CN207374426U - Railway foreign body intrusion monitors double net supply control units of system - Google Patents
Railway foreign body intrusion monitors double net supply control units of system Download PDFInfo
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- CN207374426U CN207374426U CN201721407635.9U CN201721407635U CN207374426U CN 207374426 U CN207374426 U CN 207374426U CN 201721407635 U CN201721407635 U CN 201721407635U CN 207374426 U CN207374426 U CN 207374426U
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Abstract
The utility model discloses a kind of double net supply control units of railway foreign body intrusion monitoring system, including the A power grids power-supplying circuit being mutually redundant and B power grid power-supplying circuits；A power grids power-supplying circuit and B power grids power-supplying circuit include isolating transformer, polar biased relay, rectistack, capacitor, resistance and electric network state feedback module respectively, polar biased relay is concatenated with after capacitor parallel connection with resistance, the both ends of sequential circuit are connected on two output terminals of isolating transformer respectively, after electric network state feedback module is connected with rectistack, both ends are connected in parallel on two endpoints of polar biased relay respectively；The utility model prevents malfunction when other power supplys are mixed into short circuit and power supply, improves A netlists and shows that relay, B netlists show the reliability of relay operating circuit, and then ensures the reliability and safety of foreign body intrusion control circuit.
Description
Technical field
The utility model belongs to railway anti-disaster monitoring system, and in particular to a kind of railway foreign body intrusion monitoring system control is single
First circuit.
Background technology
Specialty of taking precautions against natural calamities generally should in high ferro construction at present as a New Specialty suitable for engineering after Railways Stations
With, foreign body intrusion system as railway anti-disaster specialty chief component, thermoacoustic prime engine is directly participated in, safety requirements is high, due to
The appearance successively of professional standard, existing foreign body monitoring system can not meet standard requirement, and complicated, spare and accessory parts at present
It is more, the problems such as small circuit is more, and circuit logic is unintelligible, high failure rate, security is not high.
Utility model content
The purpose of this utility model is to provide a kind of railway foreign body intrusion monitoring system double net supply control units,
The rectistack of single-phase conducting is accessed in AC transformer circuit, and is engaged with polar biased relay, it is therefore prevented that short circuit and electricity
Malfunction during other power supplys is mixed into source, improves the reliability that A netlists show relay, B netlists show relay operating circuit.
The technology contents of the utility model are as follows：
Railway foreign body intrusion monitors double net supply control units of system, including the A power grids power supply control electricity being mutually redundant
Road and B power grid power-supplying circuits；
The A power grids power-supplying circuit and B power grids power-supplying circuit include isolating transformer, polar biased relay respectively
Device, rectistack, capacitor, resistance and electric network state feedback module, polar biased relay are concatenated with after capacitor parallel connection with resistance, string
The both ends for connecing circuit are connected on two output terminals of isolating transformer respectively, after electric network state feedback module is connected with rectistack,
Both ends are connected in parallel on two endpoints of polar biased relay respectively；
The input terminal of the isolating transformer of the A power grid power-supplying circuits is powered by A power grids 220V, B electricity
The input terminal of the isolating transformer of net power-supplying circuit is powered by B power grids 220V.
In double net supply control units of above-mentioned railway foreign body intrusion monitoring system, the control source output of isolating transformer
Than for 2:1.
In double net supply control units of above-mentioned railway foreign body intrusion monitoring system, electric network state feedback module is to be arranged on
Along Railway is across the mesh transmission conducting wire or normally closed switch of railroad bridge both sides.
In double net supply control units of above-mentioned railway foreign body intrusion monitoring system, polar biased relay is JPXC-1000 types
Security polar biased relay.
In double net supply control units of above-mentioned railway foreign body intrusion monitoring system, the model BD1-7 of isolating transformer.
The advantageous effects that the utility model has are as follows：
1st, in double net supply control units of the utility model, the rectification of single-phase conducting is accessed in AC transformer circuit
Heap, and being engaged with polar biased relay, it is ingenious to realize under A power grids and B electric network state fine status, A netlists show relay,
B netlists show that relay is just in powering state, it is therefore prevented that malfunction during other power supplys is mixed into short circuit and power supply, is improved
A netlists show that relay, B netlists show the reliability of relay operating circuit, and then ensure the reliable of foreign body intrusion control circuit
Property and security.
2nd, in double net supply control units of the utility model, outdoor electric network state feedback module is accessed into polar biased relay
In device circuit, once outdoor electric network state feedback module occurs interrupting or failure, polar biased relay overturns with regard to generating state, gives
Go out the prompting of electric network fault, easily and reliably realize the monitoring to outdoor electric network state.
Description of the drawings
Fig. 1 is the utility model railway foreign body intrusion control unit system composition schematic diagram；
Fig. 2 is the theory of constitution figure of the double net supply control units of the utility model；
Fig. 3 is double current direction schematic diagrames of the net supply control unit in preceding half-wave voltage of the utility model；
Fig. 4 is double current direction schematic diagrames of the net supply control unit in rear half-wave voltage of the utility model；
Fig. 5 is the theory of constitution figure of the utility model monitoring foreign bodies control unit.
Reference numeral is：1-PLC control unit；2-indoor machine cabinet；3-relay assembly unit；4-trackside controls
Device；5-power grid；6-outdoor equipment；7-signal Machine Room；8-row control interface；10-outdoor circuit；11-isolating transformer；
12-resistance；13-polar biased relay；14-capacitor；15-rectistack；16-electric network state feedback module；17-positive terminal
Son；18-negative terminal；19-preceding half-wave current direction；20-rear half-wave current direction；31-A netlists show that the 1# of relay is touched
Point switch；32-B netlists show the 1# contact switch of relay；33-foreign body intrusion represents the contact switch of relay；34-different
Object invades limit and represents relay；35-A netlists show the 2# contact switch of relay；36-B netlists show the 2# contact switch of relay；
The contact switch of 37-scheduling reset relay.
Specific embodiment
As shown in Figure 1, the control unit of the railway foreign body intrusion monitoring system of the utility model, including being mounted on indoor unit
The PLC control unit 1 of cabinet 2 and relay assembly unit 3, the relay assembly unit 3 include several relays and phase
Close electric elements, relay assembly unit 3 and the row control interface 8 of signal Machine Room 7 and the trackside controller 5 of outdoor equipment 6
It electrically connects.The PLC control unit 1 of foreign body intrusion monitoring and controlling unit can be according to dispatch command in relay assembly unit 3
Relay excitation powers up, generate required signal, while PLC control unit 1 is provided by gathering relay assembly unit 3
Signal monitors live electric network state in real time.
The control unit of railway foreign body intrusion monitoring system can pass through relay assembly under the control of PLC control unit 1
The combination of relay and its contact switch and peripheral components in unit 3, generates multi-channel control circuit, and the main pair net that includes is powered
Control unit and monitoring foreign bodies control unit.
As in Figure 2-4, double net supply control units of the utility model include the A power grids power supply control being mutually redundant electricity
Road and B power grid power-supplying circuits；
A power grids power-supplying circuit and B power grids power-supplying circuit include isolating transformer 11, polar biased relay respectively
13rd, rectistack 15, capacitor 14, resistance 12 and electric network state feedback module 16, after polar biased relay 13 is in parallel with capacitor 14
It is concatenated with resistance 12, the both ends of sequential circuit are connected on two output terminals of isolating transformer 11, electric network state feedback module respectively
After 16 connect with rectistack 15, both ends are connected in parallel on two endpoints of polar biased relay 13 respectively.Wherein electric network state feedback mould
Block 16 is outdoor 10 part of circuit with rectistack 15, remaining is interior circuit.The wherein parameter of resistance 12 and capacitor 14 point
It is not 750 ohm, 4 microfarads.
A power grids power-supplying circuit is identical with the structure of B power grid power-supplying circuits, simply A power grid power supply controls
The input terminal of the isolating transformer 11 of circuit is powered by A power grids 220V, the isolating transformer of the B power grid power-supplying circuits
11 input terminal is powered by B power grids 220V, and two sets of power grids are mutually redundant, it is ensured that at least a set of network operation is normal, and causes it
Corresponding polar biased relay 13 works normally.In addition the polar biased relay 13 in A power grids power-supplying circuit is also known as A netlists and shows
Relay, the polar biased relay 13 in B power grid power-supplying circuits is also known as B netlists and shows relay, using JPXC-1000 types
Security polar biased relay, the ability excitation power-up only when the input voltage at both ends meets polar requirement, and cause contacts status
Variation.
The model BD1-7 of isolating transformer 11 in Fig. 2, control source output is than being 2:1, i.e. 220V are inputted, 110V outputs.
Electric network state feedback module 16 can be arranged on the one section of mesh transmission conducting wire or a normally closed switch of monitored power grid periphery,
Purpose is that whether normal condition is fed back to power grid, and in the operation of actual high ferro, electric network state feedback module 16 is arranged on height
It, can be by electric network state feedback module 16 when having on bridge under pendant object (such as vehicle falls down from the bridge) pendant on bridge both sides along iron
Damage, causes circuit breaker in Fig. 2, so that the namely A netlists of polar biased relay 13 show that relay or B netlists show relay
It is overturn by excitation powering state, provides the prompting of A nets and/or B net power supply circuit failures.
The operation principle of double net supply control units as shown in Figure 3 and Figure 4, the core component of A/B net power-supplying circuits
It is two security polar biased relays 13, model JPXC-1000 types have polarity selective energy.When A/B nets power supply control electricity
During the access of road, connected the secondary side circuit of isolating transformer 11, external circuit by A/B netlists show the actuating coil of relay with
15 parallel circuit of rectistack is formed, and by adjusting the direction of rectistack, is filtered off alternating current and is flowed away a half-wave, show A/B netlists
Relay obtains the operating voltage of single direction.As shown in figure 3, in a half-wave of alternating current, 19 be the electricity of its preceding half-wave
Stream flow direction, this half-wave current show that relay positive terminal 17 flows by A/B netlists, and negative terminal 18 flows out, thus makes A/B netlists
Show that relay excitation picks up, and charge for capacitance C1, and rectistack 15 is because of the cutoff function of the reverse current of diode, in electric current
This half wave cycles in be off state.
As shown in figure 4, in another half-wave of alternating current, 20 be the current direction of half-wave thereafter, due to rectistack 15
Diode current flow, electric current circulates from rectistack Z, and A/B netlists show relay due to for two polar biased relays, thus this half
In wave period can not excitation, but due to the electric discharge of capacitance C1, the magnet exciting coil for showing relay to A/B netlists provides electric current, from
And remain at attracting state.This assures within the entire AC power supply cycle, as long as the power supply of A/B power grids is normal, A/B
Netlist shows that relay is normal attracting state.Only double nets are disconnected simultaneously, just provide alarm, when singly net is disconnected for any one
It does not alarm.
This circuit has the effect that：
(1) short-circuit protection：
Once short circuit occurs for some part in entire circuit, then rectistack 15 is ineffective, represents relay coil at this time
In, only alternating current circulates, and A/B netlists show relay for DC relay, so alternating current is unable to excitation and picks up.
(2) prevent power supply from mixing road
Since A/B nets have dedicated isolating transformer respectively, that is, isolated from power Protection Code is employed, so A nets and B nets are equal
It powers for independent current source, therefore when being mixed into other power supplys in circuit, closed circuit will not be formed, thus represent that relay will not
Malfunction.
It is powered as shown in figure 5, the core of the monitoring foreign bodies control unit of the utility model is one by DC power supply
Foreign body intrusion represent relay 34, which is powered respectively by DC power anode by the first branch and the second branch,
Foreign body intrusion represents that the cathode feeder ear of relay 34 is connected with DC power cathode；
The first branch shows that the 1# contact switch 31 of relay, B netlists show 32 and of 1# contact switch of relay including A netlists
Foreign body intrusion represents the contact switch 33 of relay；DC power anode shows the 1# contact switch 31 and B of relay by A netlists
After netlist shows the 1# contact switch 32 of relay circuit in parallel, representing that the contact switch 33 of relay is connected with foreign body intrusion
Afterwards, it is connected in the anode feeder ear that foreign body intrusion represents relay 34；
The second branch shows that the 2# contact switch 35 of relay, B netlists show 36 and of 2# contact switch of relay including A netlists
Dispatch the contact switch 37 of reset relay；DC power anode shows the 2# contact switch 35 of relay, B netlists by A netlists
After showing the series circuit that the 2# contact switch 36 of relay and the contact switch 37 of scheduling reset relay form, foreign matter is connected in
Invade the anode feeder ear that limit represents relay 34.
Wherein scheduling reset relay is included in relay assembly unit 3, and control centre issues scheduling and recovers after instructing,
It is the excitation power-up of scheduling reset relay driving coil by the PLC control unit 1 of indoor machine.Reset relay is dispatched to use
JWJXC-H340 types, which delay, puts type relay, its contact switch is conducting state when scheduling reset relay excitation powers up, and extends one
It is disconnected automatically after the section time, usual time delay is 5s, and wherein DC power supply is DC24V.
Arrow represents each relay working condition under normal operating conditions in Fig. 5, and " ↑ " represents A netlists under normal condition
Show that relay, B netlists show that relay, foreign body intrusion represent relay to pick up state, the contact of corresponding relay is connects in figure
Logical state；" ↓ ", represents normal operating conditions dispatching reset relay as full state, and corresponding contact is off-state in figure.
That is when A netlists show the power-up of 1 excitation of polar biased relay, A netlists show the 1# contact switch 31 of relay and A netlists show after
The 2# contact switch 35 of electric appliance is conducting state；When B netlists show the power-up of 13 excitation of polar biased relay, B netlists show relay
1# contact switch 32 and B netlists show that the 2# contact switch 36 of relay is conducting state.Foreign body intrusion represents the contact of relay
Switch 33 it is flat when for open-circuit condition, only when foreign body intrusion represents the power-up of 34 excitation of relay, foreign body intrusion represents relay
Contact switch 33 become conducting state.
Its operation principle is, after foreign body intrusion represents that relay 34 picks up, the foreign body intrusion picked up by itself represents
The contact switch 33 of relay shows that the 1# contact switch 31 of relay or B netlists show 2 structure of 1# contact switch of relay with A netlists
Into closed circuit.When A netlists show that relay failure is fallen, show that relay energized contact 24V controls power supply by B netlists
Just；When B netlists show that relay failure is fallen, show that relay energized contact 24V controls positive pole by A netlists, only
When thering are the A the being mutually redundant netlists to show that relay, B netlists show that relay is fallen simultaneously, cut-out 24V control positive pole power supply ability
Foreign body intrusion is made to represent that 34 dead electricity of relay is fallen.When the A netlists for representing outdoor live redundant network normal ON respectively show after
When electric appliance, B netlists show that relay excitation picks up, outdoor circuit is represented in normal condition, life can be transmitted in control centre at this time
Order makes foreign body intrusion circuit recover normal, and PLC will dispatch reset relay driving excitation at this time, connects foreign body intrusion at this time and represents
The coil circuit of relay 34.Scheduling reset relay puts type relay using slow, when foreign body intrusion represents relay excitation electricity
When road is connected, delayed by dispatching reset relay and put, extended foreign body intrusion and represent that relay excitation circuit extends turn-on time, protect
Card foreign body intrusion represents that relay reliably picks up.
During practical application, along high ferro across two sets of isolated power network feedback of status modules are set on railroad bridge parallel,
Indoor control circuit is connected by cable with outdoor electric network state feedback module under normal condition, and the double power grids of A/B represent relay
It picks up, forms real-time foreign matter monitoring network.
(1) alarm principle
When having on bridge under pendant object (such as vehicle falls down from the bridge) pendant, electric network state feedback module 16 can be damaged, cause it is indoor with
Outdoor liaison circuit interrupts, and the double power grids of A/B is caused to represent that relay is fallen, then indoor to be provided by the control of logic circuit
Warning message.
(2) flow is recovered
If foreign matter intrusion or electric network fault occurs in scene, when scene rush to repair finishes, the double power grids of indoor A/B represent relay
Device picks up, and what control centre need to confirm foreign body intrusion system can access running control system, then by control centre to different
The PLC that object invades limit system sends scheduling recovery order, and scheduling reset relay picks up, and recovers foreign body intrusion logic control circuit
Normal condition finally ensures the redundancy of double net power supplies and the reliability and safety of foreign body intrusion control.
Claims (5)
1. railway foreign body intrusion monitors double net supply control units of system, it is characterised in that：A power grids including being mutually redundant supply
Electric control circuit and B power grid power-supplying circuits；
The A power grids power-supplying circuit and B power grids power-supplying circuit include isolating transformer (11), polar biased relay respectively
Device (13), rectistack (15), capacitor (14), resistance (12) and electric network state feedback module (16), polar biased relay (13) with
It is concatenated after capacitor (14) is in parallel with resistance (12), the both ends of sequential circuit are connected on two outputs of isolating transformer (11) respectively
End, after electric network state feedback module (16) is connected with rectistack (15), both ends are connected in parallel on the two of polar biased relay (13) respectively
A endpoint；
The input terminal of the isolating transformer (11) of the A power grid power-supplying circuits is powered by A power grids 220V, B electricity
The input terminal of the isolating transformer (11) of net power-supplying circuit is powered by B power grids 220V.
2. double net supply control units of railway foreign body intrusion monitoring system according to claim 1, it is characterised in that：Every
Control source output from transformer (11) is than being 2:1.
3. double net supply control units of railway foreign body intrusion monitoring system according to claim 1, it is characterised in that：Institute
The electric network state feedback module (16) stated for set along the railway across railroad bridge both sides mesh transmission conducting wire or normally closed open
It closes.
4. double net supply control units of railway foreign body intrusion monitoring system according to claim 1, it is characterised in that：Institute
The polar biased relay (13) stated is JPXC-1000 type security polar biased relays.
5. double net supply control units of railway foreign body intrusion monitoring system according to claim 1, it is characterised in that：Institute
The isolating transformer (11) stated is BD1-7 type transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407635.9U CN207374426U (en) | 2017-10-30 | 2017-10-30 | Railway foreign body intrusion monitors double net supply control units of system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407635.9U CN207374426U (en) | 2017-10-30 | 2017-10-30 | Railway foreign body intrusion monitors double net supply control units of system |
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| Publication Number | Publication Date |
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| CN207374426U true CN207374426U (en) | 2018-05-18 |
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ID=62337464
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| CN201721407635.9U Active CN207374426U (en) | 2017-10-30 | 2017-10-30 | Railway foreign body intrusion monitors double net supply control units of system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914792A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of construction method of the parallel section protective device of rail-road |
| CN108914790A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of anti-jet power unit of parallel section of rail-road |
| CN108914794A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of parallel section traffic operation safety comprehensive protective device of rail-road |
-
2017
- 2017-10-30 CN CN201721407635.9U patent/CN207374426U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914792A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of construction method of the parallel section protective device of rail-road |
| CN108914790A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of anti-jet power unit of parallel section of rail-road |
| CN108914794A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of parallel section traffic operation safety comprehensive protective device of rail-road |
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