CN101246364A - Double-local fan fault diagnosis and automatic switching closedown integrated device - Google Patents

Double-local fan fault diagnosis and automatic switching closedown integrated device Download PDF

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Publication number
CN101246364A
CN101246364A CNA2008100174722A CN200810017472A CN101246364A CN 101246364 A CN101246364 A CN 101246364A CN A2008100174722 A CNA2008100174722 A CN A2008100174722A CN 200810017472 A CN200810017472 A CN 200810017472A CN 101246364 A CN101246364 A CN 101246364A
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terminal
relay
module
magnetic starter
display board
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CNA2008100174722A
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CN101246364B (en
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侯媛彬
郑英华
白云
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Xian University of Science and Technology
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侯媛彬
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Abstract

The invention discloses a twin portable blower failure diagnosis and automatic switchover closedown integration device. The device comprises a main board, a locking, a display board and a distribution block. The control main board is connected with the display board, the display board is connected with the distribution block through a terminal, the sensor signal input terminals on the control main board, electric relay control output and 36V alternating current input terminals are connected with the distribution block. Corresponding on-the-spot apparatus magnetic starters are controlled through gathering down-hole face of heading sensor signal output to monitor the operating status of main and sub portable blower and working area in order to realize collection mash gas fault location indication and twin portable blower automatic switchover control. The distribution block provides all input and output terminals of device. The circuit accords local safe claim, solves a series of difficult problems such as twin portable blower failure diagnosis and automatic switching and monitoring, mash gas fault location, wind, electric and gas reliable locking and so on for middle or small coal mines without monitoring executive supervisor, and can be abroad used in mash gas mines.

Description

Double local leaf's fault diagnosis and automatic switchover locking integrating device
Technical field
The present invention relates to safety monitoring device, specifically relate to the double local leaf's fault diagnosis and the automatic switchover locking integrating device of gas localization of fault, double local leaf's automatic switchover, locking and control.
Background technology
In the actual production of gaseous mine, except the ventilation of coal master's fan, each workplace also wants portable blower to cooperate ventilation.According to national safety regulations in coal mine requirement, coalmine ventilation can not be interrupted, and must be dual power supply.But in the stronger KJ66 of monitoring function, KJ69 system, do not relate to double local leaf's fault diagnosis and automatic switchover problem.In the KJ4 monitoring system, also can only monitor and to control harmful gas.When monitoring out after concentration transfinites, need artificial treatment.Existing like product adopts discrete component or is the control core with the single-chip microcomputer, and the subject matter of existence is: the major-minor portable blower that has switches ineffective or exists automatic switchover and locking between the no gas localization of fault of being interrupted, having, the blower fan that has, blower fan separate etc. to the supervision of the locking of driving face power switch and fan operation state.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, easy to use, the automaticity height is based on multi-functional realization collection gas localization of fault, double local leaf's automatic switchover, locking and control, can be sent to double local leaf's fault diagnosis and the automatic switchover locking integrating device that remote monitoring is realized on ground by the monitoring system underground substation.
For switching ineffective or exist, is interrupted the major-minor portable blower that overcomes existing like product, the deficiency of no gas localization of fault, technical scheme of the present invention is to solve like this: comprise by a control main board, locking and display board, a terminal block is formed, its improvements of the present invention are that described control main board comprises by crossing flow fuse and are connected with the intrinsic safety transformer, fuse is connected with interlock relay, interlock relay is connected with rectifier bridge, rectifier bridge is connected with the current limliting module, the current limliting module is connected with power transfer module, power transfer module is connected with the DC voltage conversion chip, the DC voltage conversion chip is connected with digital signal processing chip, digital signal processing chip respectively and Sheffer stroke gate, the optocoupler module, interface, expansion mouthful connection, the optocoupler module successively respectively with first relay, second relay, the 3rd relay, the 4th relay connects, the optocoupler module is connected with relay control output and 36V alternating current input terminal module simultaneously, the optocoupler module is also distinguished Sheffer stroke gate, the terminal mouth that is connected with display board connects, not gate is connected with sensor signal input terminal module, described locking and display board are to be connected with the 6th relay with the 5th relay respectively by the terminal that terminal block connects, the terminal that is connected with mainboard is connected with display lamp respectively with for lock modules, lock modules respectively with the 5th relay, the 6th relay connects, the 7th relay is connected with the power supply handover module, the pressure-stabilizing constant flow charging module is connected with voltage comparator, and described terminal block first row successively is respectively the terminal that main station is fanned magnetic starter from right to left; The centre is the terminal of secondary portable blower magnetic starter; The left side is respectively the connection terminal of the control end of workplace magnetic starter; Wherein device is delivered to the connection terminal of the control end of magnetic starter; The connection terminal of the power end that magnetic starter provides device, the connection terminal of every group of sequence number is connected with sensor respectively, and the connection terminal of every group of sequence number is connected with sensor respectively; " master cuts, pair is cut and the worker cuts " terminal of the 3rd row is connected on respectively between the magnetic starter power supply terminal and the right side terminal below the magnetic starter of major and minor portable blower and working surface coal mining machine, and the netting twine connection terminal is delivered to the fire damp substation.
The terminal that is connected with mainboard on the terminal mouth that is connected with display board on the master control borad and the display board connects, being connected on the terminal that is connected with terminal block on the display board and the terminal block; Sensor signal input terminal on the master control borad, relay control output and 36V alternating current input terminal are connected with terminal block respectively.
Control main board is core with DSP, send into DSP by gathering five tunnel sensor signals (switching value) data respectively, after the DSP computing, make a strategic decision, the corresponding field apparatus magnetic starter of output control, be driving face, major and minor portable blower magnetic starter, thereby reach the duty of major and minor portable blower of control and workplace.Locking and display board are finished T1, T2, T3, T4, T5 in T4 firedamp sensor, the wind when T5 air quantity pressure transducer exceeds standard, gas, the electric interlock function tunnel and are exceeded standard and report to the police and the function of locating and monitoring.Terminal block mainly provides whole inputs, the lead-out terminal of this device, to be user-friendly to.
This device is co-ordinations such as CPU (central processing unit), cooperated power supply power module, control module, locking and alarm indication module, communication module with DSP (TMS320LF2407A), finishes double local leaf's fault diagnosis and automatic switchover blocking function.Simultaneously, the design of this device is allowed some leeway, and upgrading for the expansion of system brings convenience.In circuit design,, all adopt intrinsically safe circuit according to State Standard of the People's Republic of China (GB 3836.4-2000, eqv IEC 60079-11:1999).All input signals are all isolated through photoelectricity and are sent into DSP and handle, and output signal is isolated back control field apparatus through relay, and that device has been taked is soft, the interference protection measure of hardware cooperation, guarantees downhole safety work.Device basic mechanical design feature index:
1) Zhuan Zhi power consumption 7W
2) input voltage (2 tunnel) AC 36V/50HZ
3) output voltage (1 tunnel) DC 5V
4) device input capacity
Have 7 tunnel (every road 2 cores)
Wherein: No. 5 sensor T1, T2, T3, T4, T5, each two line is switching value, and every road working current is 0.5 milliampere, and sensor T1, T2, T3, T4 are the gas cutoff instrument that is installed in down-hole coal excavation zone diverse location; T5 is air quantity (blast) sensor.
Wherein: the 2 tunnel is the 36V power supply of major and minor portable blower, and 8,9 ends that connect major and minor portable blower respectively (are located in the explosion-proof shell of magnetic starter (QC83-120,225) top (8,1,2,9 end).
5) device output capacity
Output capacity: have 4 tunnel
Wherein: 3 tunnel 2 cores connect 1,9 ends of major and minor portable blower respectively; 1,9 ends of workplace; Be switching value, the maximum current that contact can bear is 3A; The electric current that flows through 1,9 nodes when major and minor portable blower, workplace operate as normal is about 0.36A.
Wherein: 1 tunnel 4 core is a grid line of giving Monitor Sub-Station of Less, b when operate as normal, and c holds low level, when heavy gas and air quantity fault, b, c end output high level is to substation (a, the d end is standby).
The invention has the beneficial effects as follows that in the large-scale colliery that monitoring and controlling system (as KJ66, KJ69, KJ4 etc.) have been installed, this device can effectively improve the function to down-hole double local leaf monitoring; To the medium and small colliery of monitoring and controlling system is not installed, this device can economical, effectively solve the difficult problem of double local leaf's fault diagnosis and automatic switchover and control, gas localization of fault, the reliable locking of wind-powered electricity generation gas.
Description of drawings
Fig. 1 is a control main board structural representation block diagram of the present invention;
Fig. 2 is
Fig. 2 a is 5V power conversion and power sense circuit;
Fig. 2 b for manually start, CAN communication and DSP peripheral circuit;
Fig. 2 b-1 is the testing circuit that manually starts of Fig. 2 b;
Fig. 2 b-2 is the CAN communication module circuit of Fig. 2 b;
Fig. 2 b-3 resets and function selector circuit for Fig. 2 b's;
Fig. 2 b-4 is the power source conversion DC-DC modular circuit of Fig. 2 b;
Fig. 2 b-5 is the jtag interface circuit of Fig. 2 b;
Fig. 2 c is DSP and outer RAM expanded circuit;
Fig. 2 d collecting sensor signal and output drive and interface circuit;
Fig. 2 d-1 is the output driver module circuit of Fig. 2 d;
Fig. 2 d-2 is the sensor acquisition circuit of Fig. 2 d;
Fig. 2 d-3 is the interface module circuit of Fig. 2 d;
Fig. 3 is a display panel structure schematic block diagram of the present invention;
Fig. 4 is a display board schematic diagram of the present invention;
Fig. 4 a is the localization of fault display circuit figure of Fig. 4;
Fig. 4 b is locking and the charging circuit of Fig. 4;
Fig. 5 is an overall connection block diagram of the present invention;
Fig. 6 is a down-hole mining workplace sensor distribution schematic diagram;
Fig. 7 is a terminal block layout of the present invention;
Fig. 8 is the vacuum magnetic starter electrical schematic diagram.
Embodiment
Accompanying drawing is embodiments of the invention.
Below in conjunction with accompanying drawing summary of the invention is described further: with reference to shown in Figure 1, a kind of double local leaf fault diagnosis and automatic switchover locking integrating device, comprise by a control main board, locking and display board, a terminal block is formed, its described control main board comprises by crossing flow fuse 1,2 are connected with intrinsic safety transformer 5, fuse 2 is connected with interlock relay 3, interlock relay 3 is connected with rectifier bridge 4, rectifier bridge 4 is connected with current limliting module 7, current limliting module 7 is connected with power transfer module 8, power transfer module 8 is connected with DC voltage conversion chip 9, DC voltage conversion chip 9 is connected with digital signal processing chip 12, digital signal processing chip 12 respectively with Sheffer stroke gate 11, optocoupler module 6, interface 17, expansion mouthful 19 connections, optocoupler module 6 successively respectively with first relay 13, second relay 14, the 3rd relay 15, the 4th relay 16 connects, optocoupler module 6 is connected with relay control output and 36V alternating current input terminal module 21 simultaneously, optocoupler module 6 is also distinguished Sheffer stroke gate 10, the terminal mouth 18 that is connected with display board connects, and not gate 10 is connected with sensor signal input terminal module 20; Described locking and display board are to be connected with the 6th relay 24 with the 5th relay 23 respectively by the terminal 22 that is connected with terminal block, the terminal 31 that is connected with mainboard is connected with lock modules 29, display lamp 30 and pressure-stabilizing constant flow charging module 26 respectively, lock modules 29 is connected with the 5th relay 23, the 6th relay 24 respectively, the 7th relay 25 is connected with power supply handover module 28, pressure-stabilizing constant flow charging module 26 is connected with voltage comparator 27, voltage comparator 27 is connected with power supply handover module 28, and lock modules 29 is connected with manual release terminal 32.
Described double local leaf fault diagnosis and automatic switchover locking integrating device, the terminal mouth 18 on its master control borad is connected with terminal 31 on the display board.The lock-switch that display board manual release terminal 32 is delivered on the device panel.
Described double local leaf fault diagnosis and automatic switchover locking integrating device, the terminal 22 that connects on its display board is connected with the terminal interface 7-15 of terminal block, and the sensor signal input terminal 20 on the master control borad, relay control output and 36V alternating current input terminal 21 are connected with the terminal interface 7-14 of terminal block respectively.
Fig. 2 is a control main board schematic diagram of the present invention, and Fig. 2 is made of Fig. 2 a, Fig. 2 b, Fig. 2 c four parts respectively again.
Fig. 2 a is depicted as 5V power conversion and power sense circuit, and in Fig. 2 a, power supply terminal row HD2 links to each other with AC relay JDQ1, and JDQ1 links to each other with fuse; Transformer BYQ respectively with fuse F1, F2, rectifier bridge B1, resistance R 1, R2 links to each other; Capacitor C 21 respectively with rectifier bridge B1, restrictor U17, U18 links to each other; R80 respectively with restrictor U18, three terminal regulator U8, capacitor C 1 links to each other; C2 respectively with three terminal regulator U8, voltage stabilizing diode D9 links to each other; R18 respectively with voltage stabilizing diode D9, thyristor Q9, resistance R 82 links to each other; Voltage stabilizing diode D10 respectively with thyristor Q9, Q10 links to each other, resistance R 83 and resistance R 84, thyristor Q10 links to each other; Optocoupler U11 respectively with R1, R2, U15 links to each other; U15 respectively with resistance R 64, R65, R67, R68 links to each other.
Fig. 2 b is depicted as and manually starts, CAN communicates by letter and the DSP peripheral circuit.Fig. 2 b again respectively by Fig. 2 b-1 manually start testing circuit, Fig. 2 b-2CAN communication module circuit, Fig. 2 b-3 resets and function selector circuit, Fig. 2 b-4 power source conversion DC-DC modular circuit, Fig. 2 b-5JTAG interface circuit five parts constitute, in manually starting testing circuit, 2-main8 links to each other with main8 among Fig. 1; Optocoupler U12 respectively with R4, U5A links to each other with door; With door U5A respectively with resistance R 6, d type flip flop U3A links to each other; Capacitor C 14 links to each other with C15; D type flip flop U3A links to each other with resistance R 66, in the CAN telecommunication circuit, CAN transceiver U2 respectively with capacitor C 18, resistance R 76, R75 links to each other, reset and the working mode selection circuit in, rejection gate U6A is respectively at rejection gate U6B, resistance R 8, capacitor C 11 links to each other; Switch S 2 links to each other with resistance R 11, in the 3.3V change-over circuit, power conversion chip U1 respectively with electric capacity R24, C16 links to each other; R7 links to each other with light emitting diode DS1; Capacitor C 10 links to each other with C25; In the jtag interface circuit, JATG terminal J2 links to each other with capacitor C 13.
Fig. 2 c is depicted as DSP and outer RAM expanded circuit, in Fig. 2 c, and dsp chip U7 and outer RAM extended chip U10, U5B interconnects with door; Dsp chip U7 respectively with crystal oscillator U4, resistance R 12, R13, R14 link to each other, capacitor C 12, C9, C31, C32 link to each other; Dsp chip U7 respectively with Fig. 1 in resistance R 60, optocoupler U15 links to each other; Dsp chip U7 respectively with Fig. 2 in CAN transceiver U2, switch S 2 links to each other.
Fig. 2 d collecting sensor signal and output drive and interface circuit.Fig. 2 d is made up of Fig. 2 d-1 output driver module circuit, Fig. 2 d-2 sensor acquisition circuit, Fig. 2 d-3 interface module circuit three parts respectively, as shown in the figure, optocoupler U13 links to each other with resistance R 44, R45, R46, R47, R48, R49, R50, R51 respectively, and optocoupler U14 links to each other with resistance R 77, R78, R52, R53; Sensor cross-talk row Sheffer stroke gate U16 links to each other; Not gate U16 links to each other with resistance R 44, R45, R46, R47, R55, R56, R47, R59 respectively, in interface circuit, terminal MainDisplay respectively with jumper terminal J17, relay J DQ1, JDQ2, JDQ3, JDQ4, JDQ5 link to each other, link to each other with the terminal MainDisplay 1 among Fig. 4 a, in output driving circuit, resistance R 39, R40, R41, R42 all link to each other with dsp chip U7 among Fig. 3, and U9 links to each other with optocoupler; Optocoupler U9 links to each other with resistance R 43, R16, R21, R26, R31; Triode Q1 links to each other with resistance R 15, R16, R17, R18 respectively; Triode Q2 respectively with resistance R 17, R18, R19, relay J DQ2, diode D1, D5 link to each other; Triode Q3 links to each other with resistance R 20, R21, R22, R23 respectively; Triode Q4 respectively with resistance R 22, R23, R24, relay J DQ3, diode D2, D6 link to each other; Triode Q5 links to each other with resistance R 25, R26, R27 respectively; Triode Q6 respectively with resistance R 27, R28, R29, relay J DQ4, diode D3, D7 link to each other; Triode Q8 respectively with R32, R33, R34, relay J DQ5, diode D4, D8 link to each other; Relay J DQ5 links to each other with resistance R 60.
Shown in Figure 3, described locking and display board are to be connected with the 6th relay 24 with the 5th relay 23 respectively by the terminal 22 that is connected with terminal block, the terminal 31 that is connected with mainboard is connected with pressure-stabilizing constant flow charging module (26) respectively with for lock modules 29, display lamp 30, lock modules 29 is connected with manual release terminal (32) with the 5th relay 23, the 6th relay 24 respectively, the 7th relay 25 is connected with power supply handover module 28, pressure-stabilizing constant flow charging module 26 is connected with voltage comparator 27, and voltage comparator (27) is connected with power supply handover module (28).
Fig. 4 is a display board schematic diagram of the present invention, and Fig. 4 is divided into Fig. 4 a, Fig. 4 b two parts.In Fig. 4 a, resistance R 67A links to each other with light emitting diode D1-1, terminal MainDisplay_1 respectively; Resistance R 68A links to each other with light emitting diode D2-1, terminal MainDisplay-1 respectively; Resistance R 69A links to each other with light emitting diode D3-1, terminal MainDisplay-1 respectively; Resistance R 70A links to each other with light emitting diode D4-1 respectively; Resistance R 70A-1 links to each other with light emitting diode D4-2, terminal MainDisplay-1 respectively; Resistance R 71A links to each other with light emitting diode D5-1 respectively; Resistance R 71A-1 links to each other with light emitting diode D5-2, terminal MainDisplay-1 respectively; Resistance R 76A links to each other with light emitting diode D10-1, terminal MainDisplay-1 respectively; Resistance R 75A links to each other with light emitting diode D9-1, terminal MainDisplay-1 respectively; Resistance R 74A links to each other with light emitting diode D8-1, terminal MainDisplay-1 respectively; Resistance R 73A links to each other with light emitting diode D7-1, terminal MainDisplay-1 respectively; Resistance R 72A links to each other with light emitting diode D6-1, terminal MainDisplay-1 respectively;
Fig. 4 b is locking and charging circuit, and in Fig. 4 b, three terminal regulator U1A links to each other with terminal J5, adjustable resistance R7A, capacitor C 1A, diode D11, three terminal regulator U3B respectively; Dual operational amplifier U2A respectively with resistance R 1A, R3A, R6A, adjustable resistance R2A, R7A, diode D11 links to each other; Triode Q7A links to each other with resistance R 3A, diode D11, relay J DQ6 respectively; Three terminal regulator U3B links to each other with terminal J5, relay J DQ6, resistance R 4A respectively; Light emitting diode D12 links to each other with relay J DQ6; Relay J DQ7 links to each other with battery BT1, resistance R 18A, triode Q8A, light emitting diode D12; Triode Q2A respectively with resistance R 18A, R20A, diode D14, terminal J14 links to each other; Triode Q8A links to each other with relay J DQ7, resistance R 5A respectively; D type flip flop U12B links to each other with resistance R 5A, not gate U13A, U13C respectively; Not gate U13B Sheffer stroke gate U13A links to each other; Terminal J6 links to each other with Fig. 4 a display circuit, terminal block respectively.
All power supplys link to each other among Fig. 2 and Fig. 4, and (intrinsic safety electric source VCC links to each other with intrinsic safety electric source VCC, non-intrinsic safety electric source FBAVCC links to each other with non-intrinsic safety electric source FBAVCC, 3.3V power supply VCC1 links to each other with 3.3V power supply VCC1), power supply ground links to each other (intrinsic safety electric source ground BAGND links to each other with intrinsic safety electric source ground BAGND, and non-intrinsic safety electric source ground FBAGND links to each other with non-intrinsic safety electric source ground FBAGND).
Shown in Figure 5, the integrated device of 5-1,5-2 are that photoelectricity is isolated to 5-5, and 5-6 is for driving, and 5-7 is for delivering to monitoring system underground substation signal.Described T1-T5 is the firedamp sensor and the air flow sensor at each check point place, and wherein: T1 is that boring head firedamp sensor, T2 are that portable blower air intake firedamp sensor, T5 are air quantity (blast) sensor for driving return air firedamp sensor, T3 for mixing return air firedamp sensor, T4; M, V, W represent underground equipment, and wherein: M is that main station fan 6-5, V are that secondary portable blower 6-6, W are driving face coalcutter 6-12; D 1-D 10The expression localization of fault shows pilot lamp, wherein: D 1-D 5State to firedamp sensor and air flow sensor T1-T5 shows, the bright expression fault of lamp.D 6-D 10Major and minor power supply and major and minor portable blower and workplace state are shown that bright expression power supply of lamp or equipment are normal.According to " safety regulations in coal mine " put into effect in November, 2006, on the Gas Signal of device each check point of getting working face environment under production wells and the basis of air volume signal, the DSP control program cooperates hardware circuit to realize collection gas localization of fault, double local leaf's automatic switchover, locking and control, can deliver to the integrated function that remote monitoring and control are carried out in ground by the monitoring system underground substation.
Shown in Figure 6, power electricity power source special 01,02,03, integrated apparatus 6-1, motor power source special 6-2, workplace magnetic starter 6-3, the special-purpose magnetic starter 6-4 of secondary portable blower, main station fan 6-5, secondary portable blower 6-6, workplace 6-7, fuse 6-8 is to 6-10, air inlet 6-11, remove gas substation 6-12, main tunnel 6-13, boring head gas monitor sensor T1, driving return air gas monitoring sensor T2, mix return air gas monitoring sensor T3, portable blower air intake gas monitor sensor T4, air flow sensor T5 forms.This figure has clearly pointed out the distributing position of each sensor at the down-hole mining workplace.
The annexation of above-mentioned each parts is as follows: 02 connects fuse 6-9, the special-purpose magnetic starter 6-2 of another termination main station fan of fuse 6-9 6-5, and the magnetic starter 6-2 other end is connected on the main station fan 6-5; Power electricity power source special 03 connects fuse 6-10, the special-purpose magnetic starter 6-4 of the secondary portable blower 6-6 of another termination of this fuse 6-10, and the magnetic starter 6-4 other end is connected on the secondary portable blower 6-6; Power electricity power source special 01 connects fuse 6-8, the special-purpose magnetic starter 6-3 of another termination workplace of fuse 6-8, and the magnetic starter 6-3 other end is connected to the coalcutter 6-12 of workplace; Magnetic starter 6-2, magnetic starter 6-4, magnetic starter 6-3 cheat integrated apparatus 6-1 with the signal input, and wherein sensor T1-T5 presses Fig. 7 mode of connection and is connected with the magnetic starter terminal.
Shown in Figure 7, workplace 7-1, secondary portable blower 7-2, main station fan 7-3, the master cuts 7-4, and pair is cut 7-5, and the worker cuts 7-6, netting twine 7-7.Described terminal block first row successively is respectively terminal m8, m1, m2, the m9 that main station is fanned magnetic starter 7-3 from right to left; The centre is terminal v8, v1, v2, the v9 of secondary portable blower magnetic starter 7-2; The connection terminal that the left side is respectively the control end of workplace magnetic starter 7-1 is w8, w1, w2, w9; Wherein to deliver to the connection terminal of the control end of magnetic starter be m1, v1, w1, m9, v9, w9 to device; Magnetic starter is m8, v8, w8, m2, v2, w2 to the connection terminal of the power end that device provides, second from right to left connection terminal 7-8,7-9,7-10,7-11 and the 7-12 of row is connected with sensor T1, T2, T3, T4, T respectively that (each sensor is with two connection terminals, what keep left the limit is ground wire), the standby 5V direct supply that 7-13 provides for device.
" main cut 7-4, pair cuts 7-5 and the worker cuts 7-6 " terminal of the 3rd row is connected on respectively between the right side terminal of magnetic starter power supply terminal m8, v8, w8 and magnetic starter 1QA below of major and minor portable blower working surface coal mining machine, and connection terminal d, c, b, a of netting twine connection terminal 7-7 deliver to the fire damp substation.
Shown in Figure 8,8-1 is that reversible disconnector, 8-2 are that vacuum switch tube, CZK are that mining low-voltage vacuum contactor, DJB are that comprehensive protector of motor, ZJ are that auxiliary reclay, JS are the time relay (moment opens, moment closure).This equipment had been checked through manufacturer when dispatching from the factory, existing field boundary only need get final product by the connection of terminal connections method, this figure is QC83-120,225 vacuum magnetic starter electrical schematic diagrams, the major control object of this device is a special-purpose explosion-proof vacuum magnetic starter (QC83-120) under three coal mine, controls the duty of major and minor portable blower and workplace by the control magnetic starter.Scheme in view of the above, this starter offers 5 terminals of device, is respectively 1,2,8,9 terminals, and wherein 8,9 terminals are 36v AC power.If magnetic starter is got to Long-distance Control, for the first time by after manually starting (promptly pressing the 2QA button among Fig. 8), the closure of device control 1,9 terminals or 2,9 terminals, the line band of intermediate relay ZJ, make and often open node ZJ2, ZJ3 closure, the i.e. closure of may command magnetic starter.This point is very important in the control of device to main station fan, secondary portable blower and workplace.
The concrete operations of this device are:
1) device is opened audit function: will check at first whether major and minor portable blower circuit is all normal, has only two-way all normal when opening for the first time, firedamp sensor T1～T4 does not all exceed standard simultaneously, could start., detect air quantity T5 and normally could start workplace after back 90 seconds in startup.
2) double local leaf's dual power supply automatic switching function.: two portable blowers use double loop power supply, can automatically switch mutually.During automatic switchover, the driving face power supply is not interrupted, continuous working fully.Under normal operation, after device checked that two portable blowers and feed circuit thereof are intact, the main station fan can be opened, secondary portable blower stop and locking stand-by; When the main station fan failure, secondary portable blower is opened automatically; After the main station fan was fixed a breakdown and recovered normally, device automatically switches to the work of main station fan and secondary portable blower is stopped transport, and the secondary portable blower of automatic blocking, and it can not be started.
3) locking and localization of fault Presentation Function: the gas density of T1 or T2 position meets and exceeds (according to the 138th of safety regulations in coal mine) at 1.0% o'clock in driving face or the return aircourse, and T1 or T2 pilot lamp are bright; Device cuts off driving face power supply and locking; The workplace pilot lamp extinguishes; The operate as normal but fan remains unchanged, and realize gas and electric control locking.
When getting rid of the driving face accumulated methane, make workplace and full blast press distinguished and admirable T3 position, the place gas density of mixing to reach at 1.5% o'clock, the T3 pilot lamp is bright; Device cuts off the driving face power supply, cuts off the portable blower power supply simultaneously; Workplace and portable blower indicate equal lamp to extinguish and locking.
Polyphone ventilation operation face is gone into distinguished and admirable middle T4 position gas density and was met and exceeded 0.5% o'clock, and the T4 pilot lamp is bright, and device cuts off the driving face power supply, cuts off the portable blower power supply simultaneously.Workplace and portable blower pilot lamp all extinguish and locking.
After portable blower started, air quantity did not reach 4m 3/ people (according to the 103rd of safety regulations in coal mine), the T5 pilot lamp is bright; Device is closed the main station fan, is started secondary portable blower, if behind the time-delay 90s, T5 does not still reach the blast standard, device then cuts off driving face, portable blower power supply, and workplace and portable blower indicate equal lamp to extinguish and locking.
When being diagnosed as the driving face power supply, plant failure is cut off locking, but fan remains unchanged during operate as normal, if gas density is reduced to setting when following, the device automatic unlocking; If fault diagnosis is opened after all stopping using for the driving face power supply is cut off locking and two fans, must manual release next time.
4) remote detection and control function.
This device provides the signal (normally being high level) of major and minor portable blower, workplace operate as normal, heavy gas density exceeds standard, blast exceeds standard signal (fault is a high level), send Monitor Sub-Station of Less to, make the staff monitor and to understand double local leaf and downhole safety working condition in the ground now, so that management by network implementation.
5) Presentation Function.
This device provides the localization of fault of perfect in shape and function to show indication.When device was in abnormal operating state, display lamp is the fault location source accurately.For example, exceed standard or during deficiency in draught, device can accurately show it is that the residing position of which sensor exceeds standard when gas density; When major-minor portable blower power supply or the fault of major-minor portable blower own, device energy locating and displaying, this provides great convenience for field personnel's rapidly removing faults.
6) connection function easily.
The input of this device, output are all finished at terminal block, to be user-friendly to.
In sum, the present invention compared with prior art, double local leaf's fault diagnosis and automatic switchover locking Integrated apparatus have strong interference immunity, low in energy consumption, sensitive high, locating and displaying accurately, dependable performance and The advantages such as work safety. In the safety in production of gaseous mine, for installed monitoring and controlling system (as KJ66, KJ69) large coal mine in, this device can effectively improve the merit to down-hole double local leaf monitoring Can; To the medium and small colliery of monitoring and controlling system is not installed, this device can economical, effectively solve double local leaf The difficult problem of fault diagnosis and automatic switchover and control, gas fault location, the reliable locking of wind-powered electricity generation gas. According to The novelty assessment report result in April, 2007 shows, this device as First take DSP (TMS320LF2407A) as Collection gas fault location, double local leaf's automatic switchover, locking and the control of master controller, can be by monitoring system The system underground substation is sent to the integrated apparatus that remote monitoring is realized on ground, and for guaranteeing safety of coal mines Therefore produce significantly, wide popularizing application prospect is arranged.

Claims (3)

1. double local leaf's fault diagnosis and automatic switchover locking integrating device, comprise by a control main board, locking and display board, a terminal block is formed, it is characterized in that described control main board comprises by crossing flow fuse (1,2) be connected with intrinsic safety transformer (5), fuse (2) is connected with interlock relay (3), interlock relay (3) is connected with rectifier bridge (4), rectifier bridge (4) is connected with current limliting module (7), current limliting module (7) is connected with power transfer module (8), power transfer module (8) is connected with DC voltage conversion chip (9), DC voltage conversion chip (9) is connected with digital signal processing chip (12), digital signal processing chip (12) respectively and Sheffer stroke gate (11), optocoupler module (6), interface (17), expansion mouthful (19) connects, optocoupler module (6) successively respectively with first relay (13), second relay (14), the 3rd relay (15), the 4th relay (16) connects, optocoupler module (6) is connected with relay control output and 36V alternating current input terminal module (21) simultaneously, optocoupler module (6) is also distinguished Sheffer stroke gate (10), the terminal mouth (18) that is connected with display board connects, and not gate (10) is connected with sensor signal input terminal module (20); Described locking and display board are to be connected with the 6th relay (24) with the 5th relay (23) respectively by the terminal that is connected with terminal block (22), the terminal that is connected with mainboard (31) respectively with lock modules (29), display lamp (30) is connected with pressure-stabilizing constant flow charging module (26), lock modules (29) respectively with the 5th relay (23), the 6th relay (24) is connected with manual release terminal (32), the 7th relay (25) is connected with power supply handover module (28), pressure-stabilizing constant flow charging module (26) is connected with voltage comparator (27), voltage comparator (27) is connected with power supply handover module (28), and described terminal block first row successively is respectively the terminal (m8 that main station is fanned magnetic starter (7-3) from right to left, m1, m2, m9); The centre is the terminal (v8, v1, v2, v9) of secondary portable blower magnetic starter (7-2); The magnetic starter connection terminal that the left side is respectively workplace magnetic starter (7-1) workplace is (w8, w1, w2, w9); Wherein device is delivered to the connection terminal of control end of magnetic starter for (m1, v1, w1, m9, v9, w9); Magnetic starter is (m8, v8, w8, m2, v2, w2) to the connection terminal of the power end that device provides, second row connection terminal (7-8,7-9,7-10,7-11) from right to left is connected with sensor (T1, T2, T3, T4, T5) respectively with (7-12), each sensor is with two connection terminals, keep left the limit for ground wire, the standby 5V direct supply (7-13) that provides for device; " main cut (7-4), pair cuts (7-5) and the worker cuts (7-6) " terminal of the 3rd row is connected on the magnetic starter power supply terminal (m8, v8, w8) of major and minor portable blower and working surface coal mining machine respectively and separately between the right side terminal below the magnetic starter (1QA), and the connection terminal of netting twine connection terminal (7-7) (d, c, b, a) is given the fire damp substation.
2. double local leaf according to claim 1 fault diagnosis and automatic switchover locking integrating device is characterized in that the terminal mouth (18) on the master control borad is connected with terminal (31) on the display board.Display board manual release terminal (32) send the lock-switch on the duct device panel.
3. double local leaf according to claim 1 fault diagnosis and automatic switchover locking integrating device, it is characterized in that the terminal (22) that connects on the display board is connected with the terminal interface (7-15) of terminal block, the sensor signal input terminal (20) on the master control borad, relay control output and 36V alternating current input terminal (21) are connected with the terminal interface (7-14) of terminal block respectively.
CN2008100174722A 2008-02-01 2008-02-01 Double-local fan fault diagnosis and automatic switching closedown integrated device Expired - Fee Related CN101246364B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711520A (en) * 2013-12-17 2014-04-09 国投新集能源股份有限公司 Underground local ventilator power supply system
CN109100971A (en) * 2018-08-20 2018-12-28 合肥华耀电子工业有限公司 A kind of switching on and shutting down sequential control circuit with interlock function
CN113700516A (en) * 2021-09-02 2021-11-26 西安重装韩城煤矿机械有限公司 Remote switching device and method for coal mine variable-frequency local ventilator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711520A (en) * 2013-12-17 2014-04-09 国投新集能源股份有限公司 Underground local ventilator power supply system
CN109100971A (en) * 2018-08-20 2018-12-28 合肥华耀电子工业有限公司 A kind of switching on and shutting down sequential control circuit with interlock function
CN109100971B (en) * 2018-08-20 2024-02-09 合肥华耀电子工业有限公司 On-off time sequence control circuit with interlocking function
CN113700516A (en) * 2021-09-02 2021-11-26 西安重装韩城煤矿机械有限公司 Remote switching device and method for coal mine variable-frequency local ventilator

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