LIGHTNING INDUCTION-TYPE SOLID-PHASE ARC-EXTINGUISHING LIGHTNING PROTECTOR

Abstract

Provided in the present disclosure is a lightning induction-type solid-phase arc-extinguishing lightning protector. The lightning protector primarily including a lightning protector housing, an arc-extinguishing rotating disk, a conductive metal plate, an arc-striking rod, a fastening rod, an inductive coil, an arc-extinguishing cylinder, and a counter arm. The arc-extinguishing rotating disk is mounted within the lightning protector housing, and a planar torsion spring is provided at a center of the arc-extinguishing rotating disk for driving the arc-extinguishing rotating disk to rotate; the conductive metal plate is mounted at an upper portion of the arc-extinguishing rotating disk; several arc-extinguishing air-jet members are provided around a circumferential direction of the arc-extinguishing rotating disk, each of the arc-extinguishing air-jet members is provided with a trigger electrode and a recess on one side thereof, and the trigger electrode has one end connected to one of triggering ends of the arc-extinguishing air-jet member by means of a wire, and the other end extending beyond an edge of the arc-extinguishing rotating disk; the other triggering end of the arc-extinguishing air-jet member is connected to a metallic conductive strip by means of a wire. The present disclosure has the advantages of simple structure, reasonable design, improved arc-extinguishing performance, and stable operation, and convenience in replacement of the arc-extinguishing air-jet members.

Claims

1. A lightning induction-type solid-phase arc-extinguishing lightning protector, which is fixedly mounted on a crossarm or at one end of an insulator string [(1)] by means of a link fitting, wherein the lightning induction-type solid-phase arc-extinguishing lightning protector [(2)] primarily comprises a lightning protector housing, an arc-extinguishing rotating disk, a conductive metal plate, a planar torsion spring, an arc-striking rod, a fastening rod, an inductive coil, an arc-extinguishing cylinder, a counter arm, an upper cover and a rotating shaft; an air-jet member triggering position is provided at the bottom of the lightning protector housing and the arc-extinguishing cylinder is mounted below the air-jet member triggering position; the fastening rod is fixedly mounted at the edge of the air-jet member triggering position; the arc-striking rod has one end connected to the link fitting and the other end extending through the inductive coil to the arc-extinguishing cylinder; one end of wire of the inductive coil is connected to the fastening rod, the other end thereof is in sliding contact with the conductive metal plate; the arc-striking rod passes through the inductive coil, when flashover just occurs in an air gap, since the change rate of current passing through the arc-striking rod as a starting point of arc is the largest, an induced voltage of the inductive coil is the largest and a secondary current generated is the largest, which is enough to trigger arc-extinguishing air-jet members, so that simultaneity of the starting point of the arc, a starting point of the secondary current and a starting point of airflow arc extinguishing is achieved, the arc-extinguishing effect for restricting strength by speediness is realized, and the arc can be immediately extinguished the arc at a moment when the arc is ignited; the counter arm is provided below the lightning protector housing and fixed to an axis position of the arc-extinguishing rotating disk; the arc-extinguishing rotating disk is mounted within the lightning protector housing, a center position of an upper portion of the arc-extinguishing rotating disk is connected to the upper cover of the lightning protector housing via the rotating shaft, the arc-extinguishing rotating disk can rotate around the rotating shaft, and the planar torsion spring for rotating the arc-extinguishing rotating disk is provided at a central position of the arc-extinguishing rotating disk, a lower portion of the arc-extinguishing rotating disk is substantially in contact with a protruding gasket provided at the arc-extinguishing cylinder within the lightning protector housing, and has a gap with a non-protruding portion within the lightning protector housing; the conductive metal plate is mounted at the upper portion of the arc-extinguishing rotating disk; several arc-extinguishing air-jet members are provided around a circumferential direction of the arc-extinguishing rotating disk, each of the arc-extinguishing air-jet members is provided with an L-shaped trigger electrode and a recess on one side thereof, and the L-shaped trigger electrode has one end connected to one of triggering ends of the arc-extinguishing air-jet member by means of a wire, and a rear portion of the L-shaped trigger electrode extends beyond an edge of the arc-extinguishing rotating disk; the other triggering end of the arc-extinguishing air-jet member is connected to the conductive metal plate via a wire.

2. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein in the lightning induction-type solid-phase arc-extinguishing lightning protector, a unique fastening and unfastening mode is adopted, that is, when the arc-extinguishing air-jet member is in the air-jet member triggering position, the rear portion of the L-shaped trigger electrode is fastened by the fastening rod until the arc-extinguishing air-jet member is triggered, the arc-extinguishing air-jet member generates strong airflow after being triggered, so that the L-shaped trigger electrode at the recess is bent along the recess, the rear portion of the L-shaped trigger electrode is retracted into the arc-extinguishing rotating disk so as to be unfastened successfully such that the arc-extinguishing rotating disk can be rotated through the planar torsion spring until the next arc-extinguishing air-jet member enters the air-jet member triggering position, and the L-shaped trigger electrode matched with the arc-extinguishing rotating disk is again fastened by the fastening rod.

3. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the bottom and/or side of the lightning protector housing is provided with a numeral mark or a mark of different colors.

4. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the recess is a semi-circular recess.

5. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the fastening rod and the arc-striking rod are iron metal rods or copper metal rods.

6. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the arc-extinguishing cylinder has a three-segment structure, that is, three segments of the arc-extinguishing cylinder are connected by a thread connection.

7. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the lightning protector housing and the upper cover are connected by a shaft, and the arc-extinguishing rotating disk is replaced by flipping the upper cover; or the lightning protector housing is assembled by two or more parts, each part is also connected by a shaft, and the arc-extinguishing rotating disk is replaced by rotating one part or several parts.

8. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the lightning induction-type solid-phase arc-extinguishing lightning protector has three cooperation modes with a lower electrode: a. the lightning induction-type solid-phase arc-extinguishing lightning protector is mounted at the upper end of the insulator string, and a pure arc-striking electrode is mounted at an lower end of the insulator string; b. the lightning induction-type solid-phase arc-extinguishing lightning protector is mounted at the upper end of the insulator string, and an overhead transmission line constraint-space injecting-gas arc-extinguishing lightning-protection gap device disclosed in Patent No. 201110090288.2 is installed at the lower end of the insulator string; c. the lightning induction-type solid-phase arc-extinguishing lightning protectors are respectively mounted on both the upper end and lower end of the insulator string.

9. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein cooperation mode c is used for transmission lines with a voltage level higher than 220 kV, the lightning induction-type solid-phase arc-extinguishing lightning protectors are respectively mounted at both the upper end and lower end of the insulator string.

10. The lightning induction-type solid-phase arc-extinguishing lightning protector of claim 1, wherein the planar torsion spring is mounted inside the arc-extinguishing rotating disk and fixed to the upper cover by the rotating shaft, and one to n planar torsion springs are mounted as needed, and when sufficient power is supplied, the more springs used, the smaller the force provided by each spring, and the smaller the deformation and more stable it is.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is an assembling diagram of an embodiment of the present disclosure.

[0030] FIG. 2 is a structural diagram of an embodiment of the present disclosure.

[0031] FIG. 3 is a structural diagram of the arrangement of the arc-extinguishing air-jet members of the arc-extinguishing rotating disk according to an embodiment of the present disclosure.

[0032] FIG. 4 is a schematic diagram of the current path of the lightning induction-type solid-phase arc-extinguishing lightning protector according to the present disclosure.

[0033] Reference numbers: 1insulator string, 2lightning inductiontype solid-phase arc-extinguishing lightning protector, 3high voltage electrode, 201lightning protector housing, 202arc-extinguishing rotating disk, 203conductive metal plate, 204planar torsion spring, 205arc-extinguishing air-jet member, 206L-shaped trigger electrode, 210arc-extinguishing cylinder, 211protruding gasket, 212counter arm, 213recess, 214rotating shaft, 215upper cover.

DETAILED DESCRIPTION

[0034] The present disclosure will be further described hereinafter with reference to the drawings and embodiments.

Embodiment 1

[0035] As shown in FIGS. 1-4, a lightning induction-type solid-phase arc-extinguishing lightning protector is fixedly mounted at one end of an insulator string by means of a link fitting. The lightning induction-type solid-phase arc-extinguishing lightning protector primarily includes a lightning protector housing 201, an arc-extinguishing rotating disk 202, a conductive metal plate 203, a planar torsion spring 204, an arc-striking rod 207, a fastening rod 208, an inductive coil 209, an arc-extinguishing cylinder 210, a counter arm 212, an upper cover 215 and a rotating shaft 214. An air-jet member triggering position is provided at the bottom of the lightning protector housing 201 and the arc-extinguishing cylinder 210 is mounted below the air-jet member triggering position; the fastening rod 208 is fixedly mounted at the edge of the air-jet member triggering position; the arc-striking rod 207 has one end connected to the link fitting and the other end extending through the inductive coil 209 to the arc-extinguishing cylinder 210; one end of wire of the inductive coil 209 is connected to the fastening rod 208, the other end thereof is in sliding contact with the conductive metal plate 203; the arc-striking rod 207 passes through the inductive coil 209, when flashover just occurs in an air gap, since the change rate of the current passing through the arc-striking rod 207 at the starting point of the arc is the largest, the induced voltage of the inductive coil 209 is the largest and the secondary current generated is the largest, which is enough to trigger arc-extinguishing air-jet members, so that the simultaneity of the starting point of the arc, the starting point of the secondary current and the starting point of airflow arc extinguishing is achieved, the arc-extinguishing effect restricting strength by speediness is realized, and the arc can be immediately extinguished at the moment when the arc is ignited; the counter arm 212 is provided below the lightning protector housing 201 and fixed to an axis position of the arc-extinguishing rotating disk 202; the arc-extinguishing rotating disk 202 is mounted within the lightning protector housing 201, a center position of an upper portion of the arc-extinguishing rotating disk 202 is connected to the upper cover 215 of the lightning protector housing 215 via the rotating shaft 214, the arc-extinguishing rotating disk 202 can rotate around the rotating shaft 214, and the planar torsion spring 204 for rotating the arc-extinguishing rotating disk 202 is provided at a central position of the arc-extinguishing rotating disk 202, a lower portion of the arc-extinguishing rotating disk 202 is substantially in contact with a protruding gasket 211 provided at the arc-extinguishing cylinder within the lightning protector housing 201, and has a gap with a non-protruding portion within the lightning protector housing 201;the conductive metal plate 203 is mounted at the upper portion of the arc-extinguishing rotating disk 202; several arc-extinguishing air-jet members 205 are provided around a circumferential direction of the arc-extinguishing rotating disk 202, each of the arc-extinguishing air-jet members 205 is provided with an L-shaped trigger electrode 206 and a recess 213 on one side thereof, and the L-shaped trigger electrode 206 has one end connected to one of triggering ends of the arc-extinguishing air-jet member 205 by means of a wire, and a rear portion of the L-shaped trigger electrode extends beyond an edge of the arc-extinguishing rotating disk 202; the other triggering end of the arc-extinguishing air-jet member 205 is connected to the conductive metal plate 203 via a wire.

[0036] In the lightning induction-type solid-phase arc-extinguishing lightning protector, a unique fastening and unfastening mode is adopted, that is, when the arc-extinguishing air-jet member 205 is in the air-jet member triggering position, the rear portion of the L-shaped trigger electrode 206 is fastened by the fastening rod 208 until the arc-extinguishing air-jet member 205 is triggered, the arc-extinguishing air-jet member 205 generates strong airflow after being triggered, so that the L-shaped trigger electrode 206 at the recess 213 is bent along the recess 213, the rear portion of the L-shaped trigger electrode 206 is retracted into the arc-extinguishing rotating disk 202 so as to be unfastened successfully such that the arc-extinguishing rotating disk 202 can be rotated through the planar torsion spring 204 until the next arc-extinguishing air-jet member 205 enters the air-jet member triggering position, and the L-shaped trigger electrode 206 matched with the arc-extinguishing rotating disk 202 is again fastened by the fastening rod 208.

[0037] The bottom of the lightning protector housing 201 is provided with a numeral mark or a mark of different colors. The recess 213 is a semi-circular recess. The fastening rod 208 and the arc-striking rod 207 are both copper metal rods. The lightning protector housing 201 and the upper cover 215 are connected by a shaft, and the arc-extinguishing rotating disk 202 is replaced by flipping the upper cover 215.

[0038] In the installation of this embodiment, the opening of the arc-extinguishing cylinder 210 is directed to the high voltage electrode 3 mounted on the transmission line below.

Embodiment 2

[0039] The present embodiment is similar to embodiment 1 except that the bottom and side of the lightning protector housing 201 are provided with numeral marks.

Embodiment 3

[0040] The present embodiment is similar to embodiment 1 except that the side of the lightning protector housing 201 is provided with colored marks. The arc-extinguishing cylinder 210 adopts a three-segment structure, that is, three segments of the arc-extinguishing cylinder are connected by a thread connection.