CN201036995Y - Direct current railway intelligent draining device - Google Patents

Abstract

The utility model provides a DC electric current intelligence discharging device for railway, belonging to an electric current discharging device for railway. The discharging device consists of a discharger and a testing controller which are connected with each other, wherein, one junction point of a buried ground metal construction of the discharger is connected with a reference electrode and the other junction point of the buried ground metal construction of the discharger is connected with a negative bus bar through a shunt resistance and an insulation grid double electrode type transistor; a grid electrode and a drain electrode of the insulation grid double electrode type transistor are both connected with the testing controller; output ends of amplifiers of the testing controller are connected with a single chip processor(IC1) through an AD converter(IC2), input ends of the amplifiers(IC7, IC8, IC9) are connected with the junction joints of the buried ground metal construction; the single chip processor(IC1) is connected with an IGBT combined drive integrated circuit through a transistor, and the IGBT combined drive integrated circuit is connected with the insulation grid double electrode type transistor. The discharging device of the utility model can connect and disconnect the discharging circuit and adjust the discharging rate according to the testing result on one junction point of the buried ground metal construction, thereby the utility model has the advantages of time saving and labor saving effects, good effect and wide practicability.

Description

DC current railway intelligence drain means

Technical field

The utility model relates to a kind of electric current drain means of railway, particularly a kind of DC current railway intelligence drain means.

Background technology

At present, at subway (light rail) in order to reduce the corrosion of stray current to metallic structures, generally be to adopt buried metal works or buried pipeline to be connected, make the stray current that flows in buried metal works or the buried pipeline turn back to substation's rectifier negative pole with rail return current point.Subway (light rail) is the DC current rail transportation system; when detecting or finding that protected buried metal pipeline is in the stray state, all be to be the current drainage of buried metal pipeline grounding jumper with the manual type, its work capacity is big; the current drainage weak effect does not have special device to be its automatic current drainage.

The utility model content

The purpose of this utility model is to provide a kind of work capacity little, and current drainage is effective, automatically the DC current railway of current drainage intelligence drain means.

The purpose of this utility model is achieved in that this drain means is by delf with detect controller and forms, delf and detection control linkage; Delf has buried metal works point of connection, reference electrode, shunt resistance and insulated gate bipolar transistor, a point of connection of buried metal works is connected with reference electrode, another point of connection of buried metal works is connected with negative busbar with insulated gate bipolar transistor by shunt resistance, and the grid of insulated gate bipolar transistor all is connected with the detection controller with drain electrode; Detect controller micro controller system (IC1), AD converter (IC2), serial interface chip (IC3), amplifier, keyboard and display interface chip (IC10), light-emitting diode display (IC11), 4-64 key keypad (IC12) and IGBT combination drive integrated circuit are arranged, micro controller system (IC1) is connected with serial interface chip (IC3), the mouth of amplifier is connected with micro controller system (IC1) by AD converter (IC2), amplifier input terminal is connected with diverter, and the input end of amplifier (IC7, IC8, IC9) is connected with buried metal works point of connection; Micro controller system (IC1) connects by transistor AND gate IGBT combination drive integrated circuit, and IGBT combination drive integrated circuit is connected with insulated gate bipolar transistor; Micro controller system (IC1) is connected with 4-64 key keypad (IC12) with light-emitting diode display (IC11) with the interface circuit (IC10) of keyboard by showing.

Delf has buried metal works point of connection, reference electrode, shunt resistance and insulated gate bipolar transistor, a point of connection of buried metal works is connected with reference electrode, another point of connection of buried metal works is connected with negative busbar with insulated gate bipolar transistor by shunt resistance, and the grid of insulated gate bipolar transistor all is connected with the detection controller with drain electrode; Click-through on the buried metal works is crossed the contactless switch contact and is received diverter (RS1, RS3, RS3) a end, diverter (RS1, RS3, RS3) the other end and insulated gate bipolar transistor (G1, G2, G3) source electrode (CC1, CC2, CC3) link to each other, insulated gate bipolar transistor and series connected electric capacity (C1, C2, C3) resistance (R1, R2, R3) be in parallel, drain electrode (the E1 of insulated gate bipolar transistor, E2, E3) with band secondary contact (K1, K2, K3) fuse (FU1, FU2, FU3) a end links to each other, fuse (FU1, FU2, FU3) the other end links to each other with current-limiting resistance case (RP1), and the other end of current-limiting resistance case (RP1) is received on the negative busbar (FZ).

Detect controller micro controller system (IC1) is arranged, AD converter (IC2), serial interface chip (IC3), amplifier (IC4, IC5, IC6, IC7, IC8, IC9), keyboard and display interface chip (IC10), light-emitting diode display (IC11), 4-64 key keypad (IC12) and IGBT combination drive integrated circuit (IC13, IC14, IC15), 10 pin of micro controller system (IC1), 11 pin respectively with 1 pin of serial interface chip (IC3), 4 pin connect, amplifier (IC4, IC5, IC6, IC7, IC8, IC9) mouth (AIN0), (AIN1), (AIN2), (AIN3), (AIN4), (AIN5) AIN0 with AD converter (IC2) holds (1 pin), AIN1 holds (2 pin), AIN2 holds (3 pin), AIN3 holds (4 pin), AIN4 holds (5 pin), AIN5 end (6 pin) connects, the CLK end (18 pin) of AD converter (IC2), DIN holds (17 pin), DOUT holds (16 pin), CS end (15 pin) respectively with the INT1 end (13 pin) of micro controller system (IC1), INT0 (12 pin), T1 holds (15 pin), T0 end (14 pin) connects, amplifier (IC4, IC5, IC6) input end is by resistance (R5, R6), (R9, R10), (R12, R13) with diverter (RS1), (RS2), (RS3) connect, amplifier (IC7, IC8, IC9) input end is by resistance (R17, R18), (R20, R21), (R24, R25) with buried metal works point of connection (DV1, DV2), (DV3, DV4) (DV5, DV6) connect, micro controller system (IC1) is by transistor AND gate IGBT combination drive integrated circuit (IC13 ~ IC15) connect, IGBT combination drive integrated circuit (IC13-IC15) is connected with insulated gate bipolar transistor, point (DV2) on the buried metal works, (DV4), (DV6) with reference electrode Cu/CuSO4 (CB1), (CB2), (CB3) a end is by resistance (R17, R18), (R20, R21), (R24, R25) receive amplifier (IC7, IC8, IC9) both positive and negative polarity, anodal by resistance (R16), (R23), (R26) receive amplifier (IC7, IC8, IC9) mouth, receive the interface AIN3 end (4 pin) of A/D converter (IC2) then, AIN4 holds (5 pin), AIN5 holds (6 pin), amplifier (IC4, IC5, IC6) negative pole is by resistance (R19), (R22), (R27) receive on the ground wire of circuit card, diverter (RS1), (RS2), (RS3) two ends are respectively by resistance (R5, R6), (R9, RI0), (R12, R13) receive amplifier (IC4, IC5, IC6) just, negative pole, anodal by resistance (R4), (R8), (R14) receive amplifier (IC4, IC5, IC6) mouth, receive the interface AIN0 end (1 pin) of A/D converter (IC2) then, AIN1 holds (2 pin), AIN2 holds (3 pin), amplifier (IC4, IC5, IC6) negative pole is by resistance (R7), (R11), (R19) receive on the ground wire of circuit card, the P10 end (1 pin) of micro controller system (IC1), P11 holds (2 pin), P12 holds (3 pin), with aerotron (Q1), (Q2), (Q3) base stage connects, aerotron (Q1), (Q2), (Q3) emitter and IGBT combination drive integrated circuit (IC13, IC14, IC15) input port (16 pin) connects, 1 pin of IGBT combination drive integrated circuit, 2 pin are connected with 9 pin by electric capacity respectively, 9 pin are connected with the drain electrode of insulated gate bipolar transistor, IGBT combination drive integrated circuit (IC13, IC14, IC15) 3 pin are by resistance (R30), (R33), (R36) with insulated gate bipolar transistor (D1), (D2), (D3) grid connects, IGBT combination drive integrated circuit (IC13, IC14, IC15) 15 pin are received on the circuit board ground; D0 (12 pin), the D1 (13 pin) of the P00 of micro controller system (IC1) end (39 pin), P01 end (38 pin), P02 end (37 pin), P03 end (36 pin), P04 end (35 pin), P05 end (34 pin), P06 end (33 pin), P07 end (32 pin), P20 end (21 pin), P21 end (22 pin), P22 (23 pin) and the interface circuit (IC10) of demonstration and keyboard, D2 (14 pin), D3 (15 pin), D4 (16 pin), D5 (17 pin), D6 (18 pin), D7 (19 pin),

(22 pin), A0 (21 pin), RESET (9 pin) connect, show and OUTA0 (27 pin), the OUTA1 (26 pin) of the interface circuit (IC10) of keyboard, OUTA2 (25 pin), OUTA3 (24 pin), OUTB0 (31 pin), OUTB1 (30 pin), OUTB2 (29 pin), OUTB3 (28 pin),

(23 pin) is connected (IC11) with light-emitting diode display, RL0 (IC10) (38), RL1 (39), RL2 (1), RL3 (2), RL4 (5), RL5 (6), RL6 (7), RL7 (8), SHIFT (36), CNTL/STB (37) and 4-64 key keypad (IC12) are connected.

Beneficial effect: owing to adopt such scheme; the electric current drain means of this railway is intelligent drain means; it can be according to the polarization potential of the protected buried metal works of real-time detection; judge whether it is in etch state; if be in etch state; then detect controller control delf discharge capacity; otherwise cut off the delf main channel; avoid strengthening the electrocorrosion of the buried metal works that does not carry out electrical drainage protection; and with the current drainage mode of operation and detect information transfer to far-end detect and control convenience in, work capacity is little, current drainage is effective; automatically current drainage has reached the purpose of this utility model.

This drain means; can the shape of subway (light rail) buried metal works or buried pipeline and rail return current point be detected very much; any testing result on the buried metal works is connected by insulated gate bipolar transistor; disconnect the current drainage path and regulate discharge capacity; during the mode of operation of drain means is monitored to other by the RS485 interface teletransmission of standard; so that operating personal is in time understood the mode of operation of drain means; the normal operation of assurance equipment; solved the problem of protected buried metal works directional drainage; and guarantee when the buried metal works is in the stray precarious position; just carry out automatically; limit discharge capacity simultaneously; avoid flow excessive, strengthened the electrocorrosion of the metallic conduit of protecting, time saving and energy saving; effective, have practicality widely.

Description of drawings

Fig. 1 is the utility model power circuit schematic diagram.

Fig. 2 is that the utility model detects and the control setup schematic diagram.

The specific embodiment

Embodiment 1: in the utility model, CB1, CB2, CB3 are the Cu/CuSO4 reference electrode; RS1, RS2, RS3 are diverter; Insulated gate bipolar transistor D1, D2, D3, model is EX841; C1, R1, C2, R2, C3, R3 are the capacitance-resistance absorption plant; FU1, FU2, FU3 are fuse; K1, K2, K3 are the fuse contact; RP1 is the high-power resistance case; FZ is a negative busbar; Micro controller system IC1, model is: 89C51; A/D converter IC2, model is: TLC2543; Serial interface chip IC3, model is: 75LBC184; Amplifier IC4, IC5, IC6, IC7, IC8, IC9, model is: OP07; The interface circuit IC10 of demonstration and keyboard, model is: 8279; 4-8 position light-emitting diode display IC11; 4-64 key keypad IC12; IGBT combination drive IC 13, IC14, IC15, model is: EXB841.

It comprises this drain means delf and detects the controller composition, and this drain means can detect control No. three delfs simultaneously and carry out current drainage.Among Fig. 1, on the buried metal works, put DV1, DV3, DV5 receives diverter RS1, RS2, the end FL1 of RS3, FL3, FL5, the other end FL2 of diverter, FL4, FL6 and insulated gate bipolar transistor D1, D2, the source electrode CC1 of D3, CC2, CC3 links to each other, insulated gate bipolar transistor and capacitance-resistance absorption plant R1-C1, R2-C2, the R3-C3 branch road links to each other, fuse FU1, FU2, FU3 plays overcurrent protection, this fuse is the fuse of band secondary contact, secondary contact are mainly the on off mode that detection control apparatus provides power circuit, K1, K2, K3 is a status signal; More than after three circuit parallel connections, RP1 links to each other with the current-limiting resistance case, the current-limiting resistance case plays metering function.The other end of current-limiting resistance case is received on the negative busbar FZ, put DV1 on the buried metal works, DV3, DV5 and Cu/CuSO4 reference electrode CB1, CB2, the end DV2 of CB3, DV4, DV6 is by resistance R 17,-R18, R20-R21, R24-R25 receives the amplifier IC7 of single chip circuit, IC8, the both positive and negative polarity of IC9, anodal by resistance R 16, R23, R26 receives amplifier IC7, IC8, the output terminals A IN3 of IC9, AIN4, AIN5, receive an A/D translation interface AIN3 of micro controller system then, AIN4, AIN5, negative pole is by resistance R 19, R22, R27 receives circuit board ground GND; Diverter two ends FL1-FL2, FL3-FL4, FL5-FL6 is by resistance R 5-R6, R9-R10, R12-R13 receives the amplifier IC4 of single chip circuit, IC5, the both positive and negative polarity of IC6, anodal by resistance R 4, R8, R14 receives amplifier IC4, IC5, the output terminals A IN0 of IC6, AIN1, AIN2, receive an A/D translation interface AIN0 of micro controller system then, AIN1, AIN2, negative pole is by resistance R 7, R11, R15 receives circuit board ground GND, DV1 and DV2 in the major loop, DV3 and DV4, DV5 and DV6 are the measurement points that enters micro controller system detection control apparatus three road drainage currents.Micro controller system IC1 port is by control aerotron Q1, Q2, the base stage of Q3, produce the pulsatory current of PWM at the emitter of aerotron, by resistance R 29, R32, the combination drive IC 13 of R35 input IGBT, IC14, the input port of IC15, corresponding delivery port is received circuit board ground GND, another delivery port of IGBT combination drive integrated circuit is by resistance R 30, R33, R36 receives insulated gate bipolar transistor D1, D2, the grid G 1 of D3, G2, G3, IGBT combination drive IC 13, IC14, two mouths in addition of IC15 are by capacitor C 4-C5, C6-C7, C8-C9 receives insulated gate bipolar transistor D1, D2, the drain electrode E1 of D3, E2, E3.

The micro controller system that detects in the controller is the MCS51 series monolithic.Described micro controller system expands serial interface chip IC3 and keyboard and display interface chip IC10.It is standard RS485 signal that serial interface chip IC3 detects information conversion with drain means, is sent to the far-end control convenience, is convenient to remote monitoring; Keyboard and display interface can be issued Single Chip Microcomputer (SCM) system with instruction, and is convenient to on-the-spot the detection and commissioning device.

Six measurement point signals of three diverters in the major loop enter op amp IC4, IC5, IC6 and peripheral resistance R 4-R15 respectively and constitute differential amplifier, after amplifying, signal sends into input end AIN0, AIN1, the AIN2 of A/D converter, IC2 is an A/D converter, adopts TLC2543 serial 12 bit A/D converters of TI company.IC1 is a micro controller system, adopt 89C51, it is the control core of total system, A/D converter IC2 gathers 6 tunnel analog signal AIN0, AIN1, AIN2, AIN3, AIN4, the AIN5 timesharing of input, transformation result is received by the P35 termination of micro controller system, the operation of P32 end control AD converter, the P33 end provides clock to AD converter, the enable operation of P34 end control AD converter.The signal of micro controller system collection is sent into specified memory, whether three tunnel polarization potential signals of real-time judge collection are in the corrosion risk range, if surpass dangerous voltage, by P10, the P11 of micro controller system, the base stage that P12 controls aerotron Q1, Q2, Q3, produce the pulsatory current of PWM at its emitter, input IGBT combination drive IC 13, IC14, IC15 input port, the voltage signal of IGBT combination drive integrated circuit generation PWM are controlled the switching of insulated gate bipolar transistor D1, D2, D3 and are used to regulate the equivalent resistance of discharge capacity.3 on off mode K1, K2 of major loop, K3 link to each other with P15, the P16 of micro controller system IC1, the port of P1, the state of micro controller system timing acquiring P15, P16, P17 port, thus understand the state status of major loop in real time.Serial interface chip IC3, its model is 75LBC184, and standard RS485 interface S1 and S2 mainly are provided, so that the mode of operation of delf is sent to other monitored control system.IC10 is the interface circuit of demonstration and keyboard, and IC11 is a display module, and IC12 is a Keysheet module.By keyboard the parameter that needs can be set, display module can show the running state of polarization potential, drainage current and main device.

Claims (3)

1. DC current railway intelligence drain means is characterized in that: this drain means is by delf and detect controller and forms, delf and detection control linkage; Delf has buried metal works point of connection, reference electrode, shunt resistance and insulated gate bipolar transistor, a point of connection of buried metal works is connected with reference electrode, another point of connection of buried metal works is connected with negative busbar with insulated gate bipolar transistor by shunt resistance, and the grid of insulated gate bipolar transistor all is connected with the detection controller with drain electrode; Detect controller micro controller system (IC1), AD converter (IC2), serial interface chip (IC3), amplifier, keyboard and display interface chip (IC10), light-emitting diode display (IC11), 4-64 key keypad (IC12) and IGBT combination drive integrated circuit are arranged, micro controller system (IC1) is connected with serial interface chip (IC3), the mouth of amplifier is connected with micro controller system (IC1) by AD converter (IC2), amplifier input terminal is connected with diverter, and the input end of amplifier (IC7, IC8, IC9) is connected with buried metal works point of connection; Micro controller system (IC1) connects by transistor AND gate IGBT combination drive integrated circuit, and IGBT combination drive integrated circuit is connected with insulated gate bipolar transistor; Micro controller system (IC1) is connected with 4-64 key keypad (IC12) with light-emitting diode display (IC11) with the interface circuit (IC10) of keyboard by showing.

2. DC current railway intelligence drain means according to claim 1, it is characterized in that: delf has buried metal works point of connection, reference electrode, shunt resistance and insulated gate bipolar transistor, a point of connection of buried metal works is connected with reference electrode, another point of connection of buried metal works is connected with negative busbar with insulated gate bipolar transistor by shunt resistance, and the grid of insulated gate bipolar transistor all is connected with the detection controller with drain electrode; Click-through on the buried metal works is crossed the contactless switch contact and is received diverter (RS1, RS3, RS3) a end, diverter (RS1, RS3, RS3) the other end and insulated gate bipolar transistor (G1, G2, G3) source electrode (CC1, CC2, CC3) link to each other, insulated gate bipolar transistor and series connected electric capacity (C1, C2, C3) resistance (R1, R2, R3) be in parallel, drain electrode (the E1 of insulated gate bipolar transistor, E2, E3) with band secondary contact (K1, K2, K3) fuse (FU1, FU2, FU3) a end links to each other, fuse (FU1, FU2, FU3) the other end links to each other with current-limiting resistance case (RP1), and the other end of current-limiting resistance case (RP1) is received on the negative busbar (FZ).

3. DC current railway intelligence drain means according to claim 1, it is characterized in that: detecting controller has micro controller system (IC1), AD converter (IC2), serial interface chip (IC3), amplifier (IC4, IC5, IC6, IC7, IC8, IC9), keyboard and display interface chip (IC10), light-emitting diode display (IC11), 4-64 key keypad (IC12) and IGBT combination drive integrated circuit (IC13, IC14, IC15), 10 pin of micro controller system (IC1), 11 pin respectively with 1 pin of serial interface chip (IC3), 4 pin connect, amplifier (IC4, IC5, IC6, IC7, IC8, IC9) mouth (AIN0), (AIN1), (AIN2), (AIN3), (AIN4), (AIN5) AIN0 with AD converter (IC2) holds (1 pin), AIN1 holds (2 pin), AIN2 holds (3 pin), AIN3 holds (4 pin), AIN4 holds (5 pin), AIN5 end (6 pin) connects, the CLK end (18 pin) of AD converter (IC2), DIN holds (17 pin), DOUT holds (16 pin), CS end (15 pin) respectively with the INT1 end (13 pin) of micro controller system (IC1), INT0 (12 pin), T1 holds (15 pin), T0 end (14 pin) connects, amplifier (IC4, IC5, IC6) input end is by resistance (R5, R6), (R9, R10), (R12, R13) with diverter (RS1), (RS2), (RS3) connect, amplifier (IC7, IC8, IC9) input end is by resistance (R17, R18), (R20, R21), (R24, R25) with buried metal works point of connection (DV1, DV2), (DV3, DV4) (DV5, DV6) connect, micro controller system (IC1) is by transistor AND gate IGBT combination drive integrated circuit (IC13 ~ IC15) connect, IGBT combination drive integrated circuit (IC13-IC15) is connected with insulated gate bipolar transistor, point (DV2) on the buried metal works, (DV4), (DV6) with reference electrode Cu/CuSO4 (CB1), (CB2), (CB3) a end is by resistance (R17, R18), (R20, R21), (R24, R25) receive amplifier (IC7, IC8, IC9) both positive and negative polarity, anodal by resistance (R16), (R23), (R26) receive amplifier (IC7, IC8, IC9) mouth, receive the interface AIN3 end (4 pin) of A/D converter (IC2) then, AIN4 holds (5 pin), AIN5 holds (6 pin), amplifier (IC4, IC5, IC6) negative pole is by resistance (R19), (R22), (R27) receive on the ground wire of circuit card, diverter (RS1), (RS2), (RS3) two ends are respectively by resistance (R5, R6), (R9, R10), (R12, R13) receive amplifier (IC4, IC5, IC6) just, negative pole, anodal by resistance (R4), (R8), (R14) receive amplifier (IC4, IC5, IC6) mouth, receive the interface AIN0 end (1 pin) of A/D converter (IC2) then, AIN1 holds (2 pin), AIN2 holds (3 pin), amplifier (IC4, IC5, IC6) negative pole is by resistance (R7), (R11), (R19) receive on the ground wire of circuit card, the P10 end (1 pin) of micro controller system (IC1), P11 holds (2 pin), P12 holds (3 pin), with aerotron (Q1), (Q2), (Q3) base stage connects, aerotron (Q1), (Q2), (Q3) emitter and IGBT combination drive integrated circuit (IC13, IC14, IC15) input port (16 pin) connects, 1 pin of IGBT combination drive integrated circuit, 2 pin are connected with 9 pin by electric capacity respectively, 9 pin are connected with the drain electrode of insulated gate bipolar transistor, IGBT combination drive integrated circuit (IC13, IC14, IC15) 3 pin are by resistance (R30), (R33), (R36) with insulated gate bipolar transistor (D1), (D2), (D3) grid connects, IGBT combination drive integrated circuit (IC13, IC14, IC15) 15 pin are received on the circuit board ground; D0 (12 pin), the D1 (13 pin) of the P00 of micro controller system (IC1) end (39 pin), P01 end (38 pin), P02 end (37 pin), P03 end (36 pin), P04 end (35 pin), P05 end (34 pin), P06 end (33 pin), P07 end (32 pin), P20 end (21 pin), P21 end (22 pin), P22 (23 pin) and the interface circuit (IC10) of demonstration and keyboard, D2 (14 pin), D3 (15 pin), D4 (16 pin), D5 (17 pin), D6 (18 pin), D7 (19 pin),

(22 pin), A0 (21 pin), RESET (9 pin) connect, show and OUTA0 (27 pin), the OUTA1 (26 pin) of the interface circuit (ICi0) of keyboard, OUTA2 (25 pin), OUTA3 (24 pin), OUTB0 (31 pin), OUTB1 (30 pin), OUTB2 (29 pin), OUTB3 (28 pin),

(23 pin) is connected (IC11) with light-emitting diode display, RL0 (IC10) (38), RL1 (39), RL2 (1), RL3 (2), RL4 (5), RL5 (6), RL6 (7), RL7 (8), SHIFT (36), CNTL/STB (37) and 4-64 key keypad (IC12) are connected.

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