In the data center, thousands of IT devices are placed in the computer room, and many electronic information processing equipment has a strong electromagnetic leakage. When using these devices, it is bound to scatter a variety of processing information into a certain space. This poses a great threat to the secrecy of information. In order to effectively prevent electromagnetic interference, noise, radiation on electronic equipment and measuring instruments, and to prevent electronic signal leakage, threat to the safety of confidential information, data centers should prevent electromagnetic radiation leaks.
The data center is a rely on "Faraday cage" principle of steel structure house, including the six surface of the shell, doors and windows of the general housing elements, strict requirements of electromagnetic sealing performance, and the corresponding processing all the import pipeline shielding electromagnetic radiation, thereby blocking the entry, which is the most important room door entrance. As the saying goes "yifudangguan, Mofu", data center room is safe and heavy, very natural to the expert checks, all dangerous isolated in the room outside the shielding door came into being. The shield door is widely used in the data center, precision instruments, metrology room and room center control room and other special occasions in the building, to prevent the influence of external electromagnetic wave normal indoor electrical equipment and precision instruments, which makes the storage equipment instrument room to form a closed space to prevent entry of electromagnetic wave.
Room shielding performance data center is the main factor to depend on whether there is a high performance shielding door, shielding door is pressed by using the reed and the door "knife", so that the electromagnetic wave leakage path increases, leakproof requirements.
The door can be divided into single fan flat opening and double fan open door according to the opening form. According to the opening mode, it can be divided into two kinds: manual opening and electric opening. The external shielding door body may be made of color steel plate, stainless steel plate, galvanized plate, shielding performance can reach 150kHz~1GHz, less than 80dB. internal shielding door insulation material generally adopts galvanized sheet, conductive copper and cotton etc.. The shielding door frame is provided with a password lock or IC card lock, which can be connected with various access control systems, collaborative, open and close electric lock automatic door, the management and control of the staff, did not get access to the people will not be able to enter the room.
Handle, pull rod and inclined slider mechanism was exposed on the outside of the screen doors completely hidden in the shell, and effectively improve the appearance of the screen door, which also makes the screen door is very difficult by the external force to break into a higher safety performance. When the engine room suddenly power failure or mechanical transmission failure, the room staff can manually open the screen door. The screen door general with a motor, motor as driving source, rotation drive worm gear and worm mechanism to achieve shielding door opening and closing, because in order to increase the shielding effect of shielding door, inside there are many layers, placed a lot of material, the door body is also very heavy, simply relying on the power of one hand open very easily, with the help of motor power, can be opened easily.
Since the call screen door, the main function of this door is not only natural room access, more important is to have the function of shielding electromagnetic radiation, electromagnetic radiation isolation room inside and outside the room, around the wall can be well separated from the outside electromagnetic interference, shielding door position is room only contact with the outside world. The electromagnetic radiation isolation effect of this place is particularly critical.
Shielding doors from the outside look, the basic iron gate is a piece, and even a window is not, the purpose is to reduce the gap between inside and outside contact. The shielding door adopts steel plate, and the electromagnetic reflection effect is good, which makes the door weight larger and the switch more inconvenient. So, the shielding door translational pneumatic shielding door, electric lock door, automatic screen door several automatic switch door, the main difference between the several doors in the open way, intelligent level is reflected in the door, the door basically depends on the shielding switch power.
The traditional manual door opening has been gradually eliminated by human hand, shielding door using only in some small room, large room has been rarely used, the manual screen door switch for extra effort, if not the boys are unable to open and close the door. Manual screen door more use mechanical lock, by external force door switch, this is often for the daily maintenance of the computer room is very inconvenient. The shielding door area is larger than the size of the door, is actually the shielding door buckle at the door of the room, then the door opens outward, this design can also reduce the contact room inside and outside air, as enclosed in a rotating bolt has the rubber isolation shielding door, the screen door closed, these activities will also be there is a gap.
The shield door is an important part of the data center room, if the door screen do not, the whole room of the electromagnetic radiation effect will be greatly reduced, so the electromagnetic shielding requirements of relatively high data center room, to the deployment of shielding door good isolation effect, shielding door to standard object data center room.
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