CN106448899A - Attachable cable - Google Patents

Abstract

The invention provides an attachable cable. A part of the attachable cable is provided with a magnetic material layer used for attachment, and at least one side of the magnetic material layer close to the cable is provided with a metal film used for shielding, and at the same time, an insulation layer is disposed between the magnetic material layer and the core of the cable. The magnetic material layer, the side of which close to the cable is provided with the metal film, provided by the above mentioned wrapped part can be produced to be a wrapping accessory independently, and the wrapping accessory is disposed on the above mentioned wrapped part of the cable in a wrapped manner for the attachment. The attachable cable can be attached to any object having ferromagnetism, and because of magnetoresistive and magnetic conductive structure protection, the negative influence of the cable caused by increasing of electromagnetic induction phenomena is prevented.

Description

One kind can adhere to cable

Technical field

The present invention relates to one kind can adhere to cable.

Background technology

Electric wire is made up of one or a few soft wire, and outer bread is with light and soft sheath；Cable is by one or several Root insulating bag wire forms, and outside is wrapped with metal or tough and tensile outer layer made of rubber again.Electric wire is leading by one or a few softness Line forms, and outer bread is with light and soft sheath；Cable is made up of one or a few insulating bag wire, and outside is wrapped with metal or rubber again The tough and tensile outer layer of leather.Cable is general with electric wire to be all made up of core, insulating covering and protection three ingredients of crust.Conventional The characteristic of cable is as follows：The ethylene propylene rubber insulated chloroprene rubber sheath of CEF--, flame retardant power cable for ship.CVV-- polrvinyl chloride is exhausted Edge, insulated polyvinyl-chloride-sheathed marine flame-proof power cable.Oxygen cabin electric wire frequently with BV, BX, RV, RVV series electric wire, wherein：BV-- Copper core BLV, long-term 65 DEG C of temperature of permission, -15 DEG C of minimum temperature, running voltage exchanges 500V, direct current 1000V, fixation is laid in indoor and outdoor, can also can secretly apply surface.BX-- copper core rubber-insulated wire, 65 DEG C of maximum operation (service) temperature, apply In interior.RV-- polyvinyl chloride insulation single flexible cord, 65 DEG C of maximum operation (service) temperature, -15 DEG C of minimum use temperature, running voltage is handed over Stream 250V, direct current 500V, the back panel wiring as instrument and equipment.RVV-- copper core polyvinyl chloride insulation and sheath flexible cable, permit Permitted 105 DEG C of Long-term service temperature, running voltage exchanges 500V, direct current 1000V, and for humidity, mechanical protection has high demands, often moved Occasion that is dynamic and bending.In fact, " electric wire " and " cable " not strict boundary.Generally by few for core number, product diameter is little, knot The simple product of structure is referred to as electric wire, not the referred to as bare wire of insulation, other referred to as cables；Larger (big of conductor cross sectional area In 6 square millimeters) it is referred to as big electric wire, less (less than or equal to 6 square millimeters) referred to as little electric wire, insulated electric conductor is also called cloth Electric wire say so fairly simple it is readily appreciated that！！Cable typically has more than 2 layers of insulation, and majority is multicore structure, is wound on cable On disk, generally higher than 100 meters of length.Electric wire is usually single layer dielectrics, single, 100 meters of a roll, no drum.The common model of cable： VV represents：Polyvinyl chloride insulation (first V), pvc sheath (second V) YJV22 represents：XLP insulate (YJ), pvc sheath (V), steel band triumphant dress (22) model add " ZR " or " FR " for flame retardant cable (electric wire).Plus " L " is aluminum The model of line electric wire is simpler：BVV-- polyvinyl chloride insulation and sheath copper core wire, BV-- polyvinyl chloride insulation copper core wire, BYJ-- Copper core cross-linking polyolefin insulation electric wire, the soft-hearted line of BVR-- polyvinyl chloride insulation copper, BX-- rubber insulation copper core wire, RHF-- neoprene Rubber covers the soft-hearted line of copper.What diameter was little sometimes is " line "；What diameter was big is " cable "；Sometimes structure is simply " line "；Complex structure Be " cable ".But the expansion with range, a lot of kinds " having cable in line ", " wired in cable ".So there is no need strict Distinguish.On daily habits, people are called electric wire domestic cotton covered wire, power cable abbreviation cable, are referred to as in the present invention For cable.Electric wire mainly includes bare wire, winding wire, power cable, communication cable and optical cable, electrical equipment is used.Electric wire Cable is made up of conductor, insulating barrier, screen layer and protective layer four part.Conductor is the current-carrying part of electric wire, for conveying Electric energy, is the major part of electric wire.Insulating barrier be by conductor and the earth and out of phase conductor between electrically that This isolation, it is ensured that electrical energy transportation, is indispensable ingredient in electric wire structure.Screen layer, 15KV and above electricity Line cable typically has conductor shield and insulation screen.The effect of screen layer has：1st, it is because the electricity that power cable passes through Flow ratio is larger, can produce magnetic field around electric current, in order to not affect other element, so add screen layer can be this electromagnetic field screen Cover in cable.2nd, it is to play certain ground protection effect, if there is damaged, the electricity leaking in cable core Stream can play the effect of safeguard protection along shielding laminar flow such as grounded screen.If control cable, other have no difference, only It is that screen layer here is used to shield alien influence in much local, the particularly control cable of computer system, because Itself electric current is very weak, is afraid of very much the electromagnetic field effects in the external world.The effect of protective layer is to protect electric wire from introduced contaminants With the intrusion of moisture, and prevent external force from directly damaging power cable.During cable surface, cable bearer, extension should be adopted along total length Hook or lifting rope etc. are supported.Maximum outreach, should meet the following requirements：(1) bearing capacity of supporter and the outer of lossless cable are met Sheath and its cable core.(2) make cable energy marshalling each other.(3) adapt to arrangement requirement under engineering specifications.High in more than 35kV , preferably there is telescopic joint at the terminal of voltage cable, joint and cable connection position.Telescopic joint should be greater than cable and allows bending radius, and full The strain of sufficient metal sheath is without departing from feasible value.Do not set the joint both sides of telescopic joint, should rigidly fix or in suitable length Snake laying implemented by cable.The parts such as the fixture of fixing cable, band, bundle rope or cradling element, should have surface and smooth, be easy to The durability of installation, enough mechanical strengths and suitable use environment.The selection of cable component for fixing, should meet following rule Fixed：(1) in addition to AC single phase power cable situation, can adopt and mould gold through antiseptic flat steel clamps or nylon cable tie, plating Belong to band.Strong corrosive environment, should mould metal binding belt using nylon cable tie or plating.(2) the rigidly fixing of AC single phase power cable, The fixture of magnetic closed-loop path is not preferably constituted using aluminium alloy etc.；Other fixed forms, available nylon cable tie, rope.(3) must not Directly tie up cable with iron wire.The mechanical strength of AC single phase power cable fixed component, should check short-circuit electromotive force condition.Position When near the electric railway of DC traction, insulating cell is preferably set between cable and metal holder.Cable bearer should accord with Close following regulation：(1) smooth surface impulse- free robustness.(2) adapt to the durable firm of use environment.(3) meet required bearing capacity. (4) meet engineering fire protection requirement.Cable bearer except support single-phase operating current be more than 1000A AC system cable situation in addition to, Preferably use steel.In strong corrosive environment, from other materials cable bearer, should meet the following requirements：(1) ordinary stent in cable duct (arm-type support), can be selected for corrosion resistant rigid material system.(2) ladder of cable testing bridge composition, pallet, can be selected for meeting engineering The glass steel of condition flame retardancy.(3) when Technological Economy is comprehensive more excellent, available aluminium alloy cable testing bridge.Metal crane span structure system System, should have and reliably be electrically connected and be grounded.Using glass fiber reinforced plastic bridge, should separately lay Special grounding wire along crane span structure total length.It is located at The crane span structure system in vibration place, at the bolt connection to inclusion ground connection position, answers device spring washer.Require fireproof metal bridge Frame, reply hardware outer surface applies to meet the refractory coating that the relevant specification of country specifies.Simple fixed cable is simplest Method is exactly with " line card nail ".CABLE CLIPS is a plastic.Using PE material injection forming, elasticity is big, impact resistance, never Rupture.Product line is plug pin formula, and steel nail is directly attached on line card, can save man-hour in a large number, reduces construction cost.Using method It is to place the wires in card, with iron hammer, steel nail being nailed on wall can fix electric wire, the fixing electric wire of general house service is used.But Can not follow closely if in metallic plate etc. (as steel plate, the other plates containing iron and steel) or endlessly just want fixed cable in the occasion of nail CABLE CLIPS can not be adopted, at this moment will try to find some other ways.

Ferromagnetism, refers to the magnetic moment of adjacent atom or ion in material due to their interaction and in some regions Substantially arrange at same direction, when the magnetic field intensity that applied increases, the conjunction magnetic moment in these regions aligns degree can be with The phenomenon increasing to a certain ultimate value.I.e. in magnetic domain the unpaired electron spin of each atom tend to arranged in parallel.Therefore, In magnetic domain, magnetic is very strong, but material integrally may not embody ferromagnetism, because the magnetic orientation of different magnetic domain It is probably random alignment.If our additional small magnetic field, such as solenoidal magnetic field can make original random alignment Magnetic domain orientation is consistent, and at this moment we say that material is magnetized.After material is magnetized, very strong magnetic field will be obtained, here it is electric magnet Physical principle.After externally-applied magnetic field removes, material still can some magnetic fields remaining, in other words material " remembered " them and be magnetized History.This phenomenon is called remanent magnetism, so-called permanent magnet be exactly be magnetized after, remanent magnetism is very big.Up to the present, only four kinds gold Belonging to element is ferromagnetic more than room temperature, i.e. ferrum, cobalt, nickel and gadolinium；Five kinds of elements are had to be ferromagnetic under extremely low low temperature, that is, Terbium, dysprosium, holmium, erbium and thulium.Magnetic material, is ancient and the quite varied functional material of purposes, and the magnetic of material is early in 3000 Just recognized by people and applied before year, such as ancient Chinese native magnet is as compass.Modem magnetic materials are It is widely used among our life, for example, permanent magnet material is used as motor, is applied to the core material in transformator, as The magneto-optic disk that memorizer uses, computer magnetic recording floppy disk etc..It can be said that magnetic material and informationization, automatization, electromechanics one Body, national defence, the every aspect of national economy are closely related.And generally, it is considered that magnetic material refer to by transition element ferrum, cobalt, Nickel and its alloy etc. can directly or indirectly produce the material of magnetic.China is to find material magnetic phenomena in the world at first and answer Country with magnetic material.Just it is related to the record of natural magnetism material (as magnetic iron ore) early in the Warring States Period.11st century were just sent out The method of clear manufacture of intraocular permanent magnet material.1086《Mengxibitan》Describe making and the use of compass.1099～ There is the description that compass is used for navigation within 1102, be also found that the phenomenon of geomagnetic declination simultaneously.In modern age, the development of power industry promotees Enter metallicl magnetic material -- the development of stalloy (Si-Fe alloy).Permanent magnetism metal develops finally from the carbon steel in 19th century RE permanent magnetic alloy, performance improve more than 200 times.With the development of communication technology, soft magnetic metallic material is changed to thread from lamellar It is changed to powdery again, still can not meet the requirement of frequency expansion.The forties in 20th century, Dutch J.L. Si Nuoyike invention resistivity Soft magnetic ferrites high, that high frequency characteristics is good, and occur in that cheap permanent-magnet ferrite.The beginning of the fifties, with The development of electronic computer, Chinese American Wang An first by Rectangular hysteresis alloy element as computer built-in storage, soon by Rectangular loop ferrite memory magnetic core replaces, and the latter had once developed important effect to computer in 60～seventies.The fifties Just it is found that ferrite has the microwave property of uniqueness, make a series of Microwave Iron Oxide Elements.Piezomagnetic material is for the first time Sonar technique is had been used for, but the appearance due to piezoelectric ceramics, using having reduced during world war.Occurred in that later again and suppressed The rare earth alloy of magnetic.Amorphous state (amorphous) magnetic material is the achievement of modern age magnetics research, in invention rapid quenching technology Afterwards, solve belt making process within 1967, positive practical transition.Can make and can glue using the mutual absorption of magnetic material Attached cable, so this cable just can adsorb on magnetic material.

Content of the invention

The present invention solves the simple fixation problem of cable on having magnetic material, need not be using as existing CABLE CLIPS Such have destructive fixing device, designs a kind of cable that can adsorb in magnetic material, thus need not take and appoint So that it may realize the simple fixation in magnetic material for the cable, its technical scheme is as follows for what destructive measure：

By improving the foreskin of cable, foreskin local (need not be whole, otherwise cost is too high) of cable had magnetic material The bed of material is used for adsorbing, and magnetic absorption is a kind of good method realized and adhering to, and need not punch nail nail, does not have any destructiveness, Achieve that adhesion.This magnetic material layer at least has metal film to shield by cable side (also can be all) simultaneously, and electromagnetic induction is A kind of very important phenomenon of electromagnetic arts, produces some negative effects sometimes, so will be to the magnetic of this magnetic material layer Property carry out certain restriction and shielding, metal particularly ferrum can be very good shielding magnetic, and if be not added with this layer resistance magnetic gold It is possible to this magnetic material layer has in cable can produce faradic current during electric current thus producing to the signal of cable if belonging to film Interference, has added this resistance magnetic metal film it is possible to reduce this interference as far as possible.

Electromagnetic induction (Electromagnetic induction) phenomenon refers to the conductor being placed in change magnetic flux, meeting Produce electromotive force.This electromotive force is referred to as induction electromotive force or induced electromotive force, if this conductor is closed into primary Ioops, this is electronic Gesture can order about electronics flowing, and forming faradic current (induced current) michael faraday is typically to be identified as sending out in 1831 Show the people of induction although the work of Francesco Zantedeschi1829 may have been predicted to this.Electromagnetism sense Should refer to because magnetic flux change produces the phenomenon of induction electromotive force.The discovery of electromagnetic induction phenomenon, is in electromagnetism field One of greatest achievement.It does not only disclose the internal relation between electricity and magnetic, and is the mutual conversion between electricity and magnetic Establish experiment basis, be that the huge and cheap electric energy of mankind's acquisition opens road, be of great importance in practical.Electromagnetism sense Answer the discovery of phenomenon, indicate the arrival of a great industry and technological revolution.Fact proved, electromagnetic induction is in electrician, electricity Sub- technology, electrification, the extensive application of automatization's aspect have played important to the development promoting social productive forces and science and technology Effect.Electromagnetic induction is commonly called as the raw electricity of magnetic, is applied to electromotor more.Although electromagnetic induction can be utilized produces beneficial effect Really, but sometimes this effect is not that we want, and this just becomes negative impact.Air is the poor conductors of magnetic！Therefore, if Certain part isolation magnetic line of force in space, then can only using the good ferromagnetic material of magnetic conductivity, by the magnetic line of force space this A little by this good ferromagnetic material, the magnetic line of force is bypassed, thus can reach the effect of isolation！Good ferrimagnet, can To select common carbon steel, but reasonable material such as stalloy or silicon steel sheet etc. will have more preferable isolation effect！ First have to explanation:Physical knowledge teaches that, between a pair of magnetic pole, the magnetic line of force of S pole always points at N pole, does not have Any method can directly be cut off this magnetic line of force and point to, if centre has added a blocking-up plate, the magnetic line of force also can be from outlying ground Side gets around, because magnetic circuit has been gone the long way round that is to say, that peripheral magnetic resistance is big, will necessarily pass through middle blocking-up by some magnetic line of force Plate, directly goes to another pole.The problem being carried, can be gone to solve by such thinking：Without hesitation in periphery guiding magnetic circuit, in centre Cut-off magnetic circuit.The condition being provided using quizmaster, in magnetic non-conductor middle plus that a 5MM is thick, such as copper coin, aluminium sheet (this Kind of metallic plate purity will height, not iron content, metal impurities such as nickel), in periphery magnetic good conductor material such as soft iron, connection S, N pole, The most handy two pieces, because two block permanent magnets are two pairs of S, N poles.So minimum can be reduced to by penetrating the magnetic line of force blocking plate Degree.Generally just permissible with stereotype, the density of lead is big, can play the effect of the isolation magnetic line of force well.And price is economical. Certainly tungsten can also be used, the density of tungsten is also very big, and better, simply price is higher, good with titanium, and titanium is light, but effect is not As the first two.Here due to being used on foreskin, so adopting corresponding metal film, and non-metal board；Metal film also can divide Two-layer, internal layer (by magnetic material) is magnetic conductive metal, and outer layer (by core) is resistance magnetic metal.This magnetic material layer and cable wire Also have insulating barrier between core, have dielectric protection layer outside core, directly do not contact with magnetic material layer, this simultaneously also can be more preferable Stop the impact of magnetic.The above-mentioned magnetic material layer having metal coating by cable side for absorption also can be separately made jacket Adnexa, the foreskin fitting over described cable is used for adsorbing, thus can on the basis of existing cable additional using this Adnexa, can be used as needed during use, fit over where, with how many, how long, can be as needed To match.

The adhered to cable of the present invention being made according to technique scheme, can arbitrarily stick to and have ferromagnetic thing On body, therefore fixing very convenient.And due to employing, there is resistance magnetic, magnetic conduction construction protection, cable will not therefore increase electricity Magnetic induction phenomenon and produce some negative effect.Above-mentioned adhesion arrangement also can be independent from foreskin, so uses more Plus flexibly and conveniently, also reduce production cost simultaneously.

Brief description

Fig. 1 is a kind of hanging charging device schematic diagram.1. magnetic material layer 2. metal film 3. foreskin 4. core 5. insulating barrier；

The invention will be further described below in conjunction with the accompanying drawings.

Specific embodiment

Embodiment 1

One kind can adhere to cable (with reference to Fig. 1)

Foreskin 3 local of cable has magnetic material layer 1 and is used for adsorbing other ferrimagnets, and magnetic material layer 1 is at least There is metal film 2 to shield by cable side, between magnetic material layer 1 and cable core 4, also have insulating barrier 5 simultaneously.

Claims (3)

1. one kind can adhere to cable it is characterised in that：

The foreskin local of described cable have magnetic material layer for absorption and described magnetic material layer at least have by cable side Metal film shields, and also has insulating barrier between described magnetic material layer and described cable core simultaneously.

2. according to claim 1 adhere to cable it is characterised in that：

The magnetic material layer having metal film by cable side for absorption that the foreskin local of described cable has is separately made Jacket adnexa, the foreskin fitting over described cable is used for adsorbing.

3. according to claim 1 and 2 adhere to cable it is characterised in that：

Described metal film also can divide two-layer, and the inner layer metal film by magnetic material is magnetic conductive metal, and leans on the outer layer metal of core Film is resistance magnetic metal.