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WO2023285582A1 - Patin pour isolateur de sectionnement - Google Patents

Patin pour isolateur de sectionnement Download PDF

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Publication number
WO2023285582A1
WO2023285582A1 PCT/EP2022/069706 EP2022069706W WO2023285582A1 WO 2023285582 A1 WO2023285582 A1 WO 2023285582A1 EP 2022069706 W EP2022069706 W EP 2022069706W WO 2023285582 A1 WO2023285582 A1 WO 2023285582A1
Authority
WO
WIPO (PCT)
Prior art keywords
runner
blade
precipitation
hardenable
copper
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.)
Ceased
Application number
PCT/EP2022/069706
Other languages
German (de)
English (en)
Inventor
Lorenz Brönnimann
Micha Röllinghoff
Vincent RUNSER
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.)
ARTHUR FLURY AG
Original Assignee
ARTHUR FLURY 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 ARTHUR FLURY AG filed Critical ARTHUR FLURY AG
Priority to CN202280049266.8A priority Critical patent/CN117916122A/zh
Priority to EP22751675.4A priority patent/EP4370371A1/fr
Publication of WO2023285582A1 publication Critical patent/WO2023285582A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/18—Section insulators; Section switches

Definitions

  • the catenary network must supply the contact strip of the pantograph and thus the drive train of the locomotive with electricity without interruption.
  • a catenary system divided into sections is necessary for maintenance and the absorption of voltage differences.
  • section insulators such as those described in [Kiessling, F.; Puschmann, R.; Schmieder, A.: Contact lines of electric railways. Er Weg, publishing house Publicis Publishing,
  • the separator has so-called skids. These provide the electrical connection between the isolator and the pantograph contact strip and have a free end with a spark horn. Due to the increased contact forces already mentioned, which can hardly be avoided
  • the material In addition to good electrical conductivity, the material must also meet high mechanical requirements, such as abrasion resistance and vibration resistance.
  • the blade material commonly used today is copper ETP. This has good electrical conductivity and sufficient mechanical strength for many applications. Due to the contact pressure of the pantograph, however, the runners wear out quickly under certain conditions, which leads to increased maintenance costs.
  • Stellite® applications as they are known from power plant construction, would be well suited for this from a mechanical point of view. However, because of the high cobalt content, Stellite® has a very poor electrical conductivity of less than 2% IACS.
  • a drop-shaped runner profile is characterized, among other things, by the fact that it is convexly curved in cross section perpendicular to the axis on the underside, i.e. rounded off on the underside.
  • the mechanical properties of contact wires have also been improved in recent years.
  • the contact wire copper alloy with tin, silver and magnesium and the high degree of deformation used to produce the contact wire profile made it possible to greatly improve the contact wire's abrasion resistance even without precipitation hardening [EB 112 (2014) issue 4 / p 207 ff].
  • laboratory tests have shown that the properties of the contact wire cannot be transferred to the runner profile due to the lower degree of deformation during the production of the teardrop-shaped runner profile.
  • the known contact wire alloys soften at elevated operating temperatures due to recrystallization, as described for example in [EB 112 (2014) Issue 4 / p 207 ff]. Due to the sometimes unavoidable high current flow in the isolator, the skids can quickly reach operating temperatures of well over 100°C.
  • Precipitation hardenable non-ferrous metal alloys are used for certain applications. All metals in the periodic table except iron are called non-ferrous metals.
  • the precipitation-hardenable aluminum alloy duralumin has been known since the beginning of the 20th century. This is still used today in a further developed form in the vehicle and aircraft industry. Due to the possibility of precipitation hardening, the achievable hardness is largely independent of the degree of deformation and due to the high aluminum content, it has good electrical properties.
  • the pantograph exerts a stronger contact pressure on the skids than on the free contact wire. Even the usual higher suspension of the disconnector compared to the catenary, the so-called overheight, cannot completely prevent this.
  • the increased contact pressure and the unavoidable deviations in the position of the runners from the ideal setting sometimes lead to severe runner wear.
  • skids made of precipitation-hardenable non-ferrous metals are more wear-resistant than those according to the prior art.
  • the increased wear resistance means that the runners need to be replaced less often.
  • the ready-to-install runner material is preferably in the following condition: solution-annealed, cold-worked and precipitation-hardened, in accordance with EN DIN 12167:2016 for hardenable CuNiSi alloys.
  • the advantage of this state is that it is easily accessible in the production of innovative runners.
  • the runner can be shaped well for this purpose.
  • the skid material that is ready for installation preferably has an electrical conductivity of more than 17 MS/m, so that the heating caused by currents is not too great.
  • the hardness of the ready-to-install skid material is preferably greater than 160 HB in order to minimize wear from the contact strip.
  • the ready-to-install skid material preferably has a minimum yield point (Rpo.2) of 450 MPa so that mechanical stress peaks do not lead to unacceptable plastic deformations.
  • the precipitation-hardenable alloy preferably contains copper and nickel or copper and silicon, in particular copper, nickel and silicon (a CuNiSi alloy), preferably with 90-99 mass percent copper, 1-4 mass percent nickel and 0.3-3 mass percent silicon.
  • the runner has, as is known, a drop-shaped profile, i.e. the profile is convexly curved on the underside in cross section perpendicular to the axis.
  • the blade has a spark horn, i.e. a protruding horn, via which a discharge through the air takes place in the event of an overvoltage.
  • the invention also relates to a section insulator for overhead lines for electrical rail vehicles.
  • the section insulator has two runners that are electrically isolated from one another and that can each be connected to a catenary. At least one of them, for example both, is/are a runner of the type according to the invention described above.
  • one of the runners can be longer than the other.
  • the runners are arranged in such a way that they overlap in the direction of travel of the electric rail vehicle.
  • the runners can each have an inlet that can be connected to the catenary and/or a spark horn at the opposite, free end.
  • the runners can have slots or other means, for example an eccentric, for adjusting the height and/or the inclination.
  • FIG. 1 shows a separator with the skid according to the invention.
  • Figure 2 shows the isolator in connection with the pantograph and the locomotive.
  • FIGS. 3a and 3b show the runner according to the invention.
  • the inventive runners (2a, 2b) should preferably be able to be used as replacement parts in conjunction with the existing separators (1).
  • the spark horns (5) are used to allow any arc to rise and to extinguish it via the increasing air gap (6).
  • the height of the runners (2a, 2b) can be adjusted with the aid of elongated holes (7), as shown for example in FIGS. 3a and 3b. Instead of the elongated holes (7) and the fastening screws (8), an adjustment via an eccentric, not shown, would also be conceivable.
  • pantograph (11) contact strip (12) is in poor condition.
  • the blade material according to the invention is of particular importance.
  • a precipitation-hardenable non-ferrous metal alloy can be used as the blade material. All metals in the periodic table except iron are called non-ferrous metals.
  • Non-ferrous metal alloys are therefore alloys of non-ferrous metals that do not contain any significant ( ⁇ 10%) proportion of iron.
  • the main component, based on the mass, of the non-ferrous metal alloy according to the invention is a heavy metal and belongs to the group of non-ferrous metals.
  • the term heavy metal includes non-ferrous metals and their alloys with a density >5g/cm 3 .
  • Non-ferrous metal is a collective term for a subgroup of heavy metals excluding precious metals.
  • the precipitation-hardenable non-ferrous metal alloy could consist, for example, of the essential components copper, nickel and silicon. In addition to the main component copper and the usual impurities, 1-4% by mass nickel and 0.3-3% by mass silicon are included. Such alloys are also known for the production of electrical connection material. As this is usually about

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

L'invention concerne un patin à faible usure pour un isolateur de sectionnement destiné à réduire les dépenses d'entretien. L'objectif est que le patin soit compatible, en tant que pièce de rechange, avec des isolateurs de sectionnement existants. Afin d'augmenter la résistance à l'usure, le patin selon l'invention est composé d'un alliage de métal non ferreux durcissable par précipitation. Alors que les matériaux de cuivre connus en tant que matériaux de patin et de ligne de contact présentent une température de fonctionnement maximale définie dans la norme EN 50119:2020 en conséquence de la recristallisation, une dissolution complète des précipités par recristallisation n'a pas pu être détectée dans le patin selon l'invention jusqu'à une température à court terme de 700 °C.
PCT/EP2022/069706 2021-07-16 2022-07-14 Patin pour isolateur de sectionnement Ceased WO2023285582A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280049266.8A CN117916122A (zh) 2021-07-16 2022-07-14 用于分段绝缘体的滑板
EP22751675.4A EP4370371A1 (fr) 2021-07-16 2022-07-14 Patin pour isolateur de sectionnement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH070066/2021 2021-07-16
CH70066/21A CH718835A1 (de) 2021-07-16 2021-07-16 Kufe für einen Streckentrenner.

Publications (1)

Publication Number Publication Date
WO2023285582A1 true WO2023285582A1 (fr) 2023-01-19

Family

ID=82846491

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/069706 Ceased WO2023285582A1 (fr) 2021-07-16 2022-07-14 Patin pour isolateur de sectionnement

Country Status (4)

Country Link
EP (1) EP4370371A1 (fr)
CN (1) CN117916122A (fr)
CH (1) CH718835A1 (fr)
WO (1) WO2023285582A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027406A1 (de) * 1980-04-15 1981-10-22 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Vorrichtung zum zugfesten, elektrisch isolierenden verbinden von zwei abschnitten des fahrdrahtes einer oberleitung
DD288180A5 (de) 1989-09-28 1991-03-21 Veb Halbzeugwerk Auerhammer "Albert Funk",De Verfahren zur herstellung einer hochleitfaehigen aushaertbaren kupferlegierung
DE102010051379A1 (de) * 2010-11-16 2012-05-16 Furrer + Frey Ag Streckentrenner
WO2014002998A1 (fr) 2012-06-25 2014-01-03 合同会社バイオエンジニアリング研究所 Électrode enzymatique
WO2014029798A2 (fr) 2012-08-22 2014-02-27 Swissmetal - Ums Schweizerische Metallwerke Ag Alliages de cuivre usinables pour connecteurs électriques

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027406A1 (de) * 1980-04-15 1981-10-22 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Vorrichtung zum zugfesten, elektrisch isolierenden verbinden von zwei abschnitten des fahrdrahtes einer oberleitung
DD288180A5 (de) 1989-09-28 1991-03-21 Veb Halbzeugwerk Auerhammer "Albert Funk",De Verfahren zur herstellung einer hochleitfaehigen aushaertbaren kupferlegierung
DE102010051379A1 (de) * 2010-11-16 2012-05-16 Furrer + Frey Ag Streckentrenner
WO2014002998A1 (fr) 2012-06-25 2014-01-03 合同会社バイオエンジニアリング研究所 Électrode enzymatique
WO2014029798A2 (fr) 2012-08-22 2014-02-27 Swissmetal - Ums Schweizerische Metallwerke Ag Alliages de cuivre usinables pour connecteurs électriques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KIESSLING, F.PUSCHMANN, R.SCHMIEDER, A.: "Erlangen", 2014, VERLAG PUBLICIS PUBLISHING, article "Fahrleitungen elektrischer Bahnen"

Also Published As

Publication number Publication date
CH718835A1 (de) 2023-01-31
CN117916122A (zh) 2024-04-19
EP4370371A1 (fr) 2024-05-22

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