Use and selection of cabinets in weak current engineering projects

Cabinets are generally made of cold-rolled steel plates or alloys used to store computers and related control equipment, which can provide protection for storage devices, shield electromagnetic interference, and arrange devices in an orderly and neat manner to facilitate future maintenance of devices. Cabinets are classified into server cabinets, network cabinets, and console cabinets.

Use of cabinet

Many people think of a cabinet as a cabinet for IT equipment. A cabinet is a cabinet, but that's not all. For the computer itself, the cabinet also has an important auxiliary role and UPS power supply. A good cabinet means to ensure that the computer can run in a good environment. Therefore, the role of the cabinet is equally important. The cabinet systematically solves the problems of high density heat dissipation, a large number of cable attachments and management, large capacity power distribution and full compatibility with different plant rack equipment in computer applications, so that the data center can operate in a highly stable environment.

Various types of cabinets can be seen in major computer rooms, and with the continuous breakthrough of the computer industry, the functions of the cabinet are becoming more and more large. Cabinets are generally used in network wiring rooms, floor wiring rooms, central computer rooms, data rooms, control centers, monitoring rooms, monitoring centers, etc.

Basic structure

The common cabinet colors are white, black, and gray. (which is divided into many types, such as orange grain, fine sand grain, etc.); According to the material of the cabinet, there are aluminum cabinet, cold-rolled steel plate cabinet, hot-rolled steel plate cabinet; According to the processing technology, there are nine fold profile cabinets and sixteen fold cabinets.

The type of plate, coating material and processing technology determine the stability of the cabinet. Generally, its length specifications are 600,800mm, width specifications are 600mm,800mm, 1000 mm, 1100 mm, 1200mm, and height specifications are 46U, 42U, 36U, 24U. The cabinet used in the early days was mostly made of castings or Angle steel connected or welded into a cabinet frame with screws and rivets, and then a cover plate (door) made of thin steel plate. This kind of cabinet is large, bulky, and simple in shape, and has been eliminated. With the use of transistors, integrated circuits and the ultra-miniaturization of various components, the structure of the cabinet is also developing in the direction of miniaturization and building blocks. The cabinet has developed from the whole panel structure in the past to the plug-in structure with a certain size series. The assembly arrangement of plug-in box and plug-in can be divided into horizontal arrangement and vertical arrangement. Cabinet materials are generally made of thin steel plates, steel profiles of various sectional shapes, aluminum profiles and various engineering plastics. In addition to welding and screws, the frame of the cabinet is also bonded.

According to the bearing capacity of the components, the material and its manufacturing process, the cabinet can be divided into two basic structures: profiles and thin plates.

① Profile structure cabinet: there are two kinds of steel profile cabinet and aluminum profile cabinet. The steel cabinet is composed of shaped seamless steel pipes as columns. The stiffness and strength of this cabinet are good, suitable for heavy equipment. The aluminum cabinet composed of aluminum alloy profiles has a certain stiffness and strength, and is suitable for general or light equipment. This kind of cabinet is light in weight, less processing, beautiful in appearance, and is widely used.

② Thin plate structure cabinet: the whole plate cabinet, its side plate is a single steel plate bent and formed. This kind of cabinet has good stiffness and strength, and is suitable for heavy or general equipment. However, because the side panel is not removable, it is inconvenient to assemble and maintain.

Cabinet accessories are also provided as required. Its main accessories are fixed or retractable guide rails, trays, L-shaped supports, cable troughs, cable tie plates, fans, and blind plates.

Technical requirement

(1) It should have good technical performance. The cabinet must be resistant to vibration, impact, corrosion, dust, water, and radiation to ensure stable and reliable operation of devices.

(2) should have good usability and safety protection facilities, easy operation, installation and maintenance, and can ensure the safety of the operator.

(3) It should be convenient for production, assembly, debugging, packaging and transportation.

(4) It should meet the requirements of standardization, normalization and serialization.

(5) Beautiful appearance, application, color coordination.

sort

With the development of computer and network technology, cabinet is becoming an important part of it. IT facilities such as servers and network communication equipment in data centers are developing in the direction of miniaturization, networking, and rackization. The cabinet is gradually becoming one of the protagonists in this change. Common cabinets can be divided into the following types:

According to the function, it is divided into: fireproof and anti-magnetic cabinet, power cabinet, monitoring cabinet, shielding cabinet, security cabinet, waterproof cabinet, safe, multimedia console, file cabinet, wall hanging cabinet;

According to the scope of application, it is divided into: outdoor cabinet, indoor cabinet, communication cabinet, industrial security cabinet, low-voltage distribution cabinet, power cabinet, server cabinet;

According to expansion, it is divided into: console, computer chassis cabinet, stainless steel chassis, monitoring console, tool cabinet, standard cabinet, network cabinet.

Cabinet plate requirements

1, cabinet plate: industry requirements, standard cabinet plate should be selected high-quality cold-rolled steel plate, many cabinets on the market is not made of cold-rolled steel, but with hot plate or even iron plate replacement, easy to rust deformation, please carefully identify!

Cold rolled steel plate. Cold-rolled steel plate is a steel plate generated by cold rolling, commonly known as cold plate. Compared with hot-rolled steel, cold-rolled steel plate thickness is more accurate, and the surface is smooth and beautiful, but also has a variety of superior properties, especially in terms of processing properties. The high quality cold rolled steel plate can ensure the long-term toughness and load-bearing performance of the cabinet. Cold-rolled steel plate is widely used in automobiles, refrigerators, washing machines and other home appliances as well as industrial equipment, various building materials. Cold plate surface: cold rolled steel plate surface is smooth, beautiful, smooth and delicate touch, full of toughness and steel force, highlighting the noble quality of the cabinet!

2, about the thickness of the plate: the general requirements of the industry: standard cabinet plate thickness column 2.0MM, side plate and front and back door 1.2MM (the industry requirements for the side plate is 1.0MM or more, because the side plate does not have a load-bearing role, so the plate can be slightly thinner to save energy), fixed tray 1.2MM.