CN2469545Y

CN2469545Y - Energy conservation and noise elimination AC contactor with cast-iron core

Info

Publication number: CN2469545Y
Application number: CN 01241388
Authority: CN
Inventors: 高宪彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-25
Filing date: 2001-04-25
Publication date: 2002-01-02
Anticipated expiration: 2011-04-25

Abstract

The utility model provides a cast-iron core energy-saving noise-deadening alternating-current contactor, which comprises a coil, a moving iron core, a fixed iron core and a release spring, and is characterized essentially in that the moving iron core and the fixed iron core are cast iron cores and a rectifying circuit provides the coil with direct current to keep micro-current; a voltage-adjusting circuit and the rectifying circuit are connected in series with an alternating 380v power supply to keep the coil in a micro-current keeping state when working, thereby lowering energy consumption. The connector adopts low-priced cast iron cores to substitute expensive silicon steel plate iron cores, thereby simplifying the technology, reducing the cost and making the operation safe, reliable and noiseless. The utility model is suitable for making and breaking of appliances in industries including factory production, mine exploitation, oil recovery, metallurgy, steel rolling, hoisting machinery, etc.

Description

Cast iron iron core energy-saving damping A.C. contactor

The utility model relates to a kind of A.C. contactor, particularly relates to a kind of cast iron iron core energy-saving damping A.C. contactor.

Traditional electric power system A.C. contactor, its quiet, moving iron core all is to adopt expensive high-quality silicon steel sheet closed assembly to make, the cost height, technology is numerous and diverse, owing to there is core loss, be difficult to improve the power factor of electric power system, and noise is big, contaminated environment again.

The purpose of this utility model is, a kind of energy-saving safe is provided, moves noiseless, manufactures the low novel energy-conserving noise elimination cast iron iron core A.C. contactor of cost, to overcome the deficiency of prior art.

Following mode can realize the utility model:

Energy-saving damping cast iron iron core A.C. contactor, comprise coil, static iron core, moving iron core and retracting spring, quiet, moving iron core, coil, the vertical installation of retracting spring, described quiet, moving iron core is the cast iron iron core, moving main contact is connected with moving iron core, quiet main contact fuses by connecting plate and pedestal, supplies with the little electric current of static iron core coil direct current by rectification circuit.

The utility model is after the moment adhesive of dynamic and static iron core, the attracting state that keeps the cast iron iron core with the little electric current of milliampere level, energy consumption is low, reach non-electromagnetic noise in service, protected environment, economize on electricity is saved electric energy more than 95% than traditional CJ12, CJ20 type A.C. contactor, is the innovative product of CJ20 type A.C. contactor; Adopt cast iron iron core cheap and easy to get, reduced cost, total cost can descend 10-15%, and technology is also oversimplified simultaneously, helps improving the power factor of electric power system.When this A.C. contactor is changed the traditional type A.C. contactor, can keep original installation dimension and mode of operation, be convenient to updating maintenance, in addition, also be specially adapted to the higher electric power system of power reguirements, be applicable to that promptly ac rated voltage is 380V, the power circuit of rated current 600A, connect at a distance, the branch deenergizing and as the motor Fraquent start, stop and usefulness such as reversal connection.

Fig. 1 is the utility model mechanical structure schematic diagram.

Fig. 2 is a coil power supply circuit electrical schematic diagram.

Embodiment:

On pedestal 1 cast iron static iron core 4, coil XQ is arranged, retracting spring 2 is installed on the spring base 11, retracting spring 2 tops link to each other with connecting plate 10, connecting plate 10 is connected as one by post 12 with moving main contact 6 with the moving iron core 5 of cast iron, quiet main contact 7 is connected as a single entity with pedestal 1 by connecting plate 8 and mounting panel 9, and contactor line XQ is by rectifier bridge G ₁Supply with its direct-current working volts after the rectification, be connected in parallel on G ₁The capacitor C of output ₄Charging voltage is kept coil XQ and is worked under low-pressure state, silicon-controlled voltage regulation circuit and rectifier bridge G ₁Be connected in series in and exchange on the 380v power supply shunt capacitance C between the anode of controllable silicon T and negative electrode ₁, can stablize rectifier bridge G ₁Input voltage, the normally-closed contact J of resistance R and relay J ₁Be connected in series between the control utmost point and anode of controllable silicon T, relay coil J is by another rectifier bridge G ₂Power supply is at G ₂With exchange 380V power supply line on the contact XQ-1 of coil XQ of series connection control, relay coil J two ends capacitor C in parallel ₅The spark that produces when being used to absorb the normally-closed contact action of relay.The utility model course of work: add the 380V alternating current, controllable silicon T is triggered, rectifier bridge G ₁Energising work, coil XQ (being 3 among Fig. 1), the instantaneous cast iron iron core 5 that makes moves, dynamic and static iron core adhesive, and drive the dynamic and static main contact synchronizing close of power circuit, make main circuit connect power supply, this moment, retracting spring 2 was compressed, in the moment of dynamic and static iron core adhesive, and normal opened contact XQ-1 closure, relay coil J gets electric, normally-closed contact J ₁Under coil J control, disconnect C ₄Terminal voltage makes rectifier bridge G ₁Power supply is stable, the cast iron iron core the 4, the 5th like this, with milliampere level dc state maintenance work, its the suction-combining force is extremely strong, and reaches state noiseless and the saving power consumption, after outage, electro permanent magnetic disappears, by the elastic force of retracting spring 2, dynamic and static cast iron iron core discharges separately immediately, and drives main contact 6,7 synchronously and disengage, main circuit also opens circuit within 2ms immediately, quits work.The model of this product is decided to be ZJSCJ20.

Claims

1, a kind of novel energy-conserving noise elimination cast iron iron core A.C. contactor, comprise coil, static iron core, moving iron core and retracting spring, quiet, moving iron core, coil, the vertical installation of retracting spring, it is characterized in that: described quiet, moving iron core is the cast iron iron core, moving main contact is connected with moving iron core, quiet main contact fuses by connecting plate and pedestal, supplies with the little electric current of static iron core coil direct current by rectification circuit.

2, contactor according to claim 1, it is characterized in that: rectification circuit is a bridge rectifier, its dc output end shunt capacitance and static iron core coil, the silicon-controlled voltage regulation circuit is connected in series in this bridge rectifier and exchanges on the 380v power supply, at silicon controlled anode and control interpolar series relay normally-closed contact J ₁, relay coil J is powered by another rectifier bridge, in this rectifier bridge and the 380V ac power supply circuit, and the normally opened contact of connecting by the control of static iron core coil.