CN2938567Y - Explosive-proof compatible safe four-quadrant frequency converter speed regulation system of digital mine hoist - Google Patents

Explosive-proof compatible safe four-quadrant frequency converter speed regulation system of digital mine hoist Download PDF

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Publication number
CN2938567Y
CN2938567Y CNU2006201323114U CN200620132311U CN2938567Y CN 2938567 Y CN2938567 Y CN 2938567Y CN U2006201323114 U CNU2006201323114 U CN U2006201323114U CN 200620132311 U CN200620132311 U CN 200620132311U CN 2938567 Y CN2938567 Y CN 2938567Y
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China
Prior art keywords
interface
rectification
inversion
joint oralia
circuit
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Expired - Lifetime
Application number
CNU2006201323114U
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Chinese (zh)
Inventor
许开成
李英
陆文涛
李愈清
张杨
刘强
赵颖秋
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Tangshan Kaicheng Electronic Control Equipment Group Co., Ltd.
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TANGSHAN KAICHENG ELECTRICAL APPLIANCES CO Ltd
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Priority to CNU2006201323114U priority Critical patent/CN2938567Y/en
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Publication of CN2938567Y publication Critical patent/CN2938567Y/en
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Abstract

The utility model discloses a full digital shaft hoist explosion-proof four-quadrant variable speed control system, used for variable frequency speed control of conveyance hoist drive motor in coal shaft, comprising a rectifier circuit, a DC intermediate circuit, an inverter circuit and a control circuit. The utility model adjusts the frequency and voltage of the motor power supply and realizes motor speed control by controlling signals of the rectifier circuit, the DC intermediate circuit and the inverter circuit with the control circuit. The utility model can realize starting, speed control, deceleration and braking of the hoist automatically and is characterized by wide range and high precision of speed control, convenient operation, high efficiency, energy savings, safety and reliability.

Description

Digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating system
Technical field
The utility model relates to a kind of digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating system, is used for the frequency control to transportation elevator drive motor under the coal mine.
Background technology
At present, the drive motor of transportation elevator generally adopts three-phase winding-type asynchronous motor under the coal mine, its speed regulating method adopts and be connected in series metallic resistance in the motor rotor loop, excises the purpose that resistance reaches speed governing with drum controller, and this method has following shortcoming:
(1) because the existence of a large amount of metallic resistances is arranged in this speed-regulating control device, institute is so that this device is difficult to make the explosion-proof type electric equipment, even established anti-explosion hoisting machine, resistance gives out a large amount of heats owing to be in operation, and heat dissipation problem is difficult for solving in the Flameproof box, so cause the electrical equipment accident continuous, become a big hidden danger of Safety of Coal Mine Production;
(2) a large amount of metallic resistances have occupied very big area, have increased the area of the automatically controlled chambers of down-hole winding houses, and the preliminary that has increased chamber is greatly used;
(3) rheostatic speed regulation belongs to step speed regulation, open loop control, and speed adjustable range is little, and adjusting speed accuracy is low, creep speed is wayward, is especially slowing down and weight when transferring operation need dynamic braking and rotor resistance compounding practice, wayward, poor safety performance, and waste electric energy.
Current, also have and adopt hydraulic hoisting machine, it has solved the shortcoming of above-mentioned elevator to a certain extent, but drawbacks such as there is leakage of oil in hydraulic hoisting machine, floor space is big, transmission efficiency is low, service work is heavy, later stage expense height, the also needs of incompatibility Safety of Coal Mine Production.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating system, and it has overcome the deficiencies in the prior art, and installation and maintenance is simple and convenient, and is safe in utilization efficient.
For reaching the purpose that solves the problems of the technologies described above, the utility model is achieved in that it comprises rectification circuit, direct-flow intermediate circuit, inverter circuit and control circuit.
Rectification circuit comprises input reactance device, charging resistor, charging contactor and rectification unit, and rectification unit is made up of three groups of Intelligent Power Module connection in series-parallel;
The flat wave capacitor group that direct-flow intermediate circuit is made up of three group capacitors and the connection in series-parallel of grading resistor device is formed;
Inverter circuit is made of inversion unit, and inversion unit is made up of three groups of Intelligent Power Module connection in series-parallel;
Control circuit comprises control transformer, charge relay, rectifier power source, rectification side DC power supply, inversion side DC power supply, rectification side joint oralia, rectification side master control borad, rectification side display screen and inversion side joint oralia, inversion side master control borad, inversion side display screen and current feedback plate, speed feedback plate;
The incoming line of control transformer of the present utility model links to each other with the electrical network input power cord, and is connected to the main contacts of charging contactor; The charging resistor that is connected in parallel on this main contacts is connected with reactor; The output line of control transformer is connected with the terminal of rectifier power source, the B of output line receives charging contactor one side mutually, the charging contactor opposite side is received on the normally opened contact of charge relay, the opposite side of this group normally opened contact of charge relay is received the C phase of control transformer output line, the two ends of charge relay are connected on respectively on interface+24 and interface COM of rectification side joint oralia, the output interface C+ of rectifier power source and C-receive respectively on the interface C+ and C-of rectification side DC power supply and inversion side DC power supply, the interface 24 of rectification side DC power supply is received on interface+24 of rectification side joint oralia, the interface of the interface of rectification side DC power supply-receive rectification side joint oralia-, the interface 24 of inversion side DC power supply is received interface+24 of inversion side joint oralia, the interface of the interface of inversion side DC power supply-receive inversion side joint oralia-;
The input of rectification unit is connected with reactor, and the output of rectification unit is received on the dc bus, and is in parallel with the flat wave capacitor group, receives the input of inversion unit then, and the output of inversion unit is connected with motor; The driving interface JGB1 of rectification unit, JGB2, JGB3 by three winding displacements respectively with the interface JGB1 of rectification side joint oralia, JGB2, JGB3 links to each other, the terminal B+ of the interface JBUS of rectification side joint oralia, B-is connected with dc bus respectively, the terminal L1 of the interface JL of rectification side joint oralia, L2, L3 links to each other with the incoming line of control transformer respectively, the interface JCM of rectification side joint oralia links to each other by the interface JP of winding displacement with rectification side master control borad, the interface JD of rectification side master control borad links to each other by the interface JD of winding displacement with rectification side display screen, the interface 13 of rectification side master control borad links to each other with interface+24 of inversion side joint oralia, and the interface 14 of rectification side master control borad links to each other with the interface FBK of inversion side joint oralia;
The driving interface JGB1 of inversion unit, JGB2, JGB3 by three winding displacements respectively with the interface JGB1 of inversion side joint oralia, JGB2, JGB3 links to each other, the terminal B+ of the interface JBUS of inversion side joint oralia, B-is connected with dc bus respectively, the terminal L1 of the interface JL of inversion side joint oralia, L2, L3 links to each other with the incoming line of control transformer respectively, the interface JCM of inversion side joint oralia links to each other by the interface JP of winding displacement with inversion side master control borad, the interface JD of inversion side master control borad links to each other by the interface JD of winding displacement with inversion side display screen, the interface J02 of inversion side master control borad links to each other with the interface J0 of current feedback plate by winding displacement, and the interface J01 of inversion side master control borad links to each other with the interface J0 of speed feedback plate by winding displacement.
Compared with prior art, the utlity model has following advantage: it can realize the multiple functions such as startup, speed governing, deceleration and braking of elevator automatically, speed-regulating range width, the adjusting speed accuracy height, easy to operate, energy-efficient, volume is little, and installation and maintenance is more efficient and convenient, and is non-maintaining substantially, use reliably the fail safe that has improved the colliery elevator system greatly.
Description of drawings
Accompanying drawing 1 is a circuit block diagram of the present utility model;
Accompanying drawing 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
The utility model comprises rectification circuit 1, direct-flow intermediate circuit 2, inverter circuit 3 and control circuit 4; Rectification circuit 1 comprises input reactance device Lin, charging resistor R1, charging contactor KM and rectification unit CON, and rectification unit CON is made up of three groups of Intelligent Power Module IPM connection in series-parallel; The flat wave capacitor group R-C that direct-flow intermediate circuit 2 is made up of three group capacitor C and grading resistor device R3 connection in series-parallel forms; Inverter circuit 3 is made of inversion unit INV, and inversion unit INV is made up of three groups of Intelligent Power Module IPM connection in series-parallel; Control circuit 4 comprises control transformer B, charge relay KJ, rectifier power source DY, rectification side DC power supply JP1, inversion side DC power supply JP2, rectification side joint oralia PIB1, rectification side master control borad MSC1, rectification side display screen PV1 and inversion side joint oralia PIB2, inversion side master control borad MSC2, inversion side display screen PV2 and current feedback plate PID1, speed feedback plate PID2;
Incoming line L1, the L2 of control transformer B, L3 link to each other with the electrical network input power cord, and are connected to the main contacts of charging contactor KM; The charging resistor R1 that is connected in parallel on this main contacts connects with reactor Lin; The terminal R2 of the output line of control transformer B and rectifier power source DY, S2, T2 connects, the B of output line receives charging contactor KM one side mutually, charging contactor KM opposite side is received on the normally opened contact of charge relay KJ, the opposite side of this group normally opened contact of charge relay KJ is received the C phase of control transformer B output line, the two ends of charge relay KJ are connected on respectively on interface+24 and interface COM of rectification side joint oralia PIB1, the output interface C+ of rectifier power source DY and C-receive respectively on the interface C+ and C-of rectification side DC power supply JP1 and inversion side DC power supply JP2, the interface 24 of rectification side DC power supply JP1 is received on interface+24 of rectification side joint oralia PIB1, the interface of the interface of rectification side DC power supply JP1-receive rectification side joint oralia PIB1-, interface+24 that the interface 24 of inversion side DC power supply JP2 is received inversion side joint oralia PIB2, the interface of the interface of inversion side DC power supply JP2-receive inversion side joint oralia PIB2-;
The input of rectification unit CON is connected with reactor Lin, the output of rectification unit CON is by on dc bus BUS+ and BUS-, R-C is in parallel with the flat wave capacitor group, receives the input of inversion unit INV then, and the output of inversion unit INV is connected with motor M; The driving interface JGB1 of rectification unit CON, JGB2, the winding displacement of JGB3 by three 14 cores respectively with the interface JGB1 of rectification side joint oralia PIB1, JGB2, JGB3 links to each other, the terminal B+ of the interface JBUS of rectification side joint oralia PIB1, B-is connected with BUS-with dc bus BUS+ respectively, the terminal L1 of the interface JL of rectification side joint oralia PIB1, L2, L3 respectively with the incoming line L1 of control transformer B, L2, L3 links to each other, the interface JCM of rectification side joint oralia PIB1 links to each other with the interface JP of rectification side master control borad MSC1 by one 26 core winding displacement, the interface JD of rectification side master control borad MSC1 links to each other with the interface JD of rectification side display screen PV1 by one 16 core winding displacement, the interface 13 of rectification side master control borad MSC1 links to each other with interface+24 of inversion side joint oralia PIB2, and the interface 14 of rectification side master control borad MSC1 links to each other with the interface FBK of inversion side joint oralia PIB2;
The driving interface JGB1 of inversion unit INV, JGB2, JGB3 by three 14 core winding displacements respectively with the interface JGB1 of inversion side joint oralia PIB2, JGB2, JGB3 links to each other, the terminal B+ of the interface JBUS of inversion side joint oralia PIB2, B-is connected with BUS-with dc bus BUS+ respectively, the terminal L1 of the interface JL of inversion side joint oralia PIB2, L2, L3 respectively with the incoming line L1 of control transformer B, L2, L3 links to each other, the interface JCM of inversion side joint oralia PIB2 links to each other with the interface JP of inversion side master control borad MSC2 by one 26 core winding displacement, the interface JD of inversion side master control borad MSC2 links to each other with the interface JD of inversion side display screen PV2 by one 16 core winding displacement, the interface J02 of inversion side master control borad MSC2 links to each other with the interface J0 of current feedback plate PID1 by one 10 core winding displacement, and the interface J01 of inversion side master control borad MSC2 links to each other with the interface J0 of speed feedback plate PID2 by one 10 core winding displacement.
When native system send electricity,, charge to flat wave capacitor group R-C so at first pass through charging resistor R1 because flat wave capacitor group R-C both end voltage can not be suddenlyd change; Rectification side master control borad MSC1 control rectification side joint oralia PIB1, PIB1 drives rectification unit CON by rectification side joint oralia, realizes controlled rectification; The interface JBUS of rectification side joint oralia PIB1 detects the voltage of dc bus BUS, after charging was finished, dc bus BUS reached operating voltage, drove charge relay KJ by interface FBK then, drive charging contactor KM by charge relay KJ, charging resistor R1 finishes charging; Charging contactor KM is the AC220V coil, this part power supply is provided by control transformer B, rectification circuit becomes direct current with the AC220V power rectifier of control transformer B output, by rectification side DC power supply JP1 and inversion side DC power supply JP2, output DC24V power supply is given rectification side joint oralia PIB1 and inversion side joint oralia PIB2 power supply respectively then; When the interface 10 (analog quantity input positive electricity) of inversion side master control borad MSC2 and interface 11 (analog quantity input negative electricity) when receiving the given signal of winch electric-control system, inversion side master control borad MSC2 determines the frequency of motor output by the calculating and the adjusting of internal current ring and speed ring; This frequency is by the output of the control of 26 core winding displacements (data wire) between inversion side master control borad MSC2 and inversion side joint oralia PIB2 inversion side joint oralia PIB2, inversion side joint oralia PIB2 drives three groups of Intelligent Power Module IPM of inversion unit INV respectively by three 14 core winding displacements, finish the control of frequency, realize the speed governing of motor M with the change of frequency.
Rectification side master control borad MSC1 control rectification side joint oralia PIB1 when motor is in positive power operation, drives rectification unit CON by rectification side joint oralia PIB1, makes the voltage and current same-phase of net side, and power factor is 1; When motor is in the power of bearing operation, utilize AFE (Active Front End active front end) technology, drive rectification unit CON by rectification side joint oralia PIB1, make the voltage and current antiphase of net side, motor resembles and moves the generator, realized the energy feedback grid of motor generation has also been realized electric braking.

Claims (4)

1, a kind of digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating system comprises rectification circuit (1), direct-flow intermediate circuit (2), inverter circuit (3) and control circuit (4), it is characterized in that:
Described rectification circuit (1) comprises input reactance device (Lin), charging resistor (R1), charging contactor (KM) and rectification unit (CON);
The flat wave capacitor group (R-C) that described direct-flow intermediate circuit (2) is made up of three group capacitors (C) and grading resistor device (R3) connection in series-parallel is formed;
Described inverter circuit (3) is made of inversion unit (INV);
Described control circuit (4) comprises control transformer (B), charge relay (KJ), rectifier power source (DY), rectification side DC power supply (JP1), inversion side DC power supply (JP2), rectification side joint oralia (PIB1), rectification side master control borad (MSC1), rectification side display screen (PV1) and inversion side joint oralia (PIB2), inversion side master control borad (MSC2), inversion side display screen (PV2) and current feedback plate (PID1), speed feedback plate (PID2);
2, digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating according to claim 1 system, it is characterized in that: the rectification unit (CON) of described rectification circuit (1) is made up of three groups of Intelligent Power Module (IPM) connection in series-parallel;
3, digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating according to claim 1 system, it is characterized in that: the inversion unit (INV) of described inverter circuit (3) is made up of three groups of Intelligent Power Module (IPM) connection in series-parallel;
4, digital mine hoist explosion-suppression and intrinsic safety four-quadrant frequency variation speed regulating according to claim 1 system, it is characterized in that: the incoming line of control transformer (B) (L1, L2, L3) links to each other with the electrical network input power cord, and is connected to the main contacts of charging contactor (KM); The charging resistor (R1) that is connected in parallel on this main contacts is connected with reactor (Lin); Terminal (the R2 of the output line of control transformer (B) and rectifier power source (DY), S2, T2) connect, the B of output line receives charging contactor (KM) side mutually, charging contactor (KM) opposite side is received on the normally opened contact of charge relay (KJ), the opposite side of this group normally opened contact of charge relay (KJ) is received the C phase of control transformer (B) output line, the two ends of charge relay (KJ) are connected on respectively on the interface (+24) and interface (COM) of rectification side joint oralia (PIB1), the output interface (C+) of rectifier power source (DY) and (C-) receive respectively the interface (C+) of rectification side DC power supply (JP1) and inversion side DC power supply (JP2) and (C-) on, the interface (24) of rectification side DC power supply (JP1) is received on the interface (+24) of rectification side joint oralia (PIB1), the interface (-) of rectification side DC power supply (JP1) is received the interface (-) of rectification side joint oralia (PIB1), the interface (24) of inversion side DC power supply (JP2) is received the interface (+24) of inversion side joint oralia (PIB2), and the interface (-) of inversion side DC power supply (JP2) is received the interface (-) of inversion side joint oralia (PIB2);
The input of rectification unit (CON) is connected with reactor (Lin), the output of rectification unit (CON) receive dc bus (BUS+) and (BUS-) on, (R-C) is in parallel with the flat wave capacitor group, receive the input of inversion unit (INV) then, the output of inversion unit (INV) is connected with motor (M); Driving interface (the JGB1 of rectification unit (CON), JGB2, JGB3) by three winding displacements respectively with the interface (JGB1 of rectification side joint oralia (PIB1), JGB2, JGB3) link to each other, terminal (the B+ of the interface (JBUS) of rectification side joint oralia (PIB1), B-) be connected with (BUS-) with dc bus (BUS+) respectively, terminal (the L1 of the interface (JL) of rectification side joint oralia (PIB1), L2, L3) respectively with the incoming line (L1 of control transformer (B), L2, L3) link to each other, the interface (JCM) of rectification side joint oralia (PIB1) links to each other with the interface (JP) of rectification side master control borad (MSC1) by winding displacement, the interface (JD) of rectification side master control borad (MSC1) links to each other with the interface (JD) of rectification side display screen (PV1) by winding displacement, the interface (13) of rectification side master control borad (MSC1) links to each other with the interface (+24) of inversion side joint oralia (PIB2), and the interface (14) of rectification side master control borad (MSC1) links to each other with the interface (FBK) of inversion side joint oralia (PIB2);
Driving interface (the JGB1 of inversion unit (INV), JGB2, JGB3) by three winding displacements respectively with the interface (JGB1 of inversion side joint oralia (PIB2), JGB2, JGB3) link to each other, terminal (the B+ of the interface (JBUS) of inversion side joint oralia (PIB2), B-) be connected with (BUS-) with dc bus (BUS+) respectively, terminal (the L1 of the interface (JL) of inversion side joint oralia (PIB2), L2, L3) respectively with the incoming line (L1 of control transformer (B), L2, L3) link to each other, the interface (JCM) of inversion side joint oralia (PIB2) links to each other with the interface (JP) of inversion side master control borad (MSC2) by winding displacement, the interface (JD) of inversion side master control borad (MSC2) links to each other with the interface (JD) of inversion side display screen (PV2) by winding displacement, the interface (J02) of inversion side master control borad (MSC2) links to each other with the interface (J0) of current feedback plate (PID1) by winding displacement, and the interface (J01) of inversion side master control borad (MSC2) links to each other with the interface (J0) of speed feedback plate (PID2) by winding displacement.
CNU2006201323114U 2006-08-15 2006-08-15 Explosive-proof compatible safe four-quadrant frequency converter speed regulation system of digital mine hoist Expired - Lifetime CN2938567Y (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101976936A (en) * 2010-10-25 2011-02-16 北京中矿华飞科技有限公司 Explosion-proof and intrinsic safety type high-voltage variable-frequency governor
WO2012010064A1 (en) * 2010-07-22 2012-01-26 荣信电力电子股份有限公司 Mmc-based transformerless four-quadrant high-voltage variable-frequency power supply topology
CN101534091B (en) * 2008-11-19 2012-02-08 范鑫焱 Mine flameproof and intrinsic safety type variable frequency speed control device
CN103051281A (en) * 2013-01-30 2013-04-17 秦皇岛国能石油装备有限公司 High-performance four-quadrant frequency converter
CN103062023A (en) * 2013-01-30 2013-04-24 秦皇岛国能石油装备有限公司 Intelligent linear-motor oil production system
CN103259466A (en) * 2013-04-25 2013-08-21 北京山潜天恒科技有限公司 Driving device for downhole belt conveyor
CN101911463B (en) * 2008-01-08 2013-09-04 Abb技术有限公司 A method for controlling a voltage source converter and a voltage converting apparatus
CN103475194A (en) * 2013-09-16 2013-12-25 北京机械设备研究所 Explosion protection frequency converter for electric locomotive
CN103595266A (en) * 2013-11-21 2014-02-19 青岛威控电气有限公司 Explosion-proof intrinsically safe variable-frequency drive for mining
CN103607123A (en) * 2013-11-21 2014-02-26 青岛威控电气有限公司 Combined four-quadrant coal mine explosion-proof frequency converter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101911463B (en) * 2008-01-08 2013-09-04 Abb技术有限公司 A method for controlling a voltage source converter and a voltage converting apparatus
CN101534091B (en) * 2008-11-19 2012-02-08 范鑫焱 Mine flameproof and intrinsic safety type variable frequency speed control device
WO2012010064A1 (en) * 2010-07-22 2012-01-26 荣信电力电子股份有限公司 Mmc-based transformerless four-quadrant high-voltage variable-frequency power supply topology
CN101976936A (en) * 2010-10-25 2011-02-16 北京中矿华飞科技有限公司 Explosion-proof and intrinsic safety type high-voltage variable-frequency governor
CN103051281A (en) * 2013-01-30 2013-04-17 秦皇岛国能石油装备有限公司 High-performance four-quadrant frequency converter
CN103062023A (en) * 2013-01-30 2013-04-24 秦皇岛国能石油装备有限公司 Intelligent linear-motor oil production system
CN103259466A (en) * 2013-04-25 2013-08-21 北京山潜天恒科技有限公司 Driving device for downhole belt conveyor
CN103475194A (en) * 2013-09-16 2013-12-25 北京机械设备研究所 Explosion protection frequency converter for electric locomotive
CN103595266A (en) * 2013-11-21 2014-02-19 青岛威控电气有限公司 Explosion-proof intrinsically safe variable-frequency drive for mining
CN103607123A (en) * 2013-11-21 2014-02-26 青岛威控电气有限公司 Combined four-quadrant coal mine explosion-proof frequency converter

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