CN2543799Y - Short sub-circuit dead-zone turning type no-isolation track circuit - Google Patents
Short sub-circuit dead-zone turning type no-isolation track circuit Download PDFInfo
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- CN2543799Y CN2543799Y CN 02235551 CN02235551U CN2543799Y CN 2543799 Y CN2543799 Y CN 2543799Y CN 02235551 CN02235551 CN 02235551 CN 02235551 U CN02235551 U CN 02235551U CN 2543799 Y CN2543799 Y CN 2543799Y
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- track circuit
- circuit
- dead band
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- jointless track
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Abstract
The utility model relates to a short sub-circuit dead-zone turning type no-isolation track circuit, which comprises a main track circuit(1G and 3G) and a non-insulating track circuit tuning area. Wherein, the main track circuit(1G and 3G) and the non-insulating track circuit tuning area are used as a short track circuit. The utility model can solve the sub-circuit loss problem of the track circuit train, shorten the length of the sub-circuit dead-zone and ensure that the rail track broken detector provides domestic railway with safe services.
Description
One, technical field
The utility model belongs to jointless track circuit, particularly relates to the tuning district of jointless track circuit and does short track circuit formation short shunt dead band tuner-type jointless track circuit.
Two, background technology
China 1989 introduces UM7 track circuit 1 from France.
This track circuit uses electrical insulation section, and two adjacent track circuits are isolated.Its system architecture is seen Fig. 1.
Track circuit branch " main orbit circuit " and " the tuning district of 26m " two parts, this UM7 track circuit 1 tuning head of district 26m, its equivalent circuit Fig. 2.
For " track circuit 1 " sending end, suitable one " F1 signal source " and a Ri source internal resistance.
For " track circuit 3 " receiving end, the impedance R3 of a suitable F3.
The tuning district of 26m can be considered some short sections, as:
aa′-bb′、bb′-cc′、……dd′……ee′-ff′、ff′-gg′。
If every section rail inductance, resistance are respectively L, R, the train shunt standard is 0.15 Ω.
(1) to the shunt of track circuit 1
Train at om (sending end) along separate routes, suitable 0.15 Ω resistance directly is added in signal source and internal resistance end, source, it is very low to make F1 main orbit circuit receivers rail go into signal UJS1, its track relay 1GJ loss of excitation.
Along with train shunt moves from aa '-bb ', 0.15 Ω forms higher " parallel impedance " by LR, is added in aa ' and locates.UJS1 is raise.
At any time train shunt point continue to move to gg ' direction, " parallel impedance " continues to raise, UJS1 also continues to raise.
When the train shunt point moves to certain a bit (being made as cc ' point), UJS1 is increased to the cleaning door limit value, 1GJ ↑.1 pair 0.15 Ω forfeiture of track circuit along separate routes.
(2) to the shunt of track circuit 3
Train moves to track circuit 3 receiving end gg ' gradually from aa ' of track circuit 1 sending end 0m, along separate routes in the process, reduce gradually by 0.15 Ω shunt resistance and to " parallel impedance " that between gg ' rail inductance, resistance constitutes, thereby track circuit 3 receptor incoming signal UJS3 are reduced gradually.
When the train shunt point moves to certain a bit (being made as ff ' point), U receives 3 and reduces reliable drop-away value, 3GJ ↓.
3 couples 0.15 Ω of track circuit obtain checking along separate routes
The shunt dead band of (3) 0.15 Ω
Can find out that from (1) (2) from cc '-ff ' usefulness 0.15 Ω along separate routes, 1GJ, 3GJ all keep excitation, cc '-ff ' is dead band, tuning differentiation road, and damned section length is considered to be about about 20m by least favorable condition (ballast resistance ∞).
France CSEE company in China Zhengzhou-this problem that Wuhan Wu Changnan-Guangzhou electrification engineering bid technological document is clear and definite.
The technical clause of France CSEE company Zhengzhou-Wuchang Nangong department in 1989 and pointed out in Wu Changnan-Guangzhou bidding documents in 1998 " to have uncertain factor in the shunt detection in the electrical insulation section and the rail detection feature that breaks ... this is the big defective on the French UM7 track circuit 1 transmission security performance.”
In April, 1997, major accident is caused near the forfeiture of section track circuit generation train along separate routes narrowly in Shanghai office new bridge station up two.
Track circuit forfeiture train shunt situation once took place again in Jinan office later on, in time found luckily, did not cause dangerous consequences.These all cause the personnel's of each side very big attention and worry.
Three, summary of the invention
The utility model technical issues that need to address are: a kind of short shunt dead band tuner-type jointless track circuit is provided, solves track circuit train forfeiture problem along separate routes, reduce dead band length along separate routes, guarantee the service of China railways traffic safety.
Technical solution of the present utility model is: short shunt dead band tuner-type jointless track circuit, it comprises main orbit circuit and the tuning district of jointless track circuit, and described main orbit circuit and the tuning district of described jointless track circuit are as short and small track circuit.
The utility model compared with prior art has following advantage: 1. tuning section length is 29m, under 1 Ω km condition, and design baby track circuit.Baby track circuit normal value is stocked coefficient by 1.4 times of considerations.Its shunt dead band degree calculated length is not more than 5m, has reduced dead band length along separate routes, guarantees the China railways traffic safety.
Four, description of drawings
Fig. 1 is the prior art systems constructional drawing;
Fig. 2 is the tuning district of a prior art 26m equivalent circuit diagram;
Fig. 3 is the utility model system construction drawing;
Fig. 4 is the tuning district of a utility model 29m equivalent circuit diagram;
Fig. 5 is the shunt of the utility model train in the tuning district of 29m and shunt dead band length analysis chart.
Five, specific embodiments
Short shunt dead band tuner-type jointless track circuit, it comprises main orbit circuit 1G, 3G and the tuning district of jointless track circuit, short and small track circuit is made in described main orbit circuit 1G, 3G and the tuning district of described jointless track circuit, and its length is 29m, this tuning district equivalent circuit Fig. 4.
Wherein:
RJ is the resistance value of track circuit 3 receiving end tuned cells, and this value is relevant with frequency:
Track circuit 1 is said that F1 frequency impedance value is the tens of approximately m Ω of its value of RJ1, and impedance is lower.
Track circuit 3 is said F3 frequency impedance value is that impedance is higher about about 2 Ω of RJ3.
Send the 1 F1 signal that produces and in tuning district, produce bigger resonance current, deliver to RJ.Send the 3 F3 signals that produce and also deliver to RJ.F1, F3 signal are delivered to indoor by matching transformer etc. jointly.
" receive 3 " adopts FFT (fast Fourier transform) digital information processing, with F1, F3 demodulation in the lump, moves 1G baby track relay " 1GJ2 ", 3G main orbit relay " 3GJ1 " respectively.
In the practicality, whether the 1GJ2 excitation, and also available direct current " high potential " replaces, and add in the 1GJ1 energizing circuit.
The shunt of train in the tuning district of 29m and shunt dead band length.Fig. 5 is seen in its analysis.
Oblique line is partly represented corresponding GJ excitation.
Train at 0m (aa ' locate) along separate routes, the 1GJ1 loss of excitation.Train is at ff ' punishment road, 3GJ1 loss of excitation.Analyze identically, repeat no more with French UM7 track circuit 1.
Now only move and do an analysis with regard to baby track circuit rails relay 1GJ2
Should a clear and definite prerequisite before analyzing, because baby track circuit terminal is about tens of m Ω to its value of impedance RJ1 of F1 frequency, low about 2-3 times than shunting sensitivity 0.15 Ω, so 0.15 Ω shunt resistance from aa ' to gg ' moving process, 0.15 " parallel impedance " that form by LR between Ω resistance and terminal RJ1 reduces gradually, cause the shunting of flow path rail F1 electric current on RJ1 to raise gradually, make that the F1 signal level raises gradually among the UJS3.
When the train shunt point moves to apart from aa ' about about 22m place, the F1 signal level reaches the cleaning door limit value among (as figure ee ' point) UJS3,1GJ2 ↑.The baby track circuit to 0.15 Ω forfeiture along separate routes.
Can be known by above analysis to draw that dead band, tuning differentiation road is ee '-ff ' section, its length≤5m far is shorter than the dead band length of the about 20m of UM71.
Along separate routes dead band length receives the definite relevant of normal operation value with short and small track circuit, considers working stability, and the storage storage coefficient of working value considers by 1.4, i.e. working value=1.4 * sensitivity coefficient of reserve height, and equipment work is stable, but extend in the shunt dead band.
The tuning district of described jointless track circuit comprises indoor section and outdoor section, and described outdoor section is made up of matching transformer and SPT cable, and described indoor section comprises the cable artificial network and receives 3.Described reception 3 is made up of relay 1GJ2,3GJ1.Described matching transformer is jointly delivered to indoor together with the F1 signal of the tuning district of jointless track circuit 1G the F3 signal of main orbit circuit 3G; The fast Fourier transform digital information processings are adopted in described reception 3, with F1 signal and the demodulation in the lump of F3 signal, move main orbit circuit 3G track relay 3GJ1 and the tuning district of jointless track circuit baby track circuit rails relay 1GJ2 respectively.
Described reception 3 is used to receive the signal that main orbit circuit and adjacent sections transmitter constitute in tuning district, and adopts the DSP digital information processing to carry out demodulation.Increase input, adjustment, the sampling of tuning district track circuit and carry out link.
The indoor and outdoor test effect sees the following form
| Sequence number | Testing location | Carrier frequency dead band long (Hz) | This carrier frequency dead band long (m) | Adjacent carrier frequency is along separate routes long (m) in advance | Dead band long (m) along separate routes | Remarks |
| 1 | Jinzhou 2256 signals | F2600 J2000 | 3 | 9 | -6 | Dead band "-" value is overlapping shunt 2000.11.2-3 test along separate routes |
| 2 | Jinzhou 2255 signals | F2300 J1700 | 3 | 7.5 | -4.5 | |
| 3 | Beijing lab simulation dish | F2600 J2000 | 5.5 | 3.5 | 2 | 2001.4.8 test |
| 4 | 21-23G is closed in Wusheng | F2300 J1700 | 3 | 5 | -2 | 2001.7.2 |
| 5 | 23-25G is closed in Wusheng | F1700 J2300 | 7 | 6 | 1 | 2001.7.2 |
| 6 | 25-27G is closed in Wusheng | F2300 J1700 | 3.5 | 4.5 | -1 | 2001.11 |
| 7 | 24-26G is closed in Wusheng | F2000 J2600 | 4 | 6 | -2 | 2001.11 |
| 8 | 22-24G is closed in Wusheng | F2600 J2000 | 5 | 8.5 | -3.5 | 2001.11 |
Claims (6)
1, short shunt dead band tuner-type jointless track circuit, it is characterized in that: it comprises main orbit circuit (1G, 3G) and the tuning district of jointless track circuit, and described main orbit circuit (1G, 3G) is made short and small track circuit with the tuning district of described jointless track circuit.
2, short shunt according to claim 1 dead band tuner-type jointless track circuit is characterized in that: described main orbit circuit (1G), and its train forfeiture shunting point is cc '; Its train forfeiture shunting point of described main orbit circuit (3G) is ff '; The tuning district of described jointless track circuit, its train forfeiture shunting point is ee '; Described short shunt dead band is ee '-ff '.
3, short shunt according to claim 2 dead band tuner-type jointless track circuit, it is characterized in that: described short shunt dead band is ee '-ff '≤5.
4, short shunt according to claim 2 dead band tuner-type jointless track circuit, it is characterized in that: the tuning district of described jointless track circuit comprises indoor section and outdoor section, described outdoor section is made up of matching transformer and SPT cable, and described indoor section comprises cable artificial network and reception (3).
5, short shunt according to claim 2 dead band tuner-type jointless track circuit, it is characterized in that: described reception (3) is made up of relay (1GJ2,3GJ1).
6, short shunt according to claim 2 dead band tuner-type jointless track circuit, it is characterized in that: described matching transformer is jointly delivered to indoor together with the F1 signal in the tuning district of jointless track circuit (1G) the F3 signal of main orbit circuit (3G); The fast Fourier transform digital information processing is adopted in described reception (3), with F1 signal and the demodulation in the lump of F3 signal, move main orbit circuit (3G) track relay (3GJ1) and the tuning district of jointless track circuit baby track circuit rails relay (1GJ2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235551 CN2543799Y (en) | 2002-05-24 | 2002-05-24 | Short sub-circuit dead-zone turning type no-isolation track circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235551 CN2543799Y (en) | 2002-05-24 | 2002-05-24 | Short sub-circuit dead-zone turning type no-isolation track circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2543799Y true CN2543799Y (en) | 2003-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02235551 Expired - Lifetime CN2543799Y (en) | 2002-05-24 | 2002-05-24 | Short sub-circuit dead-zone turning type no-isolation track circuit |
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Cited By (4)
| 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 |
| CN107914601A (en) * | 2017-10-19 | 2018-04-17 | 北京全路通信信号研究设计院集团有限公司 | Insulation joint |
| CN107985130A (en) * | 2017-10-19 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | Insulation joint |
| CN107985129A (en) * | 2017-10-19 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | Insulation joint |
-
2002
- 2002-05-24 CN CN 02235551 patent/CN2543799Y/en not_active Expired - Lifetime
Cited By (7)
| 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 |
| CN107914601A (en) * | 2017-10-19 | 2018-04-17 | 北京全路通信信号研究设计院集团有限公司 | Insulation joint |
| CN107985130A (en) * | 2017-10-19 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | Insulation joint |
| CN107985129A (en) * | 2017-10-19 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | Insulation joint |
| CN107985129B (en) * | 2017-10-19 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Insulating joint |
| CN107914601B (en) * | 2017-10-19 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Insulating joint |
| CN107985130B (en) * | 2017-10-19 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Insulating joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING QUANLU COMMUNICATION SIGNALS RESEARCH AND Free format text: FORMER NAME: BEIJING QUANLU COMMUNICATION SIGNAL RESEARCH DESIGN INST. |
|
| CP03 | Change of name, title or address |
Address after: 100073 Huayuan one mile 18 building Patentee after: Beijing Quanlu Communication Signals Research and Design Institute Co., Ltd. Address before: 100073 Beijing city Fengtai District Taipingqiao 289 Patentee before: Beijing Quanlu Communication Signal Research Design Inst. |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120524 Granted publication date: 20030409 |