EP3766086A1 - Parafoudre et procédé de montage d'un parafoudre - Google Patents

Parafoudre et procédé de montage d'un parafoudre

Info

Publication number
EP3766086A1
EP3766086A1 EP19713709.4A EP19713709A EP3766086A1 EP 3766086 A1 EP3766086 A1 EP 3766086A1 EP 19713709 A EP19713709 A EP 19713709A EP 3766086 A1 EP3766086 A1 EP 3766086A1
Authority
EP
European Patent Office
Prior art keywords
support means
surge arrester
pressing means
tubular housing
recess
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.)
Pending
Application number
EP19713709.4A
Other languages
German (de)
English (en)
Inventor
Erhard Pippert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3766086A1 publication Critical patent/EP3766086A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/102—Varistor boundary, e.g. surface layers

Definitions

  • the invention relates to a surge arrester according to the preamble of claim 1 and a method for mounting a surge arrester according to claim 9.
  • Surge arresters are used in the medium-voltage and high-voltage range, in order to safely dissipate so-called overvoltages, ie voltages far above the rated operating voltage in the plant, to earth. This will damage the equipment such as e.g. Transformers avoided.
  • a surge arrester for high voltage voltage can be arranged on an overhead line and in lightning strike or short circuit inadmissible high currents to the ground derived.
  • Surge arresters contain i.d.R. so-called varistors, i. electrical resistors whose electrical resistance is greatly reduced up to a design-related threshold voltage and above the threshold voltage, so that the surge arrester becomes a good electrical conductor. These resistors are therefore often referred to as so-called “varistors” (of English: “variable resistors”). It is the who e.g. Metal oxide resistors in disc form superimposed in a housing and connected at the respective ends of the housing with the high voltage potential and the ground potential. In this case, the surge arrester in Regelbe operation was hardly conductive, so that only a small leakage current flows to earth. In case of failure, however, flows a high leakage current.
  • a gattungsgemä SSE surge arrester in which a tubular housing is designed by a support device comparatively resistant to bending.
  • the support device has at least one inner clamping ring on the housing, which is conically shaped on the side facing away from the housing.
  • Ko nus equipped with a matching counter-cone support ring is placed.
  • the object of the invention is to provide a support device which provides improved bending strength with comparatively large manufacturing tolerances for the tubular housing.
  • the invention solves this problem by a Students Hopkinssab conductor according to claim 1.
  • the surge arrester according to the invention has the advantage that the support means in the longitudinal direction of the Matternapssab conductor has a recess which the support means, for. completely severed.
  • the support means is formed as a single hollow cylinder segment or ring segment. If a Anpressmit tel inserted into this recess, so even with a relatively large devia tions of the inner diameter of the tubular housing from the intended value still achieved a good contact pressure who the. Compared to the previous method larger manufacturing tolerances can be compensated, which allows a cost-effective production of the tubular housing than before.
  • the contact pressure means is substantially wedge-shaped. This is an advantage because it is characterized by the insertion depth of the pressing means in the support means always a clamping fit between contact pressure and support means on the one hand and support means and tubular housing on the other hand is achieved.
  • the contact pressure means is substantially form-lockingly arranged in the recess.
  • the recess has two con tact areas to the contact pressure, wherein the Kunststoffbe rich each have a guide groove, and wherein the pressing means at its the contact areas of the support means facing sides each having a guide projection, and wherein the Guide projections in the guide grooves are arranged.
  • the guide groove may have a triangular or quadrangular cross section. It is particularly preferred if the guide grooves have a parabolic shape.
  • the guide projections are preferably formed complementary to the guide grooves.
  • contemporary surge arrester put the guide and the guide projections the contact pressure means such on the support means that results in a substantially cylinder-shaped outer contour of contact pressure and support means, the housing is pressed without damage to the inside of the tubular Ge. This is an advantage because a simple and safe installation is guaranteed.
  • the support means is formed in wesent union as a hollow cylinder.
  • the support means has a plurality of hollow cylinder segments, the ausbil in the assembled state a plurality of recesses for receiving a plurality of pressing means.
  • the ausbil in the assembled state a plurality of recesses for receiving a plurality of pressing means.
  • 3 or 4 segments and correspondingly 3 or 4 pressing means can be used. This is advantageous because the hollow cylinder segments in conjunction with the Anpress agents allow a simple and very accurate adjustment of the support means to the inner diameter of the tubular housin ses.
  • the support means forms an annular step, in which the column is received substantially positive fit.
  • Overvoltage arresters the object of the invention to specify a method for mounting a surge arrester, which allows for comparatively large manufacturing tolerances for the tubular housing improved Biegefestig speed.
  • the invention solves this problem by a method for Mon days of surge arresters according to claim 9.
  • Preferred embodiments of the method according to the invention are described in claims 10 to 15. This results in the inventive method and its embodiments mutatis mutandis, the same advantages as explained above for the inventions to the invention surge.
  • FIG. 1 shows a first embodiment of a surge arrester according to the invention
  • Figure 2 is a first detail view of a second embodiment of a form according to the invention.
  • Figure 3 shows a cross section of the second embodiment according to
  • Figure 4 is a second detail view of the second embodiment form of Figure 2
  • FIG. 5 shows a third detail view of the second embodiment form according to FIG. 2
  • the Matternapsab conductor 1 shows a first embodiment of an inventions to the invention surge arrester 1.
  • the Studentsnapssab conductor 1 has a tubular housing 2, to which in the longitudinal direction of the arrester 1 respectively to the end fittings 3,
  • the tubular housing 2 is provided with an insulating layer 11 made of silicone.
  • an insulating layer 11 made of silicone.
  • another material such as ethylene-propylene-diene rubber (EPDM) can be used.
  • EPDM ethylene-propylene-diene rubber
  • the insulating layer 11 has screens for extending the creepage distance between the end fittings 3, 4.
  • support means 5, 6 are provided.
  • the support means are formed as hollow cylinders with recesses 9, 10.
  • the recesses 9, 10 are wedge-shaped. In the wedge-shaped recesses 9, 10 wedge-shaped pressing means 7, 8 are inserted.
  • the support means 5, 6 can be spread and thus pressed against the inside of the tubular housing.
  • This squeezing causes a reinforcement of the housing in the Be rich end fittings and thus an increased flexural strength in this area.
  • the wedge-shaped recesses are such that they face with their wider end of the respective end fitting 3, 4.
  • FIG. 2 shows a first detail view 20 of a second embodiment of the surge arrester according to the invention.
  • the support means is formed in this embodiment of four hollow cylinder segments 6, 17, 18, 19, the wedge-shaped recesses 10, 11, 13, 15 form.
  • wedge-shaped recesses 10, 11, 13, 15 wedge-shaped pressing means 7, 12, 13, 16 are positively inserted and cause an on to press the tubular housing 2.
  • wedge-shaped recesses in this embodiment with their schma leren end of the end fittings 3, 4 facing.
  • FIG. 3 shows a cross-section 30 of the embodiment 20 according to FIG. 2.
  • the hollow-cylinder segments 6, 17, 18, 19 each form two contact regions 50-57 with respect to the contact-pressure means 7, 12, 14, 16 in their recesses. These contact areas 50-57 each have a guide groove 58-65, which is formed parabolically rounded in the sem example.
  • the pa rabolic shape is easy to manufacture and offers good slip resistance.
  • the pressing means 7, 12, 14, 16 have at their respective contact areas 50-57 sides facing each case a guide projection on the guide in the respective Füh 58-65 is arranged.
  • the interaction of Füh tion grooves and guide projections causes the Anpress medium can not slip out of the hollow cylinder segments in the transverse direction.
  • the contact pressure means and the Hohlzylin dersegmente form a substantially cylindrical jacket-shaped outer contour of pressing means and support means, which can be pressed without damage to the inside of the tubular housing be.
  • Figures 4 and 5 show a second and a third De tail view of the second embodiment. It can be seen that the hollow cylinder segments 17, 18, 19 and also the pressing means 14, 16 are such that they form two annular peripheral steps 32, 33. Furthermore, it can be seen that the pressure means 14, 16 projections 30,
  • projections 30, 31 have. These projections 30, 31 form a further step 34, which serves as a support surface for a column with Varis factors.
  • the support surface 34 is thus formed by the projections 30, 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermistors And Varistors (AREA)

Abstract

La présente invention concerne un parafoudre comportant un boîtier tubulaire et un raccord d'extrémité relié à une extrémité du boîtier et sur lequel est disposée une colonne comportant au moins une résistance électrique, un moyen de support s'appuyant contre l'intérieur du boîtier tubulaire dans la zone du raccord d'extrémité, caractérisé en ce que le moyen de support comporte, dans la direction longitudinale du parafoudre, un évidement dans lequel est inséré un moyen de pression. L'invention concerne en outre un procédé de montage d'un parafoudre.
EP19713709.4A 2018-03-14 2019-03-06 Parafoudre et procédé de montage d'un parafoudre Pending EP3766086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018203893.7A DE102018203893A1 (de) 2018-03-14 2018-03-14 Überspannungsableiter und Verfahren zur Montage eines Überspannungsableiters
PCT/EP2019/055544 WO2019174989A1 (fr) 2018-03-14 2019-03-06 Parafoudre et procédé de montage d'un parafoudre

Publications (1)

Publication Number Publication Date
EP3766086A1 true EP3766086A1 (fr) 2021-01-20

Family

ID=65951527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19713709.4A Pending EP3766086A1 (fr) 2018-03-14 2019-03-06 Parafoudre et procédé de montage d'un parafoudre

Country Status (5)

Country Link
US (1) US11120929B2 (fr)
EP (1) EP3766086A1 (fr)
CN (1) CN111868851B (fr)
DE (1) DE102018203893A1 (fr)
WO (1) WO2019174989A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07254503A (ja) * 1994-03-16 1995-10-03 Ngk Insulators Ltd 耐雷ホーンの耐圧絶縁筒及び同耐圧絶縁筒に対する電極金具の接合構造及び接合方法
SE504075C2 (sv) * 1994-08-29 1996-11-04 Asea Brown Boveri Ventilavledare
US5680289A (en) * 1996-06-27 1997-10-21 Raychem Corporation Surge arrester
DE19940939C1 (de) * 1999-08-23 2001-07-19 Siemens Ag Überspannungsableiter mit einem Verspannelement
DE202005008111U1 (de) * 2005-05-24 2005-08-04 Tridelta Überspannungsableiter Gmbh Überspannungsableiter mit Rohr-Design
DE102005024206B4 (de) * 2005-05-25 2007-03-15 Tridelta Überspannungsableiter Gmbh Überspannungsableiter mit Käfig-Design
DE102006003576B4 (de) * 2006-01-25 2007-10-25 Tridelta Überspannungsableiter Gmbh Überspannungsableiter mit Käfig-Design
JP2013115251A (ja) * 2011-11-29 2013-06-10 Mitsubishi Electric Corp 避雷器
DE102011088072A1 (de) * 2011-12-09 2013-06-13 Siemens Aktiengesellschaft Überspannungsableiter
JP2013229362A (ja) * 2012-04-24 2013-11-07 Toshiba Corp ポリマー避雷器
CN105825986A (zh) * 2016-05-12 2016-08-03 安徽尚途电力保护设备有限公司 一种35kV户外交流防爆避雷器
WO2018002966A1 (fr) * 2016-06-30 2018-01-04 株式会社 東芝 Parafoudre en polymère et procédé de fabrication de celui-ci

Also Published As

Publication number Publication date
DE102018203893A1 (de) 2019-09-19
US20210005363A1 (en) 2021-01-07
CN111868851A (zh) 2020-10-30
CN111868851B (zh) 2022-07-01
WO2019174989A1 (fr) 2019-09-19
US11120929B2 (en) 2021-09-14

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