CN102251980B - Subway tunnel fan control system - Google Patents
Subway tunnel fan control system Download PDFInfo
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- CN102251980B CN102251980B CN201110227649.3A CN201110227649A CN102251980B CN 102251980 B CN102251980 B CN 102251980B CN 201110227649 A CN201110227649 A CN 201110227649A CN 102251980 B CN102251980 B CN 102251980B
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- 239000000779 smoke Substances 0.000 abstract description 7
- 239000004821 Contact adhesive Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
- F04D19/005—Axial flow fans reversible fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a subway tunnel fan control system, which comprises a main circuit, a programmable logic controller (PLC) control circuit and a forced start control circuit. When a PLC control system fails, a fan can be forcibly started to run through the forced start control circuit; when the subway tunnel fan runs in a fire condition mode, the system can effectively shield the fault to ensure safe, reliable and normal operation of the fan; and the fan provides necessary fresh air for passengers and fire fighters by air supply or smoke exhaust, and a certain face velocity is formed, so that the passengers and the workers are guided to evacuate safely, harmful smoke is removed, and the fire-fighting function of exhausting the smoke by supplying fresh air is realized.
Description
Technical field
The present invention relates to a kind of fan control system of underground railway tunnel, especially relate to a kind of tunnel blower control system with opening by force function.
Background technique
Along with the track traffic of recent year big city---subway flourish, the application of subway tunnel blower fan is more and more extensive, and fan control system of underground railway tunnel also constantly improves and upgrades, and various subway tunnel fan controllers are widely used in the control of blower fan.There is frequency variator to start blower fan, have soft initiator to start blower fan, also have in early days star triangle or from lotus root reduced-voltage starting blower fan, also have the control gear of direct startup blower fan.In these fan controllers, adopt frequency variator to start the device that blower fan is controlled in operation, have stable, energy-conservation, efficient, the advantage of easy care.Subway tunnel blower fan, when being applied to fire working pattern, after blower fan starts by frequency variator, is directly switch into power frequency bypass operation, controls subway tunnel blower fan and discharges fume at full speed.Control system has on the spot, distance control mode, when control system breaks down for a certain reason, fan controller cannot start the trouble-free operation of subway tunnel blower fan in time, particularly, under the operating mode of the urgent smoke evacuation of fire working, the fault of fan control system of underground railway tunnel can cause the serious accident that subway tunnel blower fan cannot normally move.The malfunctioning tragedy that all can produce life death of any subway tunnel blower fan.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of with promptly opening by force the fan control system of underground railway tunnel of function.
For achieving the above object, the present invention can take following technical proposals: a kind of fan control system of underground railway tunnel, comprise main circuit, PLC control circuit and open by force control circuit, described main circuit comprises three phase mains live wire L1, L2, L3, three-phase breaker QF, frequency converter B P, contactor KM1, KM2, KM4, motor M, the main contact of described three-phase breaker QF, frequency converter B P, contactor KM1 is connected across between three live wire L1, L2, L3 successively, and the output of the main contact of contactor KM1 connects the input of motor M; Difference parallel contactor KM2 and contactor KM4 between the main contact output terminal of the output terminal of three-phase breaker QF1 and contactor KM1;
Described PLC control circuit comprises circuit breaker Q F2, contactor KM1, KM2, KM4, auxiliary reclay KA4, KA9, KA10, zero line N;
An input end of the input termination circuit breaker Q F1 of described circuit breaker Q F2, has a shunt circuit between the output terminal of circuit breaker Q F2 and zero line N;
The branch road 1 of described shunt circuit by the normally opened contact of auxiliary reclay KA5, the normally-closed contact of the normally-closed contact of contactor KM4, contactor KM1, contactor KM2 be composed in series, the input end of the normally opened contact of KA5 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM2 is connected with zero line N;
The branch road 2 of described shunt circuit by the normally opened contact of auxiliary reclay KA6, the normally-closed contact of the normally-closed contact of contactor KM2, contactor KM1, contactor KM4 be composed in series, the input end of the normally opened contact of KA6 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM4 is connected with zero line N;
The branch road 3 of described shunt circuit by the normally opened contact of auxiliary reclay KA3, the normally-closed contact of the normally-closed contact of contactor KM2, contactor KM4, contactor KM1 be composed in series, the input end of the normally opened contact of KA3 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM1 is connected with zero line N;
The branch road 4 of described shunt circuit comprises auxiliary reclay KA9, KA10, the normally opened contact of auxiliary reclay KA1, auxiliary reclay KA9 series connection normally opened contact, auxiliary reclay KA10 rear and auxiliary reclay KA2 form a little shunt circuit, the normally opened contact of the normally opened contact of frequency converter B p, auxiliary reclay KA3 is connected with this little shunt circuit, the input end of the normally opened contact of frequency converter B P is connected with the output terminal of circuit breaker Q F2, and the output terminal of auxiliary reclay KA9, KA10 is connected with zero line N;
The branch road 5 of described shunt circuit comprises an auxiliary reclay KA4, and the input end of KA4 is connected with the output terminal of circuit breaker Q F2, and the output terminal of KA4 is connected with zero line N;
The D1 contact that is connected PLC Power supply circuit breaker Q F3 between the input end of described branch road 4 and the input end of branch road 5, the D2 contact of connecting breaker QF3 between the output terminal of described branch road 4 and the output terminal of branch road 5, described D1, D2 contact are interlock contact;
The described circuit that opens is by force comprised of control circuit and circuit for remotely controlling on the spot, comprise on the spot/remote control switch SA1, auxiliary reclay KA4; Described SA1 comprises contact 1,2,3,4, and the input end of the normally-closed contact of auxiliary reclay KA4 is connected with the output terminal of circuit breaker Q F2, and the output terminal of the normally-closed contact of KA4 is connected with 1,3 contacts of SA1 respectively; The contact 1,2 of on the spot/remote control switch SA1 is closed is state of a control on the spot, and contact 3,4 closures of SA1 are telecontrol state;
Described control circuit on the spot comprises controls normally closed switch SB1 on the spot, control on the spot normal open switch SB2, SB3, the contact 2 of described SA1 is connected with the input end of controlling on the spot normally closed switch SB1, the output terminal of controlling on the spot normally closed switch SB1 respectively with the input end of controlling on the spot normal open switch SB2, the input end of the normally-closed contact of contactor KM2, control on the spot the input end of normal open switch SB3, the input end of the normally-closed contact of contactor KM4 connects, the output terminal of SB2, the output terminal of the normally-closed contact of KM2 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 1 in PLC control circuit, the output terminal of the output terminal of SB3, the normally-closed contact of KM4 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 2 in PLC control circuit,
Described circuit for remotely controlling comprises telecontrol normally closed switch SC1, telecontrol normal open switch SC2, SC3, the contact 4 of described SA1 is connected with the input end of SC1, the output terminal of SC1 respectively with the input end of SC2, the input end of normally opened contact of contactor KM2, the input end of the normally opened contact of the input end of SC3, contactor KM4 is connected, the output terminal of the normally opened contact of the output terminal of SC2, contactor KM2 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 1 in PLC control circuit; The output terminal of the normally opened contact of the output terminal of SC3, contactor KM4 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 2 with PLC control circuit.
Fan control system of underground railway tunnel of the present invention, with the control system promptly opening by force, exactly conventional PLC on the spot/increased by one group of urgent strong control mode starting on distance control mode, it is the control mode that a kind of standby starts subway tunnel blower fan, if conventional PLC on the spot/tele-control system breaks down, in the time of cannot normally recovering in short time, and by chance run into fire working pattern this time, when needing this tableland iron tunnel blower operation to discharge fume, just can adopt this standby control mode that promptly opens by force blower fan, guarantee that subway tunnel blower fan normally moves smoke evacuation.
In sum, beneficial effect of the present invention is: system break down or breaking out of fire in, can start safely and fast tunnel blower, improved the reliability of blower fan control system, Security, multifunctionality, stability, thus guarantee that subway tunnel blower fan all possesses the condition of reliable and stable safe operation under various working conditions.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is control principle drawing of the present invention.
Fig. 3 is main circuit diagram of the present invention.
Fig. 4 is control circuit figure of the present invention.
Embodiment
In order to make those skilled in the art person better understand the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, should belong to the scope of protection of the invention.
As shown in the figure, fan control system of underground railway tunnel of the present invention, comprise main circuit, PLC control circuit and open by force control circuit, described main circuit comprises three phase mains live wire L1, L2, L3, three-phase breaker QF, frequency converter B P, contactor KM1, KM2, KM4, motor M, the main contact of described three-phase breaker QF, frequency converter B P, contactor KM1 is connected across between three live wire L1, L2, L3 successively, and the output of the main contact of contactor KM1 connects the input of motor M; Difference parallel contactor KM2 and contactor KM4 between the main contact output terminal of the output terminal of three-phase breaker QF1 and contactor KM1;
Described PLC control circuit comprises circuit breaker Q F2, contactor KM1, KM2, KM4, auxiliary reclay KA4, KA9, KA10, zero line N;
An input end of the input termination circuit breaker Q F1 of described circuit breaker Q F2, has a shunt circuit between the output terminal of circuit breaker Q F2 and zero line N;
The branch road 1 of described shunt circuit by the normally opened contact of auxiliary reclay KA5, the normally-closed contact of the normally-closed contact of contactor KM4, contactor KM1, contactor KM2 be composed in series, the input end of the normally opened contact of KA5 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM2 is connected with zero line N;
The branch road 2 of described shunt circuit by the normally opened contact of auxiliary reclay KA6, the normally-closed contact of the normally-closed contact of contactor KM2, contactor KM1, contactor KM4 be composed in series, the input end of the normally opened contact of KA6 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM4 is connected with zero line N;
The branch road 3 of described shunt circuit by the normally opened contact of auxiliary reclay KA3, the normally-closed contact of the normally-closed contact of contactor KM2, contactor KM4, contactor KM1 be composed in series, the input end of the normally opened contact of KA3 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM1 is connected with zero line N;
The branch road 4 of described shunt circuit comprises auxiliary reclay KA9, KA10, the normally opened contact of auxiliary reclay KA1, auxiliary reclay KA9 series connection normally opened contact, auxiliary reclay KA10 rear and auxiliary reclay KA2 form a little shunt circuit, the normally opened contact of the normally opened contact of frequency converter B p, auxiliary reclay KA3 is connected with this little shunt circuit, the input end of the normally opened contact of frequency converter B P is connected with the output terminal of circuit breaker Q F2, and the output terminal of auxiliary reclay KA9, KA10 is connected with zero line N;
The branch road 5 of described shunt circuit comprises an auxiliary reclay KA4, and the input end of KA4 is connected with the output terminal of circuit breaker Q F2, and the output terminal of KA4 is connected with zero line N;
The D1 contact that is connected PLC Power supply circuit breaker Q F3 between the input end of described branch road 4 and the input end of branch road 5, the D2 contact of connecting breaker QF3 between the output terminal of described branch road 4 and the output terminal of branch road 5, described D1, D2 contact are interlock contact;
The described circuit that opens is by force comprised of control circuit and circuit for remotely controlling on the spot, comprise on the spot/remote control switch SA1, auxiliary reclay KA4; Described SA1 comprises contact 1,2,3,4, and the input end of the normally-closed contact of auxiliary reclay KA4 is connected with the output terminal of circuit breaker Q F2, and the output terminal of the normally-closed contact of KA4 is connected with 1,3 contacts of SA1 respectively; The contact 1,2 of on the spot/remote control switch SA1 is closed is state of a control on the spot, and contact 3,4 closures of SA1 are telecontrol state;
Described control circuit on the spot comprises controls normally closed switch SB1 on the spot, control on the spot normal open switch SB2, SB3, the contact 2 of described SA1 is connected with the input end of controlling on the spot normally closed switch SB1, the output terminal of controlling on the spot normally closed switch SB1 respectively with the input end of controlling on the spot normal open switch SB2, the input end of the normally-closed contact of contactor KM2, control on the spot the input end of normal open switch SB3, the input end of the normally-closed contact of contactor KM4 connects, the output terminal of SB2, the output terminal of the normally-closed contact of KM2 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 1 in PLC control circuit, the output terminal of the output terminal of SB3, the normally-closed contact of KM4 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 2 in PLC control circuit,
Described circuit for remotely controlling comprises telecontrol normally closed switch SC1, telecontrol normal open switch SC2, SC3, the contact 4 of described SA1 is connected with the input end of SC1, the output terminal of SC1 respectively with the input end of SC2, the input end of normally opened contact of contactor KM2, the input end of the normally opened contact of the input end of SC3, contactor KM4 is connected, the output terminal of the normally opened contact of the output terminal of SC2, contactor KM2 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 1 in PLC control circuit; The output terminal of the normally opened contact of the output terminal of SC3, contactor KM4 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 2 with PLC control circuit.
Working principle: as shown in Figure 2, under normal circumstances, the forward of blower fan, reversion and frequency adjustment are controlled by frequency converter B P, the ac power supply 0 of 380V, 50HZ is through circuit breaker Q F1, frequency converter B P, VFC contactor KM1, by tenminal block XT, be connected to blower motor M, fan power supply.Under fire working, when fan operation arrives peak frequency, by PLC classical control system, automatically switch to power frequency forward or power frequency reversion operation, now frequency converter B P does not control, PLC no-output KA3, therefore contactor KM1 no electric circuit, the normally opened contact of KM1 discharges; During forward, contactor KM2 adhesive is connected, the forward operation at full speed of blower motor M power frequency; During reversion, contactor KM4 adhesive is connected, the operation of reversing at full speed of blower motor M power frequency.PLC classical control system is integrated to be controlled on the spot, tele-control system, can control nominal situation and fire working respectively, but run under the emergency work condition of fire, and PLC control system is malfunctioning, control and tele-control system are all malfunctioning so on the spot, now can start by opening by force control system, can find out in the drawings, blower fan and PLC system independence under strong starting system control mode, irrelevant with frequency converter B P, as long as the circuit breaker Q F1 in control gear, the positive contactor KM2 of power frequency and power frequency reversion contactor KM4 can normally work, now blower fan just can be realized on the spot or the operation of long-range power frequency forward or power frequency reversion operation under strong starting system, at crucial moment, by strong starting system, can make strong wind machine move, play fire control smoke exhausting and send new wind action.
Below in conjunction with circuit diagram, working principle is described: as shown in Figure 3, Figure 4, Fig. 3 is that main circuit diagram, Fig. 4 are control circuit figure.Working principle under PLC normal mode of operation: PLC system can require output VFC pattern and industrial frequency control pattern according to program.Under BAS nominal situation mode of operation, PLC controls output auxiliary reclay KA3 energising, KA3 normally opened contact energising adhesive, the energising of VFC branch road, i.e. 3 energisings of branch road in Fig. 4, contactor KM1 energising, the main contact adhesive of contactor KM1 in main circuit is the ready work of converting operation.Then PLC controls output auxiliary reclay KA1 energising, the normally opened contact adhesive of KA1, and the frequency converter B P in main circuit controls forward, the normally opened contact adhesive of frequency converter B P, branch road 4 energisings, now fan frequency conversion forward operation; If PLC controls output auxiliary reclay KA2 energising, the normally opened contact adhesive of KA2, the frequency converter B P in main circuit controls reversion, the normally opened contact adhesive of frequency converter B P, branch road 4 energisings, frequency converter B P controls reversion, so now fan frequency conversion reversion operation.
At BAS(environment and equipment monitoring system) under fire working pattern, if want the operation of blower fan power frequency forward, PLC system is controlled first frequency conversion forward of blower fan and is started, and after fan frequency conversion forward starts, PLC controls output auxiliary reclay KA3 again, KA3 normally opened contact becomes disconnection from closure, branch road 3, branch road 4 disconnect, contactor KM1 power-off, and the main contact of the contactor KM1 in main circuit becomes release from adhesive, frequency converter B P does not control, frequency converter B P normally opened contact by adhesive to discharging.Then PLC controls output auxiliary reclay KA5, the normally opened contact adhesive of KA5, branch road 1 energising in control circuit, contactor KM2 energising, the normally opened contact adhesive of the contactor KM2 in main circuit, now blower fan power frequency forward operation; If want blower fan power frequency reversion operation, PLC system is controlled fan frequency conversion reversion and is started, after fan frequency conversion reversion starts, PLC controls output auxiliary reclay KA3 again, and KA3 normally opened contact becomes disconnection from closure, branch road 3, branch road 4 disconnect, contactor KM1 power-off, the main contact of the contactor KM1 in main circuit becomes release from adhesive, and frequency converter B P does not control, frequency converter B P normally opened contact by adhesive to discharging, the main contact of the contactor KM1 in main circuit by adhesive to release.Then PLC controls output auxiliary reclay KA6, the normally opened contact adhesive of KA6, branch road 2 energisings, contactor KM4 energising, the normally opened contact adhesive of contactor KM4 in main circuit, now blower fan power frequency reversion operation.
When the PLC of control gear system breaks down, now under uncontrollable fan frequency conversion or power frequency pattern, move, will move by opening by force control system so.In Fig. 4, SA1 is on the spot/remote control switch, under control switch SA1 gets on the spot state, contact 1,2 conductings of SA1, by pressing positive control normal open switch SB2 on the spot, contactor KM2 energising, the normally opened contact adhesive of KM2, now blower fan power frequency forward operation, by pressing, control on the spot normally closed switch SB1, stop the operation of blower fan forward; By pressing, control on the spot normal open switch SB3, contactor KM4 energising, the normally opened contact adhesive of KM4, now blower fan power frequency reversion operation, controls normally closed switch SB1 on the spot by pressing SB1, stops blower fan reversion operation.
When control switch SA1 gets under remote status, contact 3,4 conductings of SA1, by pressing telecontrol normal open switch SC2, contactor KM2 energising, KM2 normally opened contact energising adhesive, now blower fan power frequency forward operation, by pressing telecontrol normally closed switch SC1, stop the operation of blower fan forward; By pressing telecontrol normal open switch SC3, contactor KM4 energising, the normally opened contact adhesive of KM4, now blower fan power frequency reversion operation, by pressing SC1 telecontrol normally closed switch SC1, stops blower fan reversion operation.
When system is normal, while not needing strong starting system, the circuit breaker Q of closing F3, the D1 of circuit breaker Q F3, D2 contacting, auxiliary reclay KA4 energising, the normally-closed contact of KA4 disconnects, and opens by force circuit and disconnects, and closes strong starting system.
Operation and the PLC system independence of the blower fan under strong starting system control mode, irrelevant with frequency converter B P, as long as the circuit breaker Q F1 in control gear, the positive contactor KM2 of power frequency and power frequency reversion contactor KM4 can normally work, now blower fan just can be realized on the spot or the operation of long-range power frequency forward or power frequency reversion operation under strong starting system, at crucial moment, by strong starting system, can make strong wind machine move, play fire control smoke exhausting and send new wind action.
Claims (1)
1. a fan control system of underground railway tunnel, comprise main circuit, PLC control circuit and open by force control circuit, it is characterized in that: described main circuit comprises three phase mains live wire L1, L2, L3, three-phase breaker QF1, frequency converter B P, contactor KM1, KM2, KM4, motor M, the main contact of described three-phase breaker QF1, frequency converter B P, contactor KM1 is connected across between three live wire L1, L2, L3 successively, and the output of the main contact of contactor KM1 connects the input of motor M; Difference parallel contactor KM2 and contactor KM4 between the main contact output terminal of the output terminal of three-phase breaker QF1 and contactor KM1;
Described PLC control circuit comprises circuit breaker Q F2, contactor KM1, KM2, KM4, auxiliary reclay KA4, KA9, KA10, zero line N;
An input end of the input termination three-phase breaker QF1 of described circuit breaker Q F2, has a shunt circuit between the output terminal of circuit breaker Q F2 and zero line N;
The branch road 1 of described shunt circuit by the normally opened contact of auxiliary reclay KA5, the normally-closed contact of the normally-closed contact of contactor KM4, contactor KM1, contactor KM2 be composed in series, the input end of the normally opened contact of KA5 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM2 is connected with zero line N;
The branch road 2 of described shunt circuit by the normally opened contact of auxiliary reclay KA6, the normally-closed contact of the normally-closed contact of contactor KM2, contactor KM1, contactor KM4 be composed in series, the input end of the normally opened contact of KA6 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM4 is connected with zero line N;
The branch road 3 of described shunt circuit by the normally opened contact of auxiliary reclay KA3, the normally-closed contact of the normally-closed contact of contactor KM2, contactor KM4, contactor KM1 be composed in series, the input end of the normally opened contact of KA3 is connected with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM1 is connected with zero line N;
The branch road 4 of described shunt circuit comprises auxiliary reclay KA9, KA10, the normally opened contact of auxiliary reclay KA1, auxiliary reclay KA9 series connection normally opened contact, auxiliary reclay KA10 rear and auxiliary reclay KA2 form a little shunt circuit, the normally opened contact of the normally opened contact of frequency converter B p, auxiliary reclay KA3 is connected with this little shunt circuit, the input end of the normally opened contact of frequency converter B P is connected with the output terminal of circuit breaker Q F2, and the output terminal of auxiliary reclay KA9, KA10 is connected with zero line N;
The branch road 5 of described shunt circuit comprises an auxiliary reclay KA4, and the input end of KA4 is connected with the output terminal of circuit breaker Q F2, and the output terminal of KA4 is connected with zero line N;
The D1 contact that is connected PLC Power supply circuit breaker Q F3 between the input end of described branch road 4 and the input end of branch road 5, the D2 contact of connecting breaker QF3 between the output terminal of described branch road 4 and the output terminal of branch road 5, described D1, D2 contact are interlock contact;
The described control circuit that opens is by force comprised of control circuit and circuit for remotely controlling on the spot, comprise on the spot/remote control switch SA1, auxiliary reclay KA4; Described SA1 comprises contact 1,2,3,4, and the input end of the normally-closed contact of auxiliary reclay KA4 is connected with the output terminal of circuit breaker Q F2, and the output terminal of the normally-closed contact of KA4 is connected with 1,3 contacts of SA1 respectively; The contact 1,2 of on the spot/remote control switch SA1 is closed is state of a control on the spot, and contact 3,4 closures of SA1 are telecontrol state;
Described control circuit on the spot comprises controls normally closed switch SB1 on the spot, control on the spot normal open switch SB2, SB3, the contact 2 of described SA1 is connected with the input end of controlling on the spot normally closed switch SB1, the output terminal of controlling on the spot normally closed switch SB1 respectively with the input end of controlling on the spot normal open switch SB2, the input end of the normally-closed contact of contactor KM2, control on the spot the input end of normal open switch SB3, the input end of the normally-closed contact of contactor KM4 connects, the output terminal of SB2, the output terminal of the normally-closed contact of KM2 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 1 in PLC control circuit, the output terminal of the output terminal of SB3, the normally-closed contact of KM4 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 2 in PLC control circuit,
Described circuit for remotely controlling comprises telecontrol normally closed switch SC1, telecontrol normal open switch SC2, SC3, the contact 4 of described SA1 is connected with the input end of SC1, the output terminal of SC1 respectively with the input end of SC2, the input end of normally opened contact of contactor KM2, the input end of the normally opened contact of the input end of SC3, contactor KM4 is connected, the output terminal of the normally opened contact of the output terminal of SC2, contactor KM2 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 1 in PLC control circuit; The output terminal of the normally opened contact of the output terminal of SC3, contactor KM4 is all connected with the input end of the normally-closed contact of contactor KM1 in parallel branch 2 in PLC control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110227649.3A CN102251980B (en) | 2011-08-10 | 2011-08-10 | Subway tunnel fan control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110227649.3A CN102251980B (en) | 2011-08-10 | 2011-08-10 | Subway tunnel fan control system |
Publications (2)
| Publication Number | Publication Date |
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| CN102251980A CN102251980A (en) | 2011-11-23 |
| CN102251980B true CN102251980B (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110227649.3A Expired - Fee Related CN102251980B (en) | 2011-08-10 | 2011-08-10 | Subway tunnel fan control system |
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| WO2013135916A1 (en) * | 2012-03-14 | 2013-09-19 | Talleres Zitrón, S.A. | System and method for electronic control of the rotation speed of a fan impeller |
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| CN110529418B (en) * | 2019-08-29 | 2020-07-10 | 浙江万可电气设备有限公司 | Subway fan control cabinet and control system |
| CN110715389A (en) * | 2019-10-11 | 2020-01-21 | 福州市规划设计研究院 | Ventilation system suitable for gas fire extinguishing protection area and system control box thereof |
| CN111878441A (en) * | 2020-09-01 | 2020-11-03 | 河南艾牧智能设备有限公司 | Fan safe operation control system for livestock and poultry house |
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| CN102251980A (en) | 2011-11-23 |
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Denomination of invention: Subway tunnel fan control system Effective date of registration: 20190912 Granted publication date: 20140409 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Shaoxing Shangyu Small and Micro Enterprise Franchised Branch Pledgor: ZHEJIANG WANKE ELECTRIC EQUIPMENT CO.,LTD. Registration number: Y2019330000063 |
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