Shielded insulated sliding door

Abstract

The present invention discloses a shielded insulated sliding door, comprising a door frame and multi-layer door leaves installed in the door frame in layers, wherein two adjacent layers of door leaves are spaced and insulated from each other, an insulating layer, a protective layer and a shielding layer are arranged in sequence from bottom to top under each layer of door leaves, and the shielding layers corresponding to each layer of door leaves are insulated from each other, and a driving device for driving the door leaves to move in and out of the door frame is arranged above each layer of door leaves. In order to achieve the effect of multi-layer shielding, insulation treatment is performed between the shielding layers to prevent coupling between the shielding layers from destroying the effect of electromagnetic wave reflection attenuation. By arranging multi-layer door leaves, arranging insulation between adjacent door leaves, and ensuring the insulation of the underground portion of the door frame through the insulating layer and the shielding layer, the shielding efficiency is improved, and multi-layer electromagnetic shielding in a true sense is achieved.

Description

Technical Field

[0001] The invention relates to the field of shielding insulation equipment, in particular to a shielding insulation sliding door. Background Art

[0002] Electromagnetic shielding technology mainly uses the eddy current effect of metal conductors and the skin effect of electromagnetic waves on the surface of good conductors to seal the equipment with a metal shielding cavity with a certain thickness. Shielding technology is required to ensure safety in many scenarios.

[0003] Among them, the transformer high-voltage test hall requires perfect electromagnetic shielding to ensure safety. However, in order to be able to enter and exit normally, an openable and closable door system needs to be set up. The door system is the main path of electromagnetic leakage. Therefore, improving the shielding effectiveness of the shielding door system is the main factor determining the performance of the test hall and is also an effective means to suppress radiation interference.

[0004] Therefore, how to provide a shielding insulated sliding door that can effectively improve the shielding effect is a technical problem that those skilled in the art currently need to solve. Summary of the invention

[0005] The object of the present invention is to provide a shielded insulated sliding door, which effectively improves the shielding efficiency by arranging multiple layers of door leaves and insulating adjacent door leaves from each other.

[0006] In order to solve the above technical problems, the present invention provides a shielded insulated sliding door, comprising a door frame and a plurality of layered door leaves installed in the door frame, wherein two adjacent layers of the door leaves are spaced apart and insulated from each other, an insulating layer, a protective layer and a shielding layer arranged in sequence from bottom to top are arranged below each layer of the door leaves, and the shielding layers corresponding to each layer of the door leaves are insulated from each other, and a driving device for driving the door leaves to move in and out of the door frame is arranged above each layer of the door leaves.

[0007] Preferably, it comprises a first door leaf and a second door leaf parallel to each other, a first insulating layer, a first protective layer and a first shielding layer are arranged below the first door leaf, a second insulating layer, a second protective layer and a second shielding layer are arranged below the second door leaf, the second insulating layer is arranged above the first shielding layer, and lower insulating vertical plates are arranged at the inner edges of the second insulating layer, the second protective layer and the second shielding layer, the lower insulating vertical plates isolate the first shielding layer and the second shielding layer, and the lower insulating vertical plates are located between the first door leaf and the second door leaf.

[0008] Preferably, the door frame includes door posts arranged on the outside of the first door leaf and the outside of the second door leaf, first corbel brackets are arranged on the door posts on both sides, crossbeams are arranged on the first corbel brackets, insulating pads are arranged between the first corbel brackets and the crossbeams, and the crossbeams are arranged horizontally and perpendicular to the first door leaf.

[0009] Preferably, two mutually parallel straight beams are connected under the cross beam, the straight beams are parallel to the first door leaf, a running vehicle capable of sliding along the straight beams is installed under the straight beam, the two running vehicles respectively hoist the first door leaf and the second door leaf, an upper insulating vertical plate is provided in the middle of the cross beam, and the upper insulating vertical plate is located between the two straight beams.

[0010] Preferably, the door frame further comprises a column and a door beam which are insulated and arranged on the inner side of the door post.

[0011] Preferably, an outer edge of the first shielding layer and an outer edge of the second shielding layer extend upward to wrap around the door frame.

[0012] Preferably, the insulating layer is a PP insulating board with a thickness of 10 mm, the protective layer is a C25 concrete layer with a thickness of 50 mm, the shielding layer is a galvanized steel plate with a thickness of 1.2 mm, and the insulating pad is a FR4 board with a thickness of 10 mm.

[0013] Preferably, airtight devices are installed on the door leaf and the door frame.

[0014] Preferably, the airtight device includes an airbag seat, an airbag arranged inside the airbag seat, and a spring sheet covering the airbag.

[0015] Preferably, the airtight device is arranged below the door leaf to abut against the threshold, and the airtight device is also arranged on the inner side of the door frame to abut against the outer side of the door leaf.

[0016] The present invention provides a shielded insulated sliding door, comprising a door frame and multi-layer door leaves installed in the door frame in layers, wherein two adjacent layers of door leaves are spaced apart and insulated from each other, an insulating layer, a protective layer and a shielding layer are arranged in sequence from bottom to top below each layer of door leaves, and the shielding layers corresponding to each layer of door leaves are insulated from each other, and a driving device for driving the door leaves to move in and out of the door frame is provided above each layer of door leaves.

[0017] Since the shielding effectiveness is the ratio of the electromagnetic wave energy incident on the material when there is no shielding to the electromagnetic wave energy after shielding at the same location, that is, the attenuation value of the shielding material to the electromagnetic signal, the greater the attenuation value, the better the shielding effectiveness. According to the formula W = R + A + B, the shielding effectiveness W is the sum of three parts, among which the electromagnetic wave energy loss reflected when the electromagnetic wave just enters the shielding body is the reflection attenuation R, the energy attenuation of the electromagnetic wave transmitted into the shielding body during the propagation process inside the shielding body is the absorption attenuation A, and the electromagnetic wave energy loss caused by multiple reflections between the shielding body layers is the multiple reflection attenuation B. Since there is no reflection attenuation B in a single-layer shielding layer, for shielding layers with the same total thickness, the shielding effectiveness of multiple layers is greater than that of a single layer. However, when only multiple layers of door leaves are set, and there is no insulation between adjacent door leaves and they are in direct contact, the actual shielding effect is equivalent to that of a single-layer door leaf. In order to achieve the effect of multi-layer shielding, insulation treatment is performed between the shielding layers to prevent coupling between the shielding layers from destroying the effect of electromagnetic wave reflection attenuation. By setting up multiple layers of door leaves and providing insulation between adjacent door leaves, and ensuring the insulation of the underground part of the door frame through insulating layers and shielding layers, the shielding effectiveness is improved and true multi-layer electromagnetic shielding is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic side view of a specific embodiment of the shielded insulated sliding door provided by the present invention;

[0019] Figure 2 A schematic front view of a specific implementation of the shielded insulated sliding door provided by the present invention;

[0020] Figure 3 A schematic side view of a door post in a specific implementation manner of the shielded insulated sliding door provided by the present invention;

[0021] Figure 4 A schematic diagram of a main view of a door post in a specific embodiment of the shielded insulated sliding door provided by the present invention;

[0022] Figure 5 This is a schematic structural diagram of an airtight device in a specific implementation manner of the shielded insulated sliding door provided by the present invention. DETAILED DESCRIPTION

[0023] The core of the present invention is to provide a shielding insulated sliding door, which effectively improves the shielding efficiency by arranging multiple layers of door leaves and insulating adjacent door leaves from each other.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Please refer to Figures 1 to 5 , Figure 1 A schematic side view of a specific embodiment of the shielded insulated sliding door provided by the present invention; Figure 2 A schematic front view of a specific implementation of the shielded insulated sliding door provided by the present invention; Figure 3 A schematic side view of a door post in a specific implementation manner of the shielded insulated sliding door provided by the present invention; Figure 4 A schematic diagram of a main view of a door post in a specific embodiment of the shielded insulated sliding door provided by the present invention; Figure 5 This is a schematic structural diagram of an airtight device in a specific implementation manner of the shielded insulated sliding door provided by the present invention.

[0026] A specific embodiment of the present invention provides a shielded insulated sliding door, including a door frame and a multi-layer door leaf installed in the door frame in layers, wherein two adjacent layers of door leaves are spaced apart and insulated from each other, an insulating layer, a protective layer and a shielding layer are arranged in sequence from bottom to top under each layer of door leaves, and the shielding layers corresponding to each layer of door leaves are insulated from each other, and a driving device for driving the door leaf to move in and out of the door frame is provided above each layer of door leaves.

[0027] That is, an insulating layer, a protective layer and a shielding layer are laid under the door frame, and multi-layer door leaves are set in the door frame and located above each layer, so that the multi-layer door leaves are insulated from each other and the ground. The door frame includes two parts, the inner and outer parts, and the door leaf is located between the inner and outer parts, and moves horizontally under the action of the driving device. The overall length of the door frame is roughly the length of two door leaves. A door opening is set at one end of the door frame, and the other end is closed by a wall panel. During the opening and closing process, the door leaf is moved horizontally into between the wall panels to expose the door opening, and the door is opened. It is moved out of between the wall panels to cover the door opening and the door is closed. Figure 2 In the open state, the door leaf is on the right, the door opening on the left is open, and the movement direction of the door leaf is parallel to the surface of the door leaf.

[0028] At the same time, embedded door frame parts are also provided, which are made of 200*200*8*12 H-shaped steel. Their function is to connect the door frame and the shielding layer to form a Faraday cage. The door leaf is made of 150*200*8 rectangular tubes fully welded to make the frame. C-shaped steel grids are laid at intervals of 600mm inside the frame, and 1.2mm galvanized steel plates are used on the outer surface to be fully welded to the frame to form a Faraday low cage, which has the effect of electromagnetic shielding.

[0029] The insulation layer is made of 10mm thick PP insulation board, which is pre-chamfered to 9×45° according to the design size and transported to the site for welding. When welding, the debris in the weld should be carefully cleaned, and the PP welding rod is melted along the seam of the PP board with a hot air gun to weld, so that the PP board components are completely welded together. The PP board is 10cm above the ground on all sides to ensure that the door leaf in the insulation layer is not connected to the ground.

[0030] The protective layer above the insulating layer is a 50mm thick C25 concrete protective layer, the purpose of which is to isolate the shielding layer and prevent the high temperature from damaging the insulating layer during welding of the shielding layer. The shielding layer is arranged above the protective layer and is a 1.2mm thick galvanized steel plate with an overlap width of 10mm. The joints are fully welded using carbon dioxide gas protection, the purpose of which is to fully weld the shielding layer in the test hall to form a Faraday cage and achieve an electromagnetic shielding effect. The material and size of each layer can be adjusted according to the situation, all within the protection scope of the present invention.

[0031] Since the shielding effectiveness is the ratio of the electromagnetic wave energy incident on the material when there is no shielding to the electromagnetic wave energy after shielding at the same location, that is, the attenuation value of the shielding material to the electromagnetic signal, the greater the attenuation value, the better the shielding effectiveness. According to the formula W = R + A + B, the shielding effectiveness W is the sum of three parts, among which the electromagnetic wave energy loss reflected when the electromagnetic wave just enters the shielding body is the reflection attenuation R, the energy attenuation of the electromagnetic wave transmitted into the shielding body during the propagation process inside the shielding body is the absorption attenuation A, and the electromagnetic wave energy loss caused by multiple reflections between the shielding body layers is the multiple reflection attenuation B. Since there is no reflection attenuation B in a single-layer shielding layer, for shielding layers with the same total thickness, the shielding effectiveness of multiple layers is greater than that of a single layer. However, when only multiple layers of door leaves are set, and there is no insulation between adjacent door leaves and they are in direct contact, the actual shielding effect is equivalent to that of a single-layer door leaf. In order to achieve the effect of multi-layer shielding, insulation treatment is performed between the shielding layers to prevent coupling between the shielding layers from destroying the effect of electromagnetic wave reflection attenuation. By setting up multiple layers of door leaves and providing insulation between adjacent door leaves, and ensuring the insulation of the underground part of the door frame through insulating layers and shielding layers, the shielding effectiveness is improved and true multi-layer electromagnetic shielding is achieved.

[0032] The number of door leaves can be adjusted as needed, such as setting door leaves on both sides, that is, including a first door leaf 1 and a second door leaf 2 parallel to each other, a first insulating layer 3, a first protective layer 4 and a first shielding layer 5 are arranged below the first door leaf 1, a second insulating layer 6, a second protective layer 7 and a second shielding layer 8 are arranged below the second door leaf 2, and the second insulating layer 6 is arranged above the first shielding layer 5. Three or more layers of door leaves can also be set according to the situation, and more layers of structure can be added accordingly to further improve the shielding effect.

[0033] Furthermore, a lower insulating plate 9 is provided at the inner edge of the second insulating layer 6, the second protective layer 7 and the second shielding layer 8, the lower insulating plate 9 isolates the first shielding layer 5 and the second shielding layer 8, and the lower insulating plate 9 is located between the first door leaf 1 and the second door leaf 2. Specifically, the width of the second insulating layer 6, the second protective layer 7 and the second shielding layer 8 is only half of the width of the first insulating layer 3, the first protective layer 4 and the first shielding layer 5, the second insulating layer 6, the second protective layer 7 and the second shielding layer 8 are integrally arranged above the first insulating layer 3, the first protective layer 4 and the first shielding layer 5, the outer edge of the second insulating layer 6 is located on the outer side of the second door leaf 2, the inner edge of the second insulating layer 6 is located between the first door leaf 1 and the second door leaf 2, the outer edge of the first insulating layer 3 is located on the outer side of the second door leaf 2, the inner edge of the first insulating layer 3 is located on the outer side of the first door leaf 1, the opposite side of the two door leaves is the inner side, and the opposite side is the outer side. At the same time, the lower insulating vertical plate 9 isolates the first shielding layer 5 and the second shielding layer 8, and further isolates the first door leaf 1 and the second door leaf 2. At the same time, the edges of each layer of structure buried underground are bent upward to form a groove structure opening upward to achieve all-round protection.

[0034] In the shielding insulated sliding door provided in the specific embodiment of the present invention, in order to stably install various structures and ensure the shielding effect, the door frame includes a door post 10 arranged on the outside of the first door leaf 1 and the outside of the second door leaf 2, that is, the outside of the first door leaf 1 and the outside of the second door leaf 2 are both provided with door posts 10, and first corbel brackets 11 are arranged on the two opposite door posts 10, and a crossbeam 13 is arranged on the first corbel bracket 11. An insulating pad 12 is arranged between the first corbel bracket 11 and the crossbeam 13 to insulate the crossbeam 13 from the door post 10, and the crossbeam 13 is arranged horizontally and perpendicular to the first door leaf 1. The first corbel bracket 11 can also be arranged on only one side of the door post 10 to support one end of the crossbeam 13, and the other end of the crossbeam is directly connected to the door post 10 on the other side.

[0035] Furthermore, two mutually parallel straight beams 14 are connected below the cross beam 13. The straight beams 14 are arranged horizontally and parallel to the first door leaf 1. A trolley 15 capable of sliding along the straight beam 14 is installed below the straight beam 14. The two trolleys 15 respectively hoist the first door leaf 1 and the second door leaf 2, or the number of trolleys 15 is increased, and multiple trolleys 15 are installed on each door leaf. An upper insulating vertical plate 16 is also required to be arranged in the middle of the cross beam 13. The upper insulating vertical plate 16 is located between the two straight beams 14, thereby insulating the two trolleys 15, so that the two door leaves are also insulated. Specifically, a rectangular frame structure can be formed by four door posts 10, two cross beams 13 and two straight beams 14. The door posts 10 are vertically four side edges of the rectangular parallelepiped, the two cross beams 13 are top beams that cross the door leaf at the top, and the two straight beams 14 are top beams parallel to the translation direction. The number of door posts 10 and cross beams 13 may be appropriately increased to increase the structural strength. An auxiliary reinforcement beam may be further provided below the cross beam 13 , the auxiliary reinforcement beam being provided horizontally and perpendicular to the cross beam 13 .

[0036] Since the crossbeam 13 and the doorpost 10 must be connected to the hall steel structure to ensure the structural stability of the entire shielding door system, but in order to achieve the double-layer shielding and double-layer insulation effects, the solution adopted is to install a layer of 10mm thick FR4 board as an insulating pad 12 between the crossbeam 13 and the first corbel bracket 11, and fix it with a bolt group. In order to avoid the contact between the bolts and the steel structure corbel to destroy the insulation effect, the present invention adds an insulating sleeve made of FR4 material to the bolt hole to ensure that the crossbeam 13 of the gate is structurally stable and fully insulated from the steel structure doorpost 10, laying a good foundation for the insulation between the gates later. The crossbeam 13 is made of 150*150*6 square tubes, and the straight beam 14 is made of 45b I-beams, which are fully welded to the crossbeam 13. The running vehicle 15 is made of a 1.5kW motor with a reducer and gears to provide power for the operation of the door leaf.

[0037] Furthermore, the door frame also includes a column 17 and a door beam 18 which are insulated and arranged inside the door post 10, and are made of a 150*150*6 square tube, and are used to provide support for the door leaf, and need not contact the door post 10 to ensure the insulation effect. Specifically, according to the position of the door post 10, it is arranged inside the door post 10, and the connection method refers to the door post 10 and the cross beam 13, and is connected by setting a second corbel bracket and bolts.

[0038] In order to ensure the shielding effect, the outer edge of the first shielding layer 5 and the outer edge of the second shielding layer 8 extend upward to wrap the door frame and meet above the door frame without touching each other, while leaving space for the door opening.

[0039] On the basis of the shielded insulated sliding door provided in the above-mentioned specific embodiments, an airtight device is installed on the door leaf and the door frame. Specifically, the airtight device includes an airbag seat 19, an airbag 20 arranged inside the airbag seat 19, and a spring sheet 21 covering the airbag 20. Since there are errors in the straightness of the steel material and there are aging and deformation during future use, the connection between the door frame and the door leaf cannot be completely sealed, so the design of the airbag 20 and the spring sheet 21 (2mm beryllium bronze spring sheet) is adopted. After the door is closed in place, the airbag 20 is inflated to push the beryllium bronze spring sheet out and press it on the door leaf or door frame, thereby ensuring that there is no gap between the door frame and the door leaf.

[0040] In order to ensure the sealing performance, the airtight device is arranged below the door leaf to abut against the threshold, and the moving direction of the spring sheet 21 is parallel to the door leaf. The airtight device is also arranged inside the door frame, that is, inside the column 17 and the door beam 18, to abut against the outer edge of the door leaf (except the bottom), and the moving direction of the spring sheet 21 is perpendicular to the door leaf. Guard plates can also be arranged on both sides of the airbag seat 19 for connection with the door frame. The threshold is arranged at the top of each layer structure, and guide wheels can also be arranged on both sides of the threshold, and guide grooves are arranged on the lower end surface of the door leaf.

[0041] The above is a detailed introduction to the shielded insulated sliding door provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A shielded insulated sliding door, It is characterized in that It comprises a door frame and a plurality of door leaves installed in the door frame and arranged in layers, wherein two adjacent layers of the door leaves are spaced and insulated from each other, an insulating layer, a protective layer and a shielding layer are arranged in sequence from bottom to top under each layer of the door leaves, and the shielding layers corresponding to each layer of the door leaves are insulated from each other, and a driving device for driving the door leaves to translate in and out of the door frame is arranged above each layer of the door leaves; The insulating layer is specifically a PP insulating board; It also comprises a first door leaf (1) and a second door leaf (2) which are parallel to each other, wherein a first insulating layer (3), a first protective layer (4) and a first shielding layer (5) are arranged below the first door leaf (1), and a second insulating layer (6), a second protective layer (7) and a second shielding layer (8) are arranged below the second door leaf (2), the second insulating layer (6) is arranged above the first shielding layer (5), and a lower insulating vertical plate (9) is arranged at the inner edges of the second insulating layer (6), the second protective layer (7) and the second shielding layer (8), the lower insulating vertical plate (9) is used to isolate the first shielding layer (5) from the second shielding layer (8), and the lower insulating vertical plate (9) is located between the first door leaf (1) and the second door leaf (2); The door frame comprises door posts (10) arranged on the outside of the first door leaf (1) and the outside of the second door leaf (2), first corbel brackets (11) are arranged on the door posts (10) on both sides, a crossbeam (13) is arranged on the first corbel bracket (11), an insulating pad (12) is arranged between the first corbel bracket (11) and the crossbeam (13), and the crossbeam (13) is arranged horizontally and perpendicular to the first door leaf (1); Two mutually parallel straight beams (14) are connected below the cross beam (13); an upper insulating vertical plate (16) is arranged in the middle of the cross beam (13); and the upper insulating vertical plate (16) is located between the two straight beams (14).

2. The shielded insulated sliding door according to claim 1, It is characterized in that The straight beam (14) is parallel to the first door leaf (1), and a running vehicle (15) capable of sliding along the straight beam (14) is installed below the straight beam (14), and the two running vehicles (15) respectively hoist the first door leaf (1) and the second door leaf (2).

3. The shielded insulated sliding door according to claim 2, It is characterized in that The door frame further comprises a column (17) and a door beam (18) which are insulated and arranged inside the door column (10).

4. The shielded insulated sliding door according to claim 3, It is characterized in that The outer edge of the first shielding layer (5) and the outer edge of the second shielding layer (8) extend upwards to wrap around the door frame.

5. The shielded insulated sliding door according to claim 1, It is characterized in that The insulating layer is specifically a PP insulating board with a thickness of 10 mm, the protective layer is specifically a C25 concrete layer with a thickness of 50 mm, the shielding layer is specifically a galvanized steel plate with a thickness of 1.2 mm, and the insulating pad (12) is specifically a FR4 board with a thickness of 10 mm.

6. The shielding insulated sliding door according to any one of claims 1 to 5, It is characterized in that Airtight devices are installed on the door leaf and the door frame.

7. The shielded insulated sliding door according to claim 6, It is characterized in that The airtight device comprises an airbag seat (19), an airbag (20) arranged inside the airbag seat (19), and a spring sheet (21) covering the airbag (20).

8. The shielded insulated sliding door according to claim 7, It is characterized in that The airtight device is arranged below the door leaf to abut against the threshold, and the airtight device is also arranged on the inner side of the door frame to abut against the outer side of the door leaf.

Images