EP3345267A1 - Funkenstreckenanordnung - Google Patents
FunkenstreckenanordnungInfo
- Publication number
- EP3345267A1 EP3345267A1 EP16738437.9A EP16738437A EP3345267A1 EP 3345267 A1 EP3345267 A1 EP 3345267A1 EP 16738437 A EP16738437 A EP 16738437A EP 3345267 A1 EP3345267 A1 EP 3345267A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow body
- spark gap
- chamber
- wall
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
-
- 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
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/04—Housings
-
- 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
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
- H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
Definitions
- spark gap arrangement In the case of a spark gap, sparking occurs in a discharge space between two electrodes
- the discharge space can be formed by a hollow-cylindrical component body, for example made of ceramic, and frontally arranged electrodes which form a chamber.
- SBV self-breakdown voltage
- pre-fires early igniters
- multiple igniters in triggered spark gaps multiple igniters in triggered spark gaps.
- the pre-ignition can by a steaming of the
- Component body are favored by deposited by the electrodes metal. This will isolate the insulation
- the electrodes are reduced with advancing age of the spark gap and fuses are favored. A significant reduction in unwanted premature fuzes also at
- the spark gap according to the invention is a
- Hollow body are arranged so that in the interior of the sun
- a recess is provided in the hollow body inner wall, so that the chamber protrudes on at least one end side radially outwardly beyond the hollow body inner wall.
- a hollow body is a substantially tubular body of any, preferably circular, cross-section, the Diameter, however, may be larger than its length.
- the open ends of the hollow body are the end faces. It should also be noted that its lateral surfaces between the
- End faces do not necessarily extend only axially, but also have at least one depression, which is circumferential on the inner shell.
- the recess may be a step with a substantially radially extending and a substantially perpendicular thereto, axially extending region. The latter is accompanied by an internal cross section change of the hollow body and / or a change in thickness of the hollow body wall.
- the electrodes are electrical conductors, which are arranged in the frontal region of the hollow body, so that electrode and hollow cylinder walls form a chamber, the
- Discharge space is.
- the longitudinal axis of the arrangement extends between the electrodes and is at a
- Electrodes are preferably connected in a gas-tight manner to the hollow body.
- the connection may be such that the
- Electrodes are placed on the end faces of the hollow body without touching the inner shell.
- the attachment can be made such that the electrodes also touch the frontal region of the inner shell.
- the chamber is radially expanded in the contact area between electrodes and hollow bodies.
- End faces of the chamber creates an area that is not covered by metal fumes from the arc discharges
- Main electrode gap can be achieved.
- the radial or in the Essentially radially extending portions of the recess remain without vapor deposition.
- a residual insulation between the electrodes along the inner surface of the hollow body can be maintained even as the life progresses.
- the sinking prevents pre-ignition. If appropriate
- the hollow body has at both end sides
- Main discharge covered.
- the potential no longer aligns with the main side electrodes, but it will be at the center potential between the main electrodes, that is, at about 0 volts or half
- the electrodes can each have a projecting into the chamber interior area, for example, pin or cylinder or is dome-shaped.
- the desired course of the flashover can be directed to the region between the electrode ends,
- the last-mentioned effect can be intensified if the region projecting into the interior of the chamber has a side area which runs parallel to the hollow body inner wall.
- the projecting from the front side with depression into the chamber interior extends further into
- Chamber inside as the projecting from the front without sinking into the chamber interior area This asymmetry reduces evaporation in the area of the depression.
- the following dimensions are advantageous in an arrangement with two-sided depressions:
- the main distance d is the shortest distance between the
- Electrodes which usually occur between the ends of the projecting into the chamber areas.
- a connection to the hollow body wall is optimally decoupled from the main discharge.
- larger values for the ratio d / a that is, d / a> 2 can also be selected, in the case where the rear chamber area with the sinking of metal fumes from the
- Main discharge gap can be largely kept free. This can be achieved for example by an elongated chamber. In a depression on only one end face, the ratio between the main distance of the electrodes d and the distance a between the hollow body inner wall and the ins
- Chamber interior projecting area greater than or equal to 0.75, preferably between 0.75 and 1.
- the distance a between the hollow body inner wall and the region of the electrode projecting into the interior of the chamber and the axial length b of the graduation are preferably the same or almost the same: a ⁇ b. In this dimensioning is no discharge between the hollow body inner wall and the
- the recess has a radial depth s which is at most 20% of the wall thickness of the hollow body, so that the strength of the hollow body material, preferably a ceramic, and thus the resistance to fractures and
- the ratio of chamber height to creepage distance along the hollow body inner jacket of the chamber is advantageously greater than or equal to 0.8, so that the gradation a
- the creepage distance is the shortest path that a potential leakage current between the electrodes along the hollow body inner jacket can take.
- the hollow body is a
- the electrodes have a pin-shaped or dome-shaped projecting into the chamber interior area.
- the electrodes have Mounting flanges on. These are radially extending areas for consolidation on the end faces of the hollow cylinder.
- Figure 1 shows a schematic sectional view of a
- FIG. 1 shows a schematic sectional view of another embodiment of a spark gap.
- Figure 3 shows a schematic sectional view of another embodiment of a spark gap.
- Figure 4 shows a schematic sectional view of another embodiment of a spark gap.
- Figure 5 shows a schematic sectional view yet
- FIG. 1 shows a schematic sectional view of an embodiment of a spark gap arrangement, short spark gap.
- the spark gap comprises a hollow body 1, which is designed as a hollow cylinder made of insulating material and serves as a component body.
- a hollow body 1 which is designed as a hollow cylinder made of insulating material and serves as a component body.
- Embodiment is the hollow body 1 made of ceramic.
- the hollow body 1 has an inner wall 3, are provided in the front-side stepped depressions 5.
- Indentations 5 are radial cuts in the inner wall 3 of the hollow body 1, with an end face
- the following designates the region of the hollow body, which is located between the end faces, ie ceiling and floor
- the depression 5 has a radial region 7 and an axial region 9 perpendicular thereto. It should be noted that the recess 5 may have rounded edges, so that a wave-shaped cross-section may also result. The depth s of the recess 5 is the distance between the
- Depression b is the distance between the end face of the hollow cylinder 3 and the radial region 5. The distance between the depressions 5 and thus the height of the inner wall 3 is L.
- Mounting flanges 15 for strengthening on the end faces of the hollow body 1 have.
- the dome-shaped regions 13 have a cylindrical foot area and a rounded, projecting into the chamber end.
- a device 17 for receiving the ignition device and an ignition electrode 19 is provided in one of the electrodes 13.
- the main distance between the electrodes 11 is d.
- the electrodes 11 are preferably attached to the hollow body 1 in a gastight manner.
- a central recess for the ignition electrode 19, which projects into the dome-shaped region 13, is provided in the upper region of the electrode 11.
- the hollow cylindrical body 1 and the electrodes 11 form a chamber 23 serving as a discharge space. In this
- the height of the chamber H is equal to the height of the hollow body 1.
- the length of the depression b is consistent with the distance between the end face of the chamber and the radial portion 7 match. This would be at s.der
- Hollow body 1 of the spark gap rotationally symmetrical to
- the depressions 5 can as
- the punctures are made on the inside wall of the face.
- the punctures reduce the wall thickness in the region of the two hollow body ends by typically 20%, so that the strength of the ceramic and thus the resistance to breakage and shearing are not or only slightly reduced.
- an ignition pulse leads the
- Igniter 19 causes a sparkover between the electrodes 11 takes place. Due to multiple sparking, metal vapor deposition can be deposited on the inside of the hollow body during the service life of the spark gap.
- the depressions 5 on the end faces of the hollow body 1 form a substantially radially extending region 7, which can not be achieved by metal evaporations of the arc discharges in the main electrode gap. This perpendicular to the inner wall 3 extending region 7 remains without vapor deposition. Thus, a residual insulation between the electrodes 11 is always maintained.
- Main discharge gap can be largely kept free. Since the ceramic hollow body wall is now electrically separated from the lateral mounting flanges 15, no electrical side discharge can develop over the ceramic wall. For this purpose, it is also decisive that the length b of the depressions 5 is also in a certain relationship to the main discharge gap and ideally to the distance a between the hollow body inner wall 3 and the electrode wall
- Figure 2 shows a schematic sectional view of another embodiment of a spark gap.
- the electrodes 11 recesses 25 in the chamber interior, which are adjacent to the vertical inner wall of the depressions 5 or can touch them (not shown).
- This construction can be a more fitting
- b is the distance between the inner wall 3 and the chamber front side.
- H is the chamber height between the end faces.
- Influence of b in an electrode with depression 25 does not correspond to the influence of an equal size b in the case of an electrode without a depression, but rather corresponds to a smaller b in comparison to an electrode without a depression.
- Figure 3 shows a schematic sectional view of another embodiment of a spark gap.
- the embodiment has a recess 5 on only one of the end sides. Furthermore, one of the electrodes 11 extends further into the interior space than the opposite one. The more extensive is the electrode, which is attached to the same front side as the depression 5. This is the ignition 19 opposite
- Electrode which is also called counter electrode. The distance between the depressions 5 and not
- Inner wall 3 is L.
- Figure 4 shows a schematic sectional view of another embodiment of a spark gap.
- Figure 4 shows an embodiment with a
- FIG. 4 shows a schematic sectional view of yet another embodiment of a spark gap.
- a security element 27 which can also be designated by the English term “safety bush”, is fastened to the counterelectrode 11. After filling the spark gap with gas, it becomes attached to the electrode
- the depression 5 is marked by an encircling.
Landscapes
- Spark Plugs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015114846.3A DE102015114846A1 (de) | 2015-09-04 | 2015-09-04 | Funkenstreckenanordnung |
| PCT/EP2016/066648 WO2017036651A1 (de) | 2015-09-04 | 2016-07-13 | Funkenstreckenanordnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3345267A1 true EP3345267A1 (de) | 2018-07-11 |
| EP3345267B1 EP3345267B1 (de) | 2021-09-01 |
Family
ID=56409617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16738437.9A Active EP3345267B1 (de) | 2015-09-04 | 2016-07-13 | Funkenstreckenanordnung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10186843B2 (de) |
| EP (1) | EP3345267B1 (de) |
| JP (1) | JP6694951B2 (de) |
| DE (1) | DE102015114846A1 (de) |
| WO (1) | WO2017036651A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017126371A1 (de) | 2017-11-10 | 2019-05-16 | Tdk Electronics Ag | Triggerbare Funkenstrecke, Schaltkreis mit triggerbarer Funkenstrecke und Verfahren zur Herstellung einer triggerbaren Funkenstrecke |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE789890A (fr) | 1971-10-12 | 1973-02-01 | Western Electric Co | Appareil de protection contre les surtensions, a tube a decharge, et son procede de realisation |
| US3780350A (en) * | 1971-12-16 | 1973-12-18 | Gen Signal Corp | Surge arrester |
| GB1389142A (en) * | 1973-05-31 | 1975-04-03 | Comtelco Uk Ltd | Electrical surge arrestor |
| JPS5620953Y2 (de) * | 1978-06-06 | 1981-05-18 | ||
| US4280098A (en) * | 1979-05-25 | 1981-07-21 | Veradyne Corp. | Coaxial spark gap switch |
| JPS58148891U (ja) * | 1982-03-31 | 1983-10-06 | 音羽電機工業株式会社 | 避雷器の直列ギヤツプ |
| DE3218948A1 (de) * | 1982-05-19 | 1983-11-24 | Krone Gmbh, 1000 Berlin | Ueberspannungsableiter |
| US4672259A (en) * | 1985-10-23 | 1987-06-09 | Westinghouse Electric Corp. | Power spark gap assembly for high current conduction with improved sparkover level control |
| JP2539464Y2 (ja) * | 1992-04-13 | 1997-06-25 | 矢崎総業株式会社 | ガス入り放電管 |
| EP1075064B1 (de) * | 1999-07-09 | 2007-04-25 | Leutron GmbH | Blitz- und Überspannungsschutzeinrichtung |
| JP2006024423A (ja) * | 2004-07-07 | 2006-01-26 | Okaya Electric Ind Co Ltd | 放電管 |
| SE532114C2 (sv) * | 2007-05-22 | 2009-10-27 | Jensen Devices Ab | Gasurladdningsrör |
| EP2162961B1 (de) * | 2007-06-21 | 2012-03-21 | Epcos AG | Vorrichtung und modul zum schutz vor blitzen und überspannungen |
-
2015
- 2015-09-04 DE DE102015114846.3A patent/DE102015114846A1/de not_active Withdrawn
-
2016
- 2016-07-13 JP JP2018511598A patent/JP6694951B2/ja active Active
- 2016-07-13 US US15/743,613 patent/US10186843B2/en active Active
- 2016-07-13 WO PCT/EP2016/066648 patent/WO2017036651A1/de not_active Ceased
- 2016-07-13 EP EP16738437.9A patent/EP3345267B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017036651A1 (de) | 2017-03-09 |
| US10186843B2 (en) | 2019-01-22 |
| EP3345267B1 (de) | 2021-09-01 |
| DE102015114846A1 (de) | 2017-03-09 |
| JP6694951B2 (ja) | 2020-05-20 |
| US20180198259A1 (en) | 2018-07-12 |
| JP2018530864A (ja) | 2018-10-18 |
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