CN2259020Y - Automatic controller for earthing knife of isolating switch - Google Patents
Automatic controller for earthing knife of isolating switch Download PDFInfo
- Publication number
- CN2259020Y CN2259020Y CN 95212389 CN95212389U CN2259020Y CN 2259020 Y CN2259020 Y CN 2259020Y CN 95212389 CN95212389 CN 95212389 CN 95212389 U CN95212389 U CN 95212389U CN 2259020 Y CN2259020 Y CN 2259020Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- isolating switch
- switch
- disconnecting link
- ground connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an automatic control device for a grounding isolating switch. The automatic controlling device, which is suitable for the automatic control of the switch-backing operation of the grounding isolating switch of a feed line in a traction substation (pavilion), comprises a mechanical transmission mechanism which is composed of a draw rod, an energy storage spring connected with the mechanical transmission mechanism, etc., a locking mechanism which is composed of a tripping rod, a locking rod, a locking rod, an electric coil connection shaft, etc., and a control circuit which is composed of a receiving amplifying circuit, an AND gate circuit, a comparison shaping circuit A, a comparison shaping circuit B, an inverting circuit, an oscillating circuit and a DC power supply circuit. The action thereof is reliable, and the switch-backing time of the grounding isolating switch can be shortened.
Description
The utility model isolating switch ground connection disconnecting link automatic control equipment, be applicable to when electrification railway contact net stops sending electric operation, during the interior feeder line isolating switch of traction substation (booth) back brake, the grid switching operation of isolating switch ground connection disconnecting link is controlled automatically, also is applicable to the automatic electrical verification that whether charged contact line is.
Installed telemechanism additional in the electrification railway contact net electric substation (booth) at present, its objective is back brake in order to the interior electric equipment disconnecting link of control electric substation's (booth), improve back brake speed, reliability and the operation management automatization level of disconnecting link, shorten the time of accident treatment and maintenance " skylight ", enlarge transport capacity, alleviate operator on duty's labour intensity.The automatic back brake of the telemechanism may command isolated switch main disconnecting link that installs additional, the back brake of its ground connection disconnecting link is still by manually operating.And the grid switching operation of the electric equipment disconnecting link in the traction substation (booth) concentrates on more than 90% on the feeder line isolating switch, because the back brake of ground connection disconnecting link is by manually operating, install that the back brake time of every feeder line isolating switch has only reduced 05 minute behind the telemechanism additional, its operating time still needs 7 minutes.In addition, the whether charged electrical verification of contact line is still by manually finishing.The purpose that installs telemechanism additional does not have and can reach.
The purpose of this utility model provides a kind of isolating switch ground connection disconnecting link automatic control equipment, it is simple in structure, reliable in action, economical and practical, can shorten the back brake time of isolating switch ground connection disconnecting link, shorten the time of accident treatment and maintenance " skylight ", enlarge transport capacity, improve the automatization level of operation management, alleviated operator on duty's labour intensity.In addition, can carry out automatic electrical verification to whether charged contact line is.
The purpose of this utility model can realize in the following manner.
Isolating switch ground connection disconnecting link is controlled device automatically and is made up of mechanical transmission mechanism, blocking mechanism and control circuit.Mechanical transmission mechanism by pull bar, the energy-stored spring that is attached thereto, be sleeved on the push pipe on the energy-stored spring and the adjustment nut that is sleeved on the pull bar is formed.Blocking mechanism is made up of release lever, deadlock lever, deadlock lever rotating shaft, deadlock lever and motor coil connecting axle, auxiliary switch connecting rod, the little connecting lever of auxiliary switch and bearing pin, and an end of deadlock lever adopts impact type to be connected with the motor coil of control circuit.Control circuit is by receiving amplifying circuit, linking to each other step by step with gate pulse output circuit, outlet circuit, relatively shaping circuit A links to each other with the time-delay phase inverter, relatively shaping circuit B links to each other with phase inverter, and be connected to receive amplifying circuit and and the gate pulse output circuit between, oscillating circuit is connected on the input with the gate pulse output circuit, and the 220V direct current offers each circuit stabilized voltage power supply behind the DC power supply circuit lowering and stabilizing blood pressure.
In control circuit, receiving amplifying circuit is that antenna TX is gone up the electromagnetic signal of induction through triode T
1(T
7) after detection amplifies, again through capacitor C
2(C
8) output direct current signal more stably after the filtering, owing to capacitor C
2(C
8) clamped effect, guarantee the not misoperation of outlet circuit; Relatively shaping circuit A is with from triode T
1The dc pulse signal of collector electrode output compares shaping, exports constant ± 12V direct current, and relatively shaping circuit B is from triode T
7The dc pulse signal of collector electrode output compares shaping, exports constant ± 12V direct current; The time-delay phase inverter be with by shaping circuit A output DC relatively through diode D
3After clamped, the direct current signal of time-delay paraphase output correct polarity, capacitor C
4The anti-interference filtration effect owing to produced regular hour time-delay (6-10 second), guaranteed the not misoperation of outlet circuit.Phase inverter is will be from the direct current signal of relatively shaping circuit B output through diode D
12After clamped, paraphase and power amplification; Oscillating circuit is to produce the oscillator signal of enough driving powers is arranged, and has in moment during energized, and the time-delay output pulse signal guarantees the not misoperation of outlet circuit; With the gate pulse output circuit be that pulse signal with oscillating circuit output is through diode D
5After amplify, defeated by pulse transformer MB time level by dc pulse signal, diode D
4, D
5, D
13Form AND circuit, can prevent reason generation rub-out signals such as front stage circuits componentry damage, make the outlet circuit erroneous action, diode D
6Be light-emitting diode, in order to the operating state of display circuit; The outlet circuit is by controllable silicon KKG
1, KKG
2By or conducting, the electric current of controlling by motor coil HQ has, does not have, thereby determines whether motor coil moves C
9Be anti-interference capacitor, prevent when the 220V direct current fluctuates greatly for a certain reason controllable silicon false triggering, diode D
16Be fly-wheel diode, it can eliminate the inverse overvoltage that motor coil HQ produces, isolating switch auxiliary contact GK disconnects connecting at isolating switch, it guarantees after isolating switch is opened, the control circuit energized prevents the misoperation when isolating switch is closed of ground connection disconnecting link, with ground connection disconnecting link closure, contact DD after guaranteeing ground connection disconnecting link closure, cuts off controllable silicon KKG
1, KKG
2Power supply during conducting makes it recover cut-off state, has also cut off the power supply of control circuit simultaneously, prevents to export when isolating switch is closed circuit erroneous action.
Because the design feature of above-mentioned control circuit, prevented the outlet circuit erroneous action, one end of deadlock lever is connected with the motor coil of control circuit, adopting electromagnet to inhale moving impact type connects, improved the reliability of blocking mechanism action, thereby make strong, the reliable in action of antijamming capability of the present utility model, guaranteed isolating switch ground connection disconnecting link back brake closure, open accurately.
The utility model is through probationary certificate: it is simple in structure, antijamming capability is strong, reliable in action, economical and practical, the back brake that has shortened isolating switch ground connection disconnecting link to, each shortened to 1 minute by 7 minutes to make every feeder line transmission or not back brake time, shorten the time in accident treatment and maintenance " skylight ", enlarged transport capacity, improved the automatization level of fortune villous themeda management, for realizing the unattended condition of having created of traction substation (booth), alleviated operator on duty's labour intensity.In addition, can carry out automatic electrical verification to whether charged contact line is.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1: be the utility model structural representation (the isolated switch main switch tool is closing the position, and the ground connection disconnecting link is in a minute position)
Fig. 2 is the utility model control circuit block diagram
Fig. 3, Fig. 4 are the utility model control circuit schematic diagram
Among the figure: 1 main switch is the porcelain vase base plate initiatively, 2 pull bars, and 3 adjust nut, 4 energy-stored springs, 5 push pipes, 6 bearing pins, 7 ground connection disconnecting links, 8 ground connection disconnecting link axles, 9 release levers, 10 auxiliary switch connecting rods, 11 deadlock levers, the little connecting lever 13 deadlock lever rotating shafts of 12 auxiliary switches, 14 motor coils, 15 deadlock levers and motor coil connecting axle, 16 fixed heads, 17 electrical cables, 18 control circuits, 19 telemechanisms, 20 switch pedestal, 21 bearing pins, 22 active porcelain vases, 23 passive porcelain vases, 24 ground connection disconnecting link clamping plate, 25 motor coil magnet, 26 drive links, 27 bearing pins, 28 ears connectors, 29 bearing pins, 30 bearing pins
One direct current voltage stabilizing circuit, two receive amplifying circuit, and three compare shaping circuit A, and four compare shaping circuit B, five the time-delay phase inverters, six phase inverters, seven oscillating circuits, eight with the gate pulse output circuit, nine outlet circuit, GK is the isolating switch auxiliary contact, DD is the little connecting lever contact of auxiliary switch
One end of pull bar 2 is installed on the main switch active porcelain vase base plate 1 by ears connector 28 and bearing pin 21, the other end of pull bar 2 adopts dog hole to be connected with an end of energy-stored spring 4, the other end of energy-stored spring 4 adopts hook pin to be connected with push pipe 5 left ends, adjusting nut 3 is sleeved on the pull bar 2, and by being threaded, push pipe 5 is sleeved on the energy-stored spring 4, the left end of push pipe 5 is connected by bearing pin 6 with an end of two Ω type ground connection disconnecting link clamping plate 24, the other end of two Ω type ground connection disconnecting link clamping plate 24 links to each other by bearing pin 30, ground connection disconnecting link 7 passes in the middle of two ground connection disconnecting link clamping plate 24, one end of ground connection disconnecting link 7 is connected by ground connection disconnecting link axle 8 with an end of release lever 9, one end of bar shaped release lever 9 and bar shaped deadlock lever 11 form locking, one end of auxiliary switch connecting rod 10 is connected by bearing pin 29 with release lever 9, the other end of auxiliary switch connecting rod 10 is connected by bearing pin 27 with the little connecting lever 12 of auxiliary switch, the little connecting lever 12 of auxiliary switch is contained on the fixed base plate 16, one end of deadlock lever 11 is sleeved on the motor coil connecting axle 15, motor coil 14 is installed on the fixed head 16, fixed head 16 is installed on the isolating switch base 20, the electrical cable 17 of being drawn by control circuit case 18 links to each other with motor coil 14, and control circuit is placed in the control circuit case 18 of cuboid.
Direct current regulation circuit one is referring to Fig. 3, by K switch, and resistance R Y
1, voltage-stabiliser tube WY
1, WY
2, fuse tube RD, resistance R Y
2For being connected in series, it makes 220V direct voltage output ± 12V direct current after step-down, voltage stabilizing, and its output also is connected to the capacitor C Y of series connection
1, CY
2Filter circuit.Receive amplifying circuit two by resistance R
1, R
2, R
3, capacitor C
1, C
2, triode T
1Form amplifying circuit, the electromagnetic signal that is received by reception antenna TX is through triode T
1After the amplification, through capacitor C
2Export direct-flow signal voltage more stably after the filtering, deliver to comparison shaping circuit A three, by resistance R
1, R
2, R
23, capacitor C
1, C
8, triode T
7Form another amplifying circuit, the electromagnetic signal that is received by antenna TX is through triode T
7After the amplification, through capacitor C
8Export direct-flow signal voltage stably after the filtering, deliver to comparison shaping circuit B four.The direct-flow signal voltage of delivering to comparison shaping circuit A three is through potentiometer DR
1Be added in operational amplifier IC
1In-phase input end angle 3, become behind the constant signal voltage by angle 6 outputs, deliver to time-delay phase inverter Wucan and see Fig. 4, by voltage-stabiliser tube WY
3, resistance R
8, R
9, R
10, R
11, capacitor C
3, triode T
2Form delay circuit.By resistance R
12, R
13, R
14, triode T
3And capacitor C
4Form phase inverter.Deliver to the signal voltage of time-delay phase inverter six, by diode D
3Clamped after after the time-delay paraphase the correct polar voltages of output deliver to diode D with gate pulse output circuit eight
4One end.By receive amplifying circuit two deliver to comparison shaping circuit B four referring to the direct-flow signal voltage of Fig. 3 through potentiometer DR
3Be added in operational amplifier IC
2Out-phase input angle 2, become behind the constant signal voltage by angle 6 outputs, deliver to phase inverter six referring to Fig. 4, by diode D
12Clamped after the signal voltage of exporting after the paraphase is delivered to the diode D with gate pulse output circuit eight
13One end.By the pulse signal that oscillating circuit seven produces referring to Fig. 4, the signal voltage of its output is delivered to the diode D with impulse output circuit eight
5An end.Diode D with gate pulse output circuit eight
4, D
5, D
13Form AND circuit, as diode D
4, D
13When oppositely ending, AND circuit is opened, and the signal voltage of oscillating circuit seven outputs is by diode D
5Receive triode T
6Base stage, amplify after the primary coil N of extra pulse transformer MB
1, sense secondary coil N
2, N
3, the signal of induction passes through diode D respectively
8, D
9Rectification output unidirectional pulse signal is delivered to outlet circuit nine controllable silicon KKG
1, KKG
2Controlled stage, auxiliary switch contact DD, motor coil HQ, controllable silicon KKG
1, KKG
2, isolating switch auxiliary contact GK is connected in series capacitor C
9Be attempted by controllable silicon KKG
1Cathode and KKG
2Anode between, diode D
16Be attempted by the two ends of motor coil HQ, motor coil is that control circuit exports at last.
The utility model course of work (referring to Fig. 1,3,4)
Under the normal condition, the isolated switch main disconnecting link is closing the position, and the ground connection disconnecting link is in a minute position.On the 275KV contact line feeder line normal working voltage is arranged.Receive the electromagnetic signal of coming from antenna TX, through triode T
1Detection is delivered to operational amplifier IC after amplifying
1In-phase input end angle 3 because T
1The positive potential of output is lower, makes IC
1The current potential that angle 3 ends obtain is a negative value, with angle 2 terminal potentials relatively after, IC
1Angle 6 end output voltages be electronegative potential-12V because diode D
3Clamped effect, make voltage-stabiliser tube WY
3End triode T
2Also end, thereby make triode T
6Conducting is because diode D
4Clamped effect, make triode T
6Base potential is very low, triode T
6End, do not have pulse output.Meanwhile, electromagnetic signal is through triode T
7Detection is input to operational amplifier IC after amplifying
2The current potential at out-phase end angle 2 makes IC for negative
2Angle 6 ends output positive potential be 12V, triode T
8Conducting is because diode D
13Clamped effect, can make T
6End.This moment D
4, D
13Be in negative or the door state.The mechanical transmission mechanism of ground connection disconnecting link automatic control equipment, the state of blocking mechanism are referring to Fig. 1, push pipe 5 and adjustment nut 3 are in close-fitting state, the right-hand member of energy-stored spring (4) is in the state of not stressing at 0, and the ground connection disconnecting link is in the mechanical latching state that the deadlock lever 11 by release lever 9 constitutes.
When the 275KV feeder line need have a power failure, by motor performance mechanism 19 the isolated switch main disconnecting link is disconnected, this moment, initiatively porcelain vase base plate 1 was moved energy-stored spring 4 to the A position referring to Fig. 1 by 0 through ears connector 28 drive pull bars 2, the little connecting lever 12 of auxiliary switch is connected auxiliary switch contact DD simultaneously, give the enough energy of closure deposit of ground connection disconnecting link, the isolated switch main disconnecting link disconnects, and isolating switch auxiliary contact GK closure is connected the control circuit power supply.After 275KV contact line feeder line had a power failure, the antenna TX that receives in the amplifying circuit did not have electromagnetic signal input, triode T
1Be in cut-off state, the output positive potential is 12V, delivers to the operational amplifier IC of comparison shaping circuit A
1The current potential at in-phase input end angle 3 be on the occasion of, angle 6 ends output positive potential 12V, the diode D of phase inverter when delivering to mix mud with water
3, diode D
3Be in cut-off state, by the DC power supply that direct current regulation circuit is supplied with, the process resistance R
8, R
9To capacitor C
3Capacitor C is worked as in charging
3When charging voltage reaches certain value, voltage-stabiliser tube WY
3Puncture, supply voltage passes through resistance R
8, voltage-stabiliser tube WY
3Be added to triode T
2On the base stage, make its conducting, thereby make triode T
3Be in cut-off state, triode T
3Base electrode be high potential+12V, deliver to diode D with the gate pulse output circuit
4, diode D
4Not conducting receives the antenna TX no signal input in the amplifying circuit, triode T
7Be in cut-off state, the output positive potential is 12V, delivers to the operational amplifier IC of comparison shaping circuit B
2Out-phase end angle 2, angle 6 ends output electronegative potential-12V delivers to the diode D in the phase inverter
12, because second tube sheet D
12Clamped effect, make triode T
8Base stage be negative potential, triode T
8Be in cut-off state, its collector electrode output high potential is delivered to the diode D with the gate pulse output circuit
13, diode D
13Be in reverse blocking state, AND circuit is opened, and the pulse signal of exporting from oscillating circuit passes through diode D
5Deliver to triode T
6Base stage is passed through the primary coil N of pulse transformer MB after amplifying
1Sense secondary coil N
2, N, and deliver to output circuit controllable silicon KKG respectively
1, KKG
2The control utmost point, make its conducting, motor coil HQ is subjected to electricity back action, and the right-hand member of deadlock lever 11 is picked up, left end falls, release lever 9 is deviate from deadlock lever 11, and at this moment, the ground connection disconnecting link loses mechanical latching, under the effect of energy-stored spring 4 and auto-closing, after the ground connection disconnecting link closure, auxiliary switch contact DD disconnects, and cuts off motor coil HQ and is subjected to power supply.
When 275KV feeder line contact line need send, during by telemechanism 19 control isolated switch main disconnecting links closures, under the drive of active porcelain vase base plate 1, by ears connector 28 pull bar 2 is promoted left, promote push pipe 5 by the adjustment nut on the pull bar 23, with ground connection disconnecting link 7 separately through ground connection disconnecting link clamping plate 24.At this moment, the isolated switch main disconnecting link is closing the position, and the ground connection disconnecting link is in a minute position, and the formation mechanical latching, and the adjustment nut 3 that is installed on the pull bar 2 is in close-fitting state with push pipe 5, and energy-stored spring 4 is in not energy storage state.
The electromagnetic signal that receives the antenna TX in the amplifying circuit two is delivered to electroscopic device, can automatic electrical verification.
Claims (1)
1, a kind of isolating switch ground connection disconnecting link automatic control equipment is characterized in that: this device comprises by pull bar, the energy-stored spring that is attached thereto, is sleeved on the push pipe on the energy-stored spring and is sleeved on the mechanical transmission mechanism that the adjustment nut on the pull bar is formed; The blocking mechanism of forming by release lever, deadlock lever, deadlock lever rotating shaft, deadlock lever and motor coil connecting axle, auxiliary switch connecting rod, the little connecting lever of auxiliary switch and bearing pin; By receiving amplifying circuit, linking to each other step by step with gate pulse output circuit, outlet circuit, relatively shaping circuit A links to each other with the time-delay phase inverter, relatively shaping circuit B links to each other with phase inverter, and be connected to receive amplifying circuit and with the gate pulse output circuit between, be connected on and the oscillating circuit of the input of gate pulse output circuit and the control circuit of DC power supply circuit composition; One end of deadlock lever adopts impact type to be connected with the motor coil of control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95212389 CN2259020Y (en) | 1995-06-06 | 1995-06-06 | Automatic controller for earthing knife of isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95212389 CN2259020Y (en) | 1995-06-06 | 1995-06-06 | Automatic controller for earthing knife of isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2259020Y true CN2259020Y (en) | 1997-08-06 |
Family
ID=33862591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95212389 Expired - Fee Related CN2259020Y (en) | 1995-06-06 | 1995-06-06 | Automatic controller for earthing knife of isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2259020Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169707A (en) * | 2015-03-19 | 2016-11-30 | 沈宇杰 | A kind of detection device for 110kV substation grounding disconnecting link |
| CN107146731A (en) * | 2017-07-27 | 2017-09-08 | 赵雅琴 | Safety type power plug-in strip |
-
1995
- 1995-06-06 CN CN 95212389 patent/CN2259020Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169707A (en) * | 2015-03-19 | 2016-11-30 | 沈宇杰 | A kind of detection device for 110kV substation grounding disconnecting link |
| CN106169707B (en) * | 2015-03-19 | 2017-11-24 | 南京涵曦月自动化科技有限公司 | A kind of detection means for 110kV substation grounding disconnecting links |
| CN107146731A (en) * | 2017-07-27 | 2017-09-08 | 赵雅琴 | Safety type power plug-in strip |
| CN107146731B (en) * | 2017-07-27 | 2019-04-26 | 孙健春 | Safety type power plug-in strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |