CN111210955A - Multi-cavity gap lightning arrester - Google Patents
Multi-cavity gap lightning arrester Download PDFInfo
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- CN111210955A CN111210955A CN202010129420.5A CN202010129420A CN111210955A CN 111210955 A CN111210955 A CN 111210955A CN 202010129420 A CN202010129420 A CN 202010129420A CN 111210955 A CN111210955 A CN 111210955A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
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Abstract
The invention belongs to the technical field of lightning arresters, and particularly relates to a multi-chamber gap lightning arrester. In the multi-chamber gap arrester, the air gap formed between the first discharge ball and the second discharge ball is a main air gap, the fixed gap insulator and the low-voltage end of the multi-chamber gap arrester body are fixed on the reference surface of the fixing piece, when the reference surface is a plane, the low-voltage ends of the fixed gap insulator and the multi-chamber gap arrester body can be ensured to be on the same plane, the fixed gap insulator and the multi-chamber gap arrester body are connected into a whole through the conductive support piece, the main air gap cannot deviate under the action of external force, and the stability of the multi-chamber gap arrester during lightning impulse action is ensured.
Description
Technical Field
The invention belongs to the technical field of lightning arresters, and particularly relates to a multi-chamber gap lightning arrester.
Background
At present, the multi-chamber gap type line arrester is widely applied, and has the characteristics of simple manufacture, large through flow, no heat accumulation, no maintenance, long service life and the like, but along with the popularization and application of the arrester, the distance of the series main air gap can be deviated due to the wind power, the movement of a lead and/or the fatigue of a fixing piece and other reasons, the effective lightning protection can be avoided when the deviation is too large, and the line fault can be caused even when the deviation is too small.
Aiming at the problems, some fixed-gap multi-chamber series gap arresters appear in the market, but the fixed-gap multi-chamber series gap arresters are mainly characterized by arc extinguish chamber intervals, umbrella skirt materials or discharge gap distances and the like, and all the fixed-gap arresters are insulators and lightning arresters which form a pure air gap, and are not connected with each other in a supporting mode, and due to the fact that the lengths of the insulators and the multi-chamber bodies are too long, the two bodies deform under the condition of a little external force, and therefore the main air gap is deviated.
Disclosure of Invention
In view of this, the present invention provides a multi-chamber gap arrester, which is used to solve the problem that the main air gap of the existing multi-chamber gap arrester is easy to shift.
The specific technical scheme of the invention is as follows:
a multi-chamber gap arrester comprising: the lightning arrester comprises a gap insulator, a supporting insulator, a multi-chamber gap lightning arrester body, a conductive supporting piece and a fixing piece;
the supporting insulator and the multi-chamber gap lightning arrester body are fixed on the fixing piece, and the gap insulator and the supporting insulator form a fixed gap insulator;
the gap insulator comprises a first epoxy rod, a gap insulator body, a high-voltage end electrode, an arc striking rod and a discharge screw rod, the gap insulator body is sleeved on the first epoxy rod, the high-voltage end electrode and the discharge screw rod are respectively arranged at the first end and the second end of the first epoxy rod, the high-voltage end electrode is connected with the arc striking rod, the arc striking rod and the discharge screw rod are respectively connected with a first discharge ball and a second discharge ball, and an air gap is formed between the first discharge ball and the second discharge ball;
the multi-chamber gap arrester body with parallel arrangement about the fixed gap insulator, electrically conductive support piece connects the fixed gap insulator with the multi-chamber gap arrester body, electrically conductive support piece be used for with the conduction of discharging of fixed gap insulator extremely the multi-chamber gap arrester body.
Preferably, the centers of gravity of the first discharge ball and the second discharge ball are located on different planes.
Preferably, the gap insulator and the multi-chamber gap arrester body are axially parallel and form a plane parallel to the direction of the gravity line.
Preferably, the support insulator comprises a second epoxy rod, a support insulator body, a first connecting pipe and a second connecting pipe;
the supporting insulator body is sleeved on the second epoxy rod, the first connecting pipe and the second connecting pipe are respectively connected to the first end and the second end of the supporting insulator body, the supporting insulator is fixed on the fixing piece through the first connecting pipe, and the supporting insulator is connected with the gap insulator through the second connecting pipe.
Preferably, the pipe wall of the second connecting pipe is provided with a conductive support piece crimping hole, and the conductive support piece is connected with the fixed gap insulator through the conductive support piece crimping hole.
Preferably, the gap insulator further comprises a third connecting pipe;
the third connecting pipe is sleeved in the second connecting pipe, the pipe walls of the second connecting pipe and the third connecting pipe are respectively provided with a first discharging screw hole and a second discharging screw hole, and the discharging screw is fixed on the gap insulator through the first discharging screw hole and the second discharging screw hole;
the high-voltage end electrode, the first connecting pipe, the second connecting pipe and the third connecting pipe are all provided with damp-proof rings.
Preferably, the supporting insulator is a porcelain cross arm insulator or a composite outer sleeve insulator.
Preferably, the supporting insulator is a porcelain cross arm insulator, and the conductive supporting piece is connected with the supporting insulator through a hoop and a hoop adapter plate;
the hoop is of a U-shaped structure, the hoop adapter plate is of a T-shaped structure, and the hoop adapter plate is connected with the hoop and the conductive support piece through bolts.
Preferably, the supporting insulator is a composite jacket insulator, and the conductive supporting piece is connected with the supporting insulator through a straight plate hardware fitting;
the straight plate hardware fitting is connected with the supporting insulator and the conductive supporting piece through bolts.
Preferably, the fixed gap insulator is of an integrally formed structure.
In summary, the present invention provides a multi-chamber gap arrester, comprising: the lightning arrester comprises a gap insulator, a supporting insulator, a multi-chamber gap lightning arrester body, a conductive supporting piece and a fixing piece; the supporting insulator and the multi-chamber gap lightning arrester body are fixed on the fixing piece, and the gap insulator and the supporting insulator form a fixed gap insulator; the gap insulator comprises a first epoxy rod, a gap insulator body, a high-voltage end electrode, an arc striking rod and a discharge screw rod, the gap insulator body is sleeved on the first epoxy rod, the high-voltage end electrode and the discharge screw rod are respectively arranged at the first end and the second end of the first epoxy rod, the high-voltage end electrode is connected with the arc striking rod, the arc striking rod and the discharge screw rod are respectively connected with a first discharge ball and a second discharge ball, and an air gap is formed between the first discharge ball and the second discharge ball; the multi-chamber gap arrester body with parallel arrangement about the fixed gap insulator, electrically conductive support piece connects the fixed gap insulator with the multi-chamber gap arrester body, electrically conductive support piece be used for with the conduction of discharging of fixed gap insulator extremely the multi-chamber gap arrester body.
According to the invention, the air gap formed between the first discharge ball and the second discharge ball is a main air gap, the low-voltage ends of the fixed gap insulator and the multi-chamber gap lightning arrester body are fixed on the reference surface of the fixing part, when the reference surface is a plane, the low-voltage ends of the fixed gap insulator and the multi-chamber gap lightning arrester body can be ensured to be on the same plane, and the fixed gap insulator and the multi-chamber gap lightning arrester body are connected into a whole through the conductive supporting piece, so that the main air gap cannot deviate under the action of external force, and the stability of the multi-chamber gap lightning arrester during lightning impulse action is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a fixed gap insulator in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a gap insulator in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a multi-chamber gap arrester body in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an electrically conductive support member in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 6 is a schematic view showing a structure of a fixing member in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 7 is a schematic structural view of a supporting insulator body in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 8 is a schematic view showing the structure of a second epoxy rod in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 9 is a schematic view showing a structure of a first connection pipe in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 10 is a schematic view showing the construction of a second connection pipe in a multi-chamber gap arrester according to a first embodiment of the present invention;
fig. 11 is a schematic structural view of a high-voltage terminal electrode in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 12 is a schematic view showing the structure of an arc striking rod in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 13 is a schematic structural view of a third connection pipe in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 14 is a schematic structural view of a discharge screw in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 15 is a schematic structural view of a gap insulator body in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 16 is a schematic structural view of a first epoxy rod in a multi-chamber gap arrester according to an embodiment of the present invention;
fig. 17 is a schematic view of a multi-chamber gap arrester according to a second embodiment of the present invention;
fig. 18 is a schematic view showing a structure of a supporting insulator in a multi-chamber gap arrester according to a second embodiment of the present invention;
fig. 19 is a schematic view of the structure of an electrically conductive support member in a multi-chamber gap arrester according to a second embodiment of the present invention;
fig. 20 is a schematic view showing a structure of a fixing member in a multi-chamber gap arrester according to a second embodiment of the present invention;
fig. 21 is a schematic view illustrating a structure of an anchor ear in a multi-chamber gap arrester according to a second embodiment of the present invention;
fig. 22 is a schematic structural view of a hoop adapter plate in a multi-chamber gap arrester according to a second embodiment of the present invention;
fig. 23 is a schematic view of a multi-chamber gap arrestor in accordance with a third embodiment of the present invention;
fig. 24 is a schematic view showing the structure of a support insulator in a multi-chamber gap arrester according to a third embodiment of the present invention;
fig. 25 is a schematic structural view of a straight plate fitting in a multi-chamber gap arrester according to a third embodiment of the present invention;
illustration of the drawings:
1. a support insulator; 11. a support insulator body; 12. a second epoxy rod; 13. a first connecting pipe; a second connecting tube; 131. a damp-proof ring; 132. a second epoxy rod crimping hole; 133. a first mounting fixing hole; 141. a damp-proof ring; 142. the conductive support piece is pressed in the hole; 143. a through hole; 144. a first discharge screw hole;
2. a gap insulator; 21. a high voltage terminal electrode; 22. an arc striking rod; 23. a third connecting pipe; 24. a discharge screw; 25. an air gap; 26. a gap insulator body; 27. a first epoxy rod; 211. the arc striking rod is pressed in a hole; 212. a first epoxy rod crimping hole; 213. a damp-proof ring; 221. a first discharge ball; 231. a damp-proof ring; 232. a third epoxy rod crimping hole; 233. a second discharge screw hole; 234. a second mounting fixing hole; 241, mounting threads; 242. a connecting member; 243. a second discharge ball;
3. a fixing member; 4. a conductive support member; 5. a multi-chamber gap arrester body; 6. a fixing member; 7. hooping; 8. a hoop adapter plate; 9. a conductive support member; 10. a support insulator; 15. a support insulator; 16. a straight plate hardware fitting.
Detailed Description
The invention provides a multi-chamber gap arrester, which is used for solving the problem that the main air gap of the existing multi-chamber gap arrester is easy to deviate.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 16, a first embodiment of a multi-chamber gap arrester according to an embodiment of the present invention includes: the lightning arrester comprises a gap insulator 2, a supporting insulator 1, a multi-chamber gap lightning arrester body 5, a conductive supporting piece 4 and a fixing piece 3;
the supporting insulator 1 and the multi-chamber gap lightning arrester body 5 are fixed on the fixing part 3, and the gap insulator 2 and the supporting insulator 1 form a fixed gap insulator;
the gap insulator 2 comprises a first epoxy rod 27, a gap insulator body 26, a high-voltage end electrode 21, an arc striking rod 22 and a discharge screw 24, the gap insulator body 26 is sleeved on the first epoxy rod 27, the high-voltage end electrode 21 and the discharge screw 24 are respectively arranged at the first end and the second end of the first epoxy rod 27, the high-voltage end electrode 21 is connected with the arc striking rod 22, the arc striking rod 22 and the discharge screw 24 are respectively connected with a first discharge ball 221 and a second discharge ball 243, and an air gap 25 is formed between the first discharge ball 221 and the second discharge ball 243;
the multi-chamber gap arrester body 5 and the fixed gap insulator are arranged in parallel from top to bottom, the conductive support piece 4 is connected with the fixed gap insulator and the multi-chamber gap arrester body 5, and the conductive support piece 4 is used for conducting discharge of the fixed gap insulator to the multi-chamber gap arrester body 5.
In the embodiment of the present invention, the air gap 25 formed between the first discharge ball 221 and the second discharge ball 243 is an air gap, the fixed gap insulator and the low-voltage end of the multi-chamber gap arrester body 5 are fixed to the reference surface of the fixing member 3, and when the reference surface is a plane, the fixed gap insulator and the low-voltage end of the multi-chamber gap arrester body 5 can be ensured to be on the same plane, and the fixed gap insulator and the multi-chamber gap arrester body 5 are connected to each other by the conductive support member 4, so that the air gap cannot be shifted by an external force, and the stability of the multi-chamber gap arrester during lightning impulse operation is ensured.
Further, the low voltage end of the fixed gap insulator and the multi-chamber gap arrestor body 5 may be fixed to the reference surface of the fixing member 3 by a fastening member.
In the embodiment of the invention, the centers of gravity of the first discharge ball 221 and the second discharge ball 243 are located on the non-same plane, so that the hidden danger that a discharge gap cannot be formed due to rainwater connection is avoided.
In the embodiment of the present invention, the gap insulator 2 and the multi-chamber gap arrester body 5 are axially parallel to each other, and the plane formed by the gap insulator and the multi-chamber gap arrester body is parallel to the gravity line direction. When this multi-chamber clearance arrester uses, look down from aerial, whole device is for perpendicular integrative design, falls the bird and can not cross over between clearance insulator 2 and the multi-chamber clearance arrester body 5, can avoid falling the short circuit that the bird arouses or the risk that the nest brought.
In the embodiment of the invention, the high-voltage terminal electrode 21 is provided with a moisture-resisting ring 213 and is provided with an arc-striking rod crimping hole 211 and a first epoxy rod crimping hole 212, the diameter of the high-voltage terminal electrode 21 is preferably phi 26-40 mm, the length of the high-voltage terminal electrode 21 is preferably 44-90 mm, the outer diameter of the moisture-resisting ring 213 is preferably phi 22-30 mm, and the surface of the high-voltage terminal electrode 21 is preferably subjected to rough treatment; the diameter of the first epoxy rod crimping hole 212 is preferably 14.1-25.1 mm, the depth of the first epoxy rod crimping hole 212 is preferably 10-30 mm, the diameter of the striking rod crimping hole 211 is preferably 6.1-14.1 mm, the depth of the striking rod crimping hole 211 is preferably 12-25 mm, the striking rod 22 and the high-voltage end electrode 21 can be tightly crimped together through a crimping machine, and the transverse fit with the central line of the striking rod 22 in the vertical direction of the central line of the striking rod crimping hole 211 is guaranteed, so that the striking rod 22 is perpendicular to the horizontal direction of the gap insulator 2. The third connecting pipe 23 and the center of gravity of the arc striking rod 22 are not on the same plane, so that the hidden troubles of power grid faults, rainwater connection lines and the like caused by bird nesting are avoided.
In the embodiment of the invention, the supporting insulator 1 comprises a second epoxy rod 12, a supporting insulator body 11, a first connecting pipe 13 and a second connecting pipe 14;
the supporting insulator body 11 is sleeved on the second epoxy rod 12, the first connecting pipe 13 and the second connecting pipe 14 are respectively connected to the first end and the second end of the supporting insulator body 11, the supporting insulator 1 is fixed on the fixing part 3 through the first connecting pipe 13, and the supporting insulator 1 is connected with the gap insulator 2 through the second connecting pipe 14.
In the embodiment of the present invention, the wall of the second connection pipe 14 is provided with a conductive support member crimping hole 142, and the conductive support member 4 is connected to the fixed gap insulator through the conductive support member crimping hole 142.
In the embodiment of the present invention, the gap insulator 2 further includes a third connecting pipe 23;
the third connecting pipe 23 is sleeved in the second connecting pipe 14, the pipe walls of the second connecting pipe 14 and the third connecting pipe 23 are respectively provided with a first discharging screw hole 144 and a second discharging screw hole 233, and the discharging screw 24 is fixed to the gap insulator 2 through the first discharging screw hole 144 and the second discharging screw hole 233;
the high-voltage end electrode 21, the first connecting pipe 13, the second connecting pipe 14 and the third connecting pipe 23 are all provided with moisture-resistant rings.
In the embodiment of the invention, the first connecting pipe 13 is a low-pressure end, the outer diameter of the supporting insulator body 11 is preferably phi 20-35 mm, the total length of the supporting insulator body 11 is preferably 220-400 mm, 3-6 umbrella skirts are preferably evenly distributed on the supporting insulator body 11, the outer diameter of each umbrella skirt is preferably phi 54-65 mm, the thickness of each umbrella skirt is preferably 1.5-3 mm, the front end and the rear end of the supporting insulator body 11 are provided with sealing silicon rubber serving as moisture-proof rings, the outer diameter of each sealing silicon rubber is preferably phi 32-46 mm, and the thickness of each sealing silicon rubber is preferably 10-35 m;
the diameter of the second epoxy rod 12 is preferably 14-25 mm, the length of the second epoxy rod 12 is preferably 360-530 mm, the first connecting pipe 13 is provided with a moisture-blocking ring 131, the outer diameter of the moisture-blocking ring 131 is preferably 22-30 mm, the moisture-blocking ring 131 is preferably sealing silicon rubber, the surface of the first connecting pipe 13 is preferably subjected to roughening treatment, the friction force of the sealing silicon rubber and the surface of the first connecting pipe 13 in bonding is increased, the sealing silicon rubber and the surface of the first connecting pipe 13 can be effectively prevented from being peeled off to form a gap, and the moisture-blocking ring 131 can prevent moisture in air from entering the fixed insulator body;
the first connecting pipe 13 is provided with a second epoxy rod crimping hole 132 and a first mounting fixing hole 133, the diameter of the second epoxy rod crimping hole 132 is preferably phi 14.1-25.1 mm, the depth of the second epoxy rod crimping hole 132 is preferably 20-35 mm, the diameter of the first mounting fixing hole 133 is preferably 6-16 mm, and one end of the second epoxy rod 12 and the second epoxy rod crimping hole 132 of the first connecting pipe 13 can be buckled and pressed into a whole through a buckling and pressing machine;
the outer diameter of the first connecting pipe 13 is preferably 26-40 mm, and the length of the first connecting pipe 13 is preferably 40-80 mm.
In the embodiment of the present invention, the second connection pipe 14 is provided with a moisture-proof ring 141 and is provided with a conductive support crimping hole 142, a through hole 143 and a first discharging screw hole 144;
the outer diameter of the first connecting pipe 13 is preferably phi 26-40 mm, and the length is preferably 63-138 mm;
the outer diameter of the moisture-proof ring 141 is preferably phi 22-30 mm, and the surface of the first connecting pipe 13 is preferably subjected to roughening treatment;
the diameter of the conductive support piece crimping hole 142 is preferably 6.1-14.1 mm, and the depth is preferably 12-25 mm;
the diameter of the through hole 143 is preferably 14.1 to 25.1 mm. The conductive support piece crimping hole 142 and the conductive support piece 4 can be buckled and pressed into a whole through a buckling and pressing machine, two ends of the through hole 143 can tightly buckle and press the second epoxy rod 12 together through the buckling and pressing machine, and one end face of the second connecting pipe 14 is fixed between 90mm and 360mm away from the upper end of the first connecting pipe 13;
further, the screw threads of the first discharge screw hole 144 are preferably M5 to M10.
In the embodiment of the invention, the diameter of the arc striking rod 22 is preferably 6-14 mm;
the diameter of the first discharge ball 221 is preferably 6-30 mm;
further, the outer surface of the arc striking rod 22 is preferably vulcanized and encapsulated independently through a die, the encapsulation thickness is preferably 1.5-4 mm, and the first discharge ball 221 is ensured to leak in the air;
the arc ignition rod 22 and the high-voltage terminal electrode 21 can be tightly pressed together by a crimping machine, and when the central line of the arc ignition rod 22 is transversely and vertically attached to the central line of the arc ignition rod pressing hole 211, the first discharge ball 221 and the second discharge ball 243 of the discharge screw 24 form an air gap 25;
further, when the gap insulator 22 is installed, the central line of the arc striking rod 22 is horizontally aligned with the ground level, so that the hidden troubles of power grid faults, rainwater connection lines and the like caused by bird falling and nesting are avoided.
Preferably, the air gap 25 distance is preferably 30mm to 50 mm.
In the embodiment of the present invention, the third connecting tube 23 is a low-voltage terminal electrode, and the third connecting tube 23 is provided with a moisture-proof ring 231 and is provided with a third epoxy rod crimping hole 232, a second discharging screw hole 233 and a second mounting and fixing hole 234;
the outer diameter of the third connecting pipe 23 is preferably phi 26-40 mm, and the length is preferably 40-80 mm;
the outer diameter of the moisture-resisting ring 231 is preferably phi 22-30 mm, and the surface of the third connecting pipe 23 is preferably subjected to roughening treatment;
the diameter of the third epoxy rod crimping hole 232 is preferably 14.1-25.1 mm, and the depth is preferably 20-35 mm;
the screw thread of the second discharge screw hole 233 is preferably M5 to M10;
the aperture of the second mounting and fixing hole 234 is preferably 6-16 mm;
the discharge screw 24 includes a mounting thread 241, a connector 242, and a second discharge ball 243, and the discharge screw 24 may be screwed to the third connection pipe 23 through the connector 242.
In the embodiment of the invention, the outer diameter of the gap insulator body 26 is preferably phi 20-35 mm, the total length of the gap insulator body 26 is preferably 90-190 mm, 2-4 sheds are preferably evenly distributed on the gap insulator body 26, the outer diameter of the sheds is preferably phi 54-95 mm, the thickness of the sheds is preferably 1.5-3 mm, sealing silicon rubber serving as a moisture-proof ring is arranged at the front end and the rear end of the gap insulator body 26, the outer diameter of the sealing silicon rubber is preferably phi 32-46 mm, and the thickness of the sealing silicon rubber is preferably 10-35 m;
the diameter of the first epoxy rod 27 is preferably 14 to 25mm, and the length of the first epoxy rod 27 is preferably 100 to 180 mm.
The multi-chamber gap lightning arrester of the embodiment of the invention adopts the gap insulator 2, and the conductive support piece 4 is additionally arranged between the fixed gap insulator and the multi-chamber lightning arrester body, so that the air gap can not deviate under the action of external force, the stability of the multi-chamber gap lightning arrester during lightning impulse action is ensured, and the deviation of the distance of the air gap caused by wind deflection, conductor galloping, hardware fatigue and other reasons is avoided;
according to the multi-chamber gap lightning arrester disclosed by the embodiment of the invention, by setting the installation direction of the arc striking rod 22, the hidden danger of power grid faults caused by bird dropping and nesting in field operation can be effectively reduced;
in the long-time operation of scene, because the humidity of air and the erosion of rainwater and the ageing back moisture of rubber can slowly permeate along the outside of silicon rubber and gold utensil for the dielectric strength of insulator weakens, causes unable insulation even. In the multi-chamber gap lightning arrester of the embodiment of the invention, the high-voltage end electrode 21, the first connecting pipe 13, the second connecting pipe 14 and the third connecting pipe 23 are all provided with the moisture-resisting rings, so that the moisture can be effectively prevented from permeating.
In the multi-chamber gap lightning arrester provided by the embodiment of the invention, the fixed gap insulator can be in a split type structure or an integrally formed structure, the gap insulator 2 and the supporting insulator 1 can be completely independent from each other, and the gap insulator 2 can be combined with various types of supporting insulators 1, so that the structure conversion is convenient, and the multi-chamber gap lightning arrester can adapt to a complex field installation environment.
In the embodiment of the invention, two ends of the first epoxy rod 27 are respectively buckled with the high-voltage end electrode 21 and the third connecting pipe 23 to form a whole, after the first epoxy rod is independently manufactured and molded in a vulcanizing machine mold, the arc striking rod 22 and the arc striking rod crimping hole 211 of the high-voltage end electrode 21 are buckled, and the discharge screw 24 is screwed in the second discharge screw hole 233 of the third connecting pipe 23, so that the second discharge ball 243 of the discharge screw 24 and the first discharge ball 221 of the arc striking rod 22 are ensured to be within a distance of 30-50 mm to form the fixed air gap 25.
The multi-chamber gap lightning arrester provided by the embodiment of the invention can be used for overvoltage protection of transmission and distribution lines of an electric power system and can be used as a 10kV multi-chamber gap lightning arrester of various line insulators.
In the embodiment of the invention, the supporting insulator 1 and the gap insulator 2 can be formed into a whole in one step in a vulcanizing machine mould, and the vulcanizing machine mould can also be used for independently manufacturing the gap insulator 2.
The supporting insulator 1 and the gap insulator 2 can be produced into different structures according to factors such as the characteristics of an actual 10kV overhead line insulator on site, a tower structure, user requirements and the like, and are connected with the 10kV multi-chamber gap arrester body 5 to form various installation structures, the supporting insulator 1 and the gap insulator 2 can be formed into a whole by compression joint, and the lightning protection device with a fixed external series gap is formed by connecting the supporting insulator 1 and the gap insulator with the 10kV multi-chamber gap arrester body 5; the supporting insulator 1 and the gap insulator 2 can be molded by pressing respectively to form two independent parts, and a plurality of lightning protection devices with fixed outer series gaps are formed by different connection modes of the supporting insulator and the gap insulator and the field 10kV overhead line insulator.
The multi-chamber gap lightning arrester provided by the embodiment of the invention fully considers that no fixed support exists between the fixed gap insulator and the multi-chamber gap lightning arrester body 5, can ensure that the air gap is not easy to deviate, reduces the risk of bird nesting, avoids the working condition of rainwater connection, and has higher engineering application value.
The first embodiment of a multi-chamber gap arrester according to an embodiment of the present invention is described above in detail, and the second embodiment of a multi-chamber gap arrester according to an embodiment of the present invention is described below in detail.
Referring to fig. 17 to 22, in a second embodiment of the multi-chamber gap arrester according to the present invention, the supporting insulator 10 is a porcelain cross arm insulator, and the conductive supporting member 9 is connected to the supporting insulator 10 through the hoop 7 and the hoop adapter plate 8;
The second embodiment of the multiple-chamber gap arrester according to the embodiment of the present invention is described above in detail, and the third embodiment of the multiple-chamber gap arrester according to the embodiment of the present invention is described below in detail.
Referring to fig. 23 to 25, in a third embodiment of the multi-chamber gap arrester according to the embodiment of the present invention, the supporting insulator 15 is a composite outer casing insulator, and the conductive supporting member 9 is connected to the supporting insulator 15 by a straight-plate fitting 16;
the straight plate fittings 16 bolt the support insulators 15 and the conductive support members 9. Other parts are the same as those of the first embodiment, and are not described herein.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A multi-chamber gap arrester, comprising: the lightning arrester comprises a gap insulator, a supporting insulator, a multi-chamber gap lightning arrester body, a conductive supporting piece and a fixing piece;
the supporting insulator and the multi-chamber gap lightning arrester body are fixed on the fixing piece, and the gap insulator and the supporting insulator form a fixed gap insulator;
the gap insulator comprises a first epoxy rod, a gap insulator body, a high-voltage end electrode, an arc striking rod and a discharge screw rod, the gap insulator body is sleeved on the first epoxy rod, the high-voltage end electrode and the discharge screw rod are respectively arranged at the first end and the second end of the first epoxy rod, the high-voltage end electrode is connected with the arc striking rod, the arc striking rod and the discharge screw rod are respectively connected with a first discharge ball and a second discharge ball, and an air gap is formed between the first discharge ball and the second discharge ball;
the multi-chamber gap arrester body with parallel arrangement about the fixed gap insulator, electrically conductive support piece connects the fixed gap insulator with the multi-chamber gap arrester body, electrically conductive support piece be used for with the conduction of discharging of fixed gap insulator extremely the multi-chamber gap arrester body.
2. The multi-chamber gap arrester of claim 1 wherein the centers of gravity of the first and second discharge balls are located in non-coplanar planes.
3. The multi-chamber gap arrester of claim 1 wherein the gap insulator and the multi-chamber gap arrester body are axially parallel and form a plane parallel to a direction of a gravity line.
4. The multi-chamber gap arrester of claim 1 wherein the support insulator includes a second epoxy rod, a support insulator body, a first connecting tube, and a second connecting tube;
the supporting insulator body is sleeved on the second epoxy rod, the first connecting pipe and the second connecting pipe are respectively connected to the first end and the second end of the supporting insulator body, the supporting insulator is fixed on the fixing piece through the first connecting pipe, and the supporting insulator is connected with the gap insulator through the second connecting pipe.
5. A multi-chamber gap arrester according to claim 4, characterized in that the wall of the second connecting pipe is provided with an electrically conductive support member crimping hole, through which the electrically conductive support member is connected with the fixed gap insulator.
6. The multi-chamber gap arrester of claim 4 wherein the gap insulator further comprises a third connecting tube;
the third connecting pipe is sleeved in the second connecting pipe, the pipe walls of the second connecting pipe and the third connecting pipe are respectively provided with a first discharging screw hole and a second discharging screw hole, and the discharging screw is fixed on the gap insulator through the first discharging screw hole and the second discharging screw hole;
the high-voltage end electrode, the first connecting pipe, the second connecting pipe and the third connecting pipe are all provided with damp-proof rings.
7. A multi-chamber gap arrester according to claim 1, characterized in that the supporting insulator is a porcelain cross arm insulator or a composite jacket insulator.
8. The multi-chamber gap arrester of claim 7 wherein the support insulator is a porcelain cross arm insulator and the conductive support member is connected to the support insulator by a hoop and a hoop adapter plate;
the hoop is of a U-shaped structure, the hoop adapter plate is of a T-shaped structure, and the hoop adapter plate is connected with the hoop and the conductive support piece through bolts.
9. The multi-chamber gap arrester of claim 7 wherein the support insulator is a composite jacket insulator, the conductive support member being connected to the support insulator by straight hardware;
the straight plate hardware fitting is connected with the supporting insulator and the conductive supporting piece through bolts.
10. The multi-chamber gap arrester of claim 1 wherein the fixed gap insulator is a one-piece structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010129420.5A CN111210955A (en) | 2020-02-28 | 2020-02-28 | Multi-cavity gap lightning arrester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010129420.5A CN111210955A (en) | 2020-02-28 | 2020-02-28 | Multi-cavity gap lightning arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909741A (en) * | 2021-01-22 | 2021-06-04 | 国网福建省电力有限公司南平市延平区供电公司 | Multi-chamber lightning arrester suitable for high-resistance mountainous area and production process thereof |
-
2020
- 2020-02-28 CN CN202010129420.5A patent/CN111210955A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909741A (en) * | 2021-01-22 | 2021-06-04 | 国网福建省电力有限公司南平市延平区供电公司 | Multi-chamber lightning arrester suitable for high-resistance mountainous area and production process thereof |
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