CN209925183U - Main/standby electrical control circuit of spray pump - Google Patents
Main/standby electrical control circuit of spray pump Download PDFInfo
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- CN209925183U CN209925183U CN201920808195.0U CN201920808195U CN209925183U CN 209925183 U CN209925183 U CN 209925183U CN 201920808195 U CN201920808195 U CN 201920808195U CN 209925183 U CN209925183 U CN 209925183U
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Abstract
The utility model provides a pump activestandby electrical control circuit sprays, include: the system comprises a main switch QF, contactors KM1, KM2, KM3, a current transformer CT, an automatic/manual change-over switch SA1, a diesel/electric change-over switch SA2, a motor controller U1, relays KA0, KA1, KA2, KA3, a timer KT, a pressure switch P, relays KC, 1KA and 2 KA; the utility model discloses can choose optional charge pump or firewood pump as the main pump, when the main pump starts failure and breaks down, be equipped with the pump and can drop into the operation automatically. The electric pump can be switched automatically/manually. The remote monitoring and alarming function is realized.
Description
Technical Field
The utility model belongs to the technical field of the automatic control technique of fire control and specifically relates to a spray pump activestandby electrical control circuit.
Background
At present, automatic spraying systems are mostly installed in office buildings and plants; when a fire disaster occurs, the temperature sensor detects that the temperature exceeds a threshold value, the spray head acts, and water is sprayed to extinguish the fire;
the spray pump supplies water for the spray head, and in order to meet the technical specification of fire water supply and hydrant systems of GB509744-2014, the spray system needs to have the continuous water supply capacity;
when the spray pump adopted single charge pump or diesel pump (the utility model discloses for short the diesel pump), all probably because start or operation failure lead to can not continuously supplying water, for this reason, need use any pump of charge pump or diesel pump as the main pump, when the main pump starts failure or trouble, the spare pump can the automatic operation that drops into.
Disclosure of Invention
The utility model aims at overcoming the not enough of existence among the prior art, providing a spray pump activestandby electrical control circuit, realized spraying pump automatic start to and activestandby pump automatic switch-over's function. The utility model adopts the technical proposal that:
a spray pump active-standby electrical control circuit comprises:
the system comprises a main switch QF, contactors KM1, KM2, KM3, a current transformer CT, an automatic/manual change-over switch SA1, a diesel/electric change-over switch SA2, a motor controller U1, relays KA0, KA1, KA2, KA3, a timer KT, a pressure switch P, relays KC, 1KA and 2 KA;
one end of a main contact QF-0 of the main switch QF is connected with a three-phase live wire, the other end of the main contact QF-0 of the main switch QF is connected with one end of a main contact KM1-0 of a contactor KM1, and the other end of the main contact KM1-0 of the contactor KM1 is respectively connected with the ends of U1-1, V1-1 and W1-1 of the motor M through three wires; a current transformer CT is arranged on a line between a main contact KM1-0 of the contactor KM1 and the motor M, and is connected with a signal input end of a motor controller U1;
the U1-1 end of motor M connects with one end of the first contact in the contactor KM2 main contact KM2-0, the other end of the first contact in the contactor KM2 main contact KM2-0 connects with the W1-2 end of motor M;
the V1-1 end of the motor M is connected with one end of a second contact in the main contact KM2-0 of the contactor KM2, and the other end of the second contact in the main contact KM2-0 of the contactor KM2 is connected with the U1-2 end of the motor M;
the W1-1 end of the motor M is connected with one end of a third contact in a main contact KM2 KM2-0, and the other end of the third contact in a main contact KM2 KM2-0 is connected with the V1-2 end of the motor M;
one ends of three contacts in a main contact KM3-0 of a contactor KM3 are respectively connected with the W1-2 end, the U1-2 end and the V1-2 end of a motor M, and the other ends of the three contacts are connected;
one live wire is connected with one end of a fuse FU, the other end of the fuse FU is connected with a first node, the power supply end of a motor controller U1 and one end of a normally open contact KA1-2 of a relay KA1, the other end of the normally open contact KA1-2 of the relay KA1 is connected with one end of a normally closed contact KA2-1 of the relay KA2, the other end of the normally closed contact KA2-1 of the relay KA2 is connected with one end of a normally open contact SA1-1 and one end of a normally closed contact SA1-2 of an automatic/manual change-over switch SA1, and the other end of the normally open contact SA1-1 is connected with one; the other end of the normally closed contact SA1-2 is connected with one end of a normally closed contact SB1-1 in the switch SB1, the other end of the normally closed contact SB1-1 is connected with one end of a switch SB2 and one end of a normally open contact KM1-2 of a contactor KM1, the other end of the normally open contact KA3-1 of the relay KA3 is connected with the other end of the switch SB2, one end of a normally closed contact KA0-1 of a relay KA0, one end of a normally open contact KM1-1 of a contactor KM1 and one end of a normally open contact; the other end of the contactor KM1 normally open contact KM1-2 is connected with the other end of the contactor KM1 normally open contact KM1-1 and the other end of the contactor KM3 normally open contact KM3-1, one end of the relay KA0 normally open contact KA0-2, one end of a contactor KM1 coil, one end of a delay contact ST in a motor controller U1 and one end of a relay KA0 normally open contact KA0-3, and the other end of the delay contact ST is connected with the other end of the relay KA0 normally open contact KA0-3 and one end of a relay KA0 coil; the other end of the coil of the contactor KM1 and the other end of the coil of the relay KA0 are connected with one end of a protection switch K1 in a motor controller U1; the other end of the protection switch K1 is connected with a neutral line N;
the other end of the normally closed contact KA0-1 of the relay KA0 is connected with one end of a normally closed contact KM2 KM2-1, the other end of the normally closed contact KM2 KM2-1 is connected with one end of a coil of a contactor KM3, and the other end of the coil of the contactor KM3 is connected with a neutral wire N;
the other end of a normally open contact KA0-2 of the relay KA0 is connected with one end of a normally closed contact KM3 KM3-2, the other end of a normally closed contact KM3 KM3-2 is connected with one end of a coil of a contactor KM2, and the other end of the coil of the contactor KM2 is connected with a neutral wire N;
one end of the pressure switch P is connected with a direct-current voltage anode, the other end of the pressure switch P is connected with one end of a relay 1KA coil, and the other end of the relay 1KA coil is connected with a direct-current voltage cathode;
one end of a diesel pump fault output switch CK1 is connected with a direct-current voltage anode, the other end of the diesel pump fault output switch CK1 is connected with one end of a relay KC coil, the other end of the relay KC coil is connected with a direct-current voltage cathode, one end of a diesel pump operation output switch CK2 is connected with the direct-current voltage anode, the other end of the diesel pump operation output switch CK2 is connected with one end of a relay 2KA coil, and the other end of the relay 2KA coil is connected;
one end of the power indicator HY1 is connected with the first node, and the other end is connected with the neutral line N;
one end of a normally open contact KM2-2 of the contactor KM2 is connected with a first node, the other end of the normally open contact KM2-2 is connected with one end of a buzzer HY2, and the other end of the buzzer Y2 is connected with a neutral line N;
one end of a normally open contact 2KA-1 of the relay 2KA is connected with the first node, the other end of the normally open contact is connected with one end of a buzzer HY3, and the other end of the buzzer HY3 is connected with a neutral line N;
one end of an auxiliary normally open contact QF-1 of the main switch QF is connected with a first node, the other end of the auxiliary normally open contact QF-1 of the main switch QF is connected with one end of a normally open contact SA2-1 and one end of a normally open contact KC-1 in a diesel/electric conversion switch SA2, the other end of the normally open contact SA2-1 and the other end of the normally open contact KC-1 in the diesel/electric conversion switch SA2 are connected with one end of a normally closed contact KA2-2 of a relay KA2, the other end of the normally closed contact KA2-2 of the relay KA2 is connected with one end of a coil of the relay KA 1;
one end of a normally open contact KA2-3 of the relay KA2 is connected with the first node, the other end of the normally open contact KA-1 of the timer KT is connected with one end of an electrified delay relay normally open contact KT-1, the other end of the electrified delay relay normally open contact KT-1 is connected with one end of a coil of the relay KA2 and one end of a start failure indicator HY4, and the other end of the start failure indicator HY4 and the other end of the coil of the relay KA2 are connected with a neutral line N;
one end of a normally open contact KA1-1 of the relay KA1 is connected with a first node, the other end of the normally open contact KA3-2 of the relay KA3, one end of a normally open contact 1KA-1 of the relay 1KA and one end of a normally open contact KA3-3 of the relay KA3 are connected with the first node; the other end of the normally open contact KA3-2 of the relay KA3 is connected with the other end of the normally open contact KA2-3 of the relay KA2 and one end of the normally closed contact KM2 KM2-3 of the contactor KM2 KM2-3 is connected with one end of a reset switch SB4, the other end of the reset switch SB4 is connected with one end of a normally open contact SA1-3 in the automatic/manual change-over switch SA1, the other end of the normally open contact SA1-3 is connected with one end of a timer KT, and the other end of the timer KT is connected with a;
the other end of a normally open contact 1KA-1 of the relay 1KA and the other end of a normally open contact KA3-3 of the relay KA3 are connected with one end of a normally closed contact SB1-2 in a switch SB1, the other end of the normally closed contact SB1-2 is connected with one end of a switch SB5, the other end of the switch SB5 is connected with one end of a coil of a relay KA3, and the other end of the coil of the relay KA3 is connected with a neutral line N;
one end of a normally open contact SA2-2 in the diesel/electric conversion switch SA2 is connected with one end of a normally closed contact 1KA-2 of the relay 1KA, the other end of the normally open contact SA2-2 is connected with one end of a normally closed contact KA2-4 of the relay KA2, and the other end of the normally closed contact KA2-4 of the relay KA2 is connected with the other end of the normally closed contact 1KA-2 of the relay 1 KA;
one end of a normally open contact SA2-2 and the other end of a normally closed contact KA2-4 of a relay KA2 in the diesel/electric conversion switch SA2 are used for being connected with an input starting end of a diesel pump.
Furthermore, the device also comprises an indicator light HR, and two ends of the indicator light HR are respectively connected with two ends of a coil of the contactor KM 2.
Furthermore, the relay also comprises a switch SB3, one end of the switch SB3 is connected with the positive pole of the direct-current voltage, and the other end is connected with one end of the coil of the relay 1 KA.
The utility model has the advantages that:
1) an electric pump or a diesel pump can be selected as a main pump, and when the main pump fails to start and fails, the standby pump can be automatically put into operation.
2) The electric pump can be switched automatically/manually.
3) The remote monitoring and alarming function is realized.
Drawings
Fig. 1 is a schematic diagram of a first part of an electrical schematic diagram of the present invention.
Fig. 2 is a schematic diagram of a second part of an electrical schematic diagram of the present invention.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
As shown in fig. 1, the main/standby electrical control circuit of the spray pump includes:
the system comprises a main switch QF, contactors KM1, KM2, KM3, a current transformer CT, an automatic/manual change-over switch SA1, a diesel/electric change-over switch SA2, a motor controller U1, relays KA0, KA1, KA2, KA3, a timer KT, a pressure switch P, relays KC, 1KA and 2 KA;
one end of a main contact QF-0 of the main switch QF is connected with a three-phase live wire, the other end of the main contact QF-0 of the main switch QF is connected with one end of a main contact KM1-0 of a contactor KM1, and the other end of the main contact KM1-0 of the contactor KM1 is respectively connected with the ends of U1-1, V1-1 and W1-1 of the motor M through three wires; a current transformer CT is arranged on a line between a main contact KM1-0 of the contactor KM1 and the motor M, and is connected with a signal input end of a motor controller U1;
the U1-1 end of motor M connects with one end of the first contact in the contactor KM2 main contact KM2-0, the other end of the first contact in the contactor KM2 main contact KM2-0 connects with the W1-2 end of motor M;
the V1-1 end of the motor M is connected with one end of a second contact in the main contact KM2-0 of the contactor KM2, and the other end of the second contact in the main contact KM2-0 of the contactor KM2 is connected with the U1-2 end of the motor M;
the W1-1 end of the motor M is connected with one end of a third contact in a main contact KM2 KM2-0, and the other end of the third contact in a main contact KM2 KM2-0 is connected with the V1-2 end of the motor M;
one ends of three contacts in a main contact KM3-0 of a contactor KM3 are respectively connected with the W1-2 end, the U1-2 end and the V1-2 end of a motor M, and the other ends of the three contacts are connected;
a live wire is connected with one end of a fuse FU, the other end of the fuse FU is connected with a first node 1, the power supply end of a motor controller U1 and one end of a normally open contact KA1-2 of a relay KA1, the other end of the normally open contact KA1-2 of the relay KA1 is connected with one end of a normally closed contact KA2-1 of a relay KA2, the other end of the normally closed contact KA2-1 of the relay KA2 is connected with one end of a normally open contact SA1-1 and one end of a normally closed contact SA1-2 of an automatic/manual change-over switch SA1, and the other end of the normally open contact SA1-1 is connected with one; the other end of the normally closed contact SA1-2 is connected with one end of a normally closed contact SB1-1 in the switch SB1, the other end of the normally closed contact SB1-1 is connected with one end of a switch SB2 and one end of a normally open contact KM1-2 of a contactor KM1, the other end of the normally open contact KA3-1 of the relay KA3 is connected with the other end of the switch SB2, one end of a normally closed contact KA0-1 of a relay KA0, one end of a normally open contact KM1-1 of a contactor KM1 and one end of a normally open contact; the other end of the contactor KM1 normally open contact KM1-2 is connected with the other end of the contactor KM1 normally open contact KM1-1 and the other end of the contactor KM3 normally open contact KM3-1, one end of the relay KA0 normally open contact KA0-2, one end of a contactor KM1 coil, one end of a delay contact ST in a motor controller U1 and one end of a relay KA0 normally open contact KA0-3, and the other end of the delay contact ST is connected with the other end of the relay KA0 normally open contact KA0-3 and one end of a relay KA0 coil; the other end of the coil of the contactor KM1 and the other end of the coil of the relay KA0 are connected with one end of a protection switch K1 in a motor controller U1; the other end of the protection switch K1 is connected with a neutral line N;
the other end of the normally closed contact KA0-1 of the relay KA0 is connected with one end of a normally closed contact KM2 KM2-1, the other end of the normally closed contact KM2 KM2-1 is connected with one end of a coil of a contactor KM3, and the other end of the coil of the contactor KM3 is connected with a neutral wire N;
the other end of a normally open contact KA0-2 of the relay KA0 is connected with one end of a normally closed contact KM3-2 of a contactor KM3, the other end of a normally closed contact KM3-2 of a contactor KM3 is connected with one end of a coil of a contactor KM2 and one end of an indicator light HR, and the other end of the coil of the contactor KM2 and the other end of the indicator light HR are connected with a neutral line N;
one end of the pressure switch P is connected with a direct-current voltage anode, the other end of the pressure switch P is connected with one end of a relay 1KA coil, and the other end of the relay 1KA coil is connected with a direct-current voltage cathode;
one end of the switch SB3 is connected with the positive pole of the direct current voltage, and the other end is connected with one end of the coil of the relay 1 KA;
one end of a diesel pump fault output switch CK1 is connected with a direct-current voltage anode, the other end of the diesel pump fault output switch CK1 is connected with one end of a relay KC coil, the other end of the relay KC coil is connected with a direct-current voltage cathode, one end of a diesel pump operation output switch CK2 is connected with the direct-current voltage anode, the other end of the diesel pump operation output switch CK2 is connected with one end of a relay 2KA coil, and the other end of the relay 2KA coil is connected;
the direct-current voltage connected with the pressure switch P, the diesel pump fault output switch CK1 and the diesel pump operation output switch CK2 is 24 v;
one end of the power indicator HY1 is connected with the first node 1, and the other end is connected with the neutral line N;
one end of a normally open contact KM2-2 of the contactor KM2 is connected with a first node 1, the other end of the normally open contact KM2-2 is connected with one end of a buzzer HY2, and the other end of the buzzer Y2 is connected with a neutral line N;
one end of a normally open contact 2KA-1 of the relay 2KA is connected with the first node 1, the other end of the normally open contact is connected with one end of a buzzer HY3, and the other end of the buzzer HY3 is connected with a neutral line N;
one end of an auxiliary normally open contact QF-1 of the main switch QF is connected with a first node 1, the other end of the auxiliary normally open contact QF-1 of the main switch QF is connected with one end of a normally open contact SA2-1 in a diesel/electric conversion switch SA2 and one end of a normally open contact KC-1 of a relay KC, the other end of the normally open contact SA2-1 and the other end of the normally open contact KC-1 in the diesel/electric conversion switch SA2 are connected with one end of a normally closed contact KA2-2 of a relay KA2, the other end of the normally closed contact KA2-2 of the relay 5638 is connected with one end of a coil of the relay;
one end of a normally open contact KA2-3 of the relay KA2 is connected with the first node 1, the other end of the normally open contact KA2-3 of the timer KT is connected with one end of a normally open contact KT-1 of an electrified delay relay, the other end of the normally open contact KT-1 of the electrified delay relay is connected with one end of a coil of the relay KA2 and one end of a start failure indicator HY4, and the other end of the start failure indicator HY4 and the other end of the coil of the relay KA2 are;
one end of a normally open contact KA1-1 of the relay KA1 is connected with the first node 1, and the other end of the normally open contact KA3-2 of the relay KA3, one end of a normally open contact 1KA-1 of the relay 1KA and one end of a normally open contact KA3-3 of the relay KA3 are connected with the other end of the normally open contact KA 352; the other end of the normally open contact KA3-2 of the relay KA3 is connected with the other end of the normally open contact KA2-3 of the relay KA2 and one end of the normally closed contact KM2 KM2-3 of the contactor KM2 KM2-3 is connected with one end of a reset switch SB4, the other end of the reset switch SB4 is connected with one end of a normally open contact SA1-3 in the automatic/manual change-over switch SA1, the other end of the normally open contact SA1-3 is connected with one end of a timer KT, and the other end of the timer KT is connected with a;
the other end of a normally open contact 1KA-1 of the relay 1KA and the other end of a normally open contact KA3-3 of the relay KA3 are connected with one end of a normally closed contact SB1-2 in a switch SB1, the other end of the normally closed contact SB1-2 is connected with one end of a switch SB5, the other end of the switch SB5 is connected with one end of a coil of a relay KA3, and the other end of the coil of the relay KA3 is connected with a neutral line N;
one end of a normally open contact SA2-2 in the diesel/electric conversion switch SA2 is connected with one end of a normally closed contact 1KA-2 of the relay 1KA, the other end of the normally open contact SA2-2 is connected with one end of a normally closed contact KA2-4 of the relay KA2, and the other end of the normally closed contact KA2-4 of the relay KA2 is connected with the other end of the normally closed contact 1KA-2 of the relay 1 KA;
one end of a normally open contact SA2-2 and the other end of a normally closed contact KA2-4 of a relay KA2 in the diesel/electric conversion switch SA2 are used for being connected with an input starting end of a diesel pump;
in the context of figures 1 and 2 of the drawings,
the automatic/manual change-over switch SA1 (SA 1-1, SA1-2 and SA 1-3) is in a manual state at present, and can be switched into an automatic state after SA1 is pressed;
the diesel/electric changeover switch SA2 (SA 2-1 and SA 2-2) is in a diesel pump state at present and is switched to an electric pump state after being pressed down;
the motor controller U1 adopts WJB +300/5ZT delta intelligent protection monitor of Shuanghua electrical apparatus Limited company;
the switches function:
SB1-1, stop switch under the manual control state;
SB1-2, stop switch under the automatic control state;
SB2, starting switch under manual control state;
SB5, another stop switch, may be located off-site, such as a monitoring room;
SB3, forcibly starting a switch to simulate the occurrence of fire;
SB4, electric pump start failure reset switch;
when the automatic/manual change-over switch SA1 is switched to the automatic position, the pump is automatically started to operate, and when the automatic/manual change-over switch is switched to the manual position, the pump is generally used for equipment maintenance;
the diesel/electric changeover switch SA2 can select an electric pump or a diesel pump as a main pump, the main pump fails to start, and the standby pump is immediately put into operation, so that the reliability of the spraying system is ensured;
the working principle of the control circuit is explained below by taking an electric pump as a main pump and a firewood pump as a standby pump;
firstly, a main switch QF is closed, a diesel/electric changeover switch SA2 selects the position of an electric pump, namely, the position is closed SA2-1, the position is closed SA2-2, and meanwhile, an automatic/manual changeover switch SA1 is switched to an automatic position, namely, the position is closed SA1-1, the position is opened SA1-2, and the position is closed SA 1-3; a coil of the relay KA1 is electrified- > a normally open contact KA1-1 of the relay KA1 is closed, and meanwhile, the other normally open contact KA1-2 is closed, when a fire occurs, a spray head is opened, a pressure switch P acts to be closed (a pump starting signal), the coil of the relay 1KA is electrified- > the normally open contact 1KA-1 of the relay 1KA is closed- > the coil of the relay KA3 is electrified, and the relay KA3 self-locking- > the normally open contact KA3 KA3-1 of the relay KA is closed- > a contactor KM3 coil is electrified- > a contactor KM3 normally open contact KM3-1 is closed- > the coil of the contactor KM1 is electrified- > the contactor KM1 normally open contact KM1-1 is closed and the self-locking KM1 coil- > the contactor KM1 main contact KM1-0, the contactor KM3 main contact KM3-0 is closed- >, starting according to a star connection method- > a motor controller U1 starts timing after monitoring a starting current in a circuit through a current transformer CT, a delay contact ST inside the motor controller U1 is closed after 8-10 seconds (which can be set), > a relay KA0 coil is electrified, a closed KA0-3 self-locking- > relay KA0 normally-closed contact KA0-1 is disconnected- > a contactor KM3 coil is not electrified, meanwhile, a relay KA0 normally-open contact KA0-2 is closed, a contactor KM2 coil is electrified, contactors KM2 and KM3 are disconnected through KM2-1 and KM3-2 interlocking- > a contactor KM3 main contact KM3-0, a contactor KM2 main contact KM2-0 is closed, a motor M is switched to a triangle connection method for operation through the star connection method, and the star and triangle starting of the motor is completed; then the electric pump provides the water in the water pool to a pipe network through a pipeline, and the whole spraying system works;
when the electric pump runs, the contactor KM2 normally-open contact KM2-2 is closed, and the buzzer HY2 gives an alarm, so that personnel in a monitoring room can know that a fire is sent, and the electric pump is automatically started;
under the automatic control state, if the electric pump fails to start, the principle of starting the automatic rotary diesel pump is as follows:
the motor is started, if the star-delta conversion is unsuccessful, the contactors KM2 and KM3 cannot be normally converted, namely, whether the contactor KM2 is electrified for conversion and attraction is detected after the motor M is started for 10 seconds;
after the pressure switch P is closed, because the normally open contact 1KA-1 of the relay 1KA is closed, the coil of the relay KA3 is electrified, and the normally open contact KA3-2 of the relay KA3 is also closed; SA1-3 is closed in the automatic state, and a timer KT is electrified for timing;
the timer KT can be set for timing for 1 minute, and after the motor M is started, if the KM2-3 normally closed contact is disconnected after the motor M is started successfully, the timer KT is powered off and stops working; if the star delta starting of the motor is unsuccessful after one minute, the normally open contact KT-1 of the electrified delay relay is closed- > the coil of the KA2 is electrified- > the normally open contact KA2 is closed and self-locked, the normally closed contact KA2-2 is opened- > the coil of the KA1 is electrified- > the normally open contact KA1 is opened-1-2 is disconnected- > the contactor KM1 and the KM3 are electrified- > the contactor KM1 and the KM3 main contacts KM1-0 and KM3-0, the motor M stops starting, the starting failure indicator lamp HY4 is lightened, the normally closed contact KA2-4 of the relay is disconnected, a power-off pulse is sent to the starting input end of the diesel pump, and the diesel pump automatically starts to run;
when the diesel pump runs, the diesel pump running output switch CK2 is closed, the relay 2KA coil is electrified, the relay 2KA normally open contact 2KA-1 is closed, and the buzzer HY3 gives an alarm, so that personnel in a monitoring room can know that a fire is sent, and the diesel pump is automatically started;
when the diesel pump is a main pump and in a fire disaster, the pressure switch P is closed, the relay 1KA coil is electrified, the normally closed contact 1KA-2 is disconnected, and a power-off pulse can be sent to the diesel pump starting input end to start the diesel pump;
when the diesel pump breaks down, diesel pump trouble output switch CK1 is closed, and the relay KC coil gets electric for normally open contact KC-1 is closed, under the closed condition of master switch QF, relay KA1 coil just can get electric, then the start-up of beginning charge pump, similar with above-mentioned charge pump start-up process, no longer give unnecessary details.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (3)
1. A spray pump activestandby electrical control circuit, characterized by includes:
the system comprises a main switch QF, contactors KM1, KM2, KM3, a current transformer CT, an automatic/manual change-over switch SA1, a diesel/electric change-over switch SA2, a motor controller U1, relays KA0, KA1, KA2, KA3, a timer KT, a pressure switch P, relays KC, 1KA and 2 KA;
one end of a main contact QF-0 of the main switch QF is connected with a three-phase live wire, the other end of the main contact QF-0 of the main switch QF is connected with one end of a main contact KM1-0 of a contactor KM1, and the other end of the main contact KM1-0 of the contactor KM1 is respectively connected with the ends of U1-1, V1-1 and W1-1 of the motor M through three wires; a current transformer CT is arranged on a line between a main contact KM1-0 of the contactor KM1 and the motor M, and is connected with a signal input end of a motor controller U1;
the U1-1 end of motor M connects with one end of the first contact in the contactor KM2 main contact KM2-0, the other end of the first contact in the contactor KM2 main contact KM2-0 connects with the W1-2 end of motor M;
the V1-1 end of the motor M is connected with one end of a second contact in the main contact KM2-0 of the contactor KM2, and the other end of the second contact in the main contact KM2-0 of the contactor KM2 is connected with the U1-2 end of the motor M;
the W1-1 end of the motor M is connected with one end of a third contact in a main contact KM2 KM2-0, and the other end of the third contact in a main contact KM2 KM2-0 is connected with the V1-2 end of the motor M;
one ends of three contacts in a main contact KM3-0 of a contactor KM3 are respectively connected with the W1-2 end, the U1-2 end and the V1-2 end of a motor M, and the other ends of the three contacts are connected;
a live wire is connected with one end of a fuse FU, the other end of the fuse FU is connected with a first node (1), the power supply end of a motor controller U1 and one end of a normally open contact KA1-2 of a relay KA1, the other end of the normally open contact KA1-2 of the relay KA1 is connected with one end of a normally closed contact KA2-1 of a relay KA2, the other end of the normally closed contact KA2-1 of the relay KA2 is connected with one end of a normally open contact SA1-1 and one end of a normally closed contact SA1-2 of an automatic/manual change-over switch SA1, and the other end of the normally open contact SA1-1 is connected with one; the other end of the normally closed contact SA1-2 is connected with one end of a normally closed contact SB1-1 in the switch SB1, the other end of the normally closed contact SB1-1 is connected with one end of a switch SB2 and one end of a normally open contact KM1-2 of a contactor KM1, the other end of the normally open contact KA3-1 of the relay KA3 is connected with the other end of the switch SB2, one end of a normally closed contact KA0-1 of a relay KA0, one end of a normally open contact KM1-1 of a contactor KM1 and one end of a normally open contact; the other end of the contactor KM1 normally open contact KM1-2 is connected with the other end of the contactor KM1 normally open contact KM1-1 and the other end of the contactor KM3 normally open contact KM3-1, one end of the relay KA0 normally open contact KA0-2, one end of a contactor KM1 coil, one end of a delay contact ST in a motor controller U1 and one end of a relay KA0 normally open contact KA0-3, and the other end of the delay contact ST is connected with the other end of the relay KA0 normally open contact KA0-3 and one end of a relay KA0 coil; the other end of the coil of the contactor KM1 and the other end of the coil of the relay KA0 are connected with one end of a protection switch K1 in a motor controller U1; the other end of the protection switch K1 is connected with a neutral line N;
the other end of the normally closed contact KA0-1 of the relay KA0 is connected with one end of a normally closed contact KM2 KM2-1, the other end of the normally closed contact KM2 KM2-1 is connected with one end of a coil of a contactor KM3, and the other end of the coil of the contactor KM3 is connected with a neutral wire N;
the other end of a normally open contact KA0-2 of the relay KA0 is connected with one end of a normally closed contact KM3 KM3-2, the other end of a normally closed contact KM3 KM3-2 is connected with one end of a coil of a contactor KM2, and the other end of the coil of the contactor KM2 is connected with a neutral wire N;
one end of the pressure switch P is connected with a direct-current voltage anode, the other end of the pressure switch P is connected with one end of a relay 1KA coil, and the other end of the relay 1KA coil is connected with a direct-current voltage cathode;
one end of a diesel pump fault output switch CK1 is connected with a direct-current voltage anode, the other end of the diesel pump fault output switch CK1 is connected with one end of a relay KC coil, the other end of the relay KC coil is connected with a direct-current voltage cathode, one end of a diesel pump operation output switch CK2 is connected with the direct-current voltage anode, the other end of the diesel pump operation output switch CK2 is connected with one end of a relay 2KA coil, and the other end of the relay 2KA coil is connected;
one end of the power indicator HY1 is connected with the first node (1), and the other end is connected with the neutral line N;
one end of a normally open contact KM2-2 of the contactor KM2 is connected with the first node (1), the other end of the normally open contact KM2-2 is connected with one end of a buzzer HY2, and the other end of the buzzer Y2 is connected with a neutral line N;
one end of a normally open contact 2KA-1 of the relay 2KA is connected with the first node (1), the other end of the normally open contact is connected with one end of a buzzer HY3, and the other end of the buzzer HY3 is connected with a neutral line N;
one end of an auxiliary normally open contact QF-1 of the main switch QF is connected with a first node (1), the other end of the auxiliary normally open contact QF-1 of the main switch QF is connected with one end of a normally open contact SA2-1 in a diesel/electric conversion switch SA2 and one end of a normally open contact KC-1 of a relay KC, the other end of the normally open contact SA2-1 and the other end of the normally open contact KC-1 in the diesel/electric conversion switch SA2 are connected with one end of a normally closed contact KA2-2 of a relay KA2, the other end of the normally closed contact KA2-2 of the relay KA 56 2 is connected with one end of a coil of;
one end of a normally open contact KA2-3 of the relay KA2 is connected with the first node (1), the other end of the normally open contact KA2-3 of the timer KT is connected with one end of a normally open contact KT-1 of an electrified delay relay, the other end of the normally open contact KT-1 of the electrified delay relay is connected with one end of a coil of the relay KA2 and one end of a start failure indicator HY4, and the other end of the start failure indicator HY4 and the other end of the coil of the relay KA2 are;
one end of a normally open contact KA1-1 of the relay KA1 is connected with the first node (1), the other end of the normally open contact KA3-2 of the relay KA3, one end of a normally open contact 1KA-1 of the relay 1KA and one end of a normally open contact KA3-3 of the relay KA3 are connected with the first node; the other end of the normally open contact KA3-2 of the relay KA3 is connected with the other end of the normally open contact KA2-3 of the relay KA2 and one end of the normally closed contact KM2 KM2-3 of the contactor KM2 KM2-3 is connected with one end of a reset switch SB4, the other end of the reset switch SB4 is connected with one end of a normally open contact SA1-3 in the automatic/manual change-over switch SA1, the other end of the normally open contact SA1-3 is connected with one end of a timer KT, and the other end of the timer KT is connected with a;
the other end of a normally open contact 1KA-1 of the relay 1KA and the other end of a normally open contact KA3-3 of the relay KA3 are connected with one end of a normally closed contact SB1-2 in a switch SB1, the other end of the normally closed contact SB1-2 is connected with one end of a switch SB5, the other end of the switch SB5 is connected with one end of a coil of a relay KA3, and the other end of the coil of the relay KA3 is connected with a neutral line N;
one end of a normally open contact SA2-2 in the diesel/electric conversion switch SA2 is connected with one end of a normally closed contact 1KA-2 of the relay 1KA, the other end of the normally open contact SA2-2 is connected with one end of a normally closed contact KA2-4 of the relay KA2, and the other end of the normally closed contact KA2-4 of the relay KA2 is connected with the other end of the normally closed contact 1KA-2 of the relay 1 KA;
one end of a normally open contact SA2-2 and the other end of a normally closed contact KA2-4 of a relay KA2 in the diesel/electric conversion switch SA2 are used for being connected with an input starting end of a diesel pump.
2. The master-slave electrical control circuit for a spray pump according to claim 1,
the contactor also comprises an indicator light HR, and the two ends of the indicator light HR are respectively connected with the two ends of the coil of the contactor KM 2.
3. The master-slave electrical control circuit for a spray pump according to claim 1,
the relay also comprises a switch SB3, one end of the switch SB3 is connected with the positive pole of the direct-current voltage, and the other end is connected with one end of the coil of the relay 1 KA.
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| CN201920808195.0U CN209925183U (en) | 2019-05-31 | 2019-05-31 | Main/standby electrical control circuit of spray pump |
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| CN201920808195.0U CN209925183U (en) | 2019-05-31 | 2019-05-31 | Main/standby electrical control circuit of spray pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107491A (en) * | 2019-05-31 | 2019-08-09 | 费森尤斯卡比华瑞制药有限公司 | The active and standby electric control circuit of spray pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107491A (en) * | 2019-05-31 | 2019-08-09 | 费森尤斯卡比华瑞制药有限公司 | The active and standby electric control circuit of spray pump |
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