What problems need to be paid attention to when choosing a polymer bridge?

Polymer cable tray has become an indispensable tool in our lives to support electricity safety, so what problems should be paid attention to when purchasing cable tray?

1. Selection of environmental factors: air corrosiveness, aesthetic requirements.

The use environment of polymer cable tray is more complex, and the performance is unstable, so the production materials of Wuhan cable tray should be considered first when choosing. Under normal circumstances, the cable tray made of high-quality steel plate is suitable, and the surface of this kind of bridge is electrogalvanized or sprayed with anti-corrosion treatment, the anti-corrosion performance can be enhanced, and it can better adapt to the needs of the working environment, and the use time is also longer.

If the environment used in the polymer cable tray has relatively serious corrosion, we recommend that you choose the cable tray made of aluminum alloy. Polymer cable tray can also be used in places with high requirements for fire protection, and materials such as fire-resistant or flame-retardant plates are added to the tray to improve the fire resistance of polymer cable tray.

Anti-electromagnetic interference performance is also a winning consideration when choosing a polymer cable tray, semi-enclosed or enclosed cable tray can reduce electromagnetic interference, such as trough cable tray, suitable for use in places with corresponding requirements.

2. Wire and cable requirements: the enclosed cable tray is suitable for laying computer cables, communication cables, thermocouple cables and other control cables of high-sensitivity systems; The ladder bridge is suitable for the laying of high and low voltage power cables.

3. Specification selection, size and number of loading cables.

4. Load performance.

5. Installation options: horizontal installation, vertical installation, turning (bending can be used), convergence (tee and tee can be used).

6. Cost. Polymer cable tray.

Factory reminder: now there are more cable tray manufacturers on the market, the market is in bad competition, when Party A does not stipulate the brand, in the selection of cable tray manufacturers, we should pay attention to whether the manufacturer has production capacity, whether the qualifications are complete, how the product process quality, and so on. The surface of the bridge should not be twisted, black, rusted, etc.

CQ1-T cascade cable tray is designed according to relevant data at home and abroad. It has the advantages of light weight, low cost, unique shape, easy installation, heat dissipation and good ventilation. It is suitable for the laying of cables with large diameters, and is suitable for the laying of high and low voltage power cables.

Polymer cable tray.

Polymer alloy cable tray is a new model of "replacing steel with plastic" in electrical engineering applications after building imitation polyvinyl chloride grease retardant cable trough pipe. The superior flame retardant, acid, alkali resistant physical and chemical properties of the raw materials are organically fused with special polymer materials and functional additives containing other characteristics, so that they have polymer alloy material products that meet various application occasions. It is not only energy-saving, environmentally friendly, but also in line with the concept of the environment.

The trough tray in the polymer alloy cable tray is a fully enclosed type, which is suitable for laying computers, communication cables, power cables, etc.

Unrivalled effectiveness in cable protection in heavily corrosive environments. The ladder and pallet bridge are improved according to the relevant foreign technologies, and it has the characteristics of light weight, strong load-bearing and unique shape.

Polymer alloy cable tray is in line with GJ's advocacy of "plastic instead of steel", "energy saving", "green environmental protection" and other related policies, with advanced and innovative design concepts, to develop a new generation of plastic instead of steel environmental protection products, is the first choice in the future construction engineering applications, has broad development prospects.

Due to the unique insulation performance of polymer alloy cable frame products, strong corrosiveness, high oxygen index, long service life and other characteristics, it has been recognized and applied in various fields and industries, and the product is especially suitable for civil construction, subway, mining, port, petroleum, chemical, coal, textile, electric power, machinery, transportation, shipbuilding, water treatment, pharmaceutical factory, papermaking, industrial and mining plants, new energy photovoltaic and wind power projects and other places!

The main advantages of the polymer bridge are that it is sensitive and changeable, and the environment can be adapted, but it also has its inherent limitations. The single-core cable mainly uses a variety of insulation materials, and the multi-strand copper wire is wrapped in the insulation layer as a conductor of current in a certain phase. A multi-core cable is a cable that is intact by twisting multiple insulated cores together and sheathed on the outer sheath.

The number of insulated cores of a power cable, usually isocore, and 4+1 and 3+2 cores. They all have the characteristics of strong overload ability, tap bento, and small footprint. Cables are divided into single-core cables and multi-core cables.

The so-called ordinary polymer bridge is a transmission and distribution system with electrical continuity that wraps several conductors in a metal shell through a reasonable and safe structure. Ordinary polymer bridges are generally divided into two types: dense insulation type and air insulation type. The air-insulated type has a simple structure and a large supply current; The dense insulation type has a compact structure and good heat dissipation.

The polymer bridge generally adopts the plug-in device tapping method. The so-called plug-in polymer bridge is to use the plug-in method to tap the power supply of the main line to the branch line, and there is a polymer bridge mouth every few meters, so the tap is very convenient.

However, the cable demand stops tapping on the spot, and the reliability is poor, even if it is a prefabricated branch cable, it has its defects. The obvious defect of the branch cable is mainly the need to customize the branch articulation equipment to the factory, which is usually used to open the tooth"c"type hoop. After a long time, it is also a question whether this kind of hoop can ensure the tightening force.

In addition, the branch head of the branch cable is expensive, so the prefabricated branch cable is still not widely used. When installing branch cables, it is necessary to cut off the power supply on the floor, and there is no need to cut off the power when installing the polymer tray, and only need to remove the polymer tray under the condition of no load. However, it is very risky to cut off the branch power supply of prefabricated branch cables, operating in a live condition.

Please click Enter a description.

It is made of a variety of different kinds of Li Tea's polymers, which are made by physical blending and chemical grease grafting through innovative preparation process, and the product has two characteristics: steel and toughness. Corrosion-resistant using a special formulation, this material overcomes the shortcomings of the original steel bridge that is easy to rust and corrode, and it is suitable for different climatic environments and chemical corrosive environments.

The specific gravity of the polymer bridge is one-third of that of the traditional steel bridge, and it has certain advantages in transportation, loading and unloading compared with the traditional steel bridge. It is innovatively made by formula technology, and all indicators meet the requirements of non-combustible materials, and the combustion performance reaches GB 8624 B1 level, and the product is automatically extinguished in 1 second from the fire. The polymer bridge is connected by double card slots, and the shape is beautiful and easy to install.

The steel bridge needs to be welded and locked with a large number of screws to complete the connection, and defects such as slag inclusion, burn-through, and arc pits will also occur during welding. Using a new generation of anti-corrosion and anti-aging materials, the product has strong anti-oxidation and weather resistance, and its service life is 5-10 times that of conventional cable tray in the general climate environment.

Common specifications and sizes of polymer bridge:

What are the weaknesses and shortcomings of the polymer bridgeThe specific gravity of the polymer bridge is one-third of the traditional steel bridge, and it has certain advantages in transportation, loading and unloading compared with the traditional steel bridge. It is innovatively made by formula technology, and all indicators meet the requirements of the regulations of non-combustible materials, and the combustion performance reaches GB 8624 B1 level, and the product is automatically extinguished in 1 second from the fire. The polymer bridge is connected by double card slots, which is beautiful in appearance and easy to install.

The steel bridge needs to be welded and locked with a large number of screws to complete the connection, and defects such as slag inclusion, burn-through, and arc pits will also occur during welding. Using a new generation of anti-corrosion and anti-aging materials, Xishipai products have the characteristics of strong anti-oxidation and weather resistance, and their service life is 5-10 times that of conventional cable tray in general climate environment.

The polymer bridge is divided into trough type, tray type and ladder frame type, which is composed of brackets, brackets and device accessories. When selecting, we should pay attention to whether all the parts of the polymer bridge are in line with the complete set of requirements of serialization, generalization and standardization. There is still a lot of knowledge about the polymer bridge, and the following Hebei Yanwu explosion-proof electrical appliances introduce how the polymer bridge should be accepted and prepared.

1. Whether the type, standard and quantity of cable crane and bracket are common with the order form, and whether the fastening accessories are accurate. It will be more useful to inspect according to these structures, but, together, we should also pay attention to these inspection details: 2. The type, standard and quantity of the polymer bridge must be common with the order form, and the raw materials and their thickness should be combined with the request of the brigade, usually when the polymer bridge is more than 300mm wide, the thickness of the steel plate is, and the thickness of the steel plate is greater than or equal to 2mm when the polymer bridge is 300mm wide and above, and the thickness of the connecting plate is the same as that of the polymer bridge.

3. Assemble the straight line grooves and components on the spot to see if the joints are uniform, and not greater than the type, standard and quantity of the polymer bridge components are not the same as the order, including the direction of the bending of the parts, and whether the orientation of the polymer bridge cover is accurate. 5. If there is a fire prevention request, the receipt of the fire protection file should be within the useful period to ensure that the quality of the fire protection products is qualified and reliable. 6. Whether there is mechanical damage to all linear grooves, components and hanging brackets, and whether the anti-corrosion of metal raw materials is uniform, intact, non-flowing and impermeable.

7. Whether the polymer bridge connecting plate and fastening accessories are accurate.

Preparation for the installation of the polymer tray.

1. If it is used in conjunction with the power polymer bridge, the power cable and the weak current cable should be separated by a partition on one side of each side. 2. Understand the basic situation (1) Load calculation: calculate the weight of the cable per unit length on the longitudinal section of the main trunk of the polymer bridge.

2) Determine the direction: according to the building layout plan, combined with the setting of air conditioning pipelines and electrical pipelines, convenient maintenance, and the density of electrical cable routing to determine the best route of the polymer bridge. Indoors, as far as possible along the building walls, columns, beams and floor erection, if the use of comprehensive pipe gallery erection, should be erected on one side or above the pipeline in parallel, and consider the down line and branch line to avoid crossing, if there is no other pipe frame borrowing, then need to set up (support) columns.

3) Determine the width of the polymer tray: according to the number of cables, the diameter of the cable and the spacing of the cable, determine the model and specification of the polymer tray, the length of the supporting arm, the length and spacing of the pillar, the width and the number of layers of the polymer tray. (4) Draw the flat and cross-sectional drawings of the polymer bridge, and the space map should also be drawn for the local parts, and the material list should be listed.

5) determine the installation mode: according to the setting conditions of the place to determine the fixed mode of the polymer bridge, choose the suspension type, upright, side wall type or mixed ballast type, the connector and fasteners are generally matching, in addition, according to the polymer bridge structure to select and fold the corresponding cover. 3. Weak current cables are combined with other low-voltage cables with polymer bridges.

, the selection of weak current cables of weak current systems with outer shielding layer should be strictly implemented to avoid mutual interference.