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First, the mode selection wiring room <br> <br> large, the hinge of the room are made in the form of traces, for example, engine room and other room bank telecommunications data center mechanism. These equipment rooms are Class A equipment rooms. The reason they use the upper cabling method is that some advantages of the upper cabling are beneficial to improve the reliability and availability of the equipment room. The main advantages are: facing a large number of cables, easy maintenance Maintenance and line adjustment; easy to heat the cable, especially for power cables; due to the absence of a large number of trunking and other shielding materials under the floor, it is convenient for air-conditioning air supply, which is conducive to a more uniform temperature and humidity distribution in the engine room, reducing the air conditioning load; easy to observe the open fire directly , smoke, etc., is conducive to fire safety. The disadvantage of the upper cabling method is that the cost is relatively high. The requirements for the floor height of the computer room may not meet the demands of the beautification of the engine room. In addition, because the communication system's cables often need to be adjusted, there are some difficulties in operation. However, these problems are not the main concern of the A-class computer room, because such a large-scale computer room has a guaranteed capital investment, and the reliability and availability of the computer room are the main concerns, so staffing and equipment investment are relatively sufficient. The above problems are not difficult to solve.
At present, the B-type computer room has gradually become popular on the line, for example, the computer room of the branches of banks. This is because the demand for availability of the equipment room has been greatly increased, and the problems caused by the lower cabling have not been solved. Therefore, it is gradually transformed into the upper cabling method. However, Class B rooms do not have sufficient conditions like those of Class A rooms. They are often severely constrained by factors such as the building structure of the equipment room, cost constraints, and beautification of the environmental demands. As a result, some of the computer rooms have become unruly and their advantages have become disadvantageous. For example, some rooms are overly stressed and beautiful, and even the upper bridges are hidden above the ceilings. This not only makes the visibility of the upper tracks disappear, but also increases the danger. Due to the relatively frequent adjustment of the circuit in the Class B room, it is difficult to adjust the route of the original alignment. In this way, the process of dismantling the ceiling is also added, which not only increases the operational complexity, but also changes the ceiling after multiple installations. . At the same time, due to the increase in operating tools and operating time, the possibility of falling tools or other debris above the equipment is greatly increased, posing a threat to the stable operation of the equipment.
Compared with Class A equipment room, Class B equipment room has relatively more line adjustments according to needs, and the total amount of cables is relatively small. Some objective factors make it difficult to adjust the lines. For example, the height of the computer room building is not ideal, if it is necessary It is a very troublesome thing to carry out operations such as threading, take-off, and drawing in a narrow space. In this case, it is necessary to change the form of the bridge to ease the contradiction and not to follow the engineering practice.
Type C engine room is of low importance and scale, and the investment in computer room is limited. Therefore, the lower cabling method is generally used. This wiring method is simple in construction, low in cost, and can more flexibly control the overall effect of the equipment room. However, fire protection under the floor is a problem that needs attention. There have been a number of engine room fire accidents in the country. It has been found that there are hidden dangers of fire when the power cables are routed. For example, when the air conditioner leaks, it may cause a short circuit, generate sparks, and cause fire. National fire protection standards also provide that fire alarms and fire gas vents should be provided when the underfloor clearance is greater than or equal to 300 mm.
Second, the improvement suggestions wiring room <br> <br> general, the traces on the slot machine room is about 8mm steel plurality of hung up, spaced about 2 meters provided with a pair of hanging bars, also useful for other hanging material, but The same form. Such a hanging method needs to pass the cable through each pair of squeezing bars passing from the start to the end when the line is being taken or taken. The cable slot cover is removed, and the cable is dropped or taken out from the upper end of the slot. Frequent operations are obviously unsafe and time-consuming. If the cable is inserted or removed from the side of the slot once, the process of threading is eliminated, which will effectively reduce the difficulty of cable adjustment, as shown in Figure 2. The truss is made of angle steel with a width of about 40mm. The upper part of the suspended ceiling is made into a stable supporting structure. The lower part of the suspended ceiling is made into an inverted T-shaped structure. The trunking is placed in the position shown in Fig. 2 and fixed. One side of the slot is unobstructed, and the cable can be placed, combed, and bundled on the ground and lifted from the side into the slot at one time. Of course, because the trunking is in the air, the process of adjusting the ladder is inevitable.
In addition, the power cable should use a trapezoidal wire rack to prevent the cable from being covered. This is because the power cable generates a large amount of heat, and the insulating sheath is likely to be aged and cracked. When the load is increased too much, the cable may emit smoke or catch fire. Direct observation can effectively prevent the accident from expanding. As the power cables are seldom adjusted, the cables should be laid loose and tidy to facilitate heat dissipation and aesthetics. There are many adjustments in the communication cables, which are also chaotic. The heat generation is very small and can be placed in a closed Galvanized Wire trough, which is good for beauty.
Third, pay attention to other issues wiring room <br> <br> wiring room in the form of choice is not independent, the need for coordination with other systems, such as power supply systems, air conditioning systems, fire systems, integrated wiring systems, especially with the air conditioning system Coordination is one of the important factors in determining the form of wiring. The ideal design effect can only be achieved after the constraints between various systems are overcome.
The air-conditioning system in a computer room is generally divided into two types: side air supply and bottom air supply. Most rooms equipped with raised floors use the bottom air supply method. This is because the bottom air supply method has the best cooling effect and efficiency. The space under the floor (headroom) forms an air-conditioned air supply channel (also called a static pressure box), and a reasonable air outlet is arranged on the floor so that the temperature and humidity at various locations in the equipment room can be controlled in a balanced manner. When adopting the lower cabling method, wind resistance will be formed if wiring under the floor is optional, which will increase the resistance of the air supply. The layout of the cabling can only be installed on the periphery of the floor of the equipment room with a tine structure and analyze the direction of the air duct. Minimize resistance to air supply. Because the power cable is relatively close to the ground, it is necessary to prevent the impact of air-conditioning leaks and human-induced power cable damage in the design. When using the upper cabling method, if the upper deck space is insufficient and the layout of the cabling is a multi-layer bridge, the air return path of the air conditioning system will be affected, causing the return air speed to decrease and the temperature to increase (ie, increase the enthalpy difference), resulting in the air conditioning system. Increased load. This requires the upper track to use the layout of a single-layer bridge as much as possible and adjust the layout of the equipment. Otherwise, the building with a higher floor height must be selected as the engine room, leaving enough air return channels for the air-conditioning system. Some rooms use the combination of upper and lower alignments to simplify the number of layers in the layout of the bridge to meet the return air requirement of air conditioning. This kind of coordination problem is more common in the B-type engine room. Most of the air-conditioning systems use the lower air supply. The cabling form adopts the upper cabling or the combination of the upper and lower cabling according to the conditions. The A-category equipment room basically eliminates the constraints and the air-conditioning system is used. Air supply, cabling in the form of upper cabling; Class C equipment room generally use the next cabling, using multiple cabinet air conditioners to side air cooling, avoiding the constraints of the next cabling.
Once the wiring form of the equipment room is determined, it must be constructed strictly in accordance with the specifications and standards of integrated wiring, and in particular, attention must be paid to the quality control of the optical fiber fusion link. The current use of multi-mode optical fibers in the interior of a computer room has limited tensile strength, and its material and precision determine that optical fibers cannot be frequently moved around. Therefore, in addition to laying optical cables according to the specifications, the quality of fiber end welding affects the optical fiber. The key factor of communication quality is that the loss of the splice point is as small as possible. In practice, it can be 0 or 0.01 db, and the general requirement is not more than 0.05 db. Through reasonable wiring planning and high standards of construction, it can lay a solid and stable foundation for the safety of the computer room.
The equipment room is divided into three categories: A, B, and C. Type A equipment room generally adopts the upper cabling mode. The B-type computer lab has the upper cabling mode and the upper and lower cabling modes. The class C cabling room generally adopts the lower cabling mode. Each type of wiring has its own advantages and disadvantages. The key depends on the needs of the equipment room.