SPACER-DAMPER FOR WIRES OF OVERHEAD ELECTRIC LINE Russian patent published in 2009 - IPC H02G7/12 

FIELD: electricity.

SUBSTANCE: invention refers to the field of electrical power engineering and can be used as intra-phase spacer bars of damping type for bundle wires of overhead electric lines. Spacer is made in the form of body frame (2), movable beams (3) on their one end terminating with die-clamps (4) and on their other end fastened in damper assemblies (6) which consist of elastomeric disks tied up by bolt and nut with certain strength. Elastomeric disks are made of current-conducting high-carbon rubber with following characteristics: nominal tensile strength - 16.0 MPa; elongation at break - 400%; rebound hardness A - 55 h 60 standard units; rubbing wear - 120 m³/TJ; tear resistance - 40 N/mm². Basic geometrical dimensions of body frame (2) are determined from following relations: A=(1.05÷1.15)·B, α=5°÷15°, C=25°÷35°, C=(5.2÷6.2)·d_w._min, where d_w._min - minimum diametre of wire, A and B - lengths of horizontal and vertical parts (12, 13) of body frame (2), α - angle of slope (12) of body frame (2) relative to vertical (15), c - angle of slope at which beams (3) are attached to body frame (2), relative to horizontal (16) and C - beam length (3). Calculation of these values from given relations makes possible to provide mechanical strength of spacer bar under action of compression and tensile loads and its high damping characteristics.

EFFECT: providing simplicity of structure, reliability of work under various operational conditions, and providing effective damping of vibrations and suboscillations occurring in bundle wires of overhead electric lines.

6 cl, 5 dwg