CN204567669U - The subway shield door Equipotential connection device of a kind of selectivity deciliter - Google Patents
The subway shield door Equipotential connection device of a kind of selectivity deciliter Download PDFInfo
- Publication number
- CN204567669U CN204567669U CN201520225683.0U CN201520225683U CN204567669U CN 204567669 U CN204567669 U CN 204567669U CN 201520225683 U CN201520225683 U CN 201520225683U CN 204567669 U CN204567669 U CN 204567669U
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- CN
- China
- Prior art keywords
- shielded gate
- bonding wire
- bindiny mechanism
- psd
- shield door
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses the subway shield door Equipotential connection device of a kind of selectivity deciliter, bonding wire connects rail and subway shield door and is provided with bindiny mechanism, and bindiny mechanism is in normally open; Voltage measuring apparatus records the difference of potential between rail and subway shield door; Bindiny mechanism's Monitoring and Controlling module obtains voltage data, the on-off signal of subway shield door and deciliter status signal of bonding wire bindiny mechanism that voltage measuring apparatus records, and carries out Logic judgment; When the bindiny mechanism of bonding wire is in off-state, if shielded gate opens and shielded gate exceedes setting valve in the difference of potential of rail, then bindiny mechanism closes, otherwise maintains the statusquo; When the bindiny mechanism of bonding wire is in closure state, if shielded gate is closed, then bindiny mechanism disconnects, otherwise maintains the statusquo.The program can ensure to get on and off the safety of passenger, and can solve the problems such as shielded gate sparking again, reliability is high.
Description
Technical field
The utility model relates to the subway shield door Equipotential connection device of a kind of selectivity deciliter.
Background technology
China's electric power supply system for subway generally adopts DC1500V, DC750V standard to power, and train gets stream by pantograph from contact system, electric current by rail return current to DC traction substation negative busbar.In DC traction power-supply system, therefore rail and the earth insulating mounting, to reduce the impact of stray current, but also bring rail potential problem.In subway station, shielded gate along the parallel installation of platform, with train keeping parallelism.For preventing passenger from stepping on sky, the distance between shielded gate and vehicle is very little.When passenger gets on and off, health contacts compartment and shielding every body very easily simultaneously, if now the difference of potential (rail potential) of shielded gate and car body is comparatively large, then can damage passenger.In order to ensure the personal safety of passenger, shielded gate should realize insulating mounting with platform structure and peripheral facility, and its insulation resistance is not less than 0.5M Ω; Wait while district arranges insulating tape passenger, connected by bonding wire single-point all the time between rail and shielded gate.
But in metro operation process, shielded gate is often because insulating mounting is improper in work progress, and in operation, humidity, dust etc. electrically pollute and cause insulation breakdown.Shielded gate bonding wire is realizing also guiding the traction current in rail into shielded gate outside rail and door body equipotential link, insulate the access of weak joint greatly by shielded gate, to cause between shielded gate, inner sparking or arcing, the parts in scaling loss shielded gate.Even bonding wire can be blown time serious.
Utility model content
The purpose of this utility model is to provide the subway shield door Equipotential connection device of a kind of selectivity deciliter, it can optionally closed and disconnected bonding wire, make shielded gate PSD and rail T only in the period that passenger gets on and off, carry out current potential connection when the difference of potential between shielded gate PSD and rail T is too high etc.Both ensured passenger safety, and big current can be avoided again to enter shielded gate PSD by bonding wire and cause sparking or arcing.
The purpose of this utility model is realized by following technical scheme:
The subway shield door Equipotential connection device of a kind of selectivity deciliter, comprise the subway shield door bonding wire, the bindiny mechanism Monitoring and Controlling module SCD that connect between rail T and subway shield door PSD, bonding wire has the bindiny mechanism LM making it to be in normally open; Voltage measuring apparatus VMD has the first voltage measurement unit V1, the second voltage measurement unit V2 and reference electrode RF, and wherein the first voltage measurement unit V1 two ends meet shielded gate PSD and reference electrode RF respectively, record shielded gate PSD voltage to ground; Second voltage measurement unit V2 two ends meet rail T and reference electrode RF respectively, record rail T voltage to ground; Bindiny mechanism Monitoring and Controlling module SCD has acquisition of signal, logic judging function, communicate with voltage measuring apparatus VMD signal and control linkage mechanism LM with realize bonding wire deciliter.
In aforementioned environment for use, the carrying out of subway shield door bonding wire deciliter is controlled, bindiny mechanism Monitoring and Controlling module SCD for gathering shielded gate PSD on-off signal, rail T voltage to ground, shielded gate PSD voltage to ground and bonding wire deciliter status signal, and carries out Logic judgment; The difference of potential setting valve in shielded gate PSD and compartment presets; Its concrete control policy is: when detecting that bonding wire disconnects, and judges whether shielded gate PSD opens; If shielded gate PSD does not open, bonding wire keeps former deciliter state; If shielded gate PSD opens, continue to judge whether the difference of potential in shielded gate PSD and compartment exceedes setting valve; If the difference of potential in shielded gate PSD and compartment does not exceed setting valve, bonding wire keeps former deciliter state; If the difference of potential in shielded gate PSD and compartment exceedes setting valve, bonding wire closes; When detecting that bonding wire closes, judge whether shielded gate PSD opens; If shielded gate PSD opens, bonding wire keeps former deciliter state; If shielded gate PSD closes, bonding wire disconnects.
Principle of work of the present utility model is:
Measure rail T voltage to ground U respectively
rGand shielded gate PSD voltage to ground U
dG, because railway car is equal with rail T current potential, the difference of potential of shielded gate PSD and railway car is U
dR=U
dG-U
rG.Bindiny mechanism Monitoring and Controlling module SCD for gathering shielded gate PSD on-off signal, rail T voltage to ground, shielded gate PSD voltage to ground and bonding wire deciliter status signal, and carries out Logic judgment; The difference of potential setting valve in shielded gate PSD and compartment is pre-set; The principle of work of Logic judgment is: when detecting that bonding wire disconnects, and judges whether shielded gate PSD opens; If shielded gate PSD does not open, bonding wire keeps former deciliter state; If shielded gate PSD opens, continue to judge whether the difference of potential in shielded gate PSD and compartment exceedes setting valve; If the difference of potential in shielded gate PSD and compartment does not exceed setting valve, bonding wire keeps former deciliter state; If the difference of potential in shielded gate PSD and compartment exceedes setting valve, bonding wire closes; When detecting that bonding wire closes, judge whether shielded gate PSD opens; If shielded gate PSD opens, bonding wire keeps former deciliter state; If shielded gate PSD closes, bonding wire disconnects.
Bindiny mechanism Monitoring and Controlling module SCD is according to the disconnection of Logic judgment output control bindiny mechanism LM and close.
The utility model beneficial effect is compared with prior art:
One, the utility model is ensureing that passenger gets on and off under safe prerequisite, at the bonding wire without the need to disconnecting in time during equipotential link between shielded gate and rail, thus avoid causing sparking, arcing, the even situation of damage equipment because traction current flows into shielded gate by bonding wire.
Two, the utility model only closes bonding wire when shielded gate and compartment current potential exceed setting valve, effectively reduces the frequent movement of bonding wire bindiny mechanism, greatly improves the reliability of bonding wire bindiny mechanism.
Three, the utility model can monitor rail potential simultaneously, and side rail wear with the use of.
Below in conjunction with the drawings and specific embodiments, the utility model will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment in subway station.
Fig. 2 is the condition judgment schematic flow sheet of embodiment.
Detailed description of the invention
Embodiment
As shown in Figure 1, the subway shield door Equipotential connection device schematic diagram structure of a kind of selectivity deciliter, comprises subway shield door bonding wire (containing Chang Kai bindiny mechanism LM), bindiny mechanism Monitoring and Controlling module SCD, voltage measuring apparatus VMD (comprising the first voltage measurement unit V1, the second voltage measurement unit V2 and reference electrode RF); Bindiny mechanism Monitoring and Controlling module SCD is placed in control cabin, and subway shield door bonding wire (containing Chang Kai bindiny mechanism), reference electrode and the first voltage measurement unit V1, the second voltage measurement unit V2 are placed in tunnel; Reference electrode RF imbeds underground in one end, another termination voltage measurement unit, as reference current potential; First voltage measurement unit V1 two ends meet shielded gate PSD and reference electrode RF respectively, record shielded gate PSD voltage to ground; Second voltage measurement unit V2 two ends meet rail T and reference electrode RF respectively, record rail T voltage to ground; Bonding wire bindiny mechanism LM is a mechanical connecting device, is located on bonding wire, is in normally open, deciliter being controlled by bindiny mechanism Monitoring and Controlling module SCD of it.In figure, solid line represents physical connection line, and dotted line represents signaling path, represents that signal acquisition module gathers shielded gate on-off signal, and the result of a measurement of the first voltage measurement unit V1 and the second voltage measurement unit V2.
Principle of work of the present utility model is:
First voltage measurement unit V1 measures shielded gate PSD voltage to ground U
dG, the second voltage measurement unit V2 measures rail T voltage to ground U
rG; Due to railway car and rail T equipotential, the difference of potential of shielded gate PSD and railway car is U
dR=U
dG-U
rG.Bindiny mechanism Monitoring and Controlling module SCD for gathering shielded gate PSD on-off signal, rail T voltage to ground, shielded gate PSD voltage to ground and bonding wire deciliter status signal, and carries out Logic judgment; The difference of potential setting valve in shielded gate PSD and compartment is pre-set; The principle of work of Logic judgment is: when detecting that bonding wire disconnects, and judges whether shielded gate PSD opens; If shielded gate PSD does not open, bonding wire keeps former deciliter state; If shielded gate PSD opens, illustrate now have passenger getting on/off, continue to judge whether the difference of potential in shielded gate PSD and compartment exceedes setting valve; If the difference of potential in shielded gate PSD and compartment does not exceed setting valve, bonding wire keeps former deciliter state; If the difference of potential in shielded gate PSD and compartment exceedes setting valve, think that now the difference of potential in shielded gate PSD and compartment may work the mischief to passenger, closes bonding wire bindiny mechanism; When detecting that bonding wire closes, judge whether shielded gate PSD opens; If shielded gate PSD opens, bonding wire keeps former deciliter state; If shielded gate PSD closes, bonding wire bindiny mechanism is disconnected.
Bindiny mechanism Monitoring and Controlling module SCD is according to the disconnection of Logic judgment output control bindiny mechanism LM and close.
Fig. 2 is the condition judgment schematic flow sheet of embodiment, and the first voltage measurement unit V1 measures shielded gate PSD voltage to ground U
dG, the second voltage measurement unit V2 measures rail T voltage to ground U
rG, due to railway car and rail T equipotential, the difference of potential of shielded gate PSD and railway car is U
dR=U
dG-U
rG.Bindiny mechanism Monitoring and Controlling module SCD for gathering shielded gate PSD on-off signal, rail T voltage to ground, shielded gate PSD voltage to ground and bonding wire deciliter status signal, and carries out Logic judgment; The difference of potential setting valve in shielded gate PSD and compartment is pre-set; When detecting that bonding wire disconnects, judge whether shielded gate PSD opens; If shielded gate PSD does not open, bonding wire keeps former deciliter state; If shielded gate PSD opens, illustrate now have passenger getting on/off, continue to judge whether the difference of potential in shielded gate PSD and compartment exceedes setting valve; If the difference of potential in shielded gate PSD and compartment does not exceed setting valve, bonding wire keeps former deciliter state; If the difference of potential in shielded gate PSD and compartment exceedes setting valve, think that now the difference of potential in shielded gate PSD and compartment may work the mischief to passenger, closes bonding wire bindiny mechanism LM; When detecting that bonding wire closes, judge whether shielded gate PSD opens; If shielded gate PSD opens, bonding wire keeps former deciliter state; If shielded gate PSD closes, bonding wire bindiny mechanism LM is disconnected.
Claims (2)
1. the subway shield door Equipotential connection device of a selectivity deciliter, it is characterized in that, comprise the subway shield door bonding wire, the bindiny mechanism Monitoring and Controlling module SCD that connect between rail T and subway shield door PSD, bonding wire has the bindiny mechanism LM making it to be in normally open; Voltage measuring apparatus VMD has the first voltage measurement unit V1, the second voltage measurement unit V2 and reference electrode RF, and wherein the first voltage measurement unit V1 two ends meet shielded gate PSD and reference electrode RF respectively, record shielded gate PSD voltage to ground; Second voltage measurement unit V2 two ends meet rail T and reference electrode RF respectively, record rail T voltage to ground; Bindiny mechanism Monitoring and Controlling module SCD has acquisition of signal, logic judging function, communicate with voltage measuring apparatus VMD signal and control linkage mechanism LM with realize bonding wire deciliter.
2. the subway shield door Equipotential connection device of selectivity according to claim 1 deciliter, it is characterized in that, described reference electrode RF can share with the reference electrode of scramble current monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225683.0U CN204567669U (en) | 2015-04-15 | 2015-04-15 | The subway shield door Equipotential connection device of a kind of selectivity deciliter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225683.0U CN204567669U (en) | 2015-04-15 | 2015-04-15 | The subway shield door Equipotential connection device of a kind of selectivity deciliter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204567669U true CN204567669U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520225683.0U Withdrawn - After Issue CN204567669U (en) | 2015-04-15 | 2015-04-15 | The subway shield door Equipotential connection device of a kind of selectivity deciliter |
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| CN (1) | CN204567669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742915A (en) * | 2015-04-15 | 2015-07-01 | 西南交通大学 | Selective opening and closing type equipotential connecting device of subway shield door and control method of device |
-
2015
- 2015-04-15 CN CN201520225683.0U patent/CN204567669U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742915A (en) * | 2015-04-15 | 2015-07-01 | 西南交通大学 | Selective opening and closing type equipotential connecting device of subway shield door and control method of device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |