Device for sz-stranding
(57) Abstract:The invention relates to the field of electrical engineering and relates to the execution device for SZ-stranding conductive pie lived. The inventive device containing attatck, node twisting with two twisting sockets and reversible drive tube drive, twisting caliber and receiver, equipped with an intermediate disc brake elements mounted parallel to the plane twisting of the receptacles, which constitute the rotary cage. When this tubular drive is made in the form of two coaxial tubes, the inner of which is fixed and contains at the ends of the input and output gauges and the other mounted for rotation, twisting calibre installed sealing rollers and the wrapper. The technical result - the provision of twisting wires of the second Posiva conductive stranded pie lived with constant tension. 7 Il. The invention relates to the field of electrical engineering and can be used for SZ-stranding conductive stranded sector-lived power cables .The known device rosette twisting with tubular drive , sudeki.Their disadvantage is the lack of rigid centering lived first Posiva.Closest to the proposed invention the technical essence is the device rosette SZ-twisting with tubular drive in which the synchronously rotating two parallel mounted outlet from reverse drive . The device also includes attatck, distribution outlet, twisting the caliber and the receiver.The main disadvantage of this device is that it does not allow for rigid centering a shaped core of the first povia, as well as for the period of the reverse torsion receptacles twist the second Posiva with the constant tension of the twisted wires.The challenge is to develop devices SZ-twisting, allowing the twisted wires of the second Posiva with constant tension.The problem is solved in that the device for SZ-stranding conductive stranded sector-lived, containing attatck, node twisting, including distribution and twisting two sockets with reversible drive and tubular drive, twisting caliber and receiver, twisting outlet is made in the form of crates, NR is executed in the form of two coaxial tubes, the inner of which is fixed and the other mounted for rotation, and further comprises input and output gauges located on the ends of the inner tube, the sealing rollers and the wrapper is installed for twisting caliber.In Fig. 1 schematically shows a device SZ-twisting conductive stranded sector-lived.In Fig. 2 schematically shows a site SZ-twisting.In Fig. 3 schematically shows an intermediate disc brake elements.In Fig. 4 is a schematic representation of the brake element.In Fig. 5 is a schematic representation of the caliber of the guide pipe:
b) output.In Fig. 6 schematically shows the structure of twisting caliber.In Fig. 7 schematically shows the structure of the sector veins, section 95-120 mm2:
a) harvesting the first Powel;
b) core duchovney veins;
in) pie lived.In Fig. 1 device in the technological sequence contains attatches strand 1, udaciki wire 2, site SZ-stranding 3, the caliper twisting caliber 4, the vertical drive pie rollers 5, the horizontal drive sects is th mill stand 10, includes an internal guide tube 11, a tubular drive 12, the frame 13 and actuator 14. The inner tube 11 having an input gauge 15 and the output calibre 16, rigidly mounted on the frame 13. Another pipe drive 12 mounted coaxially relative to the tube 11 with the possibility of free rotation.Rotary stand 10 consists of two disk-outlets - input socket 17 and the output receptacle 18, the intermediate disk 19 with the brake elements 20 and tapered socket 21. Disks sockets 17, 18, 19 are connected by horizontal rods 22.The brake elements 20 are mounted on the intermediate drive 19 (Fig. 3). The brake elements 20 (Fig. 4) consists of a split die comprising a bottom 23 and top 24 Polyplastic, steel strap 25, the rubber strip 26. Strap 25 is mounted on two studs 27, when tightening the nuts 28 presses the two halves of the dies 23, 24 to one another.The unit SZ-twisting conductive pie veins works as follows: semiprivacy strand 29 of otdatsya 1 and two wire 30 with aldatzeko 2 retracted and pulled through the input figure caliber 15, the Central hole of the guide pipe 11, the output figure calibre 16 and twisting caliber 31 suppoae veins (Fig. 7a).Wire 33 with several aldatzeko 2 extend through the holes 34 of the distribution of the socket 35, the holes 36 of the input sockets 17, the holes 37 of the intermediate disk 19, the brake elements 20 of the disc 19, the holes 38 output receptacle 18, the holes 39 of the distribution cone socket 21.Wire 33, coming down with a tapered socket 21, gather in a bunch around the workpiece 32 in twisting the gauge 31. Then wire 33 and the workpiece 32 is directed, jointly, through the sealing rollers 5, 6, LineaMatic 7, rod 8 to a receiver 9.Holes 34, 36, 37, 38 and the opening 39 is located on the circle, i.e., at equal distance from the center of the disk. The number of holes corresponds to the number of wires extend 33.When forward movement of the wires 33 and the rotation of the cage 10 wire 33 perform complex movement, with some wire 33, located between the stationary distribution of the socket 35 and the input socket 17, form a spiral. When the left or right rotation of the cage 10 wire 33 entwine with uneven step surface of the tubular drive 12 in the form of left or right-handed helix. Thus, when the reverse rotation of the cage 10 wire 33 periodically rewound, rapadilino, slide on the surface of the tubular drive 12. The strength of the friction between the wire 33 and the outer surface of the tubular drive 12, creates additional tension wires 33.The number of spiral turns of each wire, wound on a tubular drive 12, varies from 0 to i/2, where i is the number of turns of the twisted wire core 40 in the same direction S or zBecause of this effort the friction when sliding wires 33 are changed from zero to maximum and back.While holding the wire 33 dies brake elements 20, form a uniform tension and accurately fixed position of each wire 33 at the entrance to twisting the gauge 31. The process of twisting the conductive pie lived is performed by moving the workpiece wires 32 and 33 at a constant linear velocity V, m/min, and reverse rotation of the cage 10 with frequency n.When starting the unit SZ-stranding included reversible actuator 14 of rotation of the cage 10, and drive the sealing rollers 5, 6, LineaMatic 7, rod 8, a receiver 9 (Actuator sealing rollers 5, 6, LineaMatic 7, rod 8 and receiver 9 are not shown).Reverse the actuator 14 rotates the cage is at 33 dies, compress Duchovny core 40 in sealing rollers 5 and 6 to the extent necessary. The process then SZ-twisting lead to the production speed V, m/min while rotating the cage 10 with frequency n.The unit SZ-twisting works as follows.When the right direction of rotation of the cage 10 and the longitudinal movement of the wires 33 in the area between the distribution outlet 35 and the input socket 17 of the wire 33 are twisted in a right spiral around the tubular drive 12. On the section between the input receptacle 17 and the output Jack wire 18 33 move in parallel tubular drive 12. The clamped wire 33 in the plates of the brake elements 20, passing through them, get a uniform tension.The area between the tapered socket 21 and twisting calibre 31 wire 33 with a uniform tension in a precisely fixed position roll in the direction of S around indianterminal workpiece 32.Then, when the direction of rotation of the cage 10 from right to left wire 33 on the section between junction socket 35 and the input socket 17 first spin up, take the straight-ahead position, then twist to the left spiral around the tubular drive 12. ekoi 18.Trapped in the dice brake elements 20 wire 33 receive uniform tension regardless of the reversal rotation of the cage 10.The area between the tapered socket 21 and twisting the gauge 31 is uniformly strained wire 33 are twisted around indianterminal fittings 32 in the z-direction At the exit of the twisted core of twisting 31 caliber, the core is sealed in the sealing pie rollers 5 and 6. Compacted sector core 40 (Fig. 7b) wrapped in LineaMatic ribbon and arrives at the receiver.The proposed embodiment of the device SZ-twisting allows you to twist the wire of circular cross section in mnogoprofilny conductive core, then, putting his seal in the rolls, to obtain a conductive core sector, twisted method, SZ.Sources used:
1. Boxier E. A., Kuzmin centuries, Shlyakhter, N.. Line for SZ - stranding communication cables. Cable technique. -1996, N 8-9, S. 49-51.2. U.S. patent N 4813223, H 01 B 13/02, 1989. Device for SZ-stranding conductive stranded sector-lived, containing attatck, node twisting, including distribution and twisting two sockets with reversible Phnom drive with the brake elements, installed parallel to the plane twisting of the receptacles, which constitute the rotary shaft, the tubular drive is made in the form of two coaxial tubes, the inner of which is fixed and contains at the ends of the input and output gauges and the other mounted for rotation, twisting calibre installed sealing rollers and the wrapper.
FIELD: multiple twin cables for communications in local network.
SUBSTANCE: proposed multiple twin cable designed to prevent vapor transfer when immersed in petroleum oil has internal and external sheaths that cover insulated signal-transferring conductors and are made in the form of helical structure. Core filler fills up core and spaces between signal transferring conductors. Core filler and internal sheath are made of vapor-tight material and fixed to insulated conductors so that they fill up all grooves and slots around signal transferring conductors. External gas-tight sheath can be provided to make it possible to immerse cable in petroleum oil for long time intervals without impairing its functional capabilities.
EFFECT: ability of preventing vapor transfer lengthwise of cable.
26 cl, 4 dwg
FIELD: electrical engineering; balanced high-frequency cables for data transfer.
SUBSTANCE: proposed cable has core formed by polyethylene or porous polyethylene insulated conductors twisted together to form pair and filler disposed between insulated conductors and cable shield covered with sheath on top. Used as filler are untwisted fibrillated polypropylene threads longitudinally disposed throughout entire cable length. In wiring this cable needs bending through very small radius (below ten-fold of cable outer diameter.
EFFECT: reduced capacitance and attenuation factor, enhanced stability of cable throughout entire operating frequency range.
1 cl, 4 dwg
FIELD: data transmission under very humid conditions, those including on board ships.
SUBSTANCE: proposed cable has sequentially arranged core incorporating at least two pairs of polyethylene covered stranded conductors, filler in the form of low-molecular rubber based sealing composition, shield, and sheath with mentioned filler in-between. This composition is, essentially, compound incorporating 100 parts by mass of rubber SKTN and 3-5 parts by mass of catalyst; the latter has 7 mass percent of γ-aminopropyl triethoxysilane and 93 mass percent of ethyl silicate; these pairs are placed longitudinally throughout entire cable length inside filler All air gaps are filled up (no water penetrates along cable).
EFFECT: reduced outer diameter at low attenuation constant and high near-end cross-talk attenuation throughout entire operating frequency band.
1 cl, 2 dwg, 1 tbl
SUBSTANCE: invention relates to the field of electrical engineering and is to be utilised for design of symmetrical communication cables within a shared network or structured cable systems. Concept of the invention is as follows: the symmetrical four-pair cable consists of cores with membranous-and-porous film insulation twisted into pairs and into a general lay contained in an outer sheath of a polymer material; insulation of each core within the porous layer and the membranous layer contacting each core is perforated along the whole length within each layer at an independent pitch.
EFFECT: reduction of dielectric loss and capacitive component of intra-pair interference.
FIELD: electric engineering.
SUBSTANCE: invention is related to cable technology, to symmetrical fire-resistant cables for transfer of high-frequency signals in communication systems, industrial automation and systems of fire protection alarms in nuclear power plants, in particular inside containment. Cable comprises at least one symmetrical pair of current-conducting strands insulated by fire-resistant organosilicic rubber and polyimide film, covering each of insulated strands, and separating them with single layer. At the same time film fixes insulated strands between each other, providing permanent symmetry of pair along cable length.
EFFECT: increased reliability, higher service life of fire-resistant symmetrical cable under conditions of operation inside containment of nuclear power plants, with provision of minimum level of losses and preservation of rated parametres.
SUBSTANCE: symmetric four-pair cable includes cords in polymer insulation, which are twisted in pairs with various pitches, with outer polymer sheath; one of the pairs is central in polymer dividing band; three other pairs are twisted around it, each of which is separated with polymer element the dimensions of which are restricted with diameter of the pair, and separating polymer band is put on central pair so that edges are overlapped throughout the length.
EFFECT: reducing mutual influence between pairs.
SUBSTANCE: symmetric unshielded 25-pair cable of category 5e with improved characteristics contains strands in polymer insulation twisted into pairs to form a common core with one pair in the centre of the structure while the other 24 pairs separated into four bundles, six pairs in each; introduced into each bundle is a triradial polymer separation element between each two arms whereof two pairs are positioned twisted together at pitches different from those of each of the two other pairs between other two arms; each bundle is enwrapped into a polymer perforated tape with edge overlapping along the whole cable length; all the four bundles are twisted together round the one central pair.
EFFECT: invention ensures decreased proximity effect pair and reduced mutual influence between the pairs.
SUBSTANCE: symmetric unshielded 25-pair cable of category 5e with improved characteristics contains strands in polymer insulation twisted into pairs to form a common core in lays as follows: three twisted pairs in the first lay, nine twisted pairs in the second lay and thirteen twisted pairs in the third pay in common polymer sheathing; each pair in the cable is twisted at a pitch different from that of the other pairs; in the first lay the pitch consists of three pairs with a triradial polymer separation element introduced separating the pairs of first lay from each other; between the first and the second lays a separation polymer tape is introduced with edge overlapping along the whole of the cable length; equally, between the second and the third lays a separation polymer tape is introduced with edge overlapping along the whole of the cable length; in the second lay a polymer separation element is introduced occupying an area of one pair in cross-section and along the whole length; introduced in the second lay are four similar separation elements, three of them separating each three pairs in the lay from each other while the fourth separating four pairs in the lay from each other along the whole of the cable length.
EFFECT: decreased proximity effect pair and reduced mutual influence between the pairs.
SUBSTANCE: balanced unshielded 25-paired cable of category 5e with improved characteristics includes polymer-insulated cords which are twisted in pairs, and external polymer sheath; polymer corrugated and perforated tube is arranged in the centre, and twenty five pairs are divided into five bunches, five pairs in each bunch; at that, to each bunch there introduced is five-beam polymer corrugated separating element between beams of which there arranged is one pair, and each bunch is laced into perforated band with covering of edges throughout the cable length, and all of five beams are twisted between each other around central polymer corrugated and perforated tube.
EFFECT: invention allows reducing the proximity effect of other pairs and mutual influences between pairs.
SUBSTANCE: invention relates to the field of electrical engineering and may be used for design of symmetric and optical communication cables within a shared network or structured cable systems. In a symmetrical four-pair cable, comprising strands in polymer insulation, a breaking cord and an outer polymer shell, each symmetric pair is separated from the neighbouring symmetric pair with an introduced hollow polymer tube, as a result of which a layer is created from four polymer tubes and four symmetric pairs, separated from each other with hollow polymer tubes at the same time, and this layer is twisted with a large pitch around the central hollow polymer tube, the outer diameter of which is equal to two diameters of the symmetrical pair, besides, each symmetrical pair is placed into a polymer perforated tape with coverage of edges along the entire length of the cable, and the hollow central tube and hollow tubes between symmetric pairs have identical external diameter.
EFFECT: invention reduces mutual impact between symmetric pairs due to their mutual arrangement by insertion of hollow polymer tubes.