CN2473730Y - Artificial switch - Google Patents
Artificial switch Download PDFInfo
- Publication number
- CN2473730Y CN2473730Y CN 01223778 CN01223778U CN2473730Y CN 2473730 Y CN2473730 Y CN 2473730Y CN 01223778 CN01223778 CN 01223778 CN 01223778 U CN01223778 U CN 01223778U CN 2473730 Y CN2473730 Y CN 2473730Y
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- Prior art keywords
- relay
- circuit
- stitch
- trip
- ping
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Abstract
The utility model discloses a simulating switch, comprising a closing circuit, a trip circuit, a main circuit and an output connection. The secondary plug in every circuit is connected with a relay and contacts of the relay respectively, and the foreign output passes the secondary plug of the output connection. The utility model is characterized in that the operation is simple, safe and reliable, the power is low, the action number of the switch can be reduced, the service life can be improved, and the utility model is suitable for every power plant and substation.
Description
The utility model relates to a kind of handcart-type switch of being made up of relay, relates to a kind of Artificial switch specifically.
At present, the handcart-type switch of each switch manufacturer production all matches with switch cubicle.The mechanism of car that advances that handcart-type switch then is designed to primary power source side contact, load side contact, switch contact, switch motion mechanism, auxiliary contact, switch control circuit, secondary plug and a handcart partly constitutes.It is connected by switch contact with the load side contact by primary power source side contact, and switch motion mechanism is the connecting and disconnecting of control switch contact then; Auxiliary contact is connected with switch motion mechanism, the state of reflection switch; Switch control circuit is connected with the external circuit by the secondary plug seat of secondary plug through switch cubicle with auxiliary contact, accepts outside to close, trip command control switch actuating mechanism carries out corresponding action, again auxiliary contact is transferred to external system simultaneously.Switch motion mechanism adopts electromagnetic type mechanism, utilizes the combined floodgate solenoid to attract the combined floodgate iron core to finish the combined floodgate task.The combined floodgate solenoid by the power supply of external dedicated electrical source of power, is subjected to the control in the switch control circuit by secondary plug; Closing contactor and tripping operation solenoid are included in the switch control circuit, by the control power supply power supply of secondary plug by external dedicated, are responsible for accepting the outside indication of closing, trip.
Handcart-type switch has three kinds of positions in switch cubicle:
The one, " work " position.When this position, the primary power source side contact of handcart-type switch and load side contact respectively with switch cubicle in primary power source side contact, load side contact closely peg graft, secondary plug and secondary plug seat are closely pegged graft, be the connecting and disconnecting of controllable switch contact by switch control circuit this moment, the control external load; The 2nd, " test " position.When this position, primary power source side contact, load side contact in the primary power source side contact of handcart-type switch and load side contact and the switch cubicle all break away from, do not contact mutually even isolated, secondary plug and secondary plug seat are closely pegged graft, be the connecting and disconnecting of control switch contact by switch control circuit this moment, and irrelevant with the primary circuit, finish self close, trip avoidance function, irrelevant with external load; The 3rd, " maintenance " position.When this position, primary power source side contact, load side contact in the primary power source side contact of handcart-type switch and load side contact and the switch cubicle all break away from, and secondary plug and secondary plug seat also break away from mutually, do not split to close and carry out any control.There is the problem of following several aspects in above-mentioned handcart-type switch in the power plant or during the actual transmission test of protecting, interlocking of transformer station:
1, when transmission test, if mistake is sent into switch " work " position, then can the person's of causing injures and deaths and damage equipment, such accident has record.
2, when doing transmission test, must after finishing, switch maintenance can carry out, cause the maintenance duration anxiety.
3, switch has just been finished maintenance; for doing the transmission test of protection, interlocking; then make switch want frequent movement tens times; (do once will move more than 20 time such as the water supply pump protection; following several conditions of boiler MFT will make switch do tens times) shortened useful life of switch greatly; thereby a lot of power plant switch maintenance personnel say that just having overhauled finishes has arrived the time between overhauls(TBO).
4, existing power plant is in order to reduce the action frequency of switch, takes the short circuit contact, forces manually to put point, sees that method such as outlet relay carries out.Both inconvenient, also not directly perceived, waste of manpower again, thereby also prolonged the time of protection transmission, the result is very inaccurate yet, and can not realize its function fully.In case carelessness is forgotten and is recovered interim measure (shorting stub, pressure are manually put a little), will bring harm to the later safe operation of unit.
5, in the unit maintenance later stage, for protection, the interlocking transmission test of doing a certain equipment, the operations staff must all give as security back the work ticket relevant with this equipment, and service work suspends.Both prolonged the repair time like this, increased operations staff's workload again,, then very likely had an accident in case the carelessness work ticket is not given as security back by omission.
6, when unit normally moves; an if overhaul of the equipments (as an induced draft fan trouble hunting); back DCS (BMS) system that has a power failure may can not get its stoppage in transit signal; the tripping operation if another equipment also breaks down; relevant protection is with tripping; if (two induced draft fan full cut-off tripping operations, MFT is with tripping) might cause serious accident.
The purpose of this utility model is for solving the problem in the above-mentioned technology, under the preceding topic that guarantees safety, prolong the useful life of switch as much as possible and cut down the consumption of energy, action overall process by the complete simulation handcart-type switch, move, and send corresponding switching value according to the closing of corresponding system, trip command to each required system.
For achieving the above object, technical solution of the present utility model is finished like this: a kind of Artificial switch, it is made up of closing circuit, trip(ping) circuit, major loop and output contact, wherein connects a pair of normally closed contact ZJ of major loop relay ZJ in the closing circuit from No. 1 stitch wiring of secondary plug
1Connect relay HJ and be connected on No. 2 stitch of secondary plug, and by the two ends parallel resistance R of relay HJ
1The a pair of normal opened contact ZJ that connects major loop relay ZJ in the trip(ping) circuit from No. 3 stitch wiring of secondary plug
2, the end that connection relay TJ is connected to the relay HJ in the closing circuit is connected on No. 2 stitch of secondary plug, by the two ends parallel resistance R of relay TJ
2Connect the normal opened contact HJ of closing circuit repeat circuit HJ and the normally closed contact TJ of trip(ping) circuit repeat circuit TJ is in series from No. 17 stitch wiring of secondary plug in the major loop, be connected on No. 25 stitch of secondary plug by connecting relay ZJ, wherein a pair of normal opened contact ZJ of normal opened contact HJ and relay ZJ
3Be in parallel; Output contact is by the normal opened contact ZJ of major loop repeat circuit ZJ
4Two ends be connected on 5 and No. 6 stitch normally closed contact ZJ respectively
5Two ends be connected to normal opened contact ZJ on 7 and No. 8 stitch respectively
6Two ends be connected to respectively on 9 and No. 10 stitch, the two ends of normally closed contact ZJ7 are connected to respectively on 11 and No. 12 stitch, externally export by secondary plug.
Artificial switch has following characteristics:
1, the handcart-type switch of each switch manufacturer production of the design of Artificial switch energy complete simulation can the various types of handcart-type switch of emulation by secondary plug and the wiring of changing different model.
2, use is easy to operate, as long as the secondary plug of former switch is taken off, inserts this Artificial switch, just can carry out transmission test.
3, safe and reliable; as long as operation direct current, the combined floodgate direct current of switch are dropped into; insert this Artificial switch and can carry out transmission test, service work ticket mechanical, electric, protection still can carry out as usual, service work is at all unaffected, and definitely guarantees the safety of service work.
4, can prolong the useful life of switch, use Artificial switch to carry out transmission test, after can be implemented in overhaul of the equipments, to switch only once close, trip test is (except the anti-jump loop transmission, this transmission relate to switch in the parameter matching problem of relevant elements), can drop into safe operation, significantly reduce the action frequency of switch, prolong the useful life of switch.
5, avoid protecting tripping, the switch of the alternative faulty equipment of Artificial switch is sent its stoppage in transit signal to relevant system, has thoroughly solved the problem of relevant protection tripping.
6, energy savings, the overall work electric current of Artificial switch is less than 100mA (the strengthened operating current that specific (special) requirements is arranged).
7, reduce workload, use Artificial switch to carry out transmission test, do not need multi-pass operation switch handcart, also do not need to give as security back work ticket, therefore significantly reduced the relevant personnel's workload.
Below in conjunction with accompanying drawing embodiment to this novel being further described.
Fig. 1 is the Artificial switch electrical schematic diagram.
Fig. 2-11 is other embodiment of Fig. 1.
It is made up of closing circuit, trip(ping) circuit, major loop and output contact by Artificial switch shown in Figure 1.Wherein said closing circuit is wiring from No. 1 stitch of secondary plug, be connected to an end of relay HJ coil by a pair of normally closed contact ZJ that connects major loop repeat circuit ZJ, and the other end of coil connects on No. 2 stitch of secondary plug, by the two ends parallel resistance R of relay HJ coil
1Trip(ping) circuit is wiring from No. 3 stitch of secondary plug, by connecting a pair of normal opened contact ZJ of major loop repeat circuit ZJ
2To an end of relay TJ coil, the other end of coil then is in parallel with the other end of closing circuit repeat circuit HJ coil and is connected on No. 2 stitch of secondary plug, by the two ends parallel resistance R of relay TJ coil
2Major loop one is terminated on No. 17 stitch of secondary plug, normal opened contact HJ by connecting closing circuit repeat circuit HJ and the normally closed contact TJ of trip(ping) circuit repeat circuit TJ are in series and succeed an end of electrical equipment ZJ coil, the other end of coil then is connected on No. 25 stitch of secondary plug, wherein a pair of back contact ZJ of the normal opened contact HJ of closing circuit repeat circuit HJ and relay ZJ
3Be in parallel; Output contact is the normal opened contact ZJ by major loop repeat circuit ZJ
4Two ends be connected on 5 and No. 6 stitch normally closed contact ZJ respectively
5Two ends be connected on 7 and No. 8 stitch normal opened contact ZJ respectively
6Two ends be connected on 9 and No. 10 stitch normally closed contact ZJ respectively
7Two ends be connected to respectively on 11 and No. 12 stitch, be connected to secondary plug by each contact and be transferred to external system.After the secondary plug seat of the secondary plug of Artificial switch and switch cubicle is closely pegged graft, just can carry out relevant transmission test, because of primary circuit parts such as the one-time contact of having cancelled handcart-type switch and switch contacts, so have nothing to do with external load.
Embodiment shown in Figure 2 has done corresponding variation to closing circuit among Fig. 1 and the connected mode in the trip(ping) circuit, promptly cancel the mode that is connected in parallel of the trip(ping) circuit repeat circuit TJ coil other end and the closing circuit repeat circuit HJ coil other end, the other end of trip(ping) circuit repeat circuit TJ coil directly can be connected on No. 4 stitch of secondary plug, and major loop and output contact form are constant, still can finish this novel purpose effect.
Fig. 3 shows in closing circuit and trip(ping) circuit, can remove relay HJ and the parallel resistor R of TJ two ends institute simultaneously
1And R
2Also can make wherein any relay two ends parallel resistor R
1Or R
2, all do not influence allomeric function.
Fig. 4 shows on the basis of Fig. 1 integral form, only the version of major loop repeat circuit has been done corresponding variation, and promptly described relay ZJ at least can be in parallel more than 2, and its output contact also should correspondingly increase.
Fig. 5 shows in the closing circuit from No. 1 stitch wiring of secondary plug and connects major loop repeat circuit nZJ normally closed contact nZJ
1Be connected on No. 2 stitch of secondary plug by connecting relay HJ coil, by the two ends parallel resistance R of relay HJ
1, No. 3 stitch wiring from secondary plug in the trip(ping) circuit connect nZJ
2Normal opened contact is connected on No. 4 stitch of secondary plug by connecting relay TJ coil, by relay TJ two ends parallel resistance R
2, wiring from No. 17 stitch of secondary plug in the major loop is by connecting the normal opened contact HJ of closing circuit repeat circuit HJ
1Normally closed contact TJ with trip(ping) circuit repeat circuit TJ
1After the series connection, succeed electrical equipment ZJ coil and be connected on No. 25 stitch of secondary plug, wherein normal opened contact HJ
1With normally closed contact ZJ
1Parallel connection is by relay ZJ coil two ends some relay ZJ-nZJ in parallel, wherein by the normally closed contact ZJ of relay nZJ series connection ZJ
2, and on output contact, increase corresponding output contact.
Fig. 6 is illustrated on the basis of Fig. 1, has cancelled the major loop part, and has adopted the twin coil two-position relay.It is mainly by closing circuit, and trip(ping) circuit and output contact are formed.Closing circuit wiring from No. 1 stitch of secondary plug connects the normally closed contact SWJ of two-position relay
1,, be connected on No. 2 stitch of secondary plug, by twin coil two-position relay SWJ/HQ coil two ends parallel resistance R by connecting two-position relay SWJ/HQ
1, trip(ping) circuit wiring from No. 3 stitch of secondary plug is through the normal opened contact SWJ of two-position relay
2, by connecting twin coil two-position relay SWJ/TQ, the other end that is connected to two-position relay SWJ/HQ in the closing circuit is connected on No. 2 stitch of secondary plug, by the two ends parallel resistance R of twin coil two-position relay SWJ/TQ
2, output contact is by inserting two-position relay normal opened contact SWJ on 5 and No. 6 stitch of secondary plug
3, insert the normally closed contact SWJ of double relays from 7 and No. 8 stitch of secondary plug
4, insert two-position relay normal opened contact SWJ from 9 and No. 10 stitch of secondary plug
5, insert the normally closed contact of two-position relay from 11 and No. 12 stitch of secondary plug, externally export by secondary plug respectively.The characteristics of two-position relay are moved after electric and are carried out mechanical self-sustaining (even this coil losing electricity, its contact does not return yet) when one of them coil gets exactly, have only when another coil wherein get electric after relay once more action connection point just can return.
Fig. 7 shows the version that adopts the twin coil two-position relay equally, it has only done corresponding variation to accompanying drawing 6, directly insert by the double-wound relay SWJ/TQ other end in the trip(ping) circuit on No. 4 stitch of secondary plug, cancelled the double-wound relay SWJ/TQ other end No. 2 stitch that insert secondary plug in parallel, other integral form is constant.
The embodiment that Fig. 8 provides also is on the basis by Fig. 7, only closing circuit and trip(ping) circuit have been done corresponding variation, it by secondary plug 1 with No. 2 stitch with 3 with number stitch on the two-position relay SWJ/HQW of twin coil that is connected respectively directly be connected with SWJ/TQ with secondary plug, cancel its two ends parallel resistor R
1And R
2, other integral form remains unchanged.Also can cancel or keep a wherein double relay parallel resistor arbitrarily.
The embodiment that Fig. 9 provides on the basis by Fig. 6, has only done corresponding variation to closing circuit and trip(ping) circuit equally, and it is by wiring on No. 1 stitch of secondary plug, by the normally closed contact 1SWJ of two-position relay
1, by connecting 2 pin that two-position relay 1SWJ/HQ is connected to secondary plug, and go up some two-position relay nSWJ/HQ in parallel by two-position relay 1SWJ/HQ, and resistance R
1, wiring from No. 3 stitch of secondary plug is by the normal opened contact 1SWJ of two-position relay
2, the two-position relay 1SWJ other end that is connected in closing circuit by connection two-position relay 1SWJ/TQ is connected on No. 2 stitch of secondary plug, and goes up some two-position relay nSWJ/TQ in parallel and resistance R by two-position relay 1SWJ/TQ
2, on output contact, externally export with the contact that increases respective numbers.
Above-mentioned secondary plug is selected except 25 pins, also can corresponding selection 16 pin, 24 pins, 48 pins, 58 pins, all can finish above-mentioned purpose.
Above-described version only is that subordinate those skilled in the art person can also can make corresponding variation and modification with reference to general plotting to the specifying of this novel embodiment.
Claims (9)
1, Artificial switch comprises closing circuit, trip(ping) circuit, major loop and output contact composition, it is characterized in that, connects a pair of normally closed contact ZJ of major loop relay ZJ in the described closing circuit from No. 1 stitch wiring of secondary plug
1Connect relay HJ and be connected on No. 2 stitch of secondary plug, and by the two ends parallel resistance R of relay HJ
1The a pair of normal opened contact ZJ that connects major loop relay ZJ in the trip(ping) circuit from No. 3 stitch wiring of secondary plug
2, the end that connection relay TJ is connected to the relay HJ in the closing circuit is connected on No. 2 stitch of secondary plug, by the two ends parallel resistance R of relay TJ
2No. 17 stitch wiring from secondary plug in the major loop connect the normal opened contact HJ of closing circuit repeat circuit HJ and the normally closed contact TJ of trip(ping) circuit repeat circuit TJ
1Be in series, be connected on No. 25 stitch of secondary plug by connecting relay ZJ, wherein a pair of normal opened contact ZJ of normal opened contact HJ and relay ZJ
3Be in parallel; Output contact is by the normal opened contact ZJ of major loop repeat circuit ZJ
4Two ends be connected on 5 and No. 6 stitch normally closed contact ZJ respectively
5Two ends be connected on 7 and No. 8 stitch normal opened contact ZJ respectively
6Two ends be connected on 9 and No. 10 stitch normally closed contact ZJ respectively
7Two ends be connected to respectively on 11 and No. 13 stitch, externally export by secondary plug.
By the described Artificial switch of claim 1, it is characterized in that 2, parallel form is adopted in described closing circuit and trip(ping) circuit, also the other end wiring of the relay TJ in the trip(ping) circuit can be directly connected on No. 4 stitch of secondary plug.
By the described Artificial switch of claim 1, it is characterized in that 3, any relay HJ in described closing circuit and the trip(ping) circuit and TJ go up parallel resistance R
1Or R
2
4, by the described Artificial switch of claim 1, it is characterized in that, can also parallel connection in the described major loop be at least the relay nZJ more than 2, the also corresponding increase of its output contact.
5, by the described Artificial switch of claim 1, it is characterized in that, in the described major loop by wiring on No. 17 stitch, by connecting closing circuit relay HJ normal opened contact HJ
1Normally closed contact TJ with trip(ping) circuit repeat circuit TJ
1Series connection, and connect the relay ZJ-nZJ be in parallel is wherein by the normal opened contact ZJ of the end series connection ZJ of relay nZJ
2, and normal opened contact HJ
1With normally closed contact ZJ
1Parallel connection wherein is connected to normally closed contact nZJ in the wiring of No. 1 stitch in closing circuit and the trip(ping) circuit and No. 3 stitch
1With normal opened contact nZJ
2
6, by the described Artificial switch of claim 1, it is characterized in that, relay in described closing circuit and the trip(ping) circuit is to have adopted two-position relay SWJ/HQ and SWJ/TQ, wherein the other end of trip(ping) circuit relay SWJ/TQ one end and closing circuit relay SWJ/HQ is connected in parallel, and inserts normally-open normally-close contact SWJ respectively on secondary plug No. 5 stitch to 12 stitch in major loop
2-SWJ
6
7, by the described Artificial switch of claim 1, it is characterized in that the wiring of the relay SWJ/TQ in the described trip(ping) circuit can directly be connected with No. 4 stitch of secondary plug.
8, by the described Artificial switch of claim 1, it is characterized in that, on the relay SWJ/HQ and SWJ/TQ in described closing circuit and the trip(ping) circuit, parallel resistance not, also can be arbitrarily a relay parallel resistance wherein.
9, by the described Artificial switch of claim 1, it is characterized in that, can distinguish some two-position relay 1SWJ/HQ-nSWJ/HQ in parallel and 1SWJ/TQ-nSWJ/TQ in described closing circuit and the trip(ping) circuit.Wherein by parallel resistance R on the relay in parallel in each loop
1And R
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01223778 CN2473730Y (en) | 2001-04-29 | 2001-04-29 | Artificial switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01223778 CN2473730Y (en) | 2001-04-29 | 2001-04-29 | Artificial switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473730Y true CN2473730Y (en) | 2002-01-23 |
Family
ID=33640269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01223778 Expired - Fee Related CN2473730Y (en) | 2001-04-29 | 2001-04-29 | Artificial switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2473730Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087527A (en) * | 2010-11-25 | 2011-06-08 | 河南省电力公司洛阳供电公司 | Backup auto-switching logic testing method for checking changeover manner of power transmission line |
-
2001
- 2001-04-29 CN CN 01223778 patent/CN2473730Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087527A (en) * | 2010-11-25 | 2011-06-08 | 河南省电力公司洛阳供电公司 | Backup auto-switching logic testing method for checking changeover manner of power transmission line |
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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 |