The removal device to the ground of the currents induced in the armor optic cable
(57) Abstract:The device can be used when mounting the coupling optical communication cables. The mechanical mounting wires armor optical fiber cable (OK) contains vnutrikojnuu metal sleeve and made integral with it a rack of shunts. Vnutristenocna sleeve has a Central hole with a tapered portion and a ledge with threads on the outer surface. In addition, it connects with buenaposada OK with tapered liner and cap nut with thrust device on a stepped inner surface that interacts with the end face of the liner. Hour of shunts each node of mechanical fastening armor has an additional tapered hole and the pad with a conical protrusion, when forces which are fixed wire ground wire. The technical result is to increase the reliability of disqualification on the ground induced currents storms and currents induced in the armor OK when electromagnetic radiation. 6 Il. The invention relates to the field of electrical engineering and can be used when mounting direct, deadlock and termination coupling optical communication cable (s) for disqualification on ground currents storms and currents, navigable (RF patent N 2037934 H 02 G 15/04), which wire outer cover armor clamped between the outer conical surface of the bushing and the inner conical surface of the nut. This embodiment provides the reliability of fastening of wires armor, but does not provide reliable shunts induced currents storms and currents from AMY.The aim of the invention is to improve the reliability of shunts when the induced currents in the cable storms and currents from AMY.This goal is achieved by the fact that removal device on the ground currents induced in the armor OK, posted in ugolovnika clutch OK and fill insulating self-hardening mass, consists of nodes mechanical mounting wires armor with stand shunts, to which are attached the ground wire or wires to attach instrumentation (instrumentation), and installed on two plates, made one of the insulation, other conductive materials. The plates have holes through which the conductive pin and two sets of replaceable anchor bushings.The mechanical mounting wires armor OK contains vnutrikojnuu sleeve and made one with her rack of shunts made of mother of EET Central hole with a tapered portion and a ledge with threads on the outer surface. Vnutristenocna sleeve connected with buenaposada OK with tapered liner and cap nut with thrust device on a stepped inner surface that interacts with the end face of the liner. Hour of shunts each node of mechanical marked armor has an additional tapered hole and the pad with a conical protrusion, when forces which are fixed wire ground wire. Hours of electrodes are placed on two (arranged one on the other) plates, and the first and adjacent to the racks of shunts made of insulating material (such as fiberglass), and the second is made of conductive material (brass or tin-plated steel). Through hours of shunts and plate are holes in which are inserted the conductive terminals, such as screws and the rotating speed of the support sleeve made of insulating and conductive materials.In Fig.1 shows a device with three attachment points of armor.In Fig. 2 (2A, 26, 2B, 2G, 2D) are shown embodiments of the inventive device and including mechanical fastening armor OK.In Fig.3 shows a portion of a connection node of the plates between the reattaching the three nodes mechanical mounting wires armor.In Fig.5 shows the basic design of the direct coupling stub type using two nodes mechanical mounting wires armor.In Fig.6 is a schematic diagram of a cable line with the inclusion of direct, y and terminal joints with the use of the claimed device.The removal device to the ground of the currents induced in the armor OK, contains in the shell (1) with insulation self weight (2) nodes mechanical fasteners armor (3) optical cable (4) (OK), ground wire (5) or wire to attach instrumentation (5), mounted on two plates (6) and (7).The mechanical fastening armor OK (Fig.2A and its variants Fig. 2B; Fig. 2B; Fig. 2G; Fig.2D) (3) contains vnutrikojnuu metal sleeve (8), the end of smaller diameter which one it is round or rectangular metal hour shunts (9), tapered insert (10), and nut with a stepped inner surface (11).Ponpoko (or screen) (12) OK (4) is mounted between the facing to each other of the conical surfaces of the liner (10) and sleeve (8). Supply ground wire (5) is carried out through the cone otoyoluna of insulating material, and plate (7) from conductive (Fig.1, figs.2).Through holes (Fig. 3) passing through a rack of shunts (9), an insulating plate (6) and a conductive plate (7), are the rods (17), based on the special support of the stepped sleeve (18), one set of which is made of insulating metal and other conductive. The holes in the rack shunts (9) and plate of an insulating material (6) have a diameter that matches the outside diameter of the abutment of the stepped sleeve (18), and the hole in the conductive plate (7) has a thread corresponding to the thread on the rod (17), which provides a good electrical contact between the rod (17) and a conductive plate (7).In Fig.4 shows the inventive device is mounted in a branch coupling stub type, and Fig.5 shows the device mounted in the direct coupling stub type.Installation of the inventive device is as follows: on the bonded ends OK and install the ground wire pull through the respective nozzles of Golovnin clutch OK, then conductive and insulating plates and electrodes consisting of metal posts and metal conical out on the desired length of plastic hose OK Baring wire armor OK, and shorten them to the desired length by cutting, smooth out from their hydrophobic filler, perform cutting wires grounding.Installation of components of mechanical fastening armor OK, do as follows: wire armor OK, left after shortening, pull steel cone liners, then wire armor bent on the thickened parts of the bushings and press them on conical surfaces, fixing them with a wire brace to a smaller diameter steel liners. Fixed around the ear wire armor and pushes the electrodes (hour of shunts with Bush) and screwing on the threaded sleeve shunts nuts, thereby being pinched wires armor between the cones of the liner and the inner surface of the sleeve.Installation of grounding wires to the components of mechanical fastening armour OK to perform the following: conduct the sweep wires ground wire and insert them in a cone-shaped hole at the front of shunts, from its smaller diameter, and wire up the ground wire, with their rays on the surface of hours of shunts. Insert between divorced diameter of the conical hole is e of shunts.To mounted nodes mechanical fasteners armor OK and connected the wires grounding pulls OK insulating plate, a plate of conductive material, as well as Golovnin (node A), in which they are installed and fixed by screws.In holes passing through the rack of electrodes, insulating and conductive plate, is provided conductive stepped bushings and rods, the latter when screwing provide a reliable electrical contact between all nodes sealing armour OK, thus improving the electrodes.When using the set speed reference bushings of insulating material each node sealing armour OK is isolated from the other, which allows for control and measurement at each OK separately.This implementation design provides a reduction of the electrical resistance of the transition contact from armour OK to current leads, therefore, the passage of a powerful current pulse storms or currents AMY (Fig. 6) induced in armor OK, last through the inventive device ground conductors disposed on the ground, while maintaining normal thermal regime of the node, i.e. the node Oyj nodes seal of armor with plates and conductive stepped bushings allows first, to further improve the reliability of disqualification on the ground induced currents storms and currents from AMY.Secondly, since the electric current powerful pulse storms or currents AMY induced in buenaposada OK, flowing by mechanical fastening armor forks on oppositely directed poles of shunts (Fig. 2G, 2D), resulting electrodynamic and mechanical forces acting on the sealing, shrink, because part of their vzaimodeystviya in the distribution of electric current in opposite directions through the racks of shunts, resulting in General electrodynamic and mechanical forces acting on the end cutting significantly reduced.Thirdly, performed separately and isolated from other nodes mechanical fasteners OK with deduced from them with ground wires and clutch, for example, a stub type, allow, if necessary, during operation of the cable line to monitor (measure) the insulation resistance between the end fittings and insulation resistance protective hose OK on the length of the line between insulating couplings and thereby to carry out forecasting longevity mounted l is a mechanical fastening armor each of them consists of vnutrikozhnoe metal sleeve, cone liner and nuts with a stepped inner surface, characterized in that the end face of the smaller diameter vnutrikozhnoe bushings at the same time, it is hour of shunts, through which a tapered hole for the ground wire and presses his plate with conical projections, the nodes mechanical fasteners armor installed on two plates, the nearest of which is made of insulating material and the second conductive material through them and stand shunts are holes with conductive rod and a removable reference manual hubs, one set of which is made of conductive, and the second of insulating materials.
FIELD: electrical engineering.
SUBSTANCE: proposed ground clamp designed for use with portable grounding electrodes to connect disconnected wires of round- and rectangular-section conductors as well as those of other sections to ground can be rather easily equipped with contacts of any desired type, such as surface, linear, blade, and point contacts, as well as those made in the form of pointed teeth, which makes it suited to multipurpose applications.
EFFECT: enlarged functional capabilities.
2 cl, 1 dwg
FIELD: electrical engineering; safety ground.
SUBSTANCE: proposed safety ground electrode is double-zone device that has current lead-in covered with upper-zone moisture-proof sheath. Metal current lead-in is in direct contact with ground waters and is disposed in borehole whose casing tube is made of insulating material; ceramic bushing insulator is fitted in upper part of borehole to prevent potential escape to ground surface.
EFFECT: improved design, enhanced conducting properties and safety in operation.
1 cl, 1 dwg
FIELD: power engineering.
SUBSTANCE: proposed ground clamp used in portable grounding electrodes for grounding disconnected conductors of overhead power transmission lines has electrodynamic loop incorporating two circuits, main and additional ones, which raises effectiveness of inherent composite electrodynamic circuit and ensures its high operating efficiency in stabilizing contact resistance of clamp-to-ground-conductor pair under emergency conditions as additional circuit incorporated in proposed clamp is made in situ in functionally justified proximity of contact assembly.
EFFECT: enhanced reliability of stabilizing contact resistance in clamp-to-ground-conductor pair under emergency conditions.
1 cl, 3 dwg
FIELD: electrical engineering; grounding electrodes for electrical installations.
SUBSTANCE: proposed grounding electrode is built of separate steel stakes covered with corrosion-resistant conducting zinc coating and threaded at their ends which enables their lengthwise connection through sleeves made of material permissible for electric contact with stake coating; prior to dipping grounding electrode in soil pointed tip is turned onto first stake and same tip is fitted onto each next stake through head sleeve.
EFFECT: facilitated manufacture, reduced resistance to current spreading, enlarged functional capabilities.
1 cl, 5 dwg
FIELD: groundings and earth electrodes.
SUBSTANCE: method can be used in poor conducting frozen grounds and permafrost (excluding rocks) with specific resistance of 500 Ohm·m. according to the method, reduction in seasonal resistance of ground installation of electric plant being put into permafrost and being connected with coaxial heater is achieved at the contact of thin seasonal-standard electro-conducting surface layer of ground with melt electro-conducting medium around coaxial heater heated by current. As an earth electrode the coaxial heater is offered which has to be two cylindrical conductors connected in series in such a way that one isolated conductor is disposed inside the other one along its whole length to form cylindrical bifilar.
EFFECT: reduced resistance of grounding installation.
3 dwg, 1 tbl
FIELD: power engineering.
SUBSTANCE: proposed grounding connection designed for use in mobile electrical installations to protect attending personnel against electric shock incorporates pointed metal rod with clamp and driving hammer that has two grips and vertical opening for sliding over rod. Rod is also provided with two fillets spaced apart through hammer travel distance; one of fillets is disposed in top part of rod near clamp; hammer is built of two parts with split area along vertical opening axis; these parts have guide pins entering one another and seats, as well as loop connection and latch.
EFFECT: enhanced reliability and safety of device due to dispensing with removable parts.
1 cl, 5 dwg