CN201413807Y - Over-voltage disconnecting protector - Google Patents
Over-voltage disconnecting protector Download PDFInfo
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- CN201413807Y CN201413807Y CN2009200072019U CN200920007201U CN201413807Y CN 201413807 Y CN201413807 Y CN 201413807Y CN 2009200072019 U CN2009200072019 U CN 2009200072019U CN 200920007201 U CN200920007201 U CN 200920007201U CN 201413807 Y CN201413807 Y CN 201413807Y
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- lightning arrester
- protector
- breaks away
- disconnector
- arrester
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Abstract
The utility model relates to an electric power equipment, in particular to an over-voltage disconnecting protector suitable for being assembled with an electric power line, which comprises an arresterand a disconnector which is arranged at the lower end of the arrester, and is characterized in that the upper part of the arrester (1) is connected with a rod-shaped conductor current leading rod (8)extending upwards, and an air gap (17) is formed between the assembled line (15) and the current leading body (8). Since a certain air gas is kept between the current leading body and the line, the arrestor does not bear voltage so as to delay the aging of the device, and in the event of over-voltage, the air gap is broken down, so that the ground wire releases power frequency current to protectthe line; since the arrestor is of a solid structure, the arrester can not be burst and damaged, and the disconnector is adopted, the arrester can be automatically disconnected when being damaged to ensure the safe operation of the line; and a luminous body is arranged below the disconnector to facilitate the maintenance at night, and thereby, the work performance of the arrester can be fully improved, and the incidence of line failure and the maintenance workload can be substantially reduced.
Description
Technical field
The utility model relates to a kind of power equipment, and promptly a kind of overvoltage that is suitable for the power circuit equipment breaks away from protector.
Background technology
In order to prevent that power circuit is struck by lightning or superpotential destruction such as native system superpressure, need to be equipped with lightning arrester on the line.The kind of lightning arrester is a lot, but is the housing by an insulation mostly, resistive element inside, and its upper end picks out lead and is in parallel the lower end earth connection with the high pressure phase line of being protected.At ordinary times, because the obstruct of resistive element, lightning arrester is equivalent to an insulator, and the electric current of circuit can not revealed by ground wire.When meeting with overvoltage, the resistive element of lightning arrester is open-minded, and a large amount of electric currents release from ground wire, and circuit is protected.After overvoltage disappeared, lightning arrester also restored to the original state, and guaranteed the circuit operate as normal., when overtension, lightning arrester also can breakdownly damage, and can not recover resistance at ordinary times, and circuit will form short circuit over the ground, can not recover normal operating conditions.In order to address this problem, people have developed disconnector, and disconnector is provided with the connector of easy fusing or thermal explosion, are contained between lightning arrester and the ground wire.When overtension, through behind the pressure leak process of moment, connector melts or pops, and disconnector and lightning arrester disconnect, even lightning arrester damages the normal operation that also can not influence circuit.
Conventional lightning arrester is though also there are some weakness in excellent performance.For example there is the high pressure phase line parallel of lead and power circuit the lightning arrester upper end, system voltage is born at its two ends for a long time, quickened the aging of lightning arrester, shortening in various degree useful life, especially be with series gap porcelain coat lightning arrester, not only anti-pollution characteristic is poor, and there is cavity in inside, heat dispersion is poor, be easy to generate implosion, so be not suitable for the frequent area of lightening activity, particularly stride Jiang Tieta, coastal area, the area that soil resistivity height and earth resistance are big, the heavy pollution district, winter attached ice serious area, the mountain area of line walking difficulty, the demanding places of power supply reliability etc., the scope of application is restricted.
Summary of the invention
The purpose of this utility model provides a kind of difficult aging, and non-explosive damage is safe and reliable, long service life, and wide accommodation, and overvoltage simple in structure, easy to maintenance breaks away from protector.
Above-mentioned purpose is realized by following technical scheme: develop a kind of overvoltage and break away from protector; be to constitute by lightning arrester, disconnector; disconnector is contained between lightning arrester and the ground wire, is characterized in: the top of said lightning arrester is connected to the rod-shaped conductors drainage bar that stretches upwards.
Said drainage bar is an elongated conducting rod, stretches out upward in the upper end of lightning arrester.
Said drainage bar is an elongated conducting rod, after the upper end of lightning arrester protrudes upward again to a lateral buckling.
Said drainage bar is an elongated conducting rod, stretches out to many sides after the upper end of lightning arrester protrudes upward again.
Be connected on below the said lightning arrester on the shaft-like carriage, the other end of carriage links to each other with fixed mount, insulation column is housed above the fixed mount, there is the dop of constraint power circuit the insulation column upper end, the height and position of dop is higher than the height of the drainage bar of lightning arrester top, even form the air gap between the high pressure phase line of power circuit and the drainage body.
Said fixed mount is the cross-arm on the electric post.
The bending segment and the line direction of said drainage body intersect.
The noctilucence body is housed on the said disconnector.
Said lightning arrester is to be made of the gapless structure of closely filling between its housing and the resistive element insulation shell and inner resistive element.
The insulation shell outside of said lightning arrester has water-repellent layer.
The beneficial effects of the utility model are: owing to replaced the lead in parallel with circuit with the drainage body, keep certain air gap between lightning arrester and the circuit, so lightning arrester does not bear voltage at ordinary times, can delay device aging.When overvoltage took place, the air gap was switched on the back lightning arrester and starts working, and ground wire pressure release and protection circuit restores to the original state later immediately can not form shorted to earth.Because the air gap outside lightning arrester, is a solid construction in the lightning arrester, volume is little, and is in light weight, and good airproof performance is moistureproof, antifouling, explosion-proof.Adopt disconnector in addition, meet too high voltages meeting automatic disconnection by chance, guarantee the safety of circuit.Assembling noctilucence body is convenient to safeguard night.Thereby improved the service behaviour of the anti-overvoltage facility of power circuit comprehensively, reduced rate of occurrence of equipment failure and maintenance workload significantly, had great importance for the fail safe and the reliability that guarantee power circuit.
Description of drawings
Fig. 1 is the front view of first kind of embodiment;
Fig. 2 is the vertical view of first kind of embodiment;
Fig. 3 is the parts assembling schematic diagram of first kind of embodiment;
Fig. 4 is the structure principle chart of the parts disconnector of first kind of embodiment;
Fig. 5 is the structure principle chart of the parts disconnector of first kind of embodiment;
Fig. 6 is the structure principle chart of the parts disconnector of first kind of embodiment;
Fig. 7 is the working state figure of first kind of embodiment;
Fig. 8 is the working state figure of first kind of embodiment;
Fig. 9 is the front view of second kind of embodiment;
Figure 10 is the vertical view of second kind of embodiment;
Figure 11 is the front view of the third embodiment;
Figure 12 is the vertical view of the third embodiment;
Figure 13 is the vertical view of the 4th kind of embodiment.
Among the figure as seen: lightning arrester 1, lower nut 2, disconnector 3, noctilucence body 4, soft line 5, brace 6, top nut 7, drainage body 8, housing 9, resistive element 10, ground wire 11, carriage 12, fixed mount 13, insulation column 14, high pressure phase line 15, dop 16, air gap 17, water-repellent layer 18.
Embodiment
First kind of embodiment: as shown in Figure 1, 2, 3, constituted lightning arrester 1 by the insulation shell 9 of tubulose and the resistive element 10 of the inside, a drainage body 8 is equipped with by top nut 7 in the upper end.A disconnector 3 is equipped with by a lower nut 2 in the lower end.
As seen from the figure, said drainage body 8 can be made with conductor materials such as stainless steels, and one section setting section that stretches upwards is arranged below, and setting section upper end is put down to a lateral buckling and stretched, and integral body is " 7 " font.
Said lightning arrester 1 should belong to the part of lightning arrester strictly speaking, in order to narrate conveniently, is called lightning arrester.The version of lightning arrester 1 is varied, and Fig. 3 just exemplifies a kind of brief configuration that is made of the resistive element 10 of insulation shell 9 and the inside, can not exhaustive lightning arrester structure of the present utility model.As seen from the figure, the insulation shell 9 of lightning arrester 1 and inner resistive element 10 are the solid member of closely filling, on agent structure, adopt large distance, big capacity, composite sheath zinc oxide arrester that residual voltage is low, have that volume is little, in light weight, good airproof performance, protection against the tide, an advantage such as antifouling, explosion-proof.Housing 9 adopts hydrophobic material or applies hydrophobic material and forms water-repellent layer 18 in addition, is difficult for polluting, and resistant is dirty, can adapt to the requirement of cesspool.
Fig. 4,5,6 has introduced the structural principle of three kinds of separators 4 respectively.Fig. 4 is a kind of heat explosion type disconnector, as seen has capacitor C in parallel with the discharging gap K and the thermal explosion pipe B of disconnection, when electric capacity two ends electric charge accumulation is transfinited, and discharging gap K conducting and ignite thermal explosion pipe B, thus make whole the disconnection, realize separating.Fig. 5 introduction be to connect with thermal explosion pipe B again after having adopted resistance R and discharging gap K parallel connection, heat transfinites and ignites and break away from when the voltage superelevation.Fig. 5 introduction be a kind of hot melten type disconnector, meltable solder joint Q is arranged below metal oxide, solder joint fusing when heat reaches set point, preloading spring flicks and separates.
On one section screw rod below the separator 3, a pair of chucking nut and noctilucence body 4 are housed.The effect of chucking nut is the soft line 5 that is installed, and the other end of soft line 5 is provided with brace 6, can link to each other with ground wire 11.The purposes of noctilucence body 4 is to be convenient to night observation safeguard.
Fig. 7,8 has represented the mounting means of this lightning arrester 1.As shown in the figure, lightning arrester 1 and soft line 5 all are connected on the shaft-like carriage 12, the other end of carriage 12 links to each other with fixed mount 13, insulation column 14 is housed above the fixed mount 13, there is the dop 16 of constraint power circuit high pressure phase line 15 insulation column 14 upper ends, the height and position of dop 16 is higher than the height of the drainage bar 8 of lightning arrester 1 top, even form air gap 17 between circuit 15 and the drainage body 8.The fixed mount 13 here can be the cross-arm on the electric post.Insulation column 14 can be the insulator of electric post.Bending segment and line direction above the drainage body 8 intersect.
The top of lightning arrester 1 assembling drainage body 8 keeps a gap between drainage body 8 and the circuit high pressure phase line 15, promptly said air gap 17, thus alternative original product and high pressure phase line 15 lead in parallel is a key technology of the present utility model.Its operation principle is: lightning arrester 1 does not bear voltage because of air gap 17 and circuit high pressure phase line 15 disconnect at ordinary times, can delay the ageing process of device, life-saving.When overvoltage that thunderbolt or internal system produce, air gap 17 is breakdown, lightning arrester 1 conducting, by ground wire 11 to the earth earial drainage, protection circuit.Restore to the original state then, circuit is work as usual.When especially big thunder and lightning or other superelevation overvoltage took place, particularly breakdown and can not recover the time at lightning arrester 1, disconnector 3 is thermal explosion and breaking away from as shown in Figure 8, and power circuit shorted to earth can not take place.In fact, as long as design parameter is reasonable, disconnector 3 can be set within high pressure phase line 15 safe rangies fully and lightning arrester 1 tenability limit breaks away from before, has both protected circuit, can not damage lightning arrester 1 again.Disconnector 3 after the disengaging is suspended in the air because of the contact of soft line 5, and because of there being noctilucence body 4 luminous, even at night, the attendant also can be very easy to find, and can in time change lightning arrester 1.Because especially big thunder and lightning probability of happening is minimum, the probability that recurs on same point is littler, that density is set is bigger for lightning arrester on the circuit 1 in addition, thereby after a little lightning arrester 1 is by especially big overvoltage damage, even can not repair immediately, the security performance of circuit can not be subjected to too much influence yet, so the maintenance interval time of this lightning arrester prolongs relatively, is particularly suitable for overhauling the place use of difficulty.
The form of the drainage body 8 here can have many kinds, so long as one is fixed on above the lightning arrester 1 and with the top phase line of protecting and keeps the conductor of certain interval all should belong to the scope that is equal to.For the purpose of clear and definite, exemplify following three kinds of embodiment again.
Second kind of embodiment: shown in Fig. 9,10, the drainage body 8 above this lightning arrester 1 has only the setting section of stretching on a section, and not bending.Its advantage is simple in structure, and shortcoming is to have relatively high expectations with the relative positional accuracy of circuit 15, and the drainage scope is less, but also can work.
The third embodiment: shown in Figure 11,12, the drainage body 8 above the lightning arrester 1 is erect above the section to be the cross bar of a horizontal, to stretch out to both sides that its drainage scope is bigger.
The 4th kind of embodiment: as shown in figure 13, it is the cross bar that two horizontal are intersected that drainage body 8 is erect above the section, stretches out to the four sides, and its drainage scope is bigger.
Claims (9)
1. an overvoltage breaks away from protector; be to constitute by lightning arrester (1), disconnector (3); disconnector (3) is contained between lightning arrester (1) and the ground wire (11), it is characterized in that: the top of said lightning arrester (1) is connected to the rod-shaped conductors drainage bar (8) that stretches upwards.
2. overvoltage according to claim 1 breaks away from protector, and it is characterized in that: said drainage bar (8) is an elongated conducting rod, stretches out upward in the upper end of lightning arrester (1).
3. overvoltage according to claim 1 breaks away from protector, it is characterized in that: said drainage bar (8) after the upper end of lightning arrester (1) protrudes upward again to a side or many lateral bucklings.
4. overvoltage according to claim 1 breaks away from protector; it is characterized in that: be connected on below the said lightning arrester (1) on the shaft-like carriage (12); the other end of carriage (12) links to each other with fixed mount (13); insulation column (14) is housed above the fixed mount (13); there is the dop (16) of the high pressure phase line (15) of constraint power circuit insulation column (14) upper end; the position of dop (16) is higher than the height of the drainage bar (8) of lightning arrester (1) top, makes between high pressure phase line (15) and the drainage body (8) and forms air gap (17).
5. overvoltage according to claim 4 breaks away from protector, and it is characterized in that: said fixed mount (13) is the cross-arm on the electric post.
6. overvoltage according to claim 1 breaks away from protector, and it is characterized in that: the bending segment and the line direction of said drainage body (8) intersect.
7. overvoltage according to claim 1 breaks away from protector, it is characterized in that: noctilucence body (4) is housed on the said disconnector (3).
8. overvoltage according to claim 1 breaks away from protector, it is characterized in that: said lightning arrester (1) is to constitute the gapless structure of closely filling between its housing (9) and the resistive element (10) by insulation shell (9) and inner resistive element (10).
9. overvoltage according to claim 8 breaks away from protector, it is characterized in that: insulation shell (9) outside of said lightning arrester (1) is provided with water-repellent layer (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200072019U CN201413807Y (en) | 2009-01-13 | 2009-01-13 | Over-voltage disconnecting protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200072019U CN201413807Y (en) | 2009-01-13 | 2009-01-13 | Over-voltage disconnecting protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201413807Y true CN201413807Y (en) | 2010-02-24 |
Family
ID=41715688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200072019U Expired - Fee Related CN201413807Y (en) | 2009-01-13 | 2009-01-13 | Over-voltage disconnecting protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201413807Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091660A (en) * | 2014-06-12 | 2014-10-08 | 宜兴华源电工设备有限公司 | Lightning protection explosion-proof composite post type insulator with disengaging apparatus |
| CN104240877A (en) * | 2013-06-24 | 2014-12-24 | 成都旋极历通信息技术有限公司 | Novel high-efficient arc-extinguishing lightning arrester disconnector |
-
2009
- 2009-01-13 CN CN2009200072019U patent/CN201413807Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240877A (en) * | 2013-06-24 | 2014-12-24 | 成都旋极历通信息技术有限公司 | Novel high-efficient arc-extinguishing lightning arrester disconnector |
| CN104091660A (en) * | 2014-06-12 | 2014-10-08 | 宜兴华源电工设备有限公司 | Lightning protection explosion-proof composite post type insulator with disengaging apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20140113 |