CN2626811Y - Checking apparatus for electrical isolation state of non-insulated track circuit - Google Patents
Checking apparatus for electrical isolation state of non-insulated track circuit Download PDFInfo
- Publication number
- CN2626811Y CN2626811Y CN 03260161 CN03260161U CN2626811Y CN 2626811 Y CN2626811 Y CN 2626811Y CN 03260161 CN03260161 CN 03260161 CN 03260161 U CN03260161 U CN 03260161U CN 2626811 Y CN2626811 Y CN 2626811Y
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- rail
- signal
- receiving
- electrical isolation
- circuit
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Abstract
The utility model relates to an uninsulated rail circuit inspection device for electrical isolation state, which comprises a main rail circuit and an electrical isolation circuit. The devices comprise an indoor part and outdoor part. The rail circuit in the section combines an electric tuning area and the receiving main rail as a rail circuit. A code sending circuit of BG rail delivers the code to sending box FSH, which outputs the signal to rail matching unit PB by a sending cable FDL after the enlargement of a power amplifier box GFH. The matching unit sends signal to both sides. One line is sent to the receiving unit in adjacent section through the electrical isolation area and the other line is sent to the receiving unit JS in the section by the main rail. The matching unit PB of the lateral rail of the receiving unit sends the reverse signal sent by AG and the main rail signal to the receiving unit JS through an isolation area, via a receiving cable JDL to a receiving wave filtering box LBH and then to the receiving box JSH, which outputs the rail circuit state by a receiving state indication unit ZTBS according to the extent change of the isolation area signal and the main rail signal. The utility model has advantages of novel design, simple component structure, no hardware device supplement, and software analysis processing utilization, and further realizes the device wire break fault inspection in electrical isolation area, with the steel rail break inspection and dead area length no more than 5 m, changes the three point arrangement structure of electrical isolation of French UM71 electrical isolation uninsulated rail circuit, realizes the design of electrical isolation device in five point arrangement structure, so as to improve the signal extent of reverse transmission voltage on receiving end.
Description
Affiliated field: the utility model relates to a kind of jointless track circuit electrical isolation state inspection apparatus.
Background technology: Fig. 1 sees from the UM71 electrical isolation formula jointless track circuit structure that France introduces in China.Track circuit branch " main orbit circuit " and " 26m electrical isolation district " two parts.Electrical isolation head of district 26m is used for the Signal Spacing of two adjacent sections, and Fig. 2 is seen in the equipment design in the electrical isolation district.Following problem is arranged on the safety: 1, the equipment disconnection fault does not influence the track circuit normal operation in the electrical isolation district, and both fault can not get checking.Under this faulty condition, exist the adjacent track circuit signal safety hazard of district's transmission more.2, the disconnected rail of rail in the electrical isolation district, because of isolated area Q of resonance circuit value is low, resonance impedance is also lower, can invar rail somewhere does not disconnect and influence the track circuit mode of operation, makes the rail that breaks in the isolated area not have inspection, has safety problem.3, electrical isolation district, during the shunt of 0.15 Ω shunt lead, because parallel resonance impedance is lower, receiver side makes the electrical isolation district that 20m dead section (promptly not checking along separate routes) be arranged in advance along separate routes apart from weak point, has safety hazard.
Summary of the invention: the purpose of this utility model provides a kind of realization electrical isolation district equipment disconnection fault that inspection, the disconnected rail inspection in electrical isolation district are arranged, and shortens electrical isolation district dead band length and electric tuning district and reception main orbit are combined into the jointless track circuit electrical isolation state inspection apparatus that a track circuit carries out status checking.The purpose of this utility model is achieved through the following technical solutions: the utility model is a kind of jointless track circuit electrical isolation state inspection apparatus, it comprises main orbit circuit and electrical isolation district circuit two parts composition, equipment is made up of indoor and outdoors two parts, this section track circuit is with electric tuning district and receive main orbit and be a track circuit: the transmission encode circuit BMQ of BG rail is to after sending box FSH coding, send the box output signal after power amplifier box GFH amplifies, through sending cable FDL, send into Orbit Matching unit PB, send signal by matching unit to the rail both sides, one the tunnel sends into adjacent area section receiving element through the electrical isolation district, this section receiving element JS is sent into through main orbit in another road, receiving element siding track matching unit PB sends into receiving element JS with the reverse signal that AG sends together through isolated area transmission and main orbit signal, through receive cable JDL to the box LBH that accepts filter to receiving box JSH, receiving box is represented unit ZTBS output with the track circuit state through receiving condition according to isolated area signal and the variation of main orbit signal amplitude, the receiving condition of AG rail represents that the output of ZTBS is connected to BG rail receiving box, as the trouble tracing condition of BG rail isolated area.The utility model designs novel electrical isolation plot structure and equipment and adopts 5 layouts, utilize the computational analysis of electrical isolation district forward, reverse transfer signal, realize the mode of operation and the security inspection of track circuit, square electrical isolation district and main orbit two parts in the signal protection are carried out status checking and move an execution relay as a track circuit section.When at a point has car to take, the equal red light protection of protection signal (dead band 5m).Have the following advantages compared with the prior art: 1) whole equipment constitutes simply, need not to increase hardware device, has utilized the software analysis processing.2) realize the equipment disconnection fault inspection of electrical isolation district, disconnected rail inspection of rail and dead band length are not more than 5 meters.The utility model has changed 3 layout structures of electrical isolation of French UM71 electrical isolation formula jointless track circuit, realized the design of 5 layout structures of electrical isolation equipment, signal amplitude with the reverse transfer voltage that improves receiving end, just realize, reverse transfer signal equipotential receives, that finishes the electrical isolation district takies cross-check sum equipment trouble tracing and the rail inspection of breaking, guarantee the safety of track circuit utilization, realize that electrical isolation district equipment disconnection fault has inspection, realize the disconnected rail inspection in electrical isolation district, shorten electrical isolation district dead band length, realization is not more than 5 meters, with electric tuning district with receive main orbit and be combined into a track circuit and carry out status checking.
Description of drawings:
Fig. 1 is UM71 the utility model constructional drawing
Fig. 2 is UM71 electrical isolation plot structure figure
Fig. 3 the utility model circuit connection structure figure
5 layouts in Fig. 4 the utility model electrical isolation district
The specific embodiment:
The utility model as shown in Figure 3 is a kind of jointless track circuit electrical isolation state inspection apparatus, it comprises main orbit circuit and electrical isolation district circuit two parts composition, equipment is made up of indoor and outdoors two parts, the main orbit circuit is with electric tuning district and receive main orbit and be a track circuit: the transmission encode circuit BMQ of BG rail is to after sending box FSH coding, send the box output signal after power amplifier box GFH amplifies, through sending cable FDL, send into Orbit Matching unit PB, send signal by matching unit to the rail both sides, one the tunnel sends into adjacent area section receiving element through the electrical isolation district, this section receiving element JS is sent into through main orbit in another road, receiving element siding track matching unit PB sends into receiving element JS with the reverse signal that AG sends together through isolated area transmission and main orbit signal, through receive cable JDL to the box LBH that accepts filter to receiving box JSH, receiving box will be represented ZTBS output in unit with the track circuit state through receiving condition according to isolated area signal and the variation of main orbit signal amplitude, the receiving condition of AG rail represents that the output of ZTBS is connected to BG rail receiving box, as the trouble tracing condition of BG rail isolated area.As shown in Figure 4, electrical isolation district circuit is 5 layout structure: BA1, BA2 connects with the rail Δ L1 on both sides, two PB are connected in parallel on Δ L1 and Δ L2 connection place respectively, SVA is placed in the middle of the Δ L, be connected in parallel on two Δ L2 connection places, constitute the electrical isolation district of 5 layouts, finish the transmission and the reception of signal by PB, BA1, BA2 and rail constitute electric resonant tank, finish the section of track circuit and isolate, and SVA finishes the backflow of traction current, send signal and be added in rail Δ L1 and Δ L2 connection place through PB, one the tunnel through Δ L1, BA1 sends into track circuit, and another road two rail Δs L2 is to receiving PB, and sends into reception facilities by receiving PB through receiving cable, finish the transmission of isolated area signal, receive main signal and send into receiver side PB, and deliver to reception facilities through receiving cable, finish the main signal transmission by PB through BA2 and Δ L1.
The implication of electrical equipment symbol in the present embodiment:
JDL---receives cable LBH---box JSH accepts filter---receiving box
FSH---sends box ZTBS---receiving condition is represented BMQ---and sends coder
GFH---power amplifier box FDL---generating cable PB---Orbit Matching network
SVA---backflow coil BA1---tuned cell 1 BA2---tuned cell 2
C1～Cn---track building-out capacitor JS_ receiving element, FS_ transmitting element
DGLQ---electrical isolation district (in the cabinet)
The utility model principle of work
1. send signal and sending the positive and negative both direction transmission of rail level
During the utility model work, send box and export corresponding frequency-shift signaling through inter-process, amplify, export interval cable box to and be connected, deliver to track through the Orbit Matching unit with external cable through the power amplifier box according to the outward sign encoding condition.And by track respectively to both direction transmission, forward signal is transmitted in the receiving end of this section through main orbit, reverse signal transfers to the receiving end of adjacent sections through the electrical isolation district.
2. receive the signal of the positive and negative both direction transmission of rail level
Enter filtering box through the signal of this section of main orbit transmission with through isolated area reverse transfer to the signal of the positive and negative both direction of receiving end through Orbit Matching unit, cable, the interval cable box of receiving end, export through two-way filter, the signal of main orbit signal and isolated area reverse transfer is delivered to the double frequency shift data trap of receiving box respectively, picking up through inter-process decoding output action track relay is that receiving condition is represented, lights the wayside signaling lamp.When car took, receiving box can not receive signal and no-output falls track relay, wayside signaling lamp point red light.
3. the formation of isolated area: tuned cell BA1, the BA2 on both sides, electrical isolation district, transmission and this section received signal to the rear section constitutes a zero point and a limit respectively, a traction current coil SAV. is arranged at two tuned cell BA1 in the middle of the electrical isolation district, the inboard of BA2, and apart from having of two BA equal distance placement transmission and received signal Orbit Matching network PB.Seeing Fig. 4, is that limit is zero point to received signal at the BA1 of transmitter side to sending signal, is to be zero point limit to received signal at the BA2 of receiver side to sending signal.And the frequency that receives and send signal is arranged in a crossed manner.About 2 Ω of the limit impedance in electrical isolation district, the about 60m Ω of impedance at zero point, the isolation of adjacent sections signal is to isolate by the short circuit effect realization of zero impedance, with the district more of protection adjacent area segment signal.BA and PB are placed apart, are to utilize the pressure drop of the rail impedance of the segment distance between them to improve adjacent area segment signal reception amplitude.The signal conditioning of electrical isolation zone state inspection is provided for reception facilities.
4. the isolated area train occupation is checked and the BA broken string, disconnected rail trouble tracing method
Carry out the isolated area status checking by the software detection isolated area reverse signal of reception facilities and the variation of this section forward signal, and with the reverse signal of isolated area entry condition as status checking, action necessary condition with the variation of this section signal is checked as isolated area realizes the inspection of isolated area state.For train occupation cross-check sum BA broken string is just reached disconnected rail inspection separately, utilize rear section idle condition to see Fig. 6 as the starting conditions of the BA broken string and the rail trouble tracing that breaks.
Concrete grammar is as follows:
(1), the isolated area trouble tracing in two kinds of situation: the rail inspection of breaking of BA continuity test and isolated area, these two kinds of trouble tracings are finished when section is idle in the wings.
1, the inspection of BA disconnection fault is in two kinds of situation: the one, and transmitter side BA broken string, a kind of is receiver side BA broken string.Under normal circumstances, reception facilities receives the oppositely directed signal of isolated area with fixed threshold, because it is very little that the isolated area both sides have the characteristic impedance of compensation track circuit to change when ballast resistance changes, make the reverse signal of isolated area not be subjected to the variable effect of both sides track circuit.When isolated area transmitter side BA breaks, destroyed parallel resonance, make to send side pole impedance forfeiture, cause the reduction of sendaisle loaded impedance, loss strengthens, and the transmitter side rail surface voltage descends, and makes to receive to isolate the also decline thereupon of section reverse signal.Be half of former adjustment state value approximately.The saltus step that this voltage descends provides transmitter side BA to detect entry condition to reception facilities.When disconnection fault appears in receiver side BA, because receiver side BA is a zero impedance to the reverse signal that isolated area sends, the isolated area reverse signal is not owing to there is the by-passing of zero impedance, the rail level isolated area reverse signal voltage of receiving end rises, the isolation section reverse signal that reception facilities receives also rises significantly, about adjusting more than 2 times of state value, the saltus step of isolating the rising of section reverse signal provides receiver side BA the detection entry condition of broken string for reception facilities connects greatly.Because both sides, electrical isolation district BA disconnection fault all can cause the impedance of receiver side main orbit limit to lose, cause the receiving cable impedance to reduce, main orbit signal sending allowance strengthens, and makes to receive the decline of main orbit signal.When reception facilities detects isolated area reverse signal change of voltage, when detecting simultaneously the decline of main orbit signal again, make to draw the conclusion that isolated area breaks down, and track relay is fallen, reach the purpose that isolated area BA disconnection fault is checked.This method than the saltus step of checking the isolated area reverse signal merely accurately and reliably.
2. the disconnected rail inspection of isolated area is the same with isolated area transmitter side BA disconnection fault phenomenon, has cut off isolated area reverse transfer signal by disconnected rail fault.Make the reverse signal voltage of receiver side isolated area drop to zero, reception facilities can be checked the tuning district rail fault of breaking with transmitter side BA disconnection fault inspection method.
(2), the method for isolated area train occupation inspection:
When train enters isolated area, the reverse signal of isolated area is owing to the by-passing of train reduces, the reverse signal that is checked through isolated area when reception facilities reduces to threshold that software is provided with when following, reception facilities has just started the function that the isolated area train occupation is checked, enter the inspection state, at this moment reception facilities receives real-time inspection the variable condition of this section signal, when the main orbit signal drops to the threshold of reception facilities setting, reception facilities will make track relay fall, and realize train occupation inspection in the isolated area.
(3), main orbit action threshold computations method
Owing to the operating voltage of main orbit is changed by the variation of ballast resistance, reception facilities has following function to the variation of main orbit signal, when not having isolated area to check starting conditions, reception facilities deposits the aviation value of the voltage of main orbit in, after the isolated area inspection starts, main orbit received the aviation value of voltage when reception facilities will take out the free time, 20% move threshold computations in the train occupation inspection by descending, 15% move threshold computations at the isolated area trouble tracing by descending, determine whether moving track relay.Finish the isolated area status checking.
Claims (2)
1, a kind of jointless track circuit electrical isolation state inspection apparatus, it is characterized in that: it comprises main orbit circuit and electrical isolation district circuit two parts composition, equipment is made up of indoor and outdoors two parts, this section track circuit is combined into a track circuit with electric tuning district and reception main orbit: the transmission encode circuit BMQ of BG rail is to after sending box FSH coding, send the box output signal after power amplifier box GFH amplifies, through sending cable FDL, send into Orbit Matching unit PB, send signal by matching unit to the rail both sides, one the tunnel sends into adjacent area section receiving element through the electrical isolation district, this section receiving element JS is sent into through main orbit in another road, receiving element siding track matching unit PB sends into receiving element JS with the reverse signal that AG sends together through isolated area transmission and main orbit signal, through receive cable JDL to the box LBH that accepts filter to receiving box JSH, receiving box will be represented ZTBS output in unit with the track circuit state through receiving condition according to isolated area signal and the variation of main orbit signal amplitude, the receiving condition of AG rail represents that the output of ZTBS is connected to BG rail receiving box, as the trouble tracing condition of BG rail isolated area.
2, jointless track circuit electrical isolation state inspection apparatus according to claim 1, it is characterized in that: electrical isolation district circuit is 5 layout structure: BA1, BA2 connects with the rail Δ L1 on both sides, two PB are connected in parallel on Δ L1 and Δ L2 connection place respectively, SVA is placed in the middle of the Δ L, be connected in parallel on two Δ L2 connection places, constitute the electrical isolation district of 5 layouts, finish the transmission and the reception of signal by PB, BA1, BA2 and rail constitute electric resonant tank, finishing the section of track circuit isolates, SVA finishes the backflow of traction current, send signal and be added in rail Δ L1 and Δ L2 connection place through PB, one the tunnel through Δ L1, BA1 sends into this section track circuit, and another road two rail Δs L2 is to receiving PB, and sends into reception facilities by receiving PB through receiving cable, finish the transmission of isolated area signal, receive main signal and send into receiver side PB, and deliver to reception facilities through receiving cable, finish the main signal transmission by PB through BA2 and Δ L1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03260161 CN2626811Y (en) | 2003-06-27 | 2003-06-27 | Checking apparatus for electrical isolation state of non-insulated track circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03260161 CN2626811Y (en) | 2003-06-27 | 2003-06-27 | Checking apparatus for electrical isolation state of non-insulated track circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2626811Y true CN2626811Y (en) | 2004-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03260161 Expired - Lifetime CN2626811Y (en) | 2003-06-27 | 2003-06-27 | Checking apparatus for electrical isolation state of non-insulated track circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2626811Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973287A (en) * | 2010-09-30 | 2011-02-16 | 北京全路通信信号研究设计院 | Non-insulation track circuit |
| CN101428636B (en) * | 2007-11-07 | 2011-08-10 | 独立行政法人铁道建设运输设施整备支援机构 | Safety cut-out for joint-less track circuit |
-
2003
- 2003-06-27 CN CN 03260161 patent/CN2626811Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428636B (en) * | 2007-11-07 | 2011-08-10 | 独立行政法人铁道建设运输设施整备支援机构 | Safety cut-out for joint-less track circuit |
| CN101973287A (en) * | 2010-09-30 | 2011-02-16 | 北京全路通信信号研究设计院 | Non-insulation track circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130627 Granted publication date: 20040721 |