Hello, I may have a little more to say. Weak current system is a comprehensive system engineering in modern buildings. It is closely related to the mechanical and electrical equipment of all buildings in the building, such as power distribution, air conditioning, lighting and other facilities. These weak current systems include building equipment monitoring system, safety protection system, all-in-one card system, satellite cable TV and video-on-demand system, structured integrated wiring system, LED and touch screen inquiry system, multifunctional conference system, computer room, power supply, lightning protection and grounding system, background music and broadcasting system, etc.

the engineering design of integrated pipeline includes the weak current embedded pipe, reserved holes, weak current shaft, bridge, power supply, grounding, lightning protection, shielding and computer room related to the whole weak current system. The design and construction of integrated pipeline also involves the relationship with other pipelines (such as HVAC, water supply and drainage, and high voltage), as well as the integrated piping or adjustment of building functions, bridge laying and embedding, etc. In the weak current pipeline system of this scheme, all weak current system lines except the fire protection system use the same bridge frame, and the bridge frame of the weak current system pipeline should be considered as follows:

A. The bridge frame of the fire protection system is laid separately, which is a separate system and does not interfere with other systems.

B, the integrated wiring system transmits a large number of data signals, so it needs strong anti-interference. At the same time, six types of wiring are used in the integrated wiring system, which requires high construction technology and a large number of cables, so it is also appropriate to form a system separately. In the past, a large number of engineering practices have proved that it is appropriate to set up the weak current bridge of the integrated wiring system alone.

C, under the overall planning, the weak current signals of several other subsystems can share a set of bridge, which is convenient for maintenance and management, and also convenient for isolating the power line and signal line of the weak current system.

considering the above comprehensive factors, it is convenient for maintenance and management, mainly considering a set of bridge for comprehensive wiring, and a set of bridge for monitoring and other systems. In addition to these two sets of bridge, a separate set of bridge is needed, so * * * uses three sets of bridge.

Design of vertical system for weak current pipeline

Install three bridges in the weak current pipeline well: a 411*211 trough bridge for the cables of integrated wiring system to pass through; The other is 311*151, which is used to monitor the cable passing through other systems; In addition, a bridge of 111*51 is used for the voice point of the party and government private network. Each meter of the bridge is provided with a buckling ring to fix the vertical optical fiber, large logarithmic cable, six kinds of twisted-pair cables from the floor to the management room and other weak current lines. For satellite and cable TV systems, a 211*111*111 distributor box is set in the weak current room on each floor of the main building and the auxiliary building as the installation box and wiring junction box for amplifiers and branch distributors, and the distributor box is installed in the weak current room.

after the vertical bridge is installed, a closing plate should be set in the weak current well, which should be opened when it is closed at ordinary times, overhauled or added with trunk lines.

Design of horizontal bridge

A. Integrated wiring system

Because there are obviously many information points on each floor, we installed horizontal bridge in the ceiling of the corridor on each floor. The size of the bridge is different according to the number of information points in each system, and it is mainly divided into three parts like the vertical part: the integrated wiring takes 211*111 horizontal bridge except the party and government private network, and the monitoring part also takes 211*111. The bridge should be installed close to the inside of the corridor, because the ceiling in the corridor is small and there are many distribution pipelines, such as air conditioning system, water supply and drainage system and high voltage, which should be laid in the ceiling. The cable from the bridge to the information point is DG21~DG25 (two Category 6 cables pass through DG21 and three Category 6 cables pass through DG25), which are laid in the wall or ceiling. The embedded box of the module is an iron box of 86H51 type, and the installation height is 31CM from the ground.

B and BA systems

DDC controllers are basically installed on each floor of the ba system, and RS-485 lines are arranged between DDC's, so wire conduits below DG25 are laid in the ceiling and walls, and the installation height of DDC is 1.5M from the vertical center. BA system and monitoring system * * * use a set of bridge.

C. Satellite and CATV system

The horizontal pipes of satellite and CATV system are led out from the weak current horizontal bridge and laid in the ceiling of the floor corridor. Cable TV shall set distributor box in the weak current room of the corresponding floor, and install junction box in the ceiling, and the junction box shall have corresponding cover plate. The junction box is used for installing the branch distributor or wiring. The terminal from the junction box of the branch to each room is DG21~25 conduit, which is laid in the wall or ceiling with an installation height of 31CM. The embedded box is an 86H51 iron box.

D, other weak current systems

Other weak current systems need not be arranged as a whole because they are distributed in a single floor. Cable protection tubes are all wire tubes below DG32 and buried in the ceiling or wall.

Design of weak current room and management room

Because weak current room is the confluence and management room of weak current system, it is necessary to arrange the distribution of pipelines and the location of junction box or control box. We installed a comprehensive wiring standard cabinet and TV distributor box in the weak current room, and all the wiring and distribution of weak current systems were completed in it. A 411*211 bridge frame is laid in the weak current shaft to connect the weak current rooms on all floors with the horizontal bridge frame. There should be a grounding system in the weak current room, and a 41*4 galvanized flat iron should be laid in the weak current room as a comprehensive grounding. The information points in the second-floor integrated wiring machine room are laid under the raised floor, so the laying method of the bridge is mainly underground trench. If you still don't understand, you have to go to Xunwei and look at the web links, hoping to help you.