CN2758143Y

CN2758143Y - 25HZ rail circuit device having phase angle regulating function

Info

Publication number: CN2758143Y
Application number: CN 200420092057
Authority: CN
Inventors: 张文
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-10
Filing date: 2004-11-10
Publication date: 2006-02-15
Anticipated expiration: 2014-11-10

Abstract

The utility model relates to a 25HZ track circuit device with phase angle regulating function, which is composed of a transmitting circuit, a railway steel rail and a receiving circuit, wherein the transmitting circuit comprises a step-down transformer B<1> which is positioned in an outdoor XB <1> box, a step-down resistance R and a choke transformer; the receiving circuit comprises a choke transformer, a step-up transformer B <2> which is positioned in the outdoor XB <1> box, and a track relay JRJC; the ends (3), (4) of track coils of the track relay JRJC are connected in parallel with a phase angle regulating circuit XJT. The utility model has the advantages that the utility model is convenient to regulate the phase angle of the track electric appliance to make the track circuit work in optimum state; the resistance to the unbalanced current is improved; because the series resonant circuit resonates at the 50HZ propulsion current, the utility model has a short circuit effect on 50HZ propulsion current.

Description

Have the phase angle and adjust the 25HZ track circuit device of function

Technical field

The utility model relates to a kind of 25HZ track circuit device that function is adjusted at the phase angle that has, and belongs to the 25HZ track circuit that railway signal interlocking is used.

Background technology

At present, the 25HZ track circuit (referring to Fig. 2) that uses on the railway, it is made up of transtation mission circuit, railway track 1, acceptor circuit, and the mouth of transtation mission circuit connects the input end of acceptor circuit through railway track.Transtation mission circuit is by step-down transformer B ₁, dropping resistor R, impedance transformer BE ₁Form step-down transformer B ₁Be contained in outdoor XB with dropping resistor R ₁In the case; Acceptor circuit is by impedance transformer BE ₂, step-up transformer B ₂, selenium pile Z, protection box HF (protection box in is the series resonant circuit of forming by capacitor C and inductance L, series resonant circuit is in parallel with 3,4 ends of the track coil of track relay JRJC), track relay JRJC and capacitor C ₉Form step-up transformer B ₂Be contained in outdoor XB ₂In the case.The working process of above-mentioned track circuit is as follows: confess 25HZ, 220V source of AC by indoor unification, arrive in the XB1 case of track circuit feed end the step-down transformer B in it ₁After the step-down, deliver to impedance transformer BE after the resistance R current limliting ₁4,5 ends of signal coil, again through impedance transformer BE ₁Hauling-

eye

1,2 be connected to railway track, after the railway track transmission, arrive the impedance transformer BE of

acceptor circuit

₂1,2 ends of hauling-eye, after transformation by impedance transformer BE ₂4,5 ends of signal coil deliver to acceptor circuit XB ₂Case in step-up transformer B ₂, through the voltage transformer indoor track relay JRJC of rear drive that boosts.Above-mentioned track circuit shortcoming is as follows: the phase angle on (1) track circuit relay J RJC can not be adjusted, the phase angle that out of reach The Ministry of Railway of the People's Republic of China, MOR " signal maintenance rule " technical standard requires: JRJC-66/345 type track relay requires 90 ° ± 8 ° of railway voltage hysteresis local voltage, and JRJC-70/240 type track relay requires 87 ° ± 8 ° of railway voltage hysteresis local voltage.(2) 25HZ track circuit Chinese People's Anti-Japanese Military and Political College traction unbalanced current has only 60A, can cause track circuit to dodge red fault when traction current is big and burns out track circuit equipment.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of a kind of 25HZ track circuit device with phase angle adjustment function that can make track circuit be operated in optimum regime and improve the anti-unbalance current value greatly.

The technical scheme that its technical matters that solves the utility model adopts:

The utility model is made up of transtation mission circuit, railway rail, acceptor circuit, and the mouth of transtation mission circuit connects the input end of acceptor circuit through railway track, and transtation mission circuit includes and is positioned at outdoor XB ₁Step-down transformer B in the case ₁With dropping resistor R, impedance transformer; Acceptor circuit includes impedance transformer, is positioned at outdoor XB ₂Step-up transformer B in the case ₂, track relay JRJC; It is characterized in that 3,4 ends at the track coil of track relay JRJC are parallel with the phase angle and adjust circuit XJT, circuit XJT is adjusted by composing in parallel with the electric capacity more than 6 after connection terminal is connected respectively in the phase angle again.

Impedance transformer BEJ in the utility model transtation mission circuit and the acceptor circuit ₁, BEJ ₂The number of turn of 4,6 ends of signal coil be 640 circles, the number of turn of 1,2 ends of hauling-eye is 16 circles, its signal coil is provided with tap 5, the number of turn of 4,5 ends of its signal coil is 48 circles; Impedance transformer BEJ ₁4,5 ends of signal coil meet step-up transformer B through dropping resistor R ₁Secondary, chokes transformation BEJ ₂4,5 termination step-up transformer B of signal coil ₂Elementary; Impedance transformer BEJ ₁And BEJ ₂4,6 ends of signal coil be parallel with the series resonant circuit of forming by inductance and electric capacity respectively, the resonant frequency of series resonant circuit is 50HZ.

In Fig. 1,2, RD ₁-RD ₄Be fuse.

The beneficial effects of the utility model are as follows: (1) can conveniently adjust the phase angle of track relay, makes track circuit be operated in optimum regime, improves the reliability of signalling set; (2) can actv. filtering high-frequency interferencing signal; (3) can improve the anti-unbalance current value greatly, the anti-unbalance electric current reaches 400A; Because the string resonance is on the 50HZ traction current, it plays the short circuit effect to the 50HZ traction current, play compensating action thereby on the one hand 25HZ track circuit 25HZ signal is capacitive, can reduce electric current on the cable that send electric loop on the other hand and promptly reduce pressure drop on the cable.

Description of drawings

Fig. 1 is schematic circuit diagram of the present utility model

Fig. 2 is the schematic circuit diagram of the present 25HZ track circuit that uses

The specific embodiment

By embodiment shown in Figure 1 as can be known, it is made up of transtation mission circuit, railway rail, acceptor circuit, and the mouth of transtation mission circuit connects the input end of acceptor circuit through railway track, and transtation mission circuit includes and is positioned at outdoor XB ₁Step-down transformer B in the case ₁With dropping resistor R, impedance transformer; Acceptor circuit includes impedance transformer, is positioned at outdoor XB ₂Step-up transformer B in the case ₂, track relay JRJC; It is characterized in that 3,4 ends at the track coil of track relay JRJC are parallel with the phase angle and adjust circuit XJT, circuit XJT is adjusted by composing in parallel with the electric capacity more than 6 after connection terminal is connected respectively in the phase angle again.

Impedance transformer BEJ in the utility model transtation mission circuit and the acceptor circuit ₁, BEJ ₂4,6 end turn numbers of signal coil be 640 circles, the number of turn of 1,2 ends of hauling-eye is 16 circles, its signal coil is provided with tap 5, the number of turn of 4,5 ends of its signal coil is 48 circles; Impedance transformer BEJ ₁4,5 ends of signal coil meet step-up transformer B through step-down dropping resistor R ₁Secondary, chokes transformation BEJ ₂4,5 termination step-up transformer B of signal coil ₂Elementary; Impedance transformer BEJ ₁And BEJ ₂4,6 ends of signal coil be parallel with the series resonant circuit of forming by inductance and electric capacity respectively, with impedance transformer BEJ ₁The series resonant circuit of 4,6 end parallel connections of signal coil by capacitor C ₁And inductance L ₁Form; With impedance transformer BEJ ₂The series resonant circuit of 4,6 end parallel connections of signal coil by capacitor C ₂And inductance L ₂Form; The resonant frequency of series resonant circuit is 50HZ.

In the present embodiment, the electric capacity of phase angle demodulation circuit XJT is 6, i.e. C ₃-C ₈, C ₃Be 0.47 μ F, C ₄-C ₈Be followed successively by 1 μ F, 2 μ F, 4 μ F, 8 μ F, 16 μ F.

In Fig. 1,2, RD ₁-RD ₄Be safety fuse.

The existing 25HZ track circuit of Shi Yonging, the phase angle of track relay can not be adjusted, according to the requirement in The Ministry of Railway of the People's Republic of China, MOR's " signal maintenance rule ", phase angle on the 25HZ track circuit relay J RJC-66/345 type track relay, require 90 ° ± 8 ° of railway voltage hysteresis local voltage, phase angle on the JRJC-70/240 type track relay requires 87 ° ± 8 ° of railway voltage hysteresis local voltage.And in fact, the length difference of each track circuit, leak resistance difference, i.e. the transmission parameter difference of each track circuit section, cause the phase angle of the voltage delay local voltage on the track relay the not meet requirement of " signal maintenance rule ".

In fact, existing standard 25HZ track circuit track integral body is perception, and the capacitance of circuit XJT is adjusted at the phase angle that is connected in parallel on the track coil two ends of track relay by adjustment, makes that track circuit is whole to send voltage and to accept voltage-phase identical.Just lag behind 90 ° of local voltage of former transmission voltage so just guarantee that the voltage that receives on the track relay also lags behind 90 ° of local voltage, can satisfy the technical requirements of " signal maintenance rule ".

Present embodiment is to change the capacitance at the track coil two ends that are connected in parallel on track relay by connecting the difference reception terminal of adjusting among the circuit XJT at the phase angle (for example the connection terminal among Fig. 1 11 being connected with 12), thereby reaches the purpose that changes the phase angle.

Claims

1, a kind of have a 25HZ track circuit device that function is adjusted at the phase angle, and it is made up of transtation mission circuit, railway rail (1), acceptor circuit, and the mouth of transtation mission circuit connects the input end of acceptor circuit through railway track (1), and transtation mission circuit includes and is positioned at outdoor XB ₁Step-down transformer B in the case ₁With dropping resistor R, impedance transformer; Acceptor circuit includes impedance transformer, is positioned at outdoor XB ₂Step-up transformer B in the case ₂, track relay JRJC; It is characterized in that being parallel with the phase angle at (3,4) of the track coil of track relay JRJC end adjusts circuit XJT, circuit XJT is adjusted by composing in parallel with the electric capacity more than 6 after connection terminal is connected respectively in the phase angle again.

2, the 25HZ track circuit device with phase angle adjustment function according to claim 1 is characterized in that the impedance transformer BEJ in transtation mission circuit and the acceptor circuit ₁, BEJ ₂The number of turn of (4,6) end of signal coil be 640 circles, the number of turn of (1,2) of hauling-eye end is 16 circles, its signal coil is provided with tap (5), the number of turn of (4,5) end of its signal coil is 48 circles; Impedance transformer BEJ ₁Signal coil (4,5) end meet step-up transformer B through dropping resistor R ₁Secondary, chokes transformation BEJ ₂(4,5) termination step-up transformer B of signal coil ₂Elementary; Impedance transformer BEJ ₁And BEJ ₂Signal coil (4,6) end be parallel with the series resonant circuit of forming by inductance and electric capacity respectively, the resonant frequency of series resonant circuit is 50HZ.