CN2146026Y

CN2146026Y - Civil contact a.c automatic voltage regulator

Info

Publication number: CN2146026Y
Application number: CN 92233971
Authority: CN
Inventors: 黄国和
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-18
Filing date: 1992-09-18
Publication date: 1993-11-10
Anticipated expiration: 2002-09-18

Abstract

The utility model discloses a voltage regulator which is principally provided with a tap changer and a control circuit for stabilizing operating conditions. A double moving contacting element composed of a moving main contacting element which is coupled with a moving auxiliary contacting element by an inductance coil is connected with an antispark contacting element, a static contact piece disk, and a bidirectional thyristor to form the tap changer. When the voltage regulator shifts, one contact of the contacting element in the double moving contacting element can be totally connected with the static contact piece of the tap arranged in the static contact piece disk, and obtain the purpose for overcoming interstice power-down generated by shifting; the gate contact of the antispark contacting element always disengages form a gate static contact piece in advance before the instant pressure regulation and shifting, which obtains the shutoff the thyristor, and enables the pressure regulation and the shifting to have no electrical spark.

Description

Civil contact a.c automatic voltage regulator

The utility model relates to a kind of civilian AC automatic regulator of contact that is made of pressure regulator, voltage regulator control circuit, overvoltage/undervoltage and delay protection circuit and servomotor.

At present, known civilian AC automatic regulator divides two classes substantially: a class is the induction type automatic voltage regulator; Another kind of is the civilian pressure regulator of contact.Though the former precision of voltage regulation height, speed is fast but efficient is very low, waveform distortion is more serious.The latter can be divided into two kinds again by the mode difference of control tap: a kind ofly realize automatic Regulation by the tap of switching relay contacting common transformer, this kind automatic voltage regulator efficient height, waveform is good, cost is low, but has the precision of voltage regulation low and gap outage and electric spark phenomenon.Another kind drives the brush smooth motion by relay or SCR control servomotor and changes tap and then realize automatic Regulation, the transformer cost height of this kind automatic voltage regulator, and manufacture difficulty is big, and brush is easy to wear.

The purpose of this utility model is to provide a kind of tap not have gap outage and electric spark generation and the civilian AC automatic regulator of the distortionless contact of voltage waveform.

The purpose of this utility model is achieved through the following technical solutions: be provided with one by tap movable contact piece, static contact dish, electric spark-eliminating touching part, double winding coupled inductor L, the transformer tapping converter that bidirectional triode thyristor KS, framework and insulating base are formed.Movable contact piece is to touch two movable contact pieces that part forms by a moving main part that touches by moving pair of double winding telefault L coupling in this tap change.Should move and main touch part and moving pair is touched part and electric spark-eliminating touching part is fixed in the rotating shaft by nut, screw and insulation offset plate, and place in the closed space that constitutes by static contact dish, framework, insulating base.Be respectively equipped with five metal circles on same stationary contact dish: 1. formed by the plurality of sections discontinuous metal and touch the identical metal circle of rotary motion trace of part tap contact with moving main, moving pair, this each discontinuous metal sheet is corresponding to constitute each tap static contact circle of transformer; 2. touch two identical metal circles of rotary motion trace of the coupling contact of part with moving main, moving pair, these two quoits are used separately as coupling static contact circle; 3. that form by plurality of sections discontinuous metal sheet and identical metal circle with the gate pole contact rotary motion trace of electric spark-eliminating touching part, this each section sheet metal is as gate pole static contact circle; 4. that form by plurality of sections discontinuous metal sheet and with the identical metal circle of main end contact rotary motion trace of electric spark-eliminating touching part, this each intersegmental disconnected sheet metal is held the static contact circle with deciding.When mains voltage variations, according to formula U _{Go into}/ U _{Go out}=N _{Go into}/ N _{Go out}Servomotor rotates under the control of voltage regulator control circuit relay, and by tumbler drive rotating shaft rotation, the contact that makes each movable contact piece and electric spark-eliminating touching part is made contact and is wiped moving on corresponding static contact circle, touch two movable contact pieces that part is coupled to form through L in order to the coil turn employing that changes the transformer input end by moving main, moving pair, be used to guarantee pressure regulation gear shift moment, the moving moving pair of advocating peace touch part two tap contacts one of them remain with a tap static contact and connect, thereby overcome gap that gear shift the produces phenomenon of cutting off the power supply.A steady-working state control circuit is set.When this steady-working state, the two movable contact pieces in the novel pressure regulator of this reality, electric spark-eliminating touching part cooperate the position that goes to, and guarantee that just set bidirectional triode thyristor, double winding coupled inductor stay out of in the output input circuit of pressure regulator.Thereby make this pressure regulator output voltage wave undistorted.This steady-working state control circuit is by double winding coupled inductor L, relay J ₁, J ₂Diode D ₁Resistance R ₀With triode BG ₁, BG ₂Composition is gone between respectively by the AB two ends of double winding coupled inductor and connects diode D ₁Positive terminal A ' and B ' end.

Connect the T of main terminal with gate pole static contact circle behind resistance of gate pole G series connection of bidirectional triode thyristor ₁Head is connected in series T with coupling static contact circle ₂Head inserts power end after connecting main end static contact circle.Be about to make main when touching part tap contact gear shift dialysis circuit when the servomotor pressure regulation turns to, bidirectional triode thyristor ends because of the gate pole contact breaks away from gate pole static contact disconnecting circuit in advance.Play and avoid producing the main electric spark that causes by the high voltage of coupled inductor L in moving main moment of touching part tap contact gearshift procedure dialysis circuit.

Below in conjunction with accompanying drawing the utility model embodiment is further described:

Fig. 1, the utility model circuit theory diagrams

Fig. 2, the utility model tap change structural representation cut-open view

Fig. 3, the utility model tap change contact dish structural representation

The utility model is by pressure regulator, voltage regulator control circuit, overvoltage/undervoltage and delay protection circuit, and servomotor and transmission gear thereof and shell constitute.Pressure regulator mainly comprises transformer B and tap change thereof.The tap of output terminal coil is drawn from the 220V tap.Moving master touches part ［ 2 ］ and moving pair and touches the spacing of part ［ 3 ］ and be made as 0.8-0.9cm, each section tap stationary contact length of a film 1.2-2cm, the spacing 0.5-0.6cm of each section static contact, contact diameter 0.3-0.4cm.

Fig. 1, Fig. 2, tap change shown in Figure 3 by movingly mainly touch part ［ 2 ］, moving pair is touched part ［ 3 ］, electric spark-eliminating touching part ［ 4 ］, static contact dish ［ 1 ］, double winding coupled inductor L, bidirectional triode thyristor KS bakelite frame-saw frame ［ 7 ］, insulation offset plate ［ 5 ］, rotating shaft ［ 10 ］ and transmission gear thereof, nut ［ 11 ］ are formed.

The operating process of the utility model automatic voltage regulator automatic Regulation is:

When supply voltage raises, make the secondary voltage of transformer B raise transistor BG ₁Thereby conducting relay J ₁Adhesive, make servomotor do counterclockwise turn by the track of corresponding setting separately through each contact of the two movable contact pieces of gear driven, electric spark-eliminating touching part, when its rotation is about to make the master to touch part tap contact breaking circuit, gate pole contact ［ 19 ］ moves apart set gate pole static contact ［ 20 ］ in advance, controllable silicon KS turn-offs, power supply connects with transformer B tap static contact ［ 14 ］ through inductance-coupled coil L, moving secondary tap contact ［ 13 ］, thereby guarantee when moving main contact ［ 12 ］ gear shift, input circuit is conducting still, reaches the outage of no gap, nonarcing purpose.When moving master touches part tap contact shift end and continues turn, controllable silicon KS moves to next gate pole static contact ［ 20 ］ conducting because of gate pole contact ［ 19 ］, power supply connects with the next high tap position static contact of transformer B through the moving main part tap contact ［ 12 ］ that touches, reach change transformer input end coil turn, guarantee that making circuit respectively touch part contact output voltage reduces to the voltage stabilizing value.The pressure regulation process that supply voltage descends therewith roughly the same.

The utlity model has efficient height, precision of voltage regulation height, dependable performance, transformer easily makes and low cost and other advantages.

Claims

1, a kind of civilian AC automatic regulator of contact that is made of transformer and tap change, voltage regulator control circuit, servomotor SM, overvoltage/undervoltage and delay protection circuit is characterized in that set tap change connects formation by the two movable contact pieces of conversion, electric spark-eliminating touching part [4], static contact dish [1], bidirectional triode thyristor KS insulating base and framework; This pair movable contact piece is touched part [3] by moving pair of a double winding coupled inductor L coupling and is formed by a moving main part [2] that touches; Be respectively equipped with circular metal transformer tap static contact circle [14] on the static contact dish [1], circular metal coupling static contact circle [17], [18], circular metal gate static contact circle [20], circular master metal end static contact circle [22]; Mains voltage variations impels relay J control servomotor SM to rotate, and by driving member drive rotating shaft rotation, the contact [12], [13], [15], [16], [19], [21] that makes two movable contact pieces and electric spark-eliminating touching part [4] made contact respectively and wiped movingly on corresponding static contact circle [14], [17], [18], [20], [22] separately, be used to change the transformer coil number of turn and reach automatic Regulation; Set steady-working state control circuit is by double winding coupled inductor, relay J ₁, J ₂, diode D ₁, resistance R ₀Each triode BG ₁, BG ₂Form, the AB two ends lead-in wire of double winding coupled inductor connects diode D positive terminal A ' and B ' end.

2, automatic voltage regulator according to claim 1 is characterized in that transformer tapping static contact circle ［ 14 ］ is formed by plurality of sections discontinuous metal sheet, and the size of its circle is identical with the rotary motion trace that moving main, moving pair is touched part tap contact ［ 12 ］, ［ 13 ］.

3, the rotary motion trace of coupling contact ［ 15 ］, ［ 16 ］ that automatic voltage regulator according to claim 1, the size of it is characterized in that being coupled stationary contact metal circle ［ 17 ］, ［ 18 ］ and moving main, moving pair touch part is identical.

4, automatic voltage regulator according to claim 1 is characterized in that gate pole static contact circle ［ 20 ］ is formed by plurality of sections discontinuous metal sheet, and the size of its circle is identical with gate pole contact ［ 19 ］ rotary motion trace.

5, automatic voltage regulator according to claim 1 is characterized in that main end static contact circle ［ 22 ］ is formed by plurality of sections discontinuous metal sheet, and its circle size is identical with main end contact ［ 21 ］ rotary motion trace.

6, automatic voltage regulator according to claim 1 is characterized in that resistance R of gate pole G series connection of bidirectional triode thyristor ₁The back connects with gate pole static contact ［ 20 ］; The T of its main terminal ₁Head connects the T of its main terminal with coupling static contact ［ 17 ］ ₂Head connects main end static contact ［ 22 ］ back and inserts power end.

7, automatic voltage regulator according to claim 6 is characterized in that the end of double winding coupled inductor L connects with coupling static contact ［ 18 ］; Its another termination master holds static contact ［ 22 ］ and main terminal T ₂The node that joins.

8, automatic voltage regulator according to claim 1, it is characterized in that moving main part ［ 2 ］ and the moving pair touched touch part ［ 3 ］ and split in rotating shaft ［ 10 ］ both sides and be clipped between two two blocks of listriums ［ 5 ］ that are enclosed within the rotating shaft ［ 10 ］, the dependence nut clamps and is fixed in the rotating shaft, and main movable contact piece ［ 2 ］ and moving pair are touched part ［ 3 ］ and be fixedly connected by screw and two insulation offset plates ［ 5 ］ respectively.

9, automatic voltage regulator according to claim 8 is characterized in that electric spark-eliminating touching part ［ 4 ］ is being placed in the rotating shaft ［ 10 ］ the two blocks insulation offset plates ［ 5 ］ by screw retention.