CN201345066Y

CN201345066Y - High-precision automatic AC voltage regulator

Info

Publication number: CN201345066Y
Application number: CNU2009201128810U
Authority: CN
Inventors: 胡元成
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-13
Filing date: 2009-01-13
Publication date: 2009-11-11
Anticipated expiration: 2019-01-13

Abstract

The utility model relates to a high-precision automatic AC voltage regulator which comprises a ring-shaped transformer, a control circuit, a servomotor and a carbon brush device, wherein, the servomotor drives the carbon brush device to rotate through a mechanical transmission mechanism; two power network input connecting terminals and a double-throw switch are arranged on the panel of the voltage regulator; two input ends and a middle pigtail are arranged on the input side of the ring-shaped transformer; the two power network input connecting terminals are connected with one input end of the ring-shaped transformer and the common terminal of the double-throw switch respectively; one output end of the double-throw switch is connected with the other input end of the ring-shaped transformer; the other output end of the double-throw switch is connected with the middle pigtail of the ring-shaped transformer; and the control circuit comprises an automatic return circuit. The AC voltage regulator can position the position of an electrical brush automatically and accurately when the AC voltage regulator is restarted after current failure, and meanwhile has the function of 220V/110V double input voltage conversion so as to be matched with two network voltages and enlarge application range.

Description

High Precision Automatic AC voltage regulator

Technical field

The utility model relates to ac power supply equipment, relates in particular to a kind of High Precision Automatic AC voltage regulator.

Background technology

AC voltage regulator is well known as a kind of common power-supply device, and the kind of AC voltage regulator and purposes also are varied, and the 220V input voltage range of domestic servo-type AC voltage regulator is generally 140V～260V.In actual applications, toroidal transformer is overheated to be burnt out because product overload overload causes, like this to after the shutdown when starting shooting again the residing position of brush strict requirement has been proposed, and the residing position of brush when starting shooting again, prior art is not controlled it, therefore in case outage, the brush of servo-type AC voltage regulator just might be parked in the 140V end, and when the input voltage of sending a telegram here again was 260V, iron core will be satisfied and be closed, and reactance capacity is very big, electric current is also big especially, in this case, be easy to cause overheated the burning out of toroidal transformer in the voltage stabilizer, and may work the mischief load.

Because various countries' line voltage difference, so input voltage is also inequality, as 220V/110V, existing servo-type AC voltage regulator is at single line voltage design and manufacturing, and the country use of identical product in different regions can occur causing the overheated problem that burns out of toroidal transformer because of overload.

Summary of the invention

The residing position of brush was not controlled when the utility model mainly solved existing AC voltage regulator to outage, iron core will be satisfied and closed when sending a telegram here once more, reactance capacity is very big, and electric current is also big especially, is easy to cause the overheated technical matters that burns out of toroidal transformer in the voltage stabilizer; Provide a kind of when after outage, starting shooting again the brush present position can carry out the High Precision Automatic AC voltage regulator of automatic accurate location.

The utility model solves existing AC voltage regulator simultaneously can only mate the technical matters that usable range is restricted with single line voltage; A kind of 220V/110V of having dual input voltage transitions is provided, can mates, enlarge the High Precision Automatic AC voltage regulator of usable range with two kinds of line voltages.

Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the utility model comprises toroidal transformer, control circuit, servomotor, by the carbon brush configuration of servomotor by the mechanical transmission mechanism driven rotary, the panel of voltage stabilizer is provided with two electrical network input wires terminals, the panel of described voltage stabilizer is provided with a double throw switch, the input side of described toroidal transformer has two input terminals and a centre tap, an electrical network input wires terminal links to each other with an input terminal of toroidal transformer, another electrical network input wires terminal links to each other with the common port of described double throw switch, an output terminal of double throw switch links to each other with another input terminal of toroidal transformer, and another output terminal of double throw switch links to each other with the centre tap of toroidal transformer; Described control circuit comprises automatic recurrence circuit, should return circuit automatically and comprise sample circuit, rectification circuit, time constant filtering circuit, bleeder circuit, transport and placing device, energy storage delay circuit, the driven by servomotor circuit that links to each other successively, described sample circuit is the sampling coil of toroidal transformer.The electrical network input voltage is by sampling coil (toroid bag, inner coil tap low pressure is for sample circuit) sampling, through rectification circuit rectification time of delivery (TOD) constant filtering circuit, filtering obtains an output and changes fully and the directly proportional direct current signal of input AC, the sampled voltage that this signal obtains after the bleeder circuit dividing potential drop is delivered to the in-phase end of transport and placing device, reference power supply of anti-phase termination at transport and placing device, the in-phase end of transport and placing device and end of oppisite phase current potential compare, the output terminal of transport and placing device connects the energy storage delay circuit then, the energy storage delay circuit is according to comparative result or energy storage time-delay or straight-through, running by driven by servomotor circuit control servomotor, drive the carbon brush configuration rotation by servomotor by mechanical transmission mechanism, the carbon brush of carbon brush configuration is accurately positioned on the output voltage position that is complementary with input voltage at leisure.In addition, input side by toroidal transformer is set up centre tap, can to select the electrical network input voltage be 220V or 110V by stirring double throw switch in realization, the output of voltage stabilizer remains on respectively in voltage 220V/110V ± 4% scope, use for required electrical equipment, realize that identical product can use in the country of the different line voltages in different regions.

As preferably, the output terminal of described energy storage delay circuit also links to each other with overload protecting circuit, and overload protecting circuit is connected on the outlet line of voltage stabilizer.

As preferably; described overload protecting circuit comprises overload detection circuit, relay drive circuit, relay and warning circuit; the output terminal of described energy storage delay circuit links to each other with the input end of overload detection circuit; the output terminal of overload detection circuit is succeeded electrical apparatus driving circuit and warning circuit; the normal-closed end of relay links to each other with the output terminal of voltage stabilizer, and the common port of relay is electrically connected with carbon brush configuration.When overload detection circuit detects the load overload, output signal to relay drive circuit, the relay normally closed contact disconnects, and cuts off the output of stabilized voltage supply; The output signal of overload detection circuit triggers warning circuit simultaneously, sends warning message.

As preferably, the front and back of described toroidal transformer are fixed with front vertical plate, back vertical plate respectively, and front vertical plate, back vertical plate are all vertical with belt transformer central shaft, and are fixed on the base plate of voltage stabilizer.Guarantee that toroidal transformer fully dispels the heat.

The beneficial effects of the utility model are: after adopting automatic recurrence circuit, when AC voltage regulator is started shooting again in outage, the carbon brush position somewhere when no matter cutting off the power supply, can both be when devoting oneself to work, by detection to input voltage, the running of control servomotor, adjust the carbon brush position, carbon brush is accurately located, thereby make output voltage stabilization, avoid transformer core to satisfy and close, the pulse current when reducing reactance capacity and start, stop the overheated phenomenon that burns out of toroidal transformer and take place, guarantee the load appliance safe handling.By the output of overload protecting circuit disconnection voltage stabilizer when detecting the load overload, protection is by the electric equipment of voltage stabilizer power supply.Switch by switch, make voltage stabilizer to use in the country of different regions to input voltage.Supporting way by riser before and after the transformer that goes in ring makes that the belt transformer in the voltage stabilizer is fully dispelled the heat, and prolongs the serviceable life of voltage stabilizer.

Description of drawings

Fig. 1 is that a kind of circuit of the present utility model connects block diagram.

Fig. 2 is a kind of mounting structure synoptic diagram of toroidal transformer in the utility model.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: the High Precision Automatic AC voltage regulator of present embodiment, comprise toroidal transformer 1, control circuit, servomotor 2, by the carbon brush configuration 4 of servomotor 2 by mechanical transmission mechanism 3 driven rotary, the front and back of toroidal transformer 1 are fixed with front vertical plate 17, back vertical plate 18 respectively, front vertical plate 17, back vertical plate 18 are all vertical with belt transformer central shaft, and are fixed on the base plate 19 of voltage stabilizer.The panel of voltage stabilizer is provided with two electrical network input wires terminals 51,52, the panel of voltage stabilizer is provided with a double throw switch 6, the input side of toroidal transformer has two input terminal 1-1,1-2 and a centre tap 1-3, an electrical network input wires terminal 51 links to each other with an input terminal 1-1 of toroidal transformer, another electrical network input wires terminal 52 links to each other with the common port of described double throw switch 6, an output terminal of double throw switch 6 links to each other with another input terminal 1-2 of toroidal transformer, and another output terminal of double throw switch 6 links to each other with the centre tap 1-3 of toroidal transformer; Control circuit comprises automatic recurrence circuit, and this returns circuit automatically and comprises sample circuit (the sampling coil 1-4 of toroidal transformer 1), rectification circuit 7, time constant filtering circuit 8, bleeder circuit 9, transport and placing device 10, energy storage delay circuit 11, the driven by servomotor circuit 12 that links to each other successively.Wherein the output terminal of energy storage delay circuit 11 also links to each other with overload protecting circuit, and overload protecting circuit is connected on the outlet line of voltage stabilizer.

Overload protecting circuit comprises overload detection circuit 13, relay drive circuit 14, relay 15 and warning circuit 16; the output terminal of energy storage delay circuit 11 links to each other with the input end of overload detection circuit 13; the output terminal of overload detection circuit 13 is succeeded electrical apparatus driving circuit 14 and warning circuit 16; the normal-closed end of relay 15 links to each other with the output terminal of voltage stabilizer, and the common port of relay 15 is electrically connected with carbon brush configuration 4.

Automatic accurate location can be carried out in the brush present position when the utility model was started shooting after outage again, had 220V/110V dual input voltage transitions simultaneously, can mate with two kinds of line voltages, had enlarged the usable range of same voltage stabilizer; Have overload protection and warning function simultaneously, electrical equipment load is played a protective role; And good heat dissipation effect can prolong serviceable life of voltage stabilizer.

Claims

1. High Precision Automatic AC voltage regulator, comprise toroidal transformer (1), control circuit, servomotor (2), by the carbon brush configuration (4) of servomotor (2) by mechanical transmission mechanism (3) driven rotary, the panel of voltage stabilizer is provided with two electrical network input wires terminals (51,52), it is characterized in that: the panel of described voltage stabilizer is provided with a double throw switch (6), the input side of described toroidal transformer has two input terminal (1-1,1-2) with a centre tap (1-3), an electrical network input wires terminal (51) links to each other with an input terminal (1-1) of toroidal transformer, another electrical network input wires terminal (52) links to each other with the common port of described double throw switch (6), an output terminal of double throw switch (6) links to each other with another input terminal (1-2) of toroidal transformer, and another output terminal of double throw switch (6) links to each other with the centre tap (1-3) of toroidal transformer; Described control circuit comprises automatic recurrence circuit, should return circuit automatically and comprise sample circuit, rectification circuit (7), time constant filtering circuit (8), bleeder circuit (9), transport and placing device (10), energy storage delay circuit (11), the driven by servomotor circuit (12) that links to each other successively, described sample circuit is the sampling coil (1-4) of toroidal transformer (1).

2. High Precision Automatic AC voltage regulator according to claim 1 is characterized in that the output terminal of described energy storage delay circuit (11) also links to each other with overload protecting circuit, and overload protecting circuit is connected on the outlet line of voltage stabilizer.

3. High Precision Automatic AC voltage regulator according to claim 2; it is characterized in that described overload protecting circuit comprises overload detection circuit (13); relay drive circuit (14); relay (15) and warning circuit (16); the output terminal of described energy storage delay circuit (11) links to each other with the input end of overload detection circuit (13); the output terminal of overload detection circuit (13) is succeeded electrical apparatus driving circuit (14) and warning circuit (16); the normal-closed end of relay (15) links to each other with the output terminal of voltage stabilizer, and the common port of relay (15) is electrically connected with carbon brush configuration (4).

4. High Precision Automatic AC voltage regulator according to claim 1 and 2, the front and back that it is characterized in that described toroidal transformer (1) are fixed with front vertical plate (17), back vertical plate (18) respectively, front vertical plate (17), back vertical plate (18) are all vertical with belt transformer central shaft, and are fixed on the base plate (19) of voltage stabilizer.