CN202940542U

CN202940542U - Ice-melting cable hanging device applicable to 10kV and 35kV lines

Info

Publication number: CN202940542U
Application number: CN 201220660175
Authority: CN
Inventors: 犹永开
Original assignee: WENG'AN POWER SUPPLY BUREAU
Current assignee: WENG'AN POWER SUPPLY BUREAU
Priority date: 2012-12-05
Filing date: 2012-12-05
Publication date: 2013-05-15
Anticipated expiration: 2022-12-05

Abstract

The utility model discloses an ice-melting cable hanging device applicable to 10kV and 35kV lines. The device comprises a metal connecting plate (1) to which a double-tongue aluminum hook (2), an ice-melting wire (3) and an insulating rod (4) are connected. With the ice-melting cable hanging device, electricity testing and short circuit operations can be carried out without climbing the rod, an operator can complete all the operations easily by standing on the ground, only 12 minutes is needed from work permitting to ice-melting, only 6 ordinary workers are needed instead of 12 technicians needed originally, the number of workers is reduced, no skill is required for the workers, the workload is greatly reduced, and the risk that workers may fall off the rod when climbing the rod under a freezing weather condition can be avoided.

Description

Be applicable to the ice-melt cable hanging device of electric power 10kV and 35kV circuit

Technical field

The utility model relates to a kind of ice-melt cable hanging device that is applicable to electric power 10kV and 35kV circuit, belongs to electric power ice-melting device technical field.

Background technology

In recent years, due to being destroyed of natural environment, cause the frequent appearance of extreme climate, especially Shelter in South China Cities, often have the weather of congealing to occur winter, easily causes the power circuit icing, icing can cause that power circuit falls rod disconnection, causes electric grid large area power cut or causes electric network from collapsing.The large tracts of land of the most serious is once southern area in 2008 is congealed, and has caused that even Guizhou Power Grid partly disintegrates, and causes immeasurable loss.So various ice-melt measures are arisen at the historic moment, the 500kV circuit adopts DC de-icing device.For the circuit of 35kV and 10kV, usually adopt the ice-melt transformer circuit to be carried out the method for three-phase alternating current short circuit ice-melt.

Adopt the concrete deicing processes of ice-melt transformer, need to treat that first DC ice-melting transfers inspecting state to, in deicing processes, after the staff will first step on the true no-voltage of bar identification, again at job site two ends installing closure short-circuit grounding wire, then in the middle of, the staff could install ice-melt shorting stub or ice melting electric cable line by upper boom, it needs nearly 3 hours from work permit to the beginning ice-melt, after lower beam has been installed in ice melting electric cable or shorting stub, job site two ends staff upper boom again splits out short-circuit grounding wire, also will be from multiple aforesaid operations after the ice-melt end-of-job; Cause like this line short ground connection to need at least six technical ability personnel, ice melting electric cable connects needs six technical ability workmans at least.And in each job site, winter, the shaft tower surrounding also can icing, had strengthened and had stepped on the bar difficulty.Simultaneously, a large amount of valuable times of the work of loaded down with trivial details Pan Ta cost, make the condition of a disaster in short-term can't be controlled; And need 12 technical ability personnel to participate in simultaneously work because alternately stepping on bar at work, greatly reduce operating efficiency.

Summary of the invention

The technical problems to be solved in the utility model is: a kind of Pan Ta of need not is provided, and ice-melt cable hanging device rational in infrastructure, as simply to be applicable to electric power 10kV and 35kV circuit can overcome the deficiencies in the prior art.

The technical solution of the utility model is: be applicable to the ice-melt cable hanging device of electric power 10kV and 35kV circuit, it comprises metallic interconnect, is connected with two tongue aluminium hooks, ice-melt wire and insulating bar on metallic interconnect.

The quantity of two tongue aluminium hooks is two, and the spacing of 4-8cm is arranged between two two tongue aluminium are linked up with.

Described pair of two tongue aluminium hooks that tongue aluminium hook is used for grounding wire of power system.

Ice-melt wire and insulating bar are positioned at the tow sides of metallic interconnect.

Compared with the prior art, after adopting this ice-melt hanging device, its electrical verification, short circuit work, cable connect all can be without the upper boom operation, as long as every operation just can easily be completed on the ground in the station, only need 12 minutes by work permit to the beginning ice-melt, personnel reduce to six ordinary persons from 12 original technical ability, have not only reduced the quantity to the staff, and are also without any requirement to personnel's technical ability, workload reduces greatly, and the weather of avoiding congealing is stepped on the risk that personal height that bar brings falls.The quantity of two tongue aluminium hooks is two, the spacing that 4-8cm is arranged between two two tongue aluminium are linked up with, the two hooks of employing can increase the contact area with wire, and play shunting action, make in deicing processes not can be because of the loose contact conductor joint heating wire of burning, the effect of heat radiation is played in the space equally.Ice-melt wire and insulating bar are positioned at the tow sides of metallic interconnect, like this can stress equalization, the convenient connection, reduce the metallic interconnect area.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of this pair tongue aluminium hook.

Embodiment

embodiment 1: as depicted in figs. 1 and 2, metallic interconnect 1 adopts iron plate, it is about 5cm, wide ice-melt wire 3(aluminium row with being connected) with wide, thick approximately 4mm, be connected with two tongue aluminium hooks 2 that grounding wire of power system is used on metallic interconnect 1, ice-melt wire 3 and insulating bar 4, the quantity of two tongue aluminium hooks 2 is two, be screwed, two two tongue aluminium are linked up with the spacing that 4-8cm is arranged between 2, preferred 5cm, insulating bar 4 is connected between two pairs of tongue aluminium hooks 2, ice-melt wire 3(aluminium row) be connected to the another side of metallic interconnect 1, the connected mode of insulating bar 4 is that operation iron pull head is welded on iron plate, during use, its insulating bar is connected on the iron pull head and gets final product.

Using method

For articulating of line short circuit line: general distribution line ice melting current is below 500A, it is the soft copper wire of 120 square millimeters, long 2 meters with two joint sectional areas, two ends copper tip crimping, be separately fixed at the upper short circuit that forms of aluminium row of three cover combination tools, copper cash one head rest is taken advantage of a situation on line pole to be melted upwards, then dock next joint insulating bar from the lower end, the support of electric pole is arranged, insulating bar need not to bear too many weight.After three-phase is lengthened to sufficient length, insulating bar is left electric pole upright, owing to being that vertical direction is stressed, the situation that therefore exhausted action bars can not occur fractureing is articulated to the three-phase hook on circuit to be melted at last simultaneously, completes articulating of shorting stub.

For articulating of ice-melt transformer outlet: voltage goes out the high voltage insulated cable that the line options phase voltage is 10kV, and the class of insulation can meet the demands fully, and the weight of insulated wire itself is also light than cable far away.With the insulated wire of phase-splitting with aluminum connecting terminal and fastened by screw to aluminium row, insulating bar first is docked to enough length, then insulated wire is stretching along the action bars direction, be close at last action bars, and with Plastic Bandage with its colligation on action bars.Two meters places far away separate insulated wire apart from holding partly, away from the staff, the power-assisted of high voltage insulated cable are arranged, and have well strengthened the mechanical strength of insulating bar, have also well improved the problem that insulating bar rocks simultaneously.After three-phase connects respectively according to the method described above, action bars is erect, directly be articulated on circuit to be melted, tension downwards makes its contact-making surface contact good, completes the overlap joint to the outlet of ice-melt transformer.

For the circuit electrical verification: process screw thread on former insulating bar iron hook head, electroscope is screwed into fixing, insulating bar is served the circuit electrical verification with electroscope, if circuit is charged, can knows and see the electroscope flash of light, can clearly hear that electroscope reports to the police.The good like this problem that the bar electrical verification brings unsafe factor of stepping on that solved, the insulating bar of electrical verification simultaneously also has another purposes, one of processing is led and is angled on former insulating bar iron hook head, when conductor glaze formation, hang over attaching ice melting electric cable or shorting stub place with leading to angle, just pull gently and the icing of ice-melt place can be removed, the ice-melt shorting stub is contacted well with wire with ice melting electric cable.

Claims

1. ice-melt cable hanging device that is applicable to electric power 10kV and 35kV circuit, it comprises metallic interconnect (1), it is characterized in that: be connected with two tongue aluminium hook (2), ice-melt wire (3) and insulating bars (4) on metallic interconnect (1).

2. the ice-melt cable hanging device that is applicable to electric power 10kV and 35kV circuit according to claim 1 is characterized in that: the quantity of two tongue aluminium hooks (2) is two, and the spacing of 4-8cm is arranged between two two tongue aluminium hooks (2).

3. the ice-melt cable hanging device that is applicable to electric power 10kV and 35kV circuit according to claim 1 and 2, is characterized in that: two tongue aluminium hooks that described pair of tongue aluminium hook (2) used for grounding wire of power system.

4. the ice-melt cable hanging device that is applicable to electric power 10kV and 35kV circuit according to claim 1 and 2, it is characterized in that: ice-melt wire (3) and insulating bar (4) are positioned at the tow sides of metallic interconnect (1).