CN204577835U - A kind of from cutting afterflow lightning arrester - Google Patents
A kind of from cutting afterflow lightning arrester Download PDFInfo
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- CN204577835U CN204577835U CN201520169561.4U CN201520169561U CN204577835U CN 204577835 U CN204577835 U CN 204577835U CN 201520169561 U CN201520169561 U CN 201520169561U CN 204577835 U CN204577835 U CN 204577835U
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- lightning
- insulating barrier
- main discharge
- lightning arrester
- discharge gap
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Abstract
The utility model discloses a kind of from cutting afterflow lightning arrester, utilizing the outer gum cover of traditional lightning protection device, insulating cylinder, upper and lower electrode to form an annular seal space, in this chamber built with the main discharge gap connected by wire and auxiliary discharging gap.In the middle of main discharge gap, there is the insulating barrier of a through hole across one piece; At two ends, auxiliary gap, in parallel one around the coil on bar magnet.When lightning wave arrives, high voltage enters from lightning arrester lead-in wire, and main discharge gap and auxiliary discharging gap are punctured simultaneously, and lightning current leaks into the earth.Because the frequency of power frequency continued flow is far below thunder and lightning equivalent frequency, so lightning current unpassable magnet exciting coil power frequency continued flow but have passed, and make bar magnet produce magnetic force insulating barrier of leaving behind to cut off electric arc between main discharge gap, power frequency continued flow oneself produces magnetic force and self is chopped off.Subsequently, under the effect of spring and limiting plate, revert to again the position before electric discharge exactly, for next thunder and lightning arrives ready.
Description
Technical field
The present invention relates generally to power domain, is specifically related to electric power system from cutting afterflow lightning arrester.
Background technology
Electric power system lightning arrester almost all adopts metal oxide valve block to be its center part in recent years, and it has excellent protective feature in the various thunder and lightning of restriction and switching overvoltage.But, the weight of metal oxide valve block account for whole lightning arrester majority, add the weight of lightning arrester, in addition, the price of metal oxide valve block is too high, brings certain financial burden to user; In addition, the heat balance out-of-control phenomenon that the heating of valve block under alternating current function has exceeded its heat-sinking capability and caused happens occasionally, and can cause potential safety hazard, moreover, now existing invention without valve block arrester, in order to cutoff high power frequency continued flow needs are by the actuating of secondary low-voltage equipment, troublesome poeration.
Summary of the invention
The present invention is directed to defect and the deficiency of prior art, propose one and can certainly cut afterflow lightning arrester, cancel whole metal oxide valve block in traditional lightning protection device.
The technical solution used in the present invention is as follows:
One can cut afterflow lightning arrester certainly, comprise the outer gum cover of lightning arrester, the outer gum cover inside of described thunder device is provided with insulating cylinder, described insulating cylinder inner upper and below are respectively equipped with top electrode and bottom electrode, the outer gum cover of described lightning arrester, insulating cylinder, top electrode, bottom electrode forms an annular seal space, it is characterized in that: in described annular seal space, be provided with upper conductor, middle wire and lower wire, described upper conductor, middle wire and lower wire are the wires of outsourcing insulation, to limit discharge path, described upper conductor is connected on top electrode, described lower wire connects on the bottom electrode, a main discharge gap is in series with between described upper conductor and middle wire, an auxiliary discharging gap is in series with between described middle wire and lower wire, described main discharge gap is made up of the electrode of two panels semi-spherical shape, makes main discharge gap electric field strength even, the outside of the electrode of described two panels semi-spherical shape is provided with a bowl formula magnetic cylinder and is covered, and is limited in by electrical discharge arc in setting range, also be provided with one piece of insulating barrier between the electrode of the two panels semi-spherical shape of described main discharge gap, described insulating barrier is provided with through hole, and described through hole is concentric with main discharge gap, described insulating barrier is by spring suspended on top electrode, and the upper edge of described insulating barrier is provided with limiting plate, and described limiting plate is fixed on insulation barrel, the upper line height of restriction insulating barrier, and below described insulating barrier, interlocking has an iron block, described bottom electrode is provided with insulating support, the fastening bar magnet in described insulating support upper end, and described bar magnet is positioned at the below of iron block, and described bar magnet is wound with magnet exciting coil, and the magnet exciting coil of described auxiliary discharging gap and winding bar magnet passes through conductor in parallel.
During utility model works, equally with common lightning arrester be parallel on high-voltage fence, in normal operation, the air in main discharge gap is in state of insulation, and the high voltage in system and ground are separated, and the power current in system can not leak into the earth.When lightning wave arrives, high voltage from lightning arrester lead-in wire enter, by top electrode, upper conductor, puncture main discharge gap, by middle wire, puncture auxiliary discharging gap, by lower wire and bottom electrode, lightning current leak into the earth.Because the equivalent frequency of lightning wave is very high, although magnet exciting coil in auxiliary discharging gap place parallel connection, magnet exciting coil can produce great induction reactance to lightning current, and it is for the approximate open circuit of lightning current, so thunder and lightning only punctures auxiliary discharging gap and enters ground.After thunder and lightning releases, the power current on electrical network continues to form path (being often referred to as power frequency continued flow) with the earth along the passage that thunder and lightning punctures.But, power frequency is now only 50HZ, induction reactance on magnet exciting coil and lightning current by time numerical value to reduce manyfold, add on auxiliary discharging gap and have certain arc resistance, so electric current now will pass through (or being diverted through) magnet exciting coil, bar magnet is made to produce magnetic attraction iron block, insulating barrier moves down, through hole and main discharge gap in plate is allowed to misplace, both insulating barrier cut off the electric path of main discharge gap, power frequency continued flow is cut off, have successfully completed and not only released lightning current but also cut off power frequency continued flow task, afterflow from cut moment each parts position as shown in Figure 2.After power frequency continued flow is also cut-off, magnet exciting coil dead electricity, bar magnet loss of excitation, insulating barrier under the contraction of spring, and under the restriction of limiting plate, the position before making insulating barrier return to electric discharge exactly, through hole in insulating barrier revert to again the position concentric with main discharge gap, be again dielectric with air in the middle of main discharge gap, not only but also got back to state as shown in Figure 1, all had all carried out the preparation of meeting head on thunder and lightning next time and arriving.
Beneficial effect of the present invention is:
1, owing to having used the greatly different difference of lightning wave equivalent frequency and power frequency dexterously, so chop power frequency continued flow off under the magneticaction that produces of power frequency continued flow self after lightning wave, manipulate without the need to any secondary device.
2, it is compared with valve-type arrester, due to eliminate interior whole metal oxide valve block it, so weight ratio valve block weight saving several times used, liquid eliminate lightning arrester internal thermal equilibrium out-of-control phenomenon occur, its cost reduces several times than valve block used; Valve block used has agine mechaism, and all elements in the present invention are aging all hardly.
Range of application of the present invention:
1, this lightning arrester is applicable to 35kV and following electric system of neutral-piont earth free;
2, the present invention there will be a section ripple at elimination thunderstorm hour, and it should not do electric motor protecting, is applicable to line thunder protection.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when electric power system normally runs.
Fig. 2 is the present invention cuts moment certainly structural representation in afterflow.
Fig. 3 is the structural representation of insulation board of the present invention.
Embodiment
One can cut afterflow lightning arrester certainly, comprise the outer gum cover of lightning arrester, the outer gum cover inside of described thunder device is provided with insulating cylinder, described insulating cylinder inner upper and below are respectively equipped with top electrode 11 and bottom electrode 16, the outer gum cover of described lightning arrester, insulating cylinder, top electrode 11, bottom electrode 16 forms an annular seal space, it is characterized in that: in described annular seal space, be provided with upper conductor 12, middle wire 7 and lower wire 2, described upper conductor 12, middle wire 7 and lower wire 2 are wires of outsourcing insulation, to limit discharge path, described upper conductor 12 is connected on top electrode 11, described lower wire 2 is connected on bottom electrode 16, a main discharge gap 1 is in series with between described upper conductor 12 and middle wire 7, an auxiliary discharging gap 4 is in series with between described middle wire 7 and lower wire 2, described main discharge gap 1 is made up of the electrode 13 of two panels semi-spherical shape, makes main discharge gap 1 electric field strength even, the outside of the electrode 13 of described two panels semi-spherical shape is provided with a bowl formula magnetic cylinder 8 and is covered, and is limited in by electrical discharge arc in setting range, also be provided with one piece of insulating barrier 6 between the electrode 13 of the two panels semi-spherical shape of described main discharge gap 1, described insulating barrier 6 is provided with through hole, and described through hole is concentric with main discharge gap 1, described insulating barrier 6 is suspended on top electrode 11 by spring 10, and described insulating barrier 6 is provided with limiting plate 9 along limit, and described limiting plate 9 is fixed on insulation barrel, the upper line height of restriction insulating barrier 6, and below described insulating barrier 6, interlocking has an iron block 5, described bottom electrode 16 is provided with insulating support 15, described insulating support 15 upper end is fastened with bar magnet 3, described bar magnet is positioned at the below of iron block 5, and described bar magnet 3 is wound with magnet exciting coil 14, and the bar magnet 3 of described auxiliary discharging gap 4 and winding magnet exciting coil 14 passes through conductor in parallel.
During utility model works, equally with common lightning arrester be parallel on high-voltage fence, in normal operation as shown in Figure 1, the air in main discharge gap 1 is in state of insulation, high voltage in system and ground are separated, and the power current in system can not leak into the earth.When lightning wave arrives, high voltage from lightning arrester lead-in wire enter, by top electrode 11, upper conductor 12, puncture main discharge gap 1, by middle wire 7, puncture auxiliary discharging gap 4, by lower wire 2 and bottom electrode 16, lightning current leak into the earth.Because the equivalent frequency of lightning wave is very high, although magnet exciting coil 14 in auxiliary discharging gap 4 place's parallel connection, magnet exciting coil 14 pairs of lightning currents can produce great induction reactance, and it is for the approximate open circuit of lightning current, so thunder and lightning only punctures auxiliary discharging gap 4 and enters ground.After thunder and lightning releases, the power current on electrical network continues to form path (being often referred to as power frequency continued flow) with the earth along the passage that thunder and lightning punctures.But, power frequency is now only 50HZ, induction reactance on magnet exciting coil 14 and lightning current by time numerical value to reduce manyfold, add on auxiliary discharging gap 4 and have certain arc resistance, so electric current now will pass through (or being diverted through) magnet exciting coil 14, bar magnet 3 is made to produce magnetic attraction iron block 5, insulating barrier 6 moves down, through hole and main discharge gap 1 in plate is allowed to misplace, both insulating barrier 6 cut off the electric path of main discharge gap 1, power frequency continued flow is cut off, have successfully completed and not only released lightning current but also cut off power frequency continued flow task, afterflow from cut moment each parts position as shown in Figure 2.After power frequency continued flow is also cut-off, magnet exciting coil 14 dead electricity, bar magnet 3 loss of excitation, insulating barrier 6 under the contraction of spring 10, and under the restriction of limiting plate 9, the position before making insulating barrier 6 return to electric discharge exactly, through hole in insulating barrier 6 revert to again the position concentric with main discharge gap 1, be again dielectric with air in the middle of main discharge gap 1, not only but also got back to state as shown in Figure 1, all had all carried out the preparation of meeting head on thunder and lightning next time and arriving.
Claims (4)
1. certainly cut afterflow lightning arrester for one kind, comprise the outer gum cover of lightning arrester, the outer gum cover inside of described thunder device is provided with insulating cylinder, described insulating cylinder inner upper and below are respectively equipped with top electrode and bottom electrode, the outer gum cover of described lightning arrester, insulating cylinder, top electrode, bottom electrode forms an annular seal space, it is characterized in that: in described annular seal space, be provided with upper conductor from top to bottom, middle wire and lower wire, described upper conductor is connected on top electrode, described lower wire connects on the bottom electrode, a main discharge gap is in series with between described upper conductor and middle wire, an auxiliary discharging gap is in series with between described middle wire and lower wire, described main discharge gap is made up of the electrode of two panels semi-spherical shape, and be also provided with one piece of insulating barrier between the electrode of the two panels semi-spherical shape of described main discharge gap, described insulating barrier is provided with through hole, and described through hole is concentric with main discharge gap, described insulating barrier is by spring suspended on top electrode, and the upper edge of described insulating barrier is provided with limiting plate, and below described insulating barrier, interlocking has an iron block, described bottom electrode is provided with insulating support, the fastening bar magnet in described insulating support upper end, and described bar magnet is positioned at the below of iron block, and described bar magnet is wound with magnet exciting coil, and the magnet exciting coil of described auxiliary discharging gap and winding bar magnet passes through conductor in parallel.
2. according to claim 1 from cutting afterflow lightning arrester, it is characterized in that: the outside of the electrode of described two panels semi-spherical shape is provided with a bowl formula magnetic cylinder and is covered, and electric discharge is limited in setting range.
3. according to claim 1 from cutting afterflow lightning arrester, it is characterized in that: described limiting plate is fixed on insulation barrel, the upper line height of restriction insulating barrier.
4. according to claim 1 from cutting afterflow lightning arrester, it is characterized in that: described upper conductor, middle wire and lower wire are the wires of outsourcing insulation, to limit discharge path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520169561.4U CN204577835U (en) | 2015-03-24 | 2015-03-24 | A kind of from cutting afterflow lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520169561.4U CN204577835U (en) | 2015-03-24 | 2015-03-24 | A kind of from cutting afterflow lightning arrester |
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| Publication Number | Publication Date |
|---|---|
| CN204577835U true CN204577835U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520169561.4U Withdrawn - After Issue CN204577835U (en) | 2015-03-24 | 2015-03-24 | A kind of from cutting afterflow lightning arrester |
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| CN (1) | CN204577835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716563A (en) * | 2015-03-24 | 2015-06-17 | 合肥南南电力保护设备有限公司 | Self-cutting follow current lightning arrester |
| CN111725703A (en) * | 2020-07-02 | 2020-09-29 | 广东电网有限责任公司 | Lightning arrester of distribution line |
-
2015
- 2015-03-24 CN CN201520169561.4U patent/CN204577835U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716563A (en) * | 2015-03-24 | 2015-06-17 | 合肥南南电力保护设备有限公司 | Self-cutting follow current lightning arrester |
| CN104716563B (en) * | 2015-03-24 | 2016-07-06 | 合肥南南电力保护设备有限公司 | A kind of from cutting afterflow spark gap |
| CN111725703A (en) * | 2020-07-02 | 2020-09-29 | 广东电网有限责任公司 | Lightning arrester of distribution line |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |