CN217902823U - 10kV fault indication type insulator arrester - Google Patents

Abstract

The utility model relates to a 10kV fault indication type insulator arrester, it includes the insulator arrester the connection of insulator arrester lower part one side is equipped with fault indicator, the insulator arrester includes the umbrella body to and establish last gold utensil and lower gold utensil at both ends about the umbrella body, the lower extreme of gold utensil is the screw rod end down be equipped with the insulating tube in the umbrella body from last spring, magnet tube, a plurality of resistance card, aluminium electrode and the insulating pad of down being equipped with in the insulating tube the upper and lower both ends of magnet tube are equipped with conical copper sheet respectively, the aluminium electrode links to each other with overhanging screw rod, fault indicator establishes on overhanging screw rod, it breaks away from the wire to be equipped with night light between the screw rod end of overhanging screw rod and lower gold utensil. The utility model discloses prevent that the thunderbolt overvoltage from arousing insulator flashover or puncture and then blow insulated wire under the power frequency electric arc of concentrating to can effectively reduce the tripping operation of system.

Description

10kV fault indication type insulator arrester

technical field

The utility model relates to an insulator lightning arrester, in particular to a fault indication type insulator lightning arrester.

Background technique

At present, domestic 10kV overhead lines have basically replaced bare conductors with insulated conductors, and the interphase short circuit and ground fault rates have been significantly reduced. However, lightning disconnection faults caused by insulated conductors and post insulators have increased, which has become the main source of serious threats to the safe operation of the line. Ground faults caused by lightning strikes and failed insulators occur frequently, and it is difficult to find failed insulators during line inspection.

Contents of the invention

Purpose of the invention: The purpose of this utility model is to overcome the deficiencies in the prior art, to provide a method to prevent flashover or breakdown of insulators caused by lightning strike overvoltage, and to burn insulated wires under concentrated power frequency arcs, and to effectively reduce system Tripped 10kV fault indicating insulator arrester.

Technical solution: In order to solve the above technical problems, the 10kV fault indicating type insulator arrester described in the utility model includes an insulator arrester, and a fault indicator is connected to the lower side of the insulator arrester, and the insulator arrester includes an umbrella body, And the upper and lower fittings arranged on the upper and lower ends of the umbrella body, the lower end of the lower fitting is a screw end, an insulating tube is arranged in the umbrella body, and a spring, a magnetic tube, A plurality of resistance sheets, aluminum electrodes and insulating pads are respectively provided with conical copper sheets at the upper and lower ends of the magnetic tube, the aluminum electrodes are connected with the extending screw, and the fault indicator is arranged on the extending screw. A luminous detachment wire is arranged between the protruding screw rod and the screw rod end of the lower fitting.

Further, the fault indicator includes a casing, a coil assembly is arranged inside the casing, and a fault indicator detonation marking band and a fault indicator electric control unit are arranged below the coil assembly.

Further, a high-voltage wire is connected to the upper part of the upper fitting.

Further, there are four resistor sheets.

Further, a sheath is provided on the extending screw rod between the umbrella body and the fault indicator, and the sheath and the umbrella body are integrally formed.

Further, the insulator arrester is fixed on the cross arm of the tower through lower fittings.

Further, fastening nuts are provided on both the protruding screw and the screw ends of the lower hardware.

Beneficial effects: Compared with the prior art, the utility model has the remarkable advantages that the utility model is a brand-new product integrating functions such as post insulators, gap arresters, and fault indicators. The insulator arrester has built-in discharge gaps and metal zinc oxide resistors. Under normal conditions, the high-resistance surge arrester resistor and the discharge gap do not act, do not withstand continuous power frequency operating voltage, and are not easy to age in the "rest" state. Only when the specified lightning overvoltage value is exceeded, the discharge gap can be broken down. , form a short-circuit channel, and the continuous power frequency arc will burn in the outer gap, releasing overvoltage energy, effectively preventing accidents such as lightning breakage and insulator damage. High power frequency discharge voltage ensures that the arrester does not operate under operating overvoltage, and the excellent nonlinearity of the protector makes the power frequency continuous current limit very small, which is conducive to the instantaneous extinguishment of the arc;

The lower part of the insulator arrester has built-in insulation pillars that can withstand power frequency overvoltage, and the side outlet leads out in series with a fault indicator with a disconnection function. After detachment, there is an obvious disconnection point on the outside, and there is a luminous detachment wire, which is convenient for maintenance personnel to search for 24 hours;

This product can prevent flashover or breakdown of insulators caused by lightning overvoltage and then burn insulated wires under concentrated power frequency arcs, and can effectively reduce system tripping, which not only improves the safe operation level of power systems, but also greatly reduces construction workers It reduces the labor intensity, saves the limited space on the working surface, and realizes maintenance-free operation in the true sense.

Description of drawings

Fig. 1 is the overall appearance structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the internal structure of the insulator arrester in the utility model;

Fig. 3 is a structural schematic diagram of the fault indicator in the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Fig. 1, Fig. 2 and Fig. 3, the 10kV fault indication type insulator arrester described in the utility model includes an insulator arrester 1, and a fault indicator 2 is connected to the lower side of the insulator arrester 1, and the The fault indicator 2 includes a housing 15, a coil assembly 16 is arranged in the housing 15, a fault indicator detonation marking band 17 and a fault indicator electric control unit 18 are arranged below the coil assembly 16, and the fault indicator electric control unit 18 is arranged. The insulator lightning arrester 1 includes an umbrella body 3, and an upper fitting 4 and a lower fitting 5 arranged at the upper and lower ends of the umbrella body 3. A high-voltage wire is connected to the upper part of the upper fitting 4, and the lower end of the lower fitting 5 is a screw end. The insulator lightning arrester 1 is fixed on the pole tower cross arm 20 through the lower fitting 5, and an insulating tube 6 is arranged inside the umbrella body 3, and a spring 7, a magnetic tube 8, four Resistor sheet 9, aluminum electrode 10 and insulating pad 11, conical copper sheets 12 are respectively provided at the upper and lower ends of the magnetic tube 8, the aluminum electrode 10 is connected with the extending screw rod 13, and the fault indicator 2 Set on the extending screw rod 13, a sheath 19 is provided on the extending screw rod 13 between the umbrella body 3 and the fault indicator 2, the sheath 19 and the umbrella body 3 are integrally formed, and the extending screw rod 13 Between the screw end of the lower fitting 5 and the luminous escape wire 14, a fastening nut is arranged on the screw end of the overhanging screw 13 and the lower fitting 5.

The utility model is a brand-new product integrating the functions of post insulator, gap arrester and fault indicator. The insulator arrester has a built-in discharge gap and metal zinc oxide resistance sheet. Under normal conditions, the high-resistance arrester resistance sheet and discharge gap do not act , does not withstand continuous power frequency working voltage, and is not easy to age in the "rest" state. Only when the specified lightning overvoltage value is exceeded, the discharge gap can be broken down to form a short circuit channel, and the continuous power frequency arc will burn in the outer gap, releasing the overvoltage Voltage energy, effectively prevent accidents such as lightning damage, disconnection and insulator damage. After the voltage is released, the resistive sheet of the arrester returns to high resistance, and the gap discharge stops. The power frequency discharge voltage with a high gap ensures that the arrester does not operate under the operating overvoltage and protects The excellent non-linearity of the device makes the power frequency freewheeling limit very small, which is conducive to the instantaneous extinguishment of the arc; the lower part of the insulator arrester has built-in insulation pillars that can withstand power frequency overvoltage, and the side outlet leads out in series with a fault indicator with a disconnection function. When a fault occurs, the fault indicator will be disconnected, effectively avoiding the single-phase grounding caused by the fault of the lightning arrester. After the disconnector is disconnected, there will be an obvious disconnection point outside, and there will be a luminous disconnection wire, which is convenient for the maintenance personnel to search for 24 hours; this product can prevent Lightning overvoltage causes insulator flashover or breakdown and then burns the insulated wire under concentrated power frequency arc, and can effectively reduce system tripping, which not only improves the safe operation level of the power system, but also greatly reduces the labor intensity of construction workers. At the same time, it saves the limited space on the working surface and realizes the real maintenance-free operation.

The utility model provides a kind of train of thought and method, and there are many methods and approaches for realizing the technical solution. The above description is only a preferred embodiment of the utility model. It should be pointed out that for those of ordinary skill in the art, Under the premise of not departing from the principle of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model, and each component that is not clear in the present embodiment can be improved by the prior art. accomplish.

Claims (7)

1.10kV fault indication type insulator arrester, its characterized in that: it includes insulator arrester (1) lower part one side is connected and is equipped with fault indicator (2), insulator arrester (1) is including umbrella body (3) to and establish last gold utensil (4) and lower gold utensil (5) at both ends about umbrella body (3), the lower extreme of gold utensil (5) is the screw rod end down be equipped with insulating tube (6) in umbrella body (3) from last spring (7), magnet pipe (8), a plurality of resistance card (9), aluminium electrode (10) and insulating pad (11) down be equipped with conical copper sheet (12) respectively at the upper and lower both ends of magnet pipe (8), aluminium electrode (10) link to each other with overhanging screw rod (13), fault indicator (2) are established on overhanging screw rod (13), be equipped with between the screw rod end of screw rod (13) and lower gold utensil (5) and break away from night light wire (14).

2. The 10kV fault indication type insulator arrester of claim 1, wherein: the fault indicator (2) comprises a shell (15), a coil assembly (16) is arranged in the shell (15), and a fault indicator explosion marking belt (17) and a fault indicator electronic control unit (18) are arranged below the coil assembly (16).

3. The 10kV fault indication type insulator arrester of claim 1, wherein: the upper part of the upper hardware fitting (4) is connected with a high-voltage lead.

4. The 10kV fault indication type insulator arrester of claim 1, wherein: four resistor discs (9) are arranged.

5. The 10kV fault indication type insulator arrester of claim 1, wherein: a sheath (19) is arranged on the extended screw (13) between the umbrella body (3) and the fault indicator (2), and the sheath (19) and the umbrella body (3) are integrally formed.

6. The 10kV fault indication type insulator arrester of claim 1, wherein: the insulator lightning arrester (1) is fixed on the pole tower cross arm (20) through a lower hardware fitting (5).

7. The 10kV fault indication type insulator arrester of claim 1, wherein: and fastening nuts are arranged at the screw ends of the overhanging screw (13) and the lower hardware fitting (5).

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