CN1066584C - Precise multiangular arc relay - Google Patents
Precise multiangular arc relay Download PDFInfo
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- CN1066584C CN1066584C CN95103733A CN95103733A CN1066584C CN 1066584 C CN1066584 C CN 1066584C CN 95103733 A CN95103733 A CN 95103733A CN 95103733 A CN95103733 A CN 95103733A CN 1066584 C CN1066584 C CN 1066584C
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Abstract
The present invention relates to a precise multi-angle arc relay which is characterized in that an arc probe and a controller are connected with each other through a cable. A light shield and a supporter are arranged on the arc probe, and a universal joint and fixing bolts are arranged at the bottom of the supporter. Two paths of clock type sensitivity adjusting buttons, two paths of corresponding memorizing and indicating light emitting diodes, an adjusting and running switch and two paths of arc probe jacks are arranged on an outer shell of the controller. The arc probe can lead light signals into a photoelectric converting circuit, then output the light signals to an electric potential triggering circuit by a sampling comparator, and finally send to an executing circuit and a compound contact point circuit for action. The power supply of a large switch cabinet is cut off, and simultaneously, arc points are memorized and indicated.
Description
The electric equipment that this invention belongs to the photo-electric control class arc protection device that opens circuit.When it can disruptive discharge and short circuit arc light occur at large-scale power supply power distribution cabinet, switch cubicle and other important electric equipment of industries such as electric power, chemical industry, coal, implement the general supply open circuit protection.
Prior art does not have this resist technology in large-scale power distribution cabinet, switch cubicle; thereby after the short circuit arc light appears in switch cubicle; owing to can not cut off general supply rapidly, and cause whole switch cubicle or power distribution cabinet burns, cause the electric accident and the fault of other scope simultaneously.
The purpose of this invention is to provide a kind of equipment disruptive discharge to occur and the protective device of the arc light that is short-circuited to large-capacity electrical apparatus.It has multi-angle, multiposition, large-scale monitoring function; Having arc light intensity selects and the distance element adjustable function; Have this protective device movement memory and on-the-spot open loop debug function.
The purpose of this invention is achieved in that the present invention is divided into the two large divisions.A part is an arc probe, and a part is a controller; Two parts connect by cable.As shown in Figure 2, partly adopt two probe modes in arc probe, each probe is made up of high-sensitive photodiode, light-proof housing and the support that has a universal joint, photodiode is introduced the photoelectric switching circuit of controller by cable.Introduce controller after by photodiode the change transitions of arc light being become changes in resistance.The direction and the angle of probe are adjustable.The light-proof housing that photodiode will be housed during installation is fixed on the support, and frame bottom is a universal joint, and the universal joint bottom is a set bolt.Support is selected to be installed near the control point.After arc light appears in the control point, just can cause the variation of controller current potential by changes in resistance after the photodiode sensitization.
The inlet of controller is a photoelectric switching circuit, and it is by the accurate multiturn potentiometer W of clock-type
1(W
2), spacing resistance R
1(R
2) and photodiode CU
1(CU
2) series connection dividing potential drop formation.The dividing point current potential was the highest when photodiode was resistance in the dark, and this current potential will descend from the highest current potential when photodiode becomes bright resistance by resistance in the dark, thereby finish opto-electronic conversion.The potential change that descends is imported into by IC
1(IC
2) in-phase end of the sampling comparator that constitutes.IC
1(IC
2) the center contact of anti-phase termination definite value potentiometer, the other two ends of definite value potentiometer, a termination power positive pole, the other end passes through resistance R
3Ground connection.Work as IC
1(IC
2) the current potential of input drop to the current potential that is lower than definite value potentiometer central point, then IC
1(IC
2) the output current potential descend.IC
1(IC
2) output on the one hand be connected to positive supply by pull-up resistor R, export the current potential flip-flop circuit on the one hand to.
The current potential circuits for triggering are by IC
3(IC
4) and peripheral circuit serve as.Its electronegative potential triggers input and is connected with the output of sampling comparator.When arc light occurring, sampling comparator output electronegative potential makes IC
3(IC
4) upset exports for high potential.The main output of current potential circuits for triggering is connecting the input of executive circuit, and executive circuit is by resistance R
W2(R
W3), diode D
1(D
2), controllable silicon SCR
1(SCR
2), electromagnetic relay constitutes, after the current potential trigger is turned into high potential, through R
W1(R
W2) and diode D
1(D
2) the triggering controllable silicon SCR
2(SCR
3) the control utmost point.The silicon controlled anode is by blocking diode D
3(D
4), the coil of electromagnetic relay connects positive source through the diverter switch contact, the controllable silicon minus earth.Trigger back controllable silicon conducting, the charged adhesive contact of relay coil, thus protection is finished in the trip(ping) circuit of closed large-scale switch cubicle or electric equipment.The contact of electromagnetic relay adopts two two closed forms of opening.Should also be pointed out that: the present invention is from IC
3(IC
4) auxiliary main output draw a high potential synchronous with main output, through resistance R
W6(R
W7) the triggering controllable silicon SCR
3(SCR
4), and SCR
3(SCR
4) anode and negative electrode be connected across electromagnetic relay respectively every pair of normal opened contact on.SCR
3(SCR
4) negative electrode connect coil one end that is connected to trip(ping) circuit behind the movable contact of electromagnetic relay normal opened contact, another termination tripping operation negative supply of breaking coil.Controllable silicon SCR
3(SCR
4) anode connect that the back is connected with the electric positive source that trips on the fixed juncture of electromagnetic relay normal opened contact.Negative pole is a common port in the control power-supply system, thus the tripping operation power cathode with the working power negative pole conllinear of controller, as the reference point of controller circuitry promptly as common port.Inventing the purpose of this circuit, is long in order to solve the electromagnetic relay contact length, the problem that can not connect rapidly.So in fact work as SCR
3(SCR
4) just constituted the noncontacting switch mode when starting trip(ping) circuit after the conducting.They connect trip(ping) circuit in the time of t＜10ms.And electromagnetic joint side's closure after passing through tens of milliseconds.After electromagnetic joint electricity closure, just get and be with SCR
3(SCR
4), simultaneously since the contact short circuit SCR
3(SCR
4) anode, make SRC
3(SCR
4) turn-off, finish the startup function.The advantage deactivation circuit that this composite contact mode has promptly utilized the contactless mode of controllable silicon to be swift in motion, also utilizing has the capacity of contact point mode big, and withstand voltage high advantage is connected circuit.Thereby make the arc light actuating of relay fast, reliably.
Work as SCR
1(SCR
2) also connected the LED of movement memory circuit conducting the time
1(LED
2), because blocking diode D
3(D
4) isolation, LED and controllable silicon and arc probe constitute corresponding relation accurately, so LED has just accurately indicated the arc probe that is subjected to sensitization accordingly and memory, manually excise up to the scene.Excision is finished by diverter switch K, in when excision, and controllable silicon SCR that the present invention has utilized instantaneous trip that switch contact separates
1(SCR
2) anode current, turn-offed controllable silicon.For the convenience and the actual requirement of field adjustable, the present invention has designed the field adjustable circuit.When diverter switch is allocated to " debugging " state from the " RUN " state, relay coil has lost working power, SCR
3(SCR
4) also lost control utmost point triggering power supply and conducting work can not occur.When field adjustable, add the test light of equivalent arc light in arc probe, cause SCR
1(SCR
2) action, but owing to be series at LED resistance in circuit R
W4(R
W5) metering function, make the keep electric current of controllable silicon anode current less than it, and controlled electrode current control, be operated in critical conduction mode, be in little electric current and amplify operating mode, the stool and urine of controllable silicon conducting electric current is proportional to trigger current like this, and trigger current is proportional to arc light intensity again, thereby makes the brightness of LED also be proportional to the intensity of arc light.So when adjusting sensitivity potentiometer W
1(W
2) time can be by observing LED
1(LED
2) brightness determine sensitivity.Adopt the accurate multiturn potentiometer of clock-type to regulate as sensitivity, can be from the position of clock and watch scale indication sensitivity.This also is the important point of the present invention.It is to be noted: diverter switch is dialled when " debugging " side because LED
1(LED
2) with one group of contact of switch in two fixed contacts link together, so LED
1, LED
2Still keep being connected after the moment disconnection of loop through the diverter switch contact, carry out the preparation that shows debug signal with working power.The change action of diverter switch has just cut off the relay coil branch road at this moment and has turn-offed controllable silicon SCR
1(SCR
2).Diverter switch is pulled out LED when " RUN "
1, LED
2Also will serve as the movement memory function.Because at that time working power through diverter switch through relay coil, blocking diode D
3(D
4), also to controllable silicon SCR
1(SCR
2) power supply, anode current will be greater than keeping electric current, just saturation conduction.
So when the present invention is in " debugging " operating mode, can add test light at the probe place, adjust the sensitivity potentiometer, get final product up to LED is luminous; When the present invention was in the " RUN " operating mode, arc light appearred in the place when probe, caused opto-electronic conversion through probe, entered the sampling comparator through the overpotential circuits for triggering, caused the executor circuit action, at first started non-contact circuit and connected trip circuit; Having started immediately has the loop, contact, has taken over noncontacting switch, conducting simultaneously the LED of memory circuit, the position that arc light takes place is provided.
Fig. 1, specification digest accompanying drawing
Fig. 2, circuit theory diagrams of the present invention
Fig. 3, the Appearance Panel schematic diagram of the present invention
Fig. 4, photoelectric switching circuit
Fig. 5, sampling comparison circuit
Fig. 6, current potential circuits for triggering
Fig. 7, execution and movement memory circuit
Fig. 8, field adjustable circuit
Fig. 9, composite contact circuit
Figure 10, power circuit
Shown in Figure 3: 1, the sensitivity adjustment button 3 of the sensitivity adjustment button 2 of probe A, probe B, memory indication LED
14, memory indication LED
25, probe A socket 6, probe B socket 7, " debugging "-" RUN " diverter switch 8, probe bracket 9, universal joint 10, light-proof housing 11, binding post 12, plug
Shown in Figure 4: the light signal that comes from the control point arc probe enters A, B two-way opto-electronic conversion loop respectively through cable.Change-over circuit is by the accurate multiturn potentiometer W of the clock-type of setting sensitivity
1, (W
2), spacing resistance R
1, (R
2) and introduce the photoelectric cell CU of circuit by cable
1, (CU
2) common formation.W
1, W
2Center contact connect positive source, W after connecting with the other end
1, (W
2) the spacing resistance R of a remaining termination
1, (R
2) an end, forming dividing point a (b) is sampled point.R
1, (R
2) the other end be connected the minus earth of photodiode with the positive pole of photodiode.The signal of telecommunication U that draws from dividing point
a(U
b) remove A (B) two-way sampling comparator circuit respectively.Circuit constitutes the back to be passed through W
1, (W
2) adjustment can select the opto-electronic conversion current potential U of sampled point
X:
E---working power voltage R
1---spacing resistance r
Cu---photodiode resistance W
1---the sensitivity potentiometer
When not having arc light, r
CuBe resistance in the dark for maximum, make U
x≈ E; When arc light occurring, r
CuBe bright resistance, resistance diminishes, U
XCorresponding reducing, when light intensity not simultaneously, r
CuDifference, then U
XThe also corresponding difference of numerical value.R
1(R
2) effect be the decision r
CuSampled point starting point current potential when bright resistance, R
1(R
2) existence can reflect the ability of opto-electronic conversion.Promptly under same brightness, change R
1(R
2) and W
1(W
2) between ratio value just can select the changing voltage degree, realize that photoelectric conversion rate is adjustable.As seen, when selected conversion current potential difference just means selected arc light brightness difference, or perhaps sensitization is apart from difference from formula; Simultaneously different luminous intensities and distance are passed through W
1(W
2) adjustment also can get identical changing voltage, thereby make this circuit possess the effect of selective light intensity, chosen distance.Selected sampled point current potential is to adjust W after probe adds equivalent test light
1(W
2) obtain.Because W
1(W
2) adopt the accurate multiturn potentiometer of clock-type, can be during adjusting by the sensitive position of numerical value indication of clock and watch pointer on scale.
Shown in Figure 5: as to be the sampling comparator circuit.By integrated circuit LM393 dual comparator (IC
1, IC
2) and the peripheral cell formation.U
a(U
b) sampled point conversion current potential enters the in-phase end of two comparators of LM 393 respectively; The end of oppisite phase of two comparators is connected to definite value potentiometer R jointly
W1Sliding contact, R
W1A termination working power positive pole, R
W1The other end pass through resistance R
3Ground connection is at R
W1Sliding contact formed relatively definite value current potential of sampling, change R
W1Just can change the definite value current potential.The purpose of setting up the sampling definite value is in order to determine relatively starting point, to discern the rate of change that the arc light forward position strengthens photoelectric conversion signal simultaneously, improve the signal leading edge, improving sensitivity.Capacitor C
2Be the circuit start anti-interference capacitor, when the moment of circuit access power supply, capacitor C
2Be equivalent to short circuit, with the end of oppisite phase instantaneous short circuit of LM393 to ground, thereby keep the high potential of output.R
4, R
5Pull-up resistor for the LM393 output.When arc probe is resistance in the dark, sampled point current potential U
a(U
b) be high potential, U
a(U
b) ≈ E, owing to inserted IC
1, (IC
2) in-phase end, the institute so that IC
1(IC
2) the output high potential; Sampled point current potential U when arc probe is bright resistance
a(U
b) be electronegative potential, work as U
a(U
b) during less than end of oppisite phase definite value current potential, IC
1(IC
2) being output as electronegative potential, this electronegative potential exports connected current potential circuits for triggering to.
Shown in Figure 6: it is to have constituted Schmidt trigger by integrated circuit NE 556 dual time base circuits for the current potential circuits for triggering.IC
3(IC
4) input with the sampling comparator IC
1(IC
2) corresponding connection of output.IC
1Output meet IC
3The low level trigger end, IC
2Output meet IC
4The low level trigger end, their high-order trigger end passes through R respectively
6, C
4And R
7, C
7Be connected to positive source.Form electronegative potential and trigger effective current potential trigger, its inner threshold values is 1/3E.Their main output is connected to executive circuit separately, and their auxiliary output (discharge end) is connected to the composite contact circuit, and this output is through pull-up resistor R simultaneously
11, R
12, diverter switch is connected with positive source.As sampling comparator output electronegative potential U
oMake IC during＜1/3E
3(IC
4) upset, the output high potential is to executive circuit and composite contact circuit.
As shown in Figure 7, executive circuit is by current limliting potentiometer R
W2(R
W3), D
1(D
2), controllable silicon SCR
1(SCR
2), blocking diode D
3(D
4), electromagnetic relay J and diverter switch K form.Electromagnetic relay be two groups often open, two groups of normally closed contacts.Diverter switch is the dpdt double-pole double-throw (DPDT) type.IC
3(IC
4) main output through current-limiting resistance R
W2(R
W3) and diode D
1(D
2) and controllable silicon SCR
1(SCR
2) the control utmost point be connected SCR
1(SCR
2) anode is connected with coil one end of electromagnetic relay on the one hand by blocking diode, the other end of coil is received an end fixed contact of diverter switch with pull-up resistor one end of auxiliary output (discharge end), passes through switch connection positive supply; On the other hand through LED
1(LED
2), R
8(R
9), current-limiting resistance R
W4(R
W5) be connected to positive source through the other one group of fixed contact of diverter switch.Controllable silicon SCR
1(SCR
2) minus earth.When from IC
3(IC
4) high potential of main output triggered controllable silicon SCR
1(SCR
2) the back conducting, this moment, electromagnetic relay coil was by blocking diode D
3(D
4), controllable silicon SCR
1(SCR
2) form the conducting loop with power supply.The electromagnetic relay adhesive, the normal opened contact closure of electromagnetic relay starts the trip(ping) circuit of large electric equipment, cuts off its general supply.Be noted that; The coil of electromagnetic relay is connected with two controllable silicons by two blocking diodes respectively, makes controllable silicon SCR
1(SCR
2) and electromagnetic relay between form " or " logical relation, or SCR
1Conducting or SCR
2Conducting all can make the actuating of relay.And having only string luminous after the controllable silicon conducting in the LED of its anode loop conducting immediately, this is the effect owing to blocking diode, SCR
1Only may conducting LED
1, and SCR
2Only may conducting LED
2, form and the accurate corresponding relation of arc probe.
Work as controllable silicon SCR
1(SCR
2) after the conducting, LED
1(LED
2) just conducting is luminous, forms memory, has only when manually stirring diverter switch, can recover, when manually stirring diverter switch, the instantaneous trip that utilization diverter switch K switch contact separates controllable silicon SCR
1(SCR
2Thereby) anode current turn-off controllable silicon.LED
1(LED
2) extinguish memory immediately and disappear, the effect of memory function can accurately point out the maintainer to seek to occur the position of arc light, in time handles.Sustained diode is connected in parallel at the electromagnetic relay coil two ends
5Instead swash electromotive force to discharge electromagnetic relay coil.
As shown in Figure 8: be the composite contact circuit.The present invention has drawn a high potential signal synchronous with main output from the auxiliary output (discharge end) of current potential circuits for triggering, and auxiliary output is on the one hand through current-limiting resistance R
W6(R
W7), diode D
8(D
9) the triggering controllable silicon SCR
3(SCR
4) the control utmost point, on the one hand through pull-up resistor R
11, R
12Together be connected through the diverter switch fixed contact with electromagnetic relay coil one end and connect positive source, SCR
3, SCR
4Negative electrode connect the movable contact of two normal opened contacts of electromagnetic relay respectively, and respectively to an end of the breaking coil of large-scale switch cubicle, the other end of breaking coil removes to connect the tripping operation power cathode.The controllable silicon anode also connects the fixed juncture of electromagnetic relay normal opened contact respectively and is connected with the tripping operation dc power anode.(in the control system power supply each dc power cathode be link together as reference edge, i.e. common port.) form contactless controllable silicon SCR
3, SCR
4Be connected in parallel on respectively on each normal opened contact of electromagnetic relay, forming has contact and noncontacting switch parallel way.It is long in order to solve the electromagnetic relay contact length time inventing this circuit, can not realize the problem that trips rapidly.So SCR in fact
3(SCR
4) just constituted the noncontacting switch mode that starts trip(ping) circuit after the conducting.They can connect trip(ping) circuit in t＜10ms time, and the electromagnetic relay contact is just closed after passing through tens of milliseconds.Just get behind the electromagnetic relay junction closure and be with SCR
3(SCR
4), simultaneously since the closed short circuit of electromagnetic relay normal opened contact SCR
3(SCR
4) anode and negative electrode, make SCR
3(SCR
4) turn-off, finish the startup mission, the connection of circuit has then been replaced by the contact contact of electromagnetic relay.The advantage deactivation circuit that the mode of this composite contact has promptly utilized the contactless mode of controllable silicon to be swift in motion.Also utilizing has the capacity of contact point mode big, and withstand voltage high advantage is removed connection circuit.Thereby the present invention had both been started rapidly, safe and reliable again.
As shown in Figure 9: be the field adjustable circuit.This circuit is by R
W2(R
W3), controllable silicon SCR
1(SCR
2), LED
1(LED
2), R
8(R
9) current-limiting resistance R
W4(R
W5) and diverter switch K composition.Dial when " debugging " when diverter switch, electromagnetic relay disconnects from positive source, SCR
3(SCR
4) the triggering power supply also be simultaneously severed, because of auxiliary triggering end (discharge end) is the unsettled collector electrode of NE556 circuit internal discharge triode, must connect positive supply by the pull-up resistor of external circuit during work.The cut-out pull-up resistor is connected with positive supply, then SCR
3, SCR
4Just losing the triggering power supply can not conducting.In probe additional examination optometry, cause SCR during field adjustable
1(SCR
2) conducting appears, but owing to be series at LED
1(LED
2) the current-limiting resistance R in loop
W4(R
W5) effect, make the controllable silicon anode current be in critical conduction mode (be in little electric current and amplify operating mode, anode current depends on the amplitude of trigger current and the time of existence, and making it has tangible dependence for trigger current).The stroboscopic sensitivity of photosensitive diode pair arc light when arc probe collects arc light importantly, when arc light is strong, the brightness height, the changes in amplitude of stroboscopic is not obvious; When arc light was weak, brightness was low, and the stroboscopic changes in amplitude is obvious.So after the identification of current potential trigger inner valve current potential, the square wave of exporting during high light is wide, when light was weak, because stroboscopic is obvious, the square wave of output was narrow, and trigger current was big when square wave was wide, and trigger current was little when square wave was narrow.Thereby make the size of controllable silicon conducting electric current be proportional to arc light intensity.Make LED
1(LED
2) brightness also be proportional to the intensity of arc light, so when adjusting sensitivity potentiometer W
1(W
2) time can pass through LED
1(LED
2) brightness determine sensitivity.Same luminous intensity, same distance, LED
1(LED
2) bright more explanation opto-electronic conversion point current potential is also high more, the transfer ratio height.So in the moment that arc light occurs, its forward position just causes the controllable silicon action after the sampling comparator is differentiated, and the arc light stroboscopic of follow-up appearance need not to differentiate, that is to say that the arc light relay sensitivity is meant the ability in identification arc light forward position.That discerns is fast more, and sensitivity is high more.LED
1, LED
2The double action that possesses debugging indication and movement memory is when diverter switch is allocated to " RUN ", because electromagnetic relay coil loop and blocking diode D
3(D
4) resistance much smaller than LED
1(LED
2), R
8(R
9), R
W4(R
W5) resistance of branch road, so " RUN " operating mode silicon controlled conducting electric current during much larger than field adjustable the critical conduction electric current and reliable conducting.LED
1, LED
2The loop all keeps connecting with positive source at the two states of diverter switch, has just excised electromagnetic relay coil and pull-up resistor R during switching
11, R
12Turn-off controllable silicon SCR with the moment of utilizing the diverter switch contact separation
1, SCR
2Remove LED
1(LED
2) the luminous effect of memory, and make LED
1(LED
2) enter the state that prepare to show debug signal.
Utilize this kind of silicon controlled critical characteristic to strengthen convenience, the accuracy of field adjustable, as long as LED glimmers and shown that promptly controllable silicon is triggered, illustrate that this moment, diverter switch was dialled back the " RUN " state, controllable silicon gets final product conducting.As long as glimmering, LED means that just testing light this moment is in low light level state and monitoring distance farthest.
As shown in figure 10: be power circuit.Power supply of the present invention can adopt two kinds of supply power modes of AC and DC, in the present embodiment is to adopt two-stage stabilized voltage power supply series system.By the 48V DC power supply at scene, constitute through the two-stage series connection integrated regulator.The first order adopts the LM317 typical circuit, and the LM7812 typical circuit is adopted in the second level.In the debug process, adjust LM317 adjustable resistance R
W8The input terminal voltage of selecting LM7812 is that 19V gets final product.
As shown in Figure 2: the present invention carries out the Anti-interference Design of higher density to circuit, and the mode that has adopted power-supply system and signal system to develop simultaneously is carried out, thereby guarantees the anti-interference intensity of this device.In power-supply system, introduce capacitor C
1, C
2, C
3, C
4, C
5, C
6, C
7, C
8, C
9, C
10, C
11, C
12, C
13When power supply dropped into suddenly, they suppressed the level of its loca in moment.Because the transient-upset that the input of power supply causes.The dividing potential drop effect of capacitor value goes to zero when transient response, has controlled the foundation of loca interference potential, has absorbed the forward position of disturbing signal especially effectively, reduces the disturbance of forward position harmonic component in circuit.Introduce probe filter capacitor C in the signal system
01, C
02, C
03, C
04, constituted signal disturbance and absorbed circuit, they and R
1, R
2And IC
1, IC
2Input impedance constitute double-T shaped absorption circuit, the branch two-stage absorbs the interference of different frequency.
Whole element of the present invention all is contained in the casing except that probe, and this casing adopts international size, and is unified and standard.Clock-type is housed on the panel of casing sets sensitivity potentiometer, diverter switch, memory indication LED and probe socket.Panel is encapsulated in the transparent organic mask, and field adjustable finishes and loads onto face shield, and is not only attractive in appearance but also safe and reliable, has embodied the measure of precision and the substantial responsibility of its protective device.The present invention because adopt that the clock-type sensitivity of arc probe, the multi-turn of band universal joint is regulated, the memory of luminous LED, the way of output of composite contact, and field adjustable function has practicality.
Claims (15)
1, a kind of multiangular arc relay, be divided into arc probe and controller two parts, its arc probe is divided into light-proof housing, support, universal joint three parts, controller is divided into photoelectric switching circuit, the sampling comparator, the current potential trigger, executive circuit, memory circuit, the field adjustable circuit, the composite contact circuit, tandem formula voltage stabilizing circuit, it is characterized in that: photodiode is contained in the cast light-proof housing in the arc probe, light-proof housing is contained on the support, frame bottom is connected with universal joint, universal joint bottom is the fixing bolt of usefulness, signal cable is drawn the photoelectric switching circuit connection of back with controller from cast light-proof housing afterbody, the outlet of photoelectric switching circuit is connected with the sampling comparator circuit, the output of sampling comparator is connected with the electronegative potential trigger end of current potential circuits for triggering, current potential trigger master output connects with executive circuit, executive circuit is connecting memory circuit, each arc probe is all corresponding with corresponding LED, two LEDs are contained on the panel, the auxiliary triggering end of current potential trigger is connected to the composite contact circuit, normal opened contact with electromagnetic relay in the executive circuit together constitutes output contact of the present invention, and output contact is inserted large-scale switch cubicle, the breaking coil loop of power distribution equipment.
2,, it is characterized in that being equipped with on the panel of controller housing the socket of the arc probe of two-way according to the described multiangular arc relay of claim 1.
3, according to the described multiangular arc relay of claim 1, it is characterized in that being equipped with on the panel of controller housing the accurate multiturn potentiometers of two clock-types, select sensitivity to use for the two-way arc probe.
4,, it is characterized in that photoelectric switching circuit is by spacing resistance (R according to the described multiangular arc relay of claim 1
1R
2) with photosensitive diode (CU
1CU
2) after the series connection, again with the accurate multiturn potentiometer (W of clock-type
1W
2) series connection formation bleeder circuit.
5, according to the described multiangular arc relay of claim 4, the center contact that it is characterized in that the accurate multiturn potentiometer of clock-type constitutes adjustable resistance with the other end back that links together.
6, according to the described multiangular arc relay of claim 1, it is characterized in that the comparator of sampling, be that comparator circuit and periphery by a slice integrated circuit LM393 constitutes, two in-phase ends of integrated circuit LM393 remove to connect the two-way photoelectric conversion signal, together receive definite value potentiometer (R after two end of oppisite phase connect
W1) middle sliding contact, definite value potentiometer (R
W1) a termination positive supply, an other end is through resistance R
3Ground connection.
7, according to the described multiangular arc relay of claim 1, it is characterized in that the current potential circuits for triggering, finish by two time-base circuits among the integrated circuit NE555, their electronegative potential trigger ends separately are connected to the output of two-way sampling comparator respectively, and their main output meets the adjustable resistance (R of executive circuit respectively
W2R
W3) an end, adjustable resistance (R
W2R
W3) the other end connect controllable silicon separately through diode, their auxiliary triggering end connects an end of pull-up resistor separately on the one hand, connects on the one hand the composite contact circuit.
8, according to the described multiangular arc relay of claim 1, it is characterized in that executive circuit, is by adjustable resistance (R
W2R
W3) an end meet diode (D respectively
1D
2) positive pole, diode (D
1D
2) negative pole meet controllable silicon (SCR respectively
1SCR
2) the control utmost point, controllable silicon (SCR
1SCR
2) anode meet blocking diode (D respectively
3D
4) negative pole, blocking diode (D
3D
4) an anodal end that together connects electromagnetic relay coil, the fixed contact of another termination diverter switch K of electromagnetic relay coil.
9, according to the described multiangular arc relay of claim 1, it is characterized in that executive circuit, is by controllable silicon (SCR
1SCR
2) anode also respectively with the light-emitting diode (LED of memory circuit
1LED
2) negative pole connect light-emitting diode (LED
1LED
2) positive pole connecting resistance (R respectively
8R
9) an end, resistance (R
8R
9) the other end be connected on current limliting adjustable resistance (R respectively
W4R
W5) an end, current limliting adjustable resistance (R
W4R
W5) the other end link together and connect a fixed contact of diverter switch (K).
10, described according to Claim 8 multiangular arc relay executive circuit is characterized in that diverter switch (K), adopts the dpdt double-pole double-throw (DPDT) type, and wherein one group two fixed contacts connect together and receive two current limliting adjustable resistance (R in the LED memory branch road
W4R
W5) an end, a fixed contact of other one group of contact connects an end of electromagnetic relay coil, two center moving contacts of diverter switch link together and connect positive source, the center moving contact of switch was connected light-emitting diode (LED with the fixed contact that connects electromagnetic relay coil when diverter switch was in the " RUN " state
1LED
2) branch road no matter " debugging " still the " RUN " state all switch and then connect with positive source by switch (K).
11,, it is characterized in that the auxiliary output of two-way of current potential trigger in the composite contact circuit connects current-limiting resistance (R according to the described multiangular arc relay of claim 1
W6R
W7) an end, current-limiting resistance (R
W6R
W7) the other end be connected to diode (D respectively
8D
9) positive pole, diode (D
8D
9) negative pole be connected to controllable silicon (SCR respectively
3SCR
4) the control utmost point, controllable silicon (SCR
3SCR
4) anode connect respectively on the fixed juncture of two normal opened contacts of electromagnetic relay, negative electrode connects ground connection behind the movable contact of two normal opened contacts respectively.
12, according to the described multiangular arc relay of claim 11, it is characterized in that the auxiliary output of two-way of current potential trigger, meet corresponding pull-up resistor (R respectively
11R
12) an end, pull-up resistor (R
11R
12) the other end and an end of electromagnetic relay coil together be connected to a wherein fixed contact of one group of diverter switch (K).
13, according to the described multiangular arc relay of claim 1, it is characterized in that the field adjustable circuit, is at light-emitting diode (LED
1LED
2) positive pole respectively through resistance (R
8R
9) connecting is connected to current limliting adjustable resistance (R more respectively
W4R
W5) an end, current limliting adjustable resistance (R
W4R
W5) the other end connect positive supply through two fixed contacts in other one group of the diverter switch (K).
14,, it is characterized in that current limliting adjustable resistance (R according to the described multiangular arc relay of claim 13
W4R
W5) set up according to silicon controlled critical conduction electric current, silicon controlled conducting electric current is limited.
15, according to the described multiangular arc relay of claim 1, it is characterized in that tandem formula voltage stabilizing circuit, use the characteristics of adjustable integrated regulator LM317 Adjustable Output Voltage, the input of output with integrated regulator LM7812 is connected, adjust adjustable resistance (R
W8) make adjustable integrated regulator LM317 be output as 19V, thereby guarantee the output 12V of integrated regulator LM7812.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95103733A CN1066584C (en) | 1995-04-17 | 1995-04-17 | Precise multiangular arc relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95103733A CN1066584C (en) | 1995-04-17 | 1995-04-17 | Precise multiangular arc relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1134055A CN1134055A (en) | 1996-10-23 |
| CN1066584C true CN1066584C (en) | 2001-05-30 |
Family
ID=5074834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95103733A Expired - Fee Related CN1066584C (en) | 1995-04-17 | 1995-04-17 | Precise multiangular arc relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1066584C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171942Y (en) * | 1992-11-20 | 1994-07-13 | 鲁润泽 | Loss of phase overload protector for multi-capacity electrical machinery |
| CN2198700Y (en) * | 1994-01-19 | 1995-05-24 | 刘丙波 | Multifunction controller |
-
1995
- 1995-04-17 CN CN95103733A patent/CN1066584C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171942Y (en) * | 1992-11-20 | 1994-07-13 | 鲁润泽 | Loss of phase overload protector for multi-capacity electrical machinery |
| CN2198700Y (en) * | 1994-01-19 | 1995-05-24 | 刘丙波 | Multifunction controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1134055A (en) | 1996-10-23 |
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