CN105790074A - Insulator voltage limiter for urban mass transit overhead contact system - Google Patents
Insulator voltage limiter for urban mass transit overhead contact system Download PDFInfo
- Publication number
- CN105790074A CN105790074A CN201610195702.9A CN201610195702A CN105790074A CN 105790074 A CN105790074 A CN 105790074A CN 201610195702 A CN201610195702 A CN 201610195702A CN 105790074 A CN105790074 A CN 105790074A
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- CN
- China
- Prior art keywords
- voltage
- gold utensil
- limiting element
- voltage limiter
- urban rail
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/16—Series resistor structurally associated with spark gap
Abstract
The invention relates to an insulator voltage limiter for an urban mass transit overhead contact system. The insulator voltage limiter is characterized in that the voltage limiter is an integrated limiter and comprises an insulation core rod (5), wherein two ends of the insulation core rod (5) are respectively connected with a first fitting (1) and a second fitting (14) capable of bearing mechanical force, the outer side of the insulation core rod (5) is provided with a voltage limit element (4), the voltage limit element (4) is connected with the first fitting (1), the outer side of the voltage limit element (4) is provided with a grading ring (3), a discharging gap (13) is formed between the grading ring (3) and the second fitting (14), and the first fitting (1), the second fitting (14), the insulation core rod (5) and the voltage limit element (4) are combined to form one body which is externally wrapped in a composite sleeve (2). The insulator voltage limiter realizes integration of supporting leads and a lightning protection part, the discharge series connection air gap distance is fixed, one-time mounting molding can be realized, and properties of simple structure, convenient mounting, small volume, light weight and low cost are realized.
Description
Technical field
The present invention relates to a kind of voltage limiter, particularly to a kind of urban rail transit contact network insulator voltage limiter, be particularly well-suited on urban rail transit elevated circuit.
Background technology
Urban track traffic is fast-developing, and circuit is day by day intensive, and elevated line is gradually increased.Tractive power supply system is the important system in railway traffic engineering, and function is to vehicle reliable power supply.The apparatus insulated level of tractive power supply system is very low, it is difficult to resist lightning surge, all there occurs more Lightning Disaster in the many engineerings put into operation, and causes contact net insulator or traction substation equipment to damage, even affects driving.On urban rail transit elevated circuit, the Lightning Disaster of tractive power supply system is more, loses bigger.At present, the whole nation has been put into operation in urban rail engineering, and lightning protection method is less and function imperfection, can not meet the requirement that modern urban rail system high reliability is run.
Summary of the invention
The problem to be solved in the present invention is: provide one can overcome drawbacks described above, lightning fault probability that city rail handing-over touch net can be greatly lowered, prevent the insulator arc-over that thunderbolt circuit causes, reduce the line tripping rate that thunderbolt causes, improve the lightning protection level of urban rail transit contact network, replace the urban rail transit contact network insulator voltage limiter that the bracket insulator in current urban rail transit contact network and the insulator that casts anchor use, namely it possess the function that insulator supports or connects, the effect of spark gap can be played again, it is particularly well-suited to existing urban rail catenary traffic system.
The technical solution adopted for the present invention to solve the technical problems is: the integrated voltage limiter of voltage limiter, it includes insulation mandrel, insulation mandrel two ends connect the first gold utensil that can bear mechanical force respectively and the second gold utensil is connected, one voltage-limiting element of insulation mandrel arranged outside, voltage-limiting element and the first gold utensil are connected, voltage-limiting element arranged outside grading ring, forming discharging gap between grading ring and the second gold utensil, the first gold utensil, the second gold utensil, insulation mandrel and voltage-limiting element are combined into one rear outside covered composite yarn overcoat.
First gold utensil, the second gold utensil wherein one end be hatch frame, the other end is monaural structure.Hatch frame is connected with urban rail transit contact network bracket, and monaural structure is connected with urban rail transit contact network cantilever base, and current urban rail transit contact network bracket insulator can be replaced to use.
First gold utensil, the second gold utensil attachment structure adopt monaural structure.Adopt urban rail transit contact network insulator two ends gold utensil attachment structure of casting anchor, adopt monaural structure that the current urban rail transit contact network insulator that casts anchor can be replaced to use.
Described voltage-limiting element includes the upper connection electrode being sequentially connected with, zinc oxide resistance sheet, bottom electrode, also include plastic barrel, plastic barrel is by upper connection electrode, zinc oxide resistance sheet, is socketed on insulation mandrel after bottom electrode fixed Combination is integral, and wherein voltage-limiting element is connected by upper connection electrode and the first gold utensil.
Described voltage-limiting element is connected by plastic barrel and the first gold utensil, and upper connection electrode is connected sheet and is connected with enumerator, and enumerator connects sheet and realizes being electrically connected with voltage-limiting element.
The structure length of described integrated voltage limiter is between 200-800mm, and maximum outside diameter size is between 100-300mm.
Owing to series gap is isolated, voltage limiter body is not subject to system dc working voltage；Under the sufficiently high induced lightening of amplitude or direct lightning strike overvoltage effect, voltage limiter body is Low ESR, series gap is breakdown, and thunder energy is discharged by resistor disc, leaks into the earth, after lightning impulse, the voltage being applied to voltage limiter body two ends is system working voltage, and body is high impedance, and direct current afterflow electric arc extinguishes within the extremely short time, the air gap insulation recovers rapidly, and circuit returns to normal operating condition.
The present invention is had the beneficial effect that
1, avoiding the problem that existing spark gap and insulator partial installation bring, the electric discharge series connection air gap distance of the present invention is fixed, can once mounting molding, easy for installation, maintenance cost is low.
2, avoid existing portable protective gaps and can not stop the defect of line tripping, and easy for installation.
3, voltage-limiting element and insulation column Integral mold pressing formation, simple in construction, easy for installation, volume is little, and expense is low.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention can replace that bracket insulator uses；
Fig. 2 is that the present invention can replace casting anchor the structural representation that insulator uses；
Fig. 3 is the structural representation that the present invention can replace that bracket insulator uses and can be connected with enumerator；
Fig. 4 is that the present invention can replace casting anchor the structural representation that insulator uses and can be connected with enumerator；
Fig. 5 is a kind of integrative-structure figure of integration voltage limiter before mold pressing；
Fig. 6 is opening gold utensil one structure chart；
Fig. 7 is monaural gold utensil one structure chart；
Fig. 8 is pressure limiting component structure figure；
Fig. 9 is the structural representation that voltage-limiting element removes plastic barrel；
Wherein the 1, first gold utensil；2, composite sheath；3, grading ring；4, voltage-limiting element；5, insulation mandrel；6, hatch frame gold utensil；7, monaural structure gold utensil；8, plastic barrel；9, upper connection electrode；10, zinc oxide resistance sheet；11, bottom electrode；12, enumerator connects sheet；13, discharging gap；14, the second gold utensil.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described further:
Embodiment 1:
As Figure 1-Figure 2, urban rail transit contact network insulator voltage limiter of the present invention, including insulation mandrel 5, insulation mandrel 5 two ends and the first gold utensil 1 bearing mechanical force, second gold utensil 14 is connected, one voltage-limiting element 4 of insulation mandrel 5 arranged outside, voltage-limiting element 4 is connected with the first gold utensil 1, voltage-limiting element 4 arranged outside grading ring 3, forming discharging gap 13 between grading ring 3 and the second gold utensil 14, first gold utensil the 1, second gold utensil 14, insulation mandrel 5 and voltage-limiting element 4 are combined into one rear outside covered composite yarn overcoat 2.
In Fig. 1, first gold utensil the 1, second gold utensil 14 attachment structure adopts urban rail transit contact network bracket insulator two ends gold utensil attachment structure, its first gold utensil 1 is hatch frame, it is connected with urban rail transit contact network high-pressure side, second gold utensil 14 is monaural structure, it is connected with urban rail transit contact network pillar and is connected, current urban rail transit contact network bracket insulator can be replaced to use.
In Fig. 2, first gold utensil the 1, second gold utensil 14 attachment structure adopts urban rail transit contact network insulator two ends gold utensil attachment structure of casting anchor, adopt monaural structure gold utensil 7, first gold utensil 1 is connected with contact net high-pressure side, second gold utensil 14 is connected with low-pressure side, and the current urban rail transit contact network insulator that casts anchor can be replaced to use.
Voltage-limiting element 4 is made up of upper connection electrode 9, zinc oxide resistance sheet 10, bottom electrode 11 and plastic barrel 8, plastic barrel 8 is by upper connection electrode 9, zinc oxide resistance sheet 10, bottom electrode 11 is socketed in after being combined into one on insulation mandrel 5, and wherein voltage-limiting element 4 is connected with gold utensil by upper connection electrode 9.Discharge loop is formed by gold utensil.
The structure length of integration voltage limiter is between 200-800mm, and maximum outside diameter size is between 100-300mm.
Embodiment 2:
As Figure 3-Figure 4, urban rail transit contact network insulator voltage limiter of the present invention, including insulation mandrel 5, insulation mandrel 5 two ends and the first gold utensil 1 bearing mechanical force, the second gold utensil 14 is connected, one voltage-limiting element 4 of insulation mandrel 5 arranged outside, voltage-limiting element 4 is connected with gold utensil, voltage-limiting element 4 arranged outside grading ring 3, forms discharging gap 13 between grading ring 3 and gold utensil, two ends gold utensil, insulation mandrel 5 and voltage-limiting element 4 are combined into one rear outside covered composite yarn overcoat 2.
In Fig. 3, first gold utensil the 1, second gold utensil 14 attachment structure adopts urban rail transit contact network bracket insulator two ends gold utensil attachment structure, first gold utensil 1 is hatch frame, it is connected with urban rail transit contact network bracket, second gold utensil 14 is monaural structure, it is connected with urban rail transit contact network cantilever base, current urban rail transit contact network bracket insulator can be replaced to use.
In Fig. 4, first gold utensil the 1, second gold utensil 14 attachment structure adopts urban rail transit contact network insulator two ends gold utensil attachment structure of casting anchor, and adopts monaural structure, and the current urban rail transit contact network insulator that casts anchor can be replaced to use.
Voltage-limiting element 4 is by upper connection electrode 9, zinc oxide resistance sheet 10, bottom electrode 11 and plastic barrel 8 form, plastic barrel 8 is by upper connection electrode 9, zinc oxide resistance sheet 10, bottom electrode 11 is socketed in after being combined into one on insulation mandrel 5, voltage-limiting element 4 is connected with gold utensil by insulated plastic barrel 8, cut off the loop formed by gold utensil, upper connection electrode 9 is connected sheet 12 and is connected with enumerator, enumerator connects sheet 12 and realizes electrical connection with voltage-limiting element 4, and enumerator connects sheet 12 and is connected with enumerator again through wire, it is achieved the tally function of integration voltage limiter.
The structure length of integration voltage limiter is between 200-800mm, and maximum outside diameter size is between 100-300mm.
The operation principle of the present invention:
Described urban rail transit contact network insulator voltage limiter, when system is properly functioning, owing to series gap is isolated, voltage-limiting element is not subject to system working voltage.Under the sufficiently high induced lightening of amplitude or direct lightning strike overvoltage effect, voltage-limiting element is Low ESR, series gap is breakdown, thunder energy is discharged by valve block post, after lightning impulse, the voltage being applied to voltage-limiting element body two ends is system working voltage, and body is high impedance, the air gap insulation recovers rapidly, and circuit returns to normal operating condition.
The present invention is not only able to the effect playing bracket insulator and the insulator that casts anchor, voltage-limiting element can also be utilized to improve the lightning protection level of circuit, it it is a kind of product integrating and supporting wire with lightning protection, and electric discharge series connection air gap distance fix, can once mounting molding, simple in construction, easy for installation, compact, lightweight, cost is low.
Claims (6)
1. a urban rail transit contact network insulator voltage limiter, it is characterized in that: the integrated voltage limiter of voltage limiter, it includes insulation mandrel (5), insulation mandrel (5) two ends connect the first gold utensil (1) that can bear mechanical force respectively and are connected with the second gold utensil (14), one voltage-limiting element (4) of insulation mandrel (5) arranged outside, voltage-limiting element (4) is connected with the first gold utensil (1), voltage-limiting element (4) arranged outside grading ring (3), discharging gap (13) is formed between grading ring (3) and the second gold utensil (14), first gold utensil (1), second gold utensil (14), insulation mandrel (5) and voltage-limiting element (4) are combined into one rear outside covered composite yarn overcoat (2).
2. urban rail transit contact network insulator voltage limiter according to claim 1, it is characterised in that: the first gold utensil (1), the second gold utensil (14) wherein one end be hatch frame, the other end is monaural structure.
3. urban rail transit contact network insulator voltage limiter according to claim 1, it is characterised in that the first gold utensil (1), the second gold utensil (14) attachment structure adopt monaural structure.
4. urban rail transit contact network insulator voltage limiter according to claim 1, it is characterized in that: described voltage-limiting element (4) includes the upper connection electrode (9) being sequentially connected with, zinc oxide resistance sheet (10), bottom electrode (11), also include plastic barrel (8), plastic barrel (8) is by upper connection electrode (9), zinc oxide resistance sheet (10), it is socketed on insulation mandrel (5) after bottom electrode (11) fixed Combination is integral, wherein voltage-limiting element (4) is connected with the first gold utensil (1) by upper connection electrode (9).
5. urban rail transit contact network insulator voltage limiter according to claim 4, it is characterized in that: described voltage-limiting element (4) is connected with the first gold utensil (1) by plastic barrel (8), upper connection electrode (9) is connected sheet (12) and is connected with enumerator, and enumerator connects sheet (12) and realizes electrical connection with voltage-limiting element (4).
6. urban rail transit contact network insulator voltage limiter according to claim 1, it is characterised in that: the structure length of described integrated voltage limiter is between 200-800mm, and maximum outside diameter size is between 100-300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195702.9A CN105790074A (en) | 2016-03-31 | 2016-03-31 | Insulator voltage limiter for urban mass transit overhead contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195702.9A CN105790074A (en) | 2016-03-31 | 2016-03-31 | Insulator voltage limiter for urban mass transit overhead contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105790074A true CN105790074A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610195702.9A Pending CN105790074A (en) | 2016-03-31 | 2016-03-31 | Insulator voltage limiter for urban mass transit overhead contact system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113200A (en) * | 2021-04-14 | 2021-07-13 | 山东迅实电气有限公司 | Lower anchor voltage limiter for urban rail transit contact net |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003115362A (en) * | 2001-10-03 | 2003-04-18 | Ngk Insulators Ltd | Gap type lightning protection equipment |
| CN101697299A (en) * | 2009-10-24 | 2010-04-21 | 山东迅实电气有限公司 | Lightning protection insulator for insulated conductor of overhead line |
| CN104022444A (en) * | 2014-06-16 | 2014-09-03 | 山东迅实电气有限公司 | Rod-shaped suspended voltage limiter for overhead line |
| CN105070427A (en) * | 2015-08-22 | 2015-11-18 | 山东迅实电气有限公司 | Cross arm support voltage limiter for overhead line |
| CN205583369U (en) * | 2016-03-31 | 2016-09-14 | 山东迅实电气有限公司 | Urban rail transit is insulator voltage limiter for contact net |
-
2016
- 2016-03-31 CN CN201610195702.9A patent/CN105790074A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003115362A (en) * | 2001-10-03 | 2003-04-18 | Ngk Insulators Ltd | Gap type lightning protection equipment |
| CN101697299A (en) * | 2009-10-24 | 2010-04-21 | 山东迅实电气有限公司 | Lightning protection insulator for insulated conductor of overhead line |
| CN104022444A (en) * | 2014-06-16 | 2014-09-03 | 山东迅实电气有限公司 | Rod-shaped suspended voltage limiter for overhead line |
| CN105070427A (en) * | 2015-08-22 | 2015-11-18 | 山东迅实电气有限公司 | Cross arm support voltage limiter for overhead line |
| CN205583369U (en) * | 2016-03-31 | 2016-09-14 | 山东迅实电气有限公司 | Urban rail transit is insulator voltage limiter for contact net |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113200A (en) * | 2021-04-14 | 2021-07-13 | 山东迅实电气有限公司 | Lower anchor voltage limiter for urban rail transit contact net |
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Application publication date: 20160720 |
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| RJ01 | Rejection of invention patent application after publication |