CN218850346U - Transmission line galloping suppression device based on emergency inhaul cable - Google Patents

Abstract

The utility model belongs to the technical field of transmission line prevents waving, concretely relates to transmission line waves suppression device based on emergent cable, transmission line waves suppression device including setting up emergent cable on the wire, setting at subaerial first anchor point and second anchor point, setting at the fixed pulley of first anchor point, the fixed pulley passes through protecting against shock device and is connected with first anchor point, emergent cable turns to back horizontal extension to one-way tightening means through the fixed pulley, one-way tightening means is fixed with second anchor point. The utility model discloses transmission line galloping suppression device based on emergent cable can realize the emergent processing to overhead transmission line galloping, and it is perfect to supply current transmission line galloping prevention and treatment technique and method, realizes the calamity prevention and treatment of line galloping emergence in-process.

Description

Transmission line galloping suppression device based on emergency inhaul cable

Technical Field

The utility model belongs to the technical field of transmission line prevents waving, concretely relates to transmission line waves suppression device based on emergent cable.

Background

Statistical analysis data of operation accidents of overhead transmission lines show that the line galloping problem becomes one of the most main factors threatening the line safety at present. At present, the anti-galloping design and the management of the power transmission line are mainly based on galloping distribution maps and galloping grade division. In practice, serious galloping occurs in a low-risk galloping area, once a large-area long-term galloping disaster occurs, a large number of line hardware, ground wires/wires, towers and the like are seriously damaged, and the safe operation of a power grid is seriously influenced. In addition, influenced by the limitations of the existing galloping prevention and control technology, the galloping risks still exist in the lines with the installed galloping prevention measures under the extremely severe meteorological conditions, and the attention to the risks is also needed urgently in the operation and maintenance of the power transmission line. At present, anti-galloping technical measures mainly pay attention to how to reduce the occurrence probability of galloping and the amplitude of galloping in advance. In the actual operation and maintenance process, in addition to the reinforced observation, an effective emergency disposal method and strategy are lacked in the face of line galloping. With increasingly complex meteorological environments and increasing dense line channels, a method for emergency disposal of disasters after line galloping needs to be researched urgently, safe and rapid response of emergency states is realized, and power grid damage caused by long-time galloping is avoided.

In recent years, domestic and foreign research has been based on certain research on the aspects of waving mechanism, true type test, and development and application of anti-waving devices, and a plurality of waving prevention and control devices such as phase-to-phase spacers, phase-to-ground spacers, damping spacers and the like have been developed and successfully applied. The interphase spacers are disposed between the adjacent wires, but are not effective in suppressing the simultaneous waving of the adjacent wires. In addition, researches have proposed that the ground spacers are additionally arranged on the lines with serious galloping disasters, so that the treatment effects of the transmission line on the same-stage galloping and the different-stage galloping can be effectively improved. However, the above research results and devices are mostly directed to precaution, and corresponding technical research and equipment development are lacked for emergency dance stopping measures during and after the dance occurs.

The Chinese patent with the publication number of CN103441462B discloses a sectional combined type anti-galloping composite phase-to-ground spacer, which comprises an adjustable spacer, an adjusting plate and a pull wire, wherein the adjustable spacer comprises an upper rod body, a lower rod body and a middle rod connected between the upper rod body and the lower rod body, the upper end of the upper rod body is connected with a connecting hardware fitting, the lower end of the lower rod body is connected with the adjusting plate, the outer circumferences of the upper rod body and the lower rod body are both connected with an insulating umbrella skirt, the upper side of the insulating umbrella skirt of the upper rod body is connected with an end part accessory, and the lower side of the insulating umbrella skirt of the lower rod body is also connected with an end part accessory; the lower end of the upper rod body and the upper end of the lower rod body are both connected with an end part accessory, and the two ends of the stay wire are respectively connected with the adjusting plate and the ground. However, the phase-to-ground spacers in the patent are a precaution measure before the overhead transmission line galloping occurs, and cannot perform on-site rapid emergency treatment on disasters in the process of the line galloping.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a transmission line galloping suppression device based on emergent cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a transmission line galloping suppression device based on emergent cable, is including setting up the emergent cable on the wire, setting up first anchor point and the second anchor point subaerial, set up the fixed pulley at first anchor point, the fixed pulley passes through protecting against shock device and is connected with first anchor point, the emergent cable turns to back horizontal extension to one-way tightening means through the fixed pulley, one-way tightening means is fixed with the second anchor point.

Preferably, a spacer is further arranged on the wire, and an emergency inhaul cable is connected to the spacer with a proper distance.

Preferably, a tension sensor is further connected in series on the emergency cable between the fixed pulley and the one-way tightening device.

Preferably, the impact protection device is a spring.

Preferably, the one-way tightening device is a lever block or a hand winch.

Preferably, the first anchoring point and the second anchoring point are anchored by a rotary ground anchor, an in-ground anchor nail or a rotary ground pile.

The method for restraining the galloping of the power transmission line based on the emergency inhaul cable adopts a plurality of sets of the restraining devices, and comprises the following steps:

(1) Connecting a plurality of emergency inhaul cables on a transmission line lead at intervals;

(2) The emergency inhaul cable horizontally extends to the position far away from the lower part of the lead after being turned by the fixed pulley through the first anchoring point, the tail end of the emergency inhaul cable is gradually tightened by the one-way tightening device, the emergency inhaul cable is prevented from rebounding in the tightening process, and the one-way tightening device is fixed on the second anchoring point.

Preferably, a tension sensor is further connected in series on the emergency cable between the fixed pulley and the one-way tightening device.

The utility model discloses an actively beneficial effect:

1. the utility model discloses transmission line galloping suppression device based on emergent cable connects emergent cable and transmission line wire, then changes from vertical to horizontal tractive through the fixed pulley at first anchor point, and the level extends to and keeps away from the wire below, guarantees the operation safety; a spring anti-impact device is additionally arranged between the first anchoring point and the fixed pulley, so that the impact force of an emergency inhaul cable caused by conductor galloping in the operation process is prevented; still adopt one-way tightening means to tighten up gradually, prevent that emergent cable from tightening up the in-process and kick-backing. The utility model discloses transmission line galloping suppression device based on emergent cable can realize the emergent processing to overhead transmission line galloping, and it is perfect to supply current transmission line galloping prevention and treatment technique and method, realizes the calamity prevention and treatment of line galloping emergence in-process.

2. The utility model discloses still set up the conductor spacer on the wire, connect emergent cable on the conductor spacer of suitable distance, prevent emergent cable wearing and tearing wire. Still establish ties force sensor on the emergent cable between fixed pulley and the one-way tightening means, monitor the cable tension, satisfy the emergent cable tension monitoring demand of only dancing of different voltage class transmission lines, prevent that emergent cable tension is too big to cause the damage to transmission line.

Drawings

FIG. 1 is one of schematic structural diagrams of a transmission line galloping suppression device based on an emergency guy cable;

fig. 2 is a second schematic structural diagram of the transmission line galloping suppression device based on the emergency guy cable;

in the figure: the method comprises the following steps of 1-a wire, 2-a spacer, 3-an emergency cable, 4-a fixed pulley, 5-an impact prevention device, 6-a first anchoring point, 7-a tension sensor, 8-a one-way tightening device and 9-a second anchoring point.

Detailed Description

The invention will be further described with reference to some specific embodiments.

Example 1

Referring to fig. 1 and 2, a transmission line galloping suppression device based on emergent cable, including setting up emergent cable 3 on wire 1, set up subaerial first anchor point 6 and second anchor point 9, set up fixed pulley 4 at first anchor point 6, fixed pulley 4 passes through protecting against shock device 5 and is connected with first anchor point 6, protecting against shock device 5 is the spring, tensile strength is greater than or equal to 30kN, prevent the emergent cable impact force that the wire galloping brought in the operation process, protecting against shock ability demand when meeting the emergent end of dance of different voltage levels transmission line, protecting against shock device can be connected in parallel by a plurality of springs and constitute. The emergency inhaul cable 3 is turned by the fixed pulley 4 and then horizontally extends to the one-way tightening device 8, and the one-way tightening device 8 is fixed with the second anchoring point 9.

Further, still set up conductor spacer 2 on the wire 1, connect emergent cable 3 on the conductor spacer of suitable distance, select promptly to connect emergent cable on the suitable conductor spacer, make the setting of certain distance of interval between the different emergent cables.

Further, the tension sensor 7 is connected in series on the emergency guy cable 3 horizontal segment, and the guy cable tension monitoring requirement when the transmission line with different voltage levels is in emergency stop dancing is met by monitoring the tension of the emergency guy cable in real time, so that the transmission line is prevented from being damaged due to overlarge emergency guy cable tension.

Furthermore, the one-way tightening device 8 is a lever block or a manual winch, the wire tightening operation is convenient, and in order to meet the cable tightening requirements of the transmission lines with different voltage levels during emergency dance stopping, the tensile capacity of the lever block or the manual winch is more than or equal to 30kN.

Furthermore, the anchoring mode of the first anchoring point 6 and the second anchoring point 9 is a rotary ground anchor, an in-ground anchor nail or a rotary ground pile, so that rapid construction can be realized.

The method for suppressing the galloping of the power transmission line based on the emergency inhaul cable adopts one set (one set is illustrated in figure 1) or a plurality of sets (two sets are illustrated in figure 2) of the galloping suppressing device, and with reference to the connection mode of figure 1 or figure 2, the method comprises the following steps:

(1) Connecting a plurality of emergency inhaul cables to frame plates of some spacers 2 of the power transmission line at intervals or directly connecting the emergency inhaul cables with wires 1 of the power transmission line, and enabling different emergency inhaul cables to be arranged at intervals;

(2) The emergency inhaul cable 3 is steered through the first anchoring point 6 and the fixed pulley 4 and then horizontally extends to a position far away from the lower part of the lead 1, the tail end of the emergency inhaul cable is gradually tightened through the one-way tightening device 8, the emergency inhaul cable 3 is prevented from rebounding in the tightening process, and the one-way tightening device 3 is finally fixed at the second anchoring point 9; and a tension sensor 7 is also connected in series on the emergency guy cable 3 between the fixed pulley 4 and the one-way tightening device 8, so that the tension of the emergency guy cable is monitored in real time, and the transmission line is prevented from being damaged due to overlarge tension of the emergency guy cable.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. The utility model provides a transmission line galloping suppression device based on emergent cable, its characterized in that includes the emergent cable that sets up on the wire, sets up first anchor point and the second anchor point subaerial, sets up the fixed pulley at first anchor point, the fixed pulley passes through protecting against shock device and is connected with first anchor point, the emergent cable turns to back horizontal extension to one-way tightening means through the fixed pulley, one-way tightening means is fixed with the second anchor point.

2. The transmission line galloping inhibiting device based on the emergency guy cable of claim 1, wherein a spacer is further arranged on the wire, and the spacer with a proper distance is connected with the emergency guy cable.

3. The transmission line galloping suppression device based on the emergency cable according to claim 1, wherein a tension sensor is further connected in series on the emergency cable between the fixed pulley and the one-way tightening device.

4. The transmission line galloping suppression device based on the emergency cable of claim 1, wherein the anti-shock device is a spring.

5. The transmission line galloping inhibiting device based on the emergency guy cable as claimed in claim 1, wherein the one-way tightening device is a lever block or a hand winch.

6. The transmission line galloping suppression device based on the emergency cable of claim 1, wherein the first anchoring point and the second anchoring point are anchored in a rotating ground anchor, an in-ground anchor nail or a rotating ground pile.

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