CN2265028Y

CN2265028Y - Automatic controller of motor for fire-fighting water pump

Info

Publication number: CN2265028Y
Application number: CN 96232658
Authority: CN
Inventors: 刘三翠; 刘刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-06
Filing date: 1996-02-06
Publication date: 1997-10-15
Anticipated expiration: 2006-02-06

Abstract

The utility model provides an automatic controller of a motor for a fire-fighting water pump. The utility model is provided with a control circuit which at least comprises two motor circuits. A control switch circuit, an indication alarm circuit, an automatic switchover circuit, a starting control circuit which are in the control circuit are connected in parallel, and then are connected in series in a main circuit. Two of more than two special motors for fire-fighting can be simultaneously controlled to start by the utility model. The utility model can be remotely controlled and alarm at long range. The utility model has convenient operation and reliable action.

Description

Fire pump definite purpose motor automatic control equipment

The utility model relates to a kind of automatic control equipment, particularly be a kind of fire pump definite purpose motor automatic control equipment.

The present domestic automatic control equipment that is exclusively used on the fire pump motor special that do not have.Generally be to adopt the commercially available motor that starts fire pump as auto-transformer starter.But the electric motor starting that can only control a fire pump of this auto-transformer starter uses trouble.

In view of above reason, the purpose of this utility model for provide a kind of can at least two fire pump motor specials of control, easy to operate fire pump definite purpose motor automatic control equipment.

The major loop, the control loop that contain at least two electric motor loops are arranged in the utility model, be connected on again after the control switch loop in the control loop, indication alarm circuit, automatic switchover loop, starting control loop, the operating loop parallel connection in the major loop (referring to Fig. 1～Fig. 5).

Two electric motor loops are arranged in the above-mentioned major loop, thermal relay thermal element FR1, A.C. contactor K4 and motor M 1 are connected into an electric motor loop, thermal relay element FR2, A.C. contactor K5 and motor M 1 are connected into an electric motor loop, connect with A.C. contactor K3, air switch ZK after the two electric motor loop parallel connections, simultaneously A.C. contactor K2, transformer ZOB, A.C. contactor K1 are connected into (referring to Fig. 2) in parallel with A.C. contactor K3 behind the transformer circuit, many increase thermal relay thermal elements, A.C. contactor just can be controlled a motor, i.e. motor more than two more.

Instrument transformer LH is arranged, instrument transformer LH connect with A.C. contactor K3, K4 (referring to Fig. 3) in the above-mentioned major loop.

The utility model can be controlled the starting of the fire-fighting motor special more than two or two simultaneously, and remote-controlled and long-distance alarm, and is easy to operate, and reliable in action is cheap.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is 17-75KW fire pump motor special (controlling two a motors) automatic control equipment.

Fig. 3 is 80-315KW fire pump motor special (controlling two a motors) automatic control equipment.

Fig. 4 is 80-315KW fire pump motor special (controlling three a motors) automatic control equipment.

Fig. 5 is 17-75KW fire pump motor special (controlling three a motors) automatic control equipment.

Embodiment 1:

Fig. 1, Fig. 2 have provided embodiment 1 figure of the present utility model.Major loop 1, control loop 2 are arranged in the utility model, control switch loop 3, indication alarm circuit 4, automatic switchover loop 5, starting control loop 6, operating loop 7 are arranged in the control loop.Thermal relay thermal element FR1, A.C. contactor K4 and motor M 1 are connected into an electric motor loop in two electric motor loops in the major loop 1, thermal relay thermal element FR2, A.C. contactor K5 and motor M 2 are connected into an electric motor loop, connect with A.C. contactor K3, air switch ZK after the two loop parallel connections, simultaneously A.C. contactor K2, transformer ZOB, A.C. contactor K1 are connected into behind the transformer circuit in parallel with A.C. contactor K3.Stopping in the control switch loop 3 in the control loop 2 connects button TA1, starting button QA1 (contactor K7 self-sustaining) K coil tandem, TA1, QA1 all and a button so that remote control.The normally opened contact of A.C. contactor K4 in the indication alarm circuit 4 is connected with indicator light H2, the normally opened contact of A.C. contactor K5 is connected with indicator light H3, the normally-closed contact of A.C. contactor K4, auxiliary relay KM2 normally opened contact are connected with electric whistle DDK, KM2 normally-closed contact, K5 normally-closed contact are connected with electric bell DL, and be last in parallel mutually.K4 normally opened contact in the automatic switchover loop 5 (KM2 self-shield), K5 normally-closed contact are connected with the KM2 coil; K2 normally-closed contact connect with KM2 normally opened contact, auxiliary relay KM3 coil back and KM2 wire loop and connecing; the normally-closed contact of thermal relay FR1, FR2 is serially connected on the phase line of control power supply; simultaneously with the timing closing contact of time relay KS1 and at the two ends of FR1; the normally-closed contact of FR1 becomes a loop with the coil tandem of KS1, the normally closed self-locking FR1 of KS1.KM3 normally-closed contact in the starting control loop 6 is connected with K4 coil, KM5 normally-closed contact, KM4 coil and K4 coils from parallel connection of coils, KM3 often opens (K3 often opens self-locking) and connects with KM4 normally-closed contact, K5 coil, K5 coil and KM5 coils from parallel connection of coils, KM1 normally-closed contact and K1 coils from parallel connection of coils, each wire loop are in parallel again.Connect with the KM1 coil in KS timing closing contact (KM1 self-locking) in the operating loop 7, KM1 often opens, and K1 is normally closed, and K2 is normally closed to connect two wire loop parallel connections with the K3 coil.

The air switch ZK that closes, power supply indicator is bright, and voltmeter has indication.

Press starting button QA1, contactor K adhesive and self-locking, the H1 lamp is bright, simultaneously the K4 adhesive, the H2 lamp is bright, KM2 adhesive and self-insurance, also adhesive of K1, K2, KS adhesive and trigger, motor M 1 begins starting, KM1 adhesive and self-sustaining after the KS delay arrival time, K1 outage, K2 also cut off the power supply, the K3 adhesive, motor M 1 beginning total head operation; One and M1 faults such as overcurrent, short circuit take place, the FR1 normally-closed contact disconnects K1, K2, K3, K4 is all cut off the power supply, the H2 lamp goes out, motor M 1 stall, electric whistle sends alarm signal.

While KS1, adhesive immediately and self-locking, trigger (time is very short).Because still adhesive of KM2 when M1 is out of order, so also adhesive of KM3.After the KS1 delay arrival time, connect control loop again, K5 adhesive self-locking, the H3 lamp is bright, K1, K2 adhesive again, KS is adhesive and time-delay also, and disconnected (DD the removes warning) KM3 of KM2 is also disconnected simultaneously, and M2 also begins starting.When delay time then after, K1, K2 outage, thereby KM1 adhesive and self-sustaining K3 adhesive, the operation of second motor M 2 total head.In case because the loose contact of thermal relay FR1 normally opened contact, KS can not adhesive, during second motor fail to start, should press danger button QA3 (remote control) immediately and force the 2nd pump motor to start immediately and turn round.

This device can recognize in time that in order to make the fire fighter working condition of motor (water pump) can be connected into remote demonstration and warning to H2, H3, DD, DL.

Present embodiment is applicable on the 17-75KW fire pump motor special (controlling two motors).

Embodiment 2:

Fig. 1, Fig. 3 have provided embodiment 2 figure of the present utility model.Present embodiment 2 is basic same with embodiment 1, and not existing together is to have increased by four instrument transformers in the major loop, and their primary winding is connected with K3, K4.The K3 normally-closed contact is connected with K5 normally-closed contact, K4 coil in start loop, and KM3 often opens (K5) self-locking, the K4 normally-closed contact is connected with the K5 coil, removes KM4, KM5.Present embodiment is applicable on 80～315KW fire pump motor special (controlling two motors).

Embodiment 3:

Fig. 1, Fig. 4 have provided novel embodiment 3 figure of this reality.Present embodiment 3 basic with embodiment 1 with, do not exist together be after the 2nd motor (water pump) breaks down automatically (or manually) start the 3rd motor (water pump) and move water supply, the element that increases in the circuit is as follows:

1. major loop: (comprise that contactor K6, thermal relay FR3, current transformer (LH5, LH6) connected mode are the same with the 2nd electric motor loop.

2. set up the alarm circuit of No. 3 motors in the indication alarm circuit in the control loop, concrete connected mode is: normally closed, the KM3 of K4 often open and normally closed and the electric whistle of K5 is contacted, normally closed and the electric whistle of often the opening of normally closed, the KM4 of K5, K6 is connected, K6 normally closed, KM2 is normally closed, KM3 is normally closed connects with electric bell DL2, the branch road of respectively reporting to the police is connected in parallel in the control loop again.

3. the loop of automaticallying switch has increased a time relay KS2, and the connected mode of auxiliary relay KM4, a KS2 is the same with the mode of KS1, the coil of KM4 with after the normally opened contact of KM3 is connected again with the coils from parallel connection of coils of KS2; The timing closing contact of KS2 is with the normally-closed contact short circuit of FR2, FR1; The coil of KM2 is connected with the normally-closed contact of K6.

4. start loop has increased the start loop of the 3rd motor (water pump), and its connected mode is the coil tandem of normally closed, K6 of normally closed, K5 of normally opened contact (K6 self-sustaining) and the KM5 of KM4; The coil of KM7 and the coils from parallel connection of coils of K6; KM3 often open (K5 self-sustaining) connects with the coil normally closed, K5 normally closed, KM4 of K4.

Wherein KM5, KM6, KM7 be because K4, K5, K6 attached help the contact not enough and set up three merely hit a relay (75KW following KM6 arranged, 75KW is above does not have KM6).

The operation principle of 3 fire pumps of control is as follows:

1. press starting button QA1, contactor K adhesive and self-insurance, the H1 lamp is bright, contactor K1, K2, K4 adhesive simultaneously, time relay K5 adhesive, also adhesive of auxiliary relay KM2, the H2 lamp is bright, this moment, the 1st motor began starting.After the KS delay time reaches, KM1 adhesive and self-insurance, K1, K2, K3 dead electricity, K3 adhesive, the 1st motor total head operation.

2. if the 1st motor (or water pump) breaks down, then the FR1 normally-closed contact disconnects, and makes all dead electricity such as K4, K3, KM1, K1, K2, KS, and the 1st motor shuts down immediately, and the H2 lamp extinguishes, and electric whistle is reported to the police.So this moment is because still also adhesive of adhesive KM3 of KM2, so coil of the KS1 time relay that often switches on of FR when the FR1 normally-closed contact disconnects, make the timing closing contact of KS1 delay time back (1～3 second) the control power connection, K1, K2, K3 adhesive again, K5 adhesive and self-insurance, the H3 lamp is bright, electric whistle is removed and is reported to the police, the 2nd electric motor starting, after the KS delay arrival time, KM1 adhesive and self-insurance K1, K2, KS outage, K3 adhesive be the 2nd motor total head operation then.

3. break down as if the 2nd motor or water pump, the normally-closed contact of FR2 disconnects, and makes that control loop dead electricity, K1, K2, K3, K4, K5, KM1, KS etc. all cut off the power supply, the 2nd motor is out of service.The H3 lamp extinguishes, and electric bell DL1 sends alarm signal.At this moment, the FR2 normally-closed contact is connected the coil of KS2, after the KS2 delay arrival time (1～3 second), its timing closing contact adhesive again near the control loop power supply, make K, K2, Ks adhesive again, K6 is adhesive also, the H4 lamp is bright, and electric bell DL1 removes, the 3rd electric motor starting running, after the KS delay arrival time, the KM1 adhesive, K1, K2, KS outage, the 3rd motor total head operation of K3 adhesive (K6 is adhesive still).

4. if the 3rd motor is out of order again, then shut down immediately, cut-out control power supply, electric bell DL2 send warning.

5. if during the normally-closed contact loose contact of FR1, FR2, FR3, can artificially press emergency starting button QA3, QA4 immediately, get final product.

Present embodiment is applicable on 80～315KW fire pump motor special (controlling three motors).

Embodiment 4:

Fig. 1, Fig. 5 have provided embodiment 4 figure of the present utility model.Present embodiment 4 is basic same with embodiment 3, do not exist together is that KM3 often opens (K5 self-sustaining) in the start loop, KM5 is normally closed, KM4 is normally closed, the K5 coil is connected, the KM6 coil is often opened (K6 self-sustaining) with K5 coils from parallel connection of coils, KM4, KM5 is normally closed, KM6 is normally closed, the K6 coil is connected, KM7 coil and KM6 coils from parallel connection of coils.

Present embodiment is applicable on the 17-75KW fire pump motor special (controlling three motors).

Claims

1, fire pump definite purpose motor automatic control equipment, it is characterized in that major loop, the control loop that contains at least two electric motor loops arranged in the described automatic control equipment, be connected in the major loop again after the control switch loop in the control loop, indication alarm circuit, automatic switchover loop, starting control loop, the operating loop parallel connection.

2, fire pump definite purpose motor automatic control equipment as claimed in claim 1, it is characterized in that two electric motor loops are arranged in the described major loop, thermal relay thermal element FR1, A.C. contactor K4 and motor M 1 are connected into an electric motor loop, thermal relay element FR2, A.C. contactor K5 and motor M 2 are connected into an electric motor loop, connect with A.C. contactor K3, air switch ZK after the two electric motor loop parallel connections, while A.C. contactor K2, transformer ZOB, it is in parallel with A.C. contactor K3 that A.C. contactor K1 is connected into transformer circuit.

3, fire pump definite purpose motor automatic control equipment as claimed in claim 2 is characterized in that instrument transformer LH is arranged in the described major loop, and instrument transformer LH connects with A.C. contactor K3, K4.