Shielded room and construction method thereof

Abstract

The invention relates to a shielding room and a construction method thereof. The shielding room comprises a main body wall, a shielding layer, a keel layer and a filler layer, the shielding layer and the main body wall are arranged at intervals; the keel layer is connected with the main body wall and the shielding layer, so that a cavity is formed between the main body wall and the shielding layer; the packing layer is arranged in the cavity; wherein pouring holes are formed in the shielding layer and used for pouring slurry into the cavity, so that the filler layer is formed. Compared with the prior art, the main body wall and the shielding layer are fixedly connected through the keel layer, the cavity is formed between the main body wall and the shielding layer, the filler layer which is dense enough is formed in the mode that pouring holes in the shielding layer are poured into the cavity, and the filler layer can reduce leakage of sound waves and electromagnetic waves; and moreover, the connection between the main body wall and the shielding layer is tighter, thereby effectively avoiding possible leakage at the joint, and being beneficial to improving the shielding performance of the shielding room.

Description

Technical Field

[0001] The invention relates to the technical field of shielding rooms, and in particular to a shielding room and a construction method thereof. Background Art

[0002] A shielded room is a closed space specially designed to isolate the internal and external electromagnetic environments. It can prevent external electromagnetic interference and also prevent internal electromagnetic waves from leaking out. In the development of modern science and technology, shielded rooms play an important role in many fields, such as electronic equipment testing, acoustic research, etc.

[0003] In some important fields, due to the needs of scientific research, safety protection, etc., the performance requirements of the shielding room are extremely high. For example, an environment with extremely low background noise is required, and the ability to attenuate electromagnetic waves at a specific frequency is required. The shielding room in the related art has some shortcomings in the connection between the shielding layer and the main structure. The connection between the shielding layer and the main structure is not tight and stable, which causes the vibration of the shielding layer steel plate, resulting in unsatisfactory shielding effect, noise leakage and other problems.

[0004] Therefore, it is necessary to develop a new shielding room and a construction method thereof to improve some of the above-mentioned problems existing in the relevant technology. Summary of the invention

[0005] The object of the present invention is to provide a shielding room and a construction method thereof, which can improve the connection tightness between the shielding layer and the main structure, reduce the leakage of sound waves and electromagnetic waves, and improve the shielding performance of the shielding room.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present invention provides a shielding room, comprising: a main wall, a shielding layer, a keel layer and a filling layer; the shielding layer is spaced apart from the main wall; the keel layer connects the main wall and the shielding layer to form a cavity between the main wall and the shielding layer; the filling layer is arranged in the cavity; wherein the shielding layer is provided with a casting hole for casting slurry into the cavity to form the filling layer.

[0008] Optionally, the shielding layer is also provided with exhaust holes.

[0009] Optionally, the exhaust hole and the casting hole are respectively located on two side edges of the shielding layer.

[0010] Optionally, the shielding layer is rectangular in shape, and the exhaust holes and the casting holes are respectively located at opposite corners of the shielding layer.

[0011] Optionally, the slurry of the filler layer includes cement, quartz sand, gypsum, inorganic powder and expansion agent in a weight ratio of 1:2.5-3.5:0.05:0.1-0.2:0.01.

[0012] The present invention provides a construction method of a shielding room, comprising the following steps:

[0013] S01: Construction forms a cavity between the main wall and the shielding layer;

[0014] S02: pouring slurry into the cavity through the pouring holes on the shielding layer;

[0015] S03: solidifying the slurry to form a filler layer.

[0016] Optionally, in step S02, the step of pouring slurry into the cavity through the pouring holes on the shielding layer further includes the following steps:

[0017] S21: exhausting air through the exhaust holes on the shielding layer during pouring;

[0018] S22: When the slurry overflows from the vent hole, the vent hole is blocked.

[0019] Optionally, the grouting pressure for pouring the slurry into the cavity is 0.2-0.4 MPa.

[0020] Optionally, after sealing the exhaust hole, the method further comprises the step of: continuing to inject the slurry for 10-20 seconds.

[0021] Compared with the prior art, the shielding room and the construction method thereof provided by the present invention have the following technical effects:

[0022] 1. The present invention uses a keel layer to fix the main wall and the shielding layer to each other and form a cavity between the two. A sufficiently dense filler layer is formed by pouring into the cavity through the pouring holes on the shielding layer. Not only can the filler layer itself reduce the leakage of sound waves and electromagnetic waves, but also the connection between the main wall and the shielding layer is made tighter, effectively avoiding possible leakage at the connection, which is beneficial to improving the shielding performance of the shielding room.

[0023] 2. The present invention simultaneously arranges casting holes and exhaust holes on the shielding layer, so that the cavity can discharge gas through the exhaust holes during the casting process, making the slurry distribution more uniform and dense, which is beneficial to improving the anti-leakage effect and connection tightness effect of the packing layer.

[0024] 3. The present invention provides a closed structure at the exhaust hole on the shielding layer to close the exhaust hole after the slurry is poured to a certain extent. When the slurry does not leak through the exhaust hole, the slurry is continuously injected at a certain grouting pressure, which is beneficial to a more uniform and dense distribution of the slurry and avoids the appearance of holes in the filler layer.

[0025] 4. The present invention forms slurry by mixing cement, quartz sand, gypsum, inorganic powder and expansion agent in a weight ratio of 1:2.5-3.5:0.05:0.1-0.2:0.01, so that the slurry has good fluidity and filling performance, which is conducive to forming a more uniform and dense filling layer.

[0026] 5. The present invention provides a thin steel plate shielding layer with greater pull-out resistance on a thinner floor as a restraining part of the slurry, so that the cavity grouting is dense without causing bulging of the thin steel plate. The structure is simple and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the shielding room in an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Keel layer; 101. first keel; 102. second keel; 103. third keel; 2. shielding layer; 3. casting hole; 4. exhaust hole; 5. cavity. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] The embodiment of the present invention provides a shielding room, referring to Figure 1 The shielding room includes: a main wall, a shielding layer 2, a keel layer 1 and a filler layer; the shielding layer 2 is spaced apart from the main wall; the keel layer 1 connects the main wall and the shielding layer 2 to form a cavity 5 between the main wall and the shielding layer 2; the filler layer is arranged in the cavity 5; wherein, a casting hole 3 is provided on the shielding layer 2 for casting slurry into the cavity 5 to form the filler layer.

[0032] In some specific embodiments, the material of the shielding layer 2 may be a metal electromagnetic shielding material, a polymer composite electromagnetic shielding material or a conductive electromagnetic shielding material, which is not limited in the present invention.

[0033] In some specific embodiments, the keel layer 1 includes a plurality of keels, and the plurality of keels are cross-connected and combined to form the cavity 5 having a parallelogram, other polygonal or circular cross-sectional shape through the main body walls and the shielding layer 2 on both sides.

[0034] In some specific embodiments, the parallelogram has an inner angle that is a right angle, that is, the cavity 5 is formed with a rectangular cross-section.

[0035] In some specific embodiments, the keel includes a first keel 101, a second keel 102, a third keel 103 and a fourth keel, the first keel 101 and the second keel 102 are arranged in parallel at intervals, and the third keel 103 and the fourth keel are arranged in a direction perpendicular to the first keel 101 and the second keel 102, so that the first keel 101, the second keel 102 and the third keel 103 and the fourth keel form the cavity 5 with a rectangular or square cross-section.

[0036] In other specific embodiments, referring to Figure 1 The keel includes a first keel 101, a second keel 102, a third keel 103 and a fourth keel. The first keel 101 and the second keel 102 are arranged in parallel with each other, and the third keel 103 and the fourth keel are arranged in a direction inclined to the first keel 101 and the second keel 102, so that the first keel 101, the second keel 102, the third keel 103 and the fourth keel form the cavity 5 with a parallelogram cross-section.

[0037] In other specific embodiments, referring to Figure 1 At least three of the keels are arranged along the first direction, and at least two of the keels are arranged along the second direction. There is a certain inclination angle between the first direction and the second direction, so that a plurality of cavities 5 with parallelogram cross-sectional shapes are formed between the keels.

[0038] In some specific embodiments, referring to Figure 1 The shape of the shielding steel plate is the same as the cross-sectional shape of the cavity 5 , and the shielding steel plate is connected to the side of the keel away from the main body wall to cover the cavity 5 .

[0039] In other specific embodiments, referring to Figure 1 The shielding steel plate is connected to the side of the keel away from the main body wall to cover the multiple cavities 5.

[0040] In some specific embodiments, the keel is arranged parallel to the main body wall, so that the keel layer 1 is parallel to the main body wall as a whole.

[0041] In some specific embodiments, the main wall may be a bottom wall, a top wall or a side wall of the main structure of the shielding room.

[0042] In some specific embodiments, the keel is arranged in a plane parallel to the length direction and the width direction of the main wall, so that the keel layer 1 is arranged on the top wall or under the bottom wall of the main structure of the shielding room.

[0043] In other specific embodiments, the keel is arranged in a plane parallel to the length direction and the height direction of the main wall, or in a plane formed by the width direction and the height direction, so that the keel layer 1 is arranged on the four side walls of the main structure of the shielding room.

[0044] In some specific embodiments, the keel is fixed by arranging shear wall embedded parts on the main wall.

[0045] In some specific embodiments, the shear wall embedded parts are welded to the keel.

[0046] In some specific embodiments, the keel and the shielding layer 2 are welded.

[0047] In some embodiments of the present invention, the shielding layer 2 is a thinner steel plate, and the thickness of the steel plate is 0.5-3 mm.

[0048] Specifically, the thickness of the steel plate may be 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.5 or 3.

[0049] In some embodiments of the present invention, referring to Figure 1 The shielding layer 2 is also provided with an exhaust hole 4.

[0050] In some embodiments of the present invention, referring to Figure 1 The exhaust hole 4 and the casting hole 3 are respectively located at the two side edges of the shielding layer 2.

[0051] In some specific embodiments, the shielding layer 2 is a rectangular plate-shaped part, and the exhaust holes 4 and the casting holes 3 are respectively located at two side edges of the shielding layer 2 in the length direction, or two side edges in the width direction.

[0052] In some specific embodiments, referring to Figure 1 The shielding layer 2 may be a parallelogram plate-shaped part, and the exhaust holes 4 and the casting holes 3 are respectively located at the two side edges of the bottom extension direction of the shielding layer 2, or the two side edges of the height extension direction.

[0053] In some specific embodiments, the shielding layer 2 may be a rectangular plate-shaped part, and the exhaust holes 4 and the casting holes 3 are respectively located at two side edges of the shielding layer 2 in a long extension direction, or two side edges in a wide extension direction.

[0054] In some embodiments of the present invention, referring to Figure 1 The shielding layer 2 is in the shape of a parallelogram, and the exhaust holes 4 and the casting holes 3 are respectively located at the diagonals of the shielding layer 2 .

[0055] In some embodiments of the present invention, referring to Figure 1 The shielding layer 2 is in a rectangular shape, and the exhaust holes 4 and the casting holes 3 are respectively located at the diagonals of the shielding layer 2 .

[0056] In some specific embodiments, the diagonal positions on the parallelogram shielding layer 2 may be positions where two acute angles are opposite to each other.

[0057] In other specific embodiments, referring to Figure 1 The diagonal positions on the parallelogram shielding layer 2 may be positions where two obtuse angles are opposite to each other.

[0058] In some other specific embodiments, the diagonals on the rectangular shielding layer 2 may be two positions opposite to each other at right angles.

[0059] In some specific embodiments, the casting hole 3 has a diameter of 30-70 mm.

[0060] In some specific embodiments, the diameter of the exhaust hole 4 is 60-100 mm.

[0061] Specifically, the diameter of the casting hole 3 may be 30, 40, 50, 60 or 70 mm.

[0062] Specifically, the diameter of the exhaust hole 4 may be 60, 70, 80, 90 or 100 mm.

[0063] In some embodiments of the present invention, the shielding layer 2 includes a closed structure, which is disposed at the exhaust hole 4 and is used to block the connection between the cavity 5 and the external space at the exhaust hole 4.

[0064] In some specific embodiments, the closed structure may be a plugging structure.

[0065] In some specific embodiments, the blocking material may be an organic blocking material or an inorganic blocking material.

[0066] In some specific embodiments, the plugging material increases the plugging performance by mixing epoxy resin polymer.

[0067] In some other specific embodiments, the plugging material may be a metal material, and the plugging material is welded to the hole wall of the exhaust hole 4 .

[0068] In some specific embodiments, the plugging material may be in a variable diameter shape so as to be easily embedded in the exhaust hole 4 .

[0069] In some specific embodiments, a shielding structure is additionally provided at the closed structure to achieve a shielding effect with the same performance at all positions on the shielding layer 2 .

[0070] In some specific embodiments, the shielding structure may be a plate-shaped part made of the same material and thickness as the shielding layer 2 to cover the exhaust hole 4 or the casting hole 3 .

[0071] In some specific embodiments, the closing structure may be a sealing by the cooperation of parts, such as the cooperation of bolts and screw holes, so as to achieve high operating efficiency and a dense sealing effect.

[0072] In some specific embodiments, another closed structure is disposed at the casting hole 3 .

[0073] In some embodiments of the present invention, the slurry of the filler layer includes cement, quartz sand, gypsum, inorganic powder and expansion agent, and the weight ratio is 1:2.5-3.5:0.05:0.1-0.2:0.01.

[0074] Specifically, the weight ratio of the cement to the quartz sand may be 1:2.5, 1:3 or 1:3.5.

[0075] Specifically, the weight ratio of the cement to the inorganic powder may be 1:0.1, 1:0.15 or 1.

[0076] In some embodiments of this invention, the slurry adopts non-shrinkage grouting material with a water-to-material ratio of 0.1-0.15 to ensure the fluidity and strength of the slurry.

[0077] Specifically, the water-to-material ratio may be 0.1, 0.12, 0.13, 0.14 or 0.15.

[0078] An embodiment of the present invention provides a construction method of a shielding room, comprising the following steps:

[0079] S01: Construction to form a cavity 5 between the main wall and the shielding layer 2;

[0080] S02: pouring slurry into the cavity 5 through the pouring holes 3 on the shielding layer 2;

[0081] S03: solidifying the slurry to form a filler layer.

[0082] In some specific embodiments, before forming the cavity 5 between the main wall and the shielding layer 2 in step S01 , the process further includes: performing dust removal treatment on the inner wall of the cavity 5 .

[0083] Specifically, the dust removal process may include wet dust collection, purge filtration and other technologies, which are not limited in the present invention.

[0084] In some specific embodiments, before forming the cavity 5 between the main wall and the shielding layer 2 in step S01 , the process also includes: drying the inner wall of the cavity 5 .

[0085] Specifically, the drying process includes drying the cavity 5 with hot air.

[0086] Specifically, the drying process includes drying the keel before construction and fixation.

[0087] In some embodiments of the present invention, in step S02, the step of pouring slurry into the cavity 5 through the pouring holes 3 on the shielding layer 2 further includes the following steps:

[0088] S21: exhausting air through the exhaust holes 4 on the shielding layer 2 during pouring;

[0089] S22: When the slurry overflows from the vent hole 4, the vent hole 4 is blocked.

[0090] In some embodiments of the present invention, the grouting pressure for pouring the slurry into the cavity 5 is 0.2-0.4 MPa.

[0091] Specifically, the grouting pressure can be 0.2, 0.3 or 0.4 MPa.

[0092] In some embodiments of the present invention, after sealing the exhaust hole 4, the step of: continuing to inject the slurry for 10-20 seconds is further included.

[0093] Specifically, the time for continuing to inject the slurry may be 10, 12, 14, 16, 18 or 20 seconds.

[0094] In some specific embodiments, after the exhaust hole 4 is blocked, the slurry is continuously injected to make the pressure of the slurry reach 0.6-1 MPa.

[0095] Specifically, after the exhaust hole 4 is blocked, the slurry is continuously injected to make the pressure of the slurry reach 0.6, 0.7, 0.8, 0.9 or 1 MPa.

[0096] It should be noted that the steps and principles of the construction method of the above-mentioned shielding layer 2 provided in the embodiment of the present invention correspond one to one with the structure and principle of the above-mentioned shielding room. Those skilled in the art can know the technical solution of the construction method of the above-mentioned shielding layer 2 through the technical solution of the above-mentioned shielding room in combination with the prior art, so it will not be repeated here.

[0097] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A shielding room, characterized in that: include: Main wall; A shielding layer (2) is spaced apart from the main body wall; A keel layer (1) connecting the main body wall and the shielding layer (2) so that a cavity (5) is formed between the main body wall and the shielding layer (2); A packing layer is arranged in the cavity (5); The shielding layer (2) is provided with a casting hole (3) for casting slurry into the cavity (5) to form the filler layer.

2. The shielding room according to claim 1, characterized in that: The shielding layer (2) is also provided with an exhaust hole (4).

3. The shielding room according to claim 2, characterized in that: The exhaust hole (4) and the pouring hole (3) are respectively located at the two side edges of the shielding layer (2).

4. The shielding room according to claim 2, characterized in that: The shielding layer (2) is rectangular in shape, and the exhaust holes (4) and the casting holes (3) are respectively located at opposite corners of the shielding layer (2).

5. The shielding room according to claim 2, characterized in that: The shielding layer (2) comprises a closed structure, which is arranged at the exhaust hole (4) and is used to block the connection between the cavity (5) and the external space at the exhaust hole (4).

6. The shielding room according to claim 1, characterized in that: The slurry of the filler layer includes cement, quartz sand, gypsum, inorganic powder and expansion agent, and the weight ratio is 1:2.5-3.5:0.05:0.1-0.2:0.

01.

7. A construction method for a shielding room, characterized in that: The steps include: Constructing a cavity (5) between the main wall and the shielding layer (2); pouring slurry into the cavity (5) through the pouring holes (3) on the shielding layer (2); The slurry is cured to form a filler layer.

8. The construction method according to claim 7, characterized in that: The pouring of slurry into the cavity (5) through the pouring hole (3) on the shielding layer (2) comprises the following steps: During pouring, exhaust is performed through the exhaust holes (4) on the shielding layer (2); When the slurry overflows from the vent hole (4), the vent hole (4) is blocked.

9. The construction method according to claim 8, characterized in that: The grouting pressure for pouring the slurry into the cavity (5) is 0.2-0.4 MPa.

10. The construction method according to claim 9, characterized in that: After the exhaust hole (4) is sealed, the method further comprises the step of: continuing to inject the slurry for 10-20 seconds.

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