38results about How to "Curb dancing" patented technology

The invention provides a combined anti-galloping device based on energy consumption and the mismatching principle. The device comprises a spacer rod, a plurality of first connecting parts, and a plurality of damping mechanisms. Each first connecting part is connected with the inner wall of the spacer rod, and the first connecting parts are distributed in the spacer rod in a peripheral direction. The damping mechanisms are respectively connected between the adjacent first connecting parts, and each damping mechanism is used for reducing the vibration of a power transmission line connected withthe spacer rod. According to the invention, the interior of the spacer rod is connected with the plurality of damping mechanisms, and the vibration energy of the power transmission line is effectivelyconsumed through the plurality of damping mechanisms, thereby reducing the amplitude of the power transmission line, achieving the inhibition of the galloping of the power transmission line, and enabling the anti-galloping effect to be better.

The invention relates to electric power protection equipment. The invention relates to an overhead transmission line galloping suppression device. The device comprises a wire, a supporting rod, a pulley assembly, a counterweight, a composite insulator, a main insulating rope and a load-bearing insulating rope; and the supporting rod is obliquely buried on the ground, fixed pulley arranged above movable pulley, the fixed pulley is connected to the supporting rod, the main insulating rope is wound on the wire, two ends of the main insulating rope are respectively connected with two composite insulators, one end of the load-bearing insulating rope is connected to the upper end of the movable pulley, and the other end of the load-bearing insulating rope is connected to the lower end of one ofthe composite insulators after passing around the fixed pulley and the movable pulley in turn, and the counterweight is connected to the lower end of the movable pulley. The overhead transmission linegalloping suppression device has the advantages of flexible and reliable use and reasonable design, galloping of lines can be inhibited by the aid of pulling modes, and safe operation of power transmission lines can be guaranteed. Moreover, no pulling devices need to be arranged at the two ends of the line, and the line can be pulled at any position of the power transmission line.

The invention provides a rotary clamp for a vibration hammer with weak rotating resistance. The rotary clamp comprises an inner shell for clamping a conductor, an outer shell, and a rotating part arranged between the inner shell and the outer shell. The inner shell penetrates the cavity of the outer shell. An annular gap is arranged between the inner shell and the outer shell, and the inner shelland the outer shell are not in contact with each other. The axial center line of the inner shell coincides with the axial center line of the outer shell. The rotating part is arranged in the annular gap. The rotating part rotates relative to the inner shell. The rotating part enables the conductor clamped the rotary clamp of the vibration hammer to have a good rotating effect. When the rotary clamp is used together with a suspension clamp with weak rotating resistance and a spacer bar with weak rotating resistance, the non-uniformity of ice coating of the conductor under the weather conditionsof rain and snow can be reduced, the galloping of the conductor can be restrained, and the safe operation level of the lines and power grid can be improved.

The invention discloses a method for suppressing the waving of an extra-high voltage bundled conductor and belongs to the field of power transmission. According to the method, a rotatable wire clamp is arranged and can freely rotate within a certain range in the axial direction of holding a conductor core center; according to the characteristic that eccentric torsion occurs under the action of gravity when the conductor is coated with ice, the rotatable wire clamp is utilized and freely rotates in the axial direction of holding the conductor core center; and within the rotating range, the conductor is coated with the ice, and the eccentric torsion occurs under the action of gravity, so that non-round section can be effectively avoided, and lift force or torque cannot be exerted on the conductor which is blown by wind. According to the technical scheme, a structure that the conductor held by the rotatable wire clamp can freely rotate along the longitudinal axis of the conductor is adopted; and on the premise of changing and adjusting parameters of a conductor system, the phenomenon that the non-round section is formed when the conductor is coated with the ice is avoided, so that an effect of suppressing the waving of the extra-high voltage bundled conductor is achieved. The method can be widely applied to the field of the suppression of the waving of the extra-high voltage bundled conductor.

The invention discloses a triangular-style anti-dancing spacer which includes a triangular bracket. Three top ends of the triangular bracket are connected to a plurality of movable clamps; wherein one side of the triangular bracket is provided with a pendulum device. The present disclosure utilizes a triangular stand their structural stability, and the use of a plurality of arcuate clamp for anti-dancing, but the present disclosure is designed to produce a simple, stable structure, and can effectively inhibit the generation of dancing, greatly reducing the amplitude reduce galloping hazards.

The invention discloses a phase-to-phase spacer. The spacer is connected between two wires and comprises a phase-to-phase spacer insulator (4), a length adjusting device (8) connected with a first endof the phase-to-phase spacer insulator (4) and two wire clamps (7), wherein the two wire clamps (7) are connected with a second end (3) of the phase-to-phase spacer insulator (4) and the other end ofthe length adjusting device (8), and the two wire clamps (7) are connected with the two wires respectively. Aiming at the line galloping problem, the phase-to-phase spacer has the advantages that thetechnical problem about wind prevention for a power distribution system of a wind farm is effectively solved, the equipment loss degree is reduced, the accidental shutdown range is reduced, troubleshooting time is shortened, and the economic loss is reduced.

The invention relates to a comprehensive anti-galloping method combining spacing-type anti-galloping devices and phase-to-ground spacers. The comprehensive anti-galloping method comprises following steps: A, determining mount point positions of the phase-to-ground spacers according to the span length of a power transmission line; B, determining the mounting direction of the phase-to-ground spacersaccording to the statistical result of the predominant wind direction of the region where the power transmission line exists; C, determining mounting positions of the spacing-type anti-galloping devices according to the span length and the mounting positions of the phase-to-ground spacers; D, fixing the spacing-type anti-galloping devices, adjusting the length of stay wires of the spacing-type anti-galloping devices, and making the stay wires in a loose state; and adjusting the length of stay wires of the phase-to-ground spacers to apply a 3-5 KN pretightening force. The comprehensive anti-galloping method combining the spacing-type anti-galloping devices and the phase-to-ground spacers has a good anti-galloping effect, the fact that the power transmission line operates safely is guaranteed, and economic loss caused by line galloping is reduced.

The invention discloses an active anti-galloping method and an anti-galloping device for an overhead power transmission line. The active anti-galloping device comprises a fixed support, a monitoring and controlling mechanism and an actuating mechanism, wherein the fixed support is installed on a wire of the overhead power transmission line; the monitoring and controlling mechanism and the actuating mechanism are arranged on the fixed support; the monitoring and controlling mechanism is used for monitoring the wire galloping acceleration; the motion of the actuating mechanism is controlled according to the galloping acceleration of the fixed support; the actuating mechanism comprises a heavy hammer capable of moving up and down along the fixed support; the actuating mechanism receives the instructions of the monitoring and controlling mechanism to control the heavy hammer to move up and down along the fixed support, so as to offset the force generated by reverse motion of the heavy hamper and the wire galloping force.

The invention relates to an anti-ice condensation cable which is suitable for frozen and rainy rough weather and an auxiliary facility which is matched with the anti-ice condensation cable and has an anti-ice condensation property. According to an anti-ice condensation field metal tower body, anti-condensation elements are arranged on the surface of a part with high ice condensation possibility on the tower body, and are arranged on the surfaces of a rod and a post which form the tower body in a buckled, sleeved, coated or adhered mode. By a method for arranging anti-condensation sleeves or the anti-condensation elements on the part with high ice condensation possibility on the tower body, ice condensation on the surface of the cable is effectively prevented, heat exchange between the cable and an external environment is greatly reduced, and the phenomenon of ice condensation caused by heat absorption due to direct contact between rainwater and the tower body is effectively prevented.

The invention relates to a method for installing 500kV compact transmission line phase-to-phase spacers. The method comprises the following steps: sequentially numbering adjacent towers; and installing phase-to-phase spacers on phase conductors according to the distance L between the adjacent towers, the local maximum icing thickness D and the local maximum wind speed V, wherein the icing thickness D is smaller than or equal to 10mm, the maximum wind speed V is smaller than or equal to 15m / s, the distance L is below 600m, or is greater than 600m and smaller than or equal to 800m, or is greater than 800m and smaller than 1000m, and the number of the phase-to-phase spacers arranged on the phase conductors between the adjacent towers is at least 3, 9 or 12. The method of the invention prevents the galloping of 500kV compact transmission lines, and provides technical support for the safe and stable operation of the power grid.

The invention relates to an anti-icing cable applicable to ice rain atrocious weather and matched auxiliary facilities with anti-icing property. The anti-icing cable of the invention is characterized in that the cable is sleeved with an anti-icing sleeve, a clearance is reserved between the inner surface of the anti-icing sleeve and the surface of the cable, and the anti-icing sleeve can rotate relative to the cable. An insulating bottle for field power transmission is characterized in that the easy-icing surface of the insulating bottle is provided with the anti-icing sleeve. An anti-icing field metal tower body is characterized in that the surface of an easy-icing part of the tower body is provided with an anti-icing element. A method for arranging the anti-icing sleeve or the anti-icing element on the easy-icing part of the cable, the insulating bottle or the tower body effectively prevents the surface from icing, greatly reduces the heat exchange with the outside, and effectively prevents the icing phenomenon caused by heat absorption after rainwater is directly contacted with the cable, the insulating bottle or the tower body.

The invention discloses a spacer wire chunk capable of maintaining a torque characteristic in ice coating. The spacer wire chunk comprises a body frame, a spacer sleeve and a wire chunk, wherein a body on the body frame is connected with a cover plate to form an annular cavity; the wire chunk is arranged in the annular cavity of the body frame; the outer wall of the wire chunk and the inner wall of the annular cavity are respectively set as circular rings; the spacer sleeve is arranged between the outer wall of the wire chunk and the inner wall of the annular cavity; the body frame, the spacer sleeve and the wire chunk form a rotation pair; the wire chunk is adapted in the annular cavity rotatably; and flanges are arranged on the two outer sides of the annular cavity of the body frame. Byusing the spacer wire chunk, vibration, wire collision between wires, breeze vibration and subspan oscillation when overhead power transmission lines are ice-coated are inhibited so as to ensure power equipment safety.

The invention discloses a multi-level composite energy-consuming anti-dancing moving spacer bar. The multi-level composite energy-consuming anti-dancing moving spacer bar includes a spacer bar body and a clamping fixture used for connecting split wires, wherein the spacer bar body includes an annular tube, a partition and a mass ball are arranged inside the annular tube, an inner ring of the annular tube is connected with upper and lower annular permanent magnets, a movable cylinder is arranged on an inner side, an outer ring of the movable cylinder is connected with a conductor plate, the conductor plate extends into a passage between the upper and lower permanent magnets, the movable cylinder and the annular tube are connected by a spring and a roller, and a drum equipped with the damping fluid is arranged in the movable cylinder.

The invention belongs to the technical field of power systems, and relates to a large-stroke dance suppression damper for power transmission wires. The large-stroke damper for power transmission wires provided by the present invention cuts the magnetic induction lines generated between the magnets through the metal plate to generate damping force and realize the vibration reduction effect of the wire model; the main components are connected by elastic mechanisms, such as springs, and adjusted The stroke is large, which can suppress galloping with a large stroke, the vibration reduction effect is obvious, the model loss is small, and the durability is strong; the weight is light, the transportation is convenient, and it is easy to install and maintain; Effectively transmit the galloping vibration of the wire; the lower end of the large-stroke dance suppression damper of the transmission wire is designed with an inverted bowl-shaped anti-snake device to prevent small animals from climbing up along the lead wire and causing line safety accidents; the invention is novel in design and unique in use. Wide range, good promotion and application value and economic benefits.

The invention provides a combined anti-dancing device based on the principle of energy consumption and detuning. The device includes: spacer rods, a plurality of first connectors and a plurality of vibration damping mechanisms; wherein, each first connector is connected to the inner wall of the spacer rods, and is distributed along the circumferential direction in the spacer rods; each adjacent A damping mechanism is connected between the first connecting pieces, and each damping mechanism is used to reduce the vibration of the power transmission wire connected with the spacer rod. The combined anti-dancing device provided by the present invention connects a plurality of vibration damping mechanisms in the spacer, effectively consumes the energy of the vibration of the transmission wire through the multiple vibration reduction mechanisms, and reduces the vibration amplitude of the transmission wire, thereby achieving the purpose of suppressing the vibration of the transmission wire For the purpose of dancing, the anti-dancing effect is better.