CN2466233Y

CN2466233Y - Integral protection automatic water supply controller

Info

Publication number: CN2466233Y
Application number: CN 01207074
Authority: CN
Inventors: 李有智
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-23
Filing date: 2001-02-23
Publication date: 2001-12-19
Anticipated expiration: 2011-02-23

Abstract

The utility model discloses a water supplier, particularly a controller for a water supplier. An integral protection automatic water supply controller comprises an automatic water supply control circuit, an overcurrent protection circuit and a water level sensor, wherein the automatic water supply control circuit is composed of a time-base integrated package IC2, a resistor R2, a transistor BG1, a capacitor C3 and a relay J1; the overcurrent protection circuit is composed of a current sample circuit, a double time-base integrated package IC3, a capacitor C11 and a relay J2. The utility model also has a phase loss protection circuit which is composed of induction coils L1, L2, L3, three diodes, three capacitors, and transistors BG2, BG3, BG4. The utility model has the advantages of reasonable structure and high safety; the utility model not only can realize the automatic water supply, but also can integrally protect the overcurrent and phase loss of a motor.

Description

The integrated protection automatic water-feeding controller

The utility model relates to the controller of a kind of water tower or high level cistern watering machine, particularly a kind of watering machine.

The last water of water tower or high level cistern is mainly supplied with by water pump; the automaton of last water process is existing the installation on large-scale water tower; but its complex structure; the cost height is not suitable for some midget plants, and the easy water-feeding controller of Shi Yonging mainly is made up of relay and level sensor in the market; though it can realize automatic loading water; but it is too simple, and safety can not realize integrated protection to the overcurrent and the phase shortage of pump motor in addition inadequately.

The purpose of this utility model will provide a kind of structure simple and direct, with low cost, safe and reliable exactly, can realize the integrated protection automatic water-feeding controller to pump motor overcurrent and open-phase protection simultaneously.

The utility model adopts technical scheme as described below for achieving the above object: the integrated protection automatic water-feeding controller comprises a transformer B, current rectifying and wave filtering circuit, automatic loading water control circuit and a current foldback circuit and a level sensor.Current rectifying and wave filtering circuit is made up of rectifier bridge, three-terminal voltage-stabilizing integrated package, filter capacitor; The automatic loading water control circuit is by time base integrated package IC2, resistance R 2, triode BG1, capacitor C 3 and relay J 1 are formed, the output VCC of one termination three-terminal voltage-stabilizing integrated package of relay J 1,3 pin of base integrated package IC2 during another termination, 8 pin and 4 pin of time base integrated package IC2 meet power supply VCC, 1 pin ground connection, 6 pin and 2 pin short circuits, when resistance R 2 is connected between 6 pin and power supply VCC of base integrated package IC2, the grounded emitter of triode BG1,2 pin of base integrated package IC2 when its colelctor electrode connects, its base stage is the signal receiving end b of level sensor, a constant open contact of relay J 1 is connected in the current supply circuit of water water pump, level sensor is made up of three metal electrodes, a is a water level upper limit electrode, and c is a water level lower limit electrode, and b is the water level signal receiving terminal, the a electrode meets power supply VCC, is connected to a constant close contact J1-1 of relay J 1 between a electrode and the c electrode.The automatic loading water control circuit is work like this: when the water level in the water tank is lower than water level lower limit electrode c, water level signal receiving terminal b loses voltage, triode BG1 ends, 2 pin of time base integrated package IC2 become high level, its 3 pin becomes low level, relay J 1 conducting, water pump must be established the beginning by cable and supply water, when water level was elevated to water level upper limit electrode a, the electrode a that is connected on the power supply VCC gave water level signal receiving end b power supply through water, triode BG1 conducting, 2 pin of time base integrated package IC2 become low level, its 3 pin becomes high level, and relay J 1 is ended, and the water pump dead electricity stops to supply water.

Current foldback circuit is made up of current sampling circuit, dual time base ic chip 3, capacitor C 11, relay J 2; current sampling circuit is made up of induction coil L4, diode D9, capacitor C 8, adjustable potentiometer W1 and resistance R 7; the tap of adjustable potentiometer W1 is connected to 8 pin of dual time base ic chip 3 through resistance R 8, R9; 9 pin of dual time base ic chip 3 are connected to 2 pin and 6 pin of IC3 through resistance R 10 and diode D10; one end ground connection of relay J 2,5 pin of another termination IC3.A constant close contact of relay J 2 is connected in the current supply circuit of pump motor.When no matter what situation pump motor supply current occurs when excessive, the voltage increases of coil L4 induction, voltage in the adjustable potentiometer W1 tap also raises, 8 pin of dual time base ic chip 3 become high level, and its 9 pin is a low level, and this low level is given low level of 2 pin of IC3 again through resistance R 10 and diode D10, the 5 pin output high level of IC3, relay J 2 charged adhesives, its constant close contact is opened, and pump motor has a power failure.

It also has an open-phase protection circuit; this circuit is made up of induction coil L1, L2, L3, diode D6, D7, D8, capacitor C 5, C6, C7, triode BG2, BG3, BG4 and resistance R 3, R4, R5, R6; triode BG2, BG3, the BG4 connection that is one another in series; the colelctor electrode of triode BG4 meets power supply VCC; the emitter stage one tunnel of triode BG2 is through resistance R 3 ground connection, and another road is connected to 2 pin and 6 pin of dual time base ic chip 3.Do not have electricity phase shortage to occur mutually when the power supply of three phase electric machine is arbitrary, triode BG2, the BG3 of series connection, the BG4 road of continuing, low level of 2 pin that resistance R 3 is given IC3, the 5 pin output high level of IC3, relay J 2 charged adhesives, its constant close contact is opened, and pump motor has a power failure.

Adopt the integrated protection automatic water-feeding controller of said structure rational in infrastructure, safe and reliable, except realizing automatic loading water, can also carry out integrated protection to the overcurrent and the phase shortage of motor.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is the structure and the circuit connection diagram of level sensor.

With reference to Fig. 1, Fig. 2.The integrated protection automatic water-feeding controller comprises transformer B, current rectifying and wave filtering circuit, automatic loading water control circuit, current foldback circuit and level sensor.Current rectifying and wave filtering circuit is made up of rectifier bridge, three-terminal voltage-stabilizing ic chip 1, filter capacitor C1, C2, and the output of three-terminal voltage-stabilizing ic chip 1 is dc power anode VCC; The automatic loading water control circuit is by time base integrated package IC2, resistance R 2, triode BG1, capacitor C 3 and relay J 1 are formed, the output VCC of one termination three-terminal voltage-stabilizing ic chip 1 of relay J 1,3 pin of base integrated package IC2 during another termination, 8 pin and 4 pin of time base integrated package IC2 meet power supply VCC, 1 pin ground connection, 6 pin and 2 pin short circuits, when resistance R 2 is connected between 6 pin and power supply VCC of base integrated package IC2, the grounded emitter of triode BG1,2 pin of base integrated package IC2 when its colelctor electrode connects, its base stage is the signal receiving end b of level sensor, and a constant open contact of relay J 1 is connected in the current supply circuit of water water pump.Level sensor is made up of three metal electrodes, and a is a water level upper limit electrode, and c is a water level lower limit electrode, b is the water level signal receiving terminal, the a electrode meets power supply VCC, is connected to a constant close contact J1-1 of relay J 1 between a electrode and the c electrode, and capacitor C 4 is connected between 8 pin and ground wire of IC2.Automatic loading water control is achieved in that when the water level in the water tank is lower than water level lower limit electrode c, water level signal receiving terminal b loses voltage, triode BG1 ends, 2 pin of time base integrated package IC2 become high level, its 3 pin becomes low level, relay J 1 conducting, water pump must be established the beginning by cable and supply water, when water level was elevated to water level upper limit electrode a, the electrode a that is connected on the power supply VCC gave water level signal receiving end b power supply through water, triode BG1 conducting, 2 pin of time base integrated package IC2 become low level, its 3 pin becomes high level, and relay J 1 is ended, and the water pump dead electricity stops to supply water.

Current foldback circuit is made up of current sampling circuit, dual time base ic chip 3, capacitor C 11, relay J 2; current sampling circuit is made up of induction coil L4, diode D9, capacitor C 8, adjustable potentiometer W1 and resistance R 7; the tap of adjustable potentiometer W1 is connected to 8 pin of dual time base ic chip 3 through resistance R 8, R9; 9 pin of dual time base ic chip 3 are connected to 2 pin and 6 pin of IC3 through resistance R 10 and diode D10; one end ground connection of relay J 2,5 pin of another termination IC3.A constant close contact of relay J 2 is connected in the current supply circuit of pump motor.When pump motor water inlet, overload, short circuit etc. occur and causes the fault of overcurrent, the voltage increases of coil L4 induction, voltage in the adjustable potentiometer W1 tap also raises, 8 pin of dual time base ic chip 3 become high level, and its 9 pin is a low level, and this low level is given low level of 2 pin of IC3 again through resistance R 10 and diode D10, the 5 pin output high level of IC3, relay J 2 charged adhesives, its constant close contact is opened, and pump motor has a power failure.

Drive the situation that water pump supplies water for adapting to three phase electric machine; the utility model also has an open-phase protection circuit; this circuit is made up of induction coil L1, L2, L3, diode D6, D7, D8, capacitor C 5, C6, C7, triode BG2, BG3, BG4 and resistance R 3, R4, R5, R6; triode BG2, BG3, the BG4 connection that is one another in series; the colelctor electrode of triode BG4 meets power supply VCC; the emitter stage one tunnel of triode BG2 is through resistance R 3 ground connection, and another road is connected to 2 pin and 6 pin of dual time base ic chip 3.Do not have electricity phase shortage to occur mutually when the power supply of three phase electric machine is arbitrary, triode BG2, the BG3 of series connection, the BG4 road of continuing, low level of 2 pin that resistance R 3 is given IC2, the 5 pin output high level of IC2, relay J 2 charged adhesives, its constant close contact is opened, and pump motor has a power failure.

Claims

1; a kind of integrated protection automatic water-feeding controller; it comprises transformer B; current rectifying and wave filtering circuit; relay J 1 and level sensor; current rectifying and wave filtering circuit is by rectifier bridge; three-terminal voltage-stabilizing ic chip 1; filter capacitor C1; C2 forms; it is characterized in that: it has an automatic loading water control circuit and a current foldback circuit; the automatic loading water control circuit is by time base integrated package IC2; resistance R 2; triode BG1; capacitor C 3 and relay J 1 are formed; the output VCC of one termination three-terminal voltage-stabilizing ic chip 1 of relay J 1; 3 pin of base integrated package IC2 during another termination; 8 pin and 4 pin of time base integrated package IC2 meet power supply VCC; 1 pin ground connection; 6 pin and 2 pin short circuits; when resistance R 2 is connected between 6 pin and power supply VCC of base integrated package IC2; the grounded emitter of triode BG1; 2 pin of base integrated package IC2 when its colelctor electrode connects; its base stage is the signal receiving end b of level sensor; a constant open contact of relay J 1 is connected in the current supply circuit of water water pump; level sensor is made up of three metal electrodes; a is a water level upper limit electrode; c is a water level lower limit electrode; b water level signal receiving terminal; the a electrode meets power supply VCC; be connected to a constant close contact J1-1 of relay J 1 between a electrode and the c electrode; current foldback circuit is by current sampling circuit; dual time base ic chip 3; capacitor C 11; relay J 2 is formed; current sampling circuit is by induction coil L4; diode D9; capacitor C 8; adjustable potentiometer W1 and resistance R 7 are formed; the tap of adjustable potentiometer W1 is through resistance R 8; R9 is connected to 8 pin of dual time base ic chip 3; 9 pin of dual time base ic chip 3 are connected to 2 pin and 6 pin of IC3 through resistance R 10 and diode D10; one end ground connection of relay J 2,5 pin of another termination IC3.

2, integrated protection automatic water-feeding controller according to claim 1; it is characterized in that: it also has an open-phase protection circuit; this circuit is made up of induction coil L1, L2, L3, diode D6, D7, D8, capacitor C 5, C6, C7, triode BG2, BG3, BG4 and resistance R 3, R4, R5, R6; triode BG2, BG3, the BG4 connection that is one another in series; the colelctor electrode of triode BG4 meets power supply VCC; the emitter stage one tunnel of triode BG2 is through resistance R 3 ground connection, and another road is connected to 2 pin and 6 pin of dual time base ic chip 3.