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Tianjin wire recycling center__ Integrity based

update time: 10:36:09 source: SHUANGHENG cable recycling company

Tianjin wire recycling center__ Integrity-based

SHUANGHENG cable recycling company has won a good business reputation and the trust of many customers based on the principles of integrity-based, fair survival, reputation and mutual benefit. If you or your side has idle cables, please contact us and provide business commissions to those who provide business information. Welcome new and old customers to call us

compared with power cable lines, waste cable recycling overhead lines have the following significant advantages: ④ the equipment and materials used are simple, easy to process and manufacture, low price, and less engineering investment; ② Its structure is simple, convenient for construction and installation, and the project construction speed is fast; ③ All lines are placed on the ground for inspection, overhaul and maintenance; ④ The search and treatment time of waste cable recycling accidents is short, and the power outage time and power loss can be achieved; ⑤ The technical requirements and insulation requirements of the line are low and easy to. The reclaimed rubber of waste cables has a long history as the material of cable insulation layer. The rubber used for cable insulation is a complex mixture made of rubber as the main body and various additives. Its electrical, mechanical, chemical and physical properties largely depend on the composition and process flow. In general, rubber insulated cables have a series of advantages. It has high elasticity in a large temperature range and is resistant to gas, moisture Water, etc. have low permeability, some chemical stability and electrical properties, while rubber insulated cables are soft and flexible; However, due to its high cost, poor corona resistance, ozone resistance and oil resistance, it is generally only applicable to cables with high requirements for low voltage and flexibility, but synthetic ethylene propylene rubber can be used for cables with voltage levels of 35kV and below

transformers are not very long in our daily life, but we should know that our residents need transformers to convert their electricity. Transformer is a device that transforms AC voltage, current and impedance. The working principle of transformer is a static electrical appliance made of electromagnetic induction principle. It can be divided into pulse power transformer, mid cycle transformer, trigger transformer, shielding transformer and so on

1. What is transformer?

transformer is an electrical appliance that uses the principle of electromagnetic induction to transmit electric energy or signal from one circuit to another. It is an important component for electric energy transmission or signal transmission. Transformer is a device that transforms AC voltage, current and impedance. When AC current is connected in the primary coil, AC magnetic flux will be generated in the iron core (or magnetic core), causing voltage (or current) to be induced in the secondary coil. The transformer is composed of an iron core (or magnetic core) and a coil. The coil has two or more windings, of which the winding connected to the power supply is called the primary coil, and the other windings are called the secondary coil

2 transformer principle

a simple single-phase transformer is composed of two conductors. When one of the conductors has some non quantitative current (such as alternating current or pulsed direct current), it will produce a changing magnetic field. According to the mutual inductance principle of electromagnetism, the changing magnetic field will cause the potential difference of the second conductor. If the second conductor is part of a closed circuit, the closed circuit will generate current. Electricity is then transmitted. In a general transformer, the relevant conductor is a coil composed of (mostly copper) wires, because the magnetic field generated by the coil is much larger than a straight wire. Its principle is that the transformer is a device that transforms AC voltage, AC current and impedance. When AC current is connected in the primary coil, the iron core (or magnetic core) will produce an AC magnetic flux with a minimum value of 1s, so that voltage (or current) is induced in the secondary coil. The voltage vs and VP of the primary coil and the secondary coil are in direct proportion to the number of turns ns and NP of the two windings

as for the current or voltage ratio between the two sides of the transformer, it depends on the number of turns of the two circuit coils. The party with more turns has higher voltage but smaller current, and vice versa. If factors such as leakage are excluded, the voltage ratio of the two sides of the transformer is equal to the ratio of the number of coils on both sides, that is, the voltage is proportional to the number of coils

another example is to use the waste nylon fabric overstocked in the past to be reduced into caprolactam monomer by thermal cracking method, and then further polymerize the monomer into nylon rod, an engineering plastic, which can be used by the production department to make various mechanical parts. After electrolytic extraction of silver, the film base with the silver film removed can be made into cellulose diacetate plastic particles through chemical treatment, which can be used to produce various cellulose acetate products such as pen holders and knife handles, It can be seen that through the recycling of waste cables, factories, enterprises, schools, rural communes and teams can be promoted to excavate "strength, increase production and economy, run factories and stores diligently and thriftily, and run all undertakings thriftily. It can also educate the masses, inherit and carry forward the fine tradition of hard work and frugality, establish a glorious and shameful new trend of saving and waste, do a good job in the recycling of waste materials, and protect health, Prevent social hazards

therefore, the turn ratio of the primary coil and the secondary coil can be reduced, so as to increase or decrease the voltage. This property of the transformer makes it an important equipment for converting voltage. In addition, excluding the leakage factor, since the transformer complies with these two laws, it will not be an amplifier. If the voltage on both sides of the transformer is different, the current flowing through the two sides of the transformer will be different, and the difference between the two is inversely proportional. If the current of one side of the transformer is smaller than that of the other side, the side with smaller current will have larger voltage; vice versa. However, the power consumed by both sides of the transformer (that is, the two values of voltage and current of one side are multiplied) should be equal

3 function of transformer

when the power transformer transmits power to a long distance, if the transmission power is certain, the lower the voltage, the greater the current, the larger the cross-section of the conductor, and the higher the cost of line laying; If the voltage is controlled by a step-up transformer, the current in the line will be available, and the cost will be reduced accordingly. After the high voltage is transmitted to the user center, a step-down transformer is also needed to reduce the high voltage to various voltages for users to use. Therefore, transformer is a very important electrical equipment

the conductors of single core cables and split phase lead (aluminum) sheathed cables are circular, the insulation layer structure is that the cable paper tape is wrapped into a circle in concentric multi-layer, and the conductors of multi-core cables of 10kV and below are semicircular, elliptical or fan-shaped, and the insulation layer structure is the strap type. This structure is in accordance with gb6112 (15) and gb11548 (9). After wrapping a part of insulation paper (called conductor insulation) on each conductor, several conductors are twisted together, Then wrap a certain thickness of cable paper (called turnkey insulation or tape insulation), so that the insulation thickness between conductors is twice that of conductors; Between the conductor and the lead sheath is the conductor insulation thickness plus the turnkey insulation thickness. The oil impregnated paper insulation of oil filled cables for waste cable recycling requires higher electrical performance. The thickness of the paper is 0045, 0075, 0125, 0175mm, etc., and the tangent value of the dielectric loss angle should be greater than 00026. For example, the expected application support distance, data (baud) rate, and the difficulty and cost of future modification. Some students about LAN and video applications were invited to visit the research and Development Center for consideration. So far, for example, reinforcement, all LAN standards stipulate 625/125m multimode fiber or a part of 8 or 9/125ym single-mode fiber. Any LAN operating at a baud rate of up to 266m can reach a sufficient distance by relying on multimode fiber to span most parks. At that rate, the distance capability of multimode fiber LAN is enough to cover most buildings using single-point Management (centralized cabling) structure, Waste cable recycling in the case of long-distance, single-mode optical fiber can provide an effective solution for LAN at a higher rate. By using multi-mode single-mode converter, multi-mode signal can be transformed into single-mode signal, and even for some non-standard single-mode optical fiber LANs, this transformation is feasible

Tianjin wire recycling center__ Integrity based


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