CN207250368U - A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear - Google Patents
A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear Download PDFInfo
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- CN207250368U CN207250368U CN201721205443.XU CN201721205443U CN207250368U CN 207250368 U CN207250368 U CN 207250368U CN 201721205443 U CN201721205443 U CN 201721205443U CN 207250368 U CN207250368 U CN 207250368U
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Abstract
It the utility model is related to a kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear, on switchgear, including electronic earthing knife-switch controller and interlock circuit, interlock circuit includes the rear doors push-style travel switch being in series, bent-arm travel switch, circuit breaker cart testing position auxiliary switch, circuit breaker cart open position auxiliary switch and electrification display locking Node Switch, the earthing switch baffle that can slide up and down is equipped between the earthing knife-switch handle hole of switchgear and electrically swivel axis, earthing switch baffle is equipped with handle portion, handle portion passes through earthing knife-switch handle hole, trigger unit is formed on the bottom of earthing switch baffle, the perpendicular of trigger unit is equipped with card slot, the contact of bent-arm travel switch is caught in card slot.Compared with prior art, the utility model is in the case where meeting that electronic earthing knife-switch is easy to operate, it is ensured that the security of electronic earthing knife-switch on/off switch operation, reduce causes the probability of accident because of electronic earthing knife-switch intellectualized operation.
Description
Technical field
Electric switch technical field is the utility model is related to, more particularly, to a kind of electronic earthing knife-switch interlocking dress of Medium Voltage Switchgear
Put.
Background technology
With the development of national grid and the raising of studies in China switchgear technology, the electronic earthing knife-switch of switchgear has begun to
Network system is applied in station.Safe operation of the electronic earthing knife-switch in switchgear, which has become, to be needed to pay close attention at present and what is solved asks
Topic.If not interlocking electronic earthing knife-switch, once rear door of switch cabinet is opened, switch cabinet electrified or breaker handcart of switch cabinet are not at
Open position is tested, other people are before cabinet or remote-control operation earthing knife-switch will cause great security risk.If can not and
Shi Faxian, had not both met five anti-interlock requirement of switchgear, was easy to cause the accident injured people and got an electric shock yet.
Utility model content
The purpose of this utility model is exactly to provide a kind of Medium voltage switch or circuit breaker to overcome the problems of the above-mentioned prior art
The electronic earthing knife-switch interlock of cabinet, in the case where meeting that electronic earthing knife-switch is easy to operate, it is ensured that electronic earthing knife-switch on/off switch operation
Security, reduce causes the probability of accident because of electronic earthing knife-switch intellectualized operation.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear, on switchgear, including electronic earthing knife-switch controller and interlocking
Circuit, one end of the interlocking signal end connection interlock circuit of the electronic earthing knife-switch controller, another termination of the interlock circuit
Ground, the rear doors push-style travel switch, bent-arm travel switch, circuit breaker cart testing position that interlock circuit includes being in series are auxiliary
Help switch, circuit breaker cart open position auxiliary switch and electrification display locking Node Switch, the earthing knife-switch handle hole of switchgear
The earthing switch baffle that can slide up and down is equipped between electrically swivel axis, the middle part of the earthing switch baffle is equipped with level
The handle portion of outside bending, the handle portion pass through earthing knife-switch handle hole, after the inside bending of bottom level of earthing switch baffle again
Bending straight down, forms trigger unit, and the perpendicular of the trigger unit is equipped with card slot, and the bent-arm travel switch is located at
The electrically lower section of swivel axis, the contact of bent-arm travel switch are caught in card slot, prepare electronic earthing knife-switch controller remote operation
Before earthing knife-switch, earthing switch baffle is above carried using handle portion makes earthing switch baffle block earthing knife-switch handle hole, bent-arm travel switch
Contact moved with earthing switch baffle and close bent-arm travel switch, and rear doors push-style travel switch, breaker hand
Car testing position auxiliary switch, circuit breaker cart open position auxiliary switch and electrification display locking Node Switch close at the same time
Close.
The limiting plate to extend internally is equipped with the vertical edge of the earthing switch baffle, the limiting plate is kept off with earthing switch
Plate is perpendicular, and limiting plate is equipped with the U-shaped limiting slot of opening upwards, electronic when earthing switch baffle blocks earthing knife-switch handle hole
Cam limit in earthing knife-switch shaft rotates in U-shaped limiting slot.
The switchgear is equipped with secondary locking component, and the secondary locking component includes rotation seat, rotational pin and locking
Bar, the rotation seat is arranged on the outer wall of switchgear, and is located at earthing knife-switch handle hole side, and one end of the locking bar passes through rotation
Pin is hinged with rotation seat, and the other end of locking bar is equipped with lock hole, when earthing switch baffle blocks earthing knife-switch handle hole, locking bar
Rotation makes handle portion through lock hole and spacing in lock hole.
The handle portion is equipped with lockhole.
The bent-arm travel switch is arranged on the lower section of electrically swivel axis by travel switch mounting plate.
Compared with prior art, the utility model has the following advantages：
1st, by setting bent-arm travel switch, and doors push-style travel switch, circuit breaker cart testing position after cooperation
Auxiliary switch, circuit breaker cart open position auxiliary switch and electrification display locking Node Switch, are meeting electronic earthing knife-switch behaviour
In the case of making easily, it is ensured that the security of electronic earthing knife-switch on/off switch operation, reduces because electronic earthing knife-switch intellectualized operation
And cause the probability of accident.
2nd, before preparing electronic earthing knife-switch controller remote operation earthing knife-switch, earthing switch baffle is above carried using handle portion opens ground connection
Close baffle and block earthing knife-switch handle hole, remote control conjunction/point earthing knife-switch can be carried out afterwards, be effectively prevented from forgetting to extract handle and lead
The situation of people is accidentally injured in handle bounce-back during cause remote control.
3rd, earthing switch baffle is equipped with the limiting plate with U-shaped limiting slot, and electrically the cam limit on swivel axis is in U-shaped limit
Rotated in the groove of position, when may further ensure that remote control, electrically swivel axis is rotated and will not deviated, and job stability is more preferably.
The 4th, secondary locking component is set, further the position of fixed handle portion, improves device security.
5th, install convenient, small, low manufacture cost, application easy to spread are changed to original structure.
Brief description of the drawings
Fig. 1 is the secondary principle figure of electronic earthing knife-switch circuit interlocking；
Fig. 2 is the electronic earthing knife-switch circuit interlocking two of the electronic earthing knife-switch interlock of the Medium Voltage Switchgear with bent-arm travel switch
Secondary schematic diagram；
Fig. 3 is bent-arm travel switch in the electronic earthing knife-switch interlock of Medium Voltage Switchgear with showing on the right side of earthing switch baffle
It is intended to；
Fig. 4 is bent-arm travel switch in the electronic earthing knife-switch interlock of Medium Voltage Switchgear with showing on the left of earthing switch baffle
It is intended to；
Fig. 5 is earthing switch baffle arrangement schematic diagram in the electronic earthing knife-switch interlock of Medium Voltage Switchgear；
Fig. 6 is the structure diagram of secondary locking component in the electronic earthing knife-switch interlock of Medium Voltage Switchgear.
In figure, JC is electronic earthing knife-switch controller, and JZ is electronic earthing knife-switch auxiliary switch, and LX1 is to put a push-style travel switch, LX2
For bent-arm travel switch, S8 is circuit breaker cart testing position auxiliary switch, and DL opens for circuit breaker cart open position auxiliary
Close, K1 is electrification display locking Node Switch, and DK1 is air switch, and for a distant place, change-over switch, DXN are powered aobvious to 1QK on the spot
Showing device；
101 be switchgear, and 102 be earthing knife-switch handle hole, and 103 be electrically swivel axis, and 104 be earthing switch baffle, and 105 are
Handle portion, 106 be trigger unit, and 107 be card slot, and 108 be contact, and 109 be limiting plate, and 110 be U-shaped limiting slot, and 111 be cam,
112 be rotation seat, and 113 be rotational pin, and 114 be locking bar, and 115 be lock hole, and 116 be lockhole, and 117 install for travel switch
Plate, 118 be remote control, and 119 be backstage host computer.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical solution, give detailed embodiment and specific operating process, but the guarantor of the utility model
Shield scope is not limited to following embodiments.
The operation principle of electronic earthing knife-switch interlock circuit：
The interlocking that electronic earthing knife-switch by the controller of electronic earthing knife-switch operate electronic earthing knife-switch, after 101 cabinet of switchgear
Door is closed, and circuit breaker cart is in testing position and open position, when one time busbar is not charged, can operate electronic earthing knife-switch.
Specific implementation is by the way that in 101 cabinet back door mount point push-style travel switch LX1 of switchgear, when back door is closed, point is hit
Formula travel switch LX1 is changed into normally closed point from the opened point of script；Then handcart is shaken out to testing position, circuit breaker cart experiment
Location aided rebroadcast switch S8 is closed and is closed circuit breaker cart open position auxiliary switch DL, and circuit breaker cart is in separating brake shape
State；By electrification display locking Node Switch K1 come locking, during a busbar out of power, electrification display locking Node Switch K1
Opened point be changed into normally closed point, then interlocking signal is effective, can be closed a floodgate with the electronic earthing knife-switch of straighforward operation, the operation such as separating brake.
The secondary principle figure of electronic earthing knife-switch circuit interlocking is as shown in Figure 1.If only simply accomplish above-mentioned interlocking, operation electricity
The safety of dynamic earthing knife-switch can ensure substantially, but have ignored a phenomenon, on-site maintenance service personnel in local operation earthing knife-switch,
Handle is inserted into earthing knife-switch handle hole 102 and has forgotten to extract, and when backstage remote-control operation earthing knife-switch, handle follows electrically 103 turns of swivel axis
Move so as to which out of hand rebound away is easy to injure people.
Therefore in this case, the utility model proposes one kind earthing knife-switch is installed on using bent-arm travel switch LX2
The electronic earthing knife-switch interlock of Medium Voltage Switchgear of the interlocking of electronic earthing knife-switch is participated at handle hole 102, as Figure 2-Figure 5, in this
The electronic earthing knife-switch interlock of the cabinet that compresses switch is arranged on switchgear 101, including electronic earthing knife-switch controller JC and interlock circuit, electrically
One end of the interlocking signal end connection interlock circuit of knife controller JC, the other end ground connection of interlock circuit, interlock circuit include phase
It is the rear doors push-style travel switch LX1 of series connection, bent-arm travel switch LX2, circuit breaker cart testing position auxiliary switch S8, disconnected
Road device handcart open position auxiliary switch DL and electrification display locking Node Switch K1, the earthing knife-switch handle hole 102 of switchgear 101
The earthing switch baffle 104 that can slide up and down is equipped between electrically swivel axis 103, the middle part of earthing switch baffle 104 is set
There is the handle portion 105 of horizontally outward bending, handle portion 105 passes through earthing knife-switch handle hole 102, the bottom water of earthing switch baffle 104
Bending straight down again after flat inside bending, forms trigger unit 106, and the perpendicular of trigger unit 106 is equipped with card slot 107, turns
Arm-type travel switch LX2 is arranged on the lower section of electrically swivel axis 103 by travel switch mounting plate 117, and install convenient, ties original
Structure change is small, and the contact 108 of bent-arm travel switch LX2 is caught in card slot 107, prepares electronic earthing knife-switch controller JC remote operations
Before earthing knife-switch, above carrying earthing switch baffle 104 using handle portion 105 makes earthing switch baffle 104 block earthing knife-switch handle hole 102, turns
The contact 108 of arm-type travel switch LX2 moves with earthing switch baffle 104 and closes bent-arm travel switch LX2, and back door
Point push-style travel switch LX1, circuit breaker cart testing position auxiliary switch S8, circuit breaker cart open position auxiliary switch DL and
Electrification display locking Node Switch K1 is closed at, and can just be carried out remote control conjunction/point earthing knife-switch at this time, is effectively prevented from forgetting
The situation of people is accidentally injured in handle bounce-back when note extracts handle and causes remote control.
The first pin of electronic earthing knife-switch controller JC is connected by an air switch DK1 respectively with second pin in Fig. 1,2
Power supply KM, the 3rd pin and the 4th pin connect electronic earthing knife-switch auxiliary switch JZ, and the 5th pin and the 6th pin are connected on backstage
Position machine 119, for by failure alarm signal be transmitted to backstage, the 9th-ten five pin be followed successively by 0V common ports, a distant place with regard to ground terminal,
Interlocking signal end, remote control close earthing knife-switch end, remote control point earthing knife-switch end, close earthing knife-switch end on the spot and divide earthing knife-switch end, 0V common ports, a distant place on the spot
With regard to connecting distant place change-over switch 1QK on the spot between ground terminal, earthing knife-switch end is closed in remote control, a remote control point earthing knife-switch end connects remote control respectively
118, earthing knife-switch end is closed on the spot and a point earthing knife-switch end connects electronic earthing knife-switch auxiliary switch JZ respectively on the spot.
The limiting plate 109 to extend internally, limiting plate 109 and earthing switch are equipped with the vertical edge of earthing switch baffle 104
Baffle 104 is perpendicular, and limiting plate 109 is equipped with the U-shaped limiting slot 110 of opening upwards, when earthing switch baffle 104 blocks earthing knife-switch
During handle hole 102, the spacing rotation in U-shaped limiting slot 110 of cam 111 electrically on swivel axis 103, may further ensure that
During remote control, electrically swivel axis 103 is rotated and will not deviated, and job stability is more preferably.
As shown in fig. 6, switchgear 101 is equipped with secondary locking component, secondary locking component includes rotation seat 112, rotates
Pin 113 and locking bar 114, rotation seat 112 is arranged on the outer wall of switchgear 101, and is located at 102 side of earthing knife-switch handle hole, is locked
One end of bar 114 is hinged by rotational pin 113 and rotation seat 112, and the other end of locking bar 114 is equipped with lock hole 115, works as ground connection
Switch baffle 104 is when blocking earthing knife-switch handle hole 102, locking bar 114 rotate make handle portion 105 through lock hole 115 and it is spacing
In lock hole 115, handle portion 105 is equipped with lockhole 116, can further lock at lockhole 116, improve security.
A kind of method of work of the electronic earthing knife-switch interlock of above-mentioned Medium Voltage Switchgear, comprises the following steps：
During electronic earthing knife-switch controller JC local operation earthing knife-switch, push earthing switch baffle 104 using handle portion 105 and expose
Earthing knife-switch handle hole 102, control after handle insertion earthing knife-switch handle hole 102 electrically swivel axis 103 rotate, and then operational grounding is opened
Close；
During electronic earthing knife-switch controller JC remote operation earthing knife-switch, handle is removed, earthing switch baffle is above carried using handle portion 105
104 make earthing switch baffle 104 block earthing knife-switch handle hole 102, and the contact 108 of bent-arm travel switch LX2 is kept off with earthing switch
Plate 104 moves and closes bent-arm travel switch LX2, and rear doors push-style travel switch LX1, circuit breaker cart testing position
Auxiliary switch S8, circuit breaker cart open position auxiliary switch DL and electrification display locking Node Switch K1 are closed at, this
When electronic earthing knife-switch controller JC interlocking signal end interlocking signal it is effective.Doors push-style after bent-arm travel switch LX2 coordinates
Travel switch LX1, circuit breaker cart testing position auxiliary switch S8, circuit breaker cart open position auxiliary switch DL and powered aobvious
Show that device locking Node Switch K1 achievees the purpose that live locking and rear gate interlock.
Claims (5)
- A kind of 1. electronic earthing knife-switch interlock of Medium Voltage Switchgear, arranged on switchgear（101）On, it is characterised in that including electrically Knife controller（JC）And interlock circuit, the electronic earthing knife-switch controller（JC）Interlocking signal end connection interlock circuit one end, The other end ground connection of the interlock circuit, interlock circuit include the rear doors push-style travel switch being in series（LX1）, bent-arm row Cheng Kaiguan（LX2）, circuit breaker cart testing position auxiliary switch（S8）, circuit breaker cart open position auxiliary switch（DL）And band Electric display locking Node Switch（K1）, switchgear（101）Earthing knife-switch handle hole（102）With electrically swivel axis（103）Between Equipped with the earthing switch baffle that can slide up and down（104）, the earthing switch baffle（104）Middle part be equipped with horizontally outward bending Handle portion（105）, the handle portion（105）Through earthing knife-switch handle hole（102）, earthing switch baffle（104）Bottom level Bending straight down again after inside bending, forms trigger unit（106）, the trigger unit（106）Perpendicular be equipped with card slot （107）, the bent-arm travel switch（LX2）Positioned at electrically swivel axis（103）Lower section, bent-arm travel switch（LX2） Contact（108）It is caught in card slot（107）It is interior, prepare electronic earthing knife-switch controller（JC）Before remote operation earthing knife-switch, handle portion is utilized （105）Above carry earthing switch baffle（104）Make earthing switch baffle（104）Block earthing knife-switch handle hole（102）, bent-arm stroke opens Close（LX2）Contact（108）With earthing switch baffle（104）Move and make bent-arm travel switch（LX2）Closure, and rear doors Push-style travel switch（LX1）, circuit breaker cart testing position auxiliary switch（S8）, circuit breaker cart open position auxiliary switch （DL）With electrification display locking Node Switch（K1）It is closed at.
- 2. the electronic earthing knife-switch interlock of a kind of Medium Voltage Switchgear according to claim 1, it is characterised in that the ground connection is opened Close baffle（104）Vertical edge at be equipped with the limiting plate that extends internally（109）, the limiting plate（109）With earthing switch baffle （104）It is perpendicular, limiting plate（109）It is equipped with the U-shaped limiting slot of opening upwards（110）, when earthing switch baffle（104）Block Earthing knife-switch handle hole（102）When, electrically swivel axis（103）On cam（111）It is spacing in U-shaped limiting slot（110）Interior rotation.
- A kind of 3. electronic earthing knife-switch interlock of Medium Voltage Switchgear according to claim 1, it is characterised in that the switchgear （101）Secondary locking component is equipped with, the secondary locking component includes rotation seat（112）, rotational pin（113）And locking bar （114）, the rotation seat（112）Arranged on switchgear（101）Outer wall on, and be located at earthing knife-switch handle hole（102）Side, the lock Determine bar（114）One end pass through rotational pin（113）With rotation seat（112）It is hinged, locking bar（114）The other end be equipped with lock hole （115）, when earthing switch baffle（104）Block earthing knife-switch handle hole（102）When, locking bar（114）Rotation makes handle portion（105）Wear Cross lock hole（115）It is and spacing in lock hole（115）It is interior.
- A kind of 4. electronic earthing knife-switch interlock of Medium Voltage Switchgear according to claim 3, it is characterised in that the handle portion （105）It is equipped with lockhole（116）.
- A kind of 5. electronic earthing knife-switch interlock of Medium Voltage Switchgear according to claim 1, it is characterised in that the bent-arm Travel switch（LX2）Pass through travel switch mounting plate（117）Arranged on electrically swivel axis（103）Lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721205443.XU CN207250368U (en) | 2017-09-20 | 2017-09-20 | A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721205443.XU CN207250368U (en) | 2017-09-20 | 2017-09-20 | A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear |
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| Publication Number | Publication Date |
|---|---|
| CN207250368U true CN207250368U (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721205443.XU Active CN207250368U (en) | 2017-09-20 | 2017-09-20 | A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564746A (en) * | 2017-09-20 | 2018-01-09 | 国家电网公司 | A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear and its method of work |
| CN109066439A (en) * | 2018-09-06 | 2018-12-21 | 华仪电气股份有限公司 | A kind of handcart interlocking mechanism of five-prevention interlocking device |
-
2017
- 2017-09-20 CN CN201721205443.XU patent/CN207250368U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564746A (en) * | 2017-09-20 | 2018-01-09 | 国家电网公司 | A kind of electronic earthing knife-switch interlock of Medium Voltage Switchgear and its method of work |
| CN107564746B (en) * | 2017-09-20 | 2020-03-17 | 国家电网公司 | Electric ground knife interlocking device of medium-voltage switch cabinet and working method thereof |
| CN109066439A (en) * | 2018-09-06 | 2018-12-21 | 华仪电气股份有限公司 | A kind of handcart interlocking mechanism of five-prevention interlocking device |
| CN109066439B (en) * | 2018-09-06 | 2023-11-21 | 华仪电气股份有限公司 | Handcart interlocking mechanism of five-prevention interlocking device |
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