CN209591678U - Pillar insulator with multi-chamber arrester - Google Patents

Abstract

The utility model discloses a kind of pillar insulators with multi-chamber arrester.The pillar insulator with multi-chamber arrester also has the multi-chamber arrester for being also secured at insulator upper end and forms fixed air gap with the electrode for being fixed on insulator lower end equipped with the fixture of the power line route for holding on the insulator.Having the technical effect that for the utility model extinguishes electrical discharge arc in fixed air gap, without disconnecting the voltage in power line.

Description

Pillar insulator with multi-chamber arrester

Technical field

The utility model relates to electrical engineerings, more particularly, to protect the electrical equipment including power line from overvoltage The protective device of (such as thunder and lightning).

Background technique

A kind of thunder-lightning pillar insulator known from patent CN200710042031.3, having includes two clamping members The fixture of part.Lower clamping element is equipped with conducting rod, wherein the lower end terminal of its lower end and insulator forms fixed air gap.

The shortcomings that insulator is to need the voltage disconnection in power line excessively electric by thunder and lightning in fixed discharging gap to extinguish Electrical discharge arc caused by pressing, because such electrical discharge arc has high-amperage and keeps in the case where no voltage disconnects In self―sustaining state.

Utility model content

The purpose of the utility model is to provide in the fixation air gap being arranged on pillar insulator, because of overvoltage (including thunder Electricity) and the extinguishing of the electrical discharge arc of generation, the insulator can keep power line route without disconnecting the voltage in power line.

The purpose is realized by the pillar insulator configured with multi-chamber arrester, which fixes Fixed air gap is formed in one of the both ends of the insulator, and with the electrode for the other end for being fixed on the insulator.

Multi-chamber arrester can be fixed on the upper end or lower end of insulator.In addition, multi-chamber arrester can be straight line Shape or curve (bending) shape can be a part of such as circumference or ellipse.

In one embodiment, pillar insulator includes bar and the insulator body using polymer manufacture, wherein polymerizeing Object can be, such as silicon rubber, and glass fibre manufacture can be used in bar.In another embodiment, pillar insulator packet It includes the bar that glass fibre manufacture can be used and the insulator body of porcelain manufacture can be used.In addition, well known in the prior art Or the other embodiments of the pillar insulator hereafter designed are also feasible.

Power line route can be fixed to the upper end of pillar insulator by the element for fixing route, for example, passing through Use the binding device that can be metal or dielectric extension wire or rope manufacture.However, in a preferred embodiment, pillar Insulator is held on the insulator equipped with the fixture for power line route.

Fixture for power line route can be made up of casting or punching press or other methods.Fixture may include two folders Tight element.Clamping element can be plane.In one embodiment, clamping element can be bolted by one or more Against each other.Clamping element can be equipped with multiple grooves.In addition, clamping element can puncture protrusion equipped with one or more.

Multi-chamber arrester preferably includes elongated insulation component.The discharge electrode for falling back on electric discharge chamber is located at insulation member The inside of part, wherein electric discharge chamber has the outlet for the outer surface for leading to insulation component.Discharge electrode may be mounted at insulation member In part, so that they form discharging gap in electric discharge chamber, wherein the size (the distance between electrode) of discharging gap is less than Thickness for the dielectric layer for manufacturing insulation component and separating the outer surface of discharging gap and insulation component.

The outlet of electric discharge chamber may be located remotely from insulator.For example, the outlet of electric discharge chamber can be perpendicular to across insulator The plane of axis and multi-chamber arrester.Elongated insulator body can have along discharge electrode arrange and with discharge electrode phase Rigid rod at a certain distance.Multi-chamber arrester can have termination electrode in end, participate in forming fixed air gap, middle-end Electrode is connected directly or by one or more discharge electrodes of discharging gap and arrester.

Lower clamping element can have protrusion, the protrusion be inserted into multi-chamber arrester in and with elongated insulation component machine Tool connection, and also connect directly or by discharging gap with one or more discharge electrodes.

Fixture can have fixture with casing, and casing can receive multi-chamber arrester from side relevant to insulator Elongated insulation component or the connection electrode with connecting insulator and arrester, mechanically by insulation component or connection electricity Pole is fastened in it.

The upper end of insulator can have opening, which is fabricated such that the elongated insulation component of multi-chamber arrester Or the connection electrode of connecting insulator and arrester can be inserted wherein.

The technical effect of the utility model is to ensure that the extinguishing of electrical discharge arc in fixed air gap without disconnecting in power line Voltage.This is because multi-chamber arrester includes the discharging gap of many possible discharge currents of limitation.Due to discharge current By fixed air gap (inter alia) flowing, multi-electrode arrester and solid after limiting value causes overvoltage pulse to terminate The electrical discharge arc automatic distinguishing in air gap is determined, without disconnecting power voltage line.

Detailed description of the invention

Fig. 1 shows the first embodiment of the utility model；

Fig. 2 shows the second embodiments of the utility model；

Fig. 3 shows the 3rd embodiment of the utility model.

Specific embodiment

Hereinafter, the utility model will be described with reference to the drawings.Attached drawing shows pillar insulation according to the present utility model The possibility embodiment of son, does not limit protection scope.The utility model described embodiment is also not restrictive, but uses In the spirit for explaining the utility model." Top-Bottom " orientation of pillar insulator follows insulator position shown in Fig. 1-3 It sets.The orientation of insulation component about the orientation according to the present utility model and the reference of position are only used for describing in more detail. This means that pillar insulator can tilt in a horizontal plane or the end by fixing for route in some installation modifications Under direction.However, thinking by convention in the case where unprotected scope limitation, the insulator end fixed for route It is the end and upper end for insulator to be fixed to object to be protected, for example, electric power transmission tower is the lower end of insulator.Protect model It encloses and is only limited by the claim of the utility model.

As shown in Figure 1-3, pillar insulator, equipped with multi-chamber arrester 2, which is fixed to insulator 1 upper end simultaneously forms fixed air gap (gap) with the electrode 6 for the lower end for being fixed to insulator.In other embodiments, multi-chamber Arrester can be fixed to the lower end of insulator, so that it can form fixed gas with the electrode for being fixed to insulator upper end Gap.If electrode is placed in the lower end of insulator, be fixed on insulator end and participating in be formed the electrode of fixed air gap with it is to be protected Object (such as electric power transmission tower) is directly electrically connected and/or is electrically connected by lower end terminal 4 and/or installs fixture 9.In addition, if The electrode is placed in the upper end of insulator, then it is directly electrically connected with power line route and/or by upper end terminal 3 and/or fixture Or element electrical connection.

Insulator can equipped with the fixture for power line route, (Fig. 1-3 be only with End terminations 3 in the upper end of insulator Top form show a part of fixture).For power line route fixture can (Fig. 1-3, which is shown, to be set by casting In the cast member of the fixture on the top of End terminations 3) or punching press or other methods be made.Fixture for power line route can To include two clamping elements, these clamping elements can be such as plane.The element of fixture can against each other, for example, It is bolted by one or several.The use of bolt simplifies fixed and keeps its more reliable.Clamping element can be equipped with multiple Groove, more reliably to keep conducting wire.One or two clamping element can puncture protrusion equipped with one or more, be used for Wire insulation punctures (if provided) and provides electrical contact between conducting wire and clamping element.

The electrode 4 of lower part fixed to insulator 1 and also referred to as lower end terminal is used to be fixed to electric power transmission tower, such as solid Surely its transverse arm is arrived.It can be connected through a screw thread and be fixed, and in order to realize that this is fixed, electrode 4 can pacify equipped with screw thread Clamps 9.The electrode 4 can have metal protuberance 6, and the purpose is to the free ends (unlocked) with multi-chamber arrester 2 (especially It is End terminations 5) form fixed air gap.

Multi-chamber arrester 2 preferably includes elongated insulation component.The discharge electrode for falling back on electric discharge chamber is located at insulation In element.Electric discharge chamber has the outlet for the outer surface for leading to insulation component.In the insulation component of the near exit of electric discharge chamber Outer surface on protrusion 7 can be set, be used as guidance by discharge caused by electric discharge chamber plasma discharge, and also Reduce a possibility that discharge from electric discharge chamber merges.

Discharge electrode is mounted in insulation component and forms discharging gap in electric discharge chamber, and wherein the size in gap is less than For manufacturing the thickness of the dielectric layer of insulation component, dielectric layer the outer surface of discharging gap and insulation component is separated (that is, Substantially, the size in gap is less than the depth of electric discharge chamber).

The outlet of electric discharge chamber may be located remotely from insulator.For example, they can be perpendicular to across insulator as shown in Figs. 1-3 The plane of axis and multi-chamber arrester.The elongated insulation component of multi-chamber arrester has bending (curve) shape, for example, as schemed Shown in 1-3, it is a part of circumference or ellipse (arc), to provide the increase between the outlet 7 and insulator 1 of electric discharge chamber Distance, and the fixation air gap being formed between the lower end electrode 5 and 6 of insulator 1.

Not by the other embodiments shown in Fig. 1-3, multi-chamber arrester can be rectilinear form, this to manufacture Arrester is easier.In order to obtain required rigidity, elongated insulator body can equipped with discharge electrode at a distance of certain Distance and the rigid rod arranged along discharge electrode (and preferably in insulator body).In the feelings that arrester is linear Under condition, bar be also it is straight, this be conducive to manufacture arrester.Polymeric material (such as silicon is preferably used in the insulation component of arrester Rubber) manufacture.

Multi-chamber arrester 2 can have the terminal electrode 5 for participating in forming fixed air gap in end, wherein terminal electrode with One or more discharge electrodes of arrester connect.Hereinafter, directly (directly, electric current) or discharging gap can be passed through Offer is electrically coupled or connects.

In the other end of multi-chamber arrester, i.e., the one end being connect with the top of insulator, one or several discharge electrodes Can be connect directly or by discharging gap or by using connection electrode with fixture, in turn, connection electrode can directly or It is connect by discharging gap with fixture and/or one or more discharge electrodes.

The connection of multi-chamber arrester and insulator can carry out in several ways.In one embodiment, under fixture The End terminations of clamping element or insulator can have the protrusion in insertion multi-chamber arrester and can with it is elongated exhausted Edge element has mechanical connection, and also connect with one or more discharge electrodes directly or by discharging gap.This protrusion It is properly termed as connection electrode, is electrically connected with the lower clamping element machinery of the fixture of insulator.

In another embodiment shown in Fig. 1, fixture can have the casing 8 connecting with End terminations 3, wherein multi-cavity The elongated insulation component or connection electrode of room arrester 2 can be inserted into from side (side is related to insulator) and pass through example As the mode of crimping is mechanically fixed.Casing can be electrically connected directly or by discharging gap with fixture, also may be embodied in folder In tool.For multi-electrode arrester, casing (can directly and/or can be passed through by one or more discharge electrodes or connection electrode The connection electrode that discharging gap is coupled with casing and one or more discharge electrodes) it is coupled directly or by discharging gap.

In another embodiment shown in Fig. 2, for example, multi-electrode arrester, elongated insulation component or this In the case of include the upper end that connection electrode in arrester is inserted into insulator groove (hub) or opening in.In spy Determine in embodiment, when multi-electrode arrester is fixed on insulator and fixing lightning arrester insulation element in insulator, Fixture can be coupled by discharging gap or by connection electrode with one or more discharge electrodes of arrester, in turn, should Connection electrode can couple directly and/or by discharging gap with fixture or one or several extraction electrodes again.

In another specific embodiment shown in Fig. 2, when multi-electrode arrester 2 passes through the company of the opening in insulator When receiving electrode is fixed on insulator, connection electrode can be connect directly or by discharging gap with fixture.It is possible at one In embodiment, connection electrode can also cross in insulator opening and fixture or hardware (such as the upper end end in Fig. 2 3) or with fixture is electrically coupled pipe or plate (directly or by discharging gap), and put on the insulator.

In Fig. 2, multi-chamber arrester 2 is also inserted into casing 8, but be not by the crimping of casing 8 but by using Other methods are fixed.The screw thread in Fig. 2 can be passed through by the connection electrode or insulation component of the arrester of the opening of insulator Fixing piece 10 (nut, wing nut etc.) or other fixed devices known in the art are fixed.

Fig. 3 shows the embodiment of the pillar insulator with multi-chamber arrester and fixed air gap, in addition to multi-chamber is kept away Except the fixation of thunder device, the structure in Fig. 2 is followed.In the structure in figure 3, multi-chamber arrester 2 is inserted into casing 8, and Casing is crimped to fixed arrester.In this way, the fixation of arrester to pillar insulator is simplified.

When arrester is fixed to upper insulator end, that is, when being fixed to the end of fixed power line route, about the implementation Example describes the modification of the fixation of above-mentioned multi-chamber arrester.However, the utility model further includes that arrester is fixed on lower insulation The embodiment of sub- end is fixed to the end for being fixed on pillar insulator in electric power transmission tower.Therefore, when arrester is logical When crossing lower end terminal and accordingly replacing upper end terminal or fixture and be fixed to lower end terminal, be described about fixed variation example It can also realize in this case.

Insulator work mode with multi-chamber arrester and fixed air gap is as follows.In normal operating, when not having When voltage, the voltage of the fixture of the current potential with power circuit be applied to fixture and electrode fixed to lower insulator end it Between one of discharging gap.In particular, be directly in electrical contact if one of fixture and these discharge electrodes have, it can be by voltage A discharging gap being applied between the discharge electrode of multi-chamber arrester.In another embodiment, provided that in this way Discharging gap, then can apply a voltage to the discharging gap between fixture and discharge electrode (or connection electrode).

When not having overvoltage, discharging gap will not be destroyed by the voltage rating of power line, therefore electric current will not Flow through multi-chamber arrester and fixed air gap (may be in addition to leakage current, wherein fixed air gap is for reducing this specific currents).

When overvoltage appears on fixture, for example, due to thunder and lightning hit power line or its near, discharging gap is due to putting The dielectric strength in electric gap is not enough to prevent the fact that puncture under over-voltage condition and breakdown.When multi-chamber arrester Lower part discharge electrode or its termination electrode (provided that) when obtaining overvoltage current potential, fixed air gap is destroyed and electric current passes through Multi-chamber arrester and fixed air gap flow to power line pylon, and this ensures to reduce the overvoltage on power line route.

After overvoltage pulse termination and when the voltage zero-cross of the power line of industrial frequency (50 or 60Hz), multi-cavity Electrical discharge arc between the discharge electrode of room arrester is off, because multi-chamber arrester includes many possible electric discharges of limitation The discharging gap of electric current.Therefore, electrical discharge arc automatic distinguishing after overvoltage pulse termination, and there is no voltage disconnected in power line It opens.

The fixation air gap sequentially installed with multi-chamber arrester reduces the leakage current by multi-chamber arrester.

Claims (21)

1. a kind of pillar insulator with multi-chamber arrester, the multi-chamber arrester are fixed on one end of the insulator And fixed air gap is formed with the electrode for the other end for being fixed on the insulator, which is characterized in that the multi-chamber arrester packet Elongated insulation component is included, wherein the indoor discharge electrode of discharge cavity is located at the inside of the insulation component, wherein the electric discharge Chamber has the outlet for the outer surface for leading to the insulation component.

2. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the multi-chamber is kept away Thunder device is fixed to insulator upper end.

3. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the multi-chamber is kept away Thunder device is fixed to insulator lower end.

4. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the multi-chamber is kept away Thunder device is curved shape.

5. the pillar insulator according to claim 4 with multi-chamber arrester, which is characterized in that elongated insulation member Part has the shape of a part of ellipse or circumference.

6. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the multi-chamber is kept away Thunder device is linear.

7. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that described that there is multi-cavity The pillar insulator of room arrester includes bar and the insulator body using polymer manufacture.

8. the pillar insulator according to claim 7 with multi-chamber arrester, which is characterized in that the polymer is Silicon rubber, the bar use glass fibre manufacture.

9. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that described that there is multi-cavity The pillar insulator of room arrester includes bar and the insulator body using porcelain manufacture.

10. the pillar insulator according to claim 9 with multi-chamber arrester, which is characterized in that the bar uses Glass fibre manufacture.

11. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that described with more The pillar insulator of chamber arrester is on the insulator upper end equipped with the fixture for power line route.

12. the pillar insulator according to claim 11 with multi-chamber arrester, which is characterized in that be used for the electricity The fixture of line of force route is manufactured by casting.

13. the pillar insulator according to claim 11 with multi-chamber arrester, which is characterized in that be used for the electricity The fixture of line of force route is by stamped.

14. the pillar insulator according to claim 11 with multi-chamber arrester, which is characterized in that be used for the electricity The fixture of line of force route includes two clamping elements.

15. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the electric discharge electricity Pole is located in the insulation component and forms discharging gap in the electric discharge chamber, wherein the size of the discharging gap is less than Thickness for the dielectric layer for manufacturing the insulation component and separating the outer surface of the discharging gap and the insulation component Degree.

16. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the discharge cavity The outlet of room is far from the insulator.

17. the pillar insulator according to claim 16 with multi-chamber arrester, which is characterized in that the discharge cavity The exit normal of room is in the plane for passing through insulator axis and the multi-chamber arrester.

18. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that elongated insulation Sub- ontology is equipped with along discharge electrode arrangement and the rigid rod separated by a distance with the discharge electrode.

19. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that the multi-chamber Arrester has the termination electrode for participating in forming fixed air gap in end, wherein the termination electrode directly or by discharging gap with One or more discharge electrodes of the arrester connect.

20. the pillar insulator according to claim 11 with multi-chamber arrester, which is characterized in that the fixture tool There is casing, described sleeve pipe can receive the elongated insulation component of the multi-chamber arrester from side relevant to insulator or incite somebody to action The connection electrode that the insulator is connect with the arrester, wherein described sleeve pipe is manufactured to insulation component or connection electrode It mechanically fastens inside it.

21. the pillar insulator according to claim 1 with multi-chamber arrester, which is characterized in that described with more The pillar insulator of chamber arrester has opening in the upper end of the insulator, and the opening is fabricated such that the multi-cavity The elongated insulation component or the connection insulator of room arrester and the connection electrode of the arrester can be inserted into wherein.