摘要:
The present invention relates to a heating system for preventing/stopping the ice formation onto the cable (100) for power supply of a catenary for railway convoys, the system comprising: - A heating electrical cable (10); - Fastening means (30) for applying the said heating electrical cable (10) along a predetermined section of the contact cable (100) so that the said heating cable (10) is at least partially in contact with said supply cable (100) ; - An assembly of electrical supply (51, 52, 53) electrically connected with said heating electrical cable (10) in order to cause the passage of current thereof.
摘要:
A device and a method for the dispensing of an anti-freeze and/or anti-wear fluid or liquid and/or gas and/or vapour on to a cable (C) for the transmission of electric current and/or for evaluating the wear of a cable (C), comprises a base structure (2) attachable to a vehicle and supporting at the top at least one working unit (3) of the cable (C), the device comprises also a lifting/lowering and/or articulation and/or displacement apparatus (4) of the working unit (3) with respect to the base structure (2), and a dispensing component of an anti-freeze fluid (5) and/or a sensor element (6a, 6b) for detecting the wear of a cable (C), wherein the working unit (3) comprises at least one main camera or a sensor component (7) designed to detect the course and/or development of the cable (C) as well as a control unit designed to receive data from said main camera or sensor component (7) so as to drive accordingly the lifting/lowering and/or articulation and/or displacement apparatus (4) to move according to the course and/or development of the cable (C) the working unit (3) and then the dispenser component (5) of an anti-freeze fluid and/or the sensor element (6a, 6b) for detecting the wear of a cable (C).
摘要:
A de-icing apparatus for a flexible conductor, for example a suspended power line, is supported for longitudinal displacement along the conductor. The apparatus has a frame, a motor driven wheel on the frame for rolling engagement along the conductor and at least one guide element supported on the frame so as to be arranged to engage the conductor so as to cause at least one flexion in the conductor when the frame is suspended from the conductor by engagement of the drive wheel and said at least guide element on the conductor. The propagation of the flexion along the conductor cause ice and snow collected on the conductor to be loosened and fall from the conductor.
摘要:
Offenbart ist ein beheizbarer Stromabnehmer (2) zum Herstellen eines elektrischen Kontakts zwischen einer stromführenden Leitung (4) und einem Elektrofahrzeug (6), mit wenigstens einer im Wesentlichen quer zur stromführenden Leitung (4) angeordneten Schleifkontaktschiene (10), die wenigstens eine Bohrung (14) aufweist, in der jeweils ein elektrisch betriebenes, längliches Heizelement (18) angeordnet ist, das nur einen Teil des Querschnitts der Bohrung (14) ausfüllt. Erfindungsgemäß ist das Heizelement (18) mit einer Spanneinrichtung (20) verbunden, die das Heizelement (18) an eine Innenseite der Bohrung (14) andrückt. Offenbart ist ferner eine Heizeinrichtung (12) für den beheizbaren Stromabnehmer (2), mit einem im Wesentlichen starren stabförmigen Heizelement (18) mit einem elektrischen Widerstandsheizleiter (36) und zwei freien Enden (30, 32). Erfindungsgemäß umfasst die Heizeinrichtung einen eigenstabilen, elastischen und thermostabilen Schlauch (22), der an einem Ende (24) abgedichtet ist, wobei das abgedichtete Ende (28) des Schlauches (26) mit einem (30) der freien Enden des Heizelements (18) fest verbunden ist.
摘要:
Es wird ein Seil beschrieben, welches insbesondere als Tragseil für Seilbahnen geeignet ist. Das Seil umfasst einen Kern (31) und mehrere den Kern umgebenden Aussenstränge, welche beispielsweise aus mehreren Drähten (32.1...32.6, 34.1...34.12) bestehen. Gekennzeichnet ist das Seil durch eine integrierte Frostschutzeinrichtung (33.1...33.6), welche von einem Seilende her bedienbar ist, bevorzugt um Eisbildung an einer Seilaussenseite zu verhindern bzw. gezielt zu entfernen. Die Frostschutzeinrichtung (33.1...33.6) ist dabei bevorzugt in zumindest einer der Aussenlitzen integriert, kann jedoch auch im Bereich des Kerns (31) des Seils oder in Einlagen integriert sein, welche Zwischenräume zwischen einzelnen Drähten (32.1...32.6, 34.1...34.12) des Seils ausfüllen. Da die Frostschutzeinrichtung (33.1...33.6) bevorzugt als Widerstandsheizung ausgebildet ist, lässt sich ihre Heizintensität durch Stromfluss genau einstellen. Durch längs des Seils veränderliche Querschnitte oder veränderliche Materialeigenschaften der Heizdrähte (33.1...33.6) ist es möglich, besonders intensiv zu heizende Abschnitte des Seils konzentriert zu heizen. Auf diese Weise kann der gesamte Energieverbrauch der beschriebenen Vorrichtung möglichst klein gehalten werden. Dabei können unterschiedlichste Konstellationen von Litzendrähten (32.1...32.6, 34.1...34.12), dem Kern (31) des Seils und den Frostschutzeinrichtungen (33.1...33.6) von der Integration der Frostschutzeinrichtungen (33.1...33.6) im Kern (31) des Seils bis zu deren Positionierung auf Teilen der äusseren Oberfläche des Seils auftreten.
摘要:
A snow melting member for use on a power transmission line which can sufficiently melt snow even when the magnetic field created by the current in the power transmission line is relatively small. The snow melting member is composed of metals or metal oxides and has an annular, tubular or helical configuration for surrounding the outer periphery of the power transmission line. The snow melting member is provided with the dimensions and electromagnetic properties defined by the following formulas:
H× B H ≧ 40,000; and 0.7≦ t₀(B H /ρ · H) 1/2 ≦ 7.
By winding an iron alloy wire containing 1 to 15% by weight of aluminum around the power transmission line, or by attaching an iron alloy ring onto the power transmission line, heat is generated even when a relatively small amount of current flows through the power transmission line, thereby melting snow or ice sticking to the power transmission line.
摘要:
A device for the protection of power lines, an external cylindrical body (10), which may be hooked to a support, a piston (18), slidably housed inside the external cylindrical body (10) and which may be rotatably translated between a first retracted position and a second extended position, and two elastic means (20, 28), between which an annular element (26) is interposed, coaxial with respect to the rod, said annular element (26) housing at least one hook (30), integral with the annular element (26) and radially movable between an engaged condition with a corresponding recess (33) on the rod (19), wherein the rod (19) is not free to slide with respect to the annular element (26), and a disengaged condition from the recess (33), wherein the rod (19) is free to slide with respect to the annular element (26).
摘要:
A protection system (1) for power lines comprises a safety device which includes: at least one electrically conductive body (60), adapted to electrically connect the terminals of two electrical conductors (61); a coupling plate (62), which may be secured to a support (P), a pivotable element being hinged to this coupling plate (62); and a breaking element (64), connected to the pivotable element and adapted to engage the electrically conductive body (60), said breaking element (64) being movable from a rest position, wherein the electrically conductive body (60) is in an undeformed condition, and an engaged position, wherein the electrically conductive body (60) is in a deformed condition and prevents the transmission of an electric current between its ends.