CN107949263B - Electromagnetic shielding method for building - Google Patents
Electromagnetic shielding method for building Download PDFInfo
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- CN107949263B CN107949263B CN201711377073.2A CN201711377073A CN107949263B CN 107949263 B CN107949263 B CN 107949263B CN 201711377073 A CN201711377073 A CN 201711377073A CN 107949263 B CN107949263 B CN 107949263B
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- stainless steel
- building
- steel wire
- wire mesh
- shielding
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0001—Rooms or chambers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0001—Rooms or chambers
- H05K9/0003—Shielded walls, floors, ceilings, e.g. wallpaper, wall panel, electro-conductive plaster, concrete, cement, mortar
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0001—Rooms or chambers
- H05K9/0005—Shielded windows
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a building electromagnetic shielding method, which comprises the following steps: selecting a stainless steel wire mesh with a corresponding mesh number; coating a first bonding mortar layer on the building wall; laying the stainless steel wire mesh on the first bonding mortar layer; coating a second bonding mortar layer on the stainless steel wire mesh; overlapping the stainless steel wire mesh with the stainless steel wire meshes on the periphery of the stainless steel wire mesh; checking whether holes exist on the surface of the stainless steel screen and the lap joint of the stainless steel screen; the shielding window and the shielding door are in lap joint with the stainless steel wire meshes around the shielding window and the shielding door; burying the stainless steel wire mesh close to the bottom of the building, and connecting the stainless steel wire mesh or the upper and lower stainless steel rows at the bottom of the building into the building ground in a multipoint grounding mode; the external trunk optical fiber enters the building through a stainless steel interface piece fixed on the wall surface of the building; and the power line and the water pipe enter the building through the metal pipeline. The invention can realize the electromagnetic shielding function of buildings and effectively reduce the shielding cost.
Description
Technical Field
The invention relates to an electromagnetic protection technology, in particular to a building electromagnetic shielding method.
Background
The large-caliber radio telescope has extremely high system sensitivity, and electromagnetic interference of commercial electronic equipment in a station site can influence radio astronomical observation and deteriorate observation data, so that the radio astronomical observation is effectively shielded and protected aiming at a radio astronomical station building, and the influence of the electronic equipment in the building on the radio astronomical observation is greatly relieved. And because the number of building facilities is large, the single building is huge, and the cost of the traditional high-performance electromagnetic protection is extremely high, the shielding method which aims at the low cost of the building research and has the engineering implementability has important engineering application value.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an electromagnetic shielding method for a building, so as to effectively reduce the electromagnetic shielding cost of the building.
The invention relates to a building electromagnetic shielding method, which comprises the following steps:
step S1, selecting stainless steel wire meshes with corresponding meshes according to the electromagnetic shielding requirements of buildings;
step S2, a first bonding mortar layer is smeared on the building wall;
step S3, paving the stainless steel wire mesh on the first bonding mortar layer;
step S4, coating a second bonding mortar layer on the stainless steel wire mesh;
step S5, overlapping the stainless steel wire mesh with the stainless steel wire meshes on the periphery of the stainless steel wire mesh;
step S6, the step S2-5 is repeatedly executed until the stainless steel screen is fully paved on the surface of the building, whether holes exist on the surface of the stainless steel screen and the lap joint of the stainless steel screen is checked, and if holes exist on the surface of the stainless steel screen and the lap joint of the stainless steel screen, the stainless steel screen with the corresponding size is cut and repaired;
step S7, mounting a shielding window and a shielding door on a building, and lapping the shielding window and the shielding door with a stainless steel wire mesh around the shielding window and the shielding door;
step S8, burying the stainless steel wire net close to the bottom of the building, and connecting the stainless steel wire net at the bottom of the building or the stainless steel rows at the upper and lower layers into the building site in a multipoint grounding mode;
step S9, enabling an external trunk optical fiber to enter a building through a stainless steel interface piece fixed on the wall surface of the building, wherein the stainless steel interface piece is in conductive connection with the stainless steel wire mesh; and
and step S10, enabling the power line and the water pipe to enter a building through a metal pipeline, wherein the metal pipeline is buried underground.
In the electromagnetic shielding method for buildings, the method further comprises: and step S11, installing the integrated heat-insulation board on the wall surface of the building so that the stainless steel wire mesh is not exposed outdoors.
In the above electromagnetic shielding method for buildings, the step S4 further includes: and reserving first width parts at the four sides of the stainless steel wire mesh respectively, wherein the first width parts are not covered by the first and second bonding mortar layers, and reserving second width parts at the edges of the stainless steel wire mesh, which are close to the door and the window, around the door and the window of the building, wherein the edges of the stainless steel wire mesh are not covered by the first and second bonding mortar layers.
In the above electromagnetic shielding method for construction, the width of the first width portion is at least 10cm, and the width of the second width portion is 60 cm.
In the above electromagnetic shielding method for buildings, the step S5 includes:
step S51, fixing the lower stainless steel row at the lap joint between the stainless steel screens of the building wall surface, and pressing the upper stainless steel row at the lap joint between the stainless steel screens;
and step S52, aligning the lower stainless steel row and the upper stainless steel row and fixedly connecting the lower stainless steel row and the upper stainless steel row with the stainless steel screen.
In the electromagnetic shielding method for the building, the interval between the fixing points of the lower stainless steel row and the upper stainless steel row is not less than 10 cm.
Further, in the step S8, the buried depth of the stainless steel screen near the bottom of the building is greater than 1m, and the interval between the grounding points of the stainless steel screen near the bottom of the building or the upper and lower stainless steel rows is not less than 10 m.
Further, in the step S9, the stainless steel interface includes: and the stainless steel plates are fixed on the building wall surface, and a plurality of stainless steel pipes are vertically welded on the stainless steel plates and penetrate through the building wall body from front to back.
In the electromagnetic shielding method for the building, the installation position of the stainless steel interface piece is close to the building weak electric well.
Further, in the step S10, the buried depth of the metal pipeline is greater than 1.5 m.
By adopting the technical scheme, the stainless steel wire mesh is laid on the wall surface of the building, the surface of the building is coated with the adhesive mortar, the stainless steel wire mesh is lapped by the stainless steel rows, the shielding window, the shielding door and the stainless steel wire mesh are lapped in a matching manner, and in addition, the stainless steel interface piece, the metal pipeline and the like are adopted to realize building wire inlet, so that the electromagnetic shielding function of the building is realized, and the shielding cost is effectively reduced. The invention also adopts the integrated heat-insulating plate to ensure that the stainless steel wire mesh is not exposed outside, thereby prolonging the service life of the shielding material and playing a role in heat insulation.
Drawings
Fig. 1 is an exploded schematic view of an electromagnetic shielding structure of a building, which is implemented by using an electromagnetic shielding method of the building of the present invention;
fig. 2 is a schematic diagram of overlapping a plurality of stainless steel wire meshes in an electromagnetic shielding method for buildings according to the invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the invention, namely, a building electromagnetic shielding method, includes the following steps:
step S1, selecting a stainless steel wire mesh 1 with a proper mesh number according to the electromagnetic shielding requirement of a building; here, a layer of cement (normally all) is required to be smeared on the building wall surface; in the embodiment, according to the electromagnetic shielding requirement of 30dB of QTT site buildings, the shielding material can be a 30-mesh stainless steel wire mesh 1;
step S2: a layer of bonding mortar 2 is smeared at the installation position of the stainless steel wire mesh 1 of the building wall surface;
step S3: paving a stainless steel wire mesh 1 with the width of 2 meters on the surface of the bonding mortar 2; after the adhesive mortar 2 is smeared, cutting a stainless steel wire mesh 1 with a proper length immediately and paving the stainless steel wire mesh on the surface of the adhesive mortar 2;
step S4: immediately smearing a layer of bonding mortar 2 on the surface of the stainless steel wire mesh 1, bonding each stainless steel wire mesh 1 to a building wall through the double-layer bonding mortar 2 (the bonding mortar 2 is suitable for fixing the stainless steel wire meshes 1 of 50 meshes or below), reserving at least 10cm of adhesive mortar 2 at each of four sides of the stainless steel wire mesh 1 so as to facilitate the overlapping of the stainless steel wire meshes 1, and reserving 60cm of adhesive mortar 2 at the edges of the stainless steel wire meshes 1 adjacent to the doors and windows around the building so as not to cover the stainless steel wire meshes 1;
step S5: overlap joint stainless steel net 1 rather than stainless steel net 1 all around each other specifically includes:
step S51, fixing the lower stainless steel row 3 at the lap joint between the stainless steel meshes 1 of the building wall surface, and pressing the upper stainless steel row 4 at the lap joint between the stainless steel meshes 1; here, the overlapping width of the stainless steel wire mesh 1 is required to be at least 10cm (as shown in fig. 2);
step S52, aligning and effectively fixing the lower stainless steel row 3 and the upper stainless steel row 4 together, so that the two stainless steel wire meshes 1 positioned between the lower stainless steel row 3 and the upper stainless steel row 4 are fixedly lapped together; the number of the fixed points of the lower stainless steel row 3 and the upper stainless steel row 4 is not less than 10 cm/piece, so that the stainless steel wire meshes 1 are well pressed; in the embodiment, two ends of the lower stainless steel row 3 are provided with holes of 5.2mm for fixing on the building wall surface, and two ends of the upper stainless steel row 4 are provided with holes of 9.5mm for sinking into the caps of screws, so as to realize the compression of the stainless steel rows; holes with the diameter of 4.5mm are uniformly distributed on the upper stainless steel row 4 and the lower stainless steel row 3 so as to rivet the upper stainless steel row 4 and the lower stainless steel row 3 with the stainless steel wire net 1;
step S6, repeating the steps S2-S5 until the surface of the building is fully paved with the stainless steel screen 1, checking whether holes exist on the surface of the stainless steel screen 1 and the lap joint of the stainless steel screen 1, and if so, cutting the stainless steel screen 1 with a proper size for repairing to ensure that no holes exist;
step S7: installing a shielding window and a shielding door on a building, and effectively overlapping the shielding window and the shielding door with a 60cm stainless steel wire mesh 1 reserved around the shielding window and the shielding door so as to ensure the effective shielding of the building door and window;
step S8: burying a stainless steel wire mesh 1 close to the bottom of a building, wherein the buried depth is more than 1 m; the stainless steel wire net 1 or the stainless steel row at the bottom of the building is required to be connected into the building ground, a multi-point grounding mode is adopted, and the number of grounding points is not less than 10 m/number;
step S9: the external trunk optical fiber enters the building through the stainless steel interface piece fixed on the wall surface of the building to provide a network for the building; the stainless steel interface piece includes: the stainless steel plate is fixed on the wall surface of a building, and the stainless steel pipes are vertically welded on the stainless steel plate and penetrate through the wall surface of the building in the front and back directions, wherein the size of the stainless steel plate is 60cm multiplied by 40cm, holes are drilled on the four sides of the stainless steel plate, the stainless steel plate is fixed on the wall surface, the fixed points are required to be spaced by 10 cm/piece, and the inner diameter of each stainless steel pipe is smaller than 28mm (for example, a 28mm waveguide pipe is adopted to realize the shielding effectiveness of 100 MHz-; in addition, the installation position of the stainless steel interface piece is required to be close to the building weak current well, and the stainless steel interface piece is ensured to be in conductive connection with the stainless steel screen 1 during installation.
Step S10: enabling power lines, water pipes and the like to enter a building through metal pipelines, wherein the metal pipelines are required to be buried, and the buried depth is more than 1.5 m;
step S11: the integrated heat-insulation board 5 (existing) is installed on the wall surface of a building by adopting a bonding and riveting method so as to ensure that the stainless steel wire mesh 1 is not exposed outdoors, thereby prolonging the service life of the shielding material and playing a role in heat insulation; to this end, an electromagnetic shielding structure as shown in fig. 1 is formed on the building wall surface.
The invention can be applied to the field of radio astronomy with extremely high electromagnetic environment requirements and the technical field of information leakage prevention; in addition, for the occasions with severe electromagnetic environment, the electromagnetic radiation protection device can greatly relieve strong electromagnetic radiation outside the building and greatly reduce the damage of the electromagnetic radiation to workers.
The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (1)
1. A method of building electromagnetic shielding, the method comprising the steps of:
step S1, selecting stainless steel wire meshes with corresponding meshes according to the electromagnetic shielding requirements of buildings;
step S2, a first bonding mortar layer is smeared on the building wall;
step S3, paving the stainless steel wire mesh on the first bonding mortar layer;
step S4, coating a second adhesive mortar layer on the stainless steel wire mesh, reserving first width parts on four sides of the stainless steel wire mesh respectively and not covered by the first adhesive mortar layer and the second adhesive mortar layer, reserving second width parts on edges of the stainless steel wire mesh, which are close to doors and windows, around the doors and windows of the building and not covered by the first adhesive mortar layer and the second adhesive mortar layer, wherein the width of the first width parts is at least 10cm, and the width of the second width parts is 60 cm;
step S5, overlapping the stainless steel wire mesh with the stainless steel wire meshes on the periphery of the stainless steel wire mesh;
step S6, the step S2-5 is repeatedly executed until the stainless steel screen is fully paved on the surface of the building, whether holes exist on the surface of the stainless steel screen and the lap joint of the stainless steel screen is checked, and if holes exist on the surface of the stainless steel screen and the lap joint of the stainless steel screen, the stainless steel screen with the corresponding size is cut and repaired;
step S7, mounting a shielding window and a shielding door on a building, and lapping the shielding window and the shielding door with a stainless steel wire mesh around the shielding window and the shielding door;
step S8, burying the stainless steel wire net close to the bottom of the building, and connecting the stainless steel wire net close to the bottom of the building or the stainless steel rows on the upper and lower layers into the building ground in a multipoint grounding mode, wherein the buried depth of the stainless steel wire net close to the bottom of the building is more than 1m, and the interval between grounding points of the stainless steel wire net close to the bottom of the building or the stainless steel rows on the upper and lower layers is not less than 10 m;
step S9, the external trunk optical fiber enters the building through a stainless steel interface fixed on the wall surface of the building, wherein the stainless steel interface is in conductive connection with the stainless steel wire mesh, and the stainless steel interface comprises: the stainless steel plate is fixed on the wall surface of a building, and a plurality of stainless steel pipes which are vertically welded on the stainless steel plate and penetrate through the wall surface of the building from front to back are arranged, the inner diameter of each stainless steel pipe is smaller than 28mm, and the installation position of each stainless steel interface piece is close to the building light current well;
step S10, enabling a power line and a water pipe to enter a building through a metal pipeline, wherein the metal pipeline is buried, and the buried depth of the metal pipeline is more than 1.5 m; and
step S11, mounting the integrated heat-insulation board on the wall surface of a building so that the stainless steel wire mesh is not exposed outdoors;
wherein the step S5 includes:
step S51, fixing the lower stainless steel row at the lap joint between the stainless steel screens of the building wall surface, and pressing the upper stainless steel row at the lap joint between the stainless steel screens;
and step S52, aligning the lower stainless steel row and the upper stainless steel row and fixedly connecting the lower stainless steel row and the upper stainless steel row with the stainless steel wire mesh, wherein the interval between the fixed points of the lower stainless steel row and the upper stainless steel row is not less than 10 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711377073.2A CN107949263B (en) | 2017-12-19 | 2017-12-19 | Electromagnetic shielding method for building |
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| CN201711377073.2A CN107949263B (en) | 2017-12-19 | 2017-12-19 | Electromagnetic shielding method for building |
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| CN107949263A CN107949263A (en) | 2018-04-20 |
| CN107949263B true CN107949263B (en) | 2020-03-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108824712B (en) * | 2018-07-16 | 2024-06-14 | 中国科学院新疆天文台 | Building pipeline shield assembly that leaks |
| CN109098479B (en) * | 2018-09-26 | 2020-07-03 | 吉林省泰华电子股份有限公司 | Construction process of light electromagnetic shielding chamber |
| CN110552441A (en) * | 2019-10-11 | 2019-12-10 | 中国科学院新疆天文台 | Electromagnetic shielding curtain wall applied to building |
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| CN2673053Y (en) * | 2003-12-26 | 2005-01-19 | 李勇 | Electromagnetic shielding device for house |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0291591B1 (en) * | 1987-05-20 | 1992-03-04 | Shimizu Construction Co., Ltd. | Electromagnetic shield structure for windows of buildings |
| CN103359997B (en) * | 2013-02-04 | 2014-12-10 | 青岛理工大学 | Nano foam concrete, reinforced thermal insulation wallboard and preparation method of wallboard |
| CN105275106A (en) * | 2015-11-05 | 2016-01-27 | 中国建筑材料科学研究总院 | Anti-electromagnetic radiation building |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148656A (en) * | 1995-06-29 | 1997-04-30 | 清水建设株式会社 | Electromagnetic shielded building |
| JP2007056668A (en) * | 1999-12-28 | 2007-03-08 | Yoshinori Maekawa | Exterior type electromagnetic wave shielding building |
| CN2673053Y (en) * | 2003-12-26 | 2005-01-19 | 李勇 | Electromagnetic shielding device for house |
| CN102635240A (en) * | 2012-04-18 | 2012-08-15 | 浙江省建工集团有限责任公司 | Construction method of indoor anti-static shielding mesh system |
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