CN217087497U - Weak current control forceful electric power break-make circuit - Google Patents
Weak current control forceful electric power break-make circuit Download PDFInfo
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- CN217087497U CN217087497U CN202220730243.0U CN202220730243U CN217087497U CN 217087497 U CN217087497 U CN 217087497U CN 202220730243 U CN202220730243 U CN 202220730243U CN 217087497 U CN217087497 U CN 217087497U
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Abstract
The utility model discloses a light current control forceful electric power on-off circuit relates to the water pump field, and this light current control forceful electric power on-off circuit includes: the power supply module is used for supplying alternating current; the voltage reduction rectification filtering module is used for converting alternating current into direct current; the voltage stabilizing module is used for supplying 12V direct current; the low-voltage protection module is used for disconnecting a loop between the voltage stabilizing module and the relay working module when the input voltage is lower than a lower limit threshold; the control signal module is used for outputting a signal to the relay working module; the relay working module is used for controlling the contactor working module to work when the voltage stabilizing module supplies power and the control signal module inputs signals; compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a switching on of contactor under the low-voltage control high voltage, and then switching on of the high-power water pump of control, solved the problem that high-power water pump opened and close and need the plug, it is more convenient during the use.
Description
Technical Field
The utility model relates to a water pump field specifically is a light current control forceful electric power on-off circuit.
Background
The working principle of the alternating current contactor is that the contact is connected and disconnected by matching electromagnetic force with the elastic force of a spring. The alternating current contactor has two working states, namely a power-off state (release state) and a power-on state (action state). When the attraction coil is electrified, the static iron core generates electromagnetic attraction force, the armature is attracted, and the connecting rod connected with the armature drives the contact to act, so that the normally closed contact breaking contactor is in an electrified state; when the attraction coil is powered off, the electromagnetic attraction force disappears, the armature is reopened, the normally open contact is closed, the normally open contact is released under the action of the position spring, all the contacts reset accordingly, and the contactor is in a power-off state.
The high-power water pump has large working voltage, the on-off is not directly controlled well, the plugging plug is often adopted to cut off the power or switch on the power, and if the high-power water pump is controlled by the alternating current contactor, the on-off of the high-power water pump is controlled by the on-off of the alternating current contactor, so that the high-power water pump is more convenient and safer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a weak current control forceful electric power on-off circuit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a weak current control strong current on-off circuit, comprising:
the power supply module is used for supplying alternating current;
the voltage reduction rectification filtering module is used for converting alternating current into direct current;
the voltage stabilizing module is used for supplying 12V direct current;
the low-voltage protection module is used for disconnecting a loop between the voltage stabilizing module and the relay working module when the input voltage is lower than a lower limit threshold;
the control signal module is used for outputting a signal to the relay working module;
the relay working module is used for controlling the contactor working module to work when the voltage stabilizing module supplies power and the control signal module inputs signals;
the contactor working module is used for controlling the water pump to work when the contactor is electrified and conducted;
the power supply module is connected with the voltage reduction rectification filter module and the contactor working module, the voltage reduction rectification filter module is connected with the voltage stabilization module, the voltage stabilization module is connected with the low-voltage protection module and the relay working module, the control signal module is connected with the relay working module, and the relay working module is connected with the contactor working module.
As a further aspect of the present invention: the power supply module comprises a live wire L1, a live wire L2, a live wire L3, a zero wire N and a ground wire E.
As a further aspect of the present invention: the voltage reduction rectification filtering module comprises a transformer W, a rectifier T, a capacitor C1, a capacitor C2 and an inductor L1, wherein one end of the input end of the transformer W is connected with a live wire L3, the other end of the input end of the transformer W is connected with a zero line N, one end of the output end of the transformer W is connected with the first end of the rectifier T, the other end of the output end of the transformer W is connected with the second end of the rectifier T, the third end of the rectifier T is connected with a capacitor C1 and an inductor L1, the fourth end of the rectifier T is connected with the other end of the capacitor C1 and a capacitor C2, the other end of the capacitor C2 is connected with the other end of the inductor L1, and the voltage stabilizing module.
As a further aspect of the present invention: the low-voltage protection module comprises a diode D1, a potentiometer RP1, a resistor R2, a diode D2, a triode V1, a triode V2 and a resistor R3, wherein the negative electrode of the diode D1 is connected with the positive electrode of the diode D2, the resistor R3 and the voltage stabilizing module, the positive electrode of the diode D1 is connected with a potentiometer RP1, the other end of the potentiometer RP1 is connected with the base electrode of the triode V1 and the resistor R2, the other end of the resistor R2 is connected with the negative electrode of the circuit, the collector electrode of the triode V1 is connected with the negative electrode of the diode D2, the emitter electrode of the triode V1 is connected with the base electrode of the triode V2, the collector electrode of the triode V2 is connected with the other end of the resistor R3, and the emitter electrode of the triode V2 is connected with the relay working module.
As a further aspect of the present invention: the relay working module comprises a switch S2, a relay J2, a diode D3, a relay J1, a diode D4 and a triode V3, one end of the switch S2 is connected with a voltage stabilizing module, the other end of the switch S2 is connected with a collector of the triode V3, a base of the triode V3 is connected with a control signal module, an emitter of the triode V3 is connected with a relay J1 and a cathode of the diode D4, the other end of the relay J1 is connected with an anode of a diode D4 and a cathode of a circuit, one end of the relay J2 is connected with a cathode of the diode D3 and a low-voltage protection module, and the anode of the diode D3 is connected with the other end of the relay J2 and the cathode of the circuit.
As a further aspect of the present invention: the contactor work module comprises a contactor X, a switch S1A, a switch S1B, a switch S1C, a live wire L1 is connected to one end of the switch S1A, a live wire L2 is connected to one end of the switch SBA, a live wire L3 is connected to one end of the switch S1C, the other end of the switch S1A is connected to the first end of the contactor X, the other end of the switch S1B is connected to the second end of the contactor X, the other end of the switch S1C is connected to the third end of the contactor X, a zero line N is connected to the third end of the contactor X, and the ground wire is connected to the fifth end of the contactor X.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a switching on of contactor under the low-voltage control high voltage, and then control switching on of high-power water pump, solved high-power water pump and opened the problem that closes the needs plug, it is more convenient during the use.
Drawings
Fig. 1 is a schematic diagram of a weak current controlled strong current on-off circuit.
Fig. 2 is a circuit diagram of a weak current controlled strong current on-off circuit.
Fig. 3 is an internal structural view of the rectifier T.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a weak current controlled strong current on/off circuit includes:
the power supply module is used for supplying alternating current;
the voltage reduction rectification filtering module is used for converting alternating current into direct current;
the voltage stabilizing module is used for supplying 12V direct current;
the low-voltage protection module is used for disconnecting a loop between the voltage stabilizing module and the relay working module when the input voltage is lower than a lower limit threshold;
the control signal module is used for outputting a signal to the relay working module;
the relay working module is used for controlling the contactor working module to work when the voltage stabilizing module supplies power and the control signal module inputs signals;
the contactor working module is used for controlling the water pump to work when the contactor is electrified and conducted;
the power supply module is connected with the voltage reduction rectification filter module and the contactor working module, the voltage reduction rectification filter module is connected with the voltage stabilization module, the voltage stabilization module is connected with the low-voltage protection module and the relay working module, the control signal module is connected with the relay working module, and the relay working module is connected with the contactor working module.
In this embodiment: referring to fig. 2, the power supply module includes a live line L1, a live line L2, a live line L3, a neutral line N, and a ground line E.
380V alternating current is supplied to the contactor working module through a live wire L1, a live wire L2, a live wire L3, a zero line N and a ground wire E, and 220V alternating current is supplied to the voltage reduction rectification filter module through a live wire L3 and a zero line N.
In this embodiment: referring to fig. 2 and 3, the buck rectification filter module includes a transformer W, a rectifier T, a capacitor C1, a capacitor C2, and an inductor L1, one end of an input end of the transformer W is connected to a live line L3, the other end of the input end of the transformer W is connected to a zero line N, one end of an output end of the transformer W is connected to a first end of the rectifier T, the other end of the output end of the transformer W is connected to a second end of the rectifier T, a third end of the rectifier T is connected to the capacitor C1 and the inductor L1, a fourth end of the rectifier T is connected to the other end of the capacitor C1 and the capacitor C2, and the other end of the capacitor C2 is connected to the other end of the inductor L1 and the voltage stabilizing module.
The transformer W converts the 220V alternating current into the low-voltage alternating current, the rectifier T is a bridge rectifier circuit composed of four rectifier diodes, as shown in fig. 3, for converting the alternating current into the direct current, and the capacitor C1, the inductor L1 and the capacitor C2 constitute a filter circuit for performing filtering processing on the direct current.
The voltage stabilizer module comprises a voltage stabilizer U1 and a resistor R1, wherein the model of the voltage stabilizer U1 is 7812, and the voltage stabilizer module converts input voltage into fixed output 12V direct current.
In this embodiment: referring to fig. 2, the low voltage protection module includes a diode D1, a potentiometer RP1, a resistor R2, a diode D2, a transistor V1, a transistor V2, and a resistor R3, a negative electrode of the diode D1 is connected to an anode of the diode D2, a resistor R3, and a voltage stabilizing module, an anode of the diode D1 is connected to the potentiometer RP1, another end of the potentiometer RP1 is connected to a base of the transistor V1, a resistor R2, another end of the resistor R2 is connected to a negative electrode of the circuit, a collector of the transistor V1 is connected to a negative electrode of the diode D2, an emitter of the transistor V1 is connected to a base of the transistor V2, a collector of the transistor V2 is connected to another end of the resistor R3, and an emitter of the transistor V2 is connected to the relay working module.
When the input voltage is 12V, the voltage stabilizing diode D1 is conducted, the triode V1 is electrified and conducted, and the triode V2 is electrified and conducted to supply power for the relay working module; when the input voltage is less than 12V, the voltage stabilizing diode D1 is not conducted, the triode V1 and the triode V2 are cut off, and no voltage is output to the relay working module.
In this embodiment: referring to fig. 2, the relay working module includes a switch S2, a relay J2, a diode D3, a relay J1, a diode D4, and a transistor V3, one end of the switch S2 is connected to the voltage stabilizing module, the other end of the switch S2 is connected to a collector of the transistor V3, a base of the transistor V3 is connected to the control signal module, an emitter of the transistor V3 is connected to the cathodes of the relay J1 and the diode D4, the other end of the relay J1 is connected to an anode and a circuit cathode of the diode D4, one end of the relay J2 is connected to the cathode and a low voltage protection module of the diode D3, and the anode of the diode D3 is connected to the other end and the circuit cathode of the relay J2.
When the low-voltage protection module inputs voltage, the relay J2 is electrified to work, and the switch S2 is controlled to be closed, so that the voltage stabilizing module supplies power to the relay working module; at this time, when the signal module is controlled to input a signal (the signal may be an output signal of the single chip microcomputer, or a signal input by closing the switch, etc.), the triode V3 is turned on to supply power to the relay J1, so that the switch S1A, the switch S1B, and the switch S1C are closed. When the low-voltage protection module does not input voltage, the relay J2 does not work, the switch S2 is disconnected, the condition that the switch S1A, the switch S1B and the switch S1C are closed due to the fact that the low-voltage driving relay J1 is suspected, the working condition of the contactor X is suspected, and the working condition of the high-power water pump is suspected.
In this embodiment: referring to fig. 2, the contactor working module includes a contactor X, a switch S1A, a switch S1B, and a switch S1C, one end of the switch S1A is connected to a live line L1, one end of the switch SBA is connected to a live line L2, one end of the switch S1C is connected to a live line L3, a first end of the contactor X is connected to the other end of the switch S1A, a second end of the contactor X is connected to the other end of the switch S1B, a third end of the contactor X is connected to the other end of the switch S1C, a third end of the contactor X is connected to a neutral line N, and a fifth end of the contactor X is connected to a ground line.
When the switch S1A, the switch S1B and the switch S1C are closed, 380V alternating current is input to the contactor X, and then the contactor X works to further control the high-power water pump to work, so that the control of the high-power water pump is completed by controlling the contactor. A water pump frequency converter can be installed on the water pump, and sensor-free constant-pressure water supply can be achieved.
The utility model discloses a theory of operation is: the power supply module supplies alternating current, the voltage reduction rectification filter module converts the alternating current into direct current, the voltage stabilization module supplies 12V direct current, when the input voltage of the low-voltage protection module is lower than a lower limit threshold value, a loop between the voltage stabilization module and the relay working module is disconnected, the relay working module is provided with a control signal module output signal, the relay working module controls the work of the contactor working module when the voltage stabilization module supplies power and the control signal module inputs signals, and the water pump is controlled to work when the contactor working module is powered on and switched on.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A weak current control strong current on-off circuit is characterized in that:
this weak current control forceful electric power break-make circuit includes:
the power supply module is used for supplying alternating current;
the voltage reduction rectification filtering module is used for converting alternating current into direct current;
the voltage stabilizing module is used for supplying 12V direct current;
the low-voltage protection module is used for disconnecting a loop between the voltage stabilizing module and the relay working module when the input voltage is lower than a lower limit threshold;
the control signal module is used for outputting a signal to the relay working module;
the relay working module is used for controlling the contactor working module to work when the voltage stabilizing module supplies power and the control signal module inputs signals;
the contactor working module is used for controlling the water pump to work when the contactor is electrified and conducted;
the power supply module is connected with the voltage reduction rectification filter module and the contactor working module, the voltage reduction rectification filter module is connected with the voltage stabilization module, the voltage stabilization module is connected with the low-voltage protection module and the relay working module, the control signal module is connected with the relay working module, and the relay working module is connected with the contactor working module.
2. The weak current control strong current on-off circuit as claimed in claim 1, wherein the power supply module comprises a live line L1, a live line L2, a live line L3, a neutral line N, and a ground line E.
3. The weak current control strong current on-off circuit as claimed in claim 2, wherein the step-down rectification filter module comprises a transformer W, a rectifier T, a capacitor C1, a capacitor C2 and an inductor L1, one end of the input end of the transformer W is connected to the live line L3, the other end of the input end of the transformer W is connected to the neutral line N, one end of the output end of the transformer W is connected to the first end of the rectifier T, the other end of the output end of the transformer W is connected to the second end of the rectifier T, the third end of the rectifier T is connected to the capacitor C1 and the inductor L1, the fourth end of the rectifier T is connected to the other end of the capacitor C1 and the capacitor C2, and the other end of the capacitor C2 is connected to the other end of the inductor L1 and the voltage stabilizing module.
4. The weak current control strong current on-off circuit as claimed in claim 1, wherein the low voltage protection module comprises a diode D1, a potentiometer RP1, a resistor R2, a diode D2, a transistor V1, a transistor V2 and a resistor R3, wherein a cathode of the diode D1 is connected with an anode of the diode D2, the resistor R3 and the voltage stabilizing module, an anode of the diode D1 is connected with the potentiometer RP1, the other end of the potentiometer RP1 is connected with a base of the transistor V1 and the resistor R2, the other end of the resistor R2 is connected with a cathode of the circuit, a collector of the transistor V1 is connected with a cathode of the diode D2, an emitter of the transistor V1 is connected with a base of the transistor V2, a collector of the transistor V2 is connected with the other end of the resistor R3, and an emitter of the transistor V2 is connected with the relay working module.
5. A weak current control strong current on-off circuit as claimed in claim 1, wherein the relay operation module includes a switch S2, a relay J2, a diode D3, a relay J1, a diode D4, and a transistor V3, one end of the switch S2 is connected to the voltage stabilizing module, the other end of the switch S2 is connected to the collector of a transistor V3, the base of a transistor V3 is connected to the control signal module, the emitter of a transistor V3 is connected to the cathodes of a relay J1 and a diode D4, the other end of the relay J1 is connected to the anode of a diode D4 and the cathode of the circuit, one end of the relay J2 is connected to the cathode of a diode D3 and the low voltage protection module, and the anode of a diode D3 is connected to the cathode of a relay J2 and the cathode of the circuit.
6. The weak current control strong current on-off circuit according to claim 2, wherein the contactor operation module comprises a contactor X, a switch S1A, a switch S1B and a switch S1C, one end of the switch S1A is connected with a live line L1, one end of the switch SBA is connected with a live line L2, one end of the switch S1C is connected with a live line L3, a first end of the contactor X is connected with the other end of the switch S1A, a second end of the contactor X is connected with the other end of the switch S1B, a third end of the contactor X is connected with the other end of the switch S1C, a third end of the contactor X is connected with a neutral line N, and a fifth end of the contactor X is connected with a ground line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220730243.0U CN217087497U (en) | 2022-03-30 | 2022-03-30 | Weak current control forceful electric power break-make circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220730243.0U CN217087497U (en) | 2022-03-30 | 2022-03-30 | Weak current control forceful electric power break-make circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217087497U true CN217087497U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220730243.0U Active CN217087497U (en) | 2022-03-30 | 2022-03-30 | Weak current control forceful electric power break-make circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217087497U (en) |
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2022
- 2022-03-30 CN CN202220730243.0U patent/CN217087497U/en active Active
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