CN103715608A - 10kV outer string gap lightning arrester connection insulation lead discharging device - Google Patents
10kV outer string gap lightning arrester connection insulation lead discharging device Download PDFInfo
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- CN103715608A CN103715608A CN201310719604.7A CN201310719604A CN103715608A CN 103715608 A CN103715608 A CN 103715608A CN 201310719604 A CN201310719604 A CN 201310719604A CN 103715608 A CN103715608 A CN 103715608A
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Abstract
The invention relates to a 10kV outer string gap lightning arrester connection insulation lead discharging device and belongs to an anti-lightning-stroke lightning arrester safety discharging device in the high voltage transmission system. The 10kV outer string gap lightning arrester connection insulation lead discharging device comprises a discharging body and a ceramic insulation casing, wherein a pricker of the discharging body is made to face upwards, a mounting boss is arranged in an upper circular hole of the ceramic insulation casing, and the ceramic insulation casing is fastened at a lower portion of an insulation lead through a clamp. The pricker pierces an outer insulation layer of the insulation lead to contact with a core of the insulation lead, and an upper discharging ball is arranged in a lower circular hole of which a lower end is open. The discharging device has a simple structure, is convenient to mount, employs a ceramic sealing device to realize packaging of the pricker and the discharging ball, avoids rainwater from eroding the core of the lead and prolongs service life of the lead.
Description
Technical field
The present invention relates to a kind of 10kV surge arrester with external series gaps and connect insulated conductor electric discharge device, belong to the lightning arrester safe discharge device that high voltage power transmisson system prevents thunderbolt.
Background technology
The China of beginning the nineties starts to adopt insulated conductor power transmission in the transmission line of city.These technical measures can reduce the circuit corridor floor space of urban distribution network.Solve plain conductor due to the phase fault accident that the foreign matters such as branch cause simultaneously, improved power supply reliability.But easily there is lightning-caused breaking in insulated conductor, after broken string, easily results in personal injury caused by an accident.Therefore the insulated conductor that prevents from being struck by lightning breaks and becomes a key technology of insulated conductor power transmission.
From the nineties, numerous domestic scientific research institutions and enterprise have dropped into a large amount of human and material resources and have studied.A series of lightning protection components such as electric discharge wire clamp, clamper insulator, anti-lightning strike insulator have been released.But effect is all undesirable.After 2008, start to apply lightning arrester as the element of anti-insulated conductor breakage caused by lightning stroke.This element has been obtained good effect, and it can not only prevent lightning-caused breaking and greatly reduce tripping rate with lightning strike.
At present domesticly started to adopt in a large number surge arrester with external series gaps to do the lightning protection component of insulated conductor.Existing nearly 10 kinds of different products are put into system operation.The discharge electrode of surge arrester with external series gaps and insulated conductor form air gap.When transmission line of lightning strike, produce lightning overvoltage.First air gap punctures.Now lightning arrester starts conducting, discharges lightning overvoltage energy.Due to the nonlinear effect of lightning arrester volt-ampere curve, limited the voltage magnitude at lightning arrester two ends.This amplitude, well below the flashover voltage of insulator in parallel, has protected insulator that flashover does not occur, and while lightning current flows through rear lightning arrester and returns to very soon high-impedance state, blocks power frequency continued flow.Can there is not lightning stroke flashover tripping operation and wire fusing.
The lightning arrester discharge utmost point has multiple pattern.There are the ring discharge utmost point, the globular discharge utmost point, clavate discharge electrode, dihedral discharge electrode etc.These discharge electrodes all form air gap with insulated conductor.Insulated conductor is as another electrode in atmospherical discharges gap.With wire, do discharge electrode and have following several problem: 1. in system, the wire diameter of wire used is different, impulse sparkover voltage discharge voltage values different, lightning arrester are inconsistent.Exist discharge voltage inaccurate, be difficult to determine clearance distance.2. owing to being insulated conductor, during electric discharge, first wire insulation punctures, then forms air gap with the discharge electrode of lightning arrester.Weak spot when insulated conductor is manufactured is indefinite, and insulating barrier breakdown point is unfixing, and the clearance distance of formation is uncertain.Discharge voltage is inaccurate.In order to overcome this problem, now the product of operation takes following two kinds of methods to solve: the first, on insulated conductor, manufacture artificially a point of discharge, on the wire above the lightning arrester discharge utmost point, open the square hole of one 20 х 10mm, the metal position of insulated conductor is exposed.The second, adopt high voltage piercing electrode.With high pressure penetrating cable clamp and wire, be connected, with insulating cover, penetrating cable clamp cover sealed.Arc guide rod is externally exposed.These two kinds of methods exist following several problem: the first, and the insulating barrier that has destroyed insulated conductor makes wire blow-by.The snow-broth of rainwater in service and thawing can be invaded wire internal layer through cavity, make metallic conductor corrosion.The second, there is electrified body externally exposed, lost the basic intention of application insulated conductor.The 3rd, when perforate and penetrating cable clamp construction, need use specific purpose tool, difficulty of construction is large, and expense is high.
Summary of the invention
In order to overcome problems of the prior art, the invention provides a kind of 10kV surge arrester with external series gaps and connect insulated conductor electric discharge device.This electric discharge device is simple in structure, easy for installation, takes ceramic sealing device by the encapsulation of pricker and ball discharge, avoids rain erosion wire core body, extension lead useful life.
The technical solution used in the present invention is: a kind of 10kV surge arrester with external series gaps connects insulated conductor electric discharge device, discharge body is arranged on insulated conductor by insulator, described discharge body comprises the metallic conductor that pricker, installation base and upper ball discharge connect as one successively, described insulator comprises that a cylinder, two are less than the ceramic insulation shell that the cylinder of semicircle, upper circular hole and lower circular hole are integrated, the pricker of discharge body upward, installation base is positioned at the upper circular hole of ceramic insulation shell, with clip, ceramic insulation shell is fastened on to the bottom of insulated conductor; Described pricker punctures insulated conductor external insulation layer and contacts with insulated conductor core body, and upper ball discharge is positioned at the lower circular hole that lower end is opened wide.
Described clip is arranged on the semicylinder at ceramic insulation shell two ends, fastening through fixed bolt hole with bolt.
The interior semicircle orifice of described semicylinder matches with the external cylindrical surface of insulated conductor external insulation layer.
The invention has the beneficial effects as follows: this 10kV surge arrester with external series gaps connects insulated conductor electric discharge device and comprises discharge body and ceramic insulation shell, the pricker of discharge body upward, installation base is positioned at the upper circular hole of ceramic insulation shell, with clip, ceramic insulation shell is fastened on to the bottom of insulated conductor.Pricker punctures insulated conductor external insulation layer and contacts with insulated conductor core body, and upper ball discharge is positioned at the lower circular hole that lower end is opened wide.This electric discharge device is simple in structure, easy for installation, takes ceramic sealing device by the encapsulation of pricker and ball discharge, has avoided rain erosion wire core body, has extended wire useful life.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, patent of the present invention is further illustrated
Fig. 1 is the structure chart that a kind of 10kV surge arrester with external series gaps connects insulated conductor electric discharge device.
Fig. 2 is the A-A view in Fig. 1.
Fig. 3 is the B-B view in Fig. 1.
In figure: 1, insulated conductor core body, 2, insulated conductor external insulation layer, 3, ceramic insulation shell, 3a, cylinder, 3b, be less than the cylinder of semicircle, 3c, upper circular hole, 3d, lower circular hole, 4, pricker, 5, upper ball discharge, 5a, installation base, 6, clip, 6a, fixed bolt hole.
Embodiment
Fig. 1,2,3 shows the structure chart that a kind of 10kV surge arrester with external series gaps connects insulated conductor electric discharge device.In figure, discharge body is fixed on insulated conductor by insulator, discharge body comprises the metallic conductor that pricker 4, installation base 5a and upper ball discharge 5 connect as one successively, insulator comprises that a cylinder 3a, two are less than the ceramic insulation shell 3 that the cylinder 3b of semicircle, upper circular hole 3c and lower circular hole 3d are integrated, the pricker 4 of discharge body upward, installation base 5a is positioned at the upper circular hole 3c of ceramic insulation shell 3, with clip 6, ceramic insulation shell 3 is fastened on to the bottom of insulated conductor.The interior semicircle orifice of semicylinder 3b matches with the external cylindrical surface of insulated conductor external insulation layer 2.Clip 6 is arranged on the semicylinder 3b at ceramic insulation shell 3 two ends, fastening through fixed bolt hole 6a with bolt.Pricker 4 punctures insulated conductor external insulation layer 2 and contacts with insulated conductor core body 1, and upper ball discharge 5 is positioned at the lower circular hole 3d that lower end is opened wide.
Adopt above-mentioned technical scheme, the technical problem underlying of solution is: on market, existing product is because construction is complicated, difficulty is large, cost is high.Destroy the insulating barrier of insulated conductor simultaneously, reduce the life-span of wire operation.Owing to there being live metal part exposed at outer surface, lost the basic intention of application insulated conductor simultaneously.
Ceramic insulation shell is selected the alumina porcelain of weatherability and excellent strength, and vitreous coating outside porcelain body, improves ageing properties simultaneously.Ceramic package is designed to circular arc, is applicable to the wire of various different-diameters.Pricker and ball discharge are designed to one.By pricker and ball discharge fixedly sealing cover in ceramic insulation shell.
During installation, determine that electric discharge device is behind the position of insulated conductor, firmly pricker is penetrated to insulated conductor.Both sides are fixed device with clip, and pricker punctures the insulating barrier of insulated conductor simultaneously, and the conductor of pricker and insulated conductor is connected.The insulating barrier of ceramic insulation shell and insulated conductor compresses, and makes the snow-broth of rainwater and thawing can not penetrate into insulated conductor inside by pricker.The discharging gap of arrester electrode of ball discharge and any pattern forms the atmospherical discharges gap of surge arrester with external series gaps.
When mounted, sparking electrode device takes ceramic material to seal insulation, the sparking electrode of high-pressure side has been simplified many, does not need with insulating cover, by sparking electrode cover envelope, to have reduced material consumption simultaneously again.Every product can be saved 50 yuan of Master Costs, greatly reduces the cost of product.Complicated operation when original electric discharge wire clamp is installed in addition.The excessive wire of stabbing of exerting oneself, firmly the broken insulating barrier of spinule, must turn round spanner construction by special power.This device is as long as tighten clip with normal screws cutter.Particularly take ceramic sealing device by after the encapsulation of pricker and ball discharge, avoided rain erosion wire core body, extension lead useful life, during installation, work efficiency has improved 3 times.
Claims (3)
1. a 10kV surge arrester with external series gaps connects insulated conductor electric discharge device, discharge body is arranged on insulated conductor by insulator, it is characterized in that: described discharge body comprises pricker (4), the metallic conductor that installation base (5a) and upper ball discharge (5) connect as one successively, described insulator comprises a cylinder (3a), two cylinders (3b) that are less than semicircle, the ceramic insulation shell (3) that upper circular hole (3c) and lower circular hole (3d) are integrated, the pricker of discharge body (4) upward, installation base (5a) is positioned at the upper circular hole (3c) of ceramic insulation shell (3), with clip (6), ceramic insulation shell (3) is fastened on to the bottom of insulated conductor, described pricker (4) punctures insulated conductor external insulation layer (2) and contacts with insulated conductor core body (1), and upper ball discharge (5) is positioned at the lower circular hole (3d) that lower end is opened wide.
2. a kind of 10kV surge arrester with external series gaps according to claim 1 connects insulated conductor electric discharge device, it is characterized in that: described clip (6) is arranged on the semicylinder (3b) at ceramic insulation shell (3) two ends, fastening through fixed bolt hole (6a) with bolt.
3. a kind of 10kV surge arrester with external series gaps according to claim 1 connects insulated conductor electric discharge device, it is characterized in that: described in be less than the cylinder (3b) of semicircle interior semicircle orifice match with the external cylindrical surface of insulated conductor external insulation layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719604.7A CN103715608A (en) | 2013-12-24 | 2013-12-24 | 10kV outer string gap lightning arrester connection insulation lead discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719604.7A CN103715608A (en) | 2013-12-24 | 2013-12-24 | 10kV outer string gap lightning arrester connection insulation lead discharging device |
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| CN103715608A true CN103715608A (en) | 2014-04-09 |
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| CN201310719604.7A Pending CN103715608A (en) | 2013-12-24 | 2013-12-24 | 10kV outer string gap lightning arrester connection insulation lead discharging device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542624A (en) * | 1993-06-03 | 1996-08-06 | Hr Smith (Technical Developments) Ltd. | Lightning strike protection |
| CN2713598Y (en) * | 2004-06-30 | 2005-07-27 | 列剑平 | Lightning arrester type insulator |
| CN201001018Y (en) * | 2006-12-30 | 2008-01-02 | 上海兆邦电力器材有限公司 | Antiarc puncture metal ware |
| CN201126860Y (en) * | 2007-09-14 | 2008-10-01 | 固力发电气有限公司 | Lightning protection terminal holder of insulative conductor |
| CN201478768U (en) * | 2009-08-04 | 2010-05-19 | 李景禄 | Adjustable clearance lightning protection device for a distribution line of a power system |
| CN203674557U (en) * | 2013-12-24 | 2014-06-25 | 大连法伏安电器有限公司 | Discharging apparatus equipped with 10kV external series gap lightning arrester connected with insulated wire |
-
2013
- 2013-12-24 CN CN201310719604.7A patent/CN103715608A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542624A (en) * | 1993-06-03 | 1996-08-06 | Hr Smith (Technical Developments) Ltd. | Lightning strike protection |
| CN2713598Y (en) * | 2004-06-30 | 2005-07-27 | 列剑平 | Lightning arrester type insulator |
| CN201001018Y (en) * | 2006-12-30 | 2008-01-02 | 上海兆邦电力器材有限公司 | Antiarc puncture metal ware |
| CN201126860Y (en) * | 2007-09-14 | 2008-10-01 | 固力发电气有限公司 | Lightning protection terminal holder of insulative conductor |
| CN201478768U (en) * | 2009-08-04 | 2010-05-19 | 李景禄 | Adjustable clearance lightning protection device for a distribution line of a power system |
| CN203674557U (en) * | 2013-12-24 | 2014-06-25 | 大连法伏安电器有限公司 | Discharging apparatus equipped with 10kV external series gap lightning arrester connected with insulated wire |
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Application publication date: 20140409 |