Yangzhou Benyuan Technology Co., LTD

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2021.09.15

What issues should be paid attention to during the transportation, loading, and unloading of cables?

What issues should be paid attention to during the transportation, loading, and unloading of cables? The silicone rubber wire editor will introduce you, and the main content is as follows: (1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly prohibited to push the cable reels directly from the vehicle. Cables should not be transported and stored flat. (2) Before transporting or moving the cable reel, it is necessary to ensure that the cable reel is firm, the cable is tightly wound, and the oil pipe between the oil filled cable and the pressure oil tank should be fixed without damage. The pressure oil tank should be firm, and the pressure indication should meet the requirements.

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2021.09.15

Precautions for quality acceptance of prefabricated branch cables

In order to ensure the accurate processing and manufacturing of prefabricated branch cables, and the product quality meets the requirements, the following items must be accepted for the cables. 1. Check the certificate of conformity, relevant technical documents, and product certification marks produced according to national standards. 2. Check whether the model, specification, length, and voltage level of the trunk and branch cables meet the design requirements. The appearance of the cable is intact, without flattening or twisting, and the sheath is free of aging and cracks. The cable head is tight.

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2021.09.15

How many projects can cable engineering be divided into?

How many projects can cable engineering be divided into? The editor of Teflon wire will introduce it to you, and the main contents are as follows: 1. Site transportation: including loading and unloading, transportation, and empty vehicle return of engineering materials from the warehouse to the construction site. Local engineering: including pavement excavation, tunnel, trench construction, etc. 3. Laying works: including laying, intermediate head fabrication, lifting the cover plate, burying the pipe, tidal correction, traction head fabrication, etc. 4. Electrical function test, etc. Plug engineering: including the production of oil filled cable plug heads, installation of oil supply tanks, automatic drainage, and signaling devices. 6. Grounding works: including installation of insulated joints, transposition boxes, protectors, and grounding boxes.

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2021.09.15

How to distinguish between good and bad wire quality?

How to distinguish between good and bad wire quality? The editor of Teflon wire will introduce it to you, and the main contents are as follows: 1. Conductor (1) The surface layer should be round and smooth, with a continuous and uniform coating. (2) The surface layer of the conductor should be free of defects such as triangular seams, burrs, cracks, kinks, folds, inclusions, scars, pits, mechanical damage, corrosion spots, etc. (3) The color should be uniform and bright, and there should be no traces of excessive oxidation. (4) The cross-sectional size of the conductor should be sufficient and not square. 2. Insulation and sheath (1) The surface layer shall be smooth and round, with uniform luster, and there shall be no visible bumps, bubbles, scorched objects, etc. (2) The thickness of the insulation (sheath) shall be uniform without deviation from the core. (3) There is no mechanical damage or flattening. (4) There should be no adhesion between the layers of material. 3. Others (1) The metal shielding layer should be continuous, stacked, tightly wrapped, without sharp corners, curls, leaks, and other phenomena. (2) The cabling pitch is appropriate and uniform. (3) The filling should be full and the cable should be rounded.

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2021.09.15

Precautions for optical cable construction

The manufacturer proposes the following precautions for optical cable construction: 1. Cleaning and commissioning Before laying optical cables, the pipe holes should be cleaned and tested section by section. During cleaning, special cleaning tools shall be used, and after cleaning, a test run inspection shall be conducted using a test run bar. The inner diameter of the plastic sub tube should be 1.5 times the outer diameter of the optical cable. When placing more than two sub pipes in a cement pipe hole, the equivalent total outer diameter of the sub pipe should be less than 85% of the inner diameter of the pipe hole. 2. Lay plastic sub pipes When threading more than two plastic sub pipes, if the pipes are of different colors, the ends may not be marked. If the pipes have the same color or no color, their ends should be marked separately. The laying length of plastic sub pipes should not exceed 300m, and it is required that plastic sub pipes should not have joints in the middle of the pipe. In addition, when laying plastic sub pipes, the ambient temperature should be between - 5 ℃ and+35 ℃ to ensure that their quality is not affected. The plastic sub pipe that has been laid should be fixed together with the cement pipe in a timely manner to prevent the sub pipe from sliding. In addition, the sub pipe orifice should be temporarily blocked to prevent foreign matters from entering the pipe. The plastic sub pipe shall have sufficient length in the inlet hole according to the design requirements. 3. Optical cable traction The primary traction length of optical cables should generally be less than 1000m. When exceeding this distance, segmented traction or adding auxiliary traction at the middle position should be adopted to reduce the cable tension and improve construction efficiency. In order to protect the outside of the optical cable from damage during traction, protective measures such as guiding devices or bell mouth protective tubes should be taken when the optical cable penetrates into a pipe hole, bends in a pipe, or intersects with other obstacles. In addition, materials such as neutral lubricants can also be applied to the outside of the optical cable as needed to reduce friction resistance during cable traction. 4. Reserved margin After the optical cable is laid, the optical cable should be placed on the specified supporting plate in the access hole or hand hole one by one, and appropriate allowance should be reserved to prevent the optical cable from being too tight. When the optical cable in the access hole or hand hole needs to be connected, its reserved length should meet the minimum value specified. 5. Joint treatment The optical cable shall not have a joint in the pipe hole in the middle of the pipe. When the optical cable has no joints in the manhole, it is required to bend the optical cable and place it on the cable tray for fixed binding. It is not allowed to pass directly through the middle of the manhole, otherwise it will not only affect construction and maintenance, but also easily cause damage to the optical cable. When optical cables have connectors, they should be protected with pipes such as serpentine hoses or flexible plastic pipes, and placed on a support plate for fixation and binding. 6. Blocking and marking The outlet end of the pipe hole where the optical cable is laid should be tightly sealed to prevent water or debris from entering the pipe. The optical cable and its connection shall be provided with identification marks, indicating the number, model and specification of the optical cable. In severe cold areas, antifreeze measures should also be taken to prevent optical cables from being damaged by freezing. If the optical cable may be damaged by collision, insulating plates can be installed on or around it for partition protection.

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2021.09.15

What are the functions of RF coaxial cables

Coaxial cables, also known as coaxial cables, are used to transmit radio frequency (RF) signals with low emission losses and provide protection against electromagnetic interference, allowing signals to be low-power transferred over longer distances. Coaxial cables are insulated, shielded, and sheathed by the core. The so-called coaxial cables have the same axis in these chapters There are many coaxial cables of the same type, each with its physical and electronic characteristics, designed for specific tasks, commonly used to perform cable TV signals along suburban streets and homes. Coaxial cables are used to transmit television signals and video equipment. They are also used to connect radio signals and receivers. Transmitters and antennas. Short lengths of coaxial cables are also used to connect equipment and test equipment. Signal generators Coaxial cables have been widely used to connect computer local area networks (LANs) and have replaced twisted pairs, while cable broadband is still popular and uses the same coaxial cables. Cable TV networks use most coaxial cable networks instead of fiber optic networks

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