EP1292481A1 - Circuit de voie maille - Google Patents

Circuit de voie maille

Info

Publication number
EP1292481A1
EP1292481A1 EP01919191A EP01919191A EP1292481A1 EP 1292481 A1 EP1292481 A1 EP 1292481A1 EP 01919191 A EP01919191 A EP 01919191A EP 01919191 A EP01919191 A EP 01919191A EP 1292481 A1 EP1292481 A1 EP 1292481A1
Authority
EP
European Patent Office
Prior art keywords
track circuit
circuit according
base plate
meshed
housing
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
Application number
EP01919191A
Other languages
German (de)
English (en)
Other versions
EP1292481B1 (fr
Inventor
Peer Bohlmann
Bernd Raschke
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 AG
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 EP1292481A1 publication Critical patent/EP1292481A1/fr
Application granted granted Critical
Publication of EP1292481B1 publication Critical patent/EP1292481B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/044—Broken rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning

Definitions

  • the invention relates to a tone-frequency meshed track circuit according to the preamble of claim 1.
  • a track circuit is known from DE 32 35 283 C2.
  • Faulty vacancies of a track section are prevented in that the receivers of the track circuit detect the alternating frequency signal fed in for vacant and occupied messages, the vacant announcement of the track section then being made dependent on both the voltage and the current of the alternating frequency signal exceeding predetermined values.
  • the object of the present invention is to design a meshed track circuit according to the preamble of patent claim 1 so that when the rail breaks with a galvanic separation, an occupancy message is sent to the track circuit.
  • H. A broken rail is also detected in the earth rail.
  • the invention solves this problem by the features of claim 1.
  • high-resistance chokes in the meshing of a neutral rail ensures that only the slightest track currents can reach the track circuit receiver unintentionally via the additional neutral conductor (s).
  • the particular advantage of the meshed track circuit according to the invention is that the chokes used do not have to be individually matched to the different frequencies of the signal currents used in the adjacent track sections, but that their filter characteristics can be designed such that they flow all possible over the additional conductors Vaporize the track circuit signal currents in such a way that it is no longer possible to respond to the respective track circuit receiver. This makes it possible to inexpensively manufacture the chokes provided according to the invention in large numbers and to use them as desired.
  • the conductors of the chokes provided according to the invention should consist of a copper or aluminum alloy. Conductors designed in this way have the necessary conductivity to conduct the relatively high drive reverse currents with almost no loss with a limited conductor cross section; they can also be edited well, e.g. B. wrap or cut.
  • the conductor can be designed as a copper cable, as is to be used for the connection of the chokes to the neutral rail and the additional neutral conductor; the conductor can also consist of several correspondingly thinner conductors.
  • the choke winding can advantageously consist of one or more copper cables laid in several turns, the z. B. is to be fixed in a dimensionally stable manner via cable ties and is to be fastened on a base plate in this state.
  • the choke winding can be fitted into the core parts that have not yet been fully assembled and also to be fixed on the base plate.
  • the cores can be assembled and z. B. can be fixed by means of clamping screws on the base plate. At least some of the cable ties can be additionally fixed to fix the choke winding on the base plate.
  • the cores can advantageously be provided with corresponding air gaps.
  • a pot-like housing can be placed over the fully assembled throttle, which mechanically protects the elements of the throttle from the outside, and the housing can be closed watertight by the base plate with the elements of the throttle installed thereon, expediently the housing for contacting the base plate with a circumferential seal is to be provided.
  • the base plate and / or the housing are preferably made of a metallic material, e.g. B. aluminum.
  • Chokes are “electrically isolated” from the base plate. respectively.
  • the base plate can advantageously be provided with an earthing clamp and it is also to be advantageously provided with a locating pin for mounting on a track-side housing foot.
  • Fixing the track throttle and its connections in the housing, the free space remaining inside the housing is advantageously to be taken up by a casting resin or an assembly foam. to fill.
  • This assembly foam provides mechanical as well as
  • Heat dissipation to the base plate and the housing wall it can be permeated with thermally conductive particles in a known manner.
  • FIG. 1 shows schematically in FIG. 1 the structure of a meshed track circuit designed in accordance with the present invention
  • FIG. 2 a top view of a choke provided in accordance with the invention
  • FIG. 3 a side view of a ferromagnetic core as seen in several in FIG. 2 in top view can be seen in
  • FIG. 5 shows the electrical connection of one end of the choke winding and in FIG. 6 a device for grounding the base plate carrying the choke.
  • Figure 1 shows schematically the rails 1 and 2 of a track.
  • This track is divided by S-shaped rail connectors SV1 and SV2 into adjacent track sections Gl, G2 and G3, each of which is to be monitored for its free and occupied status by an associated track circuit.
  • the track circuit assigned to the track section G2 consists of a transmitter S arranged at one end of the track circuit, a tuning assembly BG1 and the rail connector SV1, tracks 1 and 2 and the rail connector SV2 located at the other end of the track circuit, a tuning module BG2 and a receiver E.
  • the tuning modules BG1 and BG2 are matched to the signal frequency of the track circuit to be monitored; this differs from the signal frequencies in the adjacent track sections.
  • the receiver E As long as the receiver E receives a sufficiently high level of the signal current from the transmitter S, it reports the associated track circuit freely. When the track circuit is occupied, the wheel sets of the vehicles that have entered the track section short the two rails of the track circuit, as a result of which the signal level available at the receiver falls below the predetermined threshold value. The receiver then reports that the track circuit is occupied. A occupancy message is also triggered when at least one rail is interrupted, indicated schematically in the drawing by an assumed rail break SB in rail 1.
  • the traction reverse currents in the order of a few 100 A also flow via the rails.
  • the rail connectors SV1 and SV2 are to be designed, via which the drive return currents in the individual track sections sym - be metered.
  • One of the rails forms the so-called zero rail, the other the power rail.
  • the rail 1 forms the zero rail and the rail 2 the busbar of the system.
  • the zero rail In order to avoid the potential arising at the high drive return currents on parts of the zero rail that are at a distance from one another To keep differences as small as possible, the zero rail is often connected to additional zero rails of adjacent tracks or to separate earth rails or earth cables.
  • the effect described at the outset can occur that, despite the interrupted zero rail, the track circuit receiver E receives a signal level which is sufficiently high for its response.
  • a throttle Drl, Dr2 is connected to each meshing point of the track circuit shown, via which at least part of the traction reverse current of the zero rail 1 and at least part of the track circuit signal current are connected to at least one additional neutral conductor N. is derived.
  • the chokes are low-resistance for the traction return currents that are relatively low-frequency compared to the signal currents and only dampen the signal currents that are higher-frequency in comparison in a noteworthy manner.
  • FIGS. 2 to 6 show details of a throttle used in accordance with the invention in its optimized form adapted to the intended application.
  • FIG. 2 shows the top view of the throttle according to the invention.
  • This consists essentially of a z. B. made from a copper rope winding 3 with several superimposed and e.g. in two layers of adjacent turns 33.
  • This winding can be produced by winding the copper cable onto a preferably cylindrical shaped body (not shown in the drawing), the winding being fixed inherently stable by cable ties 4 after being wound on the shaped body.
  • the choke winding 3 is provided with a plurality of ferromagnetic cores 7, which radially wrap around the windings 33 of the choke winding. Details of the ferromagnetic cores can be found in FIG. 3.
  • Each ferromagnetic core consists of several partial cores, in the present example two U-shaped core parts 71, 72 and two I-shaped parts 73 and 74 made of ferrite or sintered material.
  • the lower U-shaped partial core 71 lies isolated on a flat, preferably metallic base plate 8 on which the throttle is to be fixed overall.
  • the choke winding stabilized via the cable ties 4 is inserted between the legs of the U-shaped partial core 71. Then the I-shaped core parts 73 and 74 are placed and this arrangement - if necessary. with the insertion of one or more air gaps - covered by the upper core part 72. A pressure plate 75 and clamping screws 76, 77 are used to Order then mechanically fixed to the base plate 8. The winding 3 of the choke guided with play in the ferromagnetic cores 7 can now also be fastened to the base plate 8 by means of special cable ties 5. The additional cable ties are attached using screws 9 and 10.
  • a pot-like housing 11 shown in FIG. 4 is used for the mechanical protection of the throttle used in accordance with the invention.
  • This housing 11 is to be closed by its base plate 8 from its opening side, which is at the bottom in the installed position, a circumferential seal advantageously being embedded in the housing edge against which the base plate 8 creates.
  • Base plate 8 and housing 11 preferably consist of a metal, in particular an aluminum alloy.
  • Each bolt consists of a metallic, electrically highly conductive material such as B. copper, which is electrically isolated through electrically insulating bushings and inserted washers 22 through the base plate.
  • the washers 22 have no contact with the bolt 20.
  • At one end of the bolt there is a threaded pin on which the one winding end is to be fastened via an eyelet 23 attached there.
  • the other end of the bolt 20, which protrudes from the base plate on the side facing away from the housing, is provided with a transverse bore 24, via which a contacting cable, not shown in the drawing, for connection to the neutral rail or the further neutral conductors can be connected.
  • the base plate 8 is also provided with a grounding bolt 30, which can be seen in FIG. 6, and this is connected to the base plate 8 in an electrically conductive manner via a screw connection 31.
  • the bolt 30 protrudes from the group plate 8 on the side opposite the housing and carries at its freely accessible end an earth clamp 32 for connecting an earth connector.
  • the base plate is provided with a screwed-on mounting pin 40, by means of which the base plate 8 and with it the throttle and the housing 11 can be fastened in isolation to a housing foot on the track side.
  • the choke used according to the invention is cast in the housing by the manufacturer or filled with a construction foam.
  • the mass introduced into the housing serves for the mechanical fixation of the individual throttle components and it also serves for heat dissipation via the surface of the housing and the base plate.
  • the fully installed choke is connected on-site to the connecting cables provided for this purpose and attached to the housing base next to the track.
  • the chokes used after the induction can be used to intermesh any track circuit without the need for a special adaptation of their components to the signal frequency used for the track circuit in question.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

Selon l'invention, dans un circuit de voie maillé, d'éventuelles ruptures de rails (SB) risquent d'être masquées par le maillage. L'invention vise à effectuer les maillages par l'intermédiaire de bobines de choc (dr1,Dr2) qui sont de basse impédance pour le courant de retour de traction, mais d'impédance si élevée pour le courant de signaux du circuit de voie concerné, qu'une réponse inexacte du récepteur de circuit de voie (E) en cas de rupture de rail (1) n'est plus possible par l'intermédiaire d'un conducteur neutre (N) supplémentaire. Il n'est plus nécessaire d'adapter individuellement la caractéristique de filtrage des bobines de choc aux fréquences des signaux des circuits de voie. Les bobines de choc sont à bande si large qu'elles atténuent suffisamment intensément les fréquences des signaux de tous les circuits de voie d'une installation ferroviaire.
EP01919191A 2000-04-28 2001-03-07 Circuit de voie maille Expired - Lifetime EP1292481B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000122636 DE10022636A1 (de) 2000-04-28 2000-04-28 Vermaschter Gleisstromkreis
DE10022636 2000-04-28
PCT/DE2001/000945 WO2001083281A1 (fr) 2000-04-28 2001-03-07 Circuit de voie maille

Publications (2)

Publication Number Publication Date
EP1292481A1 true EP1292481A1 (fr) 2003-03-19
EP1292481B1 EP1292481B1 (fr) 2006-05-24

Family

ID=7641366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01919191A Expired - Lifetime EP1292481B1 (fr) 2000-04-28 2001-03-07 Circuit de voie maille

Country Status (8)

Country Link
EP (1) EP1292481B1 (fr)
CN (1) CN1250419C (fr)
DE (2) DE10022636A1 (fr)
DK (1) DK1292481T3 (fr)
ES (1) ES2264684T3 (fr)
HK (1) HK1056151A1 (fr)
NO (1) NO20025183L (fr)
WO (1) WO2001083281A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1348608A1 (fr) * 2002-03-27 2003-10-01 Alstom Belgium S.A. Procédé et installation pour la detection d'un bris de rail
US7954770B2 (en) * 2006-12-15 2011-06-07 General Electric Company Methods and system for jointless track circuits using passive signaling
DE102008038494A1 (de) 2008-08-20 2010-02-25 Hochschule Offenburg Verfahren und Vorrichtung zur Gleisnebenschlusserzeugung durch Bahnfahrzeuge
CN103832293B (zh) * 2014-02-28 2017-07-14 邹梓晗 用于铁路电气化区段的牵引回流平衡装置及其方法
CN108362930A (zh) * 2018-04-23 2018-08-03 广州铁路科开制造有限公司 轨道电流分离装置、牵引电流校验及轨面短路判断方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB218826A (en) * 1923-06-23 1924-07-17 Automatic Telephone Mfg Co Ltd Improvements in or relating to impedance bonds for use in railway signalling systems
AU6888181A (en) * 1980-04-08 1981-10-15 Gec-General Signal Ltd. Broken power rail detection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0183281A1 *

Also Published As

Publication number Publication date
CN1250419C (zh) 2006-04-12
ES2264684T3 (es) 2007-01-16
DK1292481T3 (da) 2006-09-11
NO20025183D0 (no) 2002-10-28
DE50109884D1 (de) 2006-06-29
NO20025183L (no) 2002-12-23
EP1292481B1 (fr) 2006-05-24
HK1056151A1 (en) 2004-02-06
CN1426359A (zh) 2003-06-25
DE10022636A1 (de) 2001-10-31
WO2001083281A1 (fr) 2001-11-08

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