CN2777743Y

CN2777743Y - Energy-saving noiseless running controller for ac contactor

Info

Publication number: CN2777743Y
Application number: CN 200520069577
Authority: CN
Inventors: 陆旺生
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-09
Filing date: 2005-03-09
Publication date: 2006-05-03
Anticipated expiration: 2015-03-09

Abstract

The utility model provides an energy-saving noiseless running controller for an AC contactor, which is mainly composed of a voltage transformer, a low-voltage rectification circuit, a high-voltage rectification circuit, a triggering delay circuit and a triggering switch circuit, wherein the secondary stage of the transformer is connected to the input end of the low-voltage rectification circuit, and the output end of the low-voltage rectification circuit is connected to the input end of the triggering delay circuit; the output ends of the triggering delay circuit are respectively connected to the input end of the triggering switch circuit and the output end of the high-voltage rectification circuit, and a rectifying diode is connected in series between the output end of the low-voltage and the output end of the high voltage rectification circuit; the primary stage of the transformer is connected to the input end of the high-voltage rectifying circuit after passing through the triggering switch circuit. The utility model has the advantages of reasonable structure, easy installation, high universality, easy maintenance, high instantaneous-starting speed, energy saving during running, reliable operation during the fluctuation of the power supply voltage in the scope of +/-30%, no noise, no temperature rise of coils and effective extension of the operating life of the utility model. The utility model is suitable for being matched with various AC contactors, and particularly, electricity can be saved by more than 90 percent for the AC contactor of which is rated current is higher than 40 A.

Description

Alternating-current contactor energy-saving silent running controller

Affiliated technical field

The utility model relates to the energy-saving, noiseless operation controller of a kind of controller of A.C. contactor, particularly a kind of A.C. contactor.

Background technology

A.C. contactor is widely used a kind of low-voltage electrical apparatus in the industrial production, and its coil is by feeding the alternating current operation of working, exist energy consumption greatly, problem such as coil heating; Simultaneously, because that the alternating voltage that offers A.C. contactor work often fluctuates is bigger, thereby its mechanical mechanism and major-minor contact easily produce vibration, and noise is bigger, also directly influences the safe and reliable operation of A.C. contactor, shortens its useful life.For addressing the above problem, people also once provided some technical schemes in the hope of improving, as realize the operation of making an uproar of the energy-conservation nothing of A.C. contactor with direct current control device, but because its circuit is comparatively complicated, and changed original loop of A.C. contactor, thereby install, safeguard inconvenience, versatility is not strong, fails so far to be applied.

Summary of the invention

For overcoming the deficiencies in the prior art part, the utility model provides that a kind of rational in infrastructure, energy-saving, noiseless, installation and maintenance are convenient, the alternating-current contactor energy-saving silent running controller of highly versatile.

The technical scheme that its technical problem that solves the utility model adopts is: its main transformer, lower pressure rectifier circuit, high-voltage rectifier, triggering delay circuit and trigger switch circuit are formed; The secondary input that is connected to the lower pressure rectifier circuit of transformer, the output of lower pressure rectifier circuit is connected to the input that triggers delay circuit, trigger the delay circuit output and be connected to the input of trigger switch circuit and the output of high-voltage rectifier respectively, and between the output of lower pressure rectifier circuit and high-voltage rectifier, be connected in series a rectifier diode; The elementary input that behind the trigger switch circuit, is connected to high-voltage rectifier of transformer.

Above-mentioned lower pressure rectifier circuit and high-voltage rectifier are full bridge rectifier.

Above-mentioned trigger switch circuit is relay or thyristor gating circuit.

The beneficial effects of the utility model are: rational in infrastructure, only need two wiring disconnections during use with the actuating coil of A.C. contactor, and insert this controller and get final product, do not change the primary circuit of A.C. contactor, easy for installation, highly versatile, for ease of maintenaince; And owing to make A.C. contactor adopt high direct voltage starting, dc low-voltage operation, transient starting speed is fast, can both reliably working when the supply voltage of A.C. contactor ± 30% fluctuation, and energy saving in running, noiseless, coil does not have temperature rise, has prolonged its working life effectively.The utility model is suitable for the above A.C. contactor economize on electricity of all kinds of A.C. contactors supporting use, particularly 40A and can reaches more than 90%.

Description of drawings

Fig. 1 is the electric theory diagram of the utility model embodiment;

Fig. 2 is the electrical schematic diagram of the utility model embodiment.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

As can be seen from Figure 1: its main transformer T of the utility model embodiment, lower pressure rectifier circuit 1, high-voltage rectifier 4, triggering delay circuit 2 and trigger switch circuit 3 are formed; The secondary input that is connected to lower pressure rectifier circuit 1 of transformer T, the output of lower pressure rectifier circuit 1 is connected to the input that triggers delay circuit 2, trigger delay circuit 2 outputs and be connected to the input of trigger switch circuit 3 and the output of high-voltage rectifier 4 respectively, and between the output of lower pressure rectifier circuit 1 and high-voltage rectifier 4, be connected in series a rectifier diode D5; The elementary input that behind trigger switch circuit 3, is connected to high-voltage rectifier 4 of transformer T.

As can be seen from Figure 2: above-mentioned lower pressure rectifier circuit 1 and high-voltage rectifier 4 are full bridge rectifier, i.e. D1-4, D7-10 are respectively as Dc low voltage power supply and direct current height power supply; The secondary input that is connected to low-voltage full-bridge rectification circuit D1-4 of transformer T, and between its two output and be connected to filter capacitor C1 and C2; The output of low-voltage full-bridge rectification circuit D1-4 is connected to mainly the input of the triggering delay circuit 2 that is made of triode VT1, VT2, resistance R 1, R2, R3, R4, R5, capacitor C 3, voltage stabilizing didoe D6 and photoelectrical coupler ic chip (adopting the MOC3041 type); The collector electrode of above-mentioned triode VT1 is connected to input 1 pin of photoelectrical coupler ic chip after resistance R 1, the collector electrode of the base stage of triode VT1 and triode VT2 joins, this contact is connected to the positive pole (being the positive pole of the output of low-voltage full-bridge rectification circuit D1-4) of Dc low voltage power supply after resistance R 2, the base stage of triode VT2 is after resistance R 3 and capacitor C 3, and triode VT1, the emitter of VT2 is connected to the negative pole (being the negative pole of the output of low-voltage full-bridge rectification circuit D1-4) of Dc low voltage power supply in the lump, and the contact that resistance R 3 and capacitor C are 3 is through resistance R 5, behind the R4, and input 2 pin of photoelectrical coupler integrated package are connected to the positive pole of Dc low voltage power supply in the lump; And between the negative pole of contact between resistance R 4, R5 and capacitor C 3 and be connected to voltage stabilizing didoe D6.For showing the operating state of this controller, as the LED of display lamp be connected to Dc low voltage power supply after resistance R 9 is connected.

The reverse-blocking tetrode thyristor circuit (also can adopt relay) of switch triggering circuit 3 for mainly constituting by controllable silicon BCR, capacitor C 4 and resistance R 6, R7, R8, the T1 of controllable silicon BCR, G pin connecting resistance R6, the bipod of resistance R 6 also is connected to the elementary end of transformer T, output 6 pin of the photoelectrical coupler ic chip in the triggering delay circuit 2 respectively, is connected between silicon controlled T1, the T2 after capacitor C 4 and resistance R 8 series connection; The T2 of controllable silicon BCR after resistance R 7, be connected to the photoelectrical coupler ic chip output 4 pin, and directly be connected to an end of high pressure full bridge rectifier D7-10 input, the other end of high pressure full bridge rectifier D7-10 input is connected to the elementary other end of transformer T.The positive pole of high pressure full bridge rectifier D7-10 output connects the negative pole of rectifier diode D5, the positive pole of rectifier diode D5 is connected to the positive pole of low-voltage full-bridge rectification circuit D1-4 output, and high pressure full bridge rectifier D7-10 negative pole is connected to the negative pole (negative pole of low-voltage full-bridge rectification circuit D1-4 output) of Dc low voltage power supply.

During use, two wiring disconnections with the A.C. contactor actuating coil insert the utility model.During work, starting along with A.C. contactor, transformer T is from next utmost point output LOW voltage, input to delay trigger circuit 2 after low-voltage full-bridge rectification circuit D1-4 becomes direct current, delay trigger circuit 2 provides a delay pulse (50-100ms) and makes controllable silicon trigger switch circuit turn-on, high-voltage rectifier D7-10 output high direct voltage voltage is given the actuating coil of A.C. contactor, make its adhesive, dc low-voltage voltage is added on the actuating coil of A.C. contactor through diode D5 simultaneously, keep adhesive, rectifier diode D5 stops high direct voltage instead in the dc low-voltage loop.Controllable silicon trigger switch circuit is closed after trigger impulse finishes, and the A.C. contactor actuating coil is kept operation by dc low-voltage, so just can reduce the work energy consumption of A.C. contactor effectively, does not produce temperature rise, and noiseless.

Claims

1, alternating-current contactor energy-saving silent running controller is characterized in that: main transformer T, lower pressure rectifier circuit (1), high-voltage rectifier (4), triggering delay circuit (2) and trigger switch (3) circuit are formed; The secondary input that is connected to lower pressure rectifier circuit (1) of transformer T, the output of lower pressure rectifier circuit (1) is connected to the input that triggers delay circuit (2), trigger delay circuit (2) output and be connected to the input of trigger switch circuit (3) and the output of high-voltage rectifier (4) respectively, and between the output of lower pressure rectifier circuit (1) and high-voltage rectifier (4), be connected in series a rectifier diode D5; The elementary input that behind trigger switch circuit (2), is connected to high-voltage rectifier (4) of transformer T.

2, alternating-current contactor energy-saving silent running controller according to claim 1 is characterized in that: above-mentioned lower pressure rectifier circuit (1) and high-voltage rectifier (4) are full bridge rectifier D1-4, D7-10.

3, alternating-current contactor energy-saving silent running controller according to claim 1 is characterized in that: trigger delay circuit (2) and mainly be made of triode VT1, VT2, resistance R 1, R2, R3, R4, R5, capacitor C 3, diode D6 and photoelectrical coupler ic chip; The collector electrode of triode VT1 is connected to input 1 pin of photoelectrical coupler ic chip after resistance R 1, the collector electrode of the base stage of triode VT1 and triode VT2 joins, this contact is connected to the positive pole of Dc low voltage power supply after resistance R 2, the base stage of triode VT2 after resistance R 3 and capacitor C 3 and the emitter of triode VT1, VT2 be connected to the negative pole of lower pressure rectifier circuit output end in the lump, the contact that resistance R 3 and capacitor C are 3 behind resistance R 5, R4 and input 2 pin of photoelectrical coupler IC integrated package be connected to the positive pole of lower pressure rectifier circuit output end in the lump; And between the negative pole of contact between resistance R 4, R5 and capacitor C 3 and be connected to voltage stabilizing didoe D6.

4, alternating-current contactor energy-saving silent running controller according to claim 1 is characterized in that: above-mentioned trigger switch circuit (3) is relay or controllable silicon trigger switch circuit.

5, alternating-current contactor energy-saving silent running controller according to claim 4, it is characterized in that: controllable silicon trigger switch circuit mainly is made of controllable silicon BCR, capacitor C 4 and resistance R 6, R7, R8, connecting resistance R6 between the T1 of controllable silicon BCR, the G pin, the bipod of resistance R 6 also are connected to the elementary end of transformer T, an end of triggering delay circuit (2) output respectively; Be connected between silicon controlled T1, the T2 pin after capacitor C 4 and resistance R 8 series connection; The T2 pin of controllable silicon BCR is connected to the other end that triggers delay circuit (2) output, and directly is connected to an end of high-voltage rectifier input after resistance R 7.