RU98848U1 - DEVICE FOR REMOVING ICED SEDIMENTS FROM ELECTRIC TRANSMISSION WIRES - Google Patents

Abstract

 A device for removing icy deposits from power wires in the form of a series-connected transducer, an oscillating speed transformer and a holder in the form of a guide cup, at the output end of which there is an axially displaceable tool, characterized in that the tool is made in the form of a clamp consisting of two half-bodies, mounted on an axis and joined by a threaded connection, while the inner surface of the clamp half-bodies is roughened.

Description

The utility model relates to the field of energy, electrical engineering, wired communication systems, television and radio broadcasts, and, in particular, to devices that prevent the formation of ice on wires and cables of overhead power lines (VL) of power transmission.

Deposits of ice on wires and cables of overhead lines lead to wire breaks and cables, short circuits and even falls of OHL supports, which significantly complicates the supply of electricity to consumers and causes significant economic damage.

A device for combating icing is known, including a current source external to the power line, configured to connect to current-carrying wires of the power line. The external current source is made in the form of a high-frequency generator, made with the possibility of providing power calculated by the formula RG = q · A · ΔT, where q is the heat transfer coefficient of the upper hot layer of the wire to air, A is the surface area of the wires, ΔT is the wire heating temperature relative to ambient temperature. The output of the generator is connected to the input of a matching device of capacitive type, made with the possibility of matching the output impedance of the high-frequency generator with the input impedance of the power transmission line and having the number of outputs corresponding to the number of wires of the power transmission line (RF patent No. 2356148, class. H02G 7/16. Publ. 20.05 .2009).

A disadvantage of the known device is the design complexity, high energy consumption and a lengthy procedure for eliminating the already formed ice "coat".

Known shaker of wires, containing an impeller, characterized in that the impeller is made of dielectric and contains a sleeve, along the longitudinal axis of which is made a slit-like incision, on the outside of the sleeve there are plates consisting of two parts, internal and external, which are made with the possibility of bending in one side, the diameter of the sleeve is equal to the diameter of the wire on which it is installed. The inner surface of the sleeve has a corrugation, and the plates are placed mutually perpendicular to each other (RF patent No. 2318279, class. H02G 7/16. Publ. February 27, 2008).

But this wire shaker does not remove the ice when it is already frozen on the wires. In addition, it often cannot be applied in hard-to-reach (mountainous and wooded) areas.

Closest to what is proposed in terms of its technical essence is an ultrasonic head for strain hardening and relaxation processing in the form of a series-connected transducer, an oscillating speed transformer and a holder with holes at the output end, in which tools having the form of step rods are located. The holder is made in the form of a guide cup and is attached with its nodal plane to the flange, which is also located in the nodal plane of the speed transformer, and the rods in it are located with the possibility of axial displacement relative to the surface to be machined (USSR author's certificate No. 472782, class B24b 39/04, B23p 1 / 00. Published 05.06.75, Bull. No. 21).

But this ultrasonic head can only be used for treating large surfaces with an inhomogeneous rough surface (for example, sheet metal structures). Using it to remove icy deposits from power wires is impossible.

The task to which the claimed utility model is aimed is to expand the functionality and technical use of the ultrasonic head.

The technical result is to protect the power line from sticking wet snow and ice.

The problem is solved in that in the ultrasonic head for in the form of a series-connected transducer, an oscillating speed transformer and a holder in the form of a guiding cup, at the output end of which there is an axially displaceable tool, the tool is made in the form of a clamp consisting of two half-cases mounted on axis and combined threaded connection. In this case, the inner surface of the clamp half-shells is made rough.

The execution of the tool in the form of a clamp, consisting of two half-cases mounted on an axis and connected by a threaded connection, makes it possible to place a wire / cable between the half-cases. Thus, it becomes possible to influence the wire / cable with ultrasonic vibrations that prevent the formation of ice on the wires / cables of overhead power lines.

And the execution of the inner surface of the half-shells of the clamp rough facilitates reliable fixation of the wire / cable in the clamp.

Figure 1 shows a device for removing icy deposits from power wires, General view; and figure 2 is a clip of wires.

The device consists of a series-connected transducer 1, an oscillating speed transformer 2 and a holder 3 in the form of a guide cup, on the output end 4 of which is a tool 5 made in the form of a clamp, consisting of two half-bodies 6 and 7, mounted on axis 8 and connected by a threaded connection 9.

A device for removing ice deposits from power wires works as follows.

A wire / cable of an overhead power transmission line is placed between the half-shells 6, 7 and clamped with a threaded connection 9.

The transducer 1 serves the voltage of the ultrasonic frequency. Ultrasonic vibrations are excited in it with a frequency close to mechanical resonance and an amplitude sufficient to overcome external and internal friction forces, transmitted by a force pulse through a contact 5 to the tool 5 made in the form of a clamp through the contact with the output end 4 of the transformer of vibrational velocity 2. By means of a clamp consisting of two half-shells 6 and 7, mounted on the axis 8 and connected by a threaded connection 9, ultrasonic vibrations act on the wire / cable, removing icy and other deposits from it.

Claims (1)

A device for removing icy deposits from power wires in the form of a series-connected transducer, an oscillating speed transformer and a holder in the form of a guide cup, at the output end of which there is an axially displaceable tool, characterized in that the tool is made in the form of a clamp consisting of two half-bodies, mounted on an axis and joined by a threaded connection, while the inner surface of the clamp half-bodies is roughened.