CN103269014A - Electric power line arrester - Google Patents

Abstract

An electric power line arrester comprises an insulated wire, an insulator body and an arrester body. The upper end of the insulator body is connected with the insulated wire through a first QTCFH, the lower end of the insulator body is connected with a rail, the insulator body is supported by the rail, and a bearing plate which extends outside is further arranged at the lower end of the insulator body. The arrester body is fixedly installed at the outer end of the bearing plate. A spherical discharge electrode is installed at the top end of the arrester body. A spherical electricity conducting electrode is fixedly connected to the insulated wire through a second QTCFH. The electricity conducting electrode is located above the discharge electrode and deviates from the central axis of the arrester body. The electric power line arrester is small in size, light in weight, and convenient to install, and can bring convenience for daily overhauling, demounting, mounting or replacement. The arrester and an insulator are combined into a whole, cost of the line is reduced, installing steps are simplified, and installing efficiency is improved.

Description

Lightning arrester for power line

technical field

The invention relates to a power system, in particular to a power line lightning arrester.

Background technique

Surge arresters have been widely used in power transmission and transformation systems. It protects power equipment from instantaneous overvoltage hazards by releasing lightning or power system operating overvoltage energy, and can cut off freewheeling electrical devices that will not cause system grounding short circuits. The arrester is usually connected between the live wire and the ground, and is connected in parallel with the protected equipment. Under the normal working voltage of the system, the arrester is in a high-resistance state, only microampere-level current passes through, and it is in an open circuit state relative to the ground; when the overvoltage value reaches the specified operating voltage, the arrester acts immediately and presents a low resistance , lead the high-voltage impact to the ground, thereby limiting the overvoltage amplitude and protecting the insulation of the equipment. After the voltage value is normal, the arrester quickly returns to its original state to ensure the normal power supply of the system.

Contents of the invention

Aiming at the defects in the prior art, the purpose of the present invention is to propose a power line lightning arrester.

Technical scheme of the present invention is:

A lightning arrester for power lines, comprising an insulated wire, an insulator body and a lightning arrester body, characterized in that the upper end of the insulator body is connected to the insulated wire through a first arc-proof puncture clamp, the lower end of the insulator body is connected to the crosspiece and The insulator body is supported by crosspieces, and the lower end of the insulator body is also provided with a receiving plate extending outward. The outer end of the receiving plate is fixed with the arrester body, and the top of the arrester body is installed with a spherical discharge electrode. The lead electrode is fixedly connected to the insulated wire through the second arc-proof puncture clamp, the lead electrode is located above the discharge electrode, and the lead electrode deviates from the central axis of the arrester body.

The preferred technical solution is that the second arc-proof puncture clamp includes a clamp seat, a puncture pressing block, and a fastening nut, and the insulated wire passes through the space formed between the clamp seat and the puncture pressing block, and the clamp seat It is fixed with the puncture pressing block by fastening nuts, an insulating arc striking rod is arranged under the clamp seat, and a leading electrode is arranged at the end of the insulating arc striking rod.

The preferred technical solution is that the first arc-proof puncture clamp includes a clamp seat, a puncture pressing block, and a fastening nut, and the insulated wire passes through the space formed between the clamp seat and the puncture pressing block, and the clamp seat It is fixed with the puncture pressing block by a fastening nut, and the lower part of the clamp seat is fixedly connected with the insulator body.

The preferred technical solution is that the distance between the center of the lead electrode and the center of the discharge electrode is 100mm-150mm.

The preferred technical solution is that the receiving plate is a folded plate made of aluminum alloy, one end of the receiving plate is sleeved on the lower end of the insulator body, the middle part of the receiving plate is bent and extended downward, and the arrester body is vertically installed on the outer end of the receiving plate . Further, the insulator body is arranged perpendicular to the insulated wire, and the inclination angle between the central axis of the arrester body and the central axis of the insulator body is 15°-30°.

A preferred technical solution is that the insulated arc starting rod is arranged obliquely relative to the insulated wire. Further, the inclination angle between the insulated arc starting rod and the insulated wire is 30°-45°.

The beneficial technical effect of the present invention is:

The present invention is small in size, light in weight, easy to install, and convenient for daily maintenance, disassembly or replacement. The invention integrates the lightning arrester and the insulator, reduces the line cost, simplifies the installation steps, and improves the installation efficiency; through a large number of lightning tests, the insulation coordination is carried out, and the gap value is determined, which can ensure that the lightning discharge occurs between the air gaps No adjustments are required during installation.

Description of drawings

Fig. 1 is a schematic structural diagram of a power line arrester according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the second arc-proof piercing clip of the present invention.

The realization of the purpose, function and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

A lightning arrester for power lines, comprising an insulated wire 1, an insulator body 2 and a lightning arrester body 3, the upper end of the insulator body 2 is connected to the insulated wire 1 through a first arc-proof puncture clamp 4, the lower end of the insulator body 2 is connected to the horizontal The frame 5 is connected and the insulator body 2 is supported by the crosspiece 5. The lower end of the insulator body 2 is also provided with a receiving plate 6 extending outward. A spherical discharge electrode 7 is installed on the top of the top, and a spherical lead electrode 8 is fixedly connected to the insulated wire 1 through the second arc-proof puncture clamp 9. The lead electrode 8 is located above the discharge electrode 7. The electric electrode 8 deviates from the central axis of the arrester body 3 .

The feature of the present invention is that the second arc-proof puncture clamp 9 includes a clamp seat 901, a puncture pressing block 902, and a fastening nut 903, and the insulated wire 1 is formed between the line clamp seat 901 and the puncture pressing block 902. The space passes through and the clamp seat 901 and the puncture pressing block 902 are fixed by a fastening nut 903. An insulating arc striking rod 904 is provided under the clamp seat 901, and an arc striking rod 904 is provided at the end of the insulating arc striking rod 904. Electrode 8.

The feature of the present invention is that the first arc-proof piercing clamp 4 includes a clamp seat, a piercing pressure block, and a fastening nut, and the insulated wire passes through the space formed between the wire clamp seat and the piercing pressure block, and the wire The clamp seat and the puncture pressing block are fixed by fastening nuts, and the bottom of the clamp seat is fixedly connected with the insulator body.

The feature of the present invention is that the distance between the center of the lead electrode 8 and the center of the discharge electrode 7 is 100mm-150mm.

The feature of the present invention is that the receiving plate 6 is a folded plate made of aluminum alloy, one end of the receiving plate 6 is sleeved on the lower end of the insulator body 2, the middle part of the receiving plate 6 is bent and extended downward, and the arrester body 3 is vertically installed on the On the outer end of receiving plate 6. Further, the insulator body 2 is arranged vertically relative to the insulated wire 1, and the inclination angle between the central axis of the arrester body 3 and the central axis of the insulator body 2 is 15°-30°.

The feature of the present invention is that the insulated arc starting rod 904 is arranged obliquely relative to the insulated wire 1 . Further, the inclination angle between the insulated arc starting rod 904 and the insulated wire 1 is 30°-45°.

Figure 1 is a schematic structural view of a power line arrester according to an embodiment of the present invention. As shown in Figure 1, a power line arrester includes an insulated wire 1, an insulator body 2 and an arrester body 3, and the upper end of the insulator body 2 passes through a first arc-proof The piercing clamp 4 is connected to the insulated wire 1, the lower end of the insulator body 2 is connected to the crosspiece 5 and the insulator body 2 is supported by the crosspiece 5, and the lower end of the insulator body 2 is also provided with a receiving plate 6 extending outward A lightning arrester body 3 is fixedly installed on the outer end of the receiving plate 6, a spherical discharge electrode 7 is installed on the top of the lightning arrester body 3, and a spherical lead electrode 8 is fixedly connected to the insulating On the wire 1 , the lead electrode 8 is located above the discharge electrode 7 , and the lead electrode 8 deviates from the central axis of the arrester body 3 .

Referring to FIG. 2 , the second arc-proof puncture clamp 9 includes a clamp seat 901 , a puncture pressing block 902 , and a fastening nut 903 . Pass through and fix between the wire clamp seat 901 and the puncture pressing block 902 by a fastening nut 903, an insulating arc striking rod 904 is provided under the wire clamp seat 901, and a lead electrode is provided at the end of the insulating arc striking rod 904 8.

Similarly, the first arc-proof piercing clamp 4 of the present invention includes a clamp seat, a piercing pressure block, and a fastening nut, and the insulated wire passes through the space formed between the wire clamp seat and the piercing pressure block, and the wire The clamp seat and the puncture pressing block are fixed by fastening nuts, and the bottom of the clamp seat is fixedly connected with the insulator body.

The distance between the center of the lead electrode 8 and the center of the discharge electrode 7 is 100mm-150mm. The receiving plate 6 is a folded plate made of aluminum alloy, one end of the receiving plate 6 is sleeved on the lower end of the insulator body 2, the middle part of the receiving plate 6 is bent and extended downward, and the arrester body 3 is vertically installed on the outer end of the receiving plate 6 superior. Further, the insulator body 2 is arranged vertically relative to the insulated wire 1, and the inclination angle between the central axis of the arrester body 3 and the central axis of the insulator body 2 is 15°-30°. The insulated arc starting rod 904 is arranged obliquely relative to the insulated wire 1 . Further, the inclination angle between the insulated arc starting rod 904 and the insulated wire 1 is 30°-45°.

The above is only a preferred embodiment of the present invention, and does not therefore limit the patent scope of the present invention. All equivalent structural transformations made by the content of the present invention description, or directly or indirectly used in other related technical fields, are all included in the same way. Within the scope of patent protection of the present invention.

Claims (8)

1. A power line lightning arrester, comprising an insulated wire, an insulator body and a lightning arrester body, characterized in that the upper end of the insulator body is connected to the insulated wire by a first arc-proof puncture clamp, and the lower end of the insulator body is connected to the crosspiece connected and the insulator body is supported by crosspieces, the lower end of the insulator body is also provided with a receiving plate extending outward, the outer end of the receiving plate is fixedly installed with the arrester body, and the top of the arrester body is installed with a spherical discharge electrode. A spherical lead electrode is fixedly connected to the insulated wire through the second arc-proof puncture clamp, the lead electrode is located above the discharge electrode, and the lead electrode deviates from the central axis of the arrester body. 2. The lightning arrester for power lines according to claim 1, wherein the second arc-proof puncture clamp includes a clamp seat, a puncture pressure block, and a fastening nut, and the insulated wire is connected from the clamp seat and the puncture pressure The space formed between the blocks passes through and the clamp seat and the puncture pressing block are fixed by fastening nuts. An insulating arc strike rod is provided under the clamp seat, and a lead electrode is provided at the end of the insulated arc strike rod. . 3. The power line lightning arrester according to claim 2, characterized in that, the first arc-proof puncture clamp includes a clamp seat, a puncture pressure block, and a fastening nut, and the insulated wire is connected from the clamp seat and the puncture pressure The space formed between the blocks passes through and the clamp seat and the puncture pressing block are fixed by fastening nuts, and the lower part of the clamp seat is fixedly connected with the insulator body. 4. The lightning arrester for power lines according to claim 3, characterized in that the distance between the center of the lead electrode and the center of the discharge electrode is 100mm-150mm. 5. The lightning arrester for power lines according to any one of claims 1 to 4, wherein the receiving plate is a folded plate made of aluminum alloy, one end of the receiving plate is socketed on the lower end of the insulator body, and the receiving plate The middle part of the arrester is bent and extended downwards, and the arrester body is vertically installed on the outer end of the receiving plate. 6. The lightning arrester for power lines according to claim 5, wherein the insulator body is arranged vertically relative to the insulated wire, and the inclination angle between the central axis of the arrester body and the central axis of the insulator body is 15 degrees -30 degrees. 7. The lightning arrester for power lines according to claim 6, wherein the insulated arc striker is arranged obliquely relative to the insulated wire. 8 . The lightning arrester for power lines according to claim 7 , wherein the inclination angle between the insulated arc striker and the insulated wire is 30°-45°.

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