CN206379306U - Electricity-saving type A.C. contactor voltage shock avoiding concatenation module - Google Patents

Abstract

The utility model discloses a kind of electricity-saving type A.C. contactor voltage shock avoiding concatenation module, module is made up of high-tension circuit, low-voltage circuit and switching circuit, high-tension circuit includes adhesive rectification circuit and charge-discharge circuit, low-voltage circuit includes reduction voltage circuit, keeps rectification circuit and accumulator, the voltage that contactor coil is obtained is in adhesive moment and during keeping, there is provided, and switched over by switching circuit by high-tension circuit and low-voltage circuit respectively.The electricity-saving type A.C. contactor voltage shock avoiding concatenation module causes contactor coil not generate heat, will not aging and puncture, no AC noise, the life-span can greatly extend, and motor will not stop jumping.

Description

Electricity-saving type A.C. contactor voltage shock avoiding concatenation module

Technical field：

The utility model is related to a kind of electricity-saving type A.C. contactor voltage shock avoiding concatenation module.

Background technology：

In the motor control of industrial and mining enterprises, a large amount of operatings for carrying out controlled motor using A.C. contactor.When control power supply ripple When dynamic, contactor is discharged due to contactor coil voltage transient voltage, motor stop jumping is caused, so as to influence technique productions Continuous operation.

Utility model content：

Technical problem to be solved in the utility model be to provide a kind of motor will not stop jumping electricity-saving type A.C. contactor Voltage shock avoiding concatenation module, the voltage shock avoiding concatenation module causes contactor coil not generate heat, will not aging and puncture, no exchange is made an uproar Sound, the life-span can greatly extend.

Technical solution of the present utility model is to provide a kind of electricity-saving type A.C. contactor voltage shock avoiding concatenation module, mould Block is made up of high-tension circuit, low-voltage circuit and switching circuit, and high-tension circuit includes adhesive rectification circuit and charge-discharge circuit, low pressure Circuit includes reduction voltage circuit, keeps rectification circuit and accumulator, and the voltage that contactor coil is obtained is in adhesive moment and is protecting During holding, provided respectively by high-tension circuit and low-voltage circuit, and switched over by switching circuit.

Using compared with prior art, the utility model has advantages below after above structure：The utility model only has electricity Resistance, electric capacity, diode totally eight elements, not to the electronic component of voltage-sensitive, except a resistance, without other heating member Part, so its work is very reliable, power consumption is very low, and the utility model is serially connected on former loop, it is not necessary to which extra draws Line, installs that wiring is very simple, and using after this module, contactor will not discharge when shaking electricity, thus ensure that motor will not stop jumping, After the utility model, the operating power consumption of contactor coil drops to 1.5W by taking 100A as an example by 25VA, operating voltage by 220VAC is reduced to 12VDC, so, and contactor coil will not generate heat, will not aging and puncture, no AC noise, the life-span can be significantly Ground extends.

Preferably, adhesive rectification circuit is the first rectifier bridge, charge-discharge circuit includes charging capacitor and discharge resistance, drop Volt circuit includes the first electric capacity and the second electric capacity, and holding rectification circuit is the second rectifier bridge, and accumulator is storage capacitor, switching Circuit is diode；Wherein, two inputs of the first rectifier bridge are connected with the zero line and phase line of input power respectively, and positive is defeated Go out end to be connected with the positive pole of charging capacitor, discharge resistance is in parallel with charging capacitor, and the first electric capacity, the second electric capacity input are gone here and there respectively Connect in the phase line and zero line of input power, output end is connected respectively to the input of the second rectifier bridge, the output of the second rectifier bridge The positive and negative positive pole and negative pole for terminating to storage capacitor, switching circuit is completed by diode.

Brief description of the drawings：

Fig. 1 is structural representation of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment：

The utility model is described in further detail with reference to the accompanying drawings and detailed description：

As illustrated in fig. 1 and 2, a kind of electricity-saving type A.C. contactor voltage shock avoiding concatenation module, module is by high-tension circuit, low tension Road and switching circuit composition, high-tension circuit include adhesive rectification circuit and charge-discharge circuit, and low-voltage circuit includes reduction voltage circuit, protected Rectification circuit and accumulator are held, the voltage that contactor coil is obtained is in adhesive moment and during keeping, respectively by high-tension electricity Road and low-voltage circuit are provided, and are switched over by switching circuit.Specifically, adhesive rectification circuit is the first rectifier bridge BR1, is filled Discharge circuit includes charging capacitor C3 and discharge resistance R1, and reduction voltage circuit includes the first electric capacity C1 and the second electric capacity C2, keeps whole Current circuit is the second rectifier bridge BR2, and accumulator is storage capacitor C4, and switching circuit is diode D1；Wherein, the first rectifier bridge BR1 two inputs zero line L ends respectively with input power, phase line N-terminal are connected, positive output end with charging capacitor C3 just Pole is connected, and discharge resistance R1 is in parallel with charging capacitor C3, and the first electric capacity C1, the second electric capacity C2 inputs concatenate input power respectively L ends, on phase line N-terminal, output end is connected respectively to the second rectifier bridge BR2 input, and the second rectifier bridge BR2 output is positive and negative Storage capacitor C4 positive pole and negative pole is terminated to, switching circuit is completed by diode D1, during adhesive, charge-discharge circuit output voltage Higher than voltage on storage capacitor C4, diode D1 cut-offs are not turned on, and direct current output is provided by charge-discharge circuit；Adhesive terminates Afterwards, the voltage of the voltage ratio charge-discharge circuit on storage capacitor C4 is high, diode D1 conductings, accumulator output voltage to contact On device K1 coils, the utility model need not control circuit and switch element, moreover, the utility model is to be serially connected in contactor coil On loop, without additional power supply and lead, the utility model is designed as guide rail installation, and by A.C. contactor, original is connect Tentaculum winding wire A1, A2 are connected to the zero line L ends of the input power of this module, phase line N-terminal, then with two wires that this module is defeated Go out and be connected with contactor K1 loop A 1, A2 ends, input, exported all without polar requirement.

Its principle is as follows, and A.C. contactor needs larger electromagnetic force in adhesive, and pickup time is then very short.Input power During arrival, the first rectifier bridge BR1 charges to charging capacitor C3 by the resistance of contactor K1 coils, opened to its direct rectification Beginning charging transient, charging capacitor C3 is equivalent to short circuit, and the DC voltage that the first rectifier bridge BR1 rectifications come is all added to contactor K1 coils, contactor K1 coils obtain very big DC voltage and adhesive, with the extension in charging interval, charging capacitor C3 voltages Rise, charging current rapid decrease, the voltage that contactor K1 coils are obtained from high-voltage charging circuit also rapid decrease, until becoming In zero.The voltage of very little is only needed to after contactor K1 coil adhesives with regard to hold mode can be maintained, so using the first electric capacity C1, Two electric capacity C2 decompressions carry out rectification to the second rectifier bridge BR2 again and filtered by storage capacitor C4, obtain the direct current of stabilizing low voltage Electricity is simultaneously stored on storage capacitor C4, because of no charging resistor when storage capacitor C4 charges, so, charging rate compares charging capacitor C3 charging rates are faster, so before pick-up voltage drops to contactor coil release, the voltage on storage capacitor C4 is already It is increased beyond the holding voltage of contactor coil.When the holding voltage on storage capacitor C4 is more than the electricity at contactor K1 coils two ends During pressure, diode D1 is turned on automatically, and contactor K1 coil voltages seamlessly switch to low tension loop, in the handover, voltage without fluctuation, So contactor will not produce shake.When shaking electricity, because storage capacitor C4 stores enough energy, the electric energy of storage is to contact Device K1 coil discharges, contactor K1 coil voltages slowly decline, and discharge into the time of contactor release for 1-3 seconds (by energy storage electricity Hold C4 capacity to determine), if power up is normal before the contactor release, low tension loop voltage rises instantaneously to normal electricity Pressure, contactor K1 coils then continue to keep attracting state, so as to avoid contact with device action.During shutdown, input power disappears, contact Device coil maintains attracting state by being stored in the electric energy on charging capacitor C3, after 1-3 seconds, and coil voltage drops to release Voltage, at this moment coil electromagnetism suction is less than coil spring power, releasing winding.Meanwhile, adhesive charging capacitor C3 passes through discharge resistance R1 discharge, after electric discharge, can wait again next time electric adhesive.It is general not over 1 second due to shaking the electric time, so, shake Contactor will not discharge when electric, so as to ensure that motor will not stop jumping.

After the utility model, the operating power consumption of contactor coil drops to 1.5W, work electricity by taking 100A as an example by 25VA Pressure 12VDC is reduced to by 220VAC, so, contactor coil will not generate heat, will not aging and puncture, no AC noise, life-span meeting Greatly extend.More importantly the utility model only has resistance, electric capacity, diode totally eight elements, not quick to voltage The electronic component of sense, except the resistance in a 200K Europe, without other heater element, so its work is very reliable, power consumption is very It is low, less than 0.5W.The utility model is serially connected on former loop, it is not necessary to extra lead, installs wiring very simple.

Only the utility model preferred embodiment is described above, but is not to be construed as the limit to claim System.Equivalent structure or equivalent flow conversion that every utilization the utility model specification and accompanying drawing content are done, are included in this Within the scope of patent protection of utility model.

Claims (1)

1. a kind of electricity-saving type A.C. contactor voltage shock avoiding concatenation module, it is characterised in that：Module by high-tension circuit, low-voltage circuit and Switching circuit is constituted, and high-tension circuit includes adhesive rectification circuit and charge-discharge circuit, and low-voltage circuit includes reduction voltage circuit, keeps whole Current circuit and accumulator, the voltage that contactor coil is obtained in adhesive moment and during keeping, respectively by high-tension circuit and Low-voltage circuit is provided, and is switched over by switching circuit, and adhesive rectification circuit is the first rectifier bridge, and charge-discharge circuit includes filling Electric capacity and discharge resistance, reduction voltage circuit include the first electric capacity and the second electric capacity, and holding rectification circuit is the second rectifier bridge, energy storage Circuit is storage capacitor, and switching circuit is diode；Wherein, two inputs of the first rectifier bridge respectively with input power zero Line and phase line connection, positive output end and the positive pole of charging capacitor are connected, and discharge resistance is in parallel with charging capacitor, the first electric capacity, Second electric capacity input is concatenated in the phase line and zero line of input power respectively, and output end is connected respectively to the input of the second rectifier bridge End, the positive and negative positive pole and negative pole for terminating to storage capacitor of output of the second rectifier bridge, switching circuit is completed by diode.