CN204041502U - A kind of cooling blower control system - Google Patents

A kind of cooling blower control system Download PDF

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Publication number
CN204041502U
CN204041502U CN201420489342.XU CN201420489342U CN204041502U CN 204041502 U CN204041502 U CN 204041502U CN 201420489342 U CN201420489342 U CN 201420489342U CN 204041502 U CN204041502 U CN 204041502U
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CN
China
Prior art keywords
blower fan
contactor
control loop
phase
series
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201420489342.XU
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Chinese (zh)
Inventor
卓磊
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Xi Fei (shanghai) Industrial Control Co Ltd
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Xi Fei (shanghai) Industrial Control Co Ltd
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Priority to CN201420489342.XU priority Critical patent/CN204041502U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

A kind of cooling blower control system, for controlling interlocking between blower fan A and blower fan B, switching, it comprises: first, second blower fan power supply circuits; First, second blower fan power supply circuits are also unified into a three-phase circuit; Be connected to the blower fan A of L1, L2 and L3 three-phase output end, blower fan B major loop.The utility model can better meet the demand of execute-in-place, accomplish two Fans each other chain, two power supply circuits are for subsequent use mutually, wherein after a road power supply dead electricity, another road power supply can continue as blower fan and power, the effective stable operation ensureing blower fan system.

Description

A kind of cooling blower control system
Technical field
The utility model relates to a kind of cooling blower control system.
Background technique
Along with the development of science and technology, power station is to for providing the cooling blower system of cooling air more to pay attention to flame detection system.Also more and more higher to the requirement of cooling blower system, cooling blower system must possess duplex feeding power supply feature for subsequent use each other, and stable.Secondly, on-the-spot high temperature, dust etc. also can cause damage to control unit.At present, the configuration level of integration of domestic cooling blower is not high, and configured port is not enough, cause follow-up cannot upgrading.
Model utility content
For solving above-mentioned Problems existing, the purpose of this utility model is to provide a kind of cooling blower control system, and for controlling interlocking between blower fan A and blower fan B, switching, it comprises: first, second blower fan power supply circuits; First, second blower fan power supply circuits are also unified into a three-phase circuit; Be connected to the blower fan A of L1, L2 and L3 three-phase output end, blower fan B major loop.The utility model can better meet the demand of execute-in-place, accomplish two Fans each other chain, two power supply circuits are for subsequent use mutually, wherein after a road power supply dead electricity, another road power supply can continue as blower fan and power, the effective stable operation ensureing blower fan system.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of cooling blower control system, for controlling interlocking between blower fan A and blower fan B, switching, comprising:
First blower fan power supply circuits, comprise: the circuit breaker CB1 being connected in series in the first three phase mains, contactor KM3 normally opened contact, is connected to the three phase converer RM1 of described three phase mains and is connected across quarter-phase circuit in described three phase mains, is connected in series by described contactor KM3 coil, contactor KM4 normally-closed contact, three phase converer RM1 normally opened contact the control loop formed;
Second blower fan power supply circuits, comprise: the circuit breaker CB2 being connected in series in the second three phase mains, contactor KM4 normally opened contact, is connected to the three phase converer RM2 of the second three phase mains and is connected across quarter-phase circuit in the second three phase mains, is connected in series by described contactor KM4 coil, contactor KM3 normally-closed contact, three phase converer RM2 normally opened contact the control loop formed; First, second blower fan power supply circuits are connected in parallel and form L1, L2 and L3 three-phase output end; Electrical interlocks is formed between contactor KM3 and contactor KM4;
Blower fan A major loop, is comprised and is connected to L1, L2 and L3 three-phase output end by contactor KM1 normally opened contact and the motor controller WJB1 of connecting fan A and be connected to the blower fan A control loop of L1, L2 and L3 three-phase output end by transformer and safety fuse cutout; Described blower fan A control loop, comprise: the blower fan A be connected in parallel is control loop, blower fan A telecontrol loop on the spot, with the blower fan A contactor KM2 normally-closed contact KM2-4, contactor KM1 coil, the motor controller WJB1 normally-closed contact that are connected in series of control loop on the spot, blower fan A run indicator HL1 control loop and the first pressure switch; Described blower fan A control loop on the spot, comprising: the blower fan A be sequentially connected in series controls selector switch SA21 on the spot, blower fan A runs button SA1 on the spot; Described blower fan A telecontrol loop, comprising: the blower fan A telecontrol selector switch SA22 be sequentially connected in series, telecontrol enable switch SA22-1, telecontrol stop switch SA22-2 and be connected in parallel in the contactor KM1 normally opened contact KM1-3 at described telecontrol enable switch SA22-1 two ends; Blower fan A run indicator HL1 control loop, is parallel to the link circuit two ends of described contactor KM1 coil and motor controller WJB1 normally-closed contact, and it comprises the blower fan A run indicator HL1 and contactor KM1 normally opened contact KM1-5 that are connected in series; First pressure switch, is connected in parallel in transformer output terminal, and motor controller WJB1 control end is connected to transformer output terminal;
Blower fan B major loop, is comprised and is connected to L1, L2 and L3 three-phase output end by contactor KM2 normally opened contact and the motor controller WJB2 of connecting fan B and be connected to the blower fan B control loop of L1, L2 and L3 three-phase output end by transformer and safety fuse cutout; Described blower fan B control loop, comprise: the blower fan B be connected in parallel on the spot control loop, blower fan B telecontrol loop, with the blower fan B contactor KM1 normally-closed contact KM1-4, contactor KM2 coil, the motor controller WJB2 normally-closed contact that are connected in series of control loop on the spot, blower fan B run indicator HL2 control loop and the second pressure switch; Described blower fan B control loop on the spot, comprising: the blower fan B be sequentially connected in series controls selector switch SA41 on the spot, blower fan B runs button SA3 on the spot; Described blower fan B telecontrol loop, comprising: the blower fan B telecontrol selector switch SA42 be sequentially connected in series, telecontrol enable switch SA42-1, telecontrol stop switch SA42-2; Blower fan B run indicator HL2 control loop, is parallel to the link circuit two ends of described contactor KM2 coil and motor controller WJB2 normally-closed contact, and it comprises the blower fan B run indicator HL2 and contactor KM2 normally opened contact KM2-5 that are connected in series; Second pressure switch, is connected in parallel in transformer output terminal, and motor controller WJB2 control end is connected to transformer output terminal.
Separately, described first three phase mains and the second three phase mains are connected in series with a power monitoring relay respectively.
Compared with prior art, the utility model beneficial effect is:
1) designed by the electrical interlocks of two contactors KM3, KM4, coordinate two three phase converer, realize the switching of two blower fan power supply circuits, two blower fan power supply circuits are for subsequent use each other, prevent the situation causing blower fan normally to run because blower fan power supply circuits damage from occurring;
2) designed by the electrical interlocks of contactor KM1 and contactor KM2, realize blower fan A and blower fan B is chain each other, make no matter to start separately A blower fan or B blower fan under with regard to ground mode or remote mode; When blower fan A break down cannot use time, blower fan B can be started, thus ensure the normal operation of cooling blower;
3) by two motor controllers, control whole major loop and control loop, the servo being realized motor by motor controller is started;
4) on blower fan telecontrol enable switch, be connected in parallel a contactor normally opened contact, blower fan telecontrol loop started by electricity and becomes long startup, ensure normal, the stable operation of blower fan;
5) protection to whole circuit is realized by safety fuse cutout;
6) provide on the spot with long-range two kinds of control modes, ensure the normal operation of blower fan.
Accompanying drawing explanation
Fig. 1 is blower fan power supply circuits schematic diagram in the utility model cooling blower control system.
Fig. 2 is the schematic diagram of blower fan A major loop in the utility model cooling blower control system.
Fig. 3 is the schematic diagram of blower fan B major loop in the utility model cooling blower control system.
Embodiment
See Fig. 1 ~ Fig. 3, a kind of cooling blower control system of the present utility model, for controlling interlocking between blower fan A and blower fan B, switching, comprising:
First blower fan power supply circuits 10, comprise: the circuit breaker CB1 being connected in series in the first three phase mains, contactor KM3 normally opened contact, is connected to the three phase converer RM1 of described three phase mains and is connected across quarter-phase circuit in described three phase mains, is connected in series by described contactor KM3 coil, contactor KM4 normally-closed contact, three phase converer RM1 normally opened contact the control loop formed;
Second blower fan power supply circuits 20, comprise: the circuit breaker CB2 being connected in series in the second three phase mains, contactor KM4 normally opened contact, is connected to the three phase converer RM2 of the second three phase mains and is connected across quarter-phase circuit in the second three phase mains, is connected in series by described contactor KM4 coil, contactor KM3 normally-closed contact, three phase converer RM2 normally opened contact the control loop formed; First, second blower fan power supply circuits are connected in parallel and form L1, L2 and L3 three-phase output end; Electrical interlocks is formed between contactor KM3 and contactor KM4;
Blower fan A major loop 30, is comprised and is connected to L1, L2 and L3 three-phase output end by contactor KM1 normally opened contact and the motor controller WJB1 of connecting fan A and be connected to the blower fan A control loop 3 of L1, L2 and L3 three-phase output end by transformer and safety fuse cutout;
Described blower fan A control loop 3, comprise: the blower fan A be connected in parallel is control loop 31, blower fan A telecontrol loop 32 on the spot, with the blower fan A contactor KM2 normally-closed contact KM2-4, contactor KM1 coil, the motor controller WJB1 normally-closed contact that are connected in series of control loop 31 on the spot, blower fan A run indicator HL1 control loop 33 and the first pressure switch 34;
Described blower fan A control loop 31 on the spot, comprising: the blower fan A be sequentially connected in series controls selector switch SA21 on the spot, blower fan A runs button SA1 on the spot;
Described blower fan A telecontrol loop 32, comprising: the blower fan A telecontrol selector switch SA22 be sequentially connected in series, telecontrol enable switch SA22-1, telecontrol stop switch SA22-2 and be connected in parallel in the contactor KM1 normally opened contact KM1-3 at described telecontrol enable switch SA22-1 two ends;
Blower fan A run indicator HL1 control loop 33, is parallel to the link circuit two ends of described contactor KM1 coil and motor controller WJB1 normally-closed contact, and it comprises the blower fan A run indicator HL1 and contactor KM1 normally opened contact KM1-5 that are connected in series;
First pressure switch 34, is connected in parallel in transformer output terminal, and motor controller WJB1 control end is connected to transformer output terminal;
Blower fan B major loop 40, is comprised and is connected to L1, L2 and L3 three-phase output end by contactor KM2 normally opened contact and the motor controller WJB2 of connecting fan B and be connected to the blower fan B control loop 4 of L1, L2 and L3 three-phase output end by transformer and safety fuse cutout;
Described blower fan B control loop 4, comprise: the blower fan B be connected in parallel on the spot control loop 41, blower fan B telecontrol loop 42, with the blower fan B contactor KM1 normally-closed contact KM1-4, contactor KM2 coil, the motor controller WJB2 normally-closed contact that are connected in series of control loop on the spot, blower fan B run indicator HL2 control loop 43 and the second pressure switch 44;
Described blower fan B control loop 41 on the spot, comprising: the blower fan B be sequentially connected in series controls selector switch SA41 on the spot, blower fan B runs button SA3 on the spot;
Described blower fan B telecontrol loop 42, comprising: the blower fan B telecontrol selector switch SA42 be sequentially connected in series, telecontrol enable switch SA42-1, telecontrol stop switch SA42-2;
Blower fan B run indicator HL2 control loop 43, is parallel to the link circuit two ends of described contactor KM2 coil and motor controller WJB2 normally-closed contact, and it comprises the blower fan B run indicator HL2 and contactor KM2 normally opened contact KM2-5 that are connected in series;
Second pressure switch 44, is connected in parallel in transformer output terminal, and motor controller WJB2 control end is connected to transformer output terminal.
Separately, described first three phase mains and the second three phase mains are connected in series with a power monitoring relay respectively.
Cooling blower control system mode of operation described in the utility model is as follows:
When carrying out telecontrol to cooling blower system blower A, remote control signal is sent by DCS system (not shown), and telecontrol enable switch SA22-1 closes, and contactor KM1 coil obtains electric, and normally opened contact closes, and normally-closed contact disconnects.Now, the blower fan A telecontrol loop 32 of blower fan A major loop 30 becomes long by a startup and starts, and motor controller WJB1 coil energized action, actuating motor starts, and blower fan A runs, and blower fan A run indicator HL1 is bright.
Control on the spot cooling blower system blower A, its step is the same with remote control operation.But telecontrol is preferential, first must obtains the permission of telecontrol when controlling on the spot, switch to blower fan A and control selector switch SA21 on the spot, manually press blower fan A and run button SA1 on the spot and control on the spot.Control on the spot can not carry out with telecontrol simultaneously, to avoid danger.
Blower fan A and blower fan B forms mutual linking by the electrical interlocks of contactor KM1 and contactor KM2, for subsequent use each other.
Generally, blower fan A starts, and blower fan B (standby fan) stops.When blower fan A breaks down stopping, the contactor KM1 coil losing electricity of blower fan A control loop 3, now the normally opened contact of contactor KM1 disconnects, normally-closed contact closes, the action of motor controller WJB1 coil losing electricity, and actuating motor stops, blower fan A stops, and blower fan A run indicator HL1 goes out.Simultaneously, due to the electrical interlocks between contactor KM1 and contactor KM2, when the enabled instruction of blower fan B is assigned, make that blower fan B contactor KM2 normally-closed contact disconnects, coil obtains electric, normally opened contact and closes, motor controller WJB2 coil energized action, actuating motor starts, and blower fan B runs, and blower fan B run indicator HL2 is bright.Complete enabling of blower fan B (i.e. standby fan), ensure that cooling blower normally provides cooling air.
When the first blower fan power supply circuits 10 dead electricity that breaks down is ((not shown by power monitoring relay, down together) tutorial light judges the break-make of described first three phase mains) time, contactor KM3 coil losing electricity, normally opened contact disconnects, normally-closed contact closes, three phase converer RM1 normally opened contact disconnects, due to the electrical interlocks between contactor KM3 and contactor KM4, contactor KM4 coil invocation point, normally opened contact closes, normally-closed contact disconnects, second blower fan power supply circuits 20 start, continue as blower fan A or blower fan B powers, ensure the normal operation of described cooling blower system.
It should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted.Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technological scheme of model utility or equivalent replacement, and not departing from the scope of technical solutions of the utility model, it all should be encompassed in right of the present utility model.

Claims (2)

1. a cooling blower control system, for controlling interlocking between blower fan A and blower fan B, switching, is characterized in that, comprise:
First blower fan power supply circuits, comprise: the circuit breaker CB1 being connected in series in the first three phase mains, contactor KM3 normally opened contact, is connected to the three phase converer RM1 of described three phase mains and is connected across quarter-phase circuit in described three phase mains, is connected in series by described contactor KM3 coil, contactor KM4 normally-closed contact, three phase converer RM1 normally opened contact the control loop formed;
Second blower fan power supply circuits, comprise: the circuit breaker CB2 being connected in series in the second three phase mains, contactor KM4 normally opened contact, is connected to the three phase converer RM2 of the second three phase mains and is connected across quarter-phase circuit in the second three phase mains, is connected in series by described contactor KM4 coil, contactor KM3 normally-closed contact, three phase converer RM2 normally opened contact the control loop formed; First, second blower fan power supply circuits are connected in parallel and form L1, L2 and L3 three-phase output end; Electrical interlocks is formed between contactor KM3 and contactor KM4;
Blower fan A major loop, is comprised and is connected to L1, L2 and L3 three-phase output end by contactor KM1 normally opened contact and the motor controller WJB1 of connecting fan A and be connected to the blower fan A control loop of L1, L2 and L3 three-phase output end by transformer and safety fuse cutout;
Described blower fan A control loop, comprise: the blower fan A be connected in parallel is control loop, blower fan A telecontrol loop on the spot, with the blower fan A contactor KM2 normally-closed contact KM2-4, contactor KM1 coil, the motor controller WJB1 normally-closed contact that are connected in series of control loop on the spot, blower fan A run indicator HL1 control loop and the first pressure switch;
Described blower fan A control loop on the spot, comprising: the blower fan A be sequentially connected in series controls selector switch SA21 on the spot, blower fan A runs button SA1 on the spot;
Described blower fan A telecontrol loop, comprising: the blower fan A telecontrol selector switch SA22 be sequentially connected in series, telecontrol enable switch SA22-1, telecontrol stop switch SA22-2 and be connected in parallel in the contactor KM1 normally opened contact KM1-3 at described telecontrol enable switch SA22-1 two ends;
Blower fan A run indicator HL1 control loop, is parallel to the link circuit two ends of described contactor KM1 coil and motor controller WJB1 normally-closed contact, and it comprises the blower fan A run indicator HL1 and contactor KM1 normally opened contact KM1-5 that are connected in series;
First pressure switch, is connected in parallel in transformer output terminal, and motor controller WJB1 control end is connected to transformer output terminal;
Blower fan B major loop, is comprised and is connected to L1, L2 and L3 three-phase output end by contactor KM2 normally opened contact and the motor controller WJB2 of connecting fan B and be connected to the blower fan B control loop of L1, L2 and L3 three-phase output end by transformer and safety fuse cutout;
Described blower fan B control loop, comprise: the blower fan B be connected in parallel on the spot control loop, blower fan B telecontrol loop, with the blower fan B contactor KM1 normally-closed contact KM1-4, contactor KM2 coil, the motor controller WJB2 normally-closed contact that are connected in series of control loop on the spot, blower fan B run indicator HL2 control loop and the second pressure switch;
Described blower fan B control loop on the spot, comprising: the blower fan B be sequentially connected in series controls selector switch SA41 on the spot, blower fan B runs button SA3 on the spot;
Described blower fan B telecontrol loop, comprising: the blower fan B telecontrol selector switch SA42 be sequentially connected in series, telecontrol enable switch SA42-1, telecontrol stop switch SA42-2;
Blower fan B run indicator HL2 control loop, is parallel to the link circuit two ends of described contactor KM2 coil and motor controller WJB2 normally-closed contact, and it comprises the blower fan B run indicator HL2 and contactor KM2 normally opened contact KM2-5 that are connected in series;
Second pressure switch, is connected in parallel in transformer output terminal, and motor controller WJB2 control end is connected to transformer output terminal.
2. cooling blower control system according to claim 1, is characterized in that, described first three phase mains and the second three phase mains are connected in series with a power monitoring relay respectively.
CN201420489342.XU 2014-08-28 2014-08-28 A kind of cooling blower control system Expired - Fee Related CN204041502U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420489342.XU CN204041502U (en) 2014-08-28 2014-08-28 A kind of cooling blower control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420489342.XU CN204041502U (en) 2014-08-28 2014-08-28 A kind of cooling blower control system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110091487A (en) * 2019-04-26 2019-08-06 湖北爱博制造有限公司 A kind of vacuum system for PVC board process units
CN111156186A (en) * 2019-12-31 2020-05-15 深圳粤鹏环保技术股份有限公司 One-use one-standby two-equipment local/remote start-stop control circuit and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110091487A (en) * 2019-04-26 2019-08-06 湖北爱博制造有限公司 A kind of vacuum system for PVC board process units
CN111156186A (en) * 2019-12-31 2020-05-15 深圳粤鹏环保技术股份有限公司 One-use one-standby two-equipment local/remote start-stop control circuit and method
CN111156186B (en) * 2019-12-31 2022-02-11 深圳粤鹏环保技术股份有限公司 One-use one-standby two-equipment local/remote start-stop control circuit and method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141224

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CF01 Termination of patent right due to non-payment of annual fee