top is provided with ground decoration layer (4);
Surrounding brick wall (5) inner side of described large space is provided with screen layer, this screen layer is made up of keel shoe and the shielding steel plate (1) be laid on keel shoe, described keel shoe comprises the shielding main joist (6) that interval 1500mm vertically arranges, and and main joist is connected, the shielding rider keel of interval 900mm lateral arrangement (7), and shielding steel plate (1) surface is provided with inner decoration sheet (8);
The end face (10) of described large space is from top to bottom provided with shielding main beam (11) and shielding clamped beam (12) successively, and shielding steel plate (1) is installed in shielding clamped beam (12) lower surface, below shielding steel plate, furred ceiling (14) is housed.
2. the electromagnetic radiation bulk shielding structure being applicable to large space according to claim 1, it is characterized in that: described large space has metallic shield door (18) and metal window net, metallic shield door, metal window net are all done two places with building structure reinforcing bar net and are symmetrically welded fixing.
3. the electromagnetic radiation bulk shielding structure being applicable to large space according to claim 1, is characterized in that: be provided with airduct (13) in described large space, and airduct (13) is transferred through shielding waveguide (19) at turnover large space place; Described airduct (13) adopts metal plate airduct or the both sides inside and outside turnover large space all arrange the long metal bellows of 5 ~ 10m and are electrically connected between metal bellows.
4. the electromagnetic radiation bulk shielding structure being applicable to large space according to claim 1, it is characterized in that: in described large space, be provided with the stair (17) be communicated with other layers, these stair are metal staircase, and being provided with metallic shield door (18) at landing place, stair more than platform coated shielding steel plate (1) is also connected with whole shield shell.
5. the electromagnetic radiation bulk shielding structure being applicable to large space according to claim 1, it is characterized in that: described large space is built with indoor apparatus of air conditioner (20), large space peripheral hardware has air-conditioner outdoor unit (21), be connected with air-conditioning liquid in-out tracheae (22) between indoor set and off-premises station, air-conditioning liquid in-out tracheae (22) is through the shield shell of air-conditioning liquid wave conduit (23) turnover large space.
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| CN201210443204.3A CN102943534B (en) | 2012-11-08 | 2012-11-08 | Electromagnetic radiation integral shielding structure for large space |
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| CN201210443204.3A CN102943534B (en) | 2012-11-08 | 2012-11-08 | Electromagnetic radiation integral shielding structure for large space |
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| CN102943534B true CN102943534B (en) | 2015-05-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674977A (en) * | 2013-11-27 | 2015-06-03 | 贵阳铝镁设计研究院有限公司 | Electromagnetic shielding wall and construction method thereof |
| CN105089169A (en) * | 2014-05-21 | 2015-11-25 | 江苏大全封闭母线有限公司 | Generator neutral wall shielding plate structure |
| CN105332438B (en) * | 2015-11-30 | 2017-07-18 | 成都市工业设备安装公司 | Welded type High Performance Shielding room construction technology |
| CN106251911B (en) * | 2016-07-22 | 2018-07-27 | 葛加君 | The method of building intelligence system multidigit pre-control electromagnetism Leibo interference |
| CN108149811A (en) * | 2018-01-16 | 2018-06-12 | 中铁建设集团有限公司 | A kind of construction safety system for shielding electromagnetic radiation |
| CN109386157A (en) * | 2018-12-10 | 2019-02-26 | 中国人民解放军军事科学院国防工程研究院 | A kind of device for being integrally electromagnetically shielded to ground important goal |
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