StandardizationModule machine roomIt is composed of customized integrated rack, screen cabinet, inter-level air conditioner, skylight, end door and various intelligent micro-information sensing equipment. The main rack of closed cold channel machine room can be installed at most.28 panel cabinets (including equipment panel cabinets, power distribution panel cabinets, wiring panel cabinets, inter-level air conditioners). Divide all kinds of screen cabinets into power distribution area, transmission equipment area, network (dispatching data network, integrated data network, etc.) equipment area, switching equipment area, wiring area, etc. according to the requirements of specific business areas, and reserve 2~3 empty screen cabinets at appropriate positions in each area according to the space usage. Each business screen cabinet is arranged in two columns in the order of "back-to-back and face-to-face.

Among them, considering the convenient operation and maintenance patrol, the power distribution area is arranged at the first position of the computer room entrance, I .e. the starting end of each column is the power distribution panel cabinet, so the power distribution cabinet is also called "column head cabinet".

1. Refrigeration channel sealing

Refer to the cooling power of the machine room, the single cooling capacity of the selected inter-column air conditioner, the air supply distance and other parameters, and reasonably arrange 2~4 inter-column air conditioners interspersed between the screen cabinets. Ideally, the following inter-level air conditioners can be used as the division point of the communication business area; Install one end door before and after the cold channel corridor composed of two rows of screen cabinets; at the top of the channel, skylights with the same number as the number of equipment cabinets are installed according to the length and width of the cold channel corridor to form a closed cold channel environment, so that the cold source directly enters the communication equipment.

2. Module screen cabinet

The communication equipment panel cabinet, ODF wiring panel cabinet, DDF wiring panel cabinet, IDF wiring panel cabinet and power distribution cabinet configured in the machine room are of standard design, with uniform size and in line with the IDC60297-1 standards of the International Electrotechnical Commission.

(1) Equipment and wiring panel cabinet

The ventilation rate of front and rear doors is 70%.

· Two vertical PDUs can be installed in the rear of the panel cabinet.

· The exact position of each "U" is marked on the vertical mounting column of the screen cabinet.

The front door, rear door and side panel of the screen cabinet can be locked and can only be opened with an access control card.

The static load of the screen cabinet shall not be less than 1300kg.

(2) Distribution panel cabinet

The ventilation rate of front and rear doors is 70%.

· Integrated equipment DC power distribution, UPS power distribution and commercial power distribution unit.

The installation of intelligent power tester, to achieve 7 x 24 hours uninterrupted monitoring, measurement of the input power supply voltage, current, power factor and the output current of each way.

The front door, rear door and side panel of the screen cabinet can be locked and can only be opened with an access control card.

The static load of the screen cabinet shall not be less than 1300kg.

3. Precision air conditioning

traditionalCommunication roomThrough the relative arrangement of the front and rear directions of the screen cabinet, an open cold and hot channel is formed, and the cold and hot air will mix at the top and side of the screen cabinet, resulting in a partial loss of cold capacity. In the closed cold channel machine room, custom-sized inter-column air conditioners are generally selected, the ends of which are arranged in the inter-column of the rack, and form a closed channel together with the equipment screen cabinet, power distribution screen cabinet and wiring screen cabinet to realize the isolation of hot and cold air.

(1) Intertrain-level air conditioning

Compared with room-level air conditioners, the gas delivery distance at the end of the inter-column air conditioner is short and the required wind pressure is small. When the intelligent control brushless DC motor is configured, it can significantly reduce the power consumption of the fan, optimize the airflow organization, and reduce The loss caused by mixing.

The inter-column air conditioner is a horizontal air supply mode. The airflow path is back in and front out, and the front side is out. It blows horizontally to the rack. After passing through the front door of the rack and cooling the equipment, it returns to the rear of the air conditioner through the rear door of the rack. The hot air discharged from the communication equipment is sucked in and cooled and blown out; the cold air is sucked and discharged by the communication equipment, and so on. This type of air conditioner is close to the heat source, and the air supply distance is greatly shortened, thereby reducing the pressure loss along the airflow and the leakage of cold air, and improving the utilization efficiency of cold energy.

(2) Room-level air conditioning

For smart grid communication rooms with an air supply distance of more than 15m, it is recommended to arrange air conditioning areas on one or both sides of the room, and configure one or more precision air conditioners to form a room-level refrigeration system to provide equipment operating environment that is completely free from the restrictions of air ducts, air doors, air outlets, etc. The air supply mode at the end of room-level air conditioner can be divided into lower air supply and upper air supply. It is recommended to adopt the mode of "upper routing and lower air supply" in the communication room of smart grid. An adjustable floor air supply is provided in the cold aisle.

For the installation of room-level air conditioners, the overhead clear height of the electrostatic floor of the machine room is required to be not less than 350mm to ensure the air supply effect of the air conditioner.

4. Fresh air system

Due to the impact of the grid onCommunication roomThe dust-proof index has higher requirements. The fresh air system is an indispensable part of the indoor air conditioning system of the closed machine room. The fresh air unit extracts outdoor fresh air and sends it to the room through the fan after dust removal, dehumidification (or humidification), cooling (or heating) and other treatments. One is to meet the health requirements of the staff in the machine room. The second is to keep a certain amount of fresh air in the machine room and maintain the positive pressure of the machine room, the dust inside the machine room is effectively discharged from the machine room to prevent outdoor dust from entering the machine room through the gap of the machine room.

5. Integrated doors and windows

In order to form the closed channel of the intelligent computer room, it is also necessary to make an integrated skylight integrated with the front and rear doors and the top of the cold channel screen cabinet group.

(1) End door

The end door of the closed channel is divided into two schemes: sliding door and double door, which can be selected according to the specific situation of the main space of the machine room.

It is recommended to set the front and rear doors as electric and mechanical, respectively, to ensure that at least one end door can be opened at any time in case of power failure, fire, earthquake and other unexpected situations.

(2) Sunroof

The skylight is composed of a side panel, a top panel, and a rotating skylight. The rotating skylight is connected to the top panel through a pin. The skylight is in a horizontally closed state under working conditions; the skylight pin is blown under fire conditions, and each skylight is automatically opened under the action of gravity, so that the fire extinguishing gas enters smoothly Channel.