CN217591468U

CN217591468U - Electromagnetic shielding room

Info

Publication number: CN217591468U
Application number: CN202220667985.3U
Authority: CN
Inventors: 田燕妮; 张小军; 邓智嘉; 刘远亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-10-14
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses an electromagnetic shielding chamber belonging to the field of shielding magnetic fields; the shielding shell is welded above the chassis square tube group, the shielding shell is installed on the outer side of the support keel group through welding, and the air conditioner is installed in the shielding shell; the maintenance channel is arranged on one side of the upper part of the shielding shell, and the side wall of the shielding shell is fixedly connected; the shielding shell is welded with the lower chassis group; each bottom steel pipe in the underframe group is placed on an insulating cushion block, the bottom steel pipe is connected with the insulating cushion block through angle steel, and the insulating cushion block is placed on the ground of the structural building. The utility model discloses restrain because the information that electromagnetic radiation arouses leaks, reduce the outdoor electromagnetic pulse of electromagnetic shield and to the interference of information processing equipment such as electromagnetic shield indoor computer, protect the indoor information processing equipment of electromagnetic shield, ensure that data do not leak electromagnetic signal in the processing procedure, satisfy secret requirement.

Description

Electromagnetic shielding room

Technical Field

The utility model belongs to the technical field of the shielding to magnetic field, specifically be an electromagnetic shield room that satisfies C level standard requirement.

Background

With the rapid development of information technology, networks have become an essential part of people's work and life. However, the situation of network security is becoming more and more severe, attacks to others and network stealing occur, and the security and confidentiality of network information become more and more important, especially for computer rooms transmitting, processing and storing sensitive information.

A computer and its peripheral devices generate electromagnetic leakage, i.e., electromagnetic radiation, when they perform information processing. Some existing detection devices can intercept electromagnetic radiation information of a computer and peripheral equipment thereof within a kilometer range, and can distinguish information of different computer terminals. A large number of devices are arranged in a computer room, and most data in a network are collected into the devices for data exchange and processing. The construction of the machine room infrastructure plays a significant role in protecting internal equipment and data safety. And sensitive information can be stolen by intercepting and analyzing electromagnetic leakage information by others, so that great information leakage safety risk is brought. The computer room is used as a center for network information aggregation, and better safety measures should be provided to ensure the safety of various kinds of information.

The construction of the electromagnetic shielding room is a comprehensive project which relates to the anti-interference technology of the shielding room, the air conditioning technology, the power supply and distribution technology, the automatic detection and control technology, the comprehensive wiring technology, the air purification, the fire fighting, the building, the decoration and other major fields. Electromagnetic shielding treatment is carried out on computer rooms for transmitting, processing and storing sensitive information. However, the existing common electromagnetic shielding machine room can not meet the C-level requirement on the electromagnetic shielding effect, or can meet the C-level requirement on the electromagnetic shielding effect but has a complex structure, so that workers are inconvenient to enter the machine room to carry out work.

Aiming at the problem, an electromagnetic shielding room meeting the C-level standard requirement is provided, so that the C-level electromagnetic shielding effect meeting the network information safety requirement can be achieved, and related workers can conveniently enter the room to carry out work.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model provides an electromagnetic shielding room, a serial communication port, include: the device comprises a shielding shell, a support keel group, a chassis group, a shielding door, a filter, an air conditioner wall-passing processing system, a ventilation waveguide window and a maintenance channel; the shielding shell is welded above the chassis square tube group, the shielding shell is arranged on the outer side of the support keel group through welding, and the air conditioner is arranged in the shielding shell; the maintenance channel is arranged on one side of the upper part of the shielding shell, and the side wall of the shielding shell is fixedly connected; the shielding shell is welded with the lower chassis group; each bottom steel pipe in the underframe group is placed on an insulating cushion block, the bottom steel pipe is connected with the insulating cushion block through angle steel, and the insulating cushion block is placed on the ground of the structural building.

The filter includes: a power filter, a ground filter and a signal filter; the power filter, the grounding filter and the signal filter are all installed outside the maintenance channel shell.

The supporting keel group comprises a top surface keel group, a four-side wall surface keel group and a bottom surface keel group, wherein the bottom surface keel group is composed of rectangular steel pipes which are arranged in a staggered mode; the wall surface keel group consists of a vertically arranged wall surface main keel and a horizontally arranged wall surface auxiliary keel, and the wall surface main keel and the wall surface auxiliary keel are fixed by intermittent welding; the top surface keel group consists of top surface main keels and top surface auxiliary keels which are arranged in a staggered mode, and the top surface main keels and the top surface auxiliary keels are fixed through intermittent welding.

The ventilation waveguide window is a waveguide bundle consisting of a plurality of small waveguides, and the cross section of each small waveguide is hexagonal.

And the ventilation waveguide window is connected with the ceiling type fresh air machine through a pipeline.

The shielding shell is a hexahedral structure formed by continuously welding shielding steel plates, wherein the steel plates and the welding both meet the C-level electromagnetic shielding standard; the thickness of the shielding steel plate is more than or equal to 2mm, and the shielding steel plate is sequentially provided with two layers of alkyd iron red primer and one layer of grey alkyd antirust paint from inside to outside.

The mode that the bottom steel pipe passes through angle steel and links to each other with insulating cushion specifically does: one side edge of the angle steel is jointed and welded with the bottom steel pipe, and the other side edge of the angle steel is jointed with the insulating cushion block and connected with the insulating cushion block through an expansion bolt; the shielding door and the ventilation waveguide window are arranged on the shielding shell; the air conditioner wall-through processing system, the filter and the electronic wave guide pipe are arranged on the shielding shell or the maintenance passage.

The connection of the air conditioner wall-passing processing system to the indoor unit and the outdoor unit of the air conditioner comprises a refrigerant pipe, an air conditioner humidifying water pipe and a condensate pipe, wherein the tubular shielding processing is carried out when the refrigerant pipe, the air conditioner humidifying water pipe and the condensate pipe pass through the wall.

The tubular shielding treatment of the refrigerant pipe, the air pipe and the air conditioner humidifying water pipe during wall passing comprises the following steps: shielding treatment is carried out through a circular waveguide tube sleeved outside each tube;

the tubular shielding treatment of the condensate pipe during wall passing comprises the following steps: the funnel type waveguide tube is adopted for shielding treatment, and the air conditioner condensate water flows into the funnel and is discharged to the outside through the air conditioner waveguide tube.

The funnel type waveguide tube is arranged at an inclination angle of 15 degrees with the ground to prevent condensed water from flowing back.

The beneficial effects of the utility model reside in that:

1. the comprehensive engineering problems of multiple specialties such as shielding room anti-interference technology, air conditioning technology, power supply and distribution technology and the like required by computer shielding engineering are solved.

2. The electromagnetic shielding device achieves the C-level electromagnetic shielding effect required by network information safety, inhibits information leakage caused by electromagnetic radiation, reduces interference of electromagnetic pulses outside a machine room on information processing equipment such as computers in the machine room, protects and shields the information processing equipment in a shielding room, ensures that electromagnetic signals are not leaked in the data processing process, and meets the confidentiality requirement.

3. The shielding shell is used for placing equipment such as servers, switches and storage equipment, is a center for operating and maintaining various servers, core network switching equipment and various shared software and hardware resources (including high-performance computing resources, software resources, storage resources, data resources and the like), and is also an important core security essential device.

Drawings

Fig. 1 is a schematic structural view of an embodiment of an electromagnetic shielding chamber of the present invention;

fig. 2 is a partially enlarged schematic view of the shield shell and the structural building according to the embodiment of the present invention;

fig. 3 is a schematic top view partially in perspective in an embodiment of the present invention;

fig. 4 is a schematic structural view of the support keel set in the embodiment of the present invention.

Wherein: the method comprises the following steps of 1-shielding shell, 2-supporting keel group, 3-underframe group, 4-shielding door, 5-filter, 6-air conditioner wall-passing treatment system, 7-maintenance channel, 8-optical fiber waveguide tube, 9-ventilation waveguide window, 11-insulating cushion block, 12-angle steel, 13-expansion bolt, 14-structural building, 51-power filter, 52-grounding filter and 53-signal filter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment of the present invention shown in fig. 1 to 4 includes: the device comprises a shielding shell 1, a support keel group 2, a chassis group 3, a shielding door 4, a filter 5, an air conditioner (not shown in the figure), an air conditioner wall-passing processing system 6, a ventilation waveguide window 9 and a maintenance channel 7; the shielding shell 1 is welded above the underframe square tube group, the shielding shell 1 is installed on the outer side of the supporting keel group 2 in a welding mode, a hexahedral plate body formed by enclosing the shielding shell 1 comprises a top surface, four side walls and a bottom surface, the supporting keel group 2 also comprises a top surface keel group, four wall surface keel groups and a bottom surface keel group, the shielding shell 1 is used for carrying out continuous closed welding on a steel plate by adopting a welding process, an alkyd iron red primer is coated twice before welding, an alkyd antirust paint is coated once before welding, the position of a welding seam is reserved, and after the welding is finished, paint is additionally coated at the welding seam, so that the shell has moisture resistance; the steel plate and the welding meet the electromagnetic shielding C-level standard; the air conditioner is arranged in the shielding shell 1 and is connected with the outside of the shielding shell 1 through the air conditioner wall-passing processing system 6;

the shielding shell 1 is welded with the chassis group 3 below; each bottom steel pipe in the underframe group 3 is placed on an insulating cushion block 11, the bottom steel pipe is connected with the insulating cushion block 11 through angle steel 12, and the insulating cushion block 11 is placed on the ground of a structural building 14; the mode that the bottom steel pipe passes through angle steel 12 and links to each other with insulating cushion 11 specifically is: one side of angle steel 12 and bottom steel pipe laminating and welding, another side of

angle steel

12 and 11 laminating of insulating cushion and link to each other through expansion bolts 13.

The shielding door 4 and the ventilation waveguide window 9 are arranged on the shielding shell 1; the maintenance channel 7 is disposed on one side of the upper portion of the shielding shell 1, and the sidewall of the shielding shell 1 is fixedly connected, and here, the material and the installation form of the maintenance channel 7 do not affect the shielding effect of the shielding shell 1, so in this embodiment, the shell of the maintenance channel 7 is also surrounded by a steel plate, and the connection manner is also welding.

The air conditioner wall-through processing system 6, the filter 5 and the optical fiber waveguide tube 8 are arranged on the shielding shell 1 or the maintenance channel 7; all the filters 5 are installed in a centralized manner, and enough safety distance is kept between the various filters 5, so that the filtering and shielding processing of various signals entering and exiting a shielding room is ensured, and the mutual interference among different signals is avoided; the filter 5 mainly includes: a power supply filter 51, a ground filter 52, and a signal filter 53; the main function of the power filter 51 is to effectively filter a frequency point of a specific frequency in a power line or frequencies except the frequency point, and the installation position of the power filter 51 is close to a power distribution source and far away from the shielded door 4; and is therefore mounted outside the housing of the service aisle 7. The power filter 51 and the signal filter 53 are connected with the shielding shell 1 in a crimping mode, and the installation position is the position with higher flatness; and are therefore all mounted outside the housing of the service aisle 7. The main function of the grounding filter 52 is to effectively filter the frequency point of a specific frequency in the grounding wire or frequencies other than the frequency point, and simultaneously, to ground the computer equipment entering the shielding room, which is a guarantee for the safe operation of the computer equipment. The main function of the signal filter 53 is to filter digital and analog signals entering and exiting the shielded room.

The air conditioner wall-passing treatment system 6 is mainly used for connecting an indoor unit and an outdoor unit of an air conditioner and performing tubular shielding treatment when pipelines such as a refrigerant pipe, an air conditioner humidifying water pipe, a condensate pipe and the like pass through the wall; the power supply signal and the control signal of the indoor unit and the outdoor unit of the air conditioner are shielded by the filter and the optical fiber waveguide tube. The number of air-conditioning wall-through treatment systems 6 matches the number of air conditioners inside,

the outer side of the ventilation waveguide window 9 is connected with a ceiling type fresh air machine through a pipeline to maintain positive pressure in an electromagnetic shielding room (the pressure difference between the ventilation waveguide window and a corridor of a structural building is more than 5 Pa, the outdoor static pressure is more than 10 Pa), and a fire-proof valve is arranged.

In the present embodiment, the specific manufacturing process of the shield case 1 is as follows: and after the end of welding, paint is applied to the welding seam, so that the shell has moisture resistance.

In this embodiment, in order to facilitate installation, the top surface of the maintenance passage 7 for maintenance and the top surface of the shield case 1 are on the same plane, and the filter 5, the interface of the optical fiber waveguide 8, and other devices are installed on the top surface of the maintenance passage 7, and the welding area of the optical fiber waveguide 8 is subjected to heat preservation.

In this embodiment, the bottom keel group is composed of rectangular steel pipes of 60 × 40 × 3mm in staggered arrangement, and the intervals are all 1000 × 600; the wall surface keel group consists of a vertically arranged wall surface main keel and a horizontally arranged wall surface auxiliary keel, wherein the wall surface main keel and the wall surface auxiliary keel are fixed by intermittent welding; the wall main keels are made of rectangular pipes of 80X 40X 3mm, and the distance between every two adjacent wall main keels is 1000mm; the wall surface auxiliary keels are made of rectangular pipes with the diameters of 40 mm, 40 mm and 3mm, and the distance between every two adjacent wall surface main keels is 1000mm; the top surface keel group consists of top surface main keels and top surface auxiliary keels which are arranged in a staggered mode, the top surface main keels which are arranged at equal intervals are made of rectangular pipes of 80 multiplied by 40 multiplied by 3mm, and the top surface main keels are vertically fixed at intervals of 1000mm; the top surface auxiliary keels arranged at equal intervals are 40 multiplied by 3mm, and the intervals of 1000mm are fixed and transversely welded on the main keels by intermittent welding.

In the present embodiment, the underframe assembly 3 comprises a plurality of bottom steel pipes (ground beams) arranged at equal intervals, wherein the bottom steel pipes are made of rectangular pipes with the size of 60 × 40 × 3mm, and the interval between the bottom steel pipes is 600mm × 1000mm; the density of the insulating cushion blocks 11 is 600mm multiplied by 600mm, the thickness is 8mm, the relative positions correspond to the indoor antistatic floor support, and the levelness of the shielding body is realized. During laying, the insulating cushion block 11 is firstly laid on the capital construction ground of the structural building 14, the bottom steel pipe is laid on the insulating cushion block, and the bottom steel pipe is laid to be flat.

In the embodiment, the used shielding door 4 is opened and closed in a manual and electric driving mixed mode, so that the operation reliability is high; the sizes of the door leaves of the shielding door 4 are all 1.5m (W) multiplied by 2.0m (H), and the shielding door occupies a space as small as possible on the premise of ensuring that the shielding performance index meets the requirement.

In the present embodiment, all the filters 5 are installed collectively, wherein the power filter 51 and the signal filter 53 maintain a sufficient safety distance, and the front end of the power filter 51 may be provided with an overload protection device, but cannot be provided with an earth leakage protection device; when each filter 5 is installed, a hole is formed in the shielding shell 1 according to the installation size of the filter 5, copper mesh gaskets are arranged inside and outside the contact surface between the filter 5 and the main body structure, a certain pressing surface is formed on each gasket, and the gaskets are fastened by bolts; meanwhile, the grounding filter 52 specifically used is: the 100A DC logic ground filter 52 is only used, and the DC logic ground resistance value is not more than 1 omega; the power filters 51 specifically used are two sets 32A and three sets 300A; the signal filter 53 used in particular is a weak current filter.

In this embodiment, the optical fiber waveguide 8 used is a dedicated optical fiber waveguide, and the optical signal entering and exiting the network room enters the network room (inside the shielding housing 1) through the optical fiber waveguide; according to the actual situation, the shielding effectiveness is required to reach the C level, the optical cable is considered to be 12 cores, and 50 sets of optical fiber waveguides 8 with the diameter of 8mm are selected as channels for enabling optical fibers to penetrate through the shielding shell 1, so that frequency signals of wave bands which cannot be covered by the filter 5 are shielded.

In this embodiment, the signal filter 53 is configured with a high-efficiency low-leakage signal filter 53 to process the telephone signal, the smoke temperature sensing signal, the fire-fighting linkage control type, the fire sound and light alarm signal, the entrance guard control signal, the infrared alarm signal, and other cables through the wall, so as to ensure that the signals do not leak.

In this embodiment, according to actual requirements, 4 sets of precision air conditioners are installed in the shielding housing 1, and the equipment cabinet equipment also arranged in the shielding housing 1 is cooled, so that 4 sets of air conditioner wall-passing processing systems 6 are configured, and at the same time, 4 sets of filters for control signals of the air conditioners, including 4 sets of filters for power signals of the air conditioners, including 2 sets of 2 lines, including 220V/16A PF206C-16, are also provided, and the filters for control signals and power signals of the air conditioners are both installed above the shielding housing 1. The tubular shielding treatment is specifically: the refrigerant pipe, the air conditioning humidifying water pipe and other pipelines are all shielded by the circular waveguide pipes of the hot ground 26 x 3 sleeved outside each pipe; the copper pipe is sleeved outside the circular waveguide pipe, and the circular waveguide pipe and the copper pipe are welded together, so that the effects of wall passing and electromagnetic shielding are achieved. Condensed water generated by an air conditioner indoor unit is discharged out of the room through a condensed water pipe; the condensate pipe adopts the unique design of a funnel type waveguide tube, the air conditioner condensate water flows into the funnel to form a small reservoir and is discharged to the outside through the air conditioner waveguide tube, and the funnel type waveguide tube 8 is inclined by 15 degrees (relative to the ground) when being installed, so that the water cannot flow backwards.

In this embodiment, in order to meet the C-level electromagnetic shielding standard, the shielding shell 1 is a cold-rolled steel plate with a model Q195A, wherein the top steel plate and the side wall steel plate are steel plates with a thickness δ =2mm, and the ground steel plate is steel plate with a thickness δ =3 mm; as shown in Table 1, the shielding effectiveness of a 2mm cold-rolled steel plate is more than 150dB in a frequency band of 0.2-40 GHz, and the requirement of the shielding effectiveness index of a network machine room is completely met.

TABLE 1 Shielding effectiveness of Q195A Cold rolled Steel sheet 2mm in thickness

Frequency (GHz)	σr	μr	SE（dB）
				0.2	0.17	1000	＞150
1	0.17	1000	＞150
				10	0.17	1000	＞150
40	0.17	1000	＞150

In this embodiment, the ventilation waveguide window 9 is in the form of a cut-off waveguide, and is a waveguide bundle composed of a plurality of small waveguides having a hexagonal (honeycomb) cross-sectional shape, and is fabricated by a brazing process, and has the same life as that of the shield room in terms of corrosion prevention. Square and hexagonal waveguides are advantageous for isolation of electromagnetic waves because they allow fewer modes to propagate than circular waveguides. Under the condition of equal insertion attenuation capacity, the channel area of the hexagonal waveguide is larger than that of the square waveguide, so that the area is increased; and under the same size, hexagonal waveguide structure weight also than square waveguide light, the utility model discloses choose for use opposite side 5.6mm hexagonal waveguide hole. In order to select the ventilation cut-off waveguide window with insertion loss matched with the shielding effectiveness index of the shielding chamber, and the ventilation quantity meets the ventilation requirement of the shielding chamber. The utility model adopts the hexagonal waveguide with the cut-off frequency of f _c =6.92×25.4/w=30GHz>And (18 GHz), the cut-off frequency requirement is met (w is the diameter of a circumscribed circle of the hexagonal wavelet guide hole). The ventilation waveguide windows 9 used in particular are 4, of which the top 3 and the side 1 of the shielding shell 1 are present.

Claims

1. An electromagnetically shielded room, comprising: the device comprises a shielding shell (1), a support keel group (2), a bottom frame group (3), a shielding door (4), a filter (5), an air conditioner wall-passing processing system (6), a ventilation waveguide window (9) and a maintenance channel (7); the shielding shell (1) is welded above the chassis square tube group, the shielding shell (1) is installed on the outer side of the supporting keel group (2) through welding, and the air conditioner is installed in the shielding shell (1); the maintenance channel (7) is arranged on one side of the upper part of the shielding shell (1), and the side wall of the shielding shell (1) is fixedly connected; the shielding shell (1) is welded with the chassis group (3) below; each bottom steel pipe in the underframe group (3) is placed on an insulating cushion block (11), the bottom steel pipe is connected with the insulating cushion block (11) through angle steel (12), and the insulating cushion block (11) is placed on the ground of a structural building (14);

the air conditioner wall-passing treatment system (6) is used for connecting an indoor unit and an outdoor unit of an air conditioner and comprises a refrigerant pipe, an air conditioner humidifying water pipe and a condensate pipe, wherein the tubular shielding treatment is carried out when the air conditioner humidifying water pipe and the condensate pipe pass through the wall;

the tubular shielding treatment of the refrigerant pipe, the air pipe and the air conditioner humidifying water pipe during wall passing comprises the following steps: shielding by circular waveguides sleeved outside the tubes;

2. An electromagnetic shielding cage according to claim 1, characterized in that said filter (5) comprises: a power supply filter (51), a ground filter (52), and a signal filter (53); the power filter (51), the grounding filter (52) and the signal filter (53) are all installed outside the shell of the maintenance channel (7).

3. The electromagnetic shielding room according to claim 1, wherein the supporting keel group (2) comprises a top surface keel group, a four-surface wall surface keel group and a bottom surface keel group, wherein the bottom surface keel group comprises rectangular steel pipes which are arranged in a staggered manner; the top surface keel group consists of top surface main keels and top surface auxiliary keels which are arranged in a staggered mode, and the top surface main keels and the top surface auxiliary keels are fixed through intermittent welding.

4. An electromagnetically shielded room according to claim 1, wherein said ventilation waveguide window (9) is a waveguide bundle composed of a plurality of small waveguides having a hexagonal cross-sectional shape.

5. An electromagnetic shielding cabinet according to any one of claims 1 or 4, characterized in that the ventilation waveguide window (9) is connected to a ceiling-mounted ventilator by means of a pipe.

6. The electromagnetic shielding room according to claim 1, wherein the bottom steel pipe is connected with the insulating pad (11) through an angle steel (12) in a manner that: one side edge of the angle steel (12) is attached to and welded with the bottom steel pipe, and the other side edge of the angle steel (12) is attached to the insulating cushion block (11) and connected with the insulating cushion block through an expansion bolt (13); the shielding door (4) and the ventilation waveguide window (9) are arranged on the shielding shell (1); the outlets of the air conditioner wall-through processing system (6), the filter (5) and the electronic wave guide pipe (8) are arranged on the shielding shell (1) or the maintenance channel (7).

7. The electromagnetic shielding chamber according to claim 6, wherein the shielding shell (1) is a shielding steel plate which is continuously welded to form a hexahedral structure, wherein the steel plate and the welding both meet the electromagnetic shielding class C standard; the thickness of the shielding steel plate is more than or equal to 2mm, and the shielding steel plate is sequentially provided with two layers of alkyd iron red primer and one layer of grey alkyd antirust paint from inside to outside.

8. The electromagnetic shielding chamber as claimed in claim 1, wherein the funnel-type waveguide is disposed at an inclination of 15 ° with respect to the ground to prevent the reverse flow of the condensed water.