Hello everyone, I'm Brother Xue. Recently, the readers of the VIP member group have consulted the system design scheme of the integrated pipe network, and today they share a set of template materials, which can be referred to.
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This system mainly carries out comprehensive pipeline design for this project. The integrated pipeline system is a bridge for the connection and integration of various control system equipment, and the system is composed of weak current bridge, steel pipe, various cables and auxiliary materials.
The weak current integrated pipeline system is the connection link and transmission bridge of all intelligent subsystems, and without reasonable and optimized comprehensive pipeline planning, no matter how good the equipment is, the cost performance will be greatly reduced. The bridge pipeline of the system should be planned from an overall perspective, so that it has the best route from the management room, the control room, the weak current shaft and even each information point or control point. These routes should be placed in the building according to the actual situation of the intelligent project, in accordance with the relevant specifications and certain rules, so that the subsystems can operate efficiently without affecting the overall appearance of the building.
The design principles are as follows:
All trays are made of galvanized metal. The garage in the basement, the outdoor buried ground or through the civil air defense engineering office uses the national standard welded steel pipe (SC pipe), and the above-ground part adopts PE pipe to ensure the transmission performance of intelligent information.
The security system, a first-class system, etc., and the integrated wiring system are laid out in a set of bridges.
Unified planning of mobile signal coverage and vertical routing of communication access system.
Strong current cables are not in the same pipe or slot as weak current cables.
To prevent electromagnetic interference, the tray and conduit should maintain a good electrical connection and meet the grounding requirements.
Material selection principles:
The weak current integrated pipeline system is the foundation of all intelligent systems, and the quality of the pipeline itself and the quality of construction will directly affect the normal and effective operation of each intelligent weak current system. The material selection of this system is mainly as follows:
Tubing Selection: System 00 above the use of pvc pipes;The roof is made of SC galvanized steel pipes;Outdoor use of rigid plastic pipes, PE pipes (if you want to cross the road, use G pipes);
Tray selection: The bridge is made of high-quality galvanized bridge, which meets the national standard. It is made of fireproof materials, waterproof, anti-corrosion and moisture-proof treatment, and is uniformly made of cold-galvanized steel plate.
The comprehensive pipeline design of the intelligent engineering of the dormitory is different from the weak current pipeline design of other projects, and it is also different from the engineering design of the municipal road telecommunication pipeline. Its characteristics are manifested in:
1) The weak current well in the dormitory area is narrow and the ceiling height is low.
2) The building is relatively independent from each other, and at the same time, it is required to achieve unified management, and the distribution of intelligent systems is scattered, and the pipeline laying of the intelligent integrated pipeline system is required to have good continuity, high reliability, and effective anti-corrosion, moisture-proof and explosion-proof.
3) For the transmission cable of low-level weak current signal, it can effectively prevent the introduction and interference of high potential, and at the same time, it is necessary to avoid the high-potential broadcast cable and other weak current cables to be laid in the same trench, and also to avoid the intervention of the wire that provides mains power supply for weak current equipment.
4) Reliable lightning protection and grounding design, shielding design, effectively protect the stable operation of intelligent systems.
5) Combined with the rapid development of intelligent technology, according to national norms, reserve an appropriate margin for indoor and outdoor weak current pipelines, which is convenient for maintenance and the increase or decrease of cables.
According to the above characteristics, the system will carry out the intensive design of the comprehensive pipeline of the intelligent project in combination with the actual situation of the intelligent project of the project.
Bridge planning
According to the architectural characteristics of the dormitory, there are two weak current shafts on each floor. The whole weak current system bridge is divided into vertical bridge and horizontal bridge. The vertical trays are installed in the vertical hoistways of the building, and the horizontal trays are installed on all floors of the building. 3 of the dormitory buildings on the 2nd to 19th floors have no horizontal bridges.
Horizontal bridge sub-system backbone and branch layout: energy metering system, integrated wiring system, security system, wireless communication coverage system according to the number of system cables design bridge, UPS power wiring laying bridge. The bridge ensures the necessary reservation to facilitate the later expansion and increase of the system. The horizontal bridge of the weak current system is counted according to the number of front-end points, and the actual number is designed, and the capacity of the bridge is calculated according to the cross-sectional area of the cable, which occupies less than 40% of the overall cross-sectional area of the bridge.
Two sets of bridges are provided in the horizontal part, and the horizontal weak current system is equipped with a set of integrated bridge in addition to the public address system, and the UPS power supply is provided with a set of bridge. The specifications of the bridge are *100, etc. Among them, the intranet and the private network share a set of bridges.
The vertical part is provided with a set of bridge for the integrated wiring, integrated security system of the integrated bridge (specification is 300 * 100). At the same time, a vertical bridge (a 50mm wide feeder channel is set up for the operator, which is separated by a partition plate to facilitate maintenance and management) for the operator to access for exclusive use.
Piping planning
It is recommended that the pipeline embedding be uniformly planned for the basement and outdoor parts to use SC galvanized steel pipes (wall thickness not less than 1.).5mm), the above-ground part adopts PVC pipe), which is easy to install, and the specific installation location is determined according to the distribution of the intelligent weak current system. At the same time, waterproof sleeves are reserved in each building as a channel for outdoor cables to enter the interior. When the pipeline design of this project, multiple DN100 pipes are set up in double rows, and maintain a certain inclination to prevent rainwater from flowing back.
The buried depth of the outdoor pipeline is generally not required if there are no special requirements, the depth is about 60cm, and the pipeline is about 30 50 meters apart to build a handhole well, which is convenient for threading construction and maintenance. The outdoor part includes manhole wells and handhole wells, steel pipes are used at the crossing of the road, and PE pipes are used for the part buried in the green belt. The size of the handhole well is 80 cm wide, 100 cm long and 80 cm deep, and it is made of bricks, and the top surface is covered with prefabricated covers.
Cable routing
The system will lay different types of cables according to the actual needs of each intelligent subsystem, and the cables of each subsystem will be connected to the nearest weak current bridge from the equipment terminal through the embedded pipeline, and then connected to the control center through the bridge to complete the link connection.
The pre-embedding of its lines is mainly determined according to the needs of each subsystem. The system is set up with 1 2 weak current cables through 20 pipes, 3 4 weak current cables through 25 pipes, and 5 6 weak current cables through 32 pipes.
Lightning protection and grounding measures for weak current bridge and weak current pipeline: Both the electric bridge and weak current pipeline must be safely grounded with each other. Reliable grounding is ensured by welding or copper wire twisting.
In order to ensure the safety of the line, the pipeline should have a good grounding end. Metal conduits, cable trays and wiring cabinets need to be connected as a whole and then grounded.
The following recommendations are made for the design of the grounding system:
1.When the bridge system is used to ground the trunk line, the insulating coating of the connecting plate on both sides of each section of the bridge should be removed, and the measured connection resistance should not be greater than 000033ω。
2.The whole process of the bridge should be crossed by flexible wires or braided copper wires, and the cross-section of the jumper wire should not be less than 6mm2, and the insulation layer at the grounding bolt connection should be cleared.
3.The effective cross-sectional area of any effective cross-sectional area of the metal tray system used as the grounding trunk should meet the requirements.
4.The specification of the galvanized cold-rolled metal tray is 2 meters section, and an effective grounding body (connecting wire) is added when the bridge is connected with the bridge connecting piece, and the diameter of the grounding wire should not be less than 6 square millimeters. The weak current tray is uniformly connected to the grounding electrode of the weak current system.
5.The junction box of each information point and the distribution box in the pipeline system should be connected to the conduit with an effective grounding connection wire, and the grounding electrode of the weak current system of the single building should be connected.
6.In order to prevent electromagnetic interference, the distance between the weak current cable pipeline and the strong current cable pipeline should be more than 20cm apart, that is, the < 2kVA should be greater than 127mm;2-5kVA should be greater than 305mm;>5kva should be greater than 610mm.
7.All weak motor cabinets in the computer room are directly connected to the weak current ground terminal using 16mm2 multi-core insulated copper wire to ensure that the antistatic raised floor bracket constitutes an effective equipotential.
Introduction to the latest boutique information
This set of weak current data summarizes a large number of technical documents, 313 PPT schemes, 279 standard specifications, 60 design schemes, 119 drawing materials, 8 sets of construction drawings, 20 sets of bills of quantities, 20 construction organization designs, 69 visio topology diagrams and blocks, 54 excel**, complete construction process documents and acceptance documents, etc., which are very comprehensive.