CN103852684B - Automatic alarm device for power failure, default phase and ground connection of 10kV high-voltage cabinet - Google Patents
Automatic alarm device for power failure, default phase and ground connection of 10kV high-voltage cabinet Download PDFInfo
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- CN103852684B CN103852684B CN201410109885.9A CN201410109885A CN103852684B CN 103852684 B CN103852684 B CN 103852684B CN 201410109885 A CN201410109885 A CN 201410109885A CN 103852684 B CN103852684 B CN 103852684B
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Abstract
The invention discloses an automatic alarm device for power failure, default phase and ground connection of a 10kV high-voltage cabinet. The automatic alarm device comprises a high-voltage incoming cabinet GYG, wherein three phases of incoming lines A, B and C of the high-voltage incoming cabinet GYG are connected with a high-voltage display ZSQ after being subjected to voltage reduction by three high-voltage capacitors Ca, Cb and Cc respectively; after voltage reduction, output ports A0, B0, C0 and D0 are formed in the three high-voltage capacitors Ca, Cb and Cc, and are connected with an alarm BJQ; the alarm BJQ is connected with a UPS (Uninterrupted Power Supply) alternating-current 220V power supply DY. The automatic alarm device can be used for monitoring the power supply situation of a power supply circuit in real time. When faults of power failure, default phase, ground connection and the like occur in the power supply circuit, the alarm makes a sound in time, so that an operator on duty can find problems at first time and solve the problem in time.
Description
Technical field
The present invention relates to a kind of alarm device, specifically, it is a kind of 10kv high-voltage board power failure, phase shortage, ground connection report automatically
Alarm device.
Background technology
In the electric power system in colliery, use 10kv high-voltage double-loop and power, based on a road, supply circuit, another road is
Available circuit, when main confession circuit breaks down, is powered using available circuit.Judge the presence or absence of active and standby confession circuit electricity at present
It is by the three of High-voltage Incoming Cabinet led display lamp instructions, when the faults such as power failure, phase shortage, ground connection in available circuit, value
Class personnel not only not in time it has been observed that be in operation main confession circuit but unexpected have a power failure, available circuit is unable to normal power supply, just again
Significant blackouts accident can be caused to full ore deposit；When main confession circuit phase shortage, earth fault in normal power supply, operator on duty can not
In time it has been observed that being possible to burn electrical equipment, cause certain accident.
Content of the invention
The present invention solves the deficiencies in the prior art, there is provided a kind of 10kv high-voltage board power failure, phase shortage, ground connection automatic alarm
Device.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of 10kv high-voltage board power failure, phase shortage, ground connection autoalarm, including High-voltage Incoming Cabinet gyg, described height is pressed into
Three-phase inlet wire a, b, c of line cabinet gyg are connected with high voltage display zsq respectively after three high-voltage capacitances ca, cb, cc blood pressure lowering, its
Feature is: is provided with output port a0, b0, c0, earth terminal d0 and warning after three described high-voltage capacitances ca, cb, cc blood pressure lowering
Device bjq connects, and described alarm bjq is connected with ups exchange 220v power supply dy, and the control circuit of described alarm bjq includes out
Close power supply, electric bell, permutator, relay, audion, resistance, diode, described output port a0 connect with resistance r1 after and
Diode d1 negative electrode connects, and diode d1 anode is connected with electric capacity c1 one end, and the other end of electric capacity c1 is with pnp audion q1's
Emitter stage connects, and diode d1 anode is also connected with resistance r2 one end, and the resistance r2 other end is connected with the base stage of pnp audion q1
Connect, resistance r3 is connected between base stage and the emitter stage of pnp audion q1, the emitter stage of described pnp audion q1 with connect
Ground terminal d0 connects, and pnp audion q1 colelctor electrode is connected with relay j1 one end, pnp audion q1 colelctor electrode also with two poles
Pipe d2 anode connects, and diode d2 negative electrode is connected with resistance r4 one end, after the resistance r4 other end is connected with the relay j1 other end
It is connected with Switching Power Supply kd outfan 4, diode d3 is in parallel with relay j1；Described output port b0 connect with resistance r5 after with
Diode d4 negative electrode connects, and diode d4 anode is connected with electric capacity c2 one end, and diode d4 anode is also connected with resistance r6 one end,
The other end of resistance r6 is connected with the base stage of pnp audion q2, and the described electric capacity c2 other end is connected with earth terminal d0, resistance r7
It is connected between base stage and the emitter stage of pnp audion q2, the emitter stage of described pnp audion q2 is with earth terminal d0 even
Connect, pnp audion q2 colelctor electrode is connected with relay j2 one end, pnp audion q2 colelctor electrode also with diode d5 anode
Connect, diode d5 negative electrode is connected with resistance r8 one end, the resistance r8 other end is electric with switch after being connected with the relay j2 other end
Source kd outfan 4 connects, and diode d6 is in parallel with relay j2；Described output port c0 connect with resistance r9 after with diode d7
Negative electrode connects, and diode d7 anode is connected with electric capacity c3 one end, and the other end of electric capacity c3 is connected with the emitter stage of pnp audion q3
Connect, diode d7 anode is also connected with resistance r10 one end, the resistance r10 other end is connected with the base stage of pnp audion q3, electricity
Resistance r11 is connected between base stage and the emitter stage of pnp audion q3, the emitter stage of described pnp audion q3 and earth terminal
D0 connects, and pnp audion q3 colelctor electrode is connected with relay j3 one end, pnp audion q3 colelctor electrode also with diode d8
Anode connects, and diode d8 negative electrode is connected with resistance r12 one end, after the resistance r12 other end is connected with the relay j3 other end and
Switching Power Supply kd outfan 4 connects, and diode d9 is in parallel with relay j3；The input p1 of the 220v alternating current of ups is through power supply
Be connected with Switching Power Supply kd input 1 after switch k1, insurance rd, the input p1 of the 220v alternating current of ups through on and off switch k1,
Also be connected with electric bell dl one end after insurance rd, the input p2 of the 220v alternating current of ups after on and off switch k1 with Switching Power Supply
Kd input 2 connects, and the input p2 of the 220v alternating current of ups is also public with relay j1 respectively after on and off switch k1 to be touched
Point, relay j2 common, the connection of relay j3 common, described relay j1, j2, j3 normally-closed contact and permutator
The i end of k2 connects, and normally opened contact is connected with the ii end of permutator k2, described Switching Power Supply kd outfan 3 and earth terminal
D0 connects, and Switching Power Supply kd outfan 3 is also connected with Switching Power Supply kd outfan 4 with after diode d10, resistance r13 series connection, institute
State the electric bell dl other end to be connected with permutator k2.
Preferably, described diode d2, d5, d8, d10 are light emitting diode；Described electric capacity c1, c2, c3 are electrochemical capacitor.
Present invention utilizes the power supply of 10kv incoming line cabinet high voltage display is as monitoring signals.This power supply is that 10kv three-phase is high
Piezoelectricity obtains through capacitance decompression, and voltage and current is all very little, unidirectional short circuit current only have 0.1ma about it is impossible to directly
Drive the output switch parameter equipment such as optocoupler, controllable silicon, relay.The present invention promotes pnp audion first with this micro-current,
Pnp audion drives relay output switch amount, digital output modul alarm work again.Described high voltage display uses
The positive half cycle of sinusoidal ac, and the present invention uses the negative half period of sinusoidal ac, does not interfere with high voltage display completely
Display effect.
The present invention can constantly monitor supply line electric power thus supplied, when power failure, phase shortage, ground connection etc. in supply line
During fault, alarm will send the sound in time, allows operator on duty find that problem in the very first time, timely process problem.
Brief description
Fig. 1 present configuration schematic diagram.
The electric operation control circuit figure of Fig. 2 alarm.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Figures 1 and 2, a kind of 10kv high-voltage board power failure, phase shortage, ground connection autoalarm, including high pressure inlet wire
Three-phase inlet wire a, b, c of cabinet gyg, described High-voltage Incoming Cabinet gyg respectively after three high-voltage capacitances ca, cb, cc blood pressure lowering with high pressure
Display zsq connect, it is characterized in that: be provided with after three described high-voltage capacitances ca, cb, cc blood pressure lowering output port a0, b0,
C0, earth terminal d0 are connected with alarm bjq, and described alarm bjq is connected with ups exchange 220v power supply dy, described alarm bjq
Control circuit include Switching Power Supply, electric bell, permutator, relay, audion, resistance, diode, described output port a0
It is connected with diode d1 negative electrode with after resistance r1 series connection, diode d1 anode is connected with electric capacity c1 one end, the other end of electric capacity c1
It is connected with the emitter stage of pnp audion q1, diode d1 anode is also connected with resistance r2 one end, the resistance r2 other end and pnp
The base stage of type audion q1 connects, and resistance r3 is connected between base stage and the emitter stage of pnp audion q1, described pnp three
The emitter stage of pole pipe q1 is connected with earth terminal d0, and pnp audion q1 colelctor electrode is connected with relay j1 one end, pnp three pole
Pipe q1 colelctor electrode is also connected with diode d2 anode, and diode d2 negative electrode is connected with resistance r4 one end, the resistance r4 other end with continue
The electrical equipment j1 other end is connected with Switching Power Supply kd outfan 4 after connecting, and diode d3 is in parallel with relay j1；Described output port
B0 is connected with diode d4 negative electrode with after resistance r5 series connection, and diode d4 anode is connected with electric capacity c2 one end, diode d4 anode
Also be connected with resistance r6 one end, the other end of resistance r6 is connected with the base stage of pnp audion q2, the described electric capacity c2 other end with
Earth terminal d0 connects, and resistance r7 is connected between base stage and the emitter stage of pnp audion q2, described pnp audion q2's
Emitter stage is connected with earth terminal d0, and pnp audion q2 colelctor electrode is connected with relay j2 one end, pnp audion q2 current collection
Pole is also connected with diode d5 anode, and diode d5 negative electrode is connected with resistance r8 one end, and the resistance r8 other end is another with relay j2
One end is connected with Switching Power Supply kd outfan 4 after connecting, and diode d6 is in parallel with relay j2；Described output port c0 and resistance
It is connected with diode d7 negative electrode after r9 series connection, diode d7 anode is connected with electric capacity c3 one end, the other end of electric capacity c3 and pnp
The emitter stage of audion q3 connects, and diode d7 anode is also connected with resistance r10 one end, the resistance r10 other end and pnp three pole
The base stage of pipe q3 connects, and resistance r11 is connected between base stage and the emitter stage of pnp audion q3, described pnp audion q3
Emitter stage be connected with earth terminal d0, pnp audion q3 colelctor electrode is connected with relay j3 one end, pnp audion q3 collection
Electrode is also connected with diode d8 anode, and diode d8 negative electrode is connected with resistance r12 one end, the resistance r12 other end and relay
The j3 other end is connected with Switching Power Supply kd outfan 4 after connecting, and diode d9 is in parallel with relay j3；The 220v alternating current of ups
Input p1 through on and off switch k1, insurance rd after be connected with Switching Power Supply kd input 1, the input of the 220v alternating current of ups
End p1 is also connected with electric bell dl one end after on and off switch k1, insurance rd, and the input p2 of the 220v alternating current of ups opens through power supply
It is connected with Switching Power Supply kd input 2 after closing k1, the input p2 of the 220v alternating current of ups also distinguishes after on and off switch k1
It is connected with relay j1 common, relay j2 common, relay j3 common, described relay j1, j2, j3 are normal
Closed contact is connected with the i end of permutator k2, and normally opened contact is connected with the ii end of permutator k2, described Switching Power Supply kd
Outfan 3 is connected with earth terminal d0, Switching Power Supply kd outfan 3 also connect with diode d10, resistance r13 after with Switching Power Supply
Kd outfan 4 connects, and the described electric bell dl other end is connected with permutator k2.
Preferably, described diode d2, d5, d8, d10 are light emitting diode；Described electric capacity c1, c2, c3 are electrochemical capacitor.
As shown in Fig. 2 operation principle of the present invention is as follows:
P1, p2 are the input that ups exchanges 220v alternating current, provide uninterrupted power source it is ensured that alarm for this alarm
Normal operation at any time.A0, b0, c0 are input after capacitance decompression for the three-phase high-voltage, and d0 inputs for earthing pole
End.K1 is on and off switch.Rd is insurance.Kd is Switching Power Supply, and 1,2 feet are 220v ac power input end, and 3,4 feet are direct current
24v outfan, 3 feet are that just 4 feet are negative.Dl is warning electric bell.K2 is permutator, is placed in end, works as power supply during normal power supply
Electric bell alarming when power failure, phase shortage, ground connection in circuit, is placed in end, the electric bell alarming when circuit is sent a telegram here during line outage.j1、
J2, j3 are three direct current 24v relays, reflect the running status of three-phase high-voltage respectively.
Alternating current (alternating current after capacitance decompression for a phase of three-phase high-voltage) after input a0 inputs blood pressure lowering, warp
Resistance r1 current limliting, diode d1 rectification, after electric capacity c1 filtering, then it is input to the base stage of audion q1 through resistance r2, be audion
Q1 provides base voltage.Q1 begins to turn on after obtaining base voltage, the adhesive of control relay j1.When input a0 does not input electricity
During pressure, audion q1 accordingly loses base voltage and only carries, and control relay j1 disconnects.
Alternating current after input b0 inputs blood pressure lowering, through current-limiting resistance r5 current limliting, diode d4 rectification, electric capacity c2 filters
Afterwards, then through resistance r6 it is input to the base stage of audion q2, provide base voltage for audion q2.Q2 starts after obtaining base voltage
Conducting, the adhesive of control relay j2.When input b0 does not have input voltage, audion q2 accordingly loses base voltage and carries
Only, control relay j2 disconnects.
Alternating current after input c0 inputs blood pressure lowering, through current-limiting resistance r9 current limliting, diode d7 rectification, electric capacity c3 filters
Afterwards, then through resistance r10 it is input to the base stage of audion q3, provide base voltage for audion q3.Q3 opens after obtaining base voltage
Begin to turn on, the adhesive of control relay j3.When input c0 does not have input voltage, audion q3 accordingly loses base voltage and carries
Only, control relay j3 disconnects.
When three-phase high-voltage a0, b0, c0 are normal, the coil of tri- relays of j1, j2, j3 is all energized, the actuating of relay,
Three common of three relays are connected with the end of permutator k2 after being in parallel with normally opened contact, 220v alternating current
One road is directly inputted to a road input of electric bell, and another road input of electric bell is connected with the i end of permutator k2, therefore electricity
The 220v ac power supply circuit of bell dl is off, and electric bell will not be reported to the police；When three-phase high-voltage a0, b0, c0 have a power failure, lack
When phase, ground connection, three relay coil all dead electricity actuatings of relay, three relay common are closed with normally-closed contact, connect
Lead to the current supply circuit of 220v alternating current and electric bell, electric bell starts to report to the police.Operator on duty is carried out after being instantly available signal accordingly
Operation.
When line outage, switch k2 is placed in end, and three relay coil all dead electricity relays are failure to actuate, common
It is connected with normally-closed contact, normally-closed contact is connected with the i end of permutator, the 220v ac power supply circuit of electric bell dl is in disconnection shape
State, electric bell will not be reported to the police；When circuit is sent a telegram here, three relay coils are all energized the actuating of relay, disconnect common port with normally closed
The connection of contact, common is closed with normally opened contact, and normally opened contact is connected with the ii end of permutator, has connected 220v exchange
Electricity and the current supply circuit of electric bell, electric bell starts to report to the police, and operator on duty is operated after being instantly available signal accordingly.
Foregoing describes only single-circuit alarm device in the high-tension line of double loop, the main confession loop of double circuit power supply and standby
For loop respectively a set of alarm, when power failure, phase shortage, earth fault in circuit arbitrary in high-voltage double-loop, report all can be made
Alert device and alarm, operator on duty is operated after being instantly available signal accordingly.
Claims (3)
1. a kind of 10kv high-voltage board power failure, phase shortage, ground connection autoalarm, including High-voltage Incoming Cabinet gyg, described high pressure inlet wire
Three-phase inlet wire a, b, c of cabinet gyg are connected with high voltage display zsq respectively after three high-voltage capacitances ca, cb, cc blood pressure lowering, and it is special
Levying is: is provided with output port a0, b0, c0, earth terminal d0 and alarm after three described high-voltage capacitances ca, cb, cc blood pressure lowering
Bjq connects, and described alarm bjq is connected with ups exchange 220v power supply dy, and the control circuit of described alarm bjq includes switching
Power supply, electric bell, permutator, relay, audion, resistance, diode, described output port a0 connect with resistance r1 after with two
Pole pipe d1 negative electrode connects, and diode d1 anode is connected with electric capacity c1 one end, and the other end of electric capacity c1 is sent out with pnp audion q1's
Emitter-base bandgap grading connects, and diode d1 anode is also connected with resistance r2 one end, and the resistance r2 other end is connected with the base stage of pnp audion q1
Connect, resistance r3 is connected between base stage and the emitter stage of pnp audion q1, the emitter stage of described pnp audion q1 with connect
Ground terminal d0 connects, and pnp audion q1 colelctor electrode is connected with relay j1 one end, pnp audion q1 colelctor electrode also with two poles
Pipe d2 anode connects, and diode d2 negative electrode is connected with resistance r4 one end, after the resistance r4 other end is connected with the relay j1 other end
It is connected with Switching Power Supply kd outfan 4, diode d3 is in parallel with relay j1；Described output port b0 connect with resistance r5 after with
Diode d4 negative electrode connects, and diode d4 anode is connected with electric capacity c2 one end, and diode d4 anode is also connected with resistance r6 one end,
The other end of resistance r6 is connected with the base stage of pnp audion q2, and the described electric capacity c2 other end is connected with earth terminal d0, resistance r7
It is connected between base stage and the emitter stage of pnp audion q2, the emitter stage of described pnp audion q2 is with earth terminal d0 even
Connect, pnp audion q2 colelctor electrode is connected with relay j2 one end, pnp audion q2 colelctor electrode also with diode d5 anode
Connect, diode d5 negative electrode is connected with resistance r8 one end, the resistance r8 other end is electric with switch after being connected with the relay j2 other end
Source kd outfan 4 connects, and diode d6 is in parallel with relay j2；Described output port c0 connect with resistance r9 after with diode d7
Negative electrode connects, and diode d7 anode is connected with electric capacity c3 one end, and the other end of electric capacity c3 is connected with the emitter stage of pnp audion q3
Connect, diode d7 anode is also connected with resistance r10 one end, the resistance r10 other end is connected with the base stage of pnp audion q3, electricity
Resistance r11 is connected between base stage and the emitter stage of pnp audion q3, the emitter stage of described pnp audion q3 and earth terminal
D0 connects, and pnp audion q3 colelctor electrode is connected with relay j3 one end, pnp audion q3 colelctor electrode also with diode d8
Anode connects, and diode d8 negative electrode is connected with resistance r12 one end, after the resistance r12 other end is connected with the relay j3 other end and
Switching Power Supply kd outfan 4 connects, and diode d9 is in parallel with relay j3；The input p1 of the 220v alternating current of ups is through power supply
Be connected with Switching Power Supply kd input 1 after switch k1, insurance rd, the input p1 of the 220v alternating current of ups through on and off switch k1,
Also be connected with electric bell dl one end after insurance rd, the input p2 of the 220v alternating current of ups after on and off switch k1 with Switching Power Supply
Kd input 2 connects, and the input p2 of the 220v alternating current of ups is also public with relay j1 respectively after on and off switch k1 to be touched
Point, relay j2 common, the connection of relay j3 common, described relay j1, j2, j3 normally-closed contact and permutator
The i end of k2 connects, and normally opened contact is connected with the ii end of permutator k2, and described Switching Power Supply kd outfan 3 is with earth terminal d0 even
Connect, Switching Power Supply kd outfan 3 is also connected with Switching Power Supply kd outfan 4 with after diode d10, resistance r13 series connection, described electricity
The bell dl other end is connected with permutator k2.
2. 10kv high-voltage board power failure according to claim 1, phase shortage, ground connection autoalarm, is characterized in that described two
Pole pipe d2, d5, d8, d10 are light emitting diode.
3. 10kv high-voltage board power failure according to claim 1, phase shortage, ground connection autoalarm, is characterized in that: described electricity
Holding c1, c2, c3 is electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109885.9A CN103852684B (en) | 2014-03-24 | 2014-03-24 | Automatic alarm device for power failure, default phase and ground connection of 10kV high-voltage cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109885.9A CN103852684B (en) | 2014-03-24 | 2014-03-24 | Automatic alarm device for power failure, default phase and ground connection of 10kV high-voltage cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103852684A CN103852684A (en) | 2014-06-11 |
| CN103852684B true CN103852684B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410109885.9A Expired - Fee Related CN103852684B (en) | 2014-03-24 | 2014-03-24 | Automatic alarm device for power failure, default phase and ground connection of 10kV high-voltage cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN103852684B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114069A (en) * | 2020-08-28 | 2022-03-01 | 中国石油天然气股份有限公司 | Device and system for determining occurrence of ground fault of cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108310U (en) * | 1991-11-07 | 1992-06-24 | 枣庄市峄城区棠阴供电站 | Loss-of-phase, theftproof alarm device for power lines |
| CN2651759Y (en) * | 2003-11-06 | 2004-10-27 | 吴煦 | Protector of AC three-phase electric monitoring and power-driven apparatus |
| CN201262637Y (en) * | 2008-07-22 | 2009-06-24 | 山西潞安环保能源开发股份有限公司常村煤矿 | Phase failure alarm device |
| CN201804049U (en) * | 2010-07-30 | 2011-04-20 | 江苏捷诚车载电子信息工程有限公司 | Three-phase power supply open-phase warning circuit |
| CN203054066U (en) * | 2013-01-25 | 2013-07-10 | 海盐县供电局 | Multipath power failure, power recovery and phase loss automatic alarm device |
| CN203759174U (en) * | 2014-03-24 | 2014-08-06 | 卫斌鹏 | High-voltage switch cabinet fault comprehensive alarm device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2992615B2 (en) * | 1998-03-19 | 1999-12-20 | 財団法人 関西電気保安協会 | Line constant measuring device and ground fault monitoring device for ungrounded electric circuit |
-
2014
- 2014-03-24 CN CN201410109885.9A patent/CN103852684B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108310U (en) * | 1991-11-07 | 1992-06-24 | 枣庄市峄城区棠阴供电站 | Loss-of-phase, theftproof alarm device for power lines |
| CN2651759Y (en) * | 2003-11-06 | 2004-10-27 | 吴煦 | Protector of AC three-phase electric monitoring and power-driven apparatus |
| CN201262637Y (en) * | 2008-07-22 | 2009-06-24 | 山西潞安环保能源开发股份有限公司常村煤矿 | Phase failure alarm device |
| CN201804049U (en) * | 2010-07-30 | 2011-04-20 | 江苏捷诚车载电子信息工程有限公司 | Three-phase power supply open-phase warning circuit |
| CN203054066U (en) * | 2013-01-25 | 2013-07-10 | 海盐县供电局 | Multipath power failure, power recovery and phase loss automatic alarm device |
| CN203759174U (en) * | 2014-03-24 | 2014-08-06 | 卫斌鹏 | High-voltage switch cabinet fault comprehensive alarm device |
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| CN103852684A (en) | 2014-06-11 |
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