|
Invention relates to electric engineering and may be used for introduction of electric conductors into a contaminated area, in particular, it is used in an explosion-proof chamber (EPC). The high-frequency jump comprises a metal body tightly installed in a wall. In the through hole of the body there is a glass insulator fixed tightly, being placed between two insulators, through which a central electric conductor passes, the middle part of length of which is made in the form of an electroconductive pin soldered into the glass insulator. In the body opening via additional insulators there is a screening conductor inserted, which forms a coaxial pair with the central electric conductor. |
|
|
Shielding of high-voltage cables Invention relates to shielding of high-voltage cable systems. A magnetically shielded cable layout is proposed, comprising at least two AC cables (201-203) comprising a spaced area (210-212) between two sections (213, 214) of parallel cables brought together, besides, such spaced area (210-212) serially includes an opening area, a widely spaced area and a closing area, and a system (1) of electromagnetic field shielding (EMF), laid on top of the above at least two AC cables (201-203), besides, the specified system of EMF shielding (1) comprises a conductor (2, 3, 11, 12), having two branches (2, 3), forming a middle section (4, 5) and end sections (7-10), besides, the width of the middle section is equal to the distance between AC cables in the widely spaced section (210), or is more than this distance, and width at the ends of end sections (7-10) is more than the distance between AC cables on the sections brought together, and less than the distance between AC cables in the widely spaced section, at the same time the specified conductor (2, 3, 11, 12) contains an internal electric tract (2a, 3a) and an external electric tract (2e, 3e), connected to each other (11, 12) at appropriate longitudinal ends. |
|
|
Device is designed for input electric power circuits into tight premises or volumes, for instance, into a containment area of a nuclear reactor. In a tight lead of a power cable comprising a metal cylindrical body with an insulating element arranged inside of it with biological shield, inside of which there is a reinforced insulating tube with a current-conducting rod stretching through it, ends of which are arranged inside insulators and are rigidly connected with their metal caps, and shells of insulators are rigidly connected to sunk flanges of the body, the current-conducting rod inside the tube is made with a wave bend, the minimum radius of which is calculated in accordance with the following formula: R=(4/k)(mbt)0.5. |
|
|
Electrical mounting device with mobile telephone charger Invention relates to mobile telephone chargers. Disclosed is an electrical mounting device with a mobile telephone charger, having a device base in the form of a device with concealed wiring and mounted into a standard socket for concealed wiring, said base having a charger, particularly a universal charger, and an electric terminal lead for AC mains, wherein the electrical mounting device on the front side has casing (10) in the form of a pocket for vertically inserting a mobile telephone, and in the bottom region formed by the casing of the inner cavity there is an area with an interface device for contacting the charging socket of the mobile telephone. |
|
|
Connection device for electric junction boxes Connection device for electric junction boxes, including a coupling element, which may be inserted into the first hole of the first wall of the first box and into the second hole provided in the second wall of the second box connected to the first box. The ring gasket is installed around the coupling and is arranged between two walls. The coupling has the first end provided with a plate, which is internal to the specified first box, and the second end provided with an adjacency device, which is engaged with the inner side of the second wall. Insertion of a wedge-shaped element, which is used between the plate and the first wall, gradually moves the plate from the inner side, at the same time it presses the walls to each other and compresses the gasket between them. |
|
|
Clip consists of case 1 with hole 14 for conductor 3 and contact lug 2. It has extra drain hole with d=1÷20 mm inside variable-cross-section transition of case 1 to contact lug 2. At production of case 1 from standard round pipe or from special section, wall 5 if drain through hole 6 is located at distance n1=0÷80 mm measured from point 7 whereat said variable-cross-section cavity 8 of case 1 transition to contact lug 2 ends. At production of case 1 from the bar, wall 9 of drainage hole 10 is located at distance n2=1÷35 mm measured from 11 whereat conical part 12 of cavity 13 of variable-cross-section transition of case 1 to contact lug 2 ends, said conical part being formed at machining of hole 14 for conductor 3 in clip case 1. |
|
|
Group of inventions relates to a supporting device for an overhead transmission line. Supporting device (3, 33) with support frame (17, 41) with at least two support bars (19, 47), on the end of which one retaining element (23, 53) is located to receive strand wire (11, 51), and with retaining insulator (15, 45) passing in longitudinal direction, which is located between support bars (19, 47) and which has free end (13, 43) to be attached to traverse (7, 37) of a mast; with that, support frame (17, 41) has such dimensions that support bars (19, 47) project in longitudinal direction above the end of retaining insulator (15, 45). Besides, the invention relates to assembly (1, 31) for arrangement of the wire of the overhead transmission line, which includes this supporting device (3, 33). |
|
|
Trolley-type device of power transmission tower protection from birds Device features long housing 1 out of flexible dielectric material with arched cross-section, with pairs of opposed holes 3 in housing side walls 2, and dielectric housing mounting elements in the form of clamps 4 passing through each pair of opposed holes 3. |
|
|
Trolley-type device of power transmission line protection from birds Device includes plate 1 out of flexible dielectric material in the cross form with four perpendicular shortened beams 2, 3, 4, symmetric against an axis passing through two opposite beams 3, 4, one of which is shorter and thinner than the other. Plate 1 features at least ten orifices 5, 6, four of which are made in beam 3, located in two pairs adjoining its sides, and six other orifices are adjoining protruding angles of other beams 2, 4. In addition, device includes dielectric fixation elements 10 for plate 1, passing through each pair of orifices 5, 6 opposing each other when the plate 1 is folded by the said symmetry axis. |
|
|
Mobile current generator for ice melting on wires of overhead transmission lines Application: in the field of electric engineering. A mobile current generator comprises an electric energy source in the form of two diesel generators of alternating current, an alternating current rectifier, conductors with terminals to connect it to the overhead transmission line wires and bus lines to connect wires of the overhead transmission line in the span between the supports as per an ice-melting scheme, at that by means of a semiconductor converter with a control circuit ensuring a mode of the electric energy source the mild operation mode is achieved for the diesel generators, the semiconductor converter provides the preset constant current for ice melting notwithstanding electrical resistance of the wire circuits and earthing circuits and its circuit design ensures ice melting at the section equal to the length of two spans for the overhead transmission lines on phase wires and the lightening protection cable, including design of the lightening protection cable with earthing made at each support. |
|
|
Method for automatic reclosure of overhead transmission line at glaze ice melting Short-circuited section of an overhead transmission line is defined, the total load and time period since the melt starting up to the fault interception is measured for the wire at this section and automatic reclosure for the line is permitted when certain conditions are met. |
|
|
Gland for electric cables comprises the main part made of a resilient material; a through hole which passes through the main body in a longitudinal direction and forms an integral part of the cable socket to be insulated; at that the longitudinal section passes through the gland body and connects the through-socket to the external part thus ensuring the cable connection to the through-socket by virtue of resilient elasticity of the gland material. |
|
|
Invention is related to electric engineering, and namely to spiral tension clamps intended for fixation of wires and cables of overhead transmission lines. The spiral tension clamp is made as spirals wound into a strand and consisting of at least two branched wound onto the wire or cable and forming in the middle part a U-shaped loop with an eye inserted into it and fixed through connecting elements to the line support equipped with a protector made as coiled wires or ribbon coils and mounted at the U-shaped loop side at a section of the wire or cable free from wound strands. |
|
|
Device to remove ice and snow from overhead wires Proposed device comprises power electronic switch (1), integral local circuit reflectometer (2), current HF pulse generator (3), identical galvanically-isolated generators of high-power currents pulses (4.1-4.n), quantity n of the latter corresponding to the quantity of controlled overhead lines connected with power electronic switch. Besides, integral local circuit comprises controller (5) connected with reflectometer (2), computer-aided dispatcher workstation with computer (6) and light panel (7). |
|
|
Device for cables protection from snow sticking, icing and large wave actions Application in the field of electrical engineering. The device contains a shaped flexible fully open or fully closed shell with a slot inside, wherein there is a flexible strong shell-bearing plate, a cable is placed inside the shell, at that it is clamped by clamps at several points along the whole its length and these clamps are interconnected in each set by rigid and strong ties. Whereat the clamps are interconnected by rigid and strong ties similar or different in length with similar or different gaps in between. At that both clamps and shell are made of mom-conducting material. |
|
Method of linear spiral armature manufacturing Method lies in processing of rigid members made as threads (metal wires with protective coating or without it, non-metal rods, etc.). Wire with diameter from 0.1 mm up to 24 mm are unwounded from coils, cut into sections, at that a spherical shape is provided to ends of the cut sections, the cut sections are collected into bundles and fastened into a strand with length determination of the strand middle part, the strand is twisted in turns with their number from 1 up to 150 turns; the middle part of the strand can remain unwind for certain cases of application for the manufactured linear spiral armature; then end parts of the strand are shaped as spiral with a regular pitch and diameter, or with an alternating pitch and diameter or with a regular pitch and alternating diameter and vice a versa. Length Lm of the strand medium part is defined from the below ratio: Lm=(0.05÷3)·(L1+L2/2), where L1 is the strand length measured from the left end of the medium part up to the left end of the strand in a ready-to-use article while L2 is the strand length measured from the right end of the medium part up to the right end of the strand in a ready-to-use article respectively. |
|
Method for manufacturing of composite support module for power transmission line Fibre filler is impregnated with polymer base. A composite support module is moulded of the impregnated fibre filler. After holding an alumina coating is applied onto the hardened surface of the module. Epoxy-diane resin is used as the polymer base, aluminosilicate fibreglass is used as the fibre filler, and acryl-based alumina suspension with a fire-retarding agent is used as the alumina coating. A substance from the group of alumina tryhydrate, martinal, apyral, boehmite, ammonium polyphosphate or a synergetic mixture of at least two substances from the specified group is used as the fire-retarding agent. Also a mixture of melamine cyanurate with ammonium polyphosphate can be used as the fire-retarding agent. |
|
|
Method and apparatus for protecting object from undesirable precipitation Invention relates to safety systems and can be used to protect different objects, for example power lines, building cranes etc. The method of protecting an object from undesirable precipitation involves generating vibrations of the object using a generator with a radiator designed to vibrate the object and separate undesirable precipitation from the object. The generator with a radiator used is a device which is configured to blow at least one charge and using the blow energy to vibrate the object without its breakdown. The invention describes different versions of the device according to the disclosed method using charges in solid, liquid and gaseous fuel with different principles for blowing thereof and use of energy of the blown charges. |
|
Body (1) for connection and layout of communication cables with a connecting part, hollow elongated cylindrical elements and an attachable part includes at least one board (2) for cables input and at least one attachable part (8). At the board (2) for cables input there is at least one connecting part (3) and at least one hollow elongated cylindrical element (801) purposed for the communication cable (502) passing through the board (2) for the cables input and incoming to the body (1) for connection of communication cables. The communication cables (502) passing through the hollow elongated cylindrical elements (801) form waterproof structures by means of elastic shrinkable tubes and the attachable part (8) and the communication cables (502) passing through the connecting part (3) and the communication cables incoming to the body (1) for connection form the waterproof structure by means of the first part, the second part of their combination, at that the first part is waterproof due to mechanical means while the second part is waterproof due to elastic shrinkable tubes. The attachable part (8) may form the waterproof structure by means of connection to the connecting part (3). The present invention allows elimination of many drawbacks of waterproof facilities in the known bodies for connection of communication cables. |
|
Clamp comprises a body 1, having a chute 6, a threaded hole 11 and a hole 7 for fixation of an elastic damper element in it. A plate 2 comprises chutes 8 and 9, made with radii R4 and R5, and an oval hole 10. The chute 6 is made with radii of curvature of its surface R1=(0.51÷0.55)d1max, R2=(0.43÷0.53)d2min, R3=(0.52÷0.56)d2max, where d1max - maximum diameter of a wire or a rope from the group of the ones installed in the damper with the plate 2 of smaller radius of the chute 8, d2min - minimum diameter of the wire or the rope from the group of the ones installed in the damper with the plate 2 of larger radius of the chute 9, d2max - maximum diameter of the wire or rope from the group of the ones installed in the damper with the plate 2 of the larger radius of the chute 9. Centres of radii R1, R2, R3 are arranged on an inclined straight line 12, stretching in parallel to the longitudinal axis 13 of a threaded bolt 3 and at the angle α, equal to 12° to 25°, to the horizontal plane. Internal surfaces of chutes 8, 9 are arranged along the radii R4=(0.505÷0.55)d1max and R5=(0.51÷0.56)d2max, the centre-to-centre distance A is accepted as equal to A=d1max+d2max+dbolt+(0.5÷3) mm. Surfaces of the body 1 and the plate 2 in areas of transition 15, 16 from one plane to another one are made according to the radius R6, the thickness of the frame body 1 in the place 17 of bolt 3 installation is equal to n=(1.1÷1.8)dbolt, the plate 2 in the place 18 is made with thickness of n3=(0.95÷1.4)dbolt with a ledge 19, height n4 and width B=(2.6÷3.5)d of the bolt. |
|
Wire spacer fit for use in protective cover for spliced cable junction Spacer separating wires in spliced multistrand cables in the protective cover for a spliced cable junction contains a core and a variety of separating elements coming from the core to outside and forming a variety of spaces for receipt of jointed wires. At least some of the separating elements are fixed individually to the core, at that the number of the above spaces for receipt of jointed wires can be changed by changing the number of separating elements fixed to the core. |
|
Busbar system with first and second wires of bundled phase Invention is related to busbar system. Busbar system has a section (3) of collecting buses. The section (3) of collecting buses passes along the longitudinal axis (2) and is surrounded by an enclosed casing (1). The section of collecting buses has the first and second wires (4, 5, 6) of bundled phase. There is a gap (7, 8) between the wires (4, 5, 6) of bundled phase. The wires (4, 5, 6) of bundled phase in their cross-section limit a circular enveloping line. The wires of bundled phase are interconnected inside the enveloping line by braces. |
|
Medium and high voltage sealed cable penetration and its protection Invention is related to the field of electric engineering and namely to a sealed cable penetration used in cable systems. Medium and high voltage sealed cable penetration for containment of nuclear reactors contains at least one electric wire, wherein gaps between separate electric wires and/or other conducting materials in the penetration are filled with hardening insulating mix of homogenous structure. Protection of the sealed cable penetration contains an inner element formed by a layer of lead and an inner element formed by a layer of the homogenous mix. |
|
Invention is related to a flat power cable which embodies at least one core containing an electrical conductor insulated by an insulating layer and, as an option, telecommunication conductors such as fibreglass, etc. which can be called lines. The flat power cable has at least one element for protection from extension/ compression, a connection system connected to external surface of the cable shield and a number of magnets connected to the connection system. |
|
Device for arrangement of at least one line and system of wall penetration for at least one line Invention relates to a device for laying pipes, cables or wires through walls or partitions. The device comprises a line enclosing channel structure, a clamping device, a mounting base plate. The channel structure is designed for insertion into the wall opening and comprises at least one compressible sealing portion, which is driven to the active sealing state and passive mounting state with the clamping device, with the help of which the sealing portion for sealing against the inner side of the opening may be actuated into the sealing state. The mounting base plate is designed to set the position of insertion of the channel structure in the axial direction of the opening. The mounting base plate is connected to the channel structure with a hinged joint, so that there are several angular positions between the mounting base plate and the channel structure. The opening sealing system comprises a pair of proposed devices, one of which is located at one through end of the opening, and the device - on the other through end of the opening. |
|
Connective contact element (1, 1a, 1b) has the first and second connective contact sections (3, 4). Connective contact sections (3, 4) are interconnected through the central section (5). The central section (5) has decreasing area (16, 16a, 16b), at that this decreasing area (16, 16a, 16b) has tapered lateral surface. In the lateral surface there is at least one depression (10a, 10b, 10c, 10d). |
|
Communication cable with fabric sleeve Communication cable (11) is provided with a pliant sleeve (12, 21, 31) to allow it to be more easily inserted into a cable conduit. One form of the sleeve (12) has hooks (14) and loops (15) connected to each other so that the sleeve (12) can be connected to the cable (11). Another form of the sleeve (21) is spring-loaded to connect to the cable (11). A third form of the sleeve (31) has an adhesive (33) which attaches the sleeve (31) to the cable (11). |
|
Apparatus for sealing end of cable sheath Apparatus for sealing the end, which is designed for laying a cable in a cable sheath, has a clamping structure with a receiving inner space and an elastic sealing bushing inside the receiving inner space for receiving the end of the cable sheath, having two cylindrical sections of an inner loop which can be displaced relative to each other in the axial and radial direction in order to form a peripheral sealing surface for the cable sheath and other peripheral sealing surface for the cable; a V-shaped narrowing of the inner loop is formed between the sealing surface for the sheath and the sealing surface for the cable. |
|
Device to remove icing deposits from wires Device comprises twisted cylindrical springs (2) installed on a wire (1) with a gap with aerodynamic elements (3) and weights arranged asymmetrically to the wire, ends of springs are screwed into circular permanent magnets (4), facing each other by identical poles, aerodynamic elements are made in the form of light plates of various dimensions, installed in the middle part of springs and axial holes wound on them, and asymmetric weights are bolted connections from bolts (6) and nuts (7), installed in holes (8) in the peripheral part of the plates. |
|
Overhead power transmission line Line is equipped with a facility of anti-icing protection, including movable elements (2) installed on a wire (1) for mechanical removal of deposits, made in the form of a system of closed frames of extended elliptical shape, freely placed onto a wire and hanging down. The frame is bent from a section of an elastic fluoroplast insulation for wires. The cavity (3) of each tube is partially filled with ferromagnetic powder (4). Ends of each tube are inserted into each other, connected with a layer (5) of mastic and joined in the middle part of the sides with an elastic thread (6). |
|
Device to pull in cable into existing pipe network Device to pull in a cable into an existing pipe network comprises a flexible element (2), stable in longitudinal direction, which is designed to pull into a pipe zone of the pipe network, a head part (1) placed onto the flexible element, which is made as capable of deviation for passage through zones of pipe bend, a joint part (3), which is made as capable of placement onto the flexible element (2) and is designed for coupling with the cable to be pulled in. The head part (1) comprises the main body (4) of oblong shape, which is made as capable of deviation from the straightened position into the bent position. The main body (4) is equipped with guide elements (15), with the help of which at least one traction element (14) is guided, which is at the distance from the axis of the main body (4) bend. One end of the traction element (14) is retained with one end in the end zone of the main body (4), while the other end is retained in a driven linear drive (13), which is fixed in the other end zone of the main body (4). In the end zone of the head part (1) opposite to the flexible element (2) there is a source of light (17) and a camera (18). |
|
Cable channel for installation of one or more optic fibre communication lines comprises a solid structure that includes an oblong body, containing a tubular part with the first lengthy hole formed inside of it and generating the first pipeline and the support shelf extended along the body length and containing adhesive base on its mounting surface. The cable channel in part of its length includes an additional fibre channel formed separately from the first pipeline to install an additional optic fibre. The specified additional channel comprises the first external fibre channel extended along length of the body at the outer side of the tubular part and made as capable of detachable grip of the additional optic fibre. |
|
Clamp consists of boat 2, suspension 3 and wire clamping mechanism 1 in the form of L-shaped levers pressing wire 1 to chute 12 of boat 2. Suspension 3 is hinged to boat 25. Sizes of clamping elements are chosen from certain ratios. Boat 2 is made from non-magnetic alloy providing openness of a magnetic circuit of the clamp and reduction of losses for reversal of magnetisation. In a version of a clamp with overvoltage suppressor, boat 22 is provided with eye lug 24. In the clamp, as a rule, spiral protector 30 of aluminium or aluminated wires is mounted. The clamp included in a set of suspension of wires in a split phase has vertical bracket 31 with horizontal projections 32, and arms 33 with trunnions 34 engaged with cavities 35 on side surfaces 36 of boat 37. In trunnions 34 a provision is made for inserts 38 to prevent disconnection of brackets 31 from boat 2 at vertical drawing of wire 1. |
|
Lining cover plate of electric device Invention relates to a lining cover plate (2) of an electric device (1), comprising at least one opening (22, 32) for access to at least one functional part (5) of the electric device and formed by means of imposing of a rear assembly plate (20, 30) including at the back the facilities for installation on a bracket (4) of the device and a front finishing plate (10) onto each other, which gives attractive appearance to the specified lining cover plate. According to the invention the rear assembly plate comprises on its front side a seat (24), where the specified front plate fully enters so that the front side (11) of this finishing front plate is arranged aflush or is slightly away from the front side (21) of the specified assembly rear plate. |
|
Explosion-proof drum for cable winding Explosion-proof drum for cable winding comprises a unit (1) of the main shaft, a unit (6) of contact rings, conical roller bearings (2) and a unit (4) of the drum body for cable winding. The explosion-proof cavity (3) is placed inside the unit of the main shaft. The explosion-proof cavity is arranged at one end of the unit of the main shaft and at the end of the explosion-proof drum for cable winding. On the unit of the main shaft there is a pair of conical roller bearings. |
|
Distribution box, in particular, for lighting cables in tunnels Distribution box, in particular, for lighting cables in tunnels includes a body equipped with a cover. The body comprises an electrical socket. A connection device inside the body connects an electrical socket with a pair of supply wires of a power supply line, which is carried out with the help of the distribution box. The connection device includes one or more cut-in contacts. Each cut-in contact engages with the appropriate supply wire, not cutting it. At the same time each cut-in contact comprises multiple sharp ledges arranged along the direction of the appropriate connected wire and distant from each other in the longitudinal direction. |
|
Intergrated apparatus for compensation of reactive power and melting ice cover (version) Apparatus has a three-phase bridge converter on fully controlled semiconductor rectifiers, which are shunted by anti-parallel connected diodes, a capacitor bank at the direct current side, a first three-pole switch and two series-connected three-phase chokes, one of which is connected in parallel to a second three-pole switch, at the alternating current side. According to the first version, the capacitor bank in reactive power compensation mode is connected by contacts of a third three-pole switch, which are open in ice melting mode, to emitter (collector) leads of rectifiers of the converter which in that mode are connected through a fourth three-pole switch to wires of the overhead power line for controlled melting of ice with alternating current. According to the second version, the capacitor bank in reactive power compensation mode is connected by contacts of the third and fourth three-pole switches, which are open in ice melting mode, to emitter and collector leads of rectifiers of the converter which in that mode are connected through fifth and sixth three-pole switches to wires of two overhead power lines for simultaneous controlled melting of ice thereon with alternating current. |
|
Integrated apparatus for melting ice and compensation of reactive power Integrated apparatus has two three-phase bridge converters on fully controlled semiconductor rectifiers, which are shunted by anti-parallel connected diodes, a capacitor bank at the direct current side of the converters, a first three-pole switch and two series-connected three-phase chokes, one of which is connected in parallel to a second three-pole switch - at the alternating current side. When melting ice, the first converter operates in a controlled rectifier mode and the second converter operates in self-contained voltage inverter mode, the output of said inverter being connected through a third three-pole switch to wires of the overhead power line which are closed at the opposite end, for simultaneous melting of ice thereon with low-frequency alternating current, where the inductive component of the resistance of the wires almost has no effect on the effective melting current value. |
|
Apparatus for compensation of reactive power and melting ice cover Apparatus has bidirectional high-voltage thyristor valves (1, 2, 3) connected in series to reactive elements (chokes or capacitors) (4, 5, 6). Switching from the reactive power compensation mode to the ice cover melting mode is carried out with two switches (7, 8). To this end, points of connection of the reactive elements (4, 5, 6) and thyristor valves (1, 2, 3) are connected to a three-phase mains supply A, B, C; the free terminals of said valves (1, 2, 3) are connected through contacts of the first switch (7) on a delta circuit to free terminals of the reactive elements (4, 5, 6), and through contacts of the second switch (8) to wires of the overhead line for melting ice cover. |
|
Method for controlled melting of ice on overhead power lines with alternating current Invention can be used at high-voltage substations which require melting ice on wires of overhead power lines. Controlled melting of ice on overhead power lines is carried out with low-frequency current generated by a three-phase self-contained voltage inverter, and the effective melting current value is set and maintained at the required level by varying supply voltage of the inverter. Melting is carried out simultaneously on three wires of the overhead power line, which are connected to output terminals of the three-phase voltage inverter and shorted at the opposite end of the line. The line performs the function of a three-phase load of the inverter with Y phase connection. |
|
|
Method of preventing icing of conductors Method of preventing icing of an electric conductor involves depositing a hydrophobic coating on the conductor lying between fastening points thereof; the conductor is subjected to mechanical action with frequency of 5-20 Hz by a vibration generator placed on the conductor in the middle between points of fastening the conductor; and the hydrophobic coating is deposited by placing the conductor in a surfactant from the class of aliphatic amines, e.g. octadecylamine or rofamin T. The surfactant used can be an aqueous emulsion of a surfactant from the class of aliphatic amines, e.g. octadecylamine or an ethanol solution of a surfactant from the class of aliphatic amines, e.g. octadecylamine. A hydrophobic coating 4 is formed on the surface of the conductor, said coating being formed by depositing onto the conductor a substance which contains a surfactant from the class of aliphatic amines. Said substance can be an aqueous emulsion of an aliphatic amine or solution thereof in ethanol. |
|
Sealed fire-resistant cable transit In the device, the heat-conducting metal connection between the housing and the cover of the transit is provided at only one end of the transit. In order to form a heat-insulation gap between the housing and the cover, said gap being divided into two air gaps by a heat-reflecting shield placed therein, the transit is closed at the other end by a layer of a fire-resistant seal which is a continuation of the end sealing of the housing, the length of which is shorter than the length of the cover by the thickness of said layer. |
|
Device for removal of ice coating from wires of overhead transmission lines Device for removal of ice coating (1) from wires (2) contains an element (3) for pulsed shaking up of wires (3); it is actuated by weight of coating on it; it is in-built into mechanical circuit of wire suspension to insulator (4) that consists of the hook (5) is inserted freely by threaded part (6) into through hole (7) in support (8) and fixed by a screw nut (9). The element for pulsed shaking up of wires is made as a spherical buckling membrane in a hole (10) between nut and support and faced to the support by its concave side. |
|
Device for removal of coating from wires of overhead transmission lines Device for removal of ice coating (1) from wires (2) contains a unit for pulsed shaking up of wires inserted into mechanical circuit of wire suspension that consists of suspension insulator string (3) fixed by a hook (4) to horizontal cross arm (5) of anchor support. Unit for pulsed shaking up of wires is made as cavity (6) in cross arm with two permanent magnets (7) and (8) placed in it; one of magnets is screwed onto threaded end (9) of the hook while the other magnet is fixed rigidly in cavity and its position can be regulated by screw (12). Gap between magnets (7) and (8) under weight of coating ensures pulsed shaking up of the wire and removal of ice coating respectively. |
|
Device for removal of ice coating from wires of overhead transmission lines Device for removal of snow slush and ice coating (1) from wires (2) includes an element (3) for pulsed shaking up of wires which is activated by weight of coating; it is in-built in mechanical circuit of wire suspension to support (4) by means of pin insulator (5) forced on to arched end of the pin (6). Rectangular window (7) with grooves (8) at both sides is cut in the support; element (3) is made as a flexible and resilient rectangular plate being part of a hollow cylinder; it represents non-linear relay element with two stable conditions and transition from one condition to another by blasting at critical value of environmental load. The pin is fixed (6) at the plate by screws (11) and connected by wire rope section (12) inserted freely through hole and equipped with suspended weight (15) at the end. |
|
Spacer for wires of overhead power transmission lines Spacer is made as a flat hinged multilink mechanism; it includes rod coupling unit and clamps for pull bars fixing to wires. The coupling unit represents box-like frame (1) connected to each wire (2, 3) by a pair of articulated rods (4, 5) and (6, 7). Clamps (8, 9, 10, 11) are made as two pairs of couplings moving freely on top of wires. Inside the frame (1) at flexible couplings (12) there's fixed elastic shell (13), which is filled partially by ferromagnetic bulk material (14). |
|
Spacer for wires of overhead power transmission lines Spacer contains pull bar made as a plate (1) connected to wires (2) by means of holes (3) with elastic members (4) made as anticlockwise twisted wire rope sections fixed by retaining screws (5) to clamps (6). Along outside contour of the plate there is shoulder (7) fixed at the plate by corners (8), bolts and screws. Spacer is also equipped with two rod-hammers (11) screwed by threaded portion (12) into threaded opening in plank (14) fixed to the plate (1) by screws. |
|
Cable tray contains inserts of specific design between the lid and side walls of the tray. |
|
Device to discharge ice-forming deposits from wires Device comprises impact elements installed on the wire, at the same time each of them is made in the form of a cylindrical bushing (2) placed freely on the wire (1) from coarse ferromagnetic material, such as soft magnetic rubber, which has at both ends conical sockets with longitudinal slots (3) along the generatrices that separate the sockets into separate tabs (4), which are characterised by internal frequency of bending oscillations relative to the place of their cantilever fixation to the end of the bushing, which approximately coincides with the AC frequency in the wires. |
|
Invention relates to a cable path with a cable tray (1), which has two opposite side walls (2) that stretch substantially in the horizontal direction, at the same time the side walls (2) in the area of their lower edges are connected to each other by means of multiple connection links (3) arranged at the distance from each other in direction of the longitudinal length of the side walls (2) or the bottom, at least with one support (4) arranged substantially orthogonally to the longitudinal length of the side walls (2) and stretching substantially horizontally, at the same time the cable tray (1) rests against the support (4), and with fastening facilities to fix the side walls (2) to the support (4). Side walls (2) are made in the form of C-shaped profiles opened to outside with a wall part (5) and two C-shaped shelves connected to opposite sides of the wall part (5), so that the fastening facilities comprises a reinforcing element (8), which has two surfaces (9, 10) of the joint, at the same time the first surface (9) of the joint in the mounted condition adjoins from the outer side to the wall part (5) and is connected with it, and at the same time the second surface (10) of the joint in the mounted condition adjoins at the top or at the bottom to the support (4) of the C-shaped shelf (7). |
Another patent 2513406.