CN202182052U - Fan control system of underground railway tunnel - Google Patents
Fan control system of underground railway tunnel Download PDFInfo
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- CN202182052U CN202182052U CN2011202883010U CN201120288301U CN202182052U CN 202182052 U CN202182052 U CN 202182052U CN 2011202883010 U CN2011202883010 U CN 2011202883010U CN 201120288301 U CN201120288301 U CN 201120288301U CN 202182052 U CN202182052 U CN 202182052U
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- 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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- 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
Abstract
The utility model discloses a fan control system of an underground railway tunnel, comprising a main circuit, a PLC (Programmable Logical Control) circuit and a forced starting control circuit. When the PLC system is in failure, a fan can be forced to run by the forced starting control circuit, and when the fan of the underground railway tunnel runs in the fire work condition mode, the fan control system can effectively barrier the fault, the fan can be ensured to run reliably and normally, and provides necessary fresh air for passengers and fire control personnel by air feeding and smoke discharging, so that certain face velocity can be formed so as to guide the passengers and work personnel to retract safely, and the fan control system can discharge harmful smoke, thus playing the fire control role of ventilation and smoke discharge.
Description
Technical field
The utility model relates to a kind of subway tunnel blower fan control system, especially relates to a kind of tunnel blower fan control system that opens function by force that has.
Background technique
Along with domestic big city track traffic in recent years---subway flourish, the application of subway tunnel blower fan more and more widely, the subway tunnel blower fan control system also constantly improves and upgrades, various subway tunnel fan controllers are widely used in the control of blower fan.There is frequency variator to start blower fan, has soft initiator to start blower fan, also have the star triangle in early days or, the control gear of direct startup blower fan is arranged also from lotus root reduced-voltage starting blower fan.In these fan controllers, adopt frequency variator to start the device of operation control blower fan, have stable, energy-conservation, efficient, the advantage of easy care.The subway tunnel blower fan is when being applied to the fire working pattern, and blower fan is directly switch into power frequency bypass operation after finishing through the frequency variator startup, controls the 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 can't in time start the trouble-free operation of subway tunnel blower fan; Particularly under the operating mode of the urgent smoke evacuation of fire working, the fault of subway tunnel blower fan control system can cause the serious accident that the subway tunnel blower fan can't normally move.The malfunctioning dead tragedy of life that all can produce of any subway tunnel blower fan.
The model utility content
The utility model provides a kind of subway tunnel blower fan control system that promptly opens function by force that has to the deficiency of existing technology.
For realizing above-mentioned purpose; The utility model can be taked following technical proposals: a kind of subway tunnel blower fan control system comprises main circuit, PLC control circuit and opens control circuit by force that said 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 said three-phase breaker QF, frequency converter B P, contactor KM1 is connected across between three live wire L1, L2, the L3 successively, and the output of the main contact of contactor KM1 connects the input of motor M; Parallelly connected contactor KM2 and contactor KM4 respectively between the main contact output terminal of the output terminal of three-phase breaker QF1 and contactor KM1;
Said PLC control circuit comprises circuit breaker Q F2, contactor KM1, KM2, KM4, auxiliary reclay KA4, KA9, KA10, zero line N;
Between the input end of the input termination circuit breaker Q F1 of said circuit breaker Q F2, the output terminal of circuit breaker Q F2 and zero line N a parallelly connected loop is arranged;
The branch road 1 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM4, the normally-closed contact of contactor KM1, the contactor KM2 of auxiliary reclay KA5; The input end of the normally opened contact of KA5 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM2 links to each other with zero line N;
The branch road 2 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM2, the normally-closed contact of contactor KM1, the contactor KM4 of auxiliary reclay KA6; The input end of the normally opened contact of KA6 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM4 links to each other with zero line N;
The branch road 3 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM2, the normally-closed contact of contactor KM4, the contactor KM1 of auxiliary reclay KA3; The input end of the normally opened contact of KA3 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM1 links to each other with zero line N;
The branch road 4 of said shunt circuit comprises auxiliary reclay KA9, KA10; Normally opened contact, the auxiliary reclay KA10 of the normally opened contact of auxiliary reclay KA1, auxiliary reclay KA9 series connection back 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 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of auxiliary reclay KA9, KA10 links to each other with zero line N;
The branch road 5 of said shunt circuit comprises an auxiliary reclay KA4, and the input end of KA4 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of KA4 links to each other with zero line N;
The D1 contact that between the input end of the input end of said branch road 4 and branch road 5, is connected PLC power supply power supply circuit breaker Q F3 is connected the D2 contact of circuit breaker Q F3 between the output terminal of the output terminal of said branch road 4 and branch road 5, said D1, D2 contact are the contact of linking;
The said circuit that opens by force is made up of control circuit and circuit for remotely controlling on the spot, comprises on the spot/remote control switch SA1 auxiliary reclay KA4; Said 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; On the spot/and the contact of remote control switch SA1 1,2 is closed to be state of a control on the spot, contact 3,4 closures of SA1 are the telecontrol state;
Said control circuit on the spot comprises controls normally closed switch SB1 on the spot; Control normal open switch SB2, SB3 on the spot; The contact 2 of said SA1 is connected with the input end of controlling normally closed switch SB1 on the spot; The input end of normally-closed contact that the output terminal of controlling normally closed switch SB1 is on the spot controlled input end, the contactor KM4 of normal open switch SB3 respectively with the input end of the normally-closed contact of the input end of controlling normal open switch SB2 on the spot, contactor KM2, on the spot is connected, the output terminal of the output terminal of SB2, the normally-closed contact of KM2 all with the PLC control circuit in parallel branch 1 in the input end of normally-closed contact of contactor KM1 link to each other; The output terminal of the output terminal of SB3, the normally-closed contact of KM4 all with the PLC control circuit in parallel branch 2 in the input end of normally-closed contact of contactor KM1 link to each other;
Said circuit for remotely controlling comprises telecontrol normally closed switch SC1; Telecontrol normal open switch SC2, SC3; The contact 4 of said SA1 is connected with the input end of SC1; The output terminal of SC1 is connected with the input end of the normally opened contact of the input end of the input end of the normally opened contact of the input end of SC2, contactor KM2, SC3, contactor KM4 respectively, the output terminal of the normally opened contact of the output terminal of SC2, contactor KM2 all with the PLC control circuit in parallel branch 1 in the input end of normally-closed contact of contactor KM1 link to each other; The output terminal of the normally opened contact of the output terminal of SC3, contactor KM4 all with the PLC control circuit in parallel branch 2 in the input end of normally-closed contact of contactor KM1 link to each other.
The utility model subway tunnel blower fan control system; Have the control system that promptly opens by force, exactly conventional PLC on the spot/increased by one group of urgent strong control mode that starts on the distance control mode, be the control mode that a kind of reserve starts the subway tunnel blower fan; If conventional PLC on the spot/tele-control system breaks down; In the time of can't normally recovering in short time, and by chance run into the fire working pattern this time, when needing this iron tunnel, tableland fan operation to discharge fume; Just can adopt this standby control mode that promptly opens blower fan by force, guarantee that the subway tunnel blower fan normally moves smoke evacuation.
In sum; The beneficial effect of the utility model is: when system breaks down perhaps breaking out of fire, can start the tunnel blower fan safely and fast, improve the reliability of blower fan control system; Security; Multifunctionality, stability, thus guarantee that the subway tunnel blower fan all possesses the condition of reliable and stable safe operation under various working conditions.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the control principle figure of the utility model.
Fig. 3 is the main circuit diagram of the utility model.
Fig. 4 is the control circuit figure of the utility model.
Embodiment
In order to make those skilled in the art person better understand the utility model scheme; To combine the accompanying drawing among the utility model embodiment below; Technological scheme among the utility model embodiment is carried out clear, complete description; Obviously, described embodiment only is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all should belong to the scope of the utility model protection.
As shown in the figure, the utility model subway tunnel blower fan control system comprises main circuit, PLC control circuit and opens control circuit by force; Said 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 said three-phase breaker QF, frequency converter B P, contactor KM1 are connected across between three live wire L1, L2, the L3 successively, and the output of the main contact of contactor KM1 connects the input of motor M; Parallelly connected contactor KM2 and contactor KM4 respectively between the main contact output terminal of the output terminal of three-phase breaker QF1 and contactor KM1;
Said PLC control circuit comprises circuit breaker Q F2, contactor KM1, KM2, KM4, auxiliary reclay KA4, KA9, KA10, zero line N;
Between the input end of the input termination circuit breaker Q F1 of said circuit breaker Q F2, the output terminal of circuit breaker Q F2 and zero line N a parallelly connected loop is arranged;
The branch road 1 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM4, the normally-closed contact of contactor KM1, the contactor KM2 of auxiliary reclay KA5; The input end of the normally opened contact of KA5 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM2 links to each other with zero line N;
The branch road 2 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM2, the normally-closed contact of contactor KM1, the contactor KM4 of auxiliary reclay KA6; The input end of the normally opened contact of KA6 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM4 links to each other with zero line N;
The branch road 3 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM2, the normally-closed contact of contactor KM4, the contactor KM1 of auxiliary reclay KA3; The input end of the normally opened contact of KA3 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM1 links to each other with zero line N;
The branch road 4 of said shunt circuit comprises auxiliary reclay KA9, KA10; Normally opened contact, the auxiliary reclay KA10 of the normally opened contact of auxiliary reclay KA1, auxiliary reclay KA9 series connection back 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 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of auxiliary reclay KA9, KA10 links to each other with zero line N;
The branch road 5 of said shunt circuit comprises an auxiliary reclay KA4, and the input end of KA4 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of KA4 links to each other with zero line N;
The D1 contact that between the input end of the input end of said branch road 4 and branch road 5, is connected PLC power supply power supply circuit breaker Q F3 is connected the D2 contact of circuit breaker Q F3 between the output terminal of the output terminal of said branch road 4 and branch road 5, said D1, D2 contact are the contact of linking;
The said circuit that opens by force is made up of control circuit and circuit for remotely controlling on the spot, comprises on the spot/remote control switch SA1 auxiliary reclay KA4; Said 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; On the spot/and the contact of remote control switch SA1 1,2 is closed to be state of a control on the spot, contact 3,4 closures of SA1 are the telecontrol state;
Said control circuit on the spot comprises controls normally closed switch SB1 on the spot; Control normal open switch SB2, SB3 on the spot; The contact 2 of said SA1 is connected with the input end of controlling normally closed switch SB1 on the spot; The input end of normally-closed contact that the output terminal of controlling normally closed switch SB1 is on the spot controlled input end, the contactor KM4 of normal open switch SB3 respectively with the input end of the normally-closed contact of the input end of controlling normal open switch SB2 on the spot, contactor KM2, on the spot is connected, the output terminal of the output terminal of SB2, the normally-closed contact of KM2 all with the PLC control circuit in parallel branch 1 in the input end of normally-closed contact of contactor KM1 link to each other; The output terminal of the output terminal of SB3, the normally-closed contact of KM4 all with the PLC control circuit in parallel branch 2 in the input end of normally-closed contact of contactor KM1 link to each other;
Said circuit for remotely controlling comprises telecontrol normally closed switch SC1; Telecontrol normal open switch SC2, SC3; The contact 4 of said SA1 is connected with the input end of SC1; The output terminal of SC1 is connected with the input end of the normally opened contact of the input end of the input end of the normally opened contact of the input end of SC2, contactor KM2, SC3, contactor KM4 respectively, the output terminal of the normally opened contact of the output terminal of SC2, contactor KM2 all with the PLC control circuit in parallel branch 1 in the input end of normally-closed contact of contactor KM1 link to each other; The output terminal of the normally opened contact of the output terminal of SC3, contactor KM4 all with the PLC control circuit in parallel branch 2 in the input end of normally-closed contact of contactor KM1 link to each other.
Working principle: as shown in Figure 2; Under the normal condition; Just the changeing of blower fan, counter-rotating and frequency adjustment are by frequency converter B P control, and the ac power supply 0 of 380V, 50HZ is through circuit breaker Q F1, frequency converter B P, VFC contactor KM1; Be connected to blower motor M through tenminal block XT, the fan power supply.Under the fire working, when fan operation when the peak frequency, automatically switch to through the PLC classical control system that power frequency is just being changeed or power frequency counter-rotating operation, this moment, frequency converter B P did not control, PLC no-output KA3, thus contactor KM1 no electric circuit, the normally opened contact release of KM1; When just changeing, contactor KM2 adhesive is connected, and blower motor M power frequency is just being transported row at full speed; During counter-rotating, contactor KM4 adhesive is connected, the operation of reversing at full speed of blower motor M power frequency.Control on the spot that the PLC classical control system is integrated, tele-control system can be controlled nominal situation and fire working respectively; But run under the emergency work condition of fire, and the PLC control system is malfunctioning, control and tele-control system are all malfunctioning so on the spot; Can start this moment through opening control system by force, can find out in the drawings, blower fan and PLC system independence under the strong starting system control mode; Irrelevant with frequency converter B P; As long as the circuit breaker Q F1 in the control gear, the positive contactor KM2 of power frequency and power frequency counter-rotating contactor KM4 can proper functioning, and this moment, blower fan just can be realized on the spot down or long-range power frequency is just being transported and gone or power frequency is reversed and moved at strong starting system; Through strong starting system the strong wind machine is moved at crucial moment, play the fire-fighting smoke evacuation and send new wind action.
Below in conjunction with circuit diagram working principle is described: like Fig. 3, shown in Figure 4, Fig. 3 is that main circuit diagram, Fig. 4 are control circuit figure.Working principle under the PLC normal mode of operation: the PLC system can require output VFC pattern and power frequency control mode according to program.Under BAS nominal situation mode of operation, PLC control output auxiliary reclay KA3 energising, KA3 normally opened contact energising adhesive; The energising of VFC branch road, i.e. 3 energisings of branch road among Fig. 4, contactor KM1 energising; The main contact adhesive of contactor KM1 in the main circuit is the ready work of converting operation.PLC control output auxiliary reclay KA1 energising then, the normally opened contact adhesive of KA1, the frequency converter B P control in the main circuit is just changeed, the normally opened contact adhesive of frequency converter B P, branch road 4 energisings, this moment, fan frequency conversion was just transported row; If PLC control output auxiliary reclay KA2 energising, the normally opened contact adhesive of KA2, the frequency converter B P control inversion in the main circuit, the normally opened contact adhesive of frequency converter B P, branch road 4 energisings, frequency converter B P control inversion, fan frequency conversion counter-rotating operation this moment so.
Under BAS (environment and equipment monitoring system) fire working pattern, if want the blower fan power frequency just transporting row, PLC system control blower fan at first frequency conversion is just changeing startup; Fan frequency conversion just changeing start finish after, PLC controls output auxiliary reclay KA3 once more, the KA3 normally opened contact becomes disconnection by closure; Branch road 3, branch road 4 break off, contactor KM1 outage, and the main contact of the contactor KM1 in the main circuit becomes release by adhesive; Frequency converter B P does not control, frequency converter B P normally opened contact by adhesive to discharging.Auxiliary reclay KA5 is exported in PLC control then, the normally opened contact adhesive of KA5, and branch road 1 energising in the control circuit, contactor KM2 energising, the normally opened contact adhesive of the contactor KM2 in the main circuit, this moment, the blower fan power frequency was just transported row; If want the counter-rotating of blower fan power frequency to move, the control fan frequency conversion counter-rotating of PLC system starts, after fan frequency conversion counter-rotating startup finishes; PLC controls output auxiliary reclay KA3 once more, and the KA3 normally opened contact becomes disconnection by closure, and branch road 3, branch road 4 break off; Contactor KM1 outage, the main contact of the contactor KM1 in the main circuit becomes release by 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 the main circuit by adhesive to release.Auxiliary reclay KA6 is exported in PLC control then, the normally opened contact adhesive of KA6, and branch road 2 energisings, contactor KM4 energising, the normally opened contact adhesive of contactor KM4 in the main circuit, this moment, the counter-rotating of blower fan power frequency moved.
When the PLC of control gear system breaks down, move under uncontrollable fan frequency conversion or the power frequency pattern at this moment, will move through opening control system by force so.Among Fig. 4 SA1 be on the spot/remote control switch, under control switch SA1 gets on the spot state, contact 1,2 conductings of SA1; Through pressing positive control normal open switch SB2 on the spot; Contactor KM2 energising, the normally opened contact adhesive of KM2, this moment, the blower fan power frequency was just transported row; Control normally closed switch SB1 on the spot through pressing, stop blower fan and just transporting row; Control normal open switch SB3 on the spot through pressing, contactor KM4 energising, the normally opened contact adhesive of KM4, this moment, blower fan power frequency counter-rotating operation was controlled normally closed switch SB1 on the spot through pressing SB1, stopped blower fan counter-rotating operation.
When control switch SA1 gets under the remote status, contact 3,4 conductings of SA1 are through pressing telecontrol normal open switch SC2; Contactor KM2 energising, KM2 normally opened contact energising adhesive, this moment, the blower fan power frequency was just transported row; Through pressing telecontrol normally closed switch SC1, stop blower fan and just transporting row; Through pressing telecontrol normal open switch SC3, contactor KM4 switches on, the normally opened contact adhesive of KM4, and blower fan power frequency counter-rotating operation this moment through pressing SC1 telecontrol normally closed switch SC1, stops the blower fan counter-rotating and moves.
When system just often, when promptly 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 breaks off, and opens circuit by force and breaks off, and closes strong starting system.
The operation and the PLC system independence of the blower fan under the strong starting system control mode; Irrelevant with frequency converter B P; As long as the circuit breaker Q F1 in the control gear, the positive contactor KM2 of power frequency and power frequency counter-rotating contactor KM4 can proper functioning, and this moment, blower fan just can be realized on the spot down or long-range power frequency is just being transported and gone or power frequency is reversed and moved at strong starting system; Through strong starting system the strong wind machine is moved at crucial moment, play the fire-fighting smoke evacuation and send new wind action.
Claims (1)
1. a subway tunnel blower fan control system comprises main circuit, PLC control circuit and opens control circuit by force, and it is characterized in that: said 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 said three-phase breaker QF, frequency converter B P, contactor KM1 is connected across between three live wire L1, L2, the L3 successively, and the output of the main contact of contactor KM1 connects the input of motor M; Parallelly connected contactor KM2 and contactor KM4 respectively between the main contact output terminal of the output terminal of three-phase breaker QF1 and contactor KM1;
Said PLC control circuit comprises circuit breaker Q F2, contactor KM1, KM2, KM4, auxiliary reclay KA4, KA9, KA10, zero line N;
Between the input end of the input termination circuit breaker Q F1 of said circuit breaker Q F2, the output terminal of circuit breaker Q F2 and zero line N a parallelly connected loop is arranged;
The branch road 1 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM4, the normally-closed contact of contactor KM1, the contactor KM2 of auxiliary reclay KA5; The input end of the normally opened contact of KA5 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM2 links to each other with zero line N;
The branch road 2 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM2, the normally-closed contact of contactor KM1, the contactor KM4 of auxiliary reclay KA6; The input end of the normally opened contact of KA6 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM4 links to each other with zero line N;
The branch road 3 of said shunt circuit is composed in series by normally opened contact, the normally-closed contact of contactor KM2, the normally-closed contact of contactor KM4, the contactor KM1 of auxiliary reclay KA3; The input end of the normally opened contact of KA3 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of contactor KM1 links to each other with zero line N;
The branch road 4 of said shunt circuit comprises auxiliary reclay KA9, KA10; Normally opened contact, the auxiliary reclay KA10 of the normally opened contact of auxiliary reclay KA1, auxiliary reclay KA9 series connection back 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 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of auxiliary reclay KA9, KA10 links to each other with zero line N;
The branch road 5 of said shunt circuit comprises an auxiliary reclay KA4, and the input end of KA4 links to each other with the output terminal of circuit breaker Q F2, and the output terminal of KA4 links to each other with zero line N;
The D1 contact that between the input end of the input end of said branch road 4 and branch road 5, is connected PLC power supply power supply circuit breaker Q F3 is connected the D2 contact of circuit breaker Q F3 between the output terminal of the output terminal of said branch road 4 and branch road 5, said D1, D2 contact are the contact of linking;
The said circuit that opens by force is made up of control circuit and circuit for remotely controlling on the spot, comprises on the spot/remote control switch SA1 auxiliary reclay KA4; Said 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; On the spot/and the contact of remote control switch SA1 1,2 is closed to be state of a control on the spot, contact 3,4 closures of SA1 are the telecontrol state;
Said control circuit on the spot comprises controls normally closed switch SB1 on the spot; Control normal open switch SB2, SB3 on the spot; The contact 2 of said SA1 is connected with the input end of controlling normally closed switch SB1 on the spot; The input end of normally-closed contact that the output terminal of controlling normally closed switch SB1 is on the spot controlled input end, the contactor KM4 of normal open switch SB3 respectively with the input end of the normally-closed contact of the input end of controlling normal open switch SB2 on the spot, contactor KM2, on the spot is connected, the output terminal of the output terminal of SB2, the normally-closed contact of KM2 all with the PLC control circuit in parallel branch 1 in the input end of normally-closed contact of contactor KM1 link to each other; The output terminal of the output terminal of SB3, the normally-closed contact of KM4 all with the PLC control circuit in parallel branch 2 in the input end of normally-closed contact of contactor KM1 link to each other;
Said circuit for remotely controlling comprises telecontrol normally closed switch SC1; Telecontrol normal open switch SC2, SC3; The contact 4 of said SA1 is connected with the input end of SC1; The output terminal of SC1 is connected with the input end of the normally opened contact of the input end of the input end of the normally opened contact of the input end of SC2, contactor KM2, SC3, contactor KM4 respectively, the output terminal of the normally opened contact of the output terminal of SC2, contactor KM2 all with the PLC control circuit in parallel branch 1 in the input end of normally-closed contact of contactor KM1 link to each other; The output terminal of the normally opened contact of the output terminal of SC3, contactor KM4 all with the PLC control circuit in parallel branch 2 in the input end of normally-closed contact of contactor KM1 link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202883010U CN202182052U (en) | 2011-08-10 | 2011-08-10 | Fan control system of underground railway tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202883010U CN202182052U (en) | 2011-08-10 | 2011-08-10 | Fan control system of underground railway tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182052U true CN202182052U (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202883010U Withdrawn - After Issue CN202182052U (en) | 2011-08-10 | 2011-08-10 | Fan control system of underground railway tunnel |
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| Country | Link |
|---|---|
| CN (1) | CN202182052U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251980A (en) * | 2011-08-10 | 2011-11-23 | 浙江万可电气设备有限公司 | Subway tunnel fan control system |
| CN105134607A (en) * | 2015-09-08 | 2015-12-09 | 无锡压缩机股份有限公司 | Cooling control system of air-cooled screw compressor |
| CN110652670A (en) * | 2019-10-15 | 2020-01-07 | 中铁轨道交通装备有限公司 | Fire treatment system and control method for straddle type monorail vehicle |
| CN110925229A (en) * | 2018-09-20 | 2020-03-27 | 中国石油天然气股份有限公司 | Control system of indoor fan and indoor fan system |
-
2011
- 2011-08-10 CN CN2011202883010U patent/CN202182052U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251980A (en) * | 2011-08-10 | 2011-11-23 | 浙江万可电气设备有限公司 | Subway tunnel fan control system |
| CN102251980B (en) * | 2011-08-10 | 2014-04-09 | 浙江万可电气设备有限公司 | Subway tunnel fan control system |
| CN105134607A (en) * | 2015-09-08 | 2015-12-09 | 无锡压缩机股份有限公司 | Cooling control system of air-cooled screw compressor |
| CN110925229A (en) * | 2018-09-20 | 2020-03-27 | 中国石油天然气股份有限公司 | Control system of indoor fan and indoor fan system |
| CN110652670A (en) * | 2019-10-15 | 2020-01-07 | 中铁轨道交通装备有限公司 | Fire treatment system and control method for straddle type monorail vehicle |
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