CN2138344Y - Non-time-delay electronic noiseless operation energy saver - Google Patents

Abstract

The utility model discloses an electricity economizer which is connected between an alternating current contactor coil and a control circuit and is used to cause the alternating current contactor to run soundlessly and cause the power cut to release quickly. The essential technology of the utility model is that the high-voltage DC power supply which is composed of a unidirectional controlled silicon and a control triggering circuit and is conducted instantly, and the low-voltage DC power supply which is controlled by the contact point of a relay J are connected in parallel to supply the power. A current limiting protection resistor is connected in the high-voltage loop circuit. The utility model overcomes the defects of poor stability, easy burning of the contactor coil, extended release of the power cut, etc., which are exist in the existing electronic economizer with the soundless run. The utility model has the advantages of stability and reliability, automatic protection when overloaded, rapid release of the contactor, etc.

Description

Non-time-delay electronic noiseless operation energy saver

The utility model discloses a kind of made ac contactor silent operation between ac contactor coil and the control loop and device that the A.C. contactor dead electricity is discharged of being connected to, belong to technical field of relay protection.

Extensive use along with modern electronic technology, the structural form of previous components and parts and A.C. contactor control loop overlap joint has been eliminated in the technological transformation of ac contactor silent operation, but adopted economizer independently between an incoming transport contactor coil and the control loop, can simplify installation like this, be convenient to maintenance, also help applying of this technology.The subject matter that present this energy-saving appliance exists is to produce Control Failure, device nothing overload insurance function itself, easy fault of burning ac contactor coil when scope range of the fluctuation of voltage is big, A.C. contactor produces the delay outage after installing energy-saving appliance additional, can make and get an electric shock, touch when leaking electricity electric leakage protector and be difficult to make A.C. contactor to be cut off the electricity supply rapidly, thereby might make the person and equipment cause more serious injury.

Invention task of the present utility model provides the no time delay electronics Noiseless running and energy saving device that is used for the A.C. contactor control coil that a kind of voltage adaptation scope nothing wide, that overload safety device is arranged postpones the outage disadvantage.

Figure of description is an electrical schematic diagram of the present utility model.

Technical essential of the present utility model shows as:

(1) adopts the high-voltage DC power supply of the instantaneous trigger conducting that an one-way SCR and control triggering electric circuit constitute and one by the low pressure time-delay direct current power source supplying power parallel operation that power transformer and full wave bridge rectifier and relay overlap joint constitute, solved influence that voltage fluctuation causes control and the defective that postpones outage.

(2) in the high voltage direct current resource loop series connection-current-limiting resistance as safeties, when overload takes place when resistance burnt rapidly, cutoff high DC power supply protection ac contactor coil.

(3) design the control triggering electric circuit that a differential circuit combines with integrating circuit and produced a stable trigger impulse control silicon controlled angle of flow.

Following according to Figure of description, introduce basic comprising of the present utility model and circuit theory thereof.

Among the figure, A, B are the binding posts that links the mains supply line, and C, D are for linking the binding post of A.C. contactor, and B is a three-winding transformer, and ui is elementary, u ₀₁For A.C. contactor keeps AC power, through rectifier bridge Q ₁After make A.C. contactor sticking DC power supply, u ₀₂Q ₂C ₅Constitute the DC power supply of relay.

Unidirectional controllable silicon S CR and corresponding startup thereof, protective circuit constitute contactless electronic beam switch.

R ₁R ₂For forming the dropping resistor that triggers power supply, diode D ₁～D ₄Constitute bridge rectifier, it and DW ₂, R ₇, C ₃Common formation D.C. regulated power supply.C ₁R ₅Constitute differential circuit, it produces pulse through diode D ₅Trigger controllable silicon.As can be seen, this bridge-type D.C. regulated power supply passes through capacitor C than little of in the past various half-wave DC power supply ripple coefficients more ₁After leakage current just minimum, again through diode D ₅After to be added to the leakage current of controllable silicon trigger electrode almost nil, no matter trigger electrode obtains when high voltage, low-voltage has only a starting impulse electric current, widened the voltage adaptation scope of energy-saving appliance so greatly, and the components and parts value is not strict, can commercially produce.

BG ₁DW ₁R ₄R ₆C ₄Constitute the integration inverter, after energy-saving appliance send electricity, C ₂Begin charging, BG ₁End, the differentiator operate as normal is worked as C ₂Be charged to DW ₁And BG ₁BE knot conducting voltage the time BG ₁Saturated, C ₁Pass through BG ₁R ₅Discharge, forced-triggered is ended, and the silicon controlled ON time is decided by C as can be seen ₁Charging interval.When supply voltage was high, this time reduced, and when supply voltage was low, this time increased, thereby makes silicon controlled conducting electric current constant substantially.The effect of integrator also has, after a conducting of controllable silicon since its trigger electrode by BG ₁Any unnecessary pulse can not trigger controllable silicon in the approximate short circuit current.

C ₄R ₃Be controllable silicon resistance capaciting absorpting circuit, R ₉Be insurance resistance, burn out ac contactor coil in case SCR damages the big direct current that causes.

The use of relay J be realize no time delay, after energy-saving appliance powers up, relay also electric adhesive, after energy-saving appliance cut off the power supply, relay electric-loss was opened, A.C. contactor does not have continuous current circuit and loss of excitation is opened.Power supply outage is a pull up time with the time difference that A.C. contactor is opened, and is should the time difference when using miniature relay minimum, can ignore.Certainly, also can replace relay, also can do and use a relay together, become electric leakage security personnel energy-saving appliance with electric leakage protector by other gate-controlled switch.

MY is a piezo-resistance in the circuit, and it is to absorb A.C. contactor outage back and the high-voltage pulse that forms.

In sum, a kind of no time delay electronics Noiseless running and energy saving device, comprise unidirectional controllable silicon S CR be main devices be the half-wave thyristor rectifier of coupled in series with ac contactor coil, it is characterized in that by crystal diode D ₁～D ₄Constitute full wave bridge rectifier and voltage stabilizing didoe DW ₂, resistance R ₇, capacitor C ₃The pressure stabilization filter of forming constitutes D.C. regulated power supply jointly and gives one by transistor BG ₁The pulse trigger power supply of forming, transistor BG ₁Base stage insert voltage stabilizing didoe DW ₁, resistance R ₂R ₆, capacitor C ₄Constitute the integration inverter circuit, its collector electrode inserts a load resistance R ₃With by capacitor C ₁, resistance R ₅The differential circuit that constitutes.C ₁R ₅Between meet diode D ₅Communicate with the control utmost point of controllable silicon SCR, other has the elementary ui of three-winding transformer B and input A, B to be in parallel secondary loops u ₀₁Meet a full-bridge rectifier Q ₁, it is in parallel with output C, the D of half-wave thyristor rectifier that its output is connected in series a relay tip J-1, secondary loops u ₀₂Meet a full-bridge rectifier Q ₂, Q ₂Output termination one capacitor C ₅Parallel network with relay J is formed is connected in series into a current-limiting resistance R at output C, the D of half-wave thyristor rectifier ₉And insert a pressure-sensitive protective resistance MY.

In the utility model when work,, when A.C. contactor energising moment, controllable silicon SCR to the contactor coil power supply, can make the contactor adhesive from the CD end, and also adhesive of J-1 contact in adhesive is from full-bridge Q ₁To C, D end input low-voltage direct protective current, keep contactor and continue adhesive; When cutting off A.C. contactor control power supply, relay J discharges J-1 contact cutoff low direct current holding current, and contacts of contactor resets rapidly under the effect of spring power.When resistance R is broken down can not automatically shut down or puncture the time in the silicon controlled rectifier loop ₉Overload is burnt rapidly, can prevent that high-voltage great-current from burning the accident of electric wire connecting junction control coil.

Major advantage of the present utility model is that stable performance, adhesive and release do not have deferred action rapidly, has overload protection function, can prevent to enlarge causality loss.

When the utility model is implemented, can be according to the Capacity Selection controllable silicon SCR and the resistance R of A.C. contactor ₉Specification, crystal diode D ₁～D ₄Adopt the high back-pressure rectifying tube of IN4007, full-bridge Q ₁Adopt four IN4007 crystal diodes to form full-bridge Q ₂Can adopt four IN4001 crystal diodes to form, relay J can adopt JRX series miniature control relay.Piezo-resistance MY can select for use in 120～250 volts of scopes according to A.C. contactor applied voltage value difference.

Claims (7)

1, a kind of no time delay electronics Noiseless running and energy saving device.Comprise unidirectional controllable silicon S CR be main devices be the half-wave thyristor rectifier of coupled in series with ac contactor coil, it is characterized in that by crystal diode D ₁～D ₄Constitute full wave bridge rectifier and voltage stabilizing didoe DW ₂, resistance R ₇, capacitor C ₃The pressure stabilization filter of forming constitutes D.C. regulated power supply jointly and gives one by transistor BG ₁The pulse trigger power supply of forming, transistor BG ₁Base stage insert voltage stabilizing didoe DW ₁, resistance R ₂R ₆, capacitor C ₄Constitute the integration inverter circuit, its collector electrode inserts a load resistance R ₃With by capacitor C ₁Resistance R ₅The differential circuit that constitutes, C ₁R ₅Between meet diode D ₅Communicate with the control utmost point of controllable silicon SCR, other has the elementary ui of three-winding transformer B and input AB to be in parallel secondary loops u ₀₁Meet a full-bridge rectifier Q ₁, it is in parallel with output C, the D of half-wave thyristor rectifier that its output is connected in series a relay tip J-1, secondary loops u ₀₂Meet a full-bridge rectifier Q ₂, Q ₂Output termination one capacitor C ₅Parallel network with relay J is formed is connected in series into a current-limiting resistance R at output C, the D of half-wave thyristor rectifier ₉, and insert a pressure-sensitive protective resistance MY.

2, according to the described no time delay electronics Noiseless running and energy saving device of claim 1, it is characterized in that transistor BG ₁Can adopt 3DK series silicon switching triode.

3, according to the described no time delay electronics Noiseless running and energy saving device of claim 1, it is characterized in that crystal diode D ₁～D ₄Can adopt the high back-pressure rectifying tube of IN4007.

4, according to the described no time delay electronics Noiseless running and energy saving device of claim 1, it is characterized in that full-bridge Q ₁Adopt four IN4007 crystal diodes to form.

5, according to the described no time delay electronics Noiseless running and energy saving device of claim 1, it is characterized in that full-bridge Q ₂Adopt four IN4001 crystal diodes to form.

6,, it is characterized in that relay J can adopt JRX series miniature control relay according to the described no time delay electronics Noiseless running and energy saving device of claim 1.

7,, it is characterized in that piezo-resistance MY can select for use according to the applied voltage value difference of A.C. contactor in 120～250 volts of scopes according to the described no time delay electronics Noiseless running and energy saving device of claim 1.

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